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Articles 188161 - 188190 of 196671

Full-Text Articles in Engineering

Future United States Energy Demand Patterns, Leland Blank, Richard Riley Jan 1974

Future United States Energy Demand Patterns, Leland Blank, Richard Riley

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

The future energy demands of the United States are forecast using a unique approach. The saturation forecasting method reflects the inability of an individual to utilize more than a limited amount of energy. This technique also allows evaluation of various conservation methods and their effects on the future energy needs.


Radiation Testing Under Simulated Loca Conditions, Kenneth G. Mayhan, D. R. Edwards, W. F. Oberbeck, J. F. Montle Jan 1974

Radiation Testing Under Simulated Loca Conditions, Kenneth G. Mayhan, D. R. Edwards, W. F. Oberbeck, J. F. Montle

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

The purpose of this evaluation is to gather data to determine whether or not radiation during a simulated Loss of Coolant Accident would have any effect upon the coatings being used. Because of the concern in industry regarding the safety of nuclear power generating stations and the strong actions of the various environmentalist clubs and agencies clubs and agencies, the utilities have been required to prove the safety of the power facilities to extraordinary degrees before licensing can be obtained to operate. One of the areas regarding the safety is the necessity of proving that the coatings will remain intact …


Ole Miss Engineer 1974 Jan 1974

Ole Miss Engineer 1974

Ole Miss Engineer

No abstract provided.


Ua66/1/2 Scrapbook, Wku Ogden College Of Science & Engineering Jan 1974

Ua66/1/2 Scrapbook, Wku Ogden College Of Science & Engineering

WKU Administration Documents

Scrapbook of clippings, press releases, photographs and other items related to the history of Ogden College of Science & Technology from 1961 to 1974.


Reliability Analysis Of The University Of Missouri--Rolla Reactor, Jimmy Dale Schottel Jan 1974

Reliability Analysis Of The University Of Missouri--Rolla Reactor, Jimmy Dale Schottel

Masters Theses

"The reliability of Nuclear Installations is becoming an important area of research. In this report an approach to reliability analysis was made. The actual failure data was utilized to predict theoretical failure distributions. These distributions were then used to determine future reliability of components, subsystems and system"--Abstract, p. ii


Noise Power Estimation Based On Data Of Finite Sample Size., John Michael Koly Jan 1974

Noise Power Estimation Based On Data Of Finite Sample Size., John Michael Koly

Masters Theses

"The method of z-transforms is used to derive the error performance of an average noise power estimator that utilizes data of finite sample size. Rectangular and trapezoidal integrators are employed by the estimator. Theoretical performance of each integrator is derived as a function of the number of samples utilized to form the estimate"-- Abstract, p. ii


Design Of An Auxiliary Indicator For A Fighter Aircraft., Jack L. Kubicek Jan 1974

Design Of An Auxiliary Indicator For A Fighter Aircraft., Jack L. Kubicek

Masters Theses

"The auxiliary indicator discussed in this thesis is the unit which processes signal information for a radar display indicator. The indicator provides system information to a fighter pilot in an easy to read and uncluttered manner.

The indicator displays symbols, target and advisory information for the pilot. The symbols and target information are displayed on a direct view storage tube (DVST), while pilot advisory information is displayed by means of indicator lights located around the perimeter of the display.

This thesis describes the original steps of development, starting with the original consideration of the problem and possible methods for solving …


A Dynamic Simulation Of The Gasoline Distribution System During Periods Of Normal And Restricted Availability, Sheriar R. Bamasi Jan 1974

A Dynamic Simulation Of The Gasoline Distribution System During Periods Of Normal And Restricted Availability, Sheriar R. Bamasi

Retrospective Theses and Dissertations

No abstract provided.


A High Speed Pulse Code Laser Diode Modulator, John Lawrence Mcdonough Jan 1974

A High Speed Pulse Code Laser Diode Modulator, John Lawrence Mcdonough

Retrospective Theses and Dissertations

This research report reviews the basics of pulse code modulation (PCM) techniques and includes a special encoder design for a system which uses a laser diode output for the transmitted pulse. The text discusses PCM and its features, PCM formats, synchronization, and various accepted PCM codes. The encode circuit design is complete with a description of the circuit, circuit components, and operation. Included are the necessary diagrams, figures, specifications, and parts list. The transmitted output of the design circuit has a repetition rate of one megabit per second.


