A remote job control system for the DRAFT machine is developed. It provides the user a convenient remote computing environment with facilities for job submission, a means of servicing the job queue on a first-come-first-serve basis, and usage reporting. It provides a logging facility to keep track of the user's...
This paper discusses the design, construction, and use of a prototype expert system shell, EXE. EXE is non-conventional in that it does not provide a traditional forward or backward chaining inference mechanism. Instead, it allows the domain expert to control the logic flow of the system in a dynamic fashion....
Two prevalent models of parallel programming are data parallelism and task parallelism. Data parallelism is the simultaneous application of a single operation to a data set. This model fits best with regular computations. Task parallelism is the simultaneous application of possibly different operations to possibly different data sets. This fits...
Serializability is unnecessarily strict for real-time systems because most transactions in such systems occur periodically and changes among data values over a few consecutive periods are often insignificant. Hence, data values produced within a short interval can be treated as if they are "similar" and interchangeable. This notion of similarity...
This thesis presents a study of applications and techniques for molecular dynamics simulations. Three studies are presented that are intended to improve our ability to simulate larger systems more realistically. A comparison study of two- and three-body potential models for liquid and amorphous Si0₂ is presented. The structural, vibrational, and...
CREEDA (Crop Rotation Economic and Environmental Impact Decision Aid) is a Windows application for assessing economic and environmental impacts of agricultural activities. In implementing it, we extended the ProCosts database and incorporated the RUSLE (Revised Universal Soil-Loss Equation) application and the SCI (Soil Conditioning Index) application as COM components. ProCosts,...
Algorithms and MP1 parallel C programs are developed for constructing wavelet expansions of long-range potential functions with O(n) time complexity. A new high frequency correction algorithm is introduced. The emphasis is on the common potential expansion encountered in physics that behaves as l/r in three-dimensions. The central B-Splines are used...
A new technique of implementing the object-oriented language Little Smalltalk is developed using tuple space communication of Linda. In this implementation, the language's abstract constructs such as object, class, and method are naturally mapped into tuple space. Since Linda's tuple space is designed to facilitate parallel processing, this implementation technique...
A translator has been designed and implemented which generates parallel code for a long instruction word parallel computer with local memories. Its main methods are to translate the sequential source code into single assignment, two-operand form, and to then assign the operations to processors so as to minimize the number...
The problem of handling dependent evidence is an important practical issue for applications of reasoning with uncertainty in artificial intelligence. The existing solutions to the problem are not satisfactory because of their ad hoc nature, complexities, or limitations. In this dissertation, we develop a general framework that can be used...