Now showing items 1-10 of 18
Some Problems in Stochastic Control Theory Related to Inventory Management and Coarsening.
(2014)
In this dissertation, we study two stochastic control problems arising from inventory management and coarsening.
First, we study a stochastic production/inventory system with a finite production capacity and random demand. ...
Nonholonomic Virtual Constraints and Gait Optimization for Robust Robot Walking Control.
(2016)
Bipedal locomotion is well suited for mobile robotics because it promises to allow robots to traverse difficult terrain and work effectively in man-made environments. Despite this inherent advantage, however, no existing ...
Discrete Ordinates Methods for Transport Problems with Curved Spatial Grids.
(2015)
The method of characteristics (MOC) has been favored for many recent whole core transport codes; some current research codes are: the nTRACER code from Seoul National University, the MPACT code from the University of ...
Numerical Studies of Wave Turbulence in Finite Domains
(2023)
Nonlinear wave systems are ubiquitous in nature, and when many incoherent dispersive waves interact, there is the potential for wave turbulence (WT). Just as in flow turbulence, systems in WT exhibit inter-scale energy ...
All-Electron Ground-State and Time-Dependent Density Functional Theory: Fast Algorithms and Better Approximations
(2019)
Density functional theory (DFT), in its ground-state as well as time-dependent variant, have enjoyed incredible success in predicting a range of physical, chemical and materials properties. Although a formally exact theory, ...
Efficient Output-Based Adaptation Mechanics for High-Order Computational Fluid Dynamics Methods
(2018)
As numerical simulations are applied to more complex and large-scale problems, solution verification becomes increasingly important in ensuring accuracy of the computed results. In addition, although improvements in ...
Large-Scale Simulations of Complex Turbulent Flows: Modulation of Turbulent Boundary Layer Separation and Optimization of Discontinuous Galerkin Methods for Next-Generation HPC Platforms
(2020)
The separation of spatially evolving turbulent boundary layer flow near regions of adverse pressure gradients has been the subject of numerous studies in the context of flow control. Although many studies have demonstrated ...
Computational Methods for Understanding Dynamics in Mass Transport and Tissue Development
(2020)
Elucidating the process by which a biological system evolves and properly identifying hidden states and influential underlying factors are important for studying biological functions and origins of diseases. However, due ...
Reduced-Order Modeling of Turbulent Reacting Flows Using Inertial Manifold Theory
(2021)
Turbulent flows found in aerodynamics, propulsion, and other energy conversion sys- tems pose an inherent computational challenge for extensive predictive simulations. Over the last few decades, a statistical approach for ...
Multidisciplinary Study of Soft Shape Morphing Systems
(2021)
Nature abounds with examples of shape morphing systems where an entity either gradually grows into a complex 3-D shape pattern or rapidly morphs into a new configuration. Inspired by the shape shifting capabilities of ...