Digital Commons Network^™

Development Of A Gis-Based Routing Model, Xinnong Yang

UNLV Retrospective Theses & Dissertations

Route optimization models deal with multi-criteria or multi-objective optimization problems. The basic objectives of routing problems include transport cost and risk affects. An improved model presented in this thesis addresses a new optimization model, "Range Optimization Model". Although the core of the route optimization tools adopted is still the conventional "Shortest Path Algorithm", the definition of route optimization functions and the means to employ "Shortest Path Algorithm" are different from conventional procedures; Geographic Information Systems (GIS), have been widely used as a spatial database management system and a geographical analysis tool in a variety of fields related to study of …

High-Energy Behavior Of The Double Photoionization Of Helium From 2 To 12 Kev, Jon C. Levin, Ivan A. Sellin, B. M. Johnson, Dennis W. Lindle, R. D. Miller, Y. Azuma, H. G. Berry, D.-H. Lee, N. Berrah

Chemistry and Biochemistry Faculty Research

We report the ratio of double-to-single photoionization of He at several photon energies from 2 to 12 keV. By time-of-Aight methods, we find a ratio consistent with an asymptote at 1.5%±0.2%, essentially reached by h v≈4 keV. Fair agreement is obtained with older shake calculations of Byron and Joachain [Phys. Rev. 164, 1 (1967)], of Aberg [Phys. Rev. A 2, 1726 (1970)], and with recent many-body perturbation theory (MBPT) of Ishihara, Hino, and McGuire [Phys. Rev. A 44, 6980 (1991)]. The result lies below earlier MPBT calculations by Amusia et al. [J. Phys. B 8 …

Southern Nevada Effluent Wetlands: A Proposed Cooperative Venture Between The Bureau Of Reclamation & City Of Las Vegas, Bureau Of Reclamation

Publications (WR)

Throughout North America there is a growing interest in constructed wetlands, both as relatively inexpensive, low-maintenance systems for removing nutrients from wastewater, and as a means of using municipal wastewater to enhance wildlife habitat and create public use opportunities. Because wetlands appear to have good potential as a component in the overall management of scarce water resources, the Bureau of Reclamation (Reclamation) has undertaken several cooperative research and demonstration projects to evaluate their effectiveness in a variety of local environments. While a number of projects have demonstrated that wetlands can be beneficially employed to improve water quality, few such projects …

Unlv Magazine, Barbara Cloud, Lisa Story

UNLV Magazine

No abstract provided.

Critical Theory And The Pragmatist Challenge, Dmitri N. Shalin

Sociology Faculty Research

Habermas's theory breaks with the Continental tradition that has denigrated pragmatism as an Anglo-Saxon philosophy subservient to technocratic capitalism. While Habermas deftly uses pragmatist insights into communicative rationality and democratic ethos, he shows little sensitivity to other facets of pragmatism. This article argues that incorporating the pragmatist perspective on experience and indeterminacy brings a corrective to the emancipatory agenda championed by critical theorists. The pragmatist alternative to the theory of communicative action is presented, with the discussion centering around the following themes: disembodied reason versus embodied reasonableness, determinate being versus indeterminate reality, discursive truth versus pragmatic certainty, rational consensus versus …

The Impact Of A Water-Imposed Interruption Of Growth In The Las Vegas Region, William T. White, Thomas M. Carroll, R. Keith Schwer

Publications (WR)

This study is prompted by the expectation that water supplies for the Las Vegas Valley, both those used currently and those additional quantities available from existing sources, cannot sustain significant further economic growth of the region beyond the year 2006.

There are five parts to this study. Part I uses a regional econometric (REMI) model to project the growth of the Las Vegas region to natural maturity, essentially unconstrained by an overriding water shortage.

Part II is a reinforcing cross-section analysis of metropolitan areas in the United States to learn the most common natural growth patterns and those that have …

Depositional Environments And Paleoecology Of The Lower Ordovician Pogonip Group, Opd Unit, Arrow Canyon Range, Clark County, Nevada, Jeffrey K. Donovan

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Opd Unit of the Pogonip Group is a slope-forming carbonate sequence that crops out in the Arrow Canyon Range 75 miles north of Las Vegas, Nevada. It is composed mainly of grainstones, packstones, and intraformational conglomerates and also contains Calathium-bearing bioherms composed dominantly of wackestones. These rocks were deposited in a shallow-water, high-energy, subtidal, tropical marine environment. Nuia and Nuia-crinoid shoals developed on this shallow ramp and the area was frequently disturbed by storms.

