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A Preschool-Age Neurodevelopmental Comparison Between Normal-Birthweight Infants And Low-Birthweight Infants With And Without Intraventricular Hemorrhage, William Frederick Corey

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Advances in medical technology have provided the mechanisms for sustaining life in premature and low-birthweight infants, resulting in the survival of more of these infants. Low-birthweight (LBW) and preterm infants are placed at risk by a number of medical complications, including intraventricular hemorrhage (IVH).

The outcome of low-birthweight infants with intraventricular hemorrhage has been the subject of a great deal of research and continues to be a much-discussed topic in the medical and psychological communities. As more data become available, it appears that more questions arise concerning the later neuodevelopmental and neuropsychological outcome of these infants.

For this reason, research …

Reducing Stress Of Inservice Teachers, Jeffrey R. Curley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A prototype treatment developed to significantly reduce symptoms of stress among inservice teachers was tested in this experiment. Thirty participants selected for high stress levels were randomly assigned to treatment and control groups. They were assessed on environmental, personality, and emotional variables, using self-report and expert-judge measures, both pre- and posttreatment. The experimental treatment was holistic, incorporating all processes previously found to be related to reducing teacher stress. At posttreatment, the treatment group averaged 1.02 standard deviations lower on the stress measures than the control group. Significant differences in the posttest means, favoring the experimental group, were found for 23 …

An Examination Of Open- And Closed-Economic Conditions In Operant Research, Craig R. Loftin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The effect of economic condition on the relation between responding and overall rate of reinforcement has been an area of recent interest in operant research. The present research was conducted to determine whether the manipulation of the economic condition, by the systematic manipulation of the provision of substitute food, has an effect on this relation and whether open- and closed-economies represent two opposing alternatives or two parametric extremes along a continuum. The results of two experiments conducted with pigeons using variable-interval and fixed-ratio schedules of reinforcement suggest that the manipulation of economic condition has a controlling effect on the relation …

The Effectiveness Of Constant Versus Rotating Buddy Dyads On The Social Interactions Of Handicapped Preschoolers, Connie Faye Nelke

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Due to the passage of Public Law 94-142 (1975), widespread attempts have been made to integrate children who have handicaps into settings with their nonhandicapped peers. Although integrated settings may provide the opportunity for social interaction to occur between children with and without handicaps, often interaction does not occur. In order to address the issue of how to best facilitate appropriate interactions in integrated settings, specialized programs such as the FMS buddy system (Quintero, Phelps, Striefel, & Killoran, 1987) have been developed to promote positive social interactions between children with and without handicaps.

One important aspect programs such as the …

The Effect Of Notetaking And Review Among Eighth-Grade Students, Nancy Lindbergy Risch

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A study was conducted in which both notetaking and review were systematically varied in order to examine viii eighth-grade student's notetaking and performance behaviors. Three formats of notes (Matrix, skeletal, conventional) were examined in combination with three notetaking strategies (take notes/review own notes, take notes/review expert notes, listen/review expert notes) to form nine conditions. Subjects viewed a videotaped lecture, reviewed their respective set of notes, and were administered the following performance tests: structured recall, factual recognition, application, and synthesis. The number of ideas, number of words, and an efficiency calculation was obtained for each notetaking protocol. Results indicated that subjects …

Psychosis In A Developmental Psychopathology Context: A Factor Analytic Study Of Schizophrenia In Adolescent Psychiatric Inpatients, Paul R. Adams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Demographic, historical, psychometric, and clinical data were obtained from the psychiatric files of all patients manifesting schizophrenic symptomatology who were hospitalized in an adolescent psychiatric facility during a five year period (N= 71). Factor analysis of the usable data resulted in three interpretable factors, which included: (1) aggressive behavior; (2) disturbed family functioning; and, (3) thought disorder. Age of first hospitalization correlated positively with factor three.

