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דצמבר 15, 2014
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Date:23שלישידצמבר 2014הרצאה
Classification of spherical quadrilaterals
More information שעה 13:00 - 13:00מרצה A. Eremenko and A. Gabrielov
Purdue Universityמארגן הפקולטה למתמטיקה ומדעי המחשבצרו קשר -
Date:23שלישידצמבר 2014הרצאה
"Conformational changes in GPCR signalling"
More information שעה 14:00 - 15:00מיקום בניין הלן ומילטון קימלמןמרצה Dr. Dmitry Veprintsev
Laboratory of Biomolecular Research Paul Scherrer Institut Switzerlandמארגן המחלקה לביולוגיה מבנית וכימיתצרו קשר -
Date:24רביעידצמבר 2014הרצאה
To be announced
More information שעה 10:00 - 11:00מיקום אולם הרצאות ע"ש גרהרד שמידטמארגן המחלקה למדעים ביומולקולרייםצרו קשר -
Date:24רביעידצמבר 2014הרצאה
Forum on Mathematical Principles in Biology
More information שעה 10:00 - 11:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Prof. Ariel Amir
Dept of Applied Mathematics and Applied Physics, Harvard Universityמארגן המחלקה לביולוגיה מולקולרית של התאצרו קשר -
Date:24רביעידצמבר 2014הרצאה
X-ray transients: hypo- or hyper-luminous?
More information שעה 11:15 - 12:00מיקום בניין לפיזיקה על-שם נלה וליאון בנוזיומרצה Jean-Pierre Lasota מארגן מרכז לאסטרופיסיקה עש נלה וליאון בנוזיוצרו קשר תקציר Show full text abstract about The thermal-viscous disc instability model gives a plausible...» The thermal-viscous disc instability model gives a plausible explanation of outbursts of soft X-ray transient systems if self-irradiation of the disc is included. After a short introduction of the model I will show that there is a simple relation between the peak luminosity (at the start of an outburst) and the decay timescale. This relation can be used to place constraints on systems assumed to undergo disc instabilities. The observable X-ray populations of elliptical galaxies must consist of long-lived transients, as deduced on different grounds by Piro & Bildsten (2001). The strongly-varying X-ray source HLX-1 in the galaxy ESO 243-49 can be modelled as a disc instability of a highly super-Eddington stellar-mass binary similar to SS433. A fit to the disc instability picture is not possible for an intermediate-mass black hole model for HLX-1. Other, recently identified, super-Eddington ULXs might be subject to disk instability. -
Date:24רביעידצמבר 2014הרצאה
Scalable algorithms for translating natural language to logical form
More information שעה 11:15 - 11:15מיקום בניין יעקב זיסקינדמרצה Jonathan Berant
Stanford Universityמארגן הפקולטה למתמטיקה ומדעי המחשבצרו קשר -
Date:24רביעידצמבר 2014הרצאה
Genetic and Epigenetic Determinants of Chronic Lymphocytic Leukemia Evolution
More information שעה 14:00 - 14:00מיקום בניין ע"ש מקס ולילאן קנדיוטימרצה Dr.Dan-Avi Landau
Dana Farber Cancer Institute & Broad Institute of Harvard and MIT, U.S.A.מארגן המחלקה לאימונולוגיה ורגנרציה ביולוגיתצרו קשר -
Date:25חמישידצמבר 2014הרצאה
Magnetic Resonance Seminar
More information שעה 09:30 - 09:30כותרת Quantitative analysis of advanced MRI methods for classification and follow up of patients with brain lesionsמיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Dr. Dafna Ben Bashat
Dept. of Radiology, Sackler Faculty of Medicine Functional Brain Center, Tel Aviv Sourasky Medical Centerמארגן המחלקה לפיזיקה כימית וביולוגיתצרו קשר תקציר Show full text abstract about In recent years, technical and methodological advances conce...» In recent years, technical and methodological advances concerning medical applications of magnetic resonance (MR) have allowed the acquisition of multiple types of data, beyond pure anatomy, in a single examination, including diffusion imaging, MR spectroscopy, perfusion, permeability imaging and functional MRI. Integrating the various MR methods along with multiparametric analysis, can improve patient evaluation, quantitative tissue classification and characterization, as well as therapy response assessment.
