Digital Commons Network^™

Compulsory Water Fluoridation: Justifiable Public Health Benefit Or Human Experimental Research Without Informed Consent?, Rita Barnett-Rose

William & Mary Environmental Law and Policy Review

No abstract provided.

There May Not Always Be More Fish In The Sea: Why Noaa’S Restrictions Do Not Violate The Magnuson-Stevens Act, Lindsey Nicolai

William & Mary Environmental Law and Policy Review

No abstract provided.

Hypothesis Testing Using Spatially Dependent Heavy-Tailed Multisensor Data, Arun Subramanian

Dissertations - ALL

The detection of spatially dependent heavy-tailed signals is considered in this dissertation. While the central limit theorem, and its implication of asymptotic normality of interacting random processes, is generally useful for the theoretical characterization of a wide variety of natural and man-made signals, sensor data from many different applications, in fact, are characterized by non-Gaussian distributions. A common characteristic observed in non-Gaussian data is the presence of heavy-tails or fat tails. For such data, the probability density function (p.d.f.) of extreme values decay at a slower-than-exponential rate, implying that extreme events occur with greater probability. When these events are observed …

Morphometric Assessment Of The Internal Auditory Canal For Sex Determination In Subadults Using Cone Beam Computed Tomography (Cbct), Saoly Benson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study reports on the use of three methods for sex determination in subadults using the petrous portion of the temporal bone. The purpose of this study was to validate and refine two previously published methods of sex determination for the internal auditory canal as well as to develop a novel method. The sample was comprised of 276 cone beam computed tomography (CBCT) scans of a population of subadults age 6-24 (165 females, 111 males) divided into 5 age groups for analysis: Group 1 (age 6-10), Group 2 (age 11-13), Group 3 (age 14-16), Group 4 (age 17-19), and Group …

Keeping In Touch: Exchange As An Adaptive Strategy In Southern Nevada, Timothy Joshua Ferguson

UNLV Theses, Dissertations, Professional Papers, and Capstones

Archaeologists have always wondered about the extent of vessel movement in the American Southwest. Identifying vessel movement allows for the study of social interactions across a region and the role of ceramics in the adaptive processes of agriculturalists living in marginal, highly variable environments. In many instances, exchange may act as a way to reduce the risk of resource shortfalls by creating social ties in other areas. This research investigated the changing risk reduction strategies of households in the lowland Virgin region of southern Nevada by using geochemical methods to trace the exchange of locally produced pottery. It was hypothesized …

Modeling And Analysis Of Pedestrian Flows, Romesh Khaddar

UNLV Theses, Dissertations, Professional Papers, and Capstones

According to the Traveler Opinion and Perception Survey of 2005, about 107.4 million Americans regularly use walking as a mode of transport during their commute, which amounts for 51% of the total American population. In 2009, 4092 pedestrian fatalities were reported nationwide, out of 59,000 pedestrian crashes. This amounts for 12% of the fatalities in the total traffic accidents recorded, and shows an over-representation of pedestrians incidents. Thus, it is imperative to understand the causes behind such statistics, and conduct a comprehensive research on pedestrian walking behavior and their interaction with surroundings.

A lot of researches on pedestrian flows have …

Global Climate Change: The Political Impact Of Global Warming On Developing Countries. The Case Studies Of Egypt And Oman, Eugene Thomas O'Neal

UNLV Theses, Dissertations, Professional Papers, and Capstones

The discourse of climate change has become important in the field of political science, as well as in the policy-making community. Climate change has become a political phenomenon that has and will greatly impact political stability regionally and globally. Using the ecological security theory as a framework, I explored the relationship between climate change and political stability in developing countries.

