Digital Commons Network^™

Sustained Isometric Shoulder Contraction On Muscular Strength And Endurance: A Randomized Clinical Trial, Natalie L. Myers, Jenny L. Toonstra, Jacob S. Smith, Cooper A. Padgett, Tim L. Uhl

Physical Therapy Faculty Publications

BACKGROUND: The Advanced Throwers Ten Exercise Program incorporates sustained isometric contractions in conjunction with dynamic shoulder movements. It has been suggested that incorporating isometric holds may facilitate greater increases in muscular strength and endurance. However, no objective evidence currently exists to support this claim.

HYPOTHESIS/PURPOSE: The purpose of this research was to compare the effects of a sustained muscle contraction resistive training program (Advanced Throwers Ten Program) to a more traditional exercise training protocol to determine if increases in shoulder muscular strength and endurance occur in an otherwise healthy population. It was hypothesized that utilizing a sustained isometric …

Reliability Of 3-Dimensional Measures Of Single-Leg Cross Drop Landing Across 3 Different Institutions: Implications For Multicenter Biomechanical And Epidemiological Research On Acl Injury Prevention, Christopher A. Dicesare, Nathaniel A. Bates, Kim D. Barber Foss, Staci M. Thomas, Samuel C. Wordeman, Dai Sugimoto, Benjamin D. Roewer, Jennifer M. Medina Mckeon, Stephanie Di Stasi, Brian W. Noehren, Kevin R. Ford, Adam W. Kiefer, Timothy E. Hewett, Gregory D. Myer

Physical Therapy Faculty Publications

Background: Anterior cruciate ligament (ACL) injuries are physically and financially devastating but affect a relatively small percentage of the population. Prospective identification of risk factors for ACL injury necessitates a large sample size; therefore, study of this injury would benefit from a multicenter approach.

Purpose: To determine the reliability of kinematic and kinetic measures of a single-leg cross drop task across 3 institutions.

Study Design: Controlled laboratory study.

Methods: Twenty-five female high school volleyball players participated in this study. Three-dimensional motion data of each participant performing the single-leg cross drop were collected at 3 institutions over a period of 4 …

Aircraft Detection And Tracking Using Uav-Mounted Vision System, Yan Zhang

Doctoral Dissertations and Master's Theses

For unmanned aerial vehicles (UAVs) to operate safely in the national airspace where non-collaborating flying objects, such as general aviation (GA) aircraft without automatic dependent surveillance-broadcast (ADS-B), exist, the UAVs' capability of “seeing" these objects is especially important. This “seeing", or sensing, can be implemented via various means, such as Radar or Lidar. Here we consider using cameras mounted on UAVs only, which has the advantage of light weight and low power. For the visual system to work well, it is required that the camera-based sensing capability should be at the level equal to or exceeding that of human pilots. …

Factors Influencing Critical Care Nurses To Speak Up When Patients Are At Risk For Harm: Development Of An Instrument, Deborah Ruth Crumpler

Nursing Theses and Dissertations

Nurses intervene in situations where patients may be at risk for harm, particularly in critical care units where risk due to severity of illness and complexity of treatment is higher. Although safety improvements have been made, nurses still report barriers to speaking-up. Improvement in skilled communication and true collaboration among health care professionals begins with assessment of the problem. Attitudes and beliefs that influence speaking-up behaviors among critical care nurses have not been well-documented. This research study utilized a mixed-method design framed by the Theory of Planned Behavior to explore factors associated with intention to speak up among critical care …

Repeat Maltreatment In Alaska: Assessment And Exploration Of Alternative Measures, Jessica Passini, Diwakar Vadapalli

ISER Reports

No abstract provided.

