Digital Commons Network^™

Weight And Body Composition Change During The First Year Of College: A Study Of Traditional Residence Hall Freshmen, Stephanie V. Christensen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Overweight and obesity trends are on the rise, and young people are no exception. The popular phrase "Freshman 15" suggests that freshmen in college tend to gain weight faster than other populations. There is a growing body of literature that supports evidence of increased weight gain during the transition from high school to college. This study sought to examine not only weight changes among freshmen, but body composition, body mass index (BMI), and waist circumference (WC) changes as well. Body composition was measured using air displacement plethysmography (Bod Pod®). This study examined changes in both males (n = 45) …

Utah Middle-Level School Community Councils: An Evaluation Of Compliance, Processes, And Perceived Impact, Richard Jackson Nygaard

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The historical perspective of schools in our democratic society provides a framework of tension between local parent and community control versus professional and state control of public school decisions. Today, federal and state requirements demand increased student achievement. The state of Utah requires each public school to have a school community council (SCC) that is responsible for the development of plans for school improvement. Limited funds are provided to each school community council through the School LAND Trust Program to assist in the implementation of the developed plans for the purpose of increased student achievement. Three Utah middlelevel school community …

Strides Towards Better Application Security, Sathyaraj Balasubramanian

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Static analysis tools analyze source code for vulnerabilities. However, these types of tools suffer from various problems that limit their effectiveness. This thesis examines these static analysis tools and suggests techniques for making them more efficient at detecting different types of vulnerabilities.

The thesis further analyzes possible causes for these vulnerabilities by examining the source code written by programmers of various categories. Finally, this thesis discusses solutions and techniques to improve general security awareness as well as the importance of secure coding among the students and software developers.

Optimal Irrigation Management For Sloping, Blocked-End Borders, Jorge Jose Escurra

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A robust mathematical model of one-dimensional flow for sloping, blocked-end border irrigation was developed using the four-point implicit method to solve the Saint-Venant equations, the volume-balance solution method, and the implementation of new algorithms to avoid numerical instability and solution divergence. The model has the capability of successfully simulating all surface irrigation phases in blocked-end borders for a range of inflow rates (0.01 - 0.05 m³/s per m), longitudinal slopes (up to 1.00%), and border lengths (100 - 500 m).

To achieve numerical stability over the specified parameter ranges, the model was divided into three parts: (1) advance-phase …

A C To Register Transfer Level Algorithm Using Structured Circuit Templates: A Case Study With Simulated Annealing, Jonathan D. Phillips

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A tool flow is presented for deriving simulated annealing accelerator circuits on a field programmable gate array (FPGA) from C source code by exploring architecture solutions that conform to a preset template through scheduling and mapping algorithms. A case study carried out on simulated annealing-based Autonomous Mission Planning and Scheduling (AMPS) software used for autonomous spacecraft systems is explained. The goal of the research is an automated method for the derivation of a hardware design that maximizes performance while minimizing the FPGA footprint. Results obtained are compared with a peer C to register transfer level (RTL) logic tool, a state-of-the-art …

Centering Pregnancy And Traditional Prenatal Care: A Comparison Of Health Practices, Kaylynn Shakespear

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Centering Pregnancy is an alternative method of providing prenatal care with increased education and social support with health assessment in a group setting. This study, a cross-sectional, correlational, convenience-sample design, sought to determine the difference between women who receive prenatal care in Centering Pregnancy prenatal care and those in traditional prenatal care in regards to health behaviors. Adult pregnant women (n = 125) were surveyed from at least 28 weeks gestation. The sample comprised primarily White low-income women. Using multiple linear regression, it was determined that women in Centering Pregnancy had significantly lower index health behavior scores compared with …

Distributed Control For Robotic Swarms Using Centroidal Voronoi Tessellations, Shelley Rounds

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis introduces a design combining an emerging area in robotics with a well established mathematical research topic: swarm intelligence and Voronoi tessellations, respectively. The main objective for this research is to design an economical and robust swarm system to achieve distributed control. This research combines swarm intelligence with Voronoi tessellations to localize a source and create formations. Extensive software coding must be implemented for this design, such as the development of a discrete centroidal Voronoi tessellation (CVT) algorithm.

