Engineering Commons^™

Soil-Bridge Abutment Interaction, Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

Presented herein are analyses of 6 bridge approaches. Lateral movement and settlement of the foundations and embankments are discussed. Result·s of slope stability and finite element analyses are related to measured movements. A graph for predicting approach pavement settlement is included. A theoretical approach model was used to run an extensive series of finite element analyses. Movements resulting from these analyses are presented with several variable model conditions. Variable conditions include embankment and foundation configuration, soil cohesion, and soil friction angle.

A Parallel Distributed Approach To Parsing Natural Language Deterministically, Stan C. Kwasny

All Computer Science and Engineering Research

The Determinism Hypothesis (Marcus, 1980) has given rise to much debate. The hypothesis makes explicit the idea that Natural Language interpretation need not depend in any fundamental way on the use of pseudo-parallelism or backtracking. We are exploring the consequences of this hypothesis in attempting to develop approaches to parsing which integrates current work in parallel distributed adaptive networks. We follow the basic approach of "Wait-and-See" parsing (WASP) which has shown the Natural Language interpretation of all but some varieties of "garden-path" sentences can be deterministically performed using a stack, a buffer for sentence constituents, and partitioned packets of rules. …

A Graph Browser With Zoom And Roam For Allegro Common Lisp, Steve B. Cousins, J. Andrew Fingerhut

All Computer Science and Engineering Research

This report describes an object-oriented tool that has been developed for viewing graphs on a Macintosh II computer using Allegro Common Lisp. The tool is useful for visualizing data which can be represented in tree or graph form. The graphs can be viewed for far away to get a global view, and from close up so that the labels on the vertices can be discerned. Scrolling can be performed at a nearly infinite number of resolutions, and a search feature makes it easy to find any node rapidly. Although the 'information space' on which the graph is logically plotted is …

Analysis Of Radiant Barrier Car Shade Performance: Preliminary Experiments And Proof Of Concept, Florida Solar Energy Center, Danny Parker

FSEC Energy Research Center®

The Florida Solar Energy Center (FSEC) has monitored several automobiles over the last two months in order to investigate how hot interior temperatures in parked cars might be reduced through the use of improved technology, car shades. We observed interior temperatures in un-shaded stationary automobiles in Cape Canaveral, Florida to commonly reach 150 °F and dashboard temperatures to rise to nearly 200 °F. We found the addition of a conventional cardboard car shade behind the automobile windshield on sunny days to reduce the interior air temperatures by an average of 15 °F. Dashboard temperatures were reduced by 40 °F.

We …

Extrema Of The Magnitude And The Phase Of A Complex Function Of A Real Variable: Application To Attenuated Internal Reflection, R. M.A. Azzam

Electrical Engineering Faculty Publications

Given a complex function F(ω) = |F(ω)|exp[jΔ(ω)] of a real argument ω, the extrema of its magnitude |F(ω)| and its phase Δ(ω), as functions of ω, are determined simultaneously by finding the roots of one common equation, Im[G(ω)] = 0, where G= (F′/F)² and F′ = ∂F/∂ω. The extrema of |F| and Δ are associated with Re G < 0 and Re G > 0, respectively. This easy-to-prove theorem has a wide range of applications in physical optics. We consider attenuated internal reflection (AIR) as …

Optimal Conjunctive Use-Sustained Yield Pumping Analysis For Eastern Arkansas, Rosalinda R.A. Cantiller, Richard C. Peralta, Hossein Azarmnia

Civil and Environmental Engineering Faculty Publications

The likelihood that irrigated agricultural acreages will increase in eastern Arkansas is high. This results from favorable agricultural soils, climate, and the availability of significant water resources.

Anomalous Temperature Dependence Of The Electric Field Gradient At The Y Site In In₀.₁Y₀.₉Ba₂Cu₃O9- Δ, Gary L. Catchen, Michael Blaszkiewicz, Anthony Baratta, Wayne Huebner

Materials Science and Engineering Faculty Research & Creative Works

Perturbed angular correlation (PAC) spectroscopy has been used to measure a well-defined static electric quadrupole interaction in a superconducting ceramic, In_0.1Y_0.9Ba₂Cu₃O_9-δ. Perturbation functions, Fourier transforms, and the derived PAC parameters are given for data taken at temperatures ranging from 77 to 1070 K. Indirect evidence is presented for the occupation of the Y site by the ¹¹¹In-¹¹¹Cd PAC probe. The derived electric field gradients were found to increase linearly with temperature. This result suggests the presence of soft, anisotropic vibrations in the structure. Additional evidence is presented …

Physical Mechanism Of Triggering In Trigatron Spark Gaps, F. E. Peterkin, P. F. Williams

P. F. (Paul Frazer) Williams Publications

Since the first trigatron spark gap was described by J. D. Craggs, M. E. Haine, and J. M. Meek [J. Inst. Electr. Eng. 93A, 963 (1946)], there has been controversy about the physical mechanism responsible for triggering the devices. In this letter we present experimental evidence that directly shows the sequence of physical events responsible for triggering in the gap we studied, and we present a model for trigatron triggering based on this information. We believe this model to be general and discuss it in light of existing literature. We briefly discuss the implications of the model for the engineering …