This study utilizes both qualitative and quantitative analyses to investigate the relationship between climate change and its effects on political volatility in developing countries. Using regression models, the author examined all non-OECD countries (140 countries) and their relationship to political …

Subalklaine Volcanism In The Eastern Basin And Range Province: Examples From The Miocene Mccullough Range Volcanic Field And The Pliocene To Holocene Black Rock Desert Volcanic Field, Racheal Leighann Johnsen

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation is composed of three papers that apply geologic mapping, whole rock geochemical and isotopic analysis, and mineral chemistry to describe two large, long-lived (~6 million years), and compositionally heterogeneous volcanic fields and posit sources of the rock types present in each. These fields are the McCullough Range in southern Nevada, which was a locus of volcanic activity from ~19 - 12 Ma and the Black Rock Desert volcanic field in west-central Utah, which began forming at ~6 Ma and is still active today, with the most recent eruption occurring ~720 years ago.

Chapter Two is composed of a …

New Early Miocene 40ar/39ar Ages For Nakwai, Northwest Kenya, Africa, And Paleontological Analysis Of Meroehyrax Kyongoi Dentition, Dawn Elena Reynoso

UNLV Theses, Dissertations, Professional Papers, and Capstones

Nakwai is a fossiliferous region in the Turkana Basin of northwestern Kenya. Until recently the only ages for the Nakwai formation were based on biostratigraphic correlation with Losodok; a late Oligocene site located to the north of Nakwai. The new 40Ar/39Ar ages in this study range from 23 Ma to 15 Ma and constrain the upper portions of the Nakwai section to the early Miocene. These ages make it the only securely dated fossil locality in the region that represents the earliest Miocene; all of the other early Miocene fossil localities date back to ~20 Ma or younger. The time …

Designing A Biomimetic Testing Platform For Actuators In A Series-Elastic Co-Contraction System, Ryan Tyler Schroeder

UNLV Theses, Dissertations, Professional Papers, and Capstones

Actuators determine the performance of robotic systems at the most intimate of levels. As a result, much work has been done to assess the performance of different actuator systems. However, biomimetics has not previously been utilized as a pretext for tuning a series elastic actuator system with the purpose of designing an empirical testing platform. Thus, an artificial muscle tendon system has been developed in order to assess the performance of two distinct actuator types: (1) direct current electromagnetic motors and (2) ultrasonic rotary piezoelectric motors. Because the design of the system takes advantage of biomimetic operating principles such as …

Influence Of Social Media In Stages Of Democratization, Ira David Sternberg

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Internet and social media have become a pervasive part of our global environment over the last few decades, utilized primarily for commerce, communication, and entertainment. The last several years, however, have seen an increase in the application of social media in political discourse and activities, primarily in developed democracies and autocracies. Does that mean social media can influence democratic transition and consolidation in the 21st century? Are the examples of the Green Movement in 2009 and the Arab Spring in 2011 a validation of social media in service to democracy, or is social media also a tool for surveillance …

Factor Structure Of The Cpt-Ii, Mary Vertinski

UNLV Theses, Dissertations, Professional Papers, and Capstones

The current study investigates the factor structure of the Conners' Continuous Performance Test-II (CPT-II) in four pediatric samples of participants: (a) patients with traumatic brain injury, (b) healthy controls, (c) patients with various clinical diagnoses, and (d) all of the previously mentioned subjects combined. Confirmatory factor analyses (CFA) were used to investigate a one-, three- and four-factor model fit of the data. None of the models examined were an adequate fit for the data; however, it appears that the four-factor model seemed to be the best fitting of the models examined. Failure to find reasonably adequate fit precluded further analyses.

Impact Of A Grade Contract Model In A College Composition Course: A Multiple Case Study, Nayelee Villanueva

UNLV Theses, Dissertations, Professional Papers, and Capstones

Due to the complex nature of assessment in critical pedagogy practices, continued research is necessary in order to investigate the constantly evolving nature of education and the way we come to know how people learn. To research assessment in the critical classroom requires both instructor and students. This qualitative multiple case study investigated impacts of a grading contract as a form of assessment on student writing in a Basic Writing composition course. This study examined the impacts of a grade contract on students' writing, motivation for writing, revision practices, authorship and expectations of a Basic Writing composition course. Through a …

Predicted Performance Of A Skytherm North, A Highly Insulated Building Envelope System And A Frost Protected Shallow Foundation, Kitrina Ann Stratton

UNLV Theses, Dissertations, Professional Papers, and Capstones

How do you design a durable, sustainable, and financeable Net Zero Energy house for a cold weather climate using little or no external energy that is also affordable? Reviewing all of the factors that would influence the design and materials selection of an appropriate response to the issues, the perfect system for housing people, whether it is in response to affordability, durability, comfort, cultural sensitivity, appearance or being locally appropriate, is using some kind of straw bale construction system with an integrated frost protected shallow foundation and a SkyTherm North design.