The results provide support for concerns expressed by a number of scientists and clinicians that schizophrenia may not be a discrete, unitary disorder; and that uncritical downward extension of adult diagnoses to adolescents and …

The Reliability And Validity Of An Instrument Designed To Measure Attitudes Toward The Elderly, Jane Schultz

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An attitude is a mental state that influences the way an individual responds to relevant objects and situations. Attitudes toward the elderly have a potential impact on all Americans, as the population is growing older. These attitudes constitute an important area of study because their nature is unclear and their impact extensive.

The Kogan Attitudes Toward Old People Scale (OP) was examined to establish reliability and validity estimates. A questionnaire, consisting of this scale and four others, was administered to a sample of adults. Factor analysis of the OP revealed two factors, which were somewhat ambiguous. Internal consistency estimates for …

Utilization Of Poultry Waste (Composted Caged-Layer) As A Supplement For Sheep Fed Straw During Late Pregnancy, Raul Meneses R.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The utilization of composed caged-layer waste (CCLW) in diets for pregnant ewes fed cereal straw was evaluated. Five sheep were assigned to five diets containing, 0, 5.72, 11.37, 23.80, and 32.69% CCLW in a 5x5 Latin square design. Water intake, feed intake and feces output were measured. Feed and feces were analyzed for dry matter, crude protein, acid detergent fiber (ADF), neutral detergent fiber (NDF), organic matter, hemicellulose and minerals. Thus, nutrient digestibility and nitrogen balance could be calculated. Forty dry, pregnant ewes in the last third of generation were assigned to four dietary treatments contained 0, 11.25, 22.08 and …

A Guide In Working With Elementary-Aged Navajo Children Of Alcoholic Parents, George Ray Henry

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

Programs which provide intervention services for children of alcoholics are very new and in their developing stages nationwide. Despite this, the need for such programs exists, particularly on the Navajo Reservation. All available literature was reviewed that relates to the state-of-the-art in programming for intervention with children of alcoholic parents. Programs in use with children are described and the rationale for adapting such programs for use with Navajo children is discussed. A Navajo intervention pilot program for children of alcoholics is outlined.

Seasonal Variation In The Species Composition, Abundance, And Size-Frequency Distribution Of Zooplankton In Bear Lake, Utah-Idaho, Edmundo G. Moreno

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bear Lake, a large oligotrophic lake (282 km²), was studied from October 1986 to December 1987 to determine the temporal changes in the zooplankton assemblage at one site in the pelagic zone and one in the littoral area. In this study, species composition, abundance, biomass, and size frequency distribution were determined. Additionally, chlorophyll a, water transparency, and temperature and oxygen profiles were measured to help interpret zooplankton changes during the study.

The zooplankton species assemblage comprised eight species of cladocera, seven species of copepods, and five species of rotifers. The abundance and biomass of the zooplankton assemblage, particularly …

Diel Vertical Migration And Feeding Of Underyearling Bear Lake Sculpin Cottus Extensus (Pisces, Cottidae), Darcy Neverman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Underyearling Bear Lake sculpin exhibit a diel pattern of vertical migration throughout the pelagic region of Bear Lake (Utah-Idaho) until they are approximately 22 mm standard length. Individuals move from the bottom of the lake (5° C) during the day into the water column (13-16° C) at night. The migration, however, is not related to feeding. Although the dominant copepod in the water column, Epischura nevadensis, do undergo a similar diel vertical migration, stomach analysis of juvenile sculpin captured by trawling shows that they do not feed in the water column. Instead, from July through October, their diet is dominated …

Immunologic, Hematologic, And Endocrine Responses To Subacute And Subchronic Exposures To Graded, Subanesthetic Levels Of Nitrous Oxide In Cd-1 Mice, Charles E. Healy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Nitrous oxide (N₂O) oxidizes vitamin B12. disrupting deoxyribonucleic acid (DNA) synthesis. Occupational exposures to subanesthetic levels of the gas have been documented that may result in suppressed proliferative cell activities. Male CD-I mice were exposed to 0, 50, 500, and 5000 parts of N₂O per million parts of air (ppm) for 6 hr/day, 5 days/week for 2 and 13 weeks. Splenic lymphocytes were assayed for responsiveness to mitogens and for the ability to produce interleukin-2 (lL-2) . Tritiated-thymidine ([³H]-TdR) uptake was measured in CD-I splenic lymphocytes cultured in a mixed-lymphocyte culture (MLC). Cytolytic cell …

