Instructors/Speakers Prof. Jie SHEN Professor of Department of Mathematics and Director of Center for Computational and Applied Mathematics Purdue University U.S.A. Abstract We present in this talk the scalar auxiliary variable (SAV) approach to deal with nonlinear terms in a large class of complex dissipative/conservative systems. In particular, for gradient flows driven by a free energy, it leads to linear and unconditionally energy stable second-order (extendable to higher-orders) schemes which only require solving decoupled linear equations with constant coefficients. Hence, these schemes are extremely efficient as well as accurate, which are also validated by ample numerical results. We shall present a convergence and error analysis under mild assumptions on the nonlinear free energy, and discuss applications of the SAV approach ...
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Instructors/Speakers Prof. Mark Ming-Cheng CHENG Associate Professor of Department of Electrical and Computer Engineering Biomedical Engineering and Director of Nanofabrication Core (nFab) Wayne State University U.S.A Abstract In this talk, we will discuss two telemetric sensing principles for the wireless monitoring of physiological parameters with potential advantages of improved accuracy and sensitivity. We propose self-powered wireless biosensors based on graphene radio-frequency (RF) components, which have advantages of transparent, flexible, and monolithically integrated on biocompatible soft substrate. All-graphene wireless sensors is envisioned to consist of optically transparent graphene antenna and biosensor, which receives the fundamental tone and retransmits the sensed signal at its second harmonic, thus allowing low-noise sensing in a severe interference/clutter background. Pressure is also an important part of ... |
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Instructors/Speakers Prof. Yu LUO Professor the School of Microelectronics Tianjin University China Abstract Cross Polarization Discrimination is a key factor to evaluate the performance of base station antennas. In this talk, two novel methods to design ±45° dual-polarized base-station antennas with enhanced cross polarization ratio (XPD) are presented. The first method to improve XPD is by addition of four horizontal parasitic elements around a simple ±45° dual-polarized base-station antenna. The second method is by addition of four vertical parasitic elements between a simple ±45° dual-polarized base-station antenna and a reflective ground. Two ±45° dual-polarized base-station antennas were designed, designed, fabricated and measured to verify the two proposed methods. In addition, the proposed methods can also be employed to wide axial ... |
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https://www.fst.um.edu.mo/wp-content/uploads/2019/05/sem20190528_01.jpg |
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Instructors/Speakers Prof. Daojian CHENG Professor of Department of Chemical Engineering Beijing University of Chemical and Technology China Abstract In this talk, Prof. Cheng will present an overview of some exciting results from our recently proposed structure descriptor, mapping the quantitative relationship between intrinsic structural feature and catalytic performance for transition metal catalysis, as well as its application in the high-throughput screening on catalyst and rational construction of catalytic sites. The central concept of our structure descriptor contains following points: (1) The features parameters inside structure descriptor have to be unique in representing electronic and geometric structures of a catalytic site. (2) The features parameters inside structure descriptor must be easily computed, experimentally quantified or readily available physical properties from databases, ... |
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