学术报告
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模表示论新进展题目:模表示论新进展报告人:张继平教授(杰青、北京大学国际数学中心执行副主任)时间:2017年4月6日 16:00-17:00地点:致远楼107室报告人简介:张继平,北京大学教授、博士生导师、国家杰出青年基金获得者、长江学者奖励计划特聘教授、国家级有突出贡献的中青年专家、全国优秀科技工作者、全国五一劳动奖章获得者、北京市十大杰出青年,他曾获国家自然科学奖、教育部科技进步一等奖、“求是”杰出青年学者奖、中国青年科学家...张继平教授致远楼107室2017年4月6日 16:00-17:00
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Translation Lengths of Parabolic Isometries of CAT(0) Spaces and Their Applic...In this talk we will give a sufficient and necessary condition on parabolic isometries of positive translation lengths on complete visibility CAT(0) spaces. One consequence is that each parabolic isometry of a complete simply connected visibility manifold of nonpositive sectional curvature has zero translation length. Applications on the geometry of open negatively curved manifolds will also be discussedDr Yunhui Wu致远楼1024月5日 16:00-17:00
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Some Progress in Multiscale Finite Element Methods with Porous Media Applicat...There are many fundamental and practical problems involving a wide range of length scales. The multiscale feature leads to great challenges for computation. Multiscale finite element method (MsFEM) is one of efficient approaches to solve the multiscale problems. The talk is devoted to presenting some progress in MsFEM with porous media application. To enhance the applicability and flexibility, we particularly introduce a least-squares mixed generalized MsFEM. Some numerical results are presented for flows in porous media姜立建 教授致远楼107室2017年3月16日 16:00
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Optimal Dividend and Investment Problems under Sparre Andersen Model题目:Optimal Dividend and Investment Problems under Sparre Andersen Model报告人:柏丽华 博士 (南开大学)时间:2017年3月13日(星期一)下午3:00—4:00地点:致远楼102室欢迎各位参加柏丽华 博士致远楼102室2017年3月13日(星期一) 下午3:00—4:00
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SYZ Transformation and Mirror SymmetrySYZ transformation is a geometric way to understand mirror symmetry , which is of great importance in geometry and physics. In this talk, Professor Conan Leung will discuss the history and his recent work on this “hot” topic.SYZ Transformation and Mirror Symmetry致远楼107室2月18日 (周六) 14:00-15:00
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A Two-component Generalization of the Degasperis-Precesi Equation and Its Sho...We proposed a two-component generalization of the the Degasperis-Precesi equation. Firstly, under a pseudo 3-reduction, we have shown that the two-component reduced Ostrovsky equation can be reduced from an extended BKP hierarchy through a hodograph transformation. Its bilinear form and N-soliton solution in terms of pfaffians are constructed. One- and two-soliton solutions are presented. Moreover, we give a two-component generalization of the Degasperis-Precesi equation its Lax pair.冯宝峰 教授致远楼107室2016年1月11日 (周三)15:30-17:3 0
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Symmetric Structure for the Endomorphisms of Projective-injective Modules in ...For any singular dominant integral weight $/lambda$ of a complex simple Lie algebra $/mathfrak{g}$, we show that all the indecomposable projective-injective modules in any fixed block of $/mathcal{O}_/lambda^/mathfrak{p}$ have the same Loewy lengths and the endomorphism of any projective-injective module in $/mathcal{O}^/mathfrak{p}_/lambda$ has a symmetric algebra structure, and it is equipped with a homogeneous non-degenerate associative bilinear form of degree equal to one minus that common Loewy length. This generalizes earlier work of Mazorchuk and Stroppel and confirms a conjecture of Khovanov. This talk is based on a joint work with Ngau Lam.胡峻教授致远楼107室2017年1月9日 16:00-17:00
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Design and Development of a Hand Gesture Recognition System for UAV ControlThis presentation introduces the design and development of a hand gesture recognition system for UAV control in which 13 gestures are used. To train the system to recognize these gestures, we use hand skeleton data collected from a Leap Motion device. Adaptive Naïve Bayes Classifier (ANBC) and Support Vector Machines (SVM) are selected as base learning algorithms. An ensemble method is designed to improve the recognition accuracy based on the two selected classifiers. At implementation level, we developed three ROS (Robot Operating System) nodes to accomplish Feature Extraction, Gesture Recognition, and UAV Control functions.王加存教授致远楼102室2017年1月4日(周三)上午10:00