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Articles 9751 - 9780 of 12097
Full-Text Articles in Entire DC Network
Subgrade Resilient Modulus For Pavement Design And Evaluation, Woojin Lee, Nihal Chand Bohra, A. G. Altschaeffl, Thomas D. White
Subgrade Resilient Modulus For Pavement Design And Evaluation, Woojin Lee, Nihal Chand Bohra, A. G. Altschaeffl, Thomas D. White
JTRP Technical Reports
No abstract provided.
Energy Storage For Power Systems With Rapidly Changing Loads, Patrick G. Lyons
Energy Storage For Power Systems With Rapidly Changing Loads, Patrick G. Lyons
Department of Electrical and Computer Engineering Technical Reports
In areas with rapidly changing loads of large magnitude, utility companies often experience large deviations in frequency and area control error. Inadvertent tie-line power flow also occurs. The purpose of this research is to examine the effects a large scale energy storage device has on the system response to a rapidly changing load. Two control areas connected by a tie-line are modelled and simulations are performed to determine the response to a step change in load and also to a five-stand rolling mill load. For each type of load, three cases are studied: no energy storage in the system, a …
A Digital Implementation Of A Three-Layered Ann Module, Ottilia Mccoy, Okan K. Ersoy
A Digital Implementation Of A Three-Layered Ann Module, Ottilia Mccoy, Okan K. Ersoy
Department of Electrical and Computer Engineering Technical Reports
An Artificial Neural Network (ANN) Module has been designed having capabilities of onboard supervised backpropagation learning. Several modules are comected through an error detection scheme. The Artificial Neural Network Module is a three-layered network comprising twenty-four digital nodes that can be fully connected. The module allows full user configurable options of connections between nodes in adjacent layers, ,activation or deactivation of any node, learning high precision floating point user specified input initial weights, and user choice of linear or nonlinear activation hnction for the input, hidden, and output nodes. In addition to the Artificial Neural Network Module implementation, a circuit …
Project Modeling For Discrete Event Simulation By Neural Networks And Fuzzy Associative Memories, O. E. Velipasaoglu, O. K. Ersoy, T. Nienhaus
Project Modeling For Discrete Event Simulation By Neural Networks And Fuzzy Associative Memories, O. E. Velipasaoglu, O. K. Ersoy, T. Nienhaus
Department of Electrical and Computer Engineering Technical Reports
The simulation method is used to obtain approximate solutions to operations planning problems. Its power comes from the ability to model complex systems effectively. This property makes simulation preferable in practice over programming methods which provide exact solutions but are limited in the range of problems they can be applied. Flexibility of simulation modeling is desirable especially in resource constrained operations planning problems. When internal decision mechanisms like heuristic methods are added to the scope of simulation, performance can be enhanced significantly. As a result of application of neural networks and fuzzy associative memories to operations planning through the context …
Losses In Electric Power Systems, E. Benedict, T. Collins, D. Gotham, S. Hoffman, D. Karipides, S. Pekarek, R. Ramabhadran
Losses In Electric Power Systems, E. Benedict, T. Collins, D. Gotham, S. Hoffman, D. Karipides, S. Pekarek, R. Ramabhadran
Department of Electrical and Computer Engineering Technical Reports
This report concerns losses in power systems. The report was assembled by seven authors in EE 532 class at Purdue University in December, 1992. The work was part of a class project on losses . All aspects of losses are discussed from the transmission system through utilization stages. High efficiency motors and lighting are also considered . The students participating in this project also videotaped presentations on power system losses .
A Theory Of Global Concurrency Control In Multidatabase Systems, Aidong Zhang, Ahmed K. Elmagarmid
A Theory Of Global Concurrency Control In Multidatabase Systems, Aidong Zhang, Ahmed K. Elmagarmid
Department of Computer Science Technical Reports
No abstract provided.
Oxidative Mechanisms In Arterial Distension Injury: Observations Relevant To Restenosis After Angioplasty, Charles F. Babbs, Yuan Zhong
Oxidative Mechanisms In Arterial Distension Injury: Observations Relevant To Restenosis After Angioplasty, Charles F. Babbs, Yuan Zhong
Weldon School of Biomedical Engineering Faculty Working Papers
Background: To explore the hypothesis that tissue iron and reactive oxygen species, including superoxide (O2), mediate acute inflammatory and late hyperplastic responses to vascular injury, we studied experimental overdistension of normal carotid and femoral arteries in dogs. Experimental design: Arterial segments isolated in situ were distended with Ringer solution at 2 atmospheres pressure. In initial experiments the arteries were excised immediately after distension and immersed in diaminobenzidine solutions containing Mn++ ions to initiate histochemical reactions for O2. In other experiments distended arterial segments were reperfused with arterial blood in the presence or absence of the iron chelator, deferoxamine, or the …
On Elastic Nets And Correspondence In Motion With Homogeneous Deformation, Anupam Joshi, Chia-Hoang Lee
On Elastic Nets And Correspondence In Motion With Homogeneous Deformation, Anupam Joshi, Chia-Hoang Lee
Department of Computer Science Technical Reports
No abstract provided.
