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March 17, 2016
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Date:30SundayNovember 2025Lecture
Earthcasting fast-evolving landscapes and high-order sediment transport dynamics
More information Time 11:00 - 12:00Location Stone Administration Building
Zacks HallLecturer Yuval Shmilovitz Organizer Department of Earth and Planetary SciencesAbstract Show full text abstract about Earth's landscapes are shaped by competition between te...» Earth's landscapes are shaped by competition between tectonic plates that push bedrock upward and river networks that remove mass. Transport of countless rock fragments is a fundamental aspect of this action, resonating with many other near-surface processes across the hydrosphere, biosphere, and geosphere. Identifying how efficiently rock fragments are transported away, considering their properties and ecohydrological feedbacks during weather events, has remained a persistent scientific challenge since the dawn of computational geomorphology. With recent advances in terrain remote sensing and analysis techniques, hydroclimate observations/models, and computational methods for describing dynamic topography, a research frontier is emerging, paving the way for a promising new era in the science of surface processes and topographic forms. The seminar first presents a new application of a theory for heterogeneous sediment transport in mountainous gravel-bed rivers. A set of numerical experiments discovered process-form relations that emerge from sediment grains' lithological heterogeneity. Then, the talk will present a first-of-its-kind Earthcasting approach that integrates high-resolution event-scale rainfall forcing into a Holocene-scale landscape evolution research framework. Within that timescale, the importance of the interaction between soil grains and ecohydrological processes in shaping fast-evolving landforms is highlighted. Lastly, paleo-rainfall regimes capable of triggering erosion-deposition cycles and possible future transitions to a unique climate-erosion state by the 21st century will be demonstrated. The findings have the potential to shift paradigms in the interpretation of sediment records and landscape forms. The newly developed methodologies enable unprecedented quantification of surface processes with respect to material properties and climate forcings, which open opportunities toward a transformational understanding of landscape evolution. -
Date:30SundayNovember 2025Lecture
The Clore Center for Biological Physics
More information Time 13:15 - 14:30Title Intramolecular structural heterogeneity in intrinsically disordered proteinsLocation Nella and Leon Benoziyo Physics LibraryLecturer Prof. Beck- Barkai
lunch at 12:45Contact Abstract Show full text abstract about Intrinsically disordered proteins (IDPs) and disor...» Intrinsically disordered proteins (IDPs) and disordered protein regions, which comprise over 40% of the eukaryotic proteome, exhibit complex dynamics, fluctuating between diverse conformational ensembles. Unlike structured proteins, where short-range interactions and long-range contacts dictate singular three-dimensional folding, IDPs lack a single stable structure. To understand their biological function, it is crucial to establish a correlation between the amino acid sequence and the statistical properties of their structural ensemble.In this talk, I will present our recent work on neurofilament proteins, which are essential neuronal-specific cytoskeletal components containing large intrinsically disordered domains. Our study spans multiple length scales—from nanoscopic to macroscopic—aiming to uncover the molecular mechanisms underlying their functional behavior. By leveraging coarse-grained polymer physics models and integrating minimal parameters, we demonstrate that the structural ensemble of neurofilament proteins can be reasonably predicted. However, our findings underscore that specific sequence motifs and the surrounding context are necessary to fully capture the protein’s conformational landscape in solution.These results highlight the power of advanced polymer theories in describing the ensemble behavior of IDPs, offering a promising avenue for modeling their function and dysfunction, particularly in neurodegenerative disease contexts. By bridging the gap between sequence specificity and polymer physics, we aim to establish a more comprehensive framework for predicting IDP behavior and its implications in health and disease. -
Date:01MondayDecember 2025Colloquia
Hydration lubrication: from basics to the clinic
More information Time 11:00 - 12:15Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Jacob Klein Homepage -
