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The Design And Development Of A Power Hybrid, Robert J. Albert

Retrospective Theses and Dissertations

This report discusses the design, development and the fabrication of a power hybrid. Foldback current limiting which is self reseting is used whereby withstanding indefinitely a short circuit. Thermal design considerations and thermal analysis are described as well as stability analysis. The maximum current capability of this design is four amperes and forty watts can be dissipated in the power transistors over a wide range of temperatures.

Design Curves For Groundwater Mounds Beneath Recharging Basins, Jack Weinstein

Retrospective Theses and Dissertations

Design curves are developed to simplify solution of the Hantush (1967) equation for groundwater mound build-up under a rectangular recharge basin. Curves are developed by analyzing a large number of solutions to the theoretical equation. Two sets of curves are developed, one for build-up beneath the center of the basin, the second for build-up anywhere in the field. Center-point curves are presented for 3 basins with length to width ratios of 2 to 1, and were easily developed. The more generalized curves are developed for the limited case of a 200 ft by 100 ft basin and are complicated by …

Simulation Of Domestic Hot Water System Using Trnsys, Mohammed Shafi Uz Zaman

Retrospective Theses and Dissertations

A Transient Simulation program (TRNSYS) was used to formulate the simulation of a domestic hot water system. Solar percent utilization and collector efficiency was observed for different set temperatures and hot water demand. The effect of hot water demand pattern on these parameters was likewise investigated. Regression analysis was used to forecast solar percent utilization with respect to set temperature and daily hot water demand.

Method And Apparatus For Water Jet Drilling Of Rock, David A. Summers, Marian Mazurkiewicz, Dwight J. Bushnell, James Blaine

Mining Engineering Faculty Research & Creative Works

Rock drilling method and apparatus utilizing high pressure water jets for drilling holes of relatively small diameter at speeds significantly greater than that attainable with existing drilling tools. Greatly increased drilling rates are attained due to jet nozzle geometry and speed of rotation. The jet nozzle design has two orifices, one pointing axially ahead in the direction of travel and the second inclined at an angle of approximately 30° from the axis. The two orifices have diameters in the ratio of approximately 1:2. Liquid jet velocities in excess of 1,000 ft/sec are used, and the nozzle is rotated at speeds …

The Development Of An Interactive Industry/Academic Power Engineering Education Program At The University Of Missouri-Rolla, Earl F. Richards, Max Darwin Anderson, Jack F. Morris, J. Derald Morgan, George Mcpherson, David R. Cunningham, Robert H. Nau, Edward Duke Tweed

Electrical and Computer Engineering Faculty Research & Creative Works

This paper describes the development of a unique andinno-vative program in power engineering education enhanced through an Industry/Academic interrelationship. This program is devoted to both the teaching and the practice of power engineering. The development of the Industry/Academic relationship and its value as a model for power engineering education are related. A summary of present and proposed future activities concludes the report. Copyright © 1978 by The Institute of Electrical and Electronics Engineers, Inc.

Vehicle Detection Using A Magnetic Field Sensor, Stanley V. Marshall

Electrical and Computer Engineering Faculty Research & Creative Works

The measurement of vehicle magnetic moments and the results from use of a fluxgate magnetic sensor to actuate a lighting system from the magnetic fields of passing vehicles is reported. A typical U.S. automobile has a magnetic moment of about 200 A-m2(Ampere-meters2), while for a school bus it is about 2000 A-m2. When the vehicle is modeled as an ideal magnetic dipole with a moment of 200 A-m2, the predicted results from an analysis of the sensor-vehicle geometry agree closely with observations of the system response to automobiles. Copyright © 1978 by The Institute of Electrical and Electronics Engineers. Inc.

A Search For An Edge Image Algorithm For Application In An Automatic Registration System, Ronald J. Wojtasinski

Retrospective Theses and Dissertations

No abstract provided.

Steel Deck Institute Design Manual For Form Decks And Roof Decks, Steel Deck Institute

Steel Deck Institute (SDI) Specifications and Manuals (1939 - present)

No abstract provided.

Testing Of Solar Collectors By A Standard Method, Harry J. Sauer Jr., Bassem F. Armaly

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

A description of the recently adopted standard for testing solar collectors "ASHRAE STANDARD 93-77, METHOD OF TESTING SOLAR COLLECTORS BASED ON THERMAL PERFORMANCE" is presented. Results from the standard could be used to simulate the transient performance of an installed solar system.

