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0 | 2306.07824 | Rongjun Ge | Rongjun Ge, Yuting He, Cong Xia, Yang Chen, Daoqiang Zhang, Ge Wang | JCCS-PFGM: A Novel Circle-Supervision based Poisson Flow Generative
Model for Multiphase CECT Progressive Low-Dose Reconstruction with Joint
Condition | null | null | null | null | eess.IV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Multiphase contrast-enhanced computed tomography (CECT) scan is clinically
significant to demonstrate the anatomy at different phases. In practice, such a
multiphase CECT scan inherently takes longer time and deposits much more
radiation dose into a patient body than a regular CT scan, and reduction of the
radiation dose typically compromise the CECT image quality and its diagnostic
value. With Joint Condition and Circle-Supervision, here we propose a novel
Poisson Flow Generative Model (JCCS-PFGM) to promote the progressive low-dose
reconstruction for multiphase CECT. JCCS-PFGM is characterized by the following
three aspects: a progressive low-dose reconstruction scheme, a
circle-supervision strategy, and a joint condition mechanism. Our extensive
experiments are performed on a clinical dataset consisting of 11436 images. The
results show that our JCCS-PFGM achieves promising PSNR up to 46.3dB, SSIM up
to 98.5%, and MAE down to 9.67 HU averagely on phases I, II and III, in
quantitative evaluations, as well as gains high-quality readable visualizations
in qualitative assessments. All of these findings reveal our method a great
potential to be adapted for clinical CECT scans at a much-reduced radiation
dose.
| [{'version': 'v1', 'created': 'Tue, 13 Jun 2023 14:56:48 GMT'}] | 2023-06-14 | [array(['Ge', 'Rongjun', ''], dtype=object)
array(['He', 'Yuting', ''], dtype=object)
array(['Xia', 'Cong', ''], dtype=object)
array(['Chen', 'Yang', ''], dtype=object)
array(['Zhang', 'Daoqiang', ''], dtype=object)
array(['Wang', 'Ge', ''], dtype=object)] |
1 | 1012.0335 | Vittorio Perduca | Sudeepa Roy, Vittorio Perduca and Val Tannen | Faster Query Answering in Probabilistic Databases using Read-Once
Functions | Accepted in ICDT 2011 | null | null | null | cs.DB | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A boolean expression is in read-once form if each of its variables appears
exactly once. When the variables denote independent events in a probability
space, the probability of the event denoted by the whole expression in
read-once form can be computed in polynomial time (whereas the general problem
for arbitrary expressions is #P-complete). Known approaches to checking
read-once property seem to require putting these expressions in disjunctive
normal form. In this paper, we tell a better story for a large subclass of
boolean event expressions: those that are generated by conjunctive queries
without self-joins and on tuple-independent probabilistic databases. We first
show that given a tuple-independent representation and the provenance graph of
an SPJ query plan without self-joins, we can, without using the DNF of a result
event expression, efficiently compute its co-occurrence graph. From this, the
read-once form can already, if it exists, be computed efficiently using
existing techniques. Our second and key contribution is a complete, efficient,
and simple to implement algorithm for computing the read-once forms (whenever
they exist) directly, using a new concept, that of co-table graph, which can be
significantly smaller than the co-occurrence graph.
| [{'version': 'v1', 'created': 'Wed, 1 Dec 2010 22:05:14 GMT'}
{'version': 'v2', 'created': 'Sat, 4 Dec 2010 19:39:58 GMT'}] | 2015-03-17 | [array(['Roy', 'Sudeepa', ''], dtype=object)
array(['Perduca', 'Vittorio', ''], dtype=object)
array(['Tannen', 'Val', ''], dtype=object)] |
2 | 2209.12890 | Eley Ng | Eley Ng, Ziang Liu, Monroe Kennedy III | It Takes Two: Learning to Plan for Human-Robot Cooperative Carrying | IEEE International Conference on Robotics and Automation (ICRA) 2023.
Supplementary materials at https://sites.google.com/view/cooperative-carrying | null | null | null | cs.RO cs.AI | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Cooperative table-carrying is a complex task due to the continuous nature of
the action and state-spaces, multimodality of strategies, and the need for
instantaneous adaptation to other agents. In this work, we present a method for
predicting realistic motion plans for cooperative human-robot teams on the
task. Using a Variational Recurrent Neural Network (VRNN) to model the
variation in the trajectory of a human-robot team across time, we are able to
capture the distribution over the team's future states while leveraging
information from interaction history. The key to our approach is leveraging
human demonstration data to generate trajectories that synergize well with
humans during test time in a receding horizon fashion. Comparison between a
baseline, sampling-based planner RRT (Rapidly-exploring Random Trees) and the
VRNN planner in centralized planning shows that the VRNN generates motion more
similar to the distribution of human-human demonstrations than the RRT. Results
in a human-in-the-loop user study show that the VRNN planner outperforms
decentralized RRT on task-related metrics, and is significantly more likely to
be perceived as human than the RRT planner. Finally, we demonstrate the VRNN
planner on a real robot paired with a human teleoperating another robot.
| [{'version': 'v1', 'created': 'Mon, 26 Sep 2022 17:59:23 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Mar 2023 06:44:46 GMT'}] | 2023-03-08 | [array(['Ng', 'Eley', ''], dtype=object)
array(['Liu', 'Ziang', ''], dtype=object)
array(['Kennedy', 'Monroe', 'III'], dtype=object)] |
3 | 1912.00308 | Yiyi Zhang | Yiyi Zhang, Li Niu, Ziqi Pan, Meichao Luo, Jianfu Zhang, Dawei Cheng,
Liqing Zhang | Exploiting Motion Information from Unlabeled Videos for Static Image
Action Recognition | null | AAAI 2020 | null | null | cs.CV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Static image action recognition, which aims to recognize action based on a
single image, usually relies on expensive human labeling effort such as
adequate labeled action images and large-scale labeled image dataset. In
contrast, abundant unlabeled videos can be economically obtained. Therefore,
several works have explored using unlabeled videos to facilitate image action
recognition, which can be categorized into the following two groups: (a)
enhance visual representations of action images with a designed proxy task on
unlabeled videos, which falls into the scope of self-supervised learning; (b)
generate auxiliary representations for action images with the generator learned
from unlabeled videos. In this paper, we integrate the above two strategies in
a unified framework, which consists of Visual Representation Enhancement (VRE)
module and Motion Representation Augmentation (MRA) module. Specifically, the
VRE module includes a proxy task which imposes pseudo motion label constraint
and temporal coherence constraint on unlabeled videos, while the MRA module
could predict the motion information of a static action image by exploiting
unlabeled videos. We demonstrate the superiority of our framework based on four
benchmark human action datasets with limited labeled data.
| [{'version': 'v1', 'created': 'Sun, 1 Dec 2019 03:01:10 GMT'}] | 2019-12-03 | [array(['Zhang', 'Yiyi', ''], dtype=object)
array(['Niu', 'Li', ''], dtype=object)
array(['Pan', 'Ziqi', ''], dtype=object)
array(['Luo', 'Meichao', ''], dtype=object)
array(['Zhang', 'Jianfu', ''], dtype=object)
array(['Cheng', 'Dawei', ''], dtype=object)
array(['Zhang', 'Liqing', ''], dtype=object)] |
4 | 2210.17156 | Sergio G\'omez | Alex Arenas, Antonio Garijo, Sergio G\'omez, Jordi Villadelprat | Bifurcation analysis of the Microscopic Markov Chain Approach to
contact-based epidemic spreading in networks | 15 pages, 3 figures | Chaos, Solitons & Fractals 166 (2023) 112921 | 10.1016/j.chaos.2022.112921 | null | physics.soc-ph cond-mat.stat-mech cs.SI math.DS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dynamics of many epidemic compartmental models for infectious diseases
that spread in a single host population present a second-order phase
transition. This transition occurs as a function of the infectivity parameter,
from the absence of infected individuals to an endemic state. Here, we study
this transition, from the perspective of dynamical systems, for a discrete-time
compartmental epidemic model known as Microscopic Markov Chain Approach, whose
applicability for forecasting future scenarios of epidemic spreading has been
proved very useful during the COVID-19 pandemic. We show that there is an
endemic state which is stable and a global attractor and that its existence is
a consequence of a transcritical bifurcation. This mathematical analysis
grounds the results of the model in practical applications.
| [{'version': 'v1', 'created': 'Mon, 31 Oct 2022 09:09:03 GMT'}] | 2023-01-02 | [array(['Arenas', 'Alex', ''], dtype=object)
array(['Garijo', 'Antonio', ''], dtype=object)
array(['Gómez', 'Sergio', ''], dtype=object)
array(['Villadelprat', 'Jordi', ''], dtype=object)] |
5 | math/0405438 | Joseph Gubeladze | Winfried Bruns and Joseph Gubeladze | Polytopes and K-theory | final version, to appear in Georg. Math. J | null | null | null | math.KT math.AG | null | This is an overview of results from our experiment of merging two seemingly
unrelated disciplines - higher algebraic K-theory of rings and the theory of
lattice polytopes. The usual K-theory is the ``theory of a unit simplex''. A
conjecture is proposed on the structure of higher polyhedral K-groups for
certain class of polytopes for which the coincidence of Quillen's and Volodin's
theories is known.
| [{'version': 'v1', 'created': 'Mon, 24 May 2004 00:30:52 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Jun 2004 07:41:12 GMT'}] | 2007-05-23 | [array(['Bruns', 'Winfried', ''], dtype=object)
array(['Gubeladze', 'Joseph', ''], dtype=object)] |
6 | 2204.12906 | Zhiyong Zhang | James Connor Meyers, Thomas Sayre McCord, Zhiyong Zhang, Hanumant
Singh | Towards A COLREGs Compliant Autonomous Surface Vessel in a Constrained
Channel | null | null | null | null | cs.RO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper, we look at the role of autonomous navigation in the maritime
domain. Specifically, we examine how an Autonomous Surface Vessel(ASV) can
achieve obstacle avoidance based on the Convention on the International
Regulations for Preventing Collisions at Sea (1972), or COLREGs, in real-world
environments. Our ASV is equipped with a broadband marine radar, an Inertial
Navigation System (INS), and uses official Electronic Navigational Charts
(ENC). These sensors are used to provide situational awareness and, in series
of well-defined steps, we can exclude land objects from the radar data, extract
tracks associated with moving vessels within range of the radar, and then use a
Kalman Filter to track and predict the motion of other moving vessels in the
vicinity. A Constant Velocity model for the Kalman Filter allows us to solve
the data association to build a consistent model between successive radar
scans. We account for multiple COLREGs situations based on the predicted
relative motion. Finally, an efficient path planning algorithm is presented to
find a path and publish waypoints to perform real-time COLREGs compliant
autonomous navigation within highly constrained environments. We demonstrate
the results of our framework with operational results collected over the course
of a 3.4 nautical mile mission on the Charles River in Boston in which the ASV
encountered and successfully navigated multiple scenarios and encounters with
other moving vessels at close quarters.
| [{'version': 'v1', 'created': 'Wed, 27 Apr 2022 13:17:59 GMT'}] | 2022-04-28 | [array(['Meyers', 'James Connor', ''], dtype=object)
array(['McCord', 'Thomas Sayre', ''], dtype=object)
array(['Zhang', 'Zhiyong', ''], dtype=object)
array(['Singh', 'Hanumant', ''], dtype=object)] |
7 | 1505.00625 | Andrea Addazi AndAdd | Andrea Addazi | Dynamical R-parity violations from exotic instantons | Version accepted by Electronic Journal of Theoretical Physics | null | null | null | hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show how R-parity can be dynamically broken by non-perturbative quantum
gravity effects. In particular, in D-brane models, Exotic instantons provide a
simple and calculable mechanism for the generation of R-parity violating
bilinear, trilinear and higher order superpotential terms. We show examples of
MSSM-like D-brane models, in which one Exotic Instanton induces only one term
among the possible R-parity violating superpotentials. Naturally, the idea can
be generalized for other gauge groups.
As a consequence, a dynamical violation of R-parity does not necessarily
destabilize the proton, i.e. a strong fine tuning is naturally avoided, in our
case. For example, a Lepton violating superpotential term can be generated
without generating Baryon violating terms, and viceversa. This has strong
implications in phenomenology: neutrino, neutron-antineutron, electric dipole
moments, dark matter and LHC physics.
| [{'version': 'v1', 'created': 'Mon, 4 May 2015 13:29:30 GMT'}
{'version': 'v2', 'created': 'Mon, 18 May 2015 14:44:06 GMT'}
{'version': 'v3', 'created': 'Sun, 31 May 2015 09:34:13 GMT'}
{'version': 'v4', 'created': 'Mon, 31 Aug 2015 13:13:09 GMT'}
{'version': 'v5', 'created': 'Tue, 15 Dec 2015 09:29:36 GMT'}
{'version': 'v6', 'created': 'Wed, 6 Apr 2016 14:30:17 GMT'}] | 2016-04-07 | [array(['Addazi', 'Andrea', ''], dtype=object)] |
8 | 1607.05764 | The CMS Collaboration | CMS Collaboration | Search for dark matter in proton-proton collisions at 8 TeV with missing
transverse momentum and vector boson tagged jets | Replaced with the published version. Added the journal reference and
DOI. All the figures and tables can be found at
http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-12-055/index.html | JHEP 12 (2016) 083, Erratum: JHEP 08 (2017) 035 | 10.1007/JHEP12(2016)083 | CMS-EXO-12-055, CERN-EP-2016-178 | hep-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A search is presented for an excess of events with large missing transverse
momentum in association with at least one highly energetic jet, in a data
sample of proton-proton collisions at a centre-of-mass energy of 8 TeV. The
data correspond to an integrated luminosity of 19.7 inverse femtobarns
collected by the CMS experiment at the LHC. The results are interpreted using a
set of simplified models for the production of dark matter via a scalar,
pseudoscalar, vector, or axial vector mediator. Additional sensitivity is
achieved by tagging events consistent with the jets originating from a
hadronically decaying vector boson. This search uses jet substructure
techniques to identify hadronically decaying vector bosons in both
Lorentz-boosted and resolved scenarios. This analysis yields improvements of
80% in terms of excluded signal cross sections with respect to the previous CMS
analysis using the same data set. No significant excess with respect to the
standard model expectation is observed and limits are placed on the parameter
space of the simplified models. Mediator masses between 80 and 400 GeV in the
scalar and pseudoscalar models, and up to 1.5 TeV in the vector and axial
vector models, are excluded.
| [{'version': 'v1', 'created': 'Tue, 19 Jul 2016 21:21:03 GMT'}
{'version': 'v2', 'created': 'Thu, 5 Jan 2017 18:11:56 GMT'}] | 2017-08-16 | [array(['CMS Collaboration', '', ''], dtype=object)] |
9 | 1904.13302 | Minjeong Kim | Minjeong Kim, Yujin Kwon, and Yongdae Kim | Is Stellar As Secure As You Think? | null | null | null | null | cs.DC cs.CY | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stellar is one of the top ten cryptocurrencies in terms of market
capitalization. It adopts a variant of Byzantine fault tolerance (BFT), named
federated Byzantine agreement (FBA), which generalizes the traditional BFT
algorithm to make it more suitable for open-membership blockchains. To this
end, FBA introduces a quorum slice concept, which consists of a set of nodes.
In FBA, a node can complete one consensus round when it receives specific
messages from nodes in a quorum slice appointed by the node. In this study, we
analyze FBA, whose security is highly dependent on the structure of quorum
slices, and demonstrate that it is not superior to the traditional BFT
algorithm in terms of safety and liveness. Then, to analyze the security of the
Stellar consensus protocol (SCP), which is a construction for FBA, we
investigate the current quorum slices in Stellar. We analyze the structure of
quorum slices and measure the influence of each node quantitatively using two
metrics, PageRank (PR) and the newly proposed NodeRank (NR). The results show
that the Stellar system is significantly centralized. Thereafter, to determine
how the centralized structure can have a negative impact on the Stellar system,
we study the cascading failure caused by deleting only a few nodes (i.e.,
validators) in Stellar. We show that all of the nodes in Stellar cannot run SCP
if only two nodes fail. To make matters worse, these two nodes are run and
controlled by a single organization, the Stellar foundation.
| [{'version': 'v1', 'created': 'Mon, 29 Apr 2019 06:29:34 GMT'}] | 2019-05-01 | [array(['Kim', 'Minjeong', ''], dtype=object)
array(['Kwon', 'Yujin', ''], dtype=object)
array(['Kim', 'Yongdae', ''], dtype=object)] |
10 | 1608.05685 | Marco Buongiorno Nardelli | Pino D'Amico, Luis A. Agapito, Alessandra Catellani, Alice Ruini,
Stefano Curtarolo, Marco Fornari, Marco Buongiorno Nardelli, and Arrigo
Calzolari | Accurate $ab~initio$ tight-binding Hamiltonians: effective tools for
electronic transport and optical spectroscopy from first principles | null | Phys. Rev. B 94, 165166 (2016) | 10.1103/PhysRevB.94.165166 | null | cond-mat.mtrl-sci | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The calculations of electronic transport coefficients and optical properties
require a very dense interpolation of the electronic band structure in
reciprocal space that is computationally expensive and may have issues with
band crossing and degeneracies. Capitalizing on a recently developed
pseudo-atomic orbital projection technique, we exploit the exact tight-binding
representation of the first principles electronic structure for the purposes of
(1) providing an efficient strategy to explore the full band structure
$E_n({\bf k})$, (2) computing the momentum operator differentiating directly
the Hamiltonian, and (3) calculating the imaginary part of the dielectric
function. This enables us to determine the Boltzmann transport coefficients and
the optical properties within the independent particle approximation. In
addition, the local nature of the tight-binding representation facilitates the
calculation of the ballistic transport within the Landauer theory for systems
with hundreds of atoms. In order to validate our approach we study the
multi-valley band structure of CoSb$_3$ and a large core-shell nanowire using
the ACBN0 functional. In CoSb$_3$ we point the many band minima contributing to
the electronic transport that enhance the thermoelectric properties; for the
core-shell nanowire we identify possible mechanisms for photo-current
generation and justify the presence of protected transport channels in the
wire.
| [{'version': 'v1', 'created': 'Fri, 19 Aug 2016 18:09:43 GMT'}] | 2016-11-02 | [array(["D'Amico", 'Pino', ''], dtype=object)
array(['Agapito', 'Luis A.', ''], dtype=object)
array(['Catellani', 'Alessandra', ''], dtype=object)
array(['Ruini', 'Alice', ''], dtype=object)
array(['Curtarolo', 'Stefano', ''], dtype=object)
array(['Fornari', 'Marco', ''], dtype=object)
array(['Nardelli', 'Marco Buongiorno', ''], dtype=object)
array(['Calzolari', 'Arrigo', ''], dtype=object)] |
11 | 1408.2137 | Andrea Medini | Andrea Medini | Countable dense homogeneity in powers of zero-dimensional definable
spaces | 14 pages | null | null | null | math.GN math.LO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that, for a coanalytic subspace $X$ of $2^\omega$, the countable
dense homogeneity of $X^\omega$ is equivalent to $X$ being Polish. This
strengthens a result of Hru\v{s}\'ak and Zamora Avil\'es. Then, inspired by
results of Hern\'andez-Guti\'errez, Hru\v{s}\'ak and van Mill, using a
technique of Medvedev, we construct a non-Polish subspace $X$ of $2^\omega$
such that $X^\omega$ is countable dense homogeneous. This gives the first
$\mathsf{ZFC}$ answer to a question of Hru\v{s}\'ak and Zamora Avil\'es.
Furthermore, since our example is consistently analytic, the equivalence result
mentioned above is sharp. Our results also answer a question of Medini and
Milovich. Finally, we show that if every countable subset of a zero-dimensional
separable metrizable space $X$ is included in a Polish subspace of $X$ then
$X^\omega$ is countable dense homogeneous.
| [{'version': 'v1', 'created': 'Sat, 9 Aug 2014 17:04:52 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Apr 2015 12:49:15 GMT'}] | 2015-04-28 | [array(['Medini', 'Andrea', ''], dtype=object)] |
12 | 2005.01646 | Kartik Goyal | Kartik Goyal, Chris Dyer, Christopher Warren, Max G'Sell, Taylor
Berg-Kirkpatrick | A Probabilistic Generative Model for Typographical Analysis of Early
Modern Printing | To appear at ACL 2020 | null | null | null | cs.LG cs.CL | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a deep and interpretable probabilistic generative model to analyze
glyph shapes in printed Early Modern documents. We focus on clustering
extracted glyph images into underlying templates in the presence of multiple
confounding sources of variance. Our approach introduces a neural editor model
that first generates well-understood printing phenomena like spatial
perturbations from template parameters via interpertable latent variables, and
then modifies the result by generating a non-interpretable latent vector
responsible for inking variations, jitter, noise from the archiving process,
and other unforeseen phenomena associated with Early Modern printing.