A Binary Power Generation And Salt Water Distillation Cycle, Edward H. Hardison Jan 1974

A Binary Power Generation And Salt Water Distillation Cycle, Edward H. Hardison

Retrospective Theses and Dissertations

This research report discusses a binary power generation and salt water distillation cycle that was the subject of a feasibility study at Florida Technological University. The thermodynamic equations are derived and the results of a parametric study to determine optimum fluid properties is presented. This cycle produces power at efficiencies significantly higher than that of conventional cycles and at the same time produces a significant amount of fresh water. The efficiency is maintained even at the high turbine outlet temperature necessary to produce fresh water. The important quantities in considering they cycle efficiency and the fresh water production are the …


Operation And Calibration Procedures For A Small Four-Component Strain Gage Balance, Gary Allen Rasponi Jan 1974

Operation And Calibration Procedures For A Small Four-Component Strain Gage Balance, Gary Allen Rasponi

Retrospective Theses and Dissertations

The Florida Technological University four-component strain-gage balance is an internally mounted, half-inch diameter balance capable of measuring four components of load: front and rear normal force, axial force, and rolling moment. Measurement of these components is accomplished by means of sixteen strain gages that are mounted on the balance and wired into four full bridge circuits. When the balance is subjected to a load, the strain gages, through a small resistance change, indicated the strain a balance element is undergoing. This report presents a description of the balance and its support equipment, and outlines specific calibration procedures necessary to their …


A Design Report On A Servo Controlled Inertial Sensor Test Fixture, James B. Dowdle Jan 1974

A Design Report On A Servo Controlled Inertial Sensor Test Fixture, James B. Dowdle

Retrospective Theses and Dissertations

This report discusses the design of a servo controlled positioning system for remote control positioning of inertial sensors while under high acceleration test in a centrifuge. A rotating fixture and an electronic control panel was built for this purpose, with two modes of operation. The fixture can be positioned with an accuracy of 0.05 degrees and a resolution of 0.01 degrees, or it can be maintained in a constant velocity mode at rates from 1 to 16 degrees per second. The velocity loop was implemented as a phase locked loop, and the command rate is entered as a frequency - …


Intermodulation Analysis Of Class C Transistorized Amplifiers With Applications To V.H.F. Amplifiers, Robert Hopkins Wollam Jan 1974

Intermodulation Analysis Of Class C Transistorized Amplifiers With Applications To V.H.F. Amplifiers, Robert Hopkins Wollam

Retrospective Theses and Dissertations

The paper discusses the theoretical analysis and the experimental work done to describe the cause of intermodulation distortion in class C transistorized amplifiers. A mathematical basis for the intermodulation was derived using a single frequency input and a second frequency introduced into the output of the amplifier. It was followed by experimental work performed to justify the theory. These experiments used both pulsed and sinusoidal drives as amplifier inputs. Also, a feedback method along with the transistor's operating point was shown to reduce the intermodulation distortion produced by the amplifier. Finally, a short discussion on the results and some of …


A Proximity Vehicle Locator System, Bradley Everett Thompson Jan 1974

A Proximity Vehicle Locator System, Bradley Everett Thompson

Retrospective Theses and Dissertations

The purpose of this paper is to discuss the design, construction and operation of the proximity vehicle locator system prototype developed for the Orlando Police Department. The objective of the project itself was to provide the O.P.D. with a simple but effective system by which constant surveillance of patrol car locations could be maintained, thus improving the department's operational efficiency. Each unit designed specifically for use in this project will be discussed in some detail, while those purchased locally for use in the project will be only briefly described, as pertaining to their functional importance to the system. In addition, …


Design Considerations For Extended Aeration-Denitrification Facilities, Frank Paul Huttner Jan 1974

Design Considerations For Extended Aeration-Denitrification Facilities, Frank Paul Huttner

Retrospective Theses and Dissertations

Design considerations and operating procedures were investigated for nitrogen removal in an extended aeration-denitrification facility. Both past and present removal efficiencies were evaluated for the facility, along with capital and operating cost data. The findings of this research indicate that at very long detention times, significant nitrification and denitrification occurred in the plant without the use of chemicals. Overall nitrogen, BOD5, and suspended solids removals were extremely high. The significance of this research is that future plants may achieve high rates of nitrogen removal through innovative design and operating procedures without the use of costly chemicals. However, capital costs needed …


Design Of The Ultralight Two Place Gyroplane, Martin. Hollmann Jan 1974

Design Of The Ultralight Two Place Gyroplane, Martin. Hollmann

Retrospective Theses and Dissertations

No abstract provided.


