Data-centric design is emerging as a key tenet for building advanced data-critical distributed real-time and embedded systems. These systems must find the right data, know where to send it, and deliver it to the right place at the right time. Data Distribution Service (DDS) specifies an API designed for enabling real-time data distribution and is well suited for such complex distributed systems...

A new reflective QoS-enabled load management framework for component oriented middleware is presented. The proposed framework offers the possibility of automatically selecting the optimal load distribution algorithms and changing the used load metrics at runtime, according to workload time evolution. QoS service level agreements are being offered at application level, transparent to the managed...

Currently the integration of voice and data in mobile communication networks is still in its infancy. Restrictions to multimedia communication are placed by changing quality of service and the use of separate voice and data bearer services. This paper describes how the middleware architecture developed in the ACTS project MOVE provides for voice/data integrated communication even over a single ...

A Data Grid is a wide area computing infrastructure that employs Grid technologies to provide storage capacity and processing power to applications that handle very large quantities of data. Data Grids rely on data replication to achieve better performance and reliability by storing copies of data sets on different Grid nodes. When a data set can be modified by applications, the problem of main...

Being the most popular runtime infrastructure for distributed systems, middleware can be viewed as a collection of common services. Since the development, deployment and maintenance of distributed systems rely largely on middleware services, the failure of middleware services puts a significant impact on the reliability and availability of the whole system. Though recovery-based fault tolerance...

Distributed applications require specific middleware support for semantics and run-time constraints for a wide range of hardware or software configurations. However, their full specifications and existing implementations show they share functional notions and run-time mechanisms. Thus, distribution infrastructures could be prototyped from a given set of middleware components. Generic middleware...

Monitoring of Service Level Agreements (SLAs) is required to determine if the Quality of Service (QoS) provided by a service provider satisfies the expectations of a service consumer. Although tools exist that can generate the software required to evaluate SLAs from the SLA specifications themselves, the code required to gather metric data is still predominantly coded by hand: a time consuming ...

As the importance of robot software has increased, much research about robot middleware has been performed extensively during the past several years. Most of these systems are based on client-server and service oriented-based system architecture. Robot middleware usually provides executable environments that robot software developers are easily able to develop flexible robot services through va...

Subject of this paper is the advancement of the middleware capabilities and configuration flexibility in complex context-aware distributed systems, according to the Service-Oriented Architecture (SOA) paradigm. Results are presented on an ongoing work concerned with the architecting, design and development of a message-oriented middleware for atomic and composite service brokering, named SAI mi...