published_or_final_version / Industrial Engineering / Master / Master of Philosophy

The possibilities of increased responsiveness, throughput, availability, reliability and cost-effectiveness invite investigation of the hardware and software design of multiprocessor computing systems. This thesis describes an experiment in the design of a multiprocessor operating system based on the distribution of kernel functionality among the processors. One of the design objectives was to build a system capable of supporting real-time applications and a general-purpose, multi-user environment concurrently. The hardware base is a simple, closely-coupled, star network of autonomous computers constructed from "off-the-shelf" boards. The operating system developed, named Distributed Verex, is an extension of Verex which is a descendant of Thoth. The Verex kernel provides an environment of processes and inter-process communication via message-passing on a uniprocessor computer. Distributed Verex provides the same environment uniformly and transparently throughout the multiprocessor system. Distributed Verex has been implemented and is undergoing continuing development. Initial performance measurements are given. / Science, Faculty of / Computer Science, Department of / Graduate

Digitized by Kansas Correctional Industries

Digitized by Kansas Correctional Industries

No description available.

No description available.

Typescript (photocopy) / 259, 87 p. : ill. (some col.), charts ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Electrical Engineering, 1978

Thesis (Ph.D.)-- University of Adelaide, Dept. of Electrical Engineering, 1978. / Typescript (photocopy).

Thesis (M.Eng.Sc. 1978) from the Department of Electrical Engineering Science, University of Adelaide.

Conventional modal analysis is performed using FFT Analyzers with modal analysis software developed by one of many test/analysis software vendors. The analysis is performed in the frequency domain using frequency response functions. A recent advancement in modal analysis involves analyzing the measured free response of a structure in the time domain. The Ibrahim Time Domain (ITD) Algorithm is such a method which has been used and verified at government environmental test facilities. The ITD is an accurate numeric solution. Minimal operator interaction is required for proper performance of the algorithm. The results of the ITD Algorithm are far superior to those of conventional frequency response methods when the test structure has closely spaced or heavily damped modes of vibration. Currently, the ITD exists only on mainframe computers. The purpose of this research is to adapt the numeric routine to a mini-computer (DEC PDP-11/34). In this way, the ITD Algorithm could be incorporated in any environmental test facility with access to a mini-computer.