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A Comparison Of The Real Price And Market Price Of Some Common Metals, Kon-Hock Khaw

Masters Theses

"A number of complex factors influence the fluctuation of the price of a metal. In this investigation, the writer is concerned with the influence of the purchasing power of the dollar and, therefore the difference between the value (real price) and market price of nine metals. That is, this is a study of metal prices and their corresponding values. No attempt is made to analyze the supply and demand of the past or the future, except as they are expressed by their function -- price.

To aid in the comparison, a set of index numbers for metals is compiled and …

A Linear Polymer X-Ray Scattering Model, Bernard Cohen

Masters Theses

"In the development of X-ray scattering intensity curves physical models are necessary for the theoretical mathematical development involved. The purpose of this paper is the development of a physical model suitable for X-ray diffraction analysis or a linear polymer.

X-ray intensity patterns may be used to give a greater insight as to the atomic structure, configuration or atoms, molecular weight, and therefore a greater knowledge of the structure of matter, both microscopic and macroscopic. The converse may sometimes be used. An atom or molecular model is constructed, from this model X-ray scattering curves may be derived. These curves may be …

The Fluorescence Of Uranium In Solid Solution, Robert Emmett Kelly

Masters Theses

"The fluorescence of uranium finds its greatest application in the so-called "bead test" which is a method of qualitative analysis. In the form of a bead, the uranium is in solid solution, and if the proper chemical solvent is used, the bead will fluoresce under ultraviolet radiation.

In the systematic separation of the metallic elements, uranium is associated with the aluminum group in that it is not precipitated by hydrogen sulfide in 0.3 N H ion but is precipitated by ammonium hydroxide and ammonium sulfide. In the analytical scheme, uranium acts like beryllium. This process of detection is sometimes tedious …

A Critical Analysis Of Several Product And Factoring Formulas, Herbert Wills

Masters Theses

No abstract provided.

Hydrology Of Small Drainage Areas, James Kinchen Searcy

Masters Theses

"Realizing the need for data on small drainage areas the Missouri Highway Commission in 1947 began a cooperative project with the Water Resources Division of the United States Geological Survey which includes the establishment of small area gaging stations and recording rain gages.

The purpose of this investigation is to study some of the data collected in the few years of operation of these small area stations with the aim of testing some of the hydrologic tools useful in the study of larger drainage basins to determine their applicability on small drainage basins. The relationship between the runoff of large …

Design Of A Galvanometer To Be Placed Within A Tubular Antenna For The Purpose Of Measuring Antenna Current Distribution, Ferdinand Henry Mullersman

Masters Theses

"The object of this paper is to design such a galvanometer for application to cylindrical UHF antennas and to discuss the procedure involving its use. The galvanometer will then be placed inside a completely isolated parasitic antenna and the distribution of current along the antenna will be measured"--Introduction, page 5.

Activation Energy For Recrystallization In Rolled Silver, Krishan Kumar Tangri

Masters Theses

"In several metals the process of recrystallization is accompanied by a change in the orientation of the recrystallized material with respect to the cold rolled material. If the change is sufficiently large, the changing position of the crystals can be determined by measuring the change in the intensity of the characteristic Bragg-reflection with a Geiger counter x-ray spectrometer. Recent determinations of the activation energies of copper and a 50/50 iron-nickel alloy have been made by using this x-ray technique. Both of these metals show a decided shift in the orientation as the material is recrystallized.

Silver was examined to find …

The Design Of A Closed-Loop Voltage Regulator For A D-C Generator, Ernest P. Longerich

Masters Theses

"The methods of obtaining voltage regulation for a d-c generator are many, and they vary in complexity according to the requirements of the loads being supplied.

A need for zero voltage regulation is not uncommon in power supplies that are used in laboratory work. It is frequently not enough, however, to have a supply whose steady state regulation is zero; the need may also exist for fast transient response to changes in load.

In general, then, the criteria for excellent voltage-versus-load characteristics of a d-c power supply might be stated as follows:

1. It has zero steady state error.
2. It has …

Photoelastic Investigation Of Notched Corners In Square Apertures In Flat Plates Subjected To Tension, Lloyd E. Byrd Jr.

