Digital Commons Network^™

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 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.

The Effects Of Various Treatments On Thiamin Diphosphate And Total Thiamin Levels Of Rat Tissues, Dong Hwa Park

Theses and Dissertations

Tissue thiamin diphosphate was assayed enzymatically utilizing purified brewer's yeast apotransketolase. With this assay ten uumoles of thiamin diphosphate could be detected. Total thiamin was fluorometrically measured. For one to three days rats were placed under conditions of stress, consisting of loud noise treatment, emotional stress, deprivation of paradoxical sleep, and swimming to exhaustion, respectively. The body weight was markedly decreased at the end of the respective experimental periods except with the loud noise treated group, compared with the corresponding controls. Following two to three such consecutive treatments, the adrenal weight also showed a significant increase. Thiamin diphosphate and total …

The Effects Of Herbicide Applications On The Animal Populations Of Aspen Communities, Carl Eugene Wadsworth

Theses and Dissertations

Approximately 475 acres of aspen, oak brush, and grass-forb-shrub communities were treated with herbicides. The populations of arthropods, birds, and mammals were investigated on treated and untreated areas and the results were compared. There was no difference between soil arthropod populations on treated and untreated aspen plots but a significant increase in these populations on treated meadow plots. The foliage insect populations were significantly lower on the treated aspen plots but were significantly higher on the treated meadow plots. The aquatic invertebrates were not affected by the treatments. Bird populations ware lower in the treated area during the nesting season …

The Chemistry Of Dehydronaphthalene, Richard Harold Hales

Theses and Dissertations

The reaction of monohalonaphthalenes with potassium t-butoxide in a t-butyl alcohol-dimethyl sulfoxide (DMSO) mixture has been studied. The 1-bromonaphthalene reaction was extensively studied. Fifteen identifiable products were observed and conditions were found where the desired products, 1- and 2-t-butyl naphthyl ethers (V and VI) were formed in maximum yield, and their decomposition products, 1- and 2-naphthol (XIV and XV), were formed in minimum yield. The mole percent ratio of 1-substituted products (V and XIV) to 2-substituted products (VI and XV) was found under standardized conditions to be 0.35 ± 0.03 in every case when the halogen was I, Br and …

A Comparative Study: Existing Vocational Trade And Industrial Teacher Certification Requirements And Practices Recommended By Authorities In The Field, Erwin Geigle

Theses and Dissertations

This thesis was a comparative study of vocational trade and industrial teacher certification requirements as they exist in the various states and practices recommended by authorities in the field.

The author composed a questionnaire including relevant aspects of vocational trade and industrial teacher certification requirements. The questionnaires sent to state directors of vocational trade and industrial education asked factual information of teacher certification in their respective states and also asked their opinions concerning vocational trade and industrial teacher certification requirements. The questionnaires sent to industrial teacher education department chairmen asked only their opinions concerning vocational T & I teacher certification …

A Three State Markov Model For Paired Associate Learning, Thomas R. Linscheid

Theses and Dissertations

The continuity-noncontinuity issue remains a focus for both the theoretical and experimental inquiry into the fundamental nature of the learning process. Although experimental studies of paired-associate learning have often disclosed continuities, mathematical models incorporating all-or-none processes have generally fit the data quite well. The most basic of these is the one-element model proposed by Bower in 1961. The model assumes only two states, a learned state and an unlearned state. Transitions from the unlearned to the learned state occur with a fixed probability which is constant across trials. Extensions and modifications of the Bower model have consisted basically of the …

Input Order, Subjective Organization And Free Recall, John Earle Langhorne Jr.

Theses and Dissertations

Considerable current research on memory has focused on the organization of subjects' recall. When the organizational characteristics of a stimulus list are not apparent, subjects will uniquely organize their outputs to facilitate recall. Both Tulving and Bousfield have developed statistics to measure this subjective organization in multitrial free recall experiments. These two measures have been shown to intercorrelate very highly. Substantial correlations are reported between these measures and recall.

During a previous study on subjective organization the recall data from each subject on each trial were scored in such a way that the ordinal position in recall of each word …

An Analysis Of Parental Attitude In Regard To Physical Education And Athletics In The Harvey High School, Gordon R. Baumgartner

Theses and Dissertations

The purpose of this study was to investigate parental attitude in regard to several areas in physical education and athletics in the Harvey High School.

The questionnaire-opinionnaire technique was used for obtaining the data. Copies of the opinionnaire were mailed to l£0 parents, and a return of 111 questionnaires, or 74 percent, was received.

A brief summary of the findings show:

1. Parents believed an adequate job of teaching physical education is being done today.

2. Parents believed their children are receiving a better training in physical education now than when the respondents attended school.

