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2001

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Diagnostic Test And Analytical Methods For Resolving Fan/Motor Vibration Problems In Air-Conditioning Units, Qin Liu Jan 2001

Diagnostic Test And Analytical Methods For Resolving Fan/Motor Vibration Problems In Air-Conditioning Units, Qin Liu

UNLV Retrospective Theses & Dissertations

The objective of this thesis is to develop test and analysis procedures to revise ASHRAE Standard 87.1 Standard for small (<36 in. diameter) propeller fans. Test and analysis procedures also need to be used to convert AHRAE Standard 87.1 - 1992 test results where the fan hub mobility is zero to corresponding results that will exist with a finite (nonzero) hub mobility; In this project, the vibration modes of a fan with three cambered blades were investigated. Experimental and Finite Element Analysis (FEA) was performed on the fan blade and the fan-motor unit. The project compared the results obtained from the FEA and experimental modal analysis of the fan assembly. A very good correlation between FEA and the experimental modal analysis was found.

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Effects Of Ocr Errors On Text Categorization, Lidija K Mackovski Jan 2001

Effects Of Ocr Errors On Text Categorization, Lidija K Mackovski

UNLV Retrospective Theses & Dissertations

In this thesis; we report on our experiments on training and categorization of optically recognized documents. In, particular, we present a lexicon-based error correction algorithm to improve the categorization process. This algorithm is based on edit distance techniques and information from highly weighted words in the categorizers.

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Perceptions Of Caring Behaviors By Elderly Residents In Extended Care Facilities, Ludy Sta Maria-Llasus Jan 2001

Perceptions Of Caring Behaviors By Elderly Residents In Extended Care Facilities, Ludy Sta Maria-Llasus

UNLV Retrospective Theses & Dissertations

The purpose of this descriptive study was to describe elderly residents' perceptions of which caring behaviors they want exhibited by the nursing staff in extended care facilities. Consequently, this study was able to identify which caring behaviors are important and least important to this population. Using Jean Watson's Theory of Transpersonal Caring as the framework, this study utilized Wolf's Caring Behaviors Inventory instrument to answer the study's research questions. Forty-eight participants wanted nursing staff to demonstrate behaviors under the professional knowledge and skill dimension of the CBI. The sample also identified five most important and least important nurse caring behaviors; …

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Parental Perceptions Of Childhood Weight Status In Preschool Children, Alison Faye Martodam Jan 2001

Parental Perceptions Of Childhood Weight Status In Preschool Children, Alison Faye Martodam

UNLV Retrospective Theses & Dissertations

The purpose of this descriptive study was to describe parental perceptions of their preschool child's weight status. Pender's Revised Health Promotion Model was used to guide this study. A convenience sample of 275 parents, who had a child between the age of 2--5 years, was obtained from Women, Infant's and Children (WIC) clinics in a Southwestern city, after informed consent was obtained. The sample had a high number of Hispanics (80%) compared to non-Hispanics (20%). It was found that overall parents perceive their child's weight accurately. No significance was found between the ethnicity, education or age of the parents and …

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An Examination Of Mentoring Among Graduate Teaching Assistants, Kimberly Kay Nehls Jan 2001

An Examination Of Mentoring Among Graduate Teaching Assistants, Kimberly Kay Nehls

UNLV Retrospective Theses & Dissertations

Mentoring is a communication process where an experienced guide helps a novice adjust to new surroundings. The goal is to assist newcomers with difficult transitions. The literature review determined that mentoring has recently evolved to academia with a desire to aid students and faculty. A need arose to examine peer communication between graduate students. This study specifically examined peer mentoring among graduate teaching assistants (GTAs) at the University of Nevada, Las Vegas. Surveys were distributed to GTAs in every department and school at that university. Results indicated that GTAs believe the teaching experience has been good for them, but responded …

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Electrochemical Techniques For Detection Of Tnt And Other Explosives Using Disposable Screen-Printed Carbon Electrodes, Rebecca Ann Pearson Jan 2001

