From top student in college to scientific research powerhouse

Chapter 57 Thank you! This question is crucial!
"Ma Jianze, from Wucheng Industrial University."

Du Bin recognized the middle-aged man from earlier, and he said with a smile, "You're right, he certainly wasn't friendly to you."

"why?"

Zhang Minghao was very surprised.

He was just a doctoral student with a very narrow social circle, and this was his first time attending an academic conference.

In the entire academic community, the only group that doesn't have a good impression of him is the Yang Xuewen department at Donggang University.

Du Bin explained, "I heard it from others too. Ma Jianze submitted a proposal to the Aerodynamics Research Institute, which was initially finalized, but was later rejected."

"They prepared that proposal for several months; they were vying for a collaborative project."

Zhang Minghao was even more surprised. "What does that have to do with me?"

Du Bin continued with amusement, "It is said that the Aerodynamics Research Institute introduced several transformation methods of higher-order equations and substituted them into the higher-order equations of their scheme for verification, and found that there were large deviations in the verification results."

Zhang Minghao was immediately taken aback.

The others were also hearing this for the first time, and they couldn't help but laugh when they saw Zhang Minghao.

The phrase "transformation methods of several higher-order formulas" undoubtedly refers to Zhang Minghao's research, and he was caught in the crossfire. This also shows that Ma Jianze is not very shrewd.

After exchanging a few words and laughing together, it was almost time for the opening ceremony, and they returned to their respective seats.

The first two days of the conference consist of the opening ceremony and reports, while the third day includes seminars and various group meetings.

The opening ceremony was held on the morning of the first day.

The opening ceremony consists of speeches by the organizers and invited scholars, explaining the importance of the development of computational mathematics research, the goals and arrangements of the conference, and so on.

After a series of speeches concluded at 10:00 AM, the participating scholars went to their respective conference rooms to listen to the reports.

Zhang Minghao was not a mathematics professional and did not have a fixed research direction. He simply went around the venue to learn about the situation of each lecture hall and happened to run into Academician Du Bin when he came back.

Du Bin pulled him to the next hall and said, "This is all about cutting-edge technology, let's go listen to it together."

Du Bin, an academician and an expert reviewer at the conference, went straight to the first row upon entering the lecture hall and pointed to the empty seat next to him, inviting Zhang Minghao to sit with him.

Zhang Minghao glanced around and decided that sitting in the first row would be too glaring, so he chose to sit behind Du Bin instead.

The second row is much more comfortable.

Just as Du Bin said, the reports in the hall are all related to cutting-edge technology research.

After waiting for about five minutes, Professor Zhang Hua from Capital University of Science and Technology took the stage and gave a report on the design and development of 'photonic chips'.

His research group designed a 'photonic chip' that can solve partial differential equations with high precision.

At the beginning of the report, Zhang Hua took the stage to introduce the relevant experiments.

By developing a multi-channel light source, they utilized groundbreaking technology to load input vector data. They also introduced a reversibly designed distributor that can efficiently distribute optical signals to a micro-ring array, laying the foundation for parallel computation of large-scale matrix-vector multiplication.

After completing the introduction to the experiment, he began to explain the algorithmic logic related to chip design and the numerical solution of partial differential equations.

Using the Plas equation and the Poisson equation as examples, this paper explains in detail the step-by-step solution process for photonic chips.

In closing, Zhang Hua summarized, "The high-efficiency spectral splitting design is more than a thousand times faster than conventional chips for partial differential equations."

"Using the same micro-ring array and matrix partitioning method, we can achieve high-precision parallel solutions to the Laplace equation and the Poisson equation."

"At the same time, the solution errors of both equations are within 5 percentage points."

The report concluded with a round of applause.

The review experts in the front row were positive about the report. They asked several technical questions, mainly focusing on the design and computation of the photonic chip.

Zhang Minghao stared intently at the solution module breakdown diagram on the screen wall, pondering it carefully.

He discovered a problem.

Leaving aside the issues of 'hardware' and 'technology' in the design of the entire optical chip, the conclusion of "Correct Perception" is that the subsequent computer algorithm logic is 'incorrect'.

"mistake?"

"Is this error due to a problem with the research content, a flawed conclusion, or a minor, localized issue?"

This is also a limitation of "Correct Perception".

When listening to a complex research report, unless you use "correct perception" to make judgments at every step, the final "error" will be very vague.

Zhang Minghao did indeed feel there was a slight problem; he had studied the Laplace equation and the Poisson equation.

Both are partial differential equations used in electrostatics and are closely related. The Poisson equation is slightly more complex than the Laplace equation.

In electrostatics, Poisson's equation degenerates into Laplace's equation when the mass, charge, and other source distributions are zero, describing the equilibrium state of a source-free field.

"Calculating and solving the Laplace equation..."

Zhang Minghao stared at the module diagram, pondering, when suddenly his eyes lit up and he found the problem.

He looked towards the stage.

Professor Zhang Hua answered several questions and then tidied up the things on the stage while waiting for his turn to be asked.

Zhang Minghao stood up decisively, immediately attracting the attention of the scholars in the hall.

"Who!"

"So young. Is the person who came with Academician Du Bin his doctoral student?"

