Digital Commons Network^™

Identity And Intersectionality For Big City Mayors: A Phenomenological Analysis Of Black Women, Constance J. Brooks

UNLV Theses, Dissertations, Professional Papers, and Capstones

The role of a mayor is integral within local governance. Their leadership and influence directly effectuates outcomes for the cities over which they preside. For big city mayors, their impact extends beyond local government and into the national policy arena. The way an individual demonstrates the role of mayor can be influenced by his/her perception of their own identity. However, within the realm of academic research dedicated to mayoral leadership and African Americans in politics, Black female mayors have largely been ignored. In particular, there are no known attempts at investigating the intersection of race and gender in understanding Black …

Taiwanese Willingness To Communicate In English: Can Watching American Television Programs Help?, Yu-Ting Chien

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study explored the relationship between Taiwanese audiences' use of American television programs and their willingness to communicate in English. Taiwanese participants filled out an online survey consisted of questions from uses and gratifications constructs and willingness to communicate constructs. In addition, different subtitle settings were also examined.

Results indicated that participants with high integrative motivation consuming information from American television programs, in addition, the setting of subtitles were associated with perceived communication competence, integrative motivation, language anxiety and social interaction motivation.

Restoration Of Biological Soil Crust On Disturbed Gypsiferous Soils In Lake Mead National Recreation Area, Eastern Mojave Desert, Lindsay P. Chiquoine

UNLV Theses, Dissertations, Professional Papers, and Capstones

Biological soil crusts (BSCs) are sensitive to anthropogenic disturbances. Natural recovery takes many years. Active restoration decreases recovery time. Native BSC inocula, which included lichens and mosses, salvaged from gypsiferous soil habitats in Lake Mead National Recreation Area (LMNRA) in the eastern Mojave Desert were stored dry for two years and applied to disturbed soil after a road reconstruction in LMNRA and also used in laboratory experiments to test inoculation technique effectiveness. After 18 months, field results revealed positive relationships between inoculation and the presence of macroscopic BSC cover, cyanobacteria abundance, soil stability, and ammonium concentrations. Chlorophyll fluorescence monitoring of …

A Gauge Theoretic Treatment Of Rovibrational Motion In Diatoms, Gregory Colarch

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Born-Oppenheimer approximation has long been the standard approach to solving the Schrödinger equation for diatomic molecules. In it, nuclear and electronic motions are separated into "slow" and "fast" degrees of freedom and couplings between the two are ignored. The neglect of non-adiabatic couplings leads to an incomplete description of diatomic motion, and in a more refined approach, non-adiabatic couplings are uncoupled by transforming the angular momentum of the molecule and electrons into the body-fixed frame.

In this thesis we examine a "modern" form of the Born-Oppenheimer approximation by exploiting a gauge theoretic approach in a description of molecular motion. …

Ore And Gangue Mineral Paragenesis Of The Cortez Hills Carlin-Type Gold Deposit, Nevada: Evidence For Coincident High-Grade Gold Deposition And Collapse Brecciation, Lindsey R. Clark

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Cortez Hills Carlin-type gold deposit (CTGD), located on the Battle Mountain-Eureka trend of Northern NV, is hosted in a conical shaped polylithic breccia whose central axis strikes parallel to the imbricate Voodoo fault system. Gold grades at the center of the Cortez Hills Breccia Zone (CHBZ) are locally in excess of an ounce per ton. Gold mineralization within the refractory ore at Cortez Hills shares many characteristics with other well studied CTGDs. However, new observations during this study have recognized 1) fragmented realgar that are rimmed by gold-bearing iron-sulfide minerals in four samples, 2) a Hg- and Tl-rich late-ore …

"Carefull" Ethos: The Construction Of Ethos In Dorothy Leigh's The Mothers Blessing, Julia D. Combs

UNLV Theses, Dissertations, Professional Papers, and Capstones

As one of the most popular conduct manuals in the early seventeenth century, Dorothy Leigh's The Mothers Blessing is often categorized as private, domestic literature. In this dissertation, I examine the strategies Leigh employed to create ethos, and I argue that her strategic depiction of herself as a "fearefull, faithfull, carefull" mother helped her authorize herself as a public figure. Specifically, I investigate the strategies Leigh employed to create a persuasive ethos within the genre of the conduct manual. Through mother-based ethos strategies, Leigh presented herself deliberately, augmenting her authority as Mother and positioning her work within a male-dominated print …

Mega-Renters: Who Are They And How Do They Operate?, Stefan William Cosentino

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation investigates individuals who have acquired an extraordinary number of vacation ownership (timeshare) points or weeks and utilize their ownership for the purposes of generating income by renting their room reservations to the third parties. Individuals who operate in this context have been referred to as mega-renters on blogs such as the Timeshare Users Group website (Tug2.net), commonly referred to as Tug, which is an online forum where owners of timeshare share information about their ownership.

