Digital Commons Network^™

South Carolina Naval Wreck Survey Completed, James D. Spirek, Christopher F. Amer

Faculty & Staff Publications

No abstract provided.

Thai Ambassador To Discuss Research, U.S.-Thai Relations During Um-Oxford Visit, Jennifer Southall

University of Mississippi News

OXFORD, Miss. - Thailand's ambassador to the United States, Kasit Piromya, visits the University of Mississippi Monday (March 7) to learn more about the university and deliver a free talk, titled U.S.-Thai Relations, at 2:30 p.m. in the UM Student Union, room 404 A.

An Evolutionary Algorithm To Generate Ellipsoid Detectors For Negative Selection, Joseph M. Shapiro

Theses and Dissertations

Negative selection is a process from the biological immune system that can be applied to two-class (self and nonself) classification problems. Negative selection uses only one class (self) for training, which results in detectors for the other class (nonself). This paradigm is especially useful for problems in which only one class is available for training, such as network intrusion detection. Previous work has investigated hyper-rectangles and hyper-spheres as geometric detectors. This work proposes ellipsoids as geometric detectors. First, the author establishes a mathematical model for ellipsoids. He develops an algorithm to generate ellipsoids by training on only one class of …

Reconstruction Of Chromotomographic Imaging System Infrared Hyperspectral Scenes, Malcolm G. Gould

Theses and Dissertations

Hyperspectral imagery providing both spatial and spectral information has diverse applications in remote sensing and scientific imaging scenarios. The development of the Chromotomographic Imaging System (CTIS) allows simultaneous collection of both spatial and spectral data by a two-dimensional (2D) focal plane detector array. Post-processing of the 2D detector data reconstructs the three-dimensional (3D) hyperspectral content of the imaged scene. This thesis develops Estimation Theory based algorithms for reconstructing the hyperspectral scene data. The initial algorithm developed reconstructs the 3D hyperspectral scene data cube. An additional algorithm reconstructs a matrix comprised of one spectral dimension and one compound spatial dimension. This …

Lethality Of Bacillus Anthracis Spores Due To Short Duration Heating Measured Using Infrared Spectroscopy, Kristina M. Goetz

Theses and Dissertations

There are a number of analytical and semi-empirical models that describe the behavior of particulate matter in the atmosphere. Many of these require modification for all types of weather, dry versus wet deposition, and overall effects can be quite non-linear. Rainfall (rate, drop size, etc.), snowfall (rate, flake size, etc.), humidity, pressure, temperature, and combination of these greatly affect particle settling and washout rates. To that end, a method for tracking released constituents using the Regional Atmospheric Modeling System (RAMS) microphysics package is developed by modifying one of the hydrometeor categories (hail) in the microphysics package. The RAMS microphysics package …

Modeling Groundwater Flow And Contaminant Transporting Fractured Aquifers, Jason M. Bordas

Theses and Dissertations

The hybrid discrete fracture network/equivalent porous medium (DFN/EPM) model was selected for analysis and application to simulate a contaminated site in this study. The DFN/EPM was selected because it appeared to have the potential to aid decision making by remedial project managers at contaminated DoD fractured aquifer sites. This model can use data that are typically available at a site while incorporating the important processes relevant to describing contaminant transport in a fractured medium. The model was applied to simulate the operation of a pump-and-treat remedial action at a trichloroethene-contaminated fractured aquifer at Pease AFB. The model was able to …

A Comparison Of The Heft Subsurface And Delfic Particle Size Distributions And Effects In Hpac, Eric T. Skaar

Theses and Dissertations

The Heft subsurface three component lognormal fallout particle size distribution is compared and contrasted with the single lognormal fallout particle size distribution used by the Defense Land Fallout Interpretive Code (DELFIC). Comparison of the two distributions is accomplished with results from the AFIT smear code and the Hazard Prediction and Assessment Capability (HPAC). The effect of the distributions is explored in HPAC for varying yield weapons, varying surfaces, precipitation conditions, varying wind effects and varying dose rate times. The results from the two distributions are quantitatively compared using the concepts of grounded source normalization constant and the rate at which …

Air Force Jp-8 Fuel Distribution System: A Statistical Analysis To Determine Where And When To Sample, Eric J. Heath

