Digital Commons Network^™

Identifying And Reducing Lead Exposure Associated With The Use Of Cultural Practices In Southern Nevada Hispanic Communities, Maria Castillo-Couch

UNLV Theses, Dissertations, Professional Papers, and Capstones

Despite large amounts of national data on lead and childhood lead poisoning, the status of childhood lead exposure in Nevada as a result of the use of cultural practices in the Hispanic population is unknown. The influx of immigrant Hispanic populations to Nevada, their low education level, the high number of them who are living in poverty present an increased risk for children to be exposed to lead through the use of imported consumables, home remedies and alternative medicine (i.e., healers/ sobadores).

A 61-question survey collected data from Hispanics over 18 years of age who have or take care …

Personality, Presence, And The Virtual Self: A Five-Factor Model Approach To Behavioral Analysis Within A Virtual Environment, Michael Patrick Mccreery

UNLV Theses, Dissertations, Professional Papers, and Capstones

For several decades, researchers have explored the existence of the virtual self, or digital embodiment of self found within an avatar. It was surmised that this new component of one’s overall identity not only existed in conjunction with the public and private persona, but was replete with the necessary physical and psychological characteristics that facilitate a broad range of cognitive, cultural, and socio-emotional outcomes found within a virtual environment (e.g., Second Life, World of Warcraft). However, little is known with regard to whether these characteristics do indeed impact behavioral outcomes. For this reason, this study employed an observational assessment method …

Peripheral Soldering Of Flip Chip Joints On Passive Rfid Tags, Md Syful Islam

UNLV Theses, Dissertations, Professional Papers, and Capstones

Flip chip is the main component of a RFID tag. It is used in billions each year in electronic packaging industries because of its small size, high performance and reliability as well as low cost. They are used in microprocessors, cell phones, watches and automobiles. RFID tags are applied to or incorporated into a product, animal, or person for identification and tracking using radio waves. Some tags can be read from several meters away or even beyond the line of sight of the reader. Passive RFID tags are the most common type in use that employ external power source to …

The Effect Of Self-Controlled Practice On Forearm Passing, Motivation, And Affect In Women’S Volleyball Players, Nels Rydberg

UNLV Theses, Dissertations, Professional Papers, and Capstones

Motor learning research has suggested that self-controlled practice (or “autonomy”) leads to more effective learning of motor tasks. Debate continues, however, as to why. Most motor behaviorists maintain the better learning is due to cognitive and information-processing factors. Recently, others have proposed the learning enhancement is due to such psychological factors as motivation and affect. The present study sought to measure motor skill learning, intrinsic motivation, and affect in self-controlled versus externally-controlled (yoked) practice conditions.

Participants, 16 collegiate women’s volleyball student-athletes from two National Collegiate Athletic Association Division I programs, were paired by forearm passing skill level, and one of …

Chaucer’S Reading List: Sir Thopas, Auchinleck, And Middle English Romances In Translation, Ken Eckert

UNLV Theses, Dissertations, Professional Papers, and Capstones

Middle English romance has never attained critical respectability, dismissed as ―"vayn carpynge" in its own age and treated as a junk-food form of medieval literature or kidnapped for political or psychoanalytical readings. Chaucer‘s Tale of Sir Thopas has been explained as an acidly sarcastic satire of the romances‘ supposedly clichéd formulas and poetically unskilled authors. Yet such assumptions require investigation of how Chaucer and his ostensible audience might have viewed romance as a genre. Chaucer‘s likely use of the Auchinleck manuscript forms a convenient basis for examination of the romances listed in Thopas. With the aid of a modern translation, …

Co-Development Of Biological Soil Crusts, Soil-Geomorphology, And Landscape Biogeochemistry In The Mojave Desert, Nevada, U.S.A. – Implications For Ecological Management, Amanda Jean Williams

UNLV Theses, Dissertations, Professional Papers, and Capstones

Biological soil crusts (BSCs) are complex matrices of soil particles, mosses, lichens, and cyanobacteria that prevent erosion and influence water and energy balances, soil fertility, and vascular plant germination. The processes that form BSCs, the factors that control their distribution, and the ecosystem feedbacks that they sustain are poorly understood. This dissertation employed a novel interdisciplinary approach to address those research unknowns through investigations of the micromorphological structure, soil-geomorphic relationships, and biogeochemical feedbacks of BSCs in the Mojave Desert.

