Digital Commons Network^™

Object Orientation In The Cim Environment, B. M. Higgins, J. B. Prater

Computer Science Technical Reports

Manufacturing industries are constantly looking for better ways to develop the software required to plan and control production processes. Experimental software is being developed using objectoriented program development techniques. There are many prototypes being used and tested at both academic and industrial institutions around the world.

The purpose of this paper is to examine a selection of these systems in order to highlight some of the main benefits which are being achieved by using object-oriented methods over the use of conventional approaches. Practical considerations are made concerning the long-term adoption of object-oriented methodologies in software development for Computer Integrated Manufacturing …

Incremental Learning Of Numeric Clusters In Classifier Systems, K. R. Hacke, D. C. St. Clair

Computer Science Technical Reports

Classifier systems are knowledge-based learning algorithms which take training instances as input and produce a set of rules as output Many classifier systems represent the knowledge they learn in the form of one or more decision trees. Accurate knowledgebase systems for a variety of domains have been constructed by generating decision trees using J. R. Quinlan's (1986) inductive algorithm ID3 and P. E. Utgoffs (1988) IDS. IDS is an incremental version of ID3.

Unfortunately, all these algorithms suffer from the inability to easily and effectively handle domains with numeric-valued attributes. Numeric attributes are those whose values are taken from a …

Investigation Of Threaded Code, K. E. Graves, Paul D. Stigall

Computer Science Technical Reports

The design, structure and performance of threaded code are examined through the development of a threaded. code classification system and the modification of the threaded code technique used by a Forth programming language implementation. The classification system distinguishes threaded code designs by three elements: the interpreter, the code structure and the reference method to routines. Threaded code designs from the literature are described using the new classification scheme. The threaded code techniques of variable depth indirect threaded code and token indirect token threaded code are examined in a Forth programming language system on an INMOS IMS T222 transputer. Their design …

Indifference Graphs And The Single Row Routing Problem, Peter J. Looges

Computer Science Theses & Dissertations

This thesis investigates the subclass of interval graphs known as indifference graphs. New optimal algorithms for recognition, center, diameter, maximum matching, Hamiltonian path and domination in indifference graphs are presented. The recognition algorithm produces a linear order with properties which allow the solution of the other problems in linear time. Indifference graphs are further applied to the single row routing problem which results in both sequential,. and parallel routing algorithms.

Route Adaptation And Persistence In Networks, Kenneth R. Rodemann

Department of Computer Science Technical Reports

No abstract provided.

Learning, Teaching, Optimization And Approximation, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

A Framework For Intelligent Parallel Compilers, Ko-Yang Want

Department of Computer Science Technical Reports

No abstract provided.

On The Impossibility Of Atomic Commitment In Multidatabase Systems, James G. Mullen, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.

Prediction Criteria For Successful Weaning From Respiratory Support: Statistical And Connectionist Analyses, K. Ashutosh, Hyungkeun Lee, Chilukuri K. Mohan, Sanjay Ranka, Kishan Mehrotra, C. Alexander

Electrical Engineering and Computer Science - Technical Reports

Objective: To develop predictive criteria for successful weaning from mechanical assistance to ventilation based upon simple clinical tests using discriminant analyses and neural network systems. Design: Retrospective development of predictive criteria and subsequent prospective testing of the same. Setting: Medical intensive care unit of a 300-bed teaching veterans administration hospital. Patients: Twenty-five ventilator-dependent elderly patients with acute respiratory failure. Interventions: Routine measurements of negative inspiratory force (NIF), tidal values (VT), minute ventilation (VE), respiratory rate (RR), vital capacity (FVC), and maximum voluntary ventilation (MVV), followed by weaning trial. Success or failure in 21 efforts analyzed by linear and quadratic discriminant …

An Overview And Evaluation: Computer Software To Aid Students In Prewriting, Writing, And Revision, Mary Lou Shomaker

Opportunities for Undergraduate Research Experience Program (OURE)

The research on computer software to aid inexperienced writers was done from May, 1990 through August, 1990, and involved examining software that would help students improve their writing. The softwares also were evaluated according to their value for use in computer assisted writing classes. The project had three objectives: 1) to evaluate software designed to aid the writer in the pre-writing, writing, and revising stages; 2) to identify the components of this type of software; 3) to recommend software for the beginning academic writer.

Computer Modeling Of A Liquid Fuel Spray, Clemin R. Goodin Jr.

Opportunities for Undergraduate Research Experience Program (OURE)

The initial phase of this project involved manipulation of a lengthy FORTRAN computer code named "Kirwan." The code originated from England many years ago and was transferred to UMR by Dr. Drallmeier. Dr. Drallmeier had the code on a series of 5.25 inch floppy diskettes and the objective of the project was to load the code on to the Apollo computer system and be able to use it....The second phase of the project was begun in early November 1990 and is currently ongoing. The objective of this project is to predict "Rosin-Rammler" (RR) distribution equations for a fuel spray, given …

Using Software To Demonstrate Kinematics Of Gear Sets, John F. Hall

Opportunities for Undergraduate Research Experience Program (OURE)

The research was done in the area of developing software which could be used to demonstrate the motion of gears. To demonstrate this motion involved learning about programming using graphics. Engineering skills were used in the programming in various ways. One way was in developing and implementing the equations and theory. The more critical engineering aspect of this project is in determining what is effective in demonstrating the kinematic principles associated with gear sets.