Electrochemical Techniques For Detection Of Tnt And Other Explosives Using Disposable Screen-Printed Carbon Electrodes, Rebecca Ann Pearson

UNLV Retrospective Theses & Dissertations

Nitroaromatic and nitramine explosives have been found in the soil and water from many government military bases due to improper storage, weapons testing and production. Run-off from contaminated soil and water can enter underground water and potentially contaminate drinking water for near-by communities. With the closing of military bases throughout the U.S. and Europe, contamination will need to be assessed and remediated before the land and water can be used again for other purposes. The use of a fast and inexpensive field screening technique can save time and money typically incurred during intensive laboratory analysis of clean samples; Screen-printed thick …

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An Exploration Of The Inner Experience Of Depression, Carla Nanette Perlotto Jan 2001

An Exploration Of The Inner Experience Of Depression, Carla Nanette Perlotto

UNLV Retrospective Theses & Dissertations

This study explored the inner experience of people with depression using the Descriptive Experience Sampling method. Participants were screened with the SCL-90-R and then selected for the depression group or the control group. Participants were asked to complete the BDI-II and the VAS as pre-test and posttest measures. Participants used the Descriptive Experience Sampling method, which entails random cueing by a beeping device and recording of inner experiences including thoughts, images, and feelings. Samples were discussed thoroughly by the participants and the researchers. Summaries of the samples were then coded for prominent characteristics. The most frequent codes for the depression …

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The Effects Of Static Stretching Sets In Warm-Up On Maximum Vertical Jump Performance, David R Pestana Jan 2001

The Effects Of Static Stretching Sets In Warm-Up On Maximum Vertical Jump Performance, David R Pestana

UNLV Retrospective Theses & Dissertations

The purpose of the study was to determine whether changing the number of static stretching sets during the warm-up changes maximum vertical jump (MVJ) performance. Twenty-five healthy male and female subjects between the ages of 18--40 volunteered to be in the study. The data was statistically treated using a two (pre-test, post-test) by three (NS, 1SS, and 3SS) ANOVA with repeated measures. The dependent variable was MVJ. The independent variables were test and static stretching sets. The analysis revealed that there were no significant differences between pre-test MVJ scores, but a significant difference between post-test scores for all treatments. MVJ …

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Burnt Rock Mound (26ck3601): Late Archaic And Ceramic Period Human Use Of A Northern Mojave Spring Mound, Hal Boyle Rager Jan 2001

Burnt Rock Mound (26ck3601): Late Archaic And Ceramic Period Human Use Of A Northern Mojave Spring Mound, Hal Boyle Rager

UNLV Retrospective Theses & Dissertations

Archaeological excavations and geological trenching at Burnt Rock Spring Mound, 26CK3601, in the northern Mojave Desert has revealed a complex relationship between paleohydrogeology and the prehistoric human use of the site. Multiple formation, accumulation, and deflation episodes since the Late Pleistocene and Holocene correlate with regional climatic models. The mound is located on the northwest periphery of the known extent of Ancestral Puebloan and Patayan peoples. Artifacts, especially micro-debitage, recovered from Late Holocene mound deposits suggest long-term use of this vital resource by Late Archaic and Ceramic peoples.

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Evaluation Of Geophysical Methods To Characterize Alluvial Soils In The Arid Environment, Bjorn E Sundquist Jan 2001

Evaluation Of Geophysical Methods To Characterize Alluvial Soils In The Arid Environment, Bjorn E Sundquist

UNLV Retrospective Theses & Dissertations

Non-intrusive geophysical investigations, both seismic and electrical, were performed at several locations on the Las Vegas Springs Preserve in Las Vegas, Nevada, along with intrusive drilling. These investigations were conducted to determine whether it is possible use geophysical methods to detect piping-induced cavities and shallow inclusions such as calcific nodules and horizons known as caliche in dry, desert soil, while at the same time characterizing the mechanical structure of the soil and distribution of soil moisture for engineering purposes. The geophysical methods used were the Spectral-Analysis-of-Surface-Waves (SASW) method, surface-based seismic cavity detection, multi-electrode electrical resistivity, and electromagnetic conductivity. The results …