The ultimate purpose of this research is to advance the existing Mobile Actuator and Sensor Network (MASnet) platform to eventually develop …

Development Of Modular Thermal Control Architecture For Modular Satellites, Quinn Eric Young

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Research has been completed to determine the most effective thermal control architecture for modular satellites. This research investigated principles of modularity, modular spacecraft examples, thermal control methods, and advanced thermal control technologies. A modular spacecraft was designed as a case study to determine key influences and issues. A number of thermal control architectures were developed. Each was evaluated for compatibility with modularity principles, thermal control performance, and a realizable implementation. Thermal control performance was determined by simulating on-orbit conditions for a number of design reference missions, including traditional thermal control architecture used for comparison. An effective thermal control architecture was …

Student Achievement And Affective Traits In Electrical Engineering Laboratories Using Traditional And Computer-Based Instrumentation, Matthew D. Lammi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Distance education has the ability to transcend distance and time, reaching students anywhere at any time, particularly those underrepresented in engineering. Engineering is a practice-oriented profession requiring an interweaving of scientific theory and applied hands-on activities. Despite the need for distance education in engineering, few studies have systematically investigated the impact of student achievement and attitude in distance engineering laboratories. This quasi-experimental research addressed that need by studying the cognitive and affective domains of achievement in engineering laboratories while employing computer-based and traditional oscilloscopes. The students from two courses, electrical engineering for nonmajors and electronic fundamentals, were randomly assigned into …

Livestock Mortality At Beef Farms With Chronic Wolf (Canis Lupus) Depredation In The Western Great Lakes Region (Wglr), Arion Vandergon

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Gray wolf (Canis lupus) depredation on beef calves has been studied extensively in recent years. As wolf populations increase throughout the United States there is a corresponding increase in wolf/livestock interactions. Most research concentrates on summaries of reported depredations and surveys of producers affected by depredations. The objective of this study was to present data on the fate of beef calves on 3 farms in Minnesota and Wisconsin over a 2-year period. Predator presence/absence was studied as an indicator of potential depredations. Also, data are presented comparing 2 techniques that may aid researchers and livestock producers with monitoring …

Decadal-Scale Changes On Coral Reefs In Quintana Roo, Mexico, Thaddeus Allen Nicholls

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In 1988 data on coral reef community composition were collected from two areas, Akumal and Chemuyil, Quintana Roo, Mexico, ranging from 5-35m depth. These areas were revisited in 2005 and data were collected by the same methods and at the same depths as in 1988. Data from 1988 and 2005 were compared to determine if the coral reefs had undergone significant changes, and what specific changes had occurred. Chi-square analysis determined that community composition data collected in 1988 are significantly different from data collected in 2005 at all sites and depths within the categories of corals, gorgonians, sponges, and macroalgae. …

Monitoring Calcium, Phosphorous, And Vitamin D₃ Deficiencies In Starter, Growing, And Finishing Pigs, Chris Hostetler, Bob Thaler

SDSU Extension Extra Archives

Due to the increasing cost of dietary ingredients, many swine producers are looking for the most cost-effective ways to meet the nutritional needs of their animals. One of the most costly ingredients in swine diets is inorganic phosphorus, which is normally supple¬mented as dicalcium phosphate. Calcium, phosphorus, and vitamin D3 each play a major role in bone formation, and a deficiency in these nutrients can lead to depressed growth, rickets, broken bones, and, eventually, paralysis in the hind legs. A lesser-known symptom of calcium/phosphorus/vitamin D3 deficiency is the formation of large nodules, called rachitic rosaries, on the ribs of market …

