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Experimental Study Of Drying Of A Porous Medium At Sub-Residual Saturations, Adaikkalavan Kumar Sathappan Jan 1999

Experimental Study Of Drying Of A Porous Medium At Sub-Residual Saturations, Adaikkalavan Kumar Sathappan

UNLV Retrospective Theses & Dissertations

An experimental study has been conducted to understand the drying effects in sub-residual saturated systems. Different flow rates and isothermal wall temperatures were used in the experiments. In two experimental runs, the test section was maintained at room temperature and gas flow initiated. Four other cases were started initially with heating up the porous medium with no flow, and then letting nitrogen gas flow through the test-section after a steady-state temperature distribution had been reached (denoted in what follows as the "steady heating case"); Temperatures throughout the bed and entering and exiting humidity values as a function of time among …

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Soluble Mineral Content Of Soils Using Electrical Conductivity, Merrill Gene Schweppe Jan 1999

Soluble Mineral Content Of Soils Using Electrical Conductivity, Merrill Gene Schweppe

UNLV Retrospective Theses & Dissertations

Soils with soluble salts occur in semi-arid and arid regions worldwide. The soluble mineral percentage of soil is determined by measuring the weight lost by diluting the soil mass with a fixed quantity of water. Correct estimation of soluble mineral content is made at the point of unsaturation. In the absence of clay, grain size does not affect determination of electrical conductivity for soils. Measurement of the electrical conductivity for a series of dilution ratios provides a reliable means of determining the correct dilution ratio. Measurement of the electrical conductivity of a subset of low water-soil dilution ratios and a …

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The Relationship Of Hamstring And Hip Flexor Flexibility To Injury Rates In Collegiate Football Players, Joseph Slat Jan 1999

The Relationship Of Hamstring And Hip Flexor Flexibility To Injury Rates In Collegiate Football Players, Joseph Slat

UNLV Retrospective Theses & Dissertations

Fifty collegiate football players volunteered to participate in the study to examine the relationship between flexibility and injury rate of muscle strain, specifically the Hamstring and Hip Flexor muscle groups. Participants were evaluated for range of motion and monitored for non-contact hamstring strains occurring throughout the competitive seaSon Participants with any muscle strain within the past year were excluded from this study. Measurement of the hamstrings was done with a passive knee extension test; hip flexors were measured with prone hip extension test. Sixteen hamstring strains occurred within the fifty participants. Correlation statistics were done to show relationship between the …

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A Method For Determining Elements For Elemental Signature Analysis Of Groundwater And Treated Lake Mead Water, F. Xavier Suarez Jan 1999

A Method For Determining Elements For Elemental Signature Analysis Of Groundwater And Treated Lake Mead Water, F. Xavier Suarez

UNLV Retrospective Theses & Dissertations

Elemental signature analysis (ESA) is a term that describes the use of the presence/absence or relative abundance of elements in samples. Several studies have been performed on the identification of these elemental signatures or fingerprints of water using inductively coupled plasma mass spectrometry (ICP-MS); Lake Mead is the primary water supply for the Las Vegas Valley. During the summer months, several large underground aquifers are used to supplement the Lake Mead water supply. Treated Lake Mead water is recharged during the low demand months to several of these aquifers. The Las Vegas Valley is surrounded by many private groundwater wells …

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Summary Fading Knowledge Of Results (Kr): Test For The Dynamic Acquisition Protocols, Changjiang (River) Sun Jan 1999

Summary Fading Knowledge Of Results (Kr): Test For The Dynamic Acquisition Protocols, Changjiang (River) Sun

UNLV Retrospective Theses & Dissertations

The primary purpose of this study was to examine the effects of dynamic acquisition protocols by comparing dynamic and static KR schedules in a single experiment. Five groups of participants (n = 13 per group) completed 90 acquisition trials of a force production task. The analysis of delayed no-KR retention test revealed that the participants in the summary fading KR group performed better than the three static KR groups, indicating that the dynamic acquisition protocols produces more efficient learning than static acquisition protocols. This finding is interpreted as support for Adams' theory (1971) that the most appropriate acquisition protocol would …

