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Unlv Magazine, Barbara Cloud, Laurie Fruth

UNLV Magazine

No abstract provided.

The Use Of Spectrofluorimetry And Capillary Electrophoresis/Laser-Induced Fluorescence For The Detection Of Fluorescent Dyes In Groundwater Migration Studies, Patrick Ferguson

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis involves work that was accomplished during a two-year internship at the Environmental Protection Agency's (EPA), Environmental Chemistry Branch. The research is an application of trace level determination of fluorescein dyes used as groundwater tracers. The work was performed to determine whether groundwater could migrate from a Resource Conservation Recovery Act (RCRA) site to an adjacent Superfund site. The research involved using Spectrofluorimetry and a new technique called capillary electrophoresis/laser induced fluorescence (CE/LIF) to determine tracer dyes that were injected at the RCRA site and monitored at the Superfund site. Results from Spectrofluorimetry were compared to those of CE/LIF. …

Aspects Of Postcollision Interactions (Pci) Near The Ar L-Shell, James A.R. Samson, Y. Lu, Wayne C. Stolte

Chemistry and Biochemistry Faculty Research

In the present work we are interested in near-threshold photoionization experiments involving postcollision effects related to the Auger decay of a vacancy in the Ar L shell. In particular, we have measured the photoelectron energy spectrum resulting from the above postcollision interaction effects and have observed electrons produced by the process of electron capture and reemission.

Library Tech Notes, The Unlv Libraries Technology Committee

Library TechNotes

A newsletter containing a variety of sections including:

Camille's Comments

PC Mechanic

Technology Booklist

Like Magic

Sending Mail Between cc: Mail and Pioneer

Tech Book Review

Gallium Desorption Behavior At Algaas/Gaas Heterointerfaces During High-Temperature Molecular Beam Epitaxy, K. Mahalingam, D. L. Dorsey, K. R. Evans, Rama Venkat

Electrical & Computer Engineering Faculty Research

A Monte Carlo simulation study is performed to investigate the Ga desorption behavior during AlGaAs-on-GaAs heterointerface formation by molecular beam epitaxy. The transients in the Ga desorption rate upon opening the Al shutter are shown to be associated with the concurrent reduction in the V/III flux ratio. Monte Carlo simulations employing a constant V/III flux ratio yield a “steplike” variation in the Ga desorption rate with the resulting interfaces closer in abruptness to the ideal AlGaAs-on-GaAs interface. Further details on the stoichiometry of the interface and its relationship with predicted Ga desorption profiles is presented.

Assessing Libraries In Support Of Campus Missions, Patricia Iannuzzi

Library Faculty Presentations

I’ve chosen to address the educational role of the library. There are many other facets of library programs and services that are an integral part of the campus mission -- such as building collections that support research and teaching - but in continuing Rita’s focus on access vs. ownership, and balancing the functions of collection development with connection development - our role as educators also continues to evolve from point of use instruction - to classroom instruction - from teaching library research skills to teaching information literacy skills.

Library Tech Notes, The Unlv Libraries Technology Committee

Library TechNotes

A newsletter containing a variety of sections including:

Tuma's Wondrous Web World

Congratulations! The Index is Done!

PC Mechanic

Technology Booklist

Technical Services Web Team Resources Now Online

Nevada Newspaper List on the Internet

Intranet NEW Section and Intranet Index

News Flash! Library Web Site has Index!

More Electronic Indexes Available

Nondipole Resonant X-Ray-Raman Spectroscopy: Polarized Inelastic Scattering At The K Edge Of Cl2, J. D. Mills, J. A. Sheehy, T. A. Ferrett, S. H. Southworth, R. Mayer, Dennis W. Lindle, P. W. Langhoff

Chemistry and Biochemistry Faculty Research

Experimental and theoretical studies are reported on the inelastic (Raman) scattering of wavelength-selected polarized x rays from the K edge of gas-phase chlorine molecules. The polarized emission spectra exhibit prominent nondipole features consequent of phase variations of the incident and emitted radiation over molecular dimensions, as predicted by the Kramers-Heisenberg scattering formalism. Issues pursuant to the detection of core-hole localization by resonant Raman scattering from homonuclear diatomic molecules are critically examined. [S0031-9007(97)03486-8]

Teenage Pregnancy: Correlates Of Sexual Behavior And Overview Of Prevention, Intervention, And Local Programs, Janice Rollins Monteiro

UNLV Theses, Dissertations, Professional Papers, and Capstones

It is doubtful that any woman who has become pregnant and delivered a child did not experience some level of anxiety or frustration. It is also not likely that these women did not have anything else occurring simultaneously in their lives, such as work, social, and family commitments. Pregnancy and the expectancy of bringing a new life into the world inherently carry a certain amount of stress and uncertainty. Finding oneself in this situation has an incredible impact when a young woman has perhaps not even fully developed herself, and is faced with the challenge of raising a child.

