DAAD校友聚焦研讨会 “数学和应用数学” 暨
中国留德学人数学与应用数学学会2013年学术交流年会
(Alumni Fokus: Fachseminar Mathematik und ihre Anwendungen &
GCMA Jahrestagung 2013)
会议通知
地点：德国，斯图加特(Stuttgart)
日期：2013年11月23至24日
主办：
德意志学术交流中心（DAAD，www.daad.de）
中国留德学人数学与应用数学学会（GCMA，www.gcma-ev.de）
("Stuttgart Schlossplatz Nacht new.jpg" von Fanndian, bearbeitet von Pro2; Lizenz: CC BY-SA 3.0)
中文版会议报名通知 （PDF），
Anzeige auf Deutsch （PDF）
随着德中两国教育文化交流的进一步加强，越来越多的中国学生学者顺利完成了在德国的学业研究并成功开启了自己的事业之门。在德意志学术交流中心《校友聚焦》框架下，德意志学术交流中心(DAAD)和中国留德学人数学与应用数学学会(GCMA)将在德国斯图加特联合举办“数学和应用数学”专业研讨会。本次会议将特别邀请留德校友、行业专家学者和在德国大学、科研机构和企业工作的人士进行专题讨论。会议组委会热诚邀请广大留德专家、学者、学生、企业界人士及各界朋友踊跃报名参加。
面向对象
所有在德国高校就读或者已经毕业的中国学生，在德国做访问交流的学生及学者。
报名
报名从即日起到2013年11月15日，共40个名额，报满为止。
请在DAAD中国留德校友在线数据库进行报名，具体报名方式见附录A。
报告
报告的语言是中文。特邀报告和一般报告的时间分别为30分钟和25分钟，其中包含5分钟讨论时间。报告的投影片可用中文、德文或英文书写。推荐使用微软PowerPoint。会议将提供视频投影仪。
投稿
申请做学术报告者请提交一份1至3页的中文、德文或英语的摘要或论文原文。申请介绍工作经验者请提交工作经验谈的简介或提纲。投稿者请于10月31日之前把上述内容以微软 Word DOC 的形式电邮给陈琪博士：chenqi@ira.uka.de。报告一经录用后，投稿者将被要求提供一份简短的个人介绍。报告摘要将在会议录及两家主办者网页上发表。
会议日程
学术报告摘要见附录B。
会议和住宿地点
Tagungshotel Commundo Stuttgart
Universitätsstr. 34, 70569 Stuttgart
补助
本次会议给所有参与者免费提供茶歇和饮料、23日到24日一晚的住宿（带早餐）和11月23日晚上的共同晚餐。报告者在德国境内的交通费由DAAD支付。对于不做报告的与会的数学学会的会员，数学学会将按周末票的标准进行交通费补助。
赞助
中国留德学人数学与应用数学学会欢迎各种形式的赞助。有意赞助者请与学会主席陈琪博士(chenqi@ira.uka.de)联系。一旦收到赞助款项，我们立即给您寄去可以退税的收据。
德意志学术交流中心
中国留德学人数学与应用数学学会理事会
2013年11月5日
附录A：报名说明 校友聚焦 研讨会 "数学和应用数学"
大会共申请到40个参会名额，名额有限，优先考虑申请作报告的参会者。报名从即日起到2013年11月15日或报满为止。
- 本次活动属于DAAD留德校友聚焦系列活动，请务必在留德校友数据库注册，请进入网页 http://www.daad.org.cn/alumni/online-datenbank。
- 如果您已经是校友数据库的成员，请您使用您的邮件或者注册ID登陆，选择本次活动进行报名。
- 如果您尚未注册，请您首先注册成为“中国留德校友网络”的会员，请注意在“状态Status”选项请选择“留德校友(目前仍在海外)Deutschland Alumni im Ausland”或 “留德校友(目前以返回中国) Deutschland Alumni in China”。
- 注册成功后，请登录填写个人信息，联系方式等信息。
- 完成个人信息填写以后，请点击"报名活动"，选择本次活动〈校友聚焦“数学和应用数学”专业研讨会〉并确定。
- 报名成功之后，再次点击此活动会看到系统提示“成功报名”。
- 报名过程中如遇到问题请联系赵潇先生(dach@daad.de) Tel.: 0228-882-8701。
- 有意做报告者，请将报告题目及摘要发送给陈琪博士(chenqi@ira.uka.de)。
- 场地限制，未报名者无法入场。
附录B：学术报告摘要
陈学农 博士，研究员 (KIT)
Solitary waves are a particular phenomenon in the nonlinear physical world, which attract significant attentions from the mathematical side. It is quite accident this phenomenon goes through my academic life. In this talk I would like introduce three examples that I’ve researched in quite different fields, namely (i) chaotic soliton motion; (ii) waveless ship form generated by a two-soliton solution; (iii) travelling wave reactor. I would like not only to present the results, but also necessary background information.
