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A finite-element simulation for the drying process of ceramics is performed. The heat and moisture movements in green ceramics caused by the temperature gradient, moisture gradient, conduction, convection and evaporation are considered. The finite-element formulation for solving the temperature and moisture distributions, which not only change the volume but also induce the hygro-thermal stress, is carried out. Employing the internally discontinuous interface elements, the numerical divergence problem arising from sudden changes in heat capacity in the phase zone is solved. In order to verify the reliability of the formulation, the drying process of a coal and the wetting process of a graphite epoxy are simulated and the results are compared with the analytical solution and another investigator's result. Finally, the drying process of a ceramic electric insulator is simulated.

In the DPST (Direct Prototype Spray Tooling) sprayed directly prototype tooling technology of Huazhong University of Science and Technology , due to brittle characteristics of ceramic materials, there was low efficient in the processing of large mold .The study would obtain sprayed ceramic prototypes through Industrial robots directly milling of ceramic rough technology, However, clay ceramic prototype embryos after milling would occur large shrinkage in the high-temperature drying and consolidation. In the paper it has established a clay material mathematical model of heat and mass transfer in the high-temperature drying process, and carried out finite element simulation in the ABAQUS, obtained shrinkage deformation law of the clay material.

Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.

eng_Latn

Discrete particle element analysis of aggregate interaction in granular mixes for asphalt: combined DEM and experimental study

Incorporation of Rubber Powder as Filler in a New Dry-Hybrid Technology: Rheological and 3D DEM Mastic Performances Evaluation

Path collective variables without paths

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Development of Geopolymer with Coal Fired Boiler Ash

Comparative study on the characteristics of fly ash and bottom ash geopolymers.

Fire-resistant geopolymer produced by granulated blast furnace slag

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ELECTRICALLY CONDUCTIVE CB/PET/PE COMPOSITE PREPARED THROUGH EXTRUSION AND HOT STRETCHING

Based on the previous study of in-situ fibrillation of general engineering plastics/general-purpose plastics, it was attempted to prepare fibrillar carbon black (CB)/poly(ethylene terephthalate) (PET)/polyethylene (PE) composite with electrical conductivity through extrusion and hot stretching. CB and PET were first melted mixed into masterbatch. Then, the mixture of CB/PET masterbatch and PE were extruded and hot stretched. It was found that the melt viscosity of masterbatch can affect the formation of in-situ fibers. As the CB loading is relatively low, the composite has obvious in-situ fibers and hence has correspondingly good conductivity.

Ag-added Y–Ba–Cu–O bulk superconductors were joined using Ag-added Er–Ba–Cu–O solder and different Er211 contents. Microstructural analysis revealed that the volume fraction of Er211 at the joint with a composition of Er123:Er211 = 4:1 was the same as that for the expected volume fraction of the initial composition. That is, this composition seems to be optimum, since the mass balance was maintained during the crystal growth from the initial growth stage to the final stage. The trapped-field distribution for the joint using this composition was uniform and the only single peak indicated that strong coupling was achieved.

yue_Hant

Study on composite resin cores. Part 2. Effect of pressing composite resin

In this study, we investigated effects of pressing in building composite resin cores on compressive strength, retention of prefabricated post and sealing ability. 1. Compressive strength increased by pressing in composite resin cores. 2. Prefabricated post to the retentive forces was not influenced by pressing, but increased when bonding agent was used. 3. Pressing was very effective to improve sealing ability of composite resin to tooth structure. 4. Sealing ability of light-cured composite resin was not influenced by pressing but by curing types of bonding agent.

Abstract The physicochemically derived swelling stress in articular cartilage plays a crucial role in determining the pattern of stress sharing between the exudable fluid and the ‘solid’ components comprising its matrix. This pattern of stress sharing in turn influences the manner in which cartilage consolidates or deforms in compression via the outflow of fluid. Synthetic hydrogels exposed to a variety of cationic blocking solutions provide simplified model systems for exploring quantitatively the influence of the intrinsic swelling parameter on consolidation behaviour, thus yielding further insights into the fundamental parameters controlling the biomechanical properties of complex tissues such as articular cartilage.

eng_Latn

Synthesis of Titanium Pillared Clay Nano Functional Material

Polymer/nano-clay composites have better barrier properties, fire resistance and higher mechanical properties since nano-caly particles were reinforcing the composites on a molecular scale. Titanium pillared clay was made by introducing polymeric titanium oxide cations into the bentonite structure by cation exchange. They were characterized by surface area, small angle X-ray diffraction, and thermal analysis. The results show that thermal stability of the TiO 2-PILC is significantly increased. BET surface area of TiO 2-PILC dried at 50℃ in air for 12h is 202m 2/g, that of TiO 2-PILC calcinated at 500℃ for 12h is 183m 2/g, which are much larger than that of unpillared bentonite(11m 2/g).

Objective To study the best extracting technology of Compound Taizishen Granule prescription.Methods The total polysaccharides and total saponins were determined by UV spectrophotometer.With the content of total polysaccharides and total saponins as comprehensive indexes,orthogonal test was applied to investigation of the water addition,extraction time,and extraction times for optimizing the best extracting technology.Results The best extracting technology was using 10 times the amount of water,extracting 3 times and 1.5 h per time.Conclusion The extraction technology is safe and effective,which can be used as extraction for Compound Taizishen Granule prescription.

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The Microstructure and Thermal Performance of Phenolic Resin(PF)/Rectorite(REC) Nanocomposites Produced by High Pressure Method

High pressure method was used to produce phenolic resin(PF)/rectorite(REC) nanocomposites.The microstructure and thermal performance of the nanocomposites was studied by X-ray diffraction(XRD),transmission electron microscope(TEM),and thermal analysis.The experimental results show that exfoiated resin/clay nanocomposites can be formed under high pressure conditions by the intercalation of polymeric molecules without interlayer polymerization.Morphological studies using TEM and XRD indicated that the clay particles within the phenolic resin was exfoliated and dispersed homogenously in the phenolic resin,and the thermal performance of the nanocomposites changed obviously.

Objective To study the best extracting technology of Compound Taizishen Granule prescription.Methods The total polysaccharides and total saponins were determined by UV spectrophotometer.With the content of total polysaccharides and total saponins as comprehensive indexes,orthogonal test was applied to investigation of the water addition,extraction time,and extraction times for optimizing the best extracting technology.Results The best extracting technology was using 10 times the amount of water,extracting 3 times and 1.5 h per time.Conclusion The extraction technology is safe and effective,which can be used as extraction for Compound Taizishen Granule prescription.

eng_Latn

Microemulsions with commercial nonionic surfactants: study of their formation and detergency properties

ABSTRACT Microemulsion regions in systems of commercial nonionic surfactant, water and aliphatic hydrocarbon have been determined. The influence of hydrocarbon chain length, nature of surfactant and temperature in microemulsion formation was studied. Textile deter-gency tests of these microemulsions, in conditions of minimum mechanical energy and at low temperature showed that they are highly efficient to promote soil removal.

Abstract A mixture of mono- and di-substituted nitriles was separated on six different liquid phases, but a mixture of mono- and di-substituted anilines was separated on only two liquid phases. The forces influencing the separation and elution order of these solutes are discussed. The absence of selective interactions between aromatic hydrocarbons and the various liquid phases was proved thermodynamically. An ortho methyl substituent increases the log of the specific retention volumes of the nitrile solutes by an approximately constant amount.

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Granular formulation and manufacturing method

Object of the present invention to provide a granular preparation hours even in average particle diameter, can be effectively controlled drug dissolution characteristics. The present invention provides a granule formulation, wherein that the first coating layer containing a water-insoluble polymer particles and inorganic particles and granular formulations of a drug having a first cladding layer of the coated drug particles and / or lipid components, the lipid component contains more C15 fatty acids.

The pharmacodynamics is affect by particle size of wild G.Lucidum.This paper uses laser equipment of particle size analysis of the particle size for wild G.Lucidum powders. The study is focused on dispersion medium kind, dispersion medium quantity, ultrasonic time and temperatures for the influence of wild G.Lucidum powder, the particle size analysis. The best condition:dispersion medium is Tween-80 ; dispersion medium quantity is 1.0%; ultrasonic time is ≥6min and temperature is 5℃～35℃ .

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Growth mechanisms and selectivity for graphene or carbon nanotube formation on SiC ( 0 0 0 1 ¯ ): A density-functional tight-binding molecular dynamics study

Abstract We have performed density-functional tight-binding simulations mimicking the thermal decomposition of the SiC ( 0 0 0 1 ¯ ) surface to reproduce the experimentally observed growth of either graphene or carbon nanotubes. A graphene-like network was obtained from a layer-by-layer decomposition of the SiC surface. The interaction between graphene and SiC was found to be relatively weak. Meanwhile, carbon nanotubes grew when a five-membered ring was initially formed together with a carbon chain. The simulation results suggest that growth selectivity depends on the overall carbon network connectivity and carbon aggregation speed at the very initial stage of the decomposition process.

A controllable impregnation of glass fibre structures used in high performance fibre reinforced cement composites can nowadays only be obtained by hand lay-up means, constraining possible structural applications of this promising composite. This paper discusses an innovative manufacturing process designed for the mechanical impregnation of textile reinforcements by a suitable cement matrix. The basic principles of this self-compacting impregnator (SCI) as well as the manufacturing of the cement based laminates will be explained. For comparison, uniaxial tensile strength and interlaminar shear strength were measured on specimens obtained by both production techniques, hand lay-up and SCI. The quality obtained with the laboratory prototype SCI is comparable with the quality obtained by hand lay-up.

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Acceleration of Particle Based Fluid Simulation with Adhesion Boundary Conditions Using GPU

We present adhesion boundary conditions for smoothed particle hydrodynamics (SPH) with implicit surfaces. An existing method called ghost SPH addresses adhesion boundary conditions and produces plausible liquid animations using ghost particles. The generation of ghost particles, however, takes considerable computation time when it is implemented on graphics processing units (GPUs). The purpose of this paper is to accelerate ghost SPH using GPUs. In order to accelerate the processing of adhesion boundary conditions, we propose a new boundary model that can skip the ghost particle generation process in air and solid objects. The proposed technique is not just efficient but also inherits other advantages of implicit surfaces such as smoothness. Our test results show that the proposed method efficiently produces natural fluid adhesion motion without air or solid particles and achieves more than a hundredfold speed up compared to ghost SPH.

The aim of this study was to determine the basic rheological parameters of dispersed highly concentrated lignite aqueous suspensions. Typical dilatant behavior was observed, where critical parameters of dilatancy were determined for different size fractions and concentrations. To modify the non-Newtonian behavior of the lignite highly concentrated suspensions, the effect of surfactant addition on the flow parameters of the suspensions was determined.

eng_Latn

Modeling the viscoelastic compaction response of 3D woven fabrics for liquid composite molding processes

In liquid composite molding processes, the compaction characterization of fibrous reinforcements plays a key role in determining the thickness, fiber volume content, and part shape. This study pres...