High Pressure X-~Ray Absorption Spectroscopy Studies Of Heavy-~Fermion Cerium And Uranium Compounds, Daniel Antonio

UNLV Theses, Dissertations, Professional Papers, and Capstones

Investigations into f- electron heavy-fermion materials have revealed a wide range of novel behavior. Hydrostatic pressure is a valuable "clean" non-thermal parameter that can be used to systematically study them by tuning their ground state properties. The rare earth compound CeCu2Ge2 shows an unusual two-domed region of unconventional superconductivity under pressure, similar to its isostructural counterpart CeCu2Si2. While the lower pressure dome at about 10 GPa is caused by a magnetic quantum critical point (QCP), the higher one at about 16 GPa is less well understood. Previous structural measurements have indicated that it may be caused by critical valence fluctuations, …

Models For Beethoven's An Die Ferne Geliebte, Op. 98: A Stylistic Analysis, William George August Mccullough

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document argues that the defining stylistic features of Beethoven’s An die ferne Geliebte, Op. 98 can be directly traced through an evolution of style in the following works: Christian Gottlob Neefe’s “Das Todtenopfer” from Bilder und Träume (1798); Beethoven’s “Busslied” from Sechs Lieder von Gellert (1803); and Beethoven’s An die Hoffnung, Op. 94 (1815). This document focuses primarily on the stylistic features of fermati, modulations, changes in tempo and texture, and text setting. These features are examined through comparative musical analysis within the historical context of single affect poetry and Lieder composition of the late eighteenth and early nineteenth …

Object Detection And Tracking In Wide Area Surveillance Using Thermal Imagery, Santosh Bhusal

UNLV Theses, Dissertations, Professional Papers, and Capstones

The main objective behind this thesis is to examine how existing vision-based detection and tracking algorithms perform in thermal imagery-based video surveillance. While color-based surveillance has been extensively studied, these techniques can not be used during low illumination, at night, or with lighting changes and shadows which limits their applicability. The main contributions in this thesis are (1) the creation of a new color-thermal dataset, (2) a detailed performance comparison of different color-based detection and tracking algorithms on thermal data and (3) the proposal of an adaptive neural network for false detection rejection.

Since there are not many publicly available …

The Painted Motifs Of Cypriot Ceramic Art: A Study Of Iconography & Identity, Paige Bockman

UNLV Theses, Dissertations, Professional Papers, and Capstones

The aim of this master’s thesis is to explore the iconography of Chalcolithic (c. 3900-2300 cal. BC) Cyprus using ceramic motifs and identify their potential use in revealing differences between the cultural identity present at archaeological sites, as well as the possible causes of such variation. By exploring the existence and origins of subtle differences between the iconographic repertoires of related sites, the study seeks a better understanding of the movement of both ideas and symbols, and how the meaning of symbols developed within the context of a site.

Currently, Cypriot Chalcolithic sites are believed to be largely homogeneous in …

Inner Experience While Reading Fiction: A Descriptive Experience Sampling Exploration, Vincent Peter Brouwers

UNLV Theses, Dissertations, Professional Papers, and Capstones

Reading is ubiquitous. In Western culture, childhood education places a strong emphasis on acquiring the ability to read. Whereas many studies have examined the cognitive processes underlying reading ability, no previous studies have used a high-fidelity method of sampling inner experience to examine the direct, momentary inner experience while reading. The current study used the Descriptive Experience Sampling Method (DES) to explore the inner experience of 17 undergraduates, who had been trained in DES, while reading classical short stories. We found that participants while reading often innerly saw a visual depiction of the story, though the congruency of these depictions …

The Influence Of Iron On Arctic Thule Migration Patterns, Alina T. Aquino

UNLV Theses, Dissertations, Professional Papers, and Capstones

Arctic scholars have yet to fully understand the reasons behind the migration of Thule culture from the western to the eastern Arctic. This rapid movement across such a vast area into environmentally diverse regions marks a critical period of cultural change that is usually summarized by two theoretical positions. Ecological theories postulated environmental changes placed selective pressures on traditional food sources that required Thule hunters to follow migrating prey. Theories that focused on material acquisition alternately proposed the Thule followed the trail of meteoric iron eastward into northwestern Greenland.

