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Comparison Between The Ultraviolet Emission From Pulsed Microhollow Cathode Discharges In Xenon And Argon, Isfried Petzenhauser, Leopold D. Biborosch, Uwe Ernst, Klaus Frank, Karl H. Schoenbach

Bioelectrics Publications

We measured the dynamic I–V characteristics and vacuum ultraviolet (VUV) emission lines of the second continuum in xenon (170 nm) and argon (130.5 nm) from pulsed microhollow cathode discharges (MHCD). For pulse lengths between 1 and 100 μs the dynamic I–V characteristics are similar in both inert gases. Only the time variation of the VUV emission line at 170 nm for xenon can be related to the dimer excited states. In argon the energy transfer between the Ar*₂ dimers and the oxygen impurity atoms is responsible for a qualitatively different time behavior of the resonance line at 130.5 nm. …

Predictors Of Large Women's Satisfaction With Health Care, Virginia M. Koutsouros

PCOM Psychology Dissertations

This cross-sectional observational study identifies specific predictors of large women's satisfaction with health care and participation in preventive care as measured by pelvic screening examinations. A total of 87 large adult women completed a survey, including measures of self-objectification, affective experience, satisfaction with health care, and health care locus of control. Multiple regression analysis was employed to analyze results. The hypotheses of this study were as follows: (1) BMI, self-objectification, negative affect and locus of control will predict satisfaction with medical care; (2) pelvic screening examinations and patient satisfaction with medical care will be positively related (3) self-objectification and negative …

On The Macroeconomic Effects Of Establishing Tradability In Weak Property Rights, Gunnar Eliasson, Clas Wihlborg

Business Faculty Articles and Research

The New Economy is closely associated with computing & communications technology, notably the Internet. We discuss property rights to, and trade in, the difficult-to-define intangible assets increasingly dominating the New Economy, and the possibility of under-investment in these assets. For a realistic analysis we introduce a Schumpeterian market environment (the experimentally organized economy). Weak property rights prevail when the rights to access, use, andtrade in intangible assets cannot be fully exercised. The trade-off between the benefits of open access on the Internet, and the incentive effects of strengthened property rights, depend both on the particular strategy a firm employs to …

Seedling Recruitment In The Coastal Sage Scrub- Grassland Ecotone, Hedvig Nenzen

Whittier Scholars Program

The table of contents include Mediterranean Ecosystems Worldwide, Characteristics of the Local Flora, Reasons and Effects of Invasive Species, the Spread of Invasives in Southern California, Theories of Disturbances and Succession and the Past and Future of Landscape Ecology. Additionally there is a scientific paper included. Landscape and plant community structure is complex, explained by factors such as climate, topography, soil biota, successional stage, disturbance regime, species competitive ability, and land use history. Dispersal, seedling recruitment and (shade tolerance) also maintain patchy vegetation communities. I will examine the characteristics of the ecotone between non-native and native plants in a Southern …

Living With Life-Threatening Illness: An Inquiry Into Children's Experience Of Cancer, Kristy Novinski

Electronic Theses and Dissertations

Previous studies concerning children living with illness have been limited by (a) a narrow focus on the child's cognitive development, (b) reliance on sources outside of the child's experience, (c) reliance on methods based on the language and quantitative modes of measuring used by adults rather than the experience of the child, (d) models that emphasize methods of control in coping, and (e) a tendency to pathologize the responses of the child.

In contrast, the current study involved speaking directly with school-aged children living with a diagnosis of cancer. The qualitative method developed for this study involved a two-fold approach, …

Wedge Veg : Gradient Analysis Of Impacts To Coastal Heath Vegetation At Wedge, Western Australia, Steven O'Dwyer

Theses : Honours

A reliable technique to assess impacts to coastal zones is required as coastal areas across the world are under pressure from an increasing human presence. The result is a greater level of disturbance to the coast, both marine and terrestrial. This study addresses a worldwide problem but is focused to a local scale. Wedge, on the central coast of Western Australia, supports a squatter shack settlement and has done so for approximately 50 years. Over time, the number of shacks, campers, tourists, 4WD's and motorbikes has increased. In recent years this growth has been significant. Management of this area and …

A Linux-Based Graphical User Interface For The Creation And Reading Of The Frame Format: Version 2.4, Muhammed Aoun