Abstract In this research the moisture susceptibility and rutting resistance Stone mastic Asphalt containing amorphous carbon powder as filler material were investigated. Amorphous carbon powder was used as a replacement of the limestone filler by 25, 50, 75 and 100%. Performance of the mixtures was evaluated using indirect tensile strength and resilient modulus tests in dry and wet conditions, boiling water, dynamic creep and wheel track tests. The results revealed less moisture susceptibility of modified mixtures with 50% of carbon powder as filler compared to that of control mixtures. Moreover, using up to 50% of amorphous carbon improved the resilient modulus and rutting resistance of SMA mixtures without a considerable negative impact on the fracture energy.

eng_Latn

The investigation of early hydration and pore structure for limestone powder wastes blended cement pastes

Abstract This work systematically investigates the early hydration process and pore structure evolution of high limestone powder wastes content blended cement pastes by non-contact impedance measurement and microstructural tests. According to the evolution of impedance response, the early hydration process of blende cement pastes can be divided into four stages, denominated as dissolution, acceleration, dynamic balance and hardened stages, respectively. Dynamic balance stage not present in hydration process of pure cement, is a characteristic hydration stage for blended cement pastes. Furthermore, fractal approach for predicting the evolution of pore structure is proposed originally, based on the impedance results.

Bascd on the whole physical of inverse humidity given in literature, a new scheme of land-surface process parameterization is designed. The new scheme has successfully simulated appearing the inverse humidity phenomenon in desert near oasis. The simulated result is coincident with the observed ones, so that the new scheme of land-surface process parameterization is feasible. These conclusions are beneficial to study heterogeneous land-surface process.

eng_Latn

Solitons of dipolar spinor condensates in an optical lattice

Solitons of dipolar spinor condensates confined in a one-dimensional optical lattice are studied in terms of the equation of motion of the spinor which is reduced to the sine-Gordon equation in the limit of strong dipole–dipole interaction and weak external magnetic field. It is shown that the solitons obtained analytically can be easily controlled by adjusting the light-induced dipolar interaction, which is realizable in the optical lattice created by red-detuned laser beams with modulating intensity. The possible creation and detection schemes are also proposed.

The aim of this study was to determine the basic rheological parameters of dispersed highly concentrated lignite aqueous suspensions. Typical dilatant behavior was observed, where critical parameters of dilatancy were determined for different size fractions and concentrations. To modify the non-Newtonian behavior of the lignite highly concentrated suspensions, the effect of surfactant addition on the flow parameters of the suspensions was determined.

eng_Latn

Chemical/Mechanical Analyses of Anhydride-Cured Thermosetting Epoxys: DGEBA/NMA/BDMA

The chemical state of cure in a thermosetting resin was used to predict the resin's equilibrium modulus. High performance liquid chromatography analyses of the sol fraction yielded molar dynamics for monomeric, oligomeric, and polymeric molecules. Their population density distributions were compared with theoretical predictions based on a chain-growth polymerization mechanism. The resulting chemical estimates of the state of cure were integrated into calculations yielding concentrations of network structures within the gel that contribute to the density of elastically active strands and junctions. The theory of rubber elasticity was then used to predict the equilibrium modulus. Measurements incorporated dynamic mechanical analysis. A comprehensive understanding of the polymerization mechanism and cure history are required for accurate simulations of contributions from branch nodes and chain links. Deterministic models based solely on chemical reaction analysis were used to estimate chain connectivity with...

Background ::: Anthropometric models remain appropriate alternatives to estimate body composition of peripubertal populations. However, these traditional models do not consider other body components that undergo major changes during peripubertal growth spurt, with restrictions to a multicompartimental approach as a quantitative growth. DXA has great potential to determine pediatric body composition in more than one component (3-C), but has limited use in field settings. Thus, the aim of this study was to propose and validate an anthropometric model for simultaneous estimation of lean soft tissue (LST), bone mineral content (BMC) and fat mass (FM) in healthy girls, from a multivariate approach of densitometric technique, as the criterion method.

eng_Latn

Studies on the absorption and disposition of 3H-labelled talc in the rat, mouse, guinea-pig and rabbit

Abstract The absorption and disposition of talc was studied in rats, mice and guinea-pigs, following a single oral dose of 3 H-labelled material. The translocation of talc in the rabbit urogenital tract was studied after single and multiple intravaginal applications. More than 95% of the dose of orally administered talc was excreted in the faeces within 3–4 days by all three species studied. Traces of radioactivity found in the urine probably reflected contamination of the samples by contact with the faeces and the presence of labile 3 H associated with the 3 H-labelled talc. No translocation of talc to the liver or kidneys was found. In the rabbit study, no translocation of talc into the ovaries was detected.

Reference to the AC-13 asphalt mixture gradation,the rubber particles instead of part of the fine aggregate were added to the asphalt mixture as aggregate.Through indoor Marshall test the effect of the rubber particles on the asphalt mixture Marshall mechanical index was analyzed.The results show that by adding the rubber particles the Marshall stability of the asphalt mixture is reduced,and the flow value is increased. Comparing with the large particle size of rubber particles,the use of small particle size rubber particles can improve the Marshall stability,and the flow valus decreases.The Marshall stability of rubber particles asphalt mixture by using petroleum asphalt is lower than that by using SBS modified asphalt.

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Numerical study of the motion behaviour of three-dimensional cubic particle in a thin drum

The motion of three-dimensional cubic particles in a thin rotating drum is simulated by the SIPHPM method. The drums with frictional or smooth front and rear walls, and the particles of cubic and spherical shapes, and different particle numbers are considered to study the effect of cubic particle shape, end-wall frictions and filling levels. Different flow patterns of cubic particles are observed, which are significantly dominated by the friction from the end-walls. The probability density function of velocity components, the flatness factors are used to analyze the motion behaviour of cubic particle. The Froude number, ensemble mean and time averaged particle velocities are also analyzed. A primary and secondary mode of driving from the end-wall frictions are indicated and the mechanisms on the influences of wall friction, particle shape and filling levels are fully explained.

Based on the theory of elastic mechanics,an analytical solution was derived for a compress sample of triaxial compression test.According to the mechanical characteristics and the analytic solution of the compress sample,a method and a formula for calculating the Poisson ratio of grain were put forward.The experimental data of the triaxial compression test of rice was analyzed and verified according to related references,and the results showed that the method was feasible.

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Damage Creation in Single Crystal Silicon Induced by He Ion Implantation at Different Energies

Single crystal silicon samples were implanted at room temperature with He ions of different energies (40, 160 and 1550keV) to the same fluence of 5×10~(16) ions/cm~2. Cross-sectional transmission electron microscopy was used to study on the formation of cavities after the subsequent annealing at 800℃ for 1h. The results show that cavity band can be formed in He ion implanted samples with different energies. However, the width of the band, the size of cavities, the morphology and location of the band depend strongly on the implantation energy of He ions. The results are discussed in combination with the TRIM simulations.

A controllable impregnation of glass fibre structures used in high performance fibre reinforced cement composites can nowadays only be obtained by hand lay-up means, constraining possible structural applications of this promising composite. This paper discusses an innovative manufacturing process designed for the mechanical impregnation of textile reinforcements by a suitable cement matrix. The basic principles of this self-compacting impregnator (SCI) as well as the manufacturing of the cement based laminates will be explained. For comparison, uniaxial tensile strength and interlaminar shear strength were measured on specimens obtained by both production techniques, hand lay-up and SCI. The quality obtained with the laboratory prototype SCI is comparable with the quality obtained by hand lay-up.

eng_Latn

Dependence of Some Physical Characteristics of Epoxy Compounds on the Filler Parameters

The effect of the dispersion and thermophysical properties of the filler on the characteristics and aging of the UP5-162 epoxy compound is investigated. It is shown that the particle size and homogeneity of filler distribution affect significantly the internal mechanical stresses during compound curing. Thermal aging of the compound and resistance to thermal stresses are significantly influenced by the thermal conductivity and heat capacity of filler particles. The necessary condition of high mechanical properties and resistance to thermal aging of the compound is a narrow dispersion of filler particles.

In liquid composite molding processes, the compaction characterization of fibrous reinforcements plays a key role in determining the thickness, fiber volume content, and part shape. This study pres...

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Mineral Processing Scientific Research on a Gold-Bearing Polymetallic

In this article amalgamation flotation combined flowsheet and adaptable technology additions was adopted basing on the full demonstration and experimental study,in addition of head grade:Au 7.18 g/t,Ag47.7 g/t, Cu 0.207%,experiment index:flotation bulk concentrate contain Au 54.00 g/t,Ag 509.0 g/t,Cu3.13%,the recovery of Au Ag Cu was 90.53%?95.98?97.67;full mud cyanide leaching:Au leaching rate is 84.60%?Ag leaching rate is 78.60%.

FIELD: foundry, namely casting method with use of casting mold having consumable model. SUBSTANCE: method comprises steps of producing porous powdered part of non-evaporated powder; manufacture of casting mold with use of porous powdered part as consumable model; casting melt metal to prepared casting mold. At casting process porous powdered part practically completely breaks and powder being partially material of part becomes component of cast article. EFFECT: simplified process of casting articles of complex shape and complex inner structure without using inserts. 38 cl, 2 dwg, 1 ex

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Design Proposal for Concrete Cover Separation in Beams Strengthened by Externally Bonded Tension Reinforcement

Existing experimental observations have shown that the application of externally bonded reinforcement (steel plate, FRP laminate, overlay, etc.) to strengthen RC structures can lead to brittle failures involving debonding of the external reinforcement before the design load is reached with classical failure modes. The design approach to determine the strengthening material and its area should avoid these premature failures. In this study, an analytical model developed for the overlay strengthening by the authors is firstly proved to be applicable for the steel plate or FRP laminate strengthening by comparing the analytical and experimental failure load as well as the failure mode of the strengthened beams reported in the literature. Then the main parameters involved in the process of concrete cover separation are identified and a simple criterion is proposed for prediction of premature failure.

Abstract Methods of estimating the concentration of effective network chains from the stress—strain behaviour of elastomers both dry and swollen in solvents are discussed. It is pointed out that while measurements in uniaxial extension are more difficult to carry out experimentally than measurements in uniaxial compression, they are preferred because they can provide more information about the behaviour of the elastomer. An equation is presented for relating the stress—strain behaviour of swollen composites containing inert fillers to the behaviour of a gum having the same degree of crosslinking; experimental data on SBR—glass bead composites are presented which indicate that the equation is applicable.

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Epoxy resin-modified cement binder composition as a coating or seal

A) at least one epoxy resin, binder (A); B) containing a water at least one amine compound as amine curing agent, an aqueous curing agent (B); C) at least one water including hydraulic inorganic binder, preferably cement, a multi-composition comprising a solid agent (C), based on the total weight, it contains at least 8% by weight of an organic binder, the organic binder , and from the total amount of epoxy resin and amine curing agent, multidrug composition is disclosed. The multi-composition preferably comprises at least one pigment as a colorant. The multi-agent composition has excellent compatibility to the floor coating or sealing, which can be prepared in a variety of colors.

