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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 8, Number 2, February 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.

Ada In The Soviet Union, Peter Wolcott

Information Systems and Quantitative Analysis Faculty Proceedings & Presentations

Over the last decade and a half, the Ada programming language has aroused more financial, technical, political, and emotional forces than any other programming language. Because the language is a product of more than just technical factors, its progress is heavily influenced by the surrounding social, economic, and political environment. Judging by the technical characteristics of the language and the goals for its use, one would expect that Ada would be the subject of intense development by the USSR, as well as by the USA. In practice, the Ada experiences in these countries differ considerably. We examine the state of …

Real-Tv : Rtp/L3'S Visual Monitor, Richard Czop

Theses

Today many real-world activities are being monitored and controlled by some type of micro-processor based system. Emphasis is placed on manufacturing and controlling through the use of computers. The inherent nature of these real-world applications makes them difficult to control and monitor. They must be built meeting strict timing constraints and must be predictable. We need to develop simplistic, reliable, and cost effective methods for building, evaluating, monitoring and controlling these complex systems. These tools should provide the user with system insight. At the New Jersey Institute of Technology Real-Time Computing Laboratory, we are building a system that will provide …

Fundamental Solutions Of 9-Point Discrete Laplacians; Derivation And Tables, Robert E. Lynch

Department of Computer Science Technical Reports

No abstract provided.

Software Support For Irregular And Loosely Synchronous Problems, Alok Choudhary, Geoffrey C. Fox, Sanjay Ranka, Seema Hiranandani

Electrical Engineering and Computer Science - All Scholarship

A large class of scientific and engineering applications may be classified as irregular and loosely synchronous from the perspective of parallel processing. We present a partial classification of such problems. This classification has motivated us to enhance Fortran D to provide language support for irregular, loosely synchronous problems. We present techniques for parallelization of such problems in the context of Fortran D.

Spede: A Simple Programming Environment For Distributed Execution (Users' Manual), James Gochee

Dartmouth College Undergraduate Theses

Traditional single processor computers are quickly reaching their full computational potentials. The quest for faster and faster chips have brought technology to the point where the laws of physics are hampering future gains. Significant gains in speed must therefore come from using multiple processors instead of a single processor. This technology usually represents itself in the form of a parallel computer, such as the Connection Machine Model 5. Recently however, much interest has been focused on software that organizes single processor computers to behave like a parallel computer. This is desirable for sites which have large installations of workstations, since …

Methods For Calculating Solar Position And Day Length Including Computer Programs And Subroutines, M L. Roderick

Resource management technical reports

The theory of calculating solar position is described. Using this theory, a number of computing routines are prepared in the C programming language. These routines are suitable for users who program in C, and have an ANSI compatible C compiler. These routines are fully documented, with both the underlying theory, and code particulars, and may be used as a stand alone reference. The source code has also been published in appendix B of the report.

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 8, Number 1, January 1992, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

A Prototype Document Image Analysis System For Technical Journals, George Nagy, Sharad C. Seth, Mahesh Viswanathan

School of Computing: Faculty Publications

Intelligent document segmentation can bring electronic browsing within the reach of most users. The authors show how this is achieved through document processing, analysis, and parsing the graphic sentence.

Porting Chorus To The Pa-Risc: Virtual Memory Manager, Jon Inouye, Marion Hakanson, Ravi Konuru, Jonathan Walpole

Computer Science Faculty Publications and Presentations

This document describes the port ofthe Chorus virtual memory manager to the Hewlett-Packard Precision Architecture rusc (PA-RISC) workstation. The information contained in this paper will be of interest to people who:

• intend to port the Chorus virtual memory section. • intend to port a virtual memory design to the Hewlett-Packard PA-RISC.

The reader is strongly encouraged to read the following PA-Chorus documents before reading this document:

• Technical Report CSE-92-3, Porting Chorus to the PA-RISC: Project Overview

Flattening C++ Classes, Umesh Bellur, Al Villarica, Kevin Shank, Imram Bashir, Doug Lea

Center for Advanced Systems and Engineering

Inheritance with derived classes and virtual functions are key design concepts in C++. Despite this, their use can result in significant degradation of run time performance. We present a class flattening tool, which we believe will help eliminate the overhead associated with virtual functions in C++ programs. A flattener may also prove useful in the reuse, debugging, and understanding of C++ components. This report deals with the issues associated with flattening, and then presents a detailed design of such a tool.

Software Support For Irregular And Loosely Synchronous Problems, Alok Choudhary, Geoffrey C. Fox, Sanja Ranka, Seema Hiranandani

Northeast Parallel Architecture Center

A large class of scientific and engineering applications may be classified as irregular and loosely synchronous from the perspective of parallel processing. We present a partial classification of such problems. This classification has motivated us to enhance Fortran D to provide language support for irregular, loosely synchronous problems. We present techniques for parallelization of such problems in the context of Fortran D.

