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Date:30ThursdayMay 2024Lecture
Vision and AI
More information Time 12:15 - 13:15Title TBALocation Jacob Ziskind Building
Lecture Hall - Room 1Lecturer Hadas Orgad
TechnionOrganizer Department of Computer Science and Applied Mathematics
SeminarContact Abstract Show full text abstract about TBA ...» TBA
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Date:03MondayJune 2024Colloquia
Arrays of noisy, coupled circadian clocks in a multicellular cyanobacterial organism; experiment and stochastic model
More information Time 11:00 - 12:15Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Joel Stavans
Department of Physics of Complex Systems Faculty of Physics, WISOrganizer Department of Chemical and Biological PhysicsHomepage Contact Abstract Show full text abstract about Circadian clocks in unicellular phototrophic organisms are k...» Circadian clocks in unicellular phototrophic organisms are known to display remarkable reliability. In contrast, not much is known about how circadian clocks perform in a multicellular setting. Are clocks in multicellular cyanobacteria coupled and synchronized with one another? Are clocks entrained only by external cues? What is the spatial extent of synchronization? What is the role of cell-cell variations in copy numbers of molecules comprising the core clock (demographic noise) in setting the temporal pattern and its robustness? To tackle quantitatively these and other questions, we studied the dynamics of a circadian clock-controlled gene in Anabaena sp. PCC 7120, a multicellular cyanobacterium in which cells are arranged one after the other and coupled by protein channels, in a one-dimensional structure. Our real-time, single-cell level measurements showed significant synchronization and spatial coherence along filaments, and clock coupling mediated by cell-cell communication. Furthermore, we found significant variability in expression between different cells along filaments. A stochastic one-dimensional toy model of coupled clocks and their phosphorylation states shows that demographic noise can seed stochastic oscillations outside the region where deterministic limit cycles with circadian periods occur. The model reproduces the observed spatio-temporal coherence along filaments and provides a robust description of coupled circadian clocks in a multicellular organism, despite significant stochasticity in biomolecular reactions. Lastly, we carried out experiments in which developmental processes were induced. Our experiments showed that gene expression in different vegetative intervals along a developed filament was discoordinated, and that differentiation took place preferentially within a limited interval of the circadian clock cycle. The transition to multicellularity demanded coordination between clocks via cell-cell communication, to optimize fitness in the presence of significant demographic noise. -
Date:04TuesdayJune 2024Lecture
To be announced
More information Time 10:00 - 11:00Location Nella and Leon Benoziyo Building for Biological Sciences
CafeteriaLecturer Gabriela Koifman
Department of Biomolecular SciencesOrganizer Department of Biomolecular SciencesContact -
Date:04TuesdayJune 2024Lecture
TBA
More information Time 14:00 - 15:00Location Gerhard M.J. Schmidt Lecture HallLecturer Dr. Lior Nissim
The Faculty of Medicine Hebrew UniversityOrganizer Department of Chemical and Structural BiologyContact -
Date:05WednesdayJune 2024Lecture
Memory consolidation and generalization during sleep
More information Time 10:00 - 11:00Location Nella and Leon Benoziyo Building for Brain ResearchLecturer Ella Bar-Student Seminar-PhD Thesis Defense
Prof. Rony Paz Lab & Prof. Yuval Nir, Tel Aviv UniversityOrganizer Department of Brain SciencesContact Details Show full text description of Student Seminar-PhD Thesis Defense For accessibility issu...» Student Seminar-PhD Thesis Defense
For accessibility issues: naomi.moses@weizmann.ac.il
Abstract Show full text abstract about During sleep, our memories are reactivated and consolidated ...» During sleep, our memories are reactivated and consolidated in an active process that significantly influences our memory and decision-making. In this talk, I will present two studies about sleep-memory consolidation. The first study investigated sleep memory consolidation's local versus global properties within the brain. By exploiting the unique functional neuroanatomy of olfactory system, we were able to manipulate sleep oscillations and enhance memories locally within a single hemisphere during sleep. These findings underscore the local nature of sleep memory consolidation, which can be selectively manipulated within the brain, thereby creating an important link between theories of local sleep and learning. The second research explored the relationship between generalization processes and sleep, acknowledging that overgeneralization of negative stimuli and disruptions in sleep quality contribute to anxiety and PTSD disorders. Specifically, we studied participants' responses to stimuli associated with positive, negative, or neutral outcomes. Our findings revealed significant correlations between brain activity, as detected by fMRI, during the association of a stimulus with an outcome and the perceptual generalization of these stimuli. While activity in limbic brain areas was correlated with immediate negative stimulus generalization, we observed that the activation in these areas predicted recovery and positively related generalization following sleep. Moreover, we identified specific sleep oscillations correlated with this recovery generalization using high-density EEG recordings. These results highlight the crucial role of sleep in both generalization processes and the restoration of balanced responses to stimuli. Understanding these mechanisms can offer valuable insights into developing therapeutic strategies for anxiety and PTSD.
