Digital Commons Network^™

Evaluation Of Mentoring In Southern Nevada, Andrew Merz, Glen Leavitt

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Southern Nevada Regional Planning Coalition (SNRPC) is charged with the issuance of grants and funding to groups who provide and run mentoring programs in Southern Nevada (which is primarily composed of Clark County.) The SNRPC desires to streamline and regiment this process, as currently it is operated with minimal oversight and regulation. We designed a survey to ascertain what mentoring groups in Clark County consider to be central to mentoring; both within and without their own programs. It is our desire that the SNRPC be able to administer the newly created survey to groups who receive and groups who …

Synthesis Of A Chemical Probe For Identification Of Ger Receptor Proteins Of Bacillus Anthracis, Hyelee Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

Bacillus anthracis,a gram positive, endospore-forming, rod-shaped, aerobic bacterium, is the causative agent of anthrax. A key step in the pathogenic cycle is the spore germination, where the dormant spore transforms into a metabolically active cell. This allows B. anthracis to proliferate and secrete toxins. It is believed that spore germination is triggered when small molecules, known as germinants, are recognized by germination (Ger) receptor proteins located in the inner membrane of spores. Most Ger proteins are encoded by tricistronic operons, resulting in three distinct products, the A-, B-, C-subunits. Genomic sequencing showed that B. anthracis has seven ger receptor …

To Receive My Services You Must Be Dying And Alone, Kathryn Kruse

UNLV Theses, Dissertations, Professional Papers, and Capstones

Following is a collection of short fiction. The work comes out of the tradition of realism with influences from surrealism and the gothic grotesque.

While most of the work of creation centered around character and voice, several themes emerge in the final product. Death and its perception in American society play central roles in many pieces. Also, the collection explores the experience of intimacy in many types of interpersonal relationships. Several of the pieces focus on the effects environment and location have on individuals and how change of location impacts a character. In conjunction with these many themes, obsession as …

Climate And Vegetation Change In The Newberry Mountains, Southern Clark County, Nevada, Ross Joseph Guida

UNLV Theses, Dissertations, Professional Papers, and Capstones

Ecological studies have shown worldwide that vegetation is being affected by climate change. Species are shifting to new elevations and physiographic positions to adapt to changes in their environment. More specifically, paleoecology studies in the Mojave Desert have shown shifting vegetation patterns in response to past warming and precipitation changes. Recent studies have shown mortality among desert plants related to extended drought and warming. However, few studies have shown how the geographic distribution of Mojave Desert species has changed during this most recent period of warming. This study addresses this gap in the literature by focusing on several plant species …

Enhancing The Cultural Competence Of Women’S Health Nurses Via Online Continuing Education, Ella T. Heitzler

UNLV Theses, Dissertations, Professional Papers, and Capstones

By 2050, current minority groups will comprise almost half of the US population further challenging healthcare providers and nurses to deliver culturally competent care. Numerous organizations have published documents supporting cultural competence and its incorporation into nursing curricula has been encouraged since 1986. However, practicing nurses, specifically those providing care to childbearing women and families, continue to acknowledge their lack of cultural competence. This is concerning as large health disparities exist between culturally diverse women and cultural competence can lead to greater health equality and better client care. Studies have shown face-to-face education increases the cultural competence of healthcare providers; …

Immersion Cooling Of Photovoltaic Cells In Highly Concentrated Solar Beams, Ahmed Darwish

UNLV Theses, Dissertations, Professional Papers, and Capstones

Concentrated solar radiation can be utilized to generate electrical power from photovoltaic cells, but concentrated solar radiation increases the photovoltaic cell’s temperature. This increase in temperature can lead to degradation of the cell efficiency, and too high of a temperature can damage the cell’s integrity. This is particularly important in dish and tower systems where a maximum uniform flux may be difficult to achieve. While a variety of approaches have been used to the keep the cells cool, most are based upon removal of heat from the back (opposite surface of the incident flux exposed surface) of the cell. This …

Faculty’S Perceptions Of Students’ Abilities To Utilize Self-Regulated Learning Strategies To Improve Critical And Reflective Thinking In Making Clinical Decisions: A Methodological Study, Amber Lynn Donnelli

