Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Sensitivity and uncertainty"”.
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Mechanistic, sensitivity, and uncertainty studies of the atmospheric oxidation of dimethylsulfide
The global-scale emissions and reactivity of dimethylsulfide (CH3SCH3, DMS) make it an integral component in the atmospheric sulfur cycle. DMS is rapidly oxidized in the atmosphere by a complex gas-phase mechanism involving many species and reactions. The resulting oxidized sulfur-bearing products …
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Regional earthquake loss estimation : role of transportation network, sensitivity and uncertainty, and risk mitigation
… populated areas such as the 1994 Northridge and 1995 Kobe events have caused extensive damage to the physical infrastructure and losses to the regional and national economies. Economic losses are due in part to direct damage and in part to business interruption caused by non- functioning …
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Sensitivity and uncertainty analysis in hydrological modeling: a case study of South Chickamauga Creek watershed using BASINS/HSPF
Sensitivity and uncertainty analyses are crucial for the quality control and application of hydrological models in water resources management. While sensitivity analysis identifies major input parameters affecting model response, uncertainty analysis evaluates the uncertainty in model predictions. …
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Probabilistic Flood Risk Assessment Under Climate Change Scenarios in the Humber River Watershed
… in the Humber River watershed. The economic and social damages are quantified under current and future climate conditions. First current and future stochastic precipitation maps are generated. The future precipitations consider the climate scenarios from the IPCC AR5 for three time periods. …
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Optimal Sizing of Power Generation Systems Based on Multi Criteria Decision Making (MCDM)
… of the system caused by wind power variability and solar radiation intermittency, the optimal balance between these two energy sources requires particular attention to achieve a good engineering solution. This thesis deals with the optimal sharing and sizing of PV-WT by adopting different Multi …
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Major Weapon Systems Acquisition and Life Cycle Cost estimation: a case study
… Therefore, it is imperative for program managers and acquisition practitioners to make informed decisions not only considering the up-front costs, which are related to fielding of the system, but considering all the costs expected to be incurred throughout the system's planned life. In this study, …
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Towards a paradigm shift in the modeling of soil organic carbon decomposition for earth system models
<p>Soils are the largest terrestrial carbon pools and contain approximately 2200 Pg of carbon. Thus, the dynamics of soil carbon plays an important role in the global carbon cycle and climate system. Earth System Models are used to project future interactions between terrestrial ecosystem carbon …
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MIDAS : minor incident decision analysis software
… as an advisory tool for plant decision makers and operators to analyze the available decision alternatives for resolving minor incidents. The minor incidents dealt with in this thesis include non- safety related component failure, equipment maintenance, inspection or testing. MIDAS implements …
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Evaluation of hydraulic roughness routines and properties in the presence of vegetation
… predicting flow resistance in vegetated channels and floodplains are needed in order to address the needs of modern river engineering. To this end, the objectives of this research were: (1) to evaluate methods for determining hydraulic roughness within open channels in the presence of vegetation, …
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Uncertainty analysis in ecological risk assessment modeling
… Monte Carlo simulations for assessing parameter and risks as probabilistic distributions was used in an ecological risk assessment (ERA) model to characterize risk and address uncertainty. This study addresses the following sources of uncertainty: parameter inputs in the ERA models, risk …
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Performance assessment and enhancement of precision controlled structures during conceptual design
… optical space systems such as interferometers and filled-aperture telescopes will extend the resolution and sensitivity offered by their on-orbit and ground-based predecessors. These systems face the challenge of achieving nanometer and milli-arcsecond precision control of stellar light passing …
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Integrated Thermal Design and Optimization Study for Active Integrated Power Electronic Modules (IPEMs)
… result of the introduction of high power density and integrated modules. It has also been realized that higher temperatures do affect reliability due to a variety of physical failure mechanisms that involve thermal stresses and material degradation. Therefore, it is important to consider …
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Three dimensional water quality modeling in a shallow lake with complex morphometry; implications for coolwater fish habitat under changing climate
… have a significant water quality heterogeneity and hydrodynamic gradients that require a three dimensional (3D) model to accurately capture their temporal and spatial dynamics. The objectives of this research were to evaluate and apply a 3D coupled hydrodynamic and ecological model to a …
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Improvement of simulating BMPs and LID practices in L-THIA-LID model
<p>Best management practices (BMPs) and low impact development (LID) practices are popular approaches used to reduce the negative impacts of urbanization on hydrology and water quality. To assist planners and decision-makers in urban development projects, user-friendly tools are needed to assess …
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An operational method for assessing traffic-related air pollution in urban streets
… quality has been a topic of major public concern and scientific research in recent years. Several theoretical and experimental studies have focused on the assessment of air quality within street canyons and other microenvironments (intersections, motorways, parking spaces, etc.), where population …
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Engineering efficient desalination systems: Materials development and systems analysis in capacitive deionization
Climate change and population growth are increasingly rendering traditional water sources inadequate in many regions. Accordingly, desalination of unconventional water sources such as brackish aquifers, which has been historically cost prohibitive, will be necessary to provide more sustainable …
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Conversion of waste organic carbon and nutrient streams to renewable fuels through integrated biological funneling and catalytic hydrothermal upgrading
Increasing societal energy demands linked to growing wastewater generation and treatment costs have led to a growing impetus for wastewater treatment plants to transition into renewable resource production facilities or biorefineries, which aim to valorize the organic carbon and nutrients found in …