Digital Commons Network^™

What Is The Best Residential Roof Assembly For The U.S. Desert Southwest, With Respect To Cost, Energy Efficiency And Embodied Energy Concerns, John Joseph Carroll

UNLV Theses, Dissertations, Professional Papers, and Capstones

The climate is continually changing for the worse as there are poor decisions being made in the rapidly constructed built environment. In an effort to reduce the impact on the built environment, the typical residential roof assemblies that are currently being used in the U.S. desert southwest are not the best for the environment. Through research and simulations, this

paper compares several residential roof assemblies to the standard code compliant construction and provides cost breakdowns of simple payback and cost of save energy for each of the simulated systems. A case study was also designed for the U.S. Department of …

Electrocoagulation For Oil And Grease Wastewater Treatment Using Aluminum Electrodes., Hisham El-Etriby, Kamal Radwan, Karim Taha

Mansoura Engineering Journal

Batch electrocoagulation (EC) experiments were carried out to evaluate the removal of COD and O&G from wastewater using aluminum electrodes. The effects of operating parameters such as current intensity, initial COD concentration, contact time and NaCl concentration on COD and O&G removal efficiency had been investigated. It was found that increasing current intensity increased COD and O&G removal efficiency. Initial COD concentration had a little effect on removal efficiencies. Results showed that the best performance was obtained using aluminum electrode at a current intensity of 1.3 Ampere and 11.6 volt in 15 min contact time for 1500 mg/L initial COD …

Numerical Simulation Of Groundwater Flow And Contaminant Transport In The Quaternary Aquifer In 10th Of Ramadan City Area, East Delta, Egypt., Ahmed Al-Nimer, Mohamed Gad, Enas Hussein

Mansoura Engineering Journal

The establishment of new communities and land reclamation projects in the Egyptian desert areas is one of the most important national targets. One of these areas is the 10th of Ramadan city. The main goal of the study is concerned with delineation of groundwater contaminants plume in the future. The results show that; the ions concentration of most samples from the oxidation ponds resources contain concentrations of Al3+, Cr2+, Fe2+, Ni2+ and Sr2+ exceeding the acceptable limit of WHO (1996) standards. Also, most of the groundwater samples are polluted with Al3+ and Fe2+ and Sr2+ ions. The infiltration from the …

Equity And Excellence: The Story Of Lake Shore Community High School's Quest For Racial Justice In Education, Marcus Campbell

Dissertations

Institutional racism is integral to U.S. social structure, including the public schools. Instituting a limited high school detracking program as a strategy to deal with racial achievement disparities faced strong community resistance. Leadership and a perfect storm of social and political factors made successful implementation of a detracking initiative possible. School community leaders and staff were interviewed about their experiences of systemic change to further access for students of color to honors classes. Results suggest some leadership qualities and characteristics that facilitated the change; the external factors that contributed to the successful change for racial equity are also detailed.

Teaching English As A Foreign Language: A Multicultural Perspective, Nouf Ali Alotaibi

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This portfolio is a compilation of the author’s beliefs and practices of what constitutes effective second language teaching. It is based on the author’s teaching philosophy and the work has been done during two years of study at the Master of Second Language Teaching (MSLT) program. The teaching philosophy centers on how to implement communication inside the language classroom, develop literacy, integrate culture teaching into language instruction, and how to use technology to facilitate language learning and teaching. The teaching philosophy is followed by three artifacts, which review the literature addressing different topics on language, literacy, and culture. The language …

High-Speed Rail And Equine Issues, Peter J. Haas, Allie Scrivener

Mineta Transportation Institute

Community concerns have been raised about the possible negative impacts of high-speed rail (HSR) service on equestrian areas. Although much is known about the impact of aircraft noise on wild and domestic animals, relatively little information is available on the potential impact of HSR service on equine populations. This study will explore possible conflicts between HSR construction and operations in areas used for equestrian ranching, recreation, and related activities, and identify geographic areas where such conflicts could occur.

A Methodology For Evaluating The Strength Of Cued-Recall Graphical Passwords, Mohammad N. Alshehri

Theses and Dissertations

With the revolution of computers, in particular smartphones, people use them to deal with sensitive information such as making online payments, online banking, managing medical records, and communicating with others via messages, emails, and social media. Consequently, computers and smartphones have become a storehouse of private information that must be protected from getting in the hands of unauthorized people. Verifying the identity of a computer’s users before granting access to them is one option of protection. Textual passwords and PINs are commonly used for authentication on standalone PCs, and smartphones. Users create problems, such as using easy to guess passwords …

California Ethnobotany: A Bibliography, James P. Smith Jr

Botanical Studies

No abstract provided.

