IPM Calendar 
Saturday 25 January 2020   Today  
Events for day: Wednesday 08 January 2020    
           11:00 - 13:00     Theoretical Neuroscience Journal Club
Review Session: Fast Global Oscillations in Networks of Integrate-and-Fire Neurons with Low Firing Rates

School
COGNITIVE SCIENCES

Venue:
School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM),
Opposite the ARAJ, Artesh Highway, Tehran, Iran

Abstract:


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           11:00 - 12:30     Geometry and Topology Weekly Seminar
Statistical Stability for Singular Hyperbolic Attractors

School
MATHEMATICS

A common agreement on the definition of chaos is the sensitive dependence on initial conditions. That means independent of how close two initial conditions are, by letting the system to proceed for a while, the new resulting states of the system are significantly different. In other words, a small error at a starting point will cause a huge difference in the outcome of the system. Since measuring a starting point can not be done accurately, the orbit of states is quite unpredictable. But statistically there is a hope to make a prediction by measuring an observable along orbits of the system. Despite of the alteration of the observable along a ...

           13:30 - 15:00     Weekly Seminar
ON THE RELIABILITY OF PHOTOMETRIC AND SPECTROSCOPIC TRACERS OF HALO RELAXATION

School
ASTRONOMY

Characterizing the relaxation state of galaxy systems is a necessary step for probing the role of environment and halo dynamics in the evolution of galaxies. In this presentation, we will provide an assessment of the reliability of both the photometric and spectroscopic probes. We quantify the correlations between the halo relaxation or the dynamical age, which is defined based on the halo mass assembly in the cosmological simulations, with two spectroscopic indicators, namely the Anderson Darling statistic of the galaxy velocity distribution, A2, and the velocity-segregation, ?V. We also talk about the correlation of the halo relaxation with ...

           14:00 - 16:00     Seminar
Neurological correlates of the Persian sound system: some case studies

School
COGNITIVE SCIENCES

Venue:
School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM),
Opposite the ARAJ, Artesh Highway, Tehran, Iran on map




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           14:00 - 15:00     Weekly Seminar
Nanostructures and Neurons; Potential Applications

School
NANO SCIENCES

Nanostructures and Neurons; Potential Applications

Abstract:

Neurons as fundamental units of nervous system are the basic carriers of electric impulses all through the body. In view of the fundamental study on the nervous system and also practical applications in different neurological disorders, an interface is required to convert the signals between the in-vivo and out of body world. Various structures with different strategies have been applied as the potential interfaces, however nanostructures seems to be from potential candidates in this regards. The design, fabrication, and the performance monitoring ...

           15:00 - 16:00     Weekly Seminar
Great Ideas and Technological Breakthroughs in Particle Accelerators and Light Sources
Early Milestones to Novel Techniques

School
PARTICLES AND ACCELERATORS

Abstract: The invention of particle accelerators in the early decades of 20th century opened up new ways of discovery to the world. Over almost a century, many bright ideas ranging from electrostatic accelerators, electromagnetic resonant and non-resonant accelerators to the very novel plasma and dielectric accelerators have generated paradigms for the particle acceleration. Having enormous applications in industry, medicine and science especially as light sources, accelerators are the hallmarks of the high-tech societies. In this lecture, some interesting ideas from early milestones to the novel techniques in accelerators as well as light so ...

           16:00 - 17:00     Mathematics Colloquium
A Cryptographic Approach to Robust Learning

School
MATHEMATICS

Devising classification algorithms that are robust to worst-case perturbations has emerged as a challenging problem in theoretical machine learning. In this work, we study whether there is any learning task for which it is possible to design classifiers that are only robust against polynomial-time adversaries; just like how it is done cryptography. Indeed, numerous cryptographic tasks (e.g. encryption of long messages) are only secure against computationally bounded adversaries. We show that computational limitation of attackers can indeed be useful in robust learning by demonstrating a classifier for a learning task in which computational ...

           16:00 - 17:00     Monthly Colloquium
Periodic Mesoporous Organosilica with Ionic Liquid type Framework (PMO-IL): Innovative Functional Materials for High Performance Immobilized Catalyst Systems

School
NANO SCIENCES

Periodic Mesoporous Organosilica with Ionic Liquid type Framework (PMO-IL): Innovative Functional Materials for High Performance Immobilized Catalyst Systems

Abstract:

The last years of 20th century have witnessed with two dramatic developments in the field of chemistry and material chemistry. In one hand ionic liquids (ILs) were introduced and found widespread application as environmentally non-volatile solvents in variety of area from catalysis to separation science. On the other hand, a new class of hybrid organic-inorganic materials called periodic mesoporous organosilicas (PMOs) built from bridge organ ...