The focus and intention of this research is to …

Decontamination Protocols For Watercraft And Wildland Firefighting Equipment In Preventing The Spread Of Invasive Quagga (Dreissena Rostriformis Bugensis) And Zebra (Dreissena Polymorpha) Mussels, Ashlie Watters

UNLV Theses, Dissertations, Professional Papers, and Capstones

Quagga and zebra mussels (Dreissena rostriformis bugensis and Dreissena polymorpha) are two invasive species introduced via ballast water discharged by large oceanic cargo ships to the North American Great Lakes in the late 1980s. Once established, the mussels spread quickly. In January 2007, D. rostriformis bugensis was discovered in Lake Mead, NV-AZ, and in that same year, mussels were confirmed further south on the Colorado River in Lakes Mojave and Havasu. Dreissenids clog water intake pipes, water filtration systems, and electric generating plants. The mussels also ruin boat motors, damage recreational equipment, and once established in the reservoir, routine maintenance …

Chinese Outbound Tourists Food Consumption In The U.S.: An Extension Of The Theory Of Planned Behavior, Kaiyang Wu

UNLV Theses, Dissertations, Professional Papers, and Capstones

Although Chinese outbound tourists made enormous economic contribution to the U.S. restaurant industry, they seem to have the tendency to consume Chinese cuisine solely during their international trips. This study applies structural equation modeling (SEM) to evaluate different behavioral beliefs' impact on the intentions of Chinese outbound tourist unfamiliar ethnic food consumption in the U.S. Additionally, this research combines the Theory of Planned Behavior (TPB) and food neophobia, a food-related personality trait to better explain Chinese outbound tourists' food rejection behavior in the U.S.

Results of this study showed safety concern, acceptance of table manners, perceived communication gap and food …

Induction Of Differentiation Of Dental Pulp-Derived Mesenchymal Stem Cells (Dpsc), Aubrey Young

UNLV Theses, Dissertations, Professional Papers, and Capstones

Mesenchymal stem cells are derived from a variety of human tissues and are being bioengineered and studied for possible uses in the advancement of medicine. Recent efforts are being focused on Dental Pulp Stem Cells (DPSC's) due to the accessibility of this tissue. Many factors influence DPSC quality and quantity, including the specific methods used to isolate, collect, concentrate, and store these isolates once they are removed. Ancillary factors, such as the choice of media, the selection of early versus late passage cells, and cryopreservation techniques may also influence the differentiation potential and proliferative capacity of DPSC isolates.

The objective …

Analysis Of Lithic Assemblages From Virgin Branch Puebloan Sites On The Shivwits Plateau, Thomas Carl Wambach

UNLV Theses, Dissertations, Professional Papers, and Capstones

Flaked stone technology, as with any utilitarian technology, is studied by archaeologists for a number of reasons. Often lithics are studied to understand the activities of a prehistoric group. Everything from the final product to the waste material can, when recovered in suitable amounts, reflect the conscious decisions of its creator. Understanding this helps to embed all stages of stone tool (lithic) use into aspects of human behavior and in understanding the organization of technology.

