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Study Of A Non-Equilibrium Plasma Pinch With Application For Microwave Generation, Ahmad Al Agry

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Non-Equilibrium Plasma Pinch (NEPP), also known as the Dense Plasma Focus (DPF) is well known as a source of energetic ions, relativistic electrons and neutrons as well as electromagnetic radiation extending from the infrared to X-ray. In this dissertation, the operation of a 15 kJ, Mather type, NEPP machine is studied in detail. A large number of experiments are carried out to tune the machine parameters for best performance using helium and hydrogen as filling gases. The NEPP machine is modified to be able to extract the copious number of electrons generated at the pinch. A hollow anode with …

Numerical Modeling Of Heat Pipe Radiator And Fin Size Optimization For Low And No Gravity Environments, Virginia Ruth Bieger

UNLV Theses, Dissertations, Professional Papers, and Capstones

A heat-pipe radiator element has been designed and modeled to study the efficiency of heat transfer for low and no gravity environments, like in lunar environments. The advantages of using heat pipe includes the significant weight reducing and heat transfer efficiency. The heat transfer can be enhanced by the use of condenser sections with attached fins.

A series of various geometries of solid fins and heat pipes with and without fins were modeled using FLUENT®. This was done to determine the validity of using a heat pipe in lieu of a solid fin projection. A heat pipe had a 25 …

Paleoecology Of Late Pleistocene Megaherbivores: Stable Isotope Reconstruction Of Environment, Climate, And Response, Aubrey Mae Bonde

UNLV Theses, Dissertations, Professional Papers, and Capstones

Late Pleistocene megaherbivore communities of the Pacific and Mountain West states of California and Nevada are under-analyzed in regard to ecological function (diet, mobility, niche partitioning, and range of ecological tolerance). Stable isotope analysis is a powerful tool that is known to recover primary paleodiet and paleoenvironmental information from biogenic materials, such as enamel and dentin. This dissertation explores the use of carbon and oxygen stable isotopes in Late Pleistocene (40-10 Ka) megaherbivore teeth to gain a better understanding of inter- and intra-specific behavior and reconstruct Late Pleistocene ecosystems of California and Nevada. Radiocarbon dates exist for most of the …

Can State And Local Revenue And Expenditure Enhance Economic Growth? A Cross-State Panel Study Of Fiscal Activity, Christopher Arthur Clarke

UNLV Theses, Dissertations, Professional Papers, and Capstones

The slow economic recovery since the 2008 financial crisis and Great Recession requires state and local governments to continue to make difficult decisions concerning which taxes to raise and which expenditures to decrease in order to maintain a balanced budget. As expenditures usually raise economic growth and taxes generally hinder it, seeking the optimum combination of tax structures and expenditure options is necessary to encourage prosperity in a state. In this paper I study the effects of various expenditures and revenue combinations on growth in state personal income from 1977-2010 for 49 states and the District of Columbia. I find …

Investigation Of Storage-Phosphor Autoradiography For The Rapid Quantitative Screening Of Air Filters For Emergency Response Purposes, Athena Marie Gallardo

UNLV Theses, Dissertations, Professional Papers, and Capstones

Past nuclear accidents, such as Chernobyl, resulted in a large release of radionuclides into the atmosphere. Radiological assessment of the vicinity of the site of the incident is vital to assess the exposure levels and dose received by the population and workers. Therefore, it is critical to thoroughly understand the situation and risks associated with a particular event in a timely manner in order to properly manage the event. Current atmospheric radiological assessments of alpha emitting radioisotopes include acquiring large quantities of air samples, chemical separation of radionuclides, sample mounting, counting through alpha spectrometry, and analysis of the data. The …

The Effect Of Scaffolded Strategies On Content Learning In A Designed Science Cyberlearning Environment, Cynthia Lee Kern

UNLV Theses, Dissertations, Professional Papers, and Capstones

Scientific inscriptions--graphs, diagrams, and data--and argumentation are integral to generating and communicating scientific understanding. Scientific inscriptions and argumentation are also important to learning science. However, previous research has indicated that learners struggle to understand and learn science content represented in inscriptions. Furthermore, when learners engage in argumentation, learning science content becomes secondary to the learning of argumentation skills. This design-based research study is nested within the larger effort to inform the design and development of the 5-Featured Dynamic Inquiry Enterprise design framework (5-DIE) for cyberlearning environments and to advance theory associated with the difficulties learners have with scientific inscriptions and …