A Procedure For Developing A Carcass Merit Program For The Pork Industry, James Allen Burrow

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A stratified sample of 420 market hogs representing the seven 10- pound incremental carcass weight classes from 140 lbs. to 210 lbs., and the nine last rib back fat classes from less than .8 inches to 1.5 inches, or greater, within each weight class were analyzed to determine carcass value and yield of wholesale cuts. Simple correlation coefficients were calculated between each of the carcass measurements. The carcass yield data were manipulated by multiple regression procedures to achieve a series of equations for predicting the weights of the primal cuts. The benefits of being able to predict the weights of …

Factors Affecting The Long-Term Market And Profit Potential Of The Utah Apple Industry, Jodie R. Harris

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Utah apple industry is a small competitor in a major market. Efforts were made to analyze the long-term market and profitability potential of the industry. This study consisted of two parts, whole farm simulations and a consumer preference survey.

A whole-farm simulation model (FLIPSIM) was used to evaluate and test variations in price, debt load and sizes of Utah apple production units. These variations examined the effects of various possible market and financial conditions that producers could face given the current situation of the apple industry. FLIPSIM was used to demonstrate the stochastic nature of prices and yields of …

The Feasibility Of Concurrent Enrollment Of High School Students In College-Level Introductory Plant Science, Gregory H. Egan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study was to test the feasibility of allowing concurrent enrollment in the College of Agriculture to selected high schools in the state of Utah. "Introduction to Agricultural Plant Science" (Plant Science 100) was the course being tested. A purposive sampling technique was used to identify four vocational agriculture programs to participate. There were 86 high school students in the study and 38 college students who took the course on campus at Utah State University.

In this study, 47.7% of the high school students passed the course with a 70% average or above. Comparisons between high school …

Probability Of Discrete Failures, Weibull Distribution, Mary Jo Hansen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The intent of this research and these is to describe the development of a series of charts and tables that provide the individual and cumulative probabilities of failure applying to the Weibull statistical distribution. The mathematical relationships are developed and the computer programs are described for deterministic and Monte Carlo models that compute and verify the results. Charts and tables reflecting the probabilities of failure for a selected set of parameters of the Weibull distribution functions are provided.

The Effectiveness Of Language Intervention With Preschool Handicapped Children: An Integrative Review, Beverly Marie Poirier

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Controversies surrounding language intervention for preschool children have primarily focused on specific issues about which approach is better than another. However, most researchers consider language intervention to be effective--even though many studies yield conflicting findings. Previous reviews on language intervention added little to resolving the controversies because of inadequate sampling procedures and insufficiently addressing methodological issues. A more systematic review of prior research was needed to clarify the status of the language intervention literature. The purpose of this study was to conduct a comprehensive integrative review of the primary research on language using a meta-analysis approach to determine the relative …

The Development Of The Stress-Response Scale For Adolescents, Steven Curtis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Adolescence is an important period in the life cycle for which to study stress, due to the many involved developmental changes that require adaptation. This adaptation can be very stressful and result in pathology. Stress is defined as a "process" involving a continual transaction between stressors in the environment, mediating variables, and stress responses.