A micromorphological study of BSCs resulted in a succession model that illustrates how crust formative processes and structures change through time. …

The Effect Of Low-Cost Incentives On Active Transportation To School Rates Among Elementary School Students, Sheila G.J. Clark

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study assessed the effectiveness of a school-based active transportation to school (ATS) encouragement program for elementary school students. ATS shows promise for increasing physical activity and preventing excessive weight gain in children. ATS rates were assessed through frequency counts at the control school (N=697) and intervention school (N=693). The intervention encouraged ATS through the distribution of low-cost incentives on one weekday each week. It also required helmet use for participation and included a Walking School Bus component. Findings from this study suggest that the intervention effectively increased ATS on both intervention and non-intervention days.

Information Extraction In An Optical Character Recognition Context, Ramon Pereda

UNLV Theses, Dissertations, Professional Papers, and Capstones

In this dissertation, we investigate the effectiveness of information extraction in the presence of Optical Character Recognition (OCR). It is well known that the OCR errors have no effects on general retrieval tasks. This is mainly due to the redundancy of information in textual documents. Our work shows that information extraction task is significantly influenced by OCR errors. Intuitively, this is due to the fact that extraction algorithms rely on a small window of text surrounding the objects to be extracted.

We show that extraction methodologies based on the Hidden Markov Models are not robust enough to deal with extraction …

Agonist And Stabilizer Muscle Activity During A Push Up On Unstable Surfaces, Anthony J. Dyrek

UNLV Theses, Dissertations, Professional Papers, and Capstones

A recent trend among fitness professionals is to have clients perform resistance exercises on unstable equipment. Anecdotally, this is done with the intent that stabilizing and agonist muscles are more active while doing certain exercises on unstable surfaces. However, there are limited data as to whether or not this is the case and no studies have investigated muscle activity while doing the same exercise on surfaces that offer different levels of stability. Therefore, the purpose of this study is to measure electromyography (EMG) during push up exercise performed on unstable surfaces as well as on the ground. Surface EMG was …

The Right To Privacy In Light Of The Patriot Act And Social Contract Theory, Betsey Sue Casman

UNLV Theses, Dissertations, Professional Papers, and Capstones

There is a continual debate between individuals who attempt to measure the individual’s right to privacy against the government’s right to know in order to provide for the security of all citizens.

The questions that beg to be answered are whether the individual’s right to privacy outweighs the government’s duty to provide security; and if security is deemed more important, can there even be a right to privacy. It is critical to our nation’s anti-terrorism effort that our intelligence agencies possess the legal capacity to intercept all forms of communications utilized by terrorists and hostile intelligence agents. Inevitably this will …

Modeling Mortality Rates For Leukemia Between Men And Women In The United States, Blessed Quansah

UNLV Theses, Dissertations, Professional Papers, and Capstones

Leukemia related deaths increased dramatically over the last forty years. Leukemia is a malignant disease or cancer of the bone marrow and blood. It is characterized by the uncontrolled accumulation of blood cells. Leukemia is divided into two categories: myelogenous or lymphocytic, each of which can be acute or chronic. The terms, myelogenous or lymphocytic denote the cell type involved.

In this thesis, the proposed modeling techniques are applied to leukemia deaths data from the Surveillance Epidemiology and End Results (SEER). In particular, annual deaths data from 1969 to 2007 are used in the data analysis, which includes three major …

The Hormonal Correlates Of Stress And Posttraumatic Stress Disorder Symptoms In Female Veterans, Meghan Pierce

UNLV Theses, Dissertations, Professional Papers, and Capstones

With the increase of female veterans serving in the military, a better understanding of posttraumatic stress disorder is needed to provide comprehensive treatment. This study examines salivary cortisol in female veterans with PTSD, female veterans without PTSD, civilian females with PTSD and healthy controls. The Posttraumatic Stress and Beck Depression Inventory-II were used to assess posttraumatic stress and depressive symptoms. Saliva samples were collected at bedtime and awakening, as well as in response to the Trier Social Stress Test. Significant results were not found for diurnal cortisol levels [ F (3, 11)= .979, p < .05] or stress cortisol levels (F (3,12) = 1.140, p >.05). …

