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Showing 1 to 9 of 9 for “"john davis"”.
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S. John Davis: a thematic history of public education in Virginia as interpreted through the professional career of the sixteenth superintendent of public instruction
S. John Davis served as superintendent of public instruction for the Commonwealth of Virginia from 1979 to 1990. Dr. Davis worked for three governors--John N. Dalton, Charles S. Robb, and Gerald L. Baliles. His tenure in office marked an important era of innovation and change in Virginia's …
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An electro-mechanical acoustic imaging scanner assembly.
The design of "a combined electro-mechanical acoustic image scanning assembly is described. Various acoustic imaging system techniques have demonstrated an ability to form underwater images at distances greater than those obtained by optical means. The scanning assembly -utilizes a sixteen element …
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Oxidation of Carbon Monoxide Over Ceria and Alumina Supported Palladium Catalysts
<p>Palladium catalysts on both Al2O3 and CeO2, supports were studied for efficacy in low temperature carbon monoxide oxidation. Calcination temperatures were varied between 500-900°C for alumina supported catalysts and shown to have no significant difference in activity. X-Ray Photoelectron …
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Radiation-Hardened Delay-Insensitive Asynchronous Circuits for Multi-Bit SEU Mitigation and Data-Retaining SEL Protection
<p>Radiation can have highly damaging effects on circuitry, especially for space applications, if designed without radiation-hardening mechanisms. Delay-insensitive asynchronous circuits inherently have promising potentials in mitigating the effects of radiation due to their delay insensitivity. …
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Evaluation and Analysis of NULL Convention Logic Circuits
<p>Integrated circuit (IC) designers face many challenges in utilizing state-of-the-art technology nodes, such as the increased effects of process variation on timing analysis and heterogeneous multi-die architectures that span across multiple technologies while simultaneously increasing …
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Theoretical and Lidar Studies of the Density Response of the Mesospheric Sodium Layer to Gravity Wave Perturbations
Laser radar observations of the mesospheric sodium layer often reveal wavelike density fluctuations moving through the layer. It is often assumed that these features are a layer density response to gravity waves. The density response of atmospheric layers to gravity waves is developed in two forms; …
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An Economic Analysis of the Interrelationship Between Unionism and Technology: 1947-1957
Made available in DSpace on 2014-12-05T21:04:31Z (GMT). No. of bitstreams: 1 5902025.pdf: 12413729 bytes, checksum: 23bb93b58cc710c357304a42a08c6e7b (MD5) Previous issue date: 1959
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A Methodological Reconsideration of Early English-Indigenous Communication in Sixteenth Century Northeastern America
… with the South Baffin Inuit (1576-8), The Davis Encounters with the Greenland Inuit (1585-7) and the Roanoke Encounters with the Carolina Algonquin (1584-7). This study will serve as a point of departure for researchers to consider the uncertainties surrounding early communication and the …