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Modeling Groundwater Flow And Contaminant Transporting Fractured Aquifers, Jason M. Bordas
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 …
Using Value-Focused Thinking To Evaluate The Practicality Of Ground-Source Heat Pumps At Military Installations, Jimmy J. Jeoun
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
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
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
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 …
Detection Of Bacillus Spores By Aptamer Selectivity Using Atomic Force Microscopy, Nina M. Houtkooper
Detection Of Bacillus Spores By Aptamer Selectivity Using Atomic Force Microscopy, Nina M. Houtkooper
Theses and Dissertations
The anthrax attack of Oct 2001 demonstrates the need for a rapid detector for spores of Bacillus anthracis (BA). Current technology requires cultures of BA to be grown for 24 hours. Using aptamers, a type of nucleic acid ligand selective for a target molecule, to select BA spores for measurement without culturing is a possible solution for quicker detection. An aptamer having a specially selected structure is expected to selectively bind to the surface of its target spore, separating it from other material. An atomic force microscopy (AFM) method was developed to test this selectivity. Aptamers having structure selected to …
A Comparison Of Hazard Predication And Assessment Capability (Hpac) Software Dose-Rate Contour Plots To A Sample Of Local Fallout Data From Test Detonations In The Continental United States, 1945-1962, Richard W. Chancellor
A Comparison Of Hazard Predication And Assessment Capability (Hpac) Software Dose-Rate Contour Plots To A Sample Of Local Fallout Data From Test Detonations In The Continental United States, 1945-1962, Richard W. Chancellor
Theses and Dissertations
A comparison of Hazard Prediction and Assessment Capability (HPAC) software dose-rate contour plots to a sample of local nuclear fallout data from test detonations in the continental United States, 1945 - 1962, is performed. Fallout data from test detonations is obtained from "Compilation of Local Fallout Data from Test Detonations 1945- 1962 Extracted from DASA 1251, Volume I - Continental U.S. Tests." This report contains fallout plots and radiation contours for each test in the atmospheric nuclear test program conducted by the United States prior to 1963. These plots are compared with the plots resulting from Defense Threat Reduction Agency's …
Air Force Jp-8 Fuel Distribution System: A Statistical Analysis To Determine Where And When To Sample, Eric J. Heath
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, …
On The Use Of Surrogate Functions For Mixed Variable Optimization Of Simulated Systems, John E. Dunlap
On The Use Of Surrogate Functions For Mixed Variable Optimization Of Simulated Systems, John E. Dunlap
Theses and Dissertations
This research considers the efficient numerical solution of linearly constrained mixed variable programming (MVP) problems, in which the objective function is a black-box stochastic simulation, function evaluations may be computationally expensive, and derivative information is typically not available. MVP problems are those with a mixture of continuous, integer, and categorical variables, the latter of which may take on values only from a predefined list and may even be non-numeric. Mixed Variable Generalized Pattern Search with Ranking and Selection (MGPS-RS) is the only existing, provably convergent algorithm that can be applied to this class of problems. Present in this algorithm is …
Usable Design Of Civil Engineer Information Systems, Gunther Kastenholz
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.
