Engineering Commons^™

Test 1312: International 484 Utility Diesel 8-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 …

A Feasibility Analysis Of A Directly Sun-Pumped Carbon Dioxide Laser In Space, Seiichi Morimoto

Dissertations and Theses

The possibility of using sunlight to pump a CW carbon dioxide laser has been analyzed. Such a laser could be of interest for such applications as space communication and power transmission. In order to optically pump CO₂ using sunlight, the intense vibrational-rotational absorption bands of CO₂ in the 4.3 micron spectral region would have to be utilized. The total pumping power from sunlight can be calculated from the known data of the solar spectral irradiance outside the atmosphere and the infrared absorption by carbon dioxide at 4.3 microns. The pumping power is proportional to the collector area of …

Test 1309: Massey-Ferguson 2675 Diesel 24-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 …

Geometric Tolerances, Clifford J. Joens

Graduate Research Papers

The writer teaches vocational drafting at the postsecondary level and has been unable to find suitable instructional material on the subject of geometric tolerancing. The existing books are either too lengthy and technical or are incomplete. Furthermore, none of them shows geometric tolerancing in the metric system, even though many of the industries which use geometric tolerancing also use the metric system. The purpose of this research project was to provide an instructional package to fill the void.

Test 1308: Allis-Chalmers 7045 Powershift Diesel 12-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 …

Block Floating Point Fft Statistical Noise Analysis Programs, Thomas Joseph Kolze

Electrical and Computer Engineering Technical Reports

The subroutines and programs used to perform a statistical noise analysis of the Block Floating Point FFT (BFPFFT) are briefly outlined and their listings are presented. Explanation of the required input parameters and the resulting output should make the program easy to use.

Support routines and techniques, including a useful plot subroutine, are also described.

Acuta Enews May 1979, Vol. 8, No. 5

ACUTA Newsletters

In This Issue

PRESIDENT'S MESSAGE

PARTY LINE

BITS & PIECES

POTPOURRI

MOUTH OF THE SOUTH

VIRGINIA VIEW

Problem Identification For Highway Safety Plan, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

To comply with Section 402, Title 23 of the United States Code, each state is required to prepare a annual highway safety program. Kentucky's program, which includes identification, programming, budgeting, and evaluation of highway safety projects, is intended to have a positive impact on the reduction of traffic accidents. The first step in the program, problem identification, requires systematic, statistical analyses of accident records. In-depth analyses of accident data were performed, and 25 problem areas were investigated. Accident rates were found for counties and cities in the following categories: total accidents, fatal accidents, accidents by driver age and sex, and …

A Technical Focus For Documenting The Effectiveness Of The Cooperative Owrt-Institute Water Resources Research Program, L. Douglas James

Reports

For years, the cooperative water resources research program of the Office of Water Research and Technology and the water resources research institutes in the respective states has been experiencing considerable difficulty in generating agency, congressional, and user support of a sort that attracts sufficient funding to maintain a dynamic research program. Efforts to increase support have included recruiting greater interaction with research user groups, expansion of the technology transfer program, cultivation of interaction of center directors and research users with congress, shifting requests for added funding within the research program from the allotment funding given the respective states to matching …

The Effects Of Artificial Destratification On Water Quality In Hyrum Reservoir, John W. Gill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Hyrum Reservoir, Utah, was studied for one year during an artificial destratification project. Previously Drury et al. (1975) had studied Hyrum Reservoir for one year of stratified and one year of destratified conditions. The redistribution of dissolved oxygen to the hypolimnion significantly changed conditions for chemical and biological activities in the lower depths of the reservoir. The Aphanizomenon bloom increased with each year of destratification. The reservoir was changed by destratification so as to be suitable habitat for trout on a year round basis. Aerobic conditions prevented iron from being released from the sediment into the aqueous phase. In summary …

Evaluation Of A Welded Wire Retaining Wall, Jerold Albert Bishop

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to evaluate the performance of a Welded Wire Retaining Wall and present design recommendations for its future use. Field data from the instrumentation of a Welded Wire Retaining Wall as well as laboratory data from a study of welded wire fabric as a reinforcing agent for soil was gathered. A study of the theory and practice of reinforced soil construction was made. On the basis of this study and the experimental data obtained, the wall is evaluated and design recommendations presented.

