Digital Commons Network^™

An Examination Of The Inorganic Nitrogen Status Of A Soil Of The Alaskan Coastal Tundra Plain, Norton R. Munn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This experiment was designed to measure in situ concentrations of NH₄⁺ and NO₃^--N in a soil of the arctic coastal tundra plain, to determine if nitrification was taking place in this soil and to determine if the vascular plants growing in this soil could assimilate NH₄⁺-N.

The extractable NH₄⁺-N concentration was approximately 40 μg/g in the 0₁ horizon and 10 μg/g in the 0₂ horizon. The NO₃^--N concentration was approximately 5 μg/g in the 0¹ horizon and 4 μg/g in the 0_{2 …}

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 …

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 …

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 …

Individual Family Contribution To Paper Pollution In Cache County, Carroll Porter Latham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Paper waste discarded by families of five persons in Cache County was studied for two seven-day periods. The sample consisted of 19 families comprised of a father who was employed full-time, a mother, and three children living at home. A background questionnaire was administered to each family for the purpose of describing the sample.

Sample families were given (1) plastic bags for storing of paper wastes and (2) bathroom tissue, the unused portion of which was collected with the other paper discards. The weight of all paper discards was tabulated for each family and an average was tabulated for families …

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 …

Investigations Of The Algal Productivity Of Selected And Limited Sites Along The Western Shore Of Bear Lake, Utah-Idaho, John William Sigler

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Investigations of limited and selected areas along the western shore of Bear Lake were carried out to determine the relative algal productivity with relation to nutrient concentrations and incident sunlight. The primary objective of the study was to determine the effects of nutrient changes in the littoral zone on the western shore on the algal productivity and to establish a baseline of data.

^l4C0₂ radioisotope was used as the principal measurement of organic carbon production as an estimate of productivity. Chlorophyll extracts were made and used as a secondary method for the estimation of productivity. Chemical analysis of …

The Effect Of Heat Treatment Of Fresh Frozen Vells On Rennin Extractability, Leesther Mifflin Holm

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A procedure was developed for the extraction of rennet from fresh frozen vells. Frozen vells were minced in a Model VCM-25 Hobart Vertical Cutter/Mixer. Dry sodium chloride was added until the salt concentration in the moisture of the tissue was 10%. Salted tissue was placed in galvanized steel cells and heated in a water bath to 49, 54, 57 and 60 C for 0, 15, 30, 45 and 60 minutes. The heated tissue was dried to about 4% moisture at ambient temperature with the aid of an electric fan. The dried salted tissue was extracted with a sodium chloride solution …

Continuous Flow Analysis Of Non-Casein Protein In Milk, Robert Steven White

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Technicon AutoAnalyzer II was evaluated for automatic quantitation of non-casein protein (NCP) in milk. The Lowry method for colorimetric measurement of proteins was adapted to the automated method and found to be accurate in the determination of non-casein protein in milk. The automated Lowry method obeyed Beer's law. Casein content was calculated by difference between total protein determined by infrared milk analysis (IRMA) and non-casein protein. In the analysis of twenty-five replicate milk samples, the standard deviation was 0.32 and the coefficient of variability was 0.90. The casein content as a percentage of total protein in the milk of …

Evaluation Of The Filter Paper Method For Estimating Soil Water Potential, Samir Al-Khafaf

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The filter paper method for measuring soil water potential was evaluated. The method was calibrated using salt solutions (-1.4 bars to -22.4 bars), sample chamber psychrometer (-1 to -50 bars), pressure plate (-0.1 to -15 bars) and soil column at equilibrium (0 to -0.2 bars). It was found that the absolute temperature had little effect on the predicted soil water potential, but a temperature variation had a large effect. It was found that the temperature fluctuation must be small. The predicted water potential was influenced by the type of contact of the soil with the filter paper. It is suggested …

A Study Of The Relative Importance Of Training On The Employability Of The Mentally Retarded As Rated By Employers And Educators In Cache County, Utah, John F. Hurst

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Relative differences in attitudes between educators and employers concerning training of the mentally retarded within Cache County were studied by analyzing their responses to 40 questions dealing with Academic, Personal, Social, and Vocational Skills.

Academic Skills were found to show no statistical significance in terms of attitude differences expressed by educators and employers as they relate to successful employability criterion.

Personal Skills were found to show no statistical significance in terms of attitude differences expressed by educators and employers tested as they relate to successful employability criterion.

Personal Skills were found to show no statistical significance in terms of attitude …

Boron Movement In Soil Columns, Joseph William Stucki

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Three adsorption theories--Langmuir, B.E.T., and Freundlich--were applied to boron interaction with Aiken clay loam and Vernal sandy loam soils to determine which bests describes the system.

Column studies were conducted to obtain constants related to mass fluid flow and fluid dispersion within the column. An inert ion was used to obtain the pore volume and to calculate the fluid dispersion coefficient. These data were used to solve the material balance equation by the explicit numerical method developed by Lai for a digital computer. The output from the computer was a predicted profile boron distribution within the soil column.

The soil …

Aquatic Invertebrate Consumption By The Major Fish Species In The Blacksmith Fork River, Theodore F. Meyers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Exponential rates of digestion are described for brown trout and whitefish for July, October, December (1969), and April (1970). The slope of the line fitted to the digestion data from each month was defined as the instantaneous rate of digestion and applied to an exponential growth model to determine the instantaneous consumption rate.