Theses and Dissertations

The Air Force Petroleum Office at Wright-Patterson Air Force Base, Ohio collects JP-8 sampling data, but this data doesn't undergo analysis to determine the health of the base-level JP-8 fuel distribution system. Commanders possess no known confidence level when assessing base-level fuel health. Therefore, the objective of this research is to assess Air Force base-level fuel sampling data to determine the base-level sampling point that ensures a quality and healthy product at the aircraft. Also, this research seeks to identify how often correlation sampling should take place. Sample test pass rates are analyzed from three locations, receipt, storage, and vehicles/aircraft, …

Using Value-Focused Thinking To Evaluate The Practicality Of Ground-Source Heat Pumps At Military Installations, Jimmy J. Jeoun

Theses and Dissertations

Because of potential cost and energy savings, military decision-makers may want to consider the use of energy-efficient heating, ventilating, and air-conditioning (HVAC) systems at their installations. Ground source heat pumps (GSHPs), in particular, show great promise because of their low energy requirements and low life-cycle costs. However, there currently exists no design guidance or established criteria for HVAC selection. Consequently, military decision-makers have no basis for comparing conventional HVAC systems and GSHPs. The Value-Focused Thinking (VFT) methodology was used to create a multi-objective decision analysis model that measures the value of different HVAC systems. Consisting of five bottom-tier values and …

Selection And Application Of Distorted Risk Measures, Edwin J. Offutt

Theses and Dissertations

This thesis develops and illustrates a methodology for the selection of probability distributions and distortion functions associated with risk scenarios resulting from military capability shortfalls. Distorted (or transformed) risk measures are analyzed and applied to account for loss scenarios that may occur with low frequency but result in catastrophic outcomes. After reviewing the rudimentary concepts of distortion, four well-known continuous distributions, suitable for modeling risk scenarios, are chosen using defined criteria. Based on subject matter expert inputs, a simple method for assigning exactly one of the four distributions to any risk scenario is proposed. Four parametric distortion functions from the …

Optimal Sampling Of A Chemical Hazard Area, Jennifer R. Plourde

Theses and Dissertations

This thesis proposes a methodology for optimally sampling a chemical hazard area subsequent to a chemical weapons attack. The objective is to identify the maximum number of areas that no longer require protective gear for safe operations. We model the area as an undirected graph and employ network analysis techniques to provide a methodological framework for identifying an optimal sampling sequence within a fixed time limit. We propose four models that characterize the secondary vapor concentrations: i) static and deterministic, ii) static and stochastic, iii) dynamic and deterministic, and iv) dynamic and stochastic. Comparisons of the static cases and their …

An Evaluation Of Wind Turbine Technology At Peterson Afb, Randy C. Combs

Theses and Dissertations

Wind energy technology is a viable source for attaining the emission reduction and renewable energy use goals set forth by the executive office. In accordance with Executive Orders, the Air Force must reduce greenhouse emissions and energy consumption, and expand the use of renewable energy sources within its facilities nation-wide by year 2010. This mandate requires that the Air Force look at alternative electrical production and rely more on such renewable energy resources as wind power. The specific problem addressed by this research is whether on-site wind energy generation can be more economically feasible than the conventional energy consumption at …

Usable Design Of Civil Engineer Information Systems, Gunther Kastenholz

Theses and Dissertations

This research used a case study methodology where one instrument used to collect data was a heuristic usability inspection method. Data was collected from a literature review of pertinent Civil Engineer information system design documents, and conclusions drawn about the existing level of specification of usability engineering principles. The heuristic usability inspection method was used to validate the conclusions drawn through inspection of an information system representative of other Civil Engineer information systems, the Automated Civil Engineer System Personnel Readiness module.

Modeling Application Of Hydrogen Release Compound To Effect In Situ Bioremediation Of Chlorinated Solvent-Contaminated Groundwater, Ryan C. Wood

Theses and Dissertations

This study investigates how application of Hydrogen Release Compound (HRC) might be implemented to remediate a site contaminated with tetrachloroethene (PCE) or its daughter products, under varying site conditions. The 3-D reactive transport model RT3D was coupled with a dual-Monod biodegradation submodel to simulate the effect of the hydrogen generated by HRC on accelerating the biodegradation of dissolved chlorinated solvents. Varying site conditions and injection well configurations were investigated to determine the effect of these environmental and design conditions on overall treatment efficiency. The model was applied to data obtained at a chlorinated solvent contaminated site at Vandenberg AFB, where …

An Investigation Into Palladium-Catalyzed Reduction Of Perchlorate In Water, Eric G. Barney

