Dear SCPE Reader,
The recent development of applications that exploit multiple information sources, distributed resource processing, user mobility, interaction and information sharing calls for novel models of coordination, data acquisition, transfer and integration, efficient access and processing of information. The articles presented in this issue propose some intelligent distributed models and algorithms that try to cope with the large quantity of information available to users in different application contexts, and draw from different computation paradigms such as multi-agent technology, biologically inspired computation, peer-to-peer systems, mobile ad hoc network, grid computing.
The articles in this issue of SCPE are extended versions of selected papers presented at the workshops ACSys2009 and IDC’2009.
ACSys2009, the 6th Workshop on Agents for Complex Systems was held in Romania, TimiÅoara, September, 26–29, 2009. The workshop was organized in the frame of the 11th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing (SYNASC 2009).
The aim of the ACSys2009 workshop was to bring together researchers and developers from academia and industry in order to discuss current scientific and technical results on using agent technology for solving complex, distributed real-world problems (http://synasc09.info.uvt.ro/workshops/ACSys/).
The article Algorithmic Solutions for Several Offline Constrained Resource Processing and Data Transfer Multicriteria Optimization Problems by Mugurel IonuÅ£ Andreica and Nicolae Å¢ÄpuÅ presents novel algorithmic solutions for several resource processing and data transfer multicriteria optimization problems. The results of most of the presented techniques are strategies which solve the considered problems (almost) optimally.
The article Sensors Data—Stream Processing Middleware Based on Multi-Agent Model by Ovidiu Aritoni and Viorel Negru proposes a multi-agent architecture for an intelligent sensor data processing middleware that allows acquisition, interpretation and aggregation of sensor data-streams. A healthcare system is used for validating the architecture.
The article Context-Aware Emergent Behaviour in a MAS for Information Exchange by Andrei Olaru, Cristian Gratie and Adina Magda Florea presents, based on authors’ previous work on self-organizing multi-agent systems for information exchange, two aspects of context-awareness—pressure and interest—that make the system's emergent behavior context-sensitive and, therefore, more adaptive to a changing environment.
IDC’2009, the 3rd International Symposium on Intelligent Distributed Computing, was held in Cyprus, Ayia Napa, October 13–14, 2009.
The aim of this symposium was to bring together researchers involved in intelligent distributed computing to allow cross-fertilization and synergy of ideas and to enable advancement of researches in the field (http://www.idc2009.cs.ucy.ac.cy/).
The article Efficient Broadcasting in MANETs by Selective Forwarding by Doina Bein, Ajoy K. Datta, and Balaji Ashok Sathyanarayanan presents a new protocol called Efficient Broadcasting by Selective Forwarding that minimizes the number of transmissions or retransmissions needed for broadcasting in mobile ad hoc networks.
The article Group-Based Interactions for Multiuser Applications by Carmen Morgado, José C. Cunha, Nuno Correia, and Jorge Custódio presents a group-based model for the development of interactive applications where multiple users dynamically interact with each other, and which facilitates the organization, access and sharing of content by multiple users. It also describes examples to support communities in tourism and school campus scenarios.
The article Exploring Carrier Agents in Swarm-Array Computing by Blesson Varghese and Gerard Mckee proposes a swarm-array computing approach to bridge the gap between autonomic and parallel computing. The feasibility of this proposal is validated by two simulation studies: using a multi-agent simulator on a Field-Programmable Gate Array, and using Message Passing Interface on a computer cluster.
Great thanks are first given to SCPE and its Editor-in-Chief Dana Petcu who kindly offered the publication of this special issue. We would also like to thank George A. Papadopoulos, who helped with co-organizing IDC'2009.
Viorel Negru, Adina Magda Florea, Costin BÄdicÄ