Theses : Honours

To gain further knowledge of how the universe began, a new international co-operated project wishes not only to "see" stars exploding, but also to "hear" the explosion. It is theorised that the ability to "listen" to an explosion is possible by detecting gravitational waves. Gravitational waves are omitted when a star explodes, travelling through the cosmos at an exceptional speed. It is estimated that a gravity wave takes only 40 milliseconds to pass through the earth. Thus the aim of this international collaboration is to detect a gravitational wave. To accurately detect such waves, there needs to be several global …

Fox Control In Urban Conservation Reserves: An Analysis Of Bait Uptake And Public Perceptions In The Perth Metropolitan Area, Jennifer Jackson

Theses : Honours

As the world's population becomes increasingly urbanised, the need for people to see nature on their doorstep is becoming more appealing. The city of Perth (Western Australia) has large areas of bushland that have been reserved as conservation estate, and therefore are only minimally modified by urban development. But while many of these urban bushland reserves contribute highly to biodiversity in the form of vegetation, vertebrate surveys have indicated a low diversity of fauna. These areas have the potential to function in a more complete manner as nature reserves with significant conservation value by supporting populations of native animals which …

Albany Eastern Hinterland : Catchment Appraisal 2002, A T. Ryder, L Crossing

Resource management technical reports

The Albany eastern hinterland appraisal area is located to the far east of the Albany Shire, is approximately 104, 770 ha in size and covers the Gnowellen, Pendernup and Sandplain East landcare sub catchments. The objective of Rapid Catchment Appraisal (RCA) is to assess the conditions of, and future risk to, agricultural and natural resources within regional geographic catchments.

A Unifying Field In Logics: Neutrosophic Logic Neutrosophy, Neutrosophic Set, Neutrosophic Probability (In Traditional Chinese), Florentin Smarandache, Feng Liu

Branch Mathematics and Statistics Faculty and Staff Publications

No abstract provided.

Cayley Maps For Certain Cyclic Groups With Odd Generators, Daniel Griswold

UNLV Retrospective Theses & Dissertations

For this thesis I plan on using the AMS format. My Thesis Advisor and I will meet regularly to discuss my thesis topic, prove conjectures, write results as we make progress, develop a program for calculation of genus values under certain constraints, and then organize the work for both oral and written presentation; A Cayley graph provides us with a discrete model for a finite group with specified generating set. It is desirable to represent such structures in their simplest form and also so that certain symmetries are emphasized. By simplest form, we mean to draw these graphs on surfaces …

Effects Of Blood Vessel Permeability On Mechanical Properties Of Bone Under Micro-Gravity Conditions, Robert L Drollinger

UNLV Retrospective Theses & Dissertations

Loss of bone mass is one important physiological change observed in astronauts after medium and long-term exposure to microgravity conditions. The objective of the current study is to test the hypothesis that loss of bone mass under microgravity can be inhibited if the same micro-force distribution under earth gravity (body weight) is achieved by increasing the blood vessel permeability to increase the transcortical interstitial fluid flow. A method of exposure to bio-frequency spectrum (BFS) light (infrared to micrometer wavelength) was used to increase the blood vessel permeability. We tested the hypothesis by examining the bone mechanical properties (Young's modulus) of …

Alternative Route To Licensure In Special Education: A Program Evaluation, Karen Y Kennedy

UNLV Retrospective Theses & Dissertations

Special education teachers are needed nationally. For several reasons, there are not enough special education teachers to accommodate the growing number of students with special education needs. The Clark County School District (CCSD), in Las Vegas, Nevada, suffers from this teacher shortage; The need for special education teachers in CCSD has grown tremendously with the population growth in the past decade. The Alternative Route to Licensure (ARL) Program in Special Education was a response to this need. The ARL program provides CCSD with teachers to fill vacancies in the resource room setting that otherwise may be filled by long-term or …

The Mid-Western Educational Research Association's Annual Meeting, October 15–18, 2003, James A. Salzman, Jane Zaharias

Mid-Western Educational Researcher

Annual Meeting Announcement

Individual Professional Development Plans: In Search Of Learning For Teaching, C. Richele O'Connor, Janet Herrelko

