Web Services are self contained and self described modular applications that can be published, discovered and employed on the Web. Many standard protocols supporting web services have been adopted and more are being proposed. In this paper, we study the issues on providing intelligent web services. We propose the enhancement of web service functionalities by deploying software agents on both se...

Security is a very important aspect for web service technology. Many people find the idea of creating security metrics to be a daunting task. Secure web service discovery aims at finding the best component services that satisfy the end-to-end security requirements between service consumer and service provider. The term "metrics or criteria" refers to specific objectives that have defined securi...

In SIP-based networks, there is a need to provide basic network media services. Such services include network announcements, user interaction, and conferencing services. These services are basic building blocks, from which one can construct interesting applications. In order to have interoperability between servers offering these building blocks (also known as Media Servers) and application dev...

Computer Science) BUILDING SCALABLE AND ADAPTIVE NETWORK SERVICES by Adolfo Francisco Rodriguez Department of Computer Science Duke University

The introduction of Private Finance Initiative in the United Kingdom has prompted the need for quality whole life cost information. This in turn has led to a search for new innovative methods for producing whole life cost information. The research reported in this paper is a part of an overall approach being developed for whole life costing of building services. A particular problem identified ...

The article describes the environment of WPS-based (Web Processing Service) distributed services, that uses scenarios in JavaScript programming language in order to integrate services with each other. The environment standardizes data processing procedures, stores all services-related information and offers the set of basic WPS-services.

A Grid portal is a user’s point of access to a Grid system [3,5,6,9]. It provides an environment where the user can access Grid resources and services, execute and monitor Grid applications, and collaborate with other users. A number of Grid portals exist or are currently under construction including the NEESgrid Portal [14], the Alliance Portal [22], the GENIUS Portal for the European Data Gri...

Survivable systems—that is, systems that can continue to provide service despite failures, intrusions, and other threats—are increasingly needed in a wide variety of civilian and military application areas. As a step toward realizing such systems, this paper advocates the use of redundancy and adaptation to build survivable services that can provide core functionality for implementing survivabi...