Digital Commons Network^™

A Christian Mega Church Strives For Relevance: Examining Social Media And Religiosity, Kenthea Albert-Leigh Joan Fogenay

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study is to evaluate the relationship between Facebook and Twitter uses and gratifications and religiosity. Non-denominational Christian mega churches focus their outreach programs on a "come-as-you-are" attitude with the hopes of making people feel comfortable. The interactive technology in our daily lives also infiltrates our experience at church. The congregation now has the ability to worship through technologies endorsed by leadership (Watson & Scalen, 2008; Bogomilova, 2004; Thomas, 2009). In order for churches to engage in effective communication, they must understand how people use social networking. Through survey methodology, the researcher takes an account of how …

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 …

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 …

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 …

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. …

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 …

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 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 …

Kindergarteners' Concept Development In Science And Literacy Learning Through Concept-Oriented Reading Instruction (Cori), Char Adelia Moffit

UNLV Theses, Dissertations, Professional Papers, and Capstones

The notion that "real work" is somehow different from authentic and engaging discovery is troublesome. (Passman, 2001, p.196)

This qualitative case study examined science concept and literacy learning along with engagement of the students in a Kindergarten class in which science and literacy instruction was integrated through Concept-Oriented Reading Instruction (CORI). CORI is an instructional framework created to increase reading engagement by teaching reading comprehension strategies along with science concepts (Guthrie, et al., 1996). This study explored CORI at the Kindergarten level to examine how this curriculum framework engaged young learners in science concept and literacy learning. The study was …

A Case Study Of Zero Energy Home Built For Solar Decathlon Competition 2013, Sanjib Mulepati

UNLV Theses, Dissertations, Professional Papers, and Capstones

Energy consumption in residential homes has been a subject of research related to sustainability. Reduction in the consumption of energy is a goal of sustainable construction. The Department of Energy (DOE) started a Solar Decathlon competition in 2002 in which the students from different universities around the globe build an energy efficient and affordable home suitable for their climate and location. The main goal of this competition is to select the best home that is designed and built in a sustainable way. In this study, the home designed and constructed for participation in the competition by the students at University …

Estimation Of Travel Time Based On Vehicle-Tracking Models, Anuj Nayyar

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this thesis we study the travel time problem based on the known traffic density model. Using the conservation law, we model the travel time function by a boundary value problem of a non homogeneous linear hyperbolic equation. The equation is transformed into an initial value hyperbolic equation, and the well-posedness of the problem is discussed. The mathematical analysis for both density and travel problems are given. We also derive the analytic solutions for several special cases of traffic density. Numerical schemes are proposed for solving for travel time problem. Several numerical examples are presented and error analysis on the …

The Water Wall: A Passive Solar Collection And Thermal Storage Device For Supplementary Radiant Heating, Rhett Roman Noseck

UNLV Theses, Dissertations, Professional Papers, and Capstones

Through the implementation of passive solar building systems, suburbia could take a fresh new step forward toward a progressively more sustainable direction. Making passive solar strategies a priority, master planned community developments would see opportunity to change the style and design of future suburban residences.

The focus and intention of this body of work is to research, design, fabricate, and test a prototype of a passive solar heating device using water as the medium for thermal storage. The size and shape of the design for the water wall device will be determined by the currently built suburban environment; however, for …

Factors Associated With Parental Decision Making And Childhood Vaccination, Zuwen Qiu-Shultz

UNLV Theses, Dissertations, Professional Papers, and Capstones

In order to better understand factors affecting immunization status, logistic regression was used to assess the association of various socio-demographic factors and whether parents would have their child immunized if not a state mandate. Factors included in the study were race, household income, number of children in the household, number of adults in the household, if the child had a primary provider, if the child had a health check-up in the last twelve months, and medical insurance status of the child. The combined Nevada Kindergarten Health Survey Result of 2009-2010 (Year Two) and 2010-2011 (Year Three) conducted by the Nevada …

Maps On The Backs Of Our Eyes, Joan Paulette Robinson

UNLV Theses, Dissertations, Professional Papers, and Capstones

A collection of poems related to places in the Mojave Desert and the Las Vegas area or in rural central Michigan. Most poems deal with history and memory and the overlapping nature of experience.

