- 摘要
新冠肺炎疫情发生以来,中国数学会发挥学科优势,组建研究团队开展建模和预测等工作,为切实提高疫情防控的科学性和有效性提供专业支持。
学会理事、陕西师范大学教授唐三一联合陕西师范大学生物数学团队、西安交通大学生物数学团队以及加拿大吴建宏教授团队,建立包括密切跟踪隔离的封城效果检测的传播动力学模型,该模型基于1月22日24时前的数据,实现模型辨识和拟合。研究成果已完成并投稿。同时,团队对未来一周的疫情进行预测,为国家疾病预防控制部门早决策早预警提供依据。
学会理事、学会生物数学专业委员会主任、北京建筑大学教授崔景安带领北京建筑大学生物数学团队,第一时间参与了武汉新型冠状病毒数学建模与预测工作。模型结果经过中国疾控中心专家讨论后形成报告,为国家卫健委等相关部门的决策提供参考。
学会理事、东北师范大学教授范猛自疫情暴发开始,密切关注疫情发展动态和学界研究动态,他所带领的东北师范大学生物数学研究团队联合加拿大约克大学(York University)朱怀平教授团队以及东北地区部分生物数学学者,基于新型冠状病毒的流行病学特征及传播现状,应用动力学建模方法探究延迟确诊对疾病传播的影响,预测疾病发展趋势,并评估干预措施的有效性。特别是对“封城闭户”进行了比较深入的研究,拟合当前疫情实际,相关研究结果已提交给长春市疾病预防与控制中心,为疫情防控提供参考。
学会会员、北京大学公共卫生学院生物统计系主任周晓华教授的研究团队综合利用流行病学、病毒基因、交通流量等数据信息,从数学模型和统计模型相结合的角度,对本次新型冠状病毒疫情的发生和发展过程进行深入研究。
1月24日,该队完成武汉市新型冠状病毒潜在感染人数的估计,结果发表于《中国疾病预防控制中心周报(英文版)》(China CDC Weekly);1月29日,利用新完成的模型和更新的数据对未来3天的病例数进行预测,预测结果得到了验证;2月3日,估计出传染期时长的分布中位数和均值;2月8日,估算出传染病控制再生数,发现全国各地区的控制再生数都处于下降趋势,说明防控措施取得了一定成效。该团队还提出随机动力学模型,可用于刻画潜伏期、无症状传染、有症状传染、隔离期、治疗、康复等复杂状态,应用于预测人群在不同城市间的转移等。
学会监事、复旦大学上海市现代应用数学重点实验室主任程晋带领由复旦大学、浙江大学、上海财经大学的学者组成的研究团队,基于全国各级卫健委每日公布的累计确诊数和治愈数等数据,提出一类基于时滞动力学系统的新传染病动力学模型。特别是针对此次新冠肺炎疫情中病毒潜伏期和治疗周期上体现的新特征,该模型预测的疫情发展与公布数据相吻合。同时,研究团队还以上海市为例,专门模拟了在不同数量输入性传染源情况下对上海未来确诊人数的影响。
学会会员肖燕妮所带领的西安交通大学数学与统计学院生物数学团队,在2003年成功预测SARS流行趋势的基础上,与陕西师范大学生物数学团队、加拿大吴建宏教授团队合作,开展新型冠状病毒肺炎发展趋势和未来传播风险的研究,对疫情发展进行精准的短期预测。
- 摘要
新型冠状病毒肺炎疫情的发生和蔓延,对我国经济发展产生了一定的冲击。为改善受到疫情影响的经济运行状况,为政府部门的经济决策提供参考,中国数学会会员单位中国科学院数学与系统科学研究院(以下简称数学院)启动新型冠状病毒感染肺炎对我国经济的影响的若干研究课题。
数学院研究员汪寿阳领导的课题组与中国科学院预测科学研究中心、中国科学院大学、中国科学院虚拟经济与数据科学研究中心合作,研究新型冠状病毒疫情对我国经济的影响及相应的政策建议,包括
[1]新型冠状病毒感染肺炎疫情对金融市场的影响分析与对策建议(2020年2月2日)
[2]新型冠状病毒感染的肺炎疫情短期内对中国经济造成较大冲击,但对全年经济的影响有限(2020年2月5日)
[3]疫情高峰拐点的预测与政策建议(2020年2月5日)
[4]新型冠状病毒感染肺炎疫情对零售行业的影响分析与对策建议(2020年2月6日)
[5]疫情对我国农村经济的主要影响估算与对策建议(2020年2月6日)
[6]查明疫情导致的民众恐慌心理的深层次原因,采取有效措施,防范元宵节前后疫区的麻木、焦虑情绪(2020年2月6日)
[7]尽快启动研究专项,科学研判和积极应对新冠疫情造成的社会经济影响(2020年2月8 日)
[8]新冠肺炎疫情对交通运输业的冲击影响在2月份最大,需求将在下半年得到释放(2020 年2月8日)
[9]新冠肺炎疫情短期内对农业生产影响相对较小,但对农民收入的影响不容忽视(2020年 2月8日)
[10]积极统筹安排,舒缓疫情对中小企业冲击(2020年2月8日)
[11]新冠肺炎疫情短期内对我国产业链对外转移的影响有限,但长期影响需要关注(2020 年2月9日)
[12]著名经济学家陈锡康预测今年一季度我国经济为零增长,疫情过后中国经济将强劲增长,三季度增速有望达到8%左右(2020年2月11日)
[13]在打赢抗击新冠肺炎战役中,应积极抢占国际传播阵地,主动发出中国声音(2020年 2月11日)
[14]新冠肺炎疫情短期内对我国房地产市场造成一定冲击,全年市场走势仍将趋稳(2020年2月11日)
[15]稳健精准施策保持房地产市场平稳运行,积极应对特殊时期经济下行风险与挑战(2020年2月11日)
[16]新冠肺炎疫情对2020年进出口形势的影响分析与对策建议(2020年2月12日)
这些政策研究报告内容涉及疫情对金融市场、农业生产、中小企业、房地产、交通与旅游业、零售行业、区域经济、进出口等行业的影响。目前,已经上报的十多篇报告,部分得到高层领导批示,部分被中共中央办公厅等部门采纳,相关政策建议被政策制定部门采纳。
蒋滨雁
- 摘要
数据科学及分析是一门跨领域学科,融合了数学,统计学及计算机科学的专业知识,从大量数据中采集有用的资讯,指导管理人员掌握隐藏在数据里的信息,并协助其制定科学的决策方案。本课程的设计揉合了当代统计学,优化方法和计算机科学的知识,旨在迎合社会需求,培育未来的数据分析专才。
