Table of Content

    25 July 2018, Volume 39 Issue 4
    Mathematics
    Maximum Norm Estimation and Application of Jensen Inequalities
    XING Jiasheng,YANG Yichuan
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  1-4. 
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    A direct proof of Jensen inequalities is given by using the maximum norm estimation method.Applications and development of these inequalities are illustrated.

    Upper Bounds of Signless Laplacian Energy for Circulant Graphs
    XU Youzhuan
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  5-8. 
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    Given a graph G,the matrix Q=D+A is called the signless Laplacian matrix,where A is the adjacency matrix and D is the diagonal matrix of vertex degrees.The signless Laplacian energy  is the sum of the absolute values of the differences between the eigenvalues of matrix Q and the arithmetic mean of the vertex degrees of the graph.We discuss the upper bounds of signless Laplacians energy for circulant graphs,and get some significant results.

    Computer
    Solving Integer Ambiguity Based on Genetic Algorithm with Improved Simulated Annealing
    LI Honggang,WANG Yaqi,LI Xueqing,KANG Junjian
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  9-14. 
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    Cholesky decomposition is adopted to decorrelate the float solution and its covariance matrix,and the correlation of each ambiguity float estimation can be eliminated.Then simulated annealing is applied to the population iteration,and the integer ambiguity optimization results can be determined by using the improving algorithm.The simulation results show that the improved algorithm can reduce the speed of convergence and improve the efficiency of the algorithm.

    A Face Verification System  Based on Face Recognition Technology
    WANG Qi,TIAN Qing,ZHAO Ge,QU Hongquan
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  15-19. 
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    In order to solve the problem of low efficiency,poor real-time and insufficient use of identity information in face recognition system in complex scenes,this paper presents a face verification system  based on face recognition technology.This system defines the region of interest  for multi-face videos.It can narrow the range of face detection and recognition,improve recognition speed and accuracy in complex scenes.To reduce the impact of strong backlight on face detection and feature extraction,light compensation method is applied.

    RFID Data Stream Cleaning Algorithm of Internet of Ships Based on MBF
    DONG Hui,MA Jian,FANG Xiao,YAO Hongliang
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  20-24. 
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    Aiming at the problem that the redundant data in the radio frequency identification (RFID) data stream of internet of ship affect the work efficiency,this paper proposes a RFID redundant data cleaning algorithm based on improved Bloom Filter.The matrix Bloom Filter model is constructed based on the analysis of the traditional Bloom Filter,and the cleaning process of the redundant data is given based on this model.Simulation experiment shows that the larger RFID data flow,the more obvious the data cleaning effect.

    Information and communication
    Fast Cooperative Spectrum Sensing Method Based on Improved Particle Swarm Optimization
    LIU Yaofeng,DENG Yu,SHU Ting,LEI Kejun
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  25-31. 
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    To improve the computation efficiency and the sensing performance,a new linear cooperative spectrum sensing algorithm is developed for cognitive radio.In the proposed method,the improved particle swarm optimization (PSO) is utilized to obtain the optimal weight vector to maximize the probability of detection by dynamically changing the inertia weight in each iteration.Due to using the of time varying inertia weight,the proposed PSO based cooperative spectrum sensing algorithm has good global exploration capability at the beginning of the swarm flight,and with the increase in the number of iterations,especially in the late swarm flight,has good local search capability.The simulation results illustrate that the proposed method has faster convergence speed than the method based on the traditional PSO.At the same time,it shows better detection performance than both the method based on modified deflection coefficient  and the method based  on traditional PSO.The simulation results under different sensing scenarios validate the effectiveness of the proposed cooperative sensing algorithm.

    Extended Horspool Algorithm and Its Application in Square Hmong String Pattern Matching
    ZENG Lei,MO Liping,LIU Biyu,TANG Aobin,MO Chunwang,YIN Juan
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  32-37. 
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    A string matching algorithm is proposed for the matching of the square Hmong characters in Hmong environment based on the  the principle and characteristics of the Horspool algorithm.The proposed algorithm extends the character processing units in the Horspool algorithm according to the encoding method of the square Hmong characters and the characteristics of Hmong string searching.The experimental results show that the algorithm shows a good performance in the Hmong pattern matching of single words,double words and multiple words,and can be used to solve the problem of fast retrieval of the square Hmong information.

