Table of Content

15 June 2014, Volume 13 Issue 6

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Existence of Periodic Solutions for a Class of Second Hamilton Systems

WANG Shao-Min

2014, 13(6):  1-3. 

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The purpose of this paper is to study the existence of periodic solutions of the following second order systems by the
critical point theory. When the nonlinear term F(t,x)=F1(t,x)+F2(x) satisfies assumption（A）, and F1(t,x),F2(x) satisfy many boundary conditions, one new existence theorem is obtained by the least action principle.

The Structure on Solution of a Kind of First-order Variable Coefficient Linear Differential System of
Equations

FU Yun-Jin

2014, 13(6):  4-6. 

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Based on the general solution of the first order variable coefficient linear homogeneous differential equations of
dY/dx =Af (x)Y （f (x) is an integral function），the solutions of first order variable coefficient linear differential equations are further explored，and the structure theorem of the general solution is provided.

A Note of Congruence-free Regular Semigroups with Zero Element

LUO Xiao-Qiang

2014, 13(6):  7-9. 

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In this paper, let S be a regular semigroup, and E(s) be the set of idempotent of regular semigroup S. By constructing the relation between sets in S, we obtain a new method to show the regular semigroup S with zero element is a congruence-free regular semigroup.

A New TCP New Vegas Algorithm Applicable for the Heterogeneous Networks

FENG Li-Bo, PAN Li-Jing, YANG Run-Biao, LUO Gui-Lan, ZHANG Mei

2014, 13(6):  10-14. 

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TCP Vegas is a reliable algorithm in the transport layer. In virtue of the data transmission restricted in wireless network bandwidth, it is not suitable for transmission in the wireless network. A TCP New Vegas algorithm which is applicable to heterogeneous networks is presented based on TCP Vegas algorithm. The algorithm controls the diff two dynamic threshold methods a, b. According to the two set a dynamic threshold method, it can effectively improve the algorithm of congestion window and throughput. The algorithm simulation experiment was carried out for background simulation of wireless sensor networks access to the third generation mobile communication network. The simulation results show that the improved TCP New Vegas algorithm has larger congestion window and higher throughput. It is more suitable for application in heterogeneous network data transmission.

Study on Dimensional Model Based on the Affective Computing E-Learning

SHI Yi-Jin, JIA Zhi-Yiang

2014, 13(6):  15-19. 

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This thesis divides learners' learning affect based on dimensional affective model, and introduces the method of affective semantics to quantitatively show learning affect and learners' character, and then recommends that the content should be studied and increases the interaction between learners and computers after the process of combining affective computing value and the degree of knowledge difficulty. This thesis also puts forward the plan of affective semantics based on affective model, to develop the existing learning system and diversify the recommendation of characteristic strategy, so as to improve the interaction of the system, and thus the effectiveness of the system is improved. In the end, the goal of serving the learners is fulfilled.

A Study of Curriculum Setting Based on Association Rule Interestingness

LI Zuo-Jun

2014, 13(6):  20-23. 

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This paper mainly gives a general introduction to data mining, concept and algorithm of association rule and also
introduces a new concept——association rule interestingness. Under the condition of defaulting minimum support, minimum confidence and interestingness, the author developed the software of association rule mining by using Visual FoxPro to make an analysis of computer majors' grades of their specialized courses with the hope that the relationship between the specialized courses could be found out, which can provide a scientific basis for curriculum setting.

Research on Modern Mathematics Education History in Dali

LI Jia-Mei

2014, 13(6):  24-28. 

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By collecting and sorting the historical materials of modern mathematics education in Dali, we obtain the development and evolution characteristics in elementary mathematics education and higher mathematics education. The elementary mathematics education goes through an evolution process from emerges of old and private school mathematics education to development of school mathematics education. Higher mathematics education started late in Dali, but Central China University promoted the development of Dali higher mathematics education at Xizhou. Therefore, understanding the evolution characteristics is reference value to mathematics education reform nowadays.

Study on DLA Model and Its Application in Simulating Plants Growth

MA Lin-Tao, CHEN De-Yong

2014, 13(6):  29-32. 

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This paper discusses how to produce and draw the most representative of the fractal structure of Diffusion Limited
Aggregation（DLA）model based on the fractal theories of iterative process, so that the process of particle dynamic growth and simulate the growth of plants are observed. By using the method of mathematical modeling for curve fitting, it establishes two more reasonable mathematical models of simulating plants growth, which are 3 polynomial model and index function model. They can predict the trend of plants growth, and realize the real-time monitoring of plants growth and estimation.

The Magnetization of Free Electron Gas for the Entireregimes

WANG Zhao-Jun, ZHU Chun-Hua, LV Guo-Liang

2014, 13(6):  33-37. 

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Magnetization of free electron gas for the entire regime is an ideal example for the teaching of thermodynamics and
statistical mechanics et al. The entire regime includes degenerate and non-degenerate, classical and quantum, non-relativistic and relativistic, low magnetic field and high magnetic field et al. From this, students can understand the conception of physics and the differences between application range of physical theory. The relativistic parts about magnetization of electron gas come from the results of author, which can be referenced from corresponding references. However, the magnetic phase transition in this paper is also an ideal example for the teaching and the study of general phase transitions.

