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A Study Of Thin-Film Superconducting Junctions, William P. Korink

Electrical & Computer Engineering Theses & Dissertations

The information presented in this paper is the result of research conducted toward the development. of a reproducible thin-film superconducting junction. The results of this experimentation and the equipment and procedures used are provided.

A qualitative explanation is given for the theory used in the derivation of the volt-ampere characteristics of thin-film superconducting junctions of metal-insulator- metal construction. This explanation entails the electron flow through the insulating layer through the use of the Fermi-Dirac and density of states functions.

The theoretical investigation is based on the BCS Theory and results in volt-ampere characteristics that agree very well with published experimental …

The Irish Plumbing And Heating Engineer, March 1969 (Complete Issue)

Building Services Engineering

No abstract provided.

Fm 30-16, Technical Intelligence, 28 February 1969., Robert Bolin , Depositor

United States Department of Defense Military Intelligence

This manual defines technical intelligence and explains the technical intelligence process. It briefly discusses the top level Army technical intelligence production organizations, which at that time were Foreign Science and Technology Center, the Missile Intelligence Directorate of the US Army Missile Command, and the Medical Intelligence Office of the Office of the Surgeon General of the Army.

It explains the technical intelligence activities and planning in US Forces in the field.

Considerable attention is given to explaining the proper procedures for recovery and evacuation of foreign equipment and documents.

The appendices contain an extensive list of references, the categories of …

A Simple Observational Technique For The Investigation Of Boundary Layer Stability And Turbulence, Tony Maxworthy

Symposia on Turbulence in Liquids

A dense suspension of aluminum flakes in a fluid has many advantages as a flow-visualization method, and has been used to study circular Couette flow and Benard instability, among others. In the present contribution the scientific and pedagogical merits of the technique are examined further for three different cases: (a) Stability of Poiseuille flow; (b) Stability of the side-wall boundary layers created when a fluid-filLed, rotating container is suddenly brought to rest; (b) Stability of the boundary layer beneath a concentrated vortex.

The technique is also useful in other cases, especially when fundamentals of fluid flow are to be demonstrated …

Investigation Of Target Detection In Noncoherent Systems With Colored Noise, Edward Windsor Bailey

Masters Theses

"Design efforts concerning the problem of detecting moving ground targets from an airborne platform with a noncoherent radar have been concentrated in the area of video filter design. The filter formulation generally follows an empirical path with no generally acceptable criterion for an optimum processor. This Thesis considers several problem formulations which are based on a Neyman-Pearson detection criteria. A square-law second detector is assumed and the resulting likelihood ratio shown to be too complex for closed form solution. The problem is reformulated in terms of sequences using complex random variable representations and the likelihood ratio is investigated. A test …

Detection Of Slowly Fading Targets With Frequency Agility, Kenneth L. Horn, Norval D. Wallace

Electrical and Computer Engineering Faculty Research & Creative Works

Detection probabilities for a noncoherent pulsed radar are presented as a function of maximum possible pulse-to-pulse frequency change (transmitter bandwidth) and target depth for frequency agility applied to Swerling's case I target. The transmitted frequency is a uniformly distributed random variable. Copyright © 1969 by The Institute of Electrical and Electronics Engineers, Inc.

The Application Of Time-Lapse Photography In Work Simplification Studies Of Construction Operations, Jimmy Alan Jacobson

JTRP Technical Reports

No abstract provided.

Film Boiling Heat Transfer From An Oscillating Sphere, L. G. Rhea, R. G. Nevins

Mechanical and Aerospace Engineering Faculty Research & Creative Works

An experimental investigation has been undertaken to determine the effect of oscillation of the heat transfer surface on turbulent film boiling heat transfer. A transient technique was used to calculate the heat flux from copper spheres of 1 in., 3/4 in., and 1/2 in. dia. In all tests, saturated liquid nitrogen at atmospheric pressure was used as the boiling fluid. The data obtained were found to be in good agreement with published theory at zero frequency. The range of frequencies studied was from zero to approximately 12 cps at peak-to-peak amplitudes of 2 in. and 1 in., i.e., at amplitude-to-diameter …

The Gcars System Fortran Iv Users Manual, Part 2, A. Keith Turner

JTRP Technical Reports

No abstract provided.