Breakdown Of The Independent Particle Approximation In High-Energy Photoionization, E. W. B. Dias, H. S. Chakraborty, P. C. Deshmukh, S. T. Manson, Oliver Hemmers, P. Glans, D. Hansen, H. Wang, S. B. Whitfield, Dennis W. Lindle, R. Wehlitz, Jon C. Levin, I. A. Sellin

Environmental Studies Faculty Publications

The independent particle approximation is shown to break down for the photoionization of both inner and outer nℓ (ℓ>0) electrons of all atoms, at high enough energy, owing to interchannel interactions with the nearby ns photoionization channels. The effect is illustrated for Ne 2p in the 1 keV photon energy range through a comparison of theory and experiment. The implications for x-ray photoelectron spectroscopy of molecules and condensed matter are discussed.

Estimation Of Groundwater Velocities From Yucca Flat To The Amargosa Desert Using Geochemistry And Environmental Isotopes, Ronald L. Hershey, Steve Y. Acheampong

Publications (WR)

Geochemical modeling techniques were applied to groundwater flowpaths from Yucca Flat on the Nevada Test Site (NTS) to the Amargosa Desert, south of the NTS to estimate groundwater flow velocities for independent comparison to velocities calculated by other methods. The groundwater flowpaths examined considered flow in the carbonate aquifer beneath Yucca and Frenchman flats mixing with flow from carbonate aquifers east and southeast of the NTS and discharging at wells south of the NTS border. The approach used the computer codes WATEQ4F and NETPATH to calculate chemical speciation, determine the saturation state of mineral phases, and simulate mixing and the …

Artificial Recharge In The Las Vegas Valley: An Operational History, Michael Johnson, Erin Cole, Kay Brothers, Las Vegas Valley Water District

Publications (WR)

Artificially recharging the Las Vegas Valley (Valley) ground-water system with treated Colorado River water is one water resource management option employed by the Las Vegas Valley Water District (District) to help meet future long-term and short-term peak water demands. The District began operation of an artificial ground-water recharge program in 1988 in order to bank water for future use and to slow declining water levels. Artificial recharge occurs in the winter months, typically from October to May, when there is excess capacity in the Southern Nevada Water System (SNWS), currently a 400 Million Gallon per Day (MGD) treatment and transmission …

Blm Rangeland: Has The Condition Improved?, Angela C. Dudley

UNLV Theses, Dissertations, Professional Papers, and Capstones

"Whose Home Is the Range, Anyway?: The latest research is confirming that in the West's fragile public lands, cattle are often bad news for wildlife." This is the title and headline of Lisa Drew's article in the December/January 1994 issue of National Wildlife. It shows a picture of what looks like a wasteland with only cattle, manure and a fence, no vegetation (Drew, 1994). Inside the article, Drew quotes biologist Bob Ohmart at Arizona State University's Center for Environmental Studies as saying, "Livestock grazing is without a doubt the greatest threat to western wildlife" (p. 15). Drew contends that, "The …

Library Tech Notes, The Unlv Libraries Technology Committee

Library TechNotes

A newsletter containing a variety of sections including:

Camille's Comments

The Library Intranet

PC Mechanic

Technology Booklist

Tuma's Wondrous Web World

Tech Book Review

Checking for Viruses on PCs or Diskettes

Las Vegas Wash Water Quality Monitoring Program: 1996 Report Of Findings, Richard A. Roline, James J. Sartoris, U.S. Bureau Of Reclamation, U.S. Geological Survey

Publications (WR)

Las Vegas Wash, a natural wash east of the city of Las Vegas, Nevada, carries stormwater, groundwater drainage, and sewage effluent from three sewage treatment plants to Lake Mead. The Wash provides nearly the only surface water outlet for the entire 2,193 mi² of Las Vegas Valley. A drainage area of 1,586 mi² contributes directly to the Wash through surface flow which is channeled to Las Vegas Bay of Lake Mead, while drainage of the remaining 607 mi² is presumably subsurface and may drain toward Las Vegas Wash.

