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In An Expert's Hands: Issues Of Self And Personality As Reflected In Hair Choices, Sheree Christine Royer
In An Expert's Hands: Issues Of Self And Personality As Reflected In Hair Choices, Sheree Christine Royer
UNLV Retrospective Theses & Dissertations
This study developed an understanding of women's sense of self. Using the Humanistic perspective of self image, which is one's perception of one's self that includes a person's perception of his/her personality, ability and images of his/her body (Coon, 1992). This micro-ethnography included 21 female participants obtained from an expert hair stylist's clientele. These participants were either interviewed, completed personality questionnaires and/or completed follow-up and member check questionnaires. Several analyses were completed with the acquired data which resulted in rich and descriptive data. Findings indicate that participants associated their hair with their sense of self. Personal freedom as it pertains …
Hydrologic Impacts Due To Application Of Dust Suppressants, Vivek Singh
Hydrologic Impacts Due To Application Of Dust Suppressants, Vivek Singh
UNLV Retrospective Theses & Dissertations
This study presents research on changes in hydrologic characteristics of disturbed land surfaces that have been treated with dust suppressants. The objective of this research was to develop a better understanding of the impacts, related to application of dust suppressants. Changes in runoff characteristics were investigated in the field, using a rainfall simulator on plots (which represented disturbed land surfaces) treated with 11 different dust suppressants. Results of the study indicate a general increase in the runoff coefficient as well as an increase in the runoff rates and volume of runoff from these dust suppressant treated plots. Extrapolation of the …
Garnet-Biotite Thermometry, Garnet-Aluminum Silicate-Silica-Plagioclase Barometry, And Emp Monazite Geochronology Of The Early Proterozoic Ivanpah Mountains, Eastern Mojave Desert, Se California, David Allen Shields
UNLV Retrospective Theses & Dissertations
Metamorphic fabric measurements indicate only one deformational fabric (NNE) is present in the Ivanpah Mountains, indicating that the area experienced one orogenic event during the Early Proterozoic. Peak P-T conditions, using garnet-Al2SiO5-silica-plagioclase barometry and garnet-biotite thermometry, were ∼4.0kb and >700°C, respectively. Peak metamorphic-T's were recorded by the largest garnet studied; Electron Microprobe Analysis on monazite, using U-Th-Pb radioactive decay, suggest metamorphism occurred between 1752 +/- 86 Ma and 1689 +/- 34 Ma, similar to the age of the Yavapai terrane (∼1.70--1.69 Ma). These ages are constrained from six monazite grains included in three large garnets (2250--5000um). Matrix monazite from granitic …
Theoretical Study Of Segregation Kinetics Of Indium In Indium Gallium Nitride And Magnesium In Magnesium-Gallium Nitride Grown By Molecular Beam Epitaxy, Irena Vidhya Mabel Stanley
Theoretical Study Of Segregation Kinetics Of Indium In Indium Gallium Nitride And Magnesium In Magnesium-Gallium Nitride Grown By Molecular Beam Epitaxy, Irena Vidhya Mabel Stanley
UNLV Retrospective Theses & Dissertations
A rate equation model including all physically relevant surface processes is developed for the study of In segregation in InGaN and Mg segregation in Mg-GaN MBE growth. In InGaN growth, the simulations were carried for a variety of growth conditions spanning the growth parameter space: substrate temperature in the range of 500--700°C: Ga flux in the range of 1.17--8.98 nm/min: In flux in the range of 0.39--28.74 nm/min and N flux in the range of 4.7--12 nm/min. Results of In incorporation obtained from simulations are within 1% agreement with the experiments reported in the literature. In segregation is found to …
Centralized Prevention Of Denial Of Service Attacks, Michael R Sthultz
Centralized Prevention Of Denial Of Service Attacks, Michael R Sthultz
UNLV Retrospective Theses & Dissertations
