Polypharmacy, the simultaneous use of multiple drugs to treat a single ailment or condition, is a major health problem among the elderly population that contributes to adverse drug side events, health risks, hospital readmissions, morbidity, and mortality. Therefore, a staff education program geared toward reduction of such adverse drug events was implemented at a single site. The purpose of the project was to determine if the staff education program would increase knowledge of adverse drug events due to geriatric polypharmacy. The Orem theory provided the theoretical support for the project, and the Iowa model guided the evidence-based practice change process. Topics covered in the education program included medication safety, appropriate drug usage, medication interactions, and other use issues of commonly prescribed drugs for elderly patients. Twenty staff members from 1 assisted-living facility were recruited for the education intervention. Assessments of staff member knowledge were collected before and after the education intervention. Descriptive statistics were used to compare preintervention and postintervention knowledge. Scores on the pretest ranged from 10% to 50% correct on the 10 items, and posttest scores ranged from 40% to 70% correct on the same items. The project is expected to produce social change due to reduced incidence of geriatric polypharmacy and, ultimately, decreased adverse drug effects resulting in patient morbidity, hospitalization, and mortality.

Adequate medication management is a focus of effective care that is often overlooked in caring for adults with comorbid psychiatric and physical conditions, especially in patients who are treated by multiple care providers and have a variety of health issues at the same time. The purpose of this project was to develop evidence-based policies and practice guidelines to reduce polypharmacy in elderly patients in a rural outpatient psychiatric clinic. Bandura's self-efficacy theory was used to inform the project for its value in assessing motivation, capacity for self-regulation, and perceptions of individual ability. An interdisciplinary team of stakeholders explored best practices for electronic health records (EHR) in a rural mental health facility, created policy and practice guidelines, and developed implementation and evaluation plans to guide the initiative as it moves forward. The team included physicians, psychiatrists, psychologists, nurse practitioners, nursing support staff, social workers, and substance abuse counselors. The team explored approaches for implementing EHR-based medication management based on research in the current literature and goals/objectives of each department. Team members identified major issues and proposed guideline changes based on evidence in their own fields. The team then collaborated to develop policies and practice guidelines in a series of meetings designed to build consensus for supporting a unified set of products to be accepted by all departments. The resulting policies and practice guidelines are accompanied by plans for implementation and evaluation that provide the institution with a comprehensive solution to polypharmacy in elderly patients. This project may improve overall quality of care by reducing medication and preventing health complications related to polypharmacy.

This three-paper dissertation addresses the manner in which students’ intrinsic motivation to engage in academic tasks changes during the four years of college. The first paper examines the variance of students’ academic motivation during college. The second paper analyzes whether good practices in undergraduate education promote academic motivation, and the third paper seeks to determine whether those good practices benefit certain students more than others. Implications are explored in each paper.

The use of composite materials in aerospace, electronics, and wind industries has become increasingly common, and these composite components are required to carry mechanical, electrical, and thermal loads simultaneously. A unique property of carbon fiber composites is that when an electric current is applied to the specimen, the mechanical strength of the specimen increases. Previous studies have shown that the higher the electric current, the greater the increase in impact strength. However, as current passes through the composite, heat is generated through Joule heating. This Joule heating can cause degradation of the composite and thus a loss in strength. In order to minimize the negative effects of heating, it is desired to apply a very high current for a very short duration of time. This thesis investigated the material responses of carbon fiber composite plates subjected to electrical current pulse loads of up to 1700 Amps. For 32 ply unidirectional IM7/977-3 specimens, the peak impact load and absorbed energy increased slightly with the addition of a current pulse at the time of an impact event. In 16 ply cross-ply IM7/977-2 specimens, the addition of the current pulse caused detrimental effects due to electrical arcing at the interface between the composite and electrodes. Further refinement of the experimental setup should minimize the risk of electrical arcing and should better elucidate the effects of a current pulse on the impact strength of the specimens.

Ranchers, farmers, land managers, and resource management agencies have been plagued with various types of invasive weeds for decades, ultimately affecting millions of acres of viable wildlife habitat, grazing, and recreational opportunities. Invasive weeds often have nutritional contexts that negatively affect animals in some way, increasing the incentive to avoid consuming it by various animal species and domestic livestock. With the current amount of land infested with this weed, and the limited knowledge of the reason for avoidance, the underlying causes of livestock avoidance require in-depth and fundamental understanding. In my MS program, I sought to explore the relationship of plant and herbivore interactions in regards to grazing, animal diet selection through the use of supplementation, along with understanding the chemical compounds that cause avoidance of medusahead by domestic animals. This research will help us better understand the reasoning behind grazing avoidance and preference, and provide further understanding and management approaches using livestock as an alternative management tool in hopes of creating sustainable ecosystems with complementary benefits for soils, plants, animals, and land managers.

