Engineering Commons^™

Report Of Laboratory Tests And Analytical Sudies Of Structural Characteristics Of Cold-Formed Steel-Joist Floor Systems, J. F. Wiss, P. W. Linehan, R. J. Kudder

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

Official Phone Directory, Us Army Foreign Science And Technology Center, Robert Bolin , Depositor

Department of Defense Military Intelligence

This directory contains instructions for using various telephone systems and calling long distance, a thorough organizational listing, a quick reference guide, an alphabetic list of employees, and a world time conversion chart. The organizational listing gives the lists each division and the branches within it and the heads of the divisions and branches with their phone numbers. The list of employees includes the person’s name, his or her office extension and home phone number, office symbol, and room number. If the person listed was not located in Charlottesville, the alphabetic list tells where they were.

Development And Field Testing Of An Electronic Information Exchange System : Final Report On The Eies Development Project, Computerized Conferencing & Communications Center, Murray Turoff, Starr Roxanne Hiltz

Computerized Conferencing and Communications Center Reports

The Electronic Information Exchange System (EIES) is a particular design of a computerized conferencing system intended to allow both the facilitation of scientific and technical communications and experimentation and research into human information-communication processes. To meet the first objective EIES offers functional components of messaging, conferencing, notebooks and bulletins for its users. To meet the second objective EIES allows for the tailoring of interfaces by individuals and groups, and the incorporation of special processing and interconnect options to other computer and information systems.

EIES is designed as a research tool or laboratory without walls in order to allow information scientists …

Cpacs Happenings (December 1977-January 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-)

Beach Erosion And Accretion At Virginia Beach, Victor Goldsmith, Susan C. Strum, George R. Thomas, Coastal Engineering Research Center (U. S. )

Reports

This report is published to provide coastal engineers with a description of beach erosion and accretion at Virginia Beach, Virginia, including the effect of continuing beach replenishment, and the apparent unimportance of land use in determining erosion. This report also provides bench-mark data on coastal processes at the shore north of the CERC Field Research Facility at Duck, North Carolina. The work was carried out under the beach evaluation program of the U.S. Army Coastal Engineering Research Center (CERC).

Light Extinction In Polydisperse Particulate Systems, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

Analytic methods are developed for determining the attenuation characteristics of light beams propagating through ensembles of scattering particles including those with complex index of refraction. The methods are applicable to a wide range of practical particulate systems, and the results are expressed explicitly in terms of elementary functions. Propagation through fog and clouds is considered as an example, and it is found that absorption by the liquid lengths. water in such ensembles affects strongly the extinction for ir wave-lengths

Flexible Pavement Designs To Support Various Vehicle Configurations, Robert C. Deen, Herbert F. Southgate

Kentucky Transportation Center Research Report

Pavement designers are often asked if pavements can be designed to carry and support the unusually heavy loads which have been known to use portions of the highway system. In some instances, for example, haul roads leading to highway or other construction projects or haul roads associated with mining, heavy loads have become commonplace and extra-legal. Within limitations of engineering experience, there appears to be no reason why pavements cannot be designed for these heavy loads. Of course, the restrictive factor in implementing such designs may be the excessive costs of construction. Even so, excessive maintenance costs otherwise associated with …

Evaluation Of Organic Additives For Use In Zinc Electrowinning, R. C. Kerby, H. E. Jackson, Thomas J. O'Keefe, Yar Ming Wang

Materials Science and Engineering Faculty Research & Creative Works

Organic additives are used extensively in zinc electrowinning to assist in controlling the process. A cyclic voltammetry technique has been developed to provide a rapid, quantitative evaluation of the effectiveness of selected organic additives in minimizing the deleterious effects that impurities, such as antimony, have on zinc deposition. Results have indicated that animal glues are more effective than the other organic additives tested, which included several gums, enzymes, and amino acids, in relation to the current efficiency of zinc production. Of the various animal glues compared in this research, the most effective appeared to have average molecular weights in the …

Kentucky’S Pavement Management System, James H. Havens, Eugene B. Drake

Kentucky Transportation Center Research Report

Pavement management concepts are discussed, and a method is presented illustrating the required data and its use to accumulate EAL's annually for comparison with the design EAL. This method can be used to determine overlay priorities, overlay design thicknesses, and financing schedules. A discussion of automatic feedback of field data is presented. Pavement condition reports should be analyzed separately to prevent improper adjustments in the design system due to causes of failure other than normal fatigue.

An overlay, whether for extending service life or improving skid resistance, provides an additional structural thickness and will modify the design life.