Mechanical Stemming Construction For Blast Holes And Method Of Use, Paul Nicholas Worsey

Mining Engineering Faculty Research & Creative Works

A stemming construction for a blast hole loaded with an explosive charge, comprising a tapering wedge member dispersed in the blast hole outwardly of the explosive charge with its narrower end facing outwardly toward the mouth of the blast hole, and particulate stemming material in the blast hole outwardly of the wedge member. Detonation of the explosive drives the wedge member into the stemming material to wedge the stemming material against the walls of the blast hole. The wedge member is preferably cone-shaped and can be provided with a stabilizing rod to prevent it from tilting.

Earthquake Priority Routes For Mclean County, Kentucky, David L. Allen, Vincent P. Drnevich, L. John Fleckenstein, Mostafa Sayedsadr

Kentucky Transportation Center Research Report

No abstract provided.

An Aeration Duct Design Model For Flat Grain Storage, Thomas C. Bridges, Douglas G. Overhults, Samuel G. Mcneill, G. M. White

Biosystems and Agricultural Engineering Faculty Publications

Traditionally most grain is stored in circular type bins which provide a convenient means for handling and management. With the excess grain production and government loan programs of the past few years, some producers have used rectangular structures and covered piles to complement their round storages. The recommended management practices used with round bins are still required in those alternative storages and may be more critical in obtaining a quality end product.

One such recommended practice used with round bins is aeration. This practice is used to maintain a uniform temperature in the grain mass, preventing condensation and "hot" spots …

Evaluation Of A Polymer Asphalt Additive -- Kraton (1118 And 4141), L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This report documents the use of two types of asphaltic concrete mixture designs. Both the control mixture and a Kraton rubber mixture were placed on sections of the Hazard Bypass, in Hazard, Kentucky. The location of the project is shown in Figure 1.

A Comparison Study Of Teaching Basic Drafting Concepts Using Computer-Assisted Equipment And Traditional Methods To Beginning Drafting Students At The Secondary Level, Thomas K. Farmer

Graduate Research Papers

The purpose of this research was to determine if basic drafting concepts and skills can be learned by students using computer-assisted drafting equipment as well as those students who were taught using traditional drafting equipment. The two methods used in this study were a traditional style, using drafting boards with drafting machines, and the second was using computer-assisted drafting equipment (CAD).

Evaluation Of Hydraway Edge Drain On Pennyrile Parkway, David L. Allen, L. John Fleckenstein

Kentucky Transportation Center Research Report

No abstract provided.

Test 1609: Case International 7110 And 7210 Diesel 18-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 1612: Case International 7140 And 7240 18-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 1610: Case International 7120 Diesel 18-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 1611: Case International 7130 And 7230 18-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 …

Measurement Of Flow Components On Upland Areas Using Dye Dilution Techniques, S. C. Finkner, John E. Gilley

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Dye dilution techniques can be used to measure rill and interrill-to-rill flow rates on upland areas. Procedures and equations for making flow measurements are described along with equations for estimating interrill length and width. If measurements of interrill length and rill width are available, use of simplified flow equations is possible.

Water and dye continuity concepts were utilized to develop generalized interrill-to-rill flow relationships. Measurement of flow from interrill-to-rill areas requires information on the concentration and rate of dye injection, and flow rate and dye concentration on both rill and interrill areas at a downslope sampling location. Dye dilution techniques …

The Lunar Date Of Ramesses Ii, Lee W. Casperson

Electrical and Computer Engineering Faculty Publications and Presentations

Due largely to the efforts of R. A. Parker, the various calendars used in Egypt are now fairly well understood. Dates which the Egyptians expressed in both their civil and lunar calendars can sometimes be determined exactly, and the study of such dates has been extremely important in efforts to establish an accurate Egyptian chronology. However, the successful use of this method obviously depends on one's ability to reconstruct accurately the astronomical and observational conditions on which the lunar calendar was based. The author re-examined the methods used to calculate lunar dates and have suggested some ways in which those …

A General Correction For Spontaneous Potential Well Logs In Fresh Water, Cary L. Mcconnell

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A generalized empirical relationship was found which corrects spontaneous potential (SP) readings from well logs run in freshwater wells. The function was found by correlating measured and calculated spontaneous potentials. The calculated values are based on actual measured ionic content of groundwaters and are fully corrected for environmental effects and ion species. Without the empirical relationship the electrically equivalent to an NaCl solution resistivity, Rwe, is generally too low for fresh waters when computed with existing commercially available functions. The low Rwe makes the water appear saltier than it really is. One hundred sixty-two (162) individual formations from one hundred …

Design Of Automotive Structural Components Using High Strength Sheet Steels Structural Strength Of Cold-Formed Steel I-Beams And Hat Sections Subjected To Web Crippling Load, Shin-Hua Lin, Ling-En Hsiao, Chi-Ling Pan, Wei-Wen Yu