UNLV Theses, Dissertations, Professional Papers, and Capstones

With the rapidly changing health care system, new nurses are expected to be able to collect pertinent data, access resources, prioritize information, solve problems, and ultimately make sound clinical decisions (Kuiper, 2005). Supporting evidence has shown that using self-regulated learning strategies (SRLS) increases the development of critical and reflective thinking within the clinical reasoning context (Kuiper & Pesut, 2004). Despite the fact that instruments have been developed to examine students’ perception of the use of SRLS, there is no existing instrument to measure nursing faculty’s perceptions of a student’s ability to utilize self-regulated learning strategies in the clinical setting. This …

Statistical Analysis Of Fatalities Due To Vehicle Accidents In Las Vegas, Nv, Annabelle Marie Mathis

UNLV Theses, Dissertations, Professional Papers, and Capstones

The goal of this thesis is to investigate factors that affect the odds of having a fatality in a vehicle collision. We will be looking at characteristics of the driver that caused the accident (age, gender, behavior, actions, influences, and seat belt worn), the characteristics of the vehicle the driver drove (type of vehicle, and air bag deployment), the characteristics of the environment in which the accident occurred (weather, road condition, lighting, time of day, the day of the week, and month of the year), the characteristics of the crash (direction of accident and how many vehicles were involved), and …

Embryonic Development Of The Grass Shrimp, Palaemonetes Pugio, And The Influence Of Salinity On Cardiac Physiology, Amie Lynn Romney

UNLV Theses, Dissertations, Professional Papers, and Capstones

The grass shrimp, Palaemonetes pugio, inhabit the brackish waters along the Atlantic coast of North America and are a key component of the estuarine ecosystem. These decapod shrimp can tolerate large fluctuations in environmental parameters including daily and seasonal fluctuations in salinity between 0 to 55 parts per thousand (seawater at 30-32 ppt). Any observed distribution patterns of adult P. pugio in relation to salinity may be accounted for by their relative ability to tolerate a range in salinity and their ability to maintain internal water volumes and cardiac performance in the earliest life stage, the embryonic period. This thesis …

Raman Spectroscopic Study Of Solid Solution Spinel Oxides, Brian D. Hosterman

UNLV Theses, Dissertations, Professional Papers, and Capstones

Solid solution spinel oxides of composition MgxNi1−xCr2O4, NiFexCr2−xO4, and FexCr3−xO4 were synthesized and characterized using x-ray diffraction and Raman spectroscopy. Frequencies of the Raman-active modes are tracked as the metal cations within the spinel lattice are exchanged. This gives information about the dependence of the lattice vibrations on the tetrahedral and octahedral cations. The highest-frequency Raman-active mode, A1g, is unaffected by substitution of the divalent tetrahedral cation, whereas the lower frequency vibrations are more strongly affected by substitution of the tetrahedral cation. The change in wavenumber of many phonons is nonlinear upon cation exchange. All detected modes of MgxNi1−xCr2O4 and …

Investigating The Effects Of Addition With Regrouping Strategy Instruction Among Elementary Students With Learning Disabilities, Christi Miller Carmack

UNLV Theses, Dissertations, Professional Papers, and Capstones

Many students, specifically those with learning disabilities, struggle to master foundational computation skills such as addition with regrouping. With this in mind, the purpose of this research was to examine the effects of strategy instruction that involved the use of the concrete-representational-abstract teaching sequence on the addition with regrouping computation and word problem-solving skills of students with learning disabilities. This study involved the use of a multiple probe across participants design with two replications. The participants included nine second through sixth graders who had been identified as having a learning disability and were demonstrating mathematics difficulties. There were three females …

The Relationship Of Ethnicity And Familial Factors In The Expression Of School Refusal Behavior In Clinical And Community Samples, Courtney Marie Haight

UNLV Theses, Dissertations, Professional Papers, and Capstones

Failure to attend school can have a devastating impact on a child’s social, emotional, academic, and later career development. Psychologists, educators, and researchers from other disciplines have produced large bodies of literature regarding problematic absenteeism. This has led to varying terminology, divergent approaches, assessment, and treatment of nonattendance. Additional research on contextual, proximal, and distal variables, such as culture and family, has been encouraged. The present study involved contextual variables related to school refusal behavior and contained a more representative sample of youth with attendance difficulties than previous studies. Contextual variables included youth and parent ethnic identity, family environment, school …

