Digital Commons Network^™

Temperature Trends And Urban Heat Island Intensity Mapping Of The Las Vegas Valley, Adam Leland Black

UNLV Theses, Dissertations, Professional Papers, and Capstones

Modified urban climate regions that are warmer than rural areas at night are referred to as Urban Heat Islands or UHI. Islands of warmer air over a city can be 12 degrees Celsius greater than the surrounding cooler air. The exponential growth in Las Vegas for the last two decades provides an opportunity to detect gradual temperature changes influenced by an increasing presence of urban materials. This thesis compares ground based thermometric observations and satellite based remote sensing temperature observations to identify temperature trends and UHI areas caused by urban development.

Analysis of temperature trends between 2000 and 2010 at …

Actresses Redefining Theater And Femininity In Eighteenth-Century France, Rebecca Anne Bolen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Published in 1798 and 1800, the memoires of Hypolite Clairon and Marie-Françoise Marchand Dumesnil relate the experiences and values of individuals who lived through massive social and cultural, and eventually political, changes. How and when these two women felt the need to adhere to society's standards in comparison to those instances when they were confident enough to assert themselves illuminates the ways in which developing a public persona could open up a space for women to stretch the boundaries of feminine self-fashioning. This space was not unlimited and may have depended on actresses making concessions to societal expectations. It was …

The Lived Experiences Of Acute-Care Bedside Registered Nurses Caring For Patients And Their Families With Limited English Proficiency, Jami-Sue Coleman

UNLV Theses, Dissertations, Professional Papers, and Capstones

Approximately 8.6% of the total U.S. population is considered limited English proficient (LEP), a term that has been used by official US federal policy and will be used throughout this study. In a landmark report, the Institute of Medicine found that minorities received lower-quality health care than Caucasians even when insurance status, income, and other factors were equivalent. These differences were tied to issues such as bias, stereotypes and communication barriers between patients and their caregivers. In the hospital setting, registered nurses provide the most direct contact with patients and their families. Effective communication between patients and health care professionals …

Criticality And Characteristic Neutronic Analysis Of A Transient-State Shockwave In A Pulsed Spherical Gaseous Uranium-Hexafluoride Reactor, Jeremiah Boles

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to analyze the theoretical criticality of a spherical uranium-hexafluoride reactor with a transient, pulsed shockwave emanating from the center of the sphere in an outward-radial direction. This novel nuclear reactor design, based upon pulsed fission in a spherical enclosure is proposed for possible use in direct energy conversion, where the energy from fission products is captured through the use of electrostatic fields or through induction. An analysis of the dynamic behavior of the shockwave in this reactor is the subject of this thesis. As a shockwave travels through a fluid medium, the characteristics of …

Examining The Relationships Between Internalizing And Externalizing Problems And Academic Achievement, Lara Elizabeth Conrad

UNLV Theses, Dissertations, Professional Papers, and Capstones

The relationship between internalizing and externalizing problems and academic achievement for children and adolescents has been inconclusive. Particularly the relationship between the Behavior Assessment System for Children, Second Edition (BASC-2) reports of internalizing and externalizing problems and academic performance on the Woodcock-Johnson, Tests of Achievement, Third Edition (WJ-III:ACH). The current study examined the self and parent reports of internalizing and externalizing problems as measured by the BASC-2 and the relationship with academic skills as measured by the WJ-III:ACH. The referral source (private practice or school setting) was evaluated for severity of presenting internalizing and externalizing symptoms. Secondary data analysis was …

Investigating Potential Factors That Influence Recruitment For Parenting Skills Classes, Rachel Elizabeth Davis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Juvenile delinquency and child maltreatment are prevalent in the U.S., particularly among ethnic minority children. Although parent skills training is effective in preventing these problems, recruitment and retention rates of parents from ethnic, racial, and socioeconomic minority groups are less than satisfactory. In a qualitative study of 13 high-risk African American mothers, Davis (2009) investigated the deterrents to recruitment and participation for parent skills training programs. The resulting theory, the Mothers Shouldn't Need Help Script, explicates the relationship between the beliefs reported by these mothers and participation in parenting skills classes. To build on these findings, the overarching purpose of …

