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.
Results
Showing 1 to 20 of 125 for “"Diffusion processes"”.
-
Diffusion Processes with Reflection
… eine Partikelapproximation für die Wasserstein Diffusion bewiesen. Bei der Wasserstein Diffusion handelt es sich um einen reversiblen Markov Prozess mit Werten in der Menge von Wahrscheinlichkeitsmaßen auf dem Einheitsintervall. Das Ziel ist es, ein Partikelsystem zu definieren, so dass der …
-
Dynamics of Nonlinear Diffusion Processes
… purpose of this thesis is to analyze nonlinear diffusion processes. In particular, some of the results arrived at by Newman and Sagan in their 1981 paper "Galactic Civilizations: Population Dynamics and Interstellar Diffusion," will be reproduced by different means. First, a thorough analysis of …
-
Integrating complexity in innovation diffusion processes
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Geometry of sub-Riemannian diffusion processes
… analysis some of the aspects of sub-Riemannian diffusion processes on manifolds. We first focus on studying the small-time asymptotics of sub-Riemannian diffusion bridges. After giving an overview of recent work by Bailleul, Mesnager and Norris on small-time fluctuations for the bridge of a …
-
Non-Linear diffusion processes and applications
Diffusion models are useful tools for quantifying the dynamics of continuously evolving processes. Using diffusion models it is possible to formulate compact descriptions for the dynamics of real-world processes in terms of stochastic differential equations. Despite the exibility of these models, …
-
A Study of Concentration Dependent Diffusion Processes
Made available in DSpace on 2014-12-05T19:36:21Z (GMT). No. of bitstreams: 1 0016402.pdf: 2901249 bytes, checksum: f8b2485bac87ca951f0edff411bcc8e7 (MD5) Previous issue date: 1956
-
Machine learning methods based on diffusion processes
… the mathematical formalism and physical idea of diffusion processes. First, the idea of using heat diffusion on a hypersphere to measure similarity has been previously proposed and tested by computer scientists, demonstrating promising results based on a heuristic heat kernel obtained from the …
-
Structured Diffusion Processes in Deep Generative Models
Diffusion generative models have emerged as a powerful, versatile, and elegant generative modeling framework for diverse data modalities. However, the high computational cost of inference relative to other frameworks remains a chief limitation of such models. At the same time, the design space of a …
-
Applications of diffusion processes: machine learning, optimization, and sampling
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
-
Utilization Of Total Mass As A Control In Diffusion Processes
… for such a system is the control of reaction diffusion systems such as production of a chemical material in a reaction chamber via the introduction of reactants at the boundary of chamber. In Chapter 1, we study the diffusion problem ut = uxx, 0 < x < 1, t > 0; u(x, 0) = 0, and u(0, t) = u(1, …
-
Strong convergence to diffusion processes with application to queueing theory
… uniform pathwise convergence of birth and death processes and random walks to Brownian motion with drift and sticky Brownian motion. We thus provide constructive definitions of such diffusions. In the first case we give a queueing application and in the latter case we provide the transition …
-
Simulation of implantation and diffusion processes for electro-thermal microcantilevers
… and determine the corresponding implantation and diffusion parameters for the doping steps. We used a two-dimensional model to simulate the process steps for doping different regions of the electro-thermal probe using DIOS, a multidimensional process simulator in the TCAD suite. Each cantilever …
-
Distributionally robust L1 adaptive control for nonlinear ITˆO diffusion processes
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
-
Surface Circulation and Horizontal Diffusion Processes of the Lower Chesapeake Bay
… to study the surface circulation and horizontal diffusion processes of the lower Chesapeake Bay. The study area encompasses some 160 km<sup>2</sup> and includes the area north of Thimble Shoal Channel, southwest of Chesapeake Channel and west of the Chesapeake Bay Bridge and Tunnel. Eleven trials …
-
Vibrational Spectroscopic Studies of Degradation and Diffusion Processes in Poly(ethylene terephthalate)
… and elevated temperatures has been studied. The diffusion of water, at ambient temperatures, into PET films, ofthe order of 10 um thick, has been followed using Founer transform infrared attenuated total reflectance, FT-IR ATR, spectroscopy. Films of differing degrees ofcrystallinity were …
-
Diffusion Processes, Metric Graphs and Boundary Value Problems for Reaction Diffusion Systems
… model of a class of first order reaction-diffusion system, known as TAP systems, in which gas reactants and products diffuse in a domain and reaction takes place at a single relatively small catalytic site in the domain. The central problem is to determine the probability of reaction, or, …
-
Characterization of Diffusion Processes in Thin Polymer Films via Optical Waveguide Techniques
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1993.
Page 1 of 7