The world has come to depend on the Internet at an increasing rate for communication, e-commerce, and many other essential services. As such, the Internet has become an integral part of the workings of society at large. This has lead to an increased vulnerability to remotely controlled disruption of vital commercial and government operations---with obvious implications. This disruption can be caused by an attack on one or more specific networks which will deny service to legitimate users or an attack on the Internet itself by creating large amounts of spurious traffic (which will deny services to many or all networks). …
Acute Effect On Vertical Jump Performance After Two Types Of Heavy Squat Exercises, Masai Takahashi
Acute Effect On Vertical Jump Performance After Two Types Of Heavy Squat Exercises, Masai Takahashi
UNLV Retrospective Theses & Dissertations
The purpose of this study was to compare vertical jump heights achieved before and after performing the half squat, or the quarter squat exercise. 10 male subjects experienced with the squat exercise performed 4 warm-up squat sets followed by 1 repetition with the weight of 90% of 1 RM half squat or quarter squat. No difference in jump heights after any of the three conditions including a control group (F = 3.096, p = 0.070) was found. Correlations between the relative strength ratio and the difference in averaged jump heights before and after the half and the quarter squat conditions …
Ridgelets: A Promising New Wavelet-Like Transform To Represent Objects With Linear Singularities, Maria Beatriz Teruel
Ridgelets: A Promising New Wavelet-Like Transform To Represent Objects With Linear Singularities, Maria Beatriz Teruel
UNLV Retrospective Theses & Dissertations
In the last two decades plenty of research has been carried out in the field of Wavelet theory and it is well known that wavelets can efficiently deal with point-like singularities. Unfortunately, such is not the case for higher dimensions singularities. To overcome this weakness of the Wavelet transform E. Candes and D. Donoho [4] introduced a new wavelet-like transform that can effectively deal with linear singularities in two dimensions, namely the Ridgelet transform. This new representation tool exploits the ability of wavelets to deal with point singularities. In fact, the Ridgelet transform is equivalent to a one-dimensional wavelet transform …
The Uses And Gratifications Of The World Wide Web At The University Of Nevada-Las Vegas, Peter P Testa
The Uses And Gratifications Of The World Wide Web At The University Of Nevada-Las Vegas, Peter P Testa
UNLV Retrospective Theses & Dissertations
This study extends the uses and gratifications theory to the World Wide Web. Studies like these examine what the Web is used for, and what needs are gratified by using the Web. One hundred thirty college students at the University of Nevada-Las Vegas were surveyed on media and Web usage and gratifications. This study introduces the factors of self-perception of residency and of traditional vs. non-traditional student as influences on Web usage and gratifications for college students; Loneliness was deemed a significant factor for students who did not consider themselves Las Vegas residents. Students who do not consider themselves to …
Shock Attenuation During Heel-Strike, Forefoot-Strike, And Spring-Boot Running, Jason Thomas Vance
Shock Attenuation During Heel-Strike, Forefoot-Strike, And Spring-Boot Running, Jason Thomas Vance
UNLV Retrospective Theses & Dissertations
During running, the foot's impact with the ground generates a shock wave that propagates up the body and is attenuated before reaching the head. This study investigated mechanisms of shock attenuation (SA) during heel-strike (HS), forefoot strike (FFS), and spring-boot (SB) running; Participants (n = 10) ran at 3.83 m·s-1 while head and leg impact acceleration, SA, and ankle and knee energy absorption were recorded and analyzed across the impact phase during HS, FFS, and SB conditions; Shock attenuation and leg acceleration were not different across conditions. Head acceleration (HS > FFS = SB), ankle energy absorption (FFS > HS > SB) and …
Selective Mutism: Unwilling To Speak Or Scared Silent?, Jennifer Lynn Vecchio
Selective Mutism: Unwilling To Speak Or Scared Silent?, Jennifer Lynn Vecchio
UNLV Retrospective Theses & Dissertations
