Table of Content

15 December 2017, Volume 2 Issue 12

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A New Solution for Poles and Essential Singularity of Complex Functions

Wang Fanbin

2017, 2(12):  1-4. 

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Considering the features of analytic functions, the properties of poles and essential singularity in solitary singularities of the complex functions are discussed. A new method for finding the poles, orders, and the essential singularity of complex functions is obtained and put into application. Practice shows that the new solution is more convenient and efficient than the original method, which saves a lot of work and is worthy of promotion.

On a More Precise Sufficient Condition for Conditional Extreme Values of Multi-variable Functions

Zhang Chi, Hu Bo, Qin Qin, Zhong Haiquan

2017, 2(12):  5-11. 

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The sufficient conditions for unconditional extreme values are determined according to Hessian matrix, but the sufficient conditions for conditional extreme values are rather complex. Based on an analysis that the identification of the two kinds of sufficient conditions rely on different matrices, we derived a method of locating the sufficient conditions for conditional extreme values. By use of first order Taylor expansion in obtaining the relations among argument increments, a more precise matrix for determining the sufficient condition for conditional extreme values in high dimensions and with multiple constraints has been deduced. This helps a better understanding of the relationships and differences between the two kinds of sufficient conditions, and provides a means of finding a more precise sufficient condition for a conditional extreme value.

A Mathematical Model for Dual-Level Course Arrangement Based on School Satisfaction

Yang Zilan，Li Rui，Yang Huijuan

2017, 2(12):  12-15. 

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According to the different features of the course arrangement by the college and different departments, and based on an analysis of the influential factors, constraints and common objectives in the course arrangement between the college and departments, it is suggested that teachers, classes, and courses are bundled as a teaching unit, which reduces stiff restraints for course scheduling. A mathematical model of zero-one integer programming for the dual-level course arrangement based on school satisfaction is built in the end.

The Classification of K-Nearest Neighbor over Uncertain Data Based on Expected Semantic Distance

Zhao Qinyi，Hei Shaomin

2017, 2(12):  16-20. 

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The uncertainty of data mainly includes the uncertainty of tuples and that of attribute values. For the latter type, a knearest neighbor classifier is proposed. The attribute value in this classifier is discrete, and the uncertainty of it is expressed by probability distribution vector. The semantic distance among probability distributions is firstly computed according to Concept Hierarchy Tree, and then the semantic distances among attributes and objects are computed. The classification accuracy rate has been validated by experimentation, which indicates that this classifier is a highly effective algorithm for uncertain data.

On the Construction of a Bai Speech Corpus

Yang Jian, Li Haiguang, Zhang Xiaoling

2017, 2(12):  21-26. 

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The use of Bai language is impacted by foreign economics and cultures, which has put it in an increasingly dangerous situation of extinction. To solve this problem, this paper proposes to build a corpus for Bai speech recognition and speech synthesis application. Solutions are provided for the problems in data collection and processing, system structure and data storage structure of the corpus, and also the interface between linguistic research and the corpus.

A Calculation Method of Table Instances in Spatial Co-location Pattern Mining

Zeng Xin, Li Xiaowei, Yang Jian

2017, 2(12):  27-31. 

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To optimize the computational cost of the table instances of candidate patterns, a computational method based on prefix patterns is proposed, and the table instances of candidate patterns is computed when the prefix patterns are stored in database（joinbased-D）and in dictionary（join-based-Z）. The experiment shows that the computational method of join-based Z is more efficient than join-based-D.

A Comparative Study on Image Similarity Algorithms Based on Hash

Huang Jiaheng, Li Xiaowei, Chen Benhui, Yang Dengqi

2017, 2(12):  32-37. 

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Three image similarity algorithms based on hash, including average hash, perceptual hash and difference hash, are studied. Effects and performances of the hash algorithms for the three images are revealed comprehensively, both from the theoretical and experimental perspectives, and corresponding experimental data are provided for future references on proper selection of algorithms in different occasions.

Fractal Consistency between Traffic Network and Urban Morphology for Medium and Small Cities

Li Yang, He Wencong, Wang Longfei

2017, 2(12):  38-43. 

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The fractal theory is adopted to analyze the fractal consistency between traffic network and urban morphology for medium and small cities, aiming at a better coordination of the two. Considering the non-uniformity from center to marginal areas, the radius dimension is used for the fractal quantitative description in order to ensure the comparison and aggregation, and the coordination factor is defined in order to measure the matching degree in the gradual changes from center to margins. On the basis of the structural and fractal characteristics of medium and small cities, a judgment standard for coordination is established and the consistency between traffic network and urban morphology is investigated. The high coincidence of experimental results and actual urban development demonstrates the feasibility of this method.

