Engineering Commons^™

Relativistic Electronic Structure Of Pbs And Pbse Molecules, Cary Y. Yang, Sohrab Rabii

Electrical and Computer Engineering

The electronic orbitals of PbS and PbSe are calculated using a scattered‐wave technique for the solution of the one‐electron Dirac equation for a polyatomic muffin‐tin potential. The resulting orbital transition energies are in good agreement with experimental absorption and emission data.

Digital Demodulator-Correlator, James C. Fletcher, James W. Layland, Warren L. Martin, Arthur I. Zygielbaum, Richard M. Goldstein, William P. Hubbard

School of Natural Resources: Faculty Publications

Apparatus for demodulation and correlation of a code modulated 10 MHz signal is comprised of a sample and hold analog-to-digital (A/D) converter synchronized by a frequency coherent 40 MHz pulse to obtain four evenly spaced samples A1,B1A2 and B2 of each cycle of the signal, and means for adding, or subtracting, each sample to, or from, one of four accumulators to form the sums:

SI, = (A1-A2) M1

Sia=; (A1-A2) M2

S2, = (B1 - B2) M1

S2= (B1-B2) M2

where

M1 = 10 MHz Reference . Receiver Code A0' M2 = 10 MHz. Reference . Receiver Code A90'

M2 …

Acuta Enews September 1978, Vol. 7, No.9

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

PARTY LINE

BITS & PIECES

VIRGINIA VIEW

POTPOURRI

MOUTH OF THE SOUTH

Energy Fact Sheet: Air-Type Solar Collectors For Agricultural And Residential Use, Blaine F. Parker

Agricultural Engineering Energy Series

This publication provides information on three basic air-type solar collectors for the purpose of explaining the characteristics of each. The collectors may be purchased assembled or constructed on the site. In either case an efficient collector of the right type should be selected for a given application.

Energy In Agriculture: Energy For Swine Facilities Part Ii: Alternative Sources Of Energy, Robert L. Fehr

Agricultural Engineering Energy Series

Recently, there has been some concern about energy utilization in agricultural production. Shortages of natural and LP gas have affected many livestock producers, especially swine producers utilizing LP gas as a supplemental heat source in farrowing facilities. These shortages, coupled with an ever-increasing price for fuel and electricity, have encouraged many producers to begin looking for alternative energy sources.

Green-Extension Systems At High-Speed Intersections [Sept. 1978], Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

The purpose of this study was to determine the effectiveness of green-extension systems (GES) for reducing the dilemma-zone problem associated with the amber phase of traffic signals at high-speed intersections. Reactions of 2,100 drivers were noted during the amber phase at nine intersections, and the dilemma-zone distances with respect to the stop bar were determined.

Before-and-after studies made at three green-extension sites showed a 54-percent reduction in total accidents and a 75-percent reduction in rear-end accidents after GES installation. Accident severity was unaffected.

Conflict, volume, delay, and speed data were taken before and after GES installation at two sites. A …

Evaluation Of Paint Stripe Beads, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

This report presents another phase of a study on evaluation of paint stripes and glass beads. The results from the previous phases of this study indicated that large-scale, experimental evaluation of a 1.65 refractive-index bead and a large-gradation, 1.52 refractive-index bead was warranted. Poor embedment of beads, however, precluded the evaluation because the quick-drying paint used did not allow beads to be properly embedded. After progressive thinning of the paint with solvent, adequate bead embedment was obtained. Drying time, of course, was longer.

Attempts were made to obtain good embedment without extending the drying time. This included testing of a …

Energy In Agriculture: Energy For Swine Facilities Part I: Energy Conservation, Robert L. Fehr

Agricultural Engineering Energy Series

Recently, there has been some concern about energy utilization in agricultural production. Shortages of natural and LP gas have affected many livestock producers, especially swine producers utilizing LP gas as a supplemental heat source in farrowing facilities. These shortages, coupled with an ever*increasing price for fuel and electricity, have encouraged many producers to begin looking for ways to reduce energy consumption.

Irish H & V News

Building Services Engineering

No abstract provided.

20th Annual Rocky Mountain Conference On Analytical Chemistry

Rocky Mountain Conference on Magnetic Resonance

Abstracts and program from the 20th annual meeting of the Rocky Mountain Conference on Analytical Chemistry, co-sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy and the Rocky Mountain Chromatography Discussion Group. Held in Denver, Colorado, August 7-9, 1978.

Acuta Enews August 1978, Vol. 7, No. 8

ACUTA Newsletters

In This Issue

VICE PRESIDENT'S MESSAGE

PRESIDENT'S MESSAGE

PARTY LINE

EXHIBIT AREA AT SNOWBIRD

VIRGINIA VIEW

MOUTH OF THE SOUTH

POTPOURRI

ATTENTION: ALL ACUTA MEMBERS!