To examine the relationship between selective mutism and anxiety, 15 children with selective mutism (SM) were compared to 15 children with anxiety disorders (AD) and a control group of 15 nonclinical children (CN). The study included children age 4--10 years and relied on information from multiple informants. Each participant was assessed by the Anxiety Disorders Interview Schedule for Children for DSM-IV, Child Behavior Checklist, Teacher Report Form, Behavioral Style Questionnaire, and the Family Environment Scale. Results indicate that SM children closely resemble AD children. The SM and AD groups substantially differed from the CN group with regards to internalizing behavior …
The Relationship Between Restaurant Attribute Satisfaction And Return Intent In Theme Restaurants, Rachel Dawn Weiss
The Relationship Between Restaurant Attribute Satisfaction And Return Intent In Theme Restaurants, Rachel Dawn Weiss
UNLV Retrospective Theses & Dissertations
Theme restaurants were designed to provide their customers with a meal coupled with an entertaining experience (Bagli, 1998). After a rapid rise in popularity in the early to mid 1990's, theme restaurants began to experience a decline in market share. As the theme restaurant segment experiences the downsizing of many once popular brands, it is imperative that the industry segment investigate customer satisfaction with restaurant attributes in order to assess which areas are in need of improvement. Although much research has been conducted on customer satisfaction in the service industries, none has focused on the theme restaurant industry in particular. …
Depositional History Of The Black Mountain Conglomerate, Mohave County, Arizona: Sedimentary Response To Miocene Extension, Michelle Marie Williams
Depositional History Of The Black Mountain Conglomerate, Mohave County, Arizona: Sedimentary Response To Miocene Extension, Michelle Marie Williams
UNLV Retrospective Theses & Dissertations
This study documents the Miocene depositional and extensional history for the area west of Wilson Ridge in the Black Mountains, northwestern Arizona. The field area, part of the Basin and Range province, lies within an area that experienced northward migration of intense volcanism several million years prior to significant regional extension. Extension propagated northward through the northern Colorado River extensional corridor to the Lake Mead area. Clastic sedimentary rocks in the basin are linked to the extension of the region; Documentation of the basin fill was conducted with the aim of determining whether sedimentary clasts can be tied to lithologies …
Determination Of The Physiological Responses Of Female Fire Fighters While Working In The Heat, Paulette Marisa Michie Yamada
Determination Of The Physiological Responses Of Female Fire Fighters While Working In The Heat, Paulette Marisa Michie Yamada
UNLV Retrospective Theses & Dissertations
This study determined the physiological responses of female fire fighters to two similar bouts of work in the heat. Peak heart rates (HR), peak oxygen consumption (VO2), peak rectal temperatures (Trec), peak mean skin temperature (MST), and ratings of perceived exertion (RPE) were compared between two work bouts which were separated by a standard recovery period. Seven female fire fighters walked for twenty minutes in complete fire fighting ensembles at 50% of their VO2max in a 40°C environment. After the first work bout (WB1), subjects removed their protective clothing, rehydrated and rested in front of a fan until their Trec …
Creating Community Through Symbolic Discourse: An Analysis Of Jesse Jackson's Rhetoric At The Democratic National Conventions, 1984--2000, Lance Michael Young
Creating Community Through Symbolic Discourse: An Analysis Of Jesse Jackson's Rhetoric At The Democratic National Conventions, 1984--2000, Lance Michael Young
UNLV Retrospective Theses & Dissertations
The Reverend Jesse Louis Jackson has addressed the Democratic National Convention through five consecutive election cycles. Jackson's political involvement works to challenge the majority value system. Each address aims to create a community consisting of minority voices in America by bringing them into the Democratic Party in hopes of changing national policy. Metaphorical strategy is used to symbolically create a community consisting of minority voices, the Democratic Party, and Jackson himself as the prophetic leader. Symbolically unifying the community against a common enemy strengthens Jackson's community.
