Mobile Ad Hoc Networks (MANETs) are strongly impacted by the mobility of the ad hoc nodes. Mobility models help engineers to abstract the changes of position in network users. Different mobility models have already been proposed to characterize the behaviors of mobile devices that are greatly correlated to the conditions of the possible scenarios where networks can be deployed. In the context of mobile ad hoc networks, the Random WayPoint model has received significant attention and it has become one of the most employed mobility patterns. However, a formal description of the time during which a generic N-hop path is valid has not been proposed yet for this model. In this paper, the authors provide an analytical model for link duration as well as an analytical study of path duration in multi-hop wireless networks. The predicted results are compared with measured data and good agreement is reported.

UNLABELLED: PreP is a versatile, powerful, standalone application that aims at pre-processing gene expression data. AVAILABILITY: Documentation and executable file for MS-Windows are available at http://chirimoyo.ac.uma.es/bitlab/services/index.htm

Abstract Summary: Engene is a versatile, and platform-independent web tool for exploratory analysis of gene expression data that aims at storing, visualizing and processing large sets of gene expression patterns. Availability: Access to engene is available on request at http://www.engene.cnb.uam.es Contact: [email protected] * To whom correspondence should be addressed.