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DTSTART;TZID=America/New_York:20221101T100000
DTEND;TZID=America/New_York:20221101T113000
DTSTAMP:20260405T121011
CREATED:20221018T125330Z
LAST-MODIFIED:20221018T125330Z
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SUMMARY:MEAM Seminar: "Mechanical Behavior of Self-healing Hydrogels with Chemical and Physical Cross-links: Theory and Experiments"
DESCRIPTION:In recent years polymer chemists have made tremendous strides in the synthesis of biocompatible\, tough\, self-healing hydrogels. However\, there are not many comprehensive mechanical models that capture the observed time dependent mechanical behavior of these gels (especially fracture) to the underlying\, rate dependent bond breaking and reformation processes. In this talk I will summarize some of the progress we have made on two systems; the first is a Poly(vinylalcohol) (PVA) hydrogel chemically crosslinked by glutaraldehyde and physically crosslinked by Borax ions. The second is a chemically crosslinked Polyampholyte gel (c-PA) synthesized by random copolymerization of cationic and anionic monomers at a high concentration around the charge balanced point. We formulated a 3D\, large deformation viscoelastic constitutive model based on breaking and healing kinetics of physical cross-links. We demonstrate this model accurately captures the rate dependent behavior of these gels under complex loading histories. We studied the asymptotic structure of the crack tip fields. We develop a finite element model to numerically study the stress and deformation fields near the tip of a stationary crack in single edge cracked specimens. The theoretical and finite element results (3D and 2D plane stress) agree remarkably well with experimentally observed crack opening profiles in the PVA gel system. The model parameters are extracted from experiments using a newly developed fitting method based on Meta-modeling and Neutral network. We carried out relaxation experiments on two different types of samples to study the nonlinear viscoelastic behavior of the c-PA system. A simple model is used to explain this behavior. Our modelling and experimental efforts can lead to better understanding of the complex load transfer process near the crack tip and time dependent delayed fracture of gels and elastomers.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-mechanical-behavior-of-self-healing-hydrogels-with-chemical-and-physical-cross-links-theory-and-experiments/
LOCATION:Zoom – Email MEAM for Link\, peterlit@seas.upenn.edu
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221101T153000
DTEND;TZID=America/New_York:20221101T163000
DTSTAMP:20260405T121011
CREATED:20220928T124405Z
LAST-MODIFIED:20220928T124405Z
UID:10007310-1667316600-1667320200@seasevents.nmsdev7.com
SUMMARY:CIS Seminar: " Rich Babies\, Poor Robots: towards rich sensing\, continuous data and multiple environments"
DESCRIPTION:In recent years\, we have seen a shift in different fields of AI such as computer vision\, robotics. From task-driven supervised learning\, we are now starting to see shift towards more human like learning. Self-supervised learning\, embodied AI\, multimodal learning are few subfields which have emerged from this shift. Yet I will argue the shift is half-hearted in nature and there is a huge situational gap between babies (human learners) and current robots. Our babies learn continuously from multiple environment using five different senses using both active and passive data.  On the other hand\, our AI algorithms still primarily use vision (best case)\, learn from fixed datasets or pre-defined environments and use either passive or active data. In this talk\, I will argue how to bridge this gap. First\, I will talk about how to bring tactile sensing into mainstream. More specifically\, I will introduce our magnetic sensing skin called ReSkin. Next I will talk how our current setups lack the lifelong learning aspect. More specifically\, I will introduce our recent efforts in developing continuous versions of self-supervision and curiosity/exploration. Finally\, if time remains I will talk about how to use passive and active data together to learn actions.
URL:https://seasevents.nmsdev7.com/event/cis-seminar-rich-babies-poor-robots-towards-rich-sensing-continuous-data-and-multiple-environments/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Computer and Information Science":MAILTO:cherylh@cis.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221102T120000
DTEND;TZID=America/New_York:20221102T133000
DTSTAMP:20260405T121011
CREATED:20220909T133247Z
LAST-MODIFIED:20220909T133247Z
UID:10007264-1667390400-1667395800@seasevents.nmsdev7.com
SUMMARY:ASSET Seminar: Building certifiably safe and correct large-scale autonomy\, Chuchu Fan (Massachusetts Institute of Technology)
DESCRIPTION:ABSTRACT: \nThe introduction of machine learning (ML) and artificial intelligence (AI) creates unprecedented opportunities for achieving full autonomy. However\, learning-based methods in building autonomous systems can be extremely brittle in practice and are not designed to be verifiable. In this talk\, I will present several of our recent efforts that combine ML with formal methods and control theory to enable the design of provably dependable and safe autonomous systems. I will introduce our techniques to generate safety certificates and certified control for complex autonomous systems\, even when the systems have a large number of agents and follow nonlinear and nonholonomic dynamics.