Optimal Parametric Search Algorithms In Trees I: Tree Partitioning, Greg N. Frederickson
Optimal Parametric Search Algorithms In Trees I: Tree Partitioning, Greg N. Frederickson
Department of Computer Science Technical Reports
No abstract provided.
S-Demon User's Manual, M. A. Stettler, A. Das, M. S. Lundstrom
S-Demon User's Manual, M. A. Stettler, A. Das, M. S. Lundstrom
Department of Electrical and Computer Engineering Technical Reports
S-DEMON (Version 2.0) is a computer program that simulates electron transport through Silicon DEvices by the MONte Carlo technique. The program will print and plot histograms of the carrier distribution function at different positions as well as other quantities of interest such as the average velocity, carrier density, and energy. For a more thorough discussion of the theoretical basis and the implementatioin of S-DEMON, the user is directed to the references [I-71. Material parameters taken from reference 171. This text begins with general notes on installing and running S-DEMON. Next, a description of the input deck format is given, followed …
On-Line Serial And Parallel String Searching, Alberto Apostolico
On-Line Serial And Parallel String Searching, Alberto Apostolico
Department of Computer Science Technical Reports
No abstract provided.
Modeling Contacts In A Physically Based Simulation, William J. Bouma, George Vanĕček
Modeling Contacts In A Physically Based Simulation, William J. Bouma, George Vanĕček
Department of Computer Science Technical Reports
No abstract provided.
On Correspondence, Line Tokens And Missing Tokens, Chia-Hoang Lee, Anupam Joshi
On Correspondence, Line Tokens And Missing Tokens, Chia-Hoang Lee, Anupam Joshi
Department of Computer Science Technical Reports
No abstract provided.
Time Complexity Of A Path-Formulated Optimal Routing Algorithm, John K. Antonio, Wei K. Tsai, G. M. Huang
Time Complexity Of A Path-Formulated Optimal Routing Algorithm, John K. Antonio, Wei K. Tsai, G. M. Huang
Department of Electrical and Computer Engineering Technical Reports
A detailed analysis of convergence rate is presented for an iterative path formulated optimal routing algorithm. The primary objective is to quantify, analytically, how the convergence rate changes as the number of nodes in the underlying graph increases. The analysis is motivated by a particular path formulated gradient projection algorithm that has demonstrated excellent convergence rate properties through extensive numerical studies. In particular, the empirical data suggests that the number of iterations required for convergence to within a small fraction of the optimal cost is relatively independent of the number of nodes. Deriving a correspondingly tight analytical bound for the …
The Visual Diagnosis On The Numerical Calculation Of Pde Problems, Yukio Umetani
The Visual Diagnosis On The Numerical Calculation Of Pde Problems, Yukio Umetani
Department of Computer Science Technical Reports
No abstract provided.
Improving Gl Surface Joins By Using A Composite Patch, Jörg Peters
Improving Gl Surface Joins By Using A Composite Patch, Jörg Peters
Department of Computer Science Technical Reports
No abstract provided.
Efficient Techniques For Simulating Service Disciplines, Janche Sang, Ke-Hsiung Chung, Vernon J. Rego
Efficient Techniques For Simulating Service Disciplines, Janche Sang, Ke-Hsiung Chung, Vernon J. Rego
Department of Computer Science Technical Reports
No abstract provided.
Experiments With Program Unification On The Cray Y-Mp, Ling-Yu Chuang, Vernon J. Rego, Aditya P. Mathur
Experiments With Program Unification On The Cray Y-Mp, Ling-Yu Chuang, Vernon J. Rego, Aditya P. Mathur
Department of Computer Science Technical Reports
No abstract provided.
A New Family Of Preconditioners For Domain Decomposition, Mo Mu
A New Family Of Preconditioners For Domain Decomposition, Mo Mu
Department of Computer Science Technical Reports
No abstract provided.
A Performance Comparison Of Simulation Calendar Algorithms: An Empirical Approach, Kehsiung Chung, Janche Sang, Vernon J. Rego
A Performance Comparison Of Simulation Calendar Algorithms: An Empirical Approach, Kehsiung Chung, Janche Sang, Vernon J. Rego
Department of Computer Science Technical Reports
No abstract provided.