As college classrooms increase in size, the challenge of keeping students engaged in the course becomes a greater challenge. Instructors are burdened with the task of managing larger classrooms while maintaining high levels of student participation. Research has shown that students tend to hide and are less likely to participate in larger classrooms. Research has also shown that student participation is affected by fear of judgment from their peers and the instructor. However it is unclear whether this fear is tied to students’ perceived ability or self-efficacy. In addition, it may be that students’ perception of the instructor may affect their class participation. The present study attempted to disentangle how these factors work together to influence student engagement in the classroom. The present study was conducted over the fall 2013 semester. Two hundred forty four students were recruited from three introductory psychology courses. At the beginning of the semester, students were asked to report their perception of their academic ability (academic self-efficacy; ASE) and demographic information. During the last week of instruction, students were asked to self-report their ASE, level of course engagement, and perceptions of the instructors teaching self-efficacy (PIE). After grades were posted, the final grades for each student were collected. Three predictions were explored: (a) changes in ASE would predict students’ course grade, (b) the relationship between student ASE and student grades would be mediated or moderated by student engagement, and (c) PIE would moderate the relationship between students’ ASE and student engagement. Two of the predictions were supported. Changes in ASE did predict students’ course grades such that increases in ASE predicted increases in grades as well. Student engagement partially explained the relationship between ASE and grades. Closer examination showed that performance (wanting good grades in the course) accounted for the relationship between ASE and course grades. The final prediction could not be evaluated because PIE was not related to ASE. However results show that PIE does significantly impact student engagement in the course. This adds to previous literature and shows that perceptions of an instructor’s teaching self-efficacy can influence how students engage in the course. These results also align with previous research that has shown that students with higher sense of ASE and course engagement have better academic outcomes.

Soft and deformable silicone rubber spheres ricochet from a water surface when rigid spheres and disks (or skipping stones) cannot. This dissertation investigates why these objects are able to skip so successfully. High speed cameras allow us to see that these unique spheres deform significantly as they impact the water surface, flattening into pancake-like shapes with greater area. Though the water entry behavior of deformable spheres deviates from that of rigid spheres, our research shows that if this deformation is accounted for, their behavior can be predicted from previously established methods. Soft spheres skip more easily because they deform significantly when impacting the water surface. We present a diagram which enables the prediction of a ricochet from sphere impact conditions such as speed and angle. Experiments and mathematical representations of the sphere skipping both show that these deformable spheres skip more readily because deformation momentarily increases sphere area and produces an attack angle with the water which is favorable to skipping. Predictions from our mathematical representation of sphere skipping agree strongly with observations from experiments. Even when a sphere was allowed to skip multiple times in the laboratory, the mathematical predictions show good agreement with measured impact conditions through subsequent skipping events. While studying multiple impact events in an outdoor setting, we discovered a previously unidentified means of skipping, which is unique to deformable spheres. This new skipping occurs when a relatively soft sphere first hits the water at a high speed and low impact angle and the sphere begins to rotate very quickly. This quick rotation causes the sphere to stretch into a shape similar to an American football and maintain this shape while it spins. The sphere is observed to move nearly parallel with the water surface with the tips of this “football” dipping into the water as it rotates and the sides passing just over the surface. This sequence of rapid impact events give the impression that the sphere is walking across the water surface.

Despite the number of teen pregnancy studies in the past, there is a dearth of empirical data relevant to the issue of psychosocial and/or developmental changes in adolescent mothers. Most previous studies have addressed the negative and devastating impact of teen pregnancy on adolescent development. The premise of these early studies was that adolescents have pathological reasons for becoming pregnant. Contrary to these studies, an underlying assumption of this study was that teen pregnancy as a life crisis could entail the same facilitating and inhibiting factors that emerge with other adolescent life crises. Based on Erikson's theoretical framework, this study investigated the impacts of adolescent pregnancy and childbearing experiences on adolescent identity formation and on psychosocial stage development. Data were collected from 64 (34 childbearing, 30 nonpregnant) high school adolescent girls before and after childbirth. The EOM-EIS (Extended Objective Measure of Ego Identity Status) and EPSI (Erikson Psychosocial Stage Inventory) were used in this study. Analyses of pretest data showed that there were no differences between pregnant and nonpregnant adolescents. Results indicated that there were no differences on psychosocial variables between pregnant adolescents and nonpregnant adolescents with similar demographic backgrounds. The childbearing adolescents demonstrated decreases in foreclosure scores on identity status and increases in trust, industry, and intimacy scores on psychosocial stages. The results indicate that childbearing experiences may have enhanced the adolescents' ability to resolve their earlier developmental stage crises and conflicts.

Researchers and clinicians have postulated that the thin-ideal image portrayed in the media leads to body dissatisfaction and negative self-appraisals among women; however, there is little research that has directly examined the effects of these images on women. The purpose of this research investigation was to experimentally examine the effects of exposure to the thin-ideal on women's affect, self-esteem, body satisfaction, and level of internalization of the thin body image. This study also assessed how the thin-ideal image differentially impacted women with a diagnosed eating disorder. College women (N = 145) were randomly exposed to photographs from popular magazines containing either thin-ideal images or neutral images (nonmodels). The results indicated that exposure to the thin-ideal images produced body dissatisfaction, negative mood states, and lowered self-esteems. It was also expected that exposure to the thin body image would result in higher levels of internalization of the thin-ideal; however, the results indicated that women exposed to these images had significantly lower levels of internalization compared to women in the neutral condition. The results also suggest that women with eating disorders exhibited significantly more body dissatisfaction and depression after exposure to the thin-ideal relative to all other subgroups of women. Implications for prevention of eating disorders and areas of future research are discussed.

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.