Date:01MondayDecember 2025Lecture
Midrasha on Groups Seminar
More information Time 11:15 - 13:00Title Building metrics on groups and the Gleason–Yamabe theorem IILocation The David Lopatie Hall of Graduate Studies
Room C - C חדרLecturer Guy Kapon
WeizmannOrganizer Faculty of Mathematics and Computer ScienceContact Abstract Show full text abstract about I will mostly follow pages 112–123 in Terrence Tao’s book. ...» I will mostly follow pages 112–123 in Terrence Tao’s book. -
Date:01MondayDecember 2025Lecture
Midrasha on Groups Seminar
More information Time 14:15 - 16:00Title Asymptotically commuting measures share the Furstenberg–Poisson boundaryLocation The David Lopatie Hall of Graduate Studies
Room C - C חדרLecturer Aranka Hrušková
WeizmannOrganizer Faculty of Mathematics and Computer ScienceContact Abstract Show full text abstract about Let \theta and \mu be two Borel probability measures on a to...» Let \theta and \mu be two Borel probability measures on a topological group G such that the subsemigroup generated by the support of \theta is contained in the subsemigroup generated by the support of \mu. We show that if the total variation distance of \theta\mu^n and \mu^n\theta, where the multiplication is understood to be convolution, goes to 0 as n tends to infinity, then every bounded \mu-harmonic function on G is also \theta-harmonic. Among other things, this result gives elegant alternative proofs of several known theorems, for example that for any probability measure \nu on G, the centre of G acts trivially on the Poisson boundary of (G,\nu). Joint work with Yair Hartman and Omer Segev. -
Date:02TuesdayDecember 2025Lecture
Peptide and Metabolite Self-Assembly: Physiology, Pathology and Nanotechnology
More information Time 11:15 - 12:15Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Ehud Gazit Organizer Department of Chemical and Structural Biology -
Date:02TuesdayDecember 2025Lecture
Weizmann Ornithology monthly lecture
More information Time 14:10 - 15:30Title The global biomass of birdsLocation Benoziyo
591CLecturer Lior Greenspoon Organizer Department of Plant and Environmental SciencesContact Abstract Show full text abstract about Lior will relate her PhD study on the global biomass of bird...» Lior will relate her PhD study on the global biomass of birds. The thrushes are a passerine bird family, Turdidae, with a worldwide distribution. The family was once much larger before biologists reclassified the former subfamily Saxicolinae, which includes the chats and European robins, as Old World flycatchers. Thrushes are small to medium-sized ground living birds that feed on insects, other invertebrates, and fruit. Some unrelated species around the world have been named after thrushes due to their similarity to birds in this family. -
Date:03WednesdayDecember 2025Lecture
Azrieli Brain and Neuroscience Students Seminarnts Seminar
More information Time 12:00 - 13:00Location Botnar Auditorium -
Date:03WednesdayDecember 2025Lecture
ABC CHATS: Rotem Tidhar -TripleW
More information Time 14:00 - 15:30Title From Bench to ManagementLocation George and Esther Sagan Students' Residence HallLecturer Rotem Tidhar
Rotem will share her personal career journey from PhD studies to leading the R&D branch of a growing company with a global presenceAbstract Show full text abstract about Join our ABC CHATS, Where CEOs share their ABC’s on scientif...» Join our ABC CHATS, Where CEOs share their ABC’s on scientific leadership, breakthroughs and failures throughout their personal stories -
Date:04ThursdayDecember 2025Lecture
Cell Observatory expanding dimensions of discovery: Spatial, Multiplex, Multi-omics
More information Time 09:00 - 10:00Location Max and Lillian Candiotty Building
AuditoriumLecturer Dr. Sefi Addadi Organizer Department of Life Sciences Core Facilities -
Date:04ThursdayDecember 2025Lecture
From Sequence to Patient- Personalized Antisense Oligonucleotides for Ultra-Rare Diseases
More information Time 11:00 - 12:00Location Max and Lillian Candiotty Building
AuditoriumLecturer Nofar Mor, PhD -
Date:04ThursdayDecember 2025Colloquia
Physics Colloquium
More information Time 11:15 - 12:30Title Subradiance in arrays of atoms coupled to photonsLocation Physics Weissman AuditoriumLecturer Dr. Alexander Poddubny Organizer Faculty of PhysicsAbstract Show full text abstract about The study of photon interactions with arrays of atoms is a m...» The study of photon interactions with arrays of atoms is a mature field, going back at least as far as Dicke's discovery of superradiance in 1954. The main idea is that a photon mode can couple to multiple distant atoms simultaneously, and these multiple couplings can interfere either constructively (leading to faster emission, known as superradiance) or destructively (leading to slower emission, referred to as subradiance). However, there is a lot of unexplored and experimentally accessible physics beyond the simple Dicke-type models. This is especially evident for subradiant states with multiple excitations, which explore the exponential degeneracy of the Hilbert space.In this talk, I will summarize our latest results on multiple-excited subradiant states in arrays of atoms coupled to photons propagating in a waveguide. I will discuss the limits for subradiance in a strongly excited system in the presence of interactions. -
