Digital Commons Network^™

Aboveground Fuel Oil Storage Tanks, Lawrence George Palmer

Theses

A review of the American Petroleum Institute Standard 650 and Appendixes points out the advantages of using high strength steel and the variable point design method (Appendix K) to obtain reasonably uniform shell stresses. Design limitations imposed by notch toughness and residual stresses are pointed out.

Design considerations for the installation of an internal floating roof in a standard cone roof tank are discussed. Methods of calculating evaporation losses and an economic justification for a floating roof are included. Budget estimate figures have been compiled as a function of tank capacity for tanks, site preparation and tank ringwall or piled …

Sidestream Tower Fractionation : A Short-Cut Calculation Method, Richard David Prickett

Theses

A short-cut procedure has been developed for making calculations on a complex fractionation tower. A Simplification of the Thiele-Geddes plate-to-plate procedure provided the basis for the short-cut procedure. The application discussed in this paper is for a tower with a liquid sidestream drawoff in the rectifying section.

The tower was broken at the feed point and sidestream drawoff locations into three calculation sections. The fractionation in each tower section can then be represented by a rigorous series solution expressed in terms of absorption or stripping factors. These rigorous equations can then be simplified by the use of average absorption or …

A Study Into The Feasibility Of Constructing A Pedestrian Mall In Newark Downtown, Stephen Wesley Warren

Theses

Newark's central business district has been suffering steady economic decline for at least a decade. In an attempt to halt this trend, and perhaps even reverse it, a feasibility study has been conducted toward the goal of implementing a pedestrian mall in the area.

This study was accomplished by conducting both field examinations of Halsey Street, the area under consideration, and investigating data from other existing United States pedestrian malls.

The results of this study show that it is feasible to construct a permanent pedestrian mall on Halsey Street and that the benefits of doing so far outweigh the costs …

Digital Computer Solution Of Electromagnetic Transients In Large Power Systems, Bijan Navidbakhsh

Dissertations and Theses

This thesis is an introduction to the solution of electromagnetic transients by a combination of the Bergeran method of characteristics and the application of trapezoidal rule of integration.

Three test examples solved by digital computer illustrate the step by step solution and computer programming.

To compare this method with the Laplace transformation technique, a test problem solved by both methods and also digital computer is illustrated. In conclusion, the advantages and disadvantages of both methods are compared.

The Random Sequence Closing Control System, Henri Bernard Joyaux

Dissertations and Theses

This thesis describes a digital control system used by the Network Analog Group of the Bonneville Power Administration. This system, the Random Sequence Closing Control System, provides automatic control for a special purpose analog computer used in the study of switching surge over voltages on power transmission lines. This system, which uses pseudorandom data, has made it feasible to analyze switching surge phenomena on a statistical basis.

Resonant Raman Scattering From Iodine: Spectral Changes With Excitation Frequency, P. F. Williams, D. L. Rousseau

P. F. (Paul Frazer) Williams Publications

We have recorded high-resolution resonant Raman spectra of molecular iodine which show very pronounced systematic spectral band-shape variations with incident laser frequency. This frequency dependence and the presence of the multiple overtones in resonant Raman scattering from iodine may be explained by a theory in which the scattering intensity depends on Franck-Condon overlap integrals. We have obtained semiquantitative agreement between the observed spectra and spectra calculated from this theory.

Current Design Practice For Bridge Superstructures Connected To Flexible Superstructures, Jack H. Emanuel, J. Leroy Hulsey, John Best, Joseph H. Senne, Leroy E. Thompson

CCFSS Library (1939 - present)

No abstract provided.

Tartan Surfacing For An Equestrian Overpass, Donald C. Newberry Jr.

Kentucky Transportation Center Research Report

The location of I 64 in Jefferson County traverses Seneca Park, noted for its scenic beauty and superior recreational facilities. A bridle path in Seneca Park necessitated construction of an overpass for equine traffic. A non-slip and sound-deadening, resilient surface was essential for aesthetics and safety. Tartan, a rubbery mat developed primarily for race course and paddock surfaces, was specified and installed on the overpass.