An Examination Of The Grieving Processes Of Suicide Survivors, Sarah Van Der Pol

UNLV Theses, Dissertations, Professional Papers, and Capstones

The scope of this research serves to aid in the understanding and counseling of survivors of loved ones who have committed suicide. This study will examine the phenomenon of survivors; specifically, what occurs as survivors move through the experience of grief and loss, as well as their individual grieving processes. The grieving process of those who deal with suicidal deaths of loved ones will be examined. Themes that emerge within the experiences of the participants will be identified and examined. Further, recommendations for the clinical practice of current and future counselors for work with suicide survivors will be suggested. Recommendations …

Effect Of Aquastretch On Range Of Motion At Knee Joint In Total Knee Arthroplasty Patients, Raja Devinder Kochar

UNLV Theses, Dissertations, Professional Papers, and Capstones

The success of the Total Knee Arthroplasty (TKA) depends upon its functional outcomes of increase in reduction in pain, and gait ambulation and performing functional activities of daily living. Compromised range of motion, pain and weakness can reduce their ability to perform activities of daily living. Aquatic Physical Therapy may offer an alternative intervention to traditional Physical Therapy Rehabilitation and many studies have shown improvements in range of motion, swelling, pain reduction, stiffness and quality of life after TKA. AquaStretch, a relatively new form of aquatic therapy, claims to restore the functional mobility which is lost restrictions caused due to …

The Acute Effects Of Various Types Of Stretching (Static, Dynamic, Ballistic, And No Stretch) Of The Iliopsoas On 40-Yard Sprint Times In Non-Athletes, Scott David Christensen, Craig Perry, Ryan Richard Resnik

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to determine the effect of static, ballistic, dynamic, and no stretching immediately prior to a 40-yard sprint in college students. There were 35 healthy subjects (22 male and 13 female) between the ages of 24 and 37 (Mean = 26.46 yrs, SD = 2.99 yrs) who participated. The experiment consisted of running 4, 40-yard sprint trials immediately following 1 of 4 different stretching protocols. Prior to each 40- yard sprint trial, a 5-minute warm up was performed at 3.5 mph on a treadmill. Each subject received each of the four techniques in a randomized …

Patient Factors And Day Of The Week Influencing Physical Therapy Non-Treatment Events In The Acute Care Setting, Daniel Goodrich, Curtis Doug Jensen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background. In acute care hospitals, scheduled physical therapy visits not resulting in treatment may increase patient length of stay and the financial burden to the hospital. Previous literature has not fully evaluated the occurrence of these events, nor have any associated factors been identified.

Objective. Measure the rate of non-treatment and determine which patient characteristics were most likely to predict a non-treatment event.

Design. Retrospective review of documentation at a suburban hospital.

Methods. Data were collected from records of 1,096 patients, totaling 6,097 scheduled sessions. The rate of non-treatment was calculated and logistic regression used to …

Development Of A Scale To Assess Avoidance Behavior Due To A Fear Of Falling: The Fear Of Falling Avoidance Behavior Questionnaire (Ffabq), Cortney Durand, D. Shalom Powell

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: A history of falls or imbalance may lead to a fear of falling which may lead to self-imposed avoidance of activity; this avoidance may stimulate a vicious cycle of deconditioning and subsequent falls.

Objective: The purpose of this study was to develop a questionnaire that would quantify avoidance behavior due to a fear of falling.

Design: This study consisted of two parts, questionnaire development and psychometric testing. Questionnaire development included an expert panel and 39 assisted living residents. Psychometric testing included 63 community dwelling subjects with various health conditions.

Methods: Questionnaire development included the evaluation …

Examining Activity Levels And Motor Proficiency: A Comparison Of Children Who Are Overweight And At A Healthy Weight To Their Parents And Peers, Aaron Copeland, Maresa Madsen, Riley Phelps, Brandon Richards

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objective: The purpose of this study was to examine relationships and differences between motor proficiency, activity level, and parental activity level in children who are at a healthy weight and children who are overweight or obese.

