Abstract: "Heterogeneous catalysis is critically important in the chemical-processing and energy-related industries. Ideally, reaction sites on heterogeneous catalysts can be regenerated, and the catalysts should be active throughout the catalytic process. However, harsh reaction conditions and parallel side reactions can be harmful to the metal catalysts, making deactivation a common phenomenon. Finding a catalyst that […]
Abstract: Sintering is a severe problem with supported-metal catalysts in high-temperature applications, such as in automotive-emissions control, because it leads to a loss of catalytically active surface area. To stabilize the metal particles, in 2001, the Daihatsu group proposed using perovskite-supported metals, which they referred to as “intelligent” catalysts. The original goal was to regenerate […]
We present methods to sculpt light at the atomic and molecular scale to detect and control chemical transformations, en-route to improved planetary and personal health. First, we study plasmon-driven chemical transformations, focussing on the photocatalytic dehydrogenation of AuPd systems. Here, the Au acts as a plasmonic light absorber and Pd serves as the catalyst. Using […]
The Department of Bioengineering at the University of Pennsylvania and Dr. Ravi Radhakrishnan are pleased to announce the Doctoral Dissertation Defense of Lindsey Fernandez. The public is welcome to attend via Blujeans (Meeting ID 680 058 608 4). Title: "Multiscale Modeling of Cell Fate Switching to Predict Patient-specific Response to Combination Cancer Therapy"
Abstract: The lecture that I will cover is going to be on Hash Tables. The lecture is designed for an introductory CS course and/or a data structures course. We are in the last 3rd of the semester when this topic is covered. At this point, students are comfortable with programming (in Python). In addition, they […]
The Department of Bioengineering along with Drs. Walter Witschey and John Detre are pleased to announce the Doctoral Dissertation Defense of Eileen Hwuang. The public is welcome to attend via Zoom. Title: "Magnetic resonance imaging assessment of maternal uteroplacental hemodynamics during pregnancy" Zoom link Meeting ID: 745 723 0989 Passcode: 526101
Abstract: The fundamental issue underlying natural language understanding is that of semantics – there is a need to move toward understanding natural language at an appropriate level of abstraction in order to support natural language understanding and communication with computers.
Machine Learning has become ubiquitous in our attempt to induce semantic representations of natural language and support decisions that depend on it; however, while we have made significant progress over the last few years, it has focused on classification tasks for which we have large amounts of annotated data. Supporting high level decisions that depend on natural language understanding is still beyond our capabilities, partly since most of these tasks are very sparse and generating supervision signals for it does not scale.
I will discuss some of the challenges underlying reasoning – making natural language understanding decisions that depend on multiple, interdependent, models, and exemplify it using the domain of Reasoning about Time, as it is expressed in natural language.
This seminar will be held virtually on Zoom. Check email for details or contact ksas@seas.upenn.edu. Although much progress has been made in building artificial human tissues over the past several decades, replicating complex tissue structure remains an enormous challenge. To overcome this challenge, our field first needs to create better three-dimensional spatial maps, or “blueprints” […]
Hosted by Greenfield Intercultural Center
Abstract: The seminar will focus on the opportunities and challenges offered by the digital transformation of healthcare which was accelerated in the COVID-19 Pandemia. In this framework rehabilitation and social robotics can play a fundamental role as enabling technologies for providing innovative therapies and services to patients even at home or in remote environments. In […]
Abstract: Many tasks in fluid mechanics, such as design optimization and control, are challenging because fluids are nonlinear and exhibit a large range of scales in both space and time. This range of scales necessitates exceedingly high-dimensional measurements and computational discretization to resolve all relevant features, resulting in vast data sets and time-intensive computations. Indeed, […]
Physical Sciences in Oncology Center PSOC@Penn Spring 2021 Webinar Series Mondays at 12:00 noon (EST) For webinar links, please contact manu@seas.upenn.edu.
