Digital Commons Network^™

Genetic Diversity And Low Reproductive Success In Isolated Populations Of Utah Juniper (Juniperus Osteosperma, Cupressaceae), Loreen Allphin, Val J. Anderson, Amy F. Hunt

Faculty Publications

Utah juniper (Juniperus osteosperma) has greatly expanded its historical range in the western United States. Management plans for the species have focused on curtailing its encroachment into sagebrush and grassland communities. These plans often include burning or other methods of elimination. These methods may result in subdivision or fragmentation of existing juniper stands. We initiated a study at Dugway Proving Ground, a U.S. Army facility, to examine the effects of fragmentation on the reproductive success of Utah juniper in isolated populations. We used enzyme electrophoresis to quantify genetic variability in isolated populations. We also determined population reproductive success by examining …

Hiv/Aids Education: What African Youth Say Is Effective, Steven J. Hite, W. James Jacob, Stacey A. Shaw, Donald E. Morisky, Yusuf K. Nsubuga

Faculty Publications

This study on HIV/AIDS-education programs was conducted with the Uganda Ministry of Education and Sports in a national sample of 76 secondary schools in Uganda. Participants included secondary students (N=883) who critiqued their formal and informal school curricula and offered youth perspectives regarding what teaching mediums and programs of HIV/AIDS prevention are most effective. Results indicated that HIV/AIDS education is not taught in their respective school curricula. Students report on informal ways that are helpful in learning about AIDS, recommend changes to their school's curriculum, and report that reactions from various groups in their lives to HIV/AIDS education in their …

A Survey Of Dating And Marriage At Byu, Bruce A. Chadwick, Mindy Judd, Richard J. Mcclendon, Lauren Smith, Brent L. Top

Faculty Publications

A 2001 study of 1,000 young women attending four-year colleges and universities across the United States conducted by Norval Glenn and Elizabeth Marquardt found that “dating” has all but disappeared from American college campuses. Only half of the women reported they had been asked on six or more dates during their entire college career. In fact, one-third of the women had two or fewer dates during the same four years. Instead of dating, college students now “hang out” in mixed groups in a variety of settings including apartments, dormitory rooms, student centers, pizza parlors, coffee shops, and bars. From these …

The Effects Of Immediate And Delayed Feedback On Secondary Distance Learners, Duane C. Lemley, Richard Sudweeks, Scott L. Howell, R. Dwight Laws, Octavia Sawyer

Faculty Publications

This study explores the effects of immediate and delayed feedback for 2 noncohort groups of high school students enrolled in distance learning courses at Brigham Young University. One group received immediate feedback while the second group received delayed feedback. Those students receiving immediate feedback performed significantly better on final exams, but those who received delayed feedback completed courses in significantly less time. The findings promise to inform best practices for providing feedback to secondary students in a distance learning setting and also give cause for further research.

Evaluation Of An Adult Education Technology Program, Iwasan D. Kejawa

Theses and Dissertations

The purpose of this study was to evaluate the adult education technology program at a chartered alternative adult education center in Florida. The adult education center had a low rate of students passing the Florida Comprehensive Assessment Test (FCAT). This study examined the impact of the use of computer technology in an effort to improve student learning in mathematics, reading, and science. Computers at the institution were used by all students for tutorials to prepare them for the FCAT and to obtain a high school diploma. The research questions for this study were as follows:

1. Is the education technology program …

Towards Efficient Computation Of Quality Bounded Solutions In Pomdps: Expected Value Approximation And Dynamic Disjunctive Beliefs, Pradeep Reddy Varakantham, Rajiv Maheswaran, Tapana Gupta, Milind Tambe

Research Collection School Of Computing and Information Systems

While POMDPs (partially observable markov decision problems) are a popular computational model with wide-ranging applications, the computational cost for optimal policy generation is prohibitive. Researchers are investigating ever-more efficient algorithms, yet many applications demand such algorithms bound any loss in policy quality when chasing efficiency. To address this challenge, we present two new techniques. The first approximates in the value space to obtain solutions efficiently for a pre-specified error bound. Unlike existing techniques, our technique guarantees the resulting policy will meet this bound. Furthermore, it does not require costly computations to determine the quality loss of the policy. Our second …

Mr. Del Elsworth, A Claims Adjuster, Lived In North Dakota, Where He Tried To Figure Out The Meanings Of Some Well-Known Haiku, Michael Theune

Scholarship

No abstract provided.

