PhBiMaIn

Intermittent behavior across scales in biology

Datum
30.01.2019 
Zeit
11:00 Uhr - 12:00 Uhr 
Sprecher
Fernando Peruani 
Institut
Universität Nizza Sophia-Antipolis, Frankreich 
Teil der Serie
TUD ZIH Kolloquium 
Sprache
en 
Hauptthema
Physik: Theoretische Physik
Subthemen
Biologie: Ökologie und Epidemiologie, Mikrobiologie, Zoologie
Mathematik: Stochastik
Informatik: Bioinformatik
Zusammenfassung

Intermittent behavior is observed in biological systems at all scales, from bacterial systems to sheep herds. First, I will discuss how Escherichia coli explores surfaces by alternating stop and moving phases. Specifically, I will show that a stochastic three behavioral state model is consistent with the empirical data. The model reveals that the stop frequency of bacteria is tuned at the optimal value that maximizes the diffusion coefficient. These results provide a new perspective on how evolution may have reshaped bacterial motility apparatus. Intermittent motion is also observed in sheep, where again a stochastic three behavioral state model provides a quantitative understanding of the empirical data. However, in sheep, individual transition rates depend on the behavioral state of other individuals and collective behaviors emerge. Specifically, I will show that small sheep herds display highly synchronized intermittent collective motion, with the herd behaving as a self-excitable system.

 

Letzte Aktualisierung: 23.01.2019 18:11.

Vortragsort 

TUD Informatik - APB (APB 1096) 
Nöthnitzer Straße 46
01069 Dresden
Homepage
https://navigator.tu-dresden.de/etplan/apb/00 

Veranstalter 

Center for Information Services and High Performance Computing (TUD ZIH)
Zellescher Weg 12-14
01069 Dresden
Telefon
+49 351 463-35450 
Fax
+49 351 463-37773 
E-Mail
Center for Information Services and High Performance Computing (TUD ZIH) 
Homepage
http://tu-dresden.de/zih 
Scannen Sie diesen Code mit ihrem Smartphone und erhalten Sie diese Veranstaltung direkt in ihren Kalender. Vergrößern Sie das Bild durch Klicken auf den QR-Code, sollten Sie Probleme beim Scannen haben.