Investigating The Effects Of A Sentence Writing Strategy And A Self-Monitoring Procedure On The Writing Performance Of Students With Autism Spectrum Disorder, David Rago

UNLV Theses, Dissertations, Professional Papers, and Capstones

Writing is a tool students with autism spectrum disorder (ASD) can use to communicate and interact with other people socially and professionally. Strong writing skills may lead to social and economic success, as well as a sense of self-empowerment. Unfortunately, there is very little research related to the use of sentence-writing strategies and self-monitoring procedures to improve the writing performance of adolescent students with ASD. Thus, this study was designed to examine the effects of a sentence-writing strategy and a self-monitoring procedure on the writing performance of adolescents with ASD.

The study included five participants. These participants attended the same …

Assessing Revenue Managers' Level Of Trust In Information Systems: An Exploratory Study Of Las Vegas Casino Resorts, Landon Taylor Shores

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study examined revenue managers' level of trust in their revenue management system (RMS) at Las Vegas casino resorts. The study utilized an e-mail interview to measure revenue managers' attitudes about their RMS's degree of reliability and dependability, the degree to which they trust their RMS's pricing recommendations, and if a revenue manager's level of trust in technology had any effect on their likelihood of trusting their RMS.

The study invited 11 property and corporate revenue managers from Las Vegas casino resorts to participate in an e-mail interview, with nine revenue managers agreeing to participate. The main findings of the …

High-Performance, Scalable Optical Network-On-Chip Architectures, Xianfang Tan

UNLV Theses, Dissertations, Professional Papers, and Capstones

The rapid advance of technology enables a large number of processing cores to be integrated into a single chip which is called a Chip Multiprocessor (CMP) or a Multiprocessor System-on-Chip (MPSoC) design. The on-chip interconnection network, which is the communication infrastructure for these processing cores, plays a central role in a many-core system. With the continuously increasing complexity of many-core systems, traditional metallic wired electronic networks-on-chip (NoC) became a bottleneck because of the unbearable latency in data transmission and extremely high energy consumption on chip. Optical networks-on-chip (ONoC) has been proposed as a promising alternative paradigm for electronic NoC with …

Understanding Basin Specific Life History Characteristics Of Lake Mead Quagga Mussels (Dreissena Bugensis) And A Potential Treatment Using Uv Radiation In Laboratory Studies, Melissa Thaw

UNLV Theses, Dissertations, Professional Papers, and Capstones

The quagga mussel (Dreissena bugensis) is an aquatic invasive species that is spreading throughout Lake Mead and other western waterways. Unlike their native waters in Eurasia, Lake Mead exhibits year round warm temperatures, high calcium levels and a lack of natural predators, all of which are very favorable conditions for their growth and spread. Dreissena bugensis reproduce and colonize hard surfaces rapidly, where they filter large amounts of water. They disrupt the aquatic food chain and interfere with infrastructure that is exposed to lake water. There is an urgent need to understand Dreissena bugensis life history characteristics within this new …

Effective Conservation Of A Rare Amphibian Through Partnerships, Michael Burroughs, Christiana Manville

American Association for the Advancement of Science Pacific Conference

• Local conservation efforts can improve the status of sensitive species, particularly narrow endemics.
• Cooperative, voluntary conservation may benefit some species more than listing.
• Management through regulations should be considered if non-regulatory efforts fail.
• Maintain and monitor compatible land uses.

Using Online Data Sets To Teach K-12 Students And Teachers About Climate Change, Larry Rudd

American Association for the Advancement of Science Pacific Conference

• Description of project

• Data-based Activities

• Inservice Teacher Use and Feedback

• Preservice Teacher Use and Feedback

• Future Work

• Conclusions

• Discussion

Reaching Nevada's Teachers Through Nsf Epscor Climate Change Science Institutes, Aubrey Mae Bonde, Larry Rudd, Paul Buck, Juan Mcalister

American Association for the Advancement of Science Pacific Conference

Education Component Goals

• Increase the number and quality of STEM educators and STEM professionals in the region and country
• Develop institutional partnerships that support exemplary practices and policies in STEM education
• Implement inquiry activities focusing on facets of climate change science and promote interest in STEM career pathways and higher education

Integrated Stem Model-Eliciting Activities: Developing 21st Century Thinkers, Micah Stohlmann

American Association for the Advancement of Science Pacific Conference

Studies have shown that integrating math and science makes learning more connected and relevant and has a positive impact on student attitudes and interest in school, their motivation to learn, and achievement.

