As large-scale coach education programs receive a growing amount of attention and investment (e.g., human financial resources), the case for increased understanding their impact is pressing matter. In this paper, authors outlined creation Flemish Interactive Coaching Monitoring System (FICOMS) within School Coach Education (Belgium). The FICOMS data warehouse consisting multiple databases, whic...

Recent research in federated database systems has advanced in the direction of federations of multimedia databases. However, in each project studied, there has been little emphasis placed on the subject of meta-models. Conversely, standard database systems (relational, object-relational and object-oriented) define metadata models that lack multimedia and federation features. In this paper, a sp...

We present an experimental study of large-scale RDF federations on top of the Bio2RDF data sources, involving 29 data sets with more than four billion RDF triples deployed in a local federation. Our federation is driven by FedX, a highly optimized federation mediator for Linked Data. We discuss design decisions, technical aspects, and experiences made in setting up and optimizing the Bio2RDF fe...

As different Cloud Management Frameworks and resource providers are settling in the market there is the need to grasp the interoperability problems present in current infrastructures, and study how existing and emerging standards could enhance user experience in the cloud ecosystem. In this paper we will review the current open challenges in Infrastructure as a Service cloud interoperability an...

Employing a political-economics approach, this paper compares small states and unions when the former fail to internalize cross-border externalities of publicly provided goods. It discusses two types of unions: federations with more than one level of government and unitary states. While unitary states are unable to differentiate public spending ac-cording to differing preferences, rents of gove...

Deciding who to trust in the internet of services paradigm is an important and open question. How to do it in an optimal way is not always easy to determine. Trust is usually referred to a particular context, and sometimes a single user interacts in more than one given context. We are interested in investigating how a Federated Reputation System can help exporting trust perceptions from one con...

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W e discuss the modification of queries against a n integrated view in a federation of object-oriented databases. W e present a generalisation of existing algorithms for simple global query processing that works fo r arbitrarily defined integration classes. W e then extend this algorithm to deal with object-oriented features such as queries involving path expressions and nesting. W e show how p...

Digital preservation aims at guaranteeing that data or digital objects remain authentic and accessible to users over a long period of time, maintaining their value. Several communities, like biology, medicine, engineering or physics, manage large amounts of scientific information, including large datasets of structured data that matters to preserve, so that it can be used in future research. To...