Differences In Television Use Between Adopted And Non-Adopted College-Aged Adults, Christopher Edward Yunker
Differences In Television Use Between Adopted And Non-Adopted College-Aged Adults, Christopher Edward Yunker
UNLV Retrospective Theses & Dissertations
This thesis is an original study that examines the media usage between adoptive and non-adoptive college-aged adults United States. The beginning of this thesis will focus primarily on television's ability to get a message across to a huge audience in the shortest amount of time. It will state the hypotheses and examine the research questions being sought. Simultaneously, it will examine the effect the media has on our youth. Hypothetically, adopted children have been more susceptible to the messages delivered. It will be the intent to analyze and discuss this susceptibility further in this thesis; The survey asked the subjects …
The Effects Of Exercise On Homocysteine Levels In Men And Women, Tracey Michelle Zuehlsdorff
The Effects Of Exercise On Homocysteine Levels In Men And Women, Tracey Michelle Zuehlsdorff
UNLV Retrospective Theses & Dissertations
A recent coronary risk factor, and one believed to be and important biochemical marker of Coronary Heart Disease, is elevated levels of serum homocysteine (Boushley et al., 1995; Malinow et al., 1994; Malinow et al., 1999; Nygard et al., 1995; Stampfer et al., 1992). Serum homocysteine levels above 10 umol/L are considered elevated. There are several unalterable factors, which result in the elevation of homocysteine such as heredity, age, and gender. There are other factors that are alterable such as diet and possibly exercise. The purpose of the study was to determine if a 12-week daily progressive exercise program reduced …
Convention Outsourcing: An Examination Of Outsourcing Benefits And Service Quality Of Convention Services Outsourced For Association Meetings, Hee Jung Ro
UNLV Retrospective Theses & Dissertations
This study examined outsourcing benefits and service quality of convention services outsourced for association meetings. An on-line survey was e-mailed to 1,790 association meeting planners and 253 responses were used for data analysis; Six convention services were identified to have significant impact on overall outsourcing benefits. It provides meeting planners with guidance concerning which convention services are most appropriate for deploying outsourcing decisions. Also service quality of outsourced convention services was examined and identified some problem areas in this study. An awareness of this service quality issue of outsourced services assists the association meeting planners in ensuring that suppliers of …
Evaluating Relative Productivity And Efficiency Of Hospitality Properties Using Data Envelopment Analysis, Elena Igorevna Champaner
Evaluating Relative Productivity And Efficiency Of Hospitality Properties Using Data Envelopment Analysis, Elena Igorevna Champaner
UNLV Retrospective Theses & Dissertations
The concept of productivity and efficiency is essential to any hospitality company as such companies usually face severe competition and operate in an ever-changing business environment. Purely financial measures of evaluating hospitality efficiency and productivity are not sufficient in the long-term. This study makes an attempt to evaluate the productivity and efficiency of hospitality operations using a nonparametric technique called Data Envelopment Analysis (DEA). DEA is a special linear programming model for deriving the comparative efficiency of multiple-input multiple-output decision-making units. In many industries, the use of DEA helped properties identify millions of dollars of annual expense savings not identifiable …
A Study Of The Effects Of Lithium Perchlorate On Poly(Ethylene Oxide), (Peo) Melt Dynamic Behavior Using Fabry-Perot Interferometry, Radoslav Boykov Bogoslovov
A Study Of The Effects Of Lithium Perchlorate On Poly(Ethylene Oxide), (Peo) Melt Dynamic Behavior Using Fabry-Perot Interferometry, Radoslav Boykov Bogoslovov
UNLV Retrospective Theses & Dissertations
Poly(ethylene oxide)/lithium perchlorate (PEO/LiClO4) complexes are widely studied as a prototype solid polymer electrolyte in rechargeable lithium-polymer batteries. Characterizing the structure and dynamics of the system in its molten state is important for understanding the role of the polymer environment in lithium ion transport and conductivity. We implement a fiber-optic coupled Fabry-Perot interferometer to investigate the electrolyte elastic properties and structural response times, which are both related to the intrachain local mobility and therefore to ion diffusion. We propose a simple and inexpensive fiber-optic experimental design combining two experimental techniques, Fabry-Perot interferometry and photon correlation spectroscopy. Our tests and evaluation …
Investigation Of Phosphines As Potential Host Materials In Blue Dye-Doped Organic Light Emitting Devices, Murukkuwadura Aruni Desilva
Investigation Of Phosphines As Potential Host Materials In Blue Dye-Doped Organic Light Emitting Devices, Murukkuwadura Aruni Desilva
UNLV Retrospective Theses & Dissertations
Currently, the most efficient organic light emitting devices (OLEDs) are based on dye-doped OLEDs. The major obstacle has been developing a host material for blue OLEDs that has sufficiently high energy of emission (<380nm) to facilitate energy transfer to the dye. Previous studies of bis(diphenylphosphino)-E-Stilbene (P-STIL) suggested that tertiary aromatic diphosphines (TAPs) may be suitable candidates. Therefore, the P-containing materials, 4,4'-bis(naphthylphenylphosphino)biphenyl (alpha-P-NPD) and 4,4'-bis(diphenylphosphino)biphenyl (P-DDB) were synthesized and the photophysical properties were evaluated and compared to P-STIL. The TAPs were shown to be sensitive to air oxidation both in solution and the solid state and that the origin of the high energy emission of P-STIL was from the oxide. Furthermore, all TAPs were shown to exhibit dual emission, which may result from different structural geometries about the P-atom in the excited state. Theses studies conclusively demonstrate that TAPs are not suitable as host materials fro blue dye-doped OLEDs, but the fully oxidized materials, which are more stable and emit at higher energy may be better candidates.
