Electric-Drive Vehicle Fleets need proper charging infrastructure available in the area of operation. The number of potential locations can be quite large with differing costs for preparation, installations, operation and maintenance. We consider a planning approach based on vehicle movement scenarios. Given a large set of vehicle movements and parking activities, we search for a cost minimal s...

An innovative and sustainable approach to clinical e-learning is described The approach is based on a national federation to provide funding, clinical and educational expertise, IT solutions and program oversight; to develop, curate and champion a resource with multiple courses for healthcare professionals. The approach has resulted in formal recognition by nearly all Australian healthcare orga...

anytime, anywhere, and the need to rapidly introduce new revenue generating services is driving service providers to carefully scrutinize future network capital expenditures (CapEx). At the same time, network infrastructure energy costs are spiraling higher and driving up operational expenditures (OpEx). Faced with increasing CapEx and OpEx, service providers are looking for telecom and network...

Recent facility location allocation problems are engaged with social, environmental and many other aspects, besides cost objectives.Obtaining a sustainable solution for such problems requires development of new mathematical modeling and optimization algorithms. In this paper, an uncapacitated dynamic facility location-network design problem with random budget constraints is considered. Social i...

Due to the importance of energy consumption in a steam network of oil refinery as a significant unit, present study is concerned with the optimization of an oil refinery steam network. Here, the attempt was made to use concepts such as first and second thermodynamic laws, thermo-economic, environmental and economic discussions to investigate three different scenarios about Tehran refinery steam...

Overlay networks have become an enabler for innovation in today’s Internet through cost-efficient and flexible deployment of novel services. The self-organization and scalability properties that peer-to-peer-based overlay networks provide have created real-world large-scale systems like Kad, or Amazon’s Dynamo. Building upon the OMNeT++ simulation environment, the OverSim framework provides wid...

in this paper, we develop a freight transportation model for railway network considering hazmat transportation issue. in the transportation system considered, different customers can request for carrying hazmat and non- hazmat boxes. it is assumed that the sequence of the trains in the network is known. the objective is assigning the non-hazmat boxes and hazmat boxes to wagons of the trains so ...

In this paper, a new method for developing a lower bound on exact completion time distribution function of stochastic PERT networks is provided that is based on simplifying the structure of this type of network. The designed mechanism simplifies network structure by arc duplication so that network distribution function can be calculated only with convolution and multiplication. The selection of...