Journal of Dali University

Determing the Distribution of the Sum of Independent Random Variables by Using Additivity

WANG Fanbin

2014, 13(12): 1-1.

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This paper aims to determine the distribution of the sum of a kind of independent random variables, and discuss the
advantages and disadvantages of convolution formula and additivity. It points out that in some practical problems, with less effort and
better result, the method of additivity can avoid complexity of convolution formula and achieve goals that convolution formula can not.

Inverse Laplace Transform with Parameter and Its Applications

FU Yunjin

2014, 13(12): 3-5.

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This paper introduces the Laplace transform with parameter and its inverse transform, lists uniqueness theorem and some
common properties of inverse Laplace transform with parameter, and illustrates its applications.

Application of Grey Prediction Model to College Students' Abnormal Casualties

HAN Tongyao, HE Weiquan, ZENG Hui, HUA Cuncai

2014, 13(12): 6-10.

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Abnormal casualties in universities increase gradually and challenge universities' normal management model. Since the
occurrence time of abnormal casualties is uncertain and random, this paper applies the grey prediction model GM（1,1）to predict the
year of future students' casualties for a university in Yunnan, based on its statistics between 2002-2012 . It is concluded that next time
when the university incurs serious abnormal casualties is 2014. Therefore, some measures are proposed for universities to strengthen
their precaution and management.

Ontology Learning Algorithm Based on TLP Empirical Model

HE Guoying，GAO Wei

2014, 13(12): 11-14.

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By combing truncated Lasso penalty（TLP）with ontology regression algorithm, this paper proposes the new ontology
similarity computation and ontology mapping algorithm based on TLP empirical model. The new algorithm inherits the characteristics
of TCP and has the quality of unbiased parameter estimation. The experiment shows that the new algorithm achieves higher efficiency
in specific applications when it is applied to the GO and the physical education ontology.

Optimization Biclustering Algorithm Based on Parallel Non-Dominated
Sorting Genetic AlgorithmⅡ

WANG Limei，CAI Jianfeng，ZHONG Yiwen，PENG Fuqiang

2014, 13(12): 15-20.

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Biclustering is a very practical data mining technique in microarray gene expression data analysis and it is a way to cluster
both microarray genes and conditions simultaneously, which is used to excavate the biological mode reflected by the gene subset set
under the condition subset. The processing efficiency of traditional biclustering algorithm for large gene expression data is low, so this
paper explores a new research method and idea, i.e. applying gene expression data biclustering on jMetal platform. Also the parallel
strategy is proposed to improve the efficiency of the algorithm. Experiments on two datasets, yeast cell dataset and human B-cell
dataset, show that our approach exhibits better and more stable performance than other multi-objective biclustering algorithms.

Restricted Node Multicut Problem in Trees

YANG Huijuan

2014, 13(12): 21-25.

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The problem of cut set holds an important position in graph theory and combinatorial optimization and restricted node
multicut is a significant problem in cut set. And restricted node multicut problem in trees is worth studying. The paper first explains
that the node multicut problem is hard, then designs an algorithm with the approximate value of 2 and time complexity of by applying
complementary slackness conditions in linear programming theory, and finally further explains the solution from the algorithm is a halfinteger.

Improvement in SPIN Protocol Based on Dynamic Routing

FENG Libo, LI Quan, ZHANG Mei, LUO Guilan

2014, 13(12): 26-30.

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Problems of SPIN's（Sensor Protocol for Information via Negotiation） too complicated data forwarding and repeated
forwarding of the same packet affect its performance on network throughput and increase the packet loss rate and reduce the network
lifetime. To solve these problems, a SPIN protocol based on dynamic routing called D-SPIN protocol is proposed, which is based on
SPIN but adds the strategies of dynamic routing table creation and algorithm and next hop id verification and selective forwarding. DSPIN
can effectively improve network throughput, decrease the packet loss rate and extend the network delay. NS2 software is used to
simulate and the results show that D-SPIN protocol has a more significant improvement in throughput, packet loss rate and the network
delay than SPIN protocol.