In Vitro Toxicity Of Cadmium Oxide Particles In Brl 3a Rat Liver Cells, Janice M. Shelley
In Vitro Toxicity Of Cadmium Oxide Particles In Brl 3a Rat Liver Cells, Janice M. Shelley
Theses and Dissertations
For the last decade or so, in vitro toxicology has been studied as a method for determining human toxicity, as well as hazard identification and characterization. One purpose of in vitro studies is to determine the possibility of developing systems in which the toxicity of chemicals can be quantified, without heavy reliance on animal experimentation. Specific data pertaining to cadmium toxicity in humans through use of in vitro methods and models is sparse, at best. There is a need to complete more studies and collect more data to study particular chemicals and their effects and to complete proper evaluation and …
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 …
A Genetic Algorithm For Uav Routing Integrated With A Parallel Swarm Simulation, Matthew A. Russell
A Genetic Algorithm For Uav Routing Integrated With A Parallel Swarm Simulation, Matthew A. Russell
Theses and Dissertations
This research investigation addresses the problem of routing and simulating swarms of UAVs. Sorties are modeled as instantiations of the NP-Complete Vehicle Routing Problem, and this work uses genetic algorithms (GAs) to provide a fast and robust algorithm for a priori and dynamic routing applications. Swarms of UAVs are modeled based on extensions of Reynolds' swarm research and are simulated on a Beowulf cluster as a parallel computing application using the Synchronous Environment for Emulation and Discrete Event Simulation (SPEEDES). In a test suite, standard measures such as benchmark problems, best published results, and parallel metrics are used as performance …
Calorespirometric Evidence For Adaptation Of Blackbrush And Shadscale To Growth Season Temperatures In Cold Deserts, Heidi A. Summers
Calorespirometric Evidence For Adaptation Of Blackbrush And Shadscale To Growth Season Temperatures In Cold Deserts, Heidi A. Summers
Theses and Dissertations
Coleogyne ramosissima Torr. (blackbrush) and Atriplex confertifolia [Torr. & Frem.] Wats. (shadscale) are cold desert shrubs from different families that often grow together in the Great Basin and the Colorado Plateau in the life zone between 800 and 2000 m elevation. Tissue and seeds from the two species were collected from several localities. Metabolic heat and carbon dioxide production rates were measured with calorespirometry on tissue from field-grown plants and on seedlings at temperatures from 5 to 35°C at 5°C intervals. Blackbrush adapts to higher temperatures earlier than does shadscale, and once it has adjusted to higher temperatures, anabolic rates …
Computer-Simulation-Assisted Lean Manufacturing Training, Luoding Wang
Computer-Simulation-Assisted Lean Manufacturing Training, Luoding Wang
Theses and Dissertations
This thesis assesses the potential of using computer simulation to aid existing lean manufacturing training methods such as lecture and live simulation. An investigation of this possibility was carried out in conjunction with UMEP's Lean 101 class. In the study, two experimental computer simulation models demonstrating the push and pull production scenarios were constructed using ProModel software. Simulation models were equipped with a Visual Basic interface to aid trainees to manipulate the model via ActiveX. Constructed computer simulation was compared with live simulation to answer these research questions: 1. Was computer simulation able to teach additional lean concepts not covered …
Analysis Of The Learning-Style Preferences Of Entry-Level, Upper-Division Undergraduate/Graduate Students In Allied Health Identified With Analytic And Global Format Learning-Style Assessments, Dawn Marie Morton-Rias
Analysis Of The Learning-Style Preferences Of Entry-Level, Upper-Division Undergraduate/Graduate Students In Allied Health Identified With Analytic And Global Format Learning-Style Assessments, Dawn Marie Morton-Rias
Theses and Dissertations
The purpose of this researcher was to identify learning styles of undergraduate and graduate students in allied health and to examine correlations among identified learning-style scores and students’ gender, ethnicity, and age. The goals were to compare learning-style preferences and provide students, faculty, staff, and administrators with empirical information on student learning. One hundred and fifty-four ethnically diverse students participated in the study. The Productivity Environmental Preference Survey (PEPS) (Dunn & Dunn, & Price, 1996) and Building Excellence (BE) (Rundle & Dunn, 2000) were completed by a sample of 87 students. Correlation analyses confirmed relationships between student learning-styles identified with …
The Effect Of Sample Size On Rapid Bioassessment Scores And Management Efficiency, Uttam Kumar Rai
The Effect Of Sample Size On Rapid Bioassessment Scores And Management Efficiency, Uttam Kumar Rai
Theses and Dissertations
The rapid bioassessment method for stream bio monitoring generally uses a fixed count of 200 macro invertebrates as the standard subsample size. This number has been argued to be too small to provide accurate estimates on the richness of macro invertebrate communities and is believed to give misleading information pertaining to stream health. In this study, I used data collected from multiple habitats from 29 streams located in several subecoregions of Georgia to examine how the rapid bioassessment scores perform across subsample sizes of 100, 200, and 300 organisms. Subsample sizes of 100 and 200 organisms were found to underestimate …
Mcmi-Iii Patterns Of Adults With Attention-Deficit/Hyperactivity Disorder And/Or Learning Disorder, Peter A. Schmutzer
Mcmi-Iii Patterns Of Adults With Attention-Deficit/Hyperactivity Disorder And/Or Learning Disorder, Peter A. Schmutzer
Theses and Dissertations
No abstract provided.