College Choice Influences Among High-Achieving Students: An Exploratory Case Study Of College Freshmen, Derek Takumi Furukawa

UNLV Theses, Dissertations, Professional Papers, and Capstones

College choice is an important process on the way to college matriculation. Understanding the motivators and influences of college choice can help an institution establish more effective methods of influencing the choice decision. This influence is even more significant among populations that are low in supply and high in demand, such as high-achieving students. The purpose of this qualitative case study was to explore high-achieving student perceptions of the areas that may influence their college choice. In-depth focus groups and interviews were conducted with high-achieving students at a single institution in the Southwestern United States to establish perceptions of influences …

Credit Fluctuations And Lodging Firms: An Investigation Of The Differing Capital Structures In The Us Lodging Industry, Dipendra Singh

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study empirically investigates the effect of credit availability and firm size on the leverage of lodging industry in United States using a 3 X 2 factorial Multivariate Analysis of Variance (MANOVA). Three time points of differing credit availability (Low, High, and Average) were identified using Case-Shiller home price index. Leverage, Net Leverage, and Short-to-Long-Term debt ratios of large and small US lodging firms were analyzed at these differing credit availability time points to assess any significant differences. Specifically, this study attempts to find whether there is an interaction effect of credit availability and firm size on the leverage of …

Comparison Of Design-Build And Design-Bid-Build Performance Of Public University Projects, James David Fernane

UNLV Theses, Dissertations, Professional Papers, and Capstones

With an unsure market and scarce work, owners across the United States, especially universities, are finding themselves in situations where they are unable to complete their projects within cost and schedule using the traditional delivery method: Design-Bid-Build (DBB). Under the DBB project delivery method, many competent contractors are electing to send low bids on projects just to keep work on their books, with plans to receive change orders once the project is underway; this practice is leading to cost and schedule overruns. Public universities across the United States are beginning to elect to use Design-Build (DB) as an alternate project …

Deterrents To Participation And Retention In English As A Second Language (Esl) Programs Among Adult Hispanic Immigrants, Jose Irias

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study explored Hispanic immigrants' perceived deterrents to participation in, and successful completion of, ESL programs in Las Vegas, Nevada. The study used a qualitative research design, as students, teachers, and administrators from two ESL program sites were interviewed in focus groups and individual interviews. Findings suggest that Hispanic immigrants face deterrents due to both their personal situations (personal deterrents) and to ESL program characteristics (institutional deterrents). Furthermore, some institutional deterrents may be easily reduced, which may in turn increase Hispanic ESL program participation.

Groundwater Contamination Potential In Northern Nevada From Mining, Associated Communities, And Agriculture As Forecasted By Two Vulnerability Methods, John L. Swatzell

UNLV Theses, Dissertations, Professional Papers, and Capstones

Two methodologies, DRASTIC and the NDEP method, were used to compare the groundwater vulnerability of mining, associated towns, and agricultural areas in northern Nevada. The DRASTIC and NDEP methods were compared to determine which method produces a more accurate depiction of vulnerability. Vulnerability maps were created using the United States Environmental Protection Agency's (USEPA) DRASTIC and Nevada Department of Environmental Protection (NDEP) methodologies. The DRASTIC map uses seven aspect layers of geologic and hydrologic information with assigned values and weights that are applied to a mathematical equation. The NDEP method uses field data collection for potential contaminant sources and well …

Graduating Bsn Students' Ebp Knowledge, Ebp Readiness And Ebp Implementation, Ludy Sm. Llasus

UNLV Theses, Dissertations, Professional Papers, and Capstones

Emphasis on evidence-based practice (EBP) in healthcare delivery increased the expectation that nurses utilize research findings to make informed clinical decisions, and guide their nursing actions and interactions with clients in a constantly changing and increasingly complex healthcare environment. Increasing demand for patient safety and quality healthcare requires that translation of best possible evidence into practice is needed to ensure improved patient outcomes. Nursing education is responsible for preparing and providing society with knowledgeable and competent nurses who are ready to engage in EBP for improved patient outcomes.

