Digital Commons Network^™

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. …

Mechanics Of The Voussoir Arch As Applied To Block Caving, Christopher Haycocks

Masters Theses

"The theories of ground failure in massive rock with special reference to the problem of the mechanics of block caving were studied and evaluated.

The mechanics of arch or dome formation underground were studied quantitatively using the Voussoir arch theory. The effect of shear stress on the arch stability was considered and found to affect the system only when the arch height increased beyond certain limits.

A theory of the mechanism of ground failure in an undercut block using the dome theory was advanced. Photo- elastic model studies were used to support the conclusions reached"--Abstract, page i.

An Investigation Of Lehmer's Method For Finding The Roots Of Polynomial Equations Using The Royal-Mcbee Lgp-30, James W. Joiner

Masters Theses

“The solution of the general polynomial equation f (x) = O, where f(x) = a_nxⁿ + a_n-1x^n-1 + … + a₁x = a_o, has received the attention of many mathematicians for hundreds of years and is at present in a very highly developed state. Even a cursory examination of the literature will reveal many volumes on this subject. However, this study is concerned primarily with the numerical methods for solving polynomial equations, hence the classical methods will be treated here only as they contribute to this field.

Virtually all of …

Thermal Conductometer For Liquids, Yuan-Kai Chang

Masters Theses

"The published data pertaining to the thermal conductivity of liquids are of such a character that it is very difficult to determine from them the correct value, or the temperature coefficient for any liquid.

Most of the published values of thermal conductivity for liquids are evaluated at one particular temperature. It is the purpose of this investigation to design, construct and calibrate a thermal conductometer for liquids over a temperature range of 30°F to 200°F.

Since water and glycerol were the only liquids found by this investigator with published data on their conductivities as a function of temperature, they were …

Electrodeposition Of Antimony From Sulfide Melts, Mahendra N. Rana

Masters Theses

"A study of the current-potential relationships, and the electrodeposition of antimony metal was conducted for fused mixtures of Sb₂S₃-Na₂S, Sb₂S₃-Sb and Sb₂S₃-NaCl-KCl in the temperature range of 700° - 900°C. An attempt was made to determine the mutual solubility of molten antimony and Sb₂S₃-Na₂S melts. The microstructure of deposited metal was studied metallographically. Analysis of phases present in the matte mixture (Sb₂S₃-Na₂S) was made by x-ray diffraction patterns.

All investigations were carried out in …

A Survey Of The Influence Of Selected Sulfides On The Thermal Decomposition Rate Of Zinc Sulfate, L. G. Twidwell

Masters Theses

"The influence which ZnS, CdS, Cu₂S, PbS, and FeS has on the thermal decomposition rate of ZnSO₄ was studied by measuring the SO₂ gas evolved per unit of time for various ZnSO₄-MeS mixtures at 600°C, and analyzing the solid phases by means of X-ray diffraction patterns.

The SO₂ gas evolved upon heating the pellets was analyzed as a function of time by absorbing the gas in a solution of distilled water, H₂O₂, and NaOH, and measuring the time required for the SO₂ to neutralize the NaOH. The gas …

Fort St. Joseph Under French Control: 1693-1760, Cornelius Eringaard

Masters Theses

Preface

The purpose of this paper is to trace the history of Fort St. Joseph. In the process, I shall try to show Fort St. Joseph's historical setting in international and regional economics and politics. Regional and international events are included when necessary for this understanding.

Certain difficulties confront the researcher when he undertakes a study of this type. (A language barrier prevents me from reading my French documents which may have contained pertinent information.) Much source material is probably buried in the Paris archives, or in the archives of Quebec, two places I was unable to visit. I have …

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.

A Survey Of Current Techniques For Selecting First-Line Supervisors In Industry, Linford A. Sutherland

Masters Theses

Introduction

The purpose of this investigation is to show to what extent the selection of supervisors is still based on subjective opinion, and to what extent objective devices have been developed and have gained acceptance.

The collection of relevant data for this survey involves a search of the published literature in the field. In this work the terms first-line supervisor, foreman, and supervisor will be used interchangeably.

The writer's interest in the area of supervisory selection was aroused after reading several articles on the problem of selecting factory supervisors of the highest caliber as industry now realizes that the supervisory …

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 First British Labor Government 1924, Donald Black

Masters Theses

Introduction

In 1924, the Labor Part, assumed control or Britain's political destinies for the first time. Although its tenure or office was brief, from February through October of that year, it marked an important milestone in the slow, unrelenting progress of democratic socialism in the British political spectrum after the conclusion of World War I. Not only did it reveal that Labor could assume its role as an effective opposition Party, but also that Labor had the capacity to govern in a difficult and perplexing era.

Validity Of The Goodenough Draw-A-Man Test With Children Aged Four, Five, And Six, Jaren Van Den Heuvel

Masters Theses

No abstract provided.

A Study Of The Characteristics Of Pupil Dropouts With Special Reference To The Ninth And Tenth Grades Of United Township High School, East Moline, Illinois, Charles W. Morrison

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.

An Analog Method For The Determination Of The Deflection Of Beams Resting On End Supports And Design Of An Automatic Programming Device, Paul C. Jackson Jr.

Masters Theses

"This investigation shows that beam problems can be solved easily and accurately with an analog computer. Two problems were solved as to their shear, moment, slope and deflection along the length of the beam and the graphs drawn by the analog computer were compared with calculated values. Very little difference was found between them.