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Classification Of Galaxies Using Fractal Dimensions, Sandip G Thanki Jan 1999

Classification Of Galaxies Using Fractal Dimensions, Sandip G Thanki

UNLV Retrospective Theses & Dissertations

The classification of galaxies is morphological. Shapes of the galaxies range from the very simple (e.g. elliptical galaxies) to the highly complex (e.g. irregular galaxies). Analyzing a measure of complexity for such shapes could lead to automatic classification. Fractal dimension, a quantity related to the complexity of a given shape, could be such a measure. Capacity dimension and correlation dimension are two of the several types of fractal dimensions. In this project, correlation dimensions and the capacity dimensions of the contours generated around different intensity levels of the galaxy images, versus the intensity levels were computed. It was found that …

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Impacts Of Stock Prices And Interest Rates On Tourism Consumption, Ming-Chih Tsai Jan 1999

Impacts Of Stock Prices And Interest Rates On Tourism Consumption, Ming-Chih Tsai

UNLV Retrospective Theses & Dissertations

Tourism industry has emerged as a leader in the U.S.'s service economy in the last decade. Meanwhile, stock markets and interest rates have been playing a more important role in Americans everyday lives. Prior research mainly focused on the economic impact of travel and tourism industry, but there are very few studies regarding how changes in economic factors will affect domestic tourism industry. This study focuses on measuring the impacts of stock prices and interest rates on tourism consumption. The results of this study show that stock prices and interest rates do have a certain amount of impacts on people's …

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Control Of Flexible Joint Robotic Manipulator Using Tuning Functions Design, Pavan Krishna Aripirala Venkata Jan 1999

Control Of Flexible Joint Robotic Manipulator Using Tuning Functions Design, Pavan Krishna Aripirala Venkata

UNLV Retrospective Theses & Dissertations

The goal of this thesis is to design the controller for a single arm manipulator having a flexible joint for the tracking problem in two different cases. A controller is designed for a deterministic case wherein the plant parameters are assumed to be known while another is designed for an adaptive case where all the plant parameters are assumed to be unknown. In general the tracking problem is; given a smooth reference trajectory, the end effector has to track the reference while maintaining the stability. It is assumed that only the output of the manipulator, which is the link angle, …

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Business Practice Knowledge Of Advanced Practice Nurses In Nevada, Sandra Jean Wheaton Jan 1999

Business Practice Knowledge Of Advanced Practice Nurses In Nevada, Sandra Jean Wheaton

UNLV Retrospective Theses & Dissertations

Advanced practice nurses (APNs) are entering into employment practice relationships and working in a variety of clinical practice settings without the benefit of adequate preparation in organization management, business and finance. While the evolution of APN clinical expertise is well documented, their knowledge base in organizational management, business and finance is not. This exploratory, descriptive study discovers what business knowledge APNs in Nevada possess and their perception of its adequacy for practice; A 28-item questionnaire was mailed to all APNs registered with the Nevada State Board of Nursing. Eleven items describe the population. The remaining items address the research questions: …

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The Effect Of Dietary Creatine Supplementation On Compensatory Muscle Hypertrophy And Performance Characteristics Of Specific Fiber Types, Robert Earl Young Jan 1999

The Effect Of Dietary Creatine Supplementation On Compensatory Muscle Hypertrophy And Performance Characteristics Of Specific Fiber Types, Robert Earl Young

UNLV Retrospective Theses & Dissertations

An animal model was used to determine the effect of dietary creatine supplementation on compensatory muscular hypertrophy and electrically stimulated performance of those muscles. Thirty-six rats were divided evenly into six groups. Two groups were surgical controls, two groups had the tibialis anterior ablated, to hypertrophy the extensor digitorum longus (EDL), and two groups the gastrocnemius and the plantaris ablated, to hypertrophy the soleus. One of each of these groups had their diet supplemented with creatine monohydrate. The size of the EDL and soleus were measured following surgical removal of the synergistic muscle and a 5-week supplementation period. Peak force, …

