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A Study Of A Second-Order Predictive Control System, Tarkeshwar Singh

Masters Theses

"The purpose of this thesis is the study of a predictive control system by simulating it on an analog computer. Logic criteria for step reference inputs are derived by the phase- plane technique, and tie corresponding logic network designed to bring the error and error rate of the controlled system toward zero in the least possible time.

The responses of the predictive control system for step, ramp, sinusoidal and exponential reference inputs are investigated with primary emphasis placed on the rise time and overshoot for several values of step inputs of the reference.

Finally, recommendations are made for further investigations …

A Study Of The Behavior Of Zirconium In Aqueous Solutions And The Separation Of Radioactive Zirconium By Electrodialysis, Charles William Brauer Jr.

Masters Theses

"Nuclear reactor installations designed for power production must of necessity operate at higher energy levels than their experimental precursors. As these facilities increase in number, better solutions must be found for both technical and economic problems.

The disposal of waste materials is of primary importance and will require greater effort if satisfactory disposal methods are to keep pace with the increase of waste materials, produced by the increasing number of new nuclear facilities. The radioactive materials present in this waste material may constitute a valuable by-product from these operations if suitable and economic recovery procedures are developed. If the development …

An Evaluation Of State Mineral Taxation In Missouri, Jerry Wayne Huffman

Masters Theses

"A study was made to evaluate the present taxes levied on the mineral industry in the State of Missouri. The corporate income tax, corporate franchise tax, and general property taxes were examined, in addition to the mine inspection fees and methods of local assessment of mineral properties.

It is suggested that the State of Missouri revise the method of application of the general property tax to mineral properties. Utilization of the principle of taxation of future profits and employment of qualified appraisers would provide a more equitable application of the general property tax.

It is recommended that the present mine …

Investigation And Development Of Ground Water Of Chalone Creek, (Pinnacles National Monument, California), Donald Lee Brown

Masters Theses

"The Pinnacles National Monument is located in San Benito and Monterey Counties about 130 highway miles south of San Francisco, California. Because of unusual patterns in volcanic rocks, the Monument was set aside as a recreation area on January 16, 1908, by President Theodore Roosevelt. It encompasses an area of approximately 12,818 acres.

Water quality and supply problems were experienced at the Monument in the few years prior to 1961. In 1961, a collection trench system was installed to alleviate the water supply condition. A horizontal trench system, 215 feet long and four feet below the dry season water table, …

A Correlation Of Heat Transfer Coefficients Using An Induction Heater, Charles Maurice Martin

Masters Theses

"This thesis represents a study of the following problems. (1) Determination of techniques and equipment which would give satisfactory correlation of experimental heat transfer coefficients with those obtained from acceptable heat transfer equations when using an induction heater as the heat source. (2) Determination of depth of energy deposition in a thick-walled tube due to induction heating.

Techniques were developed that gave a correlation between experimental and calculated coefficients that were within -5% for minimum flow and +8% for maximum flow.

Because of difficulties in positioning thermocouples, the depth of energy deposition could not be accurately determined. However, two surface …

Development Of A Simple Bar Method Thermal Conductivity Test, V. J. Flanigan

Masters Theses

"A linear flow bar method type apparatus was set up for finding thermal conductivities by comparison techniques. Comparison technique consist of using a standard specimen where the thermal conductivity is known and comparing it to the unknown specimens to find their conductivity. Apparatus of this type usually uses thermocouples for the required temperature measurements, but thermistors were used in this experiment. The thermistors used required calibration to measure accurate temperatures and this was accomplished by using the known temperatures of the changes of state of some common materials. Five alloys were used to evaluate the method: SAE 1020 steel, gray …

Velocity Distribution Induced By Free Jet Impact On A Stilling Basin, Sedat Özkol

Masters Theses

"At present, the use of the free jet impacting on a stilling basin as an energy dissipator is not very common, as there is very little information available concerning this particular field. However, if conditions are favorable, this type of energy dissipator will be quite economical to construct.

In this paper it was found that the hydraulic behavior of the free jet impacting on a stilling basin can be determined to a degree which may be considered accurate for practical purposes. It was also shown that given the free jet velocity, the magnitudes of the velocities at the critical points …

Transpiration Cooling Of A Porous Plate, Stephan A. Sayegh

Masters Theses

"Transpiration cooling has long been known as an effective way of removing heat from porous materials. This thesis is a new approach to one of the problems of transpiration cooling in the steady state.

The specific problem considered here is that of a uniform porous plate through which a liquid is forced. This liquid vaporizes at a short distance from the surface through which it is forced and leaves the porous plate at the other surface which is exposed to hot gases. It also protects the hot surface by forming an insulating layer between that surface and the hot gases. …

Analysis Of Flat Plates By Reaction Distribution Method, David D. W. Yang

Masters Theses

"This study was made to analyze rectangular flat plates by the method of Reaction Distribution and to compare results obtained by this method with that of other methods. The basic approach is to divide the plate into an equivalent grid system and introduce temporary supports at the intersecting joints. The results from this study shows that the Reaction Distribution method is useful in a qualitative analysis of the behavior in a plate but is less satisfactory in obtaining reliable quantitative results"--Abstract, page 2.