Performance of metal gasket influenced by the final design of the forming result. Good shape of the gasket will give optimal leakage performance. It is difficult to produce good shape because of the spring back effect. In this study, we investigated the forming process of metal gasket 400MPa-mode for two types of dies which are open dies and closed dies. The finite element method employed to analyze the effect of different types of dies on the final design of the corrugated metal gasket. The simulation shows corrugated metal gasket 400MPa-mode with closed dies result in better final shape than open dies.

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Experimental Research on Mineral Processing of High Content of Slime and Finely Disseminated Bauxite Ore

The content of slime was high and the A/S ratio was relatively low,and the objective mineral was finely disseminated,so it was extremely difficult to be separated. Based on the ore property,the measures such as pre-desliming,combination of stage grinding and check classification and adopting the collector of EMLB-2 were taken, and the bauxite concentrate with A/S ratio 9.49 was obtained, at recovery of 80.22% Al2O3. At the same time, the sulphur which contained 46.88% S with recovery of34.14% was comprehensively recycled,and the study could provide technical support for the development of this kind of ore.

By feeding the silkworms with the nano Fe3O4 powder together with mulberry leaves, we directly obtained silkworm spun pristine magnetic silk fiber, MSF. To compare with the normal SF found that this MSF not only has expected magnetic properties, but also has enhanced thermal stability and mechanical properties, e.g. stress and strain.

eng_Latn

Study of the rheological properties of dispersed lignite suspensions

The aim of this study was to determine the basic rheological parameters of dispersed highly concentrated lignite aqueous suspensions. Typical dilatant behavior was observed, where critical parameters of dilatancy were determined for different size fractions and concentrations. To modify the non-Newtonian behavior of the lignite highly concentrated suspensions, the effect of surfactant addition on the flow parameters of the suspensions was determined.

A statistical analysis has been made of the distribution functions for residence time of a liquid in different flow formulations. The region of application of the different models of longitudinal dispersion is discussed.

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Characterization of three recycled materials for alternative use of mortars

Because natural resources in construction are limited, it is advisable to look for new alternatives that meet comparable functions, and likewise, reduce consumption of non-renewable resources. The use of recycled materials is of benefit to the uncontrolled elimination of residues that cause the use of the public resources, such as landfills. In addition, this contributes to the reduction of the environmental impact caused by the industries in the process of obtaining the same ones. Therefore, recycled materials such as concrete or masonry demolished, glass and ceramics different, can be employed in different ways to be used in the construction industry. This work focuses on presenting the initial characterization of three recycled materials as an alternative to use in replacement of natural sand in mortars, this as a first step for further study in different percentages of replacement, as currently his understanding is unknown, or little known.

Introduced the application of the principle of wet magnesia flue gas desulphurization technology and process,this paper absorption oxidation reaction in which the absorber tower system design and application of the device,and provides a theoretical basis and reference.

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Processing and characteristics of TiB2 toughened B—Ti—C composites

B-Ti-C composites toughened by TiB2 particles were produced by reaction sintering of B4C, TiC and TiB2 powders. Microstructure and mechanical properties of the composites were studied. A notable improvement on flexure strength and fracture toughness were achieved in B4C composites containing 10%TiB2 and 20%-30%TiC(volume fraction). The highest flexure strength and fracture toughness, 425Mpa and 8.2Mpa*m1/2, respectively, resulted for B4C-10%TiB2-30%TiC composite, are much higher than those for monolithic B4C. The main toughening mechanism is microcrack toughening and crack deflection toughening.

Objective To study the best extracting technology of Compound Taizishen Granule prescription.Methods The total polysaccharides and total saponins were determined by UV spectrophotometer.With the content of total polysaccharides and total saponins as comprehensive indexes,orthogonal test was applied to investigation of the water addition,extraction time,and extraction times for optimizing the best extracting technology.Results The best extracting technology was using 10 times the amount of water,extracting 3 times and 1.5 h per time.Conclusion The extraction technology is safe and effective,which can be used as extraction for Compound Taizishen Granule prescription.

eng_Latn

Effects of particle size distribution, surface area and chemical composition on Portland cement strength

The fineness of a Portland cement and its chemical composition are the key factors in determining cement strength characteristics. This paper describes a study of the relationship between cement particle size distribution and surface area, and the effects of size distribution, surface area and chemical composition on concrete strength. A new correlation between particle size distribution and surface area has been established and models which include the size distribution and chemical composition as factors have been developed to predict cement strength based on a large data base generated from industrial surveys. These models are useful in optimizing clinker grinding by simulation. The relationship between the cement compressive strength determined by the concrete mix and mortar test methods is also discussed.

The properties of the system EHEC/SDS/water in solution show considerable time dependence during several hours after preparation. The paper discusses various reasons for this time dependence. Similar time dependence in polymer solutions has been observed elsewhere. It is found that although the system properties vary, a true equilibrium is finally attained for all compositions. The most pronounced time dependence is shown in a region close to and above the CMC of a pure surfactant solution and for polymer concentrations at least equal to the critical overlap concentration. It is proposed that part of the explanation resides in the fact that in the solution preparation there appears intermediate states corresponding to high local polymer concentrations. Some quantitative aspects of the time dependence are also discussed.

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Spin-label study of immiscible polymers—II. Influence of polyisoprene on end-labelled polystyrene

Abstract Electron spin resonance spectra of blends of polyisoprene (PIP) and polystyrene (PS), carrying a nitroxide spin-label, show that the PIP exerts a plasticizing influence on the labelled chain-ends of PS. This effect presumably occurs at the interphase where certain of these chain-ends appear to be in a predominantly PIP environment. Treating the labelled PS as a macromolecular spin probe shows that the effective volume of an inner PS segment is ca 1.6 times greater than that of a labelled chain-end and ca 1.7 times greater than that of an inner PIP segment. Comparing the results with previously published data for spin-probed PS suggests that rotation of the chain-end label involves more than one styrene unit along the chain.

The goals of the paper are to understand the impact damage behavior and identify the effect of surface protective materials on impact resistance in filament wound composite pressure vessels. For these, a series of low velocity impact tests was performed on specimens cutting from the full scale pressure vessel by the instrumented impact testing machine. The specimens are classified into two types, which are with and without surface protective material. The visualization for impact damage by two different impactors is made by metallurgical microscope. Based on the impact force history and damage, the impact resistance parameters were employed,rod its validity in identifying the damage resistance of filament wound composite pressure vessel was reviewed. As the results, the impact resistance of the filament wound composites and its dependency on the surface protective material were evaluated quantitatively

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The importance of physicochemical swelling in cartilage illustrated with a model hydrogel system

Abstract The physicochemically derived swelling stress in articular cartilage plays a crucial role in determining the pattern of stress sharing between the exudable fluid and the ‘solid’ components comprising its matrix. This pattern of stress sharing in turn influences the manner in which cartilage consolidates or deforms in compression via the outflow of fluid. Synthetic hydrogels exposed to a variety of cationic blocking solutions provide simplified model systems for exploring quantitatively the influence of the intrinsic swelling parameter on consolidation behaviour, thus yielding further insights into the fundamental parameters controlling the biomechanical properties of complex tissues such as articular cartilage.

Summary In the pilot study, a new geomodeling technology is presented for developing 3D heterogonous geomodels for Athabasca McMurray (MCMR) oil sands. The geomodels were used to simulate SAGD thermal recovery. Both conventional SAGD completions and SAGD with ICD completions were tested. The simulation results show that for a heterogeneous Athabasca McMurray oil sand reservoir, the ICD completion technology enhances oil production and reduces steam consumption. As a result, the economics of SAGD recovery from the heterogeneous sands is improved.

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Treatment of substrates for improving ink adhesion to the substrates

Than the primer treatment with the treating composition to allow the aqueous ink composition of superior polymer-based, and generally discloses a production method thereof. More particularly, the polymer substrate may be a hydrophobic polymer substrate, such as those comprising a polyolefin, which exhibit excellent ink adhesion and frictional resistance than when the pre-treated with a treatment composition of the present invention. Polymer substrate, ink adhesion, polyolefin, friction resistance, print composition, the treating composition

The aim of this study was to determine the basic rheological parameters of dispersed highly concentrated lignite aqueous suspensions. Typical dilatant behavior was observed, where critical parameters of dilatancy were determined for different size fractions and concentrations. To modify the non-Newtonian behavior of the lignite highly concentrated suspensions, the effect of surfactant addition on the flow parameters of the suspensions was determined.

eng_Latn

A new approach to treating plastic strain in glassy polymers

A new deformation mechanism of glassy polymers is suggested. The approach is based on experimental data obtained in deformation calorimetric studies, residual strain e res recovery rate measurements, thermally stimulated creep, DSC, and others. Work and heat of deforming a sample were measured, and the concomitant variation of internal energy was calculated. A large number of glassy polymers and blends were examined. It was found that from the very start of the deformation, a rather large fraction of the work is converted to internal energy of the polymer, which suggests that essential rearrangemenu of its structure occur

The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc.

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Screening of Fine Granular Material

This article describes screening of fine granular materials, including minerals. The first part of the study presents a description of screening and an analysis of resulting conclusions. The second part describes screens that have been developed in Lodz Technical University labs. From a number of screens only three have been chosen and described in this article. Additionally, results of some pilot-plant-scale tests involving these screens made at Lodz Technical University are discussed. Experimental tests covered first motion of the sieves, and then the process of screening on these sieves. Results are presented both in a graphic form as diagrams and in the analytical form as correlations.

In liquid composite molding processes, the compaction characterization of fibrous reinforcements plays a key role in determining the thickness, fiber volume content, and part shape. This study pres...

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Interfacial properties of zirconium dioxide prepared by the sol-gel process

Abstract The properties of the zirconium dioxide-water interface have been studied in aqueous solutions of NaCl, Na 2 SO 4 , CaCl 2 and CaSO 4 . Zirconium dioxide has been prepared by the sol-gel process. Electrophoretic mobility has been determined as a function of pH in the presence of various electrolytes at different ionic strengths (pH iep about 6.7). The pH pzc value was determined by the batch equilibration method (pH pzc varying from 3.9 to 7). One of the intrinsic equilibrium constants was calculated (p K a2 =6.2).

A calculation model is developed for mechanical seals with a laser-textured micro-pore face. The dimensionless hydrodynamic pressure distribution on the seal face at various conditions and micro-pore geometry parameters is obtained from a solution of the Reynolds equation by finite difference method. An optimum micro-pore geometry parameter is found and consistent with experimental results. Results of parametric study demonstrate that substantial hydrodynamic effect can be produced on the seal face with micro-pores.

