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Dr.Thomas Marzetta- Wireless Power Transfer: Principles and Prospects | NSF

May 13th, 2021, 11am-12:30pm
May 13, 2021 11:00 AM
to
May 13, 2021 12:30 PM
Virtual Meeting
Talk Abstract: The promise of wireless power transfer is exciting: cable-free operating rooms, battery-less drones, and factories populated by untethered robots. In short, a technological revolution. Some of the fundamental principles of wireless power have been fully elucidated: any system of transmitting/receive antennas is quantitatively described by an impedance matrix, the activity of matching the load impedance to the radiation impedance of the receive antenna is inconsistent with maximizing transfer efficiency, and efficiency-maximizing antenna currents are solutions to a generalized eigenvector/eigenvalue problem. But it is safe to say that our understanding of wireless power is very much incomplete, and there is considerable scope for breakthrough research, for which possible directions include metamaterials, superconductivity, new forms of MIMO, and super-directivity. U.S. industry and universities are not doing enough bold, fundamental research to make this happen. Funding agencies could improve the impact of universities through a redirection of research metrics to embrace risk and emphasize potential impact. Lack of working knowledge of electromagnetic theory is a serious obstacle to the contribution of many communications and signal processing researchers. To remedy this, I have developed a new graduate course at NYU, "A Linear System Approach to Wave Propagation", which replaces the traditional physicist's treatment of Maxwell's equations, based on potentials and the method of separation of variables, with a frequency/wavenumber Fourier transform solution better suited for engineering problems.

Sweden , United-states , Washington , America , Blaine-rivas , Gurdip-singh , Henrya-kautz , Schlumberger , Massachusetts-institute-of-technology , Communications-society-industrial-innovation-award , Statistical-sciences-department , National-academy-of-engineering

Nancy Lynch- A Theoretical View of Distributed Systems | NSF - National Science Foundation

April 1st, 11am-12:30pm
April 1, 2021 12:30 PM
Virtual Meeting
Talk Abstract: For several decades, my collaborators, students, and I have worked on theory for distributed systems in order to understand their capabilities and limitations in a rigorous, mathematical way. This work has produced many different kinds of results, including:
• Abstract models for problems that are solved by distributed systems, and for the algorithms used to solve them
• Rigorous proofs of algorithm correctness and performance properties (also some error discoveries),
• Impossibility results and lower bounds, expressing inherent limitations of distributed systems,
• Some new algorithms, and
• General mathematical foundations for modeling and analyzing distributed systems.

United-states , American , Livestream-youtube , Blaine-rivas , Nancy-lynch , Henrya-kautz , Ai-laboratory , Brooklyn-college , National-academies-of-sciences , Professor-of-software-science , American-academy-of-arts , Department-of-electrical-engineering

Rommie Amaro- Computational Microscopy of SARS-CoV-2 | NSF - National Science Foundation

March 4th, 2021 2:00pm-3:30pm
March 4, 2021 2:00 PM
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March 4, 2021 3:30 PM
Virtual Meeting
Talk Abstract: I will discuss our lab’s efforts, together with collaborators, to understand the SARS-CoV-2 virus in atomic detail, with the goals to better understand molecular recognition of the virus and host cell receptors, antibody binding and design, and the search for novel therapeutics. I will focus on our studies of the spike protein, its glycan shield, its interactions with the human ACE2 receptor, our efforts to model the SARS-CoV-2 virion, and escape variants.

Bio: Rommie E. Amaro holds the Distinguished Professorship in Theoretical and Computational Chemistry at the Department of Chemistry and Biochemistry at the University of California, San Diego. She received her B.S. in Chemical Engineering (1999) and her Ph.D. in Chemistry (2005) from the University of Illinois at Urbana-Champaign. Rommie was an NIH postdoctoral fellow with Prof. J. Andrew McCammon at UC San Diego from 2005-2009 and started her independent lab in 2009. She is the recipient of an NIH New Innovator Award, the Presidential Early Career Award for Scientists and Engineers, the ACS COMP OpenEye Outstanding Junior Faculty Award, the ACS Kavli Foundation Emerging Leader in Chemistry, the Corwin Hansch Award, and the 2019 Gordon Bell Special Prize for COVID19. Rommie’s scientific interests lie at the intersection of computer-aided drug discovery and biophysical simulation. Her scientific vision revolves around expanding the range and complexity of molecular constituents represented in such simulations, the development of novel multiscale methods for elucidating their time-dependent dynamics, and the discovery of novel chemical matter controlling biological function.

California , United-states , San-diego , J-andrew-mccammon , Blaine-rivas , Henrya-kautz , Rommiee-amaro , University-of-california , Department-of-chemistry , Kavli-foundation-emerging-leader-in-chemistry , University-of-illinois-at-urbana-champaign , Distinguished-professorship

James Howison: Challenges and Pathways to sustainability in Scientific software ecosystems | NSF

January 14, 2021 11am-12:30pm
January 14, 2021 11:00 AM
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January 14, 2021 12:30 PM
Virtual Meeting
Talk Abstract: A key challenge of science policy is to achieve sustained benefit from scientific grantmaking. In this presentation, I will provide a framework for thinking about sustainability in scientific software projects, based on empirical studies of development and use of software in science. The framework starts by asking: what is it that causes sustainability problems? Over time, software declines in scientific usefulness, driven by four factors: a moving scientific frontier, technological change, friction in building software, friction in using software, and, least appreciated, change in the software ecosystem sounding a component. These factors drive a need for work; in response, we can try to suppress the drivers, try to reduce the amount of work needed, or attract sufficient resources able to undertake the work needed to sustain scientific usefulness. I will analyze three systems by which projects obtain resources: commercial markets, grant-making, and community-based peer-production. I will conclude with recent results from a study into pathways to sustainable peer production in NSF grant-funded projects.

Texas , United-states , Blaine-rivas , James-howison , Manish-parashar , Henrya-kautz , Sloan-foundation , Information-sciences , Associate-professor , Information-school , Information-systems , Computer-supported-cooperative-work

Barbara Liskov: Reflections on Programming Methodology | NSF - National Science Foundation

December 17th, 11am-12:30pm
December 17, 2020 12:30 PM
Virtual Meeting
Talk Abstract: Research in programming methodology led to the development of the principles and methods that underlie how the implementations of modern software systems are designed and organized. At the center of this work are the notions of abstraction and modularity. These ideas are related: design is the process of inventing and identifying abstractions, which become the modules that make up the implementation. This talk will discuss our current understanding of abstraction and modularity and the research that got us to where we are today.
Bio: Barbara Liskov is an Institute Professor at MIT. Her research interests include distributed and parallel systems, programming methodology, and programming languages. Liskov is a member of the National Academy of Engineering, the National Academy of Sciences, the National Inventors Hall of Fame, and the Massachusetts Academy of Sciences. She is a fellow of the American Academy of Arts and Sciences and the Association for Computing Machinery, and a charter fellow of the National Academy of Inventors. She received the ACM Turing Award in 2009, the IEEE Von Neumann medal in 2004, the IEEE Pioneer Award in 2018, a lifetime achievement award from the Society of Women Engineers in 1996, the ACM SIGPLAN Programming Language Achievement Award in 2008, the ACM Sigops Hall of fame award in 2012, and the Stanford Hero of Engineering award in 2019.

United-states , Massachusetts , American , Barbara-liskov , Blaine-rivas , Gurdip-singh , Henrya-kautz , Sigops-hall , National-inventors-hall , American-academy-of-arts , Association-for-computing-machinery , Institute-professor