The elastic properties of materials are determined by a few material constants such as the Young’s modulus. Using super-structures one can effectively change these “constants”. In this way we obtain functionalities such as wave-guiding, acoustic lensing or programmable failure. I will show how topological band theory, known from the description of electrons in solids, provides […]
Abstract In recent years, a new type of synthetic microparticle has captured the imagination of researchers across the physical and biological sciences. These so-called active colloids convert chemical or environmental free energy into irreversible directed motion. Impressively, the active force generated by the particles can lead to self-propelling speeds of tens of hundreds of microns […]
Dr. Cornel West is Professor of the Practice of Public Philosophy at Harvard University and Professor Emeritus at Princeton University. Cornel West graduated Magna Cum Laude from Harvard in three years and obtained his M.A. and Ph.D. in Philosophy at Princeton. He has written 20 books and has edited 13. He is best known for […]
This seminar will be held virtually - Zoom link coming soon. The engineering of Biology presents infinite opportunities for therapeutic design, diagnosis, and prevention of disease. We use what we know from Nature to engineer systems with predictable behaviors. We also seek to discover new natural strategies to then re-engineer. I will present concepts and […]
Abstract: Haptic devices allow touch-based information transfer between humans and intelligent systems, enabling communication in a salient but private manner that frees other sensory channels. For such devices to become ubiquitous, their physical and computational aspects must be intuitive and unobtrusive. The amount of information that can be transmitted through touch is limited in large […]
Find out how you can get more involved with STEM faculty and students. Learn more about STEM majors at Penn. Hosted by the Makuu Center and the SEAS Office of Diversity, Equity and Inclusion. For more information, contact Rita Powell, rpowell@cis.upenn.edu This panel discussion was recorded and is available here for viewing.
I will present recent work on the modeling of the structural response of shape memory alloy tubes, bars, and beams. We have developed a new constitutive model that captures pseudoelastic transformation induced recoverable deformation in SMAs including the strong asymmetries in the tensile and compressive responses. Instead of introducing multiple conditions for forward phase transformation, […]
Esteemed faculty from five disciplines at Penn will come together to unpack the myriad policies, messages, and conditions that led to the events at the U.S. Capitol on January 6, 2021, as well as explore how we move forward as a country. This 90-minute panel discussion — moderated by Dean Erika James of the Wharton […]
Abstract: Exercising control over the formation of ice and similar crystalline structures is important in a variety of contexts, from preserving organs for transplant to preventing clathrate hydrate plugs in natural gas pipelines. To achieve this control, it is crucial to understand nucleation phenomena at the molecular level. Studies have shown that heterogeneous nucleation proceeds […]
Abstract Machine learning and multiscale modeling complement each other in a unique way, enabling us to seamlessly integrate big data and biophysical pathways and interpret the results while formulating truly predictive and generalizable models, based on both data and physics. In multiscale modeling, I have developed adaptive methods and kinetic models to simulate intracellular polymerization […]
Abstract: The Burro team, including Terry Scott (CTO) and Charlie Andersen (CEO) will provide an overview of their people-scale vision-based autonomous platform and their experiences selling Burros and building an autonomy business, within agriculture. Join the Zoom Meeting here
Thursday, February 4 | 2:00pm–8:00pm ET | Online Register Here: https://pennabroad.vfairs.com/ At the Penn Global Opportunities Fair, Penn undergraduate and graduate students from across all schools and programs are invited to explore the many exciting international initiatives, student support services, and global opportunities that make up life at Penn. You will have the opportunity to explore […]
This event will be held virtually on Zoom - check email for link or contact ksas@seas.upenn.edu. The idea that mechanical stresses influence the growth and form of organs and organisms originated in the 1800s and is the basis for the modern study of biomechanics and mechanobiology. Biomechanics and mechanobiology are well studied in eukaryotic systems, […]
Abstract: Over the last decade, the idea that robots and agents might participate meaningfully in complex group and organizational contexts has developed from a promising vision into a reality. Robots now assist humans in simple tasks such as delivery through complex, high-stakes tasks such as disaster response and surgery. In this talk, I will introduce […]
