Archive

20 May 2021, Volume 36 Issue 3 Previous Issue    Next Issue
---
Mathematics
Physics
Biology
Geography
Economics & Management
Agricultural Science & Technology
Physical Education


For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Mathematics

Select

Image Edge Detection Based on Slop Correlation Degree and Krisch Operator XUE Wenge, KUANG Tianfu 2021, 36(3):  1-7.  Abstract ( 16 )   PDF (2344KB) ( 4 )   Aiming at the problems of inaccurate edge positioning and poor continuity when using the grey relational analysis method to detect image edges, combining the advantages of slop correlation degree and Krisch operator, this paper proposes an algorithm that combines slop correlation degree with Krisch operator. First make the eight direction templates of Krisch operator as reference sequence of slop correlation degree, then use slop correlation degree to calculate each pixel correlation degree of the reference sequence and comparison sequences and compare it with the given threshold value to distinguish whether the pixel is edge point. The experimental results show that this algorithm is simple and easy to implement and image edges detected are continuous and clear with accurate positioning and rich details. In short, it is an efficient image edge detection algorithm. References | Related Articles | Metrics

Select

Application and Comparison of ARIMA Model and Holt Two Parameter Model in Population Forecast GUO Jing, ZHANG Yinxiang 2021, 36(3):  8-15.  Abstract ( 25 )   PDF (1783KB) ( 8 )   Taking the total population of Yunnan Province from 1973 to 2018 as an example, this paper establishes the Holt two-parameter exponential smoothing model, the ARIMA model and the cubic polynomial model. The ARIMA (4,3,1) model is selected from the ARIMA model using the minimum AIC criterion and is compared with Holt's two-parameter exponential smoothing model and cubic polynomial model. After comparing the average error rate of the predicted value of the model with the fluctuation range of the residual, the ARIMA(4,3,1) model has a higher fitting accuracy and is suitable for predicting the total population in the short term. Based on this analysis, the total population of Yunnan Province was predicted for 8 periods. References | Related Articles | Metrics

Select

Mathematical Model Analysis of AHP-based Dynamic Evaluation Method of Automobile Handling Stability GU Lei 2021, 36(3):  16-21.  Abstract ( 25 )   PDF (1419KB) ( 11 )   Aiming at the situation that the traditional dynamic evaluation method of automobile handling and stability has easy single index and the subjective evaluation of overall performance is more complicated, combined with the analytic hierarchy process (AHP), a dynamic evaluation method of automobile handling and stability based on AHP is proposed. Analyze the evaluation content and development status of vehicle handling stability, use AHP as the theoretical basis, build a dynamic evaluation system of vehicle handling stability and a hierarchical analysis structure model, determine the evaluation index weight factors, and calculate the evaluation scores of vehicle handling stability to realize dynamic evaluation of vehicle handling and stability. The simulation experiment results show that the proposed method can obtain accurate dynamic evaluation results of automobile stability, and at the same time provide a certain theoretical basis for automobile design. The proposed method provides a certain theoretical basis for the research on dynamic evaluation of vehicle handling and stability. References | Related Articles | Metrics

Select

Mathematical Model Analysis on the Coordinated Development of Transportation Infrastructure and Circulation Industry LIN Wei 2021, 36(3):  22-26.  Abstract ( 6 )   PDF (1524KB) ( 2 )   In order to study the mechanism of mutual development between traffic infrastructure and circulation industry, this paper uses the data of traffic infrastructure and circulation industry development of 30 provinces, regions and municipalities in 2003-2016 to establish panel data model for empirical analysis. The results show that: 1) transportation infrastructure and circulation industry are mutually Granger causality; 2) the short-term fluctuation of circulation industry development has a positive impact on the short-term fluctuation of transportation infrastructure investment, while the short-term fluctuation of transportation infrastructure investment has no significant impact on the short-term fluctuation of circulation industry development; and 3) the interaction level of transportation infrastructure investment and circulation industry development is different and there are big differences across provinces. References | Related Articles | Metrics

