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Articles 10141 - 10170 of 12092
Full-Text Articles in Entire DC Network
The Pseiki Report -- Version 3. Evidence Accumulation And Flow Of Control In A Hierarchical Spatial Reasoning System, K. M. Andress, A. C. Kak
The Pseiki Report -- Version 3. Evidence Accumulation And Flow Of Control In A Hierarchical Spatial Reasoning System, K. M. Andress, A. C. Kak
Department of Electrical and Computer Engineering Technical Reports
A fundamental goal of computer vision research is the development of systems capable of carrying out scene interpretation using knowledge of the expected scene. Here, we describe PSEIKI, a framework for expectation-driven interpretation of image data. PSEIKI performs expectation-driven processing by matching elements, such as edges and regions, detected in an image with model-elements front a supplied expected scene. PSEIRI builds abstraction hierarchies in image data using cues taken from the supplied abstractions in the expected scene. Hypothesized abstractions in the image data are geometrically compared with the known abstractions in the expected scene; the metrics used for these comparisons …
Puphs2d 2.0 User's Manual, P. E. Dodd, P. D. Demoulin, M. S. Lundstrom
Puphs2d 2.0 User's Manual, P. E. Dodd, P. D. Demoulin, M. S. Lundstrom
Department of Electrical and Computer Engineering Technical Reports
The Purdue University Program for Heterostructure Simulation in Two Dimensions (PUPHS2D) solves Poisson's equation and the electron and hole continuity equations within a two-dimensional heterostructure device. The program will compute the electrostatic potential, electron and hole densities, recombination rate, and other quantities of interest as a function of applied bias. Like its predecessor, version 2.0 allows extensive analysis of solar cells, including computation of the current-voltage characteristics of two-terminal devices, solar cell parameters, quantum efficiency, and current versus solar intensity. Extensions to version 2.Q include transient analysis and bipolar transistor capability. The heterojunction bipolar transistor routines allow computation of dc …
On The Height Of Digital Trees And Related Problems, Wojciech Szpankowski
On The Height Of Digital Trees And Related Problems, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Transaction Accessibility And Integrity Issues In Heterogeneous Distributed Database Systems, Weimin Du, Ahmed K. Elmagarmid, Marek Rusinkiewicz
Transaction Accessibility And Integrity Issues In Heterogeneous Distributed Database Systems, Weimin Du, Ahmed K. Elmagarmid, Marek Rusinkiewicz
Department of Computer Science Technical Reports
No abstract provided.
Obtaining Boundaries With Respect: A Simple Approach To Performing Set Operations On Polyhedra, George Vanecek
Obtaining Boundaries With Respect: A Simple Approach To Performing Set Operations On Polyhedra, George Vanecek
Department of Computer Science Technical Reports
No abstract provided.
A Hierarchical Approach To Concurrency Control For Multidatabases, Ahmed K. Elmagarmid, Yunhho Leu
A Hierarchical Approach To Concurrency Control For Multidatabases, Ahmed K. Elmagarmid, Yunhho Leu
Department of Computer Science Technical Reports
No abstract provided.
Polygon Nesting And Robustness, Chanderjit Bajaj, Tamai Dey
Polygon Nesting And Robustness, Chanderjit Bajaj, Tamai Dey
Department of Computer Science Technical Reports
No abstract provided.
Proof Of A Mutual Exclusion Algorithm-- A `Class'ic Example, Micha Hofri
Proof Of A Mutual Exclusion Algorithm-- A `Class'ic Example, Micha Hofri
Department of Computer Science Technical Reports
No abstract provided.
Efficient Heap Implementation With A Fixed-Size Linear Systolic Array, Jyh-Jong Tsay
Efficient Heap Implementation With A Fixed-Size Linear Systolic Array, Jyh-Jong Tsay
Department of Computer Science Technical Reports
No abstract provided.
Design Considerations For Distributed Scientific Software Systems, Paul E. Buis
Design Considerations For Distributed Scientific Software Systems, Paul E. Buis
Department of Computer Science Technical Reports
No abstract provided.
The Set Union Problem With Unlimited Backtracking, Alberto Apostolico, Guiseppe F. Italiano, Giorgio Gambosi, Maurizic Talamo
The Set Union Problem With Unlimited Backtracking, Alberto Apostolico, Guiseppe F. Italiano, Giorgio Gambosi, Maurizic Talamo
Department of Computer Science Technical Reports
No abstract provided.
Virtual Memory For Diskless Desktop Workstations, Douglas E. Comer, James Griffioen
Virtual Memory For Diskless Desktop Workstations, Douglas E. Comer, James Griffioen
Department of Computer Science Technical Reports
No abstract provided.
