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Physical Factors Influencing Survival To Emergence And Time Of Emergence Of Shoreslope-Spawned Kokanee Salmon In Flaming Gorge Reservoir, Utah-Wyoming, Randall J. Jeric

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I used incubation baskets containing viable eggs and spawning substrate to estimate the survival to emergence and time of emergence of kokanee salmon Oncorhynchus nerka at depths to 20 m in Flaming Gorge Reservoir, Utah-Wyoming. Traps on the incubation baskets captured fry emerging from a known quantity of eggs. Water drawn into a syringe from an intragravel pipe buried near each incubation basket was used to determine intragravel dissolved oxygen concentrations throughout the intragravel period. Water from control baskets without eggs did not have significantly greater dissolved oxygen concentrations than adjacent water. A jar associated with each incubation basket collected …

An Ecological History Of Tintic Valley, Juab County, Utah, Jeffrey A. Creque

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This work was a case study of historical ecological change in Tintic Valley, Juab County, Utah, an area historically impacted by mining and ranching activities common to much of the American West. The temporal framework for the study was approximately 120 years, the period of direct Euroamerican influence. In recognition of the ecological implications of cultural change, however, the impacts of prehistoric and protohistoric human activity on study area landscape patterns and processes were also explicitly addressed.

The study included a narrative description of historic land uses and ecological change in Tintic Valley, and examined the changes in landscape patterns …

A Survey Of Employees Of The United States Department Of Agriculture's Animal Damage Control Program, Susan A. Schroeder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined the attitudes of employees of the United States Department of Agriculture's Animal Damage Control (ADC) Program. This research examined ADC employees' attitudes about wildlife, the ADC program and ADC employment, wildlife damage management methods, euthanasia and the killing process, and the role of various public and private groups on ADC policy. This study also applied the theory of organizational capture to the ADC program to test its utility in explaining the attitudes and behaviors of employees. Results were based on a survey of ADC employees conducted in January 1995.

Survey responses were analyzed to explore associations between …

Visitor Use Of Interpretive Facilities At Fossil Butte National Monument, Wyoming, Rizal Bukhari

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Visitors expect to a gain high-quality outdoor experiences at any recreation site they visit. In order to support that effort, most recreation managers utilize interpretive facilities to educate and inform visitors about the site. It is important for interpretive managers to be aware of what kind of interpretive media could best be used in a given setting for the type of visitor anticipated. To accomplish this goal, it is necessary to understand visitors' behavior and incorporate that understanding into the interpretive planning process.

This study looks at visitor use of interpretive facilities provided at Fossil Butte National Monument, Wyoming. The …

The Influence Of Forest Fragmentation And Landscape Pattern On American Martens And Their Prey, Christina D. Hargis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Habitat fragmentation occurs when large tracts of an orginal habitat are replaced by smaller patches of two or more habitat types, largely through human activities. I studied the behavior of six measures of landscape pattern that seemed appropriate for quantifying fragmentation, and used these measures to investigate the effects of forest fragmentation on American martens (Martes americana) and their prey. The measures I selected were edge density, contagion, mean nearest neighbor distance between patches, mean proximity index, perimeter-area fractal dimension, and mass fractal dimension. To test the behavior of these measures with a variety of landscape patterns, I …

Hydrochemical Definition Of Ground Water And Surface Water, With An Emphasis On The Origin Of The Ground-Water Salinity In Southern Juab Valley, Juab County, Utah, Heidi K. Hadley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As part of a U.S. Geological Survey study in Juab Valley in central Utah from 1991 to 1994, the chemistry of ground - and surface -water samples was determined. Total dissolved solids in the ground water of southern Juab Valley have historically been higher, in general, than ground water in other areas of Utah. Total dissolved solids for ground-water samples from this study ranged from 623 to 3,980 milligrams/liter. High-sulfate chemical data of previous studies suggested that the major source of ground-water salinity is the dissolution of gypsum (hydrous calcium sulfate ) from the Arapien Shale. Sulfur-34 to sulfur-32 isotopic …