Theses and Dissertations

In this study, application of a catalytic reactor to facilitate chemical reduction of perchlorate was investigated. Palladium-coated pellets were used as the catalyst, and formic acid was used as the reductant. Reactor performance was evaluated under a variety of operating conditions (influent pH, reductant concentration, residence time). Very little perchlorate reduction was observed under any operating condition. At best, approximately 8% perchlorate reduction was observed. This small reduction efficiency is clearly not sufficient for environmental treatment applications. Perchlorate strongly adsorbed to the catalyst at low pH (3 - 3.3). At higher pH (4 - 10), little adsorption was observed. This …

Validation Of An Innovative Groundwater Contaminant Flux Measurement Method, Seh J. Kim

Theses and Dissertations

The ability to measure groundwater contaminant flux is increasingly being recognized as crucial in order to prioritize contaminated site cleanups, estimate the efficiency of remediation technologies, measure rates of natural attenuation, and apply proper source terms to model groundwater contaminant transport. An innovative mass flux measurement method using horizontal flow treatment wells (HFTWs) was developed recently to compensate for the disadvantages of other flux measurement methods that are being used. Flux measurement methods can be categorized as either point methods or integral methods. As the name suggests, point methods measure flux at a specific point or points in the subsurface. …

Removal Of Cyclohexane From A Contaminated Air Stream Using A Dense Phase Membrane Bioreactor, Michael G. Roberts

Theses and Dissertations

The purpose of this research was to determine the ability of a dense phase membrane bioreactor to remove cyclohexane, a volatile organic compound in JP-8 jet fuel, from a contaminated air stream using a biologically active film for degradation. The research answered questions regarding applications of membrane bioreactors, the ability of cyclohexane to diffuse through a dense phase membrane, growth of a viable microbial culture, and determination of the performance capabilities of the reactor. To answer these questions, a literature review was conducted and laboratory experiments were performed. Through the design, construction, and testing of the dense phase membrane bioreactor …

Weapon Release Scheduling From Multiple-Bay Aircraft Using Multi-Objective Evolutionary Algorithms, Francis R. Lyons Iv

Theses and Dissertations

The United States Air Force has put an increased emphasis on the timely delivery of precision weapons. Part of this effort has been to us multiple bay aircraft such the B-1B Lancer and B-52 Stratofortress to provide Close Air Support and responsive strikes using 1760 weapons. In order to provide greater flexibility, the aircraft carry heterogeneous payloads which can require deconfliction in order to drop multiple different types of weapons. Current methods of deconfliction and weapon selection are highly crew dependent and work intensive. This research effort investigates the optimization of an algorithm for weapon release which allows the aircraft …

Developing New Multidimensional Knapsack Heuristics Based On Empirical Analysis Of Legacy Heuristics, Yong Kun Cho

Theses and Dissertations

The multidimensional knapsack problem (MKP) has been used to model a variety of practical optimization and decision-making applications. Due to its combinatorial nature, heuristics are often employed to quickly find good solutions to MKPs. While there have been a variety of heuristics proposed for the MKP, and a plethora of empirical studies comparing the performance of these heuristics, little has been done to garner a deeper understanding of heuristic performance as a function of problem structure. This dissertation presents a research methodology, empirical and theoretical results explicitly aimed at gaining a deeper understanding of heuristic procedural performance as a function …

Earmstrong, Armstrong Atlantic State University

Armstrong News & Publications: e-Armstrong Newsletter (Archived)

No abstract provided.

Race, Trust, Altruism, And Reciprocity, George W. Dent Jr.

University of Richmond Law Review

No abstract provided.

The Behavioral Phenolype Of Children With Velocardiofacial Syndrome, Janice Lyanne Enriquez

Loma Linda University Electronic Theses, Dissertations & Projects

Velocardiofacial syndrome (VCFS) is one of the most common genetic, congenital diseases to date. The clinical symptoms of patients with VCFS have included up to 180 medical and psychological features, such as velopharyngeal insufficiency, cleft palate, schizophrenia or bipolar disorder, cognitive limitations, and behavioral or speech or language difficulties. The purpose of this study was to examine early personality patterns associated with VCFS, and to identify whether variables, including maternal personality, parent-child interaction, and family environment, moderated the relationship between children's personality and behavior. The Hierarchical Personality Inventory for Children (HiPlC), NEO Five-Factor Inventory (NEO-FFl), Parenting Stress Index (PSl), Family …

Attributional Styles Of Women Who Quit Or Reduce Smoking In The Antepartum, Patricia T. Alpert

Loma Linda University Electronic Theses, Dissertations & Projects

Background: Researchers in the field of smoking have sought to identify variables that predict whether or not pregnant smokers stop or continue to smoke. Most variables examined are demographic in nature and little is known about psychological variables associated with those who quit or reduce smoking while pregnant.