专业课程方面,对学生可以根据自身的兴趣和能力灵活选择完成论文或是只修读规定学分的模式进行学习。具体申请信息如下:
课程结构
• 6门必修科(18个学分)及
• 4门选修课(12个学分)或
1门选修科(3个学分)及科研论文(9个学分)
必修科目
• Optimization Methods
• Principles of Data Science
• Deep Learning
• Advanced High Dimensional Data Analysis
• Big Data Computing
• Data Structures and Database Systems
选修科目
• Operations Research Methods
• Graphs and Networks
• Mathematical Modelling for Science and Technology
• Applied Linear Models
• Forecasting and Applied Time Series Analysis
• Optimal Control with Management Science Applications
• Scientific Computing
• Decision Analysis
• Investment Science
• Simulation and Risk Analysis
• Advanced Operations Research Methods
• Multi‐criteria Optimization
• Stochastic Optimization
• Advanced Topics in High Frequency Trading
• Dissertation
• Advanced Data Analytics
• Artificial Intelligence Concepts
入学要求
• 持有以下专业的本科学位:
数学,统计学,计算机科学, 信息科学,工程学,
科学或相关专业
• 申请人如持有其他本科学位,并具有数学和信息
科学相关的工作经验可获个别考虑
• 英语要求:
托福网试80分或笔试550分;或
雅思考试总分不低于6分
授课方式及修读年期
• 全日制--1.5年 (非香港本地申请人必须报读全日制)
• 兼读制-- 3年
授课语言:英语
• 毕业学分要求:30
• 收生人数: 50
• 授课地点: 香港
• 学费:每学分港币6,000 (修毕业硕士学位课程需完成30学分,全期学费为港币180,000)
查询
• 邮件:msc.dsa@polyu.edu.hk
• 网页:www.polyu.edu.hk/ama/pg/63027
juh380@psu.edu
- 摘要
The Workshop on Mathematical Machine Learning and Applications will be held by the Center for Computational Mathematics and Applications (CCMA) at Penn State on April 26-29, 2020, see https://ccma.math.psu.edu/2020workshop/
This workshop aims to bring together active scientists in the emerging field of data science to discuss recent advances in the study of algorithm development, theoretical analysis and applications of machine learning. Of particular interest are research topics concerned with the interplay between computer science, statistics, scientific computing, mathematical analysis, and applications of deep neural networks. As part of the meeting, Prof. George Karniadakis and Prof. Jinchao Xu will deliver introductory lectures on the mathematics of deep learning with junior participants as the target audiences.
Confirmed Invited Speakers Include:
Tyrus Berry (George Mason), Gregery T. Buzzard (Purdue), Eric Darve (Stanford), Bin Dong (PKU), Weinan E (Princeton), Dimitris Giannakis (Courant), C. Lee Giles (Penn State), John Harlim (Penn State), Thomas Y. Hou (Caltech), George Karniadakis (Brown), Stanley Osher (UCLA), Zuowei Shen (NUS), Zuoqiang Shi (Tsinghua), Aarti Singh (CMU), Andrew Stuart (Caltech), John Urschel (MIT), Rachel Ward (UT Austin), Lin Xiao (Microsoft).