Engineering is becoming more prevalent in K-12 schools and can provide great problem solving opportunities for students to learn about mathematics, science, and technology while working through the engineering design process.

Climate Change Connected Curriculum, Southern Nevada Science Teachers Association

American Association for the Advancement of Science Pacific Conference

Climate change is a complex global issue that spans many disciplines. The curriculum spans several subject areas and cuts across national standards.

Our team will focus on creating lesson plans to cover a span of two weeks; i.e. one unit on Climate Change .

The SAME concepts will be taught in the SAME week to the SAME 9th and 12th grade students; with a focus on those concepts in specific subject areas.

Gen Y-Ers As Consumers Of Good Causes: Examing Student Attitudes, Beliefs, And Behaviors On Cause Marketing, Annie Paul

American Association for the Advancement of Science Pacific Conference

1. CSR is how companies self-regulate and take accountability for their social and environmental impacts on their communities.
2. CM is how companies promote their socially responsible acts.
3. IF CM's objectives are good, does it mean Gen Y-ers view it positively?

Challenges And Successes In Exposing Community College Students To Field Work And Undergraduate Research In A New Introductory Field Biology Course At The College Of Southern Nevada, Brian C. Wainscott

American Association for the Advancement of Science Pacific Conference

Few of the College of Southern Nevada (CSN) students I interact with consider careers in field biology. When asked why, most report they do not know much about field biology because too few opportunities exist. Knowing this, and the importance of attracting students to STEM careers, I solicited input from potential employers and developed a new course called Introduction to Field Biology (BIOL 211). BIOL 211 was approved by the Nevada System of Higher Education (NSHE) during 2012 and I offered it for the first time during the spring semester of 2013. It is a 4-credit lecture/lab course that meets …

Collaborative K‐12 Outreach: K‐12 Stem And Beyond, Susan Wainscott, Fred Rauber, Xan Goodman, Samantha Godbey

American Association for the Advancement of Science Pacific Conference

Libraries' Rebel STEM Objectives

• Build personal connections with students and teachers
• Galvanize students’ interest in STEM
• Teach information literacy skills

Shipwreck With Speculator Early Modern Representations Of Risk And Gambling, David J. Hart

Occasional Papers

Charles Cotton’s Compleat Gamester, one of the best known manuals accompanying a virtual pandemic of gambling fever across early modern Europe, likens gaming to shipwreck since there are “but few Casts at Dice betwixt a rich man and a beggar,” “but few inches between [living] and drowning.” This conjunction of shipwreck and gaming recurs in early modern literature and constitutes a rhetorical topos in the sense of philosopher Hans Blumenberg. I examine several instances of this conjunction (e.g. in Cardano’s autobiography, Shakespeare’s The Tempest, Spinoza’s Theological-Political Treatise, and Joseph de la Vega’s Confusion de Confusiones) and suggest that the conjunction …

Session 4-2-A: Taking The Disorder Out Of Gambling Disorder, Denise F. Quirk, Colin M. Hodgen

International Conference on Gambling & Risk Taking

DSM‐5 Gambling Disorder

A. Persistent and recurrent problematic gambling behavior leading to clinically significant impairment or distress, as indicated by four (or more) of the following in a 12‐month period:

A. Persistent and recurrent maladaptive gambling behavior as indicated by five (or more) of the following:

Session 4-2-C: Dissociating The Roles Of Delay And Probability Discounting In Gambling Behavior, Will Shead, Emad Talisman

International Conference on Gambling & Risk Taking

Now or Later?

How would you like a gift?

Now vs. 1 week

Rewards now are worth more than later

- Delayed rewards are discounted

Session 4-1-D: The Experience Of Lotto 6/49 And The Capacity To Trust: Elements For An Anthropology Of Gambling, Jocelyn Gadbois

International Conference on Gambling & Risk Taking

Anthropologists study Lotto 6/49 as an experience.