Research in miRNA-mRNA Regulatory Network Based on NetMatchStar

Zhang Junpeng, Zhang Wu

2017, 2(12):  44-48. 

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To study the regulatory relationships between miRNAs and mRNAs, the network match star（NetMatchStar）method is applied to identify network motifs of the integrated miRNA-mRNA regulatory network, including miRTarBase, TarBase, and miRWalk databases. Then, this study performs a pathway enrichment analysis of the target genes in the sub- networks constituted by the identified network motifs. Results show that the miRNA-mRNA regulatory sub-networks could simplify the analysis of gene regulatory networks. Moreover, the enrichment analysis of target genes could help understand the biological functions of miRNAs.

Human Brain MRI Image Segmentation Based on FCM Clustering Algorithm

Xie Yong

2017, 2(12):  49-52. 

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Magnetic resonance imaging（MRI）has a unique advantage in the study of brain functions, but the overlapping of brain tissues and the inhomogeneity of the magnetic fields in the process of imaging, the partial volume effects and noises make the MRI image boundary ambiguous. The image segmentation technology may segment and extract the needed area of medical image and assist the doctor in making an accurate diagnosis. The experimental results show that comparing with other medial segmentation technologies, the fuzzy C-mean（FCM）clustering technology can segment the human brain magnetic resonance imaging effectively. The method to realize the FCM clustering of medical images based on MATLAB is also discussed in the present research.

A Study on the Preparation and Visible Light Photocatalytic Activity of Cu-doped AglnS2

Zhang Yanqing, He Jieli, Peng Erzhi, Yan Ya

2017, 2(12):  53-58. 

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Objective: To explore the influence of Cu on the visible light photocatalytic activity of AglnS2. Methods：Cu-AglnS2 with different Cu and In ratios were prepared via a low temperature liquid phase method. X- ray powder diffraction（XRD）, X- ray photoelectron spectroscopy（XPS）, Scan electron microscope（SEM）, Transmission electron microscopy（TEM）, UV- Vis diffuse reflection spectroscopy（UV-Vis DRS）, and photoluminescence spectroscopy（PL）were used to characterize the obtained products.Rhodamine B（RhB）was selected as the model contaminant, and the effects of different ratios of Cu on the visible light photocatalytic activities of AglnS2 were explored. Results: The visible light photocatalytic activity of AglnS2 was enhanced when appropriate amount of Cu was introduced into AglnS2. The optimum ratio of Cu2+ and In3+ is 11:6. With this ratio, Cu-AglnS2 could degrade 82% of RhB after being exposed in visible light for 90 minutes. Conclusion: The visible light photocatalytic activity of AgInS2 can be improved effectively by the introduction of Cu into AgInS2.

A Study on the Synthesis and Visible Light Photocatalytic Activity of Bismuth-doped Strontium Titanate

Zhang Qidi, He Jieli, Bao Ming'e, Yan Ya

2017, 2(12):  59-62. 

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Objective: To study the visible light photocatalytic activity of Bi-doped SrTiO3. Methods: Bismuth（Bi）doped strontium titanate（SrTiO3）nanometer powders with different ratios of Bi were synthesized by chemical coprecipitation method. The structure of the photocatalytic catalysts was characterized by XPS, XRD, HRTEM, and UV-vis DRS. When Rhodamine B（RhB）was used as the model pollutant, and 1 000 W halogen lamp（λ >420 nm）as visible light source, the effects of different doping amount of Bi on the photocatalytic activity of SrTiO3 was investigated. Results: An appropriate amount of Bi doping to SrTiO3 can improve the visible light photocatalytic activity of SrTiO3, and 3 wt. % Bi-SrTiO3 has the highest visible light photocatalytic activity for the degradation of RhB. Conclusion: The doping of Bi can extend the visible light response range, and significantly improve the visible light photocatalytic activity of SrTiO3.

Making and Application of Multimedia Teaching Courseware for Inorganic Chemistry Experiment

Hao Fangfang, Lan Hai

2017, 2(12):  63-65. 

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With the development of information technology, the application of multimedia technology in experimental teaching has become a trend. This paper analyzes limitations of the traditional teaching methods of inorganic chemistry experiments, expounds the advantages of multimedia teaching of inorganic chemistry experiment, and introduces the making and application of multimedia teaching courseware for inorganic chemistry experiments in the school.