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Minority Housing Conditions In Urban Settings: Proposals For The Improvement Of Las Vegas' Amerindian Homes, Patricia Epee Stissi Jan 1999

Minority Housing Conditions In Urban Settings: Proposals For The Improvement Of Las Vegas' Amerindian Homes, Patricia Epee Stissi

UNLV Retrospective Theses & Dissertations

Native Americans living on reservations occupy some of the worst housing in the United States. But, nowadays, both on reservations and in urban settings, a small majority (about 56%) of them use the same types of architectural space as any other Americans. For example, HUD homes on the reservations, apartment complexes and small houses in cities, sometimes Public Housing. This research will explore a way to improve American Indians housing conditions while accentuating the need for sustainable and affordable housing in harmony with the tribal environment, because they bring a unique cultural heritage to urban society; For the purpose of …

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Handling Police Misconduct In An Ethical Way, Daniel Patrick Barry Jan 1999

Handling Police Misconduct In An Ethical Way, Daniel Patrick Barry

UNLV Retrospective Theses & Dissertations

Police misconduct has always been a serious problem in America. Historically, reform efforts have failed due to an organizational culture that is resistant to change. Past reforms have been aimed at individual incidents, disregarding underlying organizational problems. Improving public perception has been the goal of past reforms, as opposed to improving organizational soundness; Reform efforts need to be directed at enhancing police organizational culture. These changes will improve workplace ethos, allowing virtuous conduct to flourish. Advancing this organizational culture will encourage police officers to act in a manner consistent with the high trust we vest in this vocation; Justice, Truthfulness …

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Pro-Social And Anti-Social Effects Of Television Viewing On Adolescents: Speculations Based On Family Situation Comedy Content, Eunette Gentry Jan 1999

Pro-Social And Anti-Social Effects Of Television Viewing On Adolescents: Speculations Based On Family Situation Comedy Content, Eunette Gentry

UNLV Retrospective Theses & Dissertations

Researchers theorize that verbal insults within television family interactions may create images of dysfunctional families that serve as a paradigm for young viewers. This study conducted a content analysis of television programming and speculated about the possible development of antisocial behavior in adolescents due to television viewing; "The Cosby Show" and "Roseanne" were chosen in this research sample because previous research finds that family oriented situation comedies are among children's favorite television programs. Ten episodes of each series were recorded and analyzed for their anti-social verbal content. The brother-sister sibling relationship was analyzed within each episode and coded using eight …

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Elder Care: An Evaluation Of Communication Resources For Lay Caregivers In Southern Nevada, Deborah Lee Hauth Jan 1999

Elder Care: An Evaluation Of Communication Resources For Lay Caregivers In Southern Nevada, Deborah Lee Hauth

UNLV Retrospective Theses & Dissertations

Hidden behind closed doors of nursing homes, hospitals and neighborhood residences, was a segment of the population suffering from dementing illnesses. Although seldom seen, these older Americans presented significant challenges for the family members caring for them. This study focused attention on these lay caregivers and the effectiveness of community resources, from their perspective. With assistance from Southern Nevada Alzheimer's Association staff, a survey was conducted. The results showed agencies rated as "satisfactory" in their efforts to provide information, with the Alzheimer's Association newsletter ranked as the primary source of information for caregivers. While the survey provided insights regarding caregivers …

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Socially Desirable Responding On The Machiavellianism Scale: Response Bias Or Construct?, Maryn Lyn Hoefer Jan 1999

Socially Desirable Responding On The Machiavellianism Scale: Response Bias Or Construct?, Maryn Lyn Hoefer

UNLV Retrospective Theses & Dissertations

The Mach IV scale measures Machiavellianism, the propensity to be manipulatory in interpersonal relations. The Mach IV has been criticized for social desirability response bias, or the tendency to present oneself in an overly favorable light. Socially desirable responding, as measured by the Balanced Inventory of Desirable Responding, however, was postulated to reflect a facet of the Machiavellianism construct. A coalition-bargaining game was played with college students (N = 126), using 21 groups each of sex-segregated triads in a 2 (sex) by 3 (high, medium, and low levels of Machiavellianism) between-subjects design. Game scores served as the dependent variable and …

