Digital Commons Network^™

Differentiated Staffing : A Potential Means To Educational Improvement In The Elementary Schools With Specific Consideration To Mohall Elementary School, Kayleen Wardner

Theses and Dissertations

No abstract provided.

A Study Of The Carbonization And Activation Conditions For The Production Of Water Treatment Carbon From North Dakota Lignite, Bruce Johnson

Theses and Dissertations

No abstract provided.

Ddt-Induced Chromosomal Aberrations In Mice, Gregg A. Johnson

Theses and Dissertations

No abstract provided.

The Economic Impact Of American Troop Withdrawal From Vietnam On The American Economy, 1971-1972, Curtis D. Lee

Theses and Dissertations

No abstract provided.

Thermal Dissolution Of Lignite Under Pressure Of Carbon Monoxide And Water, Michael Kuo-Tay Peng

Theses and Dissertations

The relative effects of different operating conditions in the reaction of lignite with carbon monoxide and water were studied in £ microautoclave.

A Greco-Latin square experimental, design was employed to test four independent variables at four levels.. Independent variables were reaction temperature, initial.pressure of carbon monoxide, reaction time, and the ratio of water to lignite. The dependent variable was the per cent solubilization of lignite calculated from the amount of residue recovered and initial moisture- and ash- free weight of -lignite charged.

An analysis of variance indicated that at the 99 per cent confidence level only the temperature was significant. …

Separation Of Benzene And N-Hexane Using A Liquid Membrane Technique, Navin D. Shah

Theses and Dissertations

The separation of a mixture of benzene and n-hexane was studied using a liquid membrane technique. Sparkleen^ detergent was used as the surfactant and heavy mineral oil was used as the solvent to receive the permeate.

The effects of the following variables on the separation factor were investigated:

1. The relative proportion of benzene and n-hexane in the original mixture.

2 . Surfactant concentration.

3 . Quantity of surfactant solution.

4. Amount of solvent.

5 . Contact time with solvent.

The effect of each variable was studied by varying the values of that variable while holding other variables constant.

It …

The Involvement Of The Military In The Affairs Of Modern Mexico, Anthony G. Salerno

Theses and Dissertations

Unlike other Latin American nations, the Mexican armed forces have not resorted to a coup d'etat in the last fifty years, and at the same time have maintained a strong influence in the affairs of the nation.

In this thesis, the writer has tried to explain reasons why the Mexican military has not found it necessary to try to overthrow the government.

The procedure used was to collect and analyze data on the Mexican armed forces, military, and non-military functions and roles to determine reasons for this situation in Mexico. The writer experienced great difficulty in collecting data, nevertheless, in …

A Study Of The Bulk Electrical Resistivity Characteristics Of Fly Ash From Lignite And Other Western Coals, Warren Ernest Bucher

Theses and Dissertations

Fly ash produced from burning fossil fuels presents an air pollution problem when it is discharged into the atmosphere. Fly ash can be removed from gases using electrostatic precipitation. Efficiency of precipitation depends to a large extent on the bulk electrical resistivity of the fly ash which in turn depends on conditions such as ash temperature, moisture content of the gas, and ash composition. Bulk electrical resistivity is the total resistivity of a dust layer.

A bulk electrical resistivity testing apparatus was built and operated according to the American Society of Mechanical Engineers Power Test Code 28 to investigate the …

Reporting The Results Of Operations In The Computer Industry, Donald T. Swenson

Theses and Dissertations

No abstract provided.

Return On Investment -- Its Methods And Uses, Alan B. Klein

Theses and Dissertations

No abstract provided.

An Evaluation Of The Concepts Of Delegation Held By Middle Management In The Computer Industry, Paul Johnson

Theses and Dissertations

This study is an investigation into the modern theory of delegation of authority as viewed by middle managers. Seven theoretical principles of delegation are set forth and seven obstacles to the efficient use of delegation. An empirical study was made by surveying a number of middle managers at the Honeywell corporation, Minneapolis Minnesota. Personal interviews and a questionnaire were used to determine the attitudes of various managers toward delegation principles and practices. An analysis of the data indicated a number of obstacles~ in the practice of delegation; the author suggests elimination of these problem areas will require both a procedural …

Microfilm Technology Its Role In Modern Management, Thomas A. Pawlow

Theses and Dissertations

No abstract provided.

