In this paper, the problem of batch scheduling in a flexible flow shop environment is studied. It is assumed that machines in some stages are able to process a number of jobs simultaneously. The applications of this problem can be found in various industries including spring and wire manufacturing and in auto industry. A mixed integer programming formulation of the problem is presented and it i...

In this paper, the problem of batch scheduling in a flexible flow shop environment is studied. It is assumed that machines in some stages are able to process a number of jobs simultaneously. The applications of this problem can be found in various industries including spring and wire manufacturing and in auto industry. A mixed integer programming formulation of the problem is presented and it i...

In this video paper we present the Talking Assistant and the STAIRS project, and how the two interact. The Talking Assistant is a device for interacting in ubiquitous computing environments. It features sensors, wireless communications and simple local speech recognition. The STAIRS project concerns browsing of structured hypertext documents in audio. One key feature of STAIRS is, that beside s...

We study a dynamic repair shop scheduling problem in the context of military aircraft fleet management. A number of flights, each with a requirement for a specific number and type of aircraft, are already scheduled over a long horizon. The overall scheduling horizon is considered to be composed of multiple time periods. The goal is to maintain a full complement of aircraft. We need to assign ai...

In this paper, we consider a repair shop that fixes failed components from different k-out-of-n:G systems. We assume that each system consists of the same type of component; to increase availability, a certain number of critical components are stocked as spare parts. We permit a shared inventory serving all systems and/or reserved inventories for each system; we call this a hybrid model. Additi...

The aim of this study was the occupational exposure assessment to lead and manganese of workers in an armament repair shop of a military organization. The air of the working environment was assessed in the environmental monitoring while the internal dose biological indicators for lead and manganese, in blood and urine, were used in biological monitoring. Metals concentration in filters and biol...

One example of transportation problems is the Shvan Art Shop, which engaged in exporting 20 cm rattan bags. In distributing bags, Shop does not directly send goods to their destination, but still through intermediaries. To overcome this problem, a transshipment model can be used get distribution line so that outgoing costs are minimal. The purpose study compare before applying with after using ...

We present here a discipline for job shop reschedub ing based on partial order backtracking. We show that partial order backtracking offers the rescheduler a framework for schedule repair, based upon a set of nocdoods, which impose a systematic paxtial order on the set of activities to be repaired but allows non systematic techniques to be used within that framework. We present rescheduling as ...

We present here a discipline for job shop rescheduling based on partial order backtracking. We show that partial order backtracking ooers the rescheduler a framework for schedule repair, based upon a set of nogoods, which impose a systematic partial order on the set of activities to be repaired but allows non systematic techniques to be used within that framework. We present rescheduling as par...