More details on the registration information and possible travel support for junior participants (pending to NSF grant approval) is available at https://ccma.math.psu.edu/2020workshop/
mdelia@sandia.gov
- 摘要
It is our pleasure to announce the upcoming workshop Nonlocal Models -Analysis, Optimization and Implementation organized by the research training group Algorithmic Optimization (University of Trier) that will take place in July 27-30, 2020, at Trier University, Germany:
https://math.uni-trier.de/~ALOP_WS/
Confirmed Plenary Speakers:
Harbir Antil (George Mason University)
Marta D'Elia (Sandia National Laboratories)
Max Gunzburger (Florida State University)
Julio D. Rossi (Universidad de Buenos Aires)
Pablo Seleson (Oak Ridge National Laboratory)
The workshop will be focused on models which are nonlocal in space;including fractional equations as well as nonlocal models with a finite range of interactions. Aspects that shall be covered include:Optimization, Analysis and Stochastics, Implementation, Applications
Important Dates:
Registration: until May 15, 2020
Notification of acceptance: at latest May 31, 2020
asalgad1@utk.edu
- 摘要
We are pleased to announce that the 50th John H. Barrett MemorialLectures (Barrett Lectures) will be held from May 11-13, 2020 in the Department of Mathematics at the University of Tennessee, Knoxville,TN. The Barrett Lectures is one of the few long standing conferences in mathematics in the southeastern United States, held annually since 1970 with some exceptions. This year, the Barrett Lectures is organized under the theme of "A3N2M: Approximation, applications and analysis of nonlocal, nonlinear models", and the conference is composed of plenary, invited and contributed talks by experts in the application, approximation, and analysis of nonlocal models. Full details about speakers, registration and other information can be found in the website http://www.math.utk.edu/info/barrett/barrett-lectures2020/
Limited funds via the support of NSF and IMA, which we gratefully acknowledge, are available to defray travel expenses to registered participating graduate students, postdocs, early-career researchers,and/or members of groups that are under-represented in mathematics.
Please help advertise this event to your students, postdocs and early-career researchers in your department who might be interested in it. We would appreciate if you can post or send via email the attached conference flier to your faculty and graduate students. Please let us know if you have any questions.