ACUTA WELCOMES THE FOLLOWING NEW MEMBERS:

A Discussion Of Selected Aspects Of Privacy, Confidentiality, And Anonymity In Computerized Conferencing, Computerized Conferencing & Communications Center, Robert Bezilla

Computerized Conferencing and Communications Center Reports

This paper presents a discussion of the potential uses of privacy, confidentiality and anonymity in computerized conferencing.

Section I begins with definitions of the concepts, their aspects and allied terms; and briefly discusses their use in general communications and problem-solving activities.

Section II explores their use in social research, particularly the survey method, a field that may yield useful analogues for computerized conferencing.

Section III outlines the various functions of privacy, confidentiality and anonymity that have been proposed for their constructive use in computerized conferencing.

Section IV reports various difficulties and compromises that have been encountered to date in striving …

Separation Technologies Reviewed, Guna S. Selvaduray, R. N. Anderson, M. Goldstein

Faculty Publications

No abstract provided.

Energy In Agriculture: Fan Performance On Grain Drying Bins, Otto J. Loewer, Thomas C. Bridges, G. M. White, Robert L. Fehr, Larry W. Turner

Agricultural Engineering Energy Series

One of the keys to successful in·bin grain drying and aeration is the matching of a drying or aeration fan to the drying or storage bin. A properly designed system will be more efficient in terms of both drying and energy utilization. The quantity of air that may be delivered through the grain depends upon grain type, bin size, fan type, fan horsepower, depth of grain, percent of foreign material and the extent to which the grain is packed.

Pavement Evaluation Using Road Rater Deflections, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen

Kentucky Transportation Center Research Report

Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the …

Determination Of Rutting In Asphaltic Concrete Pavements: Field Instrumentation And Laboratory Characterizations, David L. Allen

Kentucky Transportation Center Research Report

This report describes a number of gages developed to measure the location and magnitude of ruts. These were installed in a newly constructed asphaltic concrete pavement. They measure lateral deflections and transient and permanent vertical deflections. Some preliminary vertical deflections are reported. An investigation of materials is also reported. The asphalt concrete base, dense-graded aggregate base, and subgrade material were characterized by (1) shear strength (triaxial tests), (2) rheologic behavior (creep tests), (3) permanent deformation characteristics (repeated-load and creep tests), (4) Young's modulus (resonant column tests), and (5) resilient properties (repeated-load tests). Empirical functions were formulated to describe the permanent …

Cpacs Happenings (August-September 1978 Newsletter), College Of Public Affairs And Community Service, University Of Nebraska At Omaha

CPACS Newsletters

The College of Public Affairs and Community Service (CPACS) newsletter that reported on the news, collaborations, events, and general happenings of the UNO College of Public Affairs and Community Service. This newsletter has had many names and variations over the years including SPACS Newsletter (1973); Newsletter of the College of Public Affairs and Community Service (1973-1974): Happenings (1974-1980s); and the current e-newsletter titled the CPACS Collective (2021-)

Irish H & V News

Building Services Engineering

No abstract provided.

Micro-Relief Surface Depression Storage: Changes During Rainfall Events And Their Application To Rainfall-Runoff Models, J. Kent Mitchell, Benjamin A. Jones Jr.

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Micro-relief surface depression storage is one of the dynamic components of the rainfall-runoff process. The quantification of the effect of rainfall intensity and duration on the micro-relief was the subject of this study. Micro-relief measurements were made on 88 soil bin samples before and after the application of simulated rainfall events. The surface depression changes are described with empirical equations, using basic rainfall, surface hydrology, and soil parameters and their cross products as independent variables. A rainfall-runoff model demonstrates the value of a dynamic description of the surface depression storage function.

Ocean Thermal Energy Conversion By Using A Solidification Melting Cycle, Wen Liang Lin

Chemical and Biological Engineering ETDs

An OTEC (Ocean Thermal Energy Conversion) power plant uses warm surface seawater (24° C - 28° C) as a heat source and deep cold seawater (4° C - 7°C) as a heat sink. With this temperature difference, a heat engine which delivers either mechanical or electric power can be con­structed. There are some limitations and problems of evaporators and condensers to be used in a closed Rankine cycle OTEC plant which have seriously limited the applicability of this concept. This study proposed a process using the S/L engine---a heat engine that utilizes a working medium undergoing solidification and melting operations. …

An Analytical Comparison And Contrast Of The Automobile Rotary Combustion Engine And The Reciprocating Engine, Eric K. Earle

Graduate Research Papers

The ReCE, although possessing many good characteristics as a motive source of power, is still somewhat far from achieving the desired efficiency in man's quest for better economical and practical means of transportation, due to the lack of higher speeds and its inability to burn all of the fuel admitted as a result of its large number of moving parts, their weight, size and reciprocating motion.

