Table of Content

15 April 2013, Volume 12 Issue 4

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Periodic Solutions for a Class of Second Order Systems with the Subconvex Potential

WANG Shao-Min, YANG Cun-Ji

2013, 12(4):  1-3. 

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The purpose of this paper is to study the existence of periodic solutions of the second order systems. One new existence theorem is obtained by the least action principle.

Dresher Average Monotonicity and the Other Prove

FU Yun-Jin

2013, 12(4):  4-5. 

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The monotonicity and other prove of two parameters of Dresher average are given. By the monotonicity, three property inequalities are obtained.

Decision-Making Research Based on Bayesian Formula

ZHANG Rong, LI Zi-Ping

2013, 12(4):  6-8. 

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Based on the objective investigation, we can modify the priori probability by using Bayesian formula, and provide more reliable information for decision makers. This article gives an example about the Bayesian formula application in economy decision-making, and also uses Bayesian formula to explain certain credit and public opinion phenomena in life.

Using the Monte Carlo Method to Solve the Bertrand Odd

DUAN Ling-Yan, WANG Fan-Bin, YANG Jin- , WANG Peng-Cheng- , LIU Xu-Tao

2013, 12(4):  9-11. 

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This paper is designed to solve the geometric probability problem of Bertrand paradox by using Monte Carlo method. Owing to the result differences which are caused by three different samples space, Monte Carlo method is used to simulate random sampling to verify the rationality of third method. And with the help of the computer, Matlab software programming and mathematical statistics in the statistical counting method are used to solve this problem. This solution is not only using the Monte Carlo law principle reasonably, but also important to understand and know more of the randomness of the geometric probability problem.

The Design and Implement of Algorithm Expression Auto-generation for Modulo Reduction Operation

YANG Deng-Qi, LU Zheng-Fu, ZUO Guo-Chao

2013, 12(4):  12-16. 

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Polynomial modulo reduction operation is one of the fundamental issues of computer algebra, and widely used in coding algorithms and cryptographic system design. Based on the analysis on the mathematic foundation of modulo reduction operation, this paper designs the expression auto-generation algorithm of modulo reduction operation. This algorithm can auto-generate the algorithm expression of modulo reduction operation according to the selected word-width and modulo polynomial. This provides a foundation for the application of modulo reduction algorithm in the areas of cryptography and encode, such as ECC, AES and CL-PKC.

Investigation on University Students' Cyber-Communication

CA Run-Qin, HE Chang, CUN Xian-E

2013, 12(4):  17-22. 

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The rapid development of computer technology and wide use of the internet have changed people's life, study and way of communication, especially the modern college students who have great enthusiasm for the virtual world. This project has investigated cyber-communication among university students with questionnaire. In this paper, students’motivation and social problems in cybercommunication are analyzed. And then how to behave well in cyber-communication for students and how to solve these social problems effectively are put forward.

Research on Ecological Environment Monitoring Methods of Erhai Lake based on Internet of Things

LUO Gui-Lan, DENG Shou-Rong, ZHANG Mei, YA Zhi-Wu, BAO Yan

2013, 12(4):  23-28. 

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In response to the present situation of ecological environment monitoring lacked of intelligent real-time dynamic monitoring and control in Erhai lake, according to the ground monitoring technology, the monitoring content, monitoring object, type of monitoring and monitoring indicators and other monitoring goals of ecological environment monitoring of Erhai lake are positioned. A ecological environmental monitoring of methods and node design scheme of Erhai lake is proposed. Using the Internet of things, cloud computing, 3G and location services and other new technology, data sensing and processing mode, computing and data transmission, positioning method, the node function module, the hardware and software system is designed in this paper. Through the analysis of the experimental simulation and function test, the results show that the method provides a technique for ecological environment monitoring and protection of Erhai support and solution.

Binary Star Stellar Population Synthesis

LI Zhong-Mu

2013, 12(4):  29-32. 

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Observations showed that more than half stars are binaries, and the evolution of binaries is obviously different from single stars.Therefore, it is important to include binary evolution in stellar population synthesis. The importance of binaries for stellar population studies has been listed as one of six main challenges of stellar population synthesis in the next decades. This paper introduces the birth, main research content and progress of binary star stellar population synthesis.

The Probability Distribution of Incomplete Statistics in Completely Open Systems

LI Ya-Ya, HU Ya-Ya

2013, 12(4):  33-36. 

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A branch of the development of the nonextensive statistics is incomplete statistics. In this paper, the idea of nonextensive statistics is introduced briefly. According to the maximum entropy principle, the probability distribution based on the incomplete entropy is deduced in the completely open system, and the other six actual usable probability distributions can be obtained directly from it, which have provided theoretical basis for studying the particle system of complex physical systems.

Effect of Annealing Treatment on Photoelectric Property of Bulk Heterojunction Organic Solar Cell

MU Li-Ping, ZHENG Xiao-Hong

2013, 12(4):  37-39. 

