Digital Commons Network^™

Synthesis, Extraction, Dissolution, And Voltammetry Of F-Species In A Room Temperature Ionic Liquid Solvent, Wendy Jacqueline Pemberton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Room temperature ionic liquids (RTILs) are salts that are liquids from as low as -96 °C to up to 100 °C. RTILs are of high interest in many fields of study because of their negligible vapor pressure, high electrochemical stability, high conductivity, and wide electrochemical windows. These diverse solvents have recently been used in organic synthesis, as extraction solvents, and as electrochemical solvents. It is as a direct result of the multifunctional capabilities of these RTIL solvents that they are examined in this work. The ability to probe the chemistry of lanthanides and actinides is based on the unique properties …

Adjusting Payroll With Changes In Business Volumes: An Examination Of Nevada Gaming Properties, Toni A. Repetti

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation analyzes expense preference behavior by managers of Nevada casinos. Annual aggregate data is obtained from the Nevada Gaming Control Board from 1990 to 2010. Using ordinary least squares regression, three models are run to account for various payroll related expenses. The dependent variable in the first model is number of employees. The second model uses salaries and wages as the dependent variable and the third model uses total payroll. All models include predictor variables of total revenue as an indication of size, a dummy variable for market concentration and a dummy variable for recessionary periods.

The finding show …

Equilibrium Speciation Of Select Lanthanides In The Presence Of Acidic Ligands In Homo- And Heterogeneous Solutions, Troy Robinson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation explores lanthanide speciation in liquid solution systems related to separation schemes involving the acidic ligands: bis(2-ethylhexyl) phosphoric acid (HDEHP), lactate, and 8-hydroxyquinoline. Equilibrium speciation of neodymium (Nd³⁺ ), sodium (Na⁺ ), HDEHP, water, and lactate in the TALSPEAK liquid-liquid extraction system was explored under varied Nd³⁺ loading of HDEHP in the organic phase and through extraction from aqueous HCl and lactate media. System speciation was probed through vapor pressure osmometry, visible and Fourier Transform Infrared (FTIR) spectroscopy, ²² Na and ¹³ C labeled lactate radiotracer distribution measurements, Karl Fischer titrations, and equilibrium pH measurements. Distribution …

Assessing A Combined Theories Approach To Climate Change Communication, Ted Greenhalgh

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research examines the complexities of communicating climate change risk information and the underlying individual attitudes and message content that affect message reception. Using climate change messages incorporating fear appeals and normative information subject's reactions to the messages were evaluated using the Theory of Planned Behavior model. The study found that fear appeals did increase behavioral intention to adopt a lower carbon lifestyle among test group subjects. The Theory of Planned Behavior model showed that attitudes and self-efficacy were significant predictors of the behavioral intent to adopt a lower carbon lifestyle, while community norms were only marginally predictive. However, not …

The Effect Of Endpoint Knowledge On Dot Enumeration, Alex Michael Moore

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study attempts to extend the principle tenets of the Overlapping Waves Theory (Siegler, 1996), a framework designed to explain the progression of trends in cognitive development, to adult participants’ performance in a dot enumeration task. Literature in the 0-100 number line estimation task (Siegler & Booth, 2004, Ashcraft & Moore, 2011) has revealed a pervasive trend in child estimation such that young children (especially those in kindergarten) respond with a logarithmic line of best fit, while children at the third grade and above overwhelmingly respond with linear estimates to this same range of numbers. A similar developmental trend is …

Phylogeography Of A Vanishing North American Songbird: The Painted Bunting (Passerina Ciris), Connie Ann Herr

UNLV Theses, Dissertations, Professional Papers, and Capstones

Studies of genetic variation within and between species can provide insights into their evolutionary history as well as important information for conserving biodiversity. An understanding of population processes can assist in the conservation of biodiversity by contrasting current versus historical patterns, and the processes that have generated these patterns. Genetic differentiation often coincides with significant geological or climatic changes that have shaped the sizes and locations of the species geographic range and altered the connectivity between populations over time. Phylogenetic and population genetic analyses can also provide a statistical framework for the investigation of how human processes such as habitat …

Improved Algorithms For Ear-Clipping Triangulation, Bartosz Kajak

UNLV Theses, Dissertations, Professional Papers, and Capstones

We consider the problem of improving ear-slicing algorithm for triangulating a simple polygon. We propose two variations of ear-slicing technique for generating “good-quality” triangulation. The first approach is based on searching for the best triangle along the boundary. The second approach considers polygon partitioning on a pre-process before applying the ear-slicing. Experimental investigation reveals that both approaches yield better quality triangulation than the standard ear-slicing method.