This research sought to examine the eastward Thule migration from another …

What Is The Best Residential Roof Assembly For The U.S. Desert Southwest, With Respect To Cost, Energy Efficiency And Embodied Energy Concerns, John Joseph Carroll

UNLV Theses, Dissertations, Professional Papers, and Capstones

The climate is continually changing for the worse as there are poor decisions being made in the rapidly constructed built environment. In an effort to reduce the impact on the built environment, the typical residential roof assemblies that are currently being used in the U.S. desert southwest are not the best for the environment. Through research and simulations, this

paper compares several residential roof assemblies to the standard code compliant construction and provides cost breakdowns of simple payback and cost of save energy for each of the simulated systems. A case study was also designed for the U.S. Department of …

Assessing The Importance Of Nurse Plant Associations To The Growth Of Pre-~Reproductive Yucca Brevifolia, Eric James Chameroy

UNLV Theses, Dissertations, Professional Papers, and Capstones

Facilitation and competition among plant species, in addition to abiotic factors, play an important role in determining plant community structure in arid and semi-arid environments. I conducted a study in Dry Lake Valley, Lincoln County, Nevada, USA to investigate the importance of nurse plant associations to pre-reproductive Yucca brevifolia (Joshua tree). Dry Lake Valley lies within a transition desert between the Mojave and Great Basin Deserts with ecotonal plant communities consisting of species representative of both deserts. A vegetation survey described the communities in which this study was conducted as a Y. brevifolia woodland dominated by an understory of Ephedra …

Electronic Dance Music: From Deviant Subculture To Culture Industry, Christopher T. Conner

UNLV Theses, Dissertations, Professional Papers, and Capstones

Utilizing a mixed qualitative research methods design, including interviews, ethnographic field work, and analyzing historical documents, I examine the Electronic Dance Music (EDM) subculture, since its inception in the late 80s as a deviant subculture. Previous studies of raves and other music subcultures focus almost exclusively on the role of popularity in transforming the subculture. In this research, I found, in the case of EDM at least, a more complicated process in which structural factors such as mass media, public officials (politicians and law enforcement), and major music corporations played a prominent role in the transformation. Media coverage focused on …

Literacy And Social Justice: Understanding Student Perceptions And Conceptions About Literature, Jennifer Marie Crosthwaite

UNLV Theses, Dissertations, Professional Papers, and Capstones

Literacy and learning is a social process, one that is both transformative, empowering, and can often lead to social change. The following study is based on the idea that literacy can be used as a tool not only to teach the basic skills of reading, but the skills for individuals to learn to be compassionate towards others, understand their individuality, and envision how their self can alter their community for a more just world. The frameworks that support these concepts are socio-cultural theory, reader response theory, and critical literacy theory. The intersection of these three theories highlight the importance of …

Examining Resilience In Relation To Ptsd Symptomatology In Maltreated Youth, Timothy Day

UNLV Theses, Dissertations, Professional Papers, and Capstones

Resilience following exposure to adverse life situations is an ongoing process that reduces the impact of traumatic experiences and opens potential for posttraumatic growth (Fincham, Altes, Stein, & Seedat, 2009; Luthar, Cicchetti, & Becker, 2000). The relationship between resilience and risk for PTSD in maltreated youth, however, remains unclear. This study sought to explore this relationship by examining a sense of mastery, a sense of relation to others, and emotional reactivity in youth endorsing a history of maltreatment related trauma. Participants were recruited from a Las Vegas Department of Family Services affiliated clinic and were administered the Children’s PTSD Inventory …

Perceptions Toward The Value Of Higher Education For Hotel Professionals In Las Vegas: A Case Study, Gary Lee Deel

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study concerns a qualitative investigation of the views toward higher education and its importance to hospitality career success among hotel professionals in the Las Vegas, Nevada area. Existing literature supported the premise that education may be important to professional career success in several different ways, and that values concerning education may be passed from one person to another via social learning. However, the relevant theories had not previously been evaluated within the context of the hospitality industry. Professionals in reporting relationships at two Las Vegas hotels were interviewed to determine perceptions about higher education, the sources of those perceptions, …

Chemical And Electronic Structure Of Surfaces And Interfaces In Cadmium Telluride Based Photovoltaic Devices, Douglas Arthur Duncan

UNLV Theses, Dissertations, Professional Papers, and Capstones

The surface and interface properties are of the upmost importance in the understanding, optimization, and application for photovoltaic devices. Often the chemical, electronic, and morphological properties of the films are empirically optimized, however when progress slows, a fundamental understanding of these properties can lead to breakthroughs. In this work, surfaces and interfaces of solar cell-relevant films are probed with a repertoire of X-ray analytical and microanalysis techniques including X-ray photoelectron (XPS), X-ray excited Auger electron (XAES), X-ray emission (XES) spectroscopies, and atomic force (AFM) and scanning electron (SEM) microscopies.

