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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 …

Adapting And Piloting An Evidence-~Based Hiv/Aids And Teen Pregnancy Prevention Intervention For Native American Teens, Murlynn Crystal Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: Native American youth are at disproportionate risk for HIV infection. Native Americans represent about 1.7% of the U.S. population, yet they rank fifth in HIV/AIDS diagnosis nationwide (U.S. Census, 2012; CDCd 2013). Native Americans with HIV/AIDS are more likely to be younger than non-Native Americans with the disease. There are limited evidence-based HIV/AIDS and teen pregnancy prevention interventions that have been developed, adapted, and/or evaluated for Native American teens. The purpose of this study was to adapt an existing evidence-based HIV/AIDS and teen pregnancy prevention intervention into a culturally responsive intervention curriculum for Native teens. Methods: There were three …

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 …

Understanding Employee Work Attitudes: An Integration Of Psychological Contract Theory And Organizational Support Theory, Wen Chang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Employee motivation and retention are critical concerns for the hospitality industry. The purpose of this study was to understand employees’ work attitudes and emotional affect through a social exchange perspective by integrating employee psychological contract theory and organizational support theory. Affective event theory provided the theoretical foundation for this study. Data was analyzed using exploratory factor analysis and path analysis. The results showed that employees’ psychological contract fulfillment was a strong predictor of their perceived organizational support. In addition, psychological contract fulfillment and perceived organizational support together explained employee affect at work as well as other work attitudes. Affect at …

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 …

Sound Attenuation Of Fiberglass Lined Ventilation Ducts, Jacob Albright

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sound attenuation is a crucial part of designing any HVAC system. Most ventilation systems are designed to be in areas occupied by one or more persons. If these systems do not adequately attenuate the sound of the supply fan, compressor, or any other source of sound, the affected area could be subject to an array of problems ranging from an annoying hum to a deafening howl. The goals of this project are to quantify the sound attenuation properties of fiberglass duct liner and to perform a regression analysis to develop equations to predict insertion loss values for both rectangular and …

Picrolite And The Cypriot Neolithic: An Experimental Study, Forrest Dayton Jarvi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Picrolite, a fibrous green stone originating in the Troodos mountains on the island of Cyprus, appears in the archaeological record almost from the very earliest sites on the island. Thus far, few publications have addressed the material from anything but a descriptive perspective. Research at the Aceramic Neolithic site of Kritou Marottou Ais Giorkis has uncovered a wide variety of picrolite artifacts since excavations began in 1997. Preliminary experimental studies have begun to explore the ease of both obtaining and manipulating the material using only local materials and unassisted manpower. This thesis presents a three-part investigation into the place of …

Simulation Of An Air Cooled Single-Effect Solar Absorption Cooling System With Evacuated Tube Collectors, Mohsen Jahandardoost

UNLV Theses, Dissertations, Professional Papers, and Capstones

Consistently increasing CO2 emission and ozone depletion from synthetic refrigerants are serious environmental issues challenging the scientific community. Absorption cooling systems give scope of utilizing low grade energy source for generating cooling effect. Solar energy is one of these low grade energy sources and with considering the fact that cooling demand increases with the intensity of solar radiation, solar refrigeration has been considered as a logical solution.

This thesis consists of two different simulation stages, in the first stage, a single effect lithium bromide absorption cooling system with constant cooling capacity is modeled and the effect of ambient and generator …

Rewetting Of Artificially Desiccated Soils: Effect Of Gravity On Vapor-Phase Diffusion, Taylor Arland Ball

UNLV Theses, Dissertations, Professional Papers, and Capstones

Soil desiccation has been suggested as an economically viable alternative for stabilizing water soluble contaminants in deep vadose zones such as at the Hanford Site. This approach would result in a large volume of the vadose zone being dried out in an effort to eliminate the transport mechanism for aqueous phase contaminants. Protecting the top and sides of the desiccated vadose zone from rewetting is a realistic possibility; however, it would be extremely difficult to restrict the upward migration of water from beneath the desiccated zone. One scenario related to the rewetting of the desiccated soil involves the upward migration …

