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Articles 185281 - 185310 of 193757

Full-Text Articles in Engineering

Test 1165: Case 2670 Diesel, Nebraska Tractor Test Lab Jan 1974

Test 1165: Case 2670 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Test 1167: Allis-Chalmers 7060 Diesel, Nebraska Tractor Test Lab Jan 1974

Test 1167: Allis-Chalmers 7060 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Test 1166: Allis-Chalmers 7040 Diesel, Nebraska Tractor Test Lab Jan 1974

Test 1166: Allis-Chalmers 7040 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


Test 1169: Steiger Tiger Ii Diesel (Also Steiger Panther Iii - St-320 Diesel), Nebraska Tractor Test Lab Jan 1974

Test 1169: Steiger Tiger Ii Diesel (Also Steiger Panther Iii - St-320 Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT

GENERAL CONDITIONS

East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers.

PREPARATION FOR PERFORMANCE RUNS

The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …


0103: William Ziebold Papers, 1915-1932, Marshall University Special Collections Jan 1974

0103: William Ziebold Papers, 1915-1932, Marshall University Special Collections

Guides to Manuscript Collections

Engineer from Charleston, West Virginia. Papers include examinations from the Ohio State University, a field book, and correspondence regarding a gas field in Canada.


A Predictive Model For Manpower Allocation In A Solid Waste System, Robert M. Anthony Jan 1974

A Predictive Model For Manpower Allocation In A Solid Waste System, Robert M. Anthony

Retrospective Theses and Dissertations

No abstract provided.


A Military Training System Perspective And Model For Training Program Management, Alvin J. Boudreaux Jan 1974

A Military Training System Perspective And Model For Training Program Management, Alvin J. Boudreaux

Retrospective Theses and Dissertations

A perspective of the Naval Education and Training System (NETS) is developed and utilized as a framework on which a simulation model of general training system activities is constructed. The simulation model, which is based on functional activities, emphasizes the interdependent consequences of decisions and actions created through management planning, analysis, and control of training programs. A simulation experiment was conducted using a test situation description (scenario) to reflect the impact of management decisions and actions on the resulting allocation of resources and timeliness of training program activities. Conclusions are drawn regarding the utility and implications of the system dynamics …


A Comparison Of N-Path And Digital Filters For Band Pass Applications, Stephen Cooperman Jan 1974

A Comparison Of N-Path And Digital Filters For Band Pass Applications, Stephen Cooperman

Retrospective Theses and Dissertations

The classic problem of achieving high Q, band pass, inductorless filters has been traditionally attacked by applying active RC networks. This approach suffers from the faults of poor economy, lack of stability of performance with time and temperature, and high network performance sensitivity to component changes. The problem is reviewed from the aspect of applying techniques other than operational amplifier RC filters. The techniques presented are those of N-Path (switching) and Digital Filters. The underlying theory of both methods is explored and a design example for each of the techniques is presented. These designs are then compared on the basis …


Electroplating, James G. Farrell Jan 1974

Electroplating, James G. Farrell

OTS Master's Level Projects & Papers

Electrometallurgical industries comprise an important segment of the world's manufacture of metal products. These industries involve three major categories: electrowinnowing, electrorefining and electroplating. Electrowinnowing consists of purifying raw ore to a relatively pure metal by electrolysis. Extraction of aluminum from bauxite is an example. Electrorefining involves electrolysis of metallic solutions to recover or produce extremely pure metal. Recovery of precious metals is often done by electrorefining. Electroplating involves the coating of one metal or object with another metal for various reasons. The chief reasons are the protection of a part from corrosion or its beautification. Another type of electroplating is …


A Gpss/360 Computer Model For Simulation Of Automobile Traffic At Road Intersections, Igor V. Golovcsenko Jan 1974

A Gpss/360 Computer Model For Simulation Of Automobile Traffic At Road Intersections, Igor V. Golovcsenko

Retrospective Theses and Dissertations

No abstract provided.