Curvature Adjusted Parameterization Of Curves, Richard R. Patterson, Chanderjit Bajaj
Curvature Adjusted Parameterization Of Curves, Richard R. Patterson, Chanderjit Bajaj
Department of Computer Science Technical Reports
No abstract provided.
Parallel, Self-Organizing, Hierarchical Neural Networks, O. K. Ersoy, D. Hong
Parallel, Self-Organizing, Hierarchical Neural Networks, O. K. Ersoy, D. Hong
Department of Electrical and Computer Engineering Technical Reports
A new neural network architecture called the parallel self-organizing hierarchical neural network (PSHNN) is discussed. The PSHNN involves a number of stages in which each stage can be a particular neural network (SNN). At the end of each SNN, error detection is carried out, and a number of input vectors are rejected. Between 2 SNN’s there is a nonlinear transformation of those input vectors rejected by the first SNN. The PSHNN has many desirable properties such as optimized system complexity in the sense of minimized self-organizing number of stages, high classification accuracy, minimized learning and recall times, and truly parallel …
An Optimal Parallel Algorithm For The Minimum Circle-Cover Problem, Mikhail J. Atallah, Danny Z. Chen
An Optimal Parallel Algorithm For The Minimum Circle-Cover Problem, Mikhail J. Atallah, Danny Z. Chen
Department of Computer Science Technical Reports
No abstract provided.
Optimal Canonization Of All Substrings Of A String, A. Apostolico, M. Crochemore
Optimal Canonization Of All Substrings Of A String, A. Apostolico, M. Crochemore
Department of Computer Science Technical Reports
No abstract provided.
Implementing Object Support In The Raid Distributed Database System, Bharat Bhargava, Prasun Dewar, James G. Mullen, Jagannathan Srinivasan
Implementing Object Support In The Raid Distributed Database System, Bharat Bhargava, Prasun Dewar, James G. Mullen, Jagannathan Srinivasan
Department of Computer Science Technical Reports
No abstract provided.
A Model For Adaptable Systems For Transaction Processing, Bharat Bhargava, John Riedl
A Model For Adaptable Systems For Transaction Processing, Bharat Bhargava, John Riedl
Department of Computer Science Technical Reports
No abstract provided.
Nonpreemptive Ensemble Motion Planning On A Tree, Gred N. Frederickson, D. J. Guan
Nonpreemptive Ensemble Motion Planning On A Tree, Gred N. Frederickson, D. J. Guan
Department of Computer Science Technical Reports
No abstract provided.
An Architecture For High-Speed Packet Switched Networks (Thesis), Rajendra Shirvaram Yavatkar
An Architecture For High-Speed Packet Switched Networks (Thesis), Rajendra Shirvaram Yavatkar
Department of Computer Science Technical Reports
No abstract provided.
Basic Studies Of Iii-V High Efficiency Cell Components, M. S. Lundstrom, M. R. Melloch, R. F. Pierret, M. S. Carpenter
Basic Studies Of Iii-V High Efficiency Cell Components, M. S. Lundstrom, M. R. Melloch, R. F. Pierret, M. S. Carpenter
Department of Electrical and Computer Engineering Technical Reports
This project’s objective is to improve our fundamental understanding of the generation, recombination, and transport of carriers within III-V homo- and heterostructures. The research consists of fabricating and characterizing solar cell “ building blocks” such as junctions and heterojunctions as well as basic measurements of material parameters. A significant effort is also being directed at characterizing loss mechanisms in high-quality, III-V solar cells fabricated in industrial research laboratories throughout the United States. The project’s goal is to use our understanding of the device physics of high-efficiency cell components to maximize cell efficiency. A related goal is the demonstration of new …
Propagation Of Nonsinusoidal Waveforms In Power Systems, Robert Sparks
Propagation Of Nonsinusoidal Waveforms In Power Systems, Robert Sparks
Department of Electrical and Computer Engineering Technical Reports
Several computationally efficient and innovative methods for the calculation of power system voltages due to nonsinusoidal demand currents are studied. The method is useful for power quality calculations. The method is introduced by using Laplace transform analysis to simplify the convolution of the transfer impedances and the demand currents. An iterative numerical inverse Laplace transform method is briefly examined. However, the problem characteristics allow Fourier transform analysis to be used. Furthermore, the fast Fourier transform is used to approximate the continuous Fourier transform. This discrete transform analysis method proves to be conveniently suitable to the problem definition. More importantly the …
Noise Cancellation Method For Improvement Of Power Quality, Paul Albert Kuban
Noise Cancellation Method For Improvement Of Power Quality, Paul Albert Kuban
Department of Electrical and Computer Engineering Technical Reports
Chapter 1 of this thesis presents a discussion of common power system disturbances, including a section on the causes and effects of harmonic distortion Several standard methods for eliminating these disturbances are also discussed. In Chapter 2, a presentation of filter design techniques provides background information leading to the introduction of the proposed noise cancellation method. In the proposed circuit, the fundamental frequency component of the input waveform is attenuated by the use of a band stop filter.. The remaining distortion component is then inverted and coupled to the original input waveform by means of a series transformer. Chapter 3 …
Development Of Process Technology For Gaas E/D Modfet Logic Circuits, Kai Chen, James A. Cooper Jr
Development Of Process Technology For Gaas E/D Modfet Logic Circuits, Kai Chen, James A. Cooper Jr
Department of Electrical and Computer Engineering Technical Reports
The GaAs MODFET device is one of the prominent candidates for very high speed circuit applications. This thesis presents the MODFET DCFL inverter and other logic circuit design and process development. Working circuits of E/D type inverters, three input NAND and NOR logic gates and ring oscillators are reported.
