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报告题目：Unveiling the Multistability of Complex Biological Systems: A New Horizon in the Solution Landscape报 告 人：张 磊 教授报告时间：2025年10月11日 上午10:30-11:30报告地点：上海理工大学 卓越楼810会议室报告摘要：Biological systems are often characterized by nonlinear interactions, feedback loops, and the ability to adapt and evolve, making them challenging to study and model. The Waddington landscape has been widely applied to many biological systems. A long standing problem in computational mathematics is how to search for the entire family tree of possible stationary states without unwanted random guesses? Here we introduce a novel concept “Solution Landscape”, which is a pathway map consisting of all stationary points and their connections. We develop a generic and efficient saddle dynamics method to construct the solution landscape, which not only identifies all possible stationary states, but also reveals the connections between them. As illustrations, we apply the solution landscape approach to study two problems: One is to investigate the solution landscape of reaction-diffusion systems, which reveals a nonlinear mechanism for pattern formation beyond Turing instability, and the other one is construction of a blueprint of cell fate decision via Hyper Solution Landscape. 报告人简介: 张磊，北京大学北京国际数学研究中心博雅特聘教授，定量生物学中心、国际机器学习中心PI。2001年本科毕业于北京大学，2004年在中科院数学与系统科学研究院获硕士学位，2008年在美国宾州州立大学获博士学位。研究领域为计算和应用数学、交叉科学，包括稀有事件与解景观的算法与应用，数学与生命科学交叉，计算材料科学等。研究成果在PRL、PNAS、Acta Numerica、Cell Systems, Nature Communications, Science Advances、SIAM系列期刊发表。(曾)主持国家基金委创新研究群体、国家杰出青年科学基金、科技部重点研发专项、基金委原创探索计划、基金委优秀青年科学基金、中组部高层次青年人才计划等项目。2027年国际工业与应用数学大会（ICIAM）大会邀请报告人，曾获第二届王选杰出青年学者奖、英国皇家学会牛顿高级学者，目前担任“计算数学”副主编，SIAM J. Appl. Math, Science China Mathematics, CSIAM Trans. Appl. Math，The Innovation, Quantitative Biology等8个国内外期刊的编委。上海理工大学系统科学高水平优势学科、理学院数学与生命科学交叉研究中心联合主办
2025-10-07
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报告题目：A story of analytical scattering theories报 告 人：Prof. Gérard Gouesbet报告时间：2025年9月24日下午2:30-3:30报告地点：上海理工大学卓越楼810会议室报告摘要：We shall present a story of analytical light scattering theories, namely generalized Lorenz-Mie theories (GLMTs) for various kinds of particles, since the first paper devoted to the issue in 1982. After the GLMT stricto sensu devoted to the interaction of laser beams with homogenous Mie particles, other GLMTs have been studied by the author for multilayer particles, aggregates and assemblies of spheres, spheres with internal spherical inclusions, cylindrical particles with circular and elliptical cross-sections, and spheroids. In such theories, the illuminating beams are encoded in sets of coefficients, named beam shape coefficients (BSCs), which may be evaluated using various methods. Applications concerned optical particle characterization (the original motivation), calculations of optical forces and torques (mechanical effects of light), internal resonances (whispering-gallery modes, morphology-dependence resonances, plasmons), among others. A recent topic concerns the transfer of results obtained in the framework of the GLMT to acoustical (more generally scalar) scatterings, including the design of a scalar localized approximation procedure to the evaluation of acoustical (more generally scalar) beam shape coefficients.报告人简介: Gouesbet教授，目前是诺曼底大学/国家科学研究中心/国家应用科学研究所名誉教授。Gouesbet教授是广义洛伦兹米理论的创始人，在国际知名学术期刊发表了400多篇论文和300多篇会议论文，被引量达18500余次(Google Scholar)。他和Gréhan教授合作撰写的《广义洛伦兹米理论》在2023年发布了第三版。Gouesbet教授曾在欧洲热力学中心管理委员会(CERET)、美国科学促进会、美国航空航天学会(AIAA)、美国物理学会(APS)、法国气溶胶研究协会(ASFERA)、欧洲物理学会(EPS)、法国燃烧研究所委员会、中法科学技术研究会、纽约科学院、美国光学学会(OSA)等学术组织兼职，并承担了多个国际期刊的(副)主编和客座主编。他的研究领域涉及：光散射理论、光学粒子表征方法、高温气体动力学理论与等离子体物理、湍流和两相流建模、两相流不稳定性、混沌理论，非线性动力系统等。
2025-09-19