Preparation of …

Traffic Conflicts As A Diagnostic Tool In Highway Safety, Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

Because of the shortcomings in accident data, such as incomplete reporting and inaccurate information on accident reports, a need was found for indicators of accident potential. Nearly half of the 209 locations identified in Kentucky as hazardous by accident criteria were found to be falsely identified due to random accident occurrences. Accident repeatability from one year to the next was found to be poor at 60 intersections (r = 0.64) and 170 spot locations (r = 0.59). Up to two years of accident data were found to be necessary to obtain a reliable base of accident data.

Conflict counts were …

Traffic Conflicts, Erratic Maneuvers, And Near-Miss Accidents: State-Of-The-Art, Charles V. Zegeer

Kentucky Transportation Center Research Report

Definitions are given for the various types of traffic conflicts, erratic maneuvers, and near-miss accidents. The General Motors technique for observation of traffic conflicts is summarized. Procedures used by several highway agencies for collecting conflict data are also detailed. Criteria which have been used to identify hazardous intersections using traffic conflict data are summarized. Methods and examples of evaluating safety improvements are detailed. Relationships between conflicts and accidents found by others were given.

The procedure for observing traffic conflicts on freeway ramps is described. Definitions are given for erratic maneuvers at lane drops, gore areas, and intersections. Results from studies …

Analysis Of Tandem Axleloads By Elastic Theory, Herbert F. Southgate, Robert C. Deen, James H. Havens

Kentucky Transportation Center Research Report

AASHO Road Test tandem axleloads were analyzed to determine the magnitude of the tandem axleload that causes the same damage as the 18-kip (80-kN) single axleload. The procedure is outlined and is the same used to analyze single axleloads. The essential findings were as follows:

1. One repetition of a 34-kip ( 151-kN) tandem axleload appears to cause the same damage as one repetition of an 18-kip (80-kN) single axleload. 2. The relationships of log repetitions versus axleload used by Kentucky appear to be equally valid for single and tandem axleloads. 3. The use of superposition principles, and equivalency of …

Dense Chromium Sesquioxide, P. D. Ownby

Materials Science and Engineering Faculty Research & Creative Works

A sintered, fine grained, polycrystalline, essentially fully dense, essentially single phase Cr₂O₃ body is prepared by sintering Chromium Sesquioxide (Cr₂O₃) at essentially the equilibrium oxygen partial pressure (P_O2) for the formation of CrO ₃ from its elements at the sintering temperature. To achieve optimum theoretical density a second metal oxide dopant such as MgO, capable of controlling the grain size, is added. In addition, Cr₂O₃ bodies are rendered more stable, and thus have a longer life, by maintaining over the body an atmosphere which is essentially equilibrium Po, …

The Energy Crisis: The Challenge For Nuclear Regulation, Richard T. Kennedy

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Good morning, Ladies and Gentlemen. It is indeed a pleasure for me to be with you again this year for your annual conference and to see so many familiar faces. Your theme -- "The Energy Crisis: Where Do We Go From Here?" -- is particularly pertinent. And, I am especially honored to be lead-off speaker on a subject of such importance to all Americans.

When I spoke to you last year, I discussed the joint efforts by the NRC and the States to reduce the overlap and duplication in reactor regulation. Today, I want to bring all of you up …

Introductory Remarks, Dudley Thompson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

No abstract provided.

Energy Conservation And U.S. Farm Production Patterns, Angelos Pagoulatos

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Energy conservation practices in crop production would not substantially reduce energy use. Substantial reductions of energy would imply major structural changes in terms of extensive systems of crop production. The tradeoffs between land and energy for future desired crop outputs are derived.

Stability Of Premixed H₂/O₂/N₂ Combusting Turbulent Jets, H. F. Nelson

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Experimental measurements and theoretical predictions of the stability of hydrogen-air-nitrogen premixed turbulent flames have been carried out. The turbulent flame is theoretically modeled using finite rate chemical kinetics and a well-stirred reactor. The model contains a free parameter, which is evaluated by comparing the theoretical predictions to experimental results. A hydrogen flame stability experiment was carried out and the results were compared to the theory. The theory and experiment were found to agree, if the free parameter in the theory varied as the reciprocal of the turbulent jet radius squared.

The National Solar Energy Research Institute: Function, Organization, And The First Six Months, Dennis R. Costello

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The role of the Solar Energy Research Institute (SERI) in the national solar program is discussed. A brief history of developments leading to the formation of SERI is included. Functional responsibilities, organization and the current plans for staff and facilities growth are addressed.

