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An Intensive Edaphological Characterization Of The Soils Of Malambito Experimental Station And Its Implications In Future Agricultural Research, William L. Rubink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Malambito Experiment Station, in the Atlántico III project area, Department of Atlántico, Colombia, had almost no quantitative edaphological data on which to base agricultural research. Unexplainably low general yields as well as problem areas of deficient plant growth only confounded the results of field plot experiments. Intensive soil sampling and subsequent measurements of pH, EC_e of the saturation extract, and the four major cations disproved the previous suggestions that the crop growth problems were related to saline, sodic, or degraded soil conditions. The Ca/Mg+K+Na ratio, although significant when correlated with plant height, was sufficient explanation for only a small …

Structural Geology Of The Northern Part Of Clarkston Mountain, Malad Range, Utah-Idaho, Steven Mark Burton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The northern part of Clarkston Mountain, in northern Utah and southern Idaho, is located about 23 miles northwest of Logan, Utah. It extends across the Malad Range from Malad Valley on the west to Cache Valley on the east. The mapped area measures 4.8 miles in the north-south direction and 6.8 miles in the east-west direction.

The Brigham Formation of Cambrian age is the oldest exposed stratigraphic unit. It consists mainly of quartzite. Younger Cambrian units include the Langston, Ute, Blacksmith, Bloomington, Nounan, and St. Charles Formations. The Garden City Formation of Ordovician age is the youngest Paleozoic unit. The …

Impact Of The Black-Tailed Jackrabbits (Lepus Californicus) On Vegetation In Curlew Valley, Northern Utah, Mark Westoby

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The interrelations of black-tailed jackrabbits and the desert-shrub vegetation on which they were feeding were studied in Curlew Valley, Northern Utah. The vegetation was described as a three-cornered continuum, the corners being types dominated respectively by Artemisia tridentata, Atriplex confertifolia, and Sarcobatus vermiculatus.

Jackrabbit diet was studied by microscopic analysis of plant fragments in stomachs from shot animals. The method was inaccurate, apparently because the ratio of identifiable tissues to all ingested tissues was very low, and varied between plant taxa, and seasonally. This problem seems intractable for desert shrub vegetation.

The diet was similar to that …

Mesoscale Atmospheric Circulation And Diffusion Characteristics, Ronan I. Ellis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Constant volume superpressure pillow balloons were flown over a mountain valley downwind from a sharp ridge line. Balloon trajectories revealed and atmospheric soundings confirmed a persistent turbulently mixed adiabatic layer over the valley at approximately ridge top height except in the immediate lee of the ridge where strong vertical motions were observed. Temporary stationarity of the relative mesoscale turbulence was found to exist on a time scale exceeding 4 hours. Power spectrum analysis of component relative velocities showed greater variance in lower wave numbers and anisotropy in mesoscale turbulence. Eddy diffusivity coefficients for turbulence above the ridge height were K …

The Effects Of Mobile Assisted Career Exploration On The Career Development Of Rural Ninth Grade Students, Robert Eldred Charlton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Problem. This study investigated whether or not a structured career development program, using a mobile guidance unit and operating on a limited time schedule, could provide a feasible means for facilitating the career development of ninth grade students in the rural school setting.

Project MACE. MACE stands for "Mobile Assisted Career Exploration." Project MACE was a study developed by the research office of the Utah State Board of Education and conducted by Utah State University. The study used ninth grade students in sixteen selected rural Utah high schools and in two rural …

Trout Movements In A Small Mountain Stream, Thomas Mark Twedt

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Five groups of 400 hatchery rainbow trout, (Salmo gairdneri), were stocked in a small, mountain stream at 3-week intervals from June to September, 1972. A fish trap captured any fish moving out of a 500 m study section.

Fish began moving at high levels during the first day of each stocking and continued at high rates for 5-8 days (Early Phase), after which movement decreased to low levels for 6-9 days (Late Phase). Early Phase fish moved primarily at night, possibly due to their disoriented state and high subjectivity to stream conditions. Fish moving during Late Phase did …

The Fixed-Interval Presentation Of A Small Fixed Ratio, Larry Allen Alferink

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In mixed fixed-ratio schedules, reinforcement is delivered according to two or more fixed-ratio components, which may be programmed in simple alternation or according to a random sequence. If the components simply alternate, the behavior is similar to that obtained in a multiple schedule. Pauses are long before long fixed ratios and short before short fixed ratios. If a random sequence is used, responding is characterized by short pauses after reinforcement independent of the size of the ratio and primes occur at the beginning of many of the fixed ratios. The purpose of the present study was to investigate the possibility …

Modification Of Ontogenic Expression Due To Relocation Of The Ry+ Gene In Drosophila Melanogaster, Allen A. Badgett Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ry⁺ gene of Drosophila melanogaster and its associated enzyme, xanthine dehydrogenase, were employed in an analysis of the relationship between regulation and the location of a gene in the genome. Enzyme assays as an indication of gene activity were performed on genotypes containing zero, one and two doses of ry⁺ genes. Xanthine dehydrogenase activity of rosy genes in normal and relocated positions was determined during development.

