Digital Commons Network^™

High Quality Zno Epitaxial Grown By Plasma Assisted Molecular Beam Epitaxy, Yun Zhang

Theses and Dissertations

Described in this thesis are the growth and characterization of high quality ZnO epitaxy layers.Zinc oxide (ZnO) epitaxy layers were grown on sapphire and epi-GaN substrates respectively, using plasma assisted molecular beam epitaxy (MBE) . Various growth conditions, such as growth temperature, II/VI ratio, and buffer layers, were employed to optimize the quality of the ZnO film. The subsequent characterization of the films was carried out to evaluate the surface, optical and crystalline properties of the film, using AFM, SEM, PL and XRD techniques. It was found out that the high quality of the ZnO film was grown on epi-GaN …

Narrating Friendship: The Reciprocal Relationship Between J.B. Childers And Myself, James Thomas Engelmann

Theses and Dissertations

For the past ten months I have explored the life of a deceased artist named Joseph Barley "J.B." Childers. In the graduate catalog Gregory Volk summarizes Childers as, "an alienated Korean War Veteran, who took up painting as a refuge from his troubles, and who also doesn't exist. Childers who is naturally right-handed, painted everything left-handed because of a war wound, and so Engelmann, who is left-handed, painted with his right hand, which is quite a limitation." Of course, there's more to the story than that and the writings that follow will explain many of my reasons for pursuing this …

Effects Of Emphysema And Chronic Hypoxemia On Skeletal Muscle Oxygen Supply And Demand, John D. Lowman Jr.

Theses and Dissertations

Skeletal muscle dysfunction in chronic obstructive pulmonary disease (COPD) is a condition in which peripheral skeletal muscle undergoes myopathic changes which impair muscle function, limit physical performance, and can lead to significant disability. While the etiology of the dysfunction is unknown, this study was conducted to test the hypothesis that chronic hypoxemia leads to alterations in oxygen transport and muscle function. A primary objective was to validate elastase-induced emphysema in rats as an animal model of skeletal muscle dysfunction in COPD.Arterial blood gases were used to determine the severity of hypoxemia and sodium dodecyl sulfate- polyacrylamide gel electrophoresis was used …

Growth And Deterioration, Brooke A. Hine

Theses and Dissertations

I use porcelain clay because it allows me to focus on the subtle color shifts between white, beige, and gray. The forms I make in clay are associated with tangled roots, naked tree branches, hollow logs, and bones. I reveal this with a dense mass of curvilinear hollow forms that stack into a rhythmic linkage. They twist and turn, relying on gravity to dictate their structure within the installation. The ends of some are closed while others remain open to expose their interior. The tearing and perforations on the surface of each piece are employed to emphasize deterioration. In opposition …

Is Number Of Pregnancies A Risk Factor For Heart Attack In Women?, Pavan Kumar Irukulla

Theses and Dissertations

Background: Studies regarding number of pregnancies and coronary heart disease have shown inconsistent results. In the present study, we assessed the association between number of pregnancies and heart attack (HA) in women.Methods: Using data from NHANES III a cross sectional data analysis of 10634 women aged 17 and above was conducted. We considered socio-demographic factors and other potential risk factors including physical activity, smoking, alcohol, diabetes, hypertension, hypercholesterolemia, BMI, age, and family history of heart attack. We conducted Bivariate analysis to determine prevalence and crude odds ratios. Multivariate logistic regression analysis was used to adjust for confounding variables using SPSS. …

The Social Network And Attachment Bases Of Loneliness, David M. Ouellette

Theses and Dissertations

This thesis tests Robert S. Weiss's 1973 theory of loneliness, which claims two types of loneliness: emotional and social. Emotional loneliness is the affective reaction to the absence of a close attachment bond. Social loneliness stems from inadequate integration into a social network. Undergraduate residents of a university dormitory completed questionnaires on loneliness, attachment, personality, and relationships with other dorm residents. Patterns of relational ties among participants were evaluated using social network analysis, specifically density, tie strength, and four forms of centrality. Results reveal that, while controlling for neuroticism, the network measure of outdegree and the two attachment dimensions accounted …