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RAST Model: simulation of tensiotraces to facilitate drophad engineering

Tensiography is a technique that determines the physical and chemical properties of a liquid by illuminating a growing pendant drop from within using a source fibre. Light reflected internally at the surface of the drop is recieved by a collector fibre and is converted into an electric signal called a tensiotrace, which is a graph of reflected light as a function of drop volume. The instrument obtaining this signal is called multianalyser. A numerical model that simulates tensiotraces through a raytracing analysis (RAST - Raytracing Analysis for the Simulation of Tensiotraces) of the multianalyser as been developed to define theoretically how the tensiotrace describes the physical and chemical properties of a liquid. The purpose of this study is to investigate the model as an engineering/design assistant leading to discoveries and improvements to the multianalyser.

In this paper,the soil disturbance induced by the construction process of dry-cement jet mixing columns,the change of the radial stress and the tangential stress,and the analytial solution of the radial displacement are all analysed in this paper,the analytial solution to the boundary between the plastic section and the elastic section is also included.

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THE EFFECT OF POLYMER IN STEEL FIBER REINFORCED CEMENT COMPOSITES

Three kinds of polymers, polymethylaarylate emulsion (PAE) , polyvinyl formal solution (PV-FO),styrene acrylate copolymer emulsion(SA) are chosen to study the effect of polymer in steel fiber reinforced cement composites (SFRCC). The experimental results shonw that the bonding properties in SFRCC are remarkably im proved after the addition of three kinds of polymer. The inter facial handing strength is obroiously enhanced with the addition of polymer contents, and is gradually steady or cut down slightly when the polymer content ercesses 15%. In the meantime,the toughness of SFRCC is greatly advanced when the polymers are doped. At last, the effect mechanism of polymer in SFRCC is put forward

Most theories about macromolecular crowding focus on two ideas: the macromolecular nature of the crowder and entropy. For proteins, the volume excluded by the crowder favors compact native states over expanded denatured states, enhancing protein stability by decreasing the entropy of unfolding. We tested these ideas with the widely used crowding agent Ficoll-70 and its monomer, sucrose. Contrary to expectations, Ficoll and sucrose have approximately the same stabilizing effect on chymotrypsin inhibitor 2. Furthermore, the stabilization is driven by enthalpy, not entropy. These results point to the need for carefully controlled studies and more sophisticated theories for understanding crowding effects.

yue_Hant

Flexural strength of composites: influences of polyethylene fiber reinforcement and type of composite

Main problem ::: The microfill veneering of hybrid composite restorations has been indicated to improve esthetics. Also, polyethylene fiber reinforcement has been proposed for use in composite restorations in high-stress clinical situations. However, minimal information in the literature addresses the influence of such combinations on the resistance to fracture. The purpose of this study was to investigate the flexural strength of two composites, a microfill and a hybrid, the effect of their combination, and the influence of polyethylene fiber reinforcement.

A fluorinated elastomer composition exhibiting a less weight change in all plasma processings, including NF3 plasma processing, O 2 plasma processing and CF4 plasma processing, performed in the process of semiconductor manufacturing, thus having striking resistance to plasma. There is further provided a molding of the fluorinated elastomer composition.

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Analysis of the Hydrodynamic Effects in Non-connecting Mechanical Seals with a Laser-textured Micro-pore Face

A calculation model is developed for mechanical seals with a laser-textured micro-pore face. The dimensionless hydrodynamic pressure distribution on the seal face at various conditions and micro-pore geometry parameters is obtained from a solution of the Reynolds equation by finite difference method. An optimum micro-pore geometry parameter is found and consistent with experimental results. Results of parametric study demonstrate that substantial hydrodynamic effect can be produced on the seal face with micro-pores.

A device for surface sealing, in particular of landfills, dumps, heaps or the like, with a mineral sealing layer (1) provided with a water-permeable layer (2, 3; 2, 4; 10, 11, 3) is provided, characterized in that the water-permeable layer (2, 3; 2, 4; 10, 11, 3), sealing elements (2; 10), joints (3) and / or gaps (4) are provided between which, the distance is adjusted so that the mineral sealing layer (1) is kept permanently moist.

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Hypothesis to Explain the Preferred Orientations of Quartz and Calcite Produced During Syntectonic Recrystallization

The hypothesis presented in this paper explains the preferred orientations of quartz and calcite produced during Syntectonic recrystallization, in terms of the preferential growth of grains that are stable with respect to the translation mechanisms operative in particular stress fields. The common preferred orientations of quartz and calcite, including "ac" girdles, cross-girdles, and the common maxima positions of quartz, can be correlated with predictions made by an analysis of stable growth orientations in various stress fields. Experimentally produced preferred orientations and two examples of natural quartz fabrics are used to illustrate the hypothesis. One of these, a mylonite from New Zealand, is treated in detail. It is shown that the mylonite results from simple flattening, and not from translational movements.

In IDSS,indexes for decision need usually be quantilized for further analysis and process.Bothconverse qualitative mapping(CQM)and property coordinate study and analysis are new methods in theory of property.The former is to quantilize indexes,and the latter is to study sample,then to get global satisfying degree of indexes according to evaluators' preference.Take enterprise's culture for example,205 enterprises' culture was evaluated on the basis of three indexes with reasonable result.A new method is proposed for inteligent decision.

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Studies on Thermal Performance of Advanced Aerogel-Based Materials

The present work describes the development and assessment of aerogel-based brick fillings, as well as aerogel blow-in insulation with optimized thermal performance. The brick filling was developed within the EU Horizon 2020 project Wall-ACE. The focus of this work was the assessment of the brick filling developed by the industrial partners in the project to present a new class of bricks with outstanding thermal performance. Within the EU-project EFFESUS, an aerogel-based blow-in insulation was developed by an industrial partner and tested by several research partners. A feasibility study at a heritage building in Glasgow and large-scale laboratory tests were performed to assess the material with respect to thermal performance, applicability and removability.

PURPOSE OF THIS PATENT is the use of polymers SPECIAL GRAFT FOR IMPROVING THE RESISTANCE TO GASOLINE polycarbonates and / or polyester thermoplastic aromatic mixtures of polycarbonate and / or polyester WITH THESE POLYMERISED SPECIAL GRAFT AND, IF ANY, TERMOPLASTICAS WITH OTHER RESINS AND / OR EFFECTIVE AMOUNTS Customary additives, and also a process for obtaining these mixtures.

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Mechanical Properties of Cement Composites with Alternative Binders

The paper refers to previous research in the field recycling and reuse of secondary raw materials. It deals with utilization of micro-grounded recycled material and fly-ash as a partial substitution of Portland cement in cementitious composites. Six sets of test specimens with varying recipe were prepared for testing of mechanical properties. Flexural strength was tested on specimens 40x40x160 mm and then compression strength was measured on fragments from flexural tests. Results of tests are presented and discussed.

The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc.

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The elasto-plastic analysis of the soil disturbance induced by construction of dry-cement jet mixing cloumns

In this paper,the soil disturbance induced by the construction process of dry-cement jet mixing columns,the change of the radial stress and the tangential stress,and the analytial solution of the radial displacement are all analysed in this paper,the analytial solution to the boundary between the plastic section and the elastic section is also included.

Abstract Many human operations have created a large population of small orbital debris in near Earth environment. The threat they represent for satellites is a major factor for the preparation of future space missions. Several experiments devoted to the study of this environment, as well as various materials exposed to space, have been retrieved in the past few years. The analysis of the results shows some differences with previous modeling. Comparison with data from LDEF and from EURECA give some insight in the long term evolution of particle size distribution. Chemical identification of particle remnants inside craters is difficult but provides valuable information on the origin of the impactors. Permanent monitoring of environment is obviously needed, especially for the type of orbits where data are presently scarce ie. heliosynchronous and geostationary orbits.

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Interactions between lead and different binders

The present study describes the interactions between lead nitrate, representative of soluble lead compounds, and seven cements based on either ordinary Portland cement (OPC) or ground-granulated blast furnace slag (GGBFS). Suspensions of cements contaminated by lead nitrate were investigated by means of electrical conductivity, powder X-ray diffraction, Fourier Transform-infrared spectrometry, scanning electron microscopy, inductively coupled plasma-optic emission spectroscopy, and ionic chromatography. Pastes cast with these contaminated cements were submitted to leaching tests. The presence of fly ash was not favourable toward lead fixation and the best retention of lead was obtained with GGBFS-based cements. The most efficient binder was SPINOR, an ultrafine GGBFS-based cement.

Abstract : JAYCOR determined that much of the pressure trace detail from the M-198 155mm howitzer with the M203 charge could be understood in terms of gas dynamics and the gun and ground geometry. The objective was to determine the feasibility of simulating the far field muzzle blast and to interpret the field data already taken. A lung model was also developed which gives a way of comparing various pressure traces in terms of the internal dynamics. The agreement seen between measured and predicted pressure traces is repeated in the lung response. A bio- mechanical workshop was also held in Albuquerque, New Mexico on lung modeling. (Author)

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what are the benefits of polymers

The benefits of polymer additives in this study are shown to include improved shear stability, enhanced water resistance, and increased yield. Polymer additives are available in a variety of forms, including liquid, gel, powder and pellet, for ease of use.he benefits of polymer additives in this study are shown to include improved shear stability, enhanced water resistance, and increased yield. Polymer additives are available in a variety of forms, including liquid, gel, powder and pellet, for ease of use.

What is gum base? Gum base is what gives chewing gum its “chew.” It is made of a combination of food-grade polymers, waxes and softeners that give gum the texture desired by consumers and enable it to effectively deliver sweetness, flavor and various other benefits, including dental benefits.

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We investigate active learning with access to two distinct oracles: Label (which is standard) and Search (which is not). The Search oracle models the situation where a human searches a database to seed or counterexample an existing solution. Search is stronger than Label while being natural to implement in many situations. We show that an algorithm using both oracles can provide exponentially large problem-dependent improvements over Label alone.

We study the rates of convergence in generalization error achievable by active learning under various types of label noise. Additionally, we study the general problem of model selection for active learning with a nested hierarchy of hypothesis classes and propose an algorithm whose error rate provably converges to the best achievable error among classifiers in the hierarchy at a rate adaptive to both the complexity of the optimal classifier and the noise conditions. In particular, we state sufficient conditions for these rates to be dramatically faster than those achievable by passive learning.

Blunt trauma abdomen rarely leads to gastrointestinal injury in children and isolated gastric rupture is even rarer presentation. We are reporting a case of isolated gastric rupture after fall from height in a three year old male child.

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The Optimality of a Fast CNF Conversion and its Use with SAT

Despite the widespread use and study of Boolean satisfiability for a diverse range of problem domains, encoding of problems is usually given to general propositional logic with little or no discussion of the conversion to clause form that will be necessary. In this paper we present a fast and easy to implement conversion to equisatisfiable clause form for Boolean circuits, a popular representation of propositional logic formulae. We show that the conversion is equivalent to that of Boy de la Tour and is hence optimal in the number of clauses produced for linear input formulae (formulae excluding ↔), and we discuss the optimality for other input formulae. We present experimental results for this and other conversion procedures on BMC problems demonstrating its superiority, and conclude that the CNF conversion plays a large part in reducing the overall solving time.

