A multi-level data-flow architecture for signal and data processing applications. Final report (open access)

A multi-level data-flow architecture for signal and data processing applications. Final report

A grant was awarded to us by the Department of Energy, Office of Energy Research, in May 1987 to support the design and performance analysis of a large grain data-driven multiprocessor system for numerical applications. The basic idea of the work is to apply the data-driven principles of execution at a more appropriate level than conventional ``atomic`` instructions. For this purpose, a level such as that of vector operations was under study. This document represents the final report concerning the results of the research supported by this grant. The goals of the project entailed an analysis of Partial Differential Equation solvers on data-driven environments, a preliminary design of our multi-level architecture, an in-depth study of some of the mechanisms of execution, and a design of the software environment. As enumerated in the original proposal, our work has yielded results in three different domain: Specifications of the application programs; design of the general concepts of the architecture and simulation; implementation of a translating environment; and we discuss each of the above items and examine specific research results.
Date: September 2, 1993
Creator: Gaudiot, J. L.
System: The UNT Digital Library
JBK-75 stainless steel machinability study (open access)

JBK-75 stainless steel machinability study

The study on forgings characterized machinability of the material by varying cutting speeds and feedrates utilizing four tools for the roughing operation and four tools for the semi-finish operation. Tools tested were obtained from four manufacturers. Twelve parts were machined utilizing an experimental design to determine all possible interactions between cutting speeds and feedrates. To evaluate the machinability of the material, quantitative measures in tool life, tool wear, surface finish, chip control, and material removal rates were analyzed. Benefits gained from this study are: higher material removal rates, longer tool life, minimal tool wear, improved chip control and reliability, increased productivity, and cost minimization.
Date: September 2, 1993
Creator: McManigle, A. P. & Simonis, A. W.
System: The UNT Digital Library
DOE lockout/tagout safety handbook (open access)

DOE lockout/tagout safety handbook

In September 1989, the Occupational Safety and Health Administration (OSHA) issued a final ruling on lockout/tagout procedures. This ruling became effective in January 1990 and was eventually incorporated into the Code of Federal Regulations. The purpose of these procedures is to safeguard employees from hazardous energy while performing service or maintenance activities on machines and equipment. Approximately 39 million workers are protected by lockout/tagout procedures in general industry. OSHA estimates that adherence to the requirements in lockout/tagout procedures will eliminate nearly two percent of all workplace deaths. A lockout/tagout program is essential to the safe operation of all Department of Energy (DOE) facilities. The program outlined in this document consists of energy-control procedures, employee training and periodic inspections, and establishes the minimum requirements for lockout/tagout of equipment or system-energy sources that could cause injury to personnel. Because serious consequences can occur due to a lack of understanding and improper administration of this program, this document also includes a method for: Providing guidance for the control of hazardous energy, protecting employees from injury, defining responsibilities, and protecting equipment and facilities from damage.
Date: September 2, 1993
Creator: Ulm, B.
System: The UNT Digital Library
Design of a high activity and selectivity alcohol catalyst. Eleventh quarterly report, February 7, 1993--May 7, 1993 (open access)

Design of a high activity and selectivity alcohol catalyst. Eleventh quarterly report, February 7, 1993--May 7, 1993

The apparatus used for ammonia saturation and TPD (=temperature programmed desorption?) testing was modified to avoid repeated injections of NH{sub 3}. Saturation and TPD results are presented for potassium-doped {gamma}-alumina. In order to examine effects of Mo oxide promotion on catalytic activity of alumina-supported Rh catalyst, additional samples of Rh/{gamma}-Al{sub 2}O{sub 3} and Rh-Mo/{gamma}-Al{sub 2}O{sub 3} have been synthesized. 2 tabs, 3 figs.
Date: September 2, 1993
Creator: Foley, H. C. & Mills, G. A.
System: The UNT Digital Library