The results indicate: 1) the gene ry⁺ is differentially active during ontogeny; 2) the activity during ontogeny is proportional to the number of ry⁺ genes present in the genome; …

The Validity Of Awarding Credit By Examination In English Composition, Mark Guymon Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study investigated the validity of excusing students from composition courses based upon an objective examination.

Utah State University (USU) students who had taken freshman composition courses during the 1970-71 school year when these courses were required of all entering freshman students were divided into two groups: one group was composed of those who had received an "A" or "B" for three freshman composition courses, while the other group had received a- "C" or "D" for the same courses. USU students who had been excused from taking freshman composition courses based on the CLEP General Examination in English Composition (CLEP) …

Group Treatment Of Insomnia In Psychiatric Patients Through Relaxation Training, Richard Robert Weber

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The present study investigated the effects of progressive relaxation training using an abridged form of Jacobson's (1938) relaxation exercises on the mean number of nocturnal sleep disturbances in a group of psychiatric inpatients. Nocturnal time-sampling observations were made during a 14 day base line to select Ss who averaged 1.5 sleep disturbances per night. Six women, ranging in age from 23 to 56 years, were classified as problem sleepers and were moved to a common bedroom, where a second 16 day base line was taken to control for changes in the nocturnal environment. After a brief introduction and demonstration, …

Task Persistence In Early Childhood Education, Thomas Richard Stephenson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was designed to discover developmental trends in task persistence (TP). It was hoped that the results would suggest when and for what groups a task persistence (TP) curriculum is crucial.

To study this development a sample of two, four, and six year old children were given a "work" task. The task required 120 subjects (Ss) to sort and fold 33 items of clothing and linen. After the task instructions and demonstration, the experimenter did not intervene with reinforcers or further directions.

The dependent variables investigated were time spent on the task, time spent away from the task, and …

An Analysis Of The Effects Of Delay Of Reinforcement And Momentary Probabilities Of Reinforcement On Interval Schedule Performance, Charles A. Lund

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In two experiments pigeons were exposed to VI and FI schedules and schedules approximating both VI and FI schedules. In experiment I, the probabilities of the VI and FI components in a Mixed FI VI schedule were manipulated to create schedule contingencies approximating simple VI or FI. In experiment II, the minimum and maximum inter-reinforcement intervals were manipulated to create schedule contingencies approximating simple VI or FI. The major finding of both of these experiments was that maximal control by the dimension of time occurred as FI contingencies were approximated. Control by any one temporal value in experiment I depended …

Freshman Orientation And Career Articulation With A Rational Value Decision-Making Model, Bud W. Stephenson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The role identity of the college and university counseling center has been in a state of evolution for the past few years and a reconceptualized role for the college and university counselor is beginning to emerge. This evolution is the result of rapid change taking place within society and in higher education. In recent research such authors as Morrill and Oetting (1970) have noted that the programs of counseling centers in the colleges and universities are not changing along with the rest of the college environment today and programs are thus becoming more and more outdated and irrelevant. Along with …

Effects Of Exercise On Serum Lactate Dehydrogenase Activity Of Catchable-Size Hatchery Rainbow Trout, Salmo Gairdneri, Gerlad T. Klar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Effects of exercise and the relative condition of exercised fish were viii evaluated for two strains of rainbow trout. Circular tanks fitted with a paddle were used to continuously exercise the fish and a stamina tunnel was used to evaluate the condition of exercised trout. Trout were exercised continuously at one fish-length per second and one-half fish length per second. Serum LDH activity in Shephard-of-the-Hills (Missouri) rainbow trout acclimated to 10 C increased two fold during the first four days of exercise. Serum LDH activity returned to control levels by the tenth day of exercise. Serum LDH activity in Shephard-of-the-Hills …

Internal Water Potential Of An Engelmann Spruce Stand In Relation To Soil And Atmospheric Factors, Richard L. Meyn

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The primary objective of this study was to determine the degree of correlation between internal water potential of Engelmann spruce trees and selected environmental factors. The secondary objective of the study was to determine the effect of summer precipitation, both in meadow and forested sites, on the soil drying cycle.