Lévy-Bruhl tries to compare the magical beliefs of serious gamblers with the magical beliefs of individuals he refers to as the ‘‘primitives’’ (1924).

After that, Henslin studied the superstitions of St.Louis taxi drivers who play craps during their work breaks and compared them to Skinner’s pigeon (1967).

I wanted in my thesis to help anthropology to reconstruct lost knowledge regarding gambling and beliefs about magic in capitalist society.

Session 4-1-C: Social Media Gambling Games: Impact On Young People, Sally Gainsbury, Jeffrey L. Derevensky

International Conference on Gambling & Risk Taking

Key concerns for youth

Normalisation & positive impressions of gambling

Misrepresenting the odds of winning

Encouraging transition to real money gambling

Development of problems

Session 4-1-A: The Problem Gambling Center, Robert Hunter

International Conference on Gambling & Risk Taking

Provides information and statistics on the Problem Gambling Center.

Session 4-1-B: Casino Legalization As An Evolutionary Game -- Who Will Be The Next?, Miao He

International Conference on Gambling & Risk Taking

Introduction

For the community/governor who has a strong preposition to casino gaming (e.g., gambler, religious group), his/her motivation to participate/accept casino legalization is

∆P_AE_A+t_A>c_î and ∆P_B(R_B+E_B)+t_B>c_Ĵ

What’s the motivation for the other community/governors who are neutral to casino gaming?

How the casino legalization process evolved and finally reached the equilibrium state?

Session 4-1-D: The Ant And The Grasshopper: Western Casino Operators In Macau And Singapore, Sudhir Kale

International Conference on Gambling & Risk Taking

Objectives

Understand the impact of market conditions and managerial orientation on employee satisfaction, organizational identification, and service quality in Macau/ Singapore Casino Industry.

Highlight long-term adverse impact of poor service quality on market share and profitability.

Provide guidelines for action.

Session 3-4-A: Public Opinion And Problem Gambling, Don Feeney

International Conference on Gambling & Risk Taking

What do we need to know?

How does the public perceive addiction?

Do they stigmatize addiction?

Do they recognize gambling addiction?

Do they understand the causes?

Do they understand the solutions?

Do they know where to go for help?

Do they know preventative factors?

What are they willing to do?

What messages are credible and appealing?

Session 3-4-B: Evaluating The Performance Of Macao’S Gaming Industry, Day-Yang Liu

International Conference on Gambling & Risk Taking

The purpose of research

The stringently competitive nature of the casino entertainment market in the Macao necessitates that managers fully utilize knowledge expertise to increase efficiency in operations management.

Therefore, this study employs data envelopment analysis (DEA) model to estimate the efficiency and productivity of the casino entertainment industry in Macao.

Session 3-3-B: The Interplay Between Law, Development And Spillover Effects Of Casino Gaming: Theory And The Asian Evidences, Ricardo Chi Sen Siu

International Conference on Gambling & Risk Taking

Taking into consideration of the unique features and practice of casino gaming, the significance of law in the development of this industry, and the onging interactions between law, the industry’s succeeding performance and its spillover effects are generalized and illustrated in this paper. Based on the rationales of law and economics, and the institutional approach to economic analysis, a functional model is constructed to depict the related interplaying forces and the development of casino gaming. In principle, it is shown that business scope and scale of casino gaming is largely defined by law on one hand, and the revisions of …

Session 3-3-A: An Improved Pathways Development Model Of Problem Gambling: A Summary Of 11 Studies In Hong Kong And Macau, Amy Chiu Sau Lam, Alice Chan Ying Ying, Chi Chuen Chan

International Conference on Gambling & Risk Taking

Introduction

The rationale of this study came from a casual meeting of our supervisor Dr. Chan Chi Chuen and Professor Blaszczynski on a bus after the 2009 Reno conference.

On the bus, C. C. promised Mr. Blaszczynski that he would validate the pathways model in Hong Kong and Macau. And in the next 5 years, Dr. C.C. Chan and his students conducted 11 research projects on problem gambling in Hong Kong and Macau.

Purposes of current study

• To arrive on a summary finding from 11 studies on problem gambling
• To validate the pathways development model proposed by Blaszczynski & Nower …