The Virgin Branch Puebloans are the westernmost sub-branch of the Ancestral Puebloan culture of the American Southwest. While some of their expanse has been studied …

A Model For Meeting And Event Venues To Implement Green Practices, Justine Clewer

UNLV Theses, Dissertations, Professional Papers, and Capstones

In 2007 green meetings were ranked as the third most anticipated trend by Event Solutions magazine’s survey of 1,350 event professionals, however by 2011 it was an emerging trend (Goldblatt, 2012). Today, meeting and event planners are increasingly including clauses in their contracts with venues pertaining to green practices, and are willing to look elsewhere if a venue does not agree to partake in the green initiatives. For venues the failure to “go green” can mean a substantial loss of revenue. Nonetheless, many businesses are hesitant to engage in green (sustainable) practices, because they are not properly educated on the …

Jellyfish, Forage Fish, And The World's Major Fisheries, Kelly L. Robinson, James J. Ruzicka, Mary Beth Decker, Richard D. Brodeur, Frank J. Hernandez, Javier Quiñones, E. Marcelo Acha, Shin-Ichi Uye, Hermes Mianzan, William M. Graham

Faculty Publications

A majority of the world’s largest net-based fisheries target planktivorous forage fish that serve as a critical trophic link between the plankton and upper-level consumers such as large predatory fishes, seabirds, and marine mammals. Because the plankton production that drives forage fish also drives jellyfish production, these taxa often overlap in space, time, and diet in coastal ecosystems. This overlap likely leads to predatory and competitive interactions, as jellyfish are effective predators of fish early life stages and zooplankton. The trophic interplay between these groups is made more complex by the harvest of forage fish, which presumably releases jellyfish from …

Lawyers And Sawyers: Venetian Forest Law And The Conquest Of Terraferma (1350-1476), Michael S. Beaudoin

Boise State University Theses and Dissertations

Throughout the fourteenth and fifteenth centuries, Venice played a direct role in shaping the future of Northeastern Italy. The standing scholarship views Venetian involvement on the mainland as either an abandonment of the city’s maritime tradition or as a buffer zone against rival powers, like Milan. Venice’s western mainland empire, Terraferma, provided Venice with many commercial products that the Eastern Mediterranean did not. One mainland product, timber, was a central focus of Venetian expansion into Terraferma and has thus far been neglected by historians. This thesis argues that the Venetian Republic manipulated mainland legal traditions in order to obtain …

Printing Functional Electronic Circuits And Components, Ahmed Tausif Aijazi

Dissertations

The purpose of this study was to investigate the challenges in printing reliable multilayer flexible circuits, devices and components. Gravure was used as the primary printing process for this work, but due to some limitations of gravure, other printing methods were also investigated. At first a systematic study was done to determine the optimum parameters for the gravure printing of sub 50 micron lines. Commercially available silver nanoparticle inks were printed on a lab scale gravure printer, Accupress®. The highest resolution line that was electrically conductive was 36μm wide. The 9μm, 18μm and 27μm lines were printed but were not …

Magnetic Nickel Nanoparticles: Synthesis, Environmental Lmplications And Potential Role As Drug Carriers, Setare Tahmasebi Nick

Dissertations

The design and synthesis of well-defined magnetic particles with nanoscale dimensions is opening new avenues in understanding their fundamental chemical and physical properties. Our work describes a novel facile procedure for the synthesis of homogenous isotropic and anisotropic magnetic nickel nanoparticles. These nanoparticles were produced using a wet-chemical process and characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), selected-area electron diffraction (SAED), powder x-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and thermogravimetric analysis (TGA). Magnetic measurements were acquired using a superconducting quantum interference device (SQUID) magnetometer. While there is significant interest in using magnetic nanoparticles for biological …

Executive Function In Early Childhood: Qualitative And Quantitative Patterns Of Development Among Students Within A Montessori Classroom, Ashley Darcy

Dissertations, Theses and Capstone Projects (Full IR Collection)

This mixed methodology study observed five executive function components (working memory, attention, planning, cognitive flexibility, and inhibitory control) in a Montessori preschool environment for three to five year olds. The purpose of the study was to understand patterns of development for three, four, and five year olds in a natural environment. There were five findings found after analysis: 1) a cluster of components of working memory/planning/attention, 2) patterns of frequency of components, 3) the role of interest in EF components, 4) patterns within each of the five components and 5) patterns of data triangulation between the parent, teacher, and researcher. …

Nomination To The National Register Of Historical Places: Warden's Residence, Mcneil Island Penitentiary, Washington, Ann M. Burkly

