“Better Tsinghua” public welfare lecture -- “Artificial Intelligence and Brain Science Development” by Academician Dai Qionghai, President of CAAI

In order to give full play to the role of the university foundation as a bridge and platform for pooling university resources and serving the development of the country and society, the Tsinghua University Education Foundation has launched the “Better Tsinghua” public welfare lecture series, which continue to invite experts and scholars from Tsinghua University to share their views and answer questions on issues of political, economic, cultural and scientific development that are of concern to the society, so that more people can get more professional knowledge services in a more convenient way. At 8:00 pm, August 16 (Monday), “Better Tsinghua” public benefit lecture “Dai Qionghai Artificial Intelligence and Brain Science Development” will be online premiere. Please pay attention to the Tsinghua University Education Foundation official WeChat account.

Lecture Preview

How to observe the eye of God?

In the lecture hall’s latest preview, Academician Dai Qionghai introduced: this instrument has previously been observed internationally, for example, tumor cell metastasis, where is the biggest problem of tumor disease. First, we do not know when to turn, do not know what environment to turn, do not know why it to turn to where. So we wanted to develop an instrument that would work over a long period of time. At present, the international microscope cannot do long-term observation, the longest one is more than 10 minutes. The instrument we make can up to 10 hours, 20 hours, the next 40 hours of long-term observation. This is the device that we’re making for the metastasis of tumor cells, but also for the immune system.

The human immune system is very important. We do not how does the immune system work. That’s why we’re working on it. The first thing is to have 4D imaging. What is 4D? You have to have plane, stereo and time dynamics. The microscopes that we do in the lab here, they all have to live dynamically. We do our job according to how immune cells work. International indicators say that the eye of God is able to see both a 200-nanometer resolution horizontally and a 300-nanometer resolution vertically, a resolution that countries don’t have. I call him the eye of God because I can see both the plane and what’s inside. This is tumor metastasis. You see how the tumor cells metastasize, how it goes through this detail, because it’s going to attack little by little. When a blood vessel opens, it’s going to attach itself to the wire, and come in a second. Then there’s a connection between the front and back cells, which will carry around changes that are adaptive to the blood vessels. The blood vessel is first internationally seen, and the green one is a tumor cell. If life scientists had a weapon, it could explain how cancer cells metastasize.

Now, if you look at the immune cells, you’ll see that when the immune cells go, there’s a lot of little vesicles left, and look at this little vesicle that you didn’t see before. The immune cells in our body fight the virus. It’s the army. It needs more troops to fight. But the body actually has a limited number of immune cells, so how does it know where the virus cells are, and it passes. And what we’re finding now, is that everywhere it goes, it leaves behind a lot of very thin vesicles, and what does this vesicle do, the viral cell just touches it and it bursts, and then the immune cell vesicles are connected to the immune cell. Then the vesicle burst, so the immune cells came to fight, similar to our Great Wall Beacon Tower, it plays such a role, this is also the first time in the world for us to see it.

Lecturer Introduction

Dai Qionghai

Chairman of CAAI

Academician of the Chinese Academy of Engineering

Dean of Information Science and Technology School of Tsinghua University

Dean of Brain and Cognitive Science Research Institute of Tsinghua University

Director of the National Research Center for Information Science and Technology of Beijing

In 2005 he won the National Outstanding Young Science Foundation Award, 2017 National Innovation First Award. His main academic direction is artificial intelligence (stereo vision) and computational photography. He has consistently committed to the field of theory and key technology innovation and has taken charge of the major basic research “Project 973” of the Ministry of Science and Technology and the major instrument project of National Funding. He also has successfully developed the multi-dimensional and multi-scale computational imaging instrument, which is expected to become an important weapon in brain science and tumor metastasis research. He won the 2016 National Science and Technology Progress Second Prize, 2012 National Technological Invention First Prize and 2008 National Technological Invention Second Prize.