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Goethals P.,International University College Leuven | Chaobal H.,Anesthetech Inc. | Reynaerts D.,Catholic University of Leuven | Schaner D.,Anesthetech Inc.
Journal of Clinical Monitoring and Computing | Year: 2014

We present a new device for verifying endotracheal tube (ETT) position that uses specialized sensors intended to distinguish anatomical features of the trachea and esophagus. This device has the potential to increase the safety of resuscitation, surgery, and mechanical ventilation and decrease the morbidity, mortality, and health care costs associated with esophageal intubation and unintended extubation by potentially improving the process and maintenance of endotracheal intubation. The device consists of a tactile sensor connected to the airway occlusion cuff of an ETT. It is intended to detect the presence or absence of tracheal rings immediately upon inflation of the airway occlusion cuff. The initial study detailed here verifies that a prototype device can detect contours similar to tracheal rings in a tracheal model. © 2013 Springer Science+Business Media.

Duflou J.R.,Catholic University of Leuven | Kellens K.,Catholic University of Leuven | Renaldi,Catholic University of Leuven | Guo Y.,Catholic University of Leuven | And 2 more authors.
CIRP Annals - Manufacturing Technology | Year: 2012

High variation can be observed in energy requirement values reported for unit processes as applied in discrete manufacturing. Different methods for determining such values have been suggested, ranging from theoretic energy determination till statistically determined time averaged values based on experimental process measurements. In this paper the theoretic process energy method is compared to results as obtained from two methods suggested for systematic determination of Life Cycle Inventory (LCI) database entries for unit processes. Examples from different process categories are presented to illustrate the discrepancies observed between the approaches and to illustrate the error range linked to the method selection. © 2012 CIRP.

De Schutter B.,International University College Leuven
Games and Culture | Year: 2011

This study aimed to explore the use of digital games among older adults and provide a set of "benchmark data" with respect to the uses and gratifications of these players. To find out who these older players of digital games are, what games they prefer, and what playing motives they have, an exploratory survey was administered among 124 individuals aged between 45 and 85 years old. The results of this survey confirm that the majority of the older digital game audience exists of solitary players with a particular fondness for casual PC games. The most popular playing motive among the respondents was challenge, while social interaction proved to be the most important predictor for the time that respondents invested in playing digital games. © The Author(s) 2011.

Kellens K.,Catholic University of Leuven | Dewulf W.,International University College Leuven | Duflou J.R.,Catholic University of Leuven
AIP Conference Proceedings | Year: 2011

This paper presents the results of a data collection effort allowing to assess the overall environmental impact of the air bending process using the CO2PE!-Methodology. First the different modes of the air bending process are investigated including both productive and non-productive modes. In particular consumption of electric power is recorded for the different modes. Subsequently time studies allow determining the importance of productive and nonproductive modes of the involved process. The study demonstrates that the influence of standby losses can be substantial. In addition to life cycle analysis in depth process analysis also provides insight in achievable environmental impact reducing measures towards machine tool builders and eco-design recommendations for product developers. The energy consumption of three different machine tool architectures are analysed and compared within this paper. © 2011 American Institute of Physics.

Dewulf W.,Wichita State University | Overcash M.,Wichita State University | Hauschild M.Z.,Technical University of Denmark | Duflou J.R.,International University College Leuven
International Journal of Life Cycle Assessment | Year: 2012

Purpose This report presents two case studies, one for both the screening approach and the in-depth approach, demonstrating the application of the life cycle assessment-oriented methodology for systematic inventory analysis of the machine tool use phase of manufacturing unit processes, which has been developed in the framework of the CO2PE! collaborative research programme (CO2PE! 2011) and is described in part 1 of this paper (Kellens et al. 2011). Screening approach The screening approach, which provides a first insight into the unit process and results in a set of approximate LCI data, relies on representative industrial data and engineering calculations for energy use and material loss. This approach is illustrated by means of a case study of a drilling process. In-depth approach The in-depth approach, which leads to more accurate LCI data as well as the identification of potential for environmental improvements of the manufac- turing unit processes, is subdivided into four modules, including a time study, a power consumption study, a consumables study and an emissions study, in which all relevant process in- and outputs are measured and analysed in detail. The procedure of this approach, together with the proposed CO2PE! template, is illustrated by means of a case study of a laser cutting process. Results The CO2PE! methodology aims to provide highquality LCI data for the machine tool use phase of manufacturing unit processes, to be used in life cycle inventory databases and libraries, as well as to identify potential for environmental improvement based on the indepth analysis of individual manufacturing unit processes. Two case studies illustrate the applicability of the methodology. © 2011 Springer-Verlag.

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