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Articles 55681 - 55710 of 58001
Full-Text Articles in Physical Sciences and Mathematics
On Domains Of Superior Convergence Of The Ssor Method Over The Sor Method, A. Hadijidmos, Michael Neumann
On Domains Of Superior Convergence Of The Ssor Method Over The Sor Method, A. Hadijidmos, Michael Neumann
Department of Computer Science Technical Reports
No abstract provided.
Optimally Computing The Shortest Weakly Visible Subedge For A Simple Polygon, Danny Z. Chen
Optimally Computing The Shortest Weakly Visible Subedge For A Simple Polygon, Danny Z. Chen
Department of Computer Science Technical Reports
No abstract provided.
Unified Stochastic Simulations For Vector Machines: Empirical Results, Vernon J. Rego, Ling-Yu Chuang, Aditya P. Mathur
Unified Stochastic Simulations For Vector Machines: Empirical Results, Vernon J. Rego, Ling-Yu Chuang, Aditya P. Mathur
Department of Computer Science Technical Reports
No abstract provided.
Stabilty Conditions For Some Multiqueue Distributed Systems: Buffered Random Access Systems, Wojciech Szpankowski
Stabilty Conditions For Some Multiqueue Distributed Systems: Buffered Random Access Systems, Wojciech Szpankowski
Department of Computer Science Technical Reports
No abstract provided.
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 8, Number 5, May 1992, College Of Engineering And Computer Science, Wright State University
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 8, Number 5, May 1992, College Of Engineering And Computer Science, Wright State University
BITs and PCs Newsletter
A six page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.
General Model Theoretic Semantics For Higher-Order Horn Logic Programming, Mino Bai, Howard A. Blair
General Model Theoretic Semantics For Higher-Order Horn Logic Programming, Mino Bai, Howard A. Blair
Electrical Engineering and Computer Science - Technical Reports
We introduce model-theoretic semantics [6] for Higher-Order Horn logic programming language. One advantage of logic programs over conventional non-logic programs has been that the least fixpoint is equal to the least model, therefore it is associated to logical consequence and has a meaningful declarative interpretation. In simple theory of types [9] on which Higher-Order Horn logic programming language is based, domain is dependent on interpretation [10]. To define T p operator for a logic program P, we need a fixed domain without regard to interpretation which is usually taken to be a set of atomic propositions. We build a semantics …
Deterministic Approximations To Co-Production Problems With Service Constraints And Random Yields, Gabriel R. Bitran, Thin Yin Leong
Deterministic Approximations To Co-Production Problems With Service Constraints And Random Yields, Gabriel R. Bitran, Thin Yin Leong
Research Collection School Of Computing and Information Systems
Production planning problems where multiple item categories are produced simultaneously are examined. The items have random yields and are used to satisfy the demands of many products. These products have specification requirements that overlap. An item originally targeted to satisfy the demand of one product may be used to satisfy the demand of other products when it conforms to their specifications. Customers' demand must be satisfied from inventory. The problem is formulated with service constraints and a near-optimal solution is provided to the problem with a fixed planning horizon. Simple heuristics are proposed for the problem solved with a rolling …
Ua66/3/2 Computer Science Alumni Newsletter, Vol. 7, Wku Computer Science
Ua66/3/2 Computer Science Alumni Newsletter, Vol. 7, Wku Computer Science
WKU Administration Documents
Newsletter created by WKU Computer Science for alumni of the program. This issue includes course offerings, computer lab diagram and an alumni survey.
Computer Science Education At Wku, Malcolm Stallings
Computer Science Education At Wku, Malcolm Stallings
Mahurin Honors College Capstone Experience/Thesis Projects
No abstract provided.
