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The Fluvial Muddy Creek Formation Near Overton, Nevada, Carl Taylor Swenberg

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Muddy Creek Formation (MCF) may represent an ancestral Colorado River deposit. To test this hypothesis, I mapped exposures of the MCF within the Virgin River Depression (VRD), a rift basin in the central Basin and Range. This is the first study to analyze fluvial MCF facies and test their viability as ancestral Colorado River deposits.

Mapping, paleocurrent analysis, conglomerate provenance, and architectural elements analysis were used in order to characterize the fluvial MCF near Overton NV. Architectural elements analysis revealed that MCF fluvial facies are most closely associated with those of a high-energy sand-bed braided river system. These results …

Chemical Weathering Of The Mafic Minerals Serpentine And Olivine In Natural Environments, Julie Lynn Baumeister

UNLV Theses, Dissertations, Professional Papers, and Capstones

Chemical weathering is a critical process that plays a key role in controlling the chemistry of natural waters, the cycling of atmospheric carbon dioxide, and the formation of soil. The weathering of silicate minerals is important because the Earth's crust is composed of approximately 92 weight percent silicate minerals. Despite an extensive literature on mineral dissolution and kinetics, relatively few studies have examined weathering of the mafic minerals serpentine and olivine, especially in a natural environment. The first chapter of this thesis provides an introduction to the minerals serpentine and olivine. The second chapter of this thesis examines the important …

Muddy Creek Formation: A Record Of Late Neogene Tectonics And Sedimentation In Southern Nevada, Thomas William Muntean

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Late Neogene Muddy Creek Formation (MCF), exposed in the vicinity of Lake Mead in southern Nevada, represents the youngest widespread Cenozoic sedimentary sequence in the region and is the focus of this study. Historically, the MCF has been largely ignored, with limited previous studies providing only regional-scale constraint on the age, stratigraphy, and mode of deposition for the formation; resulting in a data gap for our understanding of the Late Cenozoic tectonic and sedimentological evolution of southern Nevada.

From The Foreland To The Hinterland: Taphonomy Across The Cretaceous To Paleogene Sevier Retroarc Region Of Nevada, Joshua William Bonde

UNLV Theses, Dissertations, Professional Papers, and Capstones

Until 2004 very little paleobiology, let alone paleoecology, had been studied within exposures of the Sevier retro-arc foreland and hinterland, in the state of Nevada. This is due largely to poor and spotty exposure. This study focuses on taphonomic processes within three stratigraphic intervals in the foreland and hinterland of the Sevier retro-arc region, and what these taphonomic indicators reveal about the geography of the hinterland.

First, the Willow Tank Formation of southern Nevada was deposited in the foredeep of the Sevier retroarc foreland basin. This unit represents a multi-channel, aggradational, fluvial system that drained the Sevier highlands to the …

Predicting Expenditure Patterns Based On Motivations To Travel For Active Sport Tourists, Chris Brown

UNLV Theses, Dissertations, Professional Papers, and Capstones

The present study continued the line of research into general tourism motivations and expenditures by further expanding the scope into active sport tourists traveling to participate in a specific sport. In completing this research, a broad range of travel, expenditure, and motivational factors were considered. In addition, multiple regression was utilized to answer the proposed research question in an attempt to achieve a more comprehensive understanding of active sport tourists' motivations for travel and their subsequent expenditures.

Nuestras Experiencias: A Phenomenological Study Of Latina First Generation Higher Education Graduates, Diana Elizabeth Cruz

UNLV Theses, Dissertations, Professional Papers, and Capstones

A review of the literature indicates that Latinos lag behind White and

African American students in higher education degree attainment. This educational gap is of concern because Latinos are the largest minority group in the United States, and the Latino population is expected to increase in the future. Higher education degree attainment for Latinos is vital because statistics show an undeniable relationship between degree attainment and income level. In order to ensure the economic well being of Latinos, it is important that Latinos persist through university degree programs. The purpose of this qualitative study was to explore the experiences of …

Exercise And Nutrition Survey Of Nevada Air National Guard Members, Matthew Antonio Demattei