Hydrology Of The Springs, Seeps, And Fens At The Nature Conservancy's Pigeon Point Preserve, Ransom County, North Dakota, Corey W. Askin
Hydrology Of The Springs, Seeps, And Fens At The Nature Conservancy's Pigeon Point Preserve, Ransom County, North Dakota, Corey W. Askin
Theses and Dissertations
Pigeon Point lies along the Sheyenne River in the west-central part of the Sheyenne Delta Aquifer, southeastern North Dakota. Groundwater discharges along a north-facing bluff at Pigeon Point and forms springs, seeps, and fens 'hosting atypical boreal species. The Nature Conservancy owns 231 ha at Pigeon Point, a tract that also includes the largest and least disturbed spring-fed stream in the region as well as some of the finest riparian forest in the state. In response to possible future groundwater diversion, the objectives of this study are: 1) to characterize the Sheyenne Delta Aquifer up-gradient from Pigeon Point, 2) to …
Sampling Analysis Of Tar And Particulate In The Producer Gas From Downdraft Gasifier, Srinivas Kolli
Sampling Analysis Of Tar And Particulate In The Producer Gas From Downdraft Gasifier, Srinivas Kolli
Theses and Dissertations
No abstract provided.
Teen Mothers' Perceptions Of Medicalization And The Patient/Provider Relationship, Preston Martin-Lyon
Teen Mothers' Perceptions Of Medicalization And The Patient/Provider Relationship, Preston Martin-Lyon
Theses and Dissertations
Within the past twenty years, a great deal of research has addressed pregnancy and childbirth in the United States. Often, however, prior studies have focused on white middle-class women and have neglected the experiences of women of color and low-income women. Teen mothers have also been marginalized in past research. With few exceptions, the limited research that does exist on African American teen mothers is usually framed around the "teen pregnancy crisis" in the U.S; seldom are teens included in studies dealing with the overall issue of medicalization. In an effort to understand the extent to which the medical model …
Isotopic Tracers As Evidence Of Denitrification In The Karlsruhe Aquifer, Eben J. Spencer
Isotopic Tracers As Evidence Of Denitrification In The Karlsruhe Aquifer, Eben J. Spencer
Theses and Dissertations
The Karlsruhe Aquifer of north-central North Dakota has experienced considerable nitrate contamination sparking an investigation by the North Dakota State Water Commission. Certain portions of the aquifer have experienced nitrate-N concentrations of up to seven times the drinking water standard. Although contamination is evident it is possible the NO₃¯ is naturally being eliminated by denitrification, whereby bacteria reduce NO₃¯ to nitrogen gas. Evidence of denitrification may be illustrated by accelerated reduction of NO₃¯ relative to the conservative tracer Cl¯ coupled with an increase in the heavy isotopes of 15N and 18O within the NO₃¯ ion. Such an increase is not …
Remediation Techniques For Removal Of 2,4-Dnt From Concrete & Estimation Of Diffusion Coefficient Of N-Hexadecane In Concrete, Sachin Phutane
Remediation Techniques For Removal Of 2,4-Dnt From Concrete & Estimation Of Diffusion Coefficient Of N-Hexadecane In Concrete, Sachin Phutane
Theses and Dissertations
No abstract provided.