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Media Convergence, Obscenity Law And The Internet, Lynette Lim Jan 1999

Media Convergence, Obscenity Law And The Internet, Lynette Lim

UNLV Retrospective Theses & Dissertations

Digitization and innovation in technology has resulted in a climate of media convergence. Media convergence occurs when elements of previously distinctly separate media forms co-mingle to create new capabilities. Although there is no such thing as complete convergence as of yet, there is probably the closest thing to a purely converged medium. Any user is able to access a variety of text, hypertext, graphic, audio and video files online. However, it is also because of media convergence that makes the Internet difficult to regulate. Laws that were proposed to provide some form of legal control to the access of online …

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Fall From Grace: United States Images Of Japan, 1894--1921, Darryl Scott Hushaw Jan 1999

Fall From Grace: United States Images Of Japan, 1894--1921, Darryl Scott Hushaw

UNLV Retrospective Theses & Dissertations

This thesis examines the shifting American perceptions of Japan in the period from the Sino-Japanese War to the Washington Naval Conference, as expressed in the popular press, government statements, missionary speeches, and other printed materials. During this period, the American image of Japan changed dramatically, and the image of the Japanese was transformed from an admirable, if exotic, people, to formidable economic, cultural, and strategic rivals. While Theodore Roosevelt pursued a pragmatic East Asian policy based on the interests and capabilities of the nations in question, his successors altered this policy, with the Taft Administration mounting an economic challenge to …

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The Rhetoric Of Martyrdom: A Case Study Analyzing The Rhetorical Situations Of Joan Of Arc, John Brown And Jim Jones, Chris S Meservey Jan 1999

The Rhetoric Of Martyrdom: A Case Study Analyzing The Rhetorical Situations Of Joan Of Arc, John Brown And Jim Jones, Chris S Meservey

UNLV Retrospective Theses & Dissertations

The study provides a critical analysis of the rhetoric used to establish a martyr in history. An indepth definition of martyrdom, along with a criteria for martyrs, is utilized in support of the theories. The text claims that the rhetoric of a situation is the key to becoming a martyr. Utilizing the theory of criteria for martyrdom as the tool, histories, biographies, discourses, and print media provide the input for the analysis; The examination breaks into three case studies: Joan of Arc, John Brown, and Jim Jones The examples of Joan of Arc and John Brown illustrate the positive role …

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Baseball's Manifest Destiny: The Good, The Bad, And The Ugly, Patrick Valenti Miller Jan 1999

Baseball's Manifest Destiny: The Good, The Bad, And The Ugly, Patrick Valenti Miller

UNLV Retrospective Theses & Dissertations

Brooklyn Dodgers fans blame Walter O'Malley for destroying a way of life and tarnishing the golden image of the postwar years when, in 1957, he relocated their beloved baseball team to the West. The relocation finds its impetus in American adherence to nineteenth-century Manifest Destiny and a major demographic shift following a post-World War II economic and technological boom; For the first half of the twentieth century, baseball transcended a mere rooting for a collection of superb athletes; civic identity rested in one's baseball team. Losing a team to another city was devastating. For some cities baseball provided the affirmation …

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Trackless Online Two-Server Problems And Red-Black Games, Anna N Naydenova Jan 1999

Trackless Online Two-Server Problems And Red-Black Games, Anna N Naydenova

UNLV Retrospective Theses & Dissertations

The online 2-server problem presents a number of challenges in the search for simple competitive algorithms for solving it. Finding the optimal off-line solution involves costly dynamic programming. Looking for more efficient algorithms, researchers have studied how restriction on the input information given to the algorithm affects its competitiveness. One such restriction is tracklessness. Trackless algorithms for the 2-server problem include many known server algorithms including BALANCE_SLACK and some paging algorithms. It is demonstrated that the trackless 2-server optimization problem has a deterministic lower bound of 2311>2 for competitiveness, thus proving that tracklessness is a significant restriction. The optimally …