URL:https://seasevents.nmsdev7.com/event/asset-seminar-tba-chuchu-fan-massachusetts-institute-of-technology/
LOCATION:Levine 307\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Computer and Information Science":MAILTO:cherylh@cis.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221102T153000
DTEND;TZID=America/New_York:20221102T163000
DTSTAMP:20260405T121011
CREATED:20220909T195757Z
LAST-MODIFIED:20220909T195757Z
UID:10007276-1667403000-1667406600@seasevents.nmsdev7.com
SUMMARY:CBE Seminar Series: "It Takes Two: Conserved Bimodal Interactions between the Coronavirus Fusion Peptide and Calcium Ions Promote Host Membrane Insertion and Viral Entry" (Susan Daniel\, Cornell University)
DESCRIPTION:
URL:https://seasevents.nmsdev7.com/event/cbe-seminar-series-it-takes-two-conserved-bimodal-interactions-between-the-coronavirus-fusion-peptide-and-calcium-ions-promote-host-membrane-insertion-and-viral-entry-susan-daniel-cornell-univ/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221103T103000
DTEND;TZID=America/New_York:20221103T113000
DTSTAMP:20260405T121011
CREATED:20221021T181508Z
LAST-MODIFIED:20221021T181508Z
UID:10007340-1667471400-1667475000@seasevents.nmsdev7.com
SUMMARY:MSE Seminar: “Emerging Energy Materials: Joule Heating and Wood”
DESCRIPTION:I lead an Energy Materials and Devices research group at the University of Maryland\, College Park\, with a major mission to address the CO2 challenge. Our current research interests include (1) ultrahigh-temperature synthesis of new materials and their use in advanced energy devices\, (2) beyond Li-ion batteries for transportation and the grid\, and (3) wood nanoscience and nanotechnologies. \nIn this seminar I will share my group’s research and development of electrified ultrahigh-temperature synthesis as a novel platform for discovering and manufacturing new energy and environmental materials. I will start with the design and fabrication of ultrahigh temperature heaters\, followed by two specific research topics\, including high entropy nanoparticles (Science 2018\, 359\, 1489\, Cover) and a high-performance battery membrane (Science 2020\, 358\, 521\, Cover). Then I will give an overview of wood nanoscience and nanotechnologies and a few specific examples including solid state ion conductors (Nature 2021) and radiation cooling (Science 2019\, 364\, 760)
URL:https://seasevents.nmsdev7.com/event/mse-seminar-emerging-energy-materials-joule-heating-and-wood/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221103T153000
DTEND;TZID=America/New_York:20221103T163000
DTSTAMP:20260405T121011
CREATED:20220812T144510Z
LAST-MODIFIED:20220812T144510Z
UID:10007225-1667489400-1667493000@seasevents.nmsdev7.com
SUMMARY:BE Seminar: "Precision Engineering for Cancer Immunotherapy" (James Moon\, University of Michigan)
DESCRIPTION:This is a hybrid seminar which will be held in Glandt Forum (Singh Center) and via Zoom (link coming soon). \nPrecision Engineering for Cancer Immunotherapy \nCancer immunotherapy is now considered the fourth pillar of cancer therapy\, joining the ranks of surgery\, radiotherapy\, and chemotherapy. However\, only a small subset of cancer patients responds to cancer immunotherapy. Thus\, new approaches are needed to amplify anti-tumor immunity\, to convert cold tumor into hot tumor\, and to potentiate immunotherapies with minimal immune-related adverse events. The gut microbiome has recently emerged as the next frontier in drug development; however\, it remains unclear how to effectively alter gut microbiota for treating various diseases\, including cancer. Here\, we present new biomaterial-based strategies for altering the gut microbiome and improving the safety and efficacy of cancer immunotherapy. We are developing new dietary fiber-based biomaterials for in situ modulation of the gut microbiome for augmenting local and systemic immune responses. We will present the therapeutic potential of our gut modulation approach in the context of improving the efficacy of immune checkpoint blockers while mitigating immune-related adverse events. In our second research thrust\, we are developing a new nanoparticle platform for systemic delivery of STING (stimulator of IFN genes) agonists. While local STING activation can convert cold tumor into hot tumor\, it has been challenging to develop STING agonists that can treat disseminated cancer due to their toxicity. Here\, we will present our next-generation STING agonists that allow for systemic cancer therapy with potent efficacy\, favorable pharmaceutical properties\, and acceptable safety profiles in various murine and rabbit tumor models. Our biomaterial-based strategies may offer powerful and convenient approaches to regulate the immune system as potential therapies for cancer and other diseases.