Accurate measurements of brain structures and lesion volumes can be performed using manual or semi-manual methods. Analysis of multiparametric data, including advanced imaging methods, requires the use of advanced analysis tools. Multiparametric analysis of MRI data includes supervised and un-supervised methods, and provides information that often requires validation.
In this talk, I will present state of the art methods used in MRI data acquisition and analysis for quantitative assessment and follow-up of brain lesions; give a brief description of the main methods used for advanced and multi-parametric image analysis; highlight controversial issues regarding the use and analysis of these methods and their potential use in clinical practice.
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Date:25חמישידצמבר 2014הרצאה
Academic recruitments: Considerations and best practices addressing unconscious bias
More information שעה 10:00 - 10:00מיקום בניין גולדוורםמרצה Dr. Yael Levitte צרו קשר -
Date:25חמישידצמבר 2014הרצאה
Regularity theory for random elliptic equations
More information שעה 11:05 - 11:05מיקום בניין יעקב זיסקינדמרצה Scott Armstrong
University of Paris-Dauphineמארגן הפקולטה למתמטיקה ומדעי המחשבצרו קשר -
Date:25חמישידצמבר 2014סימפוזיונים
Supernova: not what you thought - The majority of type
More information שעה 11:15 - 12:30מיקום בניין הפיזיקה ע"ש עדנה וק.ב. וייסמןמרצה Prof. Doron Kushnir
IASמארגן הפקולטה לפיזיקהצרו קשר תקציר Show full text abstract about Type Ia: I will show that the majority of type Ia SNe may be...» Type Ia: I will show that the majority of type Ia SNe may be the result of direct collisions of
typical field CO-WDs in triple systems. The supporting evidences are: 1. the rate of such
collisions may be comparable to the SNe Ia rate, 2. in this case the nuclear detonation is due to a well understood shock ignition, devoid of commonly introduced free parameters such as the deflagration velocity or transition to detonation criteria, 3. the observed range of Ni56 among
different explosions, including the tendency for faint SNe in elliptical galaxies and bright SNe in spirals, is explained as the result of the CO WDs mass range, 4. a unique feature of this model (doubly-peaked line profiles in nebular-phase spectra) has been found to be common among type Ia SNe. Core-collapse: I will demonstrate that ~10 seconds after core-collapse of a massive star, a thermonuclear explosion of the outer shells is possible for some initial density and composition profiles (assuming the neutrinos failed to explode the star). The explosion may lead to a successful supernova, as first suggested by Burbidge, Burbidge, Fowler and Hoyle (1957).
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Date:25חמישידצמבר 2014הרצאה
RingIt: Ring-ordering Casual Photos of a Dynamic Event
More information שעה 12:00 - 12:00מיקום בניין יעקב זיסקינדמרצה Hadar Elor
Tel Aviv Universityמארגן הפקולטה למתמטיקה ומדעי המחשבצרו קשר -
Date:25חמישידצמבר 2014הרצאה
Biological and artificial curiosity:models, behaviors and robots
More information שעה 12:30 - 12:30מיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Dr. Goren Gordon
Personal Robots Group, Media Lab, MITמארגן המחלקה למדעי המוחצרו קשר תקציר Show full text abstract about Abstract: Curiosity is one of the major human drives. Can we...» Abstract: Curiosity is one of the major human drives. Can we model curiosity in biological agents? Can we implement these models in artificial systems? What happens when a curious child meets a curious robot? In this talk I present recent work on the study of curiosity. First, studies of curiosity-driven behaviors in humans and rodents are presented, where we show that biological agents attempt to manage their novelty in a structured manner. A model that captures this structure is presented, wherein emergent exploration behaviors are balanced with novelty-based withdrawal-like actions. The model, which has only a few free parameters, reproduce, explain and predict many observed behaviors in mice and rats. A similar model is implemented in curious robots that learn about their own body and people interacting with them, resulting in emergent behaviors that have similar characteristics to infants’ behaviors. Finally, results from a recent study show that children’s curiosity can increase after interacting with a curious social robot. Future work on studies of infants’, children’s and adults’ curiosity-driven behavior as well as the development of autonomous curious robots, concludes the talk. -
Date:28ראשוןדצמבר 2014הרצאה
Magnetic Resonance and Ph.D student seminar
More information שעה 10:00 - 10:00כותרת The Vasculature of Pregnancyמיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Reut Avni
Under the supervision of Prof Michal Neeman Department of Biological Regulation Weizmann Institute of Scienceמארגן המחלקה לפיזיקה כימית וביולוגיתצרו קשר -
Date:28ראשוןדצמבר 2014הרצאה
The Modern and LGM hydrological cycles of the Eastern Mediterranean and the Levant from a water isotope perspective
More information שעה 11:00 - 11:00מיקום בניין משפחת זוסמןמרצה Yoni Goldsmith
Lamont-Doherty Earth Observatory Columbia University, Earth Instituteמארגן המחלקה למדעי כדור הארץ וכוכבי הלכתצרו קשר תקציר Show full text abstract about Long-term averages of the isotopic composition of precipitat...» Long-term averages of the isotopic composition of precipitation from 15 sites in Israel and reanalyzed vapor data from the Mediterranean are used to assess the full modern hydrological cycle of sea surface water–vapor–distillation–precipitation–evaporation in the E. Mediterranean and the Levant. The results combined with modeling efforts show that once the source effect is accounted for, the long-term isotopic composition of precipitation in Israel is governed primarily by distillation that is a function of the sea-land temperature gradient. These processes govern the amount, altitude and the distance from the ocean effects.