High-Intensity Reflective Materials For Signs, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

Field observations and laboratory tests and evaluations were conducted on High-Intensity and Engineering grade materials (Scotchlite), manufactured by the Minnesota Mining and Manufacturing Company, and were compared in regard to reflectivity, durability, and cost.

The High-Intensity type materials were found to have outstanding performance characteristics in comparison to Engineering Grade materials. The material significantly enhances sign legibility under low-beam illumination, and accelerated weathering tests showed superior durability.

Characteristics And Models Of Outdoor Recreational Travel, Jerry G. Pigman, John A. Deacon

Kentucky Transportation Center Research Report

The purpose of this investigation was to examine the characteristics of outdoor recreational travel and to evaluate models of travel flow from population centers throughout the United States to outdoor recreational areas in Kentucky. Data were obtained by means of a license-plate, origin-destination survey at 160 sites within 42 recreational areas and by means of a continuous vehicle counting program at eight of these sites.

Among those characteristics of outdoor recreational travel which were examined in more detail were vehicle occupancies, vehicle classifications, and trip-length distributions. Vehicle occupancy was found to depend on the type of recreational area, distance traveled, …

Engineering Geognosy Of The Western Coal Field, W. Mccann, Tommy C. Hopkins, Robert C. Deen

Kentucky Transportation Center Research Report

Engineering soils and geologic reports are invaluable tools for engineers, industrial leaders, community planners and administrators during preliminary stages of planning and site selection for construction projects. Such information can be used to great advantage by planners in making soil and geologic reconnaissance surveys, in organizing and checking field surveys, in correlating and predicting performances of soil and geologic materials, and in locating construction materials and resource deposits. Recognizing the need for this type of information, the Division of Research, Bureau of Highways, Kentucky Department of Transportation, has undertaken a study to report the engineering geognosy of Kentucky. The report …

Pavement Roughness, Measurement And Evaluation, Rolands L. Rizenbergs, James L. Burchett, Larry E. Davis

Kentucky Transportation Center Research Report

Vertical accelerations of a passenger in an automobile are automatically summed while traveling a section of road at 51.5 mph (23.0 m/s). A roughness index is obtained by dividing this sum by the time elapsed during the test. Continuity in measurements since 1957 has been preserved through correlations among successive vehicles involved and reference pavements.

In general, bituminous construction has yielded smoother-riding surfaces than concrete construction. The smoothness of concrete pavements, however, has improved on those projects where slip-form paving was used. Interstate and parkway (expressway) construction continues to yield smoother pavements than other major construction. The rate of increase …

The Formation And Properties Of Machining Burrs, Laroux K. Gillespie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The formation of burrs in Machining Operations occurs by three Basic Mechanisms:

1) Lateral Extrusion of material

2) Bending of the chip

3) Tearing of the chip form the workpiece

Each of these mechanisms has been studied analytically and compared to experimental results. The agreement between predictions and measurements has been found to be close.

Drilling, milling, grinding, and turning burrs were produced in 303Se stainless steel and their properties were related to tool geometry, feedrates, and depth of cut. One thousand measurements were made and subsequently analyzed by analysis of variance techniques. The properties measured include burr length and …

Long-Term Retention Of Tritium In Man, Chin-Jen Ou

Electronic Theses and Dissertations

[No abstract provided.]