The Design Of A Laser Doppler Velocimeter, Marlo R. Anderson

Theses and Dissertations

A relatively new method of measuring local velocity in a fluid stream has been devised which eliminates some of the inherent problems of the traditional methods. This method senses the Doppler shift of light scattered from a laser beam incident on particles suspended in the fluid. The Doppler shift is proportional to the particles (or fluid) velocity. This new technique has several distinct advantages over the more traditional methods of velocity measurement.

A Study Of The Effects Of Some Parameters Of The Galloping Of Electric Transmission Lines, Leland J. Coleman

Theses and Dissertations

Freezing rainstorms coupled with moderate winds have often been observed to cause telephone lines and power transmission cables to begin bouncing up and down. This slow frequency high amplitude oscillation, or galloping as it is sometimes called, can build up to large amplitudes before the oscillation either damps out or persists at some constant amplitude. It has been reported by Edwards and Livingston [1] that the amplitude of galloping on transmission lines has been as large as forty feet. Galloping oscillations occur at relatively low frequencies; from .1 to 1 Hz. [1] near the natural frequency of the suspended cable.

A Comparison Of Biological Characteristics Of Goldeye, Hiodon Alosoides (Rafinesque), In Garrison Reservoir, Donald Eugene Miller

Theses and Dissertations

Age and growth and other biological characteristics of goldeye were compared at five widely separated stations on Garrison Reservoir in 1968 and 1969. All samples were collected with experimental gill nets fished near the surface. In 1968, goldeye comprised 88.56 percent of the total catch of 1,381 and in 1969, they made up 94.42 percent of the total catch of 2,230 fish. It was found that growth patterns of goldeye at the various stations were statistically different, which may be attributed to the differences in turbidity, temperature and possibly other limnologic conditions. Although statistical differences were found the actual differences …

An Analysis Of The Marketing Practices Of Selected Snowmobile Companies In North America, James G. Eaton

Theses and Dissertations

This thesis describes and analyzes the marketing practices of snowmobile companies in North America. The data were obtained principally from a review of related literature and from structured interviews with representatives from selected snowmobile companies in North America. The main topics discussed in the thesis are: consumer attitudes, channels of distribution, methods of physical distribution, pricing methods and policies, advertising methods and sales promotion.

Snowmobiles were purchased primarily for personal pleasure, racing, and family pleasure. Three major characteristics considered by consumers in choosing a brand of snowmobile were the dependability and reliability of the snowmobile, the quality of the construction …

The Removal Of Sodium From Lignite By Ion Exchange, John T. Crystal

Theses and Dissertations

The rate and extent of sodium removal from lignite by ion exchange were studied using calcium chloride solutions. The experimental apparatus consisted of a centrifugal stirring device in a limited bath. Four variables, rotation speed, calcium chloride concentration, particle size, and moisture content were considered.

It was determined that rotation speed had no discernable effect on the rate or extent of sodium removal. Particle size and moisture content, however, do have considerable effect on the rate and extent of sodium removed. It was also found that as the calcium chloride concentration was decreased the exchange approached theoretical stoichiometric proportions.

The …

The Effects Of Positive And Negative Job Assignments On The Academic And Job Performances Of Working Students, Charles Patrick Doherty

Theses and Dissertations

No abstract provided.

A Dynamic Model Of A Small Manufacturing Company, Abraham John

Theses and Dissertations

A manufacturing company typically has the objective of maximizing the long-term value of its common stock while satisfying its customers. To achieve this, the company might increase the quantity and improve the quality of production. Since the company is operating in a dynamic environment, its policies should be dynamic also, to achieve its objective.

A Data Reduction Technique For Drag-Coefficient Data For Spheres, Stephen Thomas Merrell

Theses and Dissertations

The object of this investigation was to obtain a reliable technique for finding the drag coefficient for a sphere falling at a non-constant velocity through air. And then to apply this technique to the data collected by R. G. Lunnon in 1925^(4)*.

An Optimization Technique Applied To The Determination Of Modal Damping Coefficients, Craig C. Smith

Theses and Dissertations

Although analytical techniques are generally available for the simulation of dynamic systems, often these techniques require a great deal of computer time and storage. This difficulty was vividly pointed out by a previous thesis undertaken in this Department by R. L. Webster (1). Mr. Webster undertook the determination of orthotropic material properties using dynamic response test data from plates. A major difficulty which was encountered was the enormous amount of computer time required for the simulation. This thesis is an investigation of a method which when fully developed, may provide the ability to simulate such systems much more efficiently.