Critically, by introducing an inference network whose input is restricted to
the visual residual between the observation and the interpretably-modified
template, we are able to control and isolate what the vector-valued latent
variable captures. We show that our approach outperforms rigid interpretable
clustering baselines (Ocular) and overly-flexible deep generative models (VAE)
alike on the task of completely unsupervised discovery of typefaces in
mixed-font documents.
| [{'version': 'v1', 'created': 'Mon, 4 May 2020 17:01:11 GMT'}] | 2020-05-05 | [array(['Goyal', 'Kartik', ''], dtype=object)
array(['Dyer', 'Chris', ''], dtype=object)
array(['Warren', 'Christopher', ''], dtype=object)
array(["G'Sell", 'Max', ''], dtype=object)
array(['Berg-Kirkpatrick', 'Taylor', ''], dtype=object)] |
13 | 2304.07685 | Serdar Y\"uksel | Serdar Y\"uksel | On Borkar and Young Relaxed Control Topologies and Continuous Dependence
of Invariant Measures on Control Policy | null | null | null | null | math.OC | http://creativecommons.org/licenses/by-nc-nd/4.0/ | In deterministic and stochastic control theory, relaxed or randomized control
policies allow for versatile mathematical analysis (on continuity, compactness,
convexity and approximations) to be applicable with no artificial restrictions
on the classes of control policies considered, leading to very general
existence results on optimal measurable policies under various setups and
information structures. On relaxed controls, two studied topologies are the
Young and Borkar (weak$^*$) topologies on spaces of functions from a
state/measurement space to the space of probability measures on control action
spaces; the former via a weak convergence topology on probability measures on a
product space with a fixed marginal on the input (state) space, and the latter
via a weak$^*$ topology on randomized policies viewed as maps from
states/measurements to the space of signed measures with bounded variation. We
establish implication and equivalence conditions between the Young and Borkar
topologies on control policies. We then show that, under some conditions, for a
controlled Markov chain with standard Borel spaces the invariant measure is
weakly continuous on the space of stationary control policies defined by either
of these topologies. An implication is near optimality of quantized stationary
policies in state and actions or continuous stationary and deterministic
policies for average cost control under two sets of continuity conditions (with
either weak continuity in the state-action pair or strong continuity in the
action for each state) on transition kernels.
| [{'version': 'v1', 'created': 'Sun, 16 Apr 2023 03:38:21 GMT'}] | 2023-04-18 | [array(['Yüksel', 'Serdar', ''], dtype=object)] |
14 | 2110.13979 | Samuel Christensen | Samuel Christensen, Raymond Chu, Christopher R Anderson, and Marcus
Roper | Fast Asymptotic-Numerical Method For Coarse Mesh Particle Simulation In
Channels Of Arbitrary Cross Section | null | null | 10.1016/j.jcp.2022.111622 | null | physics.flu-dyn | http://creativecommons.org/licenses/by/4.0/ | Particles traveling through inertial microfluidic devices migrate to focusing
streamlines. We present a numerical method that calculates migration velocities
of particles in inertial microfluidic channels of arbitrary cross section by
representing particles by singularities. Refinements to asymptotic analysis are
given that improve the regularity of the singularity approximation, making
finite element approximations of flow and pressure fields more effective.
Sample results demonstrate that the method is computationally efficient and
able to capture bifurcations in particle focusing positions due to changes in
channel shape and Reynolds number.
| [{'version': 'v1', 'created': 'Tue, 26 Oct 2021 19:32:15 GMT'}] | 2022-10-19 | [array(['Christensen', 'Samuel', ''], dtype=object)
array(['Chu', 'Raymond', ''], dtype=object)
array(['Anderson', 'Christopher R', ''], dtype=object)
array(['Roper', 'Marcus', ''], dtype=object)] |
15 | 1808.08677 | Yibo Yang | Yi-Bo Yang, Jian Liang, Yu-Jiang Bi, Ying Chen, Terrence Draper,
Keh-Fei Liu and Zhaofeng Liu | Proton Mass Decomposition from the QCD Energy Momentum Tensor | 10 pages, 6 figures | Phys. Rev. Lett. 121, 212001 (2018) | 10.1103/PhysRevLett.121.212001 | null | hep-lat hep-ph nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report results on the proton mass decomposition and also on related quark
and glue momentum fractions. The results are based on overlap valence fermions
on four ensembles of $N_f = 2+1$ DWF configurations with three lattice spacings
and three volumes, and several pion masses including the physical pion mass.
With fully non-perturbative renormalization (and universal normalization on
both quark and gluon), we find that the quark energy and glue field energy
contribute 33(4)(4)\% and 37(5)(4)\% respectively in the $\overline{MS}$ scheme
at $\mu = 2$ GeV. A quarter of the trace anomaly gives a 23(1)(1)\%
contribution to the proton mass based on the sum rule, given 9(2)(1)\%
contribution from the $u, d,$ and $s$ quark scalar condensates. The $u,d,s$ and
glue momentum fractions in the $\overline{MS}$ scheme are in good agreement
with global analyses at $\mu = 2$ GeV.
| [{'version': 'v1', 'created': 'Mon, 27 Aug 2018 03:20:41 GMT'}
{'version': 'v2', 'created': 'Thu, 6 Sep 2018 11:20:40 GMT'}] | 2018-11-28 | [array(['Yang', 'Yi-Bo', ''], dtype=object)
array(['Liang', 'Jian', ''], dtype=object)
array(['Bi', 'Yu-Jiang', ''], dtype=object)
array(['Chen', 'Ying', ''], dtype=object)
array(['Draper', 'Terrence', ''], dtype=object)
array(['Liu', 'Keh-Fei', ''], dtype=object)
array(['Liu', 'Zhaofeng', ''], dtype=object)] |
16 | 0911.1649 | Stefan Waldmann | Simone Gutt, Stefan Waldmann | Involutions and Representations for Reduced Quantum Algebras | LaTeX 2e, 52 pages, no figures | null | null | null | math.QA math.SG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the context of deformation quantization, there exist various procedures to
deal with the quantization of a reduced space M_red. We shall be concerned here
mainly with the classical Marsden-Weinstein reduction, assuming that we have a
proper action of a Lie group G on a Poisson manifold M, with a moment map J for
which zero is a regular value. For the quantization, we follow [BHW] (with a
simplified approach) and build a star product *_red on M_red from a strongly
invariant star product * on M. The new questions which are addressed in this
paper concern the existence of natural *-involutions on the reduced quantum
algebra and the representation theory for such a reduced *-algebra. We assume
that * is Hermitian and we show that the choice of a formal series of smooth
densities on the embedded coisotropic submanifold C = J^{-1}(0), with some
equivariance property, defines a *-involution for *_red on the reduced space.
Looking into the question whether the corresponding *-involution is the complex
conjugation (which is a *-involution in the Marsden-Weinstein context) yields a
new notion of quantized unimodular class. We introduce a left *-submodule and a
right *_red-submodule C^\infty_cf(C)[[lambda]] of C^\infty(C)[[lambda]]; we
define on it a C^\infty(M_red)[[lambda]]-valued inner product and we establish
that this gives a strong Morita equivalence bimodule between
C^\infty(M_red)[[lambda]] and the finite rank operators on
C^\inftycf(C)[[lambda]]. The crucial point is here to show the complete
positivity of the inner product. We obtain a Rieffel induction functor from the
strongly non-degenerate *-representations of (C^\infty(M_red)[[lambda]], *_red)
on pre-Hilbert right D-modules to those of (C^\infty(M)[[lambda]], *), for any
auxiliary coefficient *-algebra D over \mathbb{C}[[lambda]].
| [{'version': 'v1', 'created': 'Mon, 9 Nov 2009 12:09:21 GMT'}] | 2009-11-10 | [array(['Gutt', 'Simone', ''], dtype=object)
array(['Waldmann', 'Stefan', ''], dtype=object)] |
17 | 2303.10686 | Tommy Nilsson | Leonie Becker, Tommy Nilsson, Paul Topf Aguiar de Medeiros, Flavie
Rometsch | Augmented Reality in Service of Human Operations on the Moon: Insights
from a Virtual Testbed | Extended Abstracts of the 2023 CHI Conference on Human Factors in
Computing Systems (CHI'23) | null | null | null | cs.HC cs.CY | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Future astronauts living and working on the Moon will face extreme
environmental conditions impeding their operational safety and performance.
While it has been suggested that Augmented Reality (AR) Head-Up Displays (HUDs)
could potentially help mitigate some of these adversities, the applicability of
AR in the unique lunar context remains underexplored. To address this
limitation, we have produced an accurate representation of the lunar setting in
virtual reality (VR) which then formed our testbed for the exploration of
prospective operational scenarios with aerospace experts. Herein we present
findings based on qualitative reflections made by the first 6 study
participants. AR was found instrumental in several use cases, including the
support of navigation and risk awareness. Major design challenges were likewise
identified, including the importance of redundancy and contextual
appropriateness. Drawing on these findings, we conclude by outlining directions
for future research aimed at developing AR-based assistive solutions tailored
to the lunar setting.
| [{'version': 'v1', 'created': 'Sun, 19 Mar 2023 15:32:14 GMT'}] | 2023-03-21 | [array(['Becker', 'Leonie', ''], dtype=object)
array(['Nilsson', 'Tommy', ''], dtype=object)
array(['de Medeiros', 'Paul Topf Aguiar', ''], dtype=object)
array(['Rometsch', 'Flavie', ''], dtype=object)] |
18 | 2202.01316 | Massimiliano Esposito | Artur Wachtel, Riccardo Rao, Massimiliano Esposito | Free-Energy Transduction in Chemical Reaction Networks: from Enzymes to
Metabolism | 17 pages, 17 figues, (v2: IV.A.3 & IV.C modified, VI expanded) | null | 10.1063/5.0091035 | null | q-bio.MN cond-mat.stat-mech physics.chem-ph | http://creativecommons.org/licenses/by/4.0/ | We provide a rigorous definition of free-energy transduction and its
efficiency in arbitrary -- linear or nonlinear -- open chemical reaction
networks (CRNs) operating at steady state. Our method is based on the knowledge
of the stoichiometric matrix and of the chemostatted species (i.e. the species
maintained at constant concentration by the environment) to identify the
fundamental currents and forces contributing to the entropy production.
Transduction occurs when the current of a stoichiometrically balanced process
is driven against its spontaneous direction (set by its force) thanks to other
processes flowing along their spontaneous direction. In these regimes, open
CRNs operate as thermodynamic machines. After exemplifying these general ideas
using toy models, we analyze central energy metabolism. We relate the
fundamental currents to metabolic pathways and discuss the efficiency with
which they are able to transduce free energy.
| [{'version': 'v1', 'created': 'Wed, 2 Feb 2022 22:41:30 GMT'}
{'version': 'v2', 'created': 'Mon, 13 Jun 2022 21:16:55 GMT'}] | 2022-06-15 | [array(['Wachtel', 'Artur', ''], dtype=object)
array(['Rao', 'Riccardo', ''], dtype=object)
array(['Esposito', 'Massimiliano', ''], dtype=object)] |
19 | 0809.0823 | Jun Takahashi | J. Takahashi and R. Derradi de Souza | Strangeness production in STAR | proceedings to 24th Winter Workshop on Nuclear Dynamics, South Padre
Island, Texas, April 2008 | null | null | null | nucl-ex | http://creativecommons.org/licenses/publicdomain/ | We present a summary of strangeness enhancement results comparing data from
Cu+Cu and Au+Au collisions at sqrt(SNN) = 200GeV measured by the STAR
experiment. Relative yields in central Cu+Cu data seem to be higher than the
equivalent sized peripheral Au+Au collision. In addition, strange particle
production from these two systems is compared in terms of a statistical model,
applying a Grand-Canonical ensemble and also applying a canonical correlation
volume for the strange particles. Thermal fit results from the Grand-Canonical
formalism shows little dependence on the system size but, when considering a
strange canonical ensemble, strangeness enhancement shows a strong dependency
on the correlation volume.
| [{'version': 'v1', 'created': 'Thu, 4 Sep 2008 14:23:02 GMT'}] | 2008-09-05 | [array(['Takahashi', 'J.', ''], dtype=object)
array(['de Souza', 'R. Derradi', ''], dtype=object)] |
20 | hep-ph/0501166 | Isabella Masina | I. Masina, C.A. Savoy | On Power and Complementarity of the Experimental Constraints on Seesaw
Models | 28 pages, 5 figures; v2: a comment a reference added, minor
improvements in the text | Phys.Rev. D71 (2005) 093003 | 10.1103/PhysRevD.71.093003 | ROMA1-TH/1397-04, SACLAY-T05/08 | hep-ph | null | We demonstrate the impact that present lepton flavour and CP violation data -
neutrino oscillations, baryon asymmetry of the universe, flavour violations in
charged lepton decays and lepton electric dipole moments - have on
supersymmetric seesaw theories by analysing the class of models based on a U(1)
flavour symmetry. The fermion U(1) charges are determined to a large extent by
the data, the flavour patterns being naturally defined through their choice.
The selected models generically predict mu -> e gamma within the reach of the
projected experiments, which could be sensitive enough to exclude the whole
class of them. By now, the present sensitivity to mu -> e gamma already
provides stringent bounds on the contribution of the seesaw couplings to the
lepton electric dipole moments.
| [{'version': 'v1', 'created': 'Tue, 18 Jan 2005 15:45:20 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Feb 2005 14:59:13 GMT'}] | 2009-11-11 | [array(['Masina', 'I.', ''], dtype=object)
array(['Savoy', 'C. A.', ''], dtype=object)] |
21 | 2105.03370 | Bruno Valeixo Bento | Bruno Valeixo Bento, Dibya Chakraborty, Susha L. Parameswaran, Ivonne
Zavala | A New de Sitter Solution with a Weakly Warped Deformed Conifold | 36 pages, 7 figures and 4 tables; references added and minor typos
fixed | null | null | null | hep-th astro-ph.CO gr-qc hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We revisit moduli stabilisation for type IIB flux compactifications that
include a warped throat region corresponding to a warped deformed conifold,
with an anti-D3-brane sitting at its tip. The warping induces a coupling
between the conifold's deformation modulus and the bulk volume modulus in the
K\"ahler potential. Previous works have studied the scalar potential assuming a
strong warping such that this coupling term dominates, and found that the
anti-D3-brane uplift may destabilise the conifold modulus and/or volume
modulus, unless flux numbers within the throat are large, which makes tadpole
cancellation a challenge. We explore the regime of parameter space
corresponding to a weakly-but-still warped throat, such that the coupling
between the conifold and volume moduli is subdominant. We thus discover a new
metastable de Sitter solution within the four-dimensional effective field
theory. We discuss the position of this de Sitter vacuum in the string theory
landscape and swampland.
| [{'version': 'v1', 'created': 'Fri, 7 May 2021 16:33:49 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Jun 2021 16:47:59 GMT'}] | 2021-06-11 | [array(['Bento', 'Bruno Valeixo', ''], dtype=object)
array(['Chakraborty', 'Dibya', ''], dtype=object)
array(['Parameswaran', 'Susha L.', ''], dtype=object)
array(['Zavala', 'Ivonne', ''], dtype=object)] |
22 | 1902.03363 | Gabriel Borderes-Motta | O. C. Winter1 and G. Borderes-Motta1 and T. Ribeiro | On the location of the ring around the dwarf planet Haumea | null | Monthly Notices of the Royal Astronomical Society, Volume 484,
Issue 3, 11 April 2019, Pages 3765-3771 | 10.1093/mnras/stz246 | null | astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The recently discovered ring around the dwarf planet (136108) Haumea is
located near the 1:3 resonance between the orbital motion of the ring particles
and the spin of Haumea. In the current work is studied the dynamics of
individual particles in the region where is located the ring. Using the
Poincar\'e Surface of Section technique, the islands of stability associated
with the 1:3 resonance are identified and studied. Along all its existence this
resonance showed to be doubled, producing pairs of periodic and quasi-periodic
orbits. The fact of being doubled introduces a separatrix, which generates a
chaotic layer that significantly reduces the size of the stable regions of the
1:3 resonance. The results also show that there is a minimum equivalent
eccentricity ($e_{1:3}$) for the existence of such resonance. This value seems
to be too high to keep a particle within the borders of the ring. On the other
hand, the Poincar\'e Surface of Sections show the existence of much larger
stable regions, but associated with a family of first kind periodic orbits.
They exist with equivalent eccentricity values lower than $e_{1:3}$, and
covering a large radial distance, which encompasses the region of the Haumea's
ring. Therefore, this analysis suggests the Haumea's ring is in a stable region
associated with a first kind periodic orbit instead of the 1:3 resonance.
| [{'version': 'v1', 'created': 'Sat, 9 Feb 2019 02:55:34 GMT'}] | 2019-02-12 | [array(['Winter1', 'O. C.', ''], dtype=object)
array(['Borderes-Motta1', 'G.', ''], dtype=object)
array(['Ribeiro', 'T.', ''], dtype=object)] |
23 | 1112.4616 | Federico Holik | Federico Holik, C\'esar Massri, Leandro Zuberman and Angel Plastino | On the lattice structure of probability spaces in quantum mechanics | arXiv admin note: substantial text overlap with arXiv:1008.4168 | null | 10.1007/s10773-012-1277-5 | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let C be the set of all possible quantum states. We study the convex subsets
of C with attention focused on the lattice theoretical structure of these
convex subsets and, as a result, find a framework capable of unifying several
aspects of quantum mechanics, including entanglement and Jaynes' Max-Ent
principle. We also encounter links with entanglement witnesses, which leads to
a new separability criteria expressed in lattice language. We also provide an
extension of a separability criteria based on convex polytopes to the infinite
dimensional case and show that it reveals interesting facets concerning the
geometrical structure of the convex subsets. It is seen that the above
mentioned framework is also capable of generalization to any statistical theory
via the so-called convex operational models' approach. In particular, we show
how to extend the geometrical structure underlying entanglement to any
statistical model, an extension which may be useful for studying correlations
in different generalizations of quantum mechanics.
| [{'version': 'v1', 'created': 'Tue, 20 Dec 2011 09:23:26 GMT'}] | 2015-06-03 | [array(['Holik', 'Federico', ''], dtype=object)
array(['Massri', 'César', ''], dtype=object)
array(['Zuberman', 'Leandro', ''], dtype=object)
array(['Plastino', 'Angel', ''], dtype=object)] |
24 | 2111.06268 | Yaroslav Balytskyi | Yaroslav Balytskyi, Justin Bendesky, Tristan Paul, Guy Hagen, Kelly
McNear | Raman spectroscopy in open world learning settings using the
Objectosphere approach | null | null | null | null | cs.LG cs.AI physics.app-ph physics.bio-ph physics.comp-ph physics.med-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Raman spectroscopy in combination with machine learning has significant
promise for applications in clinical settings as a rapid, sensitive, and
label-free identification method. These approaches perform well in classifying
data that contains classes that occur during the training phase. However, in
practice, there are always substances whose spectra have not yet been taken or
are not yet known and when the input data are far from the training set and
include new classes that were not seen at the training stage, a significant
number of false positives are recorded which limits the clinical relevance of
these algorithms. Here we show that these obstacles can be overcome by
implementing recently introduced Entropic Open Set and Objectosphere loss
functions. To demonstrate the efficiency of this approach, we compiled a
database of Raman spectra of 40 chemical classes separating them into 20
biologically relevant classes comprised of amino acids, 10 irrelevant classes
comprised of bio-related chemicals, and 10 classes that the Neural Network has
not seen before, comprised of a variety of other chemicals. We show that this
approach enables the network to effectively identify the unknown classes while
preserving high accuracy on the known ones, dramatically reducing the number of
false positives while preserving high accuracy on the known classes, which will
allow this technique to bridge the gap between laboratory experiments and
clinical applications.
| [{'version': 'v1', 'created': 'Thu, 11 Nov 2021 15:20:47 GMT'}] | 2021-11-12 | [array(['Balytskyi', 'Yaroslav', ''], dtype=object)
array(['Bendesky', 'Justin', ''], dtype=object)
array(['Paul', 'Tristan', ''], dtype=object)
array(['Hagen', 'Guy', ''], dtype=object)
array(['McNear', 'Kelly', ''], dtype=object)] |
25 | 2302.13584 | Daichi Guo | Daichi Guo and Guanting Dong and Dayuan Fu and Yuxiang Wu and Chen
Zeng and Tingfeng Hui and Liwen Wang and Xuefeng Li and Zechen Wang and
Keqing He and Xinyue Cui and Weiran Xu | Revisit Out-Of-Vocabulary Problem for Slot Filling: A Unified
Contrastive Frameword with Multi-level Data Augmentations | 5 pages, 3 figures, published to ICASSP 2023 | null | null | null | cs.CL | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In real dialogue scenarios, the existing slot filling model, which tends to
memorize entity patterns, has a significantly reduced generalization facing
Out-of-Vocabulary (OOV) problems. To address this issue, we propose an OOV
robust slot filling model based on multi-level data augmentations to solve the
OOV problem from both word and slot perspectives. We present a unified
contrastive learning framework, which pull representations of the origin sample
and augmentation samples together, to make the model resistant to OOV problems.