Methods: Forty-four children (26 children at a healthy weight and 18 children who were overweight or obese) between the ages of 8-16 (BMI: 14.3-43.6 kg/m2) and 36 parents (BMI: 18.1-44.7) participated in this study. Children and parents wore StepWatch activity monitors (SAM) to measure activity levels over a 72 hour period. Tests reflecting several determinants of motor performance were also administered to …

Safety Of Cervical Manipulation: Are Adverse Events Preventable And Are Manipulations Being Performed Appropriately?, Joseph Anders, Jessica March, Amber Perez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Objectives: Documented case reports found in medical literature describing adverse events associated with cervical spine manipulation (CSM) were reviewed to determine if the CSM was used appropriately and if the events could have been prevented. Our hypothesis was that CSM had been used inappropriately and that adverse events could have been prevented. This study also looked to identify potential characteristics that may put the patient at risk for injury, or even death as a result of a CSM.

Methods: One hundred and thirty four cases, reported in 93 articles, published between 1950 and 2010, were reviewed. CSMs were categorized as …

Thrust Joint Manipulation Education: Student Perceptions Of Learning And Practical Experiences In Spinal Manipulation Within Entry-Level Physical Therapist Education Programs, Joshua Thomas Marks, Lisa Basl

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: Spinal thrust joint manipulation (TJM) education is mandatory in all professional entry-level physical therapy programs, yet TJM is under-utilized in daily practice. This descriptive study expands on previous data about how TJM is taught and includes data for the perceived confidence students have when performing TJM.

Methods: A 39-question descriptive survey inquiring about TJM education and selfperceived confidence in performing TJM was distributed via email to 213 accredited physical therapy programs.

Subjects: Respondents ranged in age from 22-45 (mean age=25.61 years). Respondents included 435 professional physical therapy students (84 male, 285 female) who have completed their …

The Acute Effects Of Static Stretching Of The Gastrocnemius On Limits Of Stability In Young Adults Versus Elderly Adults, Matt Bugnet, Kirk Player

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background and Purpose: Balance is an important part of everyday life for all individuals with many body systems interacting to achieve optimal balance. Proprioceptive organs aid in this interaction, while also acting as stretch receptors. Therefore, it is possible that stretching may influence the overall balance of the individual. The purpose of this study was to investigate the acute effects of stretching on dynamic balance of healthy young and elderly adults. The two groups were used to determine if stretching may discriminately affect balance at different ages.

Subjects: Thirty healthy adults between the ages of 18 and 35 …

Effects Of Environment On Children's Motor Scores, Eligibility Status, And Administration Times, Derrick Mittelstadt, Abigail Parker, Kirsten Pickett, Heather Temkin

UNLV Theses, Dissertations, Professional Papers, and Capstones

Best practices for assessing developmental skills in young children focus on naturalistic observation in everyday settings, but the effects of environment on test scores, eligibility status and administration time have not been explored. The Peabody Developmental Motor Scales-Second Edition (PDMS-2) was administered to 34 children aged 18 to 59 months in natural and pull-out settings. PDMS-2 total, gross, and fine motor quotient (TMQ, GMQ, and FMQ) scores were significantly lower in the natural environment (p’s≤.014). Based on our results, more children would qualify for services when tested in natural environments using TMQ and GMQ scores. It also took significantly longer …

Executive Function Profiles In Pediatric Traumatic Brain Injury, Erik Nelson Ringdahl

UNLV Theses, Dissertations, Professional Papers, and Capstones

Traumatic brain injury is a common cause of disability and death among children in the United States. Insult to the frontal and temporal lobes are frequent in closed head brain injury. Cognitive deficits in a variety of domains are common sequelae of brain trauma. In many cases, trauma to the frontal and temporal lobe regions engender prominent deficits in higher-order cognitive processing, memory, and attention.

Higher-order cognitive processing, or Executive Functions are the grouping of cognitive processes necessary for organization of thoughts and activities, attending to the activities, prioritizing tasks, managing time efficiently, and making decisions (Alvarez & Emory, 2006; …

The Relationship Between Participation In Extracurricular Activities And Utah's Proficiency Assessments Of Students In A Suburban School District, Everett N. Kelepolo

UNLV Theses, Dissertations, Professional Papers, and Capstones

The purpose of this study was to discover whether a relationship exists between participation in extracurricular activities and meeting Utah proficiency assessment standards. This study took place in a suburban school district in the state of Utah.