Silicon-based devices currently dominate the solar market, which is rather inflexible …

The Impact Of Environmental Factors On Policy Decisions As It Relates To Community Development Block Grant Allocations, Al G. Gourrier

UNLV Theses, Dissertations, Professional Papers, and Capstones

For decades urban centers across the country have experienced significant transition in demographics, population, composition of workforce, and the industries that constitute their economic base. The Federal Government has sought to address the issues of urban cites through a series of urban polices. This study explores one of the more prominent and sustained urban policies, the Community Development Block Grant (CDBG) program and evaluates a series of political factors on local decision making in the allocations of Community Development Block Grant dollars.

Using path analysis, the research explores the statistical significance of social, economic and political factors combined with historical …

Thank You For Your Time! Would You Mind Donating To Our Cause? The Effect Of Gratitude On Prosocial Behavior, Matthew L. Hortt

UNLV Theses, Dissertations, Professional Papers, and Capstones

A random assignment experiment examined the effects of three expressions of gratitude on two prosocial behaviors: volunteering and making monetary donations to charitable organizations. The results indicated that two of the expressions of gratitude had a significant opposite effect on the two prosocial behaviors. Both a verbal thank-you speech and a hand written thank-you note, resulted in a significant reduction in the amount of pledged volunteer hours, while resulting in a significant increase in the amount of pledged charitable dollars. The third expression of gratitude, a ten dollar thank-you gift card, produced no significant findings for either prosocial behavior. The …

The Role Of Adaptive Capacity On The Subjective Career Success Of Former D-I African-American Male Athletes: A Mixed-Method Study, Leon Antonio Jackson

UNLV Theses, Dissertations, Professional Papers, and Capstones

African-American male student-athletes who played a revenue-generating sport enter the labor market having relatively poor social networks, low grade point averages, few marketable skills outside of sports, restricted work experiences, and marginal subject matter knowledge; most of which are the result of their participation in sports (Singer, 2008). Therefore making the transition more difficult than even the average African-American male (Edwards, 1980). The purpose of this study was to: (1) Determine the factors that predict subjective career success for former D-I African-American male athletes who played a revenue-generating sport, and (2) Explore how former D-I African-American male athletes, who played …

The Impact Of Parental Divorce On Children's Confidence Levels In Young Adulthood, Lawrence Jackson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Divorce continues to be a life transition that affects a substantial amount of adults and children each year. In addition to the impact that divorce can have on adults involved, the impact of divorce is amplified greatly when there are children involved. Divorce can have long-term effects and may influence children’s relationship satisfaction, trust, commitment in intimate relationships, and optimism (Mustonen, Huurre, Haukkala, Kiviruusu, & Aro, 2011). The purpose of this study is to investigate the relationship between social support and confidence levels for those impacted by parental divorce. Social support includes guidance counseling, service support, or financial support (Kitson, …

Cbct Evaluation Of Adolescent Mandibular Morphology In Different Classifications Of Facial Type, Annie Hsu

UNLV Theses, Dissertations, Professional Papers, and Capstones

The goal of this study is to use the improved imaging capability of cone-beam computerized tomography (CBCT) to investigate the relationship between vertical facial patterns and mandibular tooth-alveolar morphology in the adolescent population. Pre-treatment orthodontic records were obtained from the UNLV School of Dental Medicine archival dental records. One hundred and seventy three patients (72 males, 101 females) between the ages of 12 and 18 years were included in this study. Among these patients, 61 displayed the vertical growth pattern, 30 displayed the horizontal growth pattern, and 82 displayed the average growth pattern. The samples were categorized into 4 age …

Study Of Machine Learning Methods In Intelligent Transportation Systems, Vishal Jha

UNLV Theses, Dissertations, Professional Papers, and Capstones

Machine learning and data mining are currently hot topics of research and are applied in database, artificial intelligence, statistics, and so on to discover valuable knowledge and the patterns in big data available to users. Data mining is predominantly about processing unstructured data and extracting meaningful information from them for end users to help take business decisions. Machine learning techniques use mathematical algorithms to find a pattern or extract meaning out from big data. The popularity of such techniques in analyzing business problems has been enhanced by the arrival of big data.