Preventative Feeding Of The Dairy Cow In Transition, Alvaro Garcia, Arnold Hippen

SDSU Extension Extra Archives

The transition period in the lactating dairy cow is characterized by decreased feed intake that starts late in the close-up period and recovers several days after calving. This drop in intake results in an imbalance between required and absorbed nutrients. Other factors that are related to the volume and physical form of the feed can lead to problems frequently observed at calving time. In general, the veterinary diagnosis is based upon clinical symptoms of certain ailments. For greater chances of success and decreased treatment costs, it’s necessary to detect these ailments during their subclinical stage, or, better yet, to prevent …

Increasing The Recycling Rate In Clark County, Nevada, Emerald Laija

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to identify and evaluate policies that could increase the amount of municipal solid waste recycled in Clark County, Nevada. Clark County has not met the Nevada State goal of a 25% recycling rate since it was established by the Nevada Legislature in 1991. Using the system dynamics problem solving approach, a model for Clark County was adapted from a model developed by Stave (2008) to test policy options. There was no feedback in the model due to the long lifespan of the landfill servicing Clark County and the relatively shorter time horizon of the …

The Environmental And Economic Benefits Of Highway Access Management: A Multivariate Analysis Using System Dynamics, Dan Andersen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Better management of highway operations can be achieved, in part, by controlling vehicular access to adjacent properties and cross streets. This tactic, referred to as access management, has proven safety and operational benefits. However, doubts remain regarding its environmental and economic benefits.

I hypothesize that one environmental indicator, carbon emissions, will decrease with proper access management. Controlling access increases the speed at which vehicles travel, improving fuel efficiency and reducing carbon emissions. My hypothesis relative to financial impacts is that access management will neither help nor harm businesses. Controlling access can reduce travel time which has the effect of increasing …

An Observational Tool For Measuring The Dealer's Emotional Labor In A Casino, Alfred Sukwon Jang

UNLV Theses, Dissertations, Professional Papers, and Capstones

The hotel industry has been interested in friendliness as a means of improving the relationships with customers. Upon how to operationally measure the employee’s friendliness, emerging studies have mentioned emotional labor at work. This study developed an observational tool for measuring the dealer's emotional labor in a casino by observing the smiling, eye contact, collecting in a gentle manner, greeting, thanking, and apologizing.

The Relationship Between High Risk Athletes Risk Perception Of Adventurous Activities, Their Travel Destinations And Their Vacation Travel Patterns, Tanir Magen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Adventure tourism is a growing market segment in the US; the decision to participate in adventurous activities and the selection of risky destinations while on vacation involves ones risk perception about the physical risks that can lead to fatal results from these activities. Existing literature suggest that risk perception is a determinate in choosing a leisure activity and destination while on vacation and that level of tolerance to uncertainty can determine travel behavior (Floyd & Gibson, 2004; Fuchs & Reichel, 2006; Hofstede, 2001; Iso- Ahola, 1980, 1982; Money & Crotts, 2003; Reisinger & Mavondo, 2005). People who have high tolerance …

Camping: A Positive Developmental Context For Youth With Disabilities/Serious Illness, Christopher T. Troxell

UNLV Theses, Dissertations, Professional Papers, and Capstones

The paper will examine how elements of youth development can enhance the camp experience, so that new camps for youth with disabilities and/or serious illness, such as Flying Horse Farms, can start with a solid knowledge base of what works and why it works. Also, even though the paper is geared toward these specific types of camps, part of its recommendation could be modified to fit the purpose of any camp.

