Chapter 61 72 Hours of Liver Explosion

After completing the last step of operation, Wang Xiaodong packed the obtained data and looked at Lu Zhou next to him: "The iterative operation procedure of the main deceleration stage is completed, the spatial coordinate positions of the perilon and aphelion points and the speed direction of Chang'e-3 are obtained. , shall I send you an email?"

Lu Zhou, who was doing the math, didn't lift his head and said, "Just throw me QQ."

Wang Xiaodong: "OK, next step?"

"...The schematic diagram of the satellite's orbit around the moon and the geometric diagram of the satellite's landing orbit. The data parameters are here, and the drawing is up to you." He threw the almost full A4 paper on Wang Xiaodong's desk, and Lu Zhou started non-stop. the next calculation.

After scanning the data on the paper, Wang Xiaodong skillfully replaced the Matlab software with the more professional SAS software for data drawing, and answered blankly, "Okay."

The two cooperated quite tacitly, fighting in their respective fields of expertise.

At exactly twelve o'clock noon, Lin Yuxiang walked into the computer room lightly, and placed two servings of braised chicken and rice on the table, as well as two bottles of canned coffee.

"School masters, let's have dinner."

Wang Xiaodong got up quickly, took his share, and squeezed a smile from his paralyzed face: "Thank you."

Lin Yuxiang responded with a smile naturally, then walked over to Lu Zhou and handed out the plastic bag in his hand: "Hey, yours."

Lu Zhou didn't lift his head: "Help me put it on the side, wait for me to finish this step."

"okay!"

At nine o'clock in the evening, Lin Yuxiang returned to the bedroom with Hache. And when it was more than ten o'clock, Wang Xiaodong also went back. As tomorrow's main force, he must get enough sleep today.

So far, apart from Lu Zhou, there are only a few people left in the computer room.

Including Luo Rundong, the second student in the first class of Shuying, including the thigh of Liu Rui and his team.

The kid Liu Rui was naturally there, as well as the third-year student of the Statistics Department next to him.

The configuration of their team is a bit special. The thigh responsible for programming is the captain and is also responsible for part of the modeling work, but it does not involve calculation. The main task is to assign tasks to Liu Rui, who is the main modeler, and at the same time instruct another person to start the writing of the paper outline. .

The statistician who was programming suddenly asked abruptly, "Is that buddy from your dormitory?"

Liu Rui was stunned for a moment, then nodded: "Yes."

Xueba said casually: "That buddy is very good. I glanced at it when I went to the toilet just now. They chose question A. The competitors should be much less than us."

Liu Rui asked strangely, "Then why don't we choose question A?"

After so long, the hair on his head was almost gone, and he didn't feel that question B was any easier.

Xueba said unceremoniously, "Because I brought you all this year, do you think I want to choose question B?"

Liu Rui: "..."

Another little friend who didn't talk nonsense from beginning to end: "..."

At three in the morning, there were only five people left in the computer room.

At four in the morning, Lu Zhou was the only one who was still sitting in front of the computer.

When the sky outside the window shone with the light of the early morning, Lu Zhou finally wrote the last line of the formula.

The door of the computer room was pushed open, and Wang Xiaodong walked in.

"nailed it?"

"It's done..." Lu Zhou sighed, "The basic modeling has been completed, and the rest is programming, drawing, and sensitivity analysis by observing the changes in the simulation results. When you are done, I will start writing. The second half of the thesis."

Wang Xiaodong nodded: "Leave it to me, go and rest for a while."

"Um."

Lu Zhou pinched his brows, shook his head, stood up, and walked outside the computer room.

Compared to the few times I stayed up late during the summer vacation, this level was nothing at all.

Lu Zhou couldn't remember exactly how he got back to the bedroom. He only remembered that after opening the door, he didn't even take off his clothes and fell asleep on the bed.

And when he woke up, it was already dusk outside the window.

Sitting up from the bed, Lu Zhou rubbed his messy hair, took out his phone from his pocket, and checked the time.