A Study To Determine The Effectiveness Of The Business Education Curriculum At The Epping Public School Epping, North Dakota, Gary D. Bickel

Theses and Dissertations

No abstract provided.

Temperature Protection For Fruit Trees By Air-Supported Plastic Structures, Ram T. Gadhavi

Theses and Dissertations

The greatest weather enemy in all fruit destruction is the late spring frost which moves across the country under the high pressure areas that are occasionally seen on the weather maps, and kills the fruit buds.

Accounting Treatment Of Research And Development Costs, Cecil B. Ellis

Theses and Dissertations

The expenditures for industrial research and development by companies have increased significantly in recent years and this has had a dramatic impact upon the reported financial position and results of operations of those companies engaged in substantial research and development programs. It was determined that the majority of companies treat research and development costs as a current expense which in many instances does not adhere to sound accounting theory. The companies justified using the current expense method in accounting for research and development expenditures because of conservatism, expediency, the uncertainty of future benefits, and the acceptability by the Internal Revenue …

The Design Of A Life Support Circulation System For Hyperbaric Chambers, Kenneth P. Orchuk

Theses and Dissertations

The purpose of this thesis was to present the design of a Life-Support Circulation System for Hyperbaric Chambers as specified by the Themis Committee.

An important objective was to design a versatile circulation system which could be constructed from commercial products.

Circulation specifications were set by conditions required for the animals under observation in the hyperbaric chambers. Since these studies were to be conducted for prolonged periods, cost analysis warranted a closed system design.

The versatility of the system required investigation of several types of valves for satisfactory operation. Also, pressure monitoring controlled valves and pressure regulators had to be …

Communication Of Experimenter Expectancy As A Function Of The Internal-External Locus Of Control, Diane M. Harder

Theses and Dissertations

Several studies suggest) that experimenters may influence subjects in experimental situations and thereby obtain the predicted results (Rosenthal, 1966). Thus, the results obtained in research may reflect (1) independent vatfiabl.es, and (2) bi. resulting from the communication of expectancies by the experimenter.

Although numerous investiga^ ons have considered characteristics of experir nters and subjects that facilitate expectancy communication, the experimenter effect remains inadequately explained (Fode, 1967). It was felt that the Investigation of an additional variable, internal-external locus of ontrol, (Rotter, 1954) might contribute further informationL Past research suggested that internal subjects are better influencers (Pharos, 1965), and that they …

The Effects Of Sex And Levels Of Acquaintance On Risk-Taking In Groups, Richard A. Harper

Theses and Dissertations

Problem: This study had three purposes: (1) to test for differences in risk-taking among all male, all female, and mixed-sex groups; (2) to test for differences in risk-taking between low acquaintance groups and high acquaintance groups; and (3) to investigate whether or not familiarity with the risk-taking instrument, the Choice Dilemmas Questionnaire, affected risk-taking.

Procedure: The subjects used in this study were 144 male and female freshmen who were enrolled in Humanities 101 at the University of North Dakota in the fall semester of 1969. The subjects were randomly selected from the total male and female freshmen population who were …

An Exploratory Study Of Holland's Theory Of Vocational Choice And Rotter's Social Learning Theory, James A. Foster

Theses and Dissertations

Purpose: The purpose of this study was to explore the relationship between Holland's theory of vocational choice and Rotter's social learning theory. More specifically, it was aimed at examining the interplay between internal-external locus of control and consistent and inconsistent vocational patterns to determine whether the apparent differences between personality theory and vocational choice theory could be reduced.

Subjects: The subjects were 493 freshmen males who entered the University of North Dakota during the Summer or Fall of 1967, participated in the Orientation Program, and completed one semester of course work. In accordance with the experimental design 474 subjects of …

A Study Of The Airline Industry's Financial Problems, Thomas H. Berge

Theses and Dissertations

No abstract provided.

Development Of Procedures For Determination Of Yield Lines, Rafik Y. Itani

Theses and Dissertations

This thesis presents methods for determining yield line patterns of isotropic plates that are uniform in thickness and subjected to a uniform loading. The importance of these methods arises from the mathematical complications involved in finding yield line patterns by the present procedures .

Since yielding patterns are dependent on the shape of a plate as well as the support conditions, the methods recommended here will be based on assuming a yielding pattern and checking for its correctness. The use of the computer can provide many trial solutions in a very short time. The correct pattern will be that which …