The timeshare or vacation ownership product is a leisure product that provides consumers luxury accommodations and or vacation experiences. Academic opinion based on …

A Phenomenological Study On The Leadership Development Of African American Women Executives In Academia And Business, Deanna Rachelle Davis

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this qualitative phenomenological study was to explore the intersectionality of race and gender for African American women through their lived experiences of how they developed into leaders. This research study was designed to determine how the intersection of race and gender identities contributed to the elements of leadership development as perceived by eight African American female executives in academia and business. The researcher sought to explore strategies future leaders might utilize to address leadership development and career ascendency for African American females who aspire to leadership roles. A phenomenological research method was most appropriate for this research …

Evaluation Of The Tagelus® Ta 100d Sand Filter For Removing Quagga Mussel Veligers (Dreissena Rostriformis Bugensis) From Lake Water And The Effectiveness Of The Safeguard Ultraviolet Radiation System As A Biocide Against Veligers, Patricia Kathleen Delrose

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Lake Mead National Recreational Area was created by the construction of the Hoover Dam during the years 1931-1936. In January 2007, the quagga mussel (Dreissena rostriformis bugensis), was found in Lake Mead. This became the first known Dreissenid species in the southwest and the only time a large water system was first infested by the quagga mussel and not the zebra mussel (Dreissena polymorpha). This invasive species has quickly spread to Lake Mohave and further down the lower Colorado River drainage. The microscopic size (70 µm or larger) of the veliger life stage makes it impossible to see with …

The Meaning Of The Lived Experience Of Nursing Faculty On A Dedicated Education Unit, Deborah Ann Demeester

UNLV Theses, Dissertations, Professional Papers, and Capstones

In 2011, 58,327 qualified applicants were denied admission to U.S. baccalaureate programs due to an inadequate number of qualified faculty, insufficient clinical placement sites, and resource constraints. Nursing faculty leaders are being challenged to increase enrollment to address a projected worsening nursing shortage and to transform prelicensure nursing education to ensure that program graduates have the nursing skills and competencies to meet the health care needs of the population.

Collaborative educational partnerships offer promising strategies to diminish the nursing faculty shortage, educate more students, and provide stable, rich learning environments. The Dedicated Education Unit (DEU) model is one of these …

Closing Up Shop: Meditations On The Departmental/Programmatic Elimination Experience, Susan Beth Donoff

UNLV Theses, Dissertations, Professional Papers, and Capstones

Departmental and programmatic eliminations represent a new paradigm in the history of American higher education. Hastened by a national economic recession and competing state funding priorities, public post-secondary institutions have turned to academic attrition as a solution to continuous budgetary shortfalls. As a means of addressing the lived experience of faculty members and department chairs, the following qualitative case study explores perceptions of implementing departmental and/or programmatic eliminations.

Utilizing uncertainty reduction theory as a conceptual framework, interviewed faculty in saved units experienced considerable strategic uncertainty, failing to understand why they had been selected for elimination. Guided by a college-wide strategic …

Elemental Contributions From Minor And Major Constituents Of Bone On The Separation Of Radiostrontium, Ashlee Rae Dailey

UNLV Theses, Dissertations, Professional Papers, and Capstones

While many methods exist to separate and analyze radionuclides from a variety of environmental matrices, the performance of all of these methods is often limited by other interfering constituents that are consistently found in most of these samples. The presence of such constituents can significantly reduce the recovery of the radioisotopes of interests and lead to incomplete separations.

