Table of Content

15 June 2020, Volume 5 Issue 6

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A New Estimation Method of Regression Parameter Applied to the Total Least Squares Regression Model

Cao Bangxing

2020, 5(6):  1-6. 

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The adjustment model based on total least squares is superior to the ordinary least squares when coefficient matrix and
observation vector include errors. Singular value decomposition method and Euler-Lagrange approximation algorithm are two
commonly used regression parameter estimation methods for total least squares, but its derivation process involves Eckart-Young-
Mirsky matrix approximation theory, which is complicated and difficult to understand, making many learners feel unacceptable, which
limits its application. Therefore, this paper introduces a new iterative algorithm for regression parameter estimation. The theoretical
basis is rigorous and sufficient, the derivation process is clear and easy to understand, and the specific calculation is also easy to
program. Practical examples are used to verify the feasibility and effectiveness of the method. The test results show that the linear
regression model obtained by the algorithm has a good fitting effect.

An Intelligent Recognition Method for Micro-Insect Images

Luo Guilan, Wang Xi, Hao Hongjun, Zhang Mei, Pan Xiaoxiong

2020, 5(6):  7-13. 

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Insects in the wetlands of Erhai Lake are small and difficult to identify. In order to improve the efficiency of intelligent
insect data processing and classification, an intelligent insect identification method was designed for the Erhai Lake wetland insects.
The method realizes insect image classification learning through SVM-AdaBoost machine learning model. Based on IOS mobile
platform, this paper adopts MVC（Model View Controller）design pattern and uses Swift language to realize the functions of insect
image acquisition, display, recognition and so on. The real-time performance test shows that the method has good reliability and meets
the real-time requirement of intelligence. Through the evaluation of insect image recognition, the result shows that the algorithm can
recognizewetlandmicro-insectsintelligently.Itsrecognitionaccuracyandcallbackratereached 92%,andtheaccuracyratereached 91%.

Approach to User Rating Correction Based on Emotional Analysis of Comments

Sun Lihui

2020, 5(6):  14-17. 

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In order to solve over-centralized distribution, low credibility and other problems in the rating of e-commerce websites,
this paper proposed an emotional analysis based on the content of comments. Namely, feature words and emotional words were
extracted to establish the feature vector of the comments and calculate the emotional tendency. On this basis, the original ratings were
corrected to obtain the rating better reflecting the real thoughts of users so as to improve the recommendation accuracy of the
recommendation system.

Ubiquitous Mobile Teaching: Teaching Reconstruction and Practice Based on TPACK Model

Zhao Yuqin,Huang Hefei

2020, 5(6):  18-22. 

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Under the background of "Internet+ Education", the TPACK model is studied, and the three elements of the model are
reconstructed into TCK, TPK and PCK, i.e. teachers′ information teaching ability. This paper reconstructs teaching from three aspects:
teaching mode, teaching resources and teaching strategies, and designs a ubiquitous mobile teaching mode based on TPACK model.
Using "Programming Basics" as a practical course, using Rain Classroom wisdom teaching tools to collect and display data, and after
analyzing the teaching data, the effect of the ubiquitous mobile teaching model is verified, and the key to the realization of wisdom
teaching is prospected.

Analysis of Examination Questions for Mathematics Special Post Teachers of Yunnan Middle Schools#br# in Recent Years

Lu Ping, Zhang Lu, Li Aizhen, Shi Yufeng, Zhang Chaoyuan

2020, 5(6):  23-28. 

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Based on Implementation Plan for Special Posts School Teachers for of the Rural Compulsory Education in Yunnan
Province issued in 2012, examination questions for mathematics special post teachers in Yunnan province from 2015 to 2018 are
analyzed from the structure of the examination papers, test points, test scores, frequent test points, and the features of the test questions,
etc. It can help candidates understand the direction of the test questions more efficiently, grasp the difficult and important points of the
examination questions quickly, and improve the test passing rate.