Date:04ThursdayDecember 2025Lecture
Vision and AI
More information Time 12:15 - 13:15Title What can deep learning tell us about human face recognition?Location Jacob Ziskind Building
Lecture Hall - Room 1 - אולם הרצאות חדר 1Lecturer Galit Yovel
Tel Aviv UniversityOrganizer Department of Computer Science and Applied MathematicsContact Abstract Show full text abstract about Over the past decade, deep learning algorithms have achieved...» Over the past decade, deep learning algorithms have achieved—and in some cases surpassed—human-level performance in face recognition. This remarkable success raises a fundamental question: to what extent do these artificial systems capture the mechanisms that underlie human face recognition? In this talk, I will explore the convergences and divergences between deep learning models and the human face recognition system. I will first show how deep convolutional neural networks (DCNNs)
reproduce key phenomena observed in human face perception. Yet, despite these similarities, important differences remain in how humans and deep learning algorithms learn and represent faces. To bridge these gaps, we employ models that learn continually and integrate visual and language-based models, to capture both perceptual and conceptual aspects of face recognition. Together, these findings demonstrate how deep learning algorithms can advance our understanding of human face recognition.
BIO:
Galit Yovel is a professor in the School of Psychological Sciences and Sagol School of Neuroscience at Tel Aviv University. She earned her PhD in Psychology from the University of Chicago and completed her Post-Doctoral studies in the Department of Brain and Cognitive Sciences at MIT. In her research she combines methods from experimental psychology, neuroimaging and AI to unravel the neural and cognitive mechanisms of human face recognition. Her work extends beyond faces to examine how the body, voice, motion, and semantic information contribute to person recognition. She was the head of Strauss MRI Center at Tel Aviv University (2015-2017), the head of the School of Psychological Sciences (2017-2021) and the head of the AI and Data Science major for students in life science/social sciences and law (2022-2025). She is the recipient of the Bruno award (2017), and a six-time recipient
of the Tel Aviv University Rector award for excellence in teaching. -
Date:04ThursdayDecember 2025Lecture
Geometric Functional Analysis and Probability Seminar
More information Time 13:30 - 14:30Title Graph theory and scrambling of quantum informationLocation Jacob Ziskind Building
Room 155 - חדר 155Lecturer Uzy Smilansky
WISOrganizer Faculty of Mathematics and Computer ScienceContact -
Date:04ThursdayDecember 2025Lecture
Can one bug do it? - from the gut microbiome to anti-tumor immunity
More information Time 14:00 - 15:00Location Candiotty
AuditoriumLecturer Prof. Ze’ev Ronai Organizer Dwek Institute for Cancer Therapy Research -
Date:04ThursdayDecember 2025Lecture
Can one bug do it? - from the gut microbiome to anti-tumor immunity
More information Time 14:00 - 15:00Location Candiotty
AuditoriumLecturer Prof. Zeev Ronai Organizer Dwek Institute for Cancer Therapy Research -
Date:07SundayDecember 2025Lecture
The Clore Center for Biological Physics
More information Time 13:15 - 14:30Title Collective effects and Curie principle in biological cells: experiments and theoryLocation Nella and Leon Benoziyo Physics LibraryLecturer Dr. Daniel Riveline