Short text classification problem need to face some special problems to be solved different from traditional text classification,such as short text length,features sparse.This paper uses the feature extended method based on theme Ontology.It can get better classification performance by considering the semantic relations.Meanwhile,using case-base maintenance learning via the GC(generalization capability)algorithm,which can reduce the case number into K-NN algorithm,can improve efficiency when indexing near neighbor in K-Nearest Neighbor algorithm.The numerical experiments prove the validity of this learning algorithm.

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Blood Analysis by Headspace Gas Chromatography: Does a deficient sample volume distort ethanol concentration?

This study was prompted by a recent judgment in the Royal Courts of Justice (Gregory v. Director of Public Prosecutions, 2002) in a case of driving a motor vehicle after consuming too much alcohol ...

In a recent paper, the authors introduced the notion of sample width for binary classifiers defined on the set of real numbers. It was shown that the performance of such classifiers could be quantified in terms of this sample width. This paper considers how to adapt the idea of sample width so that it can be applied in cases where the classifiers are defined on some finite metric space. We discuss how to employ a greedy set-covering heuristic to bound generalization error. Then, by relating the learning problem to one involving certain graph-theoretic parameters, we obtain generalization error bounds that depend on the sample width and on measures of `density' of the underlying metric space.

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Blow up Analysis for Anomalous Granular Gases

We investigate in this article the long-time behaviour of the solutions to the energy-dependant, spatially-homogeneous, inelastic Boltzmann equation for hard spheres. This model describes a diluted gas composed of hard spheres under statistical description, that dissipates energy during collisions. We assume that the gas is"anomalous", in the sense that energy dissipation increases when temperature decreases. This allows the gas to cool down in finite time. We study existence and uniqueness of blow up profiles for this model, together with the trend to equilibrium and the cooling law associated, generalizing the classical Haff's Law for granular gases. To this end, we investigate the asymptotic behaviour of the inelastic Boltzmann equation with and without drift term by introducing new strongly"nonlinear"self-similar variables.

This paper presents the application of Artificial Neural Network (ANN) modeling for the prediction of abrasion resistance of Persian handmade wool carpets. Four carpet constructional parameters, namely knot density, pile height, number of ply in pile yarn and pile yarn twist have been used as input parameters for ANN model. The prediction performance was judged in terms of statistical parameters like correlation coefficient (R) and Mean Absolute Percentage Error (MAPE). Though the training performance of ANN was very good, the generalization ability was not up to the mark. This implies that large number of training data should be used for the adequate training of ANN models.

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Minimally invasive surgical video analysis: a powerful tool for surgical training and navigation

Analysis of minimally invasive surgical videos is a powerful tool to drive new solutions for achieving reproducible training programs, objective and transparent assessment systems and navigation tools to assist surgeons and ::: improve patient safety. This paper presents how video analysis contributes to the development of new cognitive and motor training and assessment programs as well as new paradigms for image-guided surgery.

Abstract Machine learning techniques have been widely applied to production processes with the aim of improving product quality, supporting decision-making, or implementing process diagnostics. These techniques proved particularly useful in the investment casting manufacturing industry, where huge variety of heterogeneous data, related to different production processes, can be gathered and recorded but where traditional models fail due to the complexity of the production process. In this study, we apply Support Vector Representation Machine to production data from a manufacturing plant producing turbine blades through investment casting. We obtain an instance ranking that may be used to infer proper values of process parameter set-points.

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Gradiometer Response Analysis for Current Multipole Sources

The paper presents an analytical study on the first order gradiometer effects for current multipoles as biomagnetic field sources. A tensor representation of the field expansion up to the current octupole is given and applied for the multipole description of an elementary source model. The sensitivity of first order gradiometers to the higher order poles is analysed and evaluated.

In this paper, the problems of measuring similarity in LDA face space using different metrics and fusing the associated classifiers are considered. A few similarity measures used in different pattern recognition applications, including the recently proposed Gradient Direction (GD) metric are reviewed. An automatic parameter selection algorithm is then proposed for optimising the GD metric. In extensive experimentation on the BANCA database, we show that the optimised GD metric outperforms the other metrics in various conditions. Moreover, we demonstrate that by combining the GD metric and seven other metrics in the decision level using Support Vector Machines, the performance of the resulting decision making scheme consistently improves.

kor_Hang

Iterative learning algorithms for linear Gaussian observation models

In this paper, we consider a signal/parameter estimation problem that is based on a linear model structure and a given setting of statistical models with unknown hyperparameters. We consider several combinations of Gaussian and Laplacian models. We develop iterative algorithms based on two typical machine learning methods - the evidence-based method and the integration-based method - to deal with the hyperparameters. We have applied the proposed algorithms to adaptive prediction and wavelet denoising. In linear prediction, we show that the proposed algorithms are efficient tools for tackling a difficult problem of adapting simultaneously the order and the coefficients of the predictor. In wavelet denoising, we show that by using the proposed algorithms, the noisy wavelet coefficients are subject to shrinkage and thresholding.

In this paper we consider an alpha-series process when the distribution of the first occurrence time of an event is assumed to be truncated normal distribution. Firstly, we study several nonparametric inferences including the Least-square estimate (LSE) and the Maximum-likelihood estimate (ML). Some estimators of the parameters in alpha-series process are derived by using the methods referred above. Furthermore, we consider the consistency and asymptotic normality properties of the estimators. Finally, we obtain the simulation results which are calculated over Monte Carlo replications to compare the performance of these variety estimators.

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Machine Learning Prediction of Response to Cardiac Resynchronization Therapy.

Background: Cardiac resynchronization therapy (CRT) has significant nonresponse rates. We assessed whether machine learning (ML) could predict CRT response beyond current guidelines. Methods: We an...

Summary In the pilot study, a new geomodeling technology is presented for developing 3D heterogonous geomodels for Athabasca McMurray (MCMR) oil sands. The geomodels were used to simulate SAGD thermal recovery. Both conventional SAGD completions and SAGD with ICD completions were tested. The simulation results show that for a heterogeneous Athabasca McMurray oil sand reservoir, the ICD completion technology enhances oil production and reduces steam consumption. As a result, the economics of SAGD recovery from the heterogeneous sands is improved.

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Material Cost Control Method Selection and Optimization for Coal Mine Production System

In view of the existing problem in coal material cost management which can′t be effectively solved by single cost control method,a new material cost control method was proposed which integrated activity cost method,responsibility cost method with standard cost variance,based on the deep analysis of production system and material cost structure for the coal mine.This composite method,after being applied in the coal mine corporation,is found to be beneficial for improving the production management,but also reducing the production cost.

In this work we present a decision support system for the melanoma diagnosis using individual methods and the collaboration between these methods. The system designed uses a photograph of the lesion and it makes a preprocessing task to extract the region of interest. Then, several characteristics of the image are analyzed, studying with different methods the degree of malignity; the methods used are based in Bayesian rules and in neural networks. Finally, each individual decision from each method contributes in some way to the final decision. The classification rate obtained with the cooperative approach is above 92%.

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Efficient realization of classification using modified Haar DWT

The Haar discrete wavelet transform is used as inspiration for a new simple and fast algorithm to train multiclass dyadic decision trees. A localized ordering of the training data changes a multidimensional Haar transform into the one dimensional case, and avoids cache misses. The resulting tree has very simple structure convenient for direct implementation as a fixed-depth threshold network and very fast evaluation of the classification function. The simple structure of the tree is also conducive to good compression of the function. We implement and test the learning algorithm and threshold network but without incorporating sampled interpolated-value points for improved generalization. Compression appears good in low dimensions.

A weightedL2 norm is introduced in which Markov operators, e.g., associated with noisy maps, are contracting provided the kernel (i.e., the transitional distribution) is smooth enough. This results in strong relaxational properties of noisy maps. Similar to this norm, integral functionals appear useful when studying spatiotemporal chaos and random fields.

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A pilot study to determine whether machine learning methodologies using pre-treatment electroencephalography can predict the symptomatic response to clozapine therapy

Bias in error estimation when using cross-validation for model selection

Improvements on Cross-Validation: The 632+ Bootstrap Method

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approximation by deep neural nets with .

The power of deeper networks for expressing natural functions

Delayed neuropathy after organophosphorus insecticide (Dipterex) poisoning: a clinical, electrophysiological and nerve biopsy study.

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A Note on the Analysis of (Q.r) Policy : GLD Approximation vs Distribution Free Approach

In this article, we consider the analysis of a continuous review (Q, r) inventory model with a mixture of back orders and lost sales, assuming Weibull distribution for the lead time demand (LTD). The use of generalized λ-type distribution (GLD) in approximating the LTD is demonstrated. Through numerical studies, optimal values of the policy parameters are obtained under GLD approximation method, the distribution free approach, and the exact case. Further, the expected value of additional information (EVAI) which serves as a measure of efficiency of the procedure is provided for both the GLD and the distribution free procedures.

We address the problem of comparing the performance of classifiers. In this paper we study techniques for generating and evaluating bands on ROC curves. Historically this has been done using one-dimensional confidence intervals by freezing one variable - false-positiverate, or threshold on the classification scoring function. Weadapt two prior methods and introduce a new radial sweepmethod to generate confidence bands. We show, throughempirical studies, that the bands are too tight and introducea general optimization methodology for creatingbands that better fit the data, as well as methods for evaluatingconfidence bands. We show empirically that theoptimized confidence bands fit much better and that, usingour new evaluation method, it is possible to gauge therelative fit of different confidence bands.

kor_Hang

Density testing in a contaminated sample

We study non-parametric tests for checking parametric hypotheses about a multivariate density f of independent identically distributed random vectors Z1, Z2,... which are observed under additional noise with density ψ. The tests we propose are an extension of the test due to Bickel and Rosenblatt [On some global measures of the deviations of density function estimates, Ann. Statist. 1 (1973) 1071-1095] and are based on a comparison of a nonparametric deconvolution estimator and the smoothed version of a parametric fit of the density f of the variables of interest Zi. In an example the loss of efficiency is highlighted when the test is based on the convolved (but observable) density g = f * ψ instead on the initial density of interest f.

In the process of engineering machine's design, ansys damnified conduit's reliability, with Artificial Neural Network and Finite element methods, for example, the distortion conduit is corrodent or bended. this way give a very good solving way to imperfect structuress Reliability Analysis.

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Lazy Transformation-Based Learning

We introduce a significant improvement for a relatively new machine learning method called Transformation-Based Learning. By applying a Monte Carlo strategy to randomly sample from the space of rules, rather than exhaustively analyzing all possible rules, we drastically reduce the memory and time costs of the algorithm, without compromising accuracy on unseen data. This enables Transformation-Based Learning to apply to a wider range of domains, as it can effectively consider a larger number of different features and feature interactions in the data. In addition, the Monte Carlo improvement decreases the labor demands on the human developer, who no longer needs to develop a minimal set of rule templates to maintain tractability.

