Network Topology Effecton QoS Delivering in Survivable DWDM Optical Networks, Journal of Telecommunications and Information Technology, 2009, nr 1

The quality of service (QoS) is an important and considerable issue in designing survivable dense wavelength division multiplexing (DWDM) backbones for IP networks. This paper investigates the effect of network topology on QoS delivering in survivable DWDM optical transport networks using bandwidth/load ratio and design flexibility metrics. The dedicated path protection architecture is employed to establish diverse working and spare lightpaths between each node pair in demand matrix for covering a single link failure model. The simulation results, obtained for the Pan-European and ARPA2 test bench networks, demonstrate that the network topology has a great influence on QoS delivering by network at optical layer for different applications. The Pan-European network, a more connected network, displays better performance than ARPA2 network for both bandwidth/load ratio and design flexibility metrics

Cryptanalysis of the Fast Lightweight Mutual Authentication Protocol

Security counts as a critical barrier to continuing growth of RFID industry due to lack of a proper high performance lightweight protocol-based solution. Amongst recent developments the Fast Lightweight Mutual Authentication Protocol (FLMAP) has been accepted for its superior speed and low complexity features. Here we examine the security strengths of FLMAP through systematic cryptanalysis tests. Outcome of our investigation show that in spite of its superior speed and power saving features FLMAP shows some serious design gaps and shortfalls against two specifically selected desynchronization and ID disclosure attacks. Finally, we propose solutions to fix the FLMAP designing and security flaws

Editorial: ultra wideband systems technologies and applications

Orthogonal technological competition allows the introduction of constructive new products that will allow a minimum interaction with those already in use. Radio technology has the potential for making use of unlimited untapped frequency resources up to terahertz level. The radio technology behind this Special Issue, so called impulse radio (IR) or ultra-wideband (UWB) is approaching its prime and will compete with narrowband RF technology in wireless communications. This will also enable us to make use of traditional pulse techniques to devise suitable solutions for new civil and commercial applications. It is expected that the UWB market for shortrange applications will grow to a quarter of a billion units in the next 5 years

Distributed Sensor Systems: Practice and Applications

This book focuses on the distinct but tightly inter-related areas of development for distributed sensing systems In this book, the authors discuss the technological developments lead by sensor technology, addressing viable new applications to inspire a technological evolution. Under the advanced and visionary approach of distributed intelligence, the authors focus on three distinct but tightly inter-related areas of developments for distributed sensing systems (DSS): firstly, the sensor technology embracing the conversion of the phenomena of interest into desirable form of signal such as electric, secondly, the interaction process between sensing points which requires immense intelligence loosely called networking, and finally, the adoption of useful maturing systems through potential applications for right impacts for a better life and a brighter economy. Furthermore, the book contains a number of case studies and typical applications illustrating the technical details, features and functions of the systems, as well as demonstrating their benefits and limitations. Key Features: Discusses the technological developments lead by sensor technology Addresses viable new applications Contains a number of case studies and typical applications illustrating the technical details, features and functions of the systems Demonstrates the benefits and limitations of distributed sensing Written by experts with vast experience in the field (both in academia and industry) This book will be an invaluable reference for postgraduates studying related courses (communication engineering, engineering management, computer systems, industrial process, automation, design, environmental, urban, surveillance), R&D engineers, system and application designers, researchers, industrial project managers and engineers, and technical and strategic managers planning new products

Editorial : green energy management and smart grid

International audienceNowadays, green energy management is a fundamental perspective for supporting cyber-physical interactions and managing energy resources, and smart grid is emerging as the next generation energy management paradigm. Toward the green energy management and smart grid, there are several open issues to be explored. This special issue is to provide a platform for the last results in the related topic

Distributed security for multi-agent systems – review and applications

As two major communication technologies, the Internet and wireless, are maturing rapidly to dominate our civilised life, the authors urgently need to re-establish users' confidence to harvest new potential applications of large-scale distributed systems. Service agents and distributed multi-agent systems (MASs) have shown the potential to help with this move as the lack of trust caused by heavily compromised security issues and concerns coupled with the out-of-date solutions are hindering the progress. The authors therefore seek new remedies to ensure that the continuity in developing new economies is maintained through building new solutions to address today's techno-economical problems. Following a scan of the literature the authors discuss the state-of-the-art progress followed by some observations and remarks for the researchers in the field. Here the authors recognise the need for new 'distributed security' solutions, as an overlay service, to rejuvenate and exploit the distributed artificial intelligence (AI) techniques for secure MAS as a natural solution to pave the way to enable a long awaited application paradigm of the near future

Ubiquitous wireless telemedicine

A general overview of the emerging wireless and networking technologies and their use to promote the ultimate goal of global health by means of deployment of a telemedicine paradigm is discussed. To achieve this the authors conduct a state-of-the-art study of recent wireless and medical sensor technologies in conjunction with investigation of continuously growing pressures for a better healthcare service throughout the world triggered by the growing age population, social transformations. The study reveals that in spite of available superior technological solutions the services are mostly too expensive, mostly inadequate to respond to the growing demand. Then it proposes a flagship solution of making the best use of the next generation of 'wireless computing' for building a new harmonised healthcare infrastructure for which the authors need to encourage researchers in the development of an innovative media-independent ubiquitous wireless telemedicine system for more cost effective superior quality healthcare services

Modelling of cardiorespiratory endurance for Smart Sensor Enabled Exercising Course Design

Smart space approach to the deployment of new technologies in future educational systems requires true technological innovation and a practical way to embed the required sensing and actuating devices. Augmented reality (AR) as a new technology, an extension to these devices, has been used in this paper to create a smart environment for integrating practical indoor exercises with the learning courses of classic education to improve students' health. Modelling our statistical measurement results of the Cardiorespiratory Endurance (CRE) for six groups of students provides the main purpose of this paper which facilitates the impact maximization of our AR-integrated exercising education system to help to design future courses in a basic but most effective way to allocate the best set of exercises for each student. Using the new method shows the stepping exercise can expect to gain male students a heart performance of 16.89% over the traditional method for an average maximum of as high as 21.37% heart performance improvement. In some specific cases of extreme physical conditions the student would be advised to take few specific exercises only