UNLV Theses, Dissertations, Professional Papers, and Capstones

One hundred seventy-three Nevada Air National Guard members voluntarily participated in this exercise science and nutrition survey-based study. The survey consisted of ten closed-ended questions; the intent of the study was to determine whether the participants were willing to attend exercise science or nutrition related classes, or if the participants were willing to instruct exercise science or nutrition classes if they possessed a degree in either field. Forty-six females, and one hundred twenty-seven males participated in this study; one hundred thirty-six of the respondents were enlisted, and thirty-seven of the respondents were officers. Participants were demographically separated by age groups …

Heat, Mass And Force Flows In Supersonic Shockwave Interactions, John Michael Dixon

UNLV Theses, Dissertations, Professional Papers, and Capstones

There is no cost effective way to deliver a payload to space and, with rising fuel prices, currently the price to travel commercially is also becoming more prohibitive to the public. During supersonic flight, compressive shock waves form around the craft which could be harnessed to deliver an additional lift on the craft. Using a series of hanging plates below a lifting wing design, the total lift generated can be increased above conventional values, while still maintaining a similar lift-to-drag ratio. Here, we study some of the flows involved in supersonic shockwave interaction. This analysis uses ANSYS Fluent Computational Fluid …

The Effects Of Salt Diapirs On The Thermal Maturity Of Surrounding Sediments In The Western Pyrenees, Spain, Nicholas Martin Downs

UNLV Theses, Dissertations, Professional Papers, and Capstones

Salt diapirs have been modeled as having a large effect on the thermal maturity of surrounding sediments as a result of the high thermal conductivity contrast between halite and other lithologies. The goal of this study was to confirm these and other theoretical predictions through sampling of three salt structures in the western Pyrenees, Spain. Stratigraphic units around these three diapirs were targeted based on their lithologies and positions relative to the diapirs. Samples were analyzed for vitrinite reflectance and quartz cementation to determine their levels of thermal maturity. Remote sensing instruments were used to attempt to measure present day …

Public Corruption For Gain In America: The Costly Consequences Of Violating Public Trust, Yvonne Atkinson Gates

UNLV Theses, Dissertations, Professional Papers, and Capstones

Several empirical analyses have explored corruption in government to determine the factors that contribute to corrupt behavior of elected officials.

This study will focus, explore, and enhance the research on the causes of public corruption among elected county commissioners by examining four domains of corruption causality: individual characteristics of elected officials, county government characteristics, county government fiscal performance, and community characteristics. This study will attempt to determine if General Strain Theory can provide a theoretical framework for understanding the causes of public corruption and, to what degree it can predict whether elected county officials will engage in corrupt behavior.

Factors Affecting Talent Development: Differences In Graduate Students Across Domains, Stephanie Hartzell

UNLV Theses, Dissertations, Professional Papers, and Capstones

There is an abundance of literature on young individuals who show early signs of talent and on older individuals who have demonstrated their abilities throughout the years. This research aims to look at those individuals who are in between, that is, graduate students who have the demonstrated potential to achieve within their fields of study. This study explored backgrounds of talented individuals in their adolescent period and their current measures of cognitive abilities. A total of 38 graduate students majoring in the areas of art (n= 12), science (n= 12), and education (n= 14) were used as examples of individuals …

Love Is Just A Word For The Last Body I'D Like To Keep Vigil Over, Robert Jagger

UNLV Theses, Dissertations, Professional Papers, and Capstones

Love is Just a Word for the Last Body I'd Like to Keep Vigil Over is a collection of poetry that was composed during my time spent at UNLV. Comprised mostly of prose poems, it was heavily influenced by the works of Richard Hugo, Robert Coover, Joshua Marie Wilkinson and several French poets who are often categorized as being members of either the Symbolist or Decadent movement. At its best, the collection attempts to invoke a sense of Joseph Cornell's boxes--odd juxtapositions of everyday items and language that create new and uncertain circumstances. Unlike Cornell's boxes, however, the poems aren't …

A Comparison Of Bias In Four Measures Of Monitoring Accuracy, Fred Kuch

UNLV Theses, Dissertations, Professional Papers, and Capstones

Typically in calibration research, subjects perform a task and make a judgment about the success of the task. Accurate findings help subjects improve self-calibration. In addition, researchers rely on the accuracy of findings to make inferences about underlying metacognitive processes. Consequently, it is important that the measures used to assess monitoring accuracy are as free of bias as possible. Bias indicates whether an observed value of monitoring accuracy over- or underestimates the true value.