The purpose of this non-experimental, descriptive, correlational, cross-sectional study was to describe …

Recycling Waste Latex Paint In Overlays, Rigid Pavements, And Pervious Concrete, Oscar Inez Quiroz

UNLV Theses, Dissertations, Professional Papers, and Capstones

With over 16 million gallons of latex paint (WLP) being disposed every year it is the largest by volume, liquid hazardous waste in the United States. WLP is difficult to recycle and hazardous to the environment due to the volatile organic compounds it contains. Several methods exist for disposing WLP including paint swaps, combustion, drying and discarding in a landfill, and by placing pigments in cement. Many communities are moving to dispose WLP by drying and placing in a landfill due to the reduced cost. However, this is the least preferred technique for the environment because it creates a need …

Examining The Experience Of Recent War Veterans Who Report Posttraumatic Stress Disorder, Neda C. Raymond

UNLV Theses, Dissertations, Professional Papers, and Capstones

Posttraumatic stress disorder (PTSD), an anxiety disorder that develops following exposure to a traumatic event, has long been associated with military combat. Despite the well-documented negative effects of PTSD, careful, in-depth accounts of the experience of those suffering from PTSD are rare. The present study employed Descriptive Experience Sampling (DES) to explore the inner experience of seven Operation Iraqi Freedom (OIF) or Operation Enduring Freedom (OEF) veterans with combat-related PTSD. Potential participants completed the PTSD Checklist - Military Version to determine the presence and severity of PTSD symptomatology. Participants who reported significant symptoms of combat-related PTSD participated in DES. A …

Gambling With Lives: A History Of Occupational Health In Southern Nevada, 1905--2010, Michelle Ann Turk

UNLV Theses, Dissertations, Professional Papers, and Capstones

In April 2009, the Pulitzer committee awarded its public service prize to the Las Vegas Sun for its coverage of the high fatalities on Las Vegas Strip construction sites. The newspaper attributed failures in safety policy to "the exponential growth in the Las Vegas market." In fact, since Las Vegas' founding in 1905, rapid development in the region has always strained occupational health standards. From transporting hazardous railroad cargoes to building Hoover Dam, chemical processing at Basic Magnesium, nuclear testing, and dense megaresort construction on the Strip, workers, residents, and tourists alike have been exposed to the threat of living …

Seismic Characterization Of Select Engineered Nanoparticles In Essentially Saturated Glass Beads, Mohamed Nihad Rajabdeen

UNLV Theses, Dissertations, Professional Papers, and Capstones

A laboratory testing apparatus was developed for the study of seismic body wave propagation through nanoparticles dispersed in pore fluid that is essentially saturating glass beads. First, the responses of water-saturated glass bead specimens were studied to establish baseline signatures. Then the seismic responses in the presence of engineered nanoparticles of various concentrations dispersed in the pore fluid of the specimen chamber were studied to observe variances from baseline.

The testing apparatus incorporates piezoceramic bender elements to actuate and receive seismic body waves through a cylindrical column filled with glass beads and back-saturated at ambient pressure with liquid. The system …

A Comparison Of Spatio-Temporal Prediction Methods Of Cancer Incidence In The U.S, Michelle Hamlyn

UNLV Theses, Dissertations, Professional Papers, and Capstones

Cancer is the cause of one out of four deaths in the United States, and in 2009, researchers expected over 1.5 million new patients to be diagnosed with some form of cancer. People diagnosed with cancer, whether a common or rare type, need to undergo treatments, the amount and kind of which will depend on the severity of the cancer. So how do healthcare providers know how much funding is needed for treatment? What would better enable a pharmaceutical company to determine how much to allocate for research and development of drugs, the amount of each drug to manufacture, or …

Enhancing Therapists' Clinical Judgments Of Client Progress Subsequent To Objective Feedback, Michael M. Haderlie

UNLV Theses, Dissertations, Professional Papers, and Capstones

Although it is intuitive that the judgments made by mental-health clinicians become increasingly accurate as they gain clinical experience, research has demonstrated only minimal effects of experience on clinical judgment. Feedback regarding the accuracy of judgments is widely considered to be an essential component in developing clinical judgment. However, very little research has systematically examined whether the provision of feedback following judgments leads to increased judgment accuracy. The current research explored the effects of providing feedback to therapists regarding client progress on the accuracy of therapists' judgments of change. The effect of feedback on therapists' confidence ratings regarding such judgments …

Historical Diversification Of Montane Herpetofauna Within And Between The Sierras Of Mexico, Robert William Bryson Jr.