We evaluate the performance of the model from some specific slots and carefully
design test data with OOV word perturbation to further demonstrate the
effectiveness of OOV words. Experiments on two datasets show that our approach
outperforms the previous sota methods in terms of both OOV slots and words.
| [{'version': 'v1', 'created': 'Mon, 27 Feb 2023 08:42:30 GMT'}] | 2023-02-28 | [array(['Guo', 'Daichi', ''], dtype=object)
array(['Dong', 'Guanting', ''], dtype=object)
array(['Fu', 'Dayuan', ''], dtype=object)
array(['Wu', 'Yuxiang', ''], dtype=object)
array(['Zeng', 'Chen', ''], dtype=object)
array(['Hui', 'Tingfeng', ''], dtype=object)
array(['Wang', 'Liwen', ''], dtype=object)
array(['Li', 'Xuefeng', ''], dtype=object)
array(['Wang', 'Zechen', ''], dtype=object)
array(['He', 'Keqing', ''], dtype=object)
array(['Cui', 'Xinyue', ''], dtype=object)
array(['Xu', 'Weiran', ''], dtype=object)] |
26 | 0804.4739 | Biman J. Medhi | Biman J. Medhi (ARIES, Nainital), Maheswar. G (ARIES, Nainital; KASI,
Korea), J. C. Pandey (ARIES, Nainital), T. S. Kumar (ARIES, Nainital) and Ram
Sagar (ARIES, Nainital) | Optical polarimetric study of open clusters: Distribution of
Interstellar matter towards NGC 654 | 24 pages, 10 figures, 4 tables, Accepted for publication in MNRAS | Mon.Not.Roy.Astron.Soc.388:105-116,2008 | 10.1111/j.1365-2966.2008.13405.x | null | astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present new B, V and R linear polarimetric observations for 61 stars
towards the region of the young open cluster NGC 654. In this study we found
evidence for the presence of at least two layers of dust along the line of
sight to the cluster. The distances to the two dust layers are estimated to be
~ 200 pc and ~ 1 kpc which are located much closer to the Sun than the cluster
(~ 2.4 kpc). Both the dust layers have their local magnetic field orientation
nearly parallel to the direction of the Galactic plane. The foreground dust
layer is found to have a ring morphology with the central hole coinciding with
the center of the cluster. The foreground dust grains are suggested to be
mainly responsible for both the observed differential reddening and the
polarization towards the cluster.
| [{'version': 'v1', 'created': 'Wed, 30 Apr 2008 05:54:03 GMT'}] | 2009-06-23 | [array(['Medhi', 'Biman J.', '', 'ARIES, Nainital'], dtype=object)
array(['G', 'Maheswar.', '', 'ARIES, Nainital; KASI,\n Korea'],
dtype=object)
array(['Pandey', 'J. C.', '', 'ARIES, Nainital'], dtype=object)
array(['Kumar', 'T. S.', '', 'ARIES, Nainital'], dtype=object)
array(['Sagar', 'Ram', '', 'ARIES, Nainital'], dtype=object)] |
27 | 2008.12861 | Cem Altunbas | Yeonok Park, Timur Alexeev, Brian Miller, Moyed Miften, Cem Altunbas | Evaluation of scatter rejection and correction performance of 2D
antiscatter grids in cone beam computed tomography | null | null | 10.1002/mp.14756 | null | physics.med-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Purpose: We have been investigating 2D antiscatter grids (2D ASG) to reduce
scatter fluence and improve image quality in cone beam computed tomography
(CBCT). In this work, two different aspects of 2D ASGs, their scatter rejection
and correction capability, were investigated in CBCT experiments. To correct
residual scatter transmitted through the 2D ASG, it was used as a scatter
measurement device with a novel method: grid-based scatter sampling. Methods:
Three focused 2D ASG prototypes with grid ratios of 8, 12, and 16 were
developed for linac-mounted CBCT geometry. In the first phase, 2D ASGs were
used as a scatter rejection device, and the effect of grid ratio on CT number
accuracy and contrast-to-noise ratio (CNR) evaluated in CBCT images. In the
second phase, the grid-based scatter sampling method was implemented. The
percent change in CT numbers was measured by changing the phantom size from
head to pelvis configuration.Results: When 2D ASG was used as a scatter
rejection device, CT number variation due to change in phantom dimensions was
reduced from 23% to 2 - 6%. A grid ratio of 16 yielded the lowest CT number
variation. All three 2D ASGs yielded improvement in CNR, up to a factor of two
in pelvis-sized phantoms. When 2D ASG prototypes were used for both scatter
rejection and correction, CT number variations were reduced further, to 1.3 -
2.6%. Conclusions: When 2D ASG was used solely as a scatter rejection device,
substantial improvement in CT number accuracy could be achieved by increasing
the grid ratio. 2D ASGs could also provide significant CNR improvement even at
lower grid ratios. When 2D ASG was used in conjunction with the grid-based
scatter sampling method, it provided further improvement in CT number accuracy,
irrespective of the grid ratio, while preserving 2D ASG's capacity to improve
CNR.
| [{'version': 'v1', 'created': 'Fri, 28 Aug 2020 22:00:51 GMT'}] | 2021-06-09 | [array(['Park', 'Yeonok', ''], dtype=object)
array(['Alexeev', 'Timur', ''], dtype=object)
array(['Miller', 'Brian', ''], dtype=object)
array(['Miften', 'Moyed', ''], dtype=object)
array(['Altunbas', 'Cem', ''], dtype=object)] |
28 | physics/0406053 | Hanno Hammer | Hanno Hammer and William R. B. Lionheart | Reconstruction of spatially inhomogeneous dielectric tensors via optical
tomography | Submitted. Section IV slightly extended | JOSA A, Volume 22, Issue 2, 250-255, Feb. 2005 | 10.1364/JOSAA.22.000250 | null | physics.optics cond-mat.mtrl-sci physics.ins-det quant-ph | null | A method to reconstruct weakly anisotropic inhomogeneous dielectric tensors
inside a transparent medium is proposed. The mathematical theory of Integral
Geometry is cast into a workable framework which allows the full determination
of dielectric tensor fields by scalar Radon inversions of the polarization
transformation data obtained from six planar tomographic scanning cycles.
Furthermore, a careful derivation of the usual equations of integrated
photoelasticity in terms of heuristic length scales of the material
inhomogeneity and anisotropy is provided, making the paper a self-contained
account about the reconstruction of arbitrary three-dimensional, weakly
anisotropic dielectric tensor fields.
| [{'version': 'v1', 'created': 'Fri, 11 Jun 2004 09:48:50 GMT'}
{'version': 'v2', 'created': 'Tue, 29 Jun 2004 22:19:07 GMT'}] | 2009-11-10 | [array(['Hammer', 'Hanno', ''], dtype=object)
array(['Lionheart', 'William R. B.', ''], dtype=object)] |
29 | 1712.02469 | Chunlin Wang | Chunlin Wang, Paul Marriott and Pengfei Li | Asymptotic coverage probabilities of bootstrap percentile confidence
intervals for constrained parameters | 22 pages, 6 figures | Metrika, 85, 809-831 (2022) | 10.1007/s00184-021-00851-0 | null | math.ST stat.CO stat.ME stat.TH | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The asymptotic behaviour of the commonly used bootstrap percentile confidence
interval is investigated when the parameters are subject to linear inequality
constraints. We concentrate on the important one- and two-sample problems with
data generated from general parametric distributions in the natural exponential
family. The focus of this paper is on quantifying the coverage probabilities of
the parametric bootstrap percentile confidence intervals, in particular their
limiting behaviour near boundaries. We propose a local asymptotic framework to
study this subtle coverage behaviour. Under this framework, we discover that
when the true parameters are on, or close to, the restriction boundary, the
asymptotic coverage probabilities can always exceed the nominal level in the
one-sample case; however, they can be, remarkably, both under and over the
nominal level in the two-sample case. Using illustrative examples, we show that
the results provide theoretical justification and guidance on applying the
bootstrap percentile method to constrained inference problems.
| [{'version': 'v1', 'created': 'Thu, 7 Dec 2017 01:51:35 GMT'}] | 2022-12-06 | [array(['Wang', 'Chunlin', ''], dtype=object)
array(['Marriott', 'Paul', ''], dtype=object)
array(['Li', 'Pengfei', ''], dtype=object)] |
30 | 1105.4028 | Naoya Arakawa | Naoya Arakawa and Masao Ogata | Orbital-Selective Superconductivity and the Effect of Lattice Distortion
in Iron-Based Superconductors | 11 pages, To appear in J. Phys. Soc. Jpn | null | 10.1143/JPSJ.80.074704 | null | cond-mat.str-el | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The superconducting (SC) state of iron-based compounds in both tetragonal and
orthorhombic phases is studied on the basis of an effective Hamiltonian
composed of the kinetic energy including the five Fe 3d-orbitals, the
orthorhombic crystalline electric field (CEF) energy, and the two-orbital
Kugel'-Khomski\u{i}-type superexchange interaction. Our basic assumption is
that the antiferromagnetic (AF) state in the parent compounds can be described
by the $d_{xz}$ and $d_{yz}$ orbitals, and that the electrons in these orbitals
have relatively strong electron correlation in the vicinity of the AF state. In
order to study the physical origin of the structure-sensitive SC transition
temperature, the effect of orthorhombic distortion is taken into account as the
energy-splitting, $\Delta_{\textrm{ortho.}}$, between the $d_{xz}$ and $d_{yz}$
orbitals. We find that the eigenvalue of the linearized gap equation decreases
accompanied with the reduction of the partial density of states for the
$d_{xz}$ and $d_{yz}$ orbitals as $\Delta_{\textrm{ortho.}}$ increases, and
that the dominant pairing symmetry is an unconventional fully gapped
$s_{+-}$-wave pairing. We also find large anisotropy of the SC gap function in
the orthorhombic phase. We propose that the CEF energy plays an important role
in controlling $T_{\textrm{c}}$ and the SC gap function, and that
orbital-selective superconductivity is a key feature in iron-based
superconductors, which causes the structure-sensitive $T_{\textrm{c}}$.
| [{'version': 'v1', 'created': 'Fri, 20 May 2011 07:54:08 GMT'}] | 2015-05-28 | [array(['Arakawa', 'Naoya', ''], dtype=object)
array(['Ogata', 'Masao', ''], dtype=object)] |
31 | cond-mat/9812440 | Igor A. Zaliznyak | I. A. Zaliznyak, C. Broholm, M. Kibune, M. Nohara, H. Takagi | Anisotropic spin freezing in the S=1/2 zigzag ladder compound SrCuO2 | 4 pages, LaTeX, submitted to PRL | null | 10.1103/PhysRevLett.83.5370 | G1999.0692 | cond-mat.mtrl-sci | null | Using magnetic neutron scattering we characterize an unusual low temperature
phase in orthorhombic SrCuO2. The material contains zigzag spin ladders formed
by pairs of S=1/2 chains (J=180 meV) coupled through a weak frustrated
interaction |J'|<0.1J. At T<Tc1=5.0(4)K an elastic peak develops in a gapless
magnetic excitation spectrum indicating spin freezing on a time scale larger
than 200 picoseconds. While the frozen state has long range commensurate
antiferromagnetic order along the chains with the correlation length exceeding
200 lattice periods along the c-axis and a substantial correlation length of
60(25) spacings along the a-axis perpendicular to the zigzag plane, only 2
lattice units are correlated along the b-axis which is the direction of the
frustrated interactions. The frozen magnetic moment of each Cu ion is very
small, 0.033(7) Bohr magneton even at T=0.35K, and has unusual temperature
dependence with a cusp at Tc2=1.5K reminiscent of a phase transition. We argue
that slow dynamics of stripe-like cooperative magnetic defects in tetragonal
a-c planes yield this anisotropic frozen state.
| [{'version': 'v1', 'created': 'Thu, 31 Dec 1998 19:26:39 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Jan 1999 15:33:01 GMT'}
{'version': 'v3', 'created': 'Wed, 2 Jun 1999 22:18:02 GMT'}] | 2009-10-31 | [array(['Zaliznyak', 'I. A.', ''], dtype=object)
array(['Broholm', 'C.', ''], dtype=object)
array(['Kibune', 'M.', ''], dtype=object)
array(['Nohara', 'M.', ''], dtype=object)
array(['Takagi', 'H.', ''], dtype=object)] |
32 | 1306.2129 | Shouhei Ma | Shouhei Ma | E8 lattice and the Kodaira dimension of orthogonal modular varieties | The previous version contained a serious error in page 12, line
22-23. It is possible to modify the main theorem, but this is now contained
in arXiv:1309.7121v3 | null | null | null | math.AG math.NT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove that for any even lattice L of signature (2,n), the modular variety
defined by the orthogonal group of the lattice L+mE_8 is of general type when m
is sufficiently large.
| [{'version': 'v1', 'created': 'Mon, 10 Jun 2013 08:09:57 GMT'}
{'version': 'v2', 'created': 'Wed, 6 Aug 2014 03:15:57 GMT'}] | 2014-08-07 | [array(['Ma', 'Shouhei', ''], dtype=object)] |
33 | 1605.04437 | Petr Pokorny | Petr Pokorny and Peter G. Brown | A reproducible method to determine the meteoroid mass index | 12 pages, 12 figures, accepted to Astronomy and Astrophysics | null | 10.1051/0004-6361/201628134 | null | astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Context. The determination of meteoroid mass indices is central to flux
measurements and evolutionary studies of meteoroid populations. However,
different authors use different approaches to fit observed data, making results
difficult to reproduce and the resulting uncertainties difficult to justify.
The real, physical, uncertainties are usually an order of magnitude higher than
the reported values.
Aims. We aim to develop a fully automated method that will measure meteoroid
mass indices and associated uncertainty. We validate our method on large radar
and optical datasets and compare results to obtain a best estimate of the true
meteoroid mass index.
Methods. Using MultiNest, a Bayesian inference tool that calculates the
evidence and explores the parameter space, we search for the best fit of
cumulative number vs. mass distributions in a four-dimensional space of
variables ($a,b,X_1,X_2$). We explore biases in meteor echo distributions using
optical meteor data as a calibration dataset to establish the systematic offset
in measured mass index values.
Results. Our best estimate for the average de-biased mass index for the
sporadic meteoroid complex, as measured by radar appropriate to the mass range
$10^{-3} > \mathrm{m} > 10^{-5}$ g, was $s=-2.10 \pm 0.08$. Optical data in the
$10^{-1} > \mathrm{m} > 10^{-3}$ g range, with the shower meteors removed,
produced $s=-2.08 \pm 0.08$. We find the mass index used by Grun et al. 1985 is
substantially larger than we measure in the $10^{-4} < m < 10^{-1}$ g range.
| [{'version': 'v1', 'created': 'Sat, 14 May 2016 17:08:03 GMT'}] | 2016-08-31 | [array(['Pokorny', 'Petr', ''], dtype=object)
array(['Brown', 'Peter G.', ''], dtype=object)] |
34 | 1809.03837 | Bao Yuan Sun | Zhi Wei Liu, Qian Zhao, Bao Yuan Sun | Correlated structure of nuclear symmetry energy from covariant nucleon
self-energy | 10 pages, 5 figures, corresponding to the talk given in NuSYM2018 | null | null | null | nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on the Hugenholtz-Van Hove theorem, the symmetry energy $J$ and its
density slope parameter $L$ are decomposed in terms of the nucleon
self-energies within the covariant density functional (CDF) theory. It is found
that two structural connections between the different ingredients of $J$ and
$L$ construct the fundamental correlation between $L$ and $J$ in the
relativistic covariant framework, while the additional contribution from the
isovector scalar channel of nucleon-nucleon interaction and those from the
second-order symmetry self-energies lead to a deviation, especially the latter
limits severely its correlation coefficient and confidence level. In addition,
the relationship between the Landau mass $M_L^*$ and the Dirac mass $M_D^*$ is
approximated to a reliable linear correlation, which is demonstrate to be
sensitive to the momentum dependence of the nucleon self-energies.
| [{'version': 'v1', 'created': 'Tue, 11 Sep 2018 13:10:17 GMT'}] | 2018-09-12 | [array(['Liu', 'Zhi Wei', ''], dtype=object)
array(['Zhao', 'Qian', ''], dtype=object)
array(['Sun', 'Bao Yuan', ''], dtype=object)] |
35 | 1707.03335 | Matteo Burzoni | Matteo Burzoni, Frank Riedel and H. Mete Soner | Viability and Arbitrage under Knightian Uncertainty | to appear in Econometrica | null | null | null | q-fin.EC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We reconsider the microeconomic foundations of financial economics. Motivated
by the importance of Knightian Uncertainty in markets, we present a model that
does not carry any probabilistic structure ex ante, yet is based on a common
order. We derive the fundamental equivalence of economic viability of asset
prices and absence of arbitrage. We also obtain a modified version of the
Fundamental Theorem of Asset Pricing using the notion of sublinear pricing
measures. Different versions of the Efficient Market Hypothesis are related to
the assumptions one is willing to impose on the common order.
| [{'version': 'v1', 'created': 'Tue, 11 Jul 2017 15:46:52 GMT'}
{'version': 'v2', 'created': 'Sun, 22 Jul 2018 11:32:13 GMT'}
{'version': 'v3', 'created': 'Mon, 25 Feb 2019 13:37:09 GMT'}
{'version': 'v4', 'created': 'Thu, 17 Oct 2019 09:13:50 GMT'}
{'version': 'v5', 'created': 'Wed, 13 May 2020 15:41:58 GMT'}
{'version': 'v6', 'created': 'Fri, 22 Jan 2021 14:02:40 GMT'}] | 2021-01-25 | [array(['Burzoni', 'Matteo', ''], dtype=object)
array(['Riedel', 'Frank', ''], dtype=object)
array(['Soner', 'H. Mete', ''], dtype=object)] |
36 | 2206.01537 | Nikolai Peskov | G.P. Vasilyev, N.V. Peskov, T.M. Lysak | Numerical simulation of heat extraction by a coaxial ground heat
exchanger under freezing conditions | 41 pages, 13 figures, 36 references | null | null | null | physics.flu-dyn | http://creativecommons.org/licenses/by/4.0/ | A new finite-difference model of heat transfer inside a shallow coaxial
ground heat exchanger and in the surrounding layered soil is presented, taking
into account the freezing of ground moisture. Three modes of heat exchanger
operation are numerically simulated: stationary mode, transient mode and
controlled mode. In the stationary mode, estimates of the sensitivity of the
heat carrier fluid outlet temperature to changes in the heat exchanger
parameters are calculated. In all modes, close attention is paid to
demonstrating the difference in the results at a negative temperature of the
fluid, calculated with and without taking into account the freezing of ground
moisture. It is shown that this difference, caused by the zero-curtain effect,
can range from 10% in the stationary mode to 35% in the control mode.
| [{'version': 'v1', 'created': 'Fri, 20 May 2022 15:48:30 GMT'}] | 2022-06-06 | [array(['Vasilyev', 'G. P.', ''], dtype=object)
array(['Peskov', 'N. V.', ''], dtype=object)
array(['Lysak', 'T. M.', ''], dtype=object)] |
37 | astro-ph/0605128 | Dr. Dirk Muders | D. Muders, H. Hafok, F. Wyrowski, E. Polehampton, A. Belloche, C.
