41489302
Integrated Optical Routing Topology for MicroPhotonic Switches
In this paper, an integrated optical beam router for MicroPhotonic switching is described. The router employs a piecewise linear optic that steers and couples optical collimated beams to optical fiber ports with minimum loss. Experimental results show that for a 3-port MicroPhotonic switch, fiber-to-fiber optical coupling loss less than 0.5 dB and insertion loss uniformity better than 0.25 dB can be achieved, and the tolerance to fluctuations in design parameters is practical.
18979975
Integrated MicroPhotonic wideband RF interference mitigation filter
MicroPhotonic broadband RF signal processors utilize true-time-delay methods to perform processing functions that cannot be achieved by conventional electronic methods. In addition to their small physical size and immunity to EMI, Photonic signal processors offer the possibility of delaying broadband RF signals with almost no loss. In this paper, we present a novel MicroPhotonic structure that integrates a photoreceiver array, a Vertical Cavity Surface Emitting Laser (VCSEL) array, and a multi-cavity optical substrate to realize a low-cost adaptive wideband RF interference mitigation filter. Results show that for a 64-cavity MicroPhotonic structure, high-resolution, tunable interference mitigation filter with a shape factor as low as 2 and passband ripples less than 0.25 dB can be realised.
17941589
Novel integrated optical router for microphotonic switching
In this paper, a novel integrated optical beam router for microphotonic switching is presented. The router uses a piecewise linear optic that steers and couples optical collimated beams to optical fibre ports with minimum loss and excellent tolerance to fluctuations in design parameters. Experimental results show that for a 1/spl times/2 MicroPhotonic switch, fibre-to-fibre optical coupling loss less than 1.05 dB and insertion loss uniformity better than 0.2 dB can be achieved, and the measured loss penalty for changes /spl plusmn/0.5 mm in component position is negligible.
1450237
An Improved Constructive Neural Network Ensemble Approach to Medical Diagnoses
Neural networks have played an important role in intelligent medical diagnoses. This paper presents an Improved Constructive Neural Network Ensemble (ICNNE) approach to three medical diagnosis problems. New initial structure of the ensemble, new freezing criterion, and a different error function are presented. Experiment results show that our ICNNE approach performed better for most problems.
1885677
Learning nonlinear multiregression networks based on evolutionary computation
This paper describes a novel knowledge discovery and data mining framework dealing with nonlinear interactions among domain attributes. Our network-based model provides an effective and efficient reasoning procedure to perform prediction and decision making. Unlike many existing paradigms based on linear models, the attribute relationship in our framework is represented by nonlinear nonnegative multiregressions based on the Choquet integral. This kind of multiregression is able to model a rich set of nonlinear interactions directly. Our framework involves two layers. The outer layer is a network structure consisting of network elements as its components, while the inner layer is concerned with a particular network element modeled by Choquet integrals. We develop a fast double optimization algorithm (FDOA) for learning the multiregression coefficients of a single network element. Using this local learning component and multiregression-residual-cost evolutionary programming (MRCEP), we propose a global learning algorithm, called MRCEP-FDOA, for discovering the network structures and their elements from databases. We have conducted a series of experiments to assess the effectiveness of our algorithm and investigate the performance under different parameter combinations, as well as sizes of the training data sets. The empirical results demonstrate that our framework can successfully discover the target network structure and the regression coefficients.
2647804
Extended DBP for (m, k)-Firm Based QoS
In this paper, an extended DBP (E_DBP) scheme is studied for (m,k)-firm constraint. The basic idea of the proposed algorithm takes into account the distance to exit a failure state, which is a symmetrical notion of distance to fall into a failure state in DBP. Quality of Service (QoS) in terms of dynamic failure and delay is evaluated. Simulation results reveal the effectiveness of E_DBP to provide better QoS.
33190301
Internet based manufacturing database
Internet Based Manufacturing Database by Shashidhar Iddamsetty Dr Zhiyong Wang, Examination Committee Chair Assistant Professor of Mechanical Engineering University of Nevada, Las Vegas This thesis presents the concept of using distributive databases and World Wide Web as a tool for deploying the Internet based Manufacturing database for insert selection. The rapid phase of development of Internet and its wide usage in the areas of business and Engineering has opened a wide spectrum for the areas of research. This tool is useful in the selection of the cutting inserts for the various machining processes based on the conditions, which a user provides. The Internet based System for Inserts and Parameter selection (ISIPS) has two research databases connected to the Internet, which provides the user with the required machining parameters for Turning or Milling operations. The recommendations provided by this system consist o f the insert types along with the dimensions and the machining parameters feed and speed of cutting. This system has been successfully deployed at University of Nevada, Las Vegas and it can be accessed from the Internet at http://webcutting.nscee.edu.
12805492
PFB-Integrals and PFA-Integrals with Respect to Monotone Set Functions
A pair of new integrals, a PFB-integral and a PFA-integral, are introduced. Given a measurable space, these integrals are defined for nonnegative functions with respect to monotone set functions, and they are generalizations of both the Lebesgue integral and the fuzzy integral. Some primary properties of the PFB-integral and PFA-integral are discussed and an inequality between them is established in this paper.