Calathium-dominated carbonate mudmounds emerged on the Nuia and Nuia-crinoid shoals. Although Calathium dominated the mounds on a macroscopic scale, the mounds …

Measurement Of Thermal-Energy Charge-Transfer Rate Coefficient Of Mo6+ And Argon, Victor H.S. Kwong, Z. Fang, Yingtao Jiang, T. T. Gibbons, L. D. Gardner

Electrical & Computer Engineering Faculty Research

The charge-transfer rate coefficient of Mo6+ and argon has been measured at mean ion energies of 8.8 and 1.4 eV using a laser-ablation ion source and an ion trap. The rate coefficient deduced from these measurements is 1.02(0.10)×10-10 cm3 s-1 and appears to be independent of the mean ion energy at this energy range. However, the measured value is an order of magnitude smaller than the Langevin rate coefficient.

Oasis, Barbara Cloud, Lisa Story

UNLV Magazine

No abstract provided.

Unlv "Rebels" Vs. Utah State, University Of Nevada, Las Vegas

UNLV Basketball Programs

Team roster for both schools.

UNLV Schedule

List of UNLV Scholarship Donors

Meet the Rebels

Opponent's Scouting Report

Jerry Tarkanian Story

Jerry Tarkanian Tribute

Also contains a Jerry Tarkanian poster

Also contains information on other sports at UNLV

Evidence For Atomic Processes In Molecular Valence Double Ionization, U. Becker, Oliver Hemmers, B. Langer, A. Menzel, R. Wehlitz, W. B. Peatman

Environmental Studies Faculty Publications

Complete molecular valence-electron spectra were measured for CO. Unexpectedly, discrete lines at low kinetic energies were found, superimposed on a continuous energy spectrum representing direct double-ionization processes. The appearance of these lines is discussed in the context of the formation of the C⁺+O⁺ ion pair near its associated threshold at 38.4 eV. It is ascribed to valence-excited repulsive (CO⁺)^* states, which dissociate to a large part rapidly into atomic fragments before electronic relaxation takes place. From our spectra, partial cross sections for the different processes leading to dissociative valence double ionization are derived.

Fire In A Riparian Shrub Community: Postburn Water Relations In The Tamarix-Salix Association Along The Lower Colorado River, S. D. Smith, D. E. Busch

Life Sciences Faculty Research

Higher water potentials in recovering burned salt-cedar (Tamarix ramosissima) relative to unburned plants and the opposite situation in willow (Salix gooddingii) provide evidence that postfire water stress is reduced in the former but not the latter. Similarly, diurnal patterns of stomatal conductance in these taxa are consistent with the existence of more vigor in burned salt-cedar than willow. Plots of water potential and transpiration demonstrate that hydraulic efficiencies may contribute to differences in fire recovery.

Finding Hiv-Infected Women - The Clinician's Role, Mary Guinan

School of Public Health Faculty Research

An estimated 100,000 women are currently infected with the human immunodeficiency virus (HIV) in the United States, and a great majority of them are unaware of their condition. Approximately 20,000 HIV-infected women were identified through publicly funded HIV screening programs in 1989 and 1990, and an unknown number through private screening. Because most HIV-infected women are believed to be in the lower socioeconomic strata, it is unlikely that a significant number were identified in the private sector. Therefore, up to 80% of HIV-positive women may not know they are infected.

Determinants Of Salary In Nonprofit Organizations: A Study Of Executive Compensation In Symphony Orchestras, Michael David Moss

UNLV Retrospective Theses & Dissertations

This thesis presents the development of a demand equation for symphony orchestras and a three equation, simultaneous model examining factors which influence nonprofit executive compensation. Results from the demand equation demonstrate that nonprofit orchestras operate in the inelastic portion of the demand curve. Thus, ticket sales generate negative marginal revenues and attendance is increased at the expense of profit. If total revenue is less than total cost, the orchestra must be subsidized by contributions from private and public sectors. The compensation model indicates that salary is positively correlated with the ability to increase contributions and improve organizational quality. Therefore, administrators …

Parameters Of Undergraduate Gambling, Steven L Oster

UNLV Retrospective Theses & Dissertations

Students from the University of Nevada, Las Vegas were surveyed about gambling behavior. Over 92% of the students under 21 years of age had gambled, with over 50% having gambled in a casino, and 22% gambled weekly. As measured by the South Oaks Gambling Screen (SOGS), 11.2% of the sample scored in the pathological gambling range. Gambling and pathological gambling behaviors displayed a significant relationship to male gender, non-residency status, being over 21 years-old, and getting drunk often. The DSM-III-R, proposed DSM-IV, and the SOGS criteria measured pathological gambling at 5.1%, 4.2%, and 11.2%, respectively. No relationship was found linking …

Treating Communication Apprehension In The Basic Public Speaking Course: A National Survey And Recommendations, Thomas Eugene Robinson

