The Dynamic Data eXchange (DDX) is our third generation platform for building distributed robot controllers. DDX allows a coalition of programs to share data at run-time through an efficient shared memory mechanism managed by a store. Further, stores on multiple machines can be linked by means of a global catalog and data is moved between the stores on an as needed basis by multi-casting. Heter...

The National Agricultural Decision Support System (NADSS) is a joint project with the U.S. Department of Agriculture and the University of Nebraska-Lincoln. The initial focus of the NADSS project is to improve the quality and accessibility of drought related knowledge, information, and data for drought risk management. At the core of the NADSS project is a software architecture for distributed ...

Networked heterogeneous systems pose a great challenge for parallel and distributed applications. Middleware provides a critical link between the vast resources and the application domain that simplifies development, provides robust and reliable access to resources, helps optimize resource utilization, and facilitates the generation of stable distributed software. In this paper, we discuss a la...

The distributed multimedia multiuser applications are generally composed of multiple individually-controlled application service elements, which require various complex communication services. In this paper, we present HEART; a software architecture to support distributed multimedia multiuser applications in high-speed networks. The proposed HEART software architecture consists of three layers;...

Acknowledgments We thank Jan Kofoed from the Danish Maritime Institute for sharing his knowledge of the 3MS system with us and for his careful review of the report; Mikael Arctaedius for responsive support regarding his Object Plant application which facilitated the code analysis and the generation of UML diagrams ; Eyðun Eli Jacobsen and Bent Bruun Kristensen, both The Maersk Mc-Kinney Moller ...

As distributed multimedia applications become more widely diiused, systems for QoS management are increasingly essential. In this paper we will present an architecture for distributed QoS management based on software agents. A software agent is a software module often equipped with artiicial intelligence mechanism which is capable, autonomously or in cooperation with other agents, of solving a ...

The goal of this project is developing an expert system that aims to help software designers while designing objectoriented software by automating object-oriented design process. Some novel points are : using an interactive user interface, to enable software designer and expert system can communicate with each other in order to determine the best design, without disturbing the creativity of the...

Distributed control systems are a category of high complex systems that include a large number of devices controlled and harmonized by computer systems. Their reliability and functional correctness always need to be guaranteed as their mission-critical feature. The analysis process for complex control systems consists of proving or verifying that the designed system indeed meets certain specifi...

The IPACS-project (Integrated Performance Analysis of Computer Systems) was founded by the Federal Department of Education, Science, Research and Technology (BMBF) in the program High-Performance-Computing to define a new standard for measuring system performance. One part of this research project is the design of a distributed architecture for execution of benchmarks on High Performance Comput...

This paper sketches an environment for distributed education that supports the lecturer in preparing and performing a computer-supported session over the network (\virtual classroom"). This task is particularly challenging because it requires the coordination of concurrent activities operating in real-time on objects of diierent types located in a distributed network environment. We describe th...