    Finite Element Analysis Based on Modeling in AutoCAD
    YANG Mingya,SUN Yuanyuan,YANG Yingjie
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  38-42. 
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    In order to improve the efficiency of modeling,modeling  is practiced in AutoCAD  software and  saved as a SAT graph through the region operation,and then imported  into ANSYS software.Compared with modeling through ANSYS,modeling thorugh  AutoCAD model is easy,fast,and efficient

    Near-End Crosstalk Failure Diagnosis and Elimination in Intelligent Wiring System
    ZHANG Zhenzhong
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  43-47. 
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    For different  cables under the conditions of different frequency in different link ways,NEXT indexes are tested and the possible failures are diagnosed.These data provide reference for system maintenance,daily management,and system upgrade.

    Civil Engineering
    Numerical Analysis of Finger-Point Beams Reinforced with CFRP Strips
    XUE Meihui,WANG Jianxing,WEI Changxi
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  48-53. 
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    Based on finite element analysis (FEA) in Ansys software,a numerical simulation is proposed to accurately describe the damage behavior and mechanical performance of the model.The results show that the ultimate bearing capacity is increased by CFRP.The stress is mainly concentrated on the CFRP material.

    Biological resources
    Activity and Diversity of Halophilic and Halotolerant Amylase-Producing Bacteria Isolated from Sandy Soil from Tianmo Desert
    YANG Yuting,WU Qiulei,ZHANG Jun,ZHANG Li,HE Jianwu,LIU Zhuxiang,CHEN Yiguang
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  54-59. 
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    In this study,the amylase activities of 76 halophilic and halotolerant bacteria isolated from the sandy soil samples collected from the Tianmo Desert in Zhangjiakou City,Hebei Province,China,were studied by using the plate hydrolysis spot method.The results showed that the amylase activities of 34 out of the 76 (44.7%) strains tested were observed,in which 6 strains showed relatively strong amylase activities.Then these 34 strains were submitted for 16S rRNA gene amplification and phylogenetic analysis,and the results suggested that the 34 amylase-positive strains represented 18 species,being members of 8 genera (Streptomyces,Bacillus,Gracilibacillus,Halobacillus,Oceanobacillus,Piscibacillus,Thalassobacillus,Virgibacillus) of 2 families (Streptomycetaceae,Bacillaceae) in 2 phyla (Actinobacteria,Firmicutes) of the domain Bacteria.The results also suggested that the 6 strongly amylase-positive strains all belonged to the family Bacillaceae of the phylum Firmicutes and were members of 3 genera:strains JSM 1684012,JSM 1684041 and JSM 1685098 belonged to the genus Bacillus,and strains JSM 1684067 and JSM 1685082 belonged to the genus Gracilibacillus,and strain JSM 1685081 belonged to the genus Halobacillus.In conclusion,the results presented above showed that there are a number of amylase-producing strains in halophilic and halotolerant bacteria isolated from sandy soil samples collected from the Tianmo Desert in Zhangjiakou City,Hebei Province,China,and the amylase-positive strains show abundant phylogenetic biodiversity.

    A New Cave Species of the Genus Triplophysa from Guizhou Province,China
    LI Chunqing,LIU Tao,LI Rong,LI Weixian
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  60-63. 
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    A new species of troglobitic loach,Triplophysa baotianensis sp. nov.,is described based on the specimens collected from a cave (25°24′ 17.16″N,104°44′ 40.37″E),Baotian Town,Pan County,Guizhou Province,China.This new species is the firstly recorded Triplophysa fish distributed in the Nanpanjiang water system.Compared with the five loach (T. nasobarbatula,T. zhenfengensis,T. longliensis,T. longibarbatus and T. jiarongensis) distributed in Guizhou Province,the new species is similar to T. zhenfengensis,but it can be distinguished from T. zhenfengensis by the following characteristics:①the flatted pectoral fin and pelvic fin are cross-shaped with the body (vs. the trend of the pectoral fin and pelvic fin are normal);②the starting point of the dorsal fin is in front of  the beginning of the pelvic fin (vs. the starting point of the dorsal fin is after the beginning of the pelvic fin);③the surface of the body is bare (vs. the body is clearly scaly);④the nasal valves develop into a short whisker (vs. the nasal valves are not a short whisker);⑤it is distributed in the Nanpanjiang water system (vs. it is distributed in the Beipanjiang water system).