A Study Of The Permeability And Separation Of Carbon Dioxide And Hydrogen By Gaseous Diffusion Employing Barriers Of Polystyrene, Carl J. Wallace

Masters Theses

"The purpose of this investigation was to study the permeability and separation of carbon dioxide and hydrogen by gaseous diffusion employing barriers of polystyrene. The offset of temperature and barrier thickness on the permeability and separation of carbon dioxide and hydrogen wore Investigated for barriers of one, three, and five-mil thicknesses and for temperatures of 26, 35, 45, and 50 degrees centigrade.

With an increase in barrier thickness of one to five- mils, the permeability of carbon dioxide decreased to one-fourth of its value at the one-mil thickness. The hydrogen permeability decreased to approximately two- thirds of its value at …

A Study Of Placer Tin Materials From Southern Thailand, Somkiat Ganthavee

Masters Theses

"This thesis deals with a series of investigations of placer tin samples from a Chinteik's Tin-dredge, Gnaw District, Ranong Province, and the Tin-Pet mine, Phang-gna Province, in southern Thailand.

A brief summary of the geography and geology of Thailand as a whole has been given as a general introduction to the source of the materials studied in this thesis.

The results of sieve analyses have shown that the sluice boxes do not effectively concentrate the cassiterite grain below 0.147 mm. from the rough concentrate treated in the tin-dressing shed.

It has been found that roundness and shape determinations of quartz …

Transpiration Cooling Of A Heat Generating Porous Plate, M. K. A. Hameed

Masters Theses

"This investigation is a continuation of a thesis by T. S. Purewal. Several of the simplifying assumptions made by the above author are either ignored or the justifiability of such assumptions is probed into in order to obtain a more rigorous solution. Effects of the assorted grain size, non-Newtonian cooling, direction of coolant flow, thickness of the porous heat generating plate, specific heat of the coolant, and compressibility of the coolant are investigated in this thesis. Variation of maximum temperature of both coolant and the solid material for different types of heat source distribution are also studied.

As the grain …

A Study Of Segregation In Cast Aluminum-Uranium Alloys, B. L. Bramfitt

Masters Theses

"This investigation involves a photomicrographic study of the segregation resulting from the eutectic solidification characteristics of aluminum-uranium alloys, ranging from 5 to 30 weight percent uranium. The segregation can occur in either of two manners; the first, due to the gravitational forces acting upon the growing particles which nucleate in the melt and the second, due to the mode and rate of heat transfer through the material. It was found that segregation occurred only as the result of the latter factor due to the small volume of the ingot and the rapid rate of heat transfer. The segregation was measured …

An Evaluation Of The Resistance Element Method For Measuring Detonation Velocity Of An-Fo Mixtures Confined In Small Diameter Boreholes, William Stewart Breakey

Masters Theses

"Instrumentation and techniques employing a constant current in a 4 ft. length of Nichrome resistance wire embedded in an explosive mixture were developed to measure detonation velocity in small diameter boreholes.

The resistance element technique was evaluated by detonating mixtures in iron and clay pipes, and it was shown that the current in the circuit was not constant. Velocity measurements varied from 8,000 fps to 16,000 fps. Low velocity material provided poor time - voltage traces.

The resistance element method was compared to a pin oscillograph technique, and an explanation was offered for observed differences in velocity. The standard deviation …

Shear Stress Distribution In Haunched Beam Models, Manyu K. Mehta

Masters Theses

"The purpose of this thesis has been to give the distribution of shear stress inside a haunch. A haunch is generally provided to relieve high stress concentrations at the face of the column. However the nature of shear stress distribution inside the haunch is not known.

This stress distribution was determined from a photo- elastic study on a CR-39 model. It is noted that the haunch reduces the stress concentration at the face of the column but at the same time somewhere near the point where the haunch meets the beam there is a high stress concentration.

Shear stress changes …

A Weight Loss Technique For The Determination Of Phase Boundaries, Robert Lee Benner

Masters Theses

"An apparatus has been designed and constructed that would continuously record the weight loss of a sample in a flowing inert atmosphere, at a constant temperature.

A technique has been developed to determine the phase boundaries of a binary phase diagram.

Alloys of the magnesium-nickel, cadmium-antimony, copper-cadmium, copper-zinc, and magnesium-zirconium systems were subjected to investigation to verify the operation and resolve a number of limitations of the equipment.

These investigations disclosed that the apparatus gave the best results with alloys having vapor pressures in the range between 1 and 35 millimeters of mercury"--Abstract, page 2.