The programs will be a helpful aid in showing students what is happening with the motion of gear sets. Not only will instructors be allowed to …

Suggestions For Improvements In Current Computer Image Processing Methods In Detection And Quantification Of The Severity Of Atrophic Rhinitis In Pigs, Jimmy Yu

Opportunities for Undergraduate Research Experience Program (OURE)

This paper investigates several techniques to aid in the utilization of computer image processing methods to detect and quantify the severity of atrophic rhinitis in pigs. An algorithm for reducing the complexity of matrix multiplications from O(n³) to O(n^2.81) is explored. A one-pixel-wide edge detection method is also studied. These techniques are considered for improving the accuracy, repeatability, and speed of existing detection and quantification methods.

Performance Prediction For Distributed Load Balancing In Multicomputer Systems, Ishfaq Ahmad, Arif Ghafoor, Kishan Mehrotra

Electrical Engineering and Computer Science - Technical Reports

Computing literature has being flooded recently with a plethora of dynamic load balancing strategies for multicomputer systems. The diversity of many strategies and their dependence on a number of parameters has made it difficult to compare their effectiveness on a unified basis. Not only does each strategy consider a different environment, but the simplified assumptions obscure the relative merits and demerits of each strategy. This paper presents a solution to compare different load balancing schemes on a unified basis. Our approach, which is an integration of simulation, statistical and analytical experiments, takes into account the fundamental system parameters that can …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, April 1991, 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.

On Serializability Of Multidatabase Transactions Through Forced Local Conflict, Dimitrios Georgakopoulos, Marek Rusinkiewicz, Amit P. Sheth

Kno.e.sis Publications

The main difficulty in enforcing global serializability in a multidatabase environment lies in resolving indirect transitive conflicts between multidatabase transactions. Indirect conflicts introduced by local transactions are difficult to resolve because the behavior or even the existence of local transactions is not known to the multidatabase system. To overcome these problems, we propose to incorporate additional data manipulation operations in the subtransactions of each multidatabase transaction. We show that if these operations create direct conflicts between subtransactions at each participating local database system, indirect conflicts can be resolved even if the multidatabase system is not aware of their existence. Based …

An Efficient Semantic Query Optimization Algorithm, Hwee Hwa Pang, Hongjun Lu, Beng Chin Lu

Research Collection School Of Computing and Information Systems

An efficient semantic query optimization algorithm is proposed, in which all possible transformations are tentatively applied to the query. Instead of physically modifying the query, the transformation process classifies the predicates into imperative, optional or redundant. At the end of the transformation process, all the imperative predicates are retained while the redundant predicates are eliminated. Optional predicates are retrained or discarded based on the estimated cost/benefit of retaining them. The issue of the grouping of semantic constraints to reduce the overhead of retrieving constraints and checking whether each constraint is relevant to the current query is also addressed. Based on …

Simulator For Concurrent Processing Data Flow Architectures, Mahyar R. Malekpour

Electrical & Computer Engineering Theses & Dissertations

A software simulator capable of simulating execution of an algorithm graph on a given system under the Algorithm To Architecture Mapping Model (ATAMM) rules is presented in this thesis. ATAMM is capable of modeling the execution of large-grained algorithms on distributed data flow architectures. Investigating the behavior and determining the performance of an ATAMM based system requires the aid of software tools. The ATAMM Simulator presented in this thesis is capable of determining the behavior, performance, and reliability of a system without having to build a hardware prototype. Case studies are performed on four algorithms to demonstrate the capabilities of …

Determining Maximum K-Width-Connectivity On Meshes, Susanne E. Hambrusch, Frank Dehne

Department of Computer Science Technical Reports

No abstract provided.

A Parallel Algorithm For Computing Invariants Of Petri Net Models, Dan C. Marinescu, Mike Beaven, Ryan Stansifer

Department of Computer Science Technical Reports

No abstract provided.

A Purdue University Course In The History Of Computing, Saul Rosen

Department of Computer Science Technical Reports

No abstract provided.

Interoperability In Multidatabase Systems, Omran A. Bukhres, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.

Transaction Models For Advanced Database Applications, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.

Relax: A Software Platform For Pde Interface Relaxation Methods, Scott Mcfaddin, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

On Alternate Solid Representations And Their Uses, Christoph M. Hoffmann, George Vanĕček

Department of Computer Science Technical Reports

No abstract provided.

Maintaining Consistency Of Interdependent Data In Multidatabase Systems, Amit P. Sheth, Yungho Leu, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.

Global Commitment In Multidatabase Systems, Ahmed K. Elmagarmid, Jin Jing, Won Kim

Department of Computer Science Technical Reports

No abstract provided.

The Boundary Element Method Applied To The Two Dimensional Stefan Moving Boundary Problem, Donald C. Vosika

Theses and Dissertations

This thesis considers problems for which the boundary is not known before the problem is solved and must be determined as part of the solution. We consider a time dependent problem which results in a moving boundary. We look at the heat conduction/diffusion equation in one and two spatial dimensions. We use Green's Theorem to yield a Volterra boundary integral equation which involves an unknown function on the moving boundary. We use the boundary element method to obtain a solution. Graphical results for the two dimensional problem are presented.

A Computer Simulation Of Braitenberg Vehicles, Eric B. Werkowitz

Theses and Dissertations

In his treatise, Vehicles: Experiments in Synthetic Psychology, Valentino Braitenberg used simple, autonomous vehicle designs to illustrate the principles behind animal nervous system organization and operation. The goal of this effort was to produce a computer program to allow a researcher to experiment with these concepts and to analyze their performance using methods employed by experimental psychologists. The resulting program allows the user to design vehicles that respond to changes in their environments and that have the ability to adapt their behavior, using a learning algorithm developed by Teuvo Kohonen. The vehicle designer is free to select sensor attributes, …

Eliminating Extraneous Solutions In Curve And Surface Operations, Christoph M. Hoffmann, Pamela J. Vermeer

Department of Computer Science Technical Reports

No abstract provided.