    Water Environment Management of the East Dongting Lake Based on the "River Chief System"
    QING Yi,LONG Fang
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  64-68. 
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    Through analyzing the present situation of the water environment of east Dongting Lake and the causes for exceeding class-III limit in 2016,this paper points out that implementation of the "River Chief System" will produce positive influence in clarifying rights and responsibilities,launching targeted program and practicing of social coordinated management.However,the full implementation is confronted with  complexity of incoming water,lack of basic scientific researches,insufficient local finance and many other problems.It is suggested that the water environment monitoring network of the east Dongting Lake shall be practiced in an integrated way,thereby realizing "one cross section-one river chief,one cross section-one file,one cross section-one strategy" in the working system and practicing the measures of "monthly release, quarterly supervision and notification,and annual assessment".The   paper advocates that  priority should be given to the treatment of limit-exceeding water problems in the east Dongting Lake area,making full use of information platform and the public network platform with basic data to encourage public participation,strengthen the basic scientific researches,establish ecological compensation mechanism as early as possible,as well as pay attention to regulation and guidance through economic means.

    Chemistry and chemical engineering
    Inhibitory Kinetic Fluorimetric Determination of Bisphenol A Based on Oxidation of Carbon Quantum Dots with Hydrogen Peroxide
    WEI Na,TANG Jiaorong,YU Shuyi,QIU Ziqing,HUANG Xiaoxia,WANG Yilin
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  69-73. 
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    Carbon quantum dots (CQDs) were prepared by hydrothermal treatment with Lemon peel as raw material.Peroxyl radical produced by Fenton-like reagent (Fe3++H2O2) oxidizes CQDs and produces the quenching of its fluorescence.It is found that bisphenol A (BPA) has an inhibitory effect on the redox reaction.Based on this observation,an inhibitory kinetic fluorimetric method is reported for the determination of BPA.Under the optimum experimental conditions,the linear range of the determination is 4.0~60.0 mg/L,and the detection limit (3σ/k) for BPA is 2.04 mg/L.The proposed method has been used for the determination of BPA in the shopping receipt and tap waters samples with recoveries of 93%~108%.

    Determination of Trace Elements in High ConductivityCopper by Matrix Matching of ICP-AES
    LIU Bangfu
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  74-77. 
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    The ICP-AES matrix matching method has been applied to determine the trace elements Ni,Be,Co,and Si in high conductivity copper,and the uncertainty of those elements has been analyzed.The results showed that the mass ratios of those elements were:Ni 2.13 mg/kg,Mg 0.088 mg/kg,Be 0 mg/kg,Co 0 mg/kg,Si 0.22 mg/kg and the main factors which determine the  uncertainty were the measurement repeatability and recovery rate.

    Characteristic column.Study on Wuling Mountain Area
    Sustainable Development of Rural Tourism in Distinctive Towns in  Wuling Mountain Area
    XIE Zhengfa
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  78-82. 
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    This study made in-depth interviews with and surveys of the 6 groups of stakeholders who have benefited from poverty alleviation through rural tourism in the 12 distinctive towns in the Wuling Mountain Area.It is  found that there were problems such as difficulties in coordinated advancement,deficient protection of peasants' benefit,serious homogeneity of the products,focus on short-term profits and so on.It is then suggested to take the perspective of sustainable development to solve the problems in poverty alleviation through tourism.

    Health-Care Tourism Development in Zhangjiajie City
    LI Fengmei,LI Yan,XIANG Changguo
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  83-86. 
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    The status quo and problems of  tourism in Zhangjiajie City are analyzed.According to the advantages of health-care tourism,some corresponding countermeasures and suggestions are put forward.

    Sports
    Criteria and Methods Evaluating of College PE Teachers'  Teaching Skills
    YANG Hualing
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  87-90. 
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    The improvement of PE teachers' teaching skills is the fundamental purpose of evaluation.Therefore,the basic evaluation principles must take into account the differences in the sports items,the  target students,and the ages of teachers,and the evaluation criteria should focus on the teaching of basic skills,sports skills and teaching skills of PE teachers.From a scientific and rational perspective,the main methods of evaluation must be based on on-site teaching evaluation by the  school experts network,evaluation by the other experts,feedback from students and mutual assessment.

    Economics
    Relationship Between Tax Revenue and GDP Growth in Anhui Province Based on Stepwise Regression
    LIN Tianshui,MA Yongmei
    Journal of Jishou University(Natural Sciences Edition), 2018, 39(4):  91-96. 
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    Based on the data of tax revenue and GDP in Anhui Province from 1994 to 2014,the empirical study using SPSS software shows that the tax revenue increases with the increase of GDP,demonstrating a general  linear relationship.The gradual regression of GDP and tax revenue shows that  the business tax and domestic value-added tax have significant impact on GDP,and the tertiary industry has significant impact on the tax revenue.

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