Eindhoven University of Technology

About: Eindhoven University of Technology is a education organization based out in Eindhoven, Noord-Brabant, Netherlands. It is known for research contribution in the topics: Catalysis & Control theory. The organization has 22309 authors who have published 52936 publications receiving 1584164 citations. The organization is also known as: Technische Hogeschool Eindhoven & TU/e.

The Performance Effects of Combining Rationality and Intuition in Making Early New Product Idea Evaluation Decisions

Abstract: New product idea evaluation decisions made by individual development team members during their idea generation activities allow for and may also benefit from the use of both rational and intuitive approaches to decision-making. Unfortunately, there is a lack of empirical research on whether at all and, if yes, in which temporal sequence the two approaches should best be combined in making single idea evaluation decisions. To start filling this gap in the innovation and decision-making literatures, this research empirically explores which approach (combination) increases idea evaluation decision-making quality and speed. To this end, an experiment with product development practitioners was conducted, manipulating the use of either only intuition, only rationality, or combining intuition with rationality in both sequences in making a typical idea evaluation decision. The results show that only one combination, starting with intuitively analysing the ideas and then rationally considering the resulting intuition in making the final decision, leads to both the highest quality and speed. This finding has significant implications for theory and practice and provides ample opportunities for further research.

Reducing emergency department waiting times by adjusting work shifts considering patient visits to multiple care providers

Abstract: Reducing Emergency Department (ED) overcrowding in the hope of improving the ED's operational efficiency and health care delivery ranks high on every health care decision maker's wish list. The current study concentrates on developing efficient work shift schedules that make the best use of current resource capacity with the objectives of reducing patient waiting time and leveling resource utilization as much as possible. The study introduces two iterative heuristic algorithms, which combine simulation and optimization models for scheduling the work shifts of the ED resources: physicians, nurses and technicians. The algorithms are distinctive because they account for patients being treated by multiple care providers, possibly over the course of several hours, often with interspersed waiting. In such instances, patient arrival time is not a good indicator of when the various care providers are needed. The algorithms were tested using a detailed simulation based on data from five general hospital EDs. A pat...

Vortex statistics in turbulent rotating convection.

Abstract: The vortices emerging in rotating turbulent Rayleigh-Benard convection in water at Rayleigh number Ra=6.0×108 are investigated using stereoscopic particle image velocimetry and by direct numerical simulation. The so-called Q criterion is used to detect the vortices from velocity fields. This criterion allows distinguishing vorticity- and strain-dominated regions in the flow by decomposing the velocity gradient tensor into symmetric and antisymmetric parts. Vortex densities, mean vortex radii and mean vortex circulations are calculated at two horizontal cross-sections of the cylindrical flow domain and at several rotation rates, described by the Taylor number which takes values between 3.0×108 and 7.7×1010. Separate statistics are calculated for cyclonic and anticyclonic vortices. Vortex densities and mean vortex radii are mostly independent of the Taylor number except very close to the bottom and top plates where more vortices are detected when the Taylor number is raised (rotation increases). The vortex population close to the plate consists mostly of cyclones while further into the bulk of the domain a similar amount of cyclones and anticyclones is found. The cyclonic vortices contain more circulation than the anticyclones. The same vortex analysis of the simulation results at additional vertical positions revealed that the vortices are formed in a boundary layer on the plate with a thickness of approximately two Ekman lengths.