UNLV Retrospective Theses & Dissertations

Communication apprehension (CA) or stage fright can result in shaking hands, a quivering voice, nausea, in addition to causing permanent emotional and social damage. Most students enrolled in the basic public speaking course suffer at some level with communication apprehension. With what is at stake in terms of success and failure, there needs to be some treatment for CA in these basic public speaking courses. A number of institutions have created special courses to treat apprehensive students, while others leave the treatment up to the individual instructors. These instructors must then decide, from the resources available, what treatment techniques best …

Mathematical Modeling, Trajectory And Vibrations Control Of A Three Link Flexible Robot, Satish Jupudi

UNLV Retrospective Theses & Dissertations

The objective of this thesis is to study the dynamics and control of a three link flexible robot. The Lagrange equations are used for deriving the equations of motion of this three link flexible robot. The equations of motion of this robot are derived by using a mathematical and symbolic manipulation software known as MACSYMA. The vibration mode shapes are approximated by using assumed mode method. A PID 'proportional, integral and differential' controller is used in this system to control the input torques to obtain desired joint angles trajectory. Linear stabilizers are introduced to suppress the vibrations of the links …

Ambrose Bierce: Between Politics And Philosophy, Jeffrey Raymond Macmillan

UNLV Retrospective Theses & Dissertations

This study examines the political thought of Ambrose Bierce. Because of his aversion to Gilded Age politics, Bierce did not participate in the political process. As a result, his political thought must be considered from an ideological or philosophical perspective; Examination of his views suggests Bierce was a philosophical conservative much like the "father" of British conservative thought, Edmund Burke. Though many political historians argue American political culture has never contained elements of British conservatism, others claim there has always existed a small strain of Burkean conservatism throughout American political history. This study supports the latter view by holding the …

Incestuous Wharton: A Consideration Of The Theme, Laura Kathleen Mcbride

UNLV Retrospective Theses & Dissertations

Nineteenth century anthropologists had identified the development of incest taboos as the dividing line between savage and civilized human beings. Sigmund Freud expanded on these early anthropological notions of incest in identifying incestuous desire at the heart of human sexuality; In The Reef and Summer, Wharton toys with these scientific ideas about incest; the radically different way that Summer incorporates incestuous tension echoes Freud's more complex assumptions. In The Reef, Anna Leath upholds social order by rejecting her own sexuality. In refusing to marry Darrow, she takes a stand against the destabilizing forces of incestuous longing but loses her own …

A Study Of The Relationship Between Anxiety And Social Support Systems, Nancy Knight Miller

UNLV Retrospective Theses & Dissertations

The study was designed to investigate the relationship between anxiety and social support systems. University students (N = 145) were given two questionnaires. On the first questionnaire the students were required to respond to questions assessing their anxiety levels. On the second questionnaire the students were required to respond to questions assessing the levels of social support which they may have or perceive that they can access if and when they need it. A descriptive analysis of the data was made and significant negative correlation was found to exist between levels of social support and anxiety. Thus, it is important …

Spectral Analysis Of Random Number Generators, Christy Juinsuk Olsen

UNLV Retrospective Theses & Dissertations

This paper is based on the theory developed by Dr. Evangelos Yfantis, professor of Computer Science at University of Nevada, Las Vegas. In this paper, we describe a method for testing the fairness of pseudorandom number generators using the Discrete Fourier Transform. We will show how the concept of a random process can be used in a representation for random discrete time signals. Using this concept, we have focused on the mathematical representations of the spectral analysis of a fair pseudorandom number generator. From this representation, a reasonable "spectral" expectation is determined. An algorithm which applies the developed method is …

The Japanese-American Dilemma: A Comparison Of Their Relationship Within George Modelski's Theoretical Framework Of Long Cycles, Valerie Jean Pelton

UNLV Retrospective Theses & Dissertations

The objective of this thesis is to address the nature of Japanese-American bilateral relations in the twentieth century. An adaptation of George Modelski's theory of global long cycles is the tool used to analyze the relationship. This adaptation gives a broader evaluation of the relationship and provides a basis for predicting possible economic shifts. The focus of the analysis is an exploration of whether changes occurring in the post-1980s lay the ground work for a new stage of friction similar to that of the interwar period. Specifically, the argument is that the United States is in a period of decline …

Management Principles For Bed And Breakfast Inns: Operator Needs And "How To" Book Advice, Pamela Anne Riches

UNLV Retrospective Theses & Dissertations

This thesis is a study of the management information needed by bed and breakfast operators. The need to understand what makes a bed and breakfast inn successful and how to go about providing this information to the operators is the focus of this study. Four books on "How To Open a Bed and Breakfast Inn" were analyzed using content analysis. Additionally, a survey was sent to Nevada bed and breakfast operators to identify their informational needs. The results of the content analysis and the survey were compared in order to identify topics that were not being covered adequately for Nevada …

