An efficient numerical method for the design and synthesis of compensator for a relay type control system is developed and discussed. Previous works based on the interactive graphic method are reviewed and it is shown that the combination of the trequency and time domain numerical techniques provide a powerful tool in design of a wide class of relay control systems. An example is presented to d...

introduction: the purpose of this study is to evaluate the effects of topical application of honey on the burn of full-thickness skin in rats. materials and methods: 40 adult female rats were divided into two groups and each group was subdivided into control and two experimental subgroups. the experiments were carried out under nitrofurazone anaesthesia. a third degree burn was carried out in t...

This paper studies coordination and competition issues in a closed-loop supply chain. The supply chain consists of two competing manufacturers who collect the used-product for remanufacturing through a common retailer. We obtain the optimal wholesale prices, and the optimal fraction of collection for the two cases: case1 (uncoordinated system) and case2 (channel-coordinated system). Furthermore...

We consider the problem of efficient statistical inference for comparing two regression curves estimated from two samples of dependent measurements. Based on a representation of the best pair of linear unbiased estimators in continuous time models as a stochastic integral, an efficient pair of linear unbiased estimators with corresponding optimal designs for finite sample size is constructed. T...

We consider an implant shape design problem arising in the context of facial surgery. The aim is to find the shape of an implant that deforms the soft tissue of the skin in a desired way. Assuming sufficient regularity, we introduce a reformulation as an optimal control problem where the control acts as a boundary force. The solution of that problem can be used to recover the implant shape from...

Ahatract-We investigate the existence and uniqueness of robust time-optimal control solutions of flexible structures for rest-torest motion. We show that several robust time-optimal control designs for flexible systems are equivalent to traditional nonrobust time-optimal controls for difirent systems. This equivalence implies that the robust time-optimal controllers must then have all the prope...

In this paper, we analyze a call center with impatient customers. We study how informing customers about their anticipated delays affects performance. Customers react by balking upon hearing the delay announcement, and may subsequently renege, particularly if the realized waiting time exceeds the delay that has originally been announced to them. The balking and reneging from such a system are a...