Bowl Game: Education 101, Georgia Southern University

Athletics: News & Publications

• Bowl Game: Education 101

Using A Personalized Machine Learning Approach To Detect Stolen Phones, Huizhong Hu

Theses and Dissertations

With the increasing number of smartphone penetration, mining smartphone data that make smartphone smarter became a top research area, there are a lot of event data which we can use to predict behavior or detect anomalies. The privacy disclosure caused by stolen or lost phones becomes an increasingly difficult problem that cannot be ignored. So we design an anomaly detection system by mining patterns to detect stolen phones. We use a pattern mining algorithm to abstract patterns from user past behavior, then construct a personalized model and use a scoring function and threshold setting strategy to detect stolen events. Moreover, …

Tiers 1, 2 & 3 Intervention: Sleep And School, Katherine M. Kidwell, Maren Hankey, Donna M. Flores, Tori R. Van Dyk, Alyssa Lundahl, Timothy D. Nelson

Department of Special Education and Communication Disorders: Faculty Publications

Conclusion

Educators need to take a more active role in identifying and addressing sleep related issues in students in order to maximize their learning potential and to minimize the numerous negative outcomes of sub-optimal sleep and sleep disorders. Specifically, school personnel can educate parents on the importance of sleep and advocate for later school start times for middle and high school students. In addition, when symptoms persist, educators can make recommendations to parents as a part of the SAT and MDT. See Figure 4 for recommendations for schools.

Improving Establishment Of Seeded Buffalograss, Luqi Li

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Buffalograss [Buchloë dactyloides (Nutt.) Engelm.] is a warm-season grass native to the North American Great Plains. Buffalograss is drought resistant, heat resistant and cold tolerant, and thus is well-adapted to many uses in areas that require low maintenance or erosion control. Since buffalograss is slow-growing, one challenge of establishing seeded buffalograss is to maximize seedling maturation and establishment before winter. We evaluated dormant seeding buffalograss in late fall and winter, when germination is not expected until soils warm in spring. We successfully dormant seeded ‘Sundancer’, ‘Bowie’ or ‘Cody’ buffalograss at 146 kg ha^-1 from late November though …

Changes On Cran, Kurt Hornik, Achim Zeileis

The R Journal

New packages in CRAN task views

New contributed packages

Other changes

On Reliability Of Smart Grid Neighborhood Area Networks, Shengjie Xu, Yi Qian, Rose Qingyang Hu

Department of Electrical and Computer Engineering: Faculty Publications

With the integration of the advanced computing and communication technologies, smart grid system is dedicated to enhance the efficiency and the reliability of future power systems greatly through renewable energy resources, as well as distributed communication intelligence and demand response. Along with advanced features of smart grid, the reliability of smart grid communication system emerges to be a critical issue, since millions of smart devices are interconnected through communication networks throughout critical power facilities, which has an immediate and direct impact on the reliability of the entire power infrastructure. In this paper, we present a comprehensive survey of reliability issues …

Expansion Of The Chlorovirus Genus By Studies On Virus Natural History And Chlorella Host Metabolism, Cristian F. Quispe

School of Biological Sciences: Dissertations, Theses, and Student Research

Inland waters cover about 2.5 percent of our planet and harbor huge numbers of known and unknown microorganisms including viruses. Viruses likely play dynamic, albeit largely undocumented roles in regulating microbial communities and in recycling nutrients in the ecosystem. Phycodnaviruses are a genetically diverse, yet morphologically similar, group of large dsDNA-containing viruses (160- to 560-kb) that inhabit aquatic environments. Members of the genus Chlorovirus are common in freshwater. They replicate in eukaryotic, single-celled, chlorella-like green algae that normally exist as endosymbionts of protists in nature. Very little is known about the natural history of the chloroviruses and how they achieve …

Landslide: The 1984 Presidential Election, Colin J. Newton

Theses and Dissertations

The thesis provides an in depth historical observation of the events that transpired during the 1984 presidential campaign, which is significant because of its outcome, the largest electoral victory by any presidential candidate. The scope of the research is January 1984 to November 1984. The thesis provides insight into the Democratic primaries and the general election, focusing on the strategies of both campaigns. It identifies the many factors that led to Reagan’s landslide victory.