Examining Household Identity Through Lithic Technology At The Harris Site, Justin Albert Demaio

UNLV Theses, Dissertations, Professional Papers, and Capstones

Utilitarian technology is often studied by archaeologists to understand what specific functions and activities these items represent in a past population's daily life. However, it is important not to forget that technology manufacture, use, and discard is embedded in a social context. Flintknapping is a skill that requires close instruction and training so that the desired outcome can be achieved. This training requires daily mentoring from other individuals in the community, many times within one's own family. These daily interactions create learning frameworks through which craft knowledge is transmitted. Technological style and domestic processing activities can be used as an …

The Effect Of Marriage On Stage At Diagnosis And Survival In Women With Cervical Cancer, Sanae El Ibrahimi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Marriage is associated with improved health outcomes for many conditions. Married persons enjoy financial stability, social and emotional support, and tend to have better control of health risk behaviors compared to the unmarried. The marriage scene is changing continuously. Americans are marrying less or delaying the engagement to an older age. They are divorcing more, they choose cohabitation as an alternative to marriage, or engage in premarital relationships. As a consequence, barely half of Americans were married in 2011 compared to close to three quarters of Americans were married in the sixties. With the increase of the unmarried population - …

Computer-Based Stereoscopic Parts Recognition For Robotic Applications, Ahmad A. Fayed

UNLV Theses, Dissertations, Professional Papers, and Capstones

Most of robotic handling and assembly operations are based on sensors such as range and touch sensors. In certain circumstances, such as in the presence of ionizing radiation where most customary sensors will degrade over time due to radiation exposure, these sensors won't function properly. Utilizing two or more cameras (stereo vision) located outside the target zone and analyzing their images to identify location and dimensions of parts within the robot workspace is an alternative for using sensors. Object Recognition is affected by the light condition which oftentimes causes the gray-scale or red, green, and blue values to have a …

The International Monetary Fund, Power Politics, And The Changing Political Economy Of The Twenty First Century, Eduardo Flores

UNLV Theses, Dissertations, Professional Papers, and Capstones

The governance of the global economy is in a constant state of change. Since the creation of the Bretton Woods system, the International Monetary Fund has had to pursue a series of reforms to meet the changing demands of the international monetary system. At times, the Fund's institutional design has been adjusted to reflect the rise and decline in economic fortunes of member states. Other times the Fund has been resistant to change. However, the original design has proved to be durable and has overcome a number of historical challenges. Currently, two realities are challenging the institutional design of the …

Application Of (U-Th)/He And 40ar/39ar Thermochronology To The Age Of Thrust Faulting In The Sevier Orogenic Belt, Michael Giallorenzo

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Sevier fold-thrust belt of the Cordilleran orogen in the western United States is a well-studied geologic province, yet our understanding of the history of thrust faulting is still far from complete. Thermochronological methods are applied to major thrust systems from two distinct sections of the Sevier fold-thrust belt (SFTB): the Wheeler Pass thrust in the Mojave Desert section of the southern SFTB, and the Willard thrust in the Idaho-Utah-Wyoming section of the SFTB. The new thermochronological data greatly improve our understanding of the structural evolution of this extensive geologic province.

The zircon (U-Th)/He (ZHe) system records thrust-induced uplift and …

Second Language Gesture And Acculturation In Study Abroad Contexts, Christie Marie Gardner

UNLV Theses, Dissertations, Professional Papers, and Capstones

Motivationis an integral part of learning; Gestures are an important aspect of human communication, and culture plays a significant role in shaping all of these human elements. This study explores the relationship betweensocial, cultural-historical activityand second language(L2) gesture acquisitionas student motivations both drive, and emanate from, the L2 learning process. Six American students participating in a study-abroad program in Chile were evaluated at three different levels of L2 proficiency (beginning, intermediate, and advanced) for L2 gesture articulations and motivational developments. During the semester-long investigation, three audio-video recorded interviews were conducted to observe L2 gestural behaviors, and two e-mail logs were …

