Engineering Commons^™

Ole Miss Engineer 1977

Ole Miss Engineer

No abstract provided.

Acuta Enews April 1977, Vol. 6, No. 4

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

EDITORIAL

COMMUNCATIONS CONSULTANTS

FEATURED INSTITUTION

ANNUAL REPORT

BOARD OF DIRECTOR'S MEETING

NEW MEMBERS

1978 CONFERENCE DATES

MAJOR TELECOMMUNICATIONS CONFERENCE

PROPOSED BUDGET 1977-78

Some Uncertainties Of Slope Stability Analyses, Robert C. Deen, Tommy C. Hopkins, David L. Allen

Kentucky Transportation Center Research Report

Some practical limitations of total stress and effective stress analyses are discussed. For clays having a liquidity index of 0.36 or greater, φ-equal-zero analyses based on laboratory undrained shear strengths give factors of safety close to the actual factor of safety. However, based on field vane strengths, φ-equal-zero analyses may yield factors of safety which may be too high. The difference between field vane and calculated shear strengths increased as the plasticity index increased. For clays having a liquidity index less than 0.36, φ-equal-zero analyses using laboratory undrained shear strengths give factors of safety that are much too high; but …

Acoustic Emission Testing Of High-Strength Steel Weldments, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

Manual arc welds were made on high-strength ASTM A 514 and A 588 steels. Different weldment configurations were employed in order to vary the restraint on the welds during cooling. The weldments were monitored 'in-cooling' with acoustic emission equipment. Weldments having greater restraint produced more acoustic emission, usually for longer periods of time. Weldments which fractured during cooling produced more acoustic emission than those which were unflawed.

Theoretical Thermodynamic Functions For Argon, Peter Yi-Ren Sheh

Masters Theses

No abstract provided.

Fundamental Analysis Of The Linear Multiple Regression Technique For Quantification Of Water Quality Parameters From Remote Sensing Data, Charles Henry Whitlock Iii

Civil & Environmental Engineering Theses & Dissertations

Inconsistent results have been obtained from previous experiments which have applied linear multiple regression techniques to remote sensing data for quantification of water quality parameters. The objective of this investigation is to define optical physics and/or environmental conditions under which the linear multiple regression should be applicable. To achieve this objective, an investigation of the signal response equations is conducted and the concept is tested by application to both analytical test cases and actual remote sensing data from a laboratory under controlled conditions.

Investigation of the signed response equations shows that the exact solution for a number of optical physics …

Evaluation Of Hydrogen As A Cryogenic Wind Tunnel Test Gas, Richard Carl Haut Ii

Mechanical & Aerospace Engineering Theses & Dissertations

A theoretical analysis of the properties of hydrogen has been made to determine the suitability of hydrogen as a cryogenic wind tunnel test gas. By using Cryogenic hydrogen, instead of air or cryogenic nitrogen, as the wind tunnel test gas, a significant increase in the test Reynolds number may be achieved without increasing the aerodynamic loads. Under sonic conditions, for example, compared to air at ambient temperature, cryogenic hydrogen at a pressure of one atmosphere produces an increase in Reynolds number of a factor of approximately fourteen while cryogenic nitrogen, at the same pressure, produces an increase of only a …

A Model To Investigate The Influence Of Suspended Sediment On The Mass Transport Of A Pollutant In Open Channel Flow, Raymond Scott Chapman

Civil & Environmental Engineering Theses & Dissertations

The environmental impact of the transport of pollutants in open channel flow has for many years been of interest due to the continuous introduction of heavy metals, pesticides, herbicides, and other foreign substances into natural waterways. In order to fully understand this transport process, it-is necessary to examine the significance of its individual components. In the present study an explicit two-dimensional finite difference model, designed to investigate the influence of suspended sediment on the pollutant transport process, is presented. Specific attention is directed toward examining the role of suspended sediment in 1) the turbulent vertical transport mechanism in a stratified …

Suspended And Dissolved Solids Effects On Freshwater Biota: A Review, Darwin L. Sorensen, Margaret M. Mccarthy, E. Joe Middlebrooks, Donald B. Porcella

Reports

It is widely recognized that suspended and dissolved solids in lakes, rivers, streams, and reservoirs affect water quality. In this report the research needs appropriate to setting freshwater quality criteria or standards for suspeneded solids (not including bedload) and dissolveed solids are defined by determining the state of our knowledge from a critical review of the recent literature in this field. Common literature sources and computer searching routines were used as an initial source of information followed by detailed journal searches. Although some 185 journal articles, government reports, and other referecnes were cited herein (about 45 percent publicshed since 1974) …

Single Particle Scattering With Focused Laser Beams, Lee W. Casperson, Cavour W. Yeh

Electrical and Computer Engineering Faculty Publications and Presentations

A scattering technique is described in which the incident laser beam is tightly focused to isolate the effects of a single particle. In this way the individual particles may be studied in their natural environment, and experiments with latex spheres are in agreement with the theory.

