Speaker: Prof. Alberto Bressan EberlyVenue: Lecture Hall, 4th Floor, Run Run Shaw Business Administration BuildingAbstract: In 2009 J.Biello and J.Hunter derived a balance law modeling nonlinear waves with constant frequency,  obtained from  Burgers' equation by adding the Hilbert transform as a sourceterm.  Recent work has established the global existence of solutions in the space  L^2(R), and a partial result on uniqueness. This talk will also describe the construction of piecewise smooth solutions, locally in time, providing a detailed analysis of the solution profile in a neighborhood of each shock. Various related open problems will be discussed.

Speaker: Prof. Christopher D.SoggeVenue: Lecture Hall, 4th Floor, Run Run Shaw Business Administration BuildingAbstract: Many problems in harmonic analysis involve the wave equation, and one can use Fourier analysis and Fourier integral operators to solve wave equations. We shall discuss several of these problems, including spherical maximal estimates, local smoothing bounds and Kakeya problems. We shall also go over recent decoupling estimates of Bourgain and Demeter that were inspired by the work of Wolff on regularity estimates for the wave equation. We shall also show how one can use Fourier analysis to solve critical nonlinear wave equations.

Title:Venue: A203, ZJE Building, International CampusSpeaker: Prof. Jinsong LiJinsong Li is a professor and director of State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences. He obtained his PhD from Institute of Zoology, Chinese Academy of Sciences, in 2002 and followed by postdoctoral training at Rockefeller University before joining SIBCB in 2007. His research is to establish high-efficient reprogramming strategies, generate high-quality reprogrammed cells, as well as to elucidate molecular mechanism of epigenetic reprogramming. He has made fundamental contributions to the establishment of androgenetic haploid embryonic stem cells (“artificial spermatids”) and haploid cell-mediated semi-cloned technology. Dr. Li has published extensively in numerous peer-reviewed journals including Cell, Nature, Cell Stem Cell, PNAS, Nat Cell Biol and Cell Res.  Scan to sign up and for more information:

Speaker: Prof. Yves Perriard， École Polytechnique Fédérale de Lausanne, EPFLVenue: Room 405, No. 2 Teaching BuildingAbstract: Whenever something moves in the human body, our muscles do the work. However, while today it is part of everyday clinical practice to replace joints and bones with artificial parts, reconstruction medicine still has great difficulties finding a suitable replacement for damaged or destroyed muscles. There is one muscle in particular whose function is vital and is the subject of several studies, but without convincing results: the heart. Other muscles of the body actually share mechanical similarities with the heart, including the sphincter muscle, which, if damaged, can cause urinary incontinence. Facial muscles also share such similarities and must be replaced after an accident or injury. Although these muscles do not play a vital role in the body, they remain extremely important for patients’ quality of life, for example a well-functioning sphincter muscle is critical in order to avoid unpleasant side effects such as needing to wear diapers. The parallels between muscle types could allow the development of universal electromechanical multifunctional actuators. Within the new ?Center for Artificial Muscles?, EPFL, in cooperation with its partners in heart surgery - University of Bern and Reconstructive Medicine - University of Zürich, aims to become the world’s leading reference for the development and clinical transfer of a brand new technological approach for artificial muscles in the human body.The proposed keynote intends to show some examples realized in this new center together with multi-disciplinary projects linked woth industry.About the speaker:Yves Perriard obtained his Master in ‘Microengineering’ from EPFL in 1989 and his PhD form the Electrical Department in 1992. He became cofounder of the company Micro-Beam SA and had the lead of the company until 1998 doing special electric drives. In 1999 he joined EPFL as Senior Lecturer and in 2003 he was appointed Titular Professor and leader of the Integrated Actuators Laboratory. In 2009 he is also appointed Vice-Director of the Microengineering Institute EPFL Neuch?tel. Senior member IEEE and Member EPE, he is also vice-president of the EPE (European Power Electronics) society board in Brussels.Yves Perriard is interested in innovating, analyzing and creating new actuators associated with their electronic devices.  The multi-disciplinary work of his research makes him strongly in contact with industries in Switzerland and abroad. Yves Perriard has published over 180 papers, 5 patents and is co-author of one book. He is associate editor of several journals. Teacher at the Bachelor and Master level, he received twice the best teacher award of the Engineering Faculty in 2005 and 2007. More information can be found on the Integrated Actuators Laboratory web site http://lai.epfl.ch. In 2018, he launched a brand new center at EPFL on artificial muscles thanks to a donation of the Werner Siemens Foundation.

Venue: Lecture Hall, Anzhong Building, Zijingang CampusAbout the speaker:Enge Wang is the Professor of Physics, Peking University. He is also the Chairman of Advisor Board of Institute of Physics and the Honorary Director of Kavli Institute of Theoretical Sciences, Chinese Academy of Sciences. He was the Director of the Institute of Physics, the President of Peking University, and the Vice President of Chinese Academy of Sciences from 1999 to 2017.  He was selected as the Vice President of the International Union of Pure and Applied Physics (IUPAP) in 2017, the International Councilor of American Physical Society (APS) in 2018, and the Chairman of Global Cooperation Alliance of Science Centers (GCASC) in 2019. He researches condensed matter physics; the approach is a combination of theoretical and experimental study of light-element materials, such as anomalous behaviors of water under confinement.Abstract: Despite water being a ubiquitous substance, it is surprising that some basic questions are still debated. Here using a combination of experimental (cryogenic STM/AFM) and theoretical (first-principle electronic structures and molecular dynamics) methods, we systematically studied the unusual structure and dynamics of water interface at atomic scale, and the sub-molecular imagining, clustering, proton transfer and hydration number of water on salt. An imaging mechanism based on a subtle control over the tip-molecule coupling is proposed, which allows a sub-molecular level resolution for water moleculae. Full quantum effect sheds light on our understanding of water nature on surface.

Speaker: Prof. Pat Wheeler,  University of NottinghamVenue: Room 201, Electric Engineering Building, Yuquan Campus  Abstract: As an electrical engineer the push for the electrification of transportation presents exciting technical challenges, particularly in terms of motor drives, power electronics and electrical energy storage. This presentation will explore the state of the art and identify the roadmaps for future technology requirements in this application area.  The presentation will use examples for the ongoing industrially linked research work at the University of Nottingham, including electric superbikes, electric propulsion for aeroplanes and future electric cars.About the speaker:Prof Pat Wheeler received his BEng and PhD degree from the University of Bristol, UK in 1990 and 1994 respectively. In 1993 he moved to the University of Nottingham and worked as a research assistant in the Department of Electrical and Electronic Engineering. Since January 2008 he has been a Full Professor. His research interests include Power Conversion for industrial, aerospace and energy applications. He has published over 600 academic publications in leading international conferences and journals.