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Articles 190741 - 190770 of 196857

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Simulation Of The Cyclic Steam Injection Process In A Petroleum Reservoir By A Finite Difference Mathematical Model, Jean-Claude Bernys Jan 1969

Simulation Of The Cyclic Steam Injection Process In A Petroleum Reservoir By A Finite Difference Mathematical Model, Jean-Claude Bernys

Masters Theses

"A three-phase, one-dimensional radially layered reservoir simulator is programmed for a large memory digital computer. It is designed to provide a practical solution to the problem of determining optimum soak time during an intermittent steam injection process. The general approach is to (1) develop a representative mathematical model which describes the reservoir; and (2) employ a suitable numerical technique to solve the system of equations which comprises this model. The reservoir consists of concentric cylinders around the wellbore, a pay-zone stratified into thermally connected layers limited on the top and on the bottom by an impermeable cap and base rock, …

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A Theoretical Analysis Of The Free Vibrations Of A Clamped Circular Plate With Damping, Bhalchandra Krishnaji Vaidya Jan 1969

A Theoretical Analysis Of The Free Vibrations Of A Clamped Circular Plate With Damping, Bhalchandra Krishnaji Vaidya

Masters Theses

"A theoretical analysis of the free vibrations of a clamped circular plate was undertaken. The effects of transverse shear were considered for application to relatively thick plates in which there exist sharp transients and frequencies corresponding to higher modes. The method adopted by R. D. Mindlin was used to develope [sic] the differential equation of motion for the plate. The damping effect due to the resistance of the medium in which the plate vibrates was also considered. This damping was assumed to be due to the generation of pressure waves caused by the displacement of the plate...Since the solution requires …

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A Digital Technique For Combining Frequency Standards, Lynn James Hawkey Jan 1969

A Digital Technique For Combining Frequency Standards, Lynn James Hawkey

Masters Theses

"A new technique for combining multiple frequency standards into a single timing reference based on the average of the frequency of each input is described. The uniqueness of this approach is that it is an all-digital scheme utilizing delay lines and high-speed logic elements currently available. The present and future applications of combiners are discussed, the requirements are highlighted, several digital solutions are briefly described, and the detailed block diagrams and characteristics of a particular general purpose combiner are presented. It is suggested that the optimum combiner include a stable quartz crystal oscillator with a frequency control feature. The output …

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An Investigation Of The Application Of Photoelastic Coatings To Soil Studies, James Kenneth Meisenheimer Jan 1969

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 …

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A Design Oriented Digital Design Language, David Michael Rouse Jan 1969

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 …

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Basic Design Of Mosfet, Four-Phase, Digital Integrated Circuits, Earl Morris Worstell Jan 1969

Basic Design Of Mosfet, Four-Phase, Digital Integrated Circuits, Earl Morris Worstell

Masters Theses

"MOSFET is defined as metal oxide semiconductor field-effect transistor. The integrated circuit design relates strictly to logic and switching circuits rather than linear circuits. The design of MOS circuits is primarily one of charge and discharge of stray capacitance through MOSFETS used as switches and active loads. To better take advantage of the possibilities of MOS technology, four-phase (4[phi]) circuitry is developed. It offers higher speeds and lower power while permitting higher circuit density than does static or two-phase (2[phi]) logic. Equations are developed that apply directly to the design of four-phase logic along with examples of circuitry that show …

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Stochastic Simulations Analysis And Determination Of Iteration Requirements, James Walter Smith Jan 1969

Stochastic Simulations Analysis And Determination Of Iteration Requirements, James Walter Smith

Masters Theses

"A thorough analysis of computerized stochastic simulation problems has been undertaken to determine the number of iterations (or random draws) necessary to achieve a required degree of output accuracy. The basic problem is to determine when the sampled output mean and standard deviation are within specified accuracy limits. An error analysis is made of the statistical properties of deterministic-probablistic [sic] and logic (random walk) type problems. A recommendation for determining the number of problem iterations required is then presented"--Abstract, page ii.

