The service-oriented paradigm plays an increasingly significant role in designing and governing IT architectures in organizations. The identification of services belongs to the most important parts of the service management lifecycle and is essential for the successful implementation of service-oriented architectures (SOA). However, existing methods for service identification mostly ignore situ...

This article proposes a theory that links issue salience and actor polarisation to the uses of learning heuristics in policy process. In harking back research on public policy, behavioural economics, crisis management, we argue makers use two when they update their ideas: policy-oriented power-oriented learning. The develops theoretical expectations link constellations To illustrate expectation...

To give a consistent and more valuable feature on models, we propose that model-driven processes should be able to reuse the expert knowledge generally expressed in terms of patterns. In order to formalize and use them, some design pattern ontologies have been developed. To share them on the Web they have been implemented using the OWL language. They can be easily interrogated with dedicated qu...

the advantages and special characteristics of service oriented architecture and expansion of employing such architecture have brought security topics which are different in some cases from the security principles of traditional information systems. in this article our aim is the examination of various indices of security and the presentation of strategies for security in information systems by ...

Service-orientierte Architektur (SOA) ist eine geschäftlich motivierte IT-Architektur, die die Integration von Geschäftsfunktionen als verbundene, wiederverwendbare Dienste (Services) unterstützt. SOA-Migration bezeichnet die Umsetzung existierender Architekturen – die sehr unterschiedlich geartet sein können – in eine SOA. Hierbei liegt der Schwerpunkt meist auf der Anwendungsarchitektur. Bei ...

This paper is devoted to an oriented coloring problem motivated by a task assignment model. A recent result established the NPcompleteness of deciding whether a digraph is k-oriented colorable; we extend this result to the classes of bipartite digraphs and circuit-free digraphs. Finally, we investigate the approximation of this problem: both positive and negative results are devised.

The huge investment in 3G mobile licences is an incentive to develop extra services above and beyond basic telephony and data services. Service control provides an infrastructure to deliver services, particularly those of a real-time nature. This paper focuses on the progress in developing service control in the context of the 3GPP Release 4/5 network. To achieve the objectives for service evol...

• Technology analysts are reporting on the state-of-the-practice, highlighting emerging practices, principles, adoption maturity and product support. For example, Zapthink provides many levels of reports covering SOA practice ranging from patterns ensuring adoption of SOA principles to antipatterns showing common practitioner mistakes (http://www.zapthink.com/ cluster.html?id=practice.) • Compr...

Recently microservices have emerged as a new architectural pattern which promises many advantages. Services are modeled along business entities, which should result in a flexible system. Apart from that the pattern promises better fault resilience against outages and better performance regarding scalability. In this paper we explore the differences between several architectural styles where we ...

In contemporary aspect-oriented languages, pointcuts are usually specified directly in terms of the structure of the source code. The definition of such low-level pointcuts requires aspect developers to have a profound understanding of the entire application’s implementation and often leads to complex, fragile, and hard to maintain pointcut definitions. To resolve these issues, we present an as...