3. Physical education was rated …

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 …

A Survey Of Selected Business Firms In Willmar, Minnesota, To Determine Current Bookkeeping Practices, Rachel E. Helland

Theses and Dissertations

No abstract provided.

Preparation Of New Amino-, Thio-, And Sulfonyladamantane Derivatives, Joseph Craig Argyle

Theses and Dissertations

Various synthetic schemes were used to prepare a number of new amino-thio- and sulfonyladamantane compounds. By a nucleophilic substitution on 1-bromoadamantane, 1-(p-nitrophenylthio)adamantane was prepared from p-nitrothiophenol; the amino- and sulfonyl- derivatives of this compound were also prepared. Silver tosylate was used to generate the 1-adamantyl carbonium ion from 1-bromoadamantane in a synthetically useful procedure for preparing 1-adamantylamides from nitriles. Three 1-(1-adamantylcarbinyl)-2,5-dialkylpyrroles were prepared by Knorr-Paal reactions and reduced to the corresponding pyrrolidines. Thio- and aminomethyl 1-adamantyl ketones were prepared from methyl and bromomethyl 1-adamantyl ketones, respectively. Aliphatic and aromatic oxiranes were reacted with 1-aminoadamantane in a bomb at elevated temperatures …

The Reactivity And Selectivity Of The Reaction Of Sulfur Trioxide And Bromobenzene, Sullivan E. Blau

Theses and Dissertations

The sulfonation of bromobenzene with sulfur trioxide in liquid sulfur dioxide at -12 to -13° C. was studied to determine its relative reactivity. The relative rate constant ratio, kbenzene/kbromobenzene, was found to be 28.6 in a competitive reaction between benzene and bromobenzene. The isomer distribution was found to be 0.15 ± 0.02% for the meta, 0.91 ± 0.04% for the ortho and 98.93 ± 0.14% for the para isomers. The partial rate factors were calculated to be pf= 0.208, of= 0.0096 and mf = 0.00018. The relative rate data exhibited a distinctive behaviour previously noted in related systems, possibly due …

High Pressure Spectral Chemistry Of Selected Organic Compounds, Frank William Linsley

Theses and Dissertations

The series of compounds indicated by the formular C_6H_5-(CH=CH)n-C_6H_5 change in color from white (colorless) to yellow to orange to red to deep red as n increases from 1 to 12. Stilbene is the first compound of this series (n=1). Under pressure, exerted by a diamond anvil press, stilbene can be seen to change color from white to yellow to red as increasing pressure is applied. Similar color changes are observed for the compounds where n=2,3, and 4 when subjected to similar pressure. This study records and reports the spectra versus pressure for these compounds.

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 …

The Synthesis And Properties Of New Potentially Chemotheraputic [Sic] Pteridine Derivatives, Walter Wesley Parish

Theses and Dissertations

A new general synthetic method for the preparation of 6-thiopteridines has been developed. The method involves the addition of thiols to intermediate pyrimidine nitrones formed in situ by the reaction of 4-amino-5-nitrosopyrimidines with pyridinium-activated acetonitriles, acetates, acetophenones, and other methylketones. Ca. forty new pteridines were prepared by this method. The preparation of six new 6-pteridinyl ketones, two new 6- pteridinyl ketone thiosemicarbazones, and two new 6-sulfonylpteridines and their 4-acetamido derivatives is also reported. 4-Acetamido-2- amino-7-phenylpteridine 5-oxide was prepared by the reaction of 2- amino-4,6-diacetamido-5-nitrosopyrimidine with either phenylsulfonyl-acetophenone or phenacylpyridinium bromide. Evidence relating to the structure of the acylated 4-amino-5- nitrosopyrimidines …

Construction Technology As A Basis For Content In Industrial Arts, Follard E. Thurn

Theses and Dissertations

No abstract provided.

A Feasibility Study Of The Application Of Bondgraph Modeling And Computerized Nonlinear Model Parameter Identification Techniques To The Cardiovascular System, Randall L. Taylor

Theses and Dissertations

Recent years have witnessed an increasing trend for people in the medical and engineering professions to couple their talents in a more united effort to better understand the functioning of the human body. This union of technologies has meant the introduction of new viewpoints and techniques in the field of physiological research. The engineers' basic tool, mathematical modeling, has perhaps been one of the most noticeable additions. There has been a significant amount of work done in recent years along these lines of deriving mathematical models to express the functioning of a subsystem of the body, and then, using analog, …

An Investigation Of A Computer Technique For Determining The Characteristic Parameters Of A Viscoelastic Model With Hysteresis Effects From Transient Experimental Data, Stephen Jack Clark

Theses and Dissertations

The object of this work was to develop a computer technique for determining the characteristic parameters of spring-mass system with hysteresis effects from transient experimental data. The technique was intended to be utilized to determine the parameters of models of systems where complex geometry and rate dependent properties would make a determination of the model parameters most difficult, and where the parameters typically obtained from static test would not characterize the rate dependent properties accurately.