The Definition and Applications of Lick/IDS Indices

LI Mao-Cai, LI Zhong-Mu, CHEN Li, ZHANG Qian, MAO Cai-Yan

2014, 13(6):  38-41. 

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This paper sums up the definition, method of calculation, fitting function and classification of Lick/IDS indices. In
addition, the applications and research content progress of Lick/IDS indices are introduced.

Based on Multi-scale Filtering and Fingerprint Singular Plural Filtering Feature Extraction Algorithm

CHEN Jing, ZHANG Su

2014, 13(6):  42-44. 

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According to fingerprint characteristics and the characteristics of the fingerprint singular points, the methods of multiscale filtering and complex filtering are used to analyze fingerprint singularity feature extraction algorithm in order to improve the efficiency of automatic fingerprint identification.

The Application Problems of Low Resistance Grounding Mode and the Countermeasure

CHEN Xiao-Hong

2014, 13(6):  45-47. 

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Taking Pangang power system as an example, the paper introduces configuration method of low resistance grounding system and the application problems of low resistance grounding system are analyzed; the corresponding solutions are proposed; it provides a reference for the low resistance grounding mode in other distribution system.

Mammals Survey of Lanping Yunling Provincial Nature Reserve

CUI Mao-Huan, YANG Guo-Bin, YANG Shi-Jian

2014, 13(6):  48-53. 

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A field survey was conducted for 3 times in Lanping Yunling Nature Reserve during 2010 to 2011. The results combined with the documented literatures, suggested that there were 80 species of mammals belonging to 9 orders and 25 families in taxonomy.Mammal fauna analysis showed that 62 species belonged to Oriental species; 9 species belonged to Palaearctic species; 9 species belonged to widely distributed species; 5 of 80 belonged to Rank Ⅰ of List of Chinese National Key Protected Species，and 11of 80 were listed in Rank Ⅱ of the list. Some of species were listed into the Red of Threatened Species of IUCN and the Appendix Ⅰ, Appendix Ⅱ and Appendix Ⅲ of CITES. Some management and conservation measures were proposed to protect the abundant mammalian resources in Lanping Yunling Nature Reserve.

Investigation on the Resources of Macrofungi in Cangshan Mountain National Nature Reserve

LUO Zong-Long, SU Xi-Jun, DAI Qi, TAO Xing-Chen, SU Hong-Yan

2014, 13(6):  54-59. 

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Objective: To find out the resources of macrofungi in Cangshan Mountain National Nature Reserve. Methods: The
methods of Zonation survey and Classical taxonomic were adopted to identify the species of macrofungi in Cangshan Mountain.Results: The investigation indicated that there were 2 subphyla, 5 classes, 50 families, 114 genera, 279 species of macrofungi in Cangshan Mountain National Nature Reserve. Conclusion: The resources of macrofungi are abundant in Cangshan Mountain National Nature Reserve. Among the species found in this area, Tricholoma matsutake, Hericium erinaceus, Cantharellus cibarius, Russula virescens, Termitomyces albuminosus, Lactarius deliciosus are famous species with potential value for utilization.

Primary Study on Characteristics of Nitrogen and Phosphorus Losses in the Typical Small Watershed of
the Northern Area of Erhai Lake

TANG Jia, LI De-Pin, JIANG Xu

2014, 13(6):  60-62. 

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The relationships of pollutant concentrations and precipitation-runoff were monitored at the outlets of the Fengyu River in July 2011. The results showed that the loads of nitrogen and phosphorus increased with the increasing of flux. Furthermore, the peak of pollutant concentrations early occurred than the peak of flux. For reasonably interpreting law of no-point source pollutants losses, the interval time of rainfall as well as production and life style of upstream should be considered in the future study.

Study on the Dairy and Brewery Wastewater Treatment with Microbial Flocculants

YANG Lin, ZHU Dan, HU Zhou, TIAN Chun-Mei, SU Hong-Yan

2014, 13(6):  63-65. 

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The results of orthogonal and single factor tests indicated that the microbial flocculants produced by EH-5 had impressed ability to flocculate dairy and brewery wastewater. The removal rate of COD were 74.79% and 64.15%；the removal rate of colority were 75.00% and 69.57%. The turbidity removal rate was 93.78% and 95.51%.

Progresses and Perspectives of Ecology and Population Structure of Cryptococcus neoformans

TAO Xing-Chen, LIU Xiao-Ying, LIU Shuo-Ran, SU Hong-Yan

2014, 13(6):  66-70. 