Design Optimization For Solar Array Of Multiple Collector Types, Jerry O. Bradley, David Posner, C. E. Bingham

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Methodology is presented for optimizing solar arrays used for heating fluids from ambient to elevated temperatures. The optimal array consists of the appropriate combination of available collector types which delivers the most energy per dollar invested in the array. An example optimization is presented and verified using computer simulation of numerous combinations of collector types.

The Environmental Effects Of Uranium Exploration And Mining, Nicholas H. Tibbs, David L. Rath, Thomas K. Donovan

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Uranium exploration and mining is increasing as the Nation's demand for energy grows. The environmental impacts associated with this exploration and mining are not severe and compare favorably with impacts from the production of other energy resources.

Current State-Of-The-Art Of Electrochemical Batteries From A Users Point Of View, John G. Wolter, John A. Gilbert, James V. Leonard

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper will present a description of some of the battery types (couples) on the market, energy densities, and recycle lives. The possibility that some of these could be used in the transportation industry will be explored. Speculation of future battery development will be discussed.

Life Cycle Costing Of Energy Systems, William R. Baker

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Determination of true costs of ownership and the proper evaluation of savings are extremely important with regard to the purchase of energy efficient systems. It is the purpose of the following paper to discuss the application of the life cycle costing process as applied to the evaluation of capital expenditures.

Dissolution Of Kansas Evaporites, The Radioactive Waste Disposal Problem, Barbara J. Smith

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The radioactive waste repository at Lyons, Kansas, focused attention on the problem of evaporite dissolution. More study is needed in the determination of the mechanisms responsible for deterioration. Also recent water use policies have been questioned with the need pointed out for increased effectiveness in planning. Good water planning has to take into account the role of evaporite dissolution in water quality.

Assessing Environmental Costs Of Energy Procurement, Ronald G. Alderfer

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper describes an ecological approach to the assessment of environmental impact and associated costs of all major phases of energy procurement. The approach is based on identification of services performed and benefits offered by natural and man-modified ecosystems and requires that energy procurement activities be analyzed in terms of their impact on these services and benefits. A thorough cost assessment (including quantitative and qualitative factors) of alternate energy plans will aid both the selection of the most desirable alternate and the reduction of unforeseen costs and problems during and after construction .

Control Of Trace Elements During The Increasing Development Of Coal For Energy, Bobby G. Wixson, Ernst Bolter

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The question of an energy crisis continues as many people in the United States have difficulty and become confused with what seems to be a continuing excess of gasoline, oil products and questionable reporting of price increases and profit margin by energy companies. However, the majority of the scientific and engineering community, knowledgable politicians and the general public realize that the energy crisis is real. Fortunately there still remains time to practice conservation and the development of alternative and new sources of energy if the United States can unite and implement a viable energy plan.

Competition In National And Appalachian Coal Markets, Walter P. Page

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

Paper examines concentration ratios for Appalachian coal production and the output behavior of coal-oil merged firms in Appalachia.

Regulatory Effectiveness In The Electric Utility Industry: An Empirical Analysis, Michael A. Zimmer

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

An established result in the theory of the regulated firm is that an effective rate-of-return constraint induces the firm to employ larger proportions of capital inputs to noncapital inputs than would be the case in the absence of the regulatory constraint. This overcapitalization, often referred to as the Averch-Johnson effect, has been the subject of several recent empirical studies of the electric utility industry. The present study adds to this body of literature. It seeks to test for the effectiveness of utility regulation in the context of a cost minimization model which includes the allowed rate of return as an …

Increased Aluminum Use And Its Impact On The Life-Cycle Energy Cost Of Automobiles, Yildirim Omurtag

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper examines the life-cycle of a passenger automobile including ore refining, manufacture of components, assembly, driving and recycling to provide a general computerized model to be used in evaluating the impact of various material substitution rates and recycling policies on the total system energy consumption. The emphasis is on the use of increased aluminum to replace iron and steel.

Reducing Electrical Power Demand For Industries, Burns E. Hegler, J. Byron Nelson, Rene O. Harrell

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

A typical industry has an electric power demand that is in excess of its needs. This condition places an unnecessary burden upon the industry and contributes to the current energy crisis. Reduction of demand may be accomplished by a number of methods of control that are examined and evaluated. Standard techniques of engineering analyses and engineering economy have been used to study and analyze an industry selected as an example.

Barriers And Incentives To The Commercialization Of Solar Heating And Cooling Of Buildings, Dennis R. Costello, David M. Posner

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

This paper reviews potential barriers to the widespread use of solar heating and cooling systems in residential and commercial buildings. Although solar systems have been technologically proven and are used to a limited extent today, economic, institutional, and legal barriers may slow future commercialization. Consideration of incentives which might reduce these barriers raises the question of how to evaluate alternative policy question options.