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Teens Understanding Of The Indicators Of The Tendency To Abuse Alcohol: Focus Group Discussions, Bob Van Drimmelen Jan 2001

Teens Understanding Of The Indicators Of The Tendency To Abuse Alcohol: Focus Group Discussions, Bob Van Drimmelen

UNLV Retrospective Theses & Dissertations

Alcohol abuse has become an epidemic in the modern world. The increase in this social problem has brought with it many consequences which everyone in society has to deal with. Unfortunately, the anguish of abuse has also spread through the world of teens. Are there indicators which portend the tendency for teens to abuse alcohol? Quantified research has revealed several of those indicators. Are we helping teens understand what those indicators are? Are teens accepting and learning about those indicators that they might be protected from the harsh consequences? This study begins to help society understand that efforts are being …

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An Investigation On The Impact Of Training On Employees' Perceptions Of Occupational Status And Self-Esteem In The Foodservice Industry, Keithen Adell Washington Jan 2001

An Investigation On The Impact Of Training On Employees' Perceptions Of Occupational Status And Self-Esteem In The Foodservice Industry, Keithen Adell Washington

UNLV Retrospective Theses & Dissertations

As the hospitality community continues to grow into a leading national economical force, it is imperative that the industry investigates perceptions of occupational status and find methods that positively change the negative perceptions of one of its most prevalent divisions, foodservice (Aarnio, 1999). Evaluating perceptions of internal occupational status has been an undeveloped link in this area of research. In order to address internal occupational status, this study looks at the impact of initial foodservice training on the perceptions of newcomers to the career field moderated by specific demographic variables. Examining how training changes perceptions of occupational status and self-esteem …

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The Effects Of Motor Practice On Coarticulatory Interactions In The Speech Of Children And Adults, Kimberly Marie Wieberg Jan 2001

The Effects Of Motor Practice On Coarticulatory Interactions In The Speech Of Children And Adults, Kimberly Marie Wieberg

UNLV Retrospective Theses & Dissertations

The current study was designed to elucidate the role of practice on speech production. Specifically, this investigation examined the effects of a distributed practice schedule on speech productions in young children and adults. Unlike the practice period used in previous studies, the practice session utilized in this investigation was spread out over one week (distributed over time), in which participants were required to practice on three different occasions before being retested. Therefore, the purpose of this investigation is to examine the notion of a developmental trend of coarticulation in children by verifying whether or not speech production strategies as exhibited …

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Three Pioneering Women In Nicaraguan Theater: Dona Gladys Ramirez De Espinoza, Socorro Bonilla Castellon, And Lucero Millan, Maria-Tania Bandes-Becerra Jan 2001

Three Pioneering Women In Nicaraguan Theater: Dona Gladys Ramirez De Espinoza, Socorro Bonilla Castellon, And Lucero Millan, Maria-Tania Bandes-Becerra

UNLV Retrospective Theses & Dissertations

If it is true that theater reflects the human condition, then it can be said that for three decades Nicaragua has been struggling with its own humanity. Some would argue this has been the case since the Somoza dynasty in Nicaragua which ended in 1979. As the Theater of Nicaragua is interwoven in its politics, this paper will bring the reader a closer view of that reality. In an analysis of the history of the theater of Nicaragua, three women have stood out. These three women---Dona Gladys Ramirez de Espinoza, Socorro Bonilla Castellon, and Lucero Millan, have made the theater …

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The Myth Of National Unity: President George W Bush's Rhetorical Reconstruction Of America, William Edward Belk Jan 2001

The Myth Of National Unity: President George W Bush's Rhetorical Reconstruction Of America, William Edward Belk

