Ambient-aware continuous care through semantic context dissemination

Background: The ultimate ambient-intelligent care room contains numerous sensors and devices to monitor the patient, sense and adjust the environment and support the staff. This sensor-based approach results in a large amount of data, which can be processed by current and future applications, e. g., task management and alerting systems. Today, nurses are responsible for coordinating all these applications and supplied information, which reduces the added value and slows down the adoption rate. The aim of the presented research is the design of a pervasive and scalable framework that is able to optimize continuous care processes by intelligently reasoning on the large amount of heterogeneous care data. Methods: The developed Ontology-based Care Platform (OCarePlatform) consists of modular components that perform a specific reasoning task. Consequently, they can easily be replicated and distributed. Complex reasoning is achieved by combining the results of different components. To ensure that the components only receive information, which is of interest to them at that time, they are able to dynamically generate and register filter rules with a Semantic Communication Bus (SCB). This SCB semantically filters all the heterogeneous care data according to the registered rules by using a continuous care ontology. The SCB can be distributed and a cache can be employed to ensure scalability. Results: A prototype implementation is presented consisting of a new-generation nurse call system supported by a localization and a home automation component. The amount of data that is filtered and the performance of the SCB are evaluated by testing the prototype in a living lab. The delay introduced by processing the filter rules is negligible when 10 or fewer rules are registered. Conclusions: The OCarePlatform allows disseminating relevant care data for the different applications and additionally supports composing complex applications from a set of smaller independent components. This way, the platform significantly reduces the amount of information that needs to be processed by the nurses. The delay resulting from processing the filter rules is linear in the amount of rules. Distributed deployment of the SCB and using a cache allows further improvement of these performance results

Choosing coalition partners in Belgian local government

Government formation is a crucial phase after elections. This article focusses on coalition formation in Belgian local government after the elections in 2006. Coalition theories have mainly been developed at the national level, but they are also applicable to the local level where there is no shortage of coalitions. This level offers the opportunity to not only test rather classic coalition theories such as minimum size theories or the coalitions' incumbency status. In a federal state like Belgium we can compare the local coalitions with coalitions made at higher levels. The results show that the local political parties prefer to form minimal winning and minimum parties coalitions, but not the smallest coalition that is possible. Coalitions are also more likely to form when they represent the incumbent coalition. Finally, political parties prefer congruent coalitions with the federal and regional government

DISENTANGLING THE EFFECTS OF POLITICAL FRAGMENTATION ON VOTER TURNOUT: THE FLEMISH MUNICIPAL ELECTIONS

Political fragmentation has been shown to be an important determinant of electoral turnout. We introduce an empirical approach that allows disentangling the impact of two dimensions of such fragmentation: the number of parties and the size inequalities between those parties. This is important as it allows us to assess the size, significance, and direction of the individual effects of each element - an aspect disregarded in previous research. Our empirical analysis of the 2000 Flemish municipal elections shows that a higher number of parties competing in the election lowers turnout. The size inequalities between the parties exert a positive - though insignificant - influence on voter participation. Copyright 2006 Blackwell Publishing Ltd.