The Stress-Response Scale for Adolescents (SRSA) was developed to measure self-perceived stress responses of those between the ages of 14 to 20. The SRSA's development involved three studies. Study 1 involved item selection, scale construction, item reduction, and estimations of internal consistency and validity. Truthfulness items …

Office Signs: Reflectors Of Organizational Culture, Melvin Leon Jeppson

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

Social scientists widely believe that symbols can reveal important information about personalities, values, beliefs and characteristics of the communicator. Although scholars from fields such as semiology, psychology, sociology and anthropology have analyzed symbols and the messages they reveal as cultural indicators, few communication researchers have studied organizational symbols as organizational cultural indicators. In an article entitled, "Organizational Symbolism: A Topic to Expand Organizational Analysis," Dandridge, Mitroff and Joyce chastened communication researchers for overlooking a wealth of organizational data available through the study of organizational symbols. Stephen R. Barley supported these claims when he wrote that culture is embodied in and …

Soil Temperature Influence On Water Use And Yield Under Variable Irrigation, Jon M. Wraith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The need for efficient use of water resources has increased the importance of optimum soil water usage in agricultural systems. Soil temperature has been shown to be important in influencing the early development of many plant species. Many agricultural regions have suboptimal soil temperature regimes for plant growth, and some cultural practices have been shown to reduce near-surface soil temperatures. The seasonal influence of soil temperature on soil water extraction and aboveground and belowground plant growth under variable irrigation was investigated at the USU Greenville Farm in Logan, UT. Soil surface mulches and buried heat cables were used to modify …

Cornerstone For Growth: How Minorities Are Vital To The Future Of Newspapers, Ted Pease

Journalism and Communication Faculty Publications

A comprehensive newspaper industry report on minority demographics recommends that American newspapers turn to minority readers, employees and advertisers to improve readership rates and stimulate stagnant circulation growth.

Kerner Plus 20: Minority News Coverage In The Columbus Dispatch – Acomparative Content Study, Ted Pease

Journalism and Communication Faculty Publications

An examination of news content about minorities in the Columbus Dispatch finds little change in amount of coverage between 1965 - three years before the Kerner Commission Report - and 1987 but some improvement in the kind and tone of minority coverage.

Utah Science Vol. 50 No. 1, Spring 1989

Utah Science

2 FOOD, NUTRITION AND HEALTH R. G. Hansen An overview of some issues concerning diet and health.

6 PATTERNS OF FAT AND CHOLESTEROL CONSUMPTION OF AMERICAN WOMEN AND CHILDREN C. T. Windham Classifying people according to their eating habits will improve nutritional recommendations.

13 HEALTH PROMOTION AND DISEASE PREVENTION: A NUTRITIONAL SCORECARD N. B. Schvaneveldt For almost a decade, federal agencies have sought to help Americans prevent disease by improving nutrition. Some of the objectives have been met

18 ADEQUATE NUTRITION: AN EDGE FOR THE COLLEGIATE GYMNAST K. A. Gabel An educational program helps USU gymnasts eat and perform well. …

Agricultural Pesticide Hazard To Groundwater In Utah, Hubert Eisele, Majid Ehteshami, Richard C. Peralta, Howard M. Deer, Terry T. Tindall

Civil and Environmental Engineering Faculty Publications

We gratefully acknowledge the funding support of the Utah Department of Agriculture and the following offices at Utah State University. The Department of Agricultural and Irrigation Engineering, the International Irrigation Center, the Department of Animal, Dairy and Veterinary Sciences, the Department of Soil Science and Biometerology, and the University Extension Services.

Olfactory And Nasal Respiratory Epithelia, And Foliate Taste Buds Visualized With Rapid-Freeze Freeze-Substitution And Lowicryl K11m Embedding. Ultrastructural And Initial Cytochemical Studies., Bert Ph. M. Menco

Scanning Microscopy

Rat olfactory and respiratory epithelia and Rhesus monkey taste buds were studied with rapid-freeze, acetone/0.1% uranyl acetate freeze-substitution and low-temperature Lowicryl K11M embedding, usually in the absence of other chemical fixation and cryoprotection procedures. Ultrastructural features of mucus, cytoplasm, including cytoskeletons, and membranes were better retained than with conventional methods. Some major examples: The mucus of the olfactory epithelium consisted of a single layer; that of the respiratory epithelium had an electron-opaque sol layer surrounding cilia and microvilli below a thin laminated electron-lucent gel layer. Taste-bud pores displayed a foam-like opaque secretory product, resembling the contents of secretory granules within …