In the 1930's and 1940's, sewage treatment plants were …

Investigating The Use Of Kalman Filtering Approaches For Dynamic Origin-Destination Trip Table Estimation, Pushkin Kachroo, Kaan Ozbay, Arvind Narayanan

Electrical & Computer Engineering Faculty Research

This paper studies the applicability of Kalman filtering approaches for network wide traveler origin-destination estimation from link traffic volumes. The paper evaluates the modeling assumptions of the Kalman filters and examines the implications of such assumptions.

Library Tech Notes, The Unlv Libraries Technology Committee

Library TechNotes

A newsletter containing a variety of sections including:

Camille's Comments

PC Mechanic

Technology Booklist

Tuma's Wondrous Web World

The Virtual Chase

Unlv Magazine, Barbara Cloud, Laurie Fruth

UNLV Magazine

No abstract provided.

Critical Evaluation Of The Double Tracks Remediation Project, Craig J. Barnes

UNLV Theses, Dissertations, Professional Papers, and Capstones

The U.S. Atomic Energy Commission (AEC) (now the U.S. Department of Energy), in testing the safety of nuclear weapons under many different conditions, detonated single plutonium bearing devices in such a fashion as to simulate an unintentional detonation of the high-explosive portion of nuclear weapons. This resulted in the uncontained spread of plutonium and other radionuclides, such as americium and depleted uranium, in the environment in the vicinity of these experiments. The Double Tracks site was one of these experiments on the Tonopah Test Range (TTR) which was contaminated hi excess of 200 picocuries per gram (pCi/g). The Double Tracks …

The Eldorado Landfill: A Case Study, Heather A. Nash

UNLV Theses, Dissertations, Professional Papers, and Capstones

In 1995, Boulder City bought from the federal government 167 square miles of land in the Eldorado Valley which is located approximately seven miles west of the city. Soon afterward, the current landfill in Boulder City began accepting construction waste from Las Vegas. The large dump trucks had to travel through Boulder City on route to the landfill. In doing this they passed through three school zones and residential areas. When residents began complaining about the trucks, the Boulder City City Council began investigating various ways to solve the problem. The solution they adopted was to construct a new landfill …

Feedback Control Solutions To Network Level User-Equilibrium Real-Time Dynamic Traffic Assignment Problems, Pushkin Kachroo, Kaan Ozbay

Electrical & Computer Engineering Faculty Research

A new method for performing dynamic traffic assignment (DTA) is presented which is applicable in real time, since the solution is based on feedback control. This method employs the design of nonlinear H∞ feedback control systems which is robust to certain class of uncertainties in the system. The solution aims at achieving user equilibrium on alternate routes in a network setting.

Recycling At Work: Waste Reduction And Recycling In The Las Vegas Hospitality Industry, Darlene M. Cartier

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Las Vegas hotel and restaurant industries generate 27% of the total waste for Clark County, Nevada. In an effort to study and increase recycling participation in the hospitality industry, Las Vegas hotels and restaurants were contacted to participate in a collaborative project between UNLV's Department of Environmental Studies and the Clark County Health District's Environmental Health Division, The project involved interviewing establishments with recycling programs currently in place. Information gathered from interviews and program tours was used to develop programs for hotels and restaurants who were not yet recycling. This thesis contains case studies of restaurants and hotels who …

Effect Of Foreclosure Status On Residential Selling Price: Comment, Thomas M. Carroll, Terrence M. Clauretie, Helen R. Neill

Public Policy and Leadership Faculty Research

In this comment we examine the conclusion by Forgey, Rutherford and VanBuskirk (1994) “that the foreclosed properties sold at a 23% discount,” using a sample of nearly 2,000 residential property sales from the Las Vagas, Nevada area. We found that when not controlling for location with a set of dummy variables for zip codes, HUD foreclosed properties sold for between 12.18% and 13.96% below a random sample of properties not within one block of foreclosed properties. When controlling for location, using a set of thirty-one dummy variables for zip codes, the foreclosure discount fell to between 8.45% and 9.72%. When …

Composting Landscape Waste From The University Of Nevada, Las Vegas, K. Jill Hammond

UNLV Theses, Dissertations, Professional Papers, and Capstones

The University of Nevada, Las Vegas is a major producer of organic waste in the Las Vegas Valley. Composting landscape wastes is one way to reduce both landfill dumping and fertilizer costs for the university. It is also an environmentally friendly means of curbing a nationwide problem: unnecessary use of landfill space. Three sites within Clark County were analyzed for the feasibility of composting: Frenchman Mountain, UNLV Campus, and Boulder City Landfill. Using cost analysis, water availability, and other factors to analyze each site, Boulder City Landfill appears to be the best place to house UNLV's composting operation. Composting in …