An Investigation Of The Application Of Photoelastic Coatings To Soil Studies, James Kenneth Meisenheimer

Masters Theses

"The purpose of this investigation was to determine if photoelastic coatings could be adapted to soil systems and used as a workable tool for analyzing deformation and stress distribution. The required physical properties of a photoelastic coating on soil is discussed and a number of photoelastic materials are investigated as possible soil coatings. Mixing procedures, coating application techniques, curing methods, testing procedures, and results are discussed for gelatin and several plastics. Compacted soil samples and extruded soil samples from a Vac-Aire extrusion device were coated with reflective and photoelastic coatings and then loaded in an unconfined compression machine. The stress …

No-Passing Zones: Criteria, Legislation And Location, Valkenburg Gerald Van

JTRP Technical Reports

No abstract provided.

Major Aspects Of The Urban Transportation Planning Process : Interim-Summary Report, William Louise Grecco

JTRP Technical Reports

No abstract provided.

The Gcars Ii System : Technical Paper, A. Keith Turner

JTRP Technical Reports

No abstract provided.

Evaluation Of The Performance Of Ultrasonic Equipment For Pavement Thickness Measurements, Charles F. Scholer, Raymond Doran Pavlovich

JTRP Technical Reports

No abstract provided.

Plan Design Model For Urban Area Use Allocations : Draft Copy, W. Don Stewart, William Louise Grecco

JTRP Technical Reports

No abstract provided.

The Irish Plumbing And Heating Engineer, January 1969 (Complete Issue)

Building Services Engineering

No abstract provided.

Spherical Antenna Array, Narong Yoothanom

Doctoral Dissertations

"The far field radiation pattern of an isotropic spherical antenna array with two types of element distributions, a latitude-longitude distribution and an approximately equally-spaced distribution, has been analyzed using Poisson's Sum Formula. Beamwidth expressions of both element distributions are found in various planes. All numerical results are given only for the case of 21 rings"--Abstract, page ii.

Usu Telemetering Precipitation Gage Network, C. Earl Israelsen, Don L. Griffin

Reports

A network of telemetering precipitation gages is operating in the mountainous areas of northern Utah, western Wyoming, and southern Idaho as part of the Wasatch Weather Modification Project. Approximately 40 individual gages collected and reported data during the 1968-69 winter season from distances up to 130 miles. In addition to the remotely located gages, the system includes an Automatic Readout Console (ARC) at the Utah Water Research Laboratory that is connected by a cable to a translator on top of Mt. Logan. The ARC is the control center for the network, interrogating in a predetermined programmed sequence the remote telemetry …

Supplemental Final Report Wasatch Weather Modification Project, Utah Water Research Laboratory

Reports

No abstract provided.

Evaluation Of The Adequacy Of Streamflow Operational Hydrology, Roland W. Jeppson, Calvin G. Clyde

Reports

No abstract provided.

State Organizational Patterns For Comprehensive Planning Of Water Resources Development, Daniel H. Hoggan

Reports

No abstract provided.

Diffusion Of Iron And Cobalt In Nickel Single Crystals, Charles Frederick Heuer

Doctoral Dissertations

"Diffusion coefficients of iron-59 in nickel have been determined in the temperature range 815°C to 1200°C. The temperature dependence can be represented by an Arrhenius type relationship,...The effect of the isotopic mass on the diffusion coefficient of cobalt in nickel has also been investigated. The isotope effect parameter, E, was found to vary from .26 to .84 over the temperature range 970.5°C to 1200°C. Both results are consistent with the single vacancy mechanism of diffusion. No evidence of divacancy contributions to the mass transport has been found"--Abstract, Page i.

Signal Distortion In A Regenerative Frequency Divider, Carl Ray Ryan

Doctoral Dissertations

"A regenerative frequency divider can be constructed with one integrated circuit and a single-pole tuned circuit. The divider can be used as a means for reducing the modulation index of either deterministic or random signals. This reduction in modulation index can simplify many signal processing schemes. This technique can be used up to S-band frequencies. The mathematical model of the regenerative frequency divider corresponds very closely to that of a first order Phase Locked Loop (PLL). The loop gain is determined in part by the nonlinear element used in the feedback loop. The loop gain is also proportional to the …

Internal Friction Of Phase Separated Glasses, Scot Walter Taylor

Masters Theses

"The large internal friction peak observed in a 10Li₂O·10Na₂O·80SiO₂ glass was studied as a function of the degree of phase separation. Transmission electron microscopy was used to evaluate the type and degree of phase separation. No observable changes in the temperature position or height of the internal friction peak were observed at successive stages of phase separation. Phase separation of a mixed alkali borosilicate glass also produced no changes in the internal friction peaks. Phase separation is not considered responsible for the large internal friction peak observed in mixed alkali glasses"--Abstract, page ii.