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Cryptococcus neoformans is a pathogenic fungi which is widely spread in the environment, and its epidemiology is closely related to the ecology of the various variants. In recent years, with the gradual increasing of cryptococcosis incidence, the study of ecology of its various variants, population structure in natural environment and changes in seasonal epidemics has great significance for effective prevention and control of the occurrence and transmission of cryptococcosis. This paper reviews the advancements in the study of ecology, population structure in natural environment and changes in seasonal epidemics of Cryptococcus neoformans at domestic and abroad.

Investigation on the Nematode-trapping Fungi in Baima Snow Mountain

SU Xi-Jun, LUO Zong-Long, ZHU Dan, LIU Shuo-Ran, SU Hong-Yan

2014, 13(6):  71-73. 

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Objective: To investigate the species and distribution of nematode-trapping fungi in Baima Snow Mountain. Methods: 97 yak dung and 95 soil samples were taken from Baima Snow Mountain in August 2012 which were followed by isolated culture and identify work in lab. Results: 16 species including 1 unnamed species which belongs to 4 categories were isolated from samples. Among the isolated species, Arthrobotrys oligospora and Arthrobotrys thaumasium both were found in soil and yak dung with high occurrence. Conclusion: The species isolated from soil samples were much richer than yak dung. Species with adhesive nets were high frequently found.

A Sensory Comprehensive Evaluation Method for Jelly with Red Wine and Honey
Based on Fuzzy Mathematics

FU Xiao-Ping, LI Yong-Qiang, JIANG Zhi-Jun, DONG Wen-Ming

2014, 13(6):  74-77. 

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A flavored jelly was prepared by using red wine and honey as raw materials. The aim was to study the optimum production formula of jelly. The jelly developed with beautiful color, unique flavor and health function. The best formula was determined by sensory evaluation and fuzzy comprehensive assessment of the product. The formula of flavored jelly was that red wine 2%, honey 3%, sugar 3%, carrageenan 1.4% and citric acid 0.2%.

The SWOT and Target Orientation of the Leisure Sport in the Northwest of Yunnan Province

MENG Xin-Xin

2014, 13(6):  78-80. 

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In this article, the research object is the leisure sport resources in the northwest of Yunnan Province. The strengths, opportunities, weaknesses and threatens about the leisure sport development are enumerated in the SWOT. And then, the target of the development which established a foundation of the next research is oriented.

Difficulties and Countermeasures of Constructing the Physical Education and Health Curriculum System in Municipal（Prefectural）Universities of Yunnan

GAO Bing-Xian, SHI Hong-Qiang

2014, 13(6):  81-84. 

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Physical education and health curriculum system construction have been the focus of physical education curriculum
reform in the municipal（prefectural）level universities. Because of geographical, ethnic, cultural and other factors, sports and health course reform in continuing to promote encountered a lot of difficulties and problems. This paper has made an analysis of difficulties and countermeasures of curriculum system construction in order to identify problems and analyze the reasons, which provides a theoretical basis for Yunnan local physical education and health curriculum system.

Analysis of Published Papers in Journal of Dali University（Natural Science）from 2009 to 2013

YUAN Xia

2014, 13(6):  85-89. 

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In order to find countermeasures by making an analysis of the Natural Science papers in Journal of Dali University, 229 papers of 9 volumes of Journal of Dali University（Natural Science）from 2009 to 2013 were used as the samples. With the help of advanced search in CNKI and manual statistics, the paper has made an analysis of the published papers in Journal of Dali University （Natural Science）during 2009 to 2013 from four aspects: the number of published papers, funded papers, cited papers and publication delay. The result showed that the number of published papers approximately tended to be stable, that control efforts on publication delay did well, and that ratio of funded papers rose year by year. It had been cited for 240 times, and the average frequency for citing was 1.33 times per article.

The Connection of University Calculus and the High School Mathematics

YANG Ze-Heng, FU Zhuo-Ru

2014, 13(6):  90-94. 

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After making an analysis of the present situation about high school mathematics curriculum reform, this paper gives some educational reform suggestions about university calculus.

Teaching Reform and Practice of Higher Mathematics of Economy and Management at the Independent
Colleges

GUO Zhan-Wei, LIU Xue-Kun

2014, 13(6):  95-98. 

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The number of students in independent colleges has accounted for one-third of the university students of province in
Guangdong. The quality of teaching is more and more emphasized by education department and society. And classroom teaching of mathematics always has been the most difficult in independent colleges. Firstly, according to the actual needs of independent colleges of economy and management professional students, we put forward necessity and feasibility of hierarchical teaching method, and then, according to the purpose of different levels, we probe into the specific contents in the teaching method and the final assessment of the hierarchical teaching method. Finally, the paper illustrates effect of hierarchical teaching method after implementation the teaching.

Foundation Emulsion of Mirabilis jalapa to Manufacture

WU Yun, MA Jia-Fang, CAO Yan-Rong, ZHENG Li-Si, ZHAO Jing

2014, 13(6):  99-100. 

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Foundation emulsion was designed and made by using the endosperm extracted from seed of Mirabilis jalapa. Related properties were determined. Medical Test showed that the functions had good concealing and stability, and it did not include UV absorption agent. The preparation method was feasible in laboratory.