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Date
( Summer 2011 )
Category Seminar Info
2010/07/14 Vision, Graphics, and Robotics Place: ENGMC 437
Time: 15:00 - 16:00
Speaker: Wenping Wang
Affiliation: Department of Computer Science, The University of Hong Kong
Area: Computer Graphics
Title: Computation and Applications of Centroidal Voronoi Tessellations
Abstract: Centroidal Voronoi Tessellation (CVT) has been receiving much research interest due to its widespread applications in science and engineering. After a brief review of related concepts and previous works, I shall discuss our recent results on the computation and applications of CVT: 1) A quasi-Newton method for computing CVT; 2) CVT for high quality mesh generation; 3) extension of CVT to circle packing; 4) Modeling minimal surfaces using CVT. If time permits, I shall also present a comparative study on CVT and ODT--optimal Delaunay triangulation, which is a new, promising alternative to CVT for tetrahedral mesh generation.
2010/05/14 CQIL - Cryptography and Quantum Information Place: McConnell 103
Time: 11:00 - 12:00
Speaker: Min-Hsiu Hsieh
Affiliation: ERATO-SORST
Title: Universal coding for transmission of private information over classical-quantum channels
Abstract: We consider the transimission of private classical information through a (c->qq) channel from Alice to Bob and Eve, and prove the existence of a universal code. The only assumption in the coding theorem is that Alice and Bob have prior knowledge of the input distribution on the set of classical symbols, and of bounds on the corresponding Holevo quantities for the channel from Alice to Bob and the channel from Alice to Eve. Our proof can be essentially viewed as a universal version of a cornerstone of information theory, namely the packing lemma and covering lemma. Biography of Speaker:

Min-Hsiu Hsieh studied electrical engineering with an emphasis in wireless communications at National Taiwan University, Taiwan, where he received the B.S. degree in 1999 and M.S. degree in 2001. He received the Ph.D. degree in electrical engineering from the University of Southern California, Los Angeles, California, USA, in 2008. He is currently a researcher at the ERATO-SORST Quantum Computation and Information Project, Japan Science and Technology Agency, Tokyo, Japan. His research interests are in quantum error correction and quantum Shannon theory.