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Alloy Scattering In P-Type Alxga1-Xas, David C. Look, D. K. Lorance, J. R. Sizelove, C. E. Stutz, K. R. Evans, D. W. Whitson Jan 1992

Alloy Scattering In P-Type Alxga1-Xas, David C. Look, D. K. Lorance, J. R. Sizelove, C. E. Stutz, K. R. Evans, D. W. Whitson

Physics Faculty Publications

The hole mobility of Be‐doped ( ~ 2 × 1017 cm-3) AlxGa1-xAs, for x=0–1, is analyzed both theoretically and experimentally. Alloy scattering is very important, and in fact reduces the hole mobility from 150 to less than 90 cm2/V s at x=0.5. The main parameter in the alloy scattering formulation, the alloy potential Eal, is found to be about 0.5 eV for p‐type AlxGa1-xAs.

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Densities And Vibrational Distribution Of H3+ In The Jovian Auroral Ionosphere, Y. H. Kim, Jane L. Fox, H. S. Porter Jan 1992

Densities And Vibrational Distribution Of H3+ In The Jovian Auroral Ionosphere, Y. H. Kim, Jane L. Fox, H. S. Porter

Physics Faculty Publications

Observations of the H3+ infrared emission at 2 and 4 μm have suggested that H3+ is in local thermodynamic equilibrium (LTE) in the region of the Jovian ionosphere from which the emissions originate. We have tested this assumption by calculating the vibrational distribution of H3+ over the altitude range of 350 to 1500 km above the methane cloud tops (1 to 4 × 10−3 μbar). We have constructed a model of the Jovian auroral ionosphere in which the neutral temperatures are enhanced over those of the mid-latitude ionosphere, as suggested by observations and …

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Anne B. Shearer Interview, University Division, Wright State University, Alyce Earl Jenkins, Ann B. Shearer Jan 1992

Anne B. Shearer Interview, University Division, Wright State University, Alyce Earl Jenkins, Ann B. Shearer

Profiles of African-Americans: Their Roles in Shaping Wright State University

Alyce Jenkins interviewed Anne B. Shearer from The University Division at Wright State in 1992. In the interview Shearer discussed her education, how she came to Wright State, her time there, and more.

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Symmetric Noncooperative Models Of Innovation: A Simulation Study, Noel Mckinney Jan 1992

Symmetric Noncooperative Models Of Innovation: A Simulation Study, Noel Mckinney

Masters Culminating Experiences (1993-2011)

This paper examines two symmetric noncooperative models of innovation: the model by Loury (1979) and the model by Lee and Wilde (1980). In the Loury model, investment in research and development is treated as an "up front" expenditure, while in the Lee and Wilde model the investment in research and development is treated as an ongoing expenditure flow that occurs throughout the research and development process. The effect that rivalry from competing firms has on the research and development investment of a given firm is studied through simulations using the two models. The simulations show that the relationship between research …

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A Comparison Of The Naval Air Systems Command Model Iii Method With The United States Air Force Repair Level Analysis Method Of Level Of Repair Analysis For Recommendation Of A Lora Methodology On The Joint Service V-22 Osprey Program, John David Driessnack Jan 1992

A Comparison Of The Naval Air Systems Command Model Iii Method With The United States Air Force Repair Level Analysis Method Of Level Of Repair Analysis For Recommendation Of A Lora Methodology On The Joint Service V-22 Osprey Program, John David Driessnack

Masters Culminating Experiences (1993-2011)

In the past 30 years Life Cycle Cost (LCC) and Level of Repair Analysis (LORA) has been developed within the Department of Defense (DoD). The LORA process, outlined in the new Military Standard (MIL-STD) 1390D, is required to be accomplished in each DoD weapon system acquisition program. The Standard outlines 13 different service peculiar models. The Joint V-22 Program must determine an effective LORA methodology that appropriately considers Service unique requirements while limiting the need to run both the NAVAL AIR SYSTEMS COMMAND (NAVAIRSYSCOM) Model III and the Air Force RLA methods of LORA. The two methods, compared by relating …

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On The Asymptotic Behavior And Radial Symmetry Of Positive Solutions Of Semilinear Elliptic Equations In R N Ii. Radial Symmetry, Yi Li, Wei-Ming Ni Jan 1992

On The Asymptotic Behavior And Radial Symmetry Of Positive Solutions Of Semilinear Elliptic Equations In R N Ii. Radial Symmetry, Yi Li, Wei-Ming Ni

Mathematics and Statistics Faculty Publications

The main purpose of this paper is to prove Theorems 1 and 2 of the preceding paper, Part I, together with their extensions and related symmetry results. To make this part essentially self-contained, we shall apply the method developed in Section 2 to equations with radial symmetry. Combining the asymptotic behavior and the "moving plane" technique, we are then able to obtain the desired results.