This study examined gamma and three other viable statistics, d', C, and the G Index, currently used to measure monitoring accuracy. Using Monte Carlo simulation techniques, …

Students' Conceptions About Climate Change: Using Critical Evaluation To Influence Plausibility Reappraisals And Knowledge Reconstruction, Doug Lombardi

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Intergovernmental Panel on Climate Change (2007) reported a greater than 90% chance that human activities are responsible for global temperature increases over the last 50 years, as well as other climatic changes. The scientific report also states that alternative explanations (e.g., increasing energy received from the Sun) are less plausible than human-induced climate change. These climate scientists have made their plausibility judgment--which I define as the relative potential truthfulness of alternative explanations--based on the evaluation and coordination of multiple lines evidence with competing theoretical perspectives.

Climate change is a highly relevant and gravely serious topic; in an educational setting, …

Buffering Pv Output During Cloud Transients With Energy Storage, Yacouba Moumouni

UNLV Theses, Dissertations, Professional Papers, and Capstones

Consideration of the use of the major types of energy storage is attempted in this thesis in order to mitigate the effects of power output transients associated with grid-tied CPV systems due to fast-moving cloud coverage. The approach presented here is to buffer intermittency of CPV output power with an energy storage device (used batteries) purchased cheaply from EV owners or battery leasers. When the CPV is connected to the grid with the proper energy storage, the main goal is to smooth out the intermittent solar power and fluctuant load of the grid with a convenient control strategy. This thesis …

The New American Conservation Movement: New Strategies, Focus And Organizations For The 21st Century, Amy Deanna Northrup

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation provides evidence of the emergence of a new conservation movement in the United States. The strategic, tactical and organizational approaches of traditional conservation efforts, which began in the early 1900s, have shifted during the last two decades. Specifically, the new conservation movement is characterized by three distinct changes. First, many of the well-established conservation organizations, such as the Sierra Club and National Audubon Society, have largely abandoned their traditional focus on increasing the number of acres preserved; instead more defensive and fragmented forms of conservation now reign. The second change to the conservation movement involves a dramatic expansion …

Periodic Solutions And Positive Solutions Of First And Second Order Logistic Type Odes With Harvesting, Cody Alan Palmer

UNLV Theses, Dissertations, Professional Papers, and Capstones

It was recently shown that the nonlinear logistic type ODE with periodic harvesting has a bifurcation on the periodic solutions with respect to the parameter ε:

u' = f (u) - ε h (t).

Namely, there exists an ε0 such that for 0 < ε < ε0 there are two periodic solutions, for ε = ε0 there is one periodic solution, and for ε >ε0 there are no periodic solutions, provided that....

In this paper we look at some numerical evidence regarding the behavior of this threshold for various types of harvesting terms, in particular we find evidence in the negative or a conjecture regarding the behavior of this threshold value.

Additionally, we look at analagous steady states for the reaction-diusion …

A Refreshable And Portable E-Braille System For The Blind And Visually Impaired, Mohammad Yousef Saadeh

UNLV Theses, Dissertations, Professional Papers, and Capstones

The objective of this research is to design an affordable Braille tactile display that is wearable, refreshable, and portable. The device is intended to be used as an output device that can playback stored media. It can be also incorporated with current Braille reading technologies. The device will control both the electrical and mechanical stimulations to optimize the sensation and ensure extended use of the device. This work is concerned mainly with the mechanical aspects of the design.

