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The Role Of Verbal Incentives And Researcher Attitude In The Motivation Of Preschool Children From Different Socioeconomic Levels, Carol Hunter Byrnes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The motivating effects of positive and negative verbal reinforcement and researcher attitude on the performance of preschool children were studied in relation to socioeconomic level. Forty children from the Utah State University Child Development Laboratory and forty from Head Start classrooms in northern Utah served as subjects. Each child performed the simple task of placing pegs in a pegboard during a 60- second time interval; once under conditions of positive verbal reinforcement and positive attitude, and again, under one of four experimental conditions: control; positive reinforcement/positive attitude; negative reinforcement/positive attitude; or negative reinforcement/ negative attitude.

The findings seemed to indicate …

Visual Perception In Pre-School Children, Howard Mark Bardwell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was undertaken to determine if sessions in discrimination tasks with the aid of instructional cues would influence the visual perceptual abilities of pre-school children. The research was conducted in the Child Development Laboratories at Utah State University. Twenty children were used--ten in the experimental group and ten in the control group. The ten children in the experimental group were given training in performing tasks that required ability in visual perception. The ten children in the control group received no such training.

It was found that the ten children who received the individualized instruction scored significantly higher on post-test …

The Young Child's Concept Of Human Conception And Birth, Julie Ann Broberg Puzey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The views held by children about the ere at ion and birth of babies are of importance in child development and developmental psychology. However, most of the research done in this area has been of a theoretical nature rather than empirical. The research shows controversy in the child's concept of human conception and birth, and because of this controversy a study was deemed necessary to find out more of what the young child's concept is of human conception and birth.

The purpose of this study, therefore, was to attempt to determine the extent of children's awareness of the nature of …

Children's Awareness Of Environmental Pollution, Carol A. Darling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to determine children's awareness of environmental pollution and the effect of environmental education on the awareness of preschool children.

Data for this study were collected by individually interviewing 20 preschool, 20 first grade and 20 third grade children. These 60 children were presented 15 colored slides and 9 words denoting various types of pollution and environmental symbols and slogans. The slides varied from litter on a beach, chimneys emitting black smoke, and polluted water to such environmental symbols as Smokey Bear, Johnny Horizon, and Woodsy Owl. In addition, the environmental symbols were also presented …

Attitudes Toward And The Consequences Of Infant Oral Pacification, Faye M. Preece

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was focused in two specific objectives: (1) to determine attitudes of professionals, namely pediatricians, general practitioners, and orthodontists toward the use of the oral pacifier; and (2) to determine the attitudes of primiparous mothers toward the use of the pacifier.

The mothers were chosen from the r1cKay-Dee Hospital in Oqden, Utah. They were divided into three groups: (1) 17 mothers with three-month- old babies, (2) 15 mothers with six-month-old babies, and (3 ) 15 mothers with nine-month-old babies, for a total of 47 mothers.

The professionals were divided into three groups: pediatricians, 10 general practitioners, …

Development Of An Interpretive Document For The Bear River Migratory Bird Refuge, William R. Burbridge

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since its inception, the National Wildlife Refuge System has been administered for management and restoration of habitat essential to the propagation and welfare of resident and wintering wildlife species. Acquisition of additional System units has been primarily directed to the benefit of the migratory bird resource. As of July 1, 1968 about 250 of the 321 refuge units were managed for the waterfowl resource (U. S. Department of Interior, 1968a). However, this growth of the System has been accompanied by an increase in recreational use of the refuges. In 1962, Public Law 87-714, the Refuge Recreation Act, was passed to …