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Specifying Interdatabase Dependencies In A Multidatabase Environment, Marek Rusinkiewicz, Amit P. Sheth, George Karabatis Dec 1991

Specifying Interdatabase Dependencies In A Multidatabase Environment, Marek Rusinkiewicz, Amit P. Sheth, George Karabatis

Kno.e.sis Publications

The problem of interdatabase dependencies and the effect they have on applications updating interdependent data are addressed. A model that allows specifications of constraints among multiple databases in a declarative fashion is proposed. The separation of the constraints from the application programs facilitates the maintenance of data constraints and allows flexibility in their implementation. It allows investigation of various mechanisms for enforcing the constraints, independently of the application programs. By grouping the constraints together, it is possible to check their completeness and discover possible contradictions among them. The concepts of polytransactions, which use interdatabase dependencies to generate a series of …

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Board Of Trustees Meeting Minutes, November 21-22, 1991 Nov 1991

Board Of Trustees Meeting Minutes, November 21-22, 1991

Board of Trustees Minutes

Minutes from the Wright State University Board of Trustees Meeting held on November 21-22, 1991.

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Wright State University Raiders Basketball Media Guide 1991-1992, Wright State University Athletics Nov 1991

Wright State University Raiders Basketball Media Guide 1991-1992, Wright State University Athletics

Athletics Publications

A media guide for Wright State University's 1991-1992 Men's Basketball team. This guide includes photographs, player stats, game results, and records.

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The Guardian, November 07, 1991, Wright State University Student Body Nov 1991

The Guardian, November 07, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 7, Number 8, November 1991, College Of Engineering And Computer Science, Wright State University Nov 1991

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 7, Number 8, November 1991, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

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The Guardian, October 31, 1991, Wright State University Student Body Oct 1991

The Guardian, October 31, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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The Guardian, October 24, 1991, Wright State University Student Body Oct 1991

The Guardian, October 24, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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The Guardian, October 17, 1991, Wright State University Student Body Oct 1991

The Guardian, October 17, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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Board Of Trustees Meeting Minutes, October 3-4, 1991 Oct 1991

Board Of Trustees Meeting Minutes, October 3-4, 1991

Board of Trustees Minutes

Minutes from the Wright State University Board of Trustees Meeting held on October 3-4, 1991.

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The Guardian, October 03, 1991, Wright State University Student Body Oct 1991

The Guardian, October 03, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 7, Number 7, October 1991, College Of Engineering And Computer Science, Wright State University Oct 1991

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 7, Number 7, October 1991, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

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A Mathematical Model For Outgassing And Contamination, Weifu Fang, Meir Shillor, E. Stahel, E. Epstein, C. Ly, J. Mcniel, E. Zaron Oct 1991

A Mathematical Model For Outgassing And Contamination, Weifu Fang, Meir Shillor, E. Stahel, E. Epstein, C. Ly, J. Mcniel, E. Zaron

Mathematics and Statistics Faculty Publications

A model for the mathematical description of the processes of outgassing and contamination in a vacuum system is proposed. The underlying assumptions are diffusion in the source, convection and diffusion in the cavity, mass transfer across the source-cavity interface, and a generalization of the Langmuir isotherm for the sorption kinetics on the target. Three approximations are considered where the asymptotic behavior of the model for large time is shown as well as the dependence and sensitivity of the model on some of the parameters. Some numerical examples of the full model are then presented together with a proof of the …

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Alumnews, Fall 1991, Alumni Association, Wright State University Oct 1991

Alumnews, Fall 1991, Alumni Association, Wright State University

AlumNews

Twenty-four page issue of the AlumNews newsletter. This newsletter focuses on news about programs, events, and activities for alumni from Wright State University.

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The Guardian, September 19, 1991, Wright State University Student Body Sep 1991

The Guardian, September 19, 1991, Wright State University Student Body

The Guardian Student Newspaper

Twenty-eight page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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The Guardian, September 5, 1991, Wright State University Student Body Sep 1991

The Guardian, September 5, 1991, Wright State University Student Body

The Guardian Student Newspaper

Twenty-eight page issue of The Guardian, the official student-run newspaper for Wright State University. The Guardian has been published regularly since March of 1965.