A Comparison Of Text And Graphics As Effective User Interfaces In A Proposed Advanced Train Control System, Kenneth A. Organes

UNF Graduate Theses and Dissertations

This study tested the effectiveness of three screen interface formats for use in a proposed on-board computer to be used as part of an advanced train control system. One of the three formats contained only graphic depictions of the data, one contained only textual representations and the third had a mixture of graphic and textual data.

Twenty-eight subjects with varying railroad experience were recruited for the experiment. They were divided into three groups, each of which was presented with a simulation using one of the three interface types. The simulations depicted possible engine, track and train conditions that might be …

Program Maintenance And Code Reuse: Object Oriented Versus Procedure Oriented Programming, Beiramali Moradi

Theses

The purpose of this thesis is to address the problem of the increasing cost of program maintenance in the data processing world. On average, programmers today spend 60% of their time in program maintenance and that figure is increasing at an estimated rate of 1 % each year. The cost is staggering and almost every business would like to find ways of reducing maintenance costs. One way to help reduce maintenance and development costs is to improve code reusability. Both maintenance programming and code reusability are the focus of this thesis.

Today's most commonly used programming language style is procedure …

Distributed Ray Casting For High-Speed Volume Rendering, Patricia L. Brightbill

Theses and Dissertations

The volume rendering technique known as ray casting or ray tracing is notoriously slow for large volume sizes, yet provides superior images. A technique is needed to accelerate ray tracing volumes without depending on special purpose or parallel computers. The realization and improvements in distributed computing over the past two decades has motivated its use in this work. This thesis explores a technique to speedup ray casting by distributed programming. The work investigates the possibility of dividing the volume among general purpose workstations and casting rays (using Levoy's front-to-back algorithm) through each subvolume independently. The final step being the composition …

The Group Spreadsheet, George Francis Morrissey Jr.

UNF Graduate Theses and Dissertations

Groupware is fast becoming an important part of the computing world. This thesis reviews past history and research in which a group oriented spreadsheet is shown to have a real purpose in today's business world. A group oriented spreadsheet was implemented using a public domain package called The Spreadsheet Calculator. Spreadsheet users and programmers tested the implementation. The results and conclusions of this implementation are also presented.

Measurement Of Τ Decays Involving Η Mesons, M. Artuso, M. Thulasidas

Research Collection School Of Computing and Information Systems

No abstract provided.

Some Developments In Information Technology In The Irish Hotel And Catering Industry, Sean Connell, Elaine Sunderland, Ciaran Mcdonnell

Conference papers

This paper describes the current and potential future use of computers in the Hospitality Industry in Ireland. It briefly outlines two research projects which are being carried out in the Dublin College of Catering in the application of computers to the Industry.

Proving Functionally Difficult Problems Through Model Generation, Richard Rankin, Ralph W. Wilkerson

Computer Science Faculty Research & Creative Works

Satchmo [MA88] is a Theorem Prover Implemented in Prolog Which Attempts to Provide Satisfiability Checking through Model Generation. This Paper Gives a Brief Introduction to SATCHMO and Reports Extensions to the Original Work Which Allow SATCHMO to Solve Problems Previously Considered to Be Finitely Unprovable within the SATCHMO System. the Specific Problems Are from [PE86, MO85, LU85] and Were Designed to Convert Simple Propositional Logic Problems into Functionally Difficult First Order Problems. Although the Benefits of using the SATCHMO System Are Many, the Fact that It Could Not Offer Proofs for a Set of Problems Provable in Other Systems is …

Experimentation With Proof Methods For Non-Horn Sets, Christopher J. Merz, Ralph W. Wilkerson

Computer Science Faculty Research & Creative Works

Two Resolution Proof Strategies Developed by Peterson Are Implemented by Modifying Otter, an Existing Automated Theorem Prover. the Methods, Lock-T Refutation and LNL-T Refutation, Are Generalizations of Unit Refutation and Input Resolution, Respectively, to Non-Horn Sets and Represent Independent, Equivalent but Opposite Ways of Searching. the Algorithms Used Are based on a Corrected Version of the Foundational Work. the Strategies Have Been Tested on Various Non-Horn Challenge Problems from the Tarskian Geometry and the Non-Obvious Problem, with the Results Being in Some Cases Quite Favorable When Compared to Other Resolution Techniques.

