Middleware for Pervasive and Ad Hoc Computing

Probably contravening copyright, the best paper candidates are online as wakeman and dimitrov .

The workshop is finally kicking off with Steve Neely providing the introductory remarks. We've added a new poll to the side of the blog -- please participate and vote for the best paper!! The candidates (pre-selected by program committee) are from Wakeman et. al ., and Dimitrov et. al. Both these papers received identical ratings during the review process -- the "winner" will be announced at the end of the workshop..

As you may have noticed in the workshop program , we have a final 30-minute plenary discussion to close out the workshop. In order to make this as interactive and useful as possible, we decided to preface this with a 20-minute session called "1-minute madness". Some of you may have seen this forum before at other workshops. Basically, this is a soapbox of sorts -- anyone (presenters, organizers, attendees) is welcome to participate and provide fodder for the follow-up discussion. The idea is to make a 1-minute pitch about a topic of interest. You may elect to use slides or not - if the former, a single slide is ideal but you can use your discretion here. For convenience, here are some possible 'themes' for the pitch. These are suggestions only: Research in a nutshell . What problem are you trying to solve? Why is it important? What makes your solution novel? Hot Topics . What should the MPAC community's next big research challenge be? Why? Experience Lessons . S...

Ian Wakeman , University of Sussex Dan Chalmers , University of Sussex Michael Fry , University of Sydney Abstract: In this paper, we outline an approach to the identification of entities for access control that is based on the membership of groups, rather than individuals. By using group membership as a level of indirection between the individual and the system, we can increase privacy and provide incentives for better behaviour. Privacy comes from the use of pseudonyms generated within the group and which can be authenticated as belonging to the group. The incentives for better behaviour come from the continuous nature of groups - members may come and go, but the group lives on, and groups are organised so as to ensure group-longevity, and prevent actions which may harm the group’s reputation. We present a novel pseudonym generation mechanism suitable for use in groups without a centralised administration. Finally, we argue that the use of group membership as the basis for formulatin...

Fernando Trinta , University of Fortaleza Davi Pedrosa , Federal University of Pernambuco Carlos Ferraz , Federal University of Pernambuco Geber Ramalho , Federal University of Pernambuco Abstract: Crossmedia games are a genre of pervasive gaming where a single game instance can be played with a variety of heterogeneous devices that support dierent forms of players' participation and deliver dierent game experiences. In this paper, we present the PM2G initiative, a Service-Oriented Architecture aiming at supporting crossmedia games' development and execution. Due to their relevance in this document, Content Adaptation and Interaction Adaptation Services are detailed. We also present a case study, a game called Pervasive Wizards, which is used to validate our architecture. Finally, we also present some performance results obtained in our experiments. ACM Copyright Notice Copyright © by the Association for Computing Machinery, Inc. Permission to make digital or hard copies of p...

Salman Taherian , University of Cambridge Jean Bacon , University of Cambridge Abstract: With the increased realisation of the benefits of studying environmental data, sensor networks are rapidly scaling in size, heterogeneity of data, and applications. In this paper, we present a State-based Publish/Subscribe (SPS) framework for sensor systems with many distributed and independent application clients. SPS provides a state-based information deduction model that is suited to many classes of sensor network applications. State Maintenance Components (SMCs) are introduced that are simple in operation, flexible in placement, and decomposable for distributed processing. Publish/Subscribe communication forms the core messaging component of the framework. SPS uses the decoupling feature of Pub/Sub and extends this across the SMCs to support a more flexible and dynamic system structure. Our evaluation, using real sensor data, shows that SPS is expressive in capturing conditions, and scalable in...