Superoptimal Co2 Reduces Seed Yield In Wheat, Timothy P. Grotenhuis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Although projected terrestrial CO₂ levels will not reach 1000 μmol moI^-1 (0.1%) for many decades, CO₂ levels in growth chambers and greenhouses routinely exceed that concentration. CO₂ levels in life support systems in space can exceed 10,000 μmol moI^-1 (1%) CO₂. Numerous studies have examined CO₂ effects up to 1000 μmol mol^-1, but theoretical and some experimental evidence indicates that the beneficial effects of CO₂ continue past 1000 μmol mol^-1 and are near-optimal for wheat at about 1200 μmol mol^-1.

We studied the effects of near-optimal …

Paleoenvironmental And Stratigraphic Interpretation Of The Middle Cambrian Ute Formation, Northern Utah, Keith E. Eagan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Middle Cambrian Ute Formation includes some 200 m of cyclically alternating carbonates and mud rocks. These are arranged in eight to nine, meter-scale, shallowing-upwards packages, representing deposition under predominantly subtidal conditions. The packages consist of vertical sequences of shale, silty limestone, oncolitic packstone, and oolitic grainstone that exhibit little variance in this general pattern. Small-scale unconformities separate the packages. The inferred depositional environment consists of an intrashelf basin that has a peritidal platform near its margins. The craton, which supplied most of the terrigenous sediment, was situated to the south (Cambrian orientation), and located near the equator. One cycle …

Adaptive Density Estimation Based On The Mode Existence Test, Nizar Sami Jawhar

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The kernel persists as the most useful tool for density estimation. Although, in general, fixed kernel estimates have proven superior to results of available variable kernel estimators, Minnotte's mode tree and mode existence test give us newfound hope of producing a useful adaptive kernel estimator that triumphs when the fixed kernel methods fail. It improves on the fixed kernel in multimodal distributions where the size of modes is unequal, and where the degree of separation of modes varies. When these latter conditions exist, they present a serious challenge to the best of fixed kernel density estimators. Capitalizing on the work …

Aminostratigraphy Of Thatcher Basin, Se Idaho: Reassessment Of Pleistocene Lakes, Amy Hochberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Quaternary geologic history of Lake Thatcher, southeastern Idaho, is pivotal in determining when the Bear River carved its through-flowing channel into the Bonneville Basin. Bright's reconstruction of the history of Lake Thatcher was based on ¹⁴C dates that are now known to be inaccurate. Lava Creek B ash found interbedded with lacustrine sediment suggests that Thatcher Basin contained a lake well before Bright's original estimate of 34 ka.

D/L ratios, which measure the extent of racemization in fossil gastropods, in conjunction with paleosols and tephra, were used to correlate between four localities across Thatcher Basin to reassess lake-level …

Where Language Touches The Earth: Folklore And Ecology In Tohono O'Odham Plant Emergence Narratives, Jennifer L. Hughes

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The historical and ecological relationships between the Tohono O'odham and the Sonoran desert landscape are expressed in the stories they tell. The Tohono O'odham have lived in the deserts of southwestern Arizona and northern Mexico for centuries, interacting with their environment and gaining intimate knowledge of desert botanical communities. Many of these interactions are dramatized in their traditional oral narratives. I have characterized those traditional oral narratives that illustrate and articulate Tohoro O'odham interrelationships with Sonoran desert botanical communities as "plant emergence narratives." These stories embody and express the reciprocal relationship between the Tohono O'odham and the plants they cultivate …

An Integration Of Tillage And Herbicides To Control Jointed Goatgrass (Aegilops Cylindrica Host.) In Winter Wheat, Troy M. Price

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An integrated management approach for jointed goatgrass control was investigated at two farms in northern Utah using three tillage regimes and tree herbicides. The tillage regimes included no tillage, conservation tillage, and conventional tillage. Each regime was composed of different tillage practices common in the Intermountain West. A preemergence herbicide, clomazone, and two postergance herbicides, 2, 4-D and glyphosate, were investigated. Greenhouse studies were also conducted to investigate clomazone efficacy and depth of planting of winter wheat and jointed goatgrass.

