The auditorium of Columbia University was already full of all kinds of people. It's almost the end of the semester, but it's still some time away. In addition, the exam week has passed, so the students who have nothing to do have come to Junxin's speech site.

Among these people, the largest number is undoubtedly the teachers and students of the Department of Mathematics. After all, in the entire academic world, Junxin's most widely known academic views are put forward on the basis of mathematics. He is seen more as a scholar of mathematics.

The second is the faculty and students of the Department of Physics and its related majors. After all, in this year at Princeton University, Junxin and other five-member team members caused a huge storm in the academic community because of the superstring theory, especially the string theory is still the most cutting-edge theory in the world. As a person who has made outstanding contributions in this field, Junxin is a figure that cannot be ignored at any time.

The last remaining audience was mostly chemistry students. A year and a half ago, an epoch-opening paper published in the international scientific journal Nature thoroughly explained the meaning of quasicrystal. In a sense, it even has epoch-making significance. Even Professor Lawrence, a famous chemist in the United States, commented that Junxin's quasicrystals have completely changed human cognition of matter, and in a sense, this is a major discovery at the Nobel Prize level. Therefore, many teachers and students in the Department of Chemistry also came to listen to his academic speech.

"Professors, teachers, dear students, today we are very honored to invite Mr. Junxin, a world-renowned mathematician, physicist and chemist from the Department of Mathematics of Princeton University, to give an academic lecture at Columbia University. Since 1980, Mr. Junxin has made breakthroughs in mathematics, proving the Modell conjecture and proposing and proving Junxin's inference, thus providing a clear path for the proof of Fermat's theorem. He also proposed the proof method and results of the four-dimensional Pangjialai conjecture, as well as his recent outstanding research work on the Langlands program, and can be regarded as a world-class mathematician. ”

There was a round of applause from the audience. It is only 1982 now, and Junxin has made such great achievements in less than two years, winning the warm applause of everyone present.

In physics, Dr. Junxin systematically proved the graviton problem in superstring theory, which promoted the development of superstring theory and grand unification theory. The concept of quantum communication is proposed, and a rigorous mathematical proof is given. Professor Schwartz, the proposer of superstring theory, called him a well-deserved leader in superstring theory. ”

"At the same time, in chemistry, Dr. Junxin used the mathematical model as the derivation method for the first time in the paper, established a mathematical model, found a loophole in crystallography, and thus put forward the concept of quasicrystallization that shocked the world, which has aroused wide discussion and recognition in the academic community, and is a well-deserved world-class chemist."

As soon as I heard it, the host knew that he was a professor in the Department of Mathematics at Columbia University. Therefore, what is admired in the words is Junxin's great achievements in mathematics, and other discoveries are more or less discovered under the influence of mathematics.

"Let us invite the protagonist of today's speech, Mr. Jun Xin, Ph.D. from the Department of Mathematics of Princeton University, a famous university in China. Everyone is welcome! ”

After Junxin heard the host's announcement, he walked over from the side with a smile and came to the stage.

After a brief handover, Junxin took over the control of the stage, and then began his speech today in front of a large audience.

"Thank you to Columbia University for several invitations, because of academic problems, I have not agreed to the invitation of Columbia University, until a few days ago just completed my doctoral dissertation defense ceremony, I rushed to Columbia University, and the preparation may not be very sufficient, so if you have any questions that need to be asked, please feel free to ask questions after my speech."

"What I'm going to tell you today is not about anything in any of the fields that I currently know. It's something that extends out of Columbia. ”

Ignoring the buzzing sound in the audience, Junxin said unhurriedly: "The largest engineering experiment in the history of Columbia University, there is no doubt that everyone here knows that it is the Manhattan Project, under this engineering project, the first atomic bomb in human history was built, and the era of nuclear energy application began. ”

"The Manhattan Project, with its enormity and concentration of human and material resources, is one of the pinnacles of human history. Leaving aside the specifics of the Manhattan Project, let's take a look at some of the other things that came under the Manhattan Project, and that's what I'm going to talk about today. ”

"After 1955, computer technology gradually matured and popularized, so systems engineering came into being. Forrest of the Massachusetts Institute of Technology in the United States first proposed industrial dynamics in 1957, and later developed from engineering systems to social systems, using this method to establish a world model and an American national model. However, there is no difference in the research methods of each field, so it was named systems engineering in 1972. ”

"In addition to systems engineering, many countries and regions in the world are still reversely cracking the world's top technologies and principles, and I don't know when people have systematically summarized such technologies as reverse engineering."

"What I'm going to talk about today is a new kind of engineering that I proposed after carefully studying systems engineering and reverse engineering, in order to make up for the shortcomings of some aspects of these two, and I call this kind of engineering concurrent engineering."

"What is concurrent engineering? First of all, a relatively complete definition of this engineering is that concurrent engineering is a systematic approach and comprehensive technology for parallel and integrated processing of products and related processes, including manufacturing processes and support processes. ”

"Concurrent engineering requires that this approach requires product developers to consider all factors from concept to end-of-life throughout the product's lifecycle, including quality, cost, schedule, and user requirements, at the outset. The goal of concurrent engineering is to improve quality, reduce costs, and shorten product development cycles and time-to-market. The specific approach of parallel engineering is: in the early stage of product development, organize a project team with a variety of functions to work together, so that the relevant personnel can obtain the requirements and information for new product requirements from the beginning, actively study the work business involving the department, and provide the required requirements to the designers, so that many problems can be solved in the early stage of development, so as to ensure the quality of the design and avoid a lot of rework waste. ”

Junxin stood on the stage and talked eloquently, and came up with the last of the three major engineering sciences that was officially proposed in 1988 and gave a clear definition, and parallel engineering called systems engineering and reverse engineering.