Spectral Signature Studies For Application In Deer Census Using Remote Sensing Techniques, Maran C. Pate

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was performed to determine the spectral signatures of deer and their natural background elements for censusing purposes. Consideration was given to atmospheric transmittance, acceptable flying weather, and terrain. Possible spectral bands between 0.3 and 14.0 μm were obtained (over a pathlength of 1500 feet at an altitude of 5000 feet) based upon atmospheric transmittance using the LOWTRAN 3B computer program. They are: 0.30 - 1.33, 1.49 - 1.79, 2.00 - 2.50, 3.00 - 3.16, 3.38 - 4.10, 4.59 - 5.05, and 8.00 - 13.33 μm, for transmittance greater than 75%. Weather conditions are favorable for flying and taking …

Feature Selection And Classifier Design With Applications To Remote Sensing Of Mule Deer, Manmohan M. Trivedi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The feasibility of an airborne system to census deer populations using remote sensing techniques is evaluated in this research. The analysis is based upon the study of spectral signatures of deer and various background objects. The deer detection problem is modeled as a multispectral pattern recognition problem where the classification is performed in a multidimensional feature space. A generalized scene, of which the winter range may be considered typical is used in the classification. It includes the deer, evergreen trees, sagebrush, and dry brush against a snow background. The signature stability study led to the conclusion that the direction-angles of …

Development Of A Liquefaction Opportunity Map For Cache Valley, Utah, Richard J. Greenwood

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A liquefaction opportunity map was developed for Cache Valley, Utah. The study was the initial phase to determine the potential for liquefaction in Cache Valley.

The method used in this study to develop the liquefaction opportunity map was based on a procedure developed by Youd and Perkins (1977).

This opportunity map is proposed to be combined with a map delineating liquefaction susceptible soils to produce a liquefaction potential map. The liquefaction susceptibility map is being developed in a companion study.

The liquefaction potential map will assist in the evaluation of earthquake response in general and microzonation in particular. The liquefaction …

A Liquefaction Potential Map For Cache Valley, Utah, Randall Jones Hill

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The identification of liquefaction susceptible soil deposits in Cache Valley, Utah and the relative potential that these deposits have for liquefaction were the two main purposes of this study. A liquefaction susceptibility map was developed to outline areas where liquefaction might occur during an earthquake. The susceptibility map was combined with a liquefaction opportunity map to produce a liquefaction potential map for Cache Valley, Utah. The opportunity map for Cache Valley was developed in a companion study, Greenwood (1978).

The development of the susceptibility map and the opportunity map and combining them to form a liquefaction potential map for Cache …

Wood Finishing For Tree Samples Of Five Honduran Species, Amilcar A. Cruz

Graduate Research Papers

This research report will study the application of four wood finishing techniques to samples of each of five species of Honduran hardwood.

These four wood finishing methods are: The varnish-method, the lacquer method, the antiquing method and the oil-rub method. The researcher will attempt to determine which is the best method for each of the five species.

A Solar Water Heater For Honduran People, Manuel De Jesus Umana Guerrero

Graduate Research Papers

The purpose of this study is twofold:

1. To help Honduran people by giving them basic ideas about how they can reduce their expenses using solar energy in the water heating process.

2 . To assist the Technical Educational Department at the Escula Superior Profesorado ''Francisco Moraran, " in Honduras, in identifying contents associated with Energy Sources.

A Tv-Calculator Teaching Aid System, Robert A. Pezzano

Electrical and Computer Engineering ETDs

A system is described in which calculations performed on an electronic calculator are displayed as an algebraic expression on a television or video monitor. A video module generates the timing signal for the video monitor and allows 16 lines of 16 characters to be displayed. The calculator module provides interfacing between the keyboard and display of a TI-59 calculator and the system. A computer module, containing a Z-80 microprocessor, interprets the calculator signals, simulates the calculator logic, and provides the video module with the information to be displayed.