Mid-Western Educational Researcher

This study is the continuation of a 1999 qualitative study in which the researchers examined the implementation of Local Professional Development Committees in the state of Ohio. This descriptive study examined the Individual Professional Development Plans (IPDP) of 133 teachers. Resultant data indicated that, from the wide array of possible selections for professional development (PD) including many that did not have any associated cost, thirteen different types of activities were chosen. The majority of teachers selected the traditional means of earning PD credit: university course work, inservice workshops, and conferences. The research revealed teacher confusion with this new form of …

The State Of Practice In Supply-Chain Management: A Research Perspective, Leroy B. Schwarz

Purdue CIBER Working Papers

In this paper, 1 will describe examples of state-of-the-art practice in supply-chain management; e.g., vendor-managed inventory, quick response, and other contemporary systems, such as Wal-Mart's RetailLink. The perspective will be that of what I call the JDJB Portfolio; i.e., what Information (I), Decision-Making {D), Implementation (I), and Buffer (B) systems are employed in managing real-world supply chains. Most operations-research models consider only two components of this portfolio: the decision-making and the buffer systems. More specifically, most operations-research models involve selecting a decision-rule to minimize expected buffer (e.g., inventory-holding and backorder) cost given a fixed level of information. Implementation as a …

A Fixed-Grid Front-Tracking Algorithm For Solidification Problems. Part I - Method And Validation, C. Y. Li, S V. Garimella, J E. Simpson

CTRC Research Publications

A numerical study of directional solidification has been performed using a fixed-grid front- tracking algorithm. The directional solidification of pure tin, as well as the horizontal Bridgman growth of pure succinonitrile, were investigated. In both cases, the growth front was stable and nondendritic, but was significantly distorted by the influence of convection in the melt and, for the Bridgman growth case, by the translation of temperatures at the boundaries which represents furnace movement. Results obtained for the directional soli- dification of pure tin were found to agree reasonably well with experimental and numerical data for temperatures and front locations obtained …

Simplified Meta-Analysis Of Clinical Trials In Resuscitation, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Objective: To present and demonstrate a new simplified method for synthesizing results of multiple clinical trials in resuscitation research. Methods: The mean difference across studies in the proportion of favorable outcomes between experimental and control groups is calculated. This difference is shown to have a t-distribution. Its significance can be ascertained with a simple t-test. The analysis can be implemented in a one-page computer spreadsheet. Results: Simplified meta-analysis provides high sensitivity and can be extended to include weighting of studies according to size or quality, comparison of subgroups of studies, tests for outliers, and calculation of the power of the …

Experimental Characterization Of Modified And Thin Film Piezoceramic Sensors, Shantharam V. Dravida

Electronic Theses and Dissertations

No abstract provided.

Constraining The Couplings Of Massive Pseudoscalars Using Gravity And Optical Experiments, E. G. Adelberger, E. Fischbach, D. E. Krause, R. D. Newman

Department of Physics and Astronomy Faculty Publications

The simultaneous exchange of two pseudoscalars between fermions leads to a spin-independent force between macroscopic objects. Previous work has demonstrated that one can combine this interaction with tests of the weak equivalence principle, gravitational inverse square law, and studies of laser beam propagation in magnetic fields, to set significant new constraints on the Yukawa couplings of massless pseudoscalars to nucleons. Here we extend these results to massive pseudoscalars, and derive new constraints which relate the strengths of these couplings to the pseudoscalar mass.

Robust Steady-State Filtering For Systems With Deterministic And Stochastic Uncertainties, F. Wang, V. Balakrishnan

Department of Physics and Astronomy Faculty Publications

For uncertain systems containing both deterministic and stochastic uncertainties, we consider two problems of optimal filtering. The first is the design of a linear time-invariant filter that minimizes an upper bound on the mean energy gain between the noise affecting the system and the estimation error. The second is the design of a linear time-invariiint filter that minimizes an up per bound on the asymptotic mean square estimation error when the plant is driven by a white noise. We present filtering algorithms that solve each of these problems, with the filter parameters determined via convex optimization based on linear matrix …

Lorentz Transformation And Vector Field Flows, S. H. Chiu, T. K. Kuo

Department of Physics and Astronomy Faculty Publications

The parameter changes resulting from a combination of Lorentz transformations are shown to form vector field flows. The exact, finite Thomas rotation angle is determined and interpreted intuitively. Using phase portraits, the parameters evolution can be clearly visualized. In addition to identifying the fixed points, we obtain an analytic invariant which correlates the evolution of parameters.