Compression Of Climate Data Through Artificial Neural Networks, Astha Puri

UNLV Theses, Dissertations, Professional Papers, and Capstones

Lately, there has been a tremendous increase in the number of climate monitoring

stations in various parts of the country producing abundant climate data. Among climate data parameters, humidity and temperature are the two parameters influencing hydrological and agricultural processes, weather monitoring, and having critical effect on living organisms. As more data is being generated over time, there is a strong need to develop compression methods for efficient transfer and storage of this data.

The main goal of this thesis is to perform compression of humidity and temperature

data via prediction. As these are critical components of climate, it is …

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 …

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, …

Fall Detection By Using Video, Robert J. Gripentog

UNLV Theses, Dissertations, Professional Papers, and Capstones

Cameras have become common in our society and as a result there is more video available today than ever before. While the video can be used for entertainment or possibly as storage it can also be used as a sensor capturing crucial information, The information captured can be put to all types of uses, but one particular use is to identify a fall. The importance of identifying a fall can be seen especially in the older population that is affected by falls every year. The falls experienced by the elderly are devastating as they can cause apprehension to normal life …

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.

The Arab Uprisings: An Assessment Of The Roots And Implications Of Contemporary Mobilization In The Arab World, Autoosa Elizabeth Kojoori-Saatchi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Much of the existing theories of mobilization appear to focus on either micro or macro level elements that lead to mobilization, very few seem to focus on fusing the two; specifically psychological dynamics with macro structural components. This dissertation seeks to synthesize the two together to explain how psychology, specifically the perception of deprivation exacerbated by heightened social interaction through technology has introduced a new element to politics in the Middle East and North, which has furthered awareness of the exploitative nature of neoliberalism and the impact that the system has on the greater Arab populace. This dissertation explains how …

Differences In Disease Reporting: An Analysis Of State Reportable Conditions And Their Relationship To The Nationally Notifiable Conditions List, Brian Labus

UNLV Theses, Dissertations, Professional Papers, and Capstones

The basis of public health surveillance is the reporting of diseases and conditions to the health department by clinicians and laboratories. In the United States, over eighty diseases and conditions of national importance (e.g., tuberculosis, syphilis, and cancer) are included on the list of Nationally Notifiable Conditions (NNC) for submission to the Centers for Disease Control and Prevention (CDC) by the states. The legal basis for disease reporting is found at the state level, where inconsistent laws may differ in terms of which conditions are reportable and their reporting process. The process by which states require the reporting of NNCs …

An Evidence Based Approach To Sepsis: Educational Program, Dolores Perez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Evidence-based guidelines for recognizing and treating sepsis have been available for decades, yet healthcare providers do not adhere to the recommendations. Sepsis can progress rapidly if not recognized early. Literature reports reveal that sepsis is the leading cause of death in non-cardiac intensive care units (ICUs), and it is one of the most expensive conditions to treat. A hospital in the Las Vegas, Nevada area had previously introduced sepsis management prescriptions in 2011 with no formal education of sepsis guidelines to nurses. The original hospital’s sepsis management prescription sets followed guidelines dated 2008. The purpose of this project was to …

Multicultural Education In Action: A Multiple Case Study Of Black Elementary Aged Children's Identity Development And Engagement With Civil Rights Literature, Rebekah E. Piper

UNLV Theses, Dissertations, Professional Papers, and Capstones

In the United States education system a large achievement gap between African American and Latino students compared to White American students exists. Various studies have documented the gap, but there has not been much success in closing it. Recognizing that the educational system is growing more, not less, diverse, including due to the rise in enrollments of students of color and the decrease of the same by white students based on birthrates and immigration trends, the success of this increasingly diverse student population is even more important to the success of the nation. Preparing teachers to integrate multicultural content and …