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Gambling Addiction And Life Meaning, Andrew Bohdan Plesh Jan 1999

Gambling Addiction And Life Meaning, Andrew Bohdan Plesh

UNLV Retrospective Theses & Dissertations

Addictive Gambling has plagued mankind for thousands of years. However, it has only recently been studied extensively. One proposed cause for addiction, which has been used in studying alcohol and drug abuse, is a lack of meaning in the addict's life. However, a causal link between life meaning and gambling addiction has not yet been examined. This study used a sample of 355 normal people and compared scores on the South Oaks Gambling Screen (SOGS), the Purpose in Life (PIL) Test, the short form of the Beck Depression Inventory (BDI), and the Michigan Alcoholism Screening Test (MAST). Relationships between the …

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Post-Traumatic Stress Disorder: The Hidden Epidemic And Its Effect On Society, Donald Phelan Stewart Jan 1999

Post-Traumatic Stress Disorder: The Hidden Epidemic And Its Effect On Society, Donald Phelan Stewart

UNLV Retrospective Theses & Dissertations

Post Traumatic Stress Disorder, a debilitating and sometimes disabling mental disorder, is emerging as one that is costly to society from many perspectives. PTSD sufferers commonly experience an inability to function normally within the workplace or within their social and family relationships. The disorder triggers strong emotional responses, changes social interaction and precipitates primary and secondary deviant behavior. This work focuses on non war related civilian incidence of the disorder. It examines the causes, circumstances and processes leading to the onset of the disorder and explores societal reaction to PTSD sufferers. Central to the work are the individual case studies …

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Changing Images: The End Of Legalized Prostitution In Las Vegas, Sarah Hall Washburn Jan 1999

Changing Images: The End Of Legalized Prostitution In Las Vegas, Sarah Hall Washburn

UNLV Retrospective Theses & Dissertations

Legalized prostitution in Las Vegas began with the town's founding in 1905 and lasted until World War II. By researching legalized prostitution in Las Vegas from an economic and social standpoint as opposed to just a moral perspective, a broader picture emerged to show the changes that occurred. These changes were not unique to Las Vegas, but accompanied many other frontier towns of the West. The slow changes that began with some restriction on prostitution from the founding of Las Vegas within Block 16 of the original townsite and evolved to include pressure from the federal government to eliminate prostitution. …

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Historical And Archaeological Investigations At 26pe2137: American Canyon, Pershing County, Nevada, David Wayne Valentine Jan 1999

Historical And Archaeological Investigations At 26pe2137: American Canyon, Pershing County, Nevada, David Wayne Valentine

UNLV Retrospective Theses & Dissertations

Previous archaeological investigations concerning overseas Chinese in the United States have focused on artifact assemblages in an effort to determine the level of acculturation of Chinese into dominant Euroamerican cultures. These studies indicate that Chinese tenaciously clung to traditional diets and other aspects of their culture, but adapted some foreign technologies. What can other aspects of their culture, such as architecture and mining technology, tell us? Do ruins of dwellings and mines show adherence to Chinese tradition?;This thesis looks at architecture and mining technology in a Chinese placer mining site to determine levels of acculturation in these areas. The architectural …

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Detection Of Glial Interleukin-6 Release: Development Of A Novel Interleukin-6 Elisa, Kay-Lynn Bowman Jan 1999

Detection Of Glial Interleukin-6 Release: Development Of A Novel Interleukin-6 Elisa, Kay-Lynn Bowman

UNLV Retrospective Theses & Dissertations

The development of an interleukin-6 (IL-6) enzyme-linked immunosorbent (ELISA) assay resulted in a detection range of 1 ng/m1 to 10 ng/mL IL-6. The limit of detection (LOD) for IL-6 was 0.25 ng/mL. Troubleshooting techniques were attempted including matrix effects, non-specific binding, and coating buffer pH differences. In comparison to the ELISA, the LOD for IL-6 using the 7TD1 bioassay was 2--5 pg/mL. Therefore the 7TD1 bioassay was implemented for the experiments described in this study. IL-6 is a cytokine known to stimulate B-cell differentiation and to activate T-cells. IL-6 is elevated in inflammatory and neurodegenerative diseases. Interleukin-1beta (IL-1beta) stimulates IL-6 …

