Editorial

摘要

This issue of the International Journal of Pervasive Computing and Communication contains six papers covering a number of hot research topics, including energy saving in wireless sensor networks, security issues in IoT systems, activity recognition, transfer learning and participatory sensing systems for pervasive healthcare and efficient message routing in opportunistic networks. These papers represent and reflect the latest state-of-the-art of research and development in these related areas which help to identify opportunities and challenges for interested researchers and technology and system developers, and inspire and provoke follow-up research in the time to come. The following is a short brief for each paper.