Physics

Select

A Preliminary Discussion on the Linear Harmonic Oscillator Plus Space Rotor Model by Using the Laws of Statistical Physics CHEN Yanhui 2021, 36(3):  27-30.  Abstract ( 13 )   PDF (1389KB) ( 4 )   Based on the basic knowledge of statistical physics and the calculation process of diatomic ideal gas heat capacity, the linear harmonic oscillator and space rotor model are studied. The partition function of particles at room/cool temperature and high temperature is calculated. At room temperature, the particle partition function is $z=\frac{1}{N!}\frac{T}{T_{r}}e^{-\beta \frac{1}{2}\hbar\omega}$. At high temperature, the particle partition function is $z=\frac{1}{N!}\frac{T}{T_{r}}(e^{-\beta \frac{1}{2}\hbar\omega}+e^{-\beta \frac{3}{2}\hbar\omega}+e^{-\beta \frac{5}{2}\hbar\omega}+...)$. With the partition function, we can calculate any required physical quantity, such as energy, pressure and entropy. References | Related Articles | Metrics

Select

The User-oriented Development of the Marsh Gas Dumping and Inputting Auxiliary System YIN Dedu, LI Jiawang, WANG Xinchun, LIU Kaibo, GU Chunfu 2021, 36(3):  31-38.  Abstract ( 20 )   PDF (2487KB) ( 3 )   This research addresses China's rural areas about the vertical cylinder hydraulic pressure gas digesters instability, the surplus gas storage difficulties and biogas ease pressure on feed to accelerate the stirring in tank and improve the gas production efficiency. Ordinary low-noise pressure compressor has the characteristics to export gas at more than 1 Mpa to enable rural households to compress and store methane-generating pit surplus marsh gas to achieve gas pressure stability, so that users can stablize supply of methane. At the same time they can use the compressor to quickly exhaust gas at a negative pressure to reduce pressure feed. This way, biogas residue and biogas slurry can return in quantity to stir the tanks and increase gas production. The system focuses on circuit and pipeline design and the system performance indicators are tested and found to be able to meet the design requirements. The trial system runs stably and its functions can meet the designed objectives. Development of this system is of significance to the construction of beautiful villages. References | Related Articles | Metrics

Biology

Select

EST-SSR Sequence Analysis of Genus Camellia Cunli Dong, Guoyan Kou, Chunmei Luo, Yan Zhang, Haiyan Yang, Shuguo Fan, Qianjin Chen, Jiangong Yu, Shengfu Shao, Changjie Jiang, Yangying Luo, Lu Qiu 2021, 36(3):  39-50.  Abstract ( 12 )   PDF (1830KB) ( 13 )   179 plants of Camellia genus were analyzed using SSR, EST-SSR molecular markers technology to detect their genetic relationship. DNAs of the 179 Camellia plants were extracted by improved CTAB, then tested for the quality of DNAs by way of 1 percent of agarose gel electrophoresis, and tested for PCR amplification by way of 2 percent of agarose gel electrophoresis. The results of amplification products show, the EST-SSR sequence fragment size is 194bp, the longest being Chongzhu （C. theopsis） of 210bp and shortest being Aomai （C. impressinervis） of 152bp. Referring to the homologous series in NCBI and compared using Cluster X software, great differences were found in the EST-SSRs of different camellia plants, with 1752 deletion loci and 813 mutation sites. Phylogenetic trees were constructed using MEGA 6.0 to analyze their genetic relationship, 39 camellia plants were classified into four groups, i.e. Sect. Camellia, Sect. Chrysantha, Sect. Furfuracea and Sect. Theopsis. The results are basically in consistency with Zhang Hongda morphological classification. This indicates that EST-SSR molecular marker is effective in phylogenetic classification and identification of Camellia. References | Related Articles | Metrics