Research on Evaluation of Teaching Material Quality Based on BP Neural Network

CHEN Jiangli, ZHANG Rong

2014, 13(12): 31-34.

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Evaluation of teaching material quality is the key link in teaching material management. In order to evaluate the quality of
teaching material scientifically and effectively, an evaluation model is established based on BP neural network. With the main work
such as the BP neural network building, training and classification finished, a teaching material quality evaluation model with higher
accuracy is set up. Analysis shows that the model is very practical and can evaluate in an efficient and scientific way.

Using Oblique Coordinate Axes for Two-Dimentional Symmetric Space-time Diagrams

DANG Xingju, ZHANG Yao, WU Wenliang

2014, 13(12): 35-39.

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Traditional two-dimentional space-time diagrams are often drawn with time and space axes perpendicular to each other in
the basic coordinate system but not perpendicular in other inertial coordinate systems. And per unit length of the same coordinate axis
in different coordinate systems usually represents different physical quantity. Therefore, Huang Xianmin proposes that space-time
diagrams should be symmetric and offers a special case but never explains its general drawing method. In fact, according to geometry
and special relativity, in two coordinate systems of symmetric space-time diagrams, the space axis of one coordinate system must be
perpendicular to the time axis of the other and the time axis of one coordinate system must be perpendicular to the space axis of the
other. In this diagram, although with oblique space-time axes, per unit length of axis in two symmetric coordinate systems represents
the same physical quantity. Other useful results are also obtained.

Research on the Design of the Dali University Campus Network Based on SDN

LUO Yanbi, ZHAO Wenchang, SUN Xiugui

2014, 13(12): 40-44.

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The theory of SDN is that the control platform and data platform of network are separated and the programmable controller
is responsible for network data forwarding. The key technology of SDN is OpenFlow. Based on SDN technology, the architecture,
topology, the control platform and the virtual control platform of Dali University campus network are designed, according to the
application characteristics of the campus network. The performance of the campus network is also analysed.

Hyper-wavelet Lifting Scheme and its Application in Image Compression

ZHONG Mantian

2014, 13(12): 45-47.

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In order to explore and examine the application of hyper-wavelet lifting scheme in image compression, based on wavelet
analysis theory and Matlab, this study applies hyper-wavelet lifting scheme, carries out two compressions of color images and blackand-
white images respectively and finally reaches the conclusion that the image compression technology of hyper-wavelet lifting
scheme can be used to make multi-media network videos.

Hematological Observation of Tylototriton shanjing

SONG Shaoping, YANG Guohui

2014, 13(12): 48-51.

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The study observes morphological features and counts numbers of peripheral blood cells of Tylototriton shanjing from
Cangshan Mountain by routine blood smears, Wright-Giemsa stain and hemacytometry.The results show that erythrocytes in peripheral
blood cells have nucleus, elliptic or pear-shaped, with a mean density of 1.48×105/mm³, and most leucocytes are round, with a mean
density of 0.17×105/mm³. Lymphocytes are the most numerous in leucocytes, followed in order by neutrophils, eosinophils, monocytes
and basophils. The results are also compared with other vertebrates and the relationship between the number of blood cells and
evolution, life habits and environment is discussed.

Analysis of Drought in Yunnan: Causes and Countermeasures

KONG Lingfang, YANG Xiaoyan

2014, 13(12): 52-55.

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Yunnan is a province where drought occurs frequently. But in recent years, drought occurs with increasing frequency,
extent and greater impact. This paper analyzes its developments, causes, harm, and countermeasures against drought and attempts to
provide reference for further research of drought in Yunnan.

Screening of High-performance Biocontrol Strains of Nematode-trapping Fungi from Yak Dung in
Plateau Pastures of Yunnan Province

SHU Fanfan, DAI Qi, SU Xijun, SU Zifeng, SU Hongyan

2014, 13(12): 56-59.

