Exchange Communication Point Modeling in the context of the Enterprise Architecture

It is important to understand the performance and operation of an Internet Exchange Point to improve the management, and to reduce the cost associated with implementation and the information shared. Enterprise Architecture supports the design of systems, according to the business domain processes, network infrastructure and all the different applications running. Existing Enterprise Architecture modelling languages only provide a general concept of a network and do not represent specific information such as the protocols used, the internet protocols or the network addresses used for sharing information. This paper proposes a set of new concepts and attributes to the technology layer of reference language (ArchiMate) to enhance the representation and management of the network infrastructure. The ArchiMate language extensions are then used in modelling two Case Studies of Internet Exchange Point implementation in the Portuguese Public Administration. It was possible to compute which services will have impact in case of failure

Interim research assessment 2003-2005 - Computer Science

This report primarily serves as a source of information for the 2007 Interim Research Assessment Committee for Computer Science at the three technical universities in the Netherlands. The report also provides information for others interested in our research activities

Towards self-organizing logistics in transportation:a literature review and typology

Deploying self-organizing systems is a way to cope with the logistics sector's complex, dynamic, and stochastic nature. In such systems, automated decision-making and decentralized or distributed control structures are combined. Such control structures reduce the complexity of decision-making, require less computational effort, and are therefore faster, reducing the risk that changes during decision-making render the solution invalid. These benefits of self-organizing systems are of interest to many practitioners involved in solving real-world problems in the logistics sector. This study, therefore, identifies and classifies research related to self-organizing logistics (SOL) with a focus on transportation. SOL is an interdisciplinary study across many domains and relates to other concepts, such as agent-based systems, autonomous control, and decentral systems. Yet, few papers directly identify this as self-organization. Hence, we add to the existing literature by conducting a systematic literature review that provides insight into the field of SOL. The main contribution of this paper is two-fold: (i) based on the findings from the literature review, we identify and synthesize 15 characteristics of SOL in a typology, and (ii) we present a two-dimensional SOL framework alongside the axes of autonomy and cooperativity to position and contrast the broad range of literature, thereby creating order in the field of SOL and revealing promising research directions.</p