— This papers reports a test-bed implementation of an application-aware optical network where IT applications may request a given resource (i.e. remote storage space, remote computation, media stream, etc.) and the communication facilities required to connect to it with proper grade of service, fully relying on the network infrastructure.

We consider a generalized version of the rooted connected facility location problem which occurs in planning of telecommunication networks with both survivability and hop-length constraints. Given a set of client nodes, a set of potential facility nodes including one predetermined root facility, a set of optional Steiner nodes, and the set of the potential connections among these nodes, that ta...

BACKGROUND The shortage of physicians is reported in the small cities in Japan, but the mal-distribution of physicians and emergency medical facilities has not been fully investigated. METHODS Survey of Medical Institutions, 2005, Survey of Physicians, Dentists and Pharmacists, 2004, and 2005 Population Census of Japan were used. The relationships between city population and the numbers of me...

In many telecommunication network architectures a given set of client nodes must be served by different kinds of facility, which provide different services and have different capabilities. Such facilities must be located and dimensioned in the design phase. We tackle a particular location problem in which two sets of facilities, mid level and high level, have to be located. Different devices ca...

Principles necessary to develop a method and computational facilities for the parallel hierarchical transformation based on high-performance GPUs are discussed in the paper. Mathematic models of the parallel hierarchical (PH) network training for the transformation and a PH network training method for recognition of dynamic images are developed.

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One of the strategic decisions that can be made in supply chain is designing its network which has high impact on costs, and satisfaction level of customers. This paper focuses on designing a distribution network including determining the number and location of facilities, how to allocate the customers in network, and also determining the extent of carrying different products from different ori...

After abandoned from other than the few African countries, the Ebola outbreak is shifted to pandemic and has been impact on global economy (1). Global efforts have been jointly urged to combat with this emergency crisis, but most of the developing countries are far behind the capacity to battle the outbreak with their weak health systems. Unfortunately, governances are still not grave for this ...

    Hub covering location problem, Network design,   Single machine scheduling, Genetic algorithm,   Shuffled frog leaping algorithm   Hub location problems (HLP) are synthetic optimization problems that appears in telecommunication and transportation networks where nodes send and receive commodities (i.e., data transmissions, passengers transportation, express packages, postal deliveries, etc....