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Articles 55951 - 55980 of 57979
Full-Text Articles in Physical Sciences and Mathematics
The Spectrum Simulation System: A Formal Approach To Distributed Algorithm Development Tools, Kenneth J. Goldman
The Spectrum Simulation System: A Formal Approach To Distributed Algorithm Development Tools, Kenneth J. Goldman
All Computer Science and Engineering Research
We present the Spectrum Simulation System, a new research tool for the design and study of distributed algorithms. Based on the formal Input/Output Automation model of Lynch and Tuttle, Spectrum allows one to express distributed algorithms as collections of I/O automata and simulate them directly in terms of the semantics of that model. This permits integration of algorithm specification, design, debugging, analysis, and proof of correctness within a single formal framework that is natural for describing distributed algorithms. Spectrum provides a language for expressing algorithms as I/O automata, a simulator for generating algorithm executions, and a graphics interface for constructing …
Rapid Display Of Radiographic Images, Jerome R. Cox Jr., Stephen M. Moore, Robert A. Whitman, G. James Blaine, R. Gilbert Jost, L. Magnus Karlsson, Thomas L. Monsees, Gregory L. Hansen, Timothy C. David
Rapid Display Of Radiographic Images, Jerome R. Cox Jr., Stephen M. Moore, Robert A. Whitman, G. James Blaine, R. Gilbert Jost, L. Magnus Karlsson, Thomas L. Monsees, Gregory L. Hansen, Timothy C. David
All Computer Science and Engineering Research
The requirements for the rapid display of radiographic images exceed the capabilities of widely available display, computer and communication technologies. Computed radiography captures data with a resolution of about four megapixels. Large format displays are available that can present over four megapixels. One megapixel displays are practical for use in combination with large format displays and in areas where the viewing task does not require primary diagnosis. This paper describes an electronic radiology system that approximates the highest quality systems, but through the use of several interesting techniques allows the possibility of its widespread installation throughout hospitals. The techniques uses …
Fast Parallel Algorithms For Basic Problems, Zhaofang Wen
Fast Parallel Algorithms For Basic Problems, Zhaofang Wen
Computer Science Theses & Dissertations
Parallel processing is one of the most active research areas these days. We are interested in one aspect of parallel processing, i.e. the design and analysis of parallel algorithms. Here, we focus on non-numerical parallel algorithms for basic combinatorial problems, such as data structures, selection, searching, merging and sorting. The purposes of studying these types of problems are to obtain basic building blocks which will be useful in solving complex problems, and to develop fundamental algorithmic techniques.
In this thesis, we study the following problems: priority queues, multiple search and multiple selection, and reconstruction of a binary tree from its …
A Robust Approach To Human-Computer Interface Design Using The Taguchi Method, Billie Mitchell Reed
A Robust Approach To Human-Computer Interface Design Using The Taguchi Method, Billie Mitchell Reed
Engineering Management & Systems Engineering Theses & Dissertations
The application of Dr. Genichi Taguchi's approach for design optimization, called Robust Design, to the design of human-computer interface software is investigated. The Taguchi Method is used to select a near optimum set of interface design alternatives to improve user acceptance of the resulting interface software product with minimum sensitivity to uncontrollable noise caused by human behavioral characteristics.
Design alternatives for interaction with personal micro-computers are identified. Several important and representative alternatives are chosen as design parameters for the Taguchi matrix experiment. A noise field with three human behavioral characteristics as noise factors were chosen as a representative noise array. …
An Nc Algorithm For Scheduling Unit-Time Jobs With Arbitrary Release Times And Deadlines, Greg N. Frederickson, Susan H. Rodger
An Nc Algorithm For Scheduling Unit-Time Jobs With Arbitrary Release Times And Deadlines, Greg N. Frederickson, Susan H. Rodger
Department of Computer Science Technical Reports
No abstract provided.
Philco: Some Recollections Of The Philco Transac S-2000, Saul Rosen
Philco: Some Recollections Of The Philco Transac S-2000, Saul Rosen
Department of Computer Science Technical Reports
No abstract provided.
Porting Ncube Packages To Ipsc/860 And Ipsc/2 Hypercubes, Jingwen Wang, Mo Mu
Porting Ncube Packages To Ipsc/860 And Ipsc/2 Hypercubes, Jingwen Wang, Mo Mu
Department of Computer Science Technical Reports
No abstract provided.
