Chapter 75 Xu Qingzhou is really not a human being!
Time gradually passed, and the midday sun passed through the leaves, leaving mottled tree shadows on the lawn outside the window. The breeze blew, and two dead leaves fell with the wind.
Throughout the morning, Xu Qingzhou completed the preliminary sorting of existing data and used Python to complete the cleaning of the latest set of sample data.
During this period, Gong Yunfei came to see him once. It could be seen that Xu Qingzhou was deep in thought and did not disturb him.
"Junior brother, take a rest and go eat."
Hong Yayu's voice pulled Xu Qingzhou back. When he turned around, he saw that Hong Yayu had taken off her work clothes.
Xu Qingzhou stretched and said, "Senior sister, I want to take these data back and study them slowly."
Hong Yayu nodded and pointed to the hard drive next to her, "You can copy it here, but it requires a lot of calculations and requires a lot of computer configuration."
"Well, I understand." Xu Qingzhou nodded. His computer cost 15,000 yuan, and it was no problem to process some data. After connecting the computer and copying the data, he and Hong Yayu walked out of the laboratory.
"Senior Brother Gong still wants to keep an eye on the experiment?"
"Well, when you were looking at the data just now, he went out to eat."
Hong Yayu didn't say much, nodded slightly, and led Xu Qingzhou across Zhongguancun North Street nearby.
"Sister, what should we eat?"
"Today I'm going to eat the beef noodles from Xuewu Canteen." After Hong Yayu finished speaking, she added: "Of course, you can eat other things."
"I also have beef noodle." Xu Qingzhou nodded with a smile, imitating Wu Canteen's beef noodle, which is indeed good.
Hong Yayu nodded slightly, showing a very knowledgeable expression, walked a few steps, and asked again: "How do you feel after reading the experimental data today?"
Xu Qingzhou said why Hong Yayu suddenly came to eat with him. Emotions are here to show concern. It was just like Gong Yunfei said. Although this senior sister was cold, she was very caring.
He said: "It is more difficult than a pure mathematical problem, but it already has some ideas."
"Is this your first time participating in a scientific research project?"
"right."
"you're good."
The two of them chatted about each other and walked into the Xuewu canteen before get out of class ended.
Hong Yayu really didn't have any idol baggage. She ate more than Xu Qingzhou, including a bowl of beef noodles, three fried buns, and even a pot helmet.
When the two of them were about to finish eating, the cafeteria gradually became more crowded, and at 12:10 noon, people who were finishing get out of class had already arrived.
Hong Yayu suddenly looked behind Xu Qingzhou and asked, "Do you know that girl?"
Xu Qingzhou turned his head in confusion and saw a figure disappearing around the corner as if running for his life. He seemed familiar, but he couldn't remember who it was.
"I didn't see who it was." Xu Qingzhou was a little helpless.
Hong Yayu was eating her meal and didn't pay much attention to who this person was. She just added: "She was filming us just now."
Xu Qingzhou turned around and looked again, feeling baffled. Or maybe he was so handsome that he needed girls to take secret photos of him?
Neither of them took what happened just to heart and went back to the laboratory directly after eating.
At the same time, at the corner of the restaurant, Zhang Qiong patted his chest, secretly making a dangerous secret and almost being discovered.
She glanced sideways and found that the two people had left. Xu Qingzhou is having dinner with a girl again!
This is the second one!
Having a Song Yao is not enough. He spends all his time messing around with women. It has only been a few days and another girl has appeared!
Zhang Qiong gritted his teeth, opened the photo just now, stared at the boy in the photo, his eyes darkened, Xu scumbag, just wait, I will expose your true colors sooner or later, and you will die without a burial place!
"Xiao Qiong?" The voice was clear and cold.
"Ah?" Zhang Qiong was startled, put the phone behind her back, and looked at the beautiful girl opposite nervously.
"Didn't you go to make rice bowls?" Song Yao was confused. Zhang Qiong's expression was so strange. At first he was fierce, like a bad person, and then he looked like he had been caught doing something bad.
Zhang Qiong reacted quickly, made an excuse, and said, "Yes, rice bowl. I suddenly want to eat the same thing as you."
"Then go quickly, we'll wait for you over there." Song Yao pointed to the empty seat aside.
"Okay." Zhang Qiong smiled and nodded.
So, Song Yao and Zhong Ruotong went to their seats first to wait for Zhang Qiong.
After a while, Zhang Qiong came over with a dinner plate and sat next to Song Yao. She couldn't help but ask: "Xiao Yao, why haven't I seen you going to Xu Qingzhou in the past two days?"
"He" Song Yao paused with chopsticks, her expression a little lonely: "He has been very busy recently, and I don't want to disturb him."
Zhang Qiong felt distressed for a while and sighed secretly, thinking that she must be busy and dating other girls.
Xiaoyao had too little relationship experience, so she was deceived by the scumbag Xu. Looking at the beautiful girl next to her, she felt more and more that Xu Qingzhou was not a human being, and such a good girl could not bear to deceive him.
"Have you decided on any clubs you want to join?" Zhong Ruotong mentioned another thing.
Song Yao was a little distressed and said, "I don't have any clubs that I want to join."
"During this period, many seniors have come to invite Xiaoyao, and even I have a headache." Zhang Qiong complained.
When freshmen enter the school, besides military training, the second thing they do is the club affairs.
The campus atmosphere is very lively, and the club recruitment event is in full swing in the Yanyuan Triangle, commonly known as the Hundred Regiments War. Xu Qingzhou really has no interest in this.
After two classes in the afternoon, after dinner, Xu Qingzhou declined Xu Zhengyang’s invitation to visit the Triangle Land. He found an empty classroom and spent two hours finishing the paper. Finally, he filled in the information and clicked to submit to PhysicsReports. Report).
After finishing the paper, he took out the laboratory data.
It was a good start in the morning, and the follow-up went much smoother.
At 11 o'clock in the evening, before the administrator drove people away, Xu Qingzhou had initially established a simple mathematical model.
Use the sigmoid function (logic function) to describe the change in resistance with temperature. This is a continuous function with an increasing rate of change. It has an "S" shaped curve, which can well describe the change from the normal state to the superconducting state. change.
At the same time, an equation model that depends on magnetic field strength and temperature is established.
Then fit the model parameters and bring in the data for verification.
Use Python to calculate the critical current density under magnetic field strength: defcritical_current_density(B, J0=1e10, Bc=10, n=2):
After all, it is only a preliminary model, so there are many first-time calculations and actual measurements. In and out, data optimization and improvement need to be continuously brought in in the future.
This is why Professor Zhao Shengwen requested the Institute of Mathematics. Just a small model requires complex calculations, let alone a complete large model that can describe the properties of niobium-titanium alloys.
(End of chapter)