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Full-Text Articles in Engineering

Modeling Adaptive Middleware And Its Applications To Military Tactical Datalinks, Jason T. Lawson Sep 2005

Modeling Adaptive Middleware And Its Applications To Military Tactical Datalinks, Jason T. Lawson

Theses and Dissertations

Open systems solutions and techniques have become the de facto standard for achieving interoperability between disparate, large-scale, legacy software systems. A key technology among open systems solutions and techniques is middleware. Middleware, in general, is used to isolate applications from dependencies introduced by hardware, operating systems, and other low-level aspects of system architectures. While middleware approaches are or will be integrated into operational military systems, many open questions exist about the appropriate areas to applying middleware. Adaptive middleware is middleware that provides an application with a run-time adaptation strategy, based upon system-level interfaces and properties. Adaptive middleware is an example …


Spawn: Service Provision In Ad-Hoc Wireless Networks, Radu Handorean, Gruia-Catalin Roman, Rohan Sen, Gregory Hackmann, Christopher Gill Aug 2005

Spawn: Service Provision In Ad-Hoc Wireless Networks, Radu Handorean, Gruia-Catalin Roman, Rohan Sen, Gregory Hackmann, Christopher Gill

All Computer Science and Engineering Research

The increasing ubiquity of wireless mobile computing platforms has opened up the potential for unprecedented levels of communication, coordination and collaboration among mobile computing devices, most of which will occur in an ad hoc, on-demand manner. This paper describes SPAWN, a middleware supporting service provision in ad-hoc wireless networks. The aim of SPAWN is to provide the software resources on mobile devices that facilitate electronic collaboration. This is achieved by applying the principles of service oriented computing (SOC), an emerging paradigm that has seen success in wired settings. SPAWN is an adaptation and extension of the Jini model of SOC …


Performance Of Java Middleware - Java Rmi, Jaxrpc, And Corba, N. A. B. Gray Jan 2005

Performance Of Java Middleware - Java Rmi, Jaxrpc, And Corba, N. A. B. Gray

Faculty of Informatics - Papers (Archive)

Developers of distributed Java systems can now choose among Java-RMI, CORBA, and Web-Service (JAXRPC) middleware technologies. Performance is one factor that has to be considered in choosing the appropriate technology for a particular application. The results presented in this paper show that the nature of response data has a greater impact on relative performance than has been allowed for in most previous studies. Relative performances of the technologies as measured on simple requests and responses are not representative of the behaviour that can be expected in practical applications.