张飞驰 (KIT)
报告摘要
赵毓斌 (FU Berlin)
费希尔信息矩阵是信息论和几何信息学中重要的公式之一。本文将通过费希尔矩阵描述在二维空间定位中的空间误差分布，进而分析其在二维空间的特性，指出了采用费希尔矩阵分析最优估计器性能的局限。根据这些特性，本文引入三维空间因素——相对高度差，对费希尔矩阵进行修正，使之能更准确的分析二维空间定位算法。最后，我们通过空间误差分布的分析方法，比较了不同定位算法的估计的准确度，并对其鲁棒性进行了分析。
阳媛 (FU Berlin)
As the prevalent of mobile devices (i.e., smart phone, tablet and PDA),mobile target positioning or LBS (Location Based Service) have attracted a lot of attention lately.Various positioning techniques have be investigated,i.e., GPS, cellular network positioning, radio positinging by sensor networks, WLAN, computer-vision systems, or map matching, etc. All such positining techniques involve geometric information in nature.
Geometric information provides a straightforward solution for localization. This paper reviews some positioning algorithms which empore the geometric information. Furthermore, we propose a geometric performance evauation using two dementional spatial distribution analysis based on Monte Carlo simulations.
Keywords : Geometric localization, the NLOS error, Monte Carlo simulation, geometric performance evaluation
冼军 教授 (中山大学)
报告摘要
陈浩 (FU Berlin)
The talk consists of two parts:
The first part is dedicated to Koebe--Andreev--Thurston’s circle packing theorem : any planar graph can be realized by the tangency relations of a circle packing. After reviewing some history, I will point out the relation between circles packings and conformal maps, which leads to applications in computer modelling.
In the second part, I will go to higher dimensions yet retreat to spheres of same radius, and talk about packings of n-dimensional spheres of same radius. I will tell the legend of kissing numbers and Kepler conjecture. Studies on related problems, though purely theoretic, find applications in coding theory.
In the last few minutes, I will mention the topic of my own research: packing of spheres of various radius.
邱予嘉 (Uni. Heidelberg)
报告摘要
张耀坤 (KIT)
耳蜗切开术是人工耳蜗植入手术的重要步骤。在手术过程中，必须在保证耳蜗的鼓管内膜不受损伤的情况下将其上所有的骨组织切除。相比传统的手术工具如钻、锯等，短脉冲二氧化碳激光可以不施加外力的情况下进行手术，同时也更加精确。但是在手术中如何实时探测鼓管内膜的位置在以前的工作中没有得到有效的解决。本文介绍了利用光学干涉断层扫描技术 OCT(optical coherence tomography) 对耳蜗切开过程进行监测的方法，实现对二氧化碳激光进行闭环控制，从而使切开过程自动化，在提高手术成功率的同时降低手术医生的负担和风险。
Cochleostomy is a vital step of cochlea implantation, during which the cochlear lining membrane has to be reserved while a complete removal of the overlaying bone tissue is required. Compared wich conventional mechanical tools like burr or saw, a short-pulsed CO2 laser enables a bone ablation without any mechanical stress to the delicate structures and a higher accuracy. However, how to detect the position of the cochlear lining membrane intra-operatively is still an open question. This work aims on monitoring the laser-cochleostomy using OCT (optical coherence tomography) and establish a closed-loop control of the CO2 laser. An automatic procedure of ablation is realized, which increases the patient safety and reduces the risk of the surgery simultaneously.
杨一帆 (Uni. Heidelberg)
The evolution of plaques is one of the main causes for the blockage of arteries. This can lead to ischaemic brain or myocardial infarctions as well as other cardiovascular diseases. Possible biochemical and biomechanical processes contribute to the development of plaque growth and rupture. The main biochemical processes are the penetration of monocytes and the accumulation of foam cells in the vessel wall, leading to the formation and growth of plaques. The biomechanical forces can be measured by observing stresses in the blood flow and the vessel wall, which may lead to the rupture of plaques.
In this talk, we formulate an appropriate model to describe the evolution of plaques. The model consists of both the interaction between the blood flow and the vessel wall, and the growth of plaques due to the penetration of monocytes from the blood flow into the vessel wall. The Navier-Stokes equations and the elastic structure equations are used to describe the dynamics of fluid (blood flow) and the mechanics of structure (vessel wall). The motion of monocytes is described by the convection-diffusion-reaction equation, coupled with an equation for the accumulation of foam cells. Finally the metric of growth is introduced to accurately determine the stress tensor, and its evolution equation is derived. The variational formulation of the model is transformed into the ALE (Arbitrary Lagrangian-Eulerian) formulation, and all the equations are rewritten in the fixed domain. Temporal discretization is achieved with finite differences and spatial discretization is based on the Galerkin finite element method. The nonlinear systems are linearized and solved by the Newton method.
Based on the model and the numerical methods above, numerical simulations are performed by using the software Gascoigne. The obtained numerical results make an agreement with the observation, and support the assumption that the penetration of monocytes and the accumulation of foam cells lead to the formation and growth of plaques, and that the evolution of plaques induces the increase of stresses in the vessel wall, which is an indicator of plaque rupture.
李厚森 (Uni. of Göttingen and Max Planck Institute for Biophysical Chemistry)
Imaging speed is crucial in real-time magnetic resonance imaging (MRI) studies of physiological processes, such as cardiovascular dynamics. Because of physical and physiological limitations, most methods generally shorten the measuring time by acquiring less data than would normally be needed according to the sampling theorem. The goal of our research is to reconstruct a serial stream of images with high spatial and temporal resolution from such undersampled data. The methodology we adopt is to implicitly increase the sampling rate by incorporating a “self-navigating” estimation of the motion of objects. In the talk, we will present some basic concepts, strategies and challenges in image reconstruction as well as our recent developments.
Keywords : Statistical Inverse Problems, Aggregation Estimation, Medical Imaging.