Koenig, R. Schaaf, F. Schuller, J. Hatchell, F. v.d.Tak | APECS - The Atacama Pathfinder Experiment Control System | 4 pages, A&A, accepted | null | 10.1051/0004-6361:20065359 | null | astro-ph | null | APECS is the distributed control system of the new Atacama Pathfinder
EXperiment (APEX) telescope located on the Llano de Chajnantor at an altitude
of 5107 m in the Atacama desert in northern Chile. APECS is based on Atacama
Large Millimeter Array (ALMA) software and employs a modern, object-oriented
design using the Common Object Request Broker Architecture (CORBA) as the
middleware. New generic device interfaces simplify adding instruments to the
control system. The Python based observer command scripting language allows
using many existing software libraries and facilitates creating more complex
observing modes. A new self-descriptive raw data format (Multi-Beam FITS or
MBFITS) has been defined to store the multi-beam, multi-frequency data. APECS
provides an online pipeline for initial calibration, observer feedback and a
quick-look display. APECS is being used for regular science observations in
local and remote mode since August 2005.
| [{'version': 'v1', 'created': 'Thu, 4 May 2006 16:38:22 GMT'}] | 2009-11-11 | [array(['Muders', 'D.', ''], dtype=object)
array(['Hafok', 'H.', ''], dtype=object)
array(['Wyrowski', 'F.', ''], dtype=object)
array(['Polehampton', 'E.', ''], dtype=object)
array(['Belloche', 'A.', ''], dtype=object)
array(['Koenig', 'C.', ''], dtype=object)
array(['Schaaf', 'R.', ''], dtype=object)
array(['Schuller', 'F.', ''], dtype=object)
array(['Hatchell', 'J.', ''], dtype=object)
array(['Tak', 'F. v. d.', ''], dtype=object)] |
38 | 1612.07030 | Alexander Meister | Friedrich Liese, Alexander Meister, Johanna Kappus | Strong Gaussian approximation of the mixture Rasch model | null | null | null | null | math.ST stat.TH | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the famous Rasch model, which is applied to psychometric surveys
when n persons under test answer m questions. The score is given by a
realization of a random binary (n,m)-matrix. Its (j,k)th component indicates
whether or not the answer of the jth person to the kth question is correct. In
the mixture Rasch model one assumes that the persons are chosen randomly from a
population. We prove that the mixture Rasch model is asymptotically equivalent
to a Gaussian observation scheme in Le Cam's sense as n tends to infinity and m
is allowed to increase slowly in n. For that purpose we show a general result
on strong Gaussian approximation of the sum of independent high-dimensional
binary random vectors. As a first application we construct an asymptotic
confidence region for the difficulty parameters of the questions.
| [{'version': 'v1', 'created': 'Wed, 21 Dec 2016 09:46:43 GMT'}] | 2016-12-22 | [array(['Liese', 'Friedrich', ''], dtype=object)
array(['Meister', 'Alexander', ''], dtype=object)
array(['Kappus', 'Johanna', ''], dtype=object)] |
39 | 1705.08894 | Francis-Yan Cyr-Racine | Rebecca Krall, Francis-Yan Cyr-Racine, and Cora Dvorkin | Wandering in the Lyman-alpha Forest: A Study of Dark Matter-Dark
Radiation Interactions | 11 pages + references, 3 figures, 3 tables, v2: added references,v3:
published version | JCAP 09 (2017) 003 | 10.1088/1475-7516/2017/09/003 | null | astro-ph.CO hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The amplitude of large-scale matter fluctuations inferred from the observed
Sunyaev-Zeldovich (SZ) cluster mass function and from weak gravitational
lensing studies, when taken at face value, is in tension with measurements of
the cosmic microwave background (CMB) and baryon acoustic oscillation (BAO). In
this work, we revisit whether this possible discrepancy can be attributed to
new interactions in the dark matter sector. Focusing on a cosmological model
where dark matter interacts with a dark radiation species until the epoch of
matter-radiation equality, we find that measurements of the Lyman-alpha flux
power spectrum from the Sloan Digital Sky Survey provides no support to the
hypothesis that new dark matter interactions can resolve the possible tension
between CMB and large-scale structure (LSS). Indeed, while the addition of dark
matter-dark radiation interactions leads to an improvement of
$2\Delta\ln\mathcal{L}=12$ with respect to the standard $\Lambda$ cold dark
matter ($\Lambda$CDM) model when only CMB, BAO, and LSS data are considered,
the inclusion of Lyman-alpha data reduces the improvement of the fit to
$2\Delta\ln\mathcal{L}=6$ relative to $\Lambda$CDM. We thus conclude that the
statistical evidence for new dark matter interactions (largely driven by the
Planck SZ dataset) is marginal at best, and likely caused by systematics in the
data. We also perform a Fisher forecast analysis for the reach of a future
dataset composed of a CMB-S4 experiment combined with the Large Synoptic Survey
Telescope galaxy survey. We find that the constraint on the effective number of
fluid-like dark radiation species, $\Delta N_{\rm fluid}$, will be improved by
an order of magnitude compared to current bounds.
| [{'version': 'v1', 'created': 'Wed, 24 May 2017 18:00:00 GMT'}
{'version': 'v2', 'created': 'Tue, 30 May 2017 22:23:33 GMT'}
{'version': 'v3', 'created': 'Tue, 5 Sep 2017 15:15:45 GMT'}] | 2017-09-06 | [array(['Krall', 'Rebecca', ''], dtype=object)
array(['Cyr-Racine', 'Francis-Yan', ''], dtype=object)
array(['Dvorkin', 'Cora', ''], dtype=object)] |
40 | 1502.01827 | Guang-Tong Zhou | Guang-Tong Zhou, Sung Ju Hwang, Mark Schmidt, Leonid Sigal and Greg
Mori | Hierarchical Maximum-Margin Clustering | null | null | null | null | cs.LG cs.CV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a hierarchical maximum-margin clustering method for unsupervised
data analysis. Our method extends beyond flat maximum-margin clustering, and
performs clustering recursively in a top-down manner. We propose an effective
greedy splitting criteria for selecting which cluster to split next, and employ
regularizers that enforce feature sharing/competition for capturing data
semantics. Experimental results obtained on four standard datasets show that
our method outperforms flat and hierarchical clustering baselines, while
forming clean and semantically meaningful cluster hierarchies.
| [{'version': 'v1', 'created': 'Fri, 6 Feb 2015 08:37:55 GMT'}] | 2015-02-09 | [array(['Zhou', 'Guang-Tong', ''], dtype=object)
array(['Hwang', 'Sung Ju', ''], dtype=object)
array(['Schmidt', 'Mark', ''], dtype=object)
array(['Sigal', 'Leonid', ''], dtype=object)
array(['Mori', 'Greg', ''], dtype=object)] |
41 | 0910.4067 | Steven Kelk | Katharina T. Huber, Leo van Iersel, Steven Kelk and Radoslaw Suchecki | A Practical Algorithm for Reconstructing Level-1 Phylogenetic Networks | null | null | null | null | q-bio.PE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently much attention has been devoted to the construction of phylogenetic
networks which generalize phylogenetic trees in order to accommodate complex
evolutionary processes. Here we present an efficient, practical algorithm for
reconstructing level-1 phylogenetic networks - a type of network slightly more
general than a phylogenetic tree - from triplets. Our algorithm has been made
publicly available as the program LEV1ATHAN. It combines ideas from several
known theoretical algorithms for phylogenetic tree and network reconstruction
with two novel subroutines. Namely, an exponential-time exact and a greedy
algorithm both of which are of independent theoretical interest. Most
importantly, LEV1ATHAN runs in polynomial time and always constructs a level-1
network. If the data is consistent with a phylogenetic tree, then the algorithm
constructs such a tree. Moreover, if the input triplet set is dense and, in
addition, is fully consistent with some level-1 network, it will find such a
network. The potential of LEV1ATHAN is explored by means of an extensive
simulation study and a biological data set. One of our conclusions is that
LEV1ATHAN is able to construct networks consistent with a high percentage of
input triplets, even when these input triplets are affected by a low to
moderate level of noise.
| [{'version': 'v1', 'created': 'Wed, 21 Oct 2009 12:17:05 GMT'}] | 2009-10-22 | [array(['Huber', 'Katharina T.', ''], dtype=object)
array(['van Iersel', 'Leo', ''], dtype=object)
array(['Kelk', 'Steven', ''], dtype=object)
array(['Suchecki', 'Radoslaw', ''], dtype=object)] |
42 | math/0409124 | Marius Dadarlat | Marius Dadarlat and Cornel Pasnicu | Continuous Fields of Kirchberg C*-algebras | 17 pages, some corrections, additional remarks | null | null | null | math.OA math.KT | null | In this paper we study the C*-algebras associated to continuous fields over
locally compact metrisable zero dimensional spaces whose fibers are Kirchberg
C*-algebras satisfying the UCT. We show that these algebras are inductive
limits of finite direct sums of Kirchberg algebras and they are classified up
to isomorphism by topological invariants.
| [{'version': 'v1', 'created': 'Wed, 8 Sep 2004 16:43:25 GMT'}
{'version': 'v2', 'created': 'Thu, 18 Nov 2004 21:33:17 GMT'}] | 2007-05-23 | [array(['Dadarlat', 'Marius', ''], dtype=object)
array(['Pasnicu', 'Cornel', ''], dtype=object)] |
43 | 1912.03614 | Jun Ma | Jun Ma, Haiyue Zhu, Masayoshi Tomizuka, Tong Heng Lee | On Robust Stability and Performance with a Fixed-Order Controller Design
for Uncertain Systems | 10 pages, 4 figures | null | null | null | math.OC cs.SY eess.SY | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Typically, it is desirable to design a control system that is not only
robustly stable in the presence of parametric uncertainties but also guarantees
an adequate level of system performance. However, most of the existing methods
need to take all extreme models over an uncertain domain into consideration,
which then results in costly computation. Also, since these approaches attempt
(rather unrealistically) to guarantee the system performance over a full
frequency range, a conservative design is always admitted. Here, taking a
specific viewpoint of robust stability and performance under a stated
restricted frequency range (which is applicable in rather many real-world
situations), this paper provides an essential basis for the design of a
fixed-order controller for a system with bounded parametric uncertainties. A
Hurwitz polynomial is used in the design and the robust stability is
characterized by the notion of positive realness, such that the required robust
stability condition is then suitably successfully constructed. Also, the robust
performance criteria in terms of sensitivity shaping under different frequency
ranges are constructed based on an approach of bounded realness analysis.
Necessary and sufficient conditions are provided for both the robust stability
and robust performance criteria. Furthermore, these conditions are expressed in
the framework of linear matrix inequality (LMI) constraints, and thus can be
efficiently solved. Comparative simulations are provided to illustrate the
effectiveness and efficiency of the proposed approach.
| [{'version': 'v1', 'created': 'Sun, 8 Dec 2019 04:39:57 GMT'}
{'version': 'v2', 'created': 'Sun, 26 Apr 2020 10:29:49 GMT'}
{'version': 'v3', 'created': 'Fri, 7 Aug 2020 13:12:06 GMT'}
{'version': 'v4', 'created': 'Sun, 23 Aug 2020 19:54:59 GMT'}] | 2020-08-25 | [array(['Ma', 'Jun', ''], dtype=object)
array(['Zhu', 'Haiyue', ''], dtype=object)
array(['Tomizuka', 'Masayoshi', ''], dtype=object)
array(['Lee', 'Tong Heng', ''], dtype=object)] |
44 | cond-mat/9510156 | Hsiu-Hau Lin | Hsiu-Hau Lin (UC Santa Barbara), Matthew P. A. Fisher (UCSB, ITP) | Mode-Locking in Quantum-Hall-Effect Point Contacts | 12 pages, 8 figures, minor changes | null | 10.1103/PhysRevB.54.10593 | null | cond-mat.mes-hall | null | We study the effect of an ac drive on the current-voltage (I-V)
characteristics of a tunnel junction between two fractional Quantum Hall fluids
at filling $\nu ^{-1}$ an odd integer. Within the chiral Luttinger liquid model
of edge states, the point contact dynamics is described by a driven damped
quantum mechanical pendulum. In a semi-classical limit which ignores electron
tunnelling, this model exhibits mode-locking, which corresponds to current
plateaus in the I-V curve at integer multiples of $I= e\omega /2\pi$, with
$\omega$ the ac drive angular frequency. By analyzing the full quantum model at
non-zero $\nu$ using perturbative and exact methods, we study the effect of
quantum fluctuation on the mode-locked plateaus. For $\nu=1$ quantum
fluctuations smear completely the plateaus, leaving no trace of the ac drive.
For $\nu \ge 1/2$ smeared plateaus remain in the I-V curve, but are not
centered at the currents $I=n e \omega /2\pi$. For $\nu < 1/2$ rounded plateaus
centered around the quantized current values are found. The possibility of
using mode locking in FQHE point contacts as a current-to-frequency standard is
discussed.
| [{'version': 'v1', 'created': 'Fri, 27 Oct 1995 18:43:36 GMT'}
{'version': 'v2', 'created': 'Sat, 31 Jan 1998 11:53:44 GMT'}] | 2009-10-28 | [array(['Lin', 'Hsiu-Hau', '', 'UC Santa Barbara'], dtype=object)
array(['Fisher', 'Matthew P. A.', '', 'UCSB, ITP'], dtype=object)] |
45 | 2004.02069 | Nikolai Slavov | Nikolai Slavov | Single-cell protein analysis by mass-spectrometry | keywords: single-cell analysis; single-cell proteomics;
mass-spectrometry; isobaric carrier; sample preparation; systems biology | Current Opinion in Chemical Biology (2020) | 10.1016/j.cbpa.2020.04.018 | null | q-bio.QM q-bio.BM | http://creativecommons.org/licenses/by-nc-sa/4.0/ | Human physiology and pathology arise from the coordinated interactions of
diverse single cells. However, analyzing single cells has been limited by the
low sensitivity and throughput of analytical methods. DNA sequencing has
recently made such analysis feasible for nucleic acids, but single-cell protein
analysis remains limited. Mass-spectrometry is the most powerful method for
protein analysis, but its application to single cells faces three major
challenges: Efficiently delivering proteins/peptides to MS detectors,
identifying their sequences, and scaling the analysis to many thousands of
single cells. These challenges have motivated corresponding solutions,
including SCoPE-design multiplexing and clean, automated, and miniaturized
sample preparation. Synergistically applied, these solutions enable quantifying
thousands of proteins across many single cells and establish a solid foundation
for further advances. Building upon this foundation, the SCoPE concept will
enable analyzing subcellular organelles and post-translational modifications
while increases in multiplexing capabilities will increase the throughput and
decrease cost.
| [{'version': 'v1', 'created': 'Sun, 5 Apr 2020 02:05:20 GMT'}
{'version': 'v2', 'created': 'Thu, 23 Apr 2020 17:18:09 GMT'}
{'version': 'v3', 'created': 'Sat, 20 Jun 2020 19:51:36 GMT'}] | 2020-06-23 | [array(['Slavov', 'Nikolai', ''], dtype=object)] |
46 | 2210.10831 | Valerian-Alin Fodor | Valerian-Alin Fodor and Nicolae Popovici | Reducing the complexity of equilibrium problems and applications to best
approximation problems | null | null | null | null | math.OC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider scalar equilibrium problems governed by a bifunction in a
finite-dimensional framework. By using classical arguments in Convex Analysis,
we show that under suitable generalized convexity assumptions imposed on the
bifunction, the solutions of the equilibrium problem can be characterized by
means of extreme or exposed points of the feasible domain. Our results are
relevant for different particular instances, such as variational inequalities
and optimization problems, especially for best approximation problems.
| [{'version': 'v1', 'created': 'Wed, 19 Oct 2022 18:44:54 GMT'}] | 2022-10-21 | [array(['Fodor', 'Valerian-Alin', ''], dtype=object)
array(['Popovici', 'Nicolae', ''], dtype=object)] |
47 | 2204.11964 | Pinaki Nath Chowdhury | Pinaki Nath Chowdhury and Ayan Kumar Bhunia and Aneeshan Sain and
Subhadeep Koley and Tao Xiang and Yi-Zhe Song | SceneTrilogy: On Human Scene-Sketch and its Complementarity with Photo
and Text | Accepted in Computer Vision and Pattern Recognition (CVPR), 2023 | null | null | null | cs.CV | http://creativecommons.org/licenses/by/4.0/ | In this paper, we extend scene understanding to include that of human sketch.
The result is a complete trilogy of scene representation from three diverse and
complementary modalities -- sketch, photo, and text. Instead of learning a
rigid three-way embedding and be done with it, we focus on learning a flexible
joint embedding that fully supports the ``optionality" that this
complementarity brings. Our embedding supports optionality on two axes: (i)
optionality across modalities -- use any combination of modalities as query for
downstream tasks like retrieval, (ii) optionality across tasks --
simultaneously utilising the embedding for either discriminative (e.g.,
retrieval) or generative tasks (e.g., captioning). This provides flexibility to
end-users by exploiting the best of each modality, therefore serving the very
purpose behind our proposal of a trilogy in the first place. First, a
combination of information-bottleneck and conditional invertible neural
networks disentangle the modality-specific component from modality-agnostic in
sketch, photo, and text. Second, the modality-agnostic instances from sketch,
photo, and text are synergised using a modified cross-attention. Once learned,
we show our embedding can accommodate a multi-facet of scene-related tasks,
including those enabled for the first time by the inclusion of sketch, all
without any task-specific modifications. Project Page:
\url{http://www.pinakinathc.me/scenetrilogy}
| [{'version': 'v1', 'created': 'Mon, 25 Apr 2022 20:58:17 GMT'}
{'version': 'v2', 'created': 'Tue, 6 Dec 2022 01:36:47 GMT'}
{'version': 'v3', 'created': 'Sun, 26 Mar 2023 13:01:15 GMT'}] | 2023-03-28 | [array(['Chowdhury', 'Pinaki Nath', ''], dtype=object)
array(['Bhunia', 'Ayan Kumar', ''], dtype=object)
array(['Sain', 'Aneeshan', ''], dtype=object)
array(['Koley', 'Subhadeep', ''], dtype=object)
array(['Xiang', 'Tao', ''], dtype=object)
array(['Song', 'Yi-Zhe', ''], dtype=object)] |
48 | 1208.5717 | Alice Publications | ALICE Collaboration | Production of K$^{*}$(892)$^{0}$ and $\phi$(1020) in pp collisions at
$\sqrt{s}=7$ TeV | 28 pages, 12 captioned figures, 3 tables, authors from page 23,
published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/3101 | Eur. Phys. J. C72 (2012) 2183 | 10.1140/epjc/s10052-012-2183-y | CERN-PH-EP-2012-221 | hep-ex nucl-ex | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The production of K$^{*}$(892)$^{0}$ and $\phi$(1020) in pp collisions at
$\sqrt{s}=7$ TeV was measured by the ALICE experiment at the LHC. The yields
and the transverse momentum spectra d$^{2}$N/d$y$d$p_{\rm T}$ at midrapidity
$|y|<0.5$ in the range $0<p_{\rm T}<6$ GeV/$c$ for K$^{*}$(892)$^{0}$ and
$0.4<p_{\rm T}<6$ GeV/$c$ for $\phi$(1020) are reported and compared to model
predictions. Using the yield of pions, kaons, and Omega baryons measured
previously by ALICE at $\sqrt{s}=7$ TeV, the ratios K$^{*}$/K$^{-}$,
$\phi$/K$^{*}$, $\phi$/K$^{-}$, $\phi/\pi^{-}$, and ($\Omega$ +
$\overline{\Omega}$)/$\phi$ are presented. The values of the K$^{*}$/K$^{-}$,
$\phi$/K$^{*}$ and $\phi$/K$^{-}$ ratios are similar to those found at lower
centre-of-mass energies. In contrast, the $\phi/\pi^{-}$ ratio, which has been
observed to increase with energy, seems to saturate above 200 GeV. The
($\Omega$ + $\overline{\Omega}$)/$\phi$ ratio in the $p_{\rm T}$ range $1$-$5$
GeV/$c$ is found to be in good agreement with the prediction of the HIJING/BB
v2.0 model with a strong colour field.
| [{'version': 'v1', 'created': 'Tue, 28 Aug 2012 17:08:32 GMT'}
{'version': 'v2', 'created': 'Mon, 1 Oct 2012 10:10:50 GMT'}
{'version': 'v3', 'created': 'Mon, 3 Apr 2017 07:27:36 GMT'}] | 2017-04-04 | [array(['ALICE Collaboration', '', ''], dtype=object)] |
49 | 1402.0048 | Weonjong Lee | Taegil Bae, Yong-Chull Jang, Hwancheol Jeong, Chulwoo Jung, Hyung-Jin
Kim, Jangho Kim, Jongjeong Kim, Kwangwoo Kim, Sunghee Kim, Weonjong Lee,
Jaehoon Leem, Jeonghwan Pak, Sungwoo Park, Stephen R. Sharpe, Boram Yoon
(SWME Collaboration) | Improved determination of $B_K$ with staggered quarks | 6 pages, 5 tables, 2 figures, updated references | Phys. Rev. D 89, 074504 (2014) | 10.1103/PhysRevD.89.074504 | null | hep-lat hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present results for the kaon mixing parameter $B_K$ obtained using
improved staggered fermions on a much enlarged set of MILC asqtad lattices.
