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    • ESE Fall Seminar – “Non-Parametric Analysis of Dynamical Systems: From Recurrent Sets to Generalized Lyapunov and Barrier Conditions”

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    Raisler Lounge (Room 225), Towne Building 220 South 33rd Street, Philadelphia, PA, United States

    This talk presents novel non-parametric methods for analyzing dynamical systems using solely trajectory data. Our critical insight is to replace the notion of invariance, a core concept in Lyapunov Theory, with the more relaxed condition of recurrence. Specifically, a set is τ-recurrent if every trajectory that starts within the set returns to it after at […]

    CIS Seminar: ” Just Infrastructures”

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    Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

    Sociotechnical systems enable large-scale connection and the dissemination of timely, engaging information. However, these systems are shaped by complex, often invisible governance structures—comprising rules, roles, and relationships—that significantly influence how they operate. Gaining even a basic understanding of these governance structures is key to using them more effectively and deliberately. Yet, many of the millions […]

    CIS Seminar: “Just Infrastructures”

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    Wu & Chen Auditorium

    Sociotechnical systems enable large-scale connection and the dissemination of timely, engaging information. However, these systems are shaped by complex, often invisible governance structures—comprising rules, roles, and relationships—that significantly influence how they operate. Gaining even a basic understanding of these governance structures is key to using them more effectively and deliberately. Yet, many of the millions […]

    ASSET Seminar: “Control with Coarse Measurements: Perception Contracts and Indistinguishable Sets”

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    Raisler Lounge (Room 225), Towne Building 220 South 33rd Street, Philadelphia, PA, United States

    Abstract: Performance of control systems depend on the nature of available measurements. Perception of edges, keypoints, landmarks and other natural semantic features make certain coarse measurements available to control systems operating in complex environments.  This talk explores two problems related to control and estimation with such coarse measurements. First, I will introduce perception contracts—an approach for analyzing visual […]

    CIS Special Industry Colloquium: “Scaling Paradigms for Large Language Models”

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    Glandt Forum, Singh Center for Nanotechnology 3205 Walnut Street, Philadelphia, PA, United States

    In this talk I will tell you how scaling has been the engine of progress in AI for the past five years. In the first scaling paradigm, our field scaled large language models by training with more compute on more data. Such scaling led to the success of ChatGPT and other AI chat engines, which were surprisingly capable […]

    GRASP Special Panel featuring the 2024 John Scott Award Recipients

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    This is an in-person event only and is not open to the public. Event Registration and Penncards are required. A link to register for the event will be sent via email. PANEL DISCUSSION Please join us for a panel discussion featuring the 2024 John Scott Award Recipients, Dr. Takeo Kanade (CMU), Dr. Vijay Kumar (Penn), […]

    CBE Seminar: “Scalable Access to the Hidden Topologies of Biology” (Albert Keung, North Carolina State University)

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    Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

    Abstract: Biology is characterized by a diversity of phenotypes and functions that outpace the limited molecular diversity encoded in genomes. How this is achieved is a fundamental and enduring mystery of the cell. It is clear that networks defining how biological molecules interact can drive diverse and complex phenotypes, but the intermolecular interactions or edges […]

    Fall 2024 GRASP SFI: Gioele Zardini, Massachusetts Institute of Technology, “Compositional Design of Complex Systems: From Autonomy to Future Mobility”

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    Levine 307 3330 Walnut Street, Philadelphia, PA, United States

    This seminar will start at 3:30 PM instead of 3:00. This will be a hybrid event with in-person attendance in Levine 307 and virtual attendance on Zoom. ABSTRACT When designing complex systems, we need to consider multiple trade-offs at various abstraction levels and scales, and choices of single components need to be studied jointly. For […]

    MEAM Ph.D. Thesis Defense: “Tribosintering of Metal Oxide Nanocrystals”

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    Glandt Forum, Singh Center for Nanotechnology 3205 Walnut Street, Philadelphia, PA, United States

    Machinery relies on lubrication to regulate friction and wear at contacting interfaces. As lubricants become less viscous to save energy and cost, and as new technologies like electric vehicles operate in harsher conditions, the risk of surface-initiated failure grows. We show that metal oxide nanocrystals (NCs) dispersed in lubricants form protective coatings, or tribofilms, in […]

    THIS EVENT HAS BEEN CANCELLED: ESE Fall Seminar – “A changing grid powered by the new generations of power conversion, control, and energy management”

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    Towne 337

    The electric grid is undergoing a transformative paradigm shift, driven by sweeping changes in generation, demand, and energy storage. By 2035, solar PV alone is expected to supply 40% of U.S. electricity, with substantial additional contributions from wind, geothermal, and hydroelectric sources—creating a renewable-dominant energy landscape. Meanwhile, electricity demand is accelerating due to rapid growth […]

    MSE Seminar: “Nano to Mesoscale: Structure, Composition, and Transport Processes in Human Dental Enamel”

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    Wu and Chen Auditorium (Room 101), Levine Hall 3330 Walnut Street, Philadelphia, PA, United States

    Mineralized tissues are paradigmatic hierarchical materials that reap synergy from structural and compositional gradients at multiple length scales in ways that are challenging to reproduce by conventional means. My laboratory studies the formation, functional properties, and degradation of mineralized tissues. We use model systems ranging from single crystalline endoskeletal elements deposited by single cells to […]