The Development And Validation Of A Tool To Measure Self-Confidence And Anxiety In Nursing Students While Making Clinical Decisions, Krista Alaine White

UNLV Theses, Dissertations, Professional Papers, and Capstones

Clinical decision making (CDM) is a cornerstone skill for nurses. Self-confidence and anxiety are two affective influences that impact the learning and adeptness of CDM. Currently, no instruments exist that measure perceived self-confidence and anxiety level of undergraduate nursing students related to CDM. The purpose of this research was to develop, test, and establish psychometric properties for a quantitative instrument that measures the levels of self-confidence and anxiety experienced by undergraduate nursing students while making clinical decisions. The new tool is entitled the Nursing Anxiety and Self-Confidence with Clinical Decision Making (NASC-CDM) scale. The tool is a self-report, Likert-type instrument …

Redefining Security In Sub-Saharan Africa, Winta Sintayehu Gebremariam

UNLV Theses, Dissertations, Professional Papers, and Capstones

New and challenging threats to humans are currently on the rise. These threats to human well being have been neglected and ignored within the traditional conception of security. Security studies have mainly focused on traditional threats, mostly military and political. Although still important, this perspective lacks the ability to address nontraditional threats that are killing and injuring millions each year. Each year, millions die of diseases such as HIV/AIDS, tuberculosis, malaria, hunger, and water related diseases among others. Although these threats are widespread throughout the world, Sub-Saharan Africa bears the brunt of these threats. This thesis proposes an ecological approach …

Time-Dependent Crack Growth Behavior Of Alloy 617 And Alloy 230 At Elevated Temperatures, Shawoon Kumar Roy

UNLV Theses, Dissertations, Professional Papers, and Capstones

Two Ni-base solid-solution-strengthened superalloys: INCONEL 617 and HAYNES 230 were studied to check sustained loading crack growth (SLCG) behavior at elevated temperatures appropriate for Next Generation Nuclear Plant (NGNP) applictaions with constant stress intensity factor (K _max = 27.75 MPa[checkmark]m) in air. The results indicate a time-dependent rate controlling process which can be characterized by a linear elastic fracture mechanics (LEFM) parameter - stress intensity factor (K). At elevated temperatures, the crack growth mechanism was best described using a damage zone concept. Based on results and study, SAGBOE (stress accelerated grain boundary oxidation embrittlement) is considered the primary reason for …

Structural, Electrical And Thermoelectric Properties Of Chromium Silicate Thin Films, Makram Abd El Qader

UNLV Theses, Dissertations, Professional Papers, and Capstones

Thermoelectric devices can generate electrical power as a result of their ability to produce electrical currents in the presence of thermal gradients. They can also produce refrigerative cooling when electrical power is supplied to them. Among the potential semiconducting silicides, CrSi ₂ is attractive because of its high thermal and chemical stability and its potential for thermoelectric application. CrSi₂ /SiO₂ thin-film structures were prepared using RF sputtering. As deposited and annealed (300°C to 600°C) thin films were characterized for their structural, electrical, and thermoelectric transport properties. As-sputtered CrSi ₂ film is amorphous at room temperature and crystallizes around …

Cyber Physical Complex Networks, Modeling, Analysis, And Control, Neveen Shlayan

UNLV Theses, Dissertations, Professional Papers, and Capstones

This research scrutinize various attributes of complex networks; mainly, modeling, sensing, estimation, safety analysis, and control. In this study, formal languages and finite automata are used for modeling incident management processes. Safety properties are checked in order to verify the system. This method introduces a systematic approach to incident management protocols that are governed by mostly unsystematic algorithms. A portion of the used data in this study is collected by means of radar and loop detectors. A weighted t-statistics methodology is developed in order to validate these detectors. The detector data is then used to extract travel time information where …

Traffic Safety: Modeling, Analysis And Visualization, Puneet Lakhanpal

UNLV Theses, Dissertations, Professional Papers, and Capstones

Traffic Safety has always been one of the major issues of concern in United States. Every year, stringent efforts are made by the national agencies and safety offices to uplift the traffic safety standards and build systems which can guide them in policy making, reducing crashes and routing the financial resources in an optimal direction. This thesis studies the traffic safety from three different angles: modeling, analysis and visualization. In the beginning, these three components are explored in the domain of Injury Severity. Later on, the focus is shifted towards the Traffic Safety related to Safety Belts. Factors and models …

In Quest Of A Dropout Theory: Examining The Utility Of An Ecological Approach Through Survey Research, Tiffany G. Tyler

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study examined the utility of Bronfenbrenner's Ecological Theory as a metatheory of dropout. Using the NELS: 1988 dataset, the present study examined the relationship between dropout attributions and Bronfenbrenner's construct, the microsystem. Attention was given to accounting for students' attributions regarding their identity (e.g., demographic and profile characteristics) with environmental and regional contexts as possible moderators. In particular, the present study examined the responses given as reasons for dropout in view of how those responses could be categorized with Bronfenbrenner's theoretical structure and the extent to which the resulting categorization could predict dropout, considering related demographic variable.