Not For The King, But For God And Country: Scandinavians And Ethnic Identity During The American Civil War, Anders Rasmussen

The Bridge

The history of the United States is essentially a history of immigration. From the Spanish arrival in Florida in 1565 to present-day America, immigration has been a continuous factor in the history of the United States, and it has repeatedly challenged notions of what it means to be American. Among the many immigrant groups which came to the United States were the Scandinavians. The Civil War between 1861 and 1865 forced these newly arrived immigrants to make important decisions in regards to ethnicity, politics and nationality. This article explores the Scandinavian Civil War experience through the prism of ethnicity and …

Full Issue

The Bridge

No abstract provided.

Exploring The Effects Of Age At Arrival And Region Of Origin On The Earnings Of Immigrant Physicians In The U.S., Matthew Goergen '07

Honors Projects

Current projections, as indicated by the 2000 Census, suggest that racial and ethnic minorities will outnumber non-Hispanic whites in America by the year 2050. Clearly, immigrants are vital components of the U.S. labor force and crucial in helping drive the domestic economy. Foreign-born workers occupy all niches of the labor market, from low-skilled workers to physicians, yet there still exists a disparity in wages between immigrant and native workers.

The Best Defense: Why Elected Courts Should Lead Recusal Reform, Deborah Goldberg, James Sample, David E. Pozen

Hofstra Law Faculty Scholarship

In recent years, we have seen an escalation of attacks on the independence of the judiciary. Government officials and citizens who have been upset by the substance of judicial decisions are increasingly seeking to rein in the courts by limiting their jurisdiction over controversial matters, soliciting pre-election commitments from judicial candidates, and drafting ballot initiatives with sanctions for judges who make unpopular rulings. Many of these efforts betray ignorance at best, or defiance at worst, of traditional principles of separation of powers and constitutional protections against tyranny of the majority.

The attacks are fueled in part by the growing influence …

A Default-Logic Paradigm For Legal Fact-Finding, Vern R. Walker

Hofstra Law Faculty Scholarship

This paper presents a visual framework for modelling complex legal reasoning — reasoning that integrates legal rules and policies with expert and non-expert evidence. The framework is based on a many-valued, predicate, default logic. The paper first visualizes the two sides of the rule-evidence interface: rule-based deductions and evidence evaluation. It then explores ways to visualize several dynamics around that interface, including dynamics concerning evidentiary relevance, findings of fact, process decision making about motions, policy-based reasoning about rules and relevant-factor reasoning. The paper then concludes with visualizing dynamics across multiple cases and briefly discusses one pathway by which new legal …

Illinois State Alumni Magazine, Winter 2007-008, Illinois State University, University Marketing And Communications

State: The Magazine of Illinois State University (1999-present)

Illinois State University alumni magazine

Analysis Of E2f1 Target Genes Involved In Cell Cycle And Apoptosis, Scott N. Freeman

USF Tampa Graduate Theses and Dissertations

One of the main results of Rb-E2F pathway disruption is deregulation of the E2F family of transcription factors, which can lead to inappropriate proliferation, oncogenic transformation, or the induction of apoptosis. Given the potential negative biological effects associated with deregulated E2F activity, it is of great importance to study E2F targets that mediate these effects. In Part I of this manuscript, we identify the RhoBTB2 putative tumor suppressor gene as a direct physiological target of the E2F1 transcription factor. We find that RhoBTB2 is highly upregulated during mitosis due in part to E2F1, and that overexpression of RhoBTB2 increases the …

Regulation Of Foxo Stability And Activity By Mdm2 E3 Ligase, Wei Fu

USF Tampa Graduate Theses and Dissertations

Members of the forkhead class O (FOXO) transcription factors are tumor suppressors and key molecules that control aging and lifespan. The stability of mammalian FOXO proteins is controlled by proteasome-mediated degradation but general ubiquitin E3 ligases for FOXO factors remain to be defined. The current studies demonstrate that MDM2 bound to FOXO1 and FOXO3A and promoted their ubiquitination and subsequent degradation, a process apparently dependent on FOXO phopshorylation at PKB sites and on the E3 ligase activity of MDM2. The binding occurred between endogenous proteins and was involved the forkhead box of FOXO1 and the region of MDM2 that controls …

Philosophy Of New Jazz: Reconstructing Adorno, Dustin Bradley Garlitz

USF Tampa Graduate Theses and Dissertations

Theodor W. Adorno, the towering twentieth century German intellectual figure and distinctive musical thinker, was legendary for being over-critical of jazz music. Through a consideration at his admiration for avant-garde chamber and symphonic music, I plan to develop a position that, surprisingly, points towards a theory of unacknowledged acceptance of jazz. The style of jazz that will be the newly constructed musical idiom of admiration for Adorno will be of the heterodox variety. My method of reconstruction will be to interrogate the inconsistencies in Adorno's critical musical writings, and negate such negations with factual evidence of affirmation found in the …