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Date:06ThursdayJune 2024Lecture
Vision and AI
More information Time 12:15 - 13:15Title LIPVOICER: Generating Speech From Silent Videos Guided By Lip-ReadingLocation Jacob Ziskind Building
Lecture Hall - Room 1Lecturer Sharon Ganot
Bar-Ilan UniversityOrganizer Department of Computer Science and Applied Mathematics
SeminarContact Abstract Show full text abstract about Lip-to-speech involves generating a natural-sounding speech ...» Lip-to-speech involves generating a natural-sounding speech synchronized with a soundless video of a person talking. Despite recent advances, current methods still cannot produce high-quality speech with high levels of intelligibility for challenging and realistic datasets. This talk presents LipVoicer, a novel method that generates high-quality speech, even for in-the-wild and rich datasets, by incorporating the text modality. Given a silent video, we first predict the spoken text using a pre-trained lip-reading network. We then condition a diffusion model on the video and use the extracted text through a classifier-guidance mechanism where a pre-trained automatic speech recognition (ASR) serves as the classifier. We demonstrate the effectiveness of LipVoicer through human evaluation, which shows that it produces more natural and synchronized speech signals than competing methods (demo page: https://lipvoicer.github.io). The presented LipVoicer is a joint work of Yochai Yemini, Aviv Shamsian, Lior Bracha, Sharon Gannot, and Ethan Fetaya.
Bio:
Sharon Gannot obtained his Ph.D. in electrical engineering from Tel-Aviv University, Israel, in 2000. He is a full professor in the Faculty of Engineering at Bar-Ilan University, Israel. He serves as a senior area chair for IEEE Transactions on Audio, Speech, and Language Processing, a member of the senior editorial board of IEEE Signal Processing Magazine, a member of the editorial board of IEEE SPS Education Center, and the chair of the IEEE Signal Processing Society Data Science Initiative. Previously, he was chair of the IEEE Audio and Acoustic Signal Processing Technical Committee in 2017–2018. He has also held other roles, such as the general co-chair of the 2010 International Workshop on Acoustic Signal Enhancement and the 2013 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics. He is the general co-chair of Interspeech 2024, which will be held in September in Greece. His research interests include statistical signal processing and machine learning in the audio processing domain. The methods he develops utilize multi-microphone and multi-modal information. Applications include speech enhancement, noise reduction, speaker separation and diarization, dereverberation, speaker localization, and tracking. Sharon Gannot is the recipient of the 2022 European Association for Signal Processing Group Technical Achievement Award and a Fellow of the IEEE.
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Date:06ThursdayJune 2024Lecture
Geometric Functional Analysis and Probability Seminar
More information Time 13:30 - 14:30Title TBDLocation Jacob Ziskind Building
Room 155Lecturer Alon Nishry
TAUOrganizer Department of MathematicsContact Abstract Show full text abstract about TBD ...» TBD
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Date:06ThursdayJune 2024Lecture
Insights from germline and somatic replication repair deficiency on cancer initiation and immunotherapy
More information Time 14:00 - 15:00Location Max and Lillian Candiotty Building
AuditoriumLecturer Prof. Uri Tabori
Head, Neuroonconcology program Division of Haematology/Oncology The Hospital for Sick Children Toronto, ON, CanadaOrganizer Dwek Institute for Cancer Therapy Research
Cancer Research ClubContact Details Show full text description of For joining remotely please use Zoom: https://weizmann.zoom....» For joining remotely please use Zoom: https://weizmann.zoom.us/j/5065402023?pwd=a3Z6KzRCU0xJaUFoM2Y5emZwZm1oZz09
Meeting ID: 506 540 2023
Password: 223081
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Date:13ThursdayJune 2024Conference
Annual Conference of the The Israeli Fermentation Society (2024)
More information Time 08:00 - 08:00Location The David Lopatie Conference CentreChairperson Ghil JonaContact -
Date:13ThursdayJune 2024Lecture
Vision and AI
More information Time 12:15 - 13:15Title TBALocation Jacob Ziskind Building
Lecture Hall - Room 1Lecturer Jim di Carlo
MITOrganizer Department of Computer Science and Applied Mathematics
SeminarContact Abstract Show full text abstract about TBA ...» TBA
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Date:16SundayJune 202420ThursdayJune 2024Conference
Polymer Networks and Gels (PNG)
More information Time 08:00 - 08:00Location David Lopatie Conference CentreChairperson Nir KampfContact -
Date:17MondayJune 2024Colloquia
title tbd
More information Time 11:00 - 12:15Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Michael R. Wasielewski
Department of Chemistry, Northwestern UniversityOrganizer Faculty of ChemistryHomepage Contact -
Date:17MondayJune 2024Lecture
Foundations of Computer Science Seminar
More information Time 11:15 - 12:15Title Incompressibility and Next-Block PseudoentropyLocation Jacob Ziskind Building
Room 155Lecturer Noam Mazor
Cornell TechOrganizer Department of Computer Science and Applied Mathematics
SeminarContact Abstract Show full text abstract about A distribution is k-incompressible, Yao [FOCS ’82], if no ef...» A distribution is k-incompressible, Yao [FOCS ’82], if no efficient compression scheme compresses it to less than k bits. While being a natural measure, its relation to other computational analogs of entropy such as pseudoentropy (Hastad, Impagliazzo, Levin, and Luby [SICOMP 99]), and to other cryptographic hardness assumptions, was unclear.
