Invitation to Systems Biology Seminar Talk
Robustness learning mechanisms for circadian clocks
Dr. Takehito Azuma
Department of Electrical and Electronic Engineering
Utsunomiya University, Utsunomiya, Japan
Time: Tuesday · 26. 9. 2006 · 4 p.m
Place: IST Seminar Room 3.241 · Pfaffenwaldring 9 · Campus Stuttgart-Vaihingen
Our research interests are why and how circadian rhythms have about 24 hours in view of evolution. Our research is theoretical in systems biology based on the systems and control theory. In this paper, one of evolution architectures is proposed for circadian rhythms using adaptive learning systems with error feedbacks. Error feedbacks update some parameters in systems which describe circadian rhythms according to environments such as the sun rise and the sun set. First our proposed evolution architectures show no circadian rhythms because adaptive learning systems have no data. But as time goes on, the output of our proposed evolution architectures show circadian rhythms and finally converge rhythms with the about 24 hours period.
Takehito Azuma received B.S., M.S. and Ph.D. degrees in electrical engineering from Waseda University in 1995, 1997 and 2000 respectively. In 1998 he joined the Faculty of Electrical, Electronics and Computer Engineering at Waseda University as a research associate. From 2000 to 2005, he joined the Faculty of Electrical and Electrinics Engineering at Kanazawa University as a research associate and an assistant professor. From 2006 he has been an associate professor at Utsunomiya University. In 2000 he published a paper in the German journal "Automatisierungstechnik".