It has only been recently that research in childhood psychopathology has focused on a group of disorders referred to as internalizing disorders. Internalizing disorders can include such problems as depression. anxiety, social withdrawal, and somatic complaints. Even though research has begun to focus on internalizing disorders with majority children. there has been very little research conducted on ethnic minority children, Native American children in particular. The present study involved obtaining a Native American sample and determining their internalizing symptomology utilizing the Internalizing Symptom Scale for Children (ISSC), the Reynolds Child Depression Scale (RCDS), and the State Trait Anxiety Inventory for Children (ST AIC). The study sample was compared to a matched normative sample from the ISSC database. Statistical procedures included bivariate correlations, analysis of variance (ANOV A), and discriminant function analysis. Correlations between the ISSC and the two comparison measures (RCDS and ST AIC) were in the expected direction and of moderate to strong magnitude. The total internalizing symptoms scores of the Native American (Lakota Sioux) sample were similar to those of a matched comparison group from the ISSC national normative database. However, the study sample evidenced a unique pattern of responses on the ISSC subscales, reporting lower rates of both internalizing distress and positive affect. Teacher nominations of potential "internalizers" proved to be a poor predictor of their self-reported symptoms. Implications of this study for clinical practice and future research directions in this area are discussed.

The purpose of this research project was to identify the extent that concrete resistivity measurements (bulk and/or surface) can be used as a performance based lab test to improve the quality of concrete in Utah bridge decks. By allowing UDOT to specify a required resistivity, concrete bridge deck quality will increase and future maintenance costs will decrease. This research consisted of two phases: the field phase and the lab phase. In the field phase, concrete samples were gathered from local concrete producers in Utah. These concrete samples were made with common concrete mixes used in bridge decks across the state of Utah. Testing multiple mix designs allowed the research team to investigate several variations of concrete constituents, for instance, water to cement ratio, common Utah supplementary cementitious materials, curing type, and aggregate type. Mechanical and durability testing was performed on concrete of different ages. These tests included strength, surface resistivity, bulk resistivity, rapid chloride permeability, and freeze and thaw tests. In the lab phase, one of the field mixes was selected as the control mix. This mix was then duplicated in the lab in order to see the performance differences of each mix in the controlled and field experiments. In addition, changes were made to the lab control mix, to see the effect of different materials on the resistivity and durability of concrete.

The purpose of this paper is to document the major reasons sheep producers are liquidating their business, and to provide some insight into the present use of land and labor resources taken out of sheep production, Data compiled for the study were obtained from personnel interviews of former sheep producers statistically selected from a master list of all producers who stopped sheep production from 1968 to June 1974. The general characteristics of Utah sheep ranches were presented followed by an analysis of producers who, and the reasons why, they sold their herds, The last section of the report documents the present use of resources taken out of sheep production.

An (e,2e) electron scattering spectrometer has been constructed and used for the first time to investigate the spectral momentum density of the valence bands of a solid target. This technique provides fundamental information about the electronic structure of both crystalline and amorphous solids. The three fundamental quantities, the band structure, electron density of states, and electron momentum distribution can be simultaneously derived from the measured (e,2e) cross section. A review of single electron and (e,2e) scattering theory is given with an emphasis on scattering from solids. The effects of multiple scattering are discussed and a method of deconvoluting those effects from the measured (e,2e) cross section is developed. There is a detailed description of the spectrometer design and operation with particular attention given to the electron optics and voltage distribution. The algorithms and software for computer aided data acquisition and analysis are also outlined, as is error analysis. The techniques employed in the preparation and characterization of extremely thin film samples of a-C and single crystal graphite are described An analysis of the data taken for a-C samples is complementary experiments and theory for graphite, diamond, and a-C which are given in a review of the literature. The existence of a definite dispersion relation ε(q) in amorphous carbon is demonstrated. The a-C band structure appears to be more similar to that of graphite than to that of diamond, however it differs significantly from both in some respects. The measured spectral momentum density seems compatible with a model of a-C based on small, randomly-oriented islands of quasi-2D graphite-like continuous random network structures. However, no definitive interpretations can be made until higher resolution experiments are performed on both a-C and single crystal graphite.

This thesis was undertaken in order to explore aspects of the impact of outdoor recreation on water quality. It begins with a discussion of the rationale for monitoring and controlling such environmental degradation. Following sections include an investigation of water quality characteristics particularly indicative of recreational impact, a discussion of the potential contributions of various recreation activities to water pollution, a literature survey, a guideline for planning and implementing a water quality surveillance program, and recommendations for further research. Material for the thesis came from library research and was augmented by the author's personal experience as a water quality research technician.