Precise Frequency Control Of The Voltage Controlled Oscillator Using Finite Digital Word Lengths, Timothy Peter Hulick

Electrical & Computer Engineering Theses & Dissertations

For an oscillator that is periodically swept in frequency between some upper and lower bound, the output amplitude may easily be made constant and therefore known with a high degree of certainty. The instantaneous frequency exists only at a point in time and therefore possesses a zero probability of existing at any point. This thesis deals with the development of a method for interchanging the probability density functions of amplitude and frequency so that the latter becomes known with certainty while the former is known only to the extent that it is within a certain range.

The method developed makes …

Thermal Stratification And Circulation Of Water Bodies Subjected To Thermal Discharge, Mohammad A. Borhani

Dissertations

A three-dimensional analytical model for large water bodies is presented. Time histories and spatial distribution of pressure, velocity and temperature in water bodies, subjected to thermal discharge, are determined employing a digital computer. The dynamic response is obtained for a rectangular water body by applying a finite difference method to the mass, momentum and energy balance equations. These partial differential equations are algebraically manipulated to obtain; 1) three parabolic differential equations integrated temporally to find the horizontal velocity components and temperature; 2) one algebraic integral equation to get the vertical velocity component; 3) one elliptic differential equation integrated spatially to …

Computerized Analysis Of Stress-Strain Consolidation Data, E. Gregory Mcnulty

Kentucky Transportation Center Research Report

A computerized, mathematical algorithm is described and presented for analyzing the semilogarithmic stress-strain (time-independent) properties of standard, controlled-gradient, and controlled-rate-of-strain consolidation tests. This algorithm is an automation of manual graphical procedures currently used in engineering practice to obtain stress-strain information necessary for use in time-independent settlement analysis. The Casagrande and Schmertmann constructions are analytically represented to determine the preconsolidation stress and the in situ, compressibility coefficients of compression and expansion. Values for each of these parameters range between a probable and minimum value. The point of maximum curvature is determined for the Casagrande construction by use of the mathematical definition …

D. C. Conductivity Of Magnetite And Nickel Ferrites, Nazeih M Botrous El Badramany

Archived Theses and Dissertations

No abstract provided.

Reactivity And Kinetic Comparison Of Large Single New Mexican And South African Subbituminous Coal Particles, Wendall Gerald Stoddart

Chemical and Biological Engineering ETDs

This study focuses on one aspect of coal gasification; that is, devolatilization of large single coal particles. Devolatilization is an important and key economic step in the overall gasification process. From a commercial standpoint for New Mexico, there are two processes in the field of coal gasification of importance: the Lurgi synthetic natural gas process and in-situ gasification. Since both the Lurgi and in-situ processes treat rather large particles of coal, the findings in this study might be used by industry to improve the design and operation of these processes. The work presented is a study and comparison of the …

Laser Doppler Anemometry For Flow Measurement, William W. Durgin, Lawrence C. Neale

Office of the Provost Scholarship

Laser doppler anemometers are non-invasive, linear, and inherently precise. Calibration, in the usual sense, is not necessary; length and frequency measurements suffice to establish velocity at a spatial point. Measurements were made at points in the cross-sections of two square ducts containing water flow. The points were selected in conformance with a numerical integration scheme to be used for volumetric flow rate determination from the velocity measurements. The experiments were performed in a primary calibration facility at flows up to 1.25 m³/sec using ducts with sides 46 and 92 cm. The anemometer, operating in forward scatter differential mode …

Sio2-Si Film-Substrate Single-Reflection Retarders For Different Mercury Spectral Lines, A.R.M. Zaghloul, R.M.A Azzam

Department of Electrical and Computer Engineering: Faculty Publications

Design parameters for SiO₂- Si film-substrate single reflection retarders for several mercury spectral lines are presented. An example of an angle-of-incidence tunable retarder (AITR) capable of multiple wavelength operation (MWO) is reported Simple, approximate formulae for calculating film-substrate retarder design parameters (least film thickness d' and incidence angle) are presented.

Ole Miss Engineer 1977

Ole Miss Engineer

No abstract provided.

Identification Of Hazardous Locations On City Streets, Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

The purpose of this study was to develop an effective method for identifying hazardous locations in Kentucky cities (over 2,500 population). Methods used in 45 other states were reviewed. Accident information for 69 of the 97 cities over 2,500 population was used to develop criteria for an identification method.

A Number Method was selected for initial identification of midblocks and intersections on arterial-collector streets and on urban freeways. A Rate-Quality Control Method was included in the form of a critical rate factor computed for each location. A set of critical rate curves was constructed for easy determination of hazardous locations. …

Positron Lifetime As A Function Of Grain Size, Hollis P. Leighly

Materials Science and Engineering Faculty Research & Creative Works

Published data on positron annihilation lifetime in copper as a function of grain size have been analyzed to show that there is a linear relationship between the internal grain boundary surface area, per unit volume, S v, and the positron lifetime, τ. The analysis indicates that grain boundaries are important in the trapping of positrons. It is suggested that the slope of the resulting straight line, dS v/dτ, can be used to determine the annihilation rate of the grain boundaries. © 1977 Springer-Verlag.

