Aligning ontologies is a crucial and tedious task. Matching algorithms and tools provide support to facilitate the task of the user in defining correspondences between ontologies entities. However, automatic matching is actually limited to the detection ...

The collaboration of services scattered over the internet is often required in solving a complicated scientific problem or finishing a complex business process. Centralized client/server architecture used in traditional service collaboration mechanism ...

Adaptation of system parameters is acknowledged as a requirement to scalable and dependable distributed systems. Unfortunately, adaptation cannot be effective when provided solely by individual system components as the correct decision is often tied to ...

Web services have been widely employed to allow interoperability among applications and/or technologies. However, the standard technologies and protocols which provide the foundation for Web Services do not address issues such as fault tolerance and ...

Total Order Broadcast protocols are important tools to ensure coherence across distributed systems. Contrarily to classical distributed systems, pervasive systems bring important constraints related to the performance and reliability of the network and ...

Distributed protocols executing in uncertain environments, like the Internet, had better adapt dynamically to environment changes in order to preserve QoS. In a previous work, it was shown that QoS adaptation should be dependable, if correctness of ...

This paper introduces an approach to develop component-based adaptive distributed applications. Our approach separates the communication and the functional aspects of a distributed application and specifies the communication part as an abstract ...

Database replication has been researched as a solution to overcome the problems of performance and availability of distributed systems. Full database replication, based on group communication systems, is an attempt to enhance performance that works well ...

Distributed systems, services and databases are at the core of the information society and increasingly pervade many aspects of our daily lives. While mobility and pervasiveness require support for systems that adapt themselves to changing environments, ...

This paper describes a new architecture for supporting the anonymous submission of votes in the REVS voting system. Furthermore, it enables voters to verify during the election that the electoral system processed correctly their anonymously submitted ...

M/M/1 queues have been traditionally used to model several systems like phone calls at a call center, banking services and so on. However, recent studies showed that it does not model properly a web server system. In this paper we investigate the impact ...

Distributed applications involving mobile devices interconnected by wireless networks may benefit both from multiagent technology and context-aware programming techniques. We present a system running on a agent platform to allow access to services that ...

We present a P2P-based multimedia ubiquitous capture platform tailored to support co-located collaborative work.

A pattern that can be used to design Aspect-Oriented Frameworks that require data from a base code is presented. The framework design is explicitly separated into two parts when this pattern is used: one dealing with the composition mechanisms and ...

In this paper we present our efforts on including semantic information on a middleware for message exchanging. The middleware configuration module makes use of a rule-based reasoner that infers the best module to be used on a given configuration of ...

We studied the middleware platform, i.e. COSMOS (Common System for Middleware of Sensor Network) as a national project in Korea, for various types of sensor networks such as the Zigbee wireless sensor network (WSN), the CDMA cellular network, RFID and ...

XActor is a distributed transaction manager that affords transactional remote invocations over an open-ended set of transports. Its support to transactional interactions is dynamic, in the sense that the transaction manager fully exploits a collection ...

Conventional e-mail systems are prone to problems that impact their scalability and dependability. E-mail systems operate following a "push-based" approach: the sender side server pushes the e-mails it wants to send to the corresponding receivers' ...

This paper proposes a way to enable approximate queries in a peer-to-peer network by using a special encoding function and error correcting codes. The encoding function maintains neighborhood relationships so that two similar inputs will result in two ...