IEEE 802.11 networks are insecure. Wired Equivalent Privacy (WEP), the security mechanism used in 802.11, was proved to be vulnerable. IEEE 802.11i, the security enhancement, concentrates only on integrity and confidentiality of transmitted frames. Either version did not properly handle the network availability. Because management frames are not authenticated, {802.11, 802.11i} networks are sus...

The aim of this study was to analyze the taxonomy and distribution of the polychaetes of the family Paraonidae from a lagoon-estuarine ecosystem in the Gulf of Mexico. The samples come from 20 soft bottom stations in the Términos Lagoon during the dry and rainy seasons, of which eight included paraonids. In all, 1183 specimens belonging to two new species were identified: Aricidea (Acmira) hirs...

Sensor and Actor Networks (SANETs) represent a specific category of massively distributed systems in which coordination and control of the participating networked nodes is especially challenging. Recently, a number of self-organization methods have been published that focus on network-centric operation in such networks. Rule-based Sensor Network (RSN) is a programming approach that supports thi...

Robust Security Network (RSN) epitomised by IEEE 802.11i substandard is promising what it stands for; robust and effective protection for mission critical Wireless Local Area Networks (WLAN). However, despite the fact that 802.11i overhauls the IEEE's 802.11 security standard several weaknesses still remain. In this context, the complementary assistance of Wireless Intrusion Detection Systems (...

In vehicular networks, supporting user mobility is one of the most challenging issues. Recently, as the desires for the high mobility and high-quality real-time services increase, fast handoff among base stations comes to a center of quality of connections. Therefore, minimizing re-authentication latency during handoff is crucial for revolutionizing the driving environment on public vehicular n...

We study robust network design problems for hazardous materials transportation considering risk uncertainty. Risk uncertainty is considered in two ways: (1) uncertainty on each link for each shipment, and (2) uncertainty on each link across all shipments. We extend an existing heuristic framework to solve these two robust network design problems and propose a Lagrangian relaxation heuristic to ...

It is greatly expected that the relic neutrino background from past supernovae is detected by Superkamiokande (SK) which is now under construction. We calculate the spectrum and the event rate at SK systematically by using the results of simulations of a supernova explosion and reasonable supernova rates. We also investigate the e ect of a cosmological constant, , on the spectrum, since some re...

The purpose of the IEEE 802.11i standard is to endue wireless networks with advanced security by leveraging mature and proven security technologies. The concept of a Robust Secure Network (RSN) as a long-term security architecture was defined in order to provide confidentiality of data being transferred over the wireless medium as well as to provide mutual authentication between mobile stations...

SAIKIRAN RAPAKA, SHIYI CHEN, RAJESH J. PAWAR, PHILIP H. STAUFFER AND DONGXIAO ZHANG Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA [email protected] COE & CCSE, Peking University, Beijing, China EES-6, Los Alamos National Laboratory, Los Alamos, NM 87544, USA Department of Civil and Environmental Engineering, University of Southern California, Los Angele...

J.-P. Issartel Centre d’Enseignement et de Recherche en Environnement Atmosphérique, unité mixte Ecole Nationale des Ponts et Chaussées – Electricité de France, France Projet CLIME, équipe mixte Institut National de Recherche en Informatique et en Automatique – Ecole Nationale des Ponts et Chaussées, France Received: 30 March 2004 – Accepted: 19 April 2004 – Published: 12 May 2004 Correspondenc...