Digital Commons Network^™

Stomach Capacity, Digestion Rate, And 24-Hour Consumption Rate For The Bear Lake Sculpin (Cottus Extensus), Joseph H. Williamson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A curvilinear regression model was used to determine an expected stomach capacity for any size Bear Lake sculpin with a standard length between 4-9.5 centimeters. Stomach contents were then expressed as a percent fullness and the change in percent fullness with time intervals was used to compute an instantaneous digestion rate. The instantaneous consumption rate was computed by the formula C=log P₁ - log P₀ +d, where C = instantaneous consumption rate. The amount of food consumed during a time interval was computed from the formula I_t=C_tS_t, where I_t=amount of …

Magnesium Ion Inhibition Of Calcium Carbonate Precipitation And Its Relation To Water Quality, John J. Hassett

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of Mg⁺⁺ ion on the solubility of calcium carbonate was determined using P. K. Weyls "carbonate saturometer."

The amount of calcium carbonate precipitated or dissolved was measured for five series of waters when equilibrated with solid carbonate.

It was found that the effect of Mg⁺⁺ ion on solubility depend upon the nature of the solid phase: surface area, coprecipitated Mg⁺⁺, minerology, etc.

Pure low area calcite showed an increase in solubility which could be explained by ion-pair formation, while its other carbonates departed from this behavior.

Self Concepts Of Mexican-American And Anglo-American Head Start Children, Sue Ann Erickson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study investigated the differences in self concept of Mexican-American and Anglo-American preschool children to determine if Mexican children have less favorable self concepts when compared with Anglo children of the same age and socioeconomic background. Differences between self concepts of Mexican boys and girls and between Anglo boys and girls were investigated. A third object was to determine the extent to which children's reports of self agree with their perceptions of significant others' perceptions of them.

Twenty-two Mexican-American and 20 Anglo-American Head Start children were given the Brown-IDS Self Concept Referents Test. This test was specially designed for use …

Reading Abilities Of Vocational Trade And Industrial Education Students In Granite School District Relative To Readability Level Of Textbooks, William E. Mckell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The reading abilities of trade and industrial education students enrolled in the six trade and industrial education courses of automotive mechanics, building construction, drafting, electronics, machine shop, and welding in the six high schools of Granite School District were studied in relation to the rated readability of basic textbooks used in those courses. Additional relationships were studied between student reading abilities and intelligence, between course grades and intelligence, and between course grades and reading abilities.

The mean reading ability of the 388 trade and industrial education students included in the study assessed by administering the California Reading Test for grades …

An Empirical Analysis Of Demand Interrelationships: An Application To Selected Agricultural Commodities In Venezuela, Hector Luis Mata Brito

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to develop demand equations at retail for selected Venezuelan food commodities. Commodities included for analysis were rice, refined sugar, crude sugar, flour, potatoes, beef, pork, black beans, corn, and powdered milk.

The basic statistical technique employed in the analysis was least squares multiple regression. Although several mathematical forms for these demand equations were evaluated, a log-log transform was found to be most useful. Independent variables included own price, prices of substitutes and complements, time and income. Observations were taken from Venezuelan time series data over the period 1945-1965.

Development of these basic demand …

Estimated Response Of Sugar Beet Production To Possible Changes In Relative Profitability, Utah, 1969, Darwin C. Allred

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was designed to determine the relative profitability of sugar beet production relative to other enterprises competing with sugar beets for limited resources and to estimate a production response of sugar beet growers in the beet producing areas of Utah.

Sugar beet producing areas in Utah were delineated. Representative farm units for beef-crop, dairy-crop, and all-crop farms were synthesized. Enterprise budgets were formulated and analysed to ascertain the relative profitableness of sugar beets compared to competing enterprises in each production area.

Linear programming was used to develop the supply response portion of this study. An aggregated supply curve was …

An Evaluation Of The Collegiate Experience Of The Usu Student, Mark G. Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The American College Testing Program's Institutional Self-Study Survey was used in this study to consider USU students' goals, achievements, and evaluations of their collegiate experience. Goals included were students' educational majors, vocational plans, final college degree sought, and the relative importance attached to attaining Vocational, Academic, Social, and Non-Conventional goals. Achievements studied were both intellectual and nonacademic out-of-class accomplishments, and students' perceived progress in achieving Intellectual-Humanistic, Group-Welfare, Scientific-Independent, and Practical-status outcomes of their collegiate experience. Student evaluations of instructors, college services, selected policies, practices, facilities, and required courses were also studied. National normative data were compared with USU data in …