Compared to our previous publication, which was based largely on a single
ensemble at each of the three lattice spacings $a\approx 0.09\;$fm, $0.06\;$fm
and $0.045\;$fm, we have added seven new fine and four new superfine ensembles,
with a range of values of the light and strange sea-quark masses. We have also
increased the number of measurements on one of the original ensembles. This
allows us to do controlled extrapolations in the light and strange sea-quark
masses, which we do simultaneously with the continuum extrapolation. This
reduces the extrapolation error and improves the reliability of our error
estimates. Our final result is $\hat{B}_K = 0.7379 \pm 0.0047 (\text{stat}) \pm
0.0365 (\text{sys})$.
| [{'version': 'v1', 'created': 'Sat, 1 Feb 2014 03:30:43 GMT'}
{'version': 'v2', 'created': 'Fri, 21 Feb 2014 04:13:24 GMT'}] | 2014-04-23 | [array(['Bae', 'Taegil', '', 'SWME Collaboration'], dtype=object)
array(['Jang', 'Yong-Chull', '', 'SWME Collaboration'], dtype=object)
array(['Jeong', 'Hwancheol', '', 'SWME Collaboration'], dtype=object)
array(['Jung', 'Chulwoo', '', 'SWME Collaboration'], dtype=object)
array(['Kim', 'Hyung-Jin', '', 'SWME Collaboration'], dtype=object)
array(['Kim', 'Jangho', '', 'SWME Collaboration'], dtype=object)
array(['Kim', 'Jongjeong', '', 'SWME Collaboration'], dtype=object)
array(['Kim', 'Kwangwoo', '', 'SWME Collaboration'], dtype=object)
array(['Kim', 'Sunghee', '', 'SWME Collaboration'], dtype=object)
array(['Lee', 'Weonjong', '', 'SWME Collaboration'], dtype=object)
array(['Leem', 'Jaehoon', '', 'SWME Collaboration'], dtype=object)
array(['Pak', 'Jeonghwan', '', 'SWME Collaboration'], dtype=object)
array(['Park', 'Sungwoo', '', 'SWME Collaboration'], dtype=object)
array(['Sharpe', 'Stephen R.', '', 'SWME Collaboration'], dtype=object)
array(['Yoon', 'Boram', '', 'SWME Collaboration'], dtype=object)] |
50 | 1103.0069 | Fei Wang | Fei Wang | Supersymmetry Breaking Scalar Masses and Trilinear Soft Terms From
High-Dimensional Operators in E_6 SUSY GUT | Nucl.Phys.B style, 41 pages, no figure | Nucl.Phys.B851:104-142,2011 | 10.1016/j.nuclphysb.2011.05.017 | null | hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the GmSUGRA scenario with the high-dimensional operators containing the
GUT Higgs fields, we systematically studied the supersymmetry breaking scalar
masses, SM fermion Yukawa coupling terms, and trilinear soft terms in the E_6
SUSY GUT model where the gauge symmetry is broken down to the SO(10)\tm U(1)
gauge symmetry, SU(3)_C\times SU(3)_L \times SU(3)_R gauge symmetry,
SU(6)\times SU(2)_a (a={\rm L,R,X}) gauge symmetry, flipped SU(5) gauge
symmetry etc. In addition, we considered the scalar and gaugino mass relations,
which can be preserved from the GUT scale to the electroweak scale under
one-loop RGE running, in the SU(3)_C\times SU(3)_L \times SU(3)_R model arising
from the E_6 model. With such relations, we may distinguish the mSUGRA and
GmSUGRA scenarios if we can measure the supersymmetric particle spectrum at the
LHC and ILC.
| [{'version': 'v1', 'created': 'Tue, 1 Mar 2011 02:38:10 GMT'}
{'version': 'v2', 'created': 'Sat, 16 Jul 2011 08:58:53 GMT'}] | 2011-07-19 | [array(['Wang', 'Fei', ''], dtype=object)] |
51 | 1211.3355 | Nicola Pompeo | N. Pompeo | Theory of measurements of electrodynamic properties in anisotropic
superconductors in tilted magnetic fields. Part I: flux flow and Campbell
regimes | 13 pages, 3 figures | null | null | null | cond-mat.supr-con | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The vortex dynamics of uniaxial anisotropic superconductors in magnetic
fields applied with arbitrary orientation is theoretically studied. Focus is on
the model for electrical transport experiments in the linear regime. Relevant
vortex parameters, like the viscous drag, the vortex mobility and pinning
constant (with point pins), together with the flux flow and Campbell
resistivities, are derived in tensor form, in the very different free flux flow
and pinned Campbell regimes. The applicability to the various tensor quantities
of the well-known scaling laws for the angular dependence on the field
orientation is commented. Moreover, it is shown that the experiments do not
generally yield the intrinsic values of the anisotropic viscosity and pinning
constant. Explicit expressions relating measured and intrinsic quantities are
given.
| [{'version': 'v1', 'created': 'Wed, 14 Nov 2012 16:40:18 GMT'}] | 2012-11-15 | [array(['Pompeo', 'N.', ''], dtype=object)] |
52 | 1709.03041 | Thu Nguyen Van | Nguyen Van Thu | The forces on a single interacting Bose-Einstein condensate | null | null | null | null | cond-mat.stat-mech cond-mat.quant-gas | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using double parabola approximation for a single Bose-Einstein condensate
confined between double slabs we proved that in grand canonical ensemble (GCE)
the ground state with Robin boundary condition (BC) is favored, whereas in
canonical ensemble (CE) our system undergoes from ground state with Robin BC to
the one with Dirichlet BC in small-$L$ region and vice versa for large-$L$
region and phase transition in space of the ground state is the first order.
The surface tension force and Casimir force are also considered in both CE and
GCE in detail.
| [{'version': 'v1', 'created': 'Sun, 10 Sep 2017 03:49:44 GMT'}
{'version': 'v2', 'created': 'Sun, 1 Oct 2017 07:36:38 GMT'}] | 2017-10-03 | [array(['Van Thu', 'Nguyen', ''], dtype=object)] |
53 | 1810.09544 | Tiberiu Harko | Man Kwong Mak, Chun Sing Leung, Tiberiu Harko | Solving the nonlinear biharmonic equation by the Laplace-Adomian and
Adomian Decomposition Methods | 20 pages, 4 figures | Surveys in Mathematics and its Applications, Volume 13 (2018),
183-213 | null | null | math.AP math-ph math.CA math.MP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The biharmonic equation, as well as its nonlinear and inhomogeneous
generalizations, plays an important role in engineering and physics. In
particular the focusing biharmonic nonlinear Schr\"{o}dinger equation, and its
standing wave solutions, have been intensively investigated. In the present
paper we consider the applications of the Laplace-Adomian and Adomian
Decomposition Methods for obtaining semi-analytical solutions of the
generalized biharmonic equations of the type $\Delta ^{2}y+\alpha \Delta
y+\omega y+b^{2}+g\left( y\right) =f$, where $\alpha $, $\omega $ and $b$ are
constants, and $g$ and $f$ are arbitrary functions of $y$ and the independent
variable, respectively. After introducing the general algorithm for the
solution of the biharmonic equation, as an application we consider the
solutions of the one-dimensional and radially symmetric biharmonic standing
wave equation $\Delta ^{2}R+R-R^{2\sigma +1}=0$, with $\sigma = {\rm
constant}$. The one-dimensional case is analyzed by using both the
Laplace-Adomian and the Adomian Decomposition Methods, respectively, and the
truncated series solutions are compared with the exact numerical solution. The
power series solution of the radial biharmonic standing wave equation is also
obtained, and compared with the numerical solution.
| [{'version': 'v1', 'created': 'Fri, 19 Oct 2018 03:01:09 GMT'}] | 2018-10-24 | [array(['Mak', 'Man Kwong', ''], dtype=object)
array(['Leung', 'Chun Sing', ''], dtype=object)
array(['Harko', 'Tiberiu', ''], dtype=object)] |
54 | 1907.02865 | Nathan Painchaud | Nathan Painchaud and Youssef Skandarani and Thierry Judge and Olivier
Bernard and Alain Lalande and Pierre-Marc Jodoin | Cardiac MRI Segmentation with Strong Anatomical Guarantees | 9 pages, accepted for MICCAI 2019; camera ready corrections,
acknowledgments | in Medical Image Computing and Computer Assisted Intervention -
MICCAI 2019, 2019, pp. 632-640 | 10.1007/978-3-030-32245-8_70 | null | eess.IV cs.CV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recent publications have shown that the segmentation accuracy of modern-day
convolutional neural networks (CNN) applied on cardiac MRI can reach the
inter-expert variability, a great achievement in this area of research.
However, despite these successes, CNNs still produce anatomically inaccurate
segmentations as they provide no guarantee on the anatomical plausibility of
their outcome, even when using a shape prior. In this paper, we propose a
cardiac MRI segmentation method which always produces anatomically plausible
results. At the core of the method is an adversarial variational autoencoder
(aVAE) whose latent space encodes a smooth manifold on which lies a large
spectrum of valid cardiac shapes. This aVAE is used to automatically warp
anatomically inaccurate cardiac shapes towards a close but correct shape. Our
method can accommodate any cardiac segmentation method and convert its
anatomically implausible results to plausible ones without affecting its
overall geometric and clinical metrics. With our method, CNNs can now produce
results that are both within the inter-expert variability and always
anatomically plausible.
| [{'version': 'v1', 'created': 'Fri, 5 Jul 2019 14:45:21 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Aug 2019 16:19:41 GMT'}] | 2020-06-17 | [array(['Painchaud', 'Nathan', ''], dtype=object)
array(['Skandarani', 'Youssef', ''], dtype=object)
array(['Judge', 'Thierry', ''], dtype=object)
array(['Bernard', 'Olivier', ''], dtype=object)
array(['Lalande', 'Alain', ''], dtype=object)
array(['Jodoin', 'Pierre-Marc', ''], dtype=object)] |
55 | 1712.00418 | Gavin Lamb P | Gavin P Lamb, Masaomi Tanaka and Shiho Kobayashi | Transient Survey Rates for Orphan Afterglows from Compact Merger Jets | 8 pages, 2 figures, 1 table. Accepted by MNRAS | null | 10.1093/mnras/sty484 | null | astro-ph.HE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Orphan afterglows from short $\gamma$-ray bursts (GRB) are potential
candidates for electromagnetic (EM) counterpart searches to gravitational wave
(GW) detected neutron star or neutron star black hole mergers. Various jet
dynamical and structure models have been proposed that can be tested by the
detection of a large sample of GW-EM counterparts. We make predictions for the
expected rate of optical transients from these jet models for future survey
telescopes, without a GW or GRB trigger. A sample of merger jets is generated
in the redshift limits $0\leq z\leq 3.0$, and the expected peak $r$-band flux
and timescale above the LSST or ZTF detection threshold, $m_r=24.5$ and $20.4$
respectively, is calculated. General all-sky rates are shown for $m_r\leq26.0$
and $m_r\leq21.0$. The detected orphan and GRB afterglow rate depends on jet
model, typically $16\lesssim R\lesssim 76$ yr$^{-1}$ for the LSST, and
$2\lesssim R \lesssim 8$ yr$^{-1}$ for ZTF. An excess in the rate of orphan
afterglows for a survey to a depth of $m_r\leq26$ would indicate that merger
jets have a dominant low-Lorentz factor population, or the jets exhibit
intrinsic jet structure. Careful filtering of transients is required to
successfully identify orphan afterglows from either short or long GRB
progenitors.
| [{'version': 'v1', 'created': 'Fri, 1 Dec 2017 17:26:23 GMT'}
{'version': 'v2', 'created': 'Wed, 6 Dec 2017 13:55:39 GMT'}
{'version': 'v3', 'created': 'Mon, 19 Feb 2018 13:45:26 GMT'}] | 2018-03-14 | [array(['Lamb', 'Gavin P', ''], dtype=object)
array(['Tanaka', 'Masaomi', ''], dtype=object)
array(['Kobayashi', 'Shiho', ''], dtype=object)] |
56 | hep-lat/0101014 | Chulwoo Jung | Xiangdong Ji and Chulwoo Jung (University of Maryland) | Studying Hadronic Structure of the Photon in Lattice QCD | 7 pages, 1 figure | Phys.Rev.Lett. 86 (2001) 208 | 10.1103/PhysRevLett.86.208 | UMD PP#01-007, DOE/ER/40762-214 | hep-lat hep-ph | null | We show that the matrix element of a local quark-gluon operator in the photon
state, $<\gamma(k\lambda)|\hat O| \gamma(k\lambda)>$, can be calculated in
lattice QCD. The result is generalized to other quantities involving space-like
photons, including the transition form factor $\gamma\gamma^*\to \pi^0$ and the
virtual-photon-nucleon Compton amplitude $<\gamma^*N |\gamma^*N>$ which can be
used to define the generalized Drell-Hearn-Gerasimov and Bjorken sum rules.
| [{'version': 'v1', 'created': 'Mon, 22 Jan 2001 17:29:41 GMT'}] | 2009-11-07 | [array(['Ji', 'Xiangdong', '', 'University of Maryland'], dtype=object)
array(['Jung', 'Chulwoo', '', 'University of Maryland'], dtype=object)] |
57 | 1904.05219 | Damien Gagnier | D. Gagnier, M. Rieutord, C. Charbonnel, B. Putigny, F. Espinosa Lara | Evolution of rotation in rapidly rotating early-type stars during the
main sequence with 2D models | 12 pages, accepted in Astronomy and Astrophysics | A&A 625, A89 (2019) | 10.1051/0004-6361/201832581 | null | astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The understanding of the rotational evolution of early-type stars is deeply
related to that of anisotropic mass and angular momentum loss. In this paper,
we aim to clarify the rotational evolution of rapidly rotating early-type stars
along the main sequence (MS). We have used the 2D ESTER code to compute and
evolve isolated rapidly rotating early-type stellar models along the MS, with
and without anisotropic mass loss. We show that stars with $Z=0.02$ and masses
between $5$ and $7~M_\odot$ reach criticality during the main sequence provided
their initial angular velocity is larger than 50% of the Keplerian one. More
massive stars are subject to radiation-driven winds and to an associated loss
of mass and angular momentum. We find that this angular momentum extraction
from the outer layers can prevent massive stars from reaching critical rotation
and greatly reduce the degree of criticality at the end of the MS. Our model
includes the so-called bi-stability jump of the $\dot{M}-T_{\rm eff}$ relation
of 1D-models. This discontinuity now shows up in the latitude variations of the
mass-flux surface density, endowing rotating massive stars with either a
single-wind regime (no discontinuity) or a two-wind regime (a discontinuity).
In the two-winds-regime, mass loss and angular momentum loss are strongly
increased at low latitudes inducing a faster slow-down of the rotation.
However, predicting the rotational fate of a massive star is difficult, mainly
because of the non-linearity of the phenomena involved and their strong
dependence on uncertain prescriptions. Moreover, the very existence of the
bi-stability jump in mass-loss rate remains to be substantiated by
observations.
| [{'version': 'v1', 'created': 'Wed, 10 Apr 2019 14:41:11 GMT'}] | 2019-05-22 | [array(['Gagnier', 'D.', ''], dtype=object)
array(['Rieutord', 'M.', ''], dtype=object)
array(['Charbonnel', 'C.', ''], dtype=object)
array(['Putigny', 'B.', ''], dtype=object)
array(['Lara', 'F. Espinosa', ''], dtype=object)] |
58 | 1507.07281 | Jeffrey Eldred | Michael Backfish, Jeffrey Eldred, Cheng Yang Tan and Robert Zwaska | Beam Tests of Beampipe Coatings for Electron Cloud Mitigation in
Fermilab Main Injector | null | null | 10.1109/TNS.2015.2462018 | null | physics.acc-ph | http://creativecommons.org/licenses/by/4.0/ | Electron cloud beam instabilities are an important consideration in virtually
all high-energy particle accelerators and could pose a formidable challenge to
forthcoming high-intensity accelerator upgrades. Dedicated tests have shown
beampipe coatings dramatically reduce the density of electron cloud in particle
accelerators. In this work, we evaluate the performance of titanium nitride,
amorphous carbon, and diamond-like carbon as beampipe coatings for the
mitigation of electron cloud in the Fermilab Main Injector. Altogether our
tests represent 2700 ampere-hours of proton operation spanning five years.
Three electron cloud detectors, retarding field analyzers, are installed in a
straight section and allow a direct comparison between the electron flux in the
coated and uncoated stainless steel beampipe. We characterize the electron flux
as a function of intensity up to a maximum of 50 trillion protons per cycle.
Each beampipe material conditions in response to electron bombardment from the
electron cloud and we track the changes in these materials as a function of
time and the number of absorbed electrons. Contamination from an unexpected
vacuum leak revealed a potential vulnerability in the amorphous carbon beampipe
coating. We measure the energy spectrum of electrons incident on the stainless
steel, titanium nitride and amorphous carbon beampipes. We find the electron
cloud signal is highly sensitive to stray magnetic fields and bunch-length over
the Main Injector ramp cycle. We conduct a complete survey of the stray
magnetic fields at the test station and compare the electron cloud signal to
that in a field-free region.
| [{'version': 'v1', 'created': 'Mon, 27 Jul 2015 02:40:25 GMT'}] | 2016-05-25 | [array(['Backfish', 'Michael', ''], dtype=object)
array(['Eldred', 'Jeffrey', ''], dtype=object)
array(['Tan', 'Cheng Yang', ''], dtype=object)
array(['Zwaska', 'Robert', ''], dtype=object)] |
59 | cond-mat/9608022 | Kay Wiese | Kay Joerg Wiese and Francois David | New Renormalization Group Results for Scaling of Self-Avoiding Tethered
Membranes | 97 pages, 120 .eps-files | Nucl. Phys. B 487 (1997) 529-632 | 10.1016/S0550-3213(96)00588-3 | Saclay T96/089 | cond-mat | null | The scaling properties of self-avoiding polymerized 2-dimensional membranes
are studied via renormalization group methods based on a multilocal operator
product expansion. The renormalization group functions are calculated to second
order. This yields the scaling exponent nu to order epsilon^2. Our
extrapolations for nu agree with the Gaussian variational estimate for large
space dimension d and are close to the Flory estimate for d=3. The interplay
between self-avoidance and rigidity at small d is briefly discussed.
| [{'version': 'v1', 'created': 'Fri, 26 Jul 1996 12:38:33 GMT'}] | 2009-10-28 | [array(['Wiese', 'Kay Joerg', ''], dtype=object)
array(['David', 'Francois', ''], dtype=object)] |
60 | math/0406525 | Andrew T. A. Wood | Grace Chan and Andrew T. A. Wood | Estimation of fractal dimension for a class of Non-Gaussian stationary
processes and fields | null | Annals of Statistics 2004, Vol. 32, No. 3, 1222-1260 | 10.1214/009053604000000346 | IMS-AOS-AOS160 | math.ST stat.TH | null | We present the asymptotic distribution theory for a class of increment-based
estimators of the fractal dimension of a random field of the form g{X(t)},
where g:R\to R is an unknown smooth function and X(t) is a real-valued
stationary Gaussian field on R^d, d=1 or 2, whose covariance function obeys a
power law at the origin. The relevant theoretical framework here is ``fixed
domain'' (or ``infill'') asymptotics. Surprisingly, the limit theory in this
non-Gaussian case is somewhat richer than in the Gaussian case (the latter is
recovered when g is affine), in part because estimators of the type considered
may have an asymptotic variance which is random in the limit. Broadly, when g
is smooth and nonaffine, three types of limit distributions can arise, types
(i), (ii) and (iii), say. Each type can be represented as a random integral.