Analysis Of Automatic Guided Vehicles And Self-Guided Vehicles For Hospital Foodservice, Michael Andrew Roden

UNLV Retrospective Theses & Dissertations

This thesis analyzes the relative merits of "Automatic Guided Vehicles" (AGVs) and "Self Guided Vehicles" (SGVs) in the area of hospital foodservice; Data is derived from the bids of Apogee Robotics for their Orbiter{dollar}\sp{\rm TM}{dollar} system (AGV) and Transitions Research Corp for the HelpMate{dollar}\sp{\rm TM}{dollar} self guided robot, to Humana Hospital Sunrise. The major difference between the two systems is that the AGV can carry a full Dietary cart with thirty trays but is limited to a pre-laid track system. Conversely HelpMate has a map of the facility programmed in its memory and can roam anywhere, but is only able …

Polonium-210 Radioactivity In Lake Mead Fish, Charlita G Rosal

UNLV Retrospective Theses & Dissertations

Polonium-210, a naturally occurring radioisotope, has been found at high concentrations in marine fish. One publication reports much lower concentration (on the order of 10{dollar}\sp{-1}{dollar}) of {dollar}\sp{210}{dollar}Po in fresh-water fish compared to salt-water, although the visceral organs were not analyzed. This hypothesis was tested for its generality by analyzing various fish from Lake Mead. Studies of polonium are useful because the man-made radioactive plutonium is also a heavy metal with very similar energy of alpha particle emission during radioactive decay; This study was directed toward determining the radioactivity levels of {dollar}\sp{210}{dollar}Po in Lake Mead fish, particularly catfish, striped bass and …

A Comparative Analysis Of Human Skeletal Remains From Parowan Fremont, Virgin Anasazi, And Kayenta Anasazi Archaeological Sites, Heidi Roberts

UNLV Retrospective Theses & Dissertations

Human skeletal remains from the prehistoric Parowan Fremont, Virgin Anasazi, and Kayenta Anasazi cultural traditions are examined, to quantify differences in skeletal parameters and burial practices. Statistical comparisons show no significant differences in skeletal metric traits among the 125 individuals studied; While most individuals examined were healthy, the prevalence of periostitis, osteitis, and linear enamel hypoplasia was found to be highest among Virgin Anasazi individuals. Two other pathologies, porotic hyperostosis and cribra orbitalia, were most common among the Kayenta sample and least among the Parowan Fremont sample; From literature review and new data, much variability was found in mortuary practices. …

Sampling Inner Experience In The Learning Disabled Population, Barbara Lynn Schamanek

UNLV Retrospective Theses & Dissertations

The inner experience of four learning disabled individuals and three undiagnosed individuals, ages 24 to 40 years, was investigated using the method of descriptive inner experience sampling (Hurlburt, 1990). This method requires that the subject "freeze" moments of inner experience when signaled by a randomly programmed beeping device, and write down the thoughts, feelings, images and/or other inner experiences occurring at that precise moment. Within 24 hours, the subject met with the experimenter and discussed in detail each sampled moment. The experimenter then prepared descriptions of each sampled moment, which were examined for salient characteristics which emerged from these descriptions. …

The Road Home (Original Writing), James Carl Snape

UNLV Retrospective Theses & Dissertations

This collection of short stories was written and revised over an eighteen month period beginning in the Fall of 1991. Most of the work was done in conjunction with Richard Wiley's creative writing workshops. The stories are all fictional, though each one has some part of its genesis in my experience.

Dating Of Fallout In Lacustrine Sediment In Southwestern Utah, Alex Clark Tikanen

UNLV Retrospective Theses & Dissertations

Sandy Cove is located in an area of southwestern Utah which received the highest fallout from Nevada Test Site (NTS) nuclear testing during the period 1951-1959. The reservoir was shown to have a constant sedimentation rate and to be relatively undisturbed. A 40 centimeter (cm) core taken from this reservoir contained sediment deposited after 1974 and did not reach back to the NTS fallout years of 1951 to 1959 or back to the peak worldwide fallout years of 1962-1963. The amounts of cesium-137 (Cs-137) and plutonium-239,240 (Pu-239,240) which were found in a 1974-1979 dated Sandy Cove core section were almost …

High Current Coaxial Ion Beam/Laser Beam Spectrometer, Qiang Tu

UNLV Retrospective Theses & Dissertations

The construction and operation of a new apparatus for making spectroscopic investigations of molecular ions is described. In the new ion beam machine, the ion beam and laser beam overlap in a coaxial geometry. The machine has much higher ion current than an apparatus previous used. The laser beam induces transitions between internal states of the molecular ion. The transitions are detected by allowing the ion beam to collide with background gas and detecting the surviving ion beam current. Because the cross-section depends on the internal state of the ion, the surviving ion beam current will change when the laser …