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Objective: To screen high efficiency biocontrol strains of nematode-trapping fungi isolated from yak dung in plateau
pastures of Yunnan Province. Methods: Twelve nematode-trapping fungi of A. oligospora, A. musiformis, D. ellipsospora, D. leptospora
isolated from Dali Huadianba pasture, Zhongdian Dariba pasture, Baima Snow Mountain pasture were tested in pepsin-hydrochloric
acid and the nematode-trapping activity was determined subsequently. Results: Half of isolates survived in pepsin-hydrochloric acid
treatment and three isolates A. oligospora from Huadianba pasture and Dariba pasture and D. ellipsospora from Baima Snow Mountain
pasture displayed high nematode- trapping activity under laboratory conditions. Conclusion: Three high efficiency biocontrol
nematode-trapping fungi were obtained and this research accumulated biocontrol strain resources in the biological control of nematode
disease of yak and other animals.

On Frontier Sports and Construction of Harmonious Society in Frontier Ethnic Regions

QIU Liangwu, BAO Wenli, ZHANG Qi

2014, 13(12): 60-63.

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Social harmony in frontier ethnic regions is the important part of harmonious society in our country. A real harmonious
society cannot be constructed without harmony in frontier ethnic regions. Frontier sports have their special functions and frontier
problems in Yunnan is typical and representative in China. This paper explores the relation between frontier sports in Yunnan and
construction of harmonious society in frontier ethnic regions, and provides some theoretical reference for construction of harmonious
society in Yunnan and even in China.

Investigation and Analysis of Employment Anxiety among Physical Education Majors at Dali University

DUAN Yimei, JIANG Fengyun, YANG Xiaoli, LU Guotian

2014, 13(12): 64-67.

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This paper investigates and analyzes employment anxiety among physical education graduates of Dali University, puts
forward suggestions and provides a basis for perfecting the university employment guidance theory system. The results show that there
is no gender difference in total scores of anxiety among physical education graduates, but a significant difference in factors of
employment fear and interview anxiety, with girls higher than boys. The level of employment anxiety among graduates from rural areas
is significantly higher than those from urban areas. The level of anxiety among graduates with social practice experience is significantly
lower than those without social practice experience. There is no significant difference among graduates with different employment
intentions.

Role of Football Games in Constructing Harmonious Naxi Villages

HE Xijian, FENG Zhaoli

2014, 13(12): 68-71.

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Adopting methods such as literature analysis, questionnaires, interviews and mathematical statistics, this paper studies the
role of football games in building harmonious Naxi villages. It concludes that villagers are vaguely aware of the relation between football
games and the construction of harmonious society and that most of their ways of leisure are healthy and football games become a
"religious" activity in modern Naxi villages. This paper also proposes that more publicity about the relation between football games and
the construction of harmonious society should be given to villagers, that they should be guided to know the value and meaning of
participating in football games and that the match system should be improved constantly.

Folk Sports from a Cultural Perspective
—— A Study of Dali Bai Ethnic Traditional Sports

SHI Hongqiang, LI Wen

2014, 13(12): 72-76.

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Adopting methods such as literature analysis, field investigation and expert interviews and a cultural perspective, this
paper holds that Dali Bai traditional sports have regional, ethnic and religious characteristics and that Bai traditional sports can meet
individual needs and enhance national cohesion. However, due to the impact of modern commodity economy, Bai traditional sports in
the modern business world are simplified and commercialized and spiritual values of folk sports are disappearing. Only by increasing
efforts to support Bai ethnic traditional sports and popularizing the sports culture can they be better inherited.

The Investigation and Analysis of Motivation and Behavior of Primary School PE and Health Teachers
Participating in the " National Teacher Training Plan" in Yunnan Minority Areas

LU Guotian, DUAN Yimei

2014, 13(12): 77-80.

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By using methods of literature analysis, questionnaires and expert interviews, the paper investigates and analyzes the first
50 primary school physical education and health teachers of "National Teacher Training Plan" in Dali University, interns and
internship schools and especially the motivation and behavior of these teachers from Dali, Lijiang, Dehong, Baoshan. The results show
that the first "National Teacher Training Plan" for primary school physical education and health teachers is a success, but there are still
some problems such as ideological education, curriculum arrangement and teaching staff.

Assessment of Case Teaching Effect Based on the Third-Party Evaluation

ZHU Xiaoping

2014, 13(12): 81-84.

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