The Influence Of Several Factors On The Rate Of Secondary Compression Of Soil, William Joel Green

Masters Theses

"This research program has been undertaken to study the influence of load increment ratio, temperature, and sample thickness on Cα (rate of secondary consolidation) for a high organic content and low organic content soil. Consolidation equipment was designed to produce constant temperatures both above and below ambient, and to accommodate both 3/4 and 1 1/2 inch thick samples. Samples were molded into oedometer rings at the liquid limit. It was found that Cα was independent of the sample thickness and load increment ratio for both the high organic and low organic soils. The influence of temperature on Cα was found …

Telecommunications System Design Considerations For Advanced Logistic Spacecraft, James Myron Romberg

Masters Theses

"The telecommunications system design goals and functional requirements for an advanced logistic spacecraft are presented qualitatively. Advanced equipment and techniques that meet these system requirements and goals, that are within the state-of-the-art and that are believed to be economically feasible, are enumerated and described. System emphasis is on unification to minimize RF links and antenna subsystems, and on use of functional redundancy to assure satisfactory performance of critical telecommunication functions. The interaction of the telecommunications system design and the spacecraft mechanical, environmental, electrical, and operational interfaces are described in qualitative and quantitative terms. A practical spectrum of system interface characteristics …

Numerical Simulation Of One-Dimensional Three-Phase Fluid Flow In A Stratified Petroleum Reservoir With No Cross-Flow, Ali Mohammed Akbar

Masters Theses

"A numerical model for linear, three-phase fluid flow in a stratified petroleum reservoir has been developed for the purpose of studying water-flooding performance characteristics. Gravity forces, capillary pressure and cross-flow were neglected, but the fluids were considered compressible and evaluations of dissolved gas concentrations have been accounted for. The model was used in evaluating the performance of a water flood project for a hypothetical reservoir which contained the three phases of oil, gas, and water. The results were then compared with those obtained using the Dykstra-Parsons technique. The model produces results which were found to be similar to those obtained …

A Continuous Method For Determination Of The Evaporation Rate Of Zinc, Paul Alan O'Neill

Masters Theses

"A method for determination of the evaporation rate of zinc using a continuous recording balance has been devised. Tests were carried out under an inert gas over the range 600°C to 750°C with a total pressure of 1 atmosphere. It was found that the rate of evaporation doubled with an increase of 50°C in this range. Scanning electron microscope photographs show the crystalline nature of the condensate and the presence of a thin oxide layer on some solidified test samples. This oxide layer reduced the rate of evaporation by retarding the zinc vapor escape from the evaporating surface"--Abstract, Page iii.

An Investigation Of Transient Negative Resistance In A Cadmium Sulfide Device, John Irvin Giem

Masters Theses

"An analysis has been made of a CdS device which exhibits a transient negative resistance at room temperature and low field strengths whereas previously reported cases of negative resistance in CdS were observed at low temperatures and moderate to high electric fields. The CdS bar was illuminated on one end in the vicinity of an ohmic In contact. Contact was made to the other end of the device with a rectifying Ag contact and the device was reverse biased. Experimental evidence and the analytical results both indicated that it is necessary that the material used to make the negative resistance …

A Design Oriented Digital Design Language, David Michael Rouse

Masters Theses

"A digital design language is presented here which is more consistent with the design sequence of digital computer than existing languages. An ideal design sequence is first investigated and the following desirable design language characteristics obtained. A good design oriented language must be: 1) multi-level, 2) capable of expressing ideas easily, 3) easily understood, 4) machine acceptable, 5) modular and, 6) capable of showing timing and control. It should also be: 1) independent of technology, 2) unrestricted to any particular structural feature such as serial processes, synchronous processes, etc., 3) concise, 4) precise, and 5) non-ambiguous. With regard to these …