CCFSS Library (1939 - present)

INTRODUCTION When cold-formed steel beam webs are subjected to partial edge loading, they may fail by web crippling rather than bending of the beam. Web crippling is caused by a highly localized intensity of the load or reaction. Because of the complexity of the web crippling behavior, empirical expressions are presently used for the design of cold-formed steel beams in buildings and automotive structural components to prevent web crippling. 1,2,3. The research on the structural behavior of cold-formed steel beam webs subjected to web crippling has been conducted at Cornell University and the University of Missouri-Rolla (UMR) under the sponsorship …

Hydrogen For Power Applications. Task 2: Storage Of Hydrogen In Solid, Liquid And Gaseous Forms. June 1988. 1 V., Florida Solar Energy Center, David L. Block

FSEC Energy Research Center®

This report provides a comprehensive account of the major developments and the issues of concern in the storage and handling of hydrogen in all three forms, namely, solid (as metal hydrides), liquid and gaseous. Keeping in mind that ground transportation has the potential to be the most obvious and widespread utilization vector for hydrogen, particular effort is made to compare alternative storage and handling systems of hydrogen with that of gasoline. Conclusions and recommendations are based on a systematic and unbiased analysis of the pros and cons of various storage and handling options for hydrogen, both demonstrated and projected.

Energy-Efficient Florida Home Building Manual (Revised 1992), Florida Solar Energy Center, Robin Vieira

FSEC Energy Research Center®

This manual presents practical, real-life recommendations on how to design and build homes in Florida. It contains information specific to our state's climate and lifestyles, rather than the overly general information found in most residential building publications. The book was developed in 1992 as an all-inclusive guide for anyone interested in constructing homes that are efficient. It is packed with information that will help you plan such homes, choose the best materials and products for the homes, and if you are a builder or developer - sell and profit from them. The files are all in PDF format. The file …

Theoretical & Computational Investigation Of Algorithms For Simultaneous Heat & Moisture Transport In Buildings. Task 2 Final Report, Milestone #218 & 220 Combined. Iv (Copies 1ref, 2,3), Florida Solar Energy Center, Alp Kerestecioglu

FSEC Energy Research Center®

In keeping with the national energy policy goal of fostering an adequate supply of energy at a reasonable cost, the United States Department of Energy (DOE) supports a variety of programs to promote a balanced and mixed energy resource system. The mission of the DOE Solar Buildings Research and Development Program is to support this goal, by providing for the development of solar technology alternatives for the buildings sector. It is the goal of the Program to establish a proven technology base to allow industry to develop solar products and designs for buildings that are economically competitive and can contribute …

Whole-Building Moisture Experiments And Data Analysis. Draft Task 1 Final Report, Milestone #219. February 5, 1988. 91 P., Florida Solar Energy Center, Adel A. Kamel

FSEC Energy Research Center®

For four months (August -November) in 1987 whole -building moisture capacitance experiments were done on a townhouse in Cocoa, Florida. The experiments were designed to: 1. Observe the response of a building to imposed moisture flux 2. Determine the moisture storage capacity of the building and furnishings 3. Evaluate simple models designed to predict the response of room air humidity ration to pulses of moisture 4. Assess two innovative approaches to cooling (off-peak cooling and DESRAD) The results of the tests indicated that moisture storage in the furnishings is much greater than moisture storage in the air. The bare building …

Acuta Enews June 1988, Vol. 17, No. 6

ACUTA Newsletters

In This Issue

President's Message

Party Line

Bits & Pieces

How much stress can fiber take?

AT&T Kills 800 Service

Analysis Of Accidents In Construction And Maintenance Work Zones, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

This report includes documentation of the two following phases of the study : 1) analysis of statewide accidents for the period 1983 through 1986 in which "road under construction" was listed as a contributing factor; and 2) analysis of accident data and traffic control devices used at 20 case study locations. At the case study locations, accident data were analyzed for a three-year period before construction and compared to the period during construction.

Results from the statewide analysis indicate that even though the level of construction and maintenance activity is higher and traffic volumes have increased, there have not been …

Laboratory Evaluation Of Edge Drains, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This report documents laboratory test results performed on four brands of highway edge drains. The four brands included in this study are Hydraway (by Monsanto), Akwadrain (by International Construction Equipment, Inc.), Advantage (by Advanced Drainage Systems), and PDS 40 (by Pro Drain Systems).

Wage Survey Of Road And Street Employees In Indiana Counties And Cities, Herpicc

Indiana Local Technical Assistance Program (LTAP) Publications

Wages, benefits and insurance plans for employee classifications common to road and street maintenance organizations are reported in this publication. The figures were obtained from a March 1988 questionnaire sent to all Indiana County Highway Departments and from the "Indiana Municipal Salaries, Wages and Fringe Benefits, 1988" published by the Indiana Association of Cities & Towns.

The information in this publication is intended to assist the local road and street agencies in developing the wage plans for next years budget by providing comparative information from other organizations in the state. Exact duties and responsibilities vary and are not reflected in …