Stratigraphy And Environmental Analysis Of The Swan Peak Formation And Eureka Quartzite, Northern Utah, George Gregory Francis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Swan Peak Formation in north-central Utah thickens westward, from zero feet near Logan to 687 feet in the Promontory Range. The unit is subdivided into three distinct members: 1) A lower member of interbedded shales, limestones, and quartzites; 2) A middle member of interbedded shales and brown quartzites; and 3) An upper member of white quartzites. The Swan Peak thins southward toward the east-west-trending Tooele Arch in the area of study; this thinning probably reflects both lesser deposition and greater subsequent erosion there than elsewhere. The lower member in northern Utah probably was deposited in shallow-shelf and/or traditional shoreface-shelf …

Essential Tyrosine Residues In Calf Liver Uridine Diphosphoglucose Pyrophosphorylase, E.C. 2.7.7.9., Robert Carl Bachmann

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The catalytic necessity of tyrosine residues in uridine diphospho- glucose pyrophosphorylase [E.C. 2.7.7.9] was investigated. Chemical modification of the pyrophosphorylase by N-acetylimidazole indicated that tyrosine residues were essential for activity. Approximately 23 of 112 tyrosines per molecule of 475,000 Daltons could be 0-acetylated. Solvent perturbation difference spectroscopy supported this number of exposed tyrosine side chains and in conjunction with chemical modification indicated that at least 11 to 12 tyrosyl residues per protein molecule are fully exposed. it her subst rate, uridine t riphosphate or uridine diphosphoglucose, afforded significant protection against inactivation by N-acetylimidazole.

The significance of these tyrosine residues is …

Study Of Air Cell Migration And The Effect Of Whipping Temperature On The Overrun, Body And Storage Stability Of A Dairy-Based Frozen Whipped Topping, William J. Locker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A dairy-based whipped topping consisting of 22.0 percent milk fat, 7.5 percent milk solids-not-fat, 12.0 percent sucrose, 10.0 percent corn syrup solids, 0.60 percent gum arabic, 0.06 percent carrageenin, 0.19 percent polyoxyethylene sorbitan rnonostearate, 0.19 percent polyoxythylene sorbitan tristearate, and 0.12 percent sodium stearoyl-2-lactylate was developed that would withstand the rigors of frozen storage. The best products were obtained when the topping was whipped on a Creamery Package 3M-30 continuous type ice cream freezer. Toppings whipped in the laboratory at temperatures higher or lower than -2.2 to -1.0 centigrade were weak and slightly wet. After 18 days frozen storage the …

Model For Predicting Simultaneous Distribution Of Salt And Water In Soils, Satish C. Gupta

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Knowledge of water and salt movement in soils is necessary for development of a management scheme for controlling the quality of irrigation return flow. A computer model was developed to predict the distribution of water and salts in the root zone under varying initial and boundary conditions. The model consists of water flow and salt flow sub-models. The water flow sub-model considers the numerical approximation of the general water flow equation with modification for water loss by evapotranspiration (and thus root extraction). The salt flow sub-model considers the mass flow of salts, chemical exchange, precipitation or dissolution of CaCO_{3 …}

Simulation Of The Dynamics Of Erodible Streams, Kousoum S. Sakhan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The movement of translatory waves over an erodible stream has a critical influence on the time of rise of the hydrograph which, in turn, affects the stability of the stream channel. In the present study, the movement of these flood waves is described by the one-dimensional equations of continuity and motion which are obtained by the space integration of the three-dimensional equation of continuity and Reynolds equations. The flow of suspended sediment is described by a one-dimensional dispersion equation which is derived from a three-dimensional equation of conservation of solid mass in the flow. With some modifications the one-dimensional dispersion …

Tissue Mineral Imbalances In Cattle With Brisket Disease, Patricia H. Field

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Twenty four cattle, six each of healthy cows and calves, and cows and calves with brisket disease, were obtained, examined and slaughtered. The concentrations of calcium, chloride, cobalt, copper, iron, magnesium, molybdenum, phosphorus, potassium, sodium and zinc; and percent absolute dry matter and percent ash were determined in tissues selected from the following: cardiac, hepatic, renal, osseous, whole blood and blood serum. In addition, certain physical and biological parameters were recorded for each animal. The results were analyzed as a 2 x 2 factorial, segregating the effects of age and brisket disease, and the age-disease interaction.