Ambivalent Data Structures For Dynamic 2-Edge-Connectivity And K Smallest Spanning Trees, Greg N. Frederickson
Ambivalent Data Structures For Dynamic 2-Edge-Connectivity And K Smallest Spanning Trees, Greg N. Frederickson
Department of Computer Science Technical Reports
No abstract provided.
Negotiating And Supporting Interdependent Data In Very Large Federated Database Systems, Ahmed K. Elmagarmid, James G. Mullen
Negotiating And Supporting Interdependent Data In Very Large Federated Database Systems, Ahmed K. Elmagarmid, James G. Mullen
Department of Computer Science Technical Reports
No abstract provided.
Design And Implementation Of A Distributed System With Dynamic Resource Allocation Based Upon Bidding Schemes, Dan C. Marinescu, Kenneth Wenstrup, Patrick Davis
Design And Implementation Of A Distributed System With Dynamic Resource Allocation Based Upon Bidding Schemes, Dan C. Marinescu, Kenneth Wenstrup, Patrick Davis
Department of Computer Science Technical Reports
No abstract provided.
An Introduction To The Research Queueing Package For Modeling Computer Systems And Communication Networks, Robert F. Gordon Ph.D., Edward A. Macnair
An Introduction To The Research Queueing Package For Modeling Computer Systems And Communication Networks, Robert F. Gordon Ph.D., Edward A. Macnair
Faculty Works: MCS (1984-2023)
A queueing network is an important tool for modeling systems where performance is principally affected by contention for resources. Such systems include computer systems, communication networks and manufacturing lines. In order to effectively use queuing networks as performance models, appropriate software is necessary for definition ofthe networks to be solved, for solution ofthe networks and for examination of the performance measures obtained. The RESearch Queueing Package (RESQ) and the RESearch Queueing Package Modeling Environment (RESQME) form a system for constructing, solving and analyzing extended queueing network models. We refer to the class of RESQ networks as "extended" because of characteristics …
Performance Experiments And Optimizations Of Pde Sparse Solvers On Hypercubes,, Mo Mu, John R. Rice, Jingwen Wang
Performance Experiments And Optimizations Of Pde Sparse Solvers On Hypercubes,, Mo Mu, John R. Rice, Jingwen Wang
Department of Computer Science Technical Reports
No abstract provided.
Fundamental Techniques For Geometric And Solid Modeling, Christoph M. Hoffmann, George Vanĕček
Fundamental Techniques For Geometric And Solid Modeling, Christoph M. Hoffmann, George Vanĕček
Department of Computer Science Technical Reports
No abstract provided.
A Variable-Free Logic For Mass Terms, William C. Purdy
A Variable-Free Logic For Mass Terms, William C. Purdy
Electrical Engineering and Computer Science - Technical Reports
This paper presents a logic appropriate for mass terms, that is, a logic that does not presuppose interpretation in discrete models. Models may range from atomistic to atomless. This logic is a generalization of the author's work on natural language reasoning. The following claims are made for this logic. First, absence of variables makes it simpler than more conventional formalizations based on predicate logic. Second, capability to deal effectively with discrete terms, and in particular with singular terms, can be added to the logic, making it possible to reason about discrete entities and mass entities in a uniform manner. Third, …
A Sixteen-Valued Algorithm For Test Generation In Combinational Circuits, Akhtar Uz Zaman, M. Ali, Carlos R.P. Hartmann
A Sixteen-Valued Algorithm For Test Generation In Combinational Circuits, Akhtar Uz Zaman, M. Ali, Carlos R.P. Hartmann
Electrical Engineering and Computer Science - Technical Reports
A 16-valued logic system for testing combinational circuits is presented. This logic system has been used to develop SIMPLE, an efficient test generation algorithm for single stuck-at faults. The proposed scheme for testing stuck-at faults is based on imposing all the constraints that must be satisfied in order to sensitize a path from a fault site to a primary output. Consequently all deterministic implications are fully considered prior to the enumeration process. The resulting ability to identify inconsistencies prior to enumeration improves the possibility of quicker identification of redundant faults. In order to prune the search space we have introduced …
Time Delay Neural Networks And Speech Recognition: Context Independence Of Stops In Different Vowel Environments, Gregory Andrew Makowski
Time Delay Neural Networks And Speech Recognition: Context Independence Of Stops In Different Vowel Environments, Gregory Andrew Makowski
Masters Theses
A series of speech recognition experiments was conducted to investigate time-dynamic speech recognition of stop consonants invariant of vowel environment using data from six talkers. The speech preprocessing was based on previous studies investigating acoustic characteristics which correlate to the place of articulation (Blumstein and Stevens 1979). The place of articulation features were statistically abstracted using four moments and the energy level of the speech sample.
