We study the throughput of a stochastic network with input policing. Such policing can be used to improve the fairness of packet switches and of communication networks as well as of service systems. Our approach consists in showing that the throughput of the network approaches that of a corresponding fluid network. The type of queueing network we study consists of multiple stations, carries mul...

in this paper, optimization and control of a tubular reactor for thermal bulk post-polymerization of styrene have been investigated. by using the reactor mathematical model, static and dynamic simulations are carried out. based on an objective function including polymer conversion and polydispersity, reactor optimal temperature profile has been obtained. in the absence of model mismatch, desire...

in this paper, power system restoration in the presence of svc and tcsc in partial outage conditions is considered and a new method for maximum load restoration using different control variables is presented. control variables are tap of transformers, generation rescheduling and operating points of facts devices. objective function is restored load (to be maximized) and constraints are voltage ...

The transmit power and the carrier sense threshold are two major MAC/PHY parameters in CSMA/CA wireless networks. The problem of transmit power control has been extensively studied in the context of graph-theoretic topology control and maintenance. What has not been studied in depth is the effect of signal to interference plus noise ratio (SINR) on the topology and the network capacity sustaine...

Received May 9, 1991; revised manuscript received February 14, 1992; accepted February 25, 1992 The mismatch in the number of degrees of freedom supported by volume holograms and the boundary fields that control them limits the dynamic range of recorded holograms. For holograms controlled by using fractal sampling grids, the maximum dynamic range falls inversely with the minimum number of expos...

introduction: the main purpose of this study was to compare transient ischemic dilation (tid) ratios in spect-low dose ct and spect myocardial perfusion imaging (mpi) by application of different quantitative programs and quantify the possible shift in the upper normal limits of tid ratio in the spect-ct mpi. methods: 149 patients with low pre-test probability for coronary artery disease (cad),...

We develop analytic asymptotic methods to characterize time series properties of nonlinear dynamic stochastic models. We focus on a stochastic growth model which is representative of the models underlying much of modern macroeconomics. Taking limits as the stochastic shocks become small, we derive a functional central limit theorem, a large deviation principle, and a moderate deviation principl...

Aim of this paper is to set invariance in stochastic dynamical control systems. Given a set within which the state of the dynamical system should evolve, we study conditions for finding a control strategy that maximizes the probability for the state to be in the given set within a fixed a–priori finite time horizon. We formulate an optimal control problem and we solve the problem at hand by usi...