- 摘要
A High-Order Accuracy Method for Solving the Fractional Diffusion Equations
Maohua Ran and Chengjian Zhang
Error Analysis of a Stabilized Finite Element Method for the Generalized Stokes Problem
Huoyuan Duan and Roger C.E. Tan
A New Approximation Algorithm for the Matching Distance in Multidimensional Persistence
Andrea Cerri and Patrizio Frosini
A C0 -Weak Galerkin Finite Element Method for the Two-Dimensional Navier-Stokes Equations in Stream-Function Formulation
Baiju Zhang , Yan Yang and Minfu Feng
Robust Inexact Alternating Optimization for Matrix Completion with Outliers
Ji Li , Jian-Feng Cai and Hongkai Zhao
A Balanced Oversampling Finite Element Method for Elliptic Problems with Observational Boundary Data
Zhiming Chen , Rui Tuo and Wenlong Zhang
Piecewise Sparse Recovery Via Piecewise Inverse Scale Space Algorithm with Deletion Rule
Yijun Zhong and Chongjun Li
- 摘要
Multigrid Methods for Time-Fractional Evolution Equations: A Numerical Study
Bangti Jin, Zhi Zhou
A High-Order Scheme for Fractional Ordinary Differential Equations with the Caputo–Fabrizio Derivative
Junying Cao, Ziqiang Wang, Chuanju Xu
Nonlocal Dynamics for Non-Gaussian Systems Arising in Biophysical Modeling
Xiaoli Chen, Jinqiao DuanPages
An Efficient Second-Order Convergent Scheme for One-Side Space Fractional Diffusion Equations with Variable Coefficients
Xue-lei Lin, Pin Lyu, Michael K. Ng, Seakweng Vong
Numerical Computations of Nonlocal Schr?dinger Equations on the Real Line
Yonggui Yan, Jiwei Zhang, Chunxiong Zheng
Higher Order Collocation Methods for Nonlocal Problems and Their Asymptotic Compatibility
Burak Aksoylu, Fatih Celiker, George A. Gazonas
Jacobi Collocation Methods for Solving Generalized Space-Fractional Burgers’ Equations
Qingqing Wu, Xiaoyan Zeng
- 摘要
Convergence Analysis of Finite Element Approximation for 3-D Magneto-Heating Coupling Model
Lixiu Wang , Changhui Yao and Zhimin Zhang
Long Time Stability of a Linearly Extrapolated Blended BDF Scheme for Multiphysics Flows
Aytekin ?Ibik , Fatma G. Eroglu and Songul Kaya
The Property of the Branch of Nonsingular Finite Element/Finite Volume Solutions to the Stationary
Navier-Stokes Equations and Its Application
Jian Li and Yinnian He
Conforming Harmonic Finite Elements on the Hsieh-Clough-Tocher Split of a Triangle
Tatyana Sorokina and Shangyou Zhang
Theoretical and Numerical Studies on Global Stability of Traveling Waves with Oscillations for
Time-Delayed Nonlocal Dispersion Equations?
Tianyuan Xu , Shanming Ji , Rui Huang , MingMei and Jingxue Yin
Analysis of a Second-Order Decoupled Time-Stepping Scheme for Transient Viscoelastic Flow
S. S. Ravindran
A Conforming Discontinuous Galerkin Finite Element Method
Xiu Ye and Shangyou Zhang
3D B2 Model for Radiative Transfer Equation
Ruo Li and Weiming Li
- 摘要
在Global Science Press 的大力帮助之下,CAM Digest开通了最新的镜像网页http://www.global-sci.org/cam.html, 欢迎大家积极投稿。
CAM Digest 源于2004年,是计算数学和应用数学学者们便于信息交流的一个媒介,每两周发布一次。它在互联网和自媒体还不发达的时代起到了相当大的作用,迄今拥有超过一万个电邮用户。由中国数学会计算数学分会管理。感谢各位注册用户多年来的不断支持,我们争取把CAM Digest 办得更好。
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