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Impulse, Kara Donohoe

Impulse (Jerome J. Lohr College of Engineering Publication)

Features:
[Page 2] Astrophysicist's research seeks to correct "earth colors"
[Page 3] Classroom building vacated
[Page 4] Engineering students "cap" their education through practical experience
[Page 6] Scientists from Egypt, West Africa learn mapping by satellite
[Page 7] Tillage research seeks to reduce compaction
[Page 8] Lap-Top computer controls fertilizer rates
[Page 9] Engineering sculpture dedicated
[Page 10] Research seeks to improve structural design of post-frame buildings
[Page 11] Buckley dies of cancer a t 65
[Page 12] Sencore donates "state of the art" test equipment
[Page 13] Boisjoly headlines ethics seminar; 600 attend
[Page 14] Mechanical engineer stays in …

The Development Of The Smelting Industry In The Central Salt Lake Valley Communities Of Midvale, Murray, And Sandy Prior To 1900, Charles E. Hughes

Theses and Dissertations

This thesis found that the three communities of Midvale, Murray, and Sandy were the center of the smelting industry in the Salt Lake Valley. These communities became the center of smelting because of their central location, the readily available water supply, and the availability of an inexpensive, efficient transportation system to ship the bullion. The smelters were surrounded by two major mountain ranges which provided a ready supply of good lead, silver, and copper ore.

The development of the smelting industry followed three separate phases or periods. The first phase was one of experimentation or period of discovery, in which …

Enhancing An Engineering Learning Environment, Paul J. Palazolo, Patricia Brackin

Journal of the Arkansas Academy of Science

No abstract provided.

Spatial Control Of Crop Inputs Via Laptop And Typical Field Travel, Joseph Alan Schumacher

Electronic Theses and Dissertations

Field Grid Sense (FGS) is a system developed for use with a laptop computer to control crop production inputs. FGS can be used for spatially controlling and recording field inputs according to regional requirements within the field. Location is identified via the travel lanes formed during field operations. Grid areas within lanes are formed by measuring from the beginning of each lane to the start of each grid within the lane. Distance measurements are reset at the beginning of each lane in order to eliminate accumulated distance error in the field. A fifth wheel, which runs in the smooth path …

Doctor Of Arts In Information Science, Nova University

College of Engineering and Computing Course Catalogs

No abstract provided.

Master Of Science In Computer Science, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

Computer Education Complete Masters Program, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

Bachelors In Computer Science Course Descriptions, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

Center For Computer And Information Sciences Application Package 1990, Nova Southeastern University

College of Engineering and Computing Course Catalogs

No abstract provided.

Mass-Transfer Measurements Of Copper Deposition In A Fluosilicate Electrolyte, D. Uceda, Thomas J. O'Keefe, E. Cole

Materials Science and Engineering Faculty Research & Creative Works

The electrodeposition of copper from a fluosilicate electrolyte has been investigated by electrochemical techniques, x-ray diffraction, and scanning electron microscopy. The diffusion coefficient of cupric ion in a fluosilicate solution has been determined with the aid of a rotating disk electrode using the mixed control Levich equation. Gold (Au⁺³) was used as a tracer to evaluate the mass transport properties of the system. The polarization behavior of the electrolyte was measured in the presence and absence of gas sparging on a vertical stationary electrode to study the effect of the mass transport contribution. Sound copper deposits were obtained …

Simulation Of Free Radical Reactions In Biology And Medicine: A New Two-Compartment Kinetic Model Of Intracellular Lipid Peroxidation, Charles F. Babbs, Melissa Gale Steiner

Weldon School of Biomedical Engineering Faculty Publications

To explore mechanisms of free radical reactions leading to intracellular lipid peroxidation in living systems, we developed a computational model of up to 109 simultaneous enzymatic and free radical reactions thought to be involved in the initiation, propagation, and termination of membrane lipid peroxidation. Rate constants for the various reactions were obtained from the published literature. The simulation model included a lipid membrane compartment and an aqueous cytosolic compartment, between which various chemical species were partitioned. Lipid peroxidation was initiated by the iron-catalyzed, superoxide-driven Fenton reaction. A "C"-language computer program implemented numerical solution of the steady-state rate equations for concentrations …

Free Radicals And The Etiology Of Colon Cancer, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This hypothesis paper reviews diverse evidence suggesting that intracolonic production of oxygen radicals may play a role in carcinogenesis. The hypothesis began to evolve when the author made the chance discovery that 1/10,000 dilutions of feces generated detectable quantities of highly reactive hydroxyl radicals (HO). The rate of HO formation, detected using DMSO as a molecular probe, was quite remarkable, corresponding to that which would be produced by over 10,000 rads of gamma irradiation per day, absorbed in the periphery of the fecal mass adjacent to the mucosa. The relatively high concentrations of iron in feces, together with the ability …

