It is essential to have an adequate understanding of the fluid-structure in a porous medium since this gives direct information about the processes necessary to extract the liquid and the likely yield. The concept of symmetry is one of the petroleum engineering issues that has been used to provide an analytical analysis for modeling fluid dynamics through porous media, which can be beneficial to validate the experimental field data. Tight reservoirs regarding their unique reservoir characterization have always been considered as a challenging issue in the petroleum industries. In this paper, different injectivity scenarios which included chemical and thermal methods were taken into consideration to compare the efficiency of each method on the oil recovery enhancement. According to the results of this experiment, the recovery factor for foams and brine injection is about 80%, while it is relatively 66% and 58% for brine-carbon dioxide and brine-nitrogen, respectively. Consequently, foam injection after water flooding would be an effective method to produce more oil volumes in tight reservoirs. Moreover, KCl regarding its more considerable wettability changes has provided more oil production rather than other scenarios.
With the progress of society and the rapid development of science and technology in the world, the 21st century will be the multimedia era. Therefore, physical education teaching in colleges and universities should take the initiative to seize the opportunity, adapt to social needs, change traditional teaching concepts, introduce modern teaching methods into physical education teaching, enrich physical education teaching content, stimulate students’ interest in sports knowledge and sports technology learning, broaden knowledge horizons, improve teaching quality, and promote the development of physical education. The traditional teaching mode restricts the development of physical education (PE) in many aspects, and one of the important contents of modern teaching methods is to master and use modern teaching equipment and means. Therefore, it is necessary to timely change the educational thought, update the educational concept, and actively explore and research new teaching methods that are suitable for the educational concept of the times, to ensure the adaptability, scientificity, and creativity of teaching methods. Based on the above background, the research content of this paper is the application of multimedia CAI technology in PE teaching. Using the methods of document interviews, analysis and induction, and online retrieval, on the basis of reading a large number of professional theoretical books on physical education, multimedia technology, and modern teaching and reform, the application of multimedia technology in physical education teaching in colleges and universities is analyzed. The application is researched at the theoretical level. This paper takes PE college 2019 students as the simulation object. The results show that the pass rate of professional English after the experiment is 15.33% higher than that before the experiment.
Judging from the current online teaching practice of higher physical education basic theory courses, there are many problems such as lagging theory, unclear models, confusing mechanisms, outdated methods, and lack of resources, resulting in the low interest of students. Basic theory courses are studied. The phenomenon of skipping class and being late is common, which seriously affects the improvement of the comprehensive quality of physical education students. Therefore, it has become an urgent problem for the majority of higher sports workers to develop learning resources for basic physical education courses and realize the innovation and application of the teaching mode of higher sports online courses. Compared with the traditional teaching method, the students’ physical education teaching performance is improved by about 30%, and their personality is fully developed. Linking teacher performance to changes in student performance parameters can effectively improve teacher motivation. This shows that under the background of intelligent sensor network, the physical education network course can effectively improve the teaching efficiency.
Human sport action reconstruction is the current hot issue of image processing, against the feature of the problem, a new human action reconstruction method base on the combination of LLE and KRR is proposed. First, extract the human action framework against the color and deep information of the image and establish action training set and then transfer the training set into the motion vector library, calculate the low dimensional manifold using LLE algorithm and conduct correlation analysis to the manifold data, and finally make the predicted low dimensional manifold convergence action point mapped irreversibly to the low dimensional Euclidean space. This is the first application of KRR algorithm to solve traditional dimensionality reduction mapping irreversibility, so as to make the action reconstruction realized. The results show that: the construction action obtained by the convection action point is ideal, as the action process of the different degrees of freedom; the proposed human sport action construction has very good results.
Nowadays, due to the rapid development of social economy, many rural labors have flowed into more developed cities, resulting in more and more left-behind children(LBC), which is an urgent problem in our country's life. Although there are many researches on LBC, there are few researches on LBC's physical and mental health(PMH).In this regard, this paper studies whether physical education and exercise are very important for improving PMH in LBC, and collects and classifies data on PMH in LBC by referring to the literature. Interviews are used to collect the true thoughts of LBC and to understand PMH. The questionnaire survey was used to investigate the PMH status of LBC, and objectively and comprehensively collected the PMH status data of LBC. Finally, the data obtained are statistically analyzed by the method of several examples. This paper studies the situation of LBC participating in extracurricular sports activities and makes a comparison with non-LBC. The results show that the LBC who take part in more after-school sports training have better PMH, more cheerful personality, more love and compassion, can quickly adapt to a new environment, and are emotionally stable. They can handle things calmly and develop their individual emotions well. In addition, the probability of PMH problems of non-LBC is smaller than that of LBC. Through the research and analysis of sports and PMH of LBC, it is found that sports play a positive role in promoting the PMH of LBC. Therefore, physical education is of great value to promote the healthy development of LBC.
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