Both statistical and neural network pattern recognition methods were used. Statistical methods included linear and quadratic discriminant functions, maximum likelihood estimator (MLE) and K-nearest neighbors (KNN). The neural network approach used was Time Delay …
Dna Mapping Algorithms: Abstract Data Types - Concepts And Implementation, Will Gillett, Liz Hanks
Dna Mapping Algorithms: Abstract Data Types - Concepts And Implementation, Will Gillett, Liz Hanks
All Computer Science and Engineering Research
The conceptual aspects of and the implementation details of a set of self-identifying abstract data types (ADT) are described. Each of the ADTs constitutes a specific class of object, upon which a set of well-defined access functions is available. The intent of these ADTs is to supply a paradigm in which a class of object is available for manipulation, but in which the underlying implementation is hidden from the application programmer. Specific ADTs are the described in some detail. The tagged architecture used to achieve the self-identifying property of the ADTs is presented, and a set of required system-backbone access …
Hidden Markov Model For Visual Guidance Of Robot Motion In Dynamic Environment, Qiuming Zhu
Hidden Markov Model For Visual Guidance Of Robot Motion In Dynamic Environment, Qiuming Zhu
Computer Science Faculty Publications
Models and control strategies for dynamic obstacle avoidance in visual guidance of mobile robot are presented. Characteristics that distinguish the visual computation and motion-control requirements in dynamic environments from that in static environments are discussed. Objectives of the vision and motion planning are formulated as: 1) finding a collision-free trajectory that takes account of any possible motions of obstacles in the local environment; 2) such a trajectory should be consistent with a global goal or plan of the motion; and 3) the robot should move at as high a speed as possible, subject to its kinematic constraints. A stochastic motion-control …
Connectionist Expert System With Adaptive Learning Capability, B. T. Low, Hochung Lui, Ah-Hwee Tan, Hoonheng Teh
Connectionist Expert System With Adaptive Learning Capability, B. T. Low, Hochung Lui, Ah-Hwee Tan, Hoonheng Teh
Research Collection School Of Computing and Information Systems
A neural network expert system called adaptive connectionist expert system (ACES) which will learn adaptively from past experience is described. ACES is based on the neural logic network, which is capable of doing both pattern processing and logical inferencing. The authors discuss two strategies, pattern matching ACES and rule inferencing ACES. The pattern matching ACES makes use of past examples to construct its neural logic network and fine-tunes itself adaptively during its use by further examples supplied. The rule inferencing ACES conceptualizes new rules based on the frequencies of use on the rule-based neural logic network. A new rule could …
The Difficulty Of Random Attribute Noise, Sally A. Goldman, Robert H. Sloan
The Difficulty Of Random Attribute Noise, Sally A. Goldman, Robert H. Sloan
All Computer Science and Engineering Research
This paper studies the robustness of pac learning algorithms when the instance space is {0,1}n, and the examples are corrupted by purely random noise affecting only the instances (and not the labels). In the past, conflicting results on this subject have been obtained-- the "best agreement" rule can only tolerate small amounts of noise, yet in some cases large amounts of noise can be tolerated. We show the truth lies somewhere between the two alternatives. For uniform attribute noise, in which each attribute is flipped independently at random with the same probability, we present an algorithm that pac learns monomial …
Computational Learning Theory Lecture Notes For Cs 582 Spring Semester, 1991, Sally A. Goldman
Computational Learning Theory Lecture Notes For Cs 582 Spring Semester, 1991, Sally A. Goldman
All Computer Science and Engineering Research
This manuscript is a compilation of lecture notes from the graduate level course CS 582, "Computational Learning Theory," I taught at Washington University in the spring of 1991. Students taking the course were assumed to have background in the design and analysis of algorithms as well as good mathematical background. Given that there is no text available on this subject, the course material was drawn from recent research papers. I selected the first twelve topics and the remainder were selected by the students from a list of provided topics. This list of topics is given at the end of these …
One-Sided Error Probabalistic Inductive Interface And Reliable Frequency Identification, Efim Kinber, Thomas Zeugmann
One-Sided Error Probabalistic Inductive Interface And Reliable Frequency Identification, Efim Kinber, Thomas Zeugmann
School of Computer Science & Engineering Faculty Publications
For EX- and BC-type identification, one-sided error probabilistic inference and reliable frequency identification on sets of functions are introduced. In particular, we relate the one to the other and characterize one-sided error probabilistic inference to exactly coincide with reliable frequency identification, on any setM. Moreover, we show that reliable EX and BC-frequency inference forms a new discrete hierarchy having the breakpoints 1, l/2, l/3, ...