Theoretical Study Of A Linear Accelerator Used As A Vuv/X-Ray Source Using The Inverse Compton Scattering Mechanism: Comparisons And Applications, Robert A. Schill Jr., Edward Mccrea

Electrical & Computer Engineering Faculty Research

A classical linear theory is used to compare large synchrotron sources to a rf linear accelerator employed as a VUV/X-ray source. Comparisons are made on a per-pulse basis. It is demonstrated that the linear accelerator as an X-ray source is comparable to large synchrotron accelerators with wiggler insertion devices at the experiment. Applications to lithography, X-ray microscopy, X-ray spectroscopy and detector calibration are examined. Excluding lithography, the linear accelerator with an appropriate laser source is a useful source of X rays for these applications. As verification, classical results are compared with quantum mechanical results and are shown to be in …

The Influence Of The Wastewater Drainage From The Las Vegas Valley On The Limnology Of Boulder Basin, Lake Mead, Nevada-Arizona, James F. Labounty, Michael J. Horn, Bureau Of Reclamation

Publications (WR)

Lake Mead, Colorado River, Arizona-Nevada, is one of the most heavily used reservoirs in the western United States, providing abundant recreational opportunities as well as downstream domestic and agricultural water for over 22 million users. Based on average nutrient levels and productivity, Lake Mead is classified as mildly mesotrophic. The interflow of the Colorado River dominates the limnology of much of the 106 km-long reservoir, and may still be identified at Hoover Dam under certain conditions. The lower basin of Lake Mead ending at Hoover Dam is known as Boulder Basin and is near the Las Vegas metropolitan area. Las …

Leadership Challenges Encountered By Elementary School Principals In The Process Of Creating, Implementing, And Sustaining Shared School Visions In Clark County, Nevada, Elementary Schools, David Allen Price

UNLV Retrospective Theses & Dissertations

Creating, implementing, and sustaining a shared vision is a complicated task for any leader. The Elementary School Division of the Clark County School District (CCSD) expects elementary school principals not only to develop a shared vision for their schools, but also to implement and sustain this shared vision with the aid of their constituencies--other administrators, staff, students, parents, and the community-at-large. Leaders, in this case principals, generally are responsible for developing a shared vision; The concept of visionary leadership has been defined in the literature, and principals can be tested to determine the degree to which they align themselves with …

Statistical Evaluation Of Motorist And Pedestrian Behavior At Signalized Intersections In Las Vegas, Sivashankar Subramani

UNLV Retrospective Theses & Dissertations

This study examines the effect of a law enforcement program implemented to check illegal and unsafe motorist and pedestrian behavior. A case study involving eight selected intersections in Las Vegas (four control and four treatment) was carried out over a period of seven months in conjunction with the pedestrian law enforcement program conducted during March and April of 1996. Pedestrian and motorist behaviors were video taped in 120 minute segments. The tapes were then reviewed to count vehicle violations, pedestrian violations, conflicts, total vehicles and total pedestrians. Violations and conflict rates for pre and during enforcement, and pre and post …

Lossless Motion Compensation Of Images With Large Volumes Of Movement, Michael Aaron Ducharme

UNLV Retrospective Theses & Dissertations

The majority of compression algorithms developed today contain some degree of image loss. While this is acceptable for certain types of image viewing, such a loss can interfere with applications that require the scientific analysis of an image. In this paper a lossless motion compensation compression algorithm is introduced and tested on a series of medical images which contain a high degree of motion. This motion compensation technique compensates for translation, scaling, rotation and the movement of multiple objects. This is accomplished be recursively dividing an image into a series of blocks, starting with a set of sixteen by sixteen …

Organizational Citizenship Behavior: A Study In The Quick Service Industry, Lu Hou Tsai

UNLV Retrospective Theses & Dissertations

Organizational Citizenship Behavior (OCB) is a class of job related behaviors which have been suggested as a fruitful addition to traditional conceptions of job performance. OCB is defined as those behaviors which are discretionary, are not formally recognized by the organizational reward system, and in the aggregate, promotes organizational effectiveness; There were several questions that were examined. The first question asked if OCB have a direct relationship with company task performance. The second question asked if OCB have a direct relationship with company conceptual performance, the third question examined if OCB had a direct relationship with additional service performance. The …