Perceptions And Definition Of Infidelity: A Multimethod Study, Sarah Schonian

UNLV Theses, Dissertations, Professional Papers, and Capstones

Most couples in committed relationships have implicit or explicit rules regarding infidelity. However, not all partners view infidelity in the same way, and the discrepancy in opinions can lead to problems in the relationship and can complicate the healing process. The purpose of this study was to better understand how people define infidelity and the variables that influence perceptions about infidelity. A mutlimethod design was used to collect quantitative and qualitative data on participants' perceptions and definitions of infidelity. Quantitative data was collected through participants' answers to questions on a scale about perceptions of potentially unfaithful behaviors that was developed …

Field Testing The Upright Versus The Aero Cycling Position, Curtis Scrugham

UNLV Theses, Dissertations, Professional Papers, and Capstones

Body position can be of great importance to athletes who want to maximize their performance on the bike. Aerodynamic resistance can account for 70-90% of resistance encountered by cyclists, and a strategy used to reduce this resistance is riding in the aero position Research has been done in the lab to determine if there are trade-offs to using this position (Jobson et al. 2008, Welbergen and Clijsen 1990, Hubenig, Game and Kennedy 2011, Peveler 2004, Origenes et al. 1993, Ryschon and Stray-Gunderson 1991, Gnehm et al. 1997, Ashe et al. 2003). . Researchers have reported that riders untrained in the …

Performance Comparison Of Design-Build And Construction Manager/General Contractor Highway Projects, Binita Shakya

UNLV Theses, Dissertations, Professional Papers, and Capstones

Researchers have conducted numerous studies comparing project performance of design-bid-build (DBB) and design-build (DB) highway projects. However, little research has been done to compare the performance of DB and construction manager/general contractor (CM/GC) highway projects. Therefore, an exploratory study was conducted to compare the performance of 55 DB and 34 CM/GC highway projects from various States Departments of Transportation (DOTs) in terms of cost, change orders, and construction intensity. The results showed that contract award cost growth was significantly lower in DB projects than in CM/GC projects. In contrast to this, the total cost growth of DB projects was higher …

A Comparative Study Of Performance, Impediments, Advantages, And Disadvantages Of Construction And Professional Disadvantaged Business Enterprises, Ravi Sharma

UNLV Theses, Dissertations, Professional Papers, and Capstones

Construction and professional disadvantaged, minority, and women business enterprises (DBE/MBE/WBEs) face several impediments that hinder their business growth. A questionnaire survey was conducted to determine the important factors that affect their business performance, impediments faced by these business enterprises, advantages, and disadvantages of being DBE (DBE will be an umbrella designation for DBE, MBE, and WBE). This study compares the difference in responses from these two groups. A total of 333 business enterprises responded to the questionnaire. The survey results showed that construction firms gave significantly higher importance to "financial" issues and "safe work practices" as their most important factors …

Sex Determination Using Discriminant Function Analysis In Hispanic Children And Adolescents: A Lateral Cephalometric Study, Alyssa E. Sprowl

UNLV Theses, Dissertations, Professional Papers, and Capstones

Lateral cephalometric radiographs have been used for years to help diagnose skeletal and dental patterns in Orthodontics. Within the last decade, these radiographs have caught the interest of the department of Anthropology for the identification of gender within the adult and adolescent population. Numerous publications have been made but failed to identify sexual dimorphism in the pre-adolescent population. 303 lateral cephalograms of pre and post Latino adolescence age ranging from 6.5 to 17.9 years old were obtained from University of Nevada, Las Vegas (UNLV) digital database. 25 variables were identified and plotted with all linear and angular measurements transferred into …

A Survey On Detection And Defense Of Application Layer Ddos Attacks, Naga Shalini Vadlamani

UNLV Theses, Dissertations, Professional Papers, and Capstones

As the time is passing on, the effect of DDoS attacks on Internet security is growing tremendously. Within a very little span there is a huge increase in the size and frequency of DDoS attacks. With the new technologies and new techniques, the attackers are finding more sophisticated ways to attack the servers. In this situation, it is necessary to come up with various mechanisms to detect and defend these DDoS attacks and protect the servers from the attackers. Many researches have been carried out to detect the DDoS attack traffic in transport layer, which is more vulnerable to DDoS …