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The Guardian, September 05, 1991, Wright State University Student Body Sep 1991

The Guardian, September 05, 1991, Wright State University Student Body

The Guardian Student Newspaper

Twenty-eight page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 7, Number 6, September 1991, College Of Engineering And Computer Science, Wright State University Sep 1991

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, Volume 7, Number 6, September 1991, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

An eight page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

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On Compensation And Conductivity Models For Molecular-Beam-Epitaxial Gaas Grown At Low-Temperature, David C. Look Sep 1991

On Compensation And Conductivity Models For Molecular-Beam-Epitaxial Gaas Grown At Low-Temperature, David C. Look

Physics Faculty Publications

Molecular‐beam‐epitaxial GaAs grown at 200 °C has an extremely high (≳1019 cm−3) concentration of AsGa defects and, after an anneal at 550–600 °C, a high concentration of As precipitates. The relative roles of the AsGa defects and As precipitates in compensation and conductivity is controversial. Here criteria are developed to distinguish between two existing models.

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Clark E. Beck Interview, College Of Engineering And Computer Sciences, Wright State University, Alyce Earl Jenkins, Clark E. Beck Aug 1991

Clark E. Beck Interview, College Of Engineering And Computer Sciences, Wright State University, Alyce Earl Jenkins, Clark E. Beck

Profiles of African-Americans: Their Roles in Shaping Wright State University

Alyce Jenkins interviewed Clark E. Beck, Assistant Dean for the College of Engineering and Computer Science at Wright State University on August 9, 1991. In his interview Beck discussed the history and current developments of the Wright State Engineering Pre-College Program (Wright STEP). He also discussed his early career at Wright Patterson Air Force Base, his education history, and more.

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Boundary C1, Α Regularity For Variational Inequalities, Fang-Hua Lin, Yi Li Aug 1991

Boundary C1, Α Regularity For Variational Inequalities, Fang-Hua Lin, Yi Li

Mathematics and Statistics Faculty Publications

No abstract provided.

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The Guardian, July 18, 1991, Wright State University Student Body Jul 1991

The Guardian, July 18, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of the guardian, the official student-run newspaper for wright state university. the guardian has been published regularly since march of 1965.

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The Guardian, July 18, 1991, Wright State University Student Body Jul 1991

The Guardian, July 18, 1991, Wright State University Student Body

The Guardian Student Newspaper

Sixteen page issue of The Guardian, the official student-run newspaper for Wright State University. The Guardian has been published regularly since March of 1965.

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Analysis And Finite-Element Approximation Of Optimal-Control Problems For The Stationary Navier-Stokes Equations With Distributed And Neumann Controls, Max D. Gunzburger, L. Hou, Tom Svobodny Jul 1991

Analysis And Finite-Element Approximation Of Optimal-Control Problems For The Stationary Navier-Stokes Equations With Distributed And Neumann Controls, Max D. Gunzburger, L. Hou, Tom Svobodny

Mathematics and Statistics Faculty Publications

We examine certain analytic and numerical aspects of optimal control problems for the stationary Navier-Stokes equations. The controls considered may be of either the distributed or Neumann type; the functionals minimized are either the viscous dissipation or the L4-distance of candidate flows to some desired flow. We show the existence of optimal solutions and justify the use of Lagrange multiplier techniques to derive a system of partial differential equations from which optimal solutions may be deduced. We study the regularity of solutions of this system. Then, we consider the approximation, by finite element methods, of solutions of the …

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Infrared Quenching And Thermal Recovery Of Thermally Stimulated Current Spectra In Gaas, Z-Q. Fang, David C. Look Jul 1991

Infrared Quenching And Thermal Recovery Of Thermally Stimulated Current Spectra In Gaas, Z-Q. Fang, David C. Look

Physics Faculty Publications

Thermally stimulated current (TSC) spectra stimulated by infrared (hν≤1.12 eV) light at 90 K have been used to study the photoquenching and thermal recovery of several dominant TSC peaks in Ga‐rich, semi‐insulating GaAs. The filling‐pulse‐length dependence of the quenching for these traps, and the temperature dependence of their recovery are clearly identified with the ground‐to‐metastable state transition of EL2. The data are consistent with the traps having a direct association with EL2 or EL2∗ rather than an indirect association which could result from a change in the dominant‐free carriers as EL2 transforms to EL2∗. If so, they likely …

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