Masters Theses

"Photoelastic stress analysis is one of the most effective methods available to the engineer for solving problems of stress distribution. The effect of forces, such as pressure and tension may be studied using a scale model of a structural part. Special transparent models are subjected to forces proportional to those acting on the real object. The stress problem produced in the model indicates the stress distribution through a cross-section of the structural part.

Analysis of the photographic record of the stress analysis pattern provides data with a high degree of accuracy within a relatively short time. In simple cases, this …

Transfer Function Of The Modified Kramer System, David L. Hillhouse

Masters Theses

"The use of operational mathematics in the solution of engineering problems has grown tremendously in the last two decades, particularly during the last war. This has come about because of the facility with which problems which would be almost impossibly complicated or tedious to solve by classical methods can be solved using operational calculus.

The operational calculus, particularly the Laplace transform method, has become especially useful in the field of servomechanisms and controls. Here the constantly increasing complexity of systems used has resulted in very high order differential equations. The fact that the Laplace transform method makes it possible to …

A Study Of The Effect Of Jointing On The Blasting Of Granite, Graniteville, Missouri, Avery Ala Drake

Masters Theses

"Purpose of investigation: The purpose of this investigation is to attempt to determine the influence that joints exert upon the blasting of granite and if joints are induced by blasting. The problem grew out of an explosive evaluation project that was conducted by the Mining Department, Missouri School of Mines. In late May 1950, the project was moved into the granite area near Graniteville, Missouri. It became apparent upon study of this area that the jointing would have certain effects upon the results obtained. Dr. J. D. Forrester, Chairman, Department of Mining Engineering, Missouri School of Mines, Rolla, Missouri, suggested …

The Value Of Mental Arithmetic In Grades Seven And Eight, Edward Oren Kay

Masters Theses

Chapter I

The Problem and Its Background

Introduction

This study, entitled, "An Experimental Study of the Value of Mental Arithmetic in Grades Seven and Eight," is the report of an experimental investigation in teaching arithmetic. It was conducted for the purpose of determining whether or not the use of daily drill in the four fundamental processes or arithmetic, as well as in thought problems that involve one or more of these fundamental processes, has a tendency to develop general arithmetical abilities in children.

As far as the writer can determine, little research has been done in this area. The dearth …

An Investigation Of Attitudes Toward, And Proficiencies In, Junior-High-School Arithmetic, Robert Lee Andrews

Masters Theses

Chapter I

The Problem and Its Background

Definition of the Problem

The problem of this study is (1) to determine the extent of the relationship between likes and proficiencies in certain areas of arithmetic in the seventh and eighth grades in the Milwood Junior High School, Kalamazoo, Michigan, and (2) to determine the extent of the relationship between dislikes and deficiencies.

A Comparison Of The Relative Effectiveness Of Teaching Seventh Grade Arithmetic With A Textbook And Without A Textbook, Alfred John Reynolds

Masters Theses

Chapter I

The Problem and Its Background

The Place of Arithmetic in Modern Education

The subject of arithmetic is as old as human history itself and yet it holds a very important place in modern education. In order to have a clear understanding of its present position it is desirable that a brief history of arithmetic be given. Since the history of arithmetic is long and since much has been written concerning it, an attempt will be made here to cover only the main thread in its development.

The Babylonians, according to records, made the first use of arithmetic. Karpinski …

An Experimental Study Of The Relative Effectiveness Of Drill And Incidental Teaching In The Learning Of The Multiplication Tables, Rena May Gates

Masters Theses

Chapter I

The Problem and Its Background

The Importance of Arithmetic

Man, since ancient times, has found a need for the use of numbers. This need started with simple numeration of quantities in daily life, and developed gradually to the complex use of arithmetic in trade and exchange. In the simplest form of family life, the number sense was exhibited in counting members of the family, years in one's life, or articles in one's possession. But as a family contacted other groups, and simple exchange took place, a gradual increase in need for numbers resulted in greater use of systems …

A Recommended Program Of Related Instruction For Electrical Apprentices, Andrew C. Luff

Masters Theses

Chapter I

Introduction

The Role of Apprenticeship

The institution of apprenticeship has been an important educational process since the beginning of history. Centuries ago trade skills were passed on from father to son, and from master to novice through an association whereby the craftsman taught the novice the skills of his trade. Down through history apprenticeship has flourished either in one form or another, and today it is an important part of the industrial system. Apprenticeship has developed in accord with industrial progress.