The Influence of Different Media and Nutrient Solutions on the Growth of Blechnum orientale in Hydroponic Culture

Chen Jinshu

2017, 2(12):  66-69. 

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In order to improve the survival rate and growth rate of hydroponic Blechnum orientale, this research studied the effects of different substrate（biochemical cotton and colonization baskets）and Japanese garden nutrient solutions with different degrees of concentrations（standard nutrient solution, 1/2 standard nutrient solution, 1/4 standard nutrient solution and city water after standing for 2 days）on root length, number of new leaves and plant fresh growth weight. The results showed that after 50 days of hydroponic experiment, Blechnum orientale planted with biochemical cotton had better root length（11.58 ± 1.38）cm, the number of new leaves （11.00 ± 0.82）and the fresh weight（22.00 ± 0.82）g than those planted in baskets with the root length（8.95 ± 0.79）cm and the number of new leaves（9.25 ± 0.96）, fresh weight（18.50 ± 1.29）g, indicating that biochemical cotton is conducive to the cultivation of rich ferns. Among the test results with different concentrations of nutrient solution in the garden, the root length, new leaf number and resh weight increment of biochemical cotton and colonization baskets were（10.77 ± 0.85）cm ,（12.67 ± 2.08）,（19.67 ± 2.08）g and (10.20 ± 0.61）cm,（11.33 ± 1.53）and（17.67 ± 0.58）g respectively in the 1/2 standard nutrient solution, which suggest 1/2 solution is more conducive for the cultivation of the plant.

Effects of Fecal Sample Preservation Methods on the Monitoring of Intestinal Oesophagostomum in Rhinopithecus bieti

Li Yanpeng, Huang Zhipang, Liu Shuoran, Yang Yimei, Zhong Tai, Su Xijun,

2017, 2(12):  70-73. 

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Objective: To explore an effective fecal sample preservation method for quantitative monitoring of intestinal Oesophagostomum in Rhinopithecus bieti. Methods: The detection rate and detection intensity of Oesophagostomum in Rhinopithecus bieti fecal samples from two preservation methods（formalin preservation and cryopreservation）were compared and analyzed, and the sample preservation under different storage conditions was analyzed for different effects. Results: The samples stored at -20 ℃ showed that the detection intensity of Oesophagostomum eggs was（919.69 ± 916.09）/ g, the detection rate was 88.89%（56/63）, the detection rate did not decline within 30 days, and the detected intensity also maintained at a high level. The sample stored in formalin reduced its intensity to 4.98% on 4th day, and the detection intensity and detection rate showed significant differences（t=6.799, P <0.001, df=62; χ2=45.10, P<0.01）. Conclusion: In a frozen condition at -20 ℃ which ensures the detection rate and intensity of Oesophagostomum, the storage time of the fecal samples of Rhinopithecus bieti can be effectively prolonged.

Investigation on the Resources of Aquatic Hyphomycetes in Jizu Mountain

Zhao Na, Bao Danfeng, Li Wenli, Luo Zonglong, Su Hongyan

2017, 2(12):  74-78. 

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Objective: To investigate the diversity of aquatic hyphomycetes in Jizu Mountain. Methods: 120 samples of submerged rotten wood were collected from Jizu Mountain stream. After moisturized cultivation, they were isolated, purified and identified.Results: According to their morphological characteristics, 40 species of 20 genera of aquatic hyphomycetes were identified.Conclusion: Jizu Mountain is rich in aquatic hyphomycetes resources. The highest detection rate was Helicosporium（23.08%）,followed by Dactylaria（18.46%）, Ellisembia（10.77%）, and the lowest was 12 genera including Arachnophora（1.54%）and Beltrania（1.54%）

Effects of Ecotourism on Bacteriological Indicators in the Streams of Dali Cangshan Mountain

Wang Jialiang, Zhang Fa, Liu Shuoran, Mao Xudan, Zhou Jianfen, Xiao Wen,

2017, 2(12):  79-83. 