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The organic solar cells with structure as ITO/PEDOT: PSS/P3HT + PCBM/LiF/Al are prepared to study the effect of annealing treatment on the property of battery. These devices are treated at 150 益for 60 min in an ambient atmosphere and the best power conversion efficiency（η_p）of 2.01％ is obtained at an open circuit voltage（Voc）of 0.57 V，a short circuit current density（Jsc）of 6.32 mA·cm-2，and a fill factor（FF）of 0.55. The device performance is significantly improved by thermal annealing. At last, the internal cause of annealing affecting the property of battery is discussed.

Density Functional Study of Chiral Structures and Spectral Properties of the Phenolic Compound Planchol E from
Pinecones of Pinus yunnanensis

YANG Ying, LIU Guang-Ming, LEI Ting, MANG Chao-Yong

2013, 12(4):  40-43. 

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The research on the relationship between stereo-chemical structures and chiral spectra is a fundamental job for the applications of chiral compounds in chiral materials and chiral drugs. The DFT computations of a chiral phenolic compound called as planchol E show that the experimental H1 NRMspectra display the feature of isomer 1 without intramolecular H-bond while the measured IR spectra originate from isomer 2 with intramolecular H-bond. Due to the intramolecular H-bond in isomer 2, there are many differences in both the chiral spectra as ECD and VCD and the achiral spectra as NRMand IR.

Present Situation on Molecular Taxonomy and Artificial Cultivation of Morchella

CAI Xiao-Ling, HE Wei, AN Fu-Quan, XU Long-Feng

2013, 12(4):  44-47. 

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The research advance in Morchella, including molecular taxonomy and artificial cultivation is summarized in order to provide a basis for further development and utilization.

A Study on the Growth and Some Physiological Characteristics of Microcystis aeruginosa Isolated from Erhai Lake

NI Zhao-Lin, WANG Tao- , ZHANG Ling- , LIN Li-Jia- , YANG Guan-Ying, ZHANG Yi, SHEN Yuan-Ying

2013, 12(4):  48-50. 

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Objective: To study on the growth law and some physiological characteristics of Microcystis aeruginosa isolated from Erhai lake. Methods: Purified Microcystis aeruginosa was separated with water droplets method and the spread plate method. Microscopic was used to count the density of algal cells；chlorophyll and carotenoid were extracted with 90% acetone and ELIASA determination of its content. Results: Microcystis aeruginosa cells density was in a linear relationship with OD665, R² =0.993 1；algal cell growth rate in sixth days reached a maximum of 0.524；chlorophyll and carotenoid content increased gradually over time. Conclusion: This Microcystis aeruginosa growth is in line with the“S”shaped curve；cell density and absorbance is linearly related and the growth rate of the maximum on the sixth day.

An Experimental Method in the Study of the Sensitive Sentences

ZHOU Peng-Sheng, MA Ming-He

2013, 12(4):  51-54. 

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Objective：To introduce a measure to study the sensitive sentences with eye-tracking guide lines. Methods: First using questionnaire to pick up several typical sensitive questions and sentences, then using eye-tracking system to attain some related guide lines, and finally comparing processing of different related regions. Results: The evaluation of three typical questions was from 208 college students, such as questions of social morality, politics attitude and privacy；the scores were 29.560±5.347,32.700±7.133 and 29.370±9.243, while there was of significant difference（F=13.222, P<0.01）；The dwell time of the word“prostitution”was 596.460±305.737 ms,the relative dwell time was 8.538±5.471, while the dwell time of word “democracy”was 363.361±248.781 ms, the relative dwell time
was 11.687±6.882. So there was different characteristic of processing between sensitive questions and other non-sensitive questions from the eye movement results of 40 college students. Conclusion: Our research shows that the new measure is effective to detect the processing of sensitive questions, and the measure can take suitable information for the related study in health statistics.

Research Progress on Preservation of Fruits

ZHU Dan, LI Li-Juan, HUANG Bi-Sheng

2013, 12(4):  55-57. 

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A series of fruit storage technology are reviewed, such as low temperature preservation, chemical preservation, atmosphere preservation and biological preservation. This paper has also discussed the pros and cons of these storage technologies and analyzed development trend of preservation.

Research about the Nutrients of Sedimenin in Erhai Lake and Three Upstream Primary Lakes

LI Yan-Peng, YANG Jie- , XIAO Wen, YANG Jian-Fang

2013, 12(4):  58-60. 

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Taking the 7 sampling lines of Erhai lake and the sediment of upper three primary lakes as the research object, the sediment about total phosphorus（TP）and total nitrogen（TN）has been tested, in order to analyze the TP and TN content of sediment in Erhai lake, distribution characteristics and influence factors. The result indicates that the seven sampling lines of TP average content reaches 266.80 mg / kg, maximum 818.20 mg / kg；the TN average content reaches 513.60 mg / kg, maximum 1 975.40 mg / kg. The TN and TP average content of sediment in upper three primary lake is 370.00 mg/kg；maximum content is 1 397.20 mg/kg；the TN average value is 52.43 mg/kg；the maximum is 140.20 mg/kg. TP and YN content is positive correlation with population and farmland area；TN content is also positive correlation with the annual per-capita income.

