Omnipotent Data

Chapter 244



Located near Tsinghua University, this is called green glaze Internet cafe.

Cheng Nuo takes out the last book "history of modern mathematics" in his schoolbag, puts on his headset, turns on his computer and creates a word document in the confused eyes of several chicken eating players nearby.

The title of the project is printed on the "preprocessing method of combined compact difference discrete equations for two-dimensional Helmholtz equation"

Cheng Nuo.

Rub your hands, move your fingers, and twist your neck. Cheng Nuo is warming up.

On the left hand side, there is a whole stack of reference materials for seven or eight books.

On the right hand side, there are draft paper, neutral pen, ruler, rubber

Everything is ready, only to start!

Cheng Nuo did not waste any time, according to his plan. For the whole day today, he intends to finish at least 20% of his part of the task.

There will be classes after the National Day holiday, and things will be busier and busier. There is not much time left for Cheng Nuo!

Click on a song "where's Xueba going?" with the music coming from the headset, Cheng Nuo starts his research work.

"There's a cool guy in our class. Who dares to stand in the way of learning hegemony. "

"Xueba people have been reading books, even going to the toilet to run."

…………

"Xueba, Xueba, where are we going? In the end, will the exam be held tomorrow

"Learn the dregs, learn the dregs, you don't want to see any more! I can't remember it after reading it! "

Cheng Nuo hummed the lyrics in his mouth, while his hands crackled on the keyboard.

One dimensional Helmholtz equation is discretized by CCD scheme to derive two-dimensional Helmholtz equation. First of all, it is necessary to understand what the pretty girl looks like.

More than a year ago, there was a project dedicated to the study of one-dimensional Helmholtz sixth order compact difference method.

Therefore, Cheng Nuo can draw lessons from that paper on some things about the one-dimensional Helmholtz equation.

First, the one-dimensional Helmholtz equation with Dirichlet boundary conditions is considered.

F '' (x) + K ^ 2F (x) = g (x), X ∈ Ω = (0, 1)

F (x) = 0 ∈ α Ω

k is the wave number.

Next, the definition domain is divided into

Cheng Nuo's brain is working fast.

The seven or eight books on Cheng Nuo's left hand side are also flipped back and forth by Cheng Nuo, looking for the necessary information.

On the right hand side of the pile of paper, usually, Cheng Nuo basically can't use this thing.

Because, whether it is the college entrance examination, or those questions that mathematics teachers give in class, are too simple to be worth Cheng Nuo's "draft paper" which is the treasure of learning hegemony.

But it's not the same now.

In a short time in the morning, Cheng Nuo has used more than ten pieces of paper.

Every draft paper is filled with formulas that ordinary people think are ghost symbols.

The progress of the project is also developing in a gratifying direction.

Although Cheng Nuo's brain area width is higher than that of ordinary people, it has not yet got rid of human's degree.

Cheng Nuo is only a freshman, so this time, Cheng Nuo didn't do as usual. As soon as he got the project, he took the attitude of hastening the withering and decaying to finish it easily.

With the support of the brain's powerful computing power, Cheng Nuo is not worthy of being called, but it is not easy.

…………

Inside the green glaze net bar.

Cheng Nuo this just like a clear stream of existence, or attracted the attention of many people in the Internet bar.

Because Cheng Nuo is sitting in the Internet bar near the door. So whenever a new customer comes to visit and passes by Cheng Nuo, he will notice that a young boy is reading a book quickly while writing and painting. Both hands are still frowning, sometimes thinking hard, and sometimes suddenly smile.

From time to time, he laughed and said, "Wow, Kaka, I should use this formula. I'm so disappointed!"

???

Is it me It's the wrong place.

Customers who want to eat chicken look confused.

Of course, some people are curious. They go behind Cheng Nuo to see what Cheng Nuo is doing.

As a result, when I saw a lot of complicated formulas on Cheng Nuo's computer

Big guy! Big guy!

RBQ,RBQ! I really can't do it!

Good bye, don't send it!

Under Cheng Nuo's Xueba aura, xuezhui can avoid and retreat automatically!

…………

At noon, Cheng Nuo didn't want to go back to the dormitory and ordered a takeout.

"Man, help me look after things for a while, and I'll go down and get the takeaway." Cheng Nuo patted the shoulder of the man sitting next to him and opened his mouth with a smile.

The man sitting next to Cheng Nuo is a thin man with glasses and a sallow complexion.It looks like a friend who has been practicing for more than five years.

That guy has been playing chicken eating all morning. He has finished a chicken eating game and a skydiving game.

"No problem. Learn to be a bully The youth made an OK gesture to Cheng nuobi, then touched his stomach and muttered to himself, "I'm a little hungry."

When Cheng Nuo came back with the takeout, he saw that guy was sucking and sucking noodles, eating delicious.

Cheng Nuo sat down beside the man, turned his head to the young man and said, "brother, the paper bowl used for instant noodles is not healthy. Er I heard from an expert

The young man laughed and sucked his instant noodles. Finally, he was vague, "healthy? Hehe, does that expert know about instant noodles? I've got to eat instant noodles, and I care about my health! "

Cheng Nuo can't refute the youth's words.

"No more, no more. Eat, eat."

Cheng Nuo rubs his hands and opens the takeout bag with saliva.

Inside It's a bucket of delicious instant noodles.

…………

"The one-dimensional Helmholtz equation is discretized by CCD scheme and the result is as follows: AF: =..." (ㄒoㄒ)┏(゜ロ゜;)┛……”

In the whole Internet cafe, rhythmic finger tapping sounds on the keyboard.

It's just that some people are playing and others are learning.

“f=[f1,f2…… fN]^T,f'……”

"Oh, finally it's done!"

At seven o'clock in the evening, Cheng Nuo got the one-dimensional Helmholtz equation of CCD format. It's just a sense of accomplishment!

I planned to use two days to get the one-dimensional, but I didn't expect that it was in good condition and directly shortened the time by half.

So tomorrow, we can start to export two-dimensional work.

Night had already come, and the street outside was full of lights.

Cheng Nuo remembers that he wrote too much and didn't have dinner yet.

After stretching, Cheng Nuo takes off his headset. Looking up, Cheng Nuo found that almost everyone in the Internet bar did not play with the computer, but raised his head one by one, looking at the big screen in the Internet bar.

What is shown on the big screen is the finals of the LPL professional league.

EDGVRNG。

Score, 1-2.

It was at the end of the fourth inning. RNG is dominant.

Five people highland perfect group, kill the enemy four people, push the high ground, break the front teeth.

Bang!

When the blue crystal broke, the commentator yelled at the top of his voice: "let's..."

"Congratulations to RNG!"

The whole Internet bar, all boiling.

…………

PS: congratulations to RNG on winning the championship of LPL Spring Festival Competition in 2018!

Congratulations on Uzi winning the spring playoff MVP!

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