Differential sensitivity to clomazone between jointed goatgrass and winter wheat did not occur in the greenhouse for the rates tested. …

Spatial And Temporal Dynamics Of Plant Populations In Salt-Desert Shrub Vegetation Grazed By Sheep, Humberto Alzérreca-Angelo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I studied the effect of moderate sheep grazing on a shadscale plant community at the Desert Experimental Range, southwestern Utah, USA, using a 61-yr data set with two grazing treatments (yes vs. no), two seasons (spring vs. winter), and two soil types (loamy-skeletal vs. coarse-loamy). I studied precipitation, total species cover, annuals, shrub survival, seedling recruitment, plant succession, and plant spatial relationships.

Precipitation showed high variability (CV=31%) masking on short-term cycles, resulting in study intervals with average (1935-58), dry (1958-69), driest (1969-75), and wet (1980-94[5]) regimes. Total cover in both grazed and ungrazed pastures increased between 1935 and 1975 before …

Phylogenetic Studies Of The United States Bluetongue Viruses And Characterization Of The Viral Vp4 Protein, I-Jen Huang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bluetongue virus (BTV) is transmitted by arthropod vectors and causes bluetongue disease with serious economic loss in many regions of the world. The replication mechanism of bluetongue virus is still not clear. To have a better understanding regarding the viral replication, the function of each individual protein has to be identified. This study used molecular biology techniques to investigate the function of the inner core protein VP4.

The M1 genes of United States bluetongue virus serotypes-2, -10, -11, -13, and -17 were cloned and sequenced. The length of each of the five M1 genes is 1981 nucleotides. The coding region …

The De Villers Book Of Hours, Kenneth R. Williams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Created in France during the late fifteenth century, the illuminations, text, and family genealogy (added by one of many owners) found in De Villers Book of Hours make it an excellent example among other French books of hours from this period. In addition to acting as a repository of the style and iconography of French fifteenth-century illumination, the book's rich decorative program and varied textual content provide a remarkable document of contemporary devotional piety.

This thesis provides the first detailed description and analysis of the De Villers Book of Hours. Following a description of books of hours in general, the …

Development Of An Ovine Genome Map With Emphasis On In Situ Hybridization, Melanie R. Heaton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Livestock genome maps are used to identify economic trait loci and loci proximal to genes affecting economically important traits. This research contributes to the development of the ovine genome map by establishing techniques to physically map large DNA inserts to ovine chromosomes using fluorescent in situ hybridization. Fluorescent in situ hybridization techniques were established using yeast artificial chromosomes as DNA probes. Probes were as large as 1,000,000 kilobases and hybridized to fixed ovine metaphase chromosomes from a callipyge ewe. Three yeast artificial chromosome probes contained a genetic marker for the ovine callipyge gene. Probes were assigned to ovine chromosome pair …

Financial Innovation, José C. Blanco

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This dissertation was a study of the impact of financial innovation upon financial institutions and some of the collateral macroeconomics effects. Financial innovation has impacted the distribution of household assets throughout the Group of Seven (G-7) countries and indirectly negatively influenced the usage of traditional monetary aggregates as a reliable tool to forecast the growth in the domestic money supply between 1960 and 1990.

The empirical results indicate that the adoption of financial innovations by large U.S. commercial banks has not influenced their return on equity and the return of assets between 1990 and 1994. The variability of the return …

Alteration In Basic Macrophage And Lymphocyte Cytokines From Benzene And Phenol In The Drinking Water Of Male Institute Of Cancer Research Mice, Jay C. Albretsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Groundwater contamination is a concern due to the large number of people that can become exposed to the contaminant. The chemicals benzene and phenol are known groundwater contaminants. The main health problem caused by benzene or phenol is bone marrow toxicity. Benzene and phenol are also immunotoxins reported to cause decreased thymic weights, altered lymphocyte mitogenic responses, and lower antibody production.