Taxonomy Of Knowedge Management Research In Hospitality And Tourism, Henner Nehles

UNLV Theses, Dissertations, Professional Papers, and Capstones

The hospitality industry is operating in an ever increasing knowledge-based economy, where hotels have to increase customer satisfaction and retention levels, lower employees turnover rates and operating expenses, maximize profits and strive to gain a sustainable competitive advantage. “Knowledge management caters to the critical issues of organizational adaptation, survival, and competence in the face of increasingly discontinuous environmental change. Essentially, it embodies organizational processes that seek synergistic combinations of data and information processing capacity of information technologies, and the creative and innovative capacity of human beings” (Civi, 2000, p.166). Knowledge Management (KM) is not a new concept. It has its …

Leucon (Crymoleucon) Rossi, A New Species (Crustacea: Cumacea: Leuconidae) From The Shelf Waters Of The Ross Sea (Antarctica), With A Key To The Genus Leucon South Of 60°S, Peter Rehm, Richard W. Heard

Faculty Publications

A new leuconid cumacean, Leucon (Crymoleucon) rossi n. sp., is described from depths of 84 to 458 m in the Ross Sea off the Victoria Land coast. Leucon rossi n. sp. is distinguished from other members of the genus by a combination of characters including 1) a blunt, horizontally directed pseudorostrum) Without a distinctly protruding siphon; 2) strongly developed antennal notch; 3) entire dorsomedian margin of carapace appearing serrate, armed with 14 to 19 anteriorly Curved spines in female (up to 21 in subadult males); 4) a small, but distinct, spine behind the frontal lobe; and 5) the uropodal peduncle …

Counselors Working In Integrated Primary Behavioral Health And The Influence On Professional Identity: A Phenomenological Study, Geniene Michelle Gersh

Dissertations

Over the past several years there has been a paradigm shift within the primary care delivery system from a traditional medical approach of providing behavioral health services to an integrated primary behavioral health model. This shift in patient care presents new opportunities for professional counselors to assume a role working in the health care arena. Currently there is a lack of research exploring the experiences of counselors working in this model. In addition, there is a deficit in the existing counseling literature specifically examining how working in this setting may potentially influence counselor identity. In an effort to inform counselors …

An Evaluation Of The Efficacy Of The Consultant Workshop Model In A Human Service Setting, Nicole E. Gravina

Dissertations

The purpose of the present dissertation was to document and evaluate the consultant-workshop model commonly employed by OBM consultants. The consultation took place in a non-profit human service setting that delivers behavioral services to children diagnosed with autism and their families. Workshop attendees were 13 senior therapists each of whom oversaw 6 to 8 instructor therapists who provided behavioral services to clients and 3 clinical supervisors who oversaw senior therapists. The training took place in 2005 (i.e., three years prior to this evaluation) across five months and four workshop sessions. Participants learned to pinpoint, measure, diagnose, and intervene and then …

The Sins Of Kalamazoo, A Full-Length Play Based On The Works Of Carl Sandburg, Christine Iaderosa

Dissertations

The Sins of Kalamazoo , is a creative work, a frill-length play adapted from the poem of the same name and other works by Carl Sandburg. This playfollows a nonlinear storyline based on images suggested by Sandburg's poem as well as portions of the city of Kalamazoo's history.

"The Sins of Kalamazoo", poses the question: "I hear America, I hear, what do I hear? America's national narrative is made up of both the shining promise of the future and of the recognition of the decay as its cultural identity becomes fragmented through time. The theatre provides an exceptional cultural space …

Flexography Printing Of Silver Based Conductive Inks On Packaging Substrates, Ramesh Chandra Kattumenu

Dissertations

Printing technologies for the production of flexible electronics have gained much interest due to its potential as a means to reduce the complexity and costs of present technology. High volume printing techniques like flexography are of great importance in order to produce rolls of flexible electronics printed directly on paper substrates. The proposed research will be focused on RFID components being in-line printed using flexography printing as the manufacturing platform. The properties of substrates and inks and printing process parameters are evaluated to study their effect on printed traces and RFID antenna. It was found in the study that properties …

Estadounidenses And Gringos As Reality And Imagination In Mexican Narrative Of The Late Twentieth Century, Jessica Lynam

