Autonomous Aerial Ice Observation for Ice Defense

One of the tasks in ice defense is to gather information about the surrounding ice environment using various sensor platforms. In this manuscript we identify two monitoring tasks known in literature, namely dynamic coverage and target tracking, and motivate how these tasks are relevant in ice defense using RPAS. An optimization-based path planning concept is outlined for solving these tasks. A path planner for the target tracking problem is elaborated in more detail and a hybrid experiment, which consists of both a real fixed-wing aircraft and simulated objects, is included to show the applicability of the proposed framework.(c) 2014 Norwegian Society of Automatic Control. Creative Commons Attribution 3.0 Unported (CC BY 3.0) license. See: http://creativecommons.org/licenses/by/3.0/

Searching in variably connected P2P networks

Peer-to-Peer networks are gaining popularity through file-sharing communities. Most P2P networks demand a certain stability from it's nodes in order to function satisfactory. A variably connected P2P network, however, is a network where the connectivity of nodes might vary greatly over time. The nodes can be in different connection states, such as connected to the Internet or moving between networks as well as ad-hoc or offline operation