Throughout the history of public education, economic hardships have wreaked havoc on school systems that depend on public sources of income. Schools today are managing these budget restraints by reducing or eliminating extracurricular programs.

The relationship between academic success and participating in extracurricular activities is found concretely in the research data. However, schools must make budget decisions which place activities and academics in …

It's A Matter Of Principal: Examining Relationships Between Leaders' Change Facilitator Style And Students' Academic Progress, Diane Lewis

UNLV Theses, Dissertations, Professional Papers, and Capstones

At no other time in the history of American education have school principals been faced with as many challenges as today. The era of accountability has increased the daily pressures of leading a school, while responsibility for student achievement is at an all time high.

Some studies have examined a leaders’ impact on teacher behaviors. Fewer studies have examined the possible impacts that principals have on student learning. In this study, leadership research was reviewed; not only in education, but in business, sports, and other fields. The traits and styles of leaders were explored in an attempt to define the …

Resilient Leadership In High Poverty Schools, Edward P. San Nicolas

UNLV Theses, Dissertations, Professional Papers, and Capstones

Children in high poverty schools often receive inadequate services in dilapidated facilities while enduring inexperienced and unprepared educators (Darling-Hammond, 2004). Communities with a dense impoverished population in turn create school wide poverty, which is ultimately more detrimental than individual family poverty (Books, 2004). With most teachers leaving impoverished urban schools within the first five years, it is no surprise of the difficulty to retain qualified and professional school leaders. As suggested by Haberman (2005), attracting educators with specific qualities to fill these critical roles may be the best route to lasting success. Equally important is the possibility to transform existing …

Help Of Southern Nevada Analysis Project, Lauren Cella, Carly Dunlap, Jonathon Nunes, Anna Vaillancourt

UNLV Theses, Dissertations, Professional Papers, and Capstones

HELP of Southern Nevada (HELP), a not-for-profit agency, would like to expand their current services by operating a thrift store. It is anticipated that this thrift store would bring in additional revenue and also benefit their current programs. In direct conversations with the Chief Operating Officer of HELP, areas of concern were expressed regarding the implementation process of the thrift store. These areas pertained to size and location of their potential facility, staffing issues, and distribution priority of donated goods to their existing programs. Analysis was conducted through on-site interviews with other executives of Southern Nevada not-for profit thrift stores …

Telework Within The Bureau Of Reclamation Lower Colorado Region Office, Theresa Lee, Lynne Arnold, John Wagner, Elias Samorano, Anita Morgan

UNLV Theses, Dissertations, Professional Papers, and Capstones

A team of researchers from The University of Nevada, Las Vegas were invited by management to observe, assess, and offer recommendations. It was determined by the research team that the first step to improving participation would be to observe the functional telework policy, compare and contrast it with the Department of the Interior standards, and offer recommendations to generate data necessary to develop an updated telework policy by management. The recommendations made by this group include creating an employee eligibility list, tracking actual participation by creating a renewal policy for employees choosing to telework. It is also recommended that a …

Public Utilities Commission Of Nevada: A Research Design For Data Collection, Mario Heresi, Jamie Stout, Brandy Davis, Cheyenne Pasquale

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Public Utilities Commission of Nevada (PUCN) needs tools to develop a system by which reliable data can be collected in order to assist in the regulation of public utilities in Nevada. Their particular emphasis is on low-income and elderly populations. The PUCN needs to have reliable data they can utilize to make decisions that are fact based. Part of their needs is to have a thorough understanding of the factors that affect both low-income and elderly populations. Like so many other organizations, the PUCN does not have a set system to investigate all issues and makes decisions on a …

Set In Stone: Legends, Traditions, And Symbols Influencing Place Attachment For Southern Utah University Students, Claudine Nielsen

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study explored the influence of campus legends, traditions, and symbols on the development of place attachment in students at Southern Utah University. An examination of organizational theory, including universities as cultures, student development theory, alumni participation, and place attachment revealed no cross-disciplinary research into how place attachment to a university campus may be influenced by intentional attempts to instill a sense of collective identity through the stories and rituals that occur on campus, hence the need to address this void. Unlike many organizations, colleges have a vested interest in maintaining a connection with students beyond the point of separation. …