We advance towards a better understating of this notion, showing that a k-incompressible distribution has (k-2) bits of next-block pseudoentropy, a refinement of pseudoentropy introduced by Haitner, Reingold, and Vadhan [SICOMP ’13]. We deduce that a samplable distribution X that is (H(X) 2)-incompressible, implies the existence of one-way functions.
Joint work with Iftach Haitner and Jad Silbak.
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Date:17MondayJune 2024Lecture
Foundations of Computer Science Seminar
More information Time 11:15 - 12:15Title Coding Theory in Almost-Linear Time and Sub-Linear SpaceLocation Jacob Ziskind Building
Room 155Lecturer Dana Moshkovitz
UT AustinOrganizer Department of Computer Science and Applied Mathematics
SeminarContact Abstract Show full text abstract about Typical time-efficient encoding and decoding algorithms for ...» Typical time-efficient encoding and decoding algorithms for error correcting codes use linear space. We construct asymptotically good codes that can be deterministically encoded in almost linear time and sub-linear space, as well as asymptotically good codes that can be deterministically decoded in this complexity. The encodable codes are based on condenser graphs. The decodable codes are based on locally correctable codes and a new efficient derandomization method. We believe that the new derandomization method is of independent interest.
The talk is based on joint works with Joshua Cook (University of Texas at Austin).
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Date:18TuesdayJune 2024Lecture
To be announced
More information Time 10:00 - 11:00Location Nella and Leon Benoziyo Building for Biological Sciences
CafeteriaLecturer Prof. Yuval Ebenstein
Department of Physiology and Pharmacology. Faculty of Medicine. Tel-Aviv UniversityOrganizer Department of Biomolecular SciencesContact -
Date:19WednesdayJune 2024Lecture
LS Luncheon
More information Time 12:00 - 14:00Location Nella and Leon Benoziyo Building for Biological Sciences
AuditoriumLecturer Prof. Yifat Merbl
Department of Systems ImmunologyOrganizer Life SciencesContact -
Date:20ThursdayJune 2024Lecture
Spotlight on Science
More information Time 13:00 - 14:00Title TBALocation Gerhard M.J. Schmidt Lecture HallOrganizer Science for All Unit
Staff Scientists SeminarContact -
Date:20ThursdayJune 2024Lecture
Glioma cellular heterogeneity in time and space
More information Time 14:00 - 15:00Location Max and Lillian Candiotty Building
AuditoriumLecturer Dr. Itay Tirosh
The Dr. Celia Zwillenberg-Fridman and Dr. Lutz Zwillenberg Career Development Chair Department of Molecular Cell Biology Faculty of BiologyOrganizer Dwek Institute for Cancer Therapy Research
Cancer Research ClubContact Details Show full text description of For joining remotely please use Zoom: https://weizmann.zoom....» For joining remotely please use Zoom: https://weizmann.zoom.us/j/5065402023?pwd=a3Z6KzRCU0xJaUFoM2Y5emZwZm1oZz09
Meeting ID: 506 540 2023
Password: 223081
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Date:25TuesdayJune 2024Lecture
To be announced
More information Time 10:00 - 11:00Location Nella and Leon Benoziyo Building for Biological Sciences
AuditoriumLecturer Dr. Daria Amiad-Pavlov
Dept. of Molecular GeneticsOrganizer Department of Biomolecular SciencesContact -
Date:26WednesdayJune 2024Lecture
Spotlight on Science
More information Time 13:00 - 14:00Title TBALocation Max and Lillian Candiotty BuildingLecturer Ehud Funio
Dr.Organizer Science for All Unit
Staff Scientists SeminarContact