Select

Study on the Composition and Abundance of the Rhizosphere Microbiota of Lemna minor in the Dongda River Wetland and the Laoyu River Wetland of Kunming in Spring and Autumn KONG Lingdong, ZHANG Yu, ZHANG Hongbo, ZHAO Mingfang, XIA Yun 2021, 36(3):  51-59.  Abstract ( 15 )   PDF (4731KB) ( 5 )   To obtain the compositional and functional information of the rhizosphere microbiota of Lemna minor in the Dongda River Wetland and the Laoyu River Wetland of the Dianchi Lake of Kunming, so as to achieve sustainable development and utilization as well as biodiversity protection of wetland resources and provide biological disaster prediction, fluorescence in situ hybridization was used to investigate the rhizosphere microbiota of Lemna minor in these two wetlands during spring and autumn. By comparing the differences in composition and abundance of the rhizosphere microbiota of Lemna minor in these two sites, we found that except for the abundance of Chloroflexus, that of ammonia oxidizing bacteria, denitrifying bacteria, sulfate-reducing bacteria and methanogenic bacteria as well as Proteobacteria and Bacteroides varied at different degrees with changes in wetlands and seasons. The results from this study can be used not only as biological indicators of the water quality, but as an effective technology support to manage the water quality of the wetlands. References | Related Articles | Metrics

Select

Evaluation of the Value of Serum Non-coding RNA SCHLAP1 Combined with PSA in the Diagnosis of Prostate Cancer ZOU Jing, TANG Ying, HAN Hong, ZHANG Cuixiang 2021, 36(3):  60-66.  Abstract ( 15 )   PDF (1407KB) ( 4 )   Objective:to explore the clinical significance of serum SCHLAP1 and prostate specific antigen (PSA) in detection of patients with prostatic cancer (PCa). Methods:A total of 30 cases of prostate cancer, 30 cases of benign prostate hyperplasia and 30 healthy controls between April 2019 and August 2018 were included in the study. Serum levels of SCHLAP1 and PSA were detected by Biotin labeling probe and RIA, then the cure of the receiver operating characteristics cure (ROC) was drawn, and test results of SCHLAP1, tPSA, fPSA and fPSA/tPSA were compared. Results:The difference of serum SCHLAP1 in patients with prostate cancer, benign prostate hyperplasia and healthy people were statistically significant (P<0.01). ROC showed that the sensitivity and specificity of SCHLAP1 alone were 76.4% and 93.6% respectively, and the sensitivity and specificity of SCHLAP1 joint tPSA detection were 92.0% and 88.3% respectively. Conclusion:The co-detection of SCHLAP1 with PSA can make up for the lack of PSA alone, and improve the accuracy of prostate cancer detection. References | Related Articles | Metrics

Select

Preliminary Study on the Endophytes and Rhizosphere Soil Microbes of Cyclobalanopsis glaucoides Haiyan Yang, Yanshuang Li, Riujun Li, Yan Zhang, Zhongze Luo, Tianxing Li 2021, 36(3):  67-79.  Abstract ( 13 )   PDF (5268KB) ( 4 )   The results showed that 61 strains of bacteria and 24 strains of fungi were isolated from the root, stem, leaf and rhizosphere soil of Cyclobalanopsis glaucoides 29 strains were isolated from roots, including 25 strains of bacteria and 4 strains of fungi; 12 strains in stems, including 4 strains of bacteria and 8 strains of fungi; 7 strains in leaves, including 3 strains of bacteria and 4 strains of fungi, namely root （34%） > stem （14%） > leaf （8%）, and the remaining 37 strains were isolated from soil. The distribution of bacteria in C. glaucoides was as follows： root （56%） > stem （8%） > leaf （6%）. Fungi were more in stem. Most of the bacteria isolated from roots, stems and leaves were cocci, while the bacteria isolated from rhizosphere soil were more than those from rhizosphere soil. The isolated fungi included 2 strains of Aspergillus, 2 strains of Cladosporium, 1 strain of Verrucaria, 1 strain of botryosporium, 1 strain of Colletotrichum, 4 strains of Penicillium and 2 strains of Colletotrichum. The others were non spore groups, among which Penicillium was slightly dominant. The results of this study can provide support for the experiment of C. glaucoides. References | Related Articles | Metrics