URL:https://seasevents.nmsdev7.com/event/be-seminar-precision-engineering-for-cancer-immunotherapy-james-moon-university-of-michigan/
LOCATION:Glandt Forum\, Singh Center for Nanotechnology\, 3205 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221103T170000
DTEND;TZID=America/New_York:20221103T190000
DTSTAMP:20260405T121011
CREATED:20221024T194217Z
LAST-MODIFIED:20221024T194217Z
UID:10007342-1667494800-1667502000@seasevents.nmsdev7.com
SUMMARY:Fall 2022 GRASP Industry Talk - Zoox Company Info Session: The Future of Transportation & Autonomous Vehicles
DESCRIPTION:Overview:  \nCome network with Zoox employees as we discuss Zoox’s mission\, the challenges we’re encountering in the industry\, and the internship opportunities available in 2023. \nAbout us:\nZoox is developing the first ground-up\, fully autonomous vehicle fleet and the supporting ecosystem required to bring this technology to market. Sitting at the intersection of robotics\, machine learning\, and design\, Zoox aims to provide the next generation of mobility-as-a-service in urban environments. \nWhat you’ll get out of this event: \n– Learn more about Zoox and our unique approach to launching an autonomous vehicle robo-taxi service\n– Insight into the challenges and trends within the autonomous vehicle industry\n– Networking opportunity with Zoox employees
URL:https://seasevents.nmsdev7.com/event/fall-2022-grasp-industry-talk-zoox-company-info-session-the-future-of-transportation-autonomous-vehicles/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="General Robotics%2C Automation%2C Sensing and Perception (GRASP) Lab":MAILTO:grasplab@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221104T100000
DTEND;TZID=America/New_York:20221104T120000
DTSTAMP:20260405T121011
CREATED:20221027T152101Z
LAST-MODIFIED:20221027T152101Z
UID:10007345-1667556000-1667563200@seasevents.nmsdev7.com
SUMMARY:CBE PhD Dissertation Defense: Keshav Patil
DESCRIPTION:
URL:https://seasevents.nmsdev7.com/event/cbe-phd-dissertation-defense-keshav-patil/
LOCATION:Room 534 A Wing\, 3401 Walnut\, 3401 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Dissertation or Thesis Defense
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221104T103000
DTEND;TZID=America/New_York:20221104T114500
DTSTAMP:20260405T121011
CREATED:20221025T202538Z
LAST-MODIFIED:20221025T202538Z
UID:10007343-1667557800-1667562300@seasevents.nmsdev7.com
SUMMARY:Fall 2022 GRASP on Robotics: Wenzhen Yuan\, Carnegie Mellon University\, "Making sense of the physical world with high-resolution tactile sensing"
DESCRIPTION:This is a hybrid event with in-person attendance in Wu and Chen and virtual attendance via Zoom. \n  \nABSTRACT\nIn this talk\, I will introduce the development of a high-resolution robotic tactile sensor GelSight\, and how it can help robots understand and interact with the physical world. GelSight is a vision-based tactile sensor that measures the geometry of the contact surface with a spatial resolution of around 25 micrometers\, and it also measures the shear forces and torques at the contact surface. With the help of high-resolution information\, a robot could easily detect the precise shape and texture of the object surfaces and therefore recognize them. But it can help robots get more information from contact\, such as understanding different physical properties of the objects and assisting with manipulation tasks. The talk will cover our work on using GelSight to detect slip during grasping and perceiving object properties such as hardness and viscosity of the liquid. I will also present our work in simulating the tactile sensor and using the simulated sensor input to boost the robot’s capability to perform perception and grasping tasks in reality. These simulation tools can also help us to rethink the sensor design challenge and how tactile sensors can be used for various types of robots.
URL:https://seasevents.nmsdev7.com/event/fall-2022-grasp-on-robotics-wenzhen-yuan-carnegie-mellon-university-making-sense-of-the-physical-world-with-high-resolution-tactile-sensing/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="General Robotics%2C Automation%2C Sensing and Perception (GRASP) Lab":MAILTO:grasplab@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20221104T140000
DTEND;TZID=America/New_York:20221104T150000
DTSTAMP:20260405T121011
CREATED:20220919T144211Z
LAST-MODIFIED:20220919T144211Z
UID:10007296-1667570400-1667574000@seasevents.nmsdev7.com
SUMMARY:PICS Colloquium: "Group-Theoretic Approach for Nonlinear Problems in Mechanics with High Symmetry Avoids Use of Imperfections"
DESCRIPTION:Many interesting problems in nonlinear mechanics\, from classical to more recent\, pertain to applications with high initial symmetry: from the buckling of thin walled structures to the morphing in architected materials – the list is long! A common feature of these problems\, in addition to their importance for engineering applications\, is their great theoretical interest due to the complex bifurcation mechanisms leading to their failure. Unlike the classical Euler column buckling with the widely separated bifurcation points where the post-bifurcation equilibrium paths can be easily found using imperfections in the shape of the different eigenmodes\, using imperfections in these highly symmetric structures with complex bifurcation diagrams is confusing and can often lead to erroneous results. \nThe method proposed here is based on the perfect structure and uses the properties of its initial symmetry group to identify and follow the bifurcated equilibrium paths: primary\, secondary\, tertiary and so on\, and for the case of elastic systems\, to study their stability. Three different applications will be presented here: the development of folds and creases in an axially compressed elastic half-space\, the pattern formation in biaxially compressed circular honeycomb and the thermo-mechanical martensitic transformations in NiTi crystals. Time-permitting some additional applications in dissipative systems (step bunching and meandering instabilities homoepitaxial crystal growth) might be presented.
URL:https://seasevents.nmsdev7.com/event/pics-colloquium-group-theoretic-approach-for-nonlinear-problems-in-mechanics-with-high-symmetry-avoids-use-of-imperfections/
LOCATION:PICS Conference Room 534 – A Wing \, 5th Floor\, 3401 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Penn Institute for Computational Science (PICS)":MAILTO:dkparks@seas.upenn.edu
END:VEVENT
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