Corrigendum To "Taxonomies Of Model-Theoretically Defined Topological Properties", Paul Bankston
Corrigendum To "Taxonomies Of Model-Theoretically Defined Topological Properties", Paul Bankston
Mathematics, Statistics and Computer Science Faculty Research and Publications
An error has been found in the cited paper; namely, Theorem 3.1 is false.
C. S. Lewis, George Macdonald, And Mathematics, David L. Neuhouser
C. S. Lewis, George Macdonald, And Mathematics, David L. Neuhouser
ACMS Conference Proceedings 1991
This paper examines the influence and role of mathematics and mathematicians in the stories of George MacDonald and C. S. Lewis.
Using Mathematics To Teach Calculus, Russell W. Howell
Using Mathematics To Teach Calculus, Russell W. Howell
ACMS Conference Proceedings 1991
For the past two years Westmont College has been one of the beta test sites for the calculus reform experiment being conducted at the University of Illinois under the direction of Jerry Uhl. Brown, Porta, and Uhl have created text which is integrated with Mathematica, a very powerful symbol manipulation, graphics, and number crunching software package produced by Wolfram Research, Inc. A preliminary version of this text has just been released [2]. We have used the Illinois materials for an honors course of incoming Freshmen with prior calculus experience. The purpose of this paper is to evaluate the curriculum and …
Cantor's Concept Of Infinity: Implications Of Infinity For Contingence, Bruce A. Hedman
Cantor's Concept Of Infinity: Implications Of Infinity For Contingence, Bruce A. Hedman
ACMS Conference Proceedings 1991
Georg Cantor (1845-1918) was a devout Lutheran whose explicit Christian beliefs shaped his philosophy of science. Joseph Dauben has traced the impact Cantor's Christian convictions had on the development of transfinite set theory. In this paper I propose to examine how Cantor's transfinite set theory has contributed to an increasingly contingent world view in modern science. The contingence of scientific theories is not just a cautious tentativeness, but arises out of the actual state of the universe itself. The mathematical entities Cantor studied, transfinite numbers, he admitted were fraught with paradoxes. But he believed that they were grounded in a …
Can Mathematical Methods Yield Theological Truth?, Jan De Koning
Can Mathematical Methods Yield Theological Truth?, Jan De Koning
ACMS Conference Proceedings 1991
This paper discusses the negative impact mathematical methods in theology can have on the church by looking specifically at Arminius and Voetius, Dutch theologians living in the late sixteenth and early seventeenth century. Both Arminius and Voetius used mathematical methodology, although they came to different conclusions. I think their differences were due to their different worldviews, which in turn were fundamentally influenced by their upbringing. Both theologians, however, made the same mistake with their methodology and the church split because of that mistake.
A Tale Of Two Mathematicians, Robert Brabenec
A Tale Of Two Mathematicians, Robert Brabenec
ACMS Conference Proceedings 1991
The goal of this paper is to identify some of the discoveries in mathematics during the period from 1820 to 1875 that have profoundly changed the nature of mathematics. To provide a context for this, the author compares some results of mathematics before the year 1820 with those present after 1875. And to humanize this, the author discusses the details of the life and times of two mathematicians, one who was active before 1820 and one who was active after 1875.
How Has Christian Theology Furthered Mathematics?, Gene B. Chase
How Has Christian Theology Furthered Mathematics?, Gene B. Chase
ACMS Conference Proceedings 1991
In revising my Bibliography of Christianity and Mathematics to include material prior to the 20th century, it is difficult to know what to include and what to exclude, since Christian presuppositions informed much scholarship in a vague, cultural sort of way. This paper is a first cut at attempting to narrow down candidates for that Bibliography by looking for specific ways in which Christian theology has furthered mathematics.
Reviving The Argument From Design: Detecting Design Through Small Probabilities, William A. Dembski
Reviving The Argument From Design: Detecting Design Through Small Probabilities, William A. Dembski
ACMS Conference Proceedings 1991
How small do probabilities of events have to get before we refuse to attribute those events to chance? Smallness of probability is itself not enough since events with extremely small probability occur all the time. But when such events are also prespecified, it becomes difficult to attribute their occurrence to chance. Typically we search for a causal account of how chance was offset. Lacking such a causal story, however, are we still justified in asserting that an extremely improbable prespecified event was not the result of chance? This question is relevant to such diverse areas as prophecy, miracles, parapsychology, gambling, …