Cytokines are key signaling molecules produced by the cells of the immune system to activate other cells in the immune system, produce antibodies, and recruit other cells to sites of inflammation. The purpose of this study was to determine …

Evaluation Of Low-Quality Forages In A Winter Dietary Regimen Of Western White-Face Ewes Used For Milk Production, Raúl Meneses

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The evaluation of ammoniation of mature grass (1/3 Festuca sp, 1/3 Bromus and 1/3 Dactylis sp) as a basal diet for pregnant ewes and its effects on ruminal fermentation were studied. Ammoniation increased the forage dry matter intake (DMI), crude protein (CP), and gross energy digestibility. Ruminal pH and total volatile fatty acid were not affected by ammoniation (P > .05). Individual VFA concentrations were affected significantly.

In a third experiment, ammoniated wheat straw was evaluated as a basal diet for wintering pregnant ewes. Ammoniated straw replaced grass hay in the diet. Dry matter intake was not different (P > .05). Final …

The Legal Environment For Landscape Architecture In Utah, Jeffrey J. Scarborough

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This paper explores and delineates the legal environment for the practice of landscape architecture in Utah. The national, state, and local (city and county), codes that apply to landscape architecture and the related professions of architecture, engineering, and land surveying are documented, as is pertinent case law. Figures allow comparisons to be made between the various government levels to demonstrate contradictions and congruencies, as well as the clarity of the ordinances. Major findings include significant differences among the city and county regulations of landscape architecture and the related professions, and weaknesses in the state law for landscape architecture. Major recommendations …

Quantification Of Landscape Structure Within The Land Condition-Trend Analysis Monitoring Program At Camp Williams, Utah, Lorraine Munguia

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Land Condition-Trend Analysis (LCTA) program was developed by the U.S. Army to assist in the sustainable management of natural resources on U.S. Army lands. The LCTA program applies a standardized procedure in order to select long-term monitoring sites. The LCTA monitoring program was applied to Camp Williams, a National Army Guard training site located in central Utah. Due to the criteria set by the LCTA monitoring program, 61 percent of Camp Williams was explicitly excluded from the LCTA monitoring protocol because it appeared to be more heterogeneous, which would make it difficult to locate monitoring sites in the field. …

The Effects Of Osmotic Potential On Ammonification, Immobilization, Nitrous Oxide Production, And Nitrification Rates In Penoyer Soil, Andrew P. Low

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An isotopic dilution method was used to test the effects of osmotic potential, (𝛹_s), upon nitrification, ammonification, N-immobilization, and nitrous oxide production rates in soil at solute concentrations encountered in Penoyer soil. A nitrification potential assay was also performed to approximate maximum nitrification rates.

Nitrification potential rates in soil slurries exponentially declined in response to decreased osmotic potential. However, nitrification was independent of salt concentration at the ambient NH₄⁺ concentrations of the soil. The differential response was attributed to the variable NH_4⁺ substrate quantities. The effects of osmotic potential were secondary to NH_{4 …}

The Relationships Of Parental Marital Status, Quality Of Family Interaction And Gender To Adolescent Tobacco, Alcohol, And Marijuana Use, Stephen K. Hunsaker

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The tobacco, alcohol, and marijuana use of adolescents was examined to see if any differences existed in the marital status of the adolescent's parents, the quality of family interaction for the adolescent, and the gender of the adolescent. Marital status was defined as intact families where adolescents were living with both biological parents, and nonintact families where adolescents had parents who were single, divorced, widowed, never married, and remarried. Data were from a survey that examined youth issues of 500 adolescents from a rural Utah county. It was hypothesized that marital type and quality of family interaction (family kindness, family …

Developmental Stages Of Preschool Teachers In Selected Arab Gulf Countries, Najwa Mounla

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The current study focused on examining the developmental stages of preschool teachers in the Arab Gulf region. Specifically, the needs and concerns of teachers were investigated using a pretest/posttest (12-month interval) design. Participants included two groups of preschool teachers, trained (n = 35) and untrained (n = 122)

Contrary to expectations, the sequential nature of development stages of teachers did not emerge. Instead, the results showed that teachers become less concerned about teaching as they progress in their careers.