In order to avoid confusion, it may be well at the outset to designate the meaning of …

The Effect Of The Use Of A Textbook As Compared With Supplemental Material In Teaching Biology, Wayne A. Stafford

Masters Theses

Chapter I

The Problem and Its Background

Biology in the Secondary School Curriculum

There is ample evidence, both direct and tacit, that biology has justified its place in the curriculum of the secondary school.

Among the direct evidence is that stated by Heiss, Obourn, and Hoffman¹ as follows:

"On the Senior High School level, general biology is well established as a tenth grade course and is usually offered as an elective for each of three years. There is a considerable body of evidence available that seems to indicate that both general science and biology are going a long way …

Photoelastic Investigation Of Filleted Corners In Square Apertures In Flat Plates Subjected To Tension, Raymond Huston Bever

Masters Theses

"During recent years many advances have been made in solving engineering problems by mathematical means. While this method of solving problems is invaluable to the engineer, there are times when a rigorous mathematical solution cannot be readily obtained, and the engineer must resort to other methods, some of which are approximate.

This paper attempts to show the application of photoelastic investigation to such a problem. The results of this problem are quantitative, but they show without any doubt that this method of investigation has considerably influenced the modern design of machine parts and helped in many cases to improve construction …

The Polarographic Determination Of Germanium, Herbert L. Bowkley

Masters Theses

"The purpose of this investigation was to study the polarographic behavior of germanium in various aqueous solutions. In addition to the simple polarographic behavior of germanium some attention was given to the applications or polarography for the development of an anlytical [sic] procedure for its quantitative determination in zinc ore concentrates and spelter fume materials"--Introduction, page 1.

Air Flow Through Cloth Screening, Kurt Rauf Basakinci

Masters Theses

"The object of this investigation is to obtain an expression whereby flow of air through woven cloth can be predicted with a reasonable degree of accuracy, in terms of the pressure drop across the screen, the density, the viscosity of the air flowing; these latter properties being functions of the pressure and temperature of the air.

The development of an expression from which to predict the relationship between the air flow through a screen and the pressure drop across it without resort to experimental procedure seems to the author to be worthwhile undertaking.

The chief aim of this investigation was …

Integrated Scattering Of Microwaves By Small Metal Spheres, A. L. Merts

Masters Theses

"When electromagnetic radiation falls upon a material body of any kind, the associated electric field induces periodic oscillations of the electrons of the material synchronous with the incident radiation. The material serves as a secondary source and emits energy in the form of scattered radiation with a frequency equal to that of the incident electromagnetic wave. The polarization and intensity of the scattered radiation are determined by the size, shape, electric constants, and interactions among the scattering elements.

The scattering of electromagnetic waves is an old problem in physics. Such names as Rayleigh, Debye, and Mie have become associated with …

The Relationship Between The Centrifuge Moisture Equivalent And The Vacuum Moisture Equivalent In Soils, Samuel Payton Halcomb

Masters Theses

"Soil is a material that has been formed through the influence of many different natural agencies. The engineer is not so much interested in how the soil was formed, but he does want to know the characteristics of the soil with respect to its use as a structural material. Therefore, the engineer is primarily interested in the physical properties of soils.

Much progress has been made during the past twenty five years in the study of Soil Mechanics, but even today there is a tendency among engineers to think of soil as just a mixture of clay, sand, silt and …

A Stratigraphic Study Of Fusulinid Foraminifera In The Cherokee Group (Pennsylvanian) Of Western Missouri And Kansas, Ralph Orlansky

Masters Theses

"Limestones or shaly limestones, from four stratigraphic levels in the Cherokee group (Desmoinesian series) of Missouri and Kansas, contain eight species and two varieties of fusulinid foraminifera, of which four species and two varieties are new, and one ophthalmidiid foraminiferal species (Hemigordius cf. regularis Plummer). The next to highest limestone (cap rock of the Fleming coal) is correlated with the Seahorne limestone of western Illinois, the Stonefort limestone of southern Illinois, and the Munterville limestone of Iowa. Hemigordius regularis, a limestone facies foraminifer apparently marks a correlatable interval in the Ardmore limestone. Descriptions of the fusulinids and the …

Increased Stripper Well Recovery By Means Of High Voltage Electrical Heating, John Curtin Schratwieser

Masters Theses

"The purpose of this work is to investigate the possibility of using high voltage electrical heating to obtain increased stripper well production.

