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Binocular Stereo Matching Algorithm Based on Improved Census Transform AN Geng, YANG Fenlin, ZHOU Mengyuan, DOU Xinrui Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 29-33.   DOI: 10.13438/j.cnki.jdzk.2023.03.004 Abstract （327）      PDF（pc） （3514KB）（122）       Knowledge map    Save For the problem that the gray value of the center point of the traditional Census transform window is easily affected by noise and the global matching accuracy is low,a binocular stereo matching algorithm based on improved Census transform is proposed.First,the template value of bilateral filtering is used to replace the gray value of the center point of the Census transform window.In order to enhance the reliability of the initial cost calculation,Sobel operator and the absolute error of gray level and the matching cost of the algorithm are added for cost fusion.Then the dynamic cross region is selected to establish the relationship between adjacent parallaxes.Finally,the winner-take-all strategy is used to select the best disparity,and left and right consistency detection and guided filtering are used to optimize the disparity map.The experimental results show that compared with the traditional Census transform,the average mismatch rate of the algorithm is reduced by about 46% in the noiseless case and 53% in the noisy case.It is concluded that the improved algorithm has better accuracy and anti-noise ability. Reference | Related Articles | Metrics | Comments（0）

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Difficulties and Countermeasures of Blockchain Technology Application in Sports Industry KE Yangning Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 91-96.   DOI: 10.13438/j.cnki.jdzk.2023.03.014 Abstract （296）      PDF（pc） （457KB）（125）       Knowledge map    Save The application of blockchain technology in sports industry can promote decentralization,build trust mechanism,realize data value,strengthen property protection,and make sports industry a new source of power to promote high-quality economic development.However,the development of "blockchain + sports industry" is faced with such practical difficulties as prominent bottleneck of blockchain technology application,lack of compound talents,insufficiency of regulatory means,and application to be expanded.From improving the top-level design,increasing R & D investment,innovating regulatory technology,and strengthening personnel training,effective countermeasures are put forward for blockchain technology to drive the innovation and development of China's sports industry,so as to help the healthy and efficient development of "blockchain + sports industry". Reference | Related Articles | Metrics | Comments（0）

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Optimal Multiband Collaborative Spectrum Sensing Algorithm Based on Constrained PSO Algorithm TIAN Chong, LIU Tingting, TAN Zhewen, TAN Yuhao, LEI Kejun, YANG Xi Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 34-38.   DOI: 10.13438/j.cnki.jdzk.2023.03.005 Abstract （290）      PDF（pc） （454KB）（155）       Knowledge map    Save For the difficulties in controlling the total interference of the system with unconstrained PSO algorithm,an optimal multiband cooperative spectrum sensing method based on constrained Particle Swarm Optimization (PSO) algorithm is proposed.This algorithm transforms the constrained optimization problem into an unconstrained optimization problem by introducing a penalty function.Compared with the traditional solutions based on unconstrained PSO algorithm,the proposed constrained PSO algorithm can effectively solve the constrained multiband cooperative spectrum sensing optimization problem,and the optimal solution meets the constraints to avoid excessive total interference. Reference | Related Articles | Metrics | Comments（0）

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Delayed Predator-Prey Model with Stage-Structure and Cannibalism ZHANG Zizhen, ZHANG Weishi Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 1-8.   DOI: 10.13438/j.cnki.jdzk.2023.04.001 Abstract （276）      PDF（pc） （1054KB）（188）       Knowledge map    Save A delayed predator-prey model with stage-structure in prey population and cannibalism in predator population is studied in the present paper.Taking the pregnancy delay of predator population as the bifurcation parameter,local asymptotic stability and existence of local Hopf bifurcation of the model are discussed by using the eigenvalue method,and the critical value of the delay at which the local Hopf bifurcation exhibits is derived.Then,the properties of the Hopf bifurcation are studied by means of the central manifold method.Finally,a simulation example is performed to verify the correctness of the obtained results. Reference | Related Articles | Metrics | Comments（0）