When data from the present study were factor-analyzed they yielded only two areas of concerns that seemed applicable cross-cultrally. …

Perceived Children's Characteristics And Other Factors Relating To Parents' Psychological Well-Being In Midlife, Catherine D. Stogner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research examined child-parent relationships from the perspective of the psychological well-being of parents during midlife and while launching children. A subsample of 1,253 parents from the National Survey of Families and Households was studied using variables from both waves (1988 and 1993) of longitudinal data. Fathers and mothers were analyzed separately for depression and self-satisfaction at the second wave (1993) in relation to their< perceptions of child, adjustment and child-parent relationships in 1988, and parents' employment and their marital status in 1993.

Analyses showed that fathers' depression scores in 1 g93 were significantly related to fathers' perceptions of child adjustment (total and positive), and fathers' age, marital, and employment status. Mothers' depression scores were associated with their …

Risk Factors Associated With Early Adolescent Sexual Values And Behaviors, David Macbeth

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescent sexual activity and subsequent pregnancy are ii an increasing dilemma facing American society . There appears to be an increase in the incidence of casual sexual activity among adolescents that leads to over 50% of students between grades 9 and 12 having been involved in sexual intercourse. This study examines changes in adolescent sexual attitudes, behaviors, and values in a select population over a 2-year time span.

A survey of 548 families with adolescents was used to determine the impact of the Facts and Feelings home-based sexual abstinence program on mean scores for academic aspirations, academic achievement , sexual …

Infant Physical Attractiveness, Affect, Temperament, And Gender In Relation To Tester Behavior, Andrea D. Hart

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Easily observable infant characteristics have been shown to influence others; perceptions of infant competence. This study examined the relation between infant characteristics and a tester's willingness to repeat opportunities for the infant to pass items during administration of a cognitive test. Results showed that infant physical attractiveness was related to lower elicited infant performance (the ratio of items initially failed). Positive affect was related to higher test scores. Because first impressions are likely to contribute to future relationships, it may be important to educate adults who interact with infants about the effects of stereotyping infants based on first impressions.

An Interdisciplinary Theoretical Framework For The Mailed Questionnaire Process And The Development Of A Theory On Immediacy And Salience As Significant Variables Of Response Rates, Maribeth Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The mailed questionnaire research process developed historically as part of the survey research movement, with guidelines and models drawn from an array of scientific research methods and disciplines. Although the mailed questionnaire has become one of the most popular research instruments for obtaining data beyond the reach of the observer, the response bias generated from the generally low return rate of the mailed questionnaire survey has remained a problem. For over three decades researchers have generated a plethora of research on the effectiveness of the various aspects of the mailed questionnaire process and the resultant impact of various constructs on …

A Study Of The Gradient Drift Instability In The High-Latitude Ionosphere Using The Utah State University Time Dependent Ionospheric Model, Mahesh Subramanium

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research over the years has established that the Gradient Drift Instability process causes small-scale irregularities, mostly along the edges of the high-latitude polar cap patches. Studying these irregularities will help in the development of a Global Scale Ionospheric model, which is a central part of a global space weather forecast system. Much theoretical work has been done with varying degrees of complexity to study this instability in the high latitude patches.

In this work we have used the Utah State University Time Dependent Ionospheric Model to model the high-latitude patches, calculate the growth rate of the instability, and perform a …

Anorexia Nervosa And Bulimia Nervosa: The Patients' Perspective, Benita J. Quackenbush

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Eating-disorder clients show low motivation, poor follow-through, and inordinate premature dropout rates in treatment. To date, little research has been conducted that might provide clinicians with an understanding of the critical factors that may aid clients' recovery. Such factors may be used by clinicians to better motivate clients to collaborate in treatment. The purpose of this study was to identify some of the critical factors that women with eating disorders believed were crucial in prompting or facilitating their recovery. Identification of these factors was accomplished through a systematic content analysis of semistructured interviews with recovered or recovering bulimics and anorexics. …