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Sorption And Desorption Of Chlorinated Hydrocarbon Pesticides By Clay Minerals, Cheng Sun Liao Jan 1969

Sorption And Desorption Of Chlorinated Hydrocarbon Pesticides By Clay Minerals, Cheng Sun Liao

Masters Theses

"This thesis describes the sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals under laboratory controlled environmental systems. Particular emphasis was directed toward the investigation of the fundamental adsorption phenomena which occurred in selected pesticide-clay systems. the effects of certain environmental stresses, including pH, temperature and salt (NaCl) concentration of water, on the behavior of sorption and desorption were also studied. Pesticides selected for this study included DDT, dieldrin and heptachlor, and clay minerals employed were kaolinite, montmorillonite and illite. The adsorption rate and equilibrium were evaluated by batch techniques employing completely mixed systems while the effects of the …

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Correlation Of Particulate Theory And Behavior Of Real Soils, Christopher Byron Groves Jan 1969

Correlation Of Particulate Theory And Behavior Of Real Soils, Christopher Byron Groves

Masters Theses

"The behavior of granular soils subjected to triaxial stresses can be explained in terms of a combination of elastic deformation and sliding friction. Three sans and a coarse silt at various initial void ratios were tested in drained triaxial compression. Cell pressures were varied between 50 and 1500 psi. Prediction techniques for simulating laboratory data was based on various packings of equal radii spheres. Equilibrium and compatibility equations were used to calculate the principal strains under certain applied stresses. The assumed arrays predicted much smaller strains than those than the soils exhibited. If these strains were subtracted from those observed, …

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A Comparison Of Lumped Parameter Models Commonly Used To Describe One-Dimensional Vibration Problems, Suresh Kumar Tolani Jan 1969

A Comparison Of Lumped Parameter Models Commonly Used To Describe One-Dimensional Vibration Problems, Suresh Kumar Tolani

Masters Theses

"Three lumped parameter model representations of the one-dimensional uniform continuous system in a vibration state are examined. The exact (continuous) solutions were used as a reference to evaluate the accuracy of the results obtained via these discrete element models. The model comparisons, carried out for both the principal modes and the systems under forced excitations, are based on the maximum strain energy. The effect of varying the number of segments in the model representation showed improvement in approximating the exact strain energy solution as the number of segments was increased. In general, the results of the model comparisons based on …

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Dynamic Response Of A Gyrocompass, Subhash Govind Kelkar Jan 1969

Dynamic Response Of A Gyrocompass, Subhash Govind Kelkar

Masters Theses

"A gyrocompass with three degrees of freedom is studied and an attempt made to solve the exact equations of motion numerically. The equations are obtained by using the Lagrange formulation of the problem. The kinetic energy and the potential energy of the system are determined from the energies of the various components. These are then substituted into Lagrange's equation to obtain the three equations of motion for the three angular coordinates. As few restrictive assumptions as possible are made during this development. From these exact equations of motion an approximate analytical solution is obtained by making several assumptions and then …

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Selection Of Soil Strength Values For The Design Of Flexible Pavements : Technical Paper, Eldon J. Yoder Jan 1969

Selection Of Soil Strength Values For The Design Of Flexible Pavements : Technical Paper, Eldon J. Yoder

JTRP Technical Reports

No abstract provided.

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Accident Analysis At Railroad-Highway Grade Crossings In Urban Areas: Technical Paper, William D. Berg, Joseph C. Oppenlander Jan 1969

Accident Analysis At Railroad-Highway Grade Crossings In Urban Areas: Technical Paper, William D. Berg, Joseph C. Oppenlander

JTRP Technical Reports

No abstract provided.

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No-Passing Zones: Criteria, Legislation And Location, Valkenburg Gerald Van Jan 1969

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

JTRP Technical Reports

No abstract provided.

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Temperature Effects On The Compaction And Strength Behavior Of Clay, William H. Highter Jan 1969

Temperature Effects On The Compaction And Strength Behavior Of Clay, William H. Highter

JTRP Technical Reports

No abstract provided.

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An Operational Planning Information System For Small Communities : Draft Copy, Robert J. Maxman, William Louise Grecco Jan 1969

An Operational Planning Information System For Small Communities : Draft Copy, Robert J. Maxman, William Louise Grecco

JTRP Technical Reports

No abstract provided.