Deep Penetration Of Electrons Into Homogeneous Media By The Method Of Condensed Collisions, Joseph Francis Janni

Chemical and Biological Engineering ETDs

The objective of this dissertation was to develop an accurate and efficient alternative to presently available methods of calculating the steady state penetration of electrons deep into homogeneous materials. A thorough solution must include scalar fluxes, net currents, angular distributions, and differential energy spectra. This research has successfully developed the method of condensed collisions, which provides an alternative to methods now in use for the solution of the electron transport problem. The condensed collsion method is general, but has been applied specifically to deep penetration electron transport to demonstrate its utility. The present aplication was for electrons having incident energies …

Development Of High-Pressure Liquid Chromatography Techniques For The Analysis Of Wastewater Effluent, Glenn Douglas Pierce

Civil Engineering ETDs

This investigation characterized a biological secondary wastewater effluent by conventional wastewater analysis parameters, evaluated the capabilities of activated carbon and macroreticular resin for recover­ing residual organics from the effluent, correlated conventional para­meters with carbon recoveries, developed high-pressure liquid chroma­tographic techniques for separation of organics in the recovered mixtures and identified a selected extract fraction. The Organics-Carbon Adsorbable Standard Method was adapted for use with a low turbidity effluent and a mass balance based on non-volatile total organic carbon was developed, demonstrating that the sorptive capacity of the system was not exceeded by a 60-1 sample. Ten individual carbon chloroform extracts …

Classical Modeling Of A Phosphate Molecule (Including 3-D Computer Graphics Display), Ronald A. Tafoya

Electrical and Computer Engineering ETDs

An investigation is made of the classical force terms necessary to model adequately the structure and interatomic forces of the phosphate molecule. The two principal considerations chosen for use in judging the performance of models were:

1. Agreement with empirical spectral data on normal mode vibrational frequencies

2. Agreement with other known physical characteristics of the phosphate molecule

The performance of all models was good. Agreement with normal mode frequencies and phosphorus-oxygen bond lengths ranged from an RMS error of 5.4% in Model one to an RMS error of 1.5% in Model Five. An examination was made of six different …

A Numerical Investigation Of Nonlinear Resistance In Second-Order Autonomous Dynamic Networks, John Jerome Bornholdt

Electrical and Computer Engineering ETDs

Most approaches to the analysis of autonomous nonlinear networks fall under one or more of three categories: topological techniques, stability analysis, and approximate methods. The first method is universal, linear or nonlinear. The application of computer techniques has given strong emphasis to the latter. Approximate methods can give results on estimations of how net­work components affect stability.

This paper is an investigation of the stability of nonlinear resistance in autonomous dynamic networks through approximate methods.

A system that is both unforced and time-invariant is called autonomous. Linear autonomous networks lend themselves to general analytic solutions. With nonlinear autonomous networks, however, …

The Effect Of Earth Media On Seismic Motion And Structure Response, Joseph John Fedock

Civil Engineering ETDs

An analysis is performed to determine the influence of the choice of a constitutive model for the earth medium upon the response of a rigid structure to seismic waves. A finite element method is employed to analyze the motions of an embedded structure in which the surrounding earth medium is represented by three different constitutive models. Linear elastic, linear viscoelastic, and elastic-plastic models of soil behavior are utilized in one- and two-dimensional analyses. The seismic disturbance is characterized by a pressure wave for the one-dimensional case while a system of horizontally propagating Rayleigh waves is used in the two-dimensional analysis. …

Test 1306: Deutz Dx-110 Diesel 15-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 1305: Deutz Dx-90 Diesel 15-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 …

Mass Transfer At The Edge Of A Rotating Disk, Jeffrey Malcolm Cohen

Chemical and Biological Engineering ETDs

A different approach to the problem of mass transfer to a rotating disk, employing less restrictive assumptions, has been undertaken to quantify the phenomenon of mass transfer at the disk's edge. Experimental work in support of theor­etical conjectures was performed as part of this work.

In order to include the effect of mass transfer at the edge on mass transfer to the entire disk, the equation of convective diffusion was solved in two dimensions over a region that extended beyond physical projection of active area of the disk. A synthesis of experimental results and theoret­ical considerations was used to specify …

Test 1304: Case 2090 Manual Diesel 8-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 1303: Case 2590 Powershift Diesel 12-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 …

Radio Frequency Sputtering Deposition And Characterization Of Thin Ferroelectric Titanate Film On Silicon Substrates, Cheng-Cheng Hu

Electrical and Computer Engineering ETDs

This work was done to achieve two goals: (1) To investigate and document the optimum deposition conditions for thin ferroelectric BaTi03 film on doped silicon substrates by r.f. sputtering; (2) to characterize the electrical properties of the metal-insulator-semiconductor (MIS) structure with BaTi03 as insulator and the memory characteristics involved.

Test 1302: Case 2390 Powershift Diesel 12-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 …