ASC Moment|干货满满!平行讲座引领学生探索科学奥秘

2019亚洲科学夏令营期间,营员们除了可以聆听世界级科学家的精彩演讲外,还可以根据个人兴趣,在多场涵盖不同领域的平行讲座中进行选择,进一步领略大师们的讲课风采,深入探索科学的乐趣。

 

7月30日下午, 2019年沃尔夫数学奖得主让·弗朗索瓦·勒格尔教授,美国伊利诺伊理工学院计算机科学系教授、系主任,国际电子电气工程师学会(IEEE)成员孙贤和教授以及上海光学精密机械研究所梁晓燕教授在广以的三间大教室同时开课,丰富了营员们对离散随机模型、计算机数据处理与激光的认识。

 

 离散随机模型 

 

 

 

Jean Francois Le Gall教授的课堂围绕离散随机模型,分别对大随机树图的渐进和随机几何图像的先进理论进行阐述。他通过大量丰富的图像、示例、证明,带领营员们依次学习了高尔顿-沃森树(系谱模型)、高度的渐进、轮廓函数的渐近性、ER模型(随机图像中最简单的模型)、BA模型(利用优先连接机制生成无标度随机网络的算法)等内容。

 

虽然只有短短一个小时的课堂,营员们却大呼“干货满满”。Jean Francois Le Gall教授还提出了系列问题,供营员们讨论以加强对课程内容的理解。有的营员还特别询问了教授的联系方式,希望深入向他请教学术问题。


 

 

泰国营员将精心准备的礼物送给教授


 

 

开心地求签名!留下联系方式

 

 

 从阿姆达尔定律到大数据计算 

 

 


 

讲座上,孙贤和教授带领营员们回顾了可扩展计算的三个定律:阿姆达尔定律(Amdahl's Law)、古斯塔夫森定律(Gustafson's Law)和孙-倪定律(Sun-Ni's Law),并讨论它们在大数据时代的启示和影响。当谈到计算机数据处理提速的理论和影响时,他幽默地表示,当你的CPU承载不住大数据计算,就会很悲惨。

 

作为可扩展计算的著名三大定律之一的孙-倪定律,由孙贤和教授于上世纪90年代提出,旨在利用“记忆阶梯”减少计算机进行信息处理时处理器卡顿等问题,从而为数据处理大幅度提速。“当然,更快的永远都不够快。”孙贤和教授表示。

 

 

 

 

超强超短激光及其应用 

 

 

 

梁晓燕教授在“超强超短激光装置”建设领域奋斗了近30年。她克服病痛折磨,带领团队,日夜奋战,自主创新,解决了一系列技术难题,获得了多项国家专利。在2017年,实现了激光10拍瓦的能量放大输出,等于创造了“10个太阳”,达到国际同类研究的领先水平。


 

“随着技术的发展,激光的应用领域也在不断拓展和延伸,包括科学研究、工程技术、医疗、生物、军事等。”讲座中,她结合自己多年的科研经历,深入浅出地向营员们介绍了激光的发展历程、超强超短激光的基本原理,并且以激光治疗癌症和X射线的应用为例,展示了激光的发展前景优势。

 

“科学很有意义,也可以很有趣。”讲座最后,梁晓燕教授鼓励同学们积极探索,勇于创新,敢于提问,在未来的学习道路上不断提升自己。


 

 


 

 

 

我对教授们在数据处理提速方面的精益求精印象很深刻。

-ASAKO KITAI(日本)
 

 

 

老师展示的理论创新的过程对我很有启发,我觉得这个非常重要。

-钱思涵(中国)

 

 

 

 

 

 

 


 

In addition to plenary sessions, which provide opportunities for young people who have scientific enthusiasm to learn from world-class scientists, the 2019 Asian Science Camp also includes parallel lectures covering different fields for campers to choose based on their interests. These lectures enable campers to dive deeper into scientific research.

 

In the afternoon on July 30th, Prof. Jean Francois Le Gall, who won the Wolf Mathematics Prize in 2019, Prof. Xian-He Sun, the past Chairman of the Department of Computer Science at IIT and IEEE fellow, and Prof. Liang Xiaoyan, the professor of Shanghai Institute of Optics and Fine Mechanics (SIOM) delivered their lectures separately in GTIIT classrooms with the topics of discrete random model, computer data processing as well as ultra-intense and ultra-short lasers and application.

 

 

 Discrete Random Model 

 

 

 

Prof. Jean Francois Le Gall's lecture focused on discrete random models explained the theoretical studies in asymptotics for large random trees and graphs as well as the recent advances in the theory of random geometry. He used images, examples and proof to help campers understand the Galton-Watson trees (modelling genealogies), asymptotics of height and counter function, Erdős–Rényi model (the simplest model of a random graph), Barabási–Albert model (generating random scale-free networks using a preferential attachment mechanism), etc.

 

The one-hour lesson was filled with substantial contents. After the course, Prof. Jean Francois Le Gall left a series of question for camper to further understand what had been taught. Some campers also asked for the contact of the professor for further academic discussion.


 

 

 

After the professor answered the last question, enthusiastic campers from Thailand sent the gifts prepared by themselves to the professor, took photos together, and received signature from the professor.

 

 

 From Amdahl's Law to Big Data 

 

 

 

During the lecture, Prof. Xian-He Sun reviewed Amdahl's law and Gustafson's law and discussed the inspiration and impact in the age of big data. He talked about the theory of computing speedup and its influence humorously, "When your CPU cannot stand the big data computing, it would be miserable."

 

Sun-Ni's Law, including Amdahl's law and Gustafson's law, were regarded as the three laws in scalability computing. Prof. Xian-He Sun came up with Sun-Ni's Law, which uses Memory Hierarchy to reduce blocks and other problems to during information processing. "Of course, a faster computer is never fast enough." Prof. Xian-He Sun said humbly.


 

 

 

 

 Ultra-intense and Ultra-short lasers and application 

 

 

 

In the lecture, to start up, Professor Liang showed the campers some backgrounds of her team, which achieved high energy amplification for the highest peak power of 10 PW in the research of the Shanghai Ultra-intense and Ultra-short laser facility in 2017. Then, she explained the profound laser theories in simple language for campers about the development process and high intensity and short width. She analyzed the advantages of applying laser in cancer treatment and X-ray and showed the future development of it. Professor Liang pointed out that with the development of technology and the improvement of the output power of laser, its application area will continue to expand, including the industrial field, medical field, scientific research field and so on. "Science is not only meaningful but also interesting." At the end of the lecture, Professor Liang encouraged students to be active, creative, don't be afraid to ask questions and keep improving themselves in the future.

 

 

 

 

 

It's very impressive to see the insistence of the scientist on computing speedup.

-ASAKO KITAI (Japan)

 

The process of theory innovation on the basis of former laws is very inspiring. For me, this is very important. 

——Qian Sihan (China)

 

 

 

 

 


文:ASC2019媒体组(陈可、张梓涵、曾嘉怡)

图:ASC2019媒体组(许越)

文字编辑:GTIIT传媒与公共事务部、ASC2019媒体组(陈余钿)
 

图片编辑:汕头大学新闻中心

Text by ASC 2019 Media group (Chen Ke, Zhang Zihan, Zeng Jiayi)  

Photos by ASC 2019 Media group (Xu Yue)  

Text edited by GTIIT News and Public Affairs, ASC 2019 Media group (Chen Yutian)

Photos edited by STU News Center