UNLV Retrospective Theses & Dissertations

On Inaugural Day, President George W. Bush faced an unusually hostile audience. To reunite the nation, President Bush reached back to Americans' fundamental archetypal images, featuring the American founding myth. However, this reunification process was not complete until his speeches of September 14 and 20, 2001. Through his rhetorical transformation of worldwide terrorism into Evil, Bush reconstructed a broadly accepted image of America as Good and concurrently legitimated his ascendancy to the Presidency. However, myth also serves a less benign purpose of subtly promoting narrower ideology disguised as cultural tradition. Through analysis of Bush's three major speeches of 2001, this …

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Factors Affecting Recidivism At A Transitional Shelter For The Homeless, Scianna Elizabeth Bowman Augustine Jan 2001

Factors Affecting Recidivism At A Transitional Shelter For The Homeless, Scianna Elizabeth Bowman Augustine

UNLV Retrospective Theses & Dissertations

This thesis examines factors affecting recidivism (shelter reentry) among two-parent households, female-headed households, and single women, through a study of selected households utilizing a transitional shelter for the homeless in Las Vegas, Nevada. The paper touches on the history of homelessness in America, and explores some of the factors related to the increase in homelessness on the national and local level. It examines the shelter system---in particular, the provision of transitional shelter---as the primary intervention designed to return individuals and families to self-sufficiency. The study found that the three household types did not differ significantly in terms of recidivism. However, …

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An Evaluation Between Confidence Judgments And Differences In Monitoring Ability, Brett Douglas Campbell Jan 2001

An Evaluation Between Confidence Judgments And Differences In Monitoring Ability, Brett Douglas Campbell

UNLV Retrospective Theses & Dissertations

Metacognition is the awareness of a person's thinking and the ability to regulate that thinKing This study examines how confident a person is at monitoring progress during two cognitive tasks. The fast task was the feeling-of-knowing paradigm, when participants judge how accurately they can retrieve an answer in a recognition task, when they cannot retrieve the answer in free recall. The second task was a paired-associate interference paradigm. Participants were presented with a list of noun-noun pairs twice and then a new list was presented for recall. Participants were placed into three groups (high, medium, low) based on responses to …

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Albanian-American Relations: The Past And The Future, Vladimir Cicani Jan 2001

Albanian-American Relations: The Past And The Future, Vladimir Cicani

UNLV Retrospective Theses & Dissertations

This thesis presents a political and historical analysis of the evolution of American-Albanian relations since their initiation up to the present; The study focuses on the highlights of these relations such as the role of the United States (U.S.) in the preservation of Albania's territorial sovereignty right after the First World War, the decisive support of the United States for the democratization processes in Albania, as well as the dynamics of American-Albanian relations during the North Atlantic Treaty Organization (NATO) intervention in Kosova (Serbian language, Kosovo). This study will analyze the importance and the role of Albania in the present …

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A Descriptive Study Of Positive Body Image Among Female Adolescent Dancers, Amy Bobo Courrier Jan 2001

A Descriptive Study Of Positive Body Image Among Female Adolescent Dancers, Amy Bobo Courrier

UNLV Retrospective Theses & Dissertations

This study examined whether groups of adolescent girls, who society defines as having a positive body image, actually feel positive about their own body image and how they express it culturally. Cheerleaders and dancers were chosen as accessible groups that embodied the ideal body image as defined by popular Western teen culture. Qualitative analysis was conducted using interviews, observations, and focus groups to determine how these groups felt about their body image and how they defined a positive image. The influence of attitudes towards perfectionism, perceived control over the body, and the desire to follow "healthy" habits all contributed to …

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Family Factors Associated With Anxiety Sensitivity In Youth, Kelly Lynn Drake Jan 2001