A Generic Virus Scanner In C++, Sandeep Kumar, Eugene H. Spafford
A Generic Virus Scanner In C++, Sandeep Kumar, Eugene H. Spafford
Department of Computer Science Technical Reports
No abstract provided.
Backpropagation Learns Marr's Operator, Anupam Joshi, Chia-Hoang Lee
Backpropagation Learns Marr's Operator, Anupam Joshi, Chia-Hoang Lee
Department of Computer Science Technical Reports
No abstract provided.
Constructing Cl Surfaces Of Arbitrary Topology Using Biquadratic And Bicubic Splines, Jörg Peters
Constructing Cl Surfaces Of Arbitrary Topology Using Biquadratic And Bicubic Splines, Jörg Peters
Department of Computer Science Technical Reports
No abstract provided.
On The Problem Of Correspondence In Range Data And Some Inelastic Uses For Elastic Nets, Anupam Joshi, Chia-Hoang Lee
On The Problem Of Correspondence In Range Data And Some Inelastic Uses For Elastic Nets, Anupam Joshi, Chia-Hoang Lee
Department of Computer Science Technical Reports
No abstract provided.
The Emergence Of Algebraic Curves And Surfaces In Geometric Design, Chandrajit L. Bajaj
The Emergence Of Algebraic Curves And Surfaces In Geometric Design, Chandrajit L. Bajaj
Department of Computer Science Technical Reports
No abstract provided.
Implementation Of Back-Propagation Neural Networks With Matlab, Jamshid Nazari, Okan K. Ersoy
Implementation Of Back-Propagation Neural Networks With Matlab, Jamshid Nazari, Okan K. Ersoy
Department of Electrical and Computer Engineering Technical Reports
The artificial neural network back propagation algorithm is implemented in Matlab language. This implementation is compared with several other software packages. The effect of reducing the number of iterations in the performance of the algorithm iai studied. The speed of the back propagation program, mkckpmp, written in Matlab language is compared with the speed of several other back propagation programs which are written in the C language. The speed of the Matlab program mbackpmp is, also compared with the C program quickpmp which is a variant of the back propagation algorithm. It is shown that the Matlab program mbackpmp is …
Comparative Study Of Motion Control Methods For A Nonlinear System, Daniel J. Pack,, Min Meng, A. C. Kak
Comparative Study Of Motion Control Methods For A Nonlinear System, Daniel J. Pack,, Min Meng, A. C. Kak
Department of Electrical and Computer Engineering Technical Reports
What led to the novel ideas, some of them theoretical, presented in this paper is our highly experimental approach to nonlinear control. We actually designed and fabricated a two-link inverted pendulum, and learned about the relationships and the trade offs that exist in such a device. In the context of controlling an inverted pendulum, the novel ideas presented in this paper relate to i) the design of a fuzzy logic controller; ii) the design of a neuralnetwork controller; and iii) experimental implementation of a nonlinear controller based on differential-geometric notions; etc. etc. These novel ideas are presented in a comparative …
Design Methodology For Low Speed Variable Reluctance Motors, John R. Suriano
Design Methodology For Low Speed Variable Reluctance Motors, John R. Suriano
Department of Electrical and Computer Engineering Technical Reports
Lowering the gear reduction in actuators by utilizing high-torque low-speed motors enables the use of less expensive and simpler gear systems and decreases the overall system inertia. Variable reluctance machines can produce high torque at low speeds. Their static torque, a critical quantity for determination of low speed operation, is colnpared for three variable reluctance motor design variations using linear analysis. Saturation effects, which are crucial to the accurate determination of static torque, are modeled using a dual energy technique first proposed by Lord Rayleigh. Dual energy techniques utilizing flux tubes and magnetomotive force slices are developed into a numerical …
A Neural Network Architecture For Prediction, W. Hsu, L. S. Hsu, M. F. Tenorio
A Neural Network Architecture For Prediction, W. Hsu, L. S. Hsu, M. F. Tenorio
Department of Electrical and Computer Engineering Technical Reports
This report describes a neural network architecture ClusNet designed for the prediction of chaotic time series. It advantages include simplicity, fast and sure convergence, and less need for computing resources. After describing its architecture and learning algorithms, its prediction perfo1:mance on the Logistic and the Mackay-Class chaotic time series is presented. Compared to other current prediction approaches, ClusNet predicts with the same level of accuracy while utilizing less resources.
Development Of A Computer Model For Polycrystalline Thin-Film Cuinse2 And Cdte Solar Cells, Jeffery L. Gray, Richard J. Schwartz, Youn Jung Lee
Development Of A Computer Model For Polycrystalline Thin-Film Cuinse2 And Cdte Solar Cells, Jeffery L. Gray, Richard J. Schwartz, Youn Jung Lee
Department of Electrical and Computer Engineering Technical Reports
No abstract.