Web Crippling Strength And A Combination Of Bending And Web Crippling Of Cold-Formed Steel Beams, Nipon Hetrakul

Doctoral Dissertations

"The web crippling strength of cold-formed steel beams was investigated experimentally. In this investigation, due consideration was given to the possible influence of bending moment and shear force on the web-crippling loads.

For the subject of web crippling strength, the study involved the testing of 140 built-up beams having single unreinforced webs and 152 I-beams having double webs. In addition, 66 beam tests were conducted for the case of combined bending moment, shear and web crippling.

The experimental results obtained from the beam tests conducted at the University of Missouri-Rolla and the early tests performed previously at Cornell University were …

The Biology Instrument For The Viking Mars Mission, Frederick S. Brown, H.E. Adelson, M.C. Chapman, O.W. Clausen, A.J. Cole, J.T. Cragin, R.J. Day, C.H. Debenham, R.E. Fortney, R.I. Gilje, D.W. Harvey, J.L. Kropp, S.J. Loer, J.L. Logan, Jr., W.D. Potter, G.T. Rosniak

Systems Engineering Faculty Works

Two Viking spacecraft have successfully soft landed on the surface of Mars. Each carries, along with other scientific instruments, one biology laboratory with three different experiments designed to search for evidence of living microorganisms in material sampled from the Martian surface. This 15.5-kg biology instrument which occupies a volume of almost 28.3 dm3 is the first to carry out an in situ search for extraterrestrial life on a planet. The three experiments are called the pyrolytic release, labeled release, and gas exchange. The pyrolytic release experiment has the capability to measure the fixation of carbon dioxide or carbon monoxide into …

Farm Irrigation System Evaluation: A Guide For Management, John L. Merriam, Jack Keller

Civil and Environmental Engineering Faculty Publications

This manual describes and explains detailed procedures for field evaluation of the performance of several types of sprinkle, surface, and trickle (drip) irrigation systems and of management practices. Most chapters include lists of equipment needed for performing these evaluations, give step-by-step instructions for gathering data in the field, show sample forms for recording and organizing these field data, and present sample studies that demonstrate the entire process. The book includes analyses and recommendations for a few actual case studies.

The introduction states and explains the general concepts of uniformity, efficiency, and management that are used in evaluating each system and …

Vulnerability Of Water Supply Systems To Drought, D. T. Jensen

Reports

The objective of this study is to develop a relatively simple and practical method for improving the availability and reliability of information about droughts to those responsibile for water supply management and planning. The information technique developed provides an objective basis for the selection of wate rsupply management alternatives during periods of drought. The derived drought information can assist water supply planners and managers in identifying priorities among proposed water supply developments fron consideration of water supply vulnerability and exisitng drought severity levels. Two drought indices are developed to achieve the overall objective of the study: (1) the drought severity …

1978-87 Publications Of The Uwrl, Utah Water Research Laboratory

Reports

This brochure is a listing of publications of the Utah Water Research Laboratory, College of Engineering, at Utah State University, Logan, Utah, for 1978 through 1985. Six categories of publications are included: Atmospheric Water Resources Series, General Series, Hydraulics and Hydrology Series, Water Resources Planning Series, Water Quality Series, and Other Publications. Publications out of print may obtained on a short time loan basis from the UWRL Library. When inquiring about or ordering Utah Water Research Laboratory publications please address: Utah Water Research Laboratory Publications Utah State University Logan, UT 84322-8200

Design And Operating Criteria For Rural Water Systems, James E. Garton, Gary L. Goodwin, Richard C. Peralta

Civil and Environmental Engineering Faculty Publications

Rural homesites in the United States require the availability of high quality water. One means of meeting this need is with the rural water district, a system composed of tank storage and a pipe network serving a number of homes. The tanks are filled by pumping during periods of minimal water use and serve as the immediate water source for homes.

Optimum design requires consideration of not only immediate needs and economic factors but also the possibility of expansion at some future date. Accurate prediction of monthly usage rates is sometimes necessary to set contractural needs. Daily water use per …

Water Quality Enhancement By Point Destratification, Richard C. Peralta, J. E. Garton

Civil and Environmental Engineering Faculty Publications

No abstract provided.

