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General Mathematics Colloquium

This colloquium takes place every other Wednesday afternoon, 16:00-17:00, in room S-623 (in September and October) or in S-655 (in November and December). For more information, please contact one of the organizers Joost Hulshof and Rob de Jeu.

A database of earlier years' talks can be found here.

Upcoming talks:


Wed 22 Februari 2017: Jens Rademacher (Bremen), Room P-647, 16:00-17:00  

Title: Nonlinear waves: gems in evolution equations

Abstract: While the overall dynamics of an evolution equation can be complicated and even inaccessible to an analysis, there are often subsystems that allow for more. A prominent case are nonlinear waves in parabolic partial differential equations with an extended spatial direction. The simplest such solutions have constant shape up to translation. Examples are solitons, excitation waves and periodic patterns. The identification of such objects is not only much easier than the task to understand the dynamics of the overall problem. These nonlinear waves often form building blocks for more complex behaviour, and, last but not least, often shape the phenomena that are of most interest in applications. In this talk some prominent examples will be present, combined with a brief introduction to analytic tools for existence and stability analysis.


Wed 08 Maart 2017: Daan Crommelin (CWI en UvA), Room P-647, 16:00-17:00 


Wed 22 Maart 2017: Bart de Smit (RUL), Room P-647, 16:00-17:00   


Wed 05 April 2017: Sandjai Bhulai (VU), Room P-647, 16:00-17:00 


Wed 19 April 2017: Elenna Dugundji (CWI), Room P-647, 16:00-17:00   


Wed 03 Mei 2017: TBA, Room P-647, 16:00-17:00


Wed 17 Mei 2017: TBA, Room P-647, 16:00-17:00


Wed 31 Mei 2017: TBA, Room C-624, 16:00-17:00


Wed 14 Juni 2017: TBA, Room P-647, 16:00-17:00                                                                                    

Previous talks in 2017:


Wed 08 Februari 2017: Richard J. Boucherie (Twente), Room P-647, 16:00-17:00

Title: Operations research solutions to improve the quality of healthcare

Abstract: Healthcare expenditures are increasing in many countries. Delivering adequate quality of healthcare requires efficient utilization of resources. Operations Research allows us to maintain or increase the current quality of healthcare for a growing number of patients without increasing the required work force. In this talk, I will describe a series of mathematical results obtained in the Center for Healthcare Operations Improvement and Research of the University of Twente, and I will indicate how these results were implemented in Dutch hospitals.
Efficient planning of operating theatres will reduce the wasted hours of staff, balancing the number of patients in wards will reduce peaks and therefore increases the efficiency of nursing care, efficient rostering of staff allows for more work to be done by the same number of people. While employing operations research techniques seems to be dedicated to improving efficiency, at the same time improved efficiency leads to increased job satisfaction as experienced workload is often dominated by those moments at which the work pressure is very high, and it also improves patient safety since errors due to peak work load will be avoided.


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