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Synthesis,Crystal Structure of the Novel Rhodium（Ⅱ） Complex LIU Xue, TIAN Yiran, FENG Yangyang, XU Mingming, CHEN Honglai, HOU Wenming, ZHANG Zhenqiang, LIU Weiping Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 55-68.   DOI: 10.13438/j.cnki.jdzk.2023.04.007 Abstract （274）      PDF（pc） （10002KB）（180）       Knowledge map    Save Using rhodium（Ⅱ） acetate and trimethylrhodium acetate（Ⅱ） as the raw material,with 3,6-dibromo-9-(4-pyridinemethyl)-9H-carbazole (DBPMC1) and 3,6-dibromo-9-(3-pyridinemethyl)-9H-carbazole (DBPMC) as axial ligands,four rhodium（Ⅱ） carboxylates axial dibromo-9-pyridylmethyl-9H-carbazole complexes Rh(OOCR)4(DBPMC) were designed and synthesized.The single crystals of compounds were successfully cultured and their chemical structures were initially characterized by modern analytical methods such as H NMR,13C NMR and FT-IR.The results show that none of these four compounds has been reported in the literature,and they belong to a new type of rhodium carboxylate （Ⅱ） axial complex.The structure of the complex was determined by X-ray single crystal diffraction analysis to be composed of one molecule of rhodium（Ⅱ） carboxylate and two molecules of DBPMC ligand,and the molecular structure diagram and unit cell stacking diagram were drawn. Reference | Related Articles | Metrics | Comments（0）

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Research Status of Chinese Ethnic Traditional Sports Based on Knowledge Graph Visual Analysis LI Ping, WU Mengyi, ZHOU Zili, ZHANG Chunxiao Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 91-96.   DOI: 10.13438/j.cnki.jdzk.2023.04.011 Abstract （260）      PDF（pc） （3959KB）（194）       Knowledge map    Save Taking the research on traditional ethnic sports in China in recent 10 years as an example,this paper uses CiteSpace 6.1.R6 software and makes visualization analysis  of 211 core journal papers and 710 master and doctoral papers collected in CNKI database from 2010 to 2022,and analyzes the development of traditional ethnic sports from the chronological perspective.The results showed that in 2017,the number of papers published in the core journals of ethnic traditional sports research reached its peak,and then the number of related literatures decreased.The overall development trend can be summarized into three periods,namely stable period,peak period and cool-off period.Research hotspots include inheritance,development,traditional sports and sports culture,etc.The key words include "current situation","colleges and universities","development situation" and "Wushu".The research field mainly focuses on the connotation,development,inheritance and innovation of traditional national sports.The development of Chinese ethnic traditional sports has begun to take shape.The future research trend will be explored with the requirement of modernization development as guidance. Reference | Related Articles | Metrics | Comments（0）

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Investigation and Research on Wild Edible Plant Resources in the Mountaintop Platform of Zhangjiajie Tianmenshan National Forest Park,Hunan Province LI Yuxuan, JIN Jia, HU Jian, CHEN Gongxi, XIANG Xiaomei Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 46-53.   DOI: 10.13438/j.cnki.jdzk.2023.03.007 Abstract （260）      PDF（pc） （744KB）（119）       Knowledge map    Save In order to understand the current situation of wild edible plant resources in the mountaintop platform of Tianmenshan National Forest Park in Zhangjiajie,the wild edible resources in this area were statistically analyzed by field investigation,specimen collection and literature review.The results showed that there were 134 species of wild edible plants belonging to 102 genera and 49 families in the Mountaintop platform of Tianmenshan.Among them,Rosaceae,Compositae and Lily were the dominant families,and Rubus was the dominant genus.Herbs were the main life forms.The geographical composition of species is complex and diverse,with the largest proportion of endemic species in China.The edible category is mainly wild vegetables,and the nutritional value is the largest proportion of fiber.The edible part is mainly leaves,and the cooking method is mainly frying.The edible plant resources on the mountaintop platform of Tianmenshan are rich in species,diverse in cooking methods,and high in nutritional value. Reference | Related Articles | Metrics | Comments（0）

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Synthesis of Dimethyl Carbonate by Electroreduction of Carbon Dioxide in Acetonitrile on Graphene-Silver Electrode KUANG Yongbin, YU Xi, YANG Miao, FENG Qiuju Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 69-74.   DOI: 10.13438/j.cnki.jdzk.2023.04.008 Abstract （259）      PDF（pc） （10274KB）（121）       Knowledge map    Save In this paper,the improved Hummers method was used to prepare graphene oxide (GO).Electrochemical deposition method was used to deposit graphene and silver on conductive glass at room temperature and pressure to prepare graphene-silver composites.Dimethyl carbonate (DMC) was synthesized by electrochemical reduction of carbon dioxide combined with methanol (CH3OH) and iodide methane (CH3I) in acetonitrile solution with graphene-silver electrode as cathode.On this basis,the effects of different GO volumes,dispersant types and concentrations on the morphology of graphene-silver composites were discussed,and the effects of different electrolytic time on the DMC yield were also discussed.The results showed that the graphene-silver composites had good morphology when the GO volume was 10 mL,dispersant was PVP and dispersant concentration was 0.5 mol/L.When the electrolytic potential was -2.0 V,the temperature was 25 ℃,the supporting salt concentration was 0.1 mol/L,and the electrolytic time was 10 h,the yield of DMC was 36.8%,which was the best experimental conditions. Reference | Related Articles | Metrics | Comments（0）