Multiprocessor File System Interfaces, David Kotz
Multiprocessor File System Interfaces, David Kotz
Dartmouth Scholarship
MIMD multiprocessors are increasingly used for production super-computing. Supercomputer applications often have tremendous file I/O requirements. Although newer I/O sub-systems, which attach multiple disks to the multiprocessor, permit parallel file access, file system software often has insufficient support for parallel access to the parallel disks, which is necessary for scalable performance. Most existing multiprocessor file systems are based on the conventional file system interface (which has operations like open, close, read, write, and seek). Although this provides the familiar file abstraction, it is difficult to use for parallel access to a file. Scalable applications must cooperate to read or write …
Single Object Detection Using Multiple Sensors With Unknown Noise Distributions, Shaofen Chen
Single Object Detection Using Multiple Sensors With Unknown Noise Distributions, Shaofen Chen
Computer Science Theses & Dissertations
We consider the design of an object classification system that identifies single objects using a system of sensors; each sensor outputs a random vector, according to an unknown (noise) probability distribution, in response to a sensed object. We consider a special class of systems, called the linearly separable systems, where the error-free sensor outputs corresponding to distinct objects can be mapped into disjoint intervals on real line. Given a set of sensor outputs corresponding to known objects, we show that a detection rule αemp that approaches the correct rule with a high probability can be computed. We show …
Testing A Simple Polygon For Monotonicity Optimally In Parallel, Danny Z. Chen, Sumanta Guha
Testing A Simple Polygon For Monotonicity Optimally In Parallel, Danny Z. Chen, Sumanta Guha
Department of Computer Science Technical Reports
No abstract provided.
The Development And Application Of Testing Techniques In An Object-Oriented Paradigm, Robert F. Kozal
The Development And Application Of Testing Techniques In An Object-Oriented Paradigm, Robert F. Kozal
Masters Theses
This thesis is the study of testing object-oriented programs. Aspects of object-oriented programs for which testing techniques are developed include classes, methods, inheritance, polymorphism, and encapsulation. The application of these techniques are illustrated, and a comparison between traditional testing techniques and object-oriented techniques is also drawn.
Modeling The Darpa Diesel Engine In Proengineer, Christoph M. Hoffmann
Modeling The Darpa Diesel Engine In Proengineer, Christoph M. Hoffmann
Department of Computer Science Technical Reports
No abstract provided.
A Vml Based Implementation Of A Neural Network Library On General Purpose Parallel Processors, H. Byun, S. K. Kortesis, Elias N. Houstis
A Vml Based Implementation Of A Neural Network Library On General Purpose Parallel Processors, H. Byun, S. K. Kortesis, Elias N. Houstis
Department of Computer Science Technical Reports
No abstract provided.
Integrating Distributed Data Sources Using Federated Objects, Henry R. Tirri, Jagannathan Srinivasan, Bharat Bhargava
Integrating Distributed Data Sources Using Federated Objects, Henry R. Tirri, Jagannathan Srinivasan, Bharat Bhargava
Department of Computer Science Technical Reports
No abstract provided.
The Architecture Of Pde Solving Systems, Elias N. Houstis, John R. Rice
The Architecture Of Pde Solving Systems, Elias N. Houstis, John R. Rice
Department of Computer Science Technical Reports
No abstract provided.
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 8, Number 4, April 1992, College Of Engineering And Computer Science, Wright State University
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 8, Number 4, April 1992, College Of Engineering And Computer Science, Wright State University
BITs and PCs Newsletter
An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.
Embedding Data Mappers With Distributed Memory Machine Compilers, Ravi Ponnusamy, Joel Saltz, Raja Das, Charles Koelbel, Alok Choudhary
Embedding Data Mappers With Distributed Memory Machine Compilers, Ravi Ponnusamy, Joel Saltz, Raja Das, Charles Koelbel, Alok Choudhary
Electrical Engineering and Computer Science - Technical Reports
In scalable multiprocessor systems, high performance demands that computational load be balanced evenly among processors and that interprocessor communication be limited as much as possible. Compilation techniques for achieving these goals have been explored extensively in recent years [3, 9, 11, 13, 17, 18]. This research has produced a variety of useful techniques, but most of it has assumed that the programmer specifies the distribution of large data structures among processor memories. A few projects have attempted to automatically derive data distributions for regular problems [12, 10, 8, 1]. In this paper, we study the more challenging problem of automatically …
A Probabilistic Analysis Of A Locality Maintaining Load Balancing Algorithm, Kishan Mehrotra, Sanjay Ranka, Jhy-Chun Wang
A Probabilistic Analysis Of A Locality Maintaining Load Balancing Algorithm, Kishan Mehrotra, Sanjay Ranka, Jhy-Chun Wang
Electrical Engineering and Computer Science - Technical Reports
This paper presents a simple load balancing algorithm and its probabilistic analysis. Unlike most of the previous load balancing algorithms, this algorithm maintains locality. We show that the cost of this load balancing algorithm is small for practical situations and discuss some interesting applications for data remapping.
