– a network made ‘’for and with the concerned community”, able to come up to the expectations and to fit the new plans. A total mastery in transparency (for its management, the control of development, . . . ) is the garanty for a network serving the community it was made for. – an optic structure in ‘’optical fibre” and DWDM (Dense Wavelength Division Multiplexing), ATM and gigabit protocols, s...

In this paper, we investigate high-capacity fiber-optic networks for real-time telemetry applications. The network topologies and related network components are analyzed for telemetry fiber-optic Local Area Network (LAN) and Metropolitan Area Network (MAN) as well as MAN internetworking with LANs. Two types of multiplexing techniques, namely, Wavelength Division Multiplexing and Time Division M...

AbstmctHigh-performance wide-area networks are required to interconnect clusters of computers connected by local area and metropolitan area networks. Optical fiber technology provides long distance channels in the multigigabit per second range. The challenge is to provide switching nodes that handle these data rates with minimum delay, and at a reasonable cost. In this paper, we describe a pack...

A secure communication network with quantum key distribution in a metropolitan area is reported. Six different QKD systems are integrated into a mesh-type network. GHz-clocked QKD links enable us to demonstrate the world-first secure TV conferencing over a distance of 45km. The network includes a commercial QKD product for long-term stable operation, and application interface to secure mobile p...

We present our experiences and investigations with an experimental metropolitan multi-radio mesh network that covers an area of approximately 60 Km in the city of Heraklion, Crete. The network consists of 14 nodes, among which six are core nodes with up to four 802.11a wireless interfaces each, and an additional wireless interface for management and monitoring. The distance between core mesh no...

Grid Computing is a wide-area computing infrastructure viewed by many as a promising next generation platform for solving large-scale problems. Most of the current research projects concentrate on constructing middleware to provide pervasive, dependable, and consistent access to geographically distributed computational resources connected by a wide-area network. As an alternative, we are studyi...

This paper provides an evidence-based approach to understanding the relationship infrastructure of spatially defined innovation ecosystems in three metropolitan areas. With the Triple Helix framework, the ecosystem perspective, and shared vision for transformation initiatives, we explore relationships as structure in the metropolitan areas of Austin, TX; Minneapolis, MN; and Paris, France. Netw...

In order to provide comfortable and safety life for every people in the world, information technologies will be useful in a rural area as well as in a metropolitan area. This paper proposes a new concept of Life Support Network (LSN) for elderly people living in a rural area. The network is a type of Intranet, which incorporates a safety confirmation system, a remote healthcare system, an emerg...