Study on Estimation of Gasoline Engine Oil Film Dynamic Parameter Based on Chaos-RS-RBF#br# Algorithm

Xu Donghui, Xu Xiangyang, Xu Xinren

2020, 5(6):  29-36. 

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 In view of the highly complex nonlinear characteristics of the gasoline engine dynamics system, the Chaos-RS-RBF

algorithm is proposed to identify the dynamic parameters of the oil film. On the basis of judging the chaos characteristics of the engine

dynamics system, the inherently complex nonlinear characteristics are restored through the phase space reconstruction technology to

obtain a multi-dimensional state space time series, and a large number of redundancies are removed using rough sets（RS）. Finally, the

RBF algorithm is used to identify the multi-dimensional state space time series to obtain the oil film dynamic parameter identification

value. The simulation results show that compared with the least square method and RBF neural network, the Chaos-RS-RBF model has

higher accuracy and has a good reference for practical engineering applications.

Influence of Different Renewal and Transformation Models on the Overall Performance of#br# Traditional Bai Folk House in Dali

Zhao Jing, Li Xiaoqi

2020, 5(6):  37-41. 

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In order to solve the different requirements of traditional houses to adapt to modern residential functions and increase the
durability of structures, Dali has carried out a variety of different renovation practices for traditional Bai folk houses. This paper studies
and analyzes the adverse effects of new materials and new construction methods on the durability and safety of traditional residential
buildings. In order to provide a feasible direction for the renovation of traditional houses, this paper puts forward some effective
solutions.

Study on the Synthesis and Property of Poly（L-lysine）-Block-Poly（glycine）

Zhang Yuxin, Jiang Shizhi,Li Tao,Wang Jiwei

2020, 5(6):  42-45. 

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Objective: To prepare polyamino acid micelles with functional groups and appropriate particle size by a simple and
efficient method. Methods: Using Lys（Z）-NCA and Gly-NCA as raw materials, a series of glycine-lysine copolymers Poly［KmGn］with
side-chain containing amino were prepared by ring-opening polymerization of NCA. The structure of the product was analyzed by
nuclear magnetic resonance（1H-NMR）. The morphology, particle size and distribution of the synthesized poly（amino acid）copolymer
were studied by using scanning electron microscopy（SEM）and dynamic light scattering（DLS）. Results: The synthesized polyamino
acid copolymers were in accordance with the molecular design. Different polyamino acid copolymers could be self-assembled into
spherical micelles with particle size of less than 200 nm and a uniform particle size distribution, and the particle size of the micelles
changed with the composition and content of polyamino acid monomers. Conclusion: A series of polyamino acid nano-micelles have
been prepared successfully, and the particle size of the micelles can be adjusted by changing the molecular composition of polyamino acid.

Study on the Influencing Factors of the Minimum Trapping Effort of Infrared Camera

Zhang Yongjun,He Yuchao, Tan Kun, Fang Yihao,Chen Yao, Xiao Wen, Huang Zhipang

2020, 5(6):  46-53. 

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 Objective: To understand the effects of vegetation type, elevation and season on the minimum trapping effort（MTE）required for infrared camera, i.e. the duration of the monitoring. Methods: This camera trap study was located in the Lanping Yunling Provincial Nature Reserves at the elevation of 3 400 m and the vegetation types of shrubs, constant/lost mixed forest, the coniferous forests and coniferous and broad-leaved mixed forest, and the vegetation type of constant/lost mixed forest and the elevation of 3 100,3 400, 3 700 m respectively. Results: During the 1-year monitoring period, the cumulative effective shooting was 3 785 d, and 508

independentphotograph（IP）wereobtained.Amongthevegetation typesand elevations,onlytheshrub an the highestelevation（3 700 m）

camera trap reached the MTE. The species diversity of the vegetation types（Sørenson Index: S Max = 47.62%, S Min = 25.00%）and altitude

（Sørenson Index: S Max = 50.00%, S Min = 17.65%）were lower. All camera sites: The number of species, IP account and accumulation rate

during the rainy season were higher than the dry season, and the similarity of species diversity in the rain/dry season was only 43.14%.