Development Of A Dme Simulator, Robert W. Brown Jan 1974

Development Of A Dme Simulator, Robert W. Brown

Retrospective Theses and Dissertations

This report summarizes the design of a DME (Distance Measuring Equipment) simulator to be used in the testing of an Area Navigation System. The purpose of the simulator is to generate a signal representing an aircraft's distance from a ground station. This information is in the form of two pulses whose separation represents that elapsed transmission time for an aircraft to receive a reply from the ground station to an interrogation by the aircraft. The pulse spacing must be selectable as fixed distances for static tests and as distance changing at a constant rate to simulate flying to or from …


A System Dynamics Model To Test Urban Transportation Policy Alternatives, John Paul Burtle Jan 1974

A System Dynamics Model To Test Urban Transportation Policy Alternatives, John Paul Burtle

Retrospective Theses and Dissertations

This study investigates the structure of urban transportation systems, the bases of commuter mode selection, and the effects of alternate transportation system management policies. The study was based on the hypothesis that changes in transportation system management policies are possible which will significantly increase the demand for public transportation in urban areas.


A Solid State Transducer For Monitoring Pipeline Cathodic Protection Voltages, Jon Robert Bartell Jan 1974

A Solid State Transducer For Monitoring Pipeline Cathodic Protection Voltages, Jon Robert Bartell

Retrospective Theses and Dissertations

No abstract provided.


Fugitive Particulate From Highway Construction, Kennard F. Kosky Jan 1974

Fugitive Particulate From Highway Construction, Kennard F. Kosky

Retrospective Theses and Dissertations

National ambient air quality standards for particulate matter have been promulgated since April, 1971. While effects of stationary sources on these standards have been examined, little research has been accomplished on the effects of fugitive particulate. This thesis examines the environmental impact of a fugitive dust source, Highway Construction. Using the High-Volume reference method for particulate sampling, the effect of Highway construction was determined. An analysis of concentrations, distance influences, meteorological influences, particle sizes and construction influences is presented. The data obtained from this study indicates the major influence of concentrations is a function of distance and sampling height. Particle …


Electromagnetic Fields In Water Treatment, Robert H. Fagan Jan 1974

Electromagnetic Fields In Water Treatment, Robert H. Fagan

Retrospective Theses and Dissertations

Properties and characteristics of colloidal systems are reviewed with a discussion of colloid systems to be found in natural and wastewaters. Current electric and magnetic field theory are reviewed and summarized to provide practical application of the theory to engineering problems in the environmental field. Literature of colloidal reactions to electrical and magnetic fields is discussed and reviewed to ascertain areas of potential application of electric and magnetic phenomena to natural and wastewater treatment systems having objectionable colloid suspensions. It is concluded that application of electrical fields (electrophoresis) does not currently hold much promise for practical applications in water treatment …


System Dynamic Studies In Epidemiology (Deterministic), William Edward Lewis Jan 1974

System Dynamic Studies In Epidemiology (Deterministic), William Edward Lewis

Retrospective Theses and Dissertations

No abstract provided.


Analysis Of Driver Reaction To Warning Devices At A High-Accident Rural Grade Crossing, Eugene Robert Russell Jan 1974

Analysis Of Driver Reaction To Warning Devices At A High-Accident Rural Grade Crossing, Eugene Robert Russell

JTRP Technical Reports

No abstract provided.


Dynamic Modeling With Discrete Management Decisions, Victor Jorge Sorondo Jan 1974

Dynamic Modeling With Discrete Management Decisions, Victor Jorge Sorondo

Retrospective Theses and Dissertations

No abstract provided.


Thermal Decomposition Of Boron Triiodide On Molybdenum Field Emitter Surfaces, Richard E. Moore, P. Darrell Ownby Jan 1974

Thermal Decomposition Of Boron Triiodide On Molybdenum Field Emitter Surfaces, Richard E. Moore, P. Darrell Ownby

Materials Science and Engineering Faculty Research & Creative Works

Boron has been adsorbed onto molybdenum field emitter surfaces by the thermal decomposition of boron triiodide at corrected partial pressures of 1.4 x 10-9 Torr to 4.5 x 10-9 Torr. Based on field emission work function data and an analytical work function versus adsorbate-coverage relationship, a quantitative measure of the monolayer coverage of boron on molybdenum has been determined; this value is 6.3 x 1014 atoms/cm2/monolayer. A parameter, β, is defined which is a measure of the effective yield of adsorbed boron on molyb-denum from BI3. β is formulated in terms of the free energy of dissociation of the BI3 …