Select

Effects of Five Treatments on Detoxification of Tissue Culture Seedlings of Strawberry with Cream LI Guoshu, XU Chengdong, WANG Zhengji, FAN Shuguo, GUAN Qingbing 2021, 36(3):  80-85.  Abstract ( 20 )   PDF (1914KB) ( 4 )   To screen out the best method of detoxification culture and virus detection of tissue culture seedling of Strawberry of cream, the old leaves of strawberry with whipped cream are used as the explants to seed out of the tube seedlings and develop the tube seedlings respectively. Five methods – ribavirin in medium composition, day and night temperature treatment, high temperature, low temperature cultivation, seedling stem tip cultivation – are used to sterilize the tube seedlings, which are then treated with indicator plant daub mandala, amaranth, thousand-day red Chrysanthemum. Three weeks after transplanting, the external morphology was detection. The results showed that 1) the detoxification effect was the best after 40℃ high temperature treatment combined with stem tip culture; 2) the medium containing 25 mg/L triazole riboside was beneficial to the detoxification of strawberry butters; and 3) the plant Mandala is more sensitive to the strawberry virus than amaranth and thousand-day red Chrysanthemum and is thus the most convenient method for observation of external morphology after transplanting of detoxified seedlings. References | Related Articles | Metrics

Geography

Select

Study on Climate Suitability for the Elderly Living in the Central Yunnan City Cluster HE Ping, ZHOU Shuhan 2021, 36(3):  86-96.  Abstract ( 15 )   PDF (3095KB) ( 8 )   In order to evaluate the degree of comfort for the seniors in the urban agglomeration of central Yunnan, this paper establishes an evaluation index system of climate suitability for the seniors, which is based on the Humidity-Temperature Index, Wind Effect Index and Air Quality Index. Through the calculation and cluster analysis of the elderly care climate suitability index for the cities in the central Yunnan urban agglomeration, 46 cities are divided into five elderly care climate zones: 1) the Yuanjiang hot valley, intensely hot in summer and warm in winter; 2) the northern thermal valley area with high temperature in summer and warm winter; 3) Alpine cool area, cool in summer is and cold in winter; 4) four-season comfort zone and southern warm area, where it is comfortable for 9 months; and 5) the central Yunnan urban agglomeration with unique advantages in climate for elderly care. It is recommended that certain financial support be given in the process of urban development. References | Related Articles | Metrics

Select

Research on the Coupling Coordination Degree between Urbanization System and Water Resource System in Yunnan Province CHEN Xicai, REN Junyi, ZHAO Yajun, CAO Chen 2021, 36(3):  97-104.  Abstract ( 16 )   PDF (2186KB) ( 4 )   It is highly significant for the development of a region to have a well coupled and coordinated water resources system and urbanization system. Based on the construction of the evaluation systems of both urbanization system and water resources system, whose weight was given by the “vertical and horizontal” scatter degree method and expert scoring method, the paper computes and analyzes the coupling and coordination state between the water resource system and the urbanization system in cities and prefectures of Yunnan Province. The results show that: 1) the water resource systems and the urbanization systems in Kunming, Qujing, Yuxi and Honghe are highly coupled and coordinated, while those of the rest of Yunnan Province are in a moderately coupled and coordinated state; 2) In 2010, central Yunnan and Honghe prefecture are high-high concentration areas of coupling coordination degree between the urbanization system and water resource system while Zhaotong, Pu'er and Wenshan are low-high regions, and west Yunnan and northwest Yunnan are low-low regions; 3) In 2017, central Yunnan and Honghe prefecture are still high-high concentration areas of coupling coordination degree between urbanization system and water resource system while Zhaotong, Pu'er and Wenshan are still low-high regions and Dali prefecture and Lincang’s coupling coordination degree changed from the low-low concentration areas in 2010 to high-low concentration areas. References | Related Articles | Metrics

Economics & Management

Select

The Knowledge Mapping Analysis in Research Status and Development Trend of Brand Management Theories Based on Main International Management and Economics Journals LI Xiangyu, LI Jun, LI Xuefen 2021, 36(3):  105-117.  Abstract ( 21 )   PDF (6374KB) ( 5 )   Brand management theory is the guidance of brand development in enterprises and organizations. To develop Chinese self-owned brands needs excellent brand management experiences, both domestic and international. Hence, based on previous research, this study collected and analyzed 651 papers on brand management published between January 2011 to October 2020 on international mainstream and core journals on management and economics. In this study, a macro analysis on these papers is made in five aspects - mainstream journals, origin of journals, hot topics, research methodologies and specific topic. Through this study, the overall situation of international brand management research, the trend of hot topics, the circumstances of specific topic, and the limits and blanks are found to provide reference and suggestions to Chinese brand management research in the future. References | Related Articles | Metrics