Dissertations, Theses and Capstone Projects (Full IR Collection)

This Master’s thesis nominates the Warden’s Residence of the former Penitentiary at McNeil Island, Washington, to the National Register of Historic Places. The Warden’s House is a superb 1932 French Renaissance Eclectic design, that embodies distinctive characteristics of a method of construction, convict labor, and represents the work of a master architect, George Gove of the prominent Northwest architectural firm, “Heath, Gove, & Bell.” The firm also designed the National Register of Historic Places’ sites of the Tacoma Mausoleum, Paradise Lodge at Mt. Rainier, and Stadium High School in Tacoma. As the creation of George Gove, the communicating architect for …

The Politics Of Happiness In The Workplace, Jacob Shay Sherretts

Political Science

Although the realm of political theory has often focused on what makes an individual happy, there is a lack of analysis on what factors within a career environment best serve to increase an individual’s satisfaction. By comparing indicators such as the region a workplace is located in, the ability of an individual to pursue career goals and the amount of autonomy an employee is allowed, a better understanding can be made on what conditions are optimal for satisfaction in the workplace. After these factors are compared, the findings are then analyzed under the lens of respected political thinkers in order …

Opportunity And Access: High School Coursework And Its Impact On Student Self-Perceptions, Cassie K. Ferguson

Dissertations, Masters Theses, Capstones, and Culminating Projects

The skills taught and the courses offered to the United States’ public high school students have changed drastically over the past 20 years. Career-based electives have given way to college preparatory classes. Gone are the auto shops, construction and home economics classes—courses that many view as outdated, dangerous or unnecessary at the high school level. Arts and humanities-based courses have also disappeared; even courses that can train students to enter the robust fields of healthcare or technology are diminishing (Dare, 2006).

The communities in which many of these courses are disappearing are often diverse and economically disadvantaged. This “second-generation segregation” …

Somewhere Amongst The Ashes, Keith Rebec

All NMU Master's Theses

ABSTRACT

SOMEWHERE AMONGST THE ASHES

By

Keith Rebec

This story collection explores how human beings deal with loss. Whether the loss stems from death, the loss of personal innocence, or the loss of love, the characters within are forced to make decisions that he or she wouldn't make if given the choice. Some of the characters, in an effort to prevent the same or a similar type of loss from reoccurring in their lives, desperately seek ways to avoid the issues altogether, which further complicates their troubles. Others, unbeknownst to their impending loss, must make split second decisions that will …

Prognostic Value Of Elevated Serum Ceruloplasmin Levels In Patients With Heart Failure, Muhammad Hammadah, Yiying Fan, Yuping Wu, Stanley L. Hazen, W.H. Wilson Tang

Mathematics and Statistics Faculty Publications

Background: Ceruloplasmin (Cp) is a copper-binding acute-phase protein that is increased in inflammatory states and deficient in Wilson's disease. Recent studies demonstrate that increased levels of Cp are associated with increased risk of developing heart failure. Our objective was to test the hypothesis that serum Cp provides incremental and independent prediction of survival in stable patients with heart failure. Methods and Results: We measured serum Cp levels in 890 patients with stable heart failure undergoing elective cardiac evaluation that included coronary angiography. We examined the role of Cp levels in predicting survival over 5 years of follow-up. Mean Cp level …

Studies To Characterize Heavy Metal Content And Migration From Recycled Polyethyleneterephthalate, Michael John-Ross Whitt

Master's Theses

Packaging Materials account for 31% of the world’s municipal solid waste. Agencies like the Environmental Protection Agency (EPA) and the Agency for Toxic Substances and Disease Registry (ATSDR) are pushing for the increased use of recycled thermoplastic materials. Polyethylene terephthalate (PET) is a commonly recycled thermoplastic which is used to package ready-to-eat fruits and vegetables. Most recycled polyethylene terephthalate (RPET) packaging materials contain heavy metal catalysts, the most common being antimony. The recent increased use of recycled plastic materials has been suspected as the source of increased human heavy metal exposure. In this study, cadmium, chromium, nickel, lead and antimony …