Strontium has the same oxidation state and a similar atomic radius as calcium and is therefore readily able to substitute for calcium in lattice sites. This similarity in behavior leads to the preferential accumulation of strontium in newly formed bone. The study …

Morphological Features Of The Proximal Femur: Investigations Of Habitual Activities, Sex And Health In A Bronze Age Population From The Arabian Peninsula, Animikha Dutt

UNLV Theses, Dissertations, Professional Papers, and Capstones

Bronze Age sites on the Arabian Peninsula are relatively rare. The undisturbed nature of Tell Abraq, located in the United Arab Emirates, is significant since it represents one of the longest known occupied settlement sites dating from the 3rd millennium BC to the 1st century AD. This site has revealed an undisturbed communal tomb that was used for approximately 200 years (2200-2000 BC), housing commingled and disarticulated human remains of at least 286 adults and 127 subadults. The strategic coastal position of Tell Abraq, at the intersection of several major cultural centers, allowed its people to actively participate in world …

Hardware-Software Co-Design, Acceleration And Prototyping Of Control Algorithms On Reconfigurable Platforms, Desta Kumsa Edosa

UNLV Theses, Dissertations, Professional Papers, and Capstones

Differential equations play a significant role in many disciplines of science and engineering. Solving and implementing Ordinary Differential Equations (ODEs) and partial Differential Equations (PDEs) effectively are very essential as most complex dynamic systems are modeled based on these equations. High Performance Computing (HPC) methodologies are required to compute and implement complex and data intensive applications modeled by differential equations at higher speed. There are, however, some challenges and limitations in implementing dynamic system, modeled by non-linear ordinary differential equations, on digital hardware. Modeling an integrator involves data approximation which results in accuracy error if data values are not considered …

The Retention And Success Of Alternatively Admitted Student Athletes: A Case Study Of The Unlv Athletic Department, Adrienne Ekas-Mueting

UNLV Theses, Dissertations, Professional Papers, and Capstones

The aim of this exploratory study is to determine why student athletes admitted under University of Nevada, Las Vegas's (UNLV) alterative-admissions policy are successful, specifically by looking at the UNLV Athletic Department's institutional practices. Alternatively admitted athletes are the recipients of these practices. Although there is some research on the predictors of success for college-student athletes, the literature on alternatively admitted student-athlete success is negligible. This appears to be a specialty subgroup of students, and the institutional practices that contribute to their success should be identified and explored.

The purpose of this study was to qualitatively investigate and analyze whether …

Petrogenesis Of The East Fork Member Rhyolites, Valles Caldera, New Mexico, Usa, Carla Eichler

UNLV Theses, Dissertations, Professional Papers, and Capstones

The most recent volcanism in the Valles caldera is represented by the El Cajete Pyroclastic Beds (ECPB), Battleship Rock Ignimbrite (BRI), and Banco Bonito Flow (BBF) as well as the VC-1 rhyolite, which are collectively known as the East Fork Member (EFM) of the Valles Rhyolite. The EFM was erupted at approximately 55 ka and 40 ka after an approximate 460 ka lull in volcanism. Previous studies suggested a mafic intrusion at depth triggered the eruptions. This thesis represents the first detailed study of the EFM.

Crystal assemblages consist of plagioclase, biotite, clinopyroxene, orthopyroxene, amphibole, sanidine, quartz, and oxides. Electron …

Volcanic Evolution Of The Southern Quinn Canyon Range: Implications For Regional Correlation Of Volcanic Units, Christina Emery

UNLV Theses, Dissertations, Professional Papers, and Capstones

The southern Quinn Canyon Range lies in an area of the Great Basin subjected to large-volume Oligocene-Miocene silicic volcanism and smaller volume basaltic volcanism during the Pliocene. Three major ash-flow tuff units were correlated in the southern Quinn Canyon Range (the Pahranagat Tuff, Clifford Spring Tuff, and the Cow Canyon Tuff) with regional units by utilizing U/Pb and 40 Ar/ 39Ar geochronology, geochemical correlation, and field mapping. Isotopic analysis suggests that basalt in the southern Quinn Canyon Range is part of the Death Valley-Pancake Range Basalt Zone and is similar to Reveille Range Episode 1 and 2 basalts. Further comparison …

Factors Contributing To The Educational Success Of Single-Mother Welfare Recipients At An Urban Southwestern Community College: Case Studies Of Six Success Stories, Rhonda Rose Faul