Four study plots (each roughly 154 square meters) under spruce cover and two study plots (100 square meters) in a small meadow were established. At each spruce plot, a thermocouple psychrometer was installed at one meter above the ground on the north side of three selected, mature Engelmann spruce trees. …

Autecological Life History Studies Of Two Geraniums, Geranium Richardsonii And Geranium Nervosum, Becky Lee Green

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Two perennial species of wild geranium (Geranium nervosum Rydb. and G. richardsonii Fisch, and Trautv, [Geraniaceae]) which grow throughout the mountainous regions of western North America were studied to determine the factors influencing the life stage development and distribution of these plants. Attempts were also made to provide some information to assist in the taxonomy of this genus.

Geranium richardsonii is found in wet meadows and along streambanks throughout its distribution. Geranium nervosum frequents rocky hillsides and drier meadows throughout its range.

Seeds of G. nervosum had 65%, germination in the stratification pretreatment. Geranium richardsonii seeds required scarification to …

Absorption, Translocation And Metabolism Of 1,3-Dichloropropene In Selected Plants, David L. Berry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The absorption, translocation and metabolism of 1,3-dichloropropene (a soil fumigant) in bush beans, tomato and carrot was studied under growth chamber and greenhouse conditions using solution culture, vermiculite and sand. Absorption was monitored using gas chromatographic analysis and isotope techniques. Plants were shown to absorb a maximum amount of dichloropropene by 24 to 48 hr from solution culture and vermiculite. The plant absorbed and translocated 1,3-dichlorpropene-¹⁴C-U readily to aerial parts of the plant.

Bush beans, tomatoes and carrots absorbed and translocated 3-chlorallyl alcohol-¹⁴C-U from solution culture and vermiculite. Levels of 3-chloroallyl alcohol reached maximum at 24 …

School Systems In Communist China (1949-1963), Ting Chih Lang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose

The purpose of this study was to conduct historical research of the educational systems of the People's Republic of China during the period of 1949-1963. It is hoped that this study will help to clarify the Chinese Communist regime's approach to education and some of the problems encountered in its attempt to mold an educational system suitable for its economic and political need and purpose. More specifically, this study met the following objectives:

1. To know the picture of the school ladder.
2. To understand the deviation between actual practice and propaganda of Communist China's education.
3. To comprehend relationships between Party …

An Investigation Of Cluster Analysis, John C. Klingel

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Three cluster analysis programs were used to group the same 64 individuals, generated so as to represent eight populations of eight individuals each. Each individual had quantitative values for seven attributes. All eight populations shared a common attribute variance-covariance matrix.

The first program, from F. J. Rohlf's MINT package, implemented single linkage. Correlation was used as the basis for similarity. The results were not satisfactory, and the further use of correlation is in question.

The second program, MDISP, bases similarity on Euclidean distance. It was found to give excellent results, in that it clustered individuals into the exact populations from …

Petrology And Geochemistry Of The Morrison Formation, Dinosaur Quarry Quadrangle, Utah, Sue Ann Bilbey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Mineralogical and petrographic analyses of the upper Jurassic - lower Cretaceous units in the vicinity of the Dinosaur National Monument quarry near Jensen, Utah, have elucidated their characteristics and the locations of formational boundaries. The lower part of the Morrison Formation is distinguished by a decreased amount of illite and an increased amount of kaolinite. In contrast, the underlying Curtis Formation contains an approximately equal mixture of illite and kaolinite. The lower Salt Wash Member and the upper Brushy Basin Member of the Morrison are both lithologically and mineralogically identifiable in this area. Above the boundary between the two, kaolinite …

The Effects Of Elevation And Vegetation Type On Snow Accumulation And Melt In Logan Canyon, Utah, Paul R. Thies

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Snow accumulation and melt characteristics were studied in Logan Canyon, Utah. Three replications of aspen, conifer, and open field types at 6300, 7100,and 8000 feet were measured for snow depth and water content during 1972. Elevation was found to have the greatest effect on snow water content. The gradient of increasing water content with rise in elevation was found to be .51 inches/100 feet in the zone from 6300 to 7100 feet and 1.9 inches/100 feet from 7100 to 8000 feet. The cooler temperatures at higher elevations partially account for the 8000 foot zone beginning to melt 40 days after …

The Impact Of Access Roads On Spontaneous Colonization Chane-Piray Area Department Of Santa Cruz Bolivia, Thomas C. Royden

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to investigate the impact of access roads on the process of spontaneous colonization of virgin forest land in the tropical lowlands of Bolivia. An access road in the Department of Santa Cruz serving an area opened up by spontaneous colonization was studied. The interpretation of aerial photographs and data collected in the area were used to illustrate the importance of access roads for successful spontaneous colonization. General conclusions were drawn with regard to the role that spontaneous colonization as a dynamic force was playing in the development of Bolivia's tropical lowlands.