The main objective of this thesis is to …

An Examination Of U.S. Restaurant Firms' Internationalization In A Risk Context, Soyeon Jung

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this dissertation is to advance the theoretical and practical understanding

of the relationship between publicly traded U.S. restaurant firms’ internationalization as a

corporate strategy and risks using a comprehensive set of risk measures: 1) market-based risk (i.e., systematic and unsystematic risk) and 2) accounting-based risk (i.e., standard deviation of return on assets (ROA), return on equity (ROE), and earnings per share (EPS) during the period of 2000-2013. This dissertation further investigates linear, nonlinear, and lagged effects of internationalization on restaurant firms’ risks. In summary, the findings of this dissertation reveal that internationalization tends to mitigate systematic risk, …

Evidence-~Based Practices: An Exploratory Study Concerning School District Professional Development Considerations, Pamela Marie Juniel

UNLV Theses, Dissertations, Professional Papers, and Capstones

The identification and implementation of evidence-based practices by special education and general education teachers continues to be an issue in the field of education (Cook & Cook, 2011; Cook, Tankersley, Cook, & Landrum, 2008). Since the mandates of providing students with disabilities access to the general education curricula (IDEA, 2004) with services based on empirical research (NCLB, 2001) are required, teachers are implored to improve their teaching skills (Cook et al., 2008). Recently, the field of education has made efforts to support teachers in the identification and use of evidence-based practices by establishing a system and process for identifying evidence-based …

Solving Differential Equations With Least Square And Collocation Methods, Katayoun Bodouhi Kazemi

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this work, we first discuss solving differential equations by Least Square Methods (LSM). Polynomials are used as basis functions for first-order ODEs and then B-spline basis are introduced and applied for higher-order Boundary Value Problems (BVP) and PDEs. Finally, Kansa's collocation methods by using radial basis functions are presented to solve PDEs numerically. Various numerical examples are given to show the efficiency of the methods.

Examining The Dynamics Of Infant Face Processing Using State Space Grids, Andrea Jane Kayl

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this investigation we examined the potential processes underlying infant preferences for and categorization of male and female faces as well as the outcome of these preferences. Infants with female primary caregivers exhibit preferences for same-race females over males and categorize females more readily than males. Little is known, however, about how infants may arrive at these collective preferences and categorization abilities. In research settings infants are exposed to novel stimuli in relatively short periods of time, and their experiences outside of the lab may be imposing structure onto their learning in lab settings. We used state space grids (SSGs) …

Experiencing Parental Loss During Adolescence And Factors Influencing Hospital Involvement And The Grieving Process, Vaida Kazlauskaite

UNLV Theses, Dissertations, Professional Papers, and Capstones

Experiencing the death of a loved one can be traumatic and painful to anyone. Adolescents in particular experience death in a unique way, during a time in their lives when they are developing their own autonomy and independence. Experiencing the deteriorating conditions of a terminally ill parent may affect an adolescent in many ways. However, there is relatively little research on adolescent involvement in the medical setting during a parent’s terminal illness and how this may affect the adolescent’s bereavement. This qualitative study utilized heuristic inquiry and procedures of Grounded Theory to investigate factors influencing the involvement in the hospital …

Vitamin D Status And Bone Mineral Density In Female Collegiate Dancers And Cheerleaders, Tara Sue Kenny

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: An athlete’s bone mineral density reflects their cumulative history of energy availability, physical activity, genetic predisposition for bone health, and menstrual status, as well as nutritional, behavioral, and environmental factors.

Purpose: To determine if bone mineral density (BMD) and nutritional factors in bone health are different in two groups of female athletes who have comparable body size/weight requirements, but who engage in qualitatively different training regimens.

Methods: Participants were female collegiate athletes who were members of the UNLV Dance team (n=10) or Cheer team (n=9), ages 18-22. Participants vitamin D status was assessed by obtaining a finger prick sample …