This paper,applies the LSTAR model to an empirical study of the Shanghai stock A index.The results show that there is significant characteristic of nonlinear logistic transition in the Shanghai stock A market.The LSTAR model successfully detects the cyclical behavior and makes improvement in forecast performance relative to a linear AR model.

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Are real tongue movements easier to speech read than synthesized?

Speech perception studies with augmented reality displays in talking heads have shown that tongue reading abilities are weak initially, but that subjects become able to extract some information from intra-oral visualizations after a short training session. In this study, we investigate how the nature of the tongue movements influences the results, by comparing synthetic rule-based and actual, measured movements. The subjects were significantly better at perceiving sentences accompanied by real movements, indicating that the current coarticulation model developed for facial movements is not optimal for the tongue.

We focus on the problem of learning semantics from multimedia data associated with broadcast video documents. In this paper we propose to learn semantic concepts from multimodal sources based on style and context detectors, in combination with statistical classier ensembles. As a case study we present our method for detecting the concept of news subject monologues. This approach had the best average precision performance amongst 26 submissions in the 2003 video track of the Text Retrieval Conference benchmark. Experiments were conducted with respect to individual detector contribution, ensemble size, and ranking mechanism. It was found that the combination of detectors is decisive for the nal result, although some detectors might appear useless in isolation. Moreover, by using a probabilistic ranking, in combination with a large classier ensemble, results can be improved even further.

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Cognitive Architectures for Sensory Processing

A Fast Learning Algorithm for Deep Belief Nets

Clinicopathological features and prognosis of mucinous cystic neoplasm with ovarian-type stroma: a multi-institutional study of the Japan pancreas society.

kor_Hang

Alarm prediction in large-scale sensor networks — A case study in railroad

Support-vector networks

Learning internal representations by error propagation

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Scaling Distributed Machine Learning with the Parameter Server

Machine Learning: A Probabilistic Perspective

Pilot study for evidence-based nursing management: improving the levels of job satisfaction, organizational commitment, and intent to leave among nurses in Turkey.

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To Combat Multi-Class Imbalanced Problems by Means of Over-Sampling Techniques

A study of the behavior of several methods for balancing machine learning training data

A multiple resampling method for learning from imbalanced data sets

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A Multiple Expert Approach to the Class Imbalance Problem Using Inverse Random under Sampling

A study of the behavior of several methods for balancing machine learning training data

Design and comparison of CMOS Current Mode Logic latches

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a comparison of resampling techniques to handle the class imbalance problem in machine learning : conversion prediction of spotify users - a case study .

Predicting churn in mobile free-to-play games

Neural Networks for Automated Essay Grading

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Ensembles of Recurrent Neural Networks for Robust Time Series Forecasting

Dropout: a simple way to prevent neural networks from overfitting

Tazarotene gel is safe and effective in the treatment of acne vulgaris: a multicenter, double-blind, vehicle-controlled study.

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A Meta-Transfer Objective for Learning to Disentangle Causal Mechanisms

Understanding Machine Learning: From Theory to Algorithms

automation in agriculture : a study .

kor_Hang

Confidence Bands for ROC Curves

We address the problem of comparing the performance of classifiers. In this paper we study techniques for generating and evaluating bands on ROC curves. Historically this has been done using one-dimensional confidence intervals by freezing one variable - false-positiverate, or threshold on the classification scoring function. Weadapt two prior methods and introduce a new radial sweepmethod to generate confidence bands. We show, throughempirical studies, that the bands are too tight and introducea general optimization methodology for creatingbands that better fit the data, as well as methods for evaluatingconfidence bands. We show empirically that theoptimized confidence bands fit much better and that, usingour new evaluation method, it is possible to gauge therelative fit of different confidence bands.

By labrary analysis of coal seam roof and bottom rock samples which are obtained from Qinshui coalfield,the results are used to regression analyse with well logging visual resistivity and naturalγ,and then the regression equation is obtained,furtherly,using the equation to whole coalfield for forecasting overall distributive tendency of rock intensity.Ithas guidance in mine shaftdesign and safe production.

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A light and electron microscope study of rat abducens nucleus neurons projecting to the cerebellar flocculus.

Injection of horseradish peroxidase (HRP) into the cerebellar flocculus of the rat was employed to identify neurons in the abducens nucleus that project to the flocculus. The number, ultrastructural features and precise localisation of these neurons in the nucleus were examined. They were present bilaterally and represented about 7% of the total neuronal population of each nucleus. They were localised principally in the dorsomedial area of the cranial half of each nucleus and did not display the typical ultrastructural features of motoneurons. It is concluded that the localisation and ultrastructural characteristics of these HRP-positive neurons are useful for distinguishing them from other neuronal populations within the nucleus.

Abstract : These abstracts provide a synopsis of research projects conducted by dental officers enrolled in the first, second, and third year residency programs at the National Naval Dental Center, Bethesda, Maryland, during the academic year 1977-1978. The projects were completed in partial fulfillment of the requirements of the programs. (Author)

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in what lobes are present the association areas of the brain

Damage to the frontal lobe's association areas can cause impairment to mental abilities such as judging, planning and using initiative. The case study conducted on Phineas Gage, showed a dramatic change of personality after an accident damaged his frontal lobes.

Association area. Association areas can be located in the four cortical lobes of the Cerebral cortex. They are primarily involved in processing and integrating information from the senses and relate to higher mental abilities such as [[[thinking]] and reasoning.

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which brain areas are involved in decision making

The Striatum Is a Decision-Making Hub. A February 2015 study, from the Okinawa Institute of Science and Technology (OIST) Graduate University in Japan, found that a key part of the brain involved in decision-making, called the striatum, appears to operate hierarchically within its three different sub-regions.

Location: Frontal and upper area of the cortexFunction: Carries out higher mental processes such as thinking, decision making, and planning. You use your frontal lobe nearly everyday. You use it to make decisions, such as what to eat or drink for breakfast in the morning, as well as for thinking or studying for a test.

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Brain Activity during Simulated Deception: An Event-Related Functional Magnetic Resonance Study

Functional connectivity of the anterior cingulate cortex within the human frontal lobe: a brain-mapping meta-analysis

Spiky follicular mycosis fungoides: a clinicopathologic study of 8 cases

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Analysis of the subcomponents and cortical terminations of the perisylvian superior longitudinal fasciculus: a fiber dissection and DTI tractography study

Perisylvian language networks of the human brain

Segmentation-Based Image Copy-Move Forgery Detection Scheme

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where is amygdala

The amygdala is the name of the collection of nuclei found in the anterior portions of the temporal lobes in the brains of primates (4). The amygdala receives projections from frontal cortex, association cortex, temporal lobe, olfactory system and other parts of the limbic system.

The amygdala is also located in the temporal lobe, which processes emotions and memories. All these functions are important in studying temporal lobe epilepsy since they are affected in several ways during a temporal lobe seizure.

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Connections Can Be Toxic: Terrorist Organizational Factors and the Pursuit of CBRN Terrorism

Despite plentiful scholarship relating to the prospect of terrorists utilizing chemical, biological, radiological, or nuclear (CBRN) weapons, little of this work is both quantitative in nature and global in scope. Leveraging open-source data, this study quantitatively explores factors influencing the terrorist organizational decision to pursue CBRN weapons. The findings suggest that organizations embedded in alliance structures and based in authoritarian countries with relatively strong connections to a globalized world are more likely to seek to develop or acquire CBRN weapons. Contrary to previous qualitative studies, the present study failed to find a significant relationship between CBRN pursuit and religious ideology.

Abstract : The present study shows by example the potential amount of information available in a set of observations of targets where there are known relations between these targets. Known relations between objects significantly reduces the set of possible explanations behind a set of observations. The application here is classification of military targets. Cost functions and interaction with decision makers extend the feasibility of the present approach meaningfully to treat many observations and possible targets behind these.

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New Japan leader maps out robust policy

Newly elected Prime Minister Shinzo Abe on Friday pledged to start debate on revising Japan's pacifist constitution, study a collective defense system with the United States and reverse the country's fiscal troubles.

PARIS - French President Jacques Chirac told his government to push for the Paris Club of creditor nations to put a moratorium on debt payments owed by countries hit by tsunamis in southeast Asia.

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a fascinating look at the dark underbelly of the military

Singer is renowned as an expert in the privatization of the military, and has appeared regularly on major news programs like CNN, CNBC, and Nightline. He documents how private companies have taken on an increasingly large role in military operations and support, both on the battlefield and in logistical and support roles, and his study raises serious questions about the conflicts of interest that may occur when military operations become enmeshed in politics and profit motives.

This is a page turner, and a wealth of information that the lame stream media just will not tell you. WHY? Because it doesn't fit the narrative they are trying to spin. This book gives you the ammunition to keep your ammunition.

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Incompletely specified (Mealy type) sequential machines and their generalizations to infinite machines are discussed. Convenient algebraic techniques for the study of such machines are introduced. These techniques are based on binary relations and on an extension of the usual concept of homomorphism to multivalued mappings. The first part of the paper gives a short, unified introduction to the algebraic theory of partial automata. The second part unifies and extends the algebraic approach to generalized cascade decompositions which combine conventional decomposition techniques with state-splitting procedures. The relationship between such generalized decompositions and state reductions of automata is investigated.

The object of this paper is to study the realization of a sequential machine from several smaller machines. The basic tools in this investigation are the partitions with the substitution property and the partition pairs. It is shown that to every (loop-free) realization of a sequential machine from n smaller machines corresponds a set of n partitions with the substitution property whose product is the zero partition. Conversely, it is shown that to every such set of n partitions corresponds a realization of the given sequential machine from n smaller machines. The natural ordering of these partitions is reflected in the information flow between the corresponding component machines and the algebraic operations defined between these partitions corresponding to the realization, govern the modifications of this realization. Finally, it is shown how the amount of information flowing between the component machines in a realization can be studied by means of partition pairs.

Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights.

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The cooperative nonlinear scattering processes between two resonator modes stimulated by the excited atomic beam, ::: it is studied. It is demonstrated that these collective scattering phenomena between the Stokes and Anti-Stokes ::: resonator modes take place due to energy transfer between these fields. The quantum proprieties of Stokes and Anti- ::: Stokes fluctuations of the photon numbers have been found. The correlation functions between these fields are ::: expressed through the lasing parameters of the cavity. The experimental scheme of realization of such collective ::: amplification of Stokes (Anti-Stokes) of photon number is proposed.

We study the performance and limitations of a coherent interface between collective atomic states and single photons. A quantized spin-wave excitation of an atomic sample inside an optical resonator is prepared probabilistically, stored, and adiabatically converted on demand into a sub-Poissonian photonic excitation of the resonator mode. The measured peak single-quantum conversion efficiency of $\ensuremath{\chi}=0.84(11)$ and its dependence on various parameters are well described by a simple model of the mode geometry and multilevel atomic structure, pointing the way towards implementing high-performance stationary single-photon sources.