Based on our understanding of the modern processes, we modeled the distillation as a function of relative humidity during the LGM using d18O values from Soreq Cave stalagmites and Mediterranean foraminifera. Our model suggests a possible reconciliation of the conundrum between the Lake Lisan high-stand during the LGM and the similar offset between the d18O from Soreq Cave stalagmites and Mediterranean foraminifera in modern and LGM times.
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Date:28ראשוןדצמבר 2014הרצאה
Mechanics and dynamics of lipid bilayer membranes: extracting bending moduli from molecular dynamics simulations and modeling transport in the membrane plane
More information שעה 11:00 - 11:00מיקום בניין פרלמן למדעי הכימיהמרצה Prof. Frank Brown
Department of Chemistry and Biochemistry , University of California at Santa Barbaraמארגן המחלקה לכימיה מולקולרית ולמדע חומריםצרו קשר -
Date:28ראשוןדצמבר 2014הרצאה
Tomato trichome specialized metabolism: evolutionary diversity and in vitro reconstruction
More information שעה 11:15 - 11:15מיקום בניין אולמן למדעי החייםמרצה Prof. Prof. Robert L. (Rob) Last
Department of Biochemistry and Molecular Biology, Michigan State University, USAמארגן המחלקה למדעי הצמח והסביבהצרו קשר -
Date:28ראשוןדצמבר 2014הרצאה
A paradigm shift in understanding Gamma-ray bursts
More information שעה 12:00 - 13:30מיקום בניין לפיזיקה על-שם נלה וליאון בנוזיומרצה Asaf Pe'er מארגן מרכז לאסטרופיסיקה עש נלה וליאון בנוזיוצרו קשר תקציר Show full text abstract about Since the launch of Fermi in 2008, a prime focus had been gi...» Since the launch of Fermi in 2008, a prime focus had been given to
understanding the physical origin of the prompt emission from
gamma-ray bursts (GRBs), which holds the key to understanding of their
nature. While the problem is still far from being solved, in recent
years we are witnessing a "paradigm shift", as the existence of a
thermal component (on top the non-thermal emission) becomes evident.
I will describe some latest results and the recent theoretical
breakthroughs in understanding how the naively expected "Planck"
spectrum can be broadened and resemble the observed spectra. I will
discuss some novel effects and theoretical ideas relevant for the
study of many astronomical objects. As a few examples, I will show how
emission from the photosphere can be observed to have high degree of
polarization; how it can be used to infer the jet magnetization; and
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Date:28ראשוןדצמבר 2014הרצאה
To be announced
More information שעה 13:00 - 13:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Dr. Tslil Ast
Maya Schuldiner's group, Dept. of Molecular Genetics,WISמארגן המחלקה לגנטיקה מולקולריתצרו קשר -
Date:29שנידצמבר 2014הרצאה
Auto-immune disease, viral infection, chaos and the "butterfly effect"
More information שעה 11:30 - 11:30מיקום בניין וולפסון למחקר ביולוגימרצה Prof. David Dreyfus
Associate Clinical Professor, Pediatrics and Allergy/Clinical Immunology, Yale School of Medicine, New Haven CTמארגן המחלקה לאימונולוגיה מערכתיתצרו קשר