This research proposed the development of a finger-wearable, scanning-style electric stimulation based (electrotactile) Braille display with sensing and adaptive rendering/actuation functions for …

Spawning, Veliger Growth And Desiccation Of Dreissena Bugensis, Lynn Schwaebe

UNLV Theses, Dissertations, Professional Papers, and Capstones

Quagga (Dreissena bugensis) mussel veliger growth was compared under two dietary conditions: 1) only seston present in Lake Mead water; and 2) Lake Mead seston plus algae (Isochrysis galbana). Shell length, width, and area were compared as a function of time for the two treatments. It was expected that mussels would exhibit faster growth when supplemented with I. galbana than with Lake Mead water alone. However, no significant difference was observed between the control and I. galbana treatments. This result was unexpected and may have been caused by water quality, the nutritional content of Lake Mead seston, and/or over feeding. …

Framework Development For Construction Safety Visualization, Kishor Shrestha

UNLV Theses, Dissertations, Professional Papers, and Capstones

Throughout the history of the construction industry, many fatalities and injuries have occurred in construction sites. One of the major causes of accidents is unsafe site conditions; basically, this is due to inadequate supervision. To improve upon the traditional supervision approach, this study proposes a `Framework Development for Construction Safety Visualization' approach. In addition to this, a computer vision Edge Detection Algorithm was developed and tested to convert construction site still images into edges of the objects in the images. The framework development of this study uses computer vision, robot vision, image compression, pattern recognition, internet transmission, network communication, and …

Tiny Animals Made To Do Unnatural Things, Ashley Mary Siebels

UNLV Theses, Dissertations, Professional Papers, and Capstones

The stories in this collection revolve around a central theme which is expressed by my titleTiny Animals Made To Do Unnatural Things. All my characters feel guilt about decisions and experiences that haunt their past. In the present, they have come to a crossroads and are trying to decipher between what they were made to do as in vocation and evolution and what they are being made to do by the authorial pressures that loom over them (e.g. bosses, parents, loan officers, prison guards.)

In this way, my thesis pivots on the word made. Made (or to make) has many …

Legal Issues In Green Construction, Namrata Shrestha

UNLV Theses, Dissertations, Professional Papers, and Capstones

The most recent "green construction movement", made a significant impact on the design and construction industry in the United States. Organizations such as the American Institute of Architects (AIA) have lobbied governmental entities to provide financial incentives to promote green construction. The green construction community also promotes the notion that a healthier working and living environment is achieved. Due to finical incentives coupled with projected long-term energy cost savings, many owners of new construction are considering green construction as an option. Accompanying the "green construction movement", new kinds of legal issues, particularly relating to green aspects such as certification, energy …

Principal Change Facilitator Style And Student Achievement: A Study Of Schools In The Middle, Steven Keith Stewart

UNLV Theses, Dissertations, Professional Papers, and Capstones

Research reflecting the influence of leadership in middle level schools related to improving student achievement is scarce in spite of the pressure placed on schools by federal mandates and policies, such as NCLB, to reach ever-increasing levels of achievement. Although there is extensive literature on leadership and its possible influence on climate and culture, teacher efficacy, vision and goals of schools, and instruction, most of these topics are considered indirectly linked to student achievement. Few, if any, of these studies touch on the specific nature of middle level schools and how principal leadership might influence improved student achievement.

This quantitative …

The Behavior Of Zircon During Partial Melting In Anatectic Migmatites: Insights To Metamorphism, Deformation And Tectonism In The Central Santa Fe Range, Northern New Mexico, Michelle Renee Stropky

UNLV Theses, Dissertations, Professional Papers, and Capstones

Three lithologic assemblages exposed in the central Santa Fe Range, northern New Mexico include (1) a septum of Proterozoic low temperature (~700oC, 5.5 kbars), semi-pelitic anatectic migmatites surrounded by (2) deformed megacrystic biotite granite that is intruded by (3) discrete plutons of largely undeformed hornblende biotite tonalite. Metamorphic fabrics in the migmatite record three deformation events (D1 - D3); a composite S1/S2 fabric (D1 and D2) that formed contemporaneous with anatexis and is folded about a southwest plunging map-scale (D3) antiform. The megacrystic granite exhibits a pervasive S1 subsolidus foliation that parallels the S1/S2 fabric in the migmatite and is …