"Maybe……"

Zhang Hua raised his head and hesitated before speaking, "This one..."

"Professor Zhang Hua, hello. My name is Zhang Minghao, and I am a doctoral candidate at Jiangzhou University."

Zhang Minghao politely introduced himself, and then said, "I have a question about the computer numerical solution of the Poisson equation and the Laplace equation that you just mentioned."

Zhang Hua smiled and said, "Go on." Zhang Minghao said, "In your explanation, you used module groups to divide a continuous area into grid nodes, but your chip's calculation method is different from the conventional one."

"The multi-layered division of optical channels will not cover all differential analysis results, and subsequent differential approximation calculations will have loopholes..."

"In other words, the final error may not be just five percent, but could be ten percent, twenty percent, or even more."

As soon as he finished speaking, the lecture hall fell silent.

Everyone looked at the modular diagrams on the screen. Zhang Hua stopped what he was doing, walked down from the podium, and turned around to look at the modular diagrams as well.

After a while, others realized, "That's really true!"

"The calculation methods for chip design are different and cannot cover all the results of differential analysis."

"Without numerical input, the final result will be more biased..."

Zhang Hua carefully examined the module group and, considering the calculation method of the photonic chip, discovered that there was indeed a problem with the coverage of numerical substitution.

This is a minor issue, merely a design flaw that won't affect the overall research, but it will severely impact the accuracy of the final calculations.

The chip is still in the design stage. Once the design is finalized and manufacturing begins, it could become a major problem.

"call……"

Zhang Hua took a deep breath, turned to Zhang Minghao, and grasped his hand with gratitude. "The question you raised is crucial!"

"In our design, we focused more on the chip's computing speed and ignored the impact of design changes on the algorithm."

"This is where our shortcomings lie."

"Thank you!"

Zhang Minghao smiled and said modestly, "You're too kind."

"I only discovered the problem because I was quite familiar with the Laplace equation."

Others couldn't help but start discussing, "He introduced himself as a doctoral student at Jiangzhou University?"

"Zhang Minghao, that name sounds familiar!"

"I know he's the student who was expelled from Donggang University, he's the one who's been on the news!"

"Didn't we have that invisible ball a while ago? It seems to be related to him too."

"It's impressive that a PhD student can identify problems, but for him to dare to point them out is remarkable..."

"Truly a genius!"

News of what happened in the lecture hall spread quickly throughout the entire venue.

The fact that Zhang Hua's report was scheduled for the first morning is enough to demonstrate the level of attention it received.

For a doctoral student to dare to voice a question in public is already very courageous, and to be able to get to the point and point out the key issues is absolutely remarkable.

At lunchtime, the group from Jiangzhou University sat down at a dining table.

Meng Guoqing said in surprise, "There's such a thing?"

"It's a pity I wasn't in that hall at the time. Did Academician Du Bin take you there?"

"How did you find out?"

Zhang Minghao said nonchalantly, "It was just a coincidence. I'm very familiar with the Laplace equation. It sounded a little off, but I figured it out after thinking about it carefully."

"You're really impressive if you dare to say it out loud!"

Xue Fengzhu sighed, "If it were me, I probably wouldn't have dared to speak up in public if I had discovered the problem back then."

"If we make a mistake, we'll become a laughing stock."

Meng Guoqing and Huang Ming nodded in agreement; they understood this mentality.

They're not judges.

If you take the initiative to point out a problem, it's fine if you're right, but it can be very embarrassing if you're wrong.

Zhang Minghao laughed and said, "You are all professors, of a higher caliber, different from me. I am just a doctoral student, and even if I say something wrong, no one else will care."

In the afternoon, I listened to reports again.

Zhang Minghao and Meng Guoqing found seats in the back row. The back row seats were not conspicuous, unlike the front row where they always felt like a large group of people were watching them from behind.

They listened to two reports in succession, one on matrix eigenvalues ​​and the other on optimization calculations.

Some of the content went beyond the scope of knowledge, and Zhang Minghao only vaguely understood it. In addition, he was feeling drowsy in the afternoon.

He wanted to go outside for a stroll, but when the third scholar to give a presentation came on stage, he immediately sat back down.

Ma Jianze is the kind of middle-aged man who isn't very friendly to me in the morning.

When Ma Jianze walked onto the podium, he glanced at Zhang Minghao and smiled with narrowed eyes.

He looked at the audience and began his presentation, “My team has studied an optimal balance framework design scheme under the influence of multiple physical factors.”

"In practical applications of aerodynamics, we often encounter problems caused by interference from various physical factors. For example, in the aviation field, we need to conduct comprehensive and in-depth research in multiple directions, such as complex flow field prediction, jet interference, microfluidics, aerodynamic stealth, and low Reynolds number flow dynamics."

"All research involves the effects of complex physicochemical changes, and it requires finding an optimal balance design under the influence of multiple physical factors..."

Zhang Minghao immediately perked up.

Find an optimal balance design under the influence of multiple physical factors...

Isn't this exactly my area of ​​expertise?

　I'm begging for monthly votes while I'm on all fives.

　　There are only two days left on the new book chart, and I don't have many monthly votes. Please support me, thank you everyone!

　　
　
(End of this chapter)