Solution-Mediated Transformation Of Octacalcium Phosphate (Ocp) To Apatite, R. Z. Legeros, G. Daculsi, I. Orly, T. Abergas, W. Torres

Scanning Microscopy

OCP crystals were hydrolyzed in solutions containing Ca²⁺, Mg²⁺, HPO₄^2-, CO₃^2-, F^-, citrate or P₂O₇ ions. Products of hydrolysis were analyzed using scanning (SEM) and transmission (TEM) electron microscopy, infrared spectroscopy and x-ray diffraction.

Results demonstrated that the OCP to Apatite (AP) transformation is influenced by: (1) types of ions in solution: inhibited by Mg²⁺, citrate or P₂O₇^4-; facilitated by F^-, CO₃^2-, HPO₄^2- or Ca²⁺ ions; (2) ionic concentrations; (3) …

Interpretation Of Structural Patterns Appearing On Corrosion Casts Of Small Blood And Initial Lymphatic Vessels, A. Castenholz

Scanning Microscopy

Structures imprinted on the corrosion casts of blood and lymphatic microvessels are examined by correlative scanning electron microscopy of corroded casts and fixed tissue. Replicas of the endothelial nuclear portions and cell boundaries and the plastic bands surrounding the casts of terminal blood vessels are demonstrated. In small lymphatics the replication of valve structures, interendothelial open junctions and direct prelymphatic connections is shown. The different imprint patterns are examined in regard to their morphological significance and under methodical aspects.

Determination Of Protein, R. Reichelt, A. Engel

Scanning Microscopy

Elastic and inelastic dark-field micrographs simultaneously recorded by the scanning transmission electron microscope (STEM) provide structural and quantitative chemical information at a spatial resolution of some nanometers. Simultaneous acquisition is essential as it warrants: (i) the geometrical identity of picture elements (pixels) in these micrographs, and (ii) the identity of recording conditions (focus, electron dose) for the elastic and inelastic images. Suitable off-line processing of such multichannel images allows the concentration of protein or nucleic acid within embedding material to be evaluated. In addition, location and number of chemical elements such as phosphorus can be determined. Theoretical sensitivity is a …

Architecture Of The Medial Smooth Muscle Of The Arterial Vessels In The Normal Human Brain: A Scanning Electron-Microscopic Study, Toshitaka Shiraishi, Saburo Sakaki, Yasuo Uehara

Scanning Microscopy

The architecture of the medial smooth muscle of arterial vessels in normal human brains was investigated using scanning electron microscopy. We could divide the arterial vessels into four subdivisions according to the number of the circular muscle cells. The arteries ( > 100 μm in diameter) had 4-20 layers of circular smooth muscle cells; individual circular muscle cells were spindle-shaped and occasionally had branches at their ends. Multidirectional muscle cells were observed in the medio-adventitial border only at the branching sites in large arteries (>300 μm), but at both branching and non-branching sites in the small arteries (100-300 μm). The …

The Response Phase - The First Six Hours After Acute Airway Injury By So2 Inhalation: An In Vivo And In Vitro Study, W. C. Hulbert, S. F. P. Man, M. K. Rosychuk, G. Braybrook, J. G. Mehta

Scanning Microscopy

We have identified an airway epithelial response following acute injury that cannot be termed 'repair' or regeneration. It precedes these well characterized events and it is termed the 'response phase'. We tested the hypothesis that for the first 6 h following acute injury to the tracheal mucosa, the initial cellular events of the response phase will continue as in vivo even if the tissue is maintained in vitro in an Ussing chamber. The tracheal mucosa of anesthetized, intubated mongrel dogs was injured by the inhalation of SO₂ 500 ppm for 1 h (7 dogs); controls (3 dogs) breathed filtered, …