Conclusion: In the species diversity monitoring study, the monitoring duration can be reasonably reduced at the shrub and high-

altitude sites, but in general, the monitoring period should be no less than 1 year, and the rainy and dry seasons should be included.

More vegetation types should be covered and altitude resolution should be increased.

Analysis and Development Proposals on Trans-Region Conservation in China

Dai Lujiao,Wang Haohan,Xu Huiming,He Yuchao,She Rong,Xiao Wen

2020, 5(6):  54-60. 

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Transboundary conservation has profound significance for the biodiversity conservation in the boundary, and is becoming a
hot topic in the development and study of reserve network. In recent years, studies on transboundary conservation in foreign are
becoming more and more mature, and the studies in China have also been improved. However, the concepts of different transboundary
types have been confused, and studies on trans-region cooperative conservation within the country is often ignored. First of all, this
study defines the concept of different transboundary cooperative conservation. Bibliometric analysis is used to analyze the trend of
transboundary study on environment or resources, and then statistical analysis is conducted on the numbers of trans-region reserves
and mutual-adjacent district boundary reserves in China. The results show that the study and cooperation of trans-region conservation
are rare in China, but trans-region reserves and mutual-adjacent district boundary reserves are common, and the demand for the
cooperation of trans-region conservation is strong. Finally, this study puts forward proposals on the study and cooperation of transregion
conservation in response to establish natural reserve system with national park as the main body, and is committed to meet the
needs of ecological civilization construction and sustainable development strategy in China.

Research on the Development of Sports and Leisure Featured Towns from the Perspective of#br# "Five Development Concepts"

Liu Bo, Liu Tingting, Liu Xiaohu

2020, 5(6):  61-66. 

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With literature review and logical analysis, this paper explains the connotation of sports and leisure featured towns, the
notion of "five development concepts" and their value coupling, and analyzes the opportunities, difficulties and development paths in the
development of such towns. This paper holds: the development of sports and leisure featured towns in China is facing the opportunities of
increasing national prosperity, fitness awareness, government support and active social responses, but there are also difficulties such as
serious shortage of sports industry talents, planning layout disorder and blind copy, large capital investment and long return period, etc.
A new path is proposed to inject new kinetic energy into innovative development, coordinate development explore new patterns, build
new models for green development, open up new spaces, and eventually return to the purpose of shared development for all.

Revival and Cultural Reproduction of Erhai Osprey Domestication and Hunting Activities

Cao Chong, Liu Dejun

2020, 5(6):  67-70. 

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In order to better promote the modern inheritance and innovative development of traditional sports activities in China, this
paper takes the domestication and fishing of osprey in Erhai region of Dali as the main research object. Through literature research,
field visits and interviews, etc., from the perspective of cultural revival and cultural reproduction, this paper analyzes the process of the
reproduction of Dali Erhai domesticated osprey fishing culture to achieve its contemporary revival. This paper discusses how the
thoughts, attitudes and behaviors of the holding group in the historical changes of the domestication and fishing of the Erhai osprey, and
how to form the impetus and effective mechanism of cultural reproduction. The development experience of the Erhai osprey
domesticated fishing enlightens us: for a nation, the internal driving force of its traditional sports culture reproduction is the cultural
awakening of the group that holds the culture; its external driving force is the strengthening of inheritors′ participation in institutional
construction. The driving forces of these two aspects are unified and work together to promote the transformation of its ontology to the
direction of cultural productivity.

Research on the Application Value and Development Path of Five-Animal Exercises in the New Era

Xia Hongwu, Zhang Lei

2020, 5(6):  71-74. 