Surface Passivation Effects Of As2s3 Glass On Self‐Aligned Algaas/Gaas Heterojunction Bipolar Transistors, H. L. Chuang, M. S. Carpenter, Michael R. Melloch, Mark S. Lundstrom, E. Yablonovitch, T. J. Gmitter

Department of Electrical and Computer Engineering Faculty Publications

A recently developed As₂S₃ chemical treatment was used to passivate the perimeters of self‐aligned heterojunction bipolar transistors (HBTs). The As₂S₃chemical treatment significantly lowered the base current resulting in a two order of magnitude reduction in the collector current density at which dc current gain was observed (β=1). No degradation with time has been observed in the electrical characteristics of the chemically treated HBTs. This absence of degradation is attributed to the impermeability to oxygen of the As2S3 glass which coats the perimeter of the HBT after chemical treatment.

Reconnaissance-Level Alternative Optimal Groundwater Use Strategies, Richard C. Peralta, Bithin Datta

Civil and Environmental Engineering Faculty Publications

This study develops regionally optimal ground-water extraction strategies. Alternative explicit planning objectives arc: (1) Maximize total pumping from the underlying aquifer while causing the evolution of a steady potentiometric: surface: and (2) maintain a prespecified target potentiometric surface. Implicit objectives involve controlling stream/aquifer interflow and water flow across a state boundary, and attempting to avoid poss disruption of current cropping patterns. Models, bounds, constraints, and data arc: formulated. Alternative optimal strategies and the rationale for preferring one strategy arc: presented for a region in Arkansas. The objective of maintaining the relatively unstressed target potentiometric: surl1ce yields politically and socially unacceptable …

Evaluation Of The Cost-Effectiveness Of Pavement Surface Maintenance Activities, Ibrahim Moussa Mouaket, Abdullah Al-Mansour, Kumares C. Sinha

JTRP Technical Reports

This study covers pavement surface maintenance on three surface types: rigid, flexible and composite (asphalt overlay on rigid pavement). It addresses 3 main issues as follows: 1) Do routine maintenance activities make a difference in terms of pavement serviceability? If yes, how much? 2) Are chip and sand seal coating cost-effective? What is their optimal timing? 3) What management criteria should be used as a guide to make seal coating decisions on specific roadways? In resolving Issue #1, a stratified 2-stage sample of observational data was used in a statistical before/after comparison. SAS-General Linear Model was used due to its …

An Electronic Surveillance And Control System For Traffic Management On The Borman Expressway, Part I : Executive Summary, Michael J. Cassidy, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

An Electronic Surveillance And Control System For Traffic Management On The Borman Expressway, Part I, Michael J. Cassidy, Kumares C. Sinha

JTRP Technical Reports

No abstract provided.

The Parallel Implementation Of The Waveform Relaxation Method For Transient Stability Simulations, Marija D. Ilić, Mariesa Crow

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, the authors extend the results of their earlier paper on waveform relamtion (WR), which is a parallel algorithm for transient stability analysis. The WR algorithm is extended to a structure-preserving power system model in which the loads are retained. This results in a system of differential/ algebraic equations (DAEs). Power systems exhibit several unique dynamic properties which may be exploited in an advantageous manner by the WR algorithm. This leads to a greater computational efficiency than most other direct methods of simulation. This paper presents several theoretical results as well as computational results on parallel implementation.

Application Of The Results Of Carbon Pellet Modeling To The Problem Of Plasma Penetration, L. L. Vahala, A. G. El Cashlan, G. A. Gerdin, P. B. Parks

Electrical & Computer Engineering Faculty Publications

The assumptions of the evaporation model for low-Z pellets interacting with magnetic fusion plasmas developed by Parks are tested. These assumptions are that the vapor density profile in the region adjacent to the pellet surface falls off with radial distance as r^-α , where 5 <α<6, and that the ionization time for the transition between charge states ז_f (i.e., for r < ~3 sonic radii). The first assumption is tested by solving a two-parameter eigenvalue problem for the evaporation cloud in the region interior to the sonic radius; the results are found to be consistent with the low-Z evaporation model. The second assumption, that ז_zi «ז_f, is tested at the sonic radius using the results from atomic physics and the low-Z evaporation model. It is found that indeed ז_zi «ז_f for plasmas with parameters close to thermonuclear conditions (e.g. CIT), but not for those of smaller Tokamaks such as …

Measurement Of Magnetic Fluctuations By O-X Mode Conversion, L. L. Vahala, G. Vahala, N. Bretz

Electrical & Computer Engineering Faculty Publications

The possibility of measuring magnetic fluctuations in a fusion plasma is considered by examining the O→X mode conversion. Under certain conditions and with good angular resolution, this mode conversion can be attributed to the presence of magnetic fluctuations even though the level of these fluctuations is much lower than that of density fluctuations. Some nonideal effects such as mode polarization mismatch at the plasma edge are also discussed.