Purpose: To analyze attributional style and locus of control to determine which factors alone, or in combination, are associated with quitting versus reduced smoking among pregnant smokers.

Methodology: Pregnant smokers who quit (n = 66) or reduced their smoking (n = 43) were identified by the nursing staff at a women’s county …

Ethnic Identity And Body Ideal In Adolescent Girls, Erin E. Ramirez

Loma Linda University Electronic Theses, Dissertations & Projects

Adolescence is a period characterized by physical growth and maturation (Cobb, 1995). This normal biological process moves most American girls away from the thin ideal body shape that is dominant within the United States. Ethnic differences in ideal body size have in fact been found in several studies; but they have been shown based on ethnic group membership, not ethnic identification. The specific relationship of ethnic identity and body ideal for Mexican American, African American, and Anglo American adolescent females has not been clearly defined; Lopez, Blix, and Blix (1995) have hinted at the role of ethnic identification (through the …

Justification For Class Iii Permit Modification March 2005, Swmu 2, Operable Unit 1303 Classified Waste Landfill At Technical Area Ii, Sandia National Laboratories/Nm

Regulatorily Completed

This technical document contains the Justification for the Class III Permit Modification request for Site 2. Contained within this document is the history of the site, descriptions of any investigations and/or remediation completed at the site, the regulatory background, and the rationale for the proposed future land-use of these sites.

The Bg News March 1, 2005, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. March 1, 2005. Volume 95-Issue 110.

Multiscale Segmentation With Vector-Valued Nonlinear Diffusions On Arbitrary Graphs, Xiaogang Dong, Ilya Pollak

Department of Electrical and Computer Engineering Technical Reports

We propose a novel family of nonlinear diffusion equations and apply it to the problem of segmentation of multi-valued images. We show that this family can be viewed as an extension of stabilized inverse diffusion equations (SIDEs) which were proposed for restoration, enhancement, and segmentation of scalar-valued signals and images in [39]. Our new diffusion equations can process vector-valued images defined on arbitrary graphs which makes them well suited for segmentation. In addition, we introduce novel ways of utilizing the shape nformation during the diffusion process. We demonstrate the effectiveness of our methods on a large number of texture segmentation …

Effects Of An Impedance Threshold Valve Upon Hemodynamics In Standard Cpr: Studies In A Refined Computational Model, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

An impedance threshold valve (ITV) is a new airway adjunct for resuscitation that permits generation of a small vacuum in the chest during the recoil phase of chest compression. Objectives: To explore in detail the expected magnitude and the hemodynamic mechanisms of circulatory augmentation by an ITV in standard CPR. Method: A 14-compartment mathematical model of the human cardiopulmonary system—upgraded to include applied chest compression force, elastic recoil of the chest wall, anatomic details of the heart and lungs, and the biomechanics of mediastinal compression—is exercised to explore the conditions required for circulatory augmentation by an ITV during various modes …

An Introduction To The Work Of Elfriede Jelinek, Nobel Laureate In Literature 2004, Andrea Bandhauer

CLCWeb: Comparative Literature and Culture

In her paper, "An Introduction to the Work of Elfriede Jelinek, Nobel Laureate in Literature 2004," Andrea Bandhauer explores reactions of the press to the Austrian writer Elfriede Jelinek after she received the 2004 Nobel Prize in Literature. Bandhauer discusses how the extreme irritation following this announcement was frequently directed at the author's public persona rather than at her work. Against this background, Bandhauer explores the ambivalent relationship of the public towards a politically and socially engaged and outspoken public figure who in her literary work produces highly hermetical texts. As a writer, Jelinek is preoccupied with language and form …

Generic Identity And Intertextuality, Marko Juvan

CLCWeb: Comparative Literature and Culture

In his paper, "Generic Identity and Intertextuality," Marko Juvan proposes that an anti-essentialist drive -- a characteristic of recent genology -- has led postmodern scholars to the conviction that genre is but a system of differences and that its matrix cannot be deduced from a particular set of apparently similar texts. Juvan argues that the concept of intertextuality may prove advantageous to explain genre identity in a different way: genres exist and function as far as they are embedded in social practices that frame intertextual and meta-textual links/references to prototypical texts or textual series. In Juvan's view, genres are cognitive …