The Dq Analysis Of A Variable Reluctance Stepper Motor, David J. Kish
The Dq Analysis Of A Variable Reluctance Stepper Motor, David J. Kish
Department of Electrical and Computer Engineering Technical Reports
Variable reluctance stepper motors are commonly used in applications where incremental motion is desired. Recently, these motors have been used in situations which call for a large stepping rate; so large in fact, that the motor hums continuously. Although the equations which describe the stepper motor in this mode are decoupled, they are not time invariant. In order to eliminate the time varying terms, Park’s transformation is applied to the motor equations. It is found that this transformation does not render the system equations time invariant, so an averaging technique is employed which does provide the desired time invariance. The …
Algorithm Choice For Multiple-Query Evaluation, Myong H. Kang, Henry G. Dietz
Algorithm Choice For Multiple-Query Evaluation, Myong H. Kang, Henry G. Dietz
Department of Electrical and Computer Engineering Technical Reports
Traditional query optimization concentrates on the optimization of the execution of each individual query. More recently, it has been observed that by considering a sequence of multiple queries some additional high-level optimizations can be performed. Once these optimizations have been performed, each operation is translated into executable code. The fundamental insight in this paper is that significant improvements can be gained by careful choice of the algorithm to be used for each operation. This choice is not merely based on efficiency of algorithms for individual operations, but rather on the efficiency of the algorithm choices for the entire multiple-query evaluation. …
Adaptive Networks As A Model For Human Speech Development, M. Fernando Tenorio, M. Daniel Tom, Richard G. Schwartz
Adaptive Networks As A Model For Human Speech Development, M. Fernando Tenorio, M. Daniel Tom, Richard G. Schwartz
Department of Electrical and Computer Engineering Technical Reports
Unrestricted English text can be converted to speech through the use of a look up table, or through a parallel feedforward network of deterministic processing units. Here, we reproduce the network structure used in NETtalk. Several experiments are carried out to determine which characteristics of the network are responsible for which learning behavior, and how closely that maps human speech development. The network is also trained with different levels of speech complexity, and with a second language. The results are shown to be highly dependent on statistical characteristics of the input.
Identification Of Concealed Insect Infestations Using A Passive Ultrasound Monitor, Richard E. Klaassen, Eric S. Furgason
Identification Of Concealed Insect Infestations Using A Passive Ultrasound Monitor, Richard E. Klaassen, Eric S. Furgason
Department of Electrical and Computer Engineering Technical Reports
Concealed insect infestations in stored grain are responsible for large economic losses worldwide, and have traditionally been difficult to detect arid quantify. A simple method of infestation detection and quantification has been developed, taking advantage of the ultrasonic emissions generated by the feeding activity of the insects. The acoustic signals generated by the insects are characterized as bursts of energy in the frequency range of 5 to 75 kHz, varying with the variety of seed being examined. These signals can be detected reliably by monitoring the seeds for sounds in a frequency band between 30 and 50 kHz. The stage …
An O(H^6) Quintic Spline Collocation Method For Second Order Two-Point Boundary Value Problems, M. Irodotou-Ellina, Elias N. Houstis, S. B. Kim
An O(H^6) Quintic Spline Collocation Method For Second Order Two-Point Boundary Value Problems, M. Irodotou-Ellina, Elias N. Houstis, S. B. Kim
Department of Computer Science Technical Reports
No abstract provided.
Algebraic And Numerical Techniques For Offsets And Blends, Christoph M. Hoffmann
Algebraic And Numerical Techniques For Offsets And Blends, Christoph M. Hoffmann
Department of Computer Science Technical Reports
No abstract provided.