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General Secretary Xi Jinping clearly pointed out in the report of the Nineteenth National Congress of the Party that China
should implement the strategy of healthy China, constantly improve the national health policy and level, and provide comprehensive
and systematic health services for the people. As a national intangible cultural heritage, Hua Tuo′s Five-Animal Exercises is the
earliest medical sports in China, which contains rich value. By using the methods of documentation and summary, this paper makes a
thorough and systematic explanation of the origin, cultural connotation, modern value system and development path of the Five-Animal
Exercises, which further enriches the value theory and practice research in the new era.

Research on Inheritance and Development of Folk Sports in the New Era:#br# Take Chuzhou Hand Lion-Lamp Dance as an Example

Ma Jianguo, Wang Yunwu

2020, 5(6):  75-80. 

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This paper studies the origin, development, inheritance and development of hand lion-lamp dance in Dushan town, Lai′an
county of Chuzhou city by means of literature review and field investigation. The purpose is to give some enlightenment to the
inheritance and development of folk sports by studying the inheritance and development of the dance. The study reveals the origin
and project characteristics of hand lion-lamp dance. On this basis, the normalization of the social activities through the dance has
won the attention and approval of the general public, so as to expand the mass base. Through the leadership of local government, the
dance will be introduced into the primary and secondary schools, which consolidates the foundation of inheritance and cultivates
inheritors. A large number of development funds and official government support have been obtained through methods such as
applying for the list of heritage, applying for special funds, and self-preparation. Finally, the dance combines the characteristics of the
tourism industry to carry out its own transformation and actively cooperates with the tourism industry, opening up a broader
inheritance and development space.

Analysis on the Sports-Cultural Function of Wedding Customs in Bai People's Erzi Dance

Huang Jianfen

2020, 5(6):  81-85. 

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Erzi Dance is performed during the wedding ceremony of Bai people in Dali mountain areas. It is a living fossil of Nuo
Dance, which combines sacrifice, education, singing, dancing, and sports. It is an artistic, sporting and cultural accumulation formed
during the long-term production and living in the mountainous regions of Bai, with a distinctive ethnic style and local color. This paper
studies the changes of the unique cultural, educational and physical functions of Erzi Dance from the perspective of anthropology. The
study of these primitive, traditional non-material forms of Bai cultural resources helps us understand the history, origin and development
of Bai people in mountain areas.

Comparative Study of Physical Fitness Condition of Jingpo and#br# Han Middle School Students in Yunnan Province

Lu Tianxue,Li Guozhong

2020, 5(6):  86-93. 

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In order to understand the current situation of the physical health development of 13-18 year-old middle school students
of Jingpo ethnic group, literature analysis and mathematical statistics were used to compare and analyze the physical fitness indexes of
the 13-18 year-old students of the Jingpo and Han ethnic groups in Yunnan Province. Studies have shown that the body shape
development level of Jingpo boys is basically the same as that of local Han boys, and the overall level of girls is lower than that of local
Han girls; the average level of development of Jingpo boys and girls is lower than that of rural, urban Han boys and girls. The physical
function of Jingpo students is the same as that of local Han students, but overall, it is better than that of rural and urban students across
the country. The physical qualities of the Jingpo boys are generally better than or equal to those of the local Han boys, and the girls are
generally the same as those of the local Han girls; the physical qualities of the Jingpo students are generally better than the national
rural and urban Han students. According to the problems in the physical development of Jingpo middle school students, intervention
measures should be targeted to promote the physical development of Jingpo students.

Research on the Investigation and Promotion Path of Mass Sports in Lijiang City#br# under the Background of Healthy China

Xing Weixin, Jiang Fengyun

2020, 5(6):  94-100. 

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This paper investigated the development status of mass sports for people aged 23-44, 45-59, 60 and over in Lijiang city
from the frequency of physical exercise, time, project, place, intensity, form, consumption and the reasons that affected physical
exercise by means of questionnaire survey, expert interview. Based on this, combining with the background of healthy China, this paper
puts forward the relevant paths and measures to promote the development of mass sports in Lijiang city, in order to provide important
theoretical reference and reference basis for the rapid development of mass sports in this area.