The Establishment And Comparison Of Prediction Equations For Determining Minimum Gpa's In Applied Arts Programs At Dixie College, Robert L. Cobb

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was an attempt to establish and compare prediction equations for determining a minimum GPA of 2.00 in the Applied Arts programs at Dixie College. It also attempted to compare the derived predict ion equations used to determine mini mum GPA 1 s in both the Academic Arts and Applied Arts Divisions. The study compared the derived prediction equations used to determine minimum GPA's for each vocational program in the Applied Arts Division. The study attempted to determine and compare the most reliable predictor in the Academic Arts Division, total Applied Arts Division, and each vocational program in the …

Areal And Temporal Variations In Developmental Phases Of Syringa Vulgaris L. Throughout The Western United States, Joseph Michael Caprio

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper presents the results of the analysis of 10 years of information 1957-1966 on three phases-- begin, peak and end bloom-- of the purple common lilac (Syringa vulgaris L.) using data recorded at approximately 1,000 locations throughout the Western Region of the United States.

The pattern of geographical advance of the various bloom phases is determined by both a manual mapping procedure developed by the author and by standard statistical methods. Manually drawn isophanes for the various elevations for begin bloom phase are based entirely upon the first 5 years of record, 1957-1961. A Zones of Adjustment map to …

American History And Teaching Critical Thinking, James M. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of teaching critical thinking as part of a continuous progress packet in American history was studied at Cedar High School during the 1969-70 school year. An experimental group using the critical thinking packet was compared with a control group that used a continuous progress packet that taught only American history.

The dependent variables for the study were the STEP (Sequential Test of Educational Progress), Social Studies portion, and the Watson-Glaser Critical Thinking Appraisal. No statistically significant differences were found between the groups in either American history or critical thinking.

Differences in critical thinking ability, though not significant statistically, …

The Public And Private Business Profile Of Cache County, Reed E. Williams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Economic development that increases per capita income and creates additional jobs through expansion of present businesses and/or introduction of new businesses and business income is the goal of planners in Cache, Rich , and Box Elder Counties . To help with this goal a Northern Utah study group was organized to gather data on quality, quantity, and use of human, social, physical, and economic resources. This thesis is part of the main study and only includes Cache County.

Input-output models are effective predicting tools. These tools are used in this analysis . To predict different output changes in the economy, …

The Development Of An Educational Program To Meet The Needs Of The Adult Government Employee At Hill Air Force Base, Utah, Dix W. Cloward

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose

The purpose of this study was two-fold: (1) to determine the educational needs of the personnel of the five directorates at Hill Air Force Base; and, (2) to design an educational program to meet those needs.

Procedure

This study consisted of three phases:

Phase One. This phase consisted of identifying the behavioral items that were used in developing the Q-Sort instrument. This was accomplished by a review of job requirement data, by an examination of Project Hy Production, and by personal interviews of the Air Base educational specialists.

Phase Two. This phase consisted of the development of a Q-Sort …

Drift Of Oligophlebodes Sigma And Baetis Bicaudatus In A Mountain Stream, William Dean Pearson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this study was to clarify the relationships between drift rates, population density, production rates, key environmental factors, and movements of adults within two populations of stream insects (a caddisfly--Oligophlebodes sigma and a mayfly--Baetis bicaudatus).

Samples of benthic invertebrates (424 total) were collected every 28 days at four stations on Temple Fork of the Logan River, Utah, from October, 1967 to September, 1969. Samples of drift invertebrates (181 total) were collected every 14 days at three stations on Temple Fork during the same period. During summer months (June-September) a day and a night drift sample …

Model For Bathtub-Shaped Hazard Rate: Monte Carlo Study, Glen S. Leithead

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A new model developed for the entire bathtub-shaped hazard rate curve has been evaluated as to its usefulness as a method of reliability estimation. The model is of the form:

F(t) = 1 - exp - (ϴ₁t^L + ϴ₂t + ϴ₃t^M)

where "L" and "M" were assumed known.

The estimate of reliability obtained from the new model was compared with the traditional restricted sample estimate for four different time intervals and was found to have less bias and variance for all time points.

This was a monte carlo study and the …

A Report On The Statistical Properties Of The Coefficient Of Variation And Some Applications, Howard P. Irvin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Examples from four disciplines were used to introduce the coefficient of variation which was considered to have considerable usage and application in solving Quality Control and Reliability problems.

