Chapter 36 Going home for the New Year
Establishing a mathematical model for this information security to decipher the other party's encrypted messages Zhang Weiping never gave up.
Because there are countless variations in both functions and algorithms, it is far from enough to rely solely on manual deciphering calculations.
The most important thing about information is real-time.
Especially in this situation, if the encrypted message cannot be deciphered in time, it will not be of much value.
Because even if it is deciphered later, other people's activities and information transmission have long been over.
But it is not that easy to establish a mathematical model for an unknown mathematical law.
If you want to model, you must first understand the actual background of the problem, clarify the purpose of modeling, collect all necessary information, and try to clarify the characteristics of the object.
Then, based on the characteristics of the object and the purpose of modeling, necessary and reasonable simplification of the problem is made, and assumptions are made in precise language.
Then analyze the causal relationship of the object based on the assumptions made, and use the inherent laws of the object and appropriate mathematical tools to construct equations or other mathematical structures between various quantities.
It is usually difficult to establish a mathematical model for a problem, let alone the encryption methods specially designed by the United States.
They need more information and data.
And as my colleague just said, cultivating a group of mathematicians in information security is a must for a big country.
The 21st century has already entered the information age. There is no doubt that various algorithms and encryption programs are important to information security.
"However, if these functions and algorithm questions parsed from encrypted messages are put into training camps such as National Mathematical Competition and Modeling Competition, it will affect the training effect."
Thinking of this, Zhang Weiping frowned slightly.
Whether it is a mathematics Olympiad or a modeling competition, the ultimate goal of students participating in these competitions is to get a good ranking in these world-wide competitions, so as to have the opportunity to enter a higher platform for learning.
He cannot delay the future of these students just for the sake of deciphering information.
"It seems this method won't work."
Zhang Weiping shook his head, temporarily put down the thoughts in his mind, and prepared to pack up the information and leave.
A mathematics professor next to him saw him stunned for a long time and curiously asked what was wrong.
Zhang Weiping expressed his thoughts, and the mathematics professor looked at him in surprise.
"Hey, I thought it was something. You can just extend the training time for the national gathering and modeling competition for a while."
Zhang Weiping was stunned for a moment and clapped his hands fiercely: "Why didn't I think of this? This method is completely feasible."
The training time for the National Mathematical Olympiad Team is generally in March every year.
Sponsored by the Mathematical Society Olympiad Committee, the training lasts for fifteen days, which is half a month.
In half a month, two screenings were conducted to turn the original 60 training seeds into six national team members, and then train these six seeds to participate in the IMO competition.
The advantage of this is that it will not delay other students from taking the college entrance examination.
Because in addition to the training camp for National Congress members, the annual National Congress is the same as the Golden Autumn Camp of the two top universities. You can actually register and pay to participate.
The registration conditions are set at the national second level that competes in the national finals every year, and a certain amount of national training fees need to be paid.
After all, food and accommodation are centrally managed by the Olympic Committee of the Mathematical Society, so money is still needed.
Although there is a fee, this is a good opportunity for those contestants who have not been able to enter the national competition.
If they get excellent results in the training and examinations of Guoji, they may be spotted and admitted by top universities, and they can also get extra points in the college entrance examination.
This is the so-called resurrection match for some students who devoted themselves to the competition but failed in the exam. As for the sixty training seeds, there is no need to pay fees, they are selected by the Mathematical Society.
Therefore, extending the national training time for a period of time is indeed a feasible method.
However, you have to consider and calculate how long it needs to be extended to not delay the training effect.
Star City, City No. 1 Middle School.
The formerly bustling campus has become a bit deserted these two days. The first and second grade students have left, leaving only the third grade students still hanging on.
But today is the last day.
After the head teacher of each class explained the holiday matters, there was a burst of cheers in the classroom.
Crowds of people rushed to their dormitories carrying schoolbags, and Xu Chuan was no exception. He hadn't been home for almost half a year.
After sorting out his clothes and books, putting on his schoolbag and a black suitcase, he got on the bus to Yue County.
After a bumpy journey that took nearly three hours, the bus finally stopped at the edge of the national highway.
Xu Chuan got out of the car and looked at the newly built cement road at the entrance of the village, feeling a little excited and a little nervous.
The familiar buildings and farmland on the concrete roadside seem to have never changed, they have always been the same as in the memory.
Dragging his suitcase, Xu Chuan took a deep breath and set foot on the road home.
Along the way, from time to time, villagers who were preparing for the New Year or basking in the sun at the door greeted him and asked with a smile whether the future college student was back.
Xu Chuan responded one by one, and before long, he had arrived at the door of his house.
On the familiar cement floor, a middle-aged woman was squatting by the well and busy doing something. She seemed to sense something. She looked up and looked around, and then she became pleasantly surprised.
"Chuan'er!" The woman stood up in surprise, wiped the water stains on her hands on her clothes, and a touch of surprised joy appeared in her pupils.
"Mom, I'm back!"
Xu Chuan shouted, with tears in his eyes. After several years, he finally saw his parents again and stood in front of them again.
"You kid, why didn't you call in advance when you came back?"
Wu Lian complained excitedly, and without any explanation grabbed the suitcase's lever from Xu Chuan's hand, turned around and shouted towards the two-story old red brick house: "Old Xu, Old Xu, hurry up Go buy a fish and come back. Your son is back.”
"Huh? Chuan'er is back?"
On the balcony on the second floor, Xu Jianguo popped his head and looked over in surprise. There was still a little sawdust in his hair, and he seemed to be repairing something.
"Dad."
Xu Chuan raised his head and shouted, and received an immediate response. At the same time, another little head popped up on the balcony.
"Brother, you are back."
Xu Xiao poked his little head out on the balcony and shouted excitedly, and then there was a thumping sound coming downstairs, and he rushed over and hugged Xu Chuan's arm.
"How long has Xiaoxiao been on vacation?" Xu Chuan smiled and touched his little sister's head. This follower who had been sticking to his butt since childhood has grown up.
"It's almost ten days. Brother, you have grown a lot. Have you taken hormones?"
Xu Xiao looked up and looked at Xu Chuan, who was almost a head taller than her, with wide round eyes, feeling a little incredible.
Obviously there wasn't such a big gap between the two of them last time they met.