The design and development of the RCE has overcome many of the above problems inherent in the ReCE, and, therefore, has the potential of replacing the ReCE as the major source of automotive power …

Surface Roughness Effects In Hydrodynamic Lubrication, Johnny Lynn Teale

Mechanical Engineering ETDs

Prediction of pressure and leakage in a hydrodynamic bearing when surface roughness effects are important is an essential step in bearing design. The inclusion of surface roughness effects in bearing analysis allows more accurate prediction of bearing life. It has been shown that the average flow model developed by Cheng and Patir is a promising technique for determining surface roughness effects. The objective of this investigation is to examine the validity, applicability and limitation of the average flow model. Validity of the average flow model is ascertained by checking the independence of flow factors. Discussion of the general Reynolds equation …

A System For Detecting Neutrons In The Harsh Radiation Environment Of A Relativistic Electron Beam, Lyle Wayne Kruse

Nuclear Engineering ETDs

Newly developed detectors and procedures allow measurement of neutron yield and energy in the harsh radiation environment of a relativistic electron beam source. A new photomultiplier tube design and special gating methods provide the basis for novel time-of-flight and total-yield detectors. The technique of activation analysis is expanded to provide a neutron energy spectrometer. There is a demonstrated potential in the use of the integrated system as a valuable diagnostic tool to study particle-beam fusion, intense ion-beam interactions, and pulsed neutron sources for simulating weapons effects. A physical lower limit of 10⁸ neutrons into 4π is established for accurate …

Fuzzy Probability And Probabilistic Processes, Abraham Kandel

Electrical and Computer Engineering ETDs

In this dissertation, contributions to fuzzy probability and to differential equations with fuzzy parameters are made.

After an introductory chapter, a review of fuzzy sets and fuzzy algebra is given in Chapter 2. The main new results of the dissertation are contained in Chapter 3.

In Chapter 3, Zadeh's definition of the probability of a "fuzzy event" and "the event" and "the average value of a fuzzy function" are extended into the time domain. It is then shown that not only grades of membership, but also probabilistic processes with notions of fuzziness contained, can be defined which obey ordinary, matric, …

Second And Third Generation Vector Computers And Their Fortran Processors, Kay Anderson Hansborough

Electrical and Computer Engineering ETDs

SECOND AND THIRD GENERATION VECTOR COMPUTERS AND THEIR

FORTRAN PROCESSORS

Kay Anderson Hansborough, M.S.

Department of Electrical Engineering and Computer Science

The University of New Mexico, 1976

This work describes the architectures of five large vector computers. These computers are the CDC 7600, CDC STAR-100, TI Advanced Scientific Computer, CRAY-1, and Burroughs Scientific Processor.

Then the FORTRAN languages and their vector extensions are described for each machine. In addition to these languages, the IBM VECTRAN language is described.

Handbook Of Remote Sensing Imagery Of Connecticut, Daniel L. Civco, William C. Kennard, Michael Wm. Lefor

Storrs Agricultural Experiment Station

No abstract provided.

Acuta Enews July 1978, Vol. 7, No.7

ACUTA Newsletters

In This Issue

MOUTH OF THE SOUTH

PARTY LINE

POTPOURRI

BITS & PIECES

VIRGINIA VIEW

ACUTA WELCOME THE FOLLOWING NEW MEMBERS

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Transversely Reinforced Beam Webs, Wei-Wen Yu, Nguyen Phung

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on transversely reinforced cold-formed steel beam webs. The results obtained from the study of beam webs subjected to …

Webs For Cold Formed Steel Flexural Members Structural Behavior Of Longitudinally Reinforced Beam Webs, Wei-Wen Yu, Nguyen Phung

CCFSS Library (1939 - present)

Since 1973, a research project on webs for cold-formed steel flexural members has been conducted at the University of Missouri-Rolla under the sponsorship of American Iron and Steel Institute. This study deals with the structural behavior of beam webs subjected to bending stress, shear stress, combined bending and shear, web crippling and the effect of bending on web crippling load. In addition, it includes a study of beam webs reinforced by either transverse or longitudinal stiffeners. This report presents the research findings on longitudinally reinforced cold-formed steel beam webs. The results obtained from the study of beam webs subjected to …

Irish H & V News Plus Dockrells Supplement

Building Services Engineering

No abstract provided.