Select

An Analysis of the Research Status of Shared Leadership Abroad Based on Bibliometrics XIE Lidong 2021, 36(3):  118-124.  Abstract ( 11 )   PDF (1372KB) ( 3 )   To describe the research status of shared leadership in foreign countries, a quantitative analysis of 88 foreign journal papers was conducted in the bibliometric method. It is found that the research of shared leadership abroad has not yet formed a stable research team or core journals. The research institutions are mainly universities and medical institutions in the United States, Britain, Germany and Canada. The research fields mainly focus on the leadership and management of emergency handling teams, multi- and cross-disciplinary teams and innovation teams in the areas of medical treatment and enterprise. The research topics mainly involve theoretical foundation research, practical application exploration, influencing exploration and action research. References | Related Articles | Metrics

Agricultural Science & Technology

Select

Cultivating Local Characteristic Industries to Help Overcome Poverty - Investigation and Thinking on Planting Status of Paris polyphylla and Polygonatum sibiricum in the Yakou Village Committee DUAN Lianxin 2021, 36(3):  125-130.  Abstract ( 14 )   PDF (3111KB) ( 3 )   Based on the field investigation of 34 natural villages in 18 villagers' groups of the Yakou Village Committee, this paper finds that the natural environment of the Yakou Village Committee is very suitable for the growth of wild Paris polyphylla var.Yunnanensis and polygonatum kingianum Coll.et Hemsl. Some farmers have begun to grow their plants and have gained some economic income, which is suitable for the promotion and development of the Yakou Village Committee. Some problems are found in the development of the survey and suggestions from the renewal of ideas are made to stimulate endogenous power, improve planting technology, cultivate planting technology leaders and establish cooperatives to form large-scale planting. References | Related Articles | Metrics

Select

Study on the Heterosis of Distant Hybridization of Pumpkin MA Shenghao 2021, 36(3):  131-136.  Abstract ( 21 )   PDF (3136KB) ( 6 )   Through the research on pumpkin distant hybrid breeding, excellent new materials can be provided for removing the bad selection, retaining the good, purifying the gene, and cultivating the pumpkin germplasm resources with stronger offspring. In central and southern Yunnan, a single plant with early and more female flowering was selected from a number of new Indian pumpkin materials and hybridized with Chinese pumpkins to obtain a new generation of hybrid pumpkin varieties with good F1 performance for production applications. The results of the study showed that the offspring pumpkin varieties obtained through purified distant genetic recombination have excellent combinations in performances such as low temperature tolerance, strong growth potential, disease resistance, early maturity, high quality, high yield, and easier for storage and transportation. After multiple generations of gene purification, the advantage of distant hybridization with the new technology becomes obvious. Although the breeding takes a longer time, it can effectively improve the social and economic value of pumpkin F1. References | Related Articles | Metrics

Select

Biological Characteristics of Seseli mairei Wolff Seeds LU Juen, GUO Qiaoyi, ZHAO Jianneng, ZHANG Tianxiang, ZHANG Fengmei, WANG Hongli, YANG Guangfu, DONG Hongmin, LIU Aimin 2021, 36(3):  137-142.  Abstract ( 9 )   PDF (1431KB) ( 4 )   To lay a foundation for the development of artificial cultivation of Seseli mairei Wolff and the restoration of wild resources, this research was carried out on the biological characteristics of S. mairei Wolff seeds. Firstly, the method of symptom observation and weighing was used to describe the seed characteristics and measure the thousand grain weight of the seeds to obtain the characteristics of good seed and thousand grain weight. Secondly, 4 temperature gradient treatments were set to observe seed germination potential and germination rate and determine the most suitable germination temperature. The most appropriate treatment concentration was to observe the germination rate. Finally, the Chinese cabbage seeds were treated with the extract of S. mairei Wolff seeds to observe its inhibitory effect on seed germination and determine whether there existed substances in seeds that would inhibit germination. Moreover, S. mairei Wolff seeds were soaked in four concentration gradients of GA3 solution to observe their germination rates for further selection of the most optimal treatment concentration. S. mairei Wolff seed has the weight of 1.0 g and the most suitable germination temperature is 30℃, with inhibition of germination substance. Additionally, use of 100 ppm GA3 can improve seed germination rate. S. mairei Wolff is a high temperature germination seed with inhibitory substances, and effective measures should be taken according to the biological characteristics of the seed in order to improve the seed germination rate. References | Related Articles | Metrics