The Distribution Of Phosphorus In The Nature Preserve At The Clark County Wetlands Park In Las Vegas, Nevada, Rosangela Gomes Brazao
The Distribution Of Phosphorus In The Nature Preserve At The Clark County Wetlands Park In Las Vegas, Nevada, Rosangela Gomes Brazao
UNLV Retrospective Theses & Dissertations
The main objective of this thesis was to investigate the distribution of phosphorus among three different compartments of the Upper Pond at the Nature Preserve at the Clark County Wetlands Park in Las Vegas, NV: influent and effluent water, sediments, and plants. Samples were collected from September 2002 to January of 2003 and analyzed for phosphorus content. Results showed that the Upper Pond removed 55% of the ortho phosphate (OP) and 39% of the total phosphorus (TP) loadings during the study period. Sediment results showed that the East Outflow concentrated the most P (644.85 +/- 120.26 mg P Kg-1), followed …
Overcrowding And Its Effects On Inmate Violent Behavior In Prison, John C Devaney
Overcrowding And Its Effects On Inmate Violent Behavior In Prison, John C Devaney
UNLV Retrospective Theses & Dissertations
Prisons in the United States are overcrowded. The problem of overcrowding has worsened as the years have gone on, especially since the war on drugs and determinate sentencing, have become a part of the American Justice System. This overcrowding has led to concerns about what effects it might have on those that are incarcerated. This study looks at the effects this overcrowding has on inmate violent behavior. Prison administrators are charged with providing a safe and secure atmosphere for inmates to serve the time that they are sentenced to by the states and federal governments. If this overcrowding is creating …
Identification Of Dynamic Properties Of Materials For The Spent Nuclear Fuel Package At Elevated Temperatures, Sirisha Dusi
Identification Of Dynamic Properties Of Materials For The Spent Nuclear Fuel Package At Elevated Temperatures, Sirisha Dusi
UNLV Retrospective Theses & Dissertations
This thesis attempts to experimentally identify the dynamic properties of materials for the spent nuclear fuel package at elevated temperatures. The implementation of the project involves a number of steps. First, candidate materials for the nuclear fuel package and the appropriate testing systems were identified [15]. Second, fixtures for tensile testing at elevated temperatures using two machines, namely MTS and Instron Dynatup testing machines were designed and manufactured to make them compatible with the room temperature fixture. Third, experimental procedures for elevated temperature testing of materials are proposed for the two testing machines. Finally, impact testing for the candidate materials …
Development Of An Instrument For Accessing Quality Of A Convention And Visitors Bureau Web Site, Myounghee Ha
Development Of An Instrument For Accessing Quality Of A Convention And Visitors Bureau Web Site, Myounghee Ha
UNLV Retrospective Theses & Dissertations
The continuing growth of the Internet and its associated technology has created a new type of market for meeting managers and Convention and Visitors Bureaus (CVBs), and has become a viable alternative to traditional communication media and service delivery tools. As Internet and web site usage by meeting managers' increase, CVBs should enhance and upgrade their web sites to keep in step with customers' needs and expectations; The purpose of this study is to identify general usage and overall perceptions of CVB web sites and CVB web sites' content items and design attributes that are most important as perceived by …
Sampling Inner Experience In Individuals With Anxiety, Lessel Lyle Hutchins
Sampling Inner Experience In Individuals With Anxiety, Lessel Lyle Hutchins
UNLV Retrospective Theses & Dissertations
The current study examines the inner experience of five individuals who report symptoms of anxiety and three control individuals. Descriptive Experience Sampling (DES) is the method that was used to examine inner (subjective) experience. Idiographic result chapters have been written for all eight of the participants involved in this study. These results include a description of an anxious participant who feels (emotionally) her way through life, another who is nearly always experiencing an acute awareness of sensory aspects of his environment or nothing at all, and another who solves problems through "rapid fire" reverse-order mental images. These results are followed …