The Effects Of Variations In The Excitation Parameters Of Blast Waves On The High Frequency Response Of Circular Rings, Paul John Mirabella Jan 1974

The Effects Of Variations In The Excitation Parameters Of Blast Waves On The High Frequency Response Of Circular Rings, Paul John Mirabella

Retrospective Theses and Dissertations

The high frequency response of a circular ring of rectangular cross section interior to a conical shell excited by a blast wave is examined. The ring supports a rigidly attached mass during excitation. It is hypothesized that the response is a function of the four excitation parameters which characterize the loading. These are: peak reflected pressure; characteristic time (pulse duration); wave engulfment time; and circumferential distribution. These parameters are varied over a range of interest in an effort to ascertain the structural sensitivity to such perturbations. A series of tests sponsored by the Department of the Army and the Martin …


Osha's Impact On Industry, Paul Christ Noller Jan 1974

Osha's Impact On Industry, Paul Christ Noller

Retrospective Theses and Dissertations

On December 29, 1970, the President signed into law the Williams-Steiger Occupational Safety and Health Act (OSHA) of 1970, which became effective April 28, 1971. The purpose of this act is to assure safe and healthful working conditions for the nation's wage earners. The law provides that each employer has the basic duty to furnish his employees a place of employment which is safe from recognized hazards that cause death or serious physical harm. The implementation of the OSHA Act has been the most extensive intervention into the day-to-day operation of American Industry in history. Originally, employers expressed doubt that …


An Application Of Hamilton's Principle To Diffraction Of Light By Ultrasound, Daniel F. Waterhouse Jan 1974

An Application Of Hamilton's Principle To Diffraction Of Light By Ultrasound, Daniel F. Waterhouse

Retrospective Theses and Dissertations

A covariant form of Hamilton's Principle of Stationary Action is formulated and used to solve the general eiconal equation describing the wave function of light in a medium carrying ultrasound. Tensor notation is reviewed and the tensor form of Maxwell's equations is developed. Boundary equation that the field quantities must satisfy in order for the variation of Hamilton's action integral to be stationary are determined and used to form the generalized eiconal equation of geometrical optics. The rays are introduced and through a canonical transformation the eiconal for the diffracted medium is solved and plotted.


A Simulation Study Of Guest Procedures In A Resort Hotel Complex, Bradley Barraclough Jan 1974

A Simulation Study Of Guest Procedures In A Resort Hotel Complex, Bradley Barraclough

Retrospective Theses and Dissertations

At this time there is an increasing emphasis in Florida on developing large, multipurpose complexes which include shopping, entertainment, and accommodations for tourists. In all cases a major design problem is people transportation. For best efficiency the primary mode of transportation, the car, must be exchanged for other people movers within the complex, which will afford more security, flexibility, and better movement of people to their ultimate destination. Economically speaking, this would not only conserve fuel, but would allow consolidation of automobile parking into a less desirable area and the grouping of facilities for more shopping and recreation convenience. An …


Reduced Third Order Intermodulation Distortion Utilizing A Push-Pull Class C Vhf Transistorized Amplifier, Norman B. Mosher Jan 1974

Reduced Third Order Intermodulation Distortion Utilizing A Push-Pull Class C Vhf Transistorized Amplifier, Norman B. Mosher

Retrospective Theses and Dissertations

In a transistorized push-pull amplifier, third order intermodulation distortion was effectively reduced at VHF frequencies with an output power of two watt. The non-linear distortion of the amplifier is modeled using a power series. The resulting expression is used as the basis for choosing the push-pull configuration to reduce the third order intermodulation distortion. The amplifier was built and tested, and the experimental results compare favorably with the theoretical results. The level of the third order intermodulation distortion is found to be at least 30 dB below the interfering signal level.


