Nyquist 曲线与时间序列的平稳大学以前，是一个圆外推；之后从事某

<br>Before the University of Nyquist curve and time series was stable , it was a circle extrapolation; afterwards engaged in the research of a certain basic discipline, it continued to extend along a certain radius of a circle, and may reach far away; while multi-discipline is a moment, It is a face (decision); when multiple disciplines work together, the entire circle can become very large, pushing the boundaries far away. <br>Application of finance and industry: For example, the best investment decision can be found through Fisher's law of separation, but the distribution of investment in various production factors and production links involves industry knowledge. (From the knowledge and experience of the industry, it is reasonable to judge which enterprise is doing well, which is in line with the logic of the times and industrial development.) <br>Human memory will always decay exponentially, and the level of primary use is accumulation, that is, when I meet in the future When a problem is encountered, I will recall a solution or possible strategy/or there is this problem, I can quickly recover to the level I have reached; the highest level of application is methodology, starting from methodology, On the one hand, you can see through its underlying logic to deconstruct and split, on the other hand, you know from which direction you can start, what strategy to use to solve, and the rest is the basic work (forgetting what to do) <br>will not do: very Sorry, teacher, I did ignore this before, I haven't studied it. I will self-study this piece of knowledge and study it thoroughly to improve my knowledge system and structure. I am very grateful to the teacher for his reminder. At the same time, I also hope that in the future, I will have the opportunity to get the guidance of the teachers of the School of Economics and Management, to look at the XX problem with loftiness, and stand on the shoulders of giants to have a deeper insight into this and related issues. <br><br>The problem of anchors: the anchor of engineering (mathematical and scientific logic), the anchor of investment (the business model and the logic behind the operation of the industry), the anchor of life (values), the anchor of character: integrity, integrity, and kindness

Nyquist curve and time series smooth<br>Before the university, it was a round extrapolation; then engaged in the study of a certain basic discipline, which extends along a certain radius of a circle and may reach a long way;<br>Application of finance and industry: For example, the best investment decisions can be found through Fisher's separation law, but the distribution of investment in various factors of production and production involves industry knowledge. (From the knowledge and experience of the industry, to determine which enterprise is doing well, reasonable, in line with the logic of the times and industrial development)<br>People's memory will always be exponentially decayed, the primary level of use is accumulation, that is, when I encounter a problem in the future, will recall a solution or possible strategy / or there is a problem, I can quickly return to the level I once reached;<br>What not to do: I'm sorry, teacher, this piece I really ignored before, did not study. This knowledge I will later self-study its thorough study, to improve my knowledge system and structure, thank you very much for the teacher's reminder. At the same time, I also hope that the future will have the opportunity to get the guidance of the management college teachers, high housing construction to look at xx problems, standing on the shoulders of giants can produce a deeper insight into this issue and related issues.<br><br>Anchor problems: anchors in engineering (mathematical and logical science), anchors of investment (business models and the logic of the industry's operation behind them), anchors of life (values), anchors of character: integrity, integrity, kindness

Nyquist curve and stationarity of time series<br>Before the University, it was a circle extrapolation; after that, in the research of a basic discipline, it would continue to extend along a certain radius of a circle, which may reach far away; while multidisciplinary is a moment, which is a surface (trade-off); when multiple disciplines work together, the whole circle can become large, and the boundary can be pushed far away.<br>Application of Finance and Industry: for example, the best investment decision can be found through Fisher's law of separation, but the allocation of investment in various production factors and production links involves industry knowledge. (based on the knowledge and experience of the industry, it is reasonable to judge which enterprise is doing well, which conforms to the logic of the times and Industrial Development)<br>People's memory always decays exponentially. The primary level of application is accumulation, that is, when I encounter a certain problem in the future, I will recall some solution or possible strategy / or I can quickly recover to the level I have reached when I encounter this problem. The highest level of application is methodology. Starting from methodology, on the one hand, we can see through its underlying logic To deconstruct and split, on the other hand, we should know which direction to start from and what strategies to solve. The rest is to carry out the basic work (how to forget)<br>What can't I do: I'm very sorry, teacher. I really ignored this part before and didn't study it. I will study this knowledge by myself and study it thoroughly to improve my knowledge system and structure. Thank you very much for your reminding. At the same time, I also hope that in the future, I will have the opportunity to get the guidance of the teachers of the school of economics and management, look at the XX issue from a strategic perspective, and stand on the shoulders of giants to have more profound insights into this issue and related issues.<br>Anchor problems: the anchor of Engineering (Mathematics and science logic), the anchor of investment (the logic of business model and its underlying industry operation), the anchor of life (values), the anchor of character: integrity, integrity and kindness<br>