Information Systems For Natural Resources Managers: An Exercise In Interfacing, Connie L. Knapp

Marine Affairs Theses and Major Papers

This thesis proposes guidelines for achieving the human interfaces which are requisite to the development and operation of natural resources information systems. Conclusions were drawn from an evaluation of past experiences in building and attempting to use these types of systems. Both successful and unsuccessful systems were considered, as well as the current effort in Rhode Island to develop a system for coastal resources managers. Examples are presented to support particular conclusions and recommendations. The perspective is nontechnical. Examples and recommendations, therefore, are conceptual rather than quantitative or technical. While a variety of mechanisms can be used to achieve the …

Concrete Ships, Mark L. Lavache

Marine Affairs Theses and Major Papers

The incentive behind this study is based on a two-fold premise: 1) that a comprehensive outline of the historical development of concrete shipbuilding and its related technologies is either non-existent or defies discovery, and 2) that although this study is neither based on a hypothesis, nor intended to resolve a problem area or promote a position, its merit lies in its inductive nature. Included are explanations of of the various compositions, uses, and construction techniques relating to reinforced concrete, ferro-cement, and prestressed concrete.

Ultrasonic Testing For Determining Dynamic Soil Moduli., R. W. Stephenson

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Determination of Dynamic E- and G-Moduli of a Silty Clay Material Was Made by Measuring Directly the Velocity of Both Ultrasonic Longitudinal and Shear Waves Transmitted through the Material. the Equipment, developed at the University of Missouri-Rolla, Allows Dynamic, Nondestructive Testing of Soil Materials to Be Conducted Rapidly and Easily.

Phase 1 Inspection Report: National Dam Safety Program. Osage - Gasconade Basin. Little Prairie Dam, Phelps County, Missouri, Anderson Engineering, Inc., Springfield, Missouri, Hanson Engineers, Inc., Springfield, Illinois

Missouri Dam Safety Inspection Reports

This report presents the results of field inspection and evaluation of the Little Prairie Dam. It was prepared under the National Program of Inspection of Non-Federal Dams.

Seatbelt Usage In Kentucky [Jan. 1978], Kenneth R. Agent, Michael Barclay

Kentucky Transportation Center Research Report

In this report, the effectiveness and usage of seatbelts by Kentucky motorists and factors affecting usage are examined and identified. Data were obtained from three sources: field observations, accident reports, and a questionnaire.

Kentucky drivers and passengers were found to have lower seatbelt usage rates (slightly under 10 percent) than drivers and passengers in other states. The accident data showed that the chances of being killed or severely injured is greatly reduced by wearing a seatbelt. Seatbelts reduced the chance of being killed by a factor of six and the chance of being severely injured by a factor of two. …

Discussion, Ronald A. Kohser

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

Disk And Strip Forging With Side Surface Foldower: Part 2: Evaluation Of The Upper-Bound Solutions, Ronald A. Kohser, B. Avitzur

Materials Science and Engineering Faculty Research & Creative Works

The upper-bound solutions developed in Part 1 are evaluated with regard to their ability to produce a lower value for required power (load, pressure, or work). Comparisons made with existing solutions such as the triangular field solution and one-zone bulge solution show that for strip, each solution has a domain of geometry and friction in which it is superior. The new solution produces a lower upper-bound for conditions of high interface, friction and relatively thin specimen, the area where fold over is the observed mode of flow. For solid cylindrical disks, the solution fails to improve upon existing analyses, but …

5th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla

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

This volume is a collection of refereed papers presented at the Fifth Annual UMR-DNR Conference on Energy held at the University of Missouri--Rolla on the dates of October 10 - 12, 1978.

Guided by the President's goal of energy independence by 1980, the UMR-DNR Conference on Energy organized in 1974 with the purpose of providing social scientists, scientists and engineers a means for rapid communication of their most recent research results in the field of energy and to offer solutions to the energy related problems of local government, business, industry and the general public. Since that time, there has been …

The Relation Between Permeability And Pore Size Distribution Of Compacted Clayey Silts : Interim Report, Ignacio Garcia-Bengochea

JTRP Technical Reports

No abstract provided.

Maintenance Methods For Continuously Reinforced Concrete Pavements : Interim Report, Stanley Jay Virkler

JTRP Technical Reports

No abstract provided.

Traffic Speed Report No. 104 : Interim Report, James Robert Mekemson, George K. Stafford

JTRP Technical Reports

No abstract provided.

Mortar Mixtures For Thin, Skid Resistant Concrete Surfaces : Interim Report, Jorge Gomez-Dominguez

JTRP Technical Reports

No abstract provided.

The Development Of The Computerized Geotechnical Data Bank For The State Of Indiana : Interim Report, Gary Dana Goldberg

JTRP Technical Reports

No abstract provided.

Soil Compaction Specification Procedure For Desired Field Strength Response : Interim Report, John Thomas Price

JTRP Technical Reports

No abstract provided.