A substantial portion of the oil produced in the United States is obtained from stripper wells. These wells reach their economic limit when they can no longer produce sufficient oil to justify the cost of operation. In the majority of cases, however, there is still a high percentage of oil in the sand. If a production stimulus of sufficient magnitude is introduced into the formation, oil, otherwise nonproducible, may be recovered. It is the writer’s thesis that high …

Investigation Of Vacuum Tubes As Four Terminal Networks, Vasil Uzunoglu

Masters Theses

"This thesis was undertaken with the aim of consolidating the most important work that has been done in the field of equivalent vacuum tube circuits which has been found to be highly disassociated.

The author of this thesis feels that this thesis is the most complete consolidation of information on equivalent vacuum tube circuits"--Introduction, page 3.

Square Wave Modulation, Richard Henry Duncan

Masters Theses

"Modulation of a radio frequency carrier can be defined as the variation of some wave parameter such as amplitude, frequency, or phase, in accordance with intelligence to be transmitted. An unmodulated carrier is simply a continuous sine wave and contains no information other than the fact that the transmitter has been turned on. The spectrum of an unmodulated signal consists of a single frequency. Any type of modulation is characterized by the appearance of additional frequencies, known as sidebands. One of the fundamental problems in radio engineering is to reduce the number of sidebands to a minimum and still adequately …

The Completion, Adjustment, And Operation Of A Grazing Incidence Vacuum Ultraviolet Spectrograph, William Clinton Johnson-Chamberlain

Masters Theses

"Most gases, and particularly oxygen and nitrogen, are nearly opaque to radiation in the region from about 1800 Å downward to about 2 Å and hence, for spectroscopic work in this region, the removal of these gases is mandatory. Popular usage generally refers to the range mentioned above as the vacuum ultraviolet. That there remains much experimental work to be done in the vacuum ultraviolet has been pointed out by Boyce in his exhaustive survey of vacuum ultraviolet spectroscopy. In order to fill in some of these gaps, Mr. L. H. Chapin, in the, spring of 1950, undertook the construction …

A Lead Sulfide Near Infrared Detection System, William V. Cummings Jr.

Masters Theses

"The infrared region of the spectrum is conveniently divided into the near infrared, which extends from the red end of the visible to about 25 microns, and the far infrared, which continues to an ill-defined division point of approximately 1,000 microns. The near infrared region has been further subdivided on the basis of instrumental techniques so that the particular portion of the spectrum consisting of radiations of wave length up to 3 microns has become known as the photoelectric infrared.

Several types of detection instruments have been designed and perfected for work in the photoelectric region, but new methods and …

Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk

Masters Theses

"Purpose of the Investigation: The geology of the Jefferson Mine was mapped to determine the relationship of the two fluorspar veins exposed on the 260-foot level to the single vein on the 200-foot level to study the mineralogy and paragenesis of the ore, and to gain any other information that would lead to a better understanding of the fluorspar deposits"--Introduction, page 1.

A Light Source To Be Used With A Vacuum Spectrograph, Roy George Woodle Jr.

Masters Theses

"A grazing incidence vacuum grating spectrograph for use in the vacuum ultraviolet was designed and partially constructed by Mr. L. H. Chapin, as a research project for a Master’s Degree. This instrument is designed to photograph the region of the spectrum from 100 Å to 1000 Å. As Boyce pointed out in his exhaustive review, there is much important observational work to be done in this region.

The author of this paper has undertaken to develop a satisfactory source for the region from 100 Å to 1000 Å. This is part of a project to photograph the emission and absorption …