The following statistically significant …

A Follow-Up Of Decision Changes From The Act Profile For Freshmen At Usu, Brent M. Hinze

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Decision making and decision changes were studied in late adolescents regarding post-high school choices. A branching questionnaire was constructed and mailed to 1239 late adolescents who during the preceding year had indicated on the American College Test (ACT) that Utah State University (USU) was their first choice for college attendance, but whose names did not appear on the USU Registrar's list of enrolled freshmen, Fall 1969. 62% of the questionnaires were returned. Questions were asked concerning post-high school decision making and decision change:

1. What alternatives to attendance at USU were chosen?
2. Was the alternative chosen college-related or was the change …

An Analysis Of Stock Densities And Harvest Of The Cutthroat Trout Of The Snake River, Teton County, Wyoming, John W. Kiefling

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An intensive creel census and marking program was conducted in 1969 and 1970 to make possible population estimates and estimates of harvest of cutthroat trout in the Snake River in Teton County, Wyoming. Stock density determinations made in one of the five study areas provided an estimate of 400 and 992 cutthroat trout, eight inches or more in length, per mile of stream in 1969 and 1970 respectively.

Harvest data provide an estimate of 5,207 and 5,903 cutthroat trout harvested in 1969 and 1970 respectively. The harvest estimates obtained in this study are not comparable to those made in 1967 …

Reproduction And Hematology Of The Cache Elk Herd, Thomas B. Follis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The initial three years of a 10-year reproductive study of elk involved three major phases. A fourth was added because of convenience. Objective 1 was to ascertain pregnancy rates in yearling and mature elk by rectal palpation, associate these rates with subsequent fall cow/calf ratios, and to test concurrently an ultrasonic fetal heart detector. Rectally observed anatomical changes in gravid uteri of cattle were directly applicable to elk. Ultrasonic detections of pregnancies in elk and deer were unsuccessful.

Pregnancy rates in the 1969-70 winter of 100 and 0 percent, respectively, for 19 adult and five yearling elk were associated with …

Population Biology Of The Black-Tailed Jackrabbit (Lepus Californicus) In Northern Utah, L. Charles Stoddart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Population biology of the black-tailed jackrabbit population on a 250-square-mile area in Curlew Valley, northern Utah, was studied from 1962-70. During this period the fall population density index increased from 40.0 in 1962, to 60.6 in 1963, decreased progressively to a low of 21.2 in 1967, then increased the following 3 years to a high of 185.0 in 1970.

Breeding was synchronous with four conception periods each year; in some years a fifth conception period was evident. The first conception period occurred about the last half of January; other periods followed at 40-day intervals indicating a 40-day gestation period and …

Effect Of Bear River Storage On Water Quality In Bear Lake, Utah-Idaho, Robert L. Nunan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Since 1912 concentrations of the major anions and cations (except calcium) in Bear Lake water have shown a steady decrease which has been attributed to a dilution of Bear Lake by Bear River water, Bear Lake having been used as a reservoir for Bear River water since 1918. This study examined the changes which have occurred in Bear Lake water chemistry since 1912 and tested the validity of the dilution theory.

Simple water and salinity budgets were determined for the Bear Lake system and used to simulate the effect of Bear River storage patterns since 1918 on the concentrations of …

Stimulus Manipulation In Articulation Therapy With A Hearing Impaired Child, Walter Eugene White

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Severely hearing impaired individuals typically exhibit speech that is unintelligible and systematic instruction in speech has not effectively alleviated all of the misarticulations found in the speech of these individuals. Behavior modification is a promising development which has meaningful application to the modification of defective articulation by hearing impaired children.

