This paper is part of a study of intelligent architectures for distributed control and communications systems. The study focuses on optimizing control systems by evaluating the performance of middleware through quality of service (QoS) parameters and the optimization of control using Quality of Control (QoC) parameters. The main aim of this work is to study, design, develop, and evaluate a dist...

To achieve an appropriate tradeoff between security and performance for wireless applications, a tunable and differential treatment of security is required. In this paper, we present a tunable encryption service designed as a middleware that is based on a selective encryption paradigm. The core component of the middleware provides block-based selective encryption. Although the selection of whic...

In this paper, we explore the tradeoffs and opportunities in porting a high-throughput Grid computing middleware to a high-performance service oriented environment. We present the limitations of the Grid computing middleware when operating in such a performance sensitive environment and suggest ways of overcoming these limitations. We focus on exploiting the computation and communication hetero...

The use of sensor networks in different kinds of sophisticated applications is emerging due to several advances in sensor/embedded system technologies. However, the integration and coordination of heterogeneous sensors is still a challenge, especially when the target application environment is susceptible to changes. Such systems must adapt themselves in order to fulfil increasing requirements....

Globally distributed services need more than location transparency. An implementation of such a service has to scale to millions of users from all over the world. Those users may have different and varying quality-of-service requirements that have to be considered for an appropriate distribution and installation of service components. The service also has to scale to thousands of administrative...

MPEG-M is a suite of ISO/IEC standards (ISO/IEC 23006) that has been developed under the auspices of Moving Picture Experts Group (MPEG). MPEG-M, also known as Multimedia Service Platform Technologies (MSPT), facilitates a collection of multimedia middleware APIs and elementary services as well as service aggregation so that service providers can offer users a plethora of innovative services by...

Modelling and implementing distributed systems leads often to the same problems. By ignoring partial failures, dynamic changes in bandwiths, security issues etc. object-orientation provides a very well suited abstraction. But when actually dealing with the aspects arising from the distribution, former clear designs loose their elegance. Little or none support is provided by current implementati...

This article describes the new concept of service oriented software architecture for mobile sensor networks. By the use of this architecture, a flexible, scalable programming of applications based on an adaptive middleware is possible. The middleware supports mechanisms for cooperative data mining, self-organization, networking, and energy optimization to build higher-level service structures. ...

Assuring end-to-end quality-of-service (QoS) in distributed real-time and embedded (DRE) systems is hard due to the heterogeneity and scale of communication networks, transient behavior, and the lack of mechanisms that holistically schedule different resources end-to-end. This paper makes two contributions to research focusing on overcoming these problems in the context of wide area network (WA...

www.rfdesign.com April 2006 applications will span multiple, networked computers. Disaggregated or distributed systems are much easier to scale, make fault-tolerant, and upgrade. This distribution calls for new application infrastructures. Publish-subscribe communications is a key enabler of the new distributed architecture. Data sources publish their data to the network; data users subscribe t...