A Follow-Up Study Of The 1967, 1968, And 1969 Clerical-Secretarial Graduates Of Lake Region Junior College, Devils Lake, North Dakota, With Implications For Curriculum Revision, James E. Labarre

Theses and Dissertations

The purpose of this study was to determine the strengths and weaknesses of the present Clerical-Secretarial program taught at Lake Region Junior College, Devils Lake, North Dakota.

A questionnaire-opinionnaire was mailed to the 1967, 1968, and 1969 Clerical-Secretarial graduates. Returns were received from 78.5 percent of the graduates.

The returns showed that two-thirds of the respondents were employed full time. The majority of the respondents were employed as secretaries, general clerical workers, bookkeepers, and tank tellers. The balance of the respondents were employed in numerous other occupations. Almost two-thirds of the respondents left their first job within twelve months of …

A Method For Evaluating Cardiovascular Conditioning In Swimmers, Paul M. Cerio

Theses and Dissertations

The purpose of this study was to determine if cardiovascular conditioning did take place during the swimmer's training season.This study was also concerned with developing an index for each swimmer. This index would give a coach a convenient and practical method of establishing the cardiovascular condition of his swimmers for a particular segment of the training season.

The subjects used in this study were two male Caucasians with previous competitive swimming experience. The subjects were tested twice a week during three predetermined segments of the training season. They were tested during the first ten minutes of the regular practice session. …

A Study Of Reliability Of The Aahper Youth Fitness Test As Applied To Male Visually Handicapped Students At The North Dakota State School For The Blind, David P. Shyiak

Theses and Dissertations

The lack of physical fitness exhibited by American youth as compared to European youth has prompted the development of the AAHPER Youth Fitness Test to assay the physical fitness of children in the public schools. This test is being administered to thousands of public school children every year. Today, over sixty percent of the visually handicapped students are receiving their education in the schools of the communities where they live. The AAHPER Youth Fitness Test has been found to be reliable when administered to normal children. This study was formulated to determine the reliability of the AAHPER Youth Fitness Test …

Articulation Of Shorthand And Typewriting In Four-Year Colleges Offering A Business Teacher Education Major In North Dakota, South Dakota And Montana, Darrell Morrison

Theses and Dissertations

This independent study was conducted through the perusal of the college catalogs for each college and an analysis of the survey instruments that were sent to all four-year colleges in North Dakota, South Dakota, and Montana that offer a business teacher education major.

Findings: 1. The average number of students in the sixteen schools that are majoring in business teacher education is 141.

2. Thirteen of the sixteen schools offer credit for the beginning course in shorthand, and twelve offer credit for the beginning course in typewriting.

3. As a general rule, the amount of credit granted for each course …

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 …

Donor Properties Of Dimethylsulfoniumcyclopentadienylide And Tetramethylenesulfoniumcyclopentadienylide In Metal Complexes ; Part Ii. The Attempted Preparation Of Boron Tricyanide, Gary Scott Barney

Theses and Dissertations

Part I.--Complexes of dimethylsulfoniumcyclopentadientylide and tetramethylenesulfoniumcyclopentadienylide with metal ions were studied in order to determine the coordination site on the ylids. Infrared spectra indicate that the ylids are coordinated through the cyclopentadienyl ring in all complexes except for the Hg(CN)2 complexes. Coordination-of the HgI2, CdI2, ZnCl2, and AgNO3 complexes is through the number one position on the ring as suggested by NMR data. Infrared and NMR data strongly indicate that the ylids in the Hg(CN)2 complexes are coordinated through sulfur. Part II.--The only method given in the chemical literature for the preparation of boron tricyanide could not be duplicated in …

The Introduction Of Asian History Into Utah High Schools, Carol M. Hinckley

Theses and Dissertations

Asian history is increasingly recognized by experts as a necessary part of a high school student's world history experience. Asia is important for them to study because of its great intrinsic value and because of Asia's relationship with the United States in the future. To date, however, in Utah there are no separate Asian history courses being taught and few teachers include Asia as an important part of the world history course.

Schools in other parts of the nation have instituted practical Asian history courses and Utah can follow their example. Teachers should consider how much time can be devoted …

A Comparative Study : Existing Vocational Trade And Industrial Teacher Certification Requirements And Practices Recommended By Authorities In The Field, Erwin K. Geigle

Theses and Dissertations

No abstract provided.

Cultural Background Characteristics Of Selected Graduate Students In Business Education And Education At The University Of North Dakota, Patricia Ann Fitzgerald

Theses and Dissertations

No abstract provided.