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Modeling Of Short-Distance Running, Maria Camille Theresa Jose Capiral Jan 1999

Modeling Of Short-Distance Running, Maria Camille Theresa Jose Capiral

UNLV Retrospective Theses & Dissertations

In this thesis, we construct a model of human performance in short distance foot races. First, we describe the Hill-Keller model of competitive running, based on the solution to an optimal control problem, and then focus on that part of the model dealing with short distance races. Our task is to estimate two underlying physiological parameters that characterize the runner's performance. Second, we customize this submodel by linearizing Keller's analytical solution for short distance races, we then apply a high quality linear least squares estimation based on the Singular Value Decomposition (SVD) in order to estimate the two physiological parameters. …

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Theoretical Study Of Mbe Growth Of Indium Gallium Arsenide Semiconductor Compound On Gallium Arsenide Substrate, Golshan Colayni Jan 1999

Theoretical Study Of Mbe Growth Of Indium Gallium Arsenide Semiconductor Compound On Gallium Arsenide Substrate, Golshan Colayni

UNLV Retrospective Theses & Dissertations

The theoretical study of Molecular Beam Epitaxy allows us to model and construct an experiment with the same conditions. Growth modeling investigates compound semiconductor characteristics during the MBE growth which can achieve the best results to control the quality of growth. Growth modeling also is less expensive and faster than experiments. The wide variation in the band-gap and lattice constants between InAs and GaAs is a subject for a variety of optical and electronic device applications involving InGaAs/GaAs systems. In this material system, the perfection is intrinsically controlled by the surface segregation of In due to its larger atomic size …

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Fluid Flow And Slope Stability Model, Gene Cotner Jan 1999

Fluid Flow And Slope Stability Model, Gene Cotner

UNLV Retrospective Theses & Dissertations

The objective of this work was to develop a computer model to calculate the changes in factor of safety of a slope with time resulting from changes in the water saturation. A two-phase fluid flow model was incorporated to calculate the saturation and saturation changes in fractured and nonfractured soil and rock. A slope stability model was created to calculate the factor of safety. The fluid flow module executes for every time interval specified by the user. The slope stability module is executed at the end of any time interval when desired. As examples, factors of safety for the downstream …

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Gaming Growth In Clark County, Nevada: A Life Cycle Study, David Scott Frankhouser Jan 1999

Gaming Growth In Clark County, Nevada: A Life Cycle Study, David Scott Frankhouser

UNLV Retrospective Theses & Dissertations

The purpose of this study was to use product life cycle (PLC) theory to analyze the growth of gaming in Clark County, Nevada. Historical data for the last 30 years, provided by the Nevada Gaming Abstracts and the Las Vegas Convention and Visitors Authority, allowed average casino revenues, hotel occupancy percentages, and visitor statistics to be examined. Based on this analysis, Clark County can be described as in the consolidation stage of Butler's six-stage life cycle model. The information learned from this study helps to show that gaming is a unique form of tourist destination. As such, operators need to …

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The Relationship Between Casino Drop And Gaming Stock Performance: A Multivariate Analysis, Mark H Gilbert Jan 1999

The Relationship Between Casino Drop And Gaming Stock Performance: A Multivariate Analysis, Mark H Gilbert

UNLV Retrospective Theses & Dissertations

In reference to the gaming industry, investors and analysts examine many different variables that affect the financial viability of the business. Areas of investigation have included competition, governmental regulation, debt structure, cash flow, visitor volume, and so on; The purpose of this study was to analyze the relationship of yet another variable of casino performance, the casino drop, to gaming stock performance. Utilizing statistics provided from the State of Nevada's Gaming Revenue Report, the casino drop was divided into five segments, blackjack, craps, baccarat, quarter slots, and dollar slots; Tested by using a multiple regression analysis against a market capitalization-weighted …

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