Evaluating A Day Treatment Program For Children With Serious Emotional Disorders, Nicole Lynn Lee

Theses and Dissertations

The current study used a longitudinal design to evaluate a day treatment program for children with serious emotional disorder located in Richmond, Virginia (N = 101). Child and Adolescent Functional Assessment Scale (Hodges, 1984, 1999) results were analyzed from children who had attended the program for at least six months. Repeated Measures Analysis of Variance tests indicated that children attending YDT for nine months improved their overall functioning F(2, 217) = 26.23, p = .01 as well as their functioning at school F(3,279)= 10.822, p =.01, home F(3, 244) = 6.120, p = .01, and in the community F(3, 238) …

Children With Autism Spectrum Disorders: An Investigative Analysis Of Their Access To Dental Care, Chad Wallace Ellsworth

Theses and Dissertations

Purpose: The purpose of this study was to assess the utilization of dental services for children with autism spectrum disorders and identify barriers these children face when accessing dental services in the state of Virginia. Methods: A survey was mailed to families in the state of Virginia that care for at least one child with the neuro-developmental disorder on the autism spectrum scale. The mailing list was obtained from "The Autism Program of Virginia." This list contains the names of families/guardians of children with autism spectrum disorders. These individuals live throughout the State of Virginia. This project analyzed survey questions …

Explaining Retention In Community-Based Movement Organizations, Sarah Kathryn Diehl

Theses and Dissertations

An individual's initial acceptance of a recruitment pitch from a community-based social movement organization is usually based upon minimal information about the group and its efforts. It is only during the subsequent period of orientation that new members begin to learn more about the organization. During this period, the retention of new members is dependent on the successful alignment of individual and organizational frames. The failure to achieve such an alignment is likely to result in the new member's departure from the organization. This study explores the frame alignment process during early orientation to community-based SMOs. Using nineteen qualitative interviews …

Determinants Of Prenatal Care And Supplement Use: The Case Of Honduras, Catherine E. Henze

Theses and Dissertations

Context: Literature suggests that prenatal care and prenatal supplement use improves pregnancy outcomes. However, we do not know the factors associated with prenatal care and supplement use in Honduras.Objective: To identify characteristics of Honduran women who are the least and most likely to use prenatal care and supplements.Methods: Data from a 2001 Honduras cross-sectional survey of women was used to assess their use of prenatal care and supplements. All data was weighted, resulting in a sample size of n = 5647 women who had a live birth since January 1996. Bivariate and multivariate analyses were used to examine factors associated …

Gan Epitaxy On Melt Grown Thermally Prepared Bulk Zno Substrates, Xing Gu

Theses and Dissertations

Different methods were developed for the preparation of bulk ZnO substrates. Remarkable improvement on the surface, optical and crystalline quality of the bulk ZnO substrate was achieved. ZnO substrates with an atomically flat surface exhibiting terrace-like features were used as a substrate for GaN grown by MBE. High-resolution x-ray diffraction and low temperature PL results show that similar high quality GaN layers can be achieved on both annealed O-face and Zn-face ZnO substrates. The prospect of the device applications of GaN epitaxy on ZnO, including AlGaN/GaN MODFET structure on ZnO and GAN/ZnO based p-n junction were discussed.

Pcr Detection Of Streptococcus Mutans And Streptococcus Sobrinus In Dental Plaque Samples From Low, Moderate, And High Caries Risk Children, Ajit A. Patel

Theses and Dissertations

Purpose: The purpose of this study was to correlate the presence of Streptococcus mutans and Streptococcus sobrinus with the incidence of dental caries in children as detected by the polymerase chain reaction (PCR).Methods: Subjects between the ages 2 to 16 years of age were used in this study. After the subjects received a dental examination, dental plaque samples were collected by rubbing a toothpick on the buccal surface of the most posterior tooth in each quadrant of the mouth. Children were grouped into low, moderate, and high caries risk categories by two different Caries Risk Assessment Tools (CAT 1 and …