A Special Purpose Modem Design, William Lester Schulte Jan 1974

A Special Purpose Modem Design, William Lester Schulte

Retrospective Theses and Dissertations

A special purpose modem has been designed to fill the interface requirements peculiar to RCA's DatawayTmk hotel/motel data management system. The modem interface operates on dedicated telephone quality wiring over distances up to 4000 feet using frequency shift keying. A data rate of 2880 bits per second is achieved through the interface. This report discussed the requirements of the interface and details the worst case design of the modem transmitter and receiver sections. The approach used relies heavily upon the use of digital logic circuitry in the modulation and demodulation of the FSK signals.


Evaluative Study Of A Proposed Municipal Pyrolysis Installation, Leon Breckenridge Jan 1974

Evaluative Study Of A Proposed Municipal Pyrolysis Installation, Leon Breckenridge

All Master's Theses

This paper discusses an alternative to sanitary landfills as a method of disposing of municipal solid waste. The alternative means is a pyrolysis-gasification process for the disposal of solid wastes and the production of energy in the form of a gas of relatively low energy content.

Characteristics of typical municipal solid wastes are discussed. A discussion of the pyrolysis process is included along with other pertinent technical information. A method for utilization of the energy produced from pyrolysis is presented.


The Effects Of Washout In Polydispersed Metalic Aerosols, Jerry N. Burford Jan 1974

The Effects Of Washout In Polydispersed Metalic Aerosols, Jerry N. Burford

Masters Theses

"Experimental Collection Efficiencies are presented for drops of approximately 0.1cm radius falling through aluminium, magnesium and molybdenum oxide polydispersed aerosols. The experimentation was conducted in two identical cylindrical chambers, one being used for aerosol washout, and the other for allowing the aerosol to decay normally. The Collection Efficiency data were thus determined by comparing the aerosol concentration changes in the two chambers. The rather strong effects that induced micro-turbulence and relative humidity have on aerosol collection and aerosol decay were observed and are discussed"--Abstract, page ii.


Data Acquisition And Analysis System For Computer Modal Analysis Of Automotive Exhaust Emissions., Edward Leroy Mabie Jr. Jan 1974

Data Acquisition And Analysis System For Computer Modal Analysis Of Automotive Exhaust Emissions., Edward Leroy Mabie Jr.

Masters Theses

"A data acquisition and reduction method for modal analysis of undiluted automotive exhaust emissions is presented. 'The procedure on which this method is based ·wa.s developed and presented in a. paper by Donald L. Stivender, in 1971, entitled, "Development of a Fuel-Based Emission Measurement Procedure." This method is presented as a. viable a.1ternative to the diluted constant volume sample by bag collection technique specified in the federal test procedure for emissions from light duty vehicles.

The instrumentation used for the acquisition of data was the type normally used for automotive emission studies. The four instruments used for exhaust gas analysis …


Effect Of Sweeping Sinusoidal Excitation On Nonlinear Dynamic Systems., Md. Mosharraf Hossain Jan 1974

Effect Of Sweeping Sinusoidal Excitation On Nonlinear Dynamic Systems., Md. Mosharraf Hossain

Masters Theses

"The response of viscous damped, cubic spring systems to excitations having exponentially varying frequency cannot be written in a closed form. This report summarizes a numerical investigation of hardening and softening cubic systems influenced by these excitations and provides information concerning the effects of varying viscous damping, system nonlinearity, and excitation sweep rate on system behavior near resonance. Results are reported in terms of maximum response attained during sweeping and the frequency at which maximum response occurs.

It has been found that if hardening cubic systems are subjected to sweeping excitations wherein the frequency sweeps down through resonance, the maximum …


The Geology And Hydrogeology Of The New Lead Belt, Missouri, Charles Scott Fletcher Jan 1974

The Geology And Hydrogeology Of The New Lead Belt, Missouri, Charles Scott Fletcher

Masters Theses

"In order to analyze the effects of pumping groundwater from underground lead mines upon present groundwater resources of the New Lead Belt area, the geology and hydrogeology of that area must first be determined. The primary method of investigation of this analysis was interpretation of ecologic and hydrogeologic data taken from water well logs and mineral exploration well logs, with supplemental information supplied by published and unpublished literature sources. From all these sources of data, structural contour maps of the Precambrian erosional surface; the tops of the Lamotte, Bonneterre, and Davis Formations; isopachous maps of the Davis and the Lamotte/Bonneterre …