Panos Periorellis

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The Internet of Things and Services is a rapidly growing concept that illustrates that the ever increasing amount of physical items of our daily life which become addressable through a network could be made more easily manageable and usable through the use of Services. This surge of exposed resources along with the level of privacy and value of the(More)
This paper shows how modern structuring techniques can be employed in integrating complex web applications such as Travel Agency systems. The main challenges the developers of such systems face are dealing with legacy web services and incorporating means for tolerating errors. Because of the very nature of such systems, exception handling is the main(More)
The report discusses our experiences of using two OASIS Web service standards; namely eXtensible Access Control Mark-up Language which abbreviates to (XACML) and Security Assertion Mark-up Language or SAML as it is commonly known. Within the domain of the GOLD project we have combined these two standards to offer single login mechanisms, including a simple(More)
Currently, business requirements for rapid operational efficiency, customer responsiveness as well as rapid adaptability are driving the need for ever increasing communication and integration capabilities of the software assets. Enterprise Application Integration (EAI), which is the process of integrating enterprise systems with existing applications and in(More)
On Structuring Integrated Web Applications for Fault Tolerance Alexander Romanovsky, Panos Periorellis, Avelino F. Zorzo University of Newcastle upon Tyne, UK {alexander.romanovsky, panayiotis.periorellis}@ncl.ac.uk Pontifical Catholic University of RS, Brazil zorzo@inf.pucrs.br The intention of this paper is to demonstrate how modern structuring techniques(More)
The principal aim of the GOLD project (Grid-based Information Models to Support the Rapid Innovation of New High Value-Added Chemicals) is to carry out research into enabling technology to support the formation, operation and termination of Virtual Organisations (VOs). This technology has been implemented in the form of a set of middleware components, which(More)
A fundamental ambition of Grid and distributed systems is to be capable of sustaining evolution and allowing for adaptability [1, 2]. Furthermore, as the complexity and sophistication of theses structures increases, so does the need for adaptability of each component. One of the primary benefits of Service Oriented Architecture (SOA) is the ability to(More)
One of the primary benefits of Service Oriented Architecture (SOA) [1] is the ability to compose applications, processes or more complex services from other services. As the complexity and sophistication of theses structures increases, so does the need for adaptability of each component. In recent years, a lot of effort has been put into improving the(More)
We have currently designed a set of middleware technologies which are being implemented to address issues such as trust, security, contract management and monitoring, information management and others to enable virtual collaboration between companies. In this paper we discuss the generic set middleware mechanisms we have implemented for enabling a virtual(More)