The antithesis of Specker's theorem states that every sequence eventually hounded away from each point of [0,1] is eventually bounded away from [0,1]. We show constructively (that is, with intuitionistic logic) that this is equivalent to a version of the fan theorem.

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This paper starts with an intuitive notion of representational spaces, which is intended to provide an improved version of Kuhn's concept of paradigms. It then proceeds to study the following topics in terms of this new notion: incommensurability, paradigm change, explanation of anomalies, explanation of regularities, explanation of irregularities, and physical necessity. In the course of the investigation, "representational space" gets clarified and defined. It is envisaged that this new concept should throw light on many issues in the philosophy of science.

In scientific explanations, the explanans theory is sometimes incommensurable with the explanandum empirical data. How is this possible, especially when the explanation is deductive in nature? This paper attempts to solve the puzzle without relying on any particular theory of reference. For us, it is rather obvious that the geometric idea of projection plays a key role in Kepler’s explanation of Tycho Brahe’s empirical data. We discover that a similar mechanism operates in theoretic explanations in general. In short, all theoretic explanations are “projective” explanations. If so, there should be no logical reason why explanans theories cannot be incommensurable with explanandum data. For illustration, we analyse Einstein’s explanation of the results of the Michelson–Morley experiment in some detail.

The existence of a winning strategy in the well-known Banach-Mazur game in a completely regular topological space X is proved to be equivalent to the generic existence of solutions of optimization problems generated by continuous functions in X

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The study of uniformly r.e. classes of r.e. sets is a classical topic in recursion theory. In this context the problem to characterize the r.e. classes admitting a recursive enumeration without repetition or a one-one numbering had attracted a great deal of research effort. In 1958, Friedberg [F58], utilizing his insight into the "priority method", proved that the class of all r.e. sets and the class of all partial recursive functions can be enumerated without repetition. Pour-El [P60] rose the question if this could be done for every r.e. class, and answered it negatively [PP65] : Let K be the halting problem (i I

Generalized numberings are an extension of Ershov's notion of numbering, based on partial combinatory algebra (pca) instead of the natural numbers. We study various algebraic properties of generalized numberings, relating properties of the numbering to properties of the pca. As in the lambda calculus, extensionality is a key notion here.

generating families in the restricted three body problem is available in our book collection an online access to it is set as public so you can download it instantly. Our book servers saves in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the generating families in the restricted three body problem is universally compatible with any devices to read.

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Steel strip to be used in the manufacture of carbonated beverage packs is treated to incorporate sulfur into its surface layers by diffusion during the annealing cycle that is normally conducted after cold rolling and cleaning operations. The steel is first treated with an aqueous sulfide solution, dried and then heated in a conventional annealing furnace.

The 1990 papers of Cohen and Levesque (C&L) on rational interaction have been most influential. Their approach is based on a logical framework integrating the concepts of belief, action, time, and choice. On top of these they define notions of achievement goal, persistent goal, and intention. ::: ::: We here revisit their approach in a simplified, propositional logic, for which we give complete axiomatization. ::: ::: Within that logic we study the definition of achievement goals, refining C&L's analysis. Our analysis allows us to identify the conditions under which achievement goals persist. We then discuss the C&L definition of intention as well as a variant that has been proposed by Sadek and Bretier. We argue that both are too strong and propose a weakened version.

We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero.

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Deciding the inequivalence of context-free grammars with 1-letter terminal alphabet is σp-2--complete

Abstract This paper deals with the complexity of context-free grammars with 1-letter terminal alphabet. We study the complexity of the membership problem and the inequivalence problem. We show that the first problem is NP-complete and the second one is Σ P 2 -complete with respect to log-space reduction. The second result also implies that the inequivalence problem is in P space , solving an open problem stated by Hunt, Rosenkrantz and Szymanski (1976).

We describe some connections, via composition, between two functional spaces: the space of (sub)critical branching mechanisms and the space of Bernstein functions. The functions ${\bf e}_\alpha: x\to x^{\alpha}$ where $x\geq0$ and $0<\alpha\leq 1/2$, and in particular the critical parameter $\alpha=1/2$, play a distinguished role.

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T09-O-01 Unconsummated marriages: a separate clinical entity or simply a consequence of single sexual dysfunctions?

Starting from a rewiew of international literature about unconsummated marriages, our group found a big discrepance in the meaning that researchers gave to this expression. Urologists pointed up that the main causes were related to male defaillance in reaching and mantaining an adequate erection or controlling the ejaculatory reflex. Gynaecologists, on the other side, remarked vaginismus as the leader factor substaining the impossible coitus among couples. Definitions of unconsummated marriages are confused, but also in the field of therapy interventions we have found a lot of different options suggested. The proposal of considering unconsummated marriages as a separate and a specifical clinical entity accompanied by a specific diagnostic classification is presented and discussed.

We continue the study of bottom-up unranked tree automata with equality and ::: disequality constraints between direct subtrees. In particular, we show that ::: the emptiness problem for the nondeterministic automata is decidable. In ::: addition, we show that the universality problem, in contrast, is undecidable.

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Analysis on the flexible employment policy and study on the sharing model for faculty

this paper analyzes the system conflicts of flexible employment policy for faculty,such as the conflicting requirements for host and guest,conflicting on concurrent requirements,conflicting requirements for results sharing.The cause for the distance between theory and practice on flexible employment policy is illustrated.The more feasible personal power sharing models are detailed,such as the model of credit hour sharing and retaining retirees over multi-universities,model of Internet-based courseware sharing,and the project-driven cooperative research.

I n this note we generalize the results of S.Kumar and B.Fisher [S.Kumar and B.Fisher, A common fixed point theorem in fuzzy metric space using property (E.A.) and implicit relation, Thai J. of Mathematics, Vol 8(2010) Number: 439-446] and we generalize the results by using weakly compatible mappings along with the property (CLRg).We also demonstrate an example in support our main result.

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Perpetuality for Full and Safe Composition (in a Constructive Setting)

We study perpetuality in calculi with explicit substitutions having full composition. A simple perpetual strategy is used to define strongly normalising terms inductively. This gives a simple argument to show preservation of β-strong normalisation as well as strong normalisation for typed terms. Particularly, the strong normalisation proof is based on implicit substitution rather than explicit substitution, so that it turns out to be modular w.r.t. the well-known proofs for typed lambda-calculus. All the proofs we develop are constructive.

By studying relative literature and questionnaires,the authors studied the teaching mode,course system,training modes,teaching contents of continual education of the high school P.E. masters. Countermeasures were put forth as to the P.E. continual education,teaching mode and teaching contents.

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SIGACT News Complexity Theory Column 10

We survey techniques and results obtained over the past thirty years for space-bounded probabilistic computation. We use a common framework for the study of both finite-state automata and logarithmic-space-bounded Turing machines. In particular, we present recent advances on space-efficient deterministic simulation of probabilistic automata.

We give an almost complete classification of empty lattice simplices in dimension 4 using the conjectural results of Mori-Morrison-Morrison, later proved by Sankaran and Bober. In particular, all of these simplices correspond to cyclic quotient singularities, and all but finitely many of them have width bounded by 2.

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Certificateless universal designated multi-verifiers sequential multi-signature scheme

Sequential multi-signature schemes were based on discrete logarithm problem or identity,and existed certificate management and key escrow problems.Universal designated multi-verifiers signature scheme allowed a signature holder to designate a set of signature verifiers,in such a way that only designated verifiers could verify the efficiency of the signature.Combining certificateless signature with universal designated multi-verifiers signature,certificateless universal designated multi-verifiers sequential multi-signature scheme and its safety requirement were proposed.Security proofs based on the random oracle model indicate that this scheme can resist the adaptively select of message attack,and its security relies on the BDH assumption.

We continue the study of bottom-up unranked tree automata with equality and ::: disequality constraints between direct subtrees. In particular, we show that ::: the emptiness problem for the nondeterministic automata is decidable. In ::: addition, we show that the universality problem, in contrast, is undecidable.

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Fragments of Arithmetic and true sentences

By a theorem of R. Kaye, J. Paris and C. Dimitracopoulos, the class of the Πn+1-sentences true in the standard model is the only (up to deductive equivalence) consistent Πn+1-theory which extends the scheme of induction for parameter free Πn+1-formulas. Motivated by this result, we present a systematic study of extensions of bounded quantifier complexity of fragments of first-order Peano Arithmetic. Here, we improve that result and show that this property describes a general phenomenon valid for parameter free schemes. As a consequence, we obtain results on the quantifier complexity, (non)finite axiomatizability and relative strength of schemes for Δn+1-formulas. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Phonological questions of the sort ‘Is segment or feature [x] a surface-phonetic event or a property of the underlying mental representation?’ may be answered in some cases by considering the duration

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Preliminary Study and Its Application of Navigation Grading Standard Planning of the Tributary Channel in TGP Reservoir Area

The navigation condition of tributaries at TGP reservoir area has improved essentially but it still lacks navigation grading standard,for the normal grading standard of inland river takes no consideration of the effect of reservoir on the tributary channel navigation.So the normal grading standard can't be applied to determine the technical grade of tributary channel.Taking Meixi River as the typical tributary,the preliminary exploration of grading the tributaries navigation technically after the accomplishment of TGP reservoir is carried out;the exploration is discussed from various aspects,such as flow condition,channel dimension and the navigation guarantee rate.The proposed standard is applied to Meixi River,and its channel navigation standard after the accomplishment of TGP is obtained,which can be taken as the reference for the navigation grading study of TGP reservoir and navigation tributaries of similar reservoirs.

Abstract This paper extends the results of an earlier paper by the author (this journal, 1991). New subsystems of the combinatory logic TRC shown in that paper to be equivalent to NF are introduced; these systems are analogous to subsystems of NF with predicativity restrictions on set comprehension introduced and shown to be consistent by Crabbe. For one of these systems, an exact equivalence in consistency strength and expressive power with the analogous subsystem of NF is established.

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A modal logic internalizing normal proofs

In the proof-theoretic study of logic, the notion of normal proof has been understood and investigated as a metalogical property. Usually we formulate a system of logic, identify a class of proofs as normal proofs, and show that every proof in the system reduces to a corresponding normal proof. This paper develops a system of modal logic that is capable of expressing the notion of normal proof within the system itself, thereby making normal proofs an inherent property of the logic. Using a modality @? to express the existence of a normal proof, the system provides a means for both recognizing and manipulating its own normal proofs. We develop the system as a sequent calculus with the implication connective @? and the modality @?, and prove the cut elimination theorem. From the sequent calculus, we derive two equivalent natural deduction systems.

Let X and Y be two inflnite dimensional real or complex Banach spaces. In this note we determine the forms of surjective additive maps ` : L(X) ! L(Y ) preserving the kernel's dimension or the range's codimension. As consequence, we establish that ` : L(X) ! L(X) preserves the kernel (respectively, the range) if and only if there exists an invertible operator A 2 L(X) such that `(T) = AT (respectively, `(T) = TA) for all T 2 L(X).