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Multispectral Data Interpretation For Engineering Soils Mapping : Technical Paper, Marc Giles Tanguay Jan 1969

Multispectral Data Interpretation For Engineering Soils Mapping : Technical Paper, Marc Giles Tanguay

JTRP Technical Reports

No abstract provided.

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Financing The Highway Needs Of Indiana, Harold L. Michael, James A. Metcalfe Jan 1969

Financing The Highway Needs Of Indiana, Harold L. Michael, James A. Metcalfe

JTRP Technical Reports

No abstract provided.

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Activity-Accessibility Models Of Trip Generation : Progress Report, Tamman Zaki Nakkash Jan 1969

Activity-Accessibility Models Of Trip Generation : Progress Report, Tamman Zaki Nakkash

JTRP Technical Reports

No abstract provided.

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Major Aspects Of The Urban Transportation Planning Process : Interim-Summary Report, William Louise Grecco Jan 1969

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

JTRP Technical Reports

No abstract provided.

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Use Of Precast, Prestressed Concrete For Bridge Decks : Progress Report, James H. Ford Jan 1969

Use Of Precast, Prestressed Concrete For Bridge Decks : Progress Report, James H. Ford

JTRP Technical Reports

No abstract provided.

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Tests Of Prestressed Concrete Beam Splices, Martin J. Gutzwiller, Robert H. Lee Jan 1969

Tests Of Prestressed Concrete Beam Splices, Martin J. Gutzwiller, Robert H. Lee

JTRP Technical Reports

No abstract provided.

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The Gcars Ii System : Technical Paper, A. Keith Turner Jan 1969

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

JTRP Technical Reports

No abstract provided.

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The Gcars System Fortran Iv Programmers Manual, Part A - Programs For Data Collection And Evaluation Part 3 A, A. Keith Turner Jan 1969

The Gcars System Fortran Iv Programmers Manual, Part A - Programs For Data Collection And Evaluation Part 3 A, A. Keith Turner

JTRP Technical Reports

No abstract provided.

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The Gcars Fortran Iv Programmers Manual, Part B - Programs For Generation Of Alternatives Part 3 B, A. Keith Turner Jan 1969

The Gcars Fortran Iv Programmers Manual, Part B - Programs For Generation Of Alternatives Part 3 B, A. Keith Turner

JTRP Technical Reports

No abstract provided.

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On The Influence Of Surface Roughness On The Determination Of Diffusion Constants, Manfred Wuttig Jan 1969

On The Influence Of Surface Roughness On The Determination Of Diffusion Constants, Manfred Wuttig

Materials Science and Engineering Faculty Research & Creative Works

No abstract provided.

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Inventory Of Indiana County Bridges, Jean E. Hittle Jan 1969

Inventory Of Indiana County Bridges, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

The purpose of this report is to bring county bridge needs into focus-state-wide and county-by-county-through a detailed computerized inventory listing of all existing county bridges. Each county's inventory listing has been further summarized as to the number of bridges by length and width categories, along with an estimated replacement cost. This inventory report thus gives a measure and dimension to the county bridge problem. Hopefully this information will assist local road officials, legislative study groups, and members of the General Assembly in weighing alternate solutions to the financing of county bridge programs.

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1969 Handbook Of Facts And Figures On Indiana County Roads—Including Directory Of County Highway Departments, Jean E. Hittle Jan 1969

1969 Handbook Of Facts And Figures On Indiana County Roads—Including Directory Of County Highway Departments, Jean E. Hittle

Indiana Local Technical Assistance Program (LTAP) Publications

This handbook will assist county road officials in the planning of county road operations. The data and information included in this handbook are either statistical or public information which are already available from the official sources, but which needed to be brought together for convenient distribution and use.

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Evaluation Of The Performance Of Ultrasonic Equipment For Pavement Thickness Measurements, Charles F. Scholer, Raymond Doran Pavlovich Jan 1969

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

JTRP Technical Reports

No abstract provided.

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A Study Of The Behavior Of Reinforced Concrete T-Beams Subjected To Repeated Loads, Robert S. Platoni Jan 1969

A Study Of The Behavior Of Reinforced Concrete T-Beams Subjected To Repeated Loads, Robert S. Platoni

JTRP Technical Reports

No abstract provided.

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