This study …

Development Of A Sustainable Water Resource Financing Mathematical Model For Donors And End-Users, Sahar Zavareh

UNLV Theses, Dissertations, Professional Papers, and Capstones

Rural villages and underdeveloped communities represent the largest group challenged by poor water supply and sanitation with inequalities in resources to adequately implement potential solutions and even more with their high risk level of financing, funding is particularly challenging for water projects. Innovative financing alone will not eliminate the burdens of rural villages and underdeveloped communities. The purpose of this thesis is to address the lack of sustainable water financing of water projects in rural areas using a novel framework of a mathematical model based on "system dynamics" using optimal feedback control theory to maximize the performance of a water …

Technology Base Self Service In Hospitality Industry, Wan Chi Chen

UNLV Theses, Dissertations, Professional Papers, and Capstones

There are more and more technology based self service (TBSS) encountering people’s daily life, even hospitality industry, where people pay to get service, has began to add TBSS as part of their service. Some people believe this TBSS is the trend for the future, but some others who have experienced this service believe that traditional human touch service (THTS) will be remain as the main service providing channel. While people are wondering what kind of service to provide as they want to get a high return on their investment, they need to have a better understanding on self service technology. …

Research Study Proposal For Nightlife Company (San Francisco, Ca), Trevor Hewitt

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction:

This research proposal proposes a study to evaluate the differences in consumer spending amongst a company’s three types of customers (pre-sale ticketed, paid admission, free admission) once granted entry to one of the company’s nightclub venues in order to evaluate the optimal supply mix of customer type to maximize revenues. Since the company’s venue has a finite customer capacity limit due to safety and fire regulations and laws and it generally reaches these legal capacity levels on the vast majority of the nights it is open for business (leaving surplus customers unable to enter the venue), the proposed research …

Sunshine Café: A Breakfast Restaurant Business Plan, Lillian I. Burrow

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose:

The purpose of this paper is to create a business plan for the SunShine Café. While the commonly known statistic of 90% of restaurants fail within the first year is false, approximately 60% of restaurants do fail within their first three years of operation (Parsa, Self, Njite, & King, 2005). The problem for entrepreneurs starting a restaurant is how does one reduce this risk of failure.

One way to minimize this risk is to create a business plan. Thus the main objective of this paper is to create a business plan that will not only help the restaurant develop …

Hospitality Loyalty Program Effectiveness Evaluation Rubric, Nazia Charania

UNLV Theses, Dissertations, Professional Papers, and Capstones

This paper examines the various loyalty program strategies and design elements utilized within the hospitality industry and evaluates the implications of the various strategies on establishing and fostering loyalty among consumers within a hyper competitive industry. In order to maintain competitive parity, many programs have constantly lowered reward thresholds and increased program offerings, making such programs very costly and with little direct evaluation in their ability to stimulate true loyalty. In a society bombarded by loyalty programs in almost all industries, consumers are becoming very savvy in comparing their personal rewards to the effort and inconveniences incurred by enrolling. The …

An Exploratory Study Of Casino Customer Loyalty Programs, Cristina R. Crofts

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study summarizes academic theories and industry applications related to customer loyalty programs, drawing on literature pertaining to reciprocity and resource theory, attitudinal loyalty, tiered loyalty programs, and reward type and timing. Specifically, this study attempts to understand aspects that have been proven successful in order to design more effective customer loyalty programs. This literature synthesis provides important professional implications for casino executives in effectively designing customer loyalty programs.

Preventing Workplace Injuries Commonly Sustained By Hotel Guestroom Attendants, Jennifer Daros

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction:

Hotels are generally organized into various departments. These provide specialized services to guests. Almost every hotel in the world has (in one form or another) a housekeeping department. Guestroom attendants (GRAs) are a primary component of any housekeeping department. GRAs (also known as maids, housekeepers, or room/suite service attendants) are employed by hotels to clean guestrooms, change bed linens, restock supplies, and provide turn down services when requested (see Appendix A). Those employed as GRAs frequently suffer injuries at work that can be costly to employers. This paper reviews some of the more common causes of GRA workplace injuries …

Business Plan For 1st Street Diner And Nightclub, Brian D. Deets

UNLV Theses, Dissertations, Professional Papers, and Capstones

A business plan was created for a diner and nightclub located in downtown Des Moines, Iowa, and the concept was found to be unique to the Des Moines area. The downtown community is home to sixty-six American-cuisine eateries, is under continued development, and looking to house more restaurant and entertainment establishments. Des Moines has a five-county metropolitan area with a population of 562,000 and Des Moines alone is home to 200,000 people. The downtown community is growing, and with the projected employment outlook to rise 11%, downtown’s 77,000 employees will also increase. These findings suggest that there is a market …