Experimental And Finite Element Studies Of Shock Transmission, Eldon Jerry Goddard

UNLV Theses, Dissertations, Professional Papers, and Capstones

Composite materials are more widely used today in engineering products than ever before. Shock transmission in jointed composite sections needs to be investigated to understand the affect of composite materials on the dynamic response of the system. There exists limited published work on transient shock propagation through composite sections. The aim of this study is to analyze the transient behavior of joints in composite materials subjected to low impact loads and to develop a computational model that provides an improved physics based shock model. The jointed connection will be investigated experimentally and using Finite Element Analysis (FEA). The bolted joint …

The Ethics Glass Ceiling: A Historical Analysis Of Actions By The U.S. House Of Representatives Committee On Ethics, Michael James Gordon

UNLV Theses, Dissertations, Professional Papers, and Capstones

The breaking of moral and ethical codes has been with humankind since history was first recorded. As such, the public wants to know that their elected officials are held accountable and cannot disregard enshrined legal rights without incurring broader personal and societal consequences. Within the hallowed halls of government, the "unrequested" House Committee on Ethics (HCE) provides the forum of accountability.

In this qualitative, historical case study, HCE documents are analyzed and both the internal and external motivating factors behind the actions of the HCE members are examined. Computer assisted qualitative data analysis software, namely ATLAS.ti, was used to look …

Design And Fabrication Of An Infrared Optical Pyrometer Asic As A Diagnostic For Shock Physics Experiments, Jared Gordon

UNLV Theses, Dissertations, Professional Papers, and Capstones

Optical pyrometry is the sensing of thermal radiation emitted from an object using a photoconductive device to convert photons into electrons, and is an important diagnostic tool in shock physics experiments. Data obtained from an optical pyrometer can be used to generate a blackbody curve of the material prior to and after being shocked by a high speed projectile. The sensing element consists of an InGaAs photodiode array, biasing circuitry, and multiple transimpedance amplifiers to boost the weak photocurrent from the noisy dark current into a signal that can eventually be digitized. Once the circuit elements have been defined, more …

"What's In A Name?": Heteroglossia And History In Native Alaskan Names, Shannon Hannahs

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis examines Native Alaskan personal names and naming practices and how these names are being used to index cultural identity in Anchorage, Alaska. In order to do this, I follow Mikhail Bakhtin's theory of heteroglossia (1981), which states all words are populated with meaning from all of the contexts in which they have been used in the past. Native Alaskan personal names should be considered heteroglossic based on the Yup'ik/Cup'ik and Inupiaq beliefs that personal names are a type of soul that carries with it the characteristics of a person who uses it. When that person dies, the name-soul …

Managerial Behavioral Complexity And The Collegiate Registrar, Katherine Jeanette Humphreys

UNLV Theses, Dissertations, Professional Papers, and Capstones

Colleges often put an emphasis on the student experience and the student as a "customer" that should be courted, tracked, and understood. Yet, there are few academic studies that address the administrative roles that oversee the offices with direct student contact. All colleges have a registrar's office, or an office responsible for much of the institution's infrastructure from enrollment to graduation. Gunn & Backes (1992) point out, "In a climate where schools are competing for the best students, something as simple as making the registration system run smoothly and efficiently for the student can have major impacts, providing services that …

The Other September 11th: El Mercurio Media Coverage After The Chilean Coup Of 1973, Valeria Andrea Gurr-Ovalle

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis provides an exploratory overview of the role the El Mercurio newspaper played along with the military after the Chilean coup of 1973. The study reviews the contents of the newspaper's front pages, including their coverage of the events during the coup. The thesis will show how the paper revisited its coverage each year on the anniversary -- September 11th and 12th -- beginning with the years dominated by the military government, from 1973 through 1990, and continuing through the transition to democracy, from 1991 through 2007. The primary method used in the course of this examination is a …