Evaluation Of Scrap Tire-Derived Porous Rubber Tubing As A Green Membrane For Sustainable Water Filtration (Ecol-Mem Process), Ana Maria Garcia

USF Tampa Graduate Theses and Dissertations

Increasing population and extensive urbanization have strained resources around the world, promoting water scarcity and solid waste accumulation. Addressing the issues of access to safe drinking water and basic sanitation in developing countries is challenging due to limited technological and financial resources. Therefore, it is imperative that durable, low-cost, and sustainable technologies are developed to help alleviate these problems. At the same time, the production of solid waste has increased and includes waste tires, which pose a health and environmental hazard. Although efforts have been made to develop new markets for recycled scrap tires, a vast majority are still being …

Do You See What I Mean? Measuring Consensus Of Agreement And Understanding Of A National Weather Service Informational Graphic, Lorna M. Geggis

USF Tampa Graduate Theses and Dissertations

Media use of hurricane graphics to apprise populations vulnerable to severe weather provides a persuasive demonstration of the importance and complexity of visual communication. Surprisingly little research, however, has explored how audiences interpret weather graphics. This study examined whether the general public and the National Weather Service share a common understanding of selected weather related terms and meaning of a NWS informational graphic. Using a coorientation model, general public responses to a questionnaire were compared to definitions prescribed by the NWS. Additionally, the public were asked questions to measure trust of the NWS as a credible and reliable source of …

The Appeal Of The Underdog: Definition Of The Construct And Implications For The Self, Nadav Goldschmied

USF Tampa Graduate Theses and Dissertations

From politics to sports to business, people are quick to categorize those at a considerable competitive disadvantage as "underdogs." Moreover, there is ample support that most unattached observers do not hesitate to align themselves with underdogs, a phenomenon termed "the underdog effect." While most dictionary definitions state that underdogs are "especially expected to lose," the present investigation argues that people often attribute optimistic qualities to underdogs and the exceeding of expectations. A series of studies was conducted to examine the lay-person definition of what an underdog means, as well as what motivations may play a role in the underdog effect. …

Relationship Between Biofilm Removal And Membrane Performance Using Dunedin Reverse Osmosis Water Treatment Plant As A Case Study, Joshua E. Goldman

USF Tampa Graduate Theses and Dissertations

Membrane biofouling is a common occurrence in water treatment plants that utilize reverse osmosis (RO). As bacteria and biofilm material build up on the membrane surface, it becomes more difficult for clean water to permeate through the membrane, and more pressure is required to produce the same amount of water. When pressures become critically high, membranes must be cleaned. This process is expensive in terms of chemical cost, labor, and downtime. Even after membranes have been cleaned, they can re-foul quickly if the cleaning did not effectively remove the biofilm. The water treatment plant in Dunedin, FL, which uses RO …

Nanoripples Formation In Calcite And Indium Phosphide (Inp) Single Crystals, Ramakrishna Gunda

USF Tampa Graduate Theses and Dissertations

In this project we studied the formation of nanoripples in calcite and InP single crystals by continuous scanning using the nanoindenter in the ambient environment and by Argon ion irradiation under ultra high vacuum conditions, respectively. Formation of tip induced nanowear ripples is studied on a freshly cleaved calcite single crystal as a function of scanning frequency and contact load of the diamond tip. At lower loads, initiation of the ripples takes place at the bottom of the surface slope at 3 Hz scanning frequency, which continue to propagate as scanning progresses. The orientation of these ripple structures is perpendicular …

Long-Term Effects Of Prescribed Fire On Reptile And Amphibian Communities In Florida Sandhill, Neal Thomas Halstead

USF Tampa Graduate Theses and Dissertations

I examined the effects of fire frequency on reptile and amphibian community composition in a periodically burned sandhill habitat in west-central Florida. Plots burned in 2003 had lower species richness, diversity, and evenness indices than plots that had not been burned during the previous six years. Community composition was different among plots burned at different times and followed a gradient of change that corresponded to the time since the last fire. Aspidoscelis sexlineata were the most abundant lizards in recently burned plots, while Scincella lateralis and Plestiodon inexpectatus were relatively more abundant in unburned plots. Gopherus polyphemus were least abundant …

The Relationships Between Students’ Perceptions Of School Climate, Attitudes Towards School, And Substance Use Among Early Adolescents, Jason D. Hangauer

USF Tampa Graduate Theses and Dissertations

This study investigated the relationships between early adolescent substance use and perceptions of school climate and attitudes towards school using self-report data from a sample of 443 middle school students. The present study examined school climate and attitudes towards school comprehensively in order to identify important relationships between these classes of variables and multiple types of substance use in early adolescents. The results of the study include that the model of school climate consisting of six factors (fairness, order and discipline, parental involvement, sharing or resources, student interpersonal relations, and student-teacher relations) accurately predicted 11% of the variance in middle …

