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 12 of 12 for “"random environment"”.
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Oscillation of quenched slowdown asymptotics of random walks in random environment in Z
<p>We consider a one dimensional random walk in a random environment (RWRE) with a positive speed lim<em>n</em>→∞ (<em>Xn/</em>) = υα > 0. Gantert and Zeitouni showed that if the environment has both positive and negative local drifts then the quenched slowdown probabilities <em>P</em> …
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Analysis of networks with dynamic topologies
… general model, a network of M/M/1 queues in a random environment, is introduced and then is simplified so that the links may be treated as isolated M/M/1 queues in a random environment. This treatment yields a formula for approximate mean network delay by combining matrix-geometric results …
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Dormancy in spatial population models in random environments
… spatial models for populations with dormancy in random environments. The models are formulated as continuous-time two-type branching random walks, where individuals switch between active and dormant states. We consider two scenarios: one where the switching rates are influenced by the random …
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On some classes of birth and death processes in continuum
… The contact process and Glauber-type dynamics in random environment are treated. Additionally, two-component systems are introduced: the ecological model and Glauber-Potts type model. For all of the above-mentioned processes, the existence of the associated dynamics is proven. The Vlasov-type …
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Homogenization of Random Media: Random Walks, Diffusions and Stochastic Interface Models
… scaling limits and heat kernel estimates, for random processes moving in random environments and for stochastic interface models. The first chapter will survey recent research and introduce three models of interest: the random conductance model, the Ginzburg-Landau ∇φ model, and the symmetric …
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Playing Tetris with deep reinforcement learning
Tetris is a hard game to learn due to its random environment, large state space, and need for a long-term strategy. The offline version of the game is shown to be NP-hard. The state-of-the-art approach, CBMPI, is a hybrid algorithm based on evolution algorithms and policy iteration. It uses …
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Distributed learning automata based data dissemination in swarm robotic systems
… with humans to accomplish tasks in a random environment. Swarms allow many tasks to be accomplished within a mission more quickly while generally being more cost effective. The robots in the swarm can also accomplish tasks that humans are not able to perform on their own. The random …
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Some application of Malliavin calculus to SPDE and convergence of densities
… the density of the branching particles in a random environment. The time-space joint continuity of the density process was left as an open problem. Li, Wang, Xiong and Zhou [Probab. Theory Related Fields 153 (2012), no. 3-4, 441--469] proved that this solution is joint H"{o}lder continuous …
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The Fokker-Planck and Related Equations in Theoretical Population Dynamics
… because population growth is basically a random event. There are a large number of chance factors influencing growth that might not be taken into account by deterministic models. The effect of other species (for example, in the chance meeting of a predator), population fluctuations due to …
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Stochastic singular control: existence, characterization and approximation of solutions in cost minimization problems and games
… a certain performance criterion by acting in a random environment which evolves in continuous time, and in which the effect of the agents' action on both the environment and on the performance is (linearly) proportional to the size of the action. Applications include investment and portfolio …
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Estudio e implementación de algoritmos de fusión sensorial para sensores pulsantes y clásicos con protocolo AER de comunicación y aplicación en sistemas robóticos neuroinspirados
… it is simulated using the Matlab Simulink environment for FPGA and Brian simulator for VLSI chips. The hardware results of the algorithms translated are presented. The open-loop spike-based VITE (on both platforms) and closed-loop (FPGA) applied and connected to a robotic platform using the …