A Turkish Dictionary, Andrew Wessels

UNLV Theses, Dissertations, Professional Papers, and Capstones

The poems in this manuscript, A Turkish Dictionary, probe a number of related issues: What is the relationship between a word and its object? What is the connection between meaning in two different languages? How do we live in a city overwhelmed with history? What is necessary? How do we accept knowing that we cannot know? These and other questions constitute the investigative purpose of the manuscript as specifically and actively an exploration of the questions rather than an argument for a final, singular answer. Structurally, the manuscript uses two poetic forms: dictionary poems and prosaic poems. The dictionary poems …

Efficiency Of Fiscal Expenditures In Nevada Elementary Schools Using Data Envelopment Analysis, Todd Patrick Yocum

UNLV Theses, Dissertations, Professional Papers, and Capstones

For decades educational researchers have attempted to find links between school funding and student achievement. These attempts have generated many contradictory viewpoints and have produced many unanswered questions. Ever increasing accountability on states, districts and schools combined with severe financial strain has made measuring school fiscal efficiency a valuable tool for school leaders looking to get more student achievement with fewer resources.

The methodology for this study was comprised of two phases. Phase I analyzed the per pupil expenditures of Nevada elementary schools over a three-year period and developed descriptive statistics that revealed the expenditure patterns by category. Phase II …

Understanding Urban Sustainability And Quality Of Life: A System Dynamics Approach, Abby Elizabeth Beck

UNLV Theses, Dissertations, Professional Papers, and Capstones

For an urban area to be sustainable, its resources cannot be depleted faster than they can replenish. If an urban area is to provide a high quality of life (QOL), it must offer and maintain an amenity package that satisfies its resident's preferences. Past studies on these topics all have a common thread: sustainability and QOL both pertain to people's relationship to capital. Capital is something that can accumulate and add value to a person or society. If sustainability and QOL are a function of people's relationship with capital, how they use it, deplete it, replenish it and transform it …

Writing In Science: Influences Of Professional Development On Teachers' Beliefs, Practices, And Student Performance, Lori Fulton

UNLV Theses, Dissertations, Professional Papers, and Capstones

Science education reform calls for learners to be engaged in hand-on, minds-on activities related to science. As a part of this reform effort, learners are encouraged to use writing as a means of documenting their work and developing their understandings. This qualitative case study employed the Conceptual Change Perspective and Sociocultural Perspective to examine the impact on three elementary teachers' beliefs, practices, and student outcomes, as they relate to science notebooks, based on their participation in a professional study group. Data sources included teacher and student interviews, video of the study group meetings, video of classroom lessons, and student work …

Valuation Of Financial Derivatives Subject To Liquidity Risk, Yanan Jiang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Valuation of financial derivatives subject to liquidity risk remains an open problem in finance. This dissertation focuses on the valuation of European-style call option under limited market liquidity through the dynamic management of a portfolio of assets. We investigate liquidity from three perspectives: market breadth, depth, and immediacy. We present a general framework of valuation based on the optimal realization of a performance index relative to the set of all feasible portfolio trajectories. Numerical examples are then presented and analyzed that show option price increases as the market transitions from liquid to less liquid state. Furthermore, buying and selling activities, …

Measured Rates Of D2 Abstraction In H2o+ , D2 Substitution In H2do+ And Charge Transfer Of He2+ With Noble And Other Gases At <1ev, Chrysanthos Kyriakides

UNLV Theses, Dissertations, Professional Papers, and Capstones

Experimental determination of the rate coefficient values of deuterium abstraction in water ions and deuterium substitution in hydronium ions can improve the understanding of D/H in water at planetary atmospheres, cometary atmospheres, and interstellar medium. Using a cylindrical ion trap, (CIT) and time of flight (TOF) mass spectrometry, a number of measurements at energies below 1 eV have been performed. The deuterium abstraction rate coefficient in water ions, H₂O⁺, and an upper limit for the hydrogen-deuterium substitution rate coefficient in monodeuterated hydronium ion, H₂DO⁺, have been measured. Both the abstraction and substitution …