Physical Education

Select

Investigation and Analysis of Eyesight Condition of College Students from a University in Yunnan Province TAN Lin, QIN Bin, ZENG Heqiang 2021, 36(3):  143-148.  Abstract ( 50 )   PDF (1399KB) ( 27 )   This paper, aiming at understanding eyesight condition of college students from a university in Yunnan Province, provides reference data for preventing the continued decline of the students' eyesight. Eyesight of a total of 8520 students of classes 2017, 2018, 2019 were tested, then the results were statistically analyzed. The rate of poor eye sight is 87.3%, and the severe poor vision detection rates is 67.3%. The rate of poor eye sight of girls is higher than that of boys. The condition of students’ eyesight in different grades fluctuates. The rate of poor eye sight of science student is higher than that of liberal arts students. The difference for eye sight between the Han and other minorities is not statistically significant. The rate of poor-eyesight students from other provinces is higher than that of students of Yunnan province. The problem of eye sight should be highly valued and measures should be taken to improve the health level of students' eyesight by all sectors of society, universities, families and the students themselves. References | Related Articles | Metrics

Select

Study on the Relationship between Residents’ Perception of the Impact of Traditional Ethnic Sports and Their Participation Intention TANG Lei, ZHANG Sha 2021, 36(3):  149-155.  Abstract ( 12 )   PDF (1399KB) ( 3 )   In order to explore residents’ willingness to participate in traditional ethnic sports events, this paper takes the 11th Ethnic Minority Sports Meeting in Yunnan Province as a case and uses structural equation model to explain the relationship between the comprehensive impact perception of traditional ethnic sports events and the residents’ attitude towards the events and their willingness to participate. The result shows: 1) the perception difference to people’s traditional sports has positive influence on cognitive relation, but the economic benefit, environmental benefit and urban identity perception do not while social benefit has positive influence on perception of city identity relationship; and 2) there is also relationship between the three factors affecting attitude, that is, traditional sports cognition has a positive impact on urban identity and also has a positive impact on behavioral intention, and there is a positive impact between urban identity and behavioral intention. References | Related Articles | Metrics

Select

Study on the Correlation between FMS and Physical Health Test of the Students ZHU Xia, GUAN Hui 2021, 36(3):  156-160.  Abstract ( 15 )   PDF (1355KB) ( 8 )   In the New Era, it is of great practical significance to do a good job on the evaluation of the students' physical health to promote the development of their physical health. According to the students' physical development, skill acceptance and physical and mental characteristics, FMS and the students' physical health test are selected to test the correlation between these indexes to establish a scientific evaluation of the students' physical health indicators system, so as to improve the evaluation standards of the students' physical health. In this study, 150 junior middle school students were randomly selected from thirty-one middle schools in Zhengzhou, and the results of functional movement screening test were analyzed statistically. The results showed that the students' sprint, forward bend, sit-up, pull-up and active leg raising, trunk stability push-up and body rotation stability in physical fitness test were correlated due to the similarity of movement patterns and muscle groups. FMS test and physical health test of 800m and 1000m showed no significant correlation. Although there were Partial correlation, the two kinds of tests reflected the students' different abilities, and it is suggested that the relevant departments may consider to add some actions and indexes to examine the quality of movement and the posture of the students in the future physical health tests. References | Related Articles | Metrics