LUNCH AT 12:45Contact Abstract Show full text abstract about Cells, tissues and organs can rotate spontaneously in vivo a...» Cells, tissues and organs can rotate spontaneously in vivo and in vitro. These motions are remarkable for their robustness and for their potential functions. However, physical mechanisms coordinating these dynamics are poorly understood. Active matter formalisms are required to understand these out-of-equilibrium phenomena with quantitative comparisons between theory and experiments.I will present two examples of spontaneous rotation with experiments synergized with theory (1, 2). In a first study (1), we report that rings of epithelial cells can undergo spontaneous rotation below a threshold perimeter. We demonstrate that the tug-of-war between cell polarities together with the ring boundaries determine the onset to coherent motion. The principal features of these dynamics are recapitulated with a numerical simulation (Vicsek model). In a second study (2), we show that cell doublets rotate in a 3D matrix and we identify mesoscopic structures leading the movement. Our theoretical framework integrates consistently cell polarity, cell motion, and interface deformation with equations capturing the physics of cortical cell layers. We also report that the Curie principle is verified in these cellular doublets with its symmetry relations between causes and effects. Altogether both examples could set generic rules to quantify and predict generic motion of tissues and organs as well as active synthetic materials.1- S. Lo Vecchio et al. Nature Physics 20:322–331(2024).2- L. Lu et al. Nature Physics 20:1194–1203 (2024). -
Date:09TuesdayDecember 2025Lecture
10x genomics user meeting, December 9th, 2025
More information Time 08:30 - 15:05Location Ebner AuditoriumOrganizer Department of Life Sciences Core FacilitiesContact Abstract Show full text abstract about Dear colleagues,Danyel Biotech and 10X Genomics are delighte...» Dear colleagues,Danyel Biotech and 10X Genomics are delighted to invite you to the Israeli 10X Genomics User Group Meeting 2025, which will take place on December 9th, 2025 at Ebner Auditorium.Join us for a series of user-led talks showcasing groundbreaking work in single-cell and spatial transcriptomics.Special “end of the year discount” will be offered to the event participants.Agenda and Registration link on the attached banner.Looking forward to seeing you there,Hadas Keren-Shaul,Genomics unitLSCF-INCPM -
Date:09TuesdayDecember 2025Colloquia
Mathematics colloquium
More information Time 11:00 - 13:00Title Remarks on convex domains of maximal symplectic sizeLocation Ziskind building
Room 1Abstract Show full text abstract about Symplectic capacities are invariants that quantify the size ...» Symplectic capacities are invariants that quantify the size of symplectic manifolds using themes from Hamiltonian dynamics and symplectic topology. While convexity is not preserved under symplectomorphisms, convex domains nevertheless exhibit notable behavior with respect to these capacities. Viterbo's volume-capacity conjecture (2000) suggests that, among convex domains of equal volume, the ball has maximal capacity. By capturing the interplay between convex and symplectic geometries, this simply formulated conjecture has become highly influential in the study of symplectic capacities, prompting extensive research. One result in this direction shows that smooth domains which are symplectic Zoll—a dynamical property—are local maximizers. In this talk, I will present a counterexample to Viterbo’s conjecture developed jointly with Yaron Ostrover and discuss follow-up questions. One implication is that a capacity maximizer cannot be smooth and strictly convex, raising the question of characterizing nonsmooth dynamical properties that detect local maximizers. I will propose a dynamical extension of the Zoll property to nonsmooth domains and discuss its equivalence with certain topological properties. -
Date:09TuesdayDecember 2025Lecture
Brain-wide dynamics underlying different cognitive functions in health and disease
More information Time 12:30 - 13:30Location Schmidt Lecture HallLecturer Dr. Ariel Gilad Organizer Department of Brain SciencesContact Abstract Show full text abstract about Our lab studies brain-wide dynamics underlying cognition usi...» Our lab studies brain-wide dynamics underlying cognition using the mouse model. We train mice on many different behavioral tasks, each focusing on a different cognitive function such as sensory integration, working memory, learning, social interactions and more. As mice perform each task, we implement brain-wide imaging techniques to record neuronal population activity from as many brain areas as possible. Two mesoscale techniques used in the lab are wide-field imaging of the whole dorsal cortex and multi-fiber photometry to record from dozens of cortical and subcortical areas, also during freely moving behavior. I will show unpublished results from mice trained on different cognitive tasks and highlight critical subnetworks involved in each cognitive function. I will further show preliminary results from freely moving behaviors in mouse models for autism, schizophrenia and Alzheimer's. Our long-term goal is to obtain a brain-wide cognitive map that will aid in understanding cognition as a whole in both the healthy and the disordered brain.