Ediacaran Ocean Redox Evolution, Swapan Kumar Sahoo

UNLV Theses, Dissertations, Professional Papers, and Capstones

The relative role that environmental versus intrinsic biological factors played in

shaping the history of life on Earth is a fundamental but unanswered question in the

natural sciences. Most famously, it has been heavily debated if the emergence and

diversification of early animals during the Ediacaran Period (ca. 635–541 Ma) was tied to

a rise in atmospheric-oceanic oxygen levels. Temporally discontinuous geochemical data and patchy fossil record in literature are inadequate to chart the Ediacaran redox history and its causal relationship with the biotic evolution. My PhD study aims for a multiproxy geochemical record within a well-established stratigraphic framework of …

Dissolution Of Nontronite In Low Water Activity Brines And Implications For The Aqueous History Of Mars, Michael Henry Steiner

UNLV Theses, Dissertations, Professional Papers, and Capstones

Water is essential to life on Earth and is likely to play a role in determining the habitability of other planets. Pure liquid water is not stable on the surface of Mars but brines can temporarily remain liquid, and increasing evidence suggests the presence of recent liquid water, including brines, on Mars. Brines can host life at temperatures as low as -30 ºC and some organisms can live at activities of water as low as 0.61. Therefore, if brines have been present on Mars, they may act as habitable environments.

The Fe-rich smectite nontronite, (CaO0.5,Na)0.3 Fe3+2(Si,Al)4O10(OH)2·nH2O, has been detected on …

Safety Analysis Of Freeway Segments With Unobserved Heterogeneity And Second Order Spatial Effects, Eneliko Mujuni Mulokozi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Safety analysis of freeway networks entails the quantification of crash frequency influencing factors which include roadway and traffic characteristics, environmental factors as well as human factors. This quantification can be used to detect locations with large impacts on the occurrence of crashes which in turn assist engineers and planners to improve safety levels of the network. Roadway characteristics are comprised of the physical elements of the road geometry such as section length, median and right shoulders, speed-exchange lanes, the number of main facility as well as geometry of the entrance from and exit to the main freeway facility. Traffic characteristics …

Nevada Legal Services: The Legal Services Corporation Restrictions And The Diminishing Capacity Of Access To Justice For The Poor, William Todd Ashmore

UNLV Theses, Dissertations, Professional Papers, and Capstones

The lofty idea of equal justice for all is not the reason legal aid began in the United States. Legal aid was born from the indignation over injustices committed against the poor. Unable to afford an attorney, the poor could not effectively assert their rights within the criminal and civil justice system. Without access to justice through the courts, the extralegal activities required to defend oneself and exact justice such as personally forcing an employer to pay rightful wages, are deemed criminal in most cases. By providing legal resources to the poor, legal aid not only brought order to society …

A Performer's Guide To Dean Gronemeier's Nature Alley, Lonny James Benoit

UNLV Theses, Dissertations, Professional Papers, and Capstones

This document is a resource designed to aid performers in preparation of Dean Gronemeier’s Nature Alley, an advanced four-mallet solo for marimba. A biographical sketch of Dean Gronemeier, general overview of the composition, and the seven main themes of Nature Alley are presented within this document. Specific attention will be given to the musical and technical considerations associated with each of the seven themes.

Fast Transient Digitizer And Pcb Interface, Kevin Thomas Buck

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis outlines the design, layout and characterization of an application specific integrated circuit (ASIC) and a printed circuit board (PCB) designed to discretize an input signal and read out the data at a user desired interval to replicate the input signal at a lower frequency or pulse rate with no quantization error. The ASIC for this task utilizes 128 individual capacitive storage cells to capture data at approximately 200 ps intervals, thus the chip can capture approximately 25 ns of an input signal. The read out rate can be adjusted to the desired rate by the user by changing …

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 …

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 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, …

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 …