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Showing 1 - 10 of 10 matches in All Departments
A comprehensive development of interpolating control, this monograph demonstrates the reduced computational complexity of a ground-breaking technique compared with the established model predictive control. The text deals with the regulation problem for linear, time-invariant, discrete-time uncertain dynamical systems having polyhedral state and control constraints, with and without disturbances, and under state or output feedback. For output feedback a non-minimal state-space representation is used with old inputs and outputs as state variables. "Constrained Control of Uncertain, Time-Varying, Discrete-time Systems" details interpolating control in both its implicit and explicit forms. In the former at most two linear-programming or one quadratic-programming problem are solved on-line at each sampling instant to yield the value of the control variable. In the latter the control law is shown to be piecewise affine in the state, and so the state space is partitioned into polyhedral cells so that at each sampling interval the cell to which the measured state belongs must be determined. Interpolation is performed between vertex control, and a user-chosen control law in its maximal admissible set surrounding the origin. Novel proofs of recursive feasibility and asymptotic stability of the vertex control law, and of the interpolating control law are given. Algorithms for implicit and explicit interpolating control are presented in such a way that the reader may easily realize them. Each chapter includes illustrative examples, and comparisons with model predictive control in which the disparity in computational complexity is shown to be particularly in favour of interpolating control for high-order systems, and systems with uncertainty. Furthermore, the performance of the two methods proves similar except in those cases when a solution cannot be found with model predictive control at all. The book concludes with two high dimensional examples and a benchmark robust model predictive control problem: the non-isothermal continuously-stirred-tank reactor. For academic control researchers and students or for control engineers interested in implementing constrained control systems" Constrained Control of Uncertain, Time-Varying, Discrete-time Systems" will provide an attractive low-complexity control alternative for cases in which model predictive control is currently attempted.
Routing and Quality-of-Service in Broadband LEO Satellite Networks describes mechanisms for supporting Quality-of-Service (QoS) strategies that consider properties of low earth orbit satellite networks and their effects on link handover. A graph model representing the dynamic topology of a satellite constellation is introduced based on a new parameter, lifetime. Novel routing and resource reservation algorithms as well as connection admission control strategies are proposed to minimize the handover blocking probability while maintaining QoS requirements. The author also discusses the roles of satellites in an all-IP mobile network architecture and the problems of mobility, QoS provisioning, and routing. This work will be of particular interest to researchers and professionals working on mobility networking in next generation networks.
Routing and Quality-of-Service in Broadband LEO Satellite Networks describes mechanisms for supporting Quality-of-Service (QoS) strategies that consider properties of low earth orbit satellite networks and their effects on link handover. A graph model representing the dynamic topology of a satellite constellation is introduced based on a new parameter, lifetime. Novel routing and resource reservation algorithms as well as connection admission control strategies are proposed to minimize the handover blocking probability while maintaining QoS requirements. The author also discusses the roles of satellites in an all-IP mobile network architecture and the problems of mobility, QoS provisioning, and routing. This work will be of particular interest to researchers and professionals working on mobility networking in next generation networks.
Fifty years ago, health outcomes in the countries of Eastern Europe and Central Asia were not far behind those in Western Europe and well ahead of most other regions of the world. But progress since then has been slow. While life expectancy in the ECA region today is close to the global average, the gap with its western neighbours has doubled, and other middle-income regions have all surpassed ECA. Some countries in the region are doing better, but full convergence with the world's most advanced health systems is still a long way off. At the same time, survey evidence suggests that the health sector is the top priority for additional investment among populations across the region. The experience of high-income countries also suggests that popular demand for strong and accessible health systems will only grow over time. Yet these aspirations must be reconciled with current fiscal realities. In brief, health sector issues are a challenge here to stay for policy-makers across the ECA region. This report draws on new evidence to explore the development challenge facing health sectors in ECA, and highlights three key agendas to help policy-makers seeking to achieve more rapid convergence with the world's best performing health systems. The first is the health agenda, where the task is to strengthen public health and primary care interventions to help launch the 'cardiovascular revolution' that has taken place in the West in recent decades. The second is the financing agenda, in which growing demand for medical care must be satisfied without imposing undue burden on households or government budgets. The third agenda relates to broader institutional arrangements. Here there are some key reform ingredients common to most advanced health systems that are still missing in many ECA countries. A common theme in each of these three agendas is the emphasis on improving outcomes, or 'Getting Better'.
Fast, fresh, and more delicious than take-out Stir-frying is quick, healthy, and incredibly easy to do at home. "The Everything Stir-Fry Cookbook, 2nd Edition" is full of recipes that are guaranteed to get dinner on the table in minutes This sizzling sourcebook of 300 recipes features delicious meals that don't require a lot of ingredients--or time, including:
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