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Britische Panelstudien zum Verkehrsverhalten
(1993)This report provides a concise review of existing British panel studies in the area of travel behaviour. The possible results and conclusions from such studies is illustrated with some selected examples from recent panel studies. The report provides a comprehensive bibliography of British panel studies. In addition, a selection of foreign studies and theoretical writings on panels is provided.Report -
The role of computer-based role-playing in travel behaviour analysis
(1990)The increasing traffic problems have forced policy maker around the world to look at new policy options: traffic restraint, electronic road pricing, information technologies and advanced traffic management systems. This paper argues that the planning tools available to the policy makers to evaluate this options ahve not kept up with these changes. The central shortcoming is the lack of understanding of household and individual scheduling ...Report -
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Analysis of Continuous-time Robust Control Models using Finite, Sampled, Experimental Data
(1995)Center for Control Engineering & Computation. Technical ReportThe application of robust control theory requires applicable models containing unknown, bounded, perturbations and unknown, bounded input signals. Model validation is a quantitative means of assessing the applicability of a given model with respect to experimental data. This paper develops a theoretical framework, and a computational solution, for the model validation problem in the case where the model, including unknown perturbations ...Report -
Restarted GMRES preconditioned by deflation
(1994)SAM Research ReportThis paper presents a new preconditioning technique for solving linear systems. It is based on an invariant subspace approximation for the restarted GMRES algorithm. It uses the flexible GMRES scheme by designing a new preconditioning after each restart. Numerical examples show that this approach may converge almost as fast as full-GMRES at a, possibly, much lower cost.Report