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study gave voice to the issues, needs, and concerns of economically disadvantaged single mothers and determined the motivational and institutional factors that helped lead them to their successful completion of a community college degree or certificate program while at the same time coping with the challenges of financially surviving on meager public welfare assistance, raising their children, and meeting welfare-mandated work activity requirements. While American society has a long tradition of regarding higher education as a means of achieving long-term financial security and self-sufficiency, current welfare policy unfortunately adds additional obstacles for welfare recipients who may be motivated to …

Superintendent Leadership During Economic Austerity: A Multiple Case Study, Douglas Paul Finch

UNLV Theses, Dissertations, Professional Papers, and Capstones

In contrast with recent decades of economic growth and stability, today's education funding landscape appears to be entrenched in a pattern of diminishing financial resources that may persist for a number of years. This is occurring also amid unprecedented efforts by lawmakers and public officials to intervene in school reform work. School leaders, specifically superintendents of the public school districts, are expected to make difficult leadership decisions in cutting back and downsizing the district organization while still maintaining an innovative and positive environment in schools. The effective leader must be well informed of best practices in positively influencing critical determinants …

A Historical Case Study Of School Desegregation And Resegregation In Las Vegas, Nevada, 1968-2008, Felicia Forletta

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to document and examine the perspectives of members of a historically African American community located in Las Vegas, Nevada (historic West Las Vegas) concerning equal education and school desegregation and resegregation in the Clark County School District from 1968 to 2008. Using historical case study methods, this study sought to provide a historical description and analysis of the social, political, and cultural contexts that shaped decades of school desegregation and resegregation in this historically African American community. Data sources included: legal cases and court documents; archived news, newsletters, newspaper and magazine articles; (3) Clark …

Comparison And Simulation Of Salt-Ceramic Composites For Use In High Temperature Concentrated Solar Power, Lauren Michelle Fossile

UNLV Theses, Dissertations, Professional Papers, and Capstones

Due to the inherently intermittent nature of solar energy caused by cloud cover among other sources, thermal storage systems are needed to make solar energy more consistent. This same technology could be used to prolong the daily number of useful hours of solar energy power plants. Salt-ceramic materials are a relatively new prospect for heat storage, but have been researched mostly with magnesium oxide and several different carbonate salts. Salt ceramics are a phase change material where the salt changes phase inside the ceramic structure allowing for the system to use the sensible heat of both materials and the latent …

School Reform: Where Does Policy Come From? Where Should It Go?, Kim Karman Friel

UNLV Theses, Dissertations, Professional Papers, and Capstones

Policy analysis helps to develop a greater understanding of societal problems and provide possible solutions for elected and non-elected government decision makers. Ultimately, the product of analysis is advice relating to public decisions and informed by social values. In light of the pressures placed on education by policy-makers concerning implementation of educational reform there are surprisingly few studies concerning the changing role of the federal government from a historical perspective. Looking at the past, with the present in mind, reminds us that the current shape of education was not inevitable.

This qualitative dissertation study analyzes the evolution of the intentions …

Characterization Of Beryllium As A Novel Agent To Study Cell Cycle Arrest And Cellular Senescence, Priyatham Gorjala

UNLV Theses, Dissertations, Professional Papers, and Capstones

Cancer cells evade senescence, apoptosis, and other constraints on proliferation, often via mutation of the p53 tumor suppressor gene (TP53). Normal human lung fibroblasts have been shown to enter premature senescence upon exposure to beryllium. In these cells, BeSO₄ stabilizes p53 protein, increases p21 gene expression, induces senescence-associated β-galactosidase activity and causes cell proliferation arrest. In the present study, we have investigated whether BeSO₄ is able to induce similar effects in cancer cells that have wildtype p53. We have demonstrated that beryllium salt at low concentration can induce molecular changes in the p53 signaling pathway leading to cell …

Community Perspectives On Black Parent Engagement In West Las Vegas Before And After Desegregation: A Case Study, Tonia Faye Holmes-Sutton

UNLV Theses, Dissertations, Professional Papers, and Capstones

According to research on parent engagement in K-12 schools, disconnects often exist between parent involvement as defined by school leaders and the African American families and communities they serve (Delgado-Gaitan, 1991; Tillman, 2009). Unfortunately, these competing definitions and conceptions of parent involvement often result in school leaders and administrators perceiving that Black students do not achieve as well as their White peers because Black parents are not involved or engaged in the education of their children (Cooper, 2010; Cooper, 2009; Fields-Smith, 2005). This perception undermines the development of positive home-school relations between school leaders, educators, and Black parents, and in …