A Description Of Anglers And Angling Use In Two Areas Of The Uinta Mountains, John F. Hoagland

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The High Uinta Primitive Area, Utah's most popular high mountain recreation area, has a reputation as an excellent trout and grayling fishery. Proposed for inclusion in the National Wilderness Preservation System, the area faces several management dilemmas. The primary problem being that managers must protect the resource from the effects of heavy recreational use without destroying the primitive and aesthetic dimensions of wilderness environment. It appears that much impact on the more accessible lakes is due to fishing use. The objectives of the study were: (1) to determine the proportions of angling to non-angling groups; (2) to describe certain characteristics …

The Economic Efficiency Of Inter-Basin Transfers Of Agricultural Water In Utah: A Mathematical Programming Approach, John Keith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The economic efficiency of water development in Utah, including transfer systems, has seldom been examined, nor has the costs of public policies which result in deviations from efficient allocations. In order that public officials be better informed about water allocations, the present effort examines the efficient allocation of water in time frames up to 2020 under several alternative assumptions and calculates the cost of alternative policies.

Using mathematical programming techniques, a computer mode l is developed to determine the supply (marginal cost) and demand (value of marginal product) relationships for agricultural water, given depletions for municipal and industrial (M & …

Teaching Critical Thinking Through Student Self Analysis Of Video Taped Seminar Discussions, James M. Miller

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The main objective of the Cedar High School (C.H.S.) study was to develop a curriculum that would be useful to the social studies educator interested in teaching critical thinking skills to high school students. The model for teaching critical thinking that was followed during the C.H.S. study included three requirements. The first was to identify those critical thinking skills that would be useful to students during discussion of controversial issues. The second requirement of the critical thinking model was to teach these context specific critical thinking skills to students. This requirement was met by using a variety of materials, including …

The Local Interest As A Consideration In The Planning Of Highway Construction In The Canyonlands Region Of Southeastern Utah, Robert L. Barry

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An examination was conducted of the potential of proposed highway construction for serving the needs and interests of the population of the Canyonlands Region of southeastern Utah. The history of the highway development issue in the region was first examined with special attention given to the local position on the issue as expressed by local government spokesmen. Next, the total system of development proposals for the region was divided into four sections using criteria of area served and degree of controversy. A map analysis was conducted to determine how these four separate proposals would serve transportation needs of the region. …

Environmental Criteria To Aid Developers In Site Evaluation For Small Scale Residential Developments In Cache County, Utah, Roger P. Fickes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is the preparation of environmental criteria to be used to aid future developers, county planning board, and county commissioners in the evaluation of sites for proposed small scale residential developments, and whether that development will have an irreparable environmental impact. The criteria are intended to fill the gap between standards for housing developments and finished design and that of environmental impact of small scale housing developments in Cache County, Utah.

An Evaluation Of Land Use Planning Workshops Held In Utah During 1973, Andrew C. Germanow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During 1973 a series of land use planning workshops for local officials and interested citizens was held in the multi-county planning districts of the state of Utah. The workshops were based on a planning process which had been used in Wasatch County, Utah, to develop the Heber Valley Plan. The emphasis of this process and of the workshops was the involvement of the citizens of the community in the planning process and the use of natural resource information as an additional basis for making planning decisions.

The evaluation includes a description of significant results of the Heber Valley Plan, events …

Spatial Impact Of Factor Payments: A Case Study Of Turkey Production And Processing In Utah, Chesley T. Blackham

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this paper is to examine the importance of the spatial origin of capital or investment funds and its influence on local community incomes within the context of agricultural production and processing in a rural area in Utah.

A careful identification of the sources of capital investment can be used to determine the spatial source and flow of returns from it, and, hence, provides some indication of the extent to which local community income could be expected to change with changes in the level and mix of factors employed locally.

A Measure Of The Amount Of Phosphate Adsorption And The Rate Of Release Of Indigenous Phosphate From A Desert Soil, Robert Lindsey Evans

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The capacity of a calcareous desert soil, Thiokol silt loam, to retain natural, as well as added, orthophosphate-P was measured by equilibrium adsorption employing a batch technique and evaluated using the two-slope Langmuir adsorption isotherm. From these data, corrected to account for indigenous soil P, a hypothesis was formulated as to the nature of retention of P by the soil, including the identification of two interfacial reactions involving P, and a value calculated for the adsorption maximum as defined by the Langmuir isotherm equation for P with soil at each of two soil depths and three constant temperatures within the …