Small C 1 -smooth perturbations of skew products and the partial integrability property

In order to solve the post evaluation system construction of high-efficiency and water-saving irrigation projects, this paper puts forward the research significance of post evaluation technology of high-efficiency and water-saving irrigation projects, summarizes the research status and development trends of post evaluation of projects at home and abroad, and analyzes the existing post evaluation theories and research methods. Based on the actual situation of high-efficiency water-saving irrigation projects, the post evaluation index system of high-efficiency water-saving irrigation projects is constructed from five aspects: construction process, operation management, economy, impact, goal and sustainability by using the method of combining expert questionnaire survey and statistical theory; Study the advantages, disadvantages and scope of application of the existing post project evaluation index weight determination methods and evaluation methods, put forward five single post evaluation standards: post construction process evaluation, post operation management evaluation, post economic evaluation, post impact evaluation, post objective and sustainability evaluation, determine the evaluation process and form five single post evaluation models. Based on the five individual post evaluation models, the project success evaluation model is constructed to form the “5 + 1” post evaluation model of high-efficiency water-saving irrigation project. Taking a high-efficiency water-saving irrigation project as an example, the application process of post evaluation index system and evaluation model of high-efficiency water-saving irrigation project is given, and the feasibility of applying the index system and evaluation model proposed in this paper to production practice is analyzed.

Section: Experiments and Discussionmentioning

confidence: 99%

Construction of comprehensive evaluation index system of water-saving irrigation project integrating penman Montei the quation

Wang

2022

“…Compared with the dispersion method, the percentile method not only has the advantages of the dispersion method, but also uses the median as the reference value and other percentiles as the discrete distance to divide the evaluation grade, instead of taking the average as the reference value and the standard deviation as the discrete distance. It is applicable to all kinds of data with normal distribution or non normal distribution, and also reduces the link that the normal test must be carried out on relevant data because the distribution characteristics of data are not clear before formulating the evaluation standard [13]. Especially for non normal distribution data, it can be evaluated more accurately.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Analysis of technical statistical indexes of college tennis players under the win-lose regression function equation

Mao

Lou²,

Zhang

2022

In order to study whether the athletes' special physical fitness and competition load reflect the inherent attributes of sports, this paper puts forward the research on the characteristics of sports, special physical fitness and competition load, and takes the college tennis players in a province as the object. Using the methods of literature, video analysis, experiment, investigation and mathematical statistics, this paper discusses the basic connotation of special physical fitness and competition load, and preliminarily establishes the evaluation index system of special physical fitness and competition load. This paper objectively evaluates the special physical fitness and competition load level of college tennis players in Jiangsu Province, provides the basis for the training and competition of college tennis players, and has certain value and significance for enriching and expanding the tennis training theory. The main conclusions are as follows: calculated from the experimental results, the blood lactic acid level of athletes from the beginning of the competition to the end of the competition is 4.77 + 1.62 mmol / L for men and 4.11 + 2.13 mmol / L for women, which is 2–3 times that of quiet. The change of blood lactic acid is related to the energy system used during exercise, and also reflects the metabolic rate of muscle fibers.

“…The transformation function of the node selects the sigmoid function. The initial weight is between (-1, 1), which is randomly generated [15]. The learning step size is determined to be 0.1,Figure 4 is the learning result, and Figure 5 is the error curve.…”

Section: Figure 3model Diagram Of Teaching Quality Evaluation Based O...mentioning

confidence: 99%

Analysis of the Teaching Quality of Physical Education Class by Using the Method of Gradient Difference

Li¹,

Aldulaimi

Bouldoukian

2022

In order to have a more in-depth understanding of the current classroom efficiency and quality of physical education classes, the author uses the extreme difference method to analyze the teaching quality of physical education. Train the network with a large number of classified samples, so that the network system with analysis ability can objectively evaluate the teaching quality of teachers; The Labview software tool is used to solve the calculations of the sigmoid function, the gradient descent method (δ learning rule), and the mean square error used in the algorithm, so that the constructed model can realize self-learning and evaluation functions. We designed an education quality evaluation model for the characteristics of education quality evaluation. Based on previous research and practice, we have compiled an evaluation index system that includes 3 primary indicators and 10 secondary indicators. As a result of conducting experiments based on this index system and the quality evaluation model of education, it became clear that this model is effective.