Voidless And Internally Sealed Concretes (Construction Report; Silas Creek Bridge, Us 27, Mp-009-0027-B0002), Assaf S. Rahal

Kentucky Transportation Center Research Report

Laboratory investigations on concretes containing super water reducers, PVP and Melment, indicated their suitability for field utilization. Wax beads have been used by other states in concretes for bridge slabs. This report describes the reconstruction of a four-span bridge having three experimental slabs and one conventional slab. Post-construction analyses of cores are included.

Heat Transfer In Beaded Thermocouples Mounted On Solid Substrates-- Application To Transient Measurement Errors, Karl Wally

Mechanical Engineering ETDs

Beaded thermocouples mounted on the surface of a solid for the purpose of measuring surface temperature are liable to introduce measurement errors as a result of heat transfer between the surface and the bead, and also because of the thermal inertia of the bead. For the prediction or correction of such errors, an accurate model of the thermocouple response is required. This paper uses a solution technique known as Quasi-Coupling to solve for the heat transfer in idealized beaded thermocouples mounted on idealized solids. The parameters controlling the thermocouple response are identified and the sensitivity of the response to these …

Estimating Hourly Solar Radiation For One-Axis Tracking Focusing Collectors, Carl E. Bingham, David M. Posner, Jerry O. Bradley

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

Performance simulations of focusing parabolic collectors are hampered by a limited amount of useful insolation data. Hourly values of total radiation on a horizontal surface are the most common data available from the National Oceanographic & Atmospheric Administration. This paper develops a method to convert this total horizontal radiation to direct radiation on the surface of the tracking collector.

Energy Conservation In Ammonia Production, Yash P. Gupta, Donald B. Wilson

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

The Federal Energy Administration currently is considering energy conservation goals for the industry. This paper presents methods for chemical/petroleum industry to conserve energy. Ammonia Production is used as an example.

Plutonium Assessment Modeling -- Government Policy, Non-Proliferation, And The Government Fence, Harold A. Kurstedt Jr., Joel A. Nachlas

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

Assessment modeling for the evaluation of plutonium as an energy resource is stressed, and generic mathematical model forms are outlined. Representative necessary objective functions are developed. Constraints and assumptions are listed. An example involving present-day light water reactor technology is demonstrated. Technical, environmental, and political implications are drawn. Specific new directions for analysis are suggested. The position of the boundary of government control and responsibility -- the government exclusion fence -- is shown to be a critical, but overlooked, constraint. Existing governmental uranium stockpiles may be an unmentioned, though important, constraint.

The Impact Of Regulation Upon The Oil And Gas Industries, Lee Carter

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

It is paradoxical that the oil and gas industries both ask for and resist the idea of regulation. Historic examples are given of how and why this is so. Since the Arab oil crisis of 1973, new and onerous rules for domestic producers have been introduced, first by improvization and more recently by a national energy plan. Both the good and bad features of the 1977 national energy plan are reviewed to generate words of commendation and words of warning about its effect on the oil and gas industries.

Agricultural Crop Drying And Space Heating Using A Solar Energy Intensifier, M. A. Hellickson, W. H. Peterson, S. E. Saienga, J. L. Julson

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

A solar energy-intensifier-thermal energy storage system was developed and tested under actual climatic conditions in South Dakota. Performance characteristics of the system are presented for its use in drying shelled corn and for agricultural space heating. Comparisons between solar and conventional drying between solar supplemented and conventional heating are reported.

Programming Language Requirements For Human Communication Structures Or Computer Conferencing, Computerized Conferencing & Communications Center, Peter Gordon Anderson

Computerized Conferencing and Communications Center Reports

Our overall goal is to be able, simply and quickly, to construct computer conferencing systems for new requirements, applications, and even experimental ideas or fantasies. One way to view this requirement is as the creation of a highly parameterized conferencing system itself. Our view, however, is that of a programming language; i.e., an integrated notational system for the specification of communication structures and the associated actions or computation to be taken by the computer system hosting the structure.

A communication structure consists of a group of people (and storage devices) each endowed with some characteristics, and some means of person-to-person …

Test 1236: Steiger Panther Iii St-325 Diesel 10-Speed, Also Steiger Panther Iv Cm-325 Diesel 20-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …

Test 1242: Ford 7700 Diesel 16-Speed, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF THE TEST PROCEDURE General Tractors are tested at the University of Nebraska according to the Agricultural Tractor Test Code approved by the American Society of Agricultural Engineers and the Society of Automotive Engineers or official Nebraska test procedure. The manufacturer selects the tractor to be tested and certifies that it is a stock model. Each tractor is equipped with the common power consuming accessories such as power steering, power lift pump, generator, etc., if available. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operating station. An official representative of …