The Role Of Music-Specific Representations When Processing Speech: Using A Musical Illusion To Elucidate Domain-Specific And -General Processes, Christina M. Vanden Bosch Der Nederlanden

UNLV Theses, Dissertations, Professional Papers, and Capstones

When listening to music and language sounds, it is unclear whether adults recruit domain-specific or domain-general mechanisms to make sense of incoming sounds. Unique acoustic characteristics such as a greater reliance on rapid temporal transitions in speech relative to song may introduce misleading interpretations concerning shared and overlapping processes in the brain. By using a stimulus that is both ecologically valid and can be perceived as speech or song depending on context, the contribution of low- and high-level mechanisms may be teased apart. The stimuli employed in all experiments are auditory illusions from speech to song reported by Deutsch et …

The Perceived Level Of Enjoyment In Sports Violence: An Experiment Examining How Sports Commentary, Fanship, And Gender Affect Viewer Emotions, Sarah Vineyard

UNLV Theses, Dissertations, Professional Papers, and Capstones

This investigation examines if the independent variables of sports commentary, fanship, and gender affect the viewer's level of perceived enjoyment while watching sports violence through televised professional football and hockey clips. Previous studies have found that these three variables contribute most to a viewer's level of perceived enjoyment. This study aimed to test to see if that was still true, while taking into account new rules regarding violence by the National Football League and the National Hockey League. This thesis addresses all variables in one study, which something past research has failed to do.

Perhaps the most significant finding from …

Time-Dependent Random Effect Poisson Random Field Model For Polymorphism Within And Between Two Related Species, Shilei Zhou

UNLV Theses, Dissertations, Professional Papers, and Capstones

Molecular evolution is partially driven by mutation, selection, random genetic drift, or combination of the three factors. To quantify the magnitude of these genetic forces, a previously developed time-dependent fixed effect Poisson random field model provides powerful likelihood and Bayesian estimates of mutation rate, selection coefficient, and species divergence time. The assumption of the fixed effect model that selection intensity is constant within a genetic locus but varies across genes is obviously biologically unrealistic, but it serves the original purpose of making statistical inference about selection and divergence between two related species they are individually at mutation-selection-drift inequilibrium. By relaxing …

Ichnology And Paleoecology Of The Jurassic Aztec Sandstone, Heather Marie Stoller

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this study I describe and interpret tracks and trackways of the Jurassic Aztec Sandstone of southern Nevada and southern California. This study involved mapping of all known tracks and trackways, including foot length, stride length, and trackway width. Photogrammetric data, collected by Bureau of Land Management scientists, were utilized for several trackways in Red Rock Canyon National Conservation Area.

More than three hundred tracks belonging to five ichnotaxa were documented within the Aztec Sandstone, including about 165 tridactylGrallator, 250 tetradactyl (four-toed)Brasilichniumtracks, and 7 arthropod trackways ofOctopodichnusandPaleohelcura. Four of the five ichnotaxa were not previously reported from the Aztec Sandstone. …

Vitamin And Mineral Intake Relative To The Dris In Young Adults, Samantha M. Coogan

UNLV Theses, Dissertations, Professional Papers, and Capstones

INTRODUCTION: In general, most college-aged students live highly, and newly, independent lives. Although campuses offer wide varieties of food choices, most choices do not meet the standards set by the RDA or DRIs, per NHANES 1999-2000.

METHODS: In order to document these eating patterns, 1001 male (n=379) and female (n=622) college-aged students quantified dietary intake for three consecutive days using the food log method. Assessment reports were generated and analyzed in order to determine the percentage of the DRI in both males and females, and groups with a BMI of less than 20 and greater than 30. Tests for correlation …

This Is The Place: Utah's Gaming History And Current Attitude, Jackson Tad Butterfield

UNLV Theses, Dissertations, Professional Papers, and Capstones

Global gambling is what it is. It is global. Gambling has become an economic force to be reckoned with. It has spread to all corners of the globe, from Europe to North America to Asia. There are regions that have widely supported the introduction of gambling into their economy and society but there are also those that have shunned it, despite the clear economic advantages associated with gambling. The AGA estimated that total gambling revenue in the United States for 2012 was approximately $37.74 billion, with commercial casinos contributing approximately $8.6 billion to local communities via taxes (AGA, 2013c). This …