Chapter 341

On February 14, at 20:00 New York time and 8:00 Kyoto time, the 22nd U.S. Global Undergraduate Mathematical Modeling Contest officially opened.

As mentioned before, this is the largest number of participants since the event was held.

More than 10000 teams from more than 30 countries and regions participated in the competition.

In addition to the competition time to be longer than a day, modeling paper language must be English, other rules are no different from the national competition.

Cheng Nuo in the 30 minutes before the start of the game, once again met the other two teammates arranged for him by the Academy.

Two people see Cheng Nuo, can't help but get a little itchy.

One of the hostages asked, "Mr. Cheng Nuo, what did you do the last two days? Didn't you say that we should find a set of modeling questions a few days before the game starts to run in well?"

Cheng Nuo put his hands together, "I'm sorry, I'm sorry, I'm busy with a very important thing these two days, so I have to push this link out."

"But I don't think it will have any effect on our final results." Cheng Nuo added with a faint smile.

Another teammate looks at Cheng Nuo a face of self-confidence, can not help but bitterly smile.

Where does this guy come from?

You know, it's just the second time they've met since they formed the team.

That is to say, the cooperation degree of the three of them is almost zero.

Even if he knew Cheng Nuo was strong, could he still be strong enough to be able to drag two?

This is the beauty contest of the strong!

…………

At eight o'clock, Kyoto time, the modeling topic opens the download channel on the official websites.

There are six modeling questions in American competition. Choose one of them to answer. Each topic has its own fixed focus.

Question a, continuous.

Question B, discrete.

C, big data.

Operation research and network science.

E, environmental science.

F, policy.

If you choose one of the questions a, B and C, you will participate in MCM (Mathematical Contest in modeling) competition by default.

If you choose questions D, e and F, you will participate in ICM (Interdisciplinary contest in modeling) by default.

If we insist on the difference between MCM and ICM, the general MCM competition topics are more specific, concise and clear.

The ICM competition is more open, the problem is more "big", more macroscopic, and the length is longer. It is often a global common concern, so it does not rely on specific cultural background or living habits. However, quite a part of the topics of MCM are based on the life in the United States, which is not familiar to other countries, especially Chinese competitors.

Therefore, in most cases, Chinese contestants will choose one of D, e and F to answer, that is, to participate in ICM competition!

Of course, the most important thing is to see the areas the team is good at. This view can not be regarded as a final conclusion.

"The title has been downloaded." Cheng Nuo heard the voice coming from his ear and turned his attention to this side.

All of them leaned down slightly, staring at the computer screen and scanning each topic carefully.

Question a is about the driving of cars on the road.

B, about the placement of wheelchairs in the airport waiting room.

Question C is about the medical system of the United States under big data.

Sure enough, the three MCM topics all have a strong "American style", which can be said that the Chinese players are very unfriendly.

Especially in question C, you should know that the medical system of the United States is quite different from that of China.

In this way, if the Chinese team chooses this question, it will take at least three or four hours to look up relevant information on the Internet to learn about the medical system of the United States.

It's really a bit of a luxury in a modeling contest where time is so precious. Unless some teams are very good at big data modeling, no one will choose this topic foolishly.

Cheng Nuo can almost foresee that of the six topics, this one is probably the least selected by the team.

After all, of the more than 30 countries participating in the competition, only the U.S. players have a thorough understanding of this aspect, so they don't have to waste unnecessary time.

Cheng Nuo went on to look at the last three questions.

The evolution and influence of the survey Association's information network.

Construction of sustainable city.

F. modeling of refugee immigration policy.

"Which one shall we choose?" Cheng Nuo's team mate asked.

The Foreign Language Institute's teammate did not open his mouth and turned his eyes to Cheng Nuo. The meaning is self-evident.

Although Cheng Nuo's strength has a skeptical attitude, but after all, Cheng Nuo is the team leader in name, at this time, we still need to listen to his opinions.Cheng Nuo pondered for a few seconds, slowly opened his mouth, "my personal opinion, choose a. Of course, if you don't want to, we can change it. "

He is an indifferent attitude.

In any case, he can come to all six subjects, and there is no pressure to reach the level of O prize (grand prize) guaranteed before. The difference is only a matter of time.

For example, choose C question, although Cheng Nuo's ability is big again, also need a period of time to consult relevant data. This is not consistent with Cheng Nuo's idea of saving time.

Therefore, his personal opinion is to choose the road vehicle driving problem which is not unfamiliar to the three people.

The road driving rules of the United States and China are the same, both of which drive on the right.

After thinking for a while, the two team-mates nodded, "OK, choose a question."

In less than five minutes, the topic of their group was determined.

Next Officially started!

Cheng Nuo is responsible for modeling, the team member of the design institute is responsible for programming, and the team member of the other institute is responsible for writing papers.

Each of them performs his or her own duties.

Cheng Nuo sat in front of the computer and looked at the modeling topic from beginning to end:

[in some countries where cars are required to drive on the right, a rule is often used on multi lane highways: drivers are required to drive in the right most lane when driving. In addition, they should move to the adjacent lane on the left, overtake, and then return to the original driving Lane (i.e. the rightmost Lane), please establish and analyze a mathematical model to analyze the performance of this rule in light and heavy traffic (i.e. when there are fewer vehicles and more traffic congestion)? You can study the balance between traffic flow and safety, the effect of the maximum or minimum speed limit (i.e., too low or too high speed limit) 】

different from the other five topics, which are new urban construction and refugee immigration, this is a very solid topic. Cheng Nuo estimates that there are not a few groups that choose question a.

However, the o prize is not evenly allocated to each topic, but to the winner. Therefore, it is possible that all the 20 o awards will appear in one topic.

This is also the reason why the two team-mates can happily agree to choose question a.

After reading the topic carefully, Cheng Nuo didn't rush to start modeling.

You can't eat hot tofu in a hurry.

Before modeling, we must do enough preparation.

He needs to find some papers and books to learn some knowledge about road traffic.

It won't take long, about half an hour.

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