Index Catalog // ScholarsArchive@OSU

Multiphase Flow and Transport in Porous Media with Phase Transition at Multiple Scales: Modeling, Numerical Analysis, and Simulation

Creator:: Shin, Choah
Abstract:: In this dissertation we consider two application specific flow and transport models in porous media at multiple scales: 1) methane gas transport models for hydrate formation and dissociation in the subsurface under two-phase conditions, and 2) coupled flow and biomass-nutrient model for biofilm growth in complex geometries with biofilm, and...
Resource Type:: Dissertation
Full Text:: biomass- nutrient model for biofilm growth in complex geometries with biofilm, and its impact via

Three Topics on Coastal Hazards : Propagation, Transformation, and Impact

Creator:: Ko, Harrison T.
Abstract:: An understanding of natural coastal hazards is essential for improving resilience of coastal communities. Effective management of coastal hazards relies on prediction tools and mitigation structures that have been designed to handle the dynamic coastal system. This dissertation is a collection of manuscripts that cover a diverse range of fundamental...
Resource Type:: Dissertation
Full Text:: sample variances from a reference solution produced by a nonlinear forecast model by ex- ploiting

Incorporating Uncertainty in Truckload Relay Network Design

Creator:: Mokhtari, Zahra
Abstract:: In a relay network for full truckload (TL) transportation, facilities known as relay points (RPs) serve as exchange points where truck drivers can exchange trailers. This would help carriers to assign more regular tours to drivers when compared to the excessively long tours that exist in the traditional Point-to-Point (PtP)...
Resource Type:: Dissertation
Full Text:: mathematical model for the TLRND- MD problem. Solutions that perform well under any possible realization of

Domain-Independent Planning for Markov Decision Processes with Factored State and Action Spaces

Creator:: Raghavan, Aswin
Abstract:: Markov Decision Processes (MDPs) are the de-facto formalism for studying sequential decision making problems with uncertainty, ranging from classical problems such as inventory control and path planning, to more complex problems such as reservoir control under rainfall uncertainty and emergency response optimization for fire and medical emergencies. Most prior research...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 6.4 Learning an RDDL Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 7

Penumbra : A Spatiotemporal Shade-Irradiance Analysis Tool with External Model Integration for Landscape Assessment, Habitat Enhancement, and Water Quality Improvement

Creator:: Halama, Jonathan James
Abstract:: Several solar energy models exist, but all models must balance: computational runtime, light complexity, and model output volume. These models span the spectrum of simplistic global solar energy equation sets to complex light ray-tracing models. Spatiotemporally inaccurate representations of solar energy may cause compounding simulation effects and introduce unknown modeling...
Resource Type:: Dissertation
Full Text:: advance large watershed area spatiotemporal irradiance modeling. A model utilizing methods simpler than

Simulator-Defined MDP Planning with Applications in Natural Resource Management

Creator:: Alkaee Taleghan, Majid
Abstract:: This work is inspired by problems in natural resource management centered on the challenge of invasive species. Computing optimal management policies for maintaining ecosystem sustainable is challenging. Many ecosystem management problems can be formulated as MDP (Markov Decision Process) planning problems. In a simulator-defined MDP, the Markovian dynamics and rewards...
Resource Type:: Dissertation
Full Text:: Sample-Efficient MDP Planning . . . . . . . . . . . . . . . . 13 2.5 Improved Model-Based MDP Planning

From Functional Modeling to Optimization : Risk and Safety in the Design Process for Large-Scale Systems

Creator:: McIntire, Matthew G.
Abstract:: In order to more effectively design large, complex systems, risk must be accounted for throughout the design process. A systematic way to account for risk is by using system model simulation. During the conceptual design phase, functional models can be drawn to help the engineer design their system's functional architecture....
Resource Type:: Dissertation
Full Text:: system model simulation. During the conceptual design phase, functional models can be drawn to help the

Assimilation of Multi-Sensor Data into Numerical Hydrodynamic Models of Inland Water Bodies

Creator:: Javaheri, Amir
Abstract:: Numerical models are effective tools for simulating complex physical processes such as hydrodynamic and water quality processes in aquatic systems. The accuracy of the model is dependent on multiple model parameters and variables that need to be calibrated and regularly updated to reproduce changing aquatic conditions accurately. Multi-sensor water temperature...
Resource Type:: Dissertation
Full Text:: water quality processes in aquatic systems. The accuracy of the model is dependent on multiple model

Multi-objective Optimization of Reservoir Operation Under Uncertainty with Robust and Flexible Decision Variables

Creator:: Hosseini, Parnian
Abstract:: Optimization of reservoir operation is involves various competing objectives for a scarce resource (water). To find the optimal operation of reservoirs, it is essential to consider multiple objectives simultaneously. There are various sources of uncertainty associated with the reservoir operation problem that should be considered as well. The overarching goal...
Resource Type:: Dissertation
Full Text:: of decision variables. The proposed methodology is tested for two mathematical test problems and

Novel Experimental Designs and Mathematical Models to Study Fecal Indicator Bacteria Persistence in Surface Water

Creator:: Brooks, Lauren
Abstract:: High counts of fecal indicators, used to signal the potential presence of pathogens associated with untreated waste, result in the classification of water bodies throughout the United States as impaired. Nonpoint sources of unknown origin that contribute to fecal contamination make management of impaired waters challenging, as they are difficult...
Resource Type:: Dissertation
Full Text:: : Novel Experimental Designs and Mathematical Models to Study Fecal Indicator Bacteria Persistence in

ScholarsArchive@OSU

Multiphase Flow and Transport in Porous Media with Phase Transition at Multiple Scales: Modeling, Numerical Analysis, and Simulation

Three Topics on Coastal Hazards : Propagation, Transformation, and Impact

Incorporating Uncertainty in Truckload Relay Network Design

Domain-Independent Planning for Markov Decision Processes with Factored State and Action Spaces

Penumbra : A Spatiotemporal Shade-Irradiance Analysis Tool with External Model Integration for Landscape Assessment, Habitat Enhancement, and Water Quality Improvement

Simulator-Defined MDP Planning with Applications in Natural Resource Management

From Functional Modeling to Optimization : Risk and Safety in the Design Process for Large-Scale Systems

Assimilation of Multi-Sensor Data into Numerical Hydrodynamic Models of Inland Water Bodies

Multi-objective Optimization of Reservoir Operation Under Uncertainty with Robust and Flexible Decision Variables

Novel Experimental Designs and Mathematical Models to Study Fecal Indicator Bacteria Persistence in Surface Water

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