Development Of A Remote Sound Monitoring System, Joseph Owen Ellis Jan 1974

Development Of A Remote Sound Monitoring System, Joseph Owen Ellis

Retrospective Theses and Dissertations

This report explains the development of a sound measuring system for continuous monitoring of sound levels. Dedicated telephone lines are used for data transmission so that sound level data can be monitored at installations far from the area of concern. This allows the sound sensing equipment to be left unattended and thereby greatly reduces the manpower costs of operation. That predetermined data conditions can be detected when they occur and corrective action can be taken immediately at the data receiving installation further justifies the method used. Background information and general need for such a system are discussed. Growing public concern …


Aging Characteristics Of Aluminum-Silver Alloys, Paul Leray Reynolds Jan 1974

Aging Characteristics Of Aluminum-Silver Alloys, Paul Leray Reynolds

Retrospective Theses and Dissertations

The effect of single-step and two-step aging treatments on the tensile properties of an Al-6 wt. % Ag alloy and an Al-14 wt. % Ag alloy has been investigated. Results show that the tensile properties of these alloys were approximately the same whether they were given single or two-step aging treatments. Reversion treatments applied to the fully age-hardened Al-14 % Ag alloy after 15 minutes at various temperatures between 200 and 350 °C showed two maxima in the ultimate tensile strength and the yield strength. It is believed that this result was caused by two transformation processes occurring simultaneously: i.e., …


Application Of Computer War Gaming In The Evaluation Of Missile Performance Requirements For Air To Air Engagements, Joy F. Berman Jan 1974

Application Of Computer War Gaming In The Evaluation Of Missile Performance Requirements For Air To Air Engagements, Joy F. Berman

Retrospective Theses and Dissertations

No abstract provided.


Image Analysis And Improvement Of A Point Light Source Visual Flight Simulator, Steve K. Butrimas Jan 1974

Image Analysis And Improvement Of A Point Light Source Visual Flight Simulator, Steve K. Butrimas

Retrospective Theses and Dissertations

It has long been desired to simulate a non-preprogrammed controllable visual scene of the real world in a limited area for the purpose of training, in particular for aviation training. There presently exists a point light source projection system designed to accomplish this, however due to physical limitations, the display image, as compared to the corresponding real world scene which is being simulated, is somewhat distorted and limited. This point light source system is analyzed to determine the distortions and deviations from reality and methods are proposed to improve the display by minimizing the distortions and deviations.


An Analysis Of The Feasibility Of An Automatic Vehicle Locator System For The Orlando Police Department, Larry L. Lester Jan 1974

An Analysis Of The Feasibility Of An Automatic Vehicle Locator System For The Orlando Police Department, Larry L. Lester

Retrospective Theses and Dissertations

No abstract provided.


Steady State Oscillations In Switching Regulated Dc To Dc Power Supplies, Jayant Gajanan Vaidya Jan 1974

Steady State Oscillations In Switching Regulated Dc To Dc Power Supplies, Jayant Gajanan Vaidya

Retrospective Theses and Dissertations

No abstract provided.


The Effect Of Contact Angle, Surface Roughness, And Adsorption Of Heterogeneous Nucleation Of Condensing Water, Prafulla Chandra Mahata Jan 1974

The Effect Of Contact Angle, Surface Roughness, And Adsorption Of Heterogeneous Nucleation Of Condensing Water, Prafulla Chandra Mahata

Doctoral Dissertations

"Condensation of water vapor on various surfaces was studied experimentally. It was found that supersaturations as high as 25% were required to initiate condensation on hydrophobic surfaces. The supersaturation data agreed qualitatively with the Volmer theory of heterogeneous nucleation. The influence of adsorption of water vapor was found to be small. Surface roughness caused a little reduction in the critical supersaturation"--Abstract, page iii.


Process Optimization By Flow Sheet Simulation, Larry Dale Gaines Jan 1974

Process Optimization By Flow Sheet Simulation, Larry Dale Gaines

Doctoral Dissertations

"PROPS, (Process Optimization System), has been used to simulate and optimize the Universal Oil Products solid phosphoric acid catalyst process for producing gasoline. PROPS, a modified version of CHESS (Chemical Engineering Simulation System), performs a complete design and economic evaluation of the process for each set of independent variables. The computational time during optimization was reduced by the use of a regression equation to determine K-values as a function of temperature and pressure. K-value data used for the regression was generated from the Chao-Seader correlation using mixtures of the gasoline components to be encountered during optimization. The regression equation produces …