The overall purpose of the thesis is to provide a comprehensive picture of both campaigns. The story of the 1984 presidential election is told utilizing memoirs, …

Enhancing Academic Achievement And Satisfaction By Flipping The Teacher Preparation Classroom, Rene R. Zuniga

Theses and Dissertations

This study compared flipped classrooms versus online courses to study the effects of the two instructional methodologies on student achievement and satisfaction in an undergraduate Introduction to Education, EDUC 1301, course. Students self-matriculated in either traditional EDUC 1301 courses which were flipped or in EDUC 1301 online courses. Students' final grades were used to assess student achievement in both teaching methodologies. An end-of-course student evaluation of instructor performance was used to assess students' satisfaction in the courses. A casual comparative research design was used to examine the effectiveness of both teaching methodologies. There was no differences between the two instructional …

Predicting Outcomes In Investment Treaty Arbitration, Susan D. Franck, Lindsey E. Wylie

Duke Law Journal

Crafting appropriate dispute settlement processes is challenging for any conflict-management system, particularly for politically sensitive international economic law disputes. As the United States negotiates investment treaties with Asian and European countries, the terms of dispute settlement have become contentious. There is a vigorous debate about whether investment treaty arbitration (ITA) is an appropriate dispute settlement mechanism. While some sing the praises of ITA, others offer a spirited critique. Some critics claim that ITA is biased against states, while others suggest ITA is predictable but unfair due to factors like arbitrator identity or venue. Using data from 159 final cases derived …

Motherhood As Contested Ideological Terrain: Essentialist And Queer Discourses Of Motherhood At Play In Female–Female Co-Mothers’ Talk, Elizabeth A. Suter, Leah M. Seurer, Stephanie Webb, Brian Grewe Jr., Jody Koenig Kellas

Department of Communication Studies: Faculty Publications

Framed by relational dialectics theory (Baxter), this investigation considered the meaning(s) of motherhood in female–female co-motherhood. Analysis identified two competing discourses: (1) discourse of essential motherhood (DEM) and (2) discourse of queer motherhood (DQM). Speakers’ invocation of the DEM reinscribes the mainstream US cultural discourse that children can have only one authentic (i.e., biological) mother, whereas invocation of the DQM denaturalizes the DEM’s presumptions of authentic motherhood as biological, interrupts monomaternalism, destabilizes the patriarch, and troubles the equation of biological with moral motherhood. Whereas interpenetrations of the DEM and DQM were typically sites of adversarial discursive struggle, in a few …

Television Consumption And Child Obesity: Linking Children's Contemporary Television Use, Physical Activity, And Advertising To Putnam's Displacement Hypothesis, Brittany L. Altamirano

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study observed the relationship between television consumption and child obesity through the theoretical construct of Putnam’s displacement hypothesis. It did so by updating the previous research through the investigation of the displacement of both physical activity and advertisements on contemporary television platforms. The inclusion of Putnam’s displacement hypothesis was to provide a foundational framework, not found in previous literature, to study two important paradigms that were represented in previous research: 1) the displacement of physical activity; and 2) the displacement of traditional advertisement exposure.

Several trends became apparent within previous literature. Previous literature did not include an explicitly stated …

High Pressure X-~Ray Absorption Spectroscopy Studies Of Heavy-~Fermion Cerium And Uranium Compounds, Daniel Antonio

UNLV Theses, Dissertations, Professional Papers, and Capstones

Investigations into f- electron heavy-fermion materials have revealed a wide range of novel behavior. Hydrostatic pressure is a valuable "clean" non-thermal parameter that can be used to systematically study them by tuning their ground state properties. The rare earth compound CeCu2Ge2 shows an unusual two-domed region of unconventional superconductivity under pressure, similar to its isostructural counterpart CeCu2Si2. While the lower pressure dome at about 10 GPa is caused by a magnetic quantum critical point (QCP), the higher one at about 16 GPa is less well understood. Previous structural measurements have indicated that it may be caused by critical valence fluctuations, …

Inner Experience While Reading Fiction: A Descriptive Experience Sampling Exploration, Vincent Peter Brouwers

UNLV Theses, Dissertations, Professional Papers, and Capstones

Reading is ubiquitous. In Western culture, childhood education places a strong emphasis on acquiring the ability to read. Whereas many studies have examined the cognitive processes underlying reading ability, no previous studies have used a high-fidelity method of sampling inner experience to examine the direct, momentary inner experience while reading. The current study used the Descriptive Experience Sampling Method (DES) to explore the inner experience of 17 undergraduates, who had been trained in DES, while reading classical short stories. We found that participants while reading often innerly saw a visual depiction of the story, though the congruency of these depictions …

Understanding Employee Work Attitudes: An Integration Of Psychological Contract Theory And Organizational Support Theory, Wen Chang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Employee motivation and retention are critical concerns for the hospitality industry. The purpose of this study was to understand employees’ work attitudes and emotional affect through a social exchange perspective by integrating employee psychological contract theory and organizational support theory. Affective event theory provided the theoretical foundation for this study. Data was analyzed using exploratory factor analysis and path analysis. The results showed that employees’ psychological contract fulfillment was a strong predictor of their perceived organizational support. In addition, psychological contract fulfillment and perceived organizational support together explained employee affect at work as well as other work attitudes. Affect at …

