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Articles 91 - 96 of 96
Full-Text Articles in Risk Analysis
A Refinement Of Risk Analysis Procedures For Trichloroethylene Through The Use Of Monte Carlo Method In Conjunction With Physiologically Based Pharmacokinetic Modeling, William J. Cronin Iv, Eric J. Oswald
A Refinement Of Risk Analysis Procedures For Trichloroethylene Through The Use Of Monte Carlo Method In Conjunction With Physiologically Based Pharmacokinetic Modeling, William J. Cronin Iv, Eric J. Oswald
Theses and Dissertations
This study refines risk analysis procedures for trichloroethylene (TCE) using a physiologically based pharmacokinetic (PBPK) model in conjunction with the Monte Carlo method. The Monte Carlo method is used to generate random sets of model parameters, based on the mean, variance, and distribution types. The procedure generates a range of exposure values for human excess lifetime cancer risk of lxl0 (exp-6), based on the upper and lower bounds and the mean of a 95% confidence interval. Risk ranges were produced for both ingestion and inhalation exposures. Results are presented in a graphical format to reduce reliance on qualitative discussions of …
A Risk Assessment Of The Health Liabilities From Exposure To Toxic Metals Found In The Composted Material Of Air Force Municipal Solid Waste, Timothy L. Merrymon
A Risk Assessment Of The Health Liabilities From Exposure To Toxic Metals Found In The Composted Material Of Air Force Municipal Solid Waste, Timothy L. Merrymon
Theses and Dissertations
This thesis assesses the risk of the health liabilities from exposure to toxic metals found in the composted material of Air Force municipal solid waste (MSW). The goal is to determine the probability that the composted MSW could be a health hazard if it were used as a soil amendment. The research limited the assessment of the exposure risk to heavy metals found in raw MSW and its resulting compost. The thesis uses reviews of present literature to examine the food and soil ingestion exposure pathways. These pathways are assessed using the heavy metal concentrations found in MSW compost and …
Development Of A Cost-Effectiveness Methodology To Prioritize Environmental Mitigation Projects, Robert E. Thompson
Development Of A Cost-Effectiveness Methodology To Prioritize Environmental Mitigation Projects, Robert E. Thompson
Theses and Dissertations
A cost-effectiveness prioritization methodology was developed using concepts from the cost-effectiveness technique. The new methodology called the Cost-Effectiveness methodology (CEM) allows the prioritization of mitigation projects across broad categories of hazardous sites as would be ranked among the offices of the Environmental Protection Agency. Two performance criteria were incorporated into the process--rank projects that save the most lives per dollar and enhance general applicability across different categories of risk. A metric was developed that represents the ratio of lives saved per dollar spent on mitigation alternatives of contaminated environmental sites. This metric was incorporated into the CEM to distinguish mitigation …
Risk Reduction As A Criterion For Measuring Progress Of The Installation Restoration Program, Scott Edwards Jr.
Risk Reduction As A Criterion For Measuring Progress Of The Installation Restoration Program, Scott Edwards Jr.
Theses and Dissertations
To properly manage the Installation Restoration Program (IRP) in the future, the Air Force (AF) needs a method to assess progress based on improvements in environmental conditions. An integral part of evaluating progress toward protecting human health and the environment is the assessment of risk reduction as a result of cleanup actions. The AF currently uses the Defense Priority Model (DPM) to assist in setting priorities for funding remedial actions at IRP sites. The DPM provides a numerical score for IRP sites representing the relative potential risk based on the environmental conditions at a site before remedial actions are taken. …
Risk Identification In Major Weapon Systems Acquisition In The Republic Of China Air Force, Te-Lung Tsai
Risk Identification In Major Weapon Systems Acquisition In The Republic Of China Air Force, Te-Lung Tsai
Theses and Dissertations
This research examined the magnitudes of the performance, supportability, life-cycle cost, schedule, and management risk factors in current Republic of China Air Force (ROCAF) weapon systems acquisition programs and analyzed the risk drivers with respect to those risk factors. Mid-to-high level managers in the ROCAF and Chung-Sun Institute of Science and Technology (CSIST) were surveyed to determine the extent to which various risk factors were contributing to program risk. A total of fifty-four (54) managers responded to the survey. The results indicate: high risks to performance, supportability, life cycle cost, and schedule, and moderate risk to management. Risk-drivers that contributed …
An Investigation Of The Air Force Risk Model, Thomas R. O'Hara
An Investigation Of The Air Force Risk Model, Thomas R. O'Hara
Theses and Dissertations
This study develops a dependent component cost risk model validation methodology and applies it to the Air Force Risk Model. The validation process consists of ensuring that logically consistent input parameters are acted on properly by the cost risk methodology. users of all dependent component risk models must be concerned with logically consistent input parameters. Two criteria define logical consistency. The first is the correlation matrix consistency and the second is the consistency between pairs of cost distributions. Three validation criteria are defined and used to validate a cost risk model. The first criterion is that the process must maintain …