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In a high-mixed production environment, printed circuit board manufacturers face the challenge of frequent setups which involve rearranging the feeders on the machines. To reduce the setup cost, different boards can be assembled with a common feeder arrangement. This paper focuses on the optimization problems arising in this situation. Decisions are to be made on how different component feeders are...
This article develops an algorithm for the optimization design of Exponentially Weighted Moving Average (EWMA) control charts. The design algorithm adjusts the sample size, sampling interval and control limits of the chart in an optimal manner in order to minimize the mean number of defective units (denoted as MD) produced per out-of-control case. The optimal chart is therefore named as the MD-EWMA...
Combined heat and power system (CHP) with renewable energy generation, which operates with high efficiency and low costs, is an important form of microgrid. This paper deals with the problem of economic operation of cogeneration system including wind energy, PV, heat recovery boiler and battery. On the basis of predicting the next 24-hours' wind energy and PV power, power and heat demand, a nonlinear...
Zheng and Tse have demonstrated that there exists an optimal trade-off between diversity gain and multiplexing gain. To realise the predicted optimal trade-off, we propose a new multiple-input multiple-output transmission scheme for a concatenated coding and space-time (ST) modulation system aimed at applications that require flexible trade-off between performance and data rate. The proposed scheme...
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