2 QLS Seminars - This week - 2 and 3 July

[Quantitative Life Sciences]

Dear All,

Tomorrow,  Thu. 2 July at 14h00,  Leandro C. Rego (Statistics and 
Applied Math Department, Federal University of Ceara', Brazil) will give 
a seminar titled:

*"Maximin Stability in the Graph Model for Conflict Resolution: Forward 
and Preference Adjustment Approaches "
_
_*Conflicts are inherent to many human interactions and substantial 
costs are associated with unresolved conflicts. In this talk, I will 
give an introduction about the Graph Model for Conflict Resolution 
(GMCR), which has been successfully applied to model and analyze many 
real world strategic conflicts. After recalling the main stability 
concepts used within GMCR, I will focus on the Maximin stability, which 
has been shown to generalize to higher horizons of analysis some classic 
stability notions. I will present the Maximin both in the traditional 
forward approach that determines which conflict scenarios are stable 
given the actions than can be taken by decision makers and their 
preferences, and also in the preference adjustment approach, where a 
linear integer optimization model to determine minimal preference 
adjustment to make a desired scenario a Maximin equilibrium is proposed.


Indico: https://indico.ictp.it/event/11385



On Fr. 3 July at 11h00 Victor Dossetti Romero (Instituto de Ciencias 
Benemerita Universidad Autonoma de Puebla, Mexico) will give a seminar 
titled:

*"Flocking in One-dimensional Systems of Interacting Brownian Particles: 
Synchronous vs Asynchronous Updates"*

We study a one-dimensional system of Brownian particles that interact 
among themselves through local velocity-lignment forces that are 
discrete in time and do not affect the particle speed. The local 
velocity-alignment acts periodically over the system with time period 
t_a and probability P= t_a/t_0, with t_0 being a control parameter. 
Depending on the relation between t_a and t_0, the velocity-alignment 
can affect all of the particles synchronously in time or just a few 
asynchronously. In any case, as the velocity-alignment events become 
more frequent, the system is driven from stationary states close to 
thermal equilibrium, to far-from-equilibrium ones where the system 
exhibits spontaneous symmetry breaking and self-organization. Therefore, 
our results show that self-propulsion is not a necessary ingredient to 
produce the flocking transition even in one-dimensional systems. Above 
the critical point, for the synchronous case, the velocity distribution 
of the particles exhibits periodic oscillations in time with period t_a, 
and their density distribution shows a breathing-like behavior. The 
effects of these phenomena produce a regular spiking activity in the 
order parameter as the system approaches to the thermodynamic limit.



The seminars will take place in the *Common Area, 2nd floor, old SISSA 
building (Via Beirut, 2).*

You are all most welcome to attend!

Best regards,

Erica

Erica Sarnataro
Group Secretary
Quantitative Life Sciences
The Abdus Salam International Centre for Theoretical Physics (ICTP)
Trieste,  Italy
Tel. +39-040-22404623 (NEW PHONE NUMBER)
www.ictp.it/research/qls.aspx
e-mail:qls at ictp.it