Browsing by Subject "Iterative methods"
Now showing items 21-40 of 54
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Article
Distributed resource coordination in networked systems described by digraphs
(2015)We consider a multicomponent system in which each component can receive/transmit information from/to components in its immediate neighborhood. Communication links between components are not required to be bidirectional, ...
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Conference Object
Distributed stochastic power control for time-varying long-term and short-term fading wireless networks
(2007)In this paper, new time-varying wireless channel models that capture both the space and time variations of longterm and short-term fading wireless networks are developed. The proposed models are based on stochastic ...
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Conference Object
Distributed stopping for average consensus in directed graphs via a randomized event-triggered strategy
(IEEE Computer Society, 2014)We consider how an iterative strategy for asymptotic average consensus in a directed graph (digraph) can be adapted so that the nodes can determine, in a distributed manner, a stopping criterion that allows them to terminate ...
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Article
Distributed stopping for average consensus in undirected graphs via event-triggered strategies
(2016)We develop and analyze two distributed event-triggered linear iterative algorithms that enable the components of a distributed system, each with some initial value, to reach approximate average consensus on their initial ...
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Conference Object
Distributed weight balancing under integer constraints in the presence of packet drops
(Institute of Electrical and Electronics Engineers Inc., 2018)A digraph with positive integer weights on its (directed) edges is weight-balanced if, for each node, the sum of the weights of the incoming edges equals the sum of the weights of the outgoing edges. We develop a distributed ...
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Article
Dynamic programming subject to total variation distance ambiguity
(2015)The aim of this paper is to address optimality of stochastic control strategies via dynamic programming subject to total variation distance ambiguity on the conditional distribution of the controlled process. We formulate ...
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Conference Object
Effects of periodic gravity modulation in microgravity convection systems
(Publ by ASME, 1993)Natural convection in an enclosure that is subjected to periodic excitations is investigated using a classical mixed Galerkin finite element method. The modulation is incorporated in the momentum equations, through a ...
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Conference Object
Encoder-decoder design for perfect reconstruction: A robust control perspective
(2005)In this paper we consider the transmission of discrete data via a communication channel that is subject to (additive) noise with a known upper bound on its magnitude but otherwise completely unknown. We are interested in ...
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Article
Extending FABRIK with model constraints
(2016)Forward and Backward Reaching Inverse Kinematics (FABRIK) is a recent iterative inverse kinematics solver that became very popular because of its simplicity, convergence speed and control performance, especially in models ...
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Conference Object
Finite-time approximate consensus and its application to distributed frequency regulation in islanded AC microgrids
(IEEE Computer Society, 2015)In this paper, we propose an iterative algorithm that allows a set of interconnected nodes to reach approximate consensus in a finite number of steps, i.e., Allows the nodes to reach agreement to within a pre-specified ...
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Article
Graphical inference for multiple intrusion detection
(2008)In this paper, we consider vulnerabilities of networked systems and develop a multiple intrusion detection system (MIDS) which operates by running belief propagation on an appropriately constructed weighted bipartite graph. ...
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Article
High performance solution of partial differential equations discretized using a chebyshev spectral collocation method
(1996)When a Chebyshev spectral collocation method is applied to a flow problem in a rectangularly decomposable domain it leads to the solution of a structured linear system. Since the linear system is solved at each step of a ...
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Conference Object
Infinite horizon average cost dynamic programming subject to ambiguity on conditional distribution
(Institute of Electrical and Electronics Engineers Inc., 2015)This paper addresses the optimality of stochastic control strategies based on the infinite horizon average cost criterion, subject to total variation distance ambiguity on the conditional distribution of the controlled ...
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Conference Object
Integer weight balancing in directed graphs in the presence of communication delays
(Institute of Electrical and Electronics Engineers Inc., 2015)A digraph with positive weights on its edges is weight-balanced if, for each node, the sum of the weights of the incoming edges equals the sum of the weights of the outgoing edges. Weight-balanced digraphs play an important ...
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Conference Object
Low-complexity max-product algorithms for problems of multiple fault diagnosis
(2008)In this paper, we propose low-complexity max-product algorithms for the problem of multiple fault diagnosis (MFD). The MFD problem is described by a bipartite diagnosis graph (BDG) which consists of a set of components, a ...
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Article
The method of fundamental solutions for three-dimensional inverse geometric elasticity problems
(2016)We investigate the numerical reconstruction of smooth star-shaped voids (rigid inclusions and cavities) which are compactly contained in a three-dimensional isotropic linear elastic medium from a single set of Cauchy data ...
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Conference Object
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Article
Numerical simulations of cessation flows of a Bingham plastic with the augmented Lagrangian method
(2010)The augmented Lagrangian/Uzawa method has been used to study benchmark one-dimensional cessation flow problems of a Bingham fluid, such as the plane Couette flow, and the plane, round, and annular Poiseuille flows. The ...
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Conference Object
Performance of GMRES for the MFS
(2009)In this work we present some preliminary numerical results regarding the performance of the Generalized Minimal Residual (GMRES) method when it is applied to the solution of the linear systems arising from the discretization ...