What Works In Suicide Bereavement: What Helps And What Hurts?, Quintin Hunt

UNLV Theses, Dissertations, Professional Papers, and Capstones

Suicide is one of the most painful grief experiences that any family may experience. The suicide bereavement literature, though small, is replete with research that shows family and systemic impacts of suicide. The literature also includes constant calls for family- and systemic-based intervention as every part of society is impacted. Research in the field of marriage and family therapy, however, has ignored suicide and suicide bereavement almost entirely. The purpose of this qualitative study is to develop a more thorough understand of the grief that survivors of suicide experience and to systemically understand what helps and hurts the grieving process. …

3-D Oropharyngeal Airway Analysis Of Different Antero-Posterior And Vertical Craniofacial Skeletal Patterns In Children And Adolescents, Chi Kim Huynh

UNLV Theses, Dissertations, Professional Papers, and Capstones

Sleep apnea disorder has recently emerged as a significant public health issue. While the prevalence of obesity is on the rise among children, it is one of the main risk factors associated with apnea. Upper airway dimensions and morphology seem to be major components of obstructive sleep apnea (OSA) and can be affected by different craniofacial patterns. The purpose of this retrospective, cross-sectional pilot study is to correlate gender, Body Mass Index, risk for OSA, neck circumference, and 3-D oropharyngeal airway dimensions in children and adolescents with different antero-posterior (AP) and vertical craniofacial skeletal patterns. A total of 86 pre-orthodontic …

Impacts Of Climate Changes On The Spatiotemporal Distribution Of Precipitation In The Western United States, Peng Jiang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Precipitation in the Intermountain West is characterized by its great variability in both spatial and temporal distributions. Moreover, the spatiotemporal distribution of the precipitation is changing due to the climate changes. In this dissertation, three studies are conducted to investigate the multi-scale temporal variability of precipitation, the performance of current climate models on this variability, the influence of large-scale ocean oscillations on heavy precipitation, and the impact of human induced global warming on storm properties.

The first study is to examine the performance of current climate models on the simulation of the multi-scale temporal variability determined from the observed station …

Examining The Inner Experience Of Four Individuals With Bipolar Disorder Using Descriptive Experience Sampling, Johanah Kang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Bipolar disorder is a lifelong mood disorder with diagnostic criteria that provide a description of expected experiences of individuals diagnosed with BD (e.g., elevated mood, sadness, difficulty concentrating). Despite these criteria, the inner experience of these individuals is largely unknown. Understanding the inner experience of individuals diagnosed with BD may prove essential in understanding and treating BD. The present study examined the inner experience of four individuals diagnosed with BD using the Descriptive Experience Sampling (DES) method (Hurlburt 1990, 1993, 2011). Results revealed all our participants had clear and prevalent experiences of sensory awareness. They also had difficulties apprehending and …

Feasibility Of The Use Of Ultrasound Measurements For Grade Verification Of The Performance Grade Asphalt Binders, Mehdi Khalili

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research investigates the feasibility of application of high frequency immersion ultrasonic measurement (UM) to discriminate different performance grade (PG) asphalt binders. PG asphalt binder is one of the main components of hot mix asphalt used for roadway construction. UT may provide an inexpensive alternative to sophisticated tests currently used for quality control of PG asphalt binders. Nine different PG asphalt binders used were selected for this investigation. Velocity (V) and integrated response (IR) of the ultrasonic wave were measured. The IR is a measure of the ratio of ultrasonic energy transmitted into the material to the ultrasonic energy reflected …

Vitamin D Status And Bone Mineral Density In Triathletes, Michelle Konstantarakis

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose: The purposes of this study were first to assess the vitamin D status and bone mineral density (BMD) in male and triathletes (N=15), female triathletes (N=13), and non-athletes (N=14), and to determine if circulating vitamin D was correlated with body composition, BMD, dietary calcium and vitamin D intake in triathletes. The second purpose was to determine if triathletes have a different level of serum vitamin D, body composition, BMD, dietary calcium and vitamin D intake then non-athletes. The third purpose was to determine if BMD was correlated with body composition (body mass, percent body fat, BMI) in triathletes.