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Mexican highlands consist of four major mountain ranges spanning most of mainland Mexico. The evolutionary history of the Mexican highlands has been shaped by various geological and climatic events over the past several million years. The relative impacts of these historical events on diversification in montane taxa, however, remains uncertain. I used mitochondrial DNA data from three widely distributed species complexes of lizards as a model system to exemplify the potential roles of Neogene mountain formation and Quaternary climate change on timing and tempo of diversification across the Mexican highlands. My results suggested strong geographic partitioning of genetic variation …

The Role Of Narrative In Multimedia Learning, Myrna Elyse Diamond

UNLV Theses, Dissertations, Professional Papers, and Capstones

This descriptive case study investigated the role of narrative in multimedia learning and teaching and observed how teachers applied their understanding of narrative, and new constructivist technologies, to design multimedia presentations for instruction. The study looked specifically at the cognitive strategies, visual narrative concepts, and techniques of representation three teachers used in the course of learning how to design a multimedia instructional presentation. The context of the study was a university graduate instructional design of educational software course. Data sources included visual and verbal elicitation techniques, participant observations, document collection, semistructured interviews, and videotapes in the graduate classroom. Data were …

Best Instructional Practices For Distance Education: A Meta-Analysis, Robin Michael Roberts

UNLV Theses, Dissertations, Professional Papers, and Capstones

Recent meta-analyses on the efficacy of distance education have concluded that no significant difference exists between face-to-face and distance education. At the same time, these meta-analyses noted that considerable heterogeneity existed between the individual studies used in the meta-analyses. Investigation of moderators responsible for that heterogeneity suggested that four things other than media delivery were primarily responsible for the majority of variation between study outcomes: methodological quality, instructor involvement, type of interaction, instructional methods and time-on-task. A comparative meta-analysis was performed to further investigate these moderators. Methodological quality, maturational differences in students and any undetermined media effects were controlled for …

Roaming Region For Delaunay Triangulation, Romas James Hada

UNLV Theses, Dissertations, Professional Papers, and Capstones

Delaunay graphs have been used in CAD/CAM, sensor network and geographic information systems. We investigate the reliability properties of nodes in Delaunay graphs. For measuring the reliability we formulate the concept of roaming-region for nodes. A node v with large roaming-region r(v) such that v is positioned near the center of r(v) is identified as a reliable node. We develop algorithms for constructing roaming-regions and present an implementation of the proposed algorithm in the Java programming language.

Indigent Women And Access To Prenatal Care, Zoe Ann Zelazny

UNLV Theses, Dissertations, Professional Papers, and Capstones

One aspect of America's health care system that illustrates the great need for health care reform, but receives little attention, is prenatal care. The United States has the second worst newborn mortality rate in the developed world. Adequate prenatal care results in healthier babies, more full-term babies delivered, and a decrease in other serious problems related to pregnancy and health care costs. The purpose of this study is to examine the history of prenatal policy and how it has developed into what it is today, to understand why medically indigent women are not receiving adequate prenatal care, and to highlight …

Accurate Circuit Model For Predicting The Performance Of Lead-Acid Agm Batteries, Wenxin Peng

UNLV Theses, Dissertations, Professional Papers, and Capstones

Energy storage technologies are becoming of great importance in many modern electrical systems. In particular, electrochemical batteries are rapidly gaining wide-spread application in transportation systems as well as in the electric utility sector, where they provide a means to convert non-dispatchable renewable resources into dispatchable generation sources. Hence, accurate battery models are needed during the design stage of such systems to forecast future performance.

A variety of models with a varying degree of complexity and accuracy currently exist that predict battery behavior. In the proposed paper, an existing battery model is modified to account for some battery irregularities while maintaining …