The Motivating Language Of Principals: A Sequential Transformative Strategy, William Tobias Holmes

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study implemented a Sequential Transformative Mixed Methods design with teachers (as recipients) and principals (to give voice) in the examination of principal talk in two different school accountability contexts (Continuously Improving and Continuously Zigzag) using the conceptual framework of Motivating Language Theory. In phase one, teachers were surveyed using the ML Toolbox. The survey was administered using the Dillman Tailored Design Method, and the return rate was 67.48%. The major findings that emerged were: (a) significant differences in Motivating Language (ML), Direction-Giving Language (DG), Empathetic Language (E), and Communication Competence (CC) variables between the Continuously Improving and Zigzag Clusters; …

Anti-Germinants As A New Strategy To Prevent Clostridium Difficile Infections, Amber Janece Howerton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Clostridium difficileinfections (CDI) have emerged as a leading cause of hospital-associated complications. CDI is the major cause of antibiotic-related cases of diarrhea and nearly all cases of pseudomembranous colitis. The infective form of C. difficileis the spore, a dormant and hardy structure that forms under stress. Germination of C. difficile spores into toxin producing bacteria in the GI tract of susceptible patients is the first step in CDI establishment. Patient susceptibility occurs with a disruption of the natural gut microbiota by broad-spectrum antibiotics. Antibiotic treatments usually resolve CDI but refractory cases are on the rise. Of great concern is the …

An Estimate Of Groundwater Recharge In The Nabogo River Basin, Ghana Using Water Table Fluctuation Method And Chloride Mass Balance, Melanie Lynn Krautstrunk

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Cambrian-Precambrian fractured sandstone aquifer in the Nabogo River Basin in the Sahelian Northern Region in Ghana is one of the most important sources for fresh water supply for the local rural communities there. Recent population growth and commercial agricultural interests in this region could have an impact on this critical water resource. Groundwater recharge estimates are determined in this study using the Water Table Fluctuation Method and Chloride Mass Balance and can be applied to future sustainability studies of the region's water resources. Recharge estimates of the Water Table Fluctuation Method are in a range of 10-143 mm/yr or …

Exploring Reasons Why Men And Women Refrain From Sex Despite Desire, Alessandra Lanti

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sexual behavior has been found to be an unreliable referent for sexual desire. Numerous studies have found that sexual activity is motivated by a range of non-desire related factors, from the promotion of intimacy to the seeking of new experiences. Sexual desire may also be an unreliable predictor of sexual activity. There is a dearth of research, however, on the reasons why individuals choose not to have sex despite the presence of desire for a willing partner. The main aim of this study is to qualitatively investigate the reasons why people refrain from sex when they feel desire for a …

Dreissena Rostiformis Bugensis: Desiccation Of Adult Quagga Mussels Found In Lake Mead As A Preventive Measure Against Overland Dispersal In The Western United States, Matthew Kappel

UNLV Theses, Dissertations, Professional Papers, and Capstones

The expansion of civilization across all borders of the world has proven to affect major components of ecosystems. Since the introduction and establishment of the aquatic invasive species (AIS),Dreissena rostiformis bugensis, commonly known as the quagga mussel, into the United States there has been an extensive amount of time and money spent on controlling and preventing their expansion across the United States. The quagga mussel is of major concern because of its ability to disrupt the ecological communities in previously non-infested bodies of water, which may cause a loss in biodiversity and effect environmental health. The quagga mussel has spread …

Novel Production Techniques Of Radioisotopes Using Electron Accelerators, Daniel Robert Lowe

UNLV Theses, Dissertations, Professional Papers, and Capstones

Non-traditional radioisotope production techniques using a compact, high power linear electron accelerator have been demonstrated and characterized for the production of 18F, 47Sc, 147Pm, and 99mTc from a variety of target candidates. These isotopes are used extensively in the medical field as diagnostic and therapy radioisotopes, as well as the space industry as RTG's. Primary focus was placed on 99mTc as it constitutes approximately 80% of all diagnostic procedures in the medical community that use radioactive tracers. It was also the prime focus due to recent events at the Chalk River nuclear reactor, which caused global shortages of this isotope …