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Audenaert A.,University of Antwerp | De Cleyn S.,University of Antwerp | De Boeck L.,Center for Informatics | De Boeck L.,Catholic University of Leuven
WSEAS Transactions on Environment and Development | Year: 2014

Given the large energy consumption of energy heating for residential and commercial use in the world, optimising heating systems makes sense, both from an ecologic and an economic point of view. Therefore, this study evaluates five different space heating systems through a case study on a new housing project. The assessment comprises both economic factors (payback period as compared to a reference heating system) and ecologic (E-levels, K-value and CO2 emissions) under different energy price scenarios. The results clearly indicate that large differences occur, mainly driven by the yearly energy consumption of the systems. The more traditionally used systems with condensing heating systems with radiators or classical electric heating systems tend to perform worse than more recent systems with underfloor heating and/or heat pumps. These results are true for all scenarios with regard to the evolution of energy prices and are valid for both the ecologic and economic aspects.


Santos-Pereira C.,Center for Research in Health Technologies and Information Systems | Santos-Pereira C.,University of Porto | Antunes L.,University of Porto | Cruz-Correia R.,Center for Research in Health Technologies and Information Systems | And 4 more authors.
HEALTHINF 2012 - Proceedings of the International Conference on Health Informatics | Year: 2012

American and European Legislation for protection of medical data agree that the patient has the right to play a pivotal role in the decisions regarding the content and distribution of her/his medical records. The Role Based Access Control (RBAC) model is the most commonly used authorization model in healthcare. The first goal of this work is to review if existing models and standards provide for patients accessing their medical records and customizing access control rules, the second goal is to define and propose an authorization model based on RBAC to be used and customized by the patient. A literature review was performed and encompassed 22 articles and standards from which 12 were included for analysis. Results show that existing standards define guidelines for these issues but they are too generic to be directly applied to real healthcare settings. The proposed authorization model combines characteristics of RBAC, ISO/TS 13606-4, temporal constraints and break the glass. With this model we hope to start bridging the gap between legislation and what really happens in practice in terms of patients controlling and being actively involved in their healthcare. Future work includes the implementation and evaluation of the proposed model in a healthcare setting.


Audenaert A.,Artesis University College of Antwerp | Audenaert A.,University of Antwerp | De Boeck L.,Center for Informatics | De Boeck L.,Catholic University of Leuven | And 2 more authors.
Energy | Year: 2012

Improving energy performance of buildings has become a key goal in managing energy demand. In this context, Europe produced the Energy Performance of Buildings Directive (EPBD). Flanders (Belgium) converted this directive into the 'Energy Performance and Interior Climate' (EPB). Taking into account this EPB standard, this study will undertake a cost analysis of different heating systems (condensing gas boiler, non-condensing gas boiler, oil boiler, and heat pump) and ventilation systems (with or without heat exchanger) and investigate their influence on the E-level. The analysis is performed for three representative types of dwellings in Flanders: a terraced, semi-detached and detached dwelling. The analysis clearly indicates that a condensing gas boiler in combination with the heat exchanger is most advantageous: it is the cheapest heating system and generates the lowest E-level. This makes the condensing gas boiler the best choice for all dwelling types. © 2012 Elsevier Ltd.


Spasovski G.,University of Macedonia | Vanholder R.,Ghent University | Allolio B.,University of Wurzburg | Annane D.,University of Versailles | And 14 more authors.
Intensive Care Medicine | Year: 2014

Hyponatraemia, defined as a serum sodium concentration <135 mmol/L, is the most common disorder of body fluid and electrolyte balance encountered in clinical practice. Hyponatraemia is present in 15-20 % of emergency admissions to hospital and occurs in up to 20 % of critically ill patients. Symptomatology may vary from subtle to severe or even life threatening. Despite this, the management of patients remains problematic. Against this background, the European Society of Intensive Care Medicine, the European Society of Endocrinology and the European Renal Association-European Dialysis and Transplant Association, represented by European Renal Best Practice have developed a Clinical Practice Guideline on the diagnostic approach and treatment of hyponatraemia as a joint venture of three societies representing specialists with a natural interest in hyponatraemia. © 2014 Springer-Verlag Berlin Heidelberg and ESICM.


Van Den Bergh J.,Center for Informatics | De Bruecker P.,Catholic University of Leuven | Belien J.,Center for Informatics | De Boeck L.,Center for Informatics | Demeulemeester E.,Catholic University of Leuven
Expert Systems with Applications | Year: 2013

Personnel scheduling problems need to cope with personnel preferences, coverage constraints, legal restrictions, and many other constraints. We present a three-stage methodology that can be used to select personnel rosters. In the first stage we generate multiple personnel rosters with a mathematical programming model. In the second stage, the performance of the rosters regarding a number of service criteria is evaluated through discrete event simulation. In the third stage, a ranking is made using data envelopment analysis. The methodology is tested on a personnel scheduling problem for aircraft line maintenance. © 2012 Elsevier B.V. All rights reserved.

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