Graph Theory Based Routing Algorithms, Bo Wu
Graph Theory Based Routing Algorithms, Bo Wu
Masters Theses
In this thesis, we study two VLSI layout problems.
We investigate the Minimum-Bend Single Row Routing Problem in which the objective function is to minimize the number of doglegs (or blends) per net. Our approach uses a graph theoretic representation in which an instance of the Single Row Routing Problem is represented by three graphs, an overlap graph, a containment graph and an interval graph. Using this graph representation, we develop three algorithms for minimum-bend single row routing problem.
We present a three-layer over-the-cell router (ICR-3) for the standard cell design style based on a new cell model which assumes …
Algorithms For Incomplete Hypercubes, Venkata K. Prabhala
Algorithms For Incomplete Hypercubes, Venkata K. Prabhala
Masters Theses
Networked multiprocessing architectures for parallel com putation offer an alternative to high cost supercomputing. Recently hypercube has emerged as the most versatile architecture for parallel com putations. However, the number of nodes m in a hypercube is a power of 2, 2d, where d is the dimension of the hypercube. In practice, it m ay not be possible to have a complete hypercube because the cost of upgradation is proportional to the num ber of nodes. Incomplete and Composite hypercubes help remove the exponential node(and hence cost) constraint.
In this thesis we establish the equality of m-node …
A Survey Of Computer Use In Occupational Therapy Fieldwork Sites, Martha E. Parks
A Survey Of Computer Use In Occupational Therapy Fieldwork Sites, Martha E. Parks
Masters Theses
Eighty-three Western Michigan University occupational therapy fieldwork sites were surveyed to determine: (a) extent of computer use, (b) diagnostic categories with which computers are used, (c) extent of computer knowledge of registered occupational therapists (OTRs), and (d) adequacy of computer knowledge of fieldwork students. Forty-seven (56.6%) of the 83 surveys were returned. OTRs at 36 (76.6%) of the 47 sites currently use computers. Word processing is the most common way in which these OTRs use computers. The most common clinical use of computers is perceptual/motor assessment and treatment, while the most common research use of computers is for report writing. …
On Planar Routing Of Multi-Terminal Nets In Vlsi Physical Design, Jahangir A. Hashmi
On Planar Routing Of Multi-Terminal Nets In Vlsi Physical Design, Jahangir A. Hashmi
Masters Theses
In this thesis, we study two problems related to the physical design of VLSI circuits. One problem is related to the VLSI global routing and the other is related to the detailed routing in a bounded region.
We consider the routing of multiple multi-terminal nets on a single layer. We suggest a new approach for this problem. Our approach is based on simultaneously finding a forest of k non-intersecting spanning trees. We present an O(n^3) algorithm for finding two spanning trees corresponding to two nets on a single layer.