More specifically, type (i) can be represented as the integral of a certain
random function with respect to Lebesgue measure; type (ii) can be represented
as the integral of a second random function
| [{'version': 'v1', 'created': 'Fri, 25 Jun 2004 10:40:07 GMT'}] | 2007-06-13 | [array(['Chan', 'Grace', ''], dtype=object)
array(['Wood', 'Andrew T. A.', ''], dtype=object)] |
61 | 0904.3702 | Raoul Santachiara | Benoit Estienne, Nicolas Regnault and Raoul Santachiara | Clustering properties, Jack polynomials and unitary conformal field
theories | 20 pages. Published version | Nucl. Phys. B824, 539-562(2010) | 10.1016/j.nuclphysb.2009.09.002 | null | cond-mat.str-el cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Recently, Jack polynomials have been proposed as natural generalizations of
Z_k Read-Rezayi states describing non-Abelian fractional quantum Hall systems.
These polynomials are conjectured to be related to correlation functions of a
class of W-conformal field theories based on the Lie algebra A_{k-1}. These
theories can be considered as non-unitary solutions of a more general series of
CFTs with Z_k symmetry, the parafermionic theories. Starting from the
observation that some parafermionic theories admit unitary solutions as well,
we show, by computing the corresponding correlation functions, that these
theories provide trial wavefunctions which satisfy the same clustering
properties as the non-unitary ones. We show explicitly that, although the
wavefunctions constructed by unitary CFTs cannot be expressed as a single Jack
polynomial, they still show a fine structure where the mathematical properties
of the Jack polynomials play a major role.
| [{'version': 'v1', 'created': 'Thu, 23 Apr 2009 14:31:22 GMT'}
{'version': 'v2', 'created': 'Thu, 26 Nov 2009 11:01:58 GMT'}] | 2015-05-13 | [array(['Estienne', 'Benoit', ''], dtype=object)
array(['Regnault', 'Nicolas', ''], dtype=object)
array(['Santachiara', 'Raoul', ''], dtype=object)] |
62 | 2212.05505 | Xiaohui Jiang | Shihao Wang, Xiaohui Jiang, Ying Li | Focal-PETR: Embracing Foreground for Efficient Multi-Camera 3D Object
Detection | Tech Report | null | null | null | cs.CV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The dominant multi-camera 3D detection paradigm is based on explicit 3D
feature construction, which requires complicated indexing of local image-view
features via 3D-to-2D projection. Other methods implicitly introduce geometric
positional encoding and perform global attention (e.g., PETR) to build the
relationship between image tokens and 3D objects. The 3D-to-2D perspective
inconsistency and global attention lead to a weak correlation between
foreground tokens and queries, resulting in slow convergence. We propose
Focal-PETR with instance-guided supervision and spatial alignment module to
adaptively focus object queries on discriminative foreground regions.
Focal-PETR additionally introduces a down-sampling strategy to reduce the
consumption of global attention. Due to the highly parallelized implementation
and down-sampling strategy, our model, without depth supervision, achieves
leading performance on the large-scale nuScenes benchmark and a superior speed
of 30 FPS on a single RTX3090 GPU. Extensive experiments show that our method
outperforms PETR while consuming 3x fewer training hours. The code will be made
publicly available.
| [{'version': 'v1', 'created': 'Sun, 11 Dec 2022 13:38:54 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Dec 2022 09:28:01 GMT'}] | 2022-12-14 | [array(['Wang', 'Shihao', ''], dtype=object)
array(['Jiang', 'Xiaohui', ''], dtype=object)
array(['Li', 'Ying', ''], dtype=object)] |
63 | 1810.03176 | Xun Gao | Xun Gao and Luming Duan | Efficient classical simulation of noisy quantum computation | 11 pages, 6 figures | null | null | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Understanding the boundary between classical simulatability and the power of
quantum computation is a fascinating topic. Direct simulation of noisy quantum
computation requires solving an open quantum many-body system, which is very
costly. Here, we develop a tensor network formalism to simulate the
time-dynamics and the Fourier spectrum of noisy quantum circuits. We prove that
under general conditions most of the quantum circuits at any constant level of
noise per gate can be efficiently simulated classically with the cost
increasing only polynomially with the size of the circuits. The result holds
even if we have perfect noiseless quantum gates for some subsets of operations,
such as all the gates in the Clifford group. This surprising result reveals the
subtle relations between classical simulatability, quantum supremacy, and
fault-tolerant quantum computation. The developed simulation tools may also be
useful for solving other open quantum many-body systems.
| [{'version': 'v1', 'created': 'Sun, 7 Oct 2018 16:44:18 GMT'}] | 2018-10-09 | [array(['Gao', 'Xun', ''], dtype=object)
array(['Duan', 'Luming', ''], dtype=object)] |
64 | math/0603448 | Guillaume Lecue | Guillaume Lecu\'e (PMA) | Lower bounds and aggregation in density estimation | null | null | null | null | math.ST stat.TH | null | In this paper we prove the optimality of an aggregation procedure. We prove
lower bounds for aggregation of model selection type of $M$ density estimators
for the Kullback-Leiber divergence (KL), the Hellinger's distance and the
$L\_1$-distance. The lower bound, with respect to the KL distance, can be
achieved by the on-line type estimate suggested, among others, by Yang (2000).
Combining these results, we state that $\log M/n$ is an optimal rate of
aggregation in the sense of Tsybakov (2003), where $n$ is the sample size.
| [{'version': 'v1', 'created': 'Sat, 18 Mar 2006 06:52:49 GMT'}] | 2016-08-16 | [array(['Lecué', 'Guillaume', '', 'PMA'], dtype=object)] |
65 | cond-mat/0110543 | Toni Neicu | T. Neicu and A. Kudrolli | Periodic orbit analysis of an elastodynamic resonator using shape
deformation | submitted to Europhysics Letters | Europhys. Lett., 57 (3), pp. 341-347 (2002) | 10.1209/epl/i2002-00460-0 | null | cond-mat | null | We report the first definitive experimental observation of periodic orbits
(POs) in the spectral properties of an elastodynamic system. The Fourier
transform of the density of flexural modes show peaks that correspond to stable
and unstable POs of a clover shaped quartz plate. We change the shape of the
plate and find that the peaks corresponding to the POs that hit only the
unperturbed sides are unchanged proving the correspondence. However, an exact
match to the length of the main POs could be made only after a small rescaling
of the experimental results. Statistical analysis of the level dynamics also
shows the effect of the stable POs.
| [{'version': 'v1', 'created': 'Thu, 25 Oct 2001 19:25:52 GMT'}] | 2009-11-07 | [array(['Neicu', 'T.', ''], dtype=object)
array(['Kudrolli', 'A.', ''], dtype=object)] |
66 | 2212.03678 | YuYang Sun | YuYang Sun, ZhiYong Zhang, Isao Echizen, Huy H.Nguyen, ChangZhen Qiu
and Lu Sun | Face Forgery Detection Based on Facial Region Displacement Trajectory
Series | null | null | null | null | cs.CV cs.AI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Deep-learning-based technologies such as deepfakes ones have been attracting
widespread attention in both society and academia, particularly ones used to
synthesize forged face images. These automatic and professional-skill-free face
manipulation technologies can be used to replace the face in an original image
or video with any target object while maintaining the expression and demeanor.
Since human faces are closely related to identity characteristics, maliciously
disseminated identity manipulated videos could trigger a crisis of public trust
in the media and could even have serious political, social, and legal
implications. To effectively detect manipulated videos, we focus on the
position offset in the face blending process, resulting from the forced affine
transformation of the normalized forged face. We introduce a method for
detecting manipulated videos that is based on the trajectory of the facial
region displacement. Specifically, we develop a virtual-anchor-based method for
extracting the facial trajectory, which can robustly represent displacement
information. This information was used to construct a network for exposing
multidimensional artifacts in the trajectory sequences of manipulated videos
that is based on dual-stream spatial-temporal graph attention and a gated
recurrent unit backbone. Testing of our method on various manipulation datasets
demonstrated that its accuracy and generalization ability is competitive with
that of the leading detection methods.
| [{'version': 'v1', 'created': 'Wed, 7 Dec 2022 14:47:54 GMT'}] | 2022-12-08 | [array(['Sun', 'YuYang', ''], dtype=object)
array(['Zhang', 'ZhiYong', ''], dtype=object)
array(['Echizen', 'Isao', ''], dtype=object)
array(['Nguyen', 'Huy H.', ''], dtype=object)
array(['Qiu', 'ChangZhen', ''], dtype=object)
array(['Sun', 'Lu', ''], dtype=object)] |
67 | 2109.12070 | Anindya Bijoy Das | Anindya Bijoy Das and Aditya Ramamoorthy | A Unified Treatment of Partial Stragglers and Sparse Matrices in Coded
Matrix Computation | null | null | null | null | cs.IT math.IT | http://creativecommons.org/licenses/by/4.0/ | The overall execution time of distributed matrix computations is often
dominated by slow worker nodes (stragglers) within the clusters. Recently,
different coding techniques have been utilized to mitigate the effect of
stragglers where worker nodes are assigned the job of processing encoded
submatrices of the original matrices. In many machine learning or optimization
problems the relevant matrices are often sparse. Several prior coded
computation methods operate with dense linear combinations of the original
submatrices; this can significantly increase the worker node computation times
and consequently the overall job execution time. Moreover, several existing
techniques treat the stragglers as failures (erasures) and discard their
computations. In this work, we present a coding approach which operates with
limited encoding of the original submatrices and utilizes the partial
computations done by the slower workers. While our scheme can continue to have
the optimal threshold of prior work, it also allows us to trade off the
straggler resilience with the worker computation speed for sparse input
matrices. Extensive numerical experiments done in AWS (Amazon Web Services)
cluster confirm that the proposed approach enhances the speed of the worker
computations (and thus the whole process) significantly.
| [{'version': 'v1', 'created': 'Fri, 24 Sep 2021 16:53:12 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Dec 2021 17:08:22 GMT'}
{'version': 'v3', 'created': 'Mon, 27 Jun 2022 17:37:06 GMT'}] | 2022-06-28 | [array(['Das', 'Anindya Bijoy', ''], dtype=object)
array(['Ramamoorthy', 'Aditya', ''], dtype=object)] |
68 | 1909.04203 | C.B. Scott | C.B. Scott, Eric Mjolsness | Novel diffusion-derived distance measures for graphs | null | null | null | null | cs.LG cs.DM math.CO stat.ML | http://creativecommons.org/licenses/by/4.0/ | We define a new family of similarity and distance measures on graphs, and
explore their theoretical properties in comparison to conventional distance
metrics. These measures are defined by the solution(s) to an optimization
problem which attempts find a map minimizing the discrepancy between two graph
Laplacian exponential matrices, under norm-preserving and sparsity constraints.
Variants of the distance metric are introduced to consider such optimized maps
under sparsity constraints as well as fixed time-scaling between the two
Laplacians. The objective function of this optimization is multimodal and has
discontinuous slope, and is hence difficult for univariate optimizers to solve.
We demonstrate a novel procedure for efficiently calculating these optima for
two of our distance measure variants. We present numerical experiments
demonstrating that (a) upper bounds of our distance metrics can be used to
distinguish between lineages of related graphs; (b) our procedure is faster at
finding the required optima, by as much as a factor of 10^3; and (c) the upper
bounds satisfy the triangle inequality exactly under some assumptions and
approximately under others. We also derive an upper bound for the distance
between two graph products, in terms of the distance between the two pairs of
factors. Additionally, we present several possible applications, including the
construction of infinite "graph limits" by means of Cauchy sequences of graphs
related to one another by our distance measure.
| [{'version': 'v1', 'created': 'Tue, 10 Sep 2019 00:17:18 GMT'}] | 2019-09-11 | [array(['Scott', 'C. B.', ''], dtype=object)
array(['Mjolsness', 'Eric', ''], dtype=object)] |
69 | 2101.09332 | Perrot K\'evin | Viet-Ha Nguyen and K\'evin Perrot | Rikudo is NP-complete | null | null | null | null | cs.DM cs.CC | http://creativecommons.org/licenses/by/4.0/ | Rikudo is a number-placement puzzle, where the player is asked to complete a
Hamiltonian path on a hexagonal grid, given some clues (numbers already placed
and edges of the path). We prove that the game is complete for NP, even if the
puzzle has no hole. When all odd numbers are placed it is in P, whereas it is
still NP-hard when all numbers of the form $3k+1$ are placed.
| [{'version': 'v1', 'created': 'Fri, 22 Jan 2021 21:07:22 GMT'}] | 2021-01-26 | [array(['Nguyen', 'Viet-Ha', ''], dtype=object)
array(['Perrot', 'Kévin', ''], dtype=object)] |
70 | 1710.08021 | Lorenzo Casarin | Lorenzo Casarin | On higher-derivative gauge theories | Based on the thesis prepared as final dissertation for the MSc degree
in Physics at the University of Padova. 68 pages; added reference in 1.4 | null | null | null | hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the main properties and the one-loop renormalization of
a Yang-Mills theory in which the kinetic term contains also a fourth-order
differential operator; in particular, we add to the Yang-Mills Lagrangian the
most general contribution of mass dimension six, weighted with a dimensionful
parameter. This model is renormalizable; in the literature two values for the
beta function for the gauge coupling have been reported, one obtained using the
heat kernel approach and one with Feynman diagrams. In this work we repeat the
computation using heat kernel techniques confirming the latter result. We also
considered coupling with matter.
We then study the supersymmetric extension of the model; this is a nontrivial
task because of the complicate structure of the higher-derivative term. Some
partial results were known, but a computation of the beta functions for the
full supersymmetric non-Abelian higher-derivative gauge theory was missing. We
make use of the (unextended) supersymmetric higher-derivative Lagrangian
density for the Yang-Mills field in six spacetime dimensions derived in
arXiv:hep-th/0505082; by dimensional reduction we obtain the N=1 and N=2
supersymmetric higher-derivative super-Yang-Mills Lagrangian in four spacetime
dimensions, whose beta function we evaluate using heat kernels. We also deduce
the beta function for N=4 supersymmetry.
| [{'version': 'v1', 'created': 'Sun, 22 Oct 2017 21:57:26 GMT'}
{'version': 'v2', 'created': 'Fri, 10 Nov 2017 18:29:03 GMT'}] | 2017-11-13 | [array(['Casarin', 'Lorenzo', ''], dtype=object)] |
71 | 0803.1782 | Bill Herbst | William Herbst, Catrina M. Hamilton, Katherine LeDuc, Joshua N. Winn,
Christopher M. Johns-Krull, Reinhard Mundt and Mansur Ibrahimov | Reflected Light from Sand Grains in the Terrestrial Zone of a
Protoplanetary Disk | 22 pages, 5 figures. To be published in Nature, March 13, 2008.
Contains a Supplement | null | 10.1038/nature06671 | null | astro-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We show that grains have grown to ~mm size (sand sized) or larger in the
terrestrial zone (within ~3 AU) of the protoplanetary disk surrounding the 3
Myr old binary star KH 15D. We also argue that the reflected light in the
system reaches us by back scattering off the far side of the same ring whose
near side causes the obscuration.
| [{'version': 'v1', 'created': 'Wed, 12 Mar 2008 18:04:49 GMT'}] | 2009-11-13 | [array(['Herbst', 'William', ''], dtype=object)
array(['Hamilton', 'Catrina M.', ''], dtype=object)
array(['LeDuc', 'Katherine', ''], dtype=object)
array(['Winn', 'Joshua N.', ''], dtype=object)
array(['Johns-Krull', 'Christopher M.', ''], dtype=object)
array(['Mundt', 'Reinhard', ''], dtype=object)
array(['Ibrahimov', 'Mansur', ''], dtype=object)] |
72 | 1007.3945 | Goutam Samanta | G. K. Samanta, S. Chaitanya Kumar, Kavita Devi, and M. Ebrahim-Zadeh | Fiber-laser-pumped Ti:sapphire laser | null | null | null | null | physics.optics | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We report the first experimental demonstration of efficient and high-power
operation of a Ti:sapphire laser pumped by a simple, compact, continuous-wave
(cw) fiber-laser-based green source. The pump radiation is obtained by direct
single-pass second-harmonic-generation (SHG) of a 33-W, cw Yb-fiber laser in
30-mm-long MgO:sPPLT crystal, providing 11 W of single-frequency green power at
532 nm in TEM00 spatial profile with power and frequency stability better than
3.3% and 32 MHz, respectively, over one hour. The Ti:sapphire laser is
continuously tunable across 743-970 nm and can deliver an output power up to
2.7 W with a slope efficiency as high as 32.8% under optimum output coupling of
20%. The laser output has a TEM00 spatial profile with M2<1.44 across the
tuning range and exhibits a peak-to-peak power fluctuation below 5.1% over 1
hour.
| [{'version': 'v1', 'created': 'Thu, 22 Jul 2010 17:15:53 GMT'}] | 2010-07-23 | [array(['Samanta', 'G. K.', ''], dtype=object)
array(['Kumar', 'S. Chaitanya', ''], dtype=object)
array(['Devi', 'Kavita', ''], dtype=object)
array(['Ebrahim-Zadeh', 'M.', ''], dtype=object)] |
73 | 1705.07653 | Jakub Gizbert-Studnicki | Jan Ambj{\o}rn, Jakub Gizbert-Studnicki, Andrzej G\"orlich, Kevin
Grosvenor and Jerzy Jurkiewicz | Four-dimensional CDT with toroidal topology | 28 pages, 15 figures | null | 10.1016/j.nuclphysb.2017.06.026 | null | hep-th gr-qc hep-lat | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | 3+1 dimensional Causal Dynamical Triangulations (CDT) describe a quantum
theory of fluctuating geometries without the introduction of a background
geometry. If the topology of space is constrained to be that of a
three-dimensional torus we show that the system will fluctuate around a
dynamically formed background geometry which can be understood from a simple
minisuperspace action which contains both a classical part and a quantum part.