Family Factors Associated With Anxiety Sensitivity In Youth, Kelly Lynn Drake

UNLV Retrospective Theses & Dissertations

The purpose of this study was to examine the relationship between various family variables and anxiety sensitivity (AS) in a community sample of 159 youth ages 7--18 years and their parents. Youth completed self-report measures of anxiety and AS and parents completed measures of AS, attachment, psychopathology, family environment, and parenting practices. The primary purpose was to examine the extent to which these family variables predicted child AS. Results indicated that a combination of family factors including parenting style, parental psychopathology, and family environment significantly predicted child AS. Specifically, parent's perceptions of their child's anxiety sensitivity and a secure attachment …

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Investigating The Relationship Of Verbal Span And Spatial Span In A Combination Task, Miriam E Dunbar Jan 2001

Investigating The Relationship Of Verbal Span And Spatial Span In A Combination Task, Miriam E Dunbar

UNLV Retrospective Theses & Dissertations

Measurement of working memory span typically involves tasks designed to introduce stimuli to the unique slave systems. It is widely accepted that these isolated measurements indicate, at a relatively simple level, the span of the given working memory system. This study hypothesizes that separate working memory systems can be combined to enhance span length. To evaluate this hypothesis, the Corsi Block Task, a commonly used measure of spatial working memory, will be altered to include verbal information (colors). One hundred subjects completed the following typically used cognitive tasks to observe the relationship between verbal abilities in working memory and spatial …

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Transgender Population: Barriers And Adaptions To Employment, Cecilie H Evans Jan 2001

Transgender Population: Barriers And Adaptions To Employment, Cecilie H Evans

UNLV Retrospective Theses & Dissertations

This qualitative study integrated literature and personal interviews to examine issues of employment among people from the transgender population. By incorporating interviews, employment is addressed from the transgender person's reference point. This allows for integral examination of personal or internal and environmental or external factors that impact the transgender person while seeking or maintaining employment. In a study of seven people, common themes appeared to influence employment such as the ability to pass, coming out and transitioning, employer and type of employment, stigmas faced such as being "outed," and attitude. These themes served as the foundation in developing social work …

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Excavation And Interpretation: 42ws126, The Watchman Site, Zion National Park, Utah, Suzanne Beryl Eskenazi Jan 2001

Excavation And Interpretation: 42ws126, The Watchman Site, Zion National Park, Utah, Suzanne Beryl Eskenazi

UNLV Retrospective Theses & Dissertations

Excavations at 42Ws126, a Virgin Anasazi site in Zion National Park, Utah, were conducted for three weeks in the summer of 2000 by archaeologists from the Desert Research Institute in Las Vegas, Nevada, along with high school students and teachers from Nevada and southern Utah as part of a public outreach program. The site consists of aboveground and subsurface storage units and hearth features; no evidence for habitation was encountered. The architecture, ceramic, lithic, and ground stone assemblages indicate small-scale, short-term use of the site. Radiocarbon dates from charred material, the presence of both early and later ceramic types, and …

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Protoporphyrin Ix Distribution In Rat Brain Following The Administration Of 5-Aminolevulinic Acid And Its Hexylester, Scott Alan Friesen Jan 2001

Protoporphyrin Ix Distribution In Rat Brain Following The Administration Of 5-Aminolevulinic Acid And Its Hexylester, Scott Alan Friesen

UNLV Retrospective Theses & Dissertations

Rowett nude rats were injected intra-cranially with varying concentrations of 5-aminolevulinic acid (10, 20, 99, 199, 398 mM) and its hexylester (6.6, 13, 66, 132, 265 mM). Toxicity effects of these compounds were examined based on animal behavior and respiratory distress. It was determined that the maximum tolerable dose for intra-cranial injection is 99 mM 5-Aminolevulinic acid and 66 mM h-ALA; Human glioma spheroids were grown in vitro. After incubation, spheroids were sized (250--350 mum) and injected into the rat brain (10 spheroids per injection). Following the induction and development of glioblastoma multiforme tumors in vivo, Rowett nude rats were …