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Whst's the relationship between these two theorems? When studying Computational Logic last year, we had to prove a theorem called "Compactness Theorem" ("Teorema de Compacidad in Spanish) which states that a set of formulae $\Gamma$ is satisfiable if and only if every finite subset of $\Gamma$ is satisfiable I am now going over Rudin's Principles of Mathematical Analysis to "master the basics" and came upon a theorem that states that for a collection of compact sets $\lbrace K_\alpha \rbrace$ if the intersection of every finite subcollection is nonempty, then the intersection of the whole collection is nonempty. These two theorems seem to state extremely similar things, so I was wondering how they're connected

Why is compactness in logic called compactness? In logic, a semantics is said to be compact iff if every finite subset of a set of sentences has a model, then so to does the entire set. Most logic texts either don't explain the terminology, or allude to the topological property of compactness. I see an analogy as, given a topological space X and a subset of it S, S is compact iff for every open cover of S, there is a finite subcover of S. But, it doesn't seem strong enough to justify the terminology. Is there more to the choice of the terminology in logic than this analogy?

Which of the following sets are compact in $\mathbb{M}_n(\mathbb{R})$[NBHM_PhD Screening Test-2013, Topology] Which of the following sets are compact in $\mathbb{M}_n(\mathbb{R})$ (a) The set of all upper triangular matrices all of whose eigenvalues satisfy $|\lambda|≤2 $. (b) The set of all real symmetric matrices all of whose eigenvalues satisfy $|\lambda|≤2 $. (c) The set of all diagonalizable matrices all of whose eigenvalues satisfy $|\lambda|≤2 $. (a) &amp; (c) are not true. But I am not sure about (b).can anybody help me please.

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The problem of cation distribution in the layered tetradymite structure compound SnSb2Te4 is not completely resolved by means of classical X-ray or electron diffraction studies. Mossbauer absorption measurements, reported here, give experimental evidence for a symmetrical and distorted structural environment around the Sn and Sb atoms, respectively. Moreover, an ab initio free-parameter total-energy calculation reproduces in the Hellmann-Faynman scheme the forces acting on the ions which are equal to zero in the ordered phase. The results of the combined experimental and theoretical study indicate that the metal atoms are not arranged in a random sequence.

We report the discovery of a new superconductor from phase change materials SnSb2Te4. Single crystals of SnSb2Te4 were grown using a conventional melting-growth method. The sample resistance under pressure was measured using an originally designed diamond anvil cell with boron-doped diamond electrodes. The pressure dependence of the resistance has been measured up to 32.6 GPa. The superconducting transition of SnSb2Te4 appeared at 2.1 K(Tconset) under 8.1 GPa, which was further increased with applied pressure to a maximum onset transition temperature 7.4K under 32.6 GPa.

We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero.

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Laser shortpulse heating of metallic substrates requires microscopic examination of the energy transport in the irradiated region. This is because of low specific heat capacity of electrons, which results in nonequilibrium temperature distribution in this region. In the present study, laser shortpulse heating of gold with variable properties is considered. Nonequilibrium energy transport is modelled using an electron kinetic theory approach. The resulting integro-differential equations are reduced to partial differential equation using a Fourier transform method. The resulting differential equation is further transformed into two differential equations similar to those given in the two-equation model. The coefficients of the differential equations are correlated. It is found that variable properties results in higher lattice site and lower electron temperatures as compared to those corresponding to constant properties case.

Laser short-pulse heating of silicon film is considered and effect of the spatial distribution of absorption coefficient on electron and lattice site temperatures is examined. The high absorption region in the silicon film resembles the presence of absorbed particles in this region, since the absorption coefficient of silicon at the wavelength of the laser irradiation is significantly low. Electron and lattice temperatures are predicted using the electron kinetic theory approach. Three different spatial distributions of absorption coefficient are considered in the simulations. It is found that electron temperature attains the highest for the case of high absorption coefficient located in the surface region of the silicon film. As the high absorption region moves inside the film, electron and lattice temperatures become low.

We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero.

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Long-range interparticle interactions are revealed in extremely dilute thermal atomic ensembles using highly sensitive nonlinear femtosecond spectroscopy. Delocalized excitons are detected in the atomic systems at particle densities where the mean interatomic distance (>10 μm) is much greater than the laser wavelength and multi-particle coherences should destructively interfere over the ensemble average. With a combined experimental and theoretical analysis, we identify an effective interaction mechanism, presumably of dipolar nature, as the origin of the excitonic signals. Our study implies that even in highly-dilute thermal atom ensembles, significant transition dipole–dipole interaction networks may form that require advanced modeling beyond the nearest neighbor approximation to quantitatively capture the details of their many-body properties.

Part I: Spectroscopy. 1: Spectroscopy of molecular beams: an overview. 2: Magnetic and electric resonance spectroscopy. 3: Beam-maser spectroscopy. 4: Quantum amplifiers and oscillators. 5: Metrology with molecular beams. 6: Infrared laser spectroscopy. 7: Visible and UV spectroscopy: physical aspects. 8: Photofragment spectroscopy. 9: Fourier-transform microwave spectroscopy. 10: Fourier-transform methods: infrared. Part II: Surface Scattering. 11: General principles and methods. 12: Elastic scattering of atoms. 13: Rotational inelastic scattering. 14: Single phonon inelastic helium scattering. 15: Multiple phonon inelastic scattering. 16: Scattering from disordered surfaces. 17: Reactive scattering

We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero.

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Analysis of the Application of Deferred Income Tax under the Balance Sheet Method

From 1983,the income tax accounting which was the tax payable method to the current enterprise accounting standards of the balance sheet method in China has experienced several times. From the " book value" "tax base" concept to study of " temporary difference in tax payment" and " the temporary difference" deeply,this article analyzes the " income tax expense" " income tax payable" and some other difficult issues,and provides accounting ideas to the accountant.

Preface Bose-Einstein Condensation in Nonlinear System New Aspects of Relaxation Processes in Cryogenic Solids Induction Transformer Coupled Discharges: Investigation & Application P-Type InGaAs/AlGaAs Quantum Well Structures for Infrared Photodetection A D-3He Spherical Tokamak Reactor with the Plasma Current Ramp-Up by Vertical Field 5-Dimension Space-Time Field Theory & Realization of Matter Chemical Physics of Phonons & Superconductivity: A Heuristic Approach Description of the Ultraslow Light Phenomenon in Atomic Bose Condensates in the Framework of the Microscopic Approach Energy Decay Mechanism of Quantum Grid Turbulence in He II Below 1 K Dark Matter Haloes as Fruits of Merger Trees in a CDM Garden Application of GEANT4 Code in Gamma Irradiation Processing Stochastic Dynamic Systems with Long-Range Correlations: Basic Notions & Applications Index.

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Temperature profiles in Hamiltonian heat conduction

We study heat transport in the context of Hamiltonian and related stochastic models with nearest-neighbor coupling, and derive a universal law for the temperature profiles of a large class of such models. This law contains a parameter α, and is linear only when α = 1. The value of α depends on energy-exchange mechanisms, including the range of motion of tracer particles and their times of flight.

Abstract We performed a parametric study of the fine (fs) and hyperfine structure (hfs) for the even parity configurations of ionized tantalum (Ta II) using improved experimental fs and hfs data for 88 levels. A multi-configuration fitting procedure was performed for 47 configurations taking into account second-order perturbation theory including the effects of closed to open shell excitations. The fs and hfs parameters were calculated. Predicted values of level energies up to 86 000 cm − 1 are given, as well as g J -Lande factors, magnetic dipole and electric quadrupole hyperfine structure constants A and B , when no experimental values are available.

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A simple strategy for quantitative analysis in the network optimization method

In recent years,as one of the national only large local networks,mobile communication networks in Shanghai China was becoming more and more complex.There existed some differences between the perception of business clients and the operators' network indicators in the voice services.In order to improve the customer experience,the network synthesis quality optimization was necessary.After the study of optimization goals and principles,a simple method of quantitative analysis was proposed.It defined a series of algorithms used quantitative comparative analysis of the network scenes,looked for the balance of safety,cost and capacity.Finally,a case of the existing network was selected to show that the optimal strategy was effective,repeatable,measurable and evaluable.Specification design and the relationship between optimization strategy and daily production remain to be explored.

We study the pseudogap Anderson model as a prototype system for critical Kondo destruction. We obtain finite-temperature (T) scaling functions near its quantum critical point, using a continuous-time quantum Monte Carlo method and also considering a dynamical large-N limit. We are able to determine the behavior of the scaling functions in the typically-difficult-to-access quantum-relaxational regime (hbar w < k_B T), and conclude that the relaxation rates for both the spin and single-particle excitations are linear in temperature. We discuss the implications of these results for the quantum critical phenomena in heavy fermion metals.

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Pseudopotential calculations of Cd1−xZnxTe: Energy gaps and dielectric constants

Abstract In this paper we present a study of the energy gaps, dielectric constants and their composition dependence in zinc-blende Cd 1− x Zn x Te over the entire composition range ( x from 0 to 1) at room temperature using pseudopotential formalism under a modified virtual crystal approximation which takes into account the effect of compositional disorder. It is showed that the theoretical model must include disorder effects in order to get a meaningful agreement with experiment. The theoretical expression which describes the compositional dependence of the fundamental energy gap is in good agreement with that observed by Tobin et al. [J. Electron. Mater. 24 (1995) 697].

We mainly explore the linear algebraic structure like SU(2) or SU(1,1) of the shift operators for some one-dimensional exactly solvable potentials in this paper. During such process, a set of method based on original diagonalizing technique is presented to construct those suitable operator elements, J0, J_\pm that satisfy SU(2) or SU(1,1) algebra. At last, the similarity between radial problem and one-dimensional potentials encourages us to deal with the radial problem in the same way.

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Size affected dislocation activity in crystals: Advanced surface and grain boundary conditions

Abstract Extended crystal plasticity theories are well established to study size-dependent hardening of metals. Surface and inner grain boundary conditions play a significant role for crystals at small scales as they affect the dislocation activity and, hence, alter strength and strain hardening behavior. Conventional micro boundary conditions, i.e., microhard and microfree, are unable to capture the underlying physics as they describe ideal and over-simplified surface/interface conditions. In this work, advanced boundary conditions for gradient extended crystal plasticity are introduced to map realistic conditions at external surfaces, interphases, or grain boundaries. They relate the magnitude of plastic slip to surface defect density and slip directions with respect to the surface normal. Characteristic features are highlighted, including the effect of surface yielding and size dependent surface strengthening.

We review recent developments in quantum scattering from mesoscopic systems. Various spatial geometries whose closed analogues show diffusive, localized or critical behaviour are considered. These are the features that cannot be described by the universal random matrix theory results. Instead, one has to go beyond this approximation and incorporate them in a non-perturbative way. Here, we pay particular attention to the traces of these non-universal characteristics, in the distribution of the Wigner delay times and resonance widths. The former quantity captures time-dependent aspects of quantum scattering while the latter is associated with the poles of the scattering matrix.

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