We determine this action by integrating out degrees of freedom in the full
model, as well as by transfer matrix methods.
| [{'version': 'v1', 'created': 'Mon, 22 May 2017 10:40:07 GMT'}] | 2017-09-13 | [array(['Ambjørn', 'Jan', ''], dtype=object)
array(['Gizbert-Studnicki', 'Jakub', ''], dtype=object)
array(['Görlich', 'Andrzej', ''], dtype=object)
array(['Grosvenor', 'Kevin', ''], dtype=object)
array(['Jurkiewicz', 'Jerzy', ''], dtype=object)] |
74 | 0705.0384 | David Blaschke | D. Blaschke, M. Buballa, A.E. Radzhabov, M.K. Volkov | Effects of mesonic correlations in the QCD phase transition | 11 pages, 4 figures; version accepted for publication in Yad. Fiz.,
text extended, 1 figure added | Yad.Fiz.71:2012-2018,2008; Phys.Atom.Nucl.71:1981-1987,2008 | 10.1134/S1063778808110161 | null | hep-ph nucl-th | null | The finite temperature phase transition of strongly interacting matter is
studied within a nonlocal chiral quark model of the NJL type coupled to a
Polyakov loop. In contrast to previous investigations which were restricted to
the mean-field approximation, mesonic correlations are included by evaluating
the quark-antiquark ring sum. For physical pion masses, we find that the pions
dominate the pressure below the phase transition, whereas above T_c the
pressure is well described by the mean-field approximation result. For large
pion masses, as realized in lattice simulations, the meson effects are
suppressed.
| [{'version': 'v1', 'created': 'Thu, 3 May 2007 19:13:39 GMT'}
{'version': 'v2', 'created': 'Fri, 11 May 2007 14:54:41 GMT'}
{'version': 'v3', 'created': 'Fri, 14 Mar 2008 11:34:49 GMT'}] | 2008-12-18 | [array(['Blaschke', 'D.', ''], dtype=object)
array(['Buballa', 'M.', ''], dtype=object)
array(['Radzhabov', 'A. E.', ''], dtype=object)
array(['Volkov', 'M. K.', ''], dtype=object)] |
75 | 1004.0429 | Enno Veerman | Peter Spreij, Enno Veerman | Affine diffusions with non-canonical state space | 36 pages; paper is split into two papers; results on invariance and
strong solutions added | null | null | null | math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Multidimensional affine diffusions have been studied in detail for the case
of a canonical state space. We present results for general state spaces and
provide a complete characterization of all possible affine diffusions with
polyhedral and quadratic state space. We give necessary and sufficient
conditions on the behavior of drift and diffusion on the boundary of the state
space in order to obtain invariance and to prove strong existence and
uniqueness.
| [{'version': 'v1', 'created': 'Sat, 3 Apr 2010 09:39:52 GMT'}
{'version': 'v2', 'created': 'Thu, 6 May 2010 22:35:14 GMT'}] | 2010-05-10 | [array(['Spreij', 'Peter', ''], dtype=object)
array(['Veerman', 'Enno', ''], dtype=object)] |
76 | 1909.12460 | Mohit Sharma | Kevin Zhang, Mohit Sharma, Manuela Veloso, and Oliver Kroemer | Leveraging Multimodal Haptic Sensory Data for Robust Cutting | Accepted as conference paper at Humanoids'19 | null | null | null | cs.RO cs.CV cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cutting is a common form of manipulation when working with divisible objects
such as food, rope, or clay. Cooking in particular relies heavily on cutting to
divide food items into desired shapes. However, cutting food is a challenging
task due to the wide range of material properties exhibited by food items. Due
to this variability, the same cutting motions cannot be used for all food
items. Sensations from contact events, e.g., when placing the knife on the food
item, will also vary depending on the material properties, and the robot will
need to adapt accordingly. In this paper, we propose using vibrations and
force-torque feedback from the interactions to adapt the slicing motions and
monitor for contact events. The robot learns neural networks for performing
each of these tasks and generalizing across different material properties. By
adapting and monitoring the skill executions, the robot is able to reliably cut
through more than 20 different types of food items and even detect whether
certain food items are fresh or old.
| [{'version': 'v1', 'created': 'Fri, 27 Sep 2019 01:54:17 GMT'}] | 2019-09-30 | [array(['Zhang', 'Kevin', ''], dtype=object)
array(['Sharma', 'Mohit', ''], dtype=object)
array(['Veloso', 'Manuela', ''], dtype=object)
array(['Kroemer', 'Oliver', ''], dtype=object)] |
77 | 1406.2785 | Chulong Liang | Chulong Liang, Jingnan Hu, Xiao Ma, Baoming Bai | A New Class of Multiple-rate Codes Based on Block Markov Superposition
Transmission | null | null | null | null | cs.IT math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Hadamard transform~(HT) as over the binary field provides a natural way to
implement multiple-rate codes~(referred to as {\em HT-coset codes}), where the
code length $N=2^p$ is fixed but the code dimension $K$ can be varied from $1$
to $N-1$ by adjusting the set of frozen bits. The HT-coset codes, including
Reed-Muller~(RM) codes and polar codes as typical examples, can share a pair of
encoder and decoder with implementation complexity of order $O(N \log N)$.
However, to guarantee that all codes with designated rates perform well,
HT-coset coding usually requires a sufficiently large code length, which in
turn causes difficulties in the determination of which bits are better for
being frozen. In this paper, we propose to transmit short HT-coset codes in the
so-called block Markov superposition transmission~(BMST) manner. At the
transmitter, signals are spatially coupled via superposition, resulting in long
codes. At the receiver, these coupled signals are recovered by a sliding-window
iterative soft successive cancellation decoding algorithm. Most importantly,
the performance around or below the bit-error-rate~(BER) of $10^{-5}$ can be
predicted by a simple genie-aided lower bound. Both these bounds and simulation
results show that the BMST of short HT-coset codes performs well~(within one dB
away from the corresponding Shannon limits) in a wide range of code rates.
| [{'version': 'v1', 'created': 'Wed, 11 Jun 2014 05:57:59 GMT'}] | 2014-06-12 | [array(['Liang', 'Chulong', ''], dtype=object)
array(['Hu', 'Jingnan', ''], dtype=object)
array(['Ma', 'Xiao', ''], dtype=object)
array(['Bai', 'Baoming', ''], dtype=object)] |
78 | 1604.00418 | Andrei Belitsky | A.V. Belitsky | Supersymmetric quantum mechanics of the flux tube | 43 pages, 8 figures | null | 10.1016/j.nuclphysb.2016.10.002 | null | hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The Operator Product Expansion approach to scattering amplitudes in maximally
supersymmetric gauge theory operates in terms of pentagon transitions for
excitations propagating on a color flux tube. These obey a set of axioms which
allow one to determine them to all orders in 't Hooft coupling and confront
against explicit calculations. One of the simplifying features of the formalism
is the factorizability of multiparticle transitions in terms of single-particle
ones. In this paper we extend an earlier consideration of a sector populated by
one kind of excitations to the case of a system with fermionic as well as
bosonic degrees of freedom to address the origin of the factorization. While
the purely bosonic case was analyzed within an integrable noncompact open-spin
chain model, the current case is solved in the framework of a supersymmetric
sl(2|1) magnet. We find the eigenfunctions for the multiparticle system making
use of the R-matrix approach. Constructing resulting pentagon transitions, we
prove their factorized form. The discussion corresponds to leading order of
perturbation theory.
| [{'version': 'v1', 'created': 'Fri, 1 Apr 2016 21:58:43 GMT'}
{'version': 'v2', 'created': 'Sat, 21 May 2016 20:53:35 GMT'}] | 2016-12-21 | [array(['Belitsky', 'A. V.', ''], dtype=object)] |
79 | 2001.08991 | Jayanta Dey | Jayanta Dey, Sabyasachi Ghosh, Chowdhury Aminul Islam | Causal aspects of effective QCD models | Conference proceeding in 64th DAE-BRNS Symposium on Nuclear Physics,
Link- http://sympnp.org/snp2019/ | null | null | null | hep-ph nucl-th | http://creativecommons.org/licenses/by/4.0/ | Here we studied the possible diffusion speed for relativistic fluid in
different effective quantum chromodynamics models: Nambu-Jona-Lasinio (NJL),
Polyakov loop extended NJL, entangled PNJL (EPNJL) model.
| [{'version': 'v1', 'created': 'Tue, 14 Jan 2020 10:08:19 GMT'}
{'version': 'v2', 'created': 'Mon, 22 Feb 2021 11:31:23 GMT'}] | 2021-02-23 | [array(['Dey', 'Jayanta', ''], dtype=object)
array(['Ghosh', 'Sabyasachi', ''], dtype=object)
array(['Islam', 'Chowdhury Aminul', ''], dtype=object)] |
80 | 1512.01742 | Ling-Yun He | Sheng Yang, Ling-Yun He | Oil price shocks, road transport pollution emissions and residents'
health losses in China | null | null | 10.1016/j.trd.2015.10.019 | null | q-fin.GN q-fin.EC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | China's rapid economic growth resulted in serious air pollution, which caused
substantial losses to economic development and residents' health. In
particular, the road transport sector has been blamed to be one of the major
emitters. During the past decades, fluctuation in the international oil prices
has imposed significant impacts on the China's road transport sector.
Therefore, we propose an assumption that China's provincial economies are
independent "economic entities". Based on this assumption, we investigate the
China's road transport fuel (i.e., gasoline and diesel) demand system by using
the panel data of all 31 Chinese provinces except Hong Kong, Macau and Taiwan.
To connect the fuel demand system and the air pollution emissions, we propose
the concept of pollution emissions elasticities to estimate the air pollution
emissions from the road transport sector, and residents' health losses by a
simplified approach consisting of air pollution concentrations and health loss
assessment models under different scenarios based on real-world oil price
fluctuations. Our framework, to the best of our knowledge, is the first attempt
to address the transmission mechanism between the fuel demand system in road
transport sector and residents' health losses in the transitional China.
| [{'version': 'v1', 'created': 'Sun, 6 Dec 2015 05:39:22 GMT'}] | 2015-12-08 | [array(['Yang', 'Sheng', ''], dtype=object)
array(['He', 'Ling-Yun', ''], dtype=object)] |
81 | 2306.10013 | Yuqi Wang | Yuqi Wang, Yuntao Chen, Xingyu Liao, Lue Fan and Zhaoxiang Zhang | PanoOcc: Unified Occupancy Representation for Camera-based 3D Panoptic
Segmentation | technical report | null | null | null | cs.CV cs.RO | http://creativecommons.org/licenses/by/4.0/ | Comprehensive modeling of the surrounding 3D world is key to the success of
autonomous driving. However, existing perception tasks like object detection,
road structure segmentation, depth & elevation estimation, and open-set object
localization each only focus on a small facet of the holistic 3D scene
understanding task. This divide-and-conquer strategy simplifies the algorithm
development procedure at the cost of losing an end-to-end unified solution to
the problem. In this work, we address this limitation by studying camera-based
3D panoptic segmentation, aiming to achieve a unified occupancy representation
for camera-only 3D scene understanding. To achieve this, we introduce a novel
method called PanoOcc, which utilizes voxel queries to aggregate spatiotemporal
information from multi-frame and multi-view images in a coarse-to-fine scheme,
integrating feature learning and scene representation into a unified occupancy
representation. We have conducted extensive ablation studies to verify the
effectiveness and efficiency of the proposed method. Our approach achieves new
state-of-the-art results for camera-based semantic segmentation and panoptic
segmentation on the nuScenes dataset. Furthermore, our method can be easily
extended to dense occupancy prediction and has shown promising performance on
the Occ3D benchmark. The code will be released at
https://github.com/Robertwyq/PanoOcc.
| [{'version': 'v1', 'created': 'Fri, 16 Jun 2023 17:59:33 GMT'}] | 2023-06-19 | [array(['Wang', 'Yuqi', ''], dtype=object)
array(['Chen', 'Yuntao', ''], dtype=object)
array(['Liao', 'Xingyu', ''], dtype=object)
array(['Fan', 'Lue', ''], dtype=object)
array(['Zhang', 'Zhaoxiang', ''], dtype=object)] |
82 | 1305.4419 | Amitav Mukherjee | Amitav Mukherjee | Imbalanced Beamforming by a Multi-antenna Source for Secure Utilization
of an Untrusted Relay | To appear, IEEE Communications Letters, 2013 | null | 10.1109/LCOMM.2013.052413.130649 | null | cs.IT math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate a relay network where a multiantenna source can potentially
utilize an unauthenticated (untrusted) relay to augment its direct transmission
of a confidential message to the destination. Since the relay is untrusted, it
is desirable to protect the confidential data from it while simultaneously
making use of it to increase the reliability of the transmission. We present a
low-complexity scheme denoted as imbalanced beamforming based on linear
beamforming and constellation mapping that ensures perfect physical-layer
security even while utilizing the untrusted relay. Furthermore, the security of
the scheme holds even if the relay adopts the conventional decodeand- forward
protocol, unlike prior work. Simulation results show that the proposed
imbalanced signaling maintains a constant BER of 0.5 at the eavesdropper at any
SNR and number of source antennas, while maintaining or improving the detection
performance of the destination compared to not utilizing the relay or existing
security methods.
| [{'version': 'v1', 'created': 'Mon, 20 May 2013 00:23:58 GMT'}] | 2016-11-17 | [array(['Mukherjee', 'Amitav', ''], dtype=object)] |
83 | 1707.02279 | Ruggero Lanotte Dr | Ruggero Lanotte and Massimo Merro and Simone Tini | A Probabilistic Calculus of Cyber-Physical Systems | arXiv admin note: text overlap with arXiv:1612.00484 | null | null | null | cs.LO cs.FL cs.SY eess.SY | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We propose a hybrid probabilistic process calculus for modelling and
reasoning on cyber-physical systems (CPSs). The dynamics of the calculus is
expressed in terms of a probabilistic labelled transition system in the SOS
style of Plotkin. This is used to define a bisimulation-based probabilistic
behavioural semantics which supports compositional reasonings. For a more
careful comparison between CPSs, we provide two compositional probabilistic
metrics to formalise the notion of behavioural distance between systems, also
in the case of bounded computations. Finally, we provide a non-trivial case
study, taken from an engineering application, and use it to illustrate our
definitions and our compositional behavioural theory for CPSs.
| [{'version': 'v1', 'created': 'Fri, 7 Jul 2017 17:31:33 GMT'}
{'version': 'v2', 'created': 'Tue, 30 Jan 2018 20:09:19 GMT'}
{'version': 'v3', 'created': 'Thu, 1 Feb 2018 17:03:19 GMT'}
{'version': 'v4', 'created': 'Mon, 27 Apr 2020 09:39:41 GMT'}] | 2021-05-25 | [array(['Lanotte', 'Ruggero', ''], dtype=object)
array(['Merro', 'Massimo', ''], dtype=object)
array(['Tini', 'Simone', ''], dtype=object)] |
84 | 1901.08359 | Javier Pena | David H. Gutman and Javier F. Pena | The condition number of a function relative to a set | 40 pages, 4 figures. To Appear in Mathematical Programming | null | null | null | math.OC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The condition number of a differentiable convex function, namely the ratio of
its smoothness to strong convexity constants, is closely tied to fundamental
properties of the function. In particular, the condition number of a quadratic
convex function is the square of the aspect ratio of a canonical ellipsoid
associated to the function. Furthermore, the condition number of a function
bounds the linear rate of convergence of the gradient descent algorithm for
unconstrained convex minimization.
We propose a condition number of a differentiable convex function relative to
a reference convex set and distance function pair. This relative condition
number is defined as the ratio of a relative smoothness to a relative strong
convexity constants. We show that the relative condition number extends the
main properties of the traditional condition number both in terms of its
geometric insight and in terms of its role in characterizing the linear
convergence of first-order methods for constrained convex minimization.
When the reference set $X$ is a convex cone or a polyhedron and the function
$f$ is of the form $f = g\circ A$, we provide characterizations of and bounds
on the condition number of $f$ relative to $X$ in terms of the usual condition
number of $g$ and a suitable condition number of the pair $(A,X)$.
| [{'version': 'v1', 'created': 'Thu, 24 Jan 2019 11:28:49 GMT'}
{'version': 'v2', 'created': 'Thu, 5 Dec 2019 15:04:33 GMT'}
{'version': 'v3', 'created': 'Thu, 23 Jan 2020 13:53:25 GMT'}
{'version': 'v4', 'created': 'Sat, 18 Apr 2020 10:48:33 GMT'}] | 2020-04-21 | [array(['Gutman', 'David H.', ''], dtype=object)
array(['Pena', 'Javier F.', ''], dtype=object)] |
85 | 1703.03912 | Haifeng Xu | Haifeng Xu, Milind Tambe, Shaddin Dughmi, Venil Loyd Noronha | Mitigating the Curse of Correlation in Security Games by Entropy
Maximization | null | null | null | null | cs.GT cs.AI cs.CR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In Stackelberg security games, a defender seeks to randomly allocate limited
security resources to protect critical targets from an attack. In this paper,
we study a fundamental, yet underexplored, phenomenon in security games, which
we term the \emph{Curse of Correlation} (CoC). Specifically, we observe that
there are inevitable correlations among the protection status of different
targets. Such correlation is a crucial concern, especially in
\emph{spatio-temporal} domains like conservation area patrolling, where
attackers can surveil patrollers at certain areas and then infer their
patrolling routes using such correlations. To mitigate this issue, we propose
to design entropy-maximizing defending strategies for spatio-temporal security
games, which frequently suffer from CoC. We prove that the problem is \#P-hard
in general. However, it admits efficient algorithms in well-motivated special
settings. Our experiments show significant advantages of max-entropy algorithms
over previous algorithms. A scalable implementation of our algorithm is
currently under pre-deployment testing for integration into FAMS software to
improve the scheduling of US federal air marshals.
| [{'version': 'v1', 'created': 'Sat, 11 Mar 2017 05:35:09 GMT'}
{'version': 'v2', 'created': 'Wed, 3 Jan 2018 20:09:52 GMT'}] | 2018-01-08 | [array(['Xu', 'Haifeng', ''], dtype=object)
array(['Tambe', 'Milind', ''], dtype=object)
array(['Dughmi', 'Shaddin', ''], dtype=object)
array(['Noronha', 'Venil Loyd', ''], dtype=object)] |
86 | 1503.01177 | Yangfan Hu PhD. | Yangfan Hu | Nature of Spontaneous Curvature in Suspended Graphene | 26 pages (18 main text, 8 supplementary information), 4 figures(3
main text, 1 supplementary information) | null | null | null | cond-mat.mtrl-sci cond-mat.mes-hall cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The nature of its intrinsic ripples is the key factor for understanding the
stability of suspended graphene, and for unraveling the long-standing
theoretical debate of the existence of low-dimensional crystalline state. The
rippling morphology of graphene, discovered also in other 2D materials, has a
profound impact on its electronic, mechanical and chemical properties.
Actually, before the discovery of graphene, rippling phenomena are widely
observed: for example, the roughing transition of crystalline interface, the
rippled phase in biomembrane, and crumpling of flexible sheet polymers modeled
by tethered surfaces. The fascinating truth that ripples exist in so many
different membrane-like materials implies possible existence of a universal
physical mechanism which was unclear. We consider the ripples in suspended
graphene as two parts, characterizing the first part by the spontaneous
curvature k which stabilizes the possible soft ZA modes, and the second part by
the thermal curvature kt which is caused directly by height fluctuation. By
choosing k as the order parameter of the system, we establish the Landau theory
modified by thermal fluctuation for wrinkling transition of large sized
graphene. We find that as temperature rises from 0K, a second order phase
transition occurs at a size dependent critical temperature Tc, which
corresponds to a change of equilibrium configuration from a flat state to a
rippling state. Interestingly, the order parameter is stablized as temperature
increases, and the phase transition is associated with a jump of equilibrium
bond length as well as a vanishing intrinsic bending rigidity. The results
obtained suggest that the interplay between the rippling morphology and the
elementary excitations is vital for understanding the behavior of 2D materials.
The concepts and theory developed here is of general significance at least for
tethered membranes.
| [{'version': 'v1', 'created': 'Wed, 4 Mar 2015 00:54:41 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Apr 2015 23:56:31 GMT'}] | 2015-04-17 | [array(['Hu', 'Yangfan', ''], dtype=object)] |
87 | 1411.7503 | Elisabete Barreiro | Helena Albuquerque, Elisabete Barreiro and Jos\'e M. S\'anchez-Delgado | Quasicrossed product on G-graded quasialgebras | null | null | null | null | math.RA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The notion of quasicrossed product is introduced in the setting of G-graded
quasialgebras, i.e., algebras endowed with a grading by a group G, satisfying a
"quasiassociative" law. The equivalence between quasicrossed products and
quasicrossed systems is explored. It is presented the notion of
graded-bimodules in order to study simple quasicrossed products. Deformed group
algebras are stressed in particular.
| [{'version': 'v1', 'created': 'Thu, 27 Nov 2014 09:03:41 GMT'}] | 2014-12-01 | [array(['Albuquerque', 'Helena', ''], dtype=object)
array(['Barreiro', 'Elisabete', ''], dtype=object)
array(['Sánchez-Delgado', 'José M.', ''], dtype=object)] |
88 | 1002.3860 | Aqeel Ahmed | Ishtiaq Ahmed, M. Ali Paracha, M. Jamil Aslam | Model Independent Analysis of the Forward-Backward Asymmetry for the
$B\to K_{1}\mu^{+}\mu^{-}$ Decay | 14 pages, 8 figures, Published version that appears in EPJC | Eur.Phys.J.C71:1521,2011 | 10.1140/epjc/s10052-010-1521-1 | null | hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The sensitivity of the zero position of the forward backward asymmetry
$\mathcal{A}_{FB}$ for the exclusive $B\rightarrow K_{1}(1270)\mu^{+}\mu^{-}$
decay is examined by using most general non-standard 4-fermion interactions.