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Complexity: Theoretical And Methodological Applications For Sociology, Kathryn A Gilpatric Jan 2001

Complexity: Theoretical And Methodological Applications For Sociology, Kathryn A Gilpatric

UNLV Retrospective Theses & Dissertations

This thesis examines the usefulness of Complexity as a new tool for sociology. Complexity, as its own branch of study, developed from the new science of Chaos. Recent paradigmatic disputes occurring in the scientific community have been the force of a growing sense of change in the way many different disciplines view complex systems. Since it is evident that social systems are typically highly complex, it makes sense that a scientific paradigm, which investigates the nature of complex systems, should also be applicable to social systems. Science now argues that the old Newtonian clockwork mentalities and classical experimental models cannot …

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Characterization Of The Pleiotropic Effects Of The Drosophila Gene Mushroom Body Miniature B, Michael Louis Ginsburg Jan 2001

Characterization Of The Pleiotropic Effects Of The Drosophila Gene Mushroom Body Miniature B, Michael Louis Ginsburg

UNLV Retrospective Theses & Dissertations

The mushroom body miniature B ( mbmB) mutation has documented defects in adult mushroom body anatomy, olfactory memory and female fertility. In this thesis I report that mbmB mutants also have reduced viability and growth rate. I further demonstrate, using the mushroom body cell marker dachshund, that loss of mbmB function does not affect the early development of mushroom body neuroectoderm and neuroblasts. Additionally, I found the observed delay in growth and reduced viability were not manifested during embryonic development; Courtship behavior assays and immunohistochemical techniques were used to investigate causes of mbmB female sterility. Courtship involving mbmB females is …

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Weighted Running: Effect On Impact And Oxygen Consumption, Wendy Ann Hibner Jan 2001

Weighted Running: Effect On Impact And Oxygen Consumption, Wendy Ann Hibner

UNLV Retrospective Theses & Dissertations

The purpose of this study was to investigate if runners adjust running style based on impact magnitude instead of running economy while wearing 30% added trunk weight. Runners ran overground at a self-selected pace with and without 30% added trunk weight. Impact magnitudes and other force parameters were analyzed. Runners also ran on a treadmill with 30% added trunk weight at their preferred stride frequency (PSF) and at +/-10% PSF. Oxygen consumption (VO2) and PSF were recorded. VO2 and PSF were greater during nonweighted compared to weighted running (p < 0.05). During weighted running, VO2 was greater when running at the -10% PSF than the PSF, but not different than the +10% PSF. The slightly greater stride frequency during weighted running compared to nonweighted running may be a strategy to keep F1 magnitudes constant concurrent with maintaining and economical gait pattern. It was concluded that individuals optimized on VO2 and impact concurrently.

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Attorneys' Perceptions Of Child Witnesses With Mental Retardation, Michelle Dawn Platt Jan 2001

Attorneys' Perceptions Of Child Witnesses With Mental Retardation, Michelle Dawn Platt

UNLV Retrospective Theses & Dissertations

Children with mental retardation are more likely to be abused than the general population, yet are often denied access to the justice system. Research on children without mental retardation has revealed skepticism as to their reliability as witnesses in the court of law. Even more so, children with mental retardation face the issue of credibility because of their age and disability. The purpose of this study is to assess attorneys' perceptions of child witnesses with mental retardation. Thirty-nine criminal attorneys completed a 33-item questionnaire designed to assess their opinions of the abilities of adults, and children with and without mental …

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Controlling Of Devices Through The Internet, Ravindra Thamma Jan 2001

Controlling Of Devices Through The Internet, Ravindra Thamma

Theses and Dissertations

No abstract provided.

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The Perception Of Manufacturing Companies In North Dakota Regarding Competencies Required For Production/Operations Managers, Lynn Mcchesney Jan 2001

The Perception Of Manufacturing Companies In North Dakota Regarding Competencies Required For Production/Operations Managers, Lynn Mcchesney

Theses and Dissertations

No abstract provided.

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