I vaguely remember that it was six in the morning when I got to the bedroom.

"Have you slept for twelve hours..."

The next time I go to sleep, I have to wait until the game is over.

After going to the bathroom to wash up, Lu Zhou went directly to the computer room.

When he arrived at the computer room, Wang Xiaodong had just finished the last program.

Lin Yuxiang was not there, but he helped him buy the food, it was even a little hot to the touch, it should have just been brought here.

Lu Zhou untied the plastic bag and was about to tear open the packaging bag of chopsticks. He found that the packaging bag was open and there was a note stuffed inside.

Slightly stunned, he took it out and unfolded it.

【Come on~O(∩_∩)O】

Lu Zhou: "..."

After crumpling the note into a ball, Lu Zhou threw it into the plastic bucket in the corner, and started eating with the disposable chopsticks.

After finishing dinner, Lu Zhou went to the bathroom to wash his face, and threw the takeaway box to the trash can outside the corridor.

When he came back, Wang Xiaodong pushed his glasses, stood up from his position, looked at him and said.

"I have completed the program. I have sent the code text used in the three questions to your QQ. I will come back at three in the morning, and the paper will be yours."

"OK, remember to set an alarm clock, don't forget."

"I know." Wang Xiaodong nodded and turned to leave.

Taking the baton like a relay race, Lu Zhou sat at the computer desk and stretched out.

It's 7pm, and there are 37 hours left to submit the paper.

In these 37 hours, he needs to integrate all the calculus process, modeling ideas, procedures, including the further promotion of the three problems, into a 20- to 30-page paper.

No matter how ingenious the model is, how ingenious the program design is, the final presentation on the jury will be in the form of a paper. If the paper cannot be understood by the judges, and the judges can understand the subtlety of it, then the award will be out of the question.

Therefore, this last step must not be sloppy!

When Lu Zhou entered the working state, he completely forgot about the time. His attention was highly concentrated on the computer screen.

The abstract and keywords at the beginning of the thesis are controlled within one page according to the format requirements. After Lu Zhou wrote it, he simply deleted it, which just met this condition.

No one knows the whole idea of ​​modeling better than himself, so it's a lot easier to do.

Next is the most tedious demonstration process. Here is the dry part of the whole paper. Although it does not take up too much space, it is the place that takes the most time to complete.

Because it involves not only the idea of ​​mathematical modeling, but also the idea of ​​programming.

The former Lu Zhou knows what he knows, while the latter needs to communicate with the person in charge of programming to complete it.

Time passed minute by minute, and the sun that had completely set outside the window rose again and slanted to the horizon again.

When the night was complete, Lu Zhou finally completed the last line of the problem promotion part.

Stretching, Lu Zhou stared at the paper with sleepy eyes that were about to be puffy, and yawned to himself.

"...The next thing is the references and appendices, and it's finally time to wrap up."

Putting his hands on the keyboard, Lu Zhou copied and pasted the title of the cited document.

【

...Design and Analysis of Gravity Turning Orbits for Lunar Soft Landing (C), The Second Academic Conference of the Deep Space Exploration Technology Professional Committee of the Chinese Astronautical Association. 2005.

...Research on the detection and avoidance scheme of terrain obstacles for manned lunar landing, "Space Return and Remote Sensing". 2014, 35: 11-19

...

】

A total of six Chinese literatures and one English literature were cited.

In the last step, Lu Zhou copied Wang Xiaodong's code in the appendix at the end of the document.

Standing behind Lu Zhou, Wang Xiaodong pushed his glasses, looked at the text on the screen and asked, "Done?"

"Well, it's all done, you help me check for typos, and if there's no problem, convert it to pdf format." Standing up from the stool, Lu Zhou shook his drowsy brain, "I'm going back to sleep. , the work of generating MD5 code and uploading is left to you."

"Come on," after a short pause, Wang Xiaodong said a rare caring word, "Be careful on the road, don't fall."

"Well." Lu Zhou nodded and walked out of the computer room.