From small town academic to chief scientist

Although the village chief's words were a bit outrageous, as a gentleman, Zhou Yi couldn't directly ask what the gossip was.

Instead, he asked in a roundabout way.

For example, an elderly widow in Nishimura wants to find a wife to have an evening love affair with. Everything has been agreed upon, but the only thing left to do is how to tell her children.

Another example is whose chicken was mistakenly eaten by someone else, or a child of a certain family peed in a well of a certain family.

The progress of repairing the new house at home was faster than Zhou Yi thought.

Grandma's health also began to slowly improve.

Regarding this news, some people said that the old Chinese medicine doctor's medicine was effective, while others said that Zhou Yi had become a good man, and the bad breath that had not been released at the beginning came out, and he naturally recovered.

Some people say it is a combination of the two, and there are different opinions.

On January 18th, the US competition officially started.

There are 6 questions in total, each with its own style.

Zhou Yi still chooses question A,

In the past, Question A in each year mainly focused on the fields of traffic flow simulation, communications, heat transfer, spread of infectious diseases, and aerospace.

The mathematical models that can be established mainly include: ordinary differential equations, partial differential equations, cellular automata, mechanism analysis, optimization models and mathematical physical modeling, etc.

After the topic was downloaded at 6 o'clock in the morning, I started to communicate with Tian Yiguang via voice. As for Xia Xue,

Zhou Yi asked her to come later, and this girl ran to her house every day these days.

It's no use coming here, anyway, my aunt is here to help make breakfast.

The questions are all in English, but with Zhou Yi’s current English level, they are basically not difficult.

No translation software is needed, just translate directly.

The general meaning of the title is as follows:

Develop a model that can be applied to any type of rider, determining the relationship between a rider's position on the course and the force applied by the rider.

There is a limit to the total amount of energy a rider can expend throughout the course, as well as limits accumulated from past aggression and exceeding power curve limits. Things to consider are:

The power curve provides the maximum power a rider can maintain for a given length of time.

The more power a rider generates, the shorter the rider can maintain that power before having to reduce power and recover.

The rider can choose to briefly exceed the limit on the power curve, but the rider needs additional time to recover at lower power levels.

It used to be that a rider's power output was important and as the race went on, the rider would get more and more fatigued.

Riders always want to minimize the time it takes to cover a given distance.

These are all the information Zhouyi obtained from the questions.

The question is quite satisfactory to Zhou Yi. After a brief description, Zhou Yi also made an outline.

There are too many questions. If you accidentally miss a small question, you will basically miss the O Award, let alone the naming award.

This time the competitors are not only domestic but also foreign undergraduates.

Everyone has let it out. If Zhou Yi loses, maybe the Bangzi Kingdom and the Foot Basin Kingdom will get involved.

Who can stand this?

At least Zhou Yi couldn't bear it anymore, and it wasn't because of that W.

The first problem is to define the power curves for the two types of riders. One rider should be a timing expert and the other rider should be a different type of rider.

The second question is to apply your model to various timed events; the Olympics where the explicit requirement is the footbath, and the UCI World Championships time trial in Flanders, Belgium.

The third issue is to determine the potential effects of weather conditions, including wind direction and strength, to determine how sensitive the results are to small differences in weather and environment.

The fourth question is presumably, determining the sensitivity of the results to rider deviations from the target power distribution. Discuss how to extend your own model.

This year’s question A seems to be deviating from the above-mentioned direction, but it actually belongs to the direction of mathematical physics.

Some are also biased toward decision-making.

After actually analyzing the problem, you will have a clear understanding that it is basically about mathematics.

So it is mathematical modeling in the end, not physical modeling.

In the past Question A of the US competition, I almost spent my own money to help Chou Country solve some problems.

Gathering global undergraduate elites and a few graduate students to solve some of China's problems.

Therefore, many people joke that they spend money to solve problems for their opponents.

But there is nothing we can do about it. The blockade of technology forces people to find ways to learn and return.

However, question A has changed this year, which somewhat surprised Zhou Yi. This is not helping Chou country solve its problems, but helping other countries solve problems, and they are all problems of the past.

This made Zhou Yi feel a lot better.

After Zhou Yi had an idea of ​​the topics and problems in his mind, he began to think about how to build a model.

To stand out from the crowd, you must not choose a model frivolously.

In the past few days, Xia Xue helped make up classes in the morning and afternoon.

Zhouyi's participation in the global competition has spread among these junior high school students and the entire village.

This made them trust Zhou Yi even more.

Global competition is such a distant thing for them, something they can't even imagine.

For laymen who don't know the US competition, it is of course shocking. In addition to 6, it is still 6.

But Zhou Yi is currently participating in this competition and may also receive rewards.

This made the villagers even more convinced and respectful.

From the initial sarcasm and sarcastic remarks, Zhou Yi now conquers this group of villagers with his strength.

What is strength? This is strength.

Zhou Yi has almost become the idol of other people's children among this group of people, and the idol of all the children in the village who are studying.

As for Xia Xue, she is also a super academic. How can she not be good at mathematics and physics in junior high school? Even in high school mathematics, she can do 140+ at her current level.

To be able to score 680+, there must be something.

Tian Yiguang is indeed as he said before. He is not a gangster, but he is actually quite capable. At least he does a good job in art work.

For beauty competitions, you must have artistic modeling.

Some pictures that are not beautifully produced will not win awards, let alone championship awards such as naming awards.

The exquisiteness of models, programs, papers, and pictures must basically reach the top.

The first three things of Zhouyi can be solved by one person, but things like PS have to be left to Tian Yiguang.

Some rules can only be learned to adapt to before they have the ability to change.

Mathematics is a subject that pursues truth and beauty, and it must have strict requirements.

In one morning, Zhouyi made a list of ideas for all problems, what methods and models to use,

Basically there is a number.

For the first question, Zhou Yi first established a fatigue physiological model to describe the rider's power curve, which describes the rider's average power output as a function of sustained output time.

Secondly, from the perspective of aerobic respiration and anaerobic respiration, fully considering the energy limitation and energy recovery process, a Fa-tigue model of aerobic and anaerobic energy was established.

Then the ordinary least squares method can be used to fit the model and verify the effectiveness of the model. Taking into account different types and genders of riders, the power curves of different riders can be obtained and the relationship between their characteristics and node parameters can be explored. relation.

By doing this, the first question can basically be perfected.

The order of writing in Zhouyi is still planned to follow the steps of the national competition. The summary will be written last and the programming will be placed after all models are established.

The programming software still uses MATLAB.

Moreover, Zhou Yi does not intend to write a Chinese paper first and then an English paper, but directly writes an English paper.

At the beginning, Zhou Yi published many SCI papers, and coupled with the accumulation of English vocabulary, he already had enough level for Zhou Yi to write in English without any pressure.

This time, Zhou Yi wants undergraduates around the world to know who is the emperor among undergraduates.