The purpose of this study was to as certain the feasibility of implementing a specific program of stimulus manipulation to alter the articulation of the |TS| phoneme as uttered by one severely hearing impaired individual. The training program was structured in a sequence of four operant training conditions. Pre-training tests, …

Effects Of Land Use On Water Quality: Summit Creek, Smithfield, Utah, David W. Meyers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effects of various land uses on water quality in Summit Creek were evaluated during the period beginning March 13, 1971 and ending October 27, 1971. Potential sources of pollution investigated were: (1) septic tank use, (2) feedlot runoff, (3) urban runoff, (4) rural runoff.

Samples were collected from five sampling stations on 16 separate days during the sampling period. Analyses were performed to determine the following constituents: ammonia, nitrite, nitrate, total phosphorus, orthophosphate, coliform bacteria, chloride, suspended solids, volatile suspended solids, total carbon, organic carbon, temperature and pH.

Agricultural activities, including livestock feedlot operations, were identified as the major …

A Survey Of The Selecting And Governing Of Girls' Precision Drill Teams In Selected High Schools In Utah, Jean M. Workman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A survey was taken of selected high schools in Utah to determine their methods of selecting girls for a drill team and also how they organize and govern these groups.

There are similarities in the requirements the girls have to meet in order to be selected: age limit, grade average , skill, rhythm, coordination and flexibility. Most schools have tryouts, but not all. Those that do, have some pre-training before tryouts.

Some of the schools just use class time for practice while others include before and after school. Summer practice is held by most of the schools varying from two …

The Surface Movement Of A New S-Triazine Herbicide From Treated Cropland And Its Environmental Effects, Zeldon A. Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Six days following the application of 1.5 and 3.0 lb/A of 2- methoxy-4-sec.-butylamino-6-ethylamino-s-triazine (GS-14254) to established plots of alfalfa, water samples were collected at several distances from the plots and analyzed for herbicide residues with a Beckman DB-G grating spectrophotometer. The data indicate that GS-14254 is transported in small amounts but that the concentrations in the runoff water decline rapidly with increased distance from the treated areas and time.

S-14254 produced no visual injury symptoms of leaf chlorosis or plant stunting on alfalfa at the two rates used. However, some initial injury has been reported by other workers. …

Tertiary Igneous Rocks Of Northeastern Cache Valley, Idaho, Parry D. Willard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The tuffs and limestones of the Tertiary Salt Lake Formation in northeastern Cache Valley, Franklin County, Idaho, are intruded by basic and intermediate igneous dikes and sills. The Tertiary intrusives are exposed in an area 10 miles long and 2 miles wide between Bear River and Maple Creek in the foothills of the Bear River Range east of Preston, Idaho. They trend north-northwest. The intrusives are mostly diabase but include a small body of syenodiorite and several small andesite dikes. The intrusives seem to be emplaced along early Basin and Range faults. They are limited to the Cache Valley Member …

Geology Of The Wildcat Hills, Utah, Ronald C. Howes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Wildcat Hills, located in Curlew Valley of northwestern Utah, are composed of a series of late Tertiary extrusive and dike rocks. Five volcanic rock types have been identified: an andesite, a rhyolite, a perlite, a basalt, and a welded tuff. Hydration of obsidian pellets contained in the flows has produced some of the perlite. Diatremes in the andesite attest to the high-volatile content and the explosive extrusion of some of the lavas. A compound basalt neck indicates that basalt was extruded at the Wildcat Hills and is not an erosional remnant of the basalt flow from the base of …

Petrology Of The Ordovician Swan Peak Formation, Southeastern Idaho And North-Central Utah, Warren J. Schulingkamp Ii

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Swan Peak Formation in southeastern Idaho and north-central Utah is a sedimentary unit consisting of orthoquartzite, sandstone, siltite, shale, and limestone. The formation is divisible into three members, and the lower two members each are divisible into two informal lithologic subunits.

The lower member consists of a lower subunit of gray, calcareous sandy siltite composed of subangular to subrounded quartz grains cemented by quartz overgrowths, calcite, or iron oxide, and an upper subunit of black shale with minor interbedded silty quartzose sandstone and biomicrite (limestone).