Signal Searching In Return Spectra And Decision Making Using Minimal Integration Time, D. S. Koltick

Department of Physics and Astronomy Faculty Publications

Neutron scanning techniques are becoming important tools in the search for chemical agents, explosives, drugs, nuclear material and other hazardous materials in government buildings, airports, military installations or public areas. Each nucleus when excited emits quanta of gamma radiation at characteristic energies. The element can be physically located and identified by these energy lines. It is important to identify these lines in a minimal amount of time in order to increase the number of items that are searched and to allow fast flow of people and their possessions into and through facilities. This paper develops a mathematical model of the …

Interposed Abdominal Compression Cpr: A Comprehensive Evidence Based Review, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

Interposed abdominal compression (IAC)-CPR includes all steps of standard external CPR with the addition of manual mid-abdominal compressions in counterpoint to the rhythm of chest compressions. IAC-CPR can increase blood flow during CPR about two fold compared to standard CPR without IAC, as shown by 6 of 6 studies in computer models and 19 of 20 studies in various animal models. The addition of IAC has clinical benefit in humans, as indicated in 10 of 12 small to medium sized clinical studies. The technique increases the frequency of immediate return of spontaneous circulation for in-hospital resuscitations from roughly 25% to …

A General Framework For Nonlinear Multigrid Inversion, Seungseok Oh, Adam B. Milstein, Charles A. Bouman, Kevin J. Webb

Department of Electrical and Computer Engineering Technical Reports

A variety of new imaging modalities, such as optical diffusion tomography, require the inversion of a forward problem that is modeled by the solution to a 3-D partial differential equation. For these applications, image reconstruction is particularly difficult because the forward problem is both nonlinear and computationally expensive to evaluate. In this paper, we propose a general framework for nonlinear multigrid inversion that is applicable to a wide variety of inverse problems. The multigrid inversion algorithm results from the application of recursive multigrid techniques to the solution of optimization problems arising from inverse problems. The method works by dynamically adjusting …

Quantum Mechanical Analysis Of Channel Access Geometry And Series Resistance In Nanoscale Transistors, R. Venugopal, S. Goasguen, Supriyo Datta, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

We apply a two-dimensional quantum mechanical simulation scheme to study the effect of channel access geometries on device performance. This simulation scheme solves the nonequilibrium Green’s function equations self-consistently with Poisson’s equation and treats the effect of scattering using a simple approximation inspired by Büttiker. It is based on an expansion of the device Hamiltonian in coupled mode space. Simulation results are used to highlight quantum effects and discuss the importance of scattering when examining the transport properties of nanoscale transistors with differing channel access geometries. Additionally, an efficient domain decomposition scheme for evaluating the performance of nanoscale transistors is …

Design Of Diffractive Optical Elements: Optimality, Scale And Near-Field Diffraction Considerations, Parker Kuhl, Okan K. Ersoy

Department of Electrical and Computer Engineering Technical Reports

In this research, two related research topics were investigated. The first one is the use of scalar diffraction theory for the purpose of simulating and implementing diffractive optical elements (DOEs). The main focus was on the optimal design of computer- generated holograms (CGHs). Two existing methods were combined to improve the reconstructed image of a CGH. The new method combines the Optimal Decimation-in-Frequency Iterative Interlacing Technique (ODIFIIT) with the Lohmann coding scheme. Simulations indicate that the reconstructed image produced with this method has less error than reconstructions with either method alone. Physical reconstructions were performed and compared to the simulated …

Harper & Brothers’ Family And School District Libraries, 1830-1846., Robert S. Freeman

Libraries Faculty and Staff Scholarship and Research

In the 1830s, at the dawn of mass-market publishing, J. & J. Harper of New York began publishing several libraries, including Harper’s Family Library and Harper’s School District Library. A “library” in this sense is a series or set of uniformly bound and uniformly priced books issued by the same publisher. A leading publisher and a major force in the broad religious and social reform movements of the period, the Harper brothers helped to shape education in American homes and schools. As Methodists they were advocates of reading for moral improvement. As innovative publishers, they made full use of the …

On Query Processing And Optimality Using Spectral Locality-Preserving Mappings, Mohamed F. Mokbel, Walid G. Aref

Department of Computer Science Technical Reports

No abstract provided.

Scheduling For Shared Window Joins Over Data Streams, Moustafa A. Hammad, Michael J. Franklin, Walid G. Aref, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.