Irish Building Services News

Building Services Engineering

No abstract provided.

Curricular Trends In Four-Year Baccalaureate Degree Industrial Technology Programs, Clayton Ray Diez

Dissertations and Theses @ UNI

The intents of the research were to determine both curricular trends in four-year baccalaureate industrial technology programs and the role accreditation standards have on such trends. The purpose was to present implications for future curriculum development and to provide a framework and point of reference for both curriculum developers and standards writers.

From the literature review, questionnaire items were designed to answer four research questions. The instrument was validated by a jury process and data were collected from 60 respondents, organized and compiled using National Association of Industrial Technology curriculum categories. Chi square and descriptive statistics were used to analyze …

The Importance Of Technology Assessment Procedures For Missionary Trainees, James Michael Hoeksema

Dissertations and Theses @ UNI

The purpose of this study was to identify those technology assessment (TA) procedures that are most important to teach to missionary trainees. This was based on the perceptions of the chief executive officers of U.S. Protestant mission agencies.

A survey was used to collect the research data. A total of 175 usable survey instruments were returned (25.6%). Analysis of the data consisted of frequency distributions and Chi-square.

A "common core" of TA procedures which are being used by mission agencies was identified. These were: (a) on-site field investigation, (b) committee meetings, (c) brainstorming, (d) personal interviews, (e) review of related …

Endless State-Of-Polarization Control For Coherent Optical Communication Systems Using Nematic Liquid Crystal, Scott H. Rumbaugh

Dissertations and Theses

One of the obstacles to coherent fiber-optic communications is the unpredictable polarization drift which necessitates the use of an active polarization controlling system to match the polarizations of the signal and local oscillator. The polarization match must be maintained during the reset of any of the finite range components to prevent loss of data. We present a novel and practical system which uses three liquid crystal devices for the polarization matching process. Also, the required reset control algorithm and its derivation are described in detail.

Propagation Of Millimeter Wave Signals In Forests Using The Equation Of Radiative Transfer With Strong Forward Scattering Phase Functions, Nack Yang Cho

Dissertations

A forest is a highly scattering medium at millimeter wave frequencies. The propagation of cw millimeter wave signals in forests has been studied previously, both theoretically and experimentally. Published experimental data verified that continuous wave transmission is possible over lengths of the order of a few hundred meters and that a forest acts to strongly scatter energy in the forward direction. The cw studies yielded the determination of the range dependence, beam broadening effects and depolarization effects of millimeter wave signals in a forest. However, pulse broadening effects, which are of importance particularly in the case of digital signal transmission, …

Acuta Enews November 1989, Vol. 18, No. 11

ACUTA Newsletters

In This Issue

A Conversation with Kid Malott, ACUTA Post President

Message From The President

Toronto Seminar a Smash!

Update: More on McGill..

Changing your prefix? Read this first...

Administrative Director's Column

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, November 1989, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

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

Transient Stability Hierarchical Control In Multimachine Power Systems, A Rubbai, F. Eugenio Villaseca

Electrical and Computer Engineering Faculty Publications

The authors present the optimal transient stability control problem in a hierarchical structure for multimachine power systems. The two-level structure retains the local closed-loop controls, thereby easing its implementation on existing systems. The formulation accounts for nonlinearities and interconnections, and the optimization of the system transient performance is obtained with less computational effort. Since the computations are distributed among the many local feedback subsystems, the storage and solution times are considerably less than those required by a single overall centralized controller. This advantage becomes much stronger as the system size increases. For illustration purposes, this technique was applied successfully to …

1989 Scholars And Artists Bibliography, Michael Schwartz Library, Cleveland State University, Friends Of The Michael Schwartz Library

Scholars and Artists Bibliographies

This bibliography was created for the annual Friends of the Michael Schwartz Library Scholars and Artists Reception, recognizing scholarly and creative achievements of Cleveland State University faculty, staff and emeriti

Appendix A: Presentation Of Roads Scholars, Calvin G. Grayson

Kentucky's Annual Forum on Transportation

No abstract provided.