Formation Of Clusters And Resolution Of Ordinal Attributes In Id3 Classification Trees, Chaman Sabharwal, Keith R. Hacke, Daniel C. St. Clair

Computer Science Faculty Research & Creative Works

Many learning systems have been designed to construct classification trees from a set of training examples. One of the most widely used approaches for constructing decision trees is the ID3 algorithm [Quinlan 1986]. Decision trees are ill-suited to handle attributes with ordinal values. Problems arise when a node representing an ordinal attribute has a branch for each value of the ordinal attribute in the training set. This is generally infeasible when the set of ordinal values is very large. Past approaches have sought to cluster large sets of ordinal values before the classification tree is constructed [Quinlan 1986; Lebowitz 1985; …

Applying Metrics To Rule-Based Systems, Paul Doyle, Renaat Verbruggen

Other

Since the introduction of software measurement theory in the early seventies it has been accepted that in order to control software it must first be measured. Unambiguous and reproducible measurements are considered to be the most useful in controlling software productivity, costs and quality, and diverse sets of measurements are required to cover all aspects of software. This paper focuses on measures for rule-based language systems and also describes a process for developing measures for other non-standard 3GL development tools. This paper uses KEL as an example and the method allows the re-use of existing measures and indicates if and …

An Investigation Of Ibm Pc Computer Viruses Infection Rates And Types In A Western Australian Environment, Boon Guan Lee

Theses : Honours

In recent years computer viruses have become increasingly significant as a form of computer abuse. By virtue of their reproductive capability, computer viruses can have cumulative and potentially catastrophic effects to the many people who use those affected computers. There is a growing concern in the computing community about these forms of electronic vandalism. This concern arises from the possible damage to stored information on which the work depends and the ensuing disruption of the work-place. Although the vandalism or purposeful abuse by introducing computer viruses to computer systems was originally mainly an American experience, research reports published by the …

Application Of Expert System Techniques For Award Implementation, Seng-Choon Yeoh

Theses : Honours

This paper describes a pilot expert system project, PESWEA, developed in conjunction with The Western Australian Government Railways Commission (Westrail), to locate and implement an expert system pilot solution to the problems and complexities of the awards. The paper will outline the process used to develop and implement a solution to a business requirement. In particular, the methodologies for the project, shell selection, and knowledge acquisition will be presented and discussed. The fundamentals of expert systems will be discussed to provide the reader an insight into the technology. In addition, this paper reviews the literature relevant to the research questions. …

A Comparison Of The Effects Of Reading From A Vdu And From Paper As Measured In Terms Of Reading Speed And Comprehension, Elizabeth Payumo

Theses: Doctorates and Masters

This study investigates the legibility and visual effects of eight combinations of font and colour on VDU and two different fonts on paper. Forty subjects, sixteen females and twenty-four males, were exposed to three of the ten different conditions, one in each of the set of readings, on either VDU or paper. They were asked to read different sets of stories in each condition on different days where each condition lasted for approximately two hours. Reading speed and comprehension scores were measured in every story read in the set of stories. The change of mood and physical symptoms states of …

Editing Digital Audio Using A Perceptual Model, J. Mark Goode

Theses

In this paper we describe an intelligent system used to aid an audio recording producer in the selection of edit points in a musical sequence. It is possible to make meaningful recommendations concerning auditory input data without the ability to fully classify that data or interpret all outside goals. Perceptual modeling of the auditory input can allow sufficient reasoning ability for an intelligent system to be of use editing digital audio. To create a perceptual model, the information which can be extracted by the ear is embodied in several expert sections which communicate with a rule based decision maker via …

Representation Of Graphical Deep Knowledge In An Object-Oriented Database System, Prasanna S. Venkatesh

Theses

Object-oriented approaches to the design of complex graphical interfaces have received an enormous impetus in the database and knowledge representation disciplines. As traditional CAD systems store information about all the objects for display purposes but do not store any knowledge for reasoning purposes, they are considered as "knowledge poor" and they cannot support efficient environments for design. In Artificial Intelligence the notion of "Graphical Deep Knowledge" has been proved successful to represent knowledge about objects for display purposes as well as reasoning purposes. To design "knowledge rich" systems which can support better graphical interfaces, the theory of "Graphical Deep Knowledge" …

Three Letters On Computer Security And Society, Eugene H. Spafford

Department of Computer Science Technical Reports

No abstract provided.

User Authentication And Related Topics: An Annotated Bibliography, Eugene H. Spafford, Stephen A. Weeber

Department of Computer Science Technical Reports

No abstract provided.

Migrating A C-Based Cad Tool To An Object-Oriented Database/C++ Environment: Conversion Costs And Performance Analysis, Mark A. Roth, Timothy M. Jacobs

AFIT Documents

his paper examines the potential of object-oriented databases to support complex design applications. To do this we migrated the Magic very large scale integrated (VLSI) circuit design tool written in the C language to a new environment in which Magic's existing file management code is replaced with a C++ language interface to the commercial object-oriented database management system (OODBMS) product Object Store. In our initial implementation we found the performance of this tool as implemented on the OODBMS to be marginally faster than the tool as currently implemented with a flat file system in several critical areas. Increased functionality, including …