A Cultural Perspective On Motivation Factors Affecting Exhibition Participation, Young Ki Lee

UNLV Theses, Dissertations, Professional Papers, and Capstones

With increasing global competitions, more opportunities transcending national boundaries may exist for the exhibition organizers and participants. This study offered an integrated approach to understanding how various motivation factors affect the participation in exhibition. The literature review included an introduction of push/pull motivation theories as one of the most representative motivation theories. The factor analysis of survey results supported the categorization of push/pull factors in exhibition industry. The paper concluded that the factor analysis procedures yielded the motivation factor dimensions with similar natures and four underlined motivation dimensions of exhibition participation were labeled. Furthermore, the cultural difference between Western and …

E-Mail Management Of Japanese Hotels In Comparison With South Korean Hotels, Kyoko Morikoshi

UNLV Theses, Dissertations, Professional Papers, and Capstones

There has been little study done concerning the service quality of Japanese hotels toward foreign guests; especially e-mail management in English has not been analyzed in Japan before. Since e-mail inquiries in English from foreign guests could be the first step for Japanese hotels to provide good service to prospective guests, managing English e-mails efficiently is a key to attracting more foreign guests. Therefore this study examined the actual condition of e-mail management at Japanese hotels by sending an English inquiry to them. Korean hotels were also included because South Korea and Japan have similar linguistic and economic backgrounds. A …

Evaluating Websites By Features: Do Independent Hotels In Singapore Get It Right?, Prasetya Purnawan

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study aims to evaluate the websites of independent hotels in Singapore in the business-to-consumer (B2C) framework. The modified balanced scorecard (BSC) approach is incorporated into the evaluation by features method in order to avoid the dominance of the marketing perspective by including technical, customer, and destination information perspectives. A set of website evaluation criteria representing these four perspectives is then used to examine the websites of 37 independent hotels. Almost three of four hotels get it right in developing, utilizing, and maintaining their websites. These websites have the presence of features that are known to be contributing towards website …

Hotel Front Office Training: Turning Expense Into Investment, Thomas Sanders

UNLV Theses, Dissertations, Professional Papers, and Capstones

The process of employee training is typically looked upon as an expense, but perhaps a more insightful view would be to consider employee training an investment. This becomes possible when employees are taught to execute service-marketing principles during customer interactions. Well-executed interactions then lead to satisfied guests, repeat purchases, and company profitability. The purpose of this paper is to develop a customer focused training guideline integrating service-marketing concepts into the front office employee training process. A literature review was conducted to identify service marketing concepts and best training practices that can be applied to the hotel employee workplace. This information …

Cultural Acceptance And Its Effect On Tourism, I-Hsuan Shih

UNLV Theses, Dissertations, Professional Papers, and Capstones

This professional paper examines the relationship between cultural acceptance in conjunction with social perception and cultural tourism promotion strategies. It provides a matrix to evaluate the likely success of promoting a specific cultural aspect of a destination and suggestions for ways of dealing with a lack of cultural acceptance or negative perceptions. It underscores the need for tourism strategic planners to take into account the cultural acceptance of a proposed project by the host community before proceeding.

The Green Movement In Hotels: Are College Students On Board?, Amy Walker

UNLV Theses, Dissertations, Professional Papers, and Capstones

Purpose:

The purpose of this study is to see if environmentally friendly practices are a factor for college students when selecting a hotel. Another purpose of this study is to see if students would be willing to spend more for hotels who offer these environmentally friendly practices.

The Management Of An Indigenous Hotel Chain Company In China: A Case Study Of Sichuan Minshan Hotel Corporation, Yinglin Wang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Justification:

The hotel industry has a comparatively lower threshold for market entry. This has enabled many international foreign competitors to successfully take up a fairly large share of this market. The competition in this emerging industry in China is becoming increasingly fierce as time progresses. Due to the pressure of growing number of foreign competitors, some indigenous hotels in China have started to follow in their footsteps and expand their sister properties across the country. However managing hotel chain properties is still new to most of these indigenous hotel chain organizations and the hotel chain effects of maximizing profits have …

The Modern Brand: A Guide To The Intigration Of Csr Practices Into Hotel Branding, Matthew Warren

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction:

There are certain components of the hospitality industry that make it unique in comparison to other industries. One of those components is the perishability that is associated with the hotel product. When it comes to hotel rooms, if a room is left empty then there is instantly lost profit for that property with no way of recovering it. In order to make maximum profit all rooms must be filled each night, this makes the task of attracting customers of the upmost importance within the industry. One of the primary ways in which hospitality companies have strived to attract customers …