Stylolites And Sedimentary Structures In The Cave-In-Rock Fluorspar District, Southern Illinois, Won Choon Park

Masters Theses

"This thesis deals with stylolites, slump structures, sulfides in the oolitic limestone, and geometry of the bedded fluorite deposits in the Cave-In-Rock fluorspar district, southern Illinois. Stratigraphic zones studied were: 1) the upper part of the lower Fredonia limestone member, 2) the upper part of the upper Fredonia limestone member,,and 3) the upper part of the Renault formation.

Geometry of the ore rocks and related structures was investigated. Most of the ore is layered and constitutes part of the sedimentary strata.

Slump structures were observed and studied in detail. Most of the slump structures show evidence which indicates a sedimentary …

An Investigation Of The Identification Of One’S Own Voice By Speech Defective And Normal Speaking Children, Robert L. Frankenberger

Masters Theses

Introduction

The purpose of this study is to test the vocal self-identification ability of children with functional defects of articulation as compared to children with normal speech. An attempt has been made to determine whether the functional articulatory defective child is able to distinguish his recorded voice from voices of other children who possess no articulatory defects.

Evaluation Of Hydroxyprogesterone Acetate In The Prevention Of Canine Estrus, Kenneth B. Haas

Masters Theses

Foreword

Thirty years ago, endocrinology was a laboratory curiosity appreciated by few veterinarians. In those rare instances when the new science escaped from the laboratory and reached the clinic, the endocrine preparations used were extremely crude and often ineffective. In the growth of endocrinology as a science, availability of pure crystalline hormones has played an essential role, and to chemical synthesis must be credited the preparations which make specific endocrine therapy possible today.

In the last two decades endocrinology has come into its own in veterinary medicine, especially in regard to sex endocrinology. But only in the last ten years …

Introducing Aquatic Ecology To Ninth Graders, Inez P. Sutton

Masters Theses

Chapter I

Introduction

In discussing the basis for teaching high school biology, Van Deventer¹ states, "...the present typical course in high school biology serves adequately neither the terminal student nor the college entrance student." He holds that today's courses present watered-down versions of college courses to the student before the intelligence of the student has matured enough to grasp such subject matter. As a result there is very little carry-over value from such courses, and the students may even develop a dislike for biology. This study constitutes an effort to understand these problems and to devise ways of solving …

A Comparison Between Signal-To-Noise Ratios Of Stutterers And Normal Speakers, Allen A. Montgomery

Masters Theses

Chapter I

The Problem and Its Background

The Problem

The problem with which this study deals, involves the question: do adult stutterers and non-stutterers differ in their ability to separate auditorily a designated sound from a background of noise?

Review of Research

Research in the field of stuttering has covered a wide area. Stutterers' metabolism has been measured, their handedness determined, and their personalities evaluated. Recently, however, the research has taken a new direction. Since the early 1950's with the development of the discipline of cybernetics, it has dealt increasingly with stuttering in terms of auditory and proprioceptive feedback, self …

The Conception Of The Proper Work Of A Missionary In The Correspondence Of Boniface, Albert Crawford

Masters Theses

First Paragraph:

The seventh through the tenth centuries witnessed a great expansion of the Roman Catholic Church to the north into lands that were partially or completely pagan. As one of the great missionary periods of the Church it demands the attention of the Church historian. As an important step in the civilization of Europe it demands the attention of the secular historian, as an expression of the contemporary doctrine of the nature of the Church and what is essential for the expansion of that Church into other cultures, it demands the attention of the theologian. The importance of this …

Two Forms Of Somatic Concern, Philip Vanevery

Masters Theses

No abstract provided.

The Building And Establishment Of Washington, 1788-1809, Robert C. Harris

Masters Theses

Preface

The following research concerns the beginnings of our national capital. Of the people who have contributed to its development, many were Americans, while others were immigrants striving for freedom in their newly established nation. To all the most important task was to find a permanent site for their national capital.

Millions of Americans have visited Washington, D. C. since 1800, leaving their beloved city with diversified ideals for its future. Dr. H. Paul Caemmerer has several quotations from famous American personalities regarding the national capital.

A Program-Approach To The Study Of Poetry, Rex Alan Romack

Masters Theses

No abstract provided.

Introducing Theory Through The Creative Approach Into The Secondary School Curriculum, Richard E. Harrison

Masters Theses

No abstract provided.

Influence Of The United Irishmen On The Mutinies At Spithead And Nore, Harvey A. Hurst

Masters Theses

No abstract provided.

Fun With Poetry In The Middle Grades, Mable M. Booker

Masters Theses

No abstract provided.

A Study Of The Use Of Visual Aids In The Instruction Of Bookkeeping In Illinois, Charles H. Baird

Masters Theses

No abstract provided.

A Plan For Teaching Listening At Benjamin Franklin Junior High School, Springfield, Illinois, Charles R. Pulliam

Masters Theses

No abstract provided by author.