Methods: …

A Tale Of Two Pcs: An Evaluation Of Access Platforms For The Blind Utilizing The "Blackboard Learn" Learning Management System, Robert Lambert

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study examined the usability of a learning management system with different access software for people who are blind or have low vision. Due to the versatility of an individual's position within the academic setting, both the student's and the instructor's roles within this environment were examined. Also, due to the versatility of accessible options to the user, multiple access environments were used in the study as well. The intended outcome was to determine what the usability is with various screen access solutions for users who are blind. The current landscape was explored, along with literature from other sources. The …

Effects Of A Social Story Intervention With A Modified Perspective Sentence On Preschool-Age Children With Autism, Delilah Krasch

UNLV Theses, Dissertations, Professional Papers, and Capstones

Young children with autism often experience delays in social skills and social competence. These delays result in poor relationships and decreased social interactions and engagement, and eventually, social isolation and withdrawal. Social skills deficits are also correlated to behavioral and emotional difficulties. Addressing these delays is critical to minimize not only delayed social development, but also detrimental effects on academic learning and performance. Ensuring young children are proficient in a variety of prosocial skills is critical for favorable long-term outcomes and school success.

The purpose of this study was to use a multiple baseline design to determine whether a Social …

The Effects Of Self-Explanation And Reading Questions And Answers On Learning Computer Programming Language, Nancy Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

The current study explored the differential effects of two learning strategies, self-explanation and reading questions and answers, on students' test performance in the computer programming language JavaScript. Students' perceptions toward the two strategies as to their effectiveness in learning JavaScript was also explored by examining students' preferred strategy and the reasons for their choice. An online interactive tutorial instruction that implemented worked-examples and multimedia learning principles was developed for this study. A total of 147 high school students (ages ranging from 14 to 17) who were taking a Computer Introduction course participated in this study. The course was offered in …

Evaluation Of Alternative Project Delivery Methods In Water And Wastewater Projects, Ruiko Maharjan

UNLV Theses, Dissertations, Professional Papers, and Capstones

The United States (U.S.) is facing significant challenges in addressing aging water infrastructure. Most of the drinking water infrastructure is reaching the end of their useful lives. The American Water Works Association (AWWA) estimated that it will cost about $1 trillion to repair or replace drinking water pipes. Over the next 20 years, it will cost about $298 billion to fix or expand pipes of the nation's wastewater and storm-water systems (AWWA, 2012). Owners, engineers, and contractors are using Alternative Project Delivery (APD) methods - e.g., Design-Build Construction Management-at-Risk Construction Management/General Contractor- to build water and wastewater projects in order …

Effects Of Pecs Phase Iii Application Training On Independent Mands In Young Children With Autism, Jessica June Love

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to examine the effects of PECS phase III application training on independent mands in young children with autism. Participants were five children with autism ranging from ages 2 to 4 years old. A multiple baseline across participants was used to evaluate acquisition of independent correct mands across baseline and treatment conditions during training with the PECS Phase III iPadTMapplication.

Data for Participant Four did not demonstrate experimental control directly, as he showed high levels of mands during baseline. The functional relationship for Participant One was questionable as she too likely learned to mand by …

Nonlinear Adaptive Diffusion Models For Image Denoising, Ajay Kumar Mandava

UNLV Theses, Dissertations, Professional Papers, and Capstones

Most of digital image applications demand on high image quality. Unfortunately, images often are degraded by noise during the formation, transmission, and recording processes. Hence, image denoising is an essential processing step preceding visual and automated analyses. Image denoising methods can reduce image contrast, create block or ring artifacts in the process of denoising. In this dissertation, we develop high performance non-linear diffusion based image denoising methods, capable to preserve edges and maintain high visual quality. This is attained by different approaches: First, a nonlinear diffusion is presented with robust M-estimators as diffusivity functions. Secondly, the knowledge of textons derived …