Total Mission Concept
Ground System Process Control
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Collection InformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
AbstractEmbedded parallel processing provides unique advantages over sequential and symmetrical processing architectures. During the past decade, the architecture of ground control systems has evolved from utilizing sequential embedded processors to modular parallel, distributed, and/or symmetrical processing. The concept of utilizing embedded parallel processing exhibits key features such as modularity, flexibility, scalability, host independence, non-contention of host resources, and no requirement for an operating system. These key features provide the performance, reliability and efficiency while at the same time lowering costs. Proper utilization of embedded parallel processing on a host computer can provide fault tolerance and can greatly reduce the costs and the requirement of utilizing high-end workstations to perform the same level of real-time processing and computationally intensive tasks.
SponsorsInternational Foundation for Telemetering
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Mineral processing in a less developed country: Bauxite processing in Ghana.Agbolosoo, Emmanuel Kwami. (The University of Arizona., 1991)The purpose of this dissertation is to evaluate the feasiblity of alumina production in Ghana to replace imported alumina for the production of aluminum. It spells out the conditions which led to the existing bauxite-alumina-aluminum trade in the country. The structure of the economy of Ghana is examined to show the contributions of the important sectors to the total income of the country, and its dependence on a few export commodities for revenue. The plan to build a dam for the generation of hydroelectric power was linked to the establishment of an integrated aluminum industry based on the exploitation of domestic bauxite reserves. As the country could not finance the project alone, foreign assistance was sought. VALCO, a subsidiary of Kaiser and Reynolds, was formed to undertake the project. The agreement reached with VALCO was that a smelter would be built to use imported alumina for ten years, during which time a refinery would be built to feed the smelter from domestic sources. However, after ten years this could not be achieved, and the smelter continues to use imported alumina. A model of the world aluminum economy is used for analyzing the sensitivity of price to production and consumption expansion. The results show that industry demand is sensitive to the level of industrial activities in the developed countries, and less sensitive to the own price and cross price variables of aluminum in both the short and long run. On the other hand, supply is inelastic to the own price and the rate of capacity utilization in the short run, but elastic to both variables in the long run. An appraisal of opening a bauxite mine and an alumina refinery at Kibi is undertaken. The results show the levels of bauxite and alumina prices and the costs of construction at which the project is feasible. The shadow values and weights used are permittd to vary with changes in the economy's foreign trade and the balance of payments.
Towards understanding the processing of indirect speech acts: Reconsidering the standard pragmatic model of processingPolcar, Leah Elizabeth (The University of Arizona., 2003)This investigation tests whether a stage-type model of the processing of indirect speech acts is a fully explanatory model. A stage model, like the Standard Pragmatic Model (SPM), proposes that listeners understand the meaning of an indirect speech act by first determining direct meaning and then checking this meaning against context for sufficiency. It is only when direct meaning is found not to fully capture context that a listener proceeds to understand the meaning of an indirect speech act. This sort of model has been heavily criticized in the extant theoretical and empirical research, though this investigation shows much of this criticism to be faulty and/or irrelevant to indirect speech act processing. Here, minor revision of the SPM is proposed through the introduction of Cdirect and C indirect meanings that makes the modified SPM sensitive to issues of conventionality. Two experiments test this modified model (the MSPM). Results of the first experiment showed that the MSPM is the most explanatory model in explaining the processing of non-conventional indirect speech acts. The second experiment was designed to replicate an earlier experiment by Shapiro and Murphy (1993) and to investigate the influence of conventionality on the processing of indirect speech acts. The results of the conventionality analysis allow no clear conclusions about how conventional indirect speech acts are processed, but do call the results of the Shapiro and Murphy (1993) investigation into question. Additionally, some indirect proof is found that shows that conventionality influences the processing of indirect speech acts by making judgments of direct meaning difficult when conventional cues are present. Implications of these results are discussed and overall, the MSPM is found to be the best model for describing indirect speech act processing.
The effect of steam processing on the digestibility of barley and the effect of fine grinding, steam processing, and pressure cooking on the digestibility of milo by steersMehen, Stephen Mills, 1939- (The University of Arizona., 1966)