Destabilizing Gender : Hemingway's The Garden Of Eden And Winterson's Written On The Body, Daniela Marinova Koleva
Destabilizing Gender : Hemingway's The Garden Of Eden And Winterson's Written On The Body, Daniela Marinova Koleva
Theses and Dissertations
No abstract provided.
Childhood Physical, Sexual, And Domestic Abuse Predictors Of Adult Mmpi-2 Psychiatric Symptoms, Brian K. Moe
Childhood Physical, Sexual, And Domestic Abuse Predictors Of Adult Mmpi-2 Psychiatric Symptoms, Brian K. Moe
Theses and Dissertations
No abstract provided.
Adolescent High-Risk Behavior And Individual Resilient Qualities, Beth J. Zavalney
Adolescent High-Risk Behavior And Individual Resilient Qualities, Beth J. Zavalney
Theses and Dissertations
No abstract provided.
Syntheses And Characterizations Of Diazaphosphasiletidines, Diazasilastibetidines, And Their Metal Complexes, Brian K. Wegley
Syntheses And Characterizations Of Diazaphosphasiletidines, Diazasilastibetidines, And Their Metal Complexes, Brian K. Wegley
Theses and Dissertations
No abstract provided.
Child's Temperament And Conscious Sedation Outcomes, Jennifer Mark Dixon
Child's Temperament And Conscious Sedation Outcomes, Jennifer Mark Dixon
Theses and Dissertations
The purpose of this study was to investigate the role of child temperament and its effect on the outcome of conscious sedation using the following agents: Chloral Hydrate (35mg/kg), Meperidine (2mg/kg), and Hydroxyzine (2mg/kg).The Emotionality, Activity, Sociability (EAS) Temperament Survey for Children was used to measure the child's temperament. The temperament survey measures three realms (Emotionality, Activity, Sociability/Shyness). The sedation outcomes were rated using the modified North Carolina Behavior Rating Scale (NCBRS) from 1-4 (Quiet, Annoyed, Upset, and Wild). The final sample population consisted of 34 children, 24 girls (71%) and 10 boys (29%), ranging in age from 0-9 years …
Habitat Selection In Four Sympatric Small Mammal Species And The Effects Of Potential Predators On Peromyscus Leucopus, Adam Daniel Chupp
Habitat Selection In Four Sympatric Small Mammal Species And The Effects Of Potential Predators On Peromyscus Leucopus, Adam Daniel Chupp
Theses and Dissertations
I examined the effects of potential predators in relation to habitat selection in Peromyscus leucopus. I also examined habitat selection in three other sympatric species (Blarina brevicauda, Blarina carolinensis, Sorex longirostris). I utilized data fiom 49 sampling sites on National Park Service land; Petersburg National Battlefield Eastern Front Unit (15), Five-Forks Unit (17), Appomattox Court House National Historical Park (15) and Booker T. Washington National Monument (12). Sites were categorized by location (park unit) and habitat type (i.e. bottom-land hardwood), and the microhabitat within each sampling site was characterized by four variables (% cover of grasses, herbs, shrubs, and volume …
Identification Of The Pla2 Responsible For Prostanoid Synthesis In Response To Inflammatory Cytokines, Chaminda Fernando
Identification Of The Pla2 Responsible For Prostanoid Synthesis In Response To Inflammatory Cytokines, Chaminda Fernando
Theses and Dissertations
Preliminary studies from our laboratory showed that cPLA2α may be responsible for approximately 50-60% of the PGE2 production in response to inflammatory cytokines. Thus, we hypothesized that a closely-related PLA2 is responsible for 40-50% of the PGE2 produced in response to inflammatory cytokines. To this end, we utilized RNAi technology, extensively optimized, to down regulate the expression of closely-related isoforms of phospholipase A2 in A549 cells and used an enzyme linked immuno sorbent assay (ELISA) to quantitate the PGE2 produced. These studies found that cytosolic phospholipase A2α (cPLA2α) regulated 97.7% of the prostaglandin E2 (PGE2) produced in response to inflammatory …