Reevaluating Course Completion In Distance Education—Avoiding The Comparison Between Apples And Oranges, Scott L. Howell, R. Dwight Laws, Nathan K. Lindsay

Faculty Publications

Critics of distance education frequently assert that completion rates are lower in distance education courses than in traditional courses. Such criticism comes despite sparse and inconclusive research on completion rates for distance and traditional education courses. This article reviews some of the existing research and then describes some of the caveats and complexities in comparing completion rates in traditional and distance education. Analysis reveals that numerous factors make comparison between these two formats difficult, if not impossible. Problems include limitations in the research design itself, differences in student demographics, and inconsistent methods of calculating and reporting completion. After exploring these …

Ten Efficient Research Strategies For Distance Learning, Thomas C. Wright, Scott L. Howell

Faculty Publications

Today's distance education administrator, frequently with an expertise in another academic discipline, is also supposed to be a distance education scholar. This expectation results from the recent interest in distance learning that nearly all institutions of learning and disciplines of study have shown. More research, studies, journals, and essays about distance education also exist than at any other time.

A distance education administrator and an education research librarian at Brigham Young University have teamed up to identify ten pragmatic research strategies to help new, busy, and even a few experienced distance education administrators stay current in their field and successful …

A Case Study In Multinational Corporate Accountability: Ecuador's Indigenous Peoples Struggle For Redress, Maxi Lyons

Denver Journal of International Law & Policy

No abstract provided.

Perspectives On The Bush Administration's New Immigrant Guestworker Proposal: Immigrant Labor Issues, Patricia Medige

Denver Journal of International Law & Policy

No abstract provided.

Perspectives On The Bush Administration's New Immigrant Guestworker Proposal - The Mexican Perspective, Mariana Diaz

Denver Journal of International Law & Policy

No abstract provided.

Perspectives On The Bush Administration's New Immigrant Guestworker Proposal, Kirpal Singh

Denver Journal of International Law & Policy

No abstract provided.

Perspectives On The Bush Administration's New Immigrant Guestworker Proposal: The Time For Immigration Reform Is Now, Regina Germain

Denver Journal of International Law & Policy

No abstract provided.

Vol. 33, No. 1: Title Page, Denver Journal Of International Law & Policy

Denver Journal of International Law & Policy

No abstract provided.

Collective Security And The United Nations, University Of Denver College Of Law, February 28, 2004, Mark Udall

Denver Journal of International Law & Policy

No abstract provided.

Preemptive And Preventive Use Of Force, Collective Security, And Human Security, Ved P. Nanda

Denver Journal of International Law & Policy

No abstract provided.

Vol. 33, No. 1: Table Of Contents, Denver Journal Of International Law & Policy

Denver Journal of International Law & Policy

No abstract provided.

Preemptive Or Preventive War: A Discussion Of Legal And Moral Standards, Steven J. Barela

Denver Journal of International Law & Policy

No abstract provided.

Collective Security With A Human Face: An International Legal Framework For Coordinated Action To Alleviate Violence And Poverty, Jennifer Moore

Denver Journal of International Law & Policy

No abstract provided.

Human Security, Humanitarian Intervention, And Third World Concerns, Priyankar Upadhyaya

Denver Journal of International Law & Policy

No abstract provided.

Human Security And Social Development, John F. Jones

Denver Journal of International Law & Policy

No abstract provided.

The Role Of The Media, Law, And National Resolve In The War On Terror, Robert Hardaway

Denver Journal of International Law & Policy

No abstract provided.

The Imminent Threat Requirement For The Use Of Preemptive Military Force: Is It Time For A Non-Temporal Standard, Mark L. Rockefeller

Denver Journal of International Law & Policy

No abstract provided.

Preemptive Self-Defense In An Age Of Weapons Of Mass Destruction: Operation Iraqi Freedom, Charles Pierson

Denver Journal of International Law & Policy

No abstract provided.