The digestion and consumption rates were applied to field measurements of percent fullness to determine the amount of food material ingested during a 24 hour period. Brown trout consumed 127, 24, 19, and 84 mean percent of their stomach capacity in the July, October, December, and April …

An Analysis Of Area Interests And Employment Projections With A Recommended Program Of Study And Educational Specifications For An Area Vocational Center For San Juan County, Utah, Loren Martin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to investigate the needs of San Juan County, Utah, in regard to an overall program of vocational education including ancillary services and new facilities for an area vocational center. Literature was reviewed concerning the need for vocational education, recent developments and trends in vocational programs, and other refinements in educational theory which influence instruction. Several groups of people were surveyed to determine the needs and interests of area residents with special attention given toward the Navajo Indian population.

The overall program which was developed incorporates aspects of the career education theme as it relates …

An Experiment To Determine The Effectiveness Of A Remedial Reading Program With Students At Utah State University, Judith J. Ivarie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study is to determine the effectiveness of 20 hours of remedial reading instruction as compared with 20 hours of vocabulary instruction on a select group of university freshmen in the Remedial English Program. Three measures of effectiveness used were comprehension, rate, and effective reading rate. The effective reading rate was determined by computing the arithmetic product of level of comprehension and rate of reading. The results indicated that for this particular population, using the materials and instructional techniques described, neither group increased reading rate at the .01 level of significance. The effective reading rate of the …

Wind Noise: Its Effect On Human Audition, William Roy Nelson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An examination was made of the acoustic characteristics of wind turbulence generated noise in a car traveling at 70 mph over smoothly paved highway with the driver's window down. The overall noise level was found to be at 112 dB SPL with the predominance of energy in the low frequencies. The study was concerned with the effects of such noise on human audition in terms of temporary threshold shift.

Twenty normal hearing young adults were exposed to a tape recording of wind noise for 15 minutes. Post-exposure auditory thresholds at seven discreet frequencies were compared to pre-exposure auditory thresholds at …

Import Substitution Potentials And Marketing Policies For Forest Products In Iran, M. A. Salimi-Manshadi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Consumption data for different forest products were calculated for nine years (1962 to 1970). Then, taking consumption as a function of per capita disposable income and population, mathematical models were developed. By regressing per capita consumption of each product on per capita disposable income and determining the corresponding coefficients, the per capita demand for the products in the target years was calculated. The total projected demand was then computed by the products of per capita consumption and population in the target years.

Through regression analysis the future import of forest products was projected, and import substitution possibilities were discussed.

Finally, …

Adsorption-Desorption And Movement Of Picloram (4-Amino-3,5,6-Trichloropicolinic Acid) In Soils, Desh Raj Duseja

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adsorption and desorption of picloram (4-amino-3,5,6-trichloropicolinic acid) in soils was studied utilizing both batch technique and soil columns. The five soils from the states of Utah and California ranged from 0.6 to 18.7 percent in organic matter content, 5 to 21 percent in sesquioxides and 6.45 to 7.55 in pH. In batch studies, the factors affecting picloram adsorption-desorption included time, soil type, organic matter, herbicide concentration, temperature, pH, and inorganic electrolytes. The soils adsorbed 10.8 to 58.2 percent of the added picloram from 0.05 to 10,0 ppm of picloram aqueous solutions. Adsorption was highly correlated with organic matter (r = …

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 …

Some Aspects Of Conditioning Behavior In Rainbow Trout, Salmo Gairdneri, Reed E. Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Effects of exercise, social facilitation, and delayed conditioning after vi exercise on the learning behavior of 5 to 6-inch rainbow trout, Salmo gairdneri, was measured in a conditioned avoidance response apparatus. The conditioning schedule contained an intertrial interval between alternate presentations of conditioned (light) and unconditioned (shock) stimuli. This randomization eliminated learning losses found in a previous study. Mean percentage avoidance, the measurement of learning, did not decrease significantly during conditioning trials. Exercised fish learned avoidance better than did non-exercised fish. Mean percentage avoidance for fish exercised at 0.5 ft/sec was 66.3; at 1.0 ft/ sec, 1.5 ft/sec, and …

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 …

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 …

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 …

Hybrid Computer Modeling Of The Hydro-Salinity Flow System Within A River Basin, Duane R. Jensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As demands upon available water supplies increase, there is an accompanying increase in the need to assess the downstream consequences resulting from changes in the upstream hydrologic system and salinity flow system.

Since the burden of water quantity and quality maintenance must be shared by the users, predictions are needed for quantity and quality changes which might result from contemplated development at any specified location within the river system. A close relationship between the hydrologic and salinity flow systems exist, thus making it necessary for an understanding of both systems in order to properly manage the salinity system.

This study …

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 …

The Development Of Career Activities For Fourth Grade Students, Barbara P. M. Southwick

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Today's youth have few real contacts with the work world and have little knowledge of what is expected from them. Many grade school youngsters are not aware of the type of work their parents are doing. Some do not even know where their parents work. It is difficult for most elementary students to see the relationship between their present school activities and their future life. And all too often, students can not express personal goals or plans.

As students become more aware of the world of work, they should be better prepared to enter it and they should also develop …

Dogmatism And Philosophy: Their Relation To Teacher Acceptance And Understanding Of The New Social Studies, Donald E. Anctil

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research project was a study to determine the relationship of two characteristics--dogmatism and educational philosophy--to teachers' acceptance and understanding of the New Social Studies (NSS).

The sample consisted of 222 secondary social studies teachers from three counties in tho San Francisco Bay Area. Questionnaires were mailed to schools selected at random and were administered by an agent, in most cases, the department chairman, to all social studies teachers in the school, during a single administration period.

The questionnaire utilized four measurement scales. Troldahl and Powell's Short Form Dogmatism Scale and Curran's Short Test of One's Educational Philosophy, published and …