Remedial Stability Analysis Of Unstable Eastern Approach Embankment, Bluegrass Parkway Bridges Over Chaplin River, Tommy C. Hopkins, S. M. Yoder

Kentucky Transportation Center Research Report

In a meeting held on March 7, 1973, the Division of Research was requested to perform a supplementary slope stability analysis of the unstable, eastern approach embankment and foundation located at the crossing of the Bluegrass Parkway over Chaplin River and extending between Stations 2317+14 and 2321+00. Previously (see referenced report), two remedial schemes had been considered for increasing the stability of the unstable soil mass to an acceptable level. Those included: 1) loading the toe area of the existing, eastern approach slope with a berm, including a sloping berm, and 2) unloading the upper portion of the eastern slope …

Air Pressures Over Reservoir, Canal, And Water Catchment Surfaces Exposed To Wind, Allen Ray Dedrick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Surface air pressure differentials that occur over reservoirs, canals, and water-catchment aprons in high-wind conditions were determined by the use of models in a wind tunnel. Such information was needed concerning the magnitude and location of destructive wind forces on water barriers constructed of exposed flexible membrane liners. Rigid models, without a membrane, were used to measure airpressure differentials.

Air-pressure differentials were dependent on geometric configuration and were independent of viccous forces above the critical Reynolds number which was determined experimentally. The geometric factors studied with respect to reservoirs and canals included approach slope, approach slope length, leeward slope, and …

A Hydrologic Model Of The Provo River Basin, Utah, Craig T. Jones

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to develop a general hydrologic model for use on a digital computer and prove its validity by applying it to a management study of the Provo River Basin. Hydrologic equations have been proposed for each major hydrologic occurrence within a river basin. By linking these equations through restrictions on continuity of mass, a general hydrologic model can be obtained. Such a model becomes the basic tool for studying the management of the river basin hydrology. The paper describes the model components, parameter identification program, and the river basin management program.

State Estimation In Discrete-Time Linear Systems With Quadratic Form Observers, James Parish Shipley Jr.

Electrical and Computer Engineering ETDs

The problem considered in this dissertation is that of estimating the state of a system with a linear plant equation but having a measurement function which is a quadratic form in the state. It is first demonstrated by constructive proof that the problem has a solution if the controls have large enough magnitude, and some requirements on the minimum size of the control are discussed.

Three algorithms for estimating the state are obtained, one using the technique of maximum likelihood, the other two utilizing a more general Bayesian approach. In addition, a first-order approximate conditional mean filter is included for …

Electrical Parameter Correlations For Radiation Hardness Assurance Of Operational Amplifiers, John L. Mullis

Electrical and Computer Engineering ETDs

In the manufacture of integrated circuits, a consider­able amount of attention is given to controlling fabrication processes. This is required if high production yield and consistent quality are to be obtained. In addition to moni­toring critical parameters which are influenced by variables in processing, the packaged circuits undergo a variety of tests to determine whether they meet the desired electrical and environmental quality specifications. The problem of quality assurance is accepted and treated as an essential part of the production cycle.

A College Level Helicopter Curriculum, Eugene B. Krueger

Undergraduate Theses and Senior Projects

No abstract provided.

Dosimetry For High Intensity, 2 Mev Radiation., Clifford Ledth Schroeder

Electrical and Computer Engineering ETDs

The purpose of this effort is to evaluate several types of dosimeters being used with the 2-MeV flash X-ray facilities at The University of New Mexico and the Air Force Weapons Laboratory (AFWL). The types include lithium fluoride and calcium fluoride thermaluminescent dosimeters (TLD's), thin foil calorimeters, p-i-n diodes, cobalt glass chips, and #25 purple Cinemoid. The evaluation includes a comparison of dose measurements, repeatability, and useful ranges. This report describes fundamental physical mechanisms by which photons and high energy electrons interact with matter, the physical mechanisms of different dosimeters, and techniques for using the dosimeters. The calcium fluoride TLD's …

Reversed And Repeated Lost Tests Of Full-Scale Steel Frames, Lauren D. Carpenter, Le-Wu Lu

CCFSS Library (1939 - present)

No abstract provided.

A State-Of-The-Art Application Of Computer Technology-Vending Computer Generated Games For Profit, Stanley M. Levin

Retrospective Theses and Dissertations

The recent and rapid advances in micro electronics technology has resulted in the continued and dramatic reduction in the cost and size of logic circuits used in computers and computer interfaced devices. This technology now makes it possible to purchase a sophisticated computer system and multiple terminal devices for less than $60,000. The subject of this Research Report is to show the feasibility of applying this computer system, including 32 phone line interfaced video display terminals and a time sharing software package, to vend computer generated games for profit.