The objective in wheat hybridization primarily is to obtain new varieties which are of a greater agronomic value than existing varieties. Frequently, however, crosses which obviously will not produce superior commercial types are made and studied in order to obtain genetic information which may be useful to the breeder. This latter phase of breeding, i.e., the accumulation of genetic information, provides the basis for this study.

The urolithiasis condition investigated occurred at a "hard water" hatchery in Utah after the trout were changed from a meat diet to a commercial pelleted fish feed as a sole sustaining diet in 1961. Numerous diet modifications proved unsuccessful in preventing urolithiasis at the hatchery. It was eventually determined that different commercial diets resulted in varied percentages of trout developing urolithiasis. The urolithic deposits found in the kidney tubules were amorphous and composed of calcium phosphate (apatite) and an organic matrix. Bacterial contamination of the kidneys was not an important factor in the formation of urolithiasis. Rainbow trout containing urolithic deposits showed gradual deposit regression when transferred into a "softer" water supply. Pelleted experimental diets containing sodium bicarbonate and/or sodium fluoride were fed to two strains of rainbow trout reared in a "softer" water supply normally causing no urolithiasis problems. The diets with the sodium bicarbonate added resulted in a significant occurrence of urolithiasis when fed to trout for 30 days. The addition of sodium fluoride to the diet was not significant in producing urolithiasis in trout. One experimental diet (low sodium bicarbonate-sodium fluoride) and one strain of fish (Soap Lake) appeared to influence the number of trout developing urolithiasis although the increase was not significant. All levels of statistical significance were tested at the 5 percent level.

The purpose of this study was to investigate the prevalence rates and effects of child sexual abuse in both deaf and hearing individuals living in Utah. A total of 104 deaf and 69 hearing individuals responded to the survey. The survey inquired about participants' experiences with sexual abuse and their mental health status. The difference in rates of abuse between the two groups was not statistically significant. However, deaf individuals tended to be abused more often than hearing individuals. Deaf victims also experienced more severe forms of abuse and were abused more frequently than hearing victims. However, hearing victims experienced the use of force during abuse more often than deaf victims. The difference in mental health status between the deaf and hearing groups was not statistically significantly different. However, the difference between the total deaf group and the total hearing group was statistically significant, the deaf group reporting more problems than the hearing group.

Health-compromising behavior is a leading cause of death among American Indian (Al) adolescents. Examples of these behaviors include: smoking, alcohol consumption, drug use, and lack of seatbelt use. Theories that predict which Al youth are most at risk for executing these behaviors are needed. Social learning theory (SL T) has shown adolescents' behaviors are sometimes highly correlated with their parents' behaviors across different ethnic groups. However, there has been little previous research done with Als. The present study attempted to determine if SL T was applicable to Al adolescents and their parents with regard to four health-related behaviors: cigarette smoking, alcohol consumption, seatbelt use, and religiosity. The first three were chosen because of the high number of Al adolescent deaths associated with them. Religiosity was included because high religiosity scores have been shown to negatively correlate with health-compromising behaviors in some studies. The present study provided partial support for SL T when applied to Al youth. For example, there were positive correlations found between parents' smoking and if the youths have ever smoked regularly or smoke currently. Little support was found for SL T with regard to alcohol consumption (i.e., the overall correlation was not significant). The exception to this was when daughters were correlated with fathers. How often the father drank and if he binged were positively correlated with how often the daughter drank and if she ever binged. There were strong correlations between parents' seatbelt use and similar use of their adolescents, thus supporting the theory. Also, strong positive correlations were found between the religiosity of the parents' and the youth. Further, religiosity did show negative correlations with health-compromising behaviors among the youth. There was also a sex difference found, with female youth having stronger negative correlations than the male youth. There were 290 Al adolescents in this nationally representative sample, 136 mate and 154 female. All the behaviors were measured via self-report, as was the identification of the adolescent's ethnicity. Limitations of this research, implications for future research, and areas for prevention/intervention with Al youth at risk are discussed.

This thesis examines the evolution, applications, and statistical interpretations of DNA typing as a tool in the field of forensic science as well as in our criminal justice system. The most controversial aspect of DNA typing involves the determination of how likely it is that two people share the same DNA profile. This involves the use of population genetics and databases of allelic frequencies as well as some assumptions about population structuring.