Dissertations

The representation of North Americans in contemporary Mexican narrative texts is frequent, complex and worthy of study. The present dissertation makes no pretense of being a comprehensive catalogue of “gringos” in Mexican narrative; it can be better seen as a cross-section of Mexican literature concerning people from the United States published during the final two decades of the twentieth century. My intention is to explore how this Mexican narrative has characterized non-Mexican Americans and contextualize these visions in terms of their cultural and historical origins. In this study I analyze six texts authored by both men and women, border authors …

High School Mathematics Teachers' Evolving Understanding Of Comparing Distributions, Sandra R. Madden

Dissertations

Statistics has achieved a position of status in the secondary curriculum (College Board, 2006b; Franklin et al., 2007; NCTM, 2000) and understanding of statistics is essential for high school mathematics teachers if they are to engage students in thoughtful pursuit of statistical ideas. High school teachers typically are ill-prepared in the area of statistics (Ben-Zvi & Garfield, 2004a; CBMS, 2001; Shaughnessy, 1992, 2007). Using methods of design research, this study investigated 56 high school mathematics teachers' understanding of the statistical concept ofcomparing distributions and demonstrated that a modest four-day, statistics-oriented, technology-rich, professional development program may significantly improve teachers' understanding. …

Radiographic And Functional Analysis Of Movement Allowed By Four Wrist Immobilization Devices, Timothy M. Mullen

Dissertations

Immobilization of the wrist is a common practice throughout the healthcare industry. The main forms of wrist immobilization are short-arm casts, prefabricated wrist splints, custom volar wrist splints, and custom circumferential wrist splints. It is generally accepted, by the medical community, that each form of immobilization allows for some movement. The amount each device allows is unknown. Establishing data that accurately describe the amount of mobility in each immobilization device will allow clinicians to make an evidence-based decision each time they are confronted with the need to order an orthosis.

The purpose of this study was to identify the specific …

Construction Of A New Model System In Saccharomyces Cerevisa To Study Yopo And Identify Its Targets, Laura Nejedlik

Dissertations

Yersinia species use a type three secretion system (TTSS) to inject Yersinia outer proteins (Yops) into the target cell. The effector YopO is a serine/threonine kinase which upon association with actin becomes active. However, activation of the kinase is not required for actin disruption. YopO also contains a Rho/Rac binding domain, but it is unclear how it affects these proteins.

We have established an expression system in Saccharomyces cerevisiae to study YopO. The expression vector contains a GAL1 promoter for inducible expression of YopO as well as a V5 epitope used for visualization of each Yop. We have shown that …

Research Self-Efficacy And Research Mentoring Experiences As Predictors Of Occupational Commitment In Counselor Education Doctoral Students, Glinda Jeanette Rawls

Dissertations

The demands of research and pressure to publish have been identified as reasons doctoral graduates in counselor education infrequently choose faculty careers (Maples, Altekruse, & Testa, 1993; Swickert, 1997). Despite this finding, the counselor education literature provides very little information on doctoral students' research self-efficacy or perceived ability to complete research-related tasks (Bieschke, Bishop, & Herbert, 1995). In addition, research mentoring can enhance research self-efficacy (Hollingsworth & Fassinger, 2002), yet it too remains understudied. Research mentoring involves someone more experienced promoting research skill, awareness, and productivity to someone less experienced (Dohm & Cummings, 2002). Few studies have explored research self-efficacy, …

Three Essays On Computer And Internet Use At Home, Tadesse Biru Wodajo

Dissertations

This dissertation consists of three essays on computer and Internet (CI) use in the United States households. Surveys show that the adoption and use of these two technologies at home have been steadily increasing over time. In addition to providing information regarding the use of CI at home, the essays seek to address a number of issues.

The first essay investigates the factors that determine the probability of owning a home CI and those influencing the intensity of use by employing the double-hurdle model. The double-hurdle estimation reveals that the use of a home CI is governed by two distinct …