An electronic programmer was built to aid in handling beam problems as they were being run on the computer. This was capable of putting into the computer bits of data at specified intervals of time. The programmer proved reliable and repeatable once it was adjusted to …

Use Of Light-Weight Steel Strapping As External Reinforcing To Concrete Beams, John O. Buchanan

Masters Theses

"As a result of some recent failures in reinforced concrete construction throughout the United States, a study was made by several national authorities to find some remedial measures of strengthening existing structures without rebuilding. A system was developed, using high strength steel bands applied externally to beams, to act as stirrups, which has been highly successful. It not only greatly increased the strength of beams already in place but was used to repair members which had already failed.

The application of these bands was made under very exact specifications, using closely controlled procedures, with many physical refinements, in order to …

A Comparison Of Industrial Arts Curricula In Selected Colleges And Universities In The Middle West 1955-1956 And 1959-1960, Eugene Frantz

Masters Theses

No abstract provided.

A Rhetorical Analysis Of Jane Addams' Speech Of July 9, 1915, Delvenia Gail Shadwell

Masters Theses

No abstract provided.

A Method Of Estimating Groundwater Influx Into A Vertical Mine Shaft, Morris T. Worley

Masters Theses

"Prediction of groundwater influx into mine openings is one of the more important pre-development problems encountered in mining. A satisfactory method of estimation would provide the information necessary for a mining company to dewater prior to shaft sinking, pre-grout the shaft area, or plan pumping schemes to handle the expected flow.

A standardized field method of estimating groundwater supply from pumping test data was developed by O. V. Theis and others. In the present research problem, the estimation procedure has been simplified by the use of nomograms. Certain modifications in the estimate must be made when a pumping well is …

A Third Approach To High School Physics, Jon Lyle Higgins

Masters Theses

No abstract provided.

An Analysis Of The Drop-Outs Of The Classes Of 1955 And 1956 At Eastern Illinois University, David L. Mcinroe

Masters Theses

No abstract provided.

A Survey Of The Bookkeeping Systems And Practices In A Selected Group Of Businesses Of Peoria, Illinois, John H. Morrisey

Masters Theses

No abstract provided.

A Proposal For A Preventive Play Therapy Program For Kindergarten Through Third Grade, Donna R. Ricchiardi

Masters Theses

No abstract provided.

The Effectiveness Of The Guidance Program In Curbing Drop-Outs In The State Of Illinois, Emil A. Whittaker

Masters Theses

No abstract provided.

An Analysis Of Drinking Practices And Problems Among Male Undergraduates At A Midwestern University, Ronald Charles Vanderkooi

Masters Theses

The purpose of this research was to study the patterns and problems of drinking among men at a Midwestern university. The primary method used in the study was a questionnaire given to a cross-section of the male student body. The study was designed to determine the extent of drinking at the university. Such factors as the frequency and locality of drinking were investigated. Attitudes concerning college drinking were also explored. Finally, the study was concerned with problems associated with the use of alcohol by students.

A Study Of The Transient State Of Transpiration Cooling, William C. Wolkenhauer

Masters Theses

"This thesis is a successful attempt to show a new approach to the transpiration cooling problem. Transpiration cooling has long been known as an effective way of removing heat from porous material.

It is shown here that transpiration cooling from a porous material, assuming a temperature difference between the coolant and the porous material, is less effective than where the coolant within the pores is assumed to be at the same temperature as the material adjacent to the pore. Previous investigators made the latter assumption.

The specific problem considered here is that of a uniform, porous plate with constant physical …

Preliminary Study Of An Optimum Vibration Absorber For A Multi-Mass System With Multiple Excitation, John Raymond Burrows

Masters Theses

"The object of this thesis is to demonstrate, by the use of a modern digital computer, a fast, efficient method to eliminate or minimize undesirable stress conditions in a multimass vibrating system with multiple excitation. The condition desired is obtained by the addition of an optimum tuned and damped dynamic vibration absorber, for one critical speed only.

Maximum stress is the criteria used for design here and not amplitude as has been used previously by all other authors.

This solution requires the applied torque to be reevaluated as an average torque and a number of half integer harmonics. This method …

Transpiration Cooling Of A Plane Porous Plate, Raymond George Posgay

Masters Theses

"The transient temperatures were determined in a porous plate for one dimensional heat flow and one dimensional counter coolant flow. One surface of the porous plate was heated by a hot gas by convective heat transfer. A general discussion of the problem is considered and the procedure described for working all such problems dealing with transpiration cooling.

The solution of such problems is illustrated by two examples employing a ceramic plate one inch thick and cooled by a uniform flow of air in a direction counter to the flow of heat, while one surface of the ceramic plate was heated …

Effect Of Deflections For A Flat Plate By Slope-Deflection-Gyration Method, William Hsin-Loo Ying

Masters Theses

"Since the procedure for the theoretical solution of a rectangular flat plate or slab is complex, many approximate methods for determining the moments and deflections of such plate have recently been developed. One of these methods is the so called Slope-Deflection-Gyration Method which is performed by means of basically well-known structural theories - slope-deflection and torsion.

For a given plate, it is assumed that the plate is to be divided up into a grid of strips or equivalent beams at right angles to each other. The joints of this grid are assumed to be rigidly intersected and be permitted to …