Our analysis shows that the zero position of the forward backward asymmetry is
very sensitive to the sign and size of the Wilson coefficients corresponding to
the new vector type interactions, which are the counter partners of the usual
Standard Model operators but have opposite chirality. In addition to these, the
other significant effect comes from the interference of Scalar-Pseudoscalar and
Tensor type operators. These results will not only enhance our theoretical
understanding about the axial vector mesons but will also serve as a good tool
to look for physics beyond the SM.
| [{'version': 'v1', 'created': 'Sat, 20 Feb 2010 09:33:54 GMT'}
{'version': 'v2', 'created': 'Tue, 11 Jan 2011 12:38:22 GMT'}] | 2011-03-28 | [array(['Ahmed', 'Ishtiaq', ''], dtype=object)
array(['Paracha', 'M. Ali', ''], dtype=object)
array(['Aslam', 'M. Jamil', ''], dtype=object)] |
89 | 1508.04752 | Andre Van Hoorn | Andreas Brunnert, Andre van Hoorn, Felix Willnecker, Alexandru Danciu,
Wilhelm Hasselbring, Christoph Heger, Nikolas Herbst, Pooyan Jamshidi, Reiner
Jung, Joakim von Kistowski, Anne Koziolek, Johannes Kro{\ss}, Simon Spinner,
Christian V\"ogele, J\"urgen Walter, Alexander Wert | Performance-oriented DevOps: A Research Agenda | null | null | null | SPEC-RG-2015-01 | cs.SE cs.PF | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | DevOps is a trend towards a tighter integration between development (Dev) and
operations (Ops) teams. The need for such an integration is driven by the
requirement to continuously adapt enterprise applications (EAs) to changes in
the business environment. As of today, DevOps concepts have been primarily
introduced to ensure a constant flow of features and bug fixes into new
releases from a functional perspective. In order to integrate a non-functional
perspective into these DevOps concepts this report focuses on tools,
activities, and processes to ensure one of the most important quality
attributes of a software system, namely performance.
Performance describes system properties concerning its timeliness and use of
resources. Common metrics are response time, throughput, and resource
utilization. Performance goals for EAs are typically defined by setting upper
and/or lower bounds for these metrics and specific business transactions. In
order to ensure that such performance goals can be met, several activities are
required during development and operation of these systems as well as during
the transition from Dev to Ops. Activities during development are typically
summarized by the term Software Performance Engineering (SPE), whereas
activities during operations are called Application Performance Management
(APM). SPE and APM were historically tackled independently from each other, but
the newly emerging DevOps concepts require and enable a tighter integration
between both activity streams. This report presents existing solutions to
support this integration as well as open research challenges in this area.
| [{'version': 'v1', 'created': 'Tue, 18 Aug 2015 12:39:05 GMT'}] | 2015-08-20 | [array(['Brunnert', 'Andreas', ''], dtype=object)
array(['van Hoorn', 'Andre', ''], dtype=object)
array(['Willnecker', 'Felix', ''], dtype=object)
array(['Danciu', 'Alexandru', ''], dtype=object)
array(['Hasselbring', 'Wilhelm', ''], dtype=object)
array(['Heger', 'Christoph', ''], dtype=object)
array(['Herbst', 'Nikolas', ''], dtype=object)
array(['Jamshidi', 'Pooyan', ''], dtype=object)
array(['Jung', 'Reiner', ''], dtype=object)
array(['von Kistowski', 'Joakim', ''], dtype=object)
array(['Koziolek', 'Anne', ''], dtype=object)
array(['Kroß', 'Johannes', ''], dtype=object)
array(['Spinner', 'Simon', ''], dtype=object)
array(['Vögele', 'Christian', ''], dtype=object)
array(['Walter', 'Jürgen', ''], dtype=object)
array(['Wert', 'Alexander', ''], dtype=object)] |
90 | 1803.01821 | Mohsen Shadmehri | Asiyeh Yaghoobi, Mohsen Shadmehri | Magnetic Rayleigh-Taylor Instability in Radiative Flows | 10 pages, 6 figures, Accepted for publication in MNRAS | null | 10.1093/mnras/sty623 | null | astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a linear analysis of the radiative Rayleigh-Taylor (RT)
instability in the presence of magnetic field for both optically thin and thick
regimes. When the flow is optically thin, magnetic field not only stabilizes
perturbations with short wavelengths, but also growth rate of the instability
at long wavelengths is reduced compared to a nonmagnetized case. Then, we
extend our analysis to the optically thick flows with a conserved total
specific entropy and properties of the unstable perturbations are investigated
in detail. Growth rate of the instability at short wavelengths is suppressed
due to the presence of the magnetic field, however, growth rate is nearly
constant at long wavelengths because of the radiation field. Since the
radiative bubbles around massive protostars are subject to the RT instability,
we also explore implications of our results in this context. In the
nonmagnetized case, the growth time-scale of the instability for a typical
bubble is found less than one thousand years which is very short compared to
the typical star formation time-scale. Magnetic field with a reasonable
strength significantly increases the growth time-scale to more than hundreds of
thousands years. The instability, furthermore, is more efficient at large
wavelengths, whereas in the non-magnetized case, growth rate at short
wavelengths is more significant.
| [{'version': 'v1', 'created': 'Mon, 5 Mar 2018 18:30:30 GMT'}] | 2018-03-28 | [array(['Yaghoobi', 'Asiyeh', ''], dtype=object)
array(['Shadmehri', 'Mohsen', ''], dtype=object)] |
91 | 1707.05546 | Mohamed Aslan A. | Mohamed Aslan and Ashraf Matrawy | Could Network View Inconsistency Affect Virtualized Network Security
Functions? | null | null | null | null | cs.NI cs.CR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | With SDN increasingly becoming an enabling technology for NFV in the cloud,
many virtualized network functions need to monitor the network state in order
to function properly. An outdated network view at the controllers can impact
the performance of those virtualized network functions. In earlier work, we
identified two main factors contributing to an outdated network view in the
case of a load-balancer: network state collection and controllers' state
distribution. In this paper, we anticipate that the impact might be different
in case of security functions. Therefore, we study the impact of an outdated
network view on an anomaly-based IDS application. In particular, we
investigate: (1) the impact of controllers' state distribution on the
performance of a distributed IDS in the case of a DDoS attack; and (2) the
impact of network state collection on the performance of an IDS in the case of
a TCP SYN flood attack. Our results showed that the outdated network view had
negative impact on the IDS anomaly-detection performance in the experiments
that we conducted.
| [{'version': 'v1', 'created': 'Tue, 18 Jul 2017 09:58:42 GMT'}] | 2017-07-19 | [array(['Aslan', 'Mohamed', ''], dtype=object)
array(['Matrawy', 'Ashraf', ''], dtype=object)] |
92 | 0810.2894 | Frank Peters | E. A. J. F. Peters | Projection-operator formalism and coarse-graining | Content significantly updated compared to first version | null | null | null | cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | A careful derivation of the generalized Langevin equation using "Zwanzig
flavor" projection operator formalism is presented. We provide arguments why
this formalism has better properties compared to alternative
projection-operator formalisms for deriving non-equilibrium,
non-thermodynamic-limit, equations. The two main ingredients in the derivation
are Liouville's theorem and optimal prediction theory.
As a result we find that equations for non-equilibrium thermodynamics are
dictated by the formalism once the choice of coarse-grained variables is made.
This includes a microcanonical entropy definition dependent on the
coarse-grained variables. Based on this framework we provide a methodology for
succesive coarse-graining. As two special cases, the case of linear
coefficients and coarse-graining in the thermodynamic limit are treated in
detail. In the linear limit the formulas found are equivalent with those of
homogenization theory.
In this framework there are no restrictions with respect to the
thermodynamic-limit or nearness to equilibrium. We believe the presented
approach is very suitable for the development of computational methods by means
of coarse-graining from a more detailed level of description.
| [{'version': 'v1', 'created': 'Thu, 16 Oct 2008 12:18:42 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Dec 2008 14:04:59 GMT'}] | 2008-12-02 | [array(['Peters', 'E. A. J. F.', ''], dtype=object)] |
93 | 1509.00088 | Christoph Simon | Stephen Wein, Khabat Heshami, Christopher A. Fuchs, Hari Krovi,
Zachary Dutton, Wolfgang Tittel, Christoph Simon | Efficiency of an enhanced linear optical Bell-state measurement scheme
with realistic imperfections | 14 pages, 5 figures, version accepted by PRA | Phys. Rev. A 94, 032332 (2016) | 10.1103/PhysRevA.94.032332 | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We compare the standard 50%-efficient single beam splitter method for
Bell-state measurement to a proposed 75%-efficient auxiliary-photon-enhanced
scheme [W. P. Grice, Phys. Rev. A 84, 042331 (2011)] in light of realistic
conditions. The two schemes are compared with consideration for high input
state photon loss, auxiliary state photon loss, detector inefficiency and
coupling loss, detector dark counts, and non-number-resolving detectors. We
also analyze the two schemes when multiplexed arrays of non-number-resolving
detectors are used. Furthermore, we explore the possibility of utilizing
spontaneous parametric down-conversion as the auxiliary photon pair source
required by the enhanced scheme. In these different cases, we determine the
bounds on the detector parameters at which the enhanced scheme becomes superior
to the standard scheme and describe the impact of the different imperfections
on measurement success rate and discrimination fidelity. This is done using a
combination of numeric and analytic techniques. For many of the cases
discussed, the size of the Hilbert space and the number of measurement outcomes
can be very large, which makes direct numerical solutions computationally
costly. To alleviate this problem, all of our numerical computations are
performed using pure states. This requires tracking the loss modes until
measurement and treating dark counts as variations on measurement outcomes
rather than modifications to the state itself. In addition, we provide
approximate analytic expressions that illustrate the effect of different
imperfections on the Bell-state analyzer quality.
| [{'version': 'v1', 'created': 'Mon, 31 Aug 2015 22:25:42 GMT'}
{'version': 'v2', 'created': 'Thu, 22 Sep 2016 19:31:10 GMT'}] | 2016-11-03 | [array(['Wein', 'Stephen', ''], dtype=object)
array(['Heshami', 'Khabat', ''], dtype=object)
array(['Fuchs', 'Christopher A.', ''], dtype=object)
array(['Krovi', 'Hari', ''], dtype=object)
array(['Dutton', 'Zachary', ''], dtype=object)
array(['Tittel', 'Wolfgang', ''], dtype=object)
array(['Simon', 'Christoph', ''], dtype=object)] |
94 | hep-ph/9605324 | null | Edmond L. Berger (Argonne), Xiaofeng Guo, and Jianwei Qiu (Iowa State) | Isolated Prompt Photon Production in Hadronic Final States of $e^+e^-$
Annihilation | 54 pages RevTeX plus 19 postscript figures submitted together in one
compressed file | Phys.Rev. D54 (1996) 5470-5495 | 10.1103/PhysRevD.54.5470 | ANL-HEP-PR-96-37 | hep-ph | null | We provide complete analytic expressions for the isolated prompt photon
production cross section in $e^+e^-$ annihilation reactions through one-loop
order in quantum chromodynamics (QCD) perturbation theory. Functional
dependences on the isolation cone size $\delta$ and isolation energy parameter
$\epsilon$ are derived. The energy dependence as well as the full angular
dependence of the cross section on $\theta_\gamma$ are displayed, where
$\theta_\gamma$ specifies the direction of the photon with respect to the
$e^+e^-$ collision axis. We point out that conventional perturbative QCD
factorization breaks down for isolated photon production in $e^+e^-$
annihilation reactions in a specific region of phase space. We discuss the
implications of this breakdown for the extraction of fragmentation functions
from $e^+e^-$ annihilation data and for computations of prompt photon
production in hadron-hadron reactions.
| [{'version': 'v1', 'created': 'Wed, 15 May 1996 22:31:59 GMT'}] | 2009-10-28 | [array(['Berger', 'Edmond L.', '', 'Argonne'], dtype=object)
array(['Guo', 'Xiaofeng', '', 'Iowa State'], dtype=object)
array(['Qiu', 'Jianwei', '', 'Iowa State'], dtype=object)] |
95 | 1503.06585 | Xueran Wu | Xueran Wu, Hendrik Elbern and Birgit Jacob | Efficiency and Sensitivity Analysis of Observation Networks for
Atmospheric Inverse Modelling with Emissions | 30 pages, 10 figures, 5 tables | null | null | null | physics.ao-ph math.DS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The controllability of advection-diffusion systems, subject to uncertain
initial values and emission rates, is estimated, given sparse and error
affected observations of prognostic state variables. In predictive geophysical
model systems, like atmospheric chemistry simulations, different parameter
families influence the temporal evolution of the system.This renders
initial-value-only optimisation by traditional data assimilation methods as
insufficient. In this paper, a quantitative assessment method on validation of
measurement configurations to optimize initial values and emission rates, and
how to balance them, is introduced. In this theoretical approach, Kalman filter
and smoother and their ensemble based versions are combined with a singular
value decomposition, to evaluate the potential improvement associated with
specific observational network configurations. Further, with the same singular
vector analysis for the efficiency of observations, their sensitivity to model
control can be identified by determining the direction and strength of maximum
perturbation in a finite-time interval.
| [{'version': 'v1', 'created': 'Mon, 23 Mar 2015 10:20:20 GMT'}] | 2015-03-24 | [array(['Wu', 'Xueran', ''], dtype=object)
array(['Elbern', 'Hendrik', ''], dtype=object)
array(['Jacob', 'Birgit', ''], dtype=object)] |
96 | hep-ph/0112272 | Fedor Simkovic | Fedor Simkovic, Amand Faessler | Distinguishing the neutrinoless double beta decay mechanisms | 9 pages, 2 figures, Talk at the School `Neutrinos in Astro, Particle
and Nuclear Physics', Erice, September 18-26, 2001,to appear in
Prog.Part.Nucl.Phys. 48 (2002) | Prog.Part.Nucl.Phys. 48 (2002) 201-209 | 10.1016/S0146-6410(02)00125-4 | null | hep-ph | null | Many new neutrinoless double beta decay (0nbb) experiments are planned or in
preparation. If the 0nbb-decay will be detected, the key issue will be what is
the dominant mechanism of this process. By measuring only transitions to the
ground state one can not distinguish among many of the 0nbb-decay mechanisms
(the light and heavy Majorana neutrino exchange mechanisms, the trilinear
R-parity breaking mechanisms etc.). We show that if the ratio of the 0nbb-decay
half-lifes for transitions to the 0^+ first excited and ground states is
determined both theoretically and experimentally, it might be possible to
determine, which 0nbb-decay mechanisms is dominant. For that purpose the
corresponding nuclear matrix elements have to be evaluated with high
reliability. The present work is giving strong motivations for experimental
studies of the 0nbb-decay transitions to the first excited 0^+ states of the
final nuclei.
| [{'version': 'v1', 'created': 'Thu, 20 Dec 2001 11:18:26 GMT'}] | 2009-11-07 | [array(['Simkovic', 'Fedor', ''], dtype=object)
array(['Faessler', 'Amand', ''], dtype=object)] |
97 | 1910.04998 | No\'emie Jaquier | No\'emie Jaquier, Leonel Rozo, Sylvain Calinon, Mathias B\"urger | Bayesian Optimization Meets Riemannian Manifolds in Robot Learning | Accepted in CoRL'19, 14 pages, 9 figures, 5 tables, 7 appendices | null | null | null | cs.RO cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Bayesian optimization (BO) recently became popular in robotics to optimize
control parameters and parametric policies in direct reinforcement learning due
to its data efficiency and gradient-free approach. However, its performance may
be seriously compromised when the parameter space is high-dimensional. A way to
tackle this problem is to introduce domain knowledge into the BO framework. We
propose to exploit the geometry of non-Euclidean parameter spaces, which often
arise in robotics (e.g. orientation, stiffness matrix). Our approach, built on
Riemannian manifold theory, allows BO to properly measure similarities in the
parameter space through geometry-aware kernel functions and to optimize the
acquisition function on the manifold as an unconstrained problem. We test our
approach in several benchmark artificial landscapes and using a 7-DOF simulated
robot to learn orientation and impedance parameters for manipulation skills.
| [{'version': 'v1', 'created': 'Fri, 11 Oct 2019 07:13:45 GMT'}] | 2019-10-14 | [array(['Jaquier', 'Noémie', ''], dtype=object)
array(['Rozo', 'Leonel', ''], dtype=object)
array(['Calinon', 'Sylvain', ''], dtype=object)
array(['Bürger', 'Mathias', ''], dtype=object)] |
98 | 1702.04914 | Daniel M. Dantchev | Galin Valchev and Daniel Dantchev | Sign change in the net force in sphere-plate and sphere-sphere systems
immersed in nonpolar critical fluid due to the interplay between the critical
Casimir and dispersion van der Waals forces | 22 pages, 7 figures, some misprints are corrected. arXiv admin note:
text overlap with arXiv:1506.03272 | Phys. Rev. E 96, 022107 (2017) | 10.1103/PhysRevE.96.022107 | null | cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study systems in which both long-ranged van der Waals and critical Casimir
interactions are present. We study the interplay between these forces, as well
as the {\it total} force (TF) between a spherical colloid particle and a thick
planar slab, and between two spherical colloid particles. We do that using
general scaling arguments and mean-field type calculations utilizing the
Derjaguin and the surface integration approaches. They both are based on data
of the forces between two parallel slabs separated at a distance $L$ from each
other, confining the fluctuating fluid medium characterized by its temperature
$T$ and chemical potential $\mu$. The surfaces of the colloid particles and the
slab are coated by thin layers exerting strong preference to the liquid phase
of the fluid, or one of the components of the mixture, modeled by strong
adsorbing local surface potentials, ensuring the so-called $(+,+)$ boundary
conditions. On the other hand, the core region of the slab and the particles,
influence the fluid by long-ranged competing dispersion potentials. We
demonstrate that for a suitable set of colloids-fluid, slab-fluid, and
fluid-fluid coupling parameters the competition between the effects due to the
coatings and the core regions of the objects involved result, when one changes
$T$, $\mu$ or $L$, in {\it sign change} of the Casimir force (CF) {\it and} the
TF acting between the colloid and the slab, as well as between the colloids.
This can be used for governing the behavior of objects, say colloidal
particles, at small distances, say in colloid suspensions for preventing
flocculation. It can also provide a strategy for solving problems with
handling, feeding, trapping and fixing of microparts in nanotechnology. Data
for specific substances in support of the experimental feasibility of the
theoretically predicted behavior of the CF and TF have been also presented.
| [{'version': 'v1', 'created': 'Thu, 16 Feb 2017 10:22:07 GMT'}
{'version': 'v2', 'created': 'Fri, 17 Feb 2017 09:41:14 GMT'}
{'version': 'v3', 'created': 'Wed, 9 Aug 2017 18:13:30 GMT'}] | 2017-08-11 | [array(['Valchev', 'Galin', ''], dtype=object)
array(['Dantchev', 'Daniel', ''], dtype=object)] |
99 | 2103.07222 | Maxim Azarkin | Maxim Azarkin, Martin Kirakosyan | Performance of Monte Carlo event generators of pp collisions at NICA
energies | 32 pages, 12 figures | null | null | null | hep-ph | http://creativecommons.org/licenses/by/4.0/ | This paper presents an overview of Monte Carlo(MC) event generators for
simulation of proton-proton collisions along with the results on hadron
production at Nuclotron-based Ion Collider fAcility (NICA) energies. Namely,
mean multiplicities, mean transverse momenta, and rapidity distributions of
p($\bar{\rm p}$), $\pi^{\pm}$, $\mathrm{K}^{\pm}$ at different collision
energies are presented. We also study two-particle angular correlations for
stable charged particles. Results of simulations with \pythia, \epos, and
\urqmd event generators are compared to available data. Connections of studied
quantities with physics mechanisms in MC generators are discussed. We suggest a
tuned set of parameters to address observed discrepancies between data and
\pythia.
| [{'version': 'v1', 'created': 'Fri, 12 Mar 2021 11:58:46 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Jul 2021 15:18:02 GMT'}
{'version': 'v3', 'created': 'Mon, 20 Sep 2021 19:22:46 GMT'}
{'version': 'v4', 'created': 'Wed, 21 Sep 2022 08:42:03 GMT'}] | 2022-09-22 | [array(['Azarkin', 'Maxim', ''], dtype=object)
array(['Kirakosyan', 'Martin', ''], dtype=object)] |
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