The middle member consists of a lower subunit of interbedded pale green shale and …

The Action Of Antibiotics And Antimetabolites On The Tobacco Mosaic Virus Infection Process In Bean Leaves, Virendra Nayyar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The action of 28 antibiotics and antimetabolites at varying concentrations was studied in coincidence with the bioassay of tobacco mosaic virus on detached bean leaves by using an ultrasonic method of inoculation developed by Lamborn, Cochran and Chidester.¹ All tested chemicals were classified, in regard to the virus infection process, as inhibitory or stimulatory and their optimal concentrations in the inoculum were determined. Of the 28 antibiotics and antimetabolites studied, eight were found to stimulate while twenty inhibited TMV infection in bean leaves. From the results of these experiments, an attempt was made to characterize the nature of the …

Xenobiotic Detoxication Potential And Drug Induced Changes In Carbaryl Toxicity In The Alfalfa Leafcutter Bee, Megachile Rotundata (Febricius), Richard M. Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The alfalfa leafcutter bee, Megachile rotundata, one of the most important pollinators of alfalfa, generally became more susceptible to carbaryl as the adults aged. LD₅₀ values for carbaryl toxicity were 240,166, 109, and 51 μg carbaryl/gram for the 1, 2, 3, and 4 days-old adult male bees. For the female bees, these were 245 , 551, 289, and 262 μg car-baryl/ gram. Lipid content and microsomal enzyme activity (measured by EPN detoxication in vitro) decreased in both sexes as the bees aged.

Synergist ratios, defined as the ratio of the LD₅₀ of carbaryl alone …

Selecting The Best Linear Model From A Subset Of All Possible Models For A Given Set Of Predictors In A Multiple Linear Regression Analysis, David L. Jensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sixteen "model building" and "model selection" procedures commonly encountered in industry, all of which were initially alleged to be capable of identifying the best model from the collection of 2^k possible linear models corresponding to a given set of k predictors in a multiple linear regression analysis, were individually summarized and subsequently evaluated by considering their comparative advantages and limitations from both a theoretical and a practical standpoint. It was found that none of the proposed procedures were absolutely infallible and that several were actually unsuitable. However, it was also found that most of these techniques could still be …

A Two Sample Test Of The Reliability Performance Of Equipment Components, Miki Lynne Coleman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to develop a test which can be used to compare the reliability performances of two types of equipment components to determine whether or not the new component satisfies a given feasibility criterion.

Two types of tests were presented and compared: the fixed sample size test and the truncated sequential probability ratio test. Both of these tests involve use of a statistic which is approximately distributed as F.

This study showed that the truncated sequential probability ratio test has good potential as a means of comparing two component types to see whether or not the …

Its Reevaluation And Improvement As Related To A Profile Analysis Classification System, Mark A. Skovron

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Over the first half of the present study the Mini-Mult (MM₁), a brief form of the Minnesota Multiphasic Personality Inventory (MMPI), was compared with the standard MMPI in relation to eleven criteria classifications. These criteria were composed of the profile analysis classifications of Marks and Seeman (1963). Pearson product-moment correlations between the MM₁ and MMPI failed to reach statistical significance for any of the eleven criteria.

As based on the information gained, a correction factor was devised and added to the MM₁. Subsequently, the second half of the study involved a comparison between the HMPI …

The Effects Of A Token Economy On Epileptic Seizure Rates, Frederick Hjalmer Lindberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Past studies have shown that a relationship may exist between certain forms of epileptic seizures and specific environmental stimuli. This relationship is not well understood. The objective of this study was to assess this relationship by determining the effect of a selected token economy on seizure rates. The token economy utilized in this study may differ from token economies described in the literature as it employed certain punishers. This was done by dividing the study into three experiments.

During Experiment I three severe epileptics were exposed to a series of conditions including baseline, token economy condition and baseline. During the …