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Objective: To carry out bacteriological tests on the water quality of some streams in Cangshan Mountain, Dali, Yunnan Province, and to understand the effects of ecotourism on the water quality of streams. Methods: The samples were collected from the upstream and downstream of the Jade Belt Road, and the Yangnan Creek which is unfrequented by tourists, and the total number of colony, total coliforms and heat-resistant coliform bacteria in water samples were detected by plate colony counting method and multitube fermentation method. Results: The bacteriological indexes of the water samples below the Jade Belt Road were higher than that of water samples collected up the Road（total number of colonies: P = 0.014<0.05, total coliforms: P = 0.026<0.05, thermotolerant coliforms: P = 0.002<0.05）. The bacteriological indexes of all water samples in summer were higher than those in winter（total number of colonies: P = 0.007<0.05, total coliforms: P=0.001<0.05, total thermotolerant coliforms: P=0.020<0.05）. Jade Belt Road got higher bacteriological indicators than the Yangnan Creek. Conclusion: Ecotourism has an impact on the bacteriological index of Cangshan streams in Dali. Therefore, the development of ecotourism should pay attention to the possible public health problems. Public health and environmental protection departments should participate in the planning and implementation of ecotourism to ensure public health and safety.

An Exploration of the Experimental Teaching Model for Environmental Biology

Zhu Dan, Liao Shaohua, Tian Chunmei, Yang Lin

2017, 2(12):  84-87. 

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Environmental biology is an important professional course for the major of environmental science and its experiment part plays a vital role in the teaching. The construction of a new experimental teaching model has been explored from the aspects of optimizing experimental teaching contents，emphasizing the experiments process，diversifying experimental teaching models and improving the experimental evaluation mode. The course evaluation and students' average score have increased 3.82 points and 2.25 points respectively, and overall failure rate has decreased obviously after the teaching reform. According to the result of questionnaire survey, students' interests in learning have also increased.

A Study on the Evaluation Standard of Physical Quality of Local College Students Majoring in Physical Education

Dong Yufu, Zhang Wenxing, Gao Bingxian, Gao Bingqian,Yang Yingfei

2017, 2(12):  88-97. 

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In this paper, using literature data, questionnaire survey, physical test and mathematical statistics on the physical quality evaluation standard of students majoring in physical education, reference is provided for the assessment and evaluation of physical quality of college students majoring in physical education in border minority areas. The research results were as follows: ①the present standard of professional students' physical quality has problems; ②average scores（ xˉ ±s）of students' physical quality are suggested; ③different indexes of physical quality are investigated. At last, conclusions and suggestion on how to specify relevant norms, enhance the supervision and encouragement of assessment for students, and promote the compatibility of assessment measures and contents.

An Analysis on the Influential Factors for Health Conditions of People with Senior Titles in Yunnan Province

Duan Yimei, Lu Guotian, Yang Xingmei

2017, 2(12):  98-102. 

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This paper investigates and analyzes the health status of senior titled staff in Yunnan province and the risk factors affecting their health. The results showed that the number of unhealthy people accounted for 32.91%, healthy people accounted for 32.65%, and sub-health accounted for 34.44%. Multivariate logistic regression analysis showed that life casualties, life stress, poor quality of sleep, long-term Internet access, long-term smoking, long-term drinking, exercise plan, and appropriate aerobic exercise are independent risk factors for the health of senior-titled personnel. The results show that the health conditions of senior titled staff are not optimistic with irregular life and rest, life stress, poor sleep quality, long-term Internet, long-term smoking, long-term drinking, exercise plan, and appropriate aerobic exercise, which are crucial risk factors, and the senior titled staff should be reminded with these problems in their health guidance.

The Present Situation and Countermeasures of the Development of Campus Football Teachers in Frontier Minority Areas ——Based on an Investigation inYunnan Province

He Yongjie, He Lidong, Lu Kaizhi

2017, 2(12):  103-106. 

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Based on methods including document literature and interviews, this paper makes an in- depth investigation in the development and construction of campus football teachers in Yunnan province, draws lessons from past experiences and achievements, analyzes the problems and causes, and puts forward suggestions and countermeasures for the development of campus football teachers in border ethnic areas in the background of football reform. The research shows that schools in Yunnan province are still short of football teachers, teachers' development is unbalanced, and the system is imperfect. It is an arduous the task that needs to be solved with creativity in order to achieve the goal on time.

A Study on Erhai Osprey Fishing Culture of Dali Bai People

Liu Dejun, Zhang Zhaolong, Cao Chong

2017, 2(12):  107-110. 

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This paper uses the methods of literature, logical analysis and field investigation to study Bai people's osprey fishing culture around Erhai Lake, Dali. It aims at revealing the socio-cultural value of the osprey fishing show, enriching the connotation of the fishing culture, promoting this tradition of Bai people, enhancing the inheritance and development of traditional ethnic sports, diversifying the ethnic sports activity in Erhai Lake regions, and to provide practical solutions for the preservation and promotion of fishing cultures.