Cost Management Preferences Of Small Restaurant Firms, Hessun (Amy) Kim
Cost Management Preferences Of Small Restaurant Firms, Hessun (Amy) Kim
UNLV Retrospective Theses & Dissertations
The purpose of this study is to test cost management preferences of small restaurant firms. It attempts to identify whether managers of small restaurant firms behave differently depending on the level of conflict as noted by agency theory and expense preference theory; Data from 87 private small restaurant firms were used. Cost of doing business, size of staff and five accounting ratios (ROE, ROA, Profit Margin, Financial Leverage and Asset Utilization) were used as dependent variables. Three independent variables, type of management, family-owned factor and ownership percentage were used as the sources of variance. The results from the analysis of …
Structural Characterization Of Polyurethane Foam And Implications Of Aging, Gayani Chandima Kodippili
Structural Characterization Of Polyurethane Foam And Implications Of Aging, Gayani Chandima Kodippili
UNLV Retrospective Theses & Dissertations
Polyurethane (PU) foam is used as a shock mitigation material in the national stockpile, which degrades over time. A replacement foam, ReCrete was shown to exhibit acceptable mechanical properties after aging, but fractured with impact testing. Previously, processing ReCrete foam at elevated temperature resulted in a decrease of the modulus (stiffness), which was believed to be related to chemical changes during processing. In this thesis, chemical and structural analysis of ReCrete processed at 25°C and 85°C were performed using photoacoustic infrared spectroscopy, IR imaging, and thermal analysis. The change in modulus was related to thermal decomposition of uretoneimine linkages in …
A Relational Post-Processing Approach For Forms Recognition, Zhenxing Mao
A Relational Post-Processing Approach For Forms Recognition, Zhenxing Mao
UNLV Retrospective Theses & Dissertations
Optical Character Recognition (OCR) is used to convert paper documents into electronic form. Unfortunately the technology is not perfect and the output can be erroneous. Conversion then is generally augmented by manual error detection and correction procedures which can be very costly; One approach to minimizing cost is to apply an OCR post processing system that will reduce the amount of manual correction required. The post processor takes advantage of knowledge associated with a particular project; In this thesis, we look into the feasibility of using integrity constraints to detect and correct errors in forms recognition. The general idea is …
Strategic Training In The Use Of Causal Diagrams: Facilitation Of Superior Mental Models, Anne Seyer Poliquin
Strategic Training In The Use Of Causal Diagrams: Facilitation Of Superior Mental Models, Anne Seyer Poliquin
UNLV Retrospective Theses & Dissertations
This study focused on the influence of strategic learning on the construction of causal diagrams and their role in text learning. A causal diagram is an instructional adjunct designed to enhance text comprehension by providing a visual representation integrating elements of cause and effect. The Integrated Model of Text and Picture Comprehension (IMTPC) (Schnotz & Bannert, 1999) suggests that diagrams improve learning because they facilitate the construction of mental models via simultaneous comprehension of visual and text elements. However, there is no information on how to achieve this benefit consistently. Scevak, Moore, and Kirby (1993) have demonstrated that this benefit …
Genetic Algorithms For The Traveling Salesman Problem Using Edge Assembly Crossovers, Dwain Alan Seppala
Genetic Algorithms For The Traveling Salesman Problem Using Edge Assembly Crossovers, Dwain Alan Seppala
UNLV Retrospective Theses & Dissertations
The central issue in creating new genetic algorithms is the algorithm's crossover method. My focus is on a particular crossover known as the Edge Assembly Crossover, or EAX, by Nagata and Kobayashi. The basics of a what make up a genetic algorithm is reviewed. The traveling salesman problem is defined. The EAX as an algorithm within an algorithm is explained. The crossover's implementation is original and is listed. The use of the graphic user interface, TSP View, used to run algorithms is explained as well as the extensions to the interface that were implemented for this study. The results of …