We also study the problem of finding a minimum Steiner tree …
Feature Extraction And Classification Of Flir Imagery Using Relative Locations Of Non-Homogeneous Regions With Feedforward Neural Networks, Kevin L. Priddy
Feature Extraction And Classification Of Flir Imagery Using Relative Locations Of Non-Homogeneous Regions With Feedforward Neural Networks, Kevin L. Priddy
Theses and Dissertations
The classification of forward looking infrared (FLIR) imagery is explored using Gabor transform decomposition and relative locations of non- homogeneous regions combined with feedforward neural networks. A feature saliency metric is developed from a Bayesian sensitivity analysis of feedforward neural networks. This metric is then used to reduce the dimensionality of the feature vectors used to identify FLIR imagery without any degradation of classification accuracy. Several system architectures are developed using a roving window combined with a series of Gabor filters to produce feature vectors for presentation to a neural network classifier. One architecture uses the Gabor filter coefficients to …
Formant Estimation From Dctc's Using A Feedforward Neural Network, Shubhangi U. Kelkar
Formant Estimation From Dctc's Using A Feedforward Neural Network, Shubhangi U. Kelkar
Electrical & Computer Engineering Theses & Dissertations
Formants are the natural frequencies of the human vocal tract. Existing methods for estimating formants from speech signals are computationally complex and subject to errors for certain type of speech sounds. This thesis describes a method for estimating vowel formant frequencies from Discrete Cosine Transform Coefficients (DCTC's), a form of cepstral coefficients, using a feedforward neural network with back-propagation training. Experimental results are based on a large multispeaker data base. The results are obtained for both a linear transformation and a feedforward neural network with a nonlinear hidden layer. In general, the neural network transformation is superior to the linear …
Monitoring Computer Systems: An Intelligent Approach, Myron Zhihong Xu
Monitoring Computer Systems: An Intelligent Approach, Myron Zhihong Xu
Computer Science Theses & Dissertations
Monitoring modern computer systems is increasingly difficult due to their peculiar characteristics. To cope with this situation, the dissertation develops an approach to intelligent monitoring. The resulting model consists of three major designs: representing targets, controlling data collection, and autonomously refining monitoring performance. The model explores a more declarative object-oriented model by introducing virtual objects to dynamically compose abstract representations, while it treats conventional hard-wired hierarchies and predefined object classes as primitive structures. Taking the representational framework as a reasoning bed, the design for controlling mechanisms adopts default reasoning backed up with ordered constraints, so that the amount of data …
Reasoning By Analogy In A Multi-Level System Architecture For The Design Of Mechanisms, Ghassan F. Issa
Reasoning By Analogy In A Multi-Level System Architecture For The Design Of Mechanisms, Ghassan F. Issa
Computer Science Theses & Dissertations
Since the first attempts to integrate AI technology and engineering design nearly two decades ago, few expert systems have been shown to demonstrate sufficient reasoning capabilities to solve real-world design problems. The complex nature of design, the lack of understanding of the design process, and the limitations of current expert system technology have all been shown to have adverse effects on the maturity of this research area. Therefore, our direction in this research concentrates on understanding the design process, investigating a novel area of research focusing on creative design, and incorporating the results into a system model feasible for production …
A Visualization System For Correctness Proofs Of Graph Algorithms, Peter A. Gloor, Donald B. Johnson, Fillia Makedon, Panagiotis Metaxas
A Visualization System For Correctness Proofs Of Graph Algorithms, Peter A. Gloor, Donald B. Johnson, Fillia Makedon, Panagiotis Metaxas
Computer Science Technical Reports
In this paper we describe a system for visualizing correctness proofs of graph algorithms. The system has been demonstrated for a greedy algorithm. Prim's algorithm for finding a minimum spanning tree of an undirected, weighted graph. We believe that our system is particularly appropriate for greedy algorithms, though much of what we discuss can guide visualization of proofs in other contexts. While an example is not a proof, our system provides concrete examples to illustrate the operation of the algorithm. These examples can be referred to by the user interactively and alternatively with the visualization of the proof where the …
Macromolecular Electron Density Averaging On Distributed Memory Mimd Systems, Dan C. Marinescu, John R. Rice, Marius A. Cornea-Hasegan, Robert E. Lynch, Michael G. Rossmann
Macromolecular Electron Density Averaging On Distributed Memory Mimd Systems, Dan C. Marinescu, John R. Rice, Marius A. Cornea-Hasegan, Robert E. Lynch, Michael G. Rossmann
Department of Computer Science Technical Reports
No abstract provided.