Investigation and Analysis about Entrepreneur Psychology of PE Students in Western Yunnan Colleges

WANG Hong, LIU Wei-Hong, YANG Ying, SHI Hong-Qiang, LIU Guo-Tian

2013, 12(4):  61-64. 

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The paper has adopted methods of literature survey, expert interviews, mathematical statistics, and other methods to investigate the PE students from the four universities in western Yunnan province. Through the investigation, we have learnt the entrepreneur psychology, entrepreneur intention, the difficulties and obstacles in order to make an analysis of factors that influence self-employment, which can provide a reference for the local college students to grasp some basic skills in entrepreneurship.

Comparative Study of University Physical Education Between Fujian and Taiwan

JIANG Rong

2013, 12(4):  65-68. 

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By using the methods of documentary and conversation, systematically comparative study on the aspects of current
development situation and expressive form of the campus sports culture of Fujian and Taiwan are researched. Because we are all the same roots and ancestors，so Taiwan and Fujian have identity on the culture production background and the campus sports culture. On the other hand，the difference of political and social system, eeonomie condition made the campus sports culture of Taiwan and mainland particularity．Understand both the similarities and differences of the campus sports culture of Fujian and Taiwan, seeking common ground while putting aside differences, will has positive significance in campus sports culture construction of Fujian province and even the whole country university.

The Enlightenment of Piaget's Theory of Cognitive Development to Computer Programming Teaching

SHI Wen-Hao, ZHU Xian-Feng, DAO Wei, LI Dong-Yan, ZHANG Jian-Liu

2013, 12(4):  69-73. 

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Piaget's theory of cognitive development has huge influence on the field of children’s psychological development, which is good to guide teaching activities. By Piaget's theory, we should note the followings in the teaching process of Computer Programming: set up course according to students' need；inspire the motive of students；be responsive to students' cognitive development；teaching content should be spiral；attach importance to practical activity；find problems by analyzing the students' learning process；encourage students to coordinate study.

Construction and Application of the Instrument Analysis Bilingual Courses Network Platform

DAI Yun, LIANG Zhi-Mao, LI Yi-Jun

2013, 12(4):  74-77. 

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To build a network platform which can meet the needs of teachers' teaching and students' self-study simultaneously, we have designed the course web system, in which contents and function module are designed according to the course needs so as to construct a network platform of the bilingual teaching of Instrument Analysis in Yunnan University of Nationalities. This system has a good practical application effect in more than three years and the improvement will be continuous.

The Teaching Reform and Practice in Experiment Course of Food Chemistry

FU Xiao-Ping, HUANG Ai-Xiang, GAO Bin, LI Ling-Fei

2013, 12(4):  78-79. 

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Experiment course of Food Chemistry is an important basic professional course for majors in Food Science & Engineering and Food Quality & Safety. To improve the teaching quality is an inevitable tendency. Experiment teaching reform is explored and practiced in this paper. Students’active participation is enhanced and students innovation ability is fostered through the reform.

The Research of Curriculum Reform and Evaluation System of Engineering Education in Colleges with Local Characteristics

SUN Xiu-Gui, LI Xia

2013, 12(4):  80-84. 

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Through an analysis of engineering education research, combined with the characteristics of the local universities, the paper has explored the engineering education reform on the view of the meeting the requirements of the engineering education cultivate objectives i.e. the professional and ethical responsibility. The basic factors that should be taken into account based on engineering design education are proposed and the three-step pedagogy is applied in the course design process as well as the necessity of analysis of engineering ethical education is discussed and the ways of the ethics education for Dali University is researched. At the same time, the advanced evaluation system of the engineering education system is designed by the fuzzy comprehensive evaluation method and its effectiveness and feasibility was confirmed through applications.

Reform of Tea Cultivation Techniques Course

YU Long-Feng, AN Fu-Quan

2013, 12(4):  85-87. 

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Tea Cultivation Techniques is a core training course which requires a close connection between the theory and practice. In the teaching process, action-oriented teaching mode which combines the classroom with internship enterprise is mainly adopted. Therefore, this course is reformed from the following aspects: curriculum design, course content, teaching methods and formats. Practice has proved that the effect of the reform is significant, which is welcomed by teachers and students.

The Disciplinary Difference of Students’Study Habits with Different Subjects in Dali University

XIE Yong, MA Zhi-Min

2013, 12(4):  88-92. 

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Objective：To understand the differences of college students’study habits with different academic background in Dali University. Methods: Questionnaire survey. We surveyed 1 131 college students of Liberal Arts, Science and Engineering, and Medical Science for their study habits. Results: Students in Liberal Arts discipline have better study habits in course learning, excellent study efficiency when sitting in class, and more active in study than other two discipline students. The Medical Science students are more active in acquiring new knowledge. Conclusion: The learning habits of students in Dali University differ by their disciplines. We should guide the students in developing good study habits based on the characteristics of their discipline and improve the quality of teaching.