A Paradox Of Diversity: Billions Invested, But Women Still Leave, Rebekah S. Heppner

USF Tampa Graduate Theses and Dissertations

In 2005, women made up 46.4 percent of the United States labor force but only 1.6 percent of Fortune 500 CEOs (Catalyst 2006). Although gains have been made since the passage of the Civil Rights Act in 1964, there is clearly something stopping women from equal representation at the top. Since the late 1980s, businesses have spent billions of dollars on initiatives designed to assist them in dealing with the anticipated increase in the "diversity" of their workplaces (Lubove 1997; Stodghill II 1996; Johnston and Packer 1987). Is there potential for diversity initiatives to help women conquer the "glass ceiling?" …

Mathematical Techniques For The Estimation Of The Diffusion Coefficient And Elimination Constant Of Agents In Subcutaneous Tissue, Lawrence T. Hersh

USF Tampa Graduate Theses and Dissertations

The purpose of this work was to develop methods to estimate the diffusion coefficient and elimination constant for dexamethasone in subcutaneous tissue. Solutions to the diffusion equation were found for different conditions relevant to implantation and injection. These solutions were then used as models for measured autoradiography data where the unknown model parameters were the diffusion coefficient and the elimination constant. The diffusion coefficient and elimination constant were then estimated by curve fitting the measured data to these models. Having these estimates would be of practical importance since inflammation surrounding implantable glucose sensors may be controlled through local release of …

Numerical Analysis Of Heat Transfer During Jet Impingement On Curved Surfaces, Cesar F. Hernandez-Ontiveros

USF Tampa Graduate Theses and Dissertations

The flow structure and convective heat transfer behavior of a free liquid jet ejecting from a round nozzle impinging vertically on a hemispherical solid plate and a slot nozzle impinging vertically on a cylindrical curved plate have been studied using a numerical analysis approach. The simulation model incorporated the entire fluid region and the solid hemisphere or curved plate. Solution was done for both isothermal and constant heat flux boundary conditions at the inner surface of the hemispherical plate and the constant heat flux boundary condition at the inner surface of the cylindrical shaped plate. Computations for the round nozzle …

(Dis)Continuity Between Sikhism And Islam: The Development Of Hukam Across Religions, Mark Horowitz

USF Tampa Graduate Theses and Dissertations

The purpose of this study is to analyze the development of the Sikh concept of hukam, which is usually translated as a divine command or order. The concept is prominently featured in the Sikh sacred scripture (Guru Granth) and is an important aspect of daily ritual life for the Sikhs. The goal of this study is to provide initial insight into how the concept developed in the Sikh scriptural tradition, as well as the implications that the concept had for the Sikh community. This paper traces the development of hukam from the concepts origin in the Islamic tradition, the writings …

The Pedagogy And Politics Of Online Education In Anthropology, Linda J. Hose

USF Tampa Graduate Theses and Dissertations

This dissertation reports on the key findings of an exploratory study of online education in anthropology. The study was designed to collect information on the extent and types of online offerings at four-year and above degree-granting public institutions in the US. It was also designed to report on the teaching strategies and methods that anthropologists employ online, and to inquire into the conditions and institutional structures that encourage or discourage the development of online education in anthropology. Recent growth in online education has been explosive in many disciplines, but little is known about anthropology's participation in the trend, or lack …

What Are The Socio-Emotional Experiences And Perceptions Of Third Grade Students With High-Stakes Testing?, Anne Marie Juola-Rushton

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to explore the experiences and perceptions of third grade students with high-stakes testing. The study was designed to address this issue from the perspective of the third grade student's experience and offer a venue for them to share their stories. The following research question guides this study: What are the socio-emotional experiences and perceptions of third grade students with high-stakes testing? Data analysis employed here falls under the rubric of qualitative approaches of symbolic interaction and phenomenology written in a narrative format with the provisions of portraiture. This study uses the analytical procedures set …

The Effects Of Organizational Structure On Faculty Job Performance, Job Satisfaction, And Counterproductive Work Behavior, Stacey R. Kessler

USF Tampa Graduate Theses and Dissertations

Organizational researchers focus on group level variables such as organizational climate and organizational structure. The purpose of the current meso-level study is to examine the effects of the structure of an academic department on faculty members' job performance, job satisfaction, and prevalence of counterproductive work behavior (CWB), or harmful behaviors while at work. The sample consisted of 1135 full time faculty members working in 229 academic departments throughout the United States and Canada. Results of the study suggested that faculty members working in a more organically structured department report higher levels of job satisfaction. Additionally, productive faculty members working in …