Web Services Support for Dynamic Business Process Outsourcing

Outsourcing of business processes is crucial for organizations to be effective, efficient and flexible. To meet fast-changing market conditions, dynamic outsourcing is required, in which business relationships are established and enacted on-the-fly in an adaptive, fine-grained way unrestricted by geographic distance. This requires automated means for both the establishment of outsourcing relationships and for the enactment of services performed in these relationships over electronic channels. Due to wide industry support and the underlying model of loose coupling of services, Web services increasingly become the mechanism of choice to connect organizations across organizational boundaries. This paper analyzes to which extent Web services support the dynamic process outsourcing paradigm. We discuss contract -based dynamic business process outsourcing to define requirements and then introduce the Web services framework. Based on this, we investigate the match between the two. We observe that the Web services framework requires further support for cross - organizational business processes and mechanisms for contracting, QoS management and process-based transaction support and suggest ways to fill those gaps

Establishing and developing strategic relationships - the role for operations managers

Purpose – The objectives of this paper are, first to identify, from the literature, the key themes in the management of strategic relationships, second to apply those themes to understand how exemplary organisations establish and develop strategic relationships and third to determine the role of operations managers in this process. Design/methodology/approach – This empirically based research comprised four phases; interviews with managers to identify exemplars, interviews with managers from 27 organisations, data analysis and testing of the findings. Findings – From a theoretical point of view, a revised definition of strategic relationships has been proposed. Many previously disparate elements of relationships have been brought together into seven dimensions of strategic relationships. The scope and nature of exemplary relationships have been captured within each of these dimensions identifying 24 elements, and suggested the key roles for operations managers in establishing and developing their strategic business relationships. Research limitations/implications – This research has responded to the call to help operations managers understand the skill sets required to help them establish and develop strategic business relationships. It has contributed to the growing literature on business relationships and also provided practical guidance for operations managers. The research has a number of inherent weaknesses including the interpretative nature of the analysis and that the interviews were only carried out with one party to the exemplary relationships. The focus of the research was limited to exemplary strategic relationships and the study was conducted in one sector, though a range of types of organisations were involved. Practical implications – From a practitioner perspective, the outputs from the research have been summarised into a number of guidelines which flesh out the role for operations managers looking to identify, establish, evaluate or strengthen their role in establishing and developing strategic business relationships. Originality/value – The paper provides an original and detailed perspective into the nature of strategic business relationships, irrespective of their position in the supply chain, and identifies how such relationships can be established and developed

Metamodel-based model conformance and multiview consistency checking

Model-driven development, using languages such as UML and BON, often makes use of multiple diagrams (e.g., class and sequence diagrams) when modeling systems. These diagrams, presenting different views of a system of interest, may be inconsistent. A metamodel provides a unifying framework in which to ensure and check consistency, while at the same time providing the means to distinguish between valid and invalid models, that is, conformance. Two formal specifications of the metamodel for an object-oriented modeling language are presented, and it is shown how to use these specifications for model conformance and multiview consistency checking. Comparisons are made in terms of completeness and the level of automation each provide for checking multiview consistency and model conformance. The lessons learned from applying formal techniques to the problems of metamodeling, model conformance, and multiview consistency checking are summarized

Exploiting rules and processes for increasing flexibility in service composition

Recent trends in the use of service oriented architecture for designing, developing, managing, and using distributed applications have resulted in an increasing number of independently developed and physically distributed services. These services can be discovered, selected and composed to develop new applications and to meet emerging user requirements. Service composition is generally defined on the basis of business processes in which the underlying composition logic is guided by specifying control and data flows through Web service interfaces. User demands as well as the services themselves may change over time, which leads to replacing or adjusting the composition logic of previously defined processes. Coping with change is still one of the fundamental problems in current process based composition approaches. In this paper, we exploit declarative and imperative design styles to achieve better flexibility in service composition

Media contracts formalization using a standardized contract expression language

Contract Expression Languages allow representing business contracts in a digital and structured form. Some examples are the Content Reference Forum format, the OASIS eContracts standard or a proposed extension for MPEG-21 Part 5. These formats have influenced the design of the MPEG-21 Contract Expression Language (CEL), which has been recently specified by modelling the most relevant clauses in audiovisual contracts. The MPEG-21 CEL, described in this paper, defines a language for representing media contracts as XML. It is structured in two schemas, a core defining the structural elements of a contract, and an extension with vocabulary for specific applications.Peer ReviewedPostprint (author’s final draft

Semantic-based policy engineering for autonomic systems

This paper presents some important directions in the use of ontology-based semantics in achieving the vision of Autonomic Communications. We examine the requirements of Autonomic Communication with a focus on the demanding needs of ubiquitous computing environments, with an emphasis on the requirements shared with Autonomic Computing. We observe that ontologies provide a strong mechanism for addressing the heterogeneity in user task requirements, managed resources, services and context. We then present two complimentary approaches that exploit ontology-based knowledge in support of autonomic communications: service-oriented models for policy engineering and dynamic semantic queries using content-based networks. The paper concludes with a discussion of the major research challenges such approaches raise