Electronic Dance Music: From Deviant Subculture To Culture Industry, Christopher T. Conner

UNLV Theses, Dissertations, Professional Papers, and Capstones

Utilizing a mixed qualitative research methods design, including interviews, ethnographic field work, and analyzing historical documents, I examine the Electronic Dance Music (EDM) subculture, since its inception in the late 80s as a deviant subculture. Previous studies of raves and other music subcultures focus almost exclusively on the role of popularity in transforming the subculture. In this research, I found, in the case of EDM at least, a more complicated process in which structural factors such as mass media, public officials (politicians and law enforcement), and major music corporations played a prominent role in the transformation. Media coverage focused on …

Perceptions Toward The Value Of Higher Education For Hotel Professionals In Las Vegas: A Case Study, Gary Lee Deel

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study concerns a qualitative investigation of the views toward higher education and its importance to hospitality career success among hotel professionals in the Las Vegas, Nevada area. Existing literature supported the premise that education may be important to professional career success in several different ways, and that values concerning education may be passed from one person to another via social learning. However, the relevant theories had not previously been evaluated within the context of the hospitality industry. Professionals in reporting relationships at two Las Vegas hotels were interviewed to determine perceptions about higher education, the sources of those perceptions, …

Study Of Machine Learning Methods In Intelligent Transportation Systems, Vishal Jha

UNLV Theses, Dissertations, Professional Papers, and Capstones

Machine learning and data mining are currently hot topics of research and are applied in database, artificial intelligence, statistics, and so on to discover valuable knowledge and the patterns in big data available to users. Data mining is predominantly about processing unstructured data and extracting meaningful information from them for end users to help take business decisions. Machine learning techniques use mathematical algorithms to find a pattern or extract meaning out from big data. The popularity of such techniques in analyzing business problems has been enhanced by the arrival of big data.

The main objective of this thesis is to …

Experiencing Parental Loss During Adolescence And Factors Influencing Hospital Involvement And The Grieving Process, Vaida Kazlauskaite

UNLV Theses, Dissertations, Professional Papers, and Capstones

Experiencing the death of a loved one can be traumatic and painful to anyone. Adolescents in particular experience death in a unique way, during a time in their lives when they are developing their own autonomy and independence. Experiencing the deteriorating conditions of a terminally ill parent may affect an adolescent in many ways. However, there is relatively little research on adolescent involvement in the medical setting during a parent’s terminal illness and how this may affect the adolescent’s bereavement. This qualitative study utilized heuristic inquiry and procedures of Grounded Theory to investigate factors influencing the involvement in the hospital …

The Arab Uprisings: An Assessment Of The Roots And Implications Of Contemporary Mobilization In The Arab World, Autoosa Elizabeth Kojoori-Saatchi

UNLV Theses, Dissertations, Professional Papers, and Capstones

Much of the existing theories of mobilization appear to focus on either micro or macro level elements that lead to mobilization, very few seem to focus on fusing the two; specifically psychological dynamics with macro structural components. This dissertation seeks to synthesize the two together to explain how psychology, specifically the perception of deprivation exacerbated by heightened social interaction through technology has introduced a new element to politics in the Middle East and North, which has furthered awareness of the exploitative nature of neoliberalism and the impact that the system has on the greater Arab populace. This dissertation explains how …

Differences In Disease Reporting: An Analysis Of State Reportable Conditions And Their Relationship To The Nationally Notifiable Conditions List, Brian Labus

UNLV Theses, Dissertations, Professional Papers, and Capstones

The basis of public health surveillance is the reporting of diseases and conditions to the health department by clinicians and laboratories. In the United States, over eighty diseases and conditions of national importance (e.g., tuberculosis, syphilis, and cancer) are included on the list of Nationally Notifiable Conditions (NNC) for submission to the Centers for Disease Control and Prevention (CDC) by the states. The legal basis for disease reporting is found at the state level, where inconsistent laws may differ in terms of which conditions are reportable and their reporting process. The process by which states require the reporting of NNCs …

An Analysis Of The Financial Impact Of Changing Athletic Conference Affiliation Within The Ncaa, Christopher Parker

Doctoral Dissertations and Projects

The purpose of this causal comparative study was to provide Division I athletic programs with athletic and institutional fundraising insight when considering a change in athletic conference affiliation. The study provided descriptive data regarding athletic conference affiliation pre and post-conference change. The research evaluated if there was a significant increase in athletic and educational fundraising when changing athletic conferences. The quantitative study compared educational and athletic foundations’ IRS 990 forms for 15 NCAA Division 1 institutions that changed athletic conferences between 2012 and 2013. Data was analyzed using an ANOVA and t-tests from the institutions’ academic and athletic foundations. The …