Measurements Of Condensation Coefficient Exhibited By Water Drops Grown On Rural Cloud Nuclei, Abbas M. Sinnarwalla Jan 1974

Measurements Of Condensation Coefficient Exhibited By Water Drops Grown On Rural Cloud Nuclei, Abbas M. Sinnarwalla

Doctoral Dissertations

"Values of condensation coefficient, ß, were experimentally determined for water drops grown on cloud nuclei in atmospheric air samples. The measured quantities were supersaturation, final drop size (6 to 7.5 µm radius), and time to grow from near dry radius to final radius. The drops were grown in a vertical-flow thermal diffusion chamber, at supersaturations near 0.5 and 1.0%. The final drop sizes were large enough so that ß did not depend upon the size of the nucleus producing a given drop. The average value of ß was 0.025 with a standard deviation of about 0.01"--Abstract, page 2.


Rc-Gyrator Ladder And Rlc Symmetrical Lattice Network Synthesis - A State-Space Approach, Tien Hua Jan 1974

Rc-Gyrator Ladder And Rlc Symmetrical Lattice Network Synthesis - A State-Space Approach, Tien Hua

Doctoral Dissertations

"This dissertation presents two network realization procedures using the state-space approach. The first procedure is the realization of a transfer function. A state model (A,B,C,D) is obtained from the given transfer function by inspection, where A is a companion matrix. Through a similarity transformation T, another state model (F,G,H,J) is obtained, where F is a tridiagonal matrix and can be realized by a RC-gyrator ladder network. The input source is inserted in the proper position of the ladder network, and the output is obtained through a summing circuit. It is a unified procedure and uses simple algebraic computation. A general …


Anionic Polymerization Of A Series Of Cyclocarbosiloxanes, William W. Knickmeyer Jan 1974

Anionic Polymerization Of A Series Of Cyclocarbosiloxanes, William W. Knickmeyer

Doctoral Dissertations

"A study has been made on the anionic polymerization of a series of cyclocarbosiloxanes of the type: [IMAGE] where n was varied from 2 to 8. The polymerization reaction in benzene, was initiated using cesium trihexyl silanolate, a unique organic soluble liquid catalysts. Benzene served as both a solvent and to shift the position of the NMR SiCH3 polymer peak away from the monomer peak making it feasible to follow the kinetics on a Varian EM-360 Nuclear Magnetic Resonance Spectrometer. Hexamethylphosphoramide (HMPA) was used as a promoter to solvate the initiator ions and thus increasing the polymerization rate. It …


The Morphology Of Cellular Precipitation In Magnesium Rich Magnesium-Aluminum Alloys, Jyong Shi Cho Jan 1974

The Morphology Of Cellular Precipitation In Magnesium Rich Magnesium-Aluminum Alloys, Jyong Shi Cho

Doctoral Dissertations

"The morphology of cellular precipitation in a Mg-9wt. %AI alloy has been investigated by light and electron microscopy. A study of the early stages of the cellular precipitation process indicated that cellular precipitate structure forms in Mg-Al alloys by Fournelle and Clark mechanism. "Replacive" motion indicative of the Tu and Turnbull mechanism for cellular precipitation was not seen"--Abstract, page 1.


Evaluating The Membrane Fecal Coliform Test By Using Escherichia Coli As The Indicator Organism, James B. Hufham Jan 1974

Evaluating The Membrane Fecal Coliform Test By Using Escherichia Coli As The Indicator Organism, James B. Hufham

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The fecal coliform membrane filter method (MFC) currently used in water pollution analysis was evaluated by using two strains of E. coli, a known fecal coliform, as th indicator organism. A large relative error in the results obtained with this method was found to be dependent upon the brand of membrane filter employed, the medium, and the temperature of incubation. MFC densities varied between 10 and 60% of the densities determined by means of total bacteria counts and total coliform counts performed at 35°C. Due to the large relative error encountered, the MFC method cannot be recommended as an analytical …


Bulletin No 3887 - Cattle Yard Construction, Western Australian Department Of Agriculture Jan 1974

Bulletin No 3887 - Cattle Yard Construction, Western Australian Department Of Agriculture

Bulletins - 3000 - 3999

Good cattle yards allow animals to be handled quietly, safely and efficiently. If yards are well designed, animal uneasiness is minimised and so, too, are frayed tempers.

This bulletin outlines general points of cattle yard design and construction. There are many and varied cattle yard designs in use—many good ones and some bad ones. This bulletin should help in avoiding the bad ones.