Vibratory Roller Evaluation, Donald C. Newberry Jr.

Kentucky Transportation Center Research Report

In a field evaluation of vibratory rollers, an end-result specification based on a statistical analysis of densities obtained on previous construction projects indicated 98 percent of laboratory density (Marshall) to be desired for Bituminous Concrete, Class I Base. The minimum average of 5 density tests was set at 96.4 percent. Conventional rollers, vibratory rollers, and combinations thereof were qualified on the basis of density-growth curves determined on one or more 1000-foot test sections. An overall average compaction of 97.8 percent of Marshall density was obtained on the Cumberland Parkway project. Similar controls initiated on the Green River Parkway project were …

A Survey Of Reflective Sheeting For Highway Signs, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

A questionnaire (see the APPENDIX) was sent to highway agencies in all 50 states, the District of Columbia and Puerto Rico for the purpose of surveying state practices in regard to reflective sheeting purchase, usage specifications, testing, etc. The response was 100 percent and, thus, demonstrated a high degree of interest in the subject.

Responses to the questionnaire are tabulated on the attached tables. An attempt was made to report answers provided by the agencies without interpretation except in a few isolated cases where the necessafy information was available to properly relate the response to a given question. In a …

Stability Of A Side-Hill Embankment, Tommy C. Hopkins, Harry F. Girdler, Steve M. Yoder

Kentucky Transportation Center Research Report

The report submitted herein is a case history describing observations and in-depth analyses made at a highway site involving a massive, unstable side-hill embankment located on I-64 in Boyd County. The in-depth study was initiated in January 1973. The I-64 site was selected for study because it contained several design, construction and maintenance features as well as soil types that are typical of many highway embankments in Kentucky. Side-hill fill situations are common design problems and oftentimes have required extensive maintenance after construction. Major objectives of the study were to 1) determine the causes of instability of the I-64 embankment, …

Measurement And Analysis Of Data In Turbulent And Transition Regions Of Two-Phase Flow, Akula Venkatram

Theses and Dissertations

The main aim of the project was to examine the possibility of using the hot wire anemometer to detect particles in a fluid. It was hoped that the presence of the particles would affect the autocorrelation plot and the energy spectrum of the velocities measured in the fluid.

Trajectories Describing The Evolution Of Polarized Light In Homogeneous Anisotropic Media And Liquid Crystals, Rasheed M.A. Azzam, N. M. Bashara, B. E. Merrill

Electrical Engineering Faculty Publications

Trajectories are given that describe the evolution of the ellipse of polarization in the complex plane for light propagating in a homogeneous anisotropic medium and along the helical axis of a cholesteric liquid crystal. For the general homogeneous anisotropic medium that exhibits combined birefringence and dichroism the trajectory is a spiral that converges to the low-absorption eigenpolarization. For pure birefringence the trajectory becomes a complete circle that encloses one eigenpolarization, whereas for pure dichroism the trajectory becomes an arc of a circle that ends at the low-absorption eigenstate. The case of a cholesteric (or twisted nematic) liquid crystal leads to …

The Alligators Will Get You, If You Don't Watch Out!, Tim Brady

Publications

This article relates which tools can help pilots prepare to land at unknown airports.

Transient Convective Heat Transfer In Closed Containers During And After Gas Injection, Jennings Donell Means

Theses and Dissertations

This dissertation presents experimental data correlations for the spatially - averaged convective heat transfer coefficient for thin walled closed containers during and after gas injection. The different modes of heat transfer were identified, and correlations were made for each. Correlations are presented for the injection period, post-top injection, post-bottom injection, post- tangential, post-radial injection, and post-ejection heat transfer for various tank geometries. Of special significance are the very high heat transfer rates that were shown to be present in some cases immediately after injection. Heat transfer rates were shown to be, for a short period, up to almost two orders …