The statistical properties were found in the statistical literature and are presented, namely, the mean and the variance of the coefficient of variation. The cumulative probability function was determined by two approximate methods and by using the noncentral t distribution. A graphical method to determine approximate confidence intervals and a method to determine if the coefficients of variation from two samples were significantly different from each other are also provided (with examples). …

A Survey In Mean Value Theorems, David A. Neuser

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A variety of new mean value theorems are presented along with interesting proofs and generalizations of the standard theorems.

Three proofs are given for the ordinary Mean Value Theorem for derivatives, the third of which is interesting in that it is independent of of Rolle's Theorem. The Second Mean Value Theorem for derivatives is generalized, with the use of determinants, to three functions and also generalized in terms of n-th order derivatives.

Observing that under certain conditions the tangent line to the curve of a differentiable function passes through the initial point, we find a new type of mean value …

A Fortran List Processor (Flip), Karl A. Fugal

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A series of Basic Assembler Language subroutines were developed and made available to the FORTRAN IV language processor which makes list processing possible in a flexible and easily understood way.

The subroutine will create and maintain list structures in the computer's core storage. The subroutines are sufficiently general to permit FORTRAN programmers to tailor list processing routines to their own individual requirements. List structure sizes are limited only by the amount of core storage available.

Cation Exchange And Transport In Soil Columns Undergoing Miscible Displacement, Sung-Ho Lai

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A mathematical model was developed to predict the exchange of one cation by another in a soil column undergoing one dimensional cation solution displacement under steady state flow conditions. The model allowed prediction of both the solution and exchanger phase concentration of the cation in question.

The model consists of a material balance equation which is a parabolic type partial differential equation. The assumption was made that equilibrium was reached instantaneously between the cations in the solution phase and the exchanger phase. This assumption reduced the material balance equation to a form that allowed numerical solution providing the data concerning …

The Effect Of Chemical Competition On Thermodynamics Of Bacterial Adsorption, Deorao R. Khairnar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objective of this investigation was to study the effect of chemical competition on thermodynamics of bacterial adsorption. This was done using an experimental system consisting of Mendon silt loam soil as the adsorbent, Staphylococcus aureus as a common adsorbate and sodium chloride (NaCl), sodium lauryl sulfate (SLS), and peptone as competitive adsorbates.

The bacterial adsorption on soil both with and without chemical competition followed Langmuir type isotherms. From the equilibrium data, thermodynamic functions such as free energy, ΔF°, enthalpy, ΔH°, and entropy, ΔS°, were calculated. Observed positive ΔH° values indicated that the bacterial uptake in both noncompetitive and competitive …

A General Study Of Closed Circuit Television Utilization In Selected Courses At Utah State University, Ted J. Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis presents an evaluation of instructional television as used in four courses at Utah State University. The study is divided into four parts: first, student attitudes and reactions; second, faculty attitudes and reactions; third, the costs involved for the individual faculty members concerned, the academic department, the Radio-Television department, and the University as a whole; and fourth, recommendations concerning the future use of instructional television at Utah State University.

The four courses involved in this study were basic introductory courses in Political Science, English, Sociology, and Music.

The investigator found that student attitudes and reactions varied with each course. …

Transpiration And Dry Matter Response To Atmospheric Humidity, Matric Suction, And Fertility, Gordon Edgar Warrington

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Growth chamber studies showed that a relationship exists between transpiration and dry matter production of spring wheat (Tritiaum Aestivum L. var . Thatcher). A temperature of 27 C for a 16-hour day,and 21 C at night were used throughout the experiment. Relative humidities (RH) of 12, 25, 71, and 83 percent and matric suctions of 1, 3, and 9 bars were used a l ong with six fertility levels and a 20-day growing period. An equation was developed from previous equations by De Wit and Arkley to describe the transpiration ratio (Tr = mass of water transpired/mass of dry …

A Study Of Vocational Education In A Comprehensive High School With Recommendations For Vocational Education And Educational Specifications For Industrial Education At East High School, Salt Lake City, Utah, Frank B. Barrows

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study resulted from the selection of East High School in Salt Lake City to participate in a State Sponsored "comprehensive high school" project entitled "Project Success." The primary emphasis of the project was to encourage the development of vocational education as part of the high school curriculum.

The purpose of this study was to assist the Salt Lake City School District and East High School in the planning of vocational education programs and facilities by providing a rationale for vocational education within a comprehensive high school, making specific recommendations for vocational education programs, and by writing educational specifications for …

A Kinetic Approach To The Inactivation Of Zinc By Various Soil Constituents, Shingara S. Sandhu

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The adsorption reaction of zinc onto prochlorite, pyroxene, and biotite minerals, from dilute solution (water) was studied under isothermal conditions by agitated nonflow experiment method. The equilibrium concentration of zinc in the solution was determined both by radioactive tracer technique and adsorption spectrophotometer methods. The data were collected at three temperatures.

