university course timetabling is a complex optimizationproblem. there are many components like departments, faculties, rooms,and students making the problem huge and difficult to solve. eachcomponent enforces a set of normally conflicting constraints on thesolution space. the problem will be solved if courses are scheduled indifferent rooms and within some specific time slots such that a set of...

The use of renewable energies is increasing around the world in order to deal with environmental and economic problems related conventional generation. In this sense, photovoltaic generation one most promising technologies because high availability sunlight, easiness maintenance, reduction costs installation production. However, panels are elements that must be located outside receive sun radia...

This paper, deals with a meta-heuristic method, the Particle Swarm Optimization (PSO), for operational parameters identification of synchronous machine. The considered method consists minimizing quadratic criterion that represents difference between simulated model at standstill frequency response output and those computed from to be identified. obtained results by simulation show based on part...

Radio frequency~ identification (RFIDW is a technology where a reader device can "sense" the presence of a close-by object by reading a tag device attached to the object. To improve coverage, multiple RFID readers can be deployed in the given region. In this paper, we consider the problem of slotted scheduled access of RFID tags in a multiple reader environment. In particular, we develop centra...

In hybrid flow shop scheduling problem (HFS) with unrelated parallel machines, a set of n jobs are processed on k machines. A mixed integer linear programming (MILP) model for the HFS scheduling problems with unrelated parallel machines has been proposed to minimize the maximum completion time (makespan). Since the problem is shown to be NP-complete, it is necessary to use heuristic methods to ...

The use of radio frequency identification (RFID) allows utility companies to read meters from a distance. Thus a meter reader need not visit every customer on his route, but only get within a certain radius of each customer. In finding an optimal route – one that minimizes the distance the meter reader travels while servicing each customer on his route – this notion of only needing to be close ...

In a competitive business environment, RFID technology can help a business to optimize its supply chain. However, it may also enable an adversary using covert channels to surreptitiously learn sensitive information about the supply chain of a target business. We argue that the tracking of tags and the compromising of readers can create covert channels in the supply chain and cause detrimental m...