As agent technology acceptance grows, there is a need for software engineering approaches to deal with the design of large, complex multiagent applications. Currently, existing approaches work well for small systems but are not well suited for large, complex applications. Thus, we propose extending multiagent approaches with service-oriented principles to simplify the design of such systems. Ou...

Considering the existing problems in Web service such as lack of semantic information and interoperability, atomic services can not cooperate with each other and be combined into composite services. In this paper, based on extended UDDI, we present a semantic annotation framework for Web service description and composition. The novel service matching algorithm not only takes into account the he...

Ambient Intelligence (AmI) describes environments that sense and react to the humans in time to improve their living quality. Software agents are important in realizing such environments. While existing work has focused on individual agent’s reactions, more interesting applications will take place when the agents cooperate to provide composed services to humans. When cooperation is required, th...

Modern applications are inherently heterogeneous: they are built by composing loosely coupled services that are, usually, offered and operated by different service providers. While this approach increases the flexibility of the composed applications, it makes the implementation of security and trustworthiness requirements much more difficult. Therefore there is a need for new approaches that in...

The GridTrust Security Framework (GSF) offers security and trust management for the next generation Grids (NGG). It follows a vertical approach for Grid security from requirements level right down to application and middleware levels. New access control models for collaborative computing, such as the usage control model (UCON), are implemented for securing the Grid systems. The GSF is composed ...

Service composition is a fundamental technique for developing web-service applications. In general, a single service is not enough to achieve the user’s goal, rather several services, often from different providers, are composed dynamically to satisfy a request. Ensuring security in such a system is challenging and not supported by most of the security frameworks proposed in current literature....

The Internet provides possibilities for distributed execution of business processes and Web Services. This caused the emergence of a variety of Web Services that might be composed to accomplish tasks. To efficiently compose these tasks a simple workflow description no longer suffices. We therefore suggest a description based on high-level Petri nets called reference nets, allowing for the consi...

In several scenarios, Semantic Web technologies are gaining momentum as the most promising ones to address the issue of integrating services among different entities, possibly belonging to different location. In particular, Semantic Web Service composition can be used when no individual available service can satisfy a specific client request, but (parts of) available services can be composed an...

The paradigms of service-oriented computing and modeldriven development are becoming of increasing importance in the field of software engineering. According to these paradigms, new systems are composed with added value from existing stand-alone services to support business processes across organizations. Services comprising a system but originating from various sources need to be coordinated. ...

Mobile networks composed of devices interconnected by wireless communication media frequently suffer from partitions. If mobile devices depend on software services running on remote devices, such partitions may render the software services unavailable. We propose the use of code mobility to mitigate the unavailability of software services in mobile networks. We discuss the issues of existing mo...