The data were treated by the equation:

∂θ/∂t = k₁(1-θ)C - k_-1θ

where θ is the fraction of total surface coverage and C is the equilibrium concentration of zinc in solution, k₁ and k_-1 are the rate constants for the adsorption and reverse …

A Forecast Of Iranian Demand For Agricultural Food Products, Ivan F. Beutler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Domestic demand for Iranian agricultural food commodities was projected for 1970, 1975 and 1980. Demand for particular commodities was projected separately for Tehran (the capital city), urban Iran and rural Iran.

Income and population growth were the most significant explanatory variables in this long term projection.

Two cross-sectional family budget surveys, taken six years apart, provided consumption data for Tehran and urban Iran. A series of family budget studies provided Engel curve data for rural Iran.

The income effect was estimated for each food item by least squares regression analysis. The resulting income elasticities were found to be significantly different …

The Development Of A Prediction System For The Occurrence Of Law Violations On The Ogden Ranger District, Weber County, Cache National Forest, Utah, John Henry Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to develop a prediction system for the occurrence of law violations on the Ogden Ranger District, Weber County, Cache National Forest, Utah, whereby the existing manpower and equipment may be used as effectively as possible.

In an attempt to develop the prediction system, 13 variables were chosen that were felt to be related to the occurrence of law violations. These variables consisted on nine weather variables and four use related variables, Of the original 13 variables, 12 variables were significant. The most significant variables that accounted for the greatest portion of the variability …

The Photochemical Reduction Of Octacyanomolybdate(V) Ion In Aqueous Solutions, Gordon W. Gray

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The photochemical reactions occurring in aqueous solutions of octacyanomolybdate(V) ion, Mo(CN)₈^3-, during irradiation with light of 365 and 436 nm wavelengths were studied. The quantum yields and reaction products were determined for neutral, unbuffered solutions as well as solutions buffered at pH 4.0, 7.0, and 9.0.

The results of these studies showed that the Mo(CN)₈^3- ion is rapidly reduced by light to a Mo(IV) complex. In neutral or acidic media, the initial photoreduction product was found to be the red heptacyanoaquomolybdate(IV) ion, Mo(CN)₇(H₂O)^3-. Photolysis in basic solution gave the …

Infinite Abelian Groups, Joaquin Pascual

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

When the theory of groups was first introduced, the attention was on finite groups. Now, the infinite abelian groups have some into their own. the results obtained in infinite abelian groups are very interesting and penetrating in other branches of Mathematics. For example, every theorem that is stated in this paper may be generalized for modules over principal ideal domains and applied to the study of linear transformations.

This paper presents the most important results in infinite abelian groups following the exposition given by J. Rotman in his book, Theory of Groups: An Introduction. Also, some of the exercises given …

Solutions Of The Problem Of Finding Confidence Intervals For The Two Normal Population With Unequal Variances, Ing-Haur Liu

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Comparison of the means of two normal populations is a simpler problem when the variance (if unknown) are assumed to be equal than it is when they are not equal. The main concern of this report is the latter case also called the Behrens [4] - Fisher [5] problem.

In this report the solutions proposed by Behrens-Fisher, Scheffe [10], Welch [12], Banerjee [3] and Hajek [8], will be described and compared. To this problem Scheffe proposed a solution which has the advantage that no special table is necessary for its use, since the variate has an exact "Student's t" distribution. …

Bayesian Estimate Of System Reliability, Naresh Shah

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

A Bayesian estimate of reliability for each component in the system of n-components, each exponentially distributed, is developed which utilizes the basic notion of loss in estimation theory. Here we assume that each component is independently dis­tributed. In reliability estimation, the loss associated with over­estimation is usually greater than the loss associated with under­estimation; and hence loss function can be a very useful tool. The prior distribution and loss function of reliability considered in this paper are flexible to be compatible with other situations in which reliability estimates are required. When the loss function is symmetric and no prior information …

A Graduate Recital Report, Judith Lynn Gailey

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The graduate recital provided an opportunity to reach a new level of performance, a deeper understanding and appreciation of the arts, and a wider knowledge of all aspects affecting one's proficiency as a musician and teacher.

The literature was selected to be representative of the various styles and periods and to feature the special characteristics of the solo instrument, The program for this recital was chosen and approved according to the established tradition of the department of music.

The study and preparation necessary for the performance of these works provided a valuable learning experience that constitutes the most important part …