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Multi-Attribute Group Decision Making Algorithm of Weighted Hesitant Fuzzy Set and Its Application ZHU Guocheng Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 9-18.   DOI: 10.13438/j.cnki.jdzk.2023.04.002 Abstract （253）      PDF（pc） （436KB）（152）       Knowledge map    Save In order to describe the multi-attribute group decision information of hesitant fuzzy set more comprehensively,the weighted hesitant fuzzy set is defined by adding the associated comprehensive weight of decision expert to the membership degree of hesitant fuzzy set.On the basis of using weighted hesitant fuzzy set to describe decision information,two algorithms for sorting alternative solutions based on single attribute view are established.Finally,the feasibility of the two algorithms are verified by a concrete case.The results show that the two algorithms are easy to operate and calculate,and can be converted into each other. Reference | Related Articles | Metrics | Comments（0）

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A Survey on Employment of Statistics Graduates from Universities in Western Regions CHEN Wangxue, PAN Hao Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 87-90.   DOI: 10.13438/j.cnki.jdzk.2023.03.013 Abstract （247）      PDF（pc） （830KB）（142）       Knowledge map    Save Taking the employment data of statistics graduates of Jishou University from 2015 to 2019 as a case,this paper analyzes the employment of graduates from three aspects of employment industry,employment position and employment region.The results indicate that the employment situation for statistics graduates is optimistic,characterized by multiple choices in employment industries and strong professionalism in employment positions.Based on the current employment status,some suggestions are put forward to improve the employment competitiveness of statistics graduates. Reference | Related Articles | Metrics | Comments（0）

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Analysis of Mechanical Properties of Cast-in-Place Prestressed Concrete Curved Box Girder WANG Jianxing, WANG Xinjie Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 39-46.   DOI: 10.13438/j.cnki.jdzk.2023.04.005 Abstract （245）      PDF（pc） （2747KB）（128）       Knowledge map    Save To analyse the mechanical properties of cast-in-place prestressed concrete curvilinear box girder under load,this paper took the actual project as the background,with the establishment of finite element model of curvilinear box girders,analyzed the mechanical characteristics and deformation law of the structure under different loads,and summarized the corresponding characteristics.Through the finite element analysis of the cast-in-place prestressed concrete curved box girder,the results show that there is a big difference between the arc lengths of the inner and outer sides of curved box girder,and the stress of the inner and outer sides of the same section of box girder is different;the stress produced when the same load is applied to the outer side is greater than that produced when it is applied to the inner side;under the vertical normal load of curved box girder,the longitudinal stress of mid-span section is less than that of side-span section;the vertical bending of the bridge is accompanied by the transverse torque,but the vertical bending value is far greater than the transverse torque value. Reference | Related Articles | Metrics | Comments（0）

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Research on the Effect Evaluation of Integrating Revolutionary Culture into Tourism Management Graduate Education based on Entropy-Fuzzy Comprehensive Evaluation Method WANG Zhaofeng, WU Yinfeng Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 83-90.   DOI: 10.13438/j.cnki.jdzk.2023.04.010 Abstract （244）      PDF（pc） （700KB）（157）       Knowledge map    Save Taking tourism management graduate students of colleges and universities as the research object,this research uses entropy method and fuzzy comprehensive evaluation method to evaluate the effect of integrating revolutionary culture into tourism management graduate education.The results showed that 25.89% of the teachers and students think the effect  is very good,41.92% of the teachers and students think the effect is good,32.19% of the teachers and students think the effect is not good.Therefore,to improve  the effect of integrating revolutionary culture into tourism management graduate education,it is necessary to optimize the tourism management graduate student education program,incorporate revolutionary culture into coursebook,class,and ideology,innovate and optimizate tourism management graduate student education content and form,and promote  the "three whole education" system.At the same time,it is necessary to strengthen the construction of tourism management disciplines and professional teachers to promote the high-quality development of tourism management personnel training. Reference | Related Articles | Metrics | Comments（0）

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Lattice Boltzmann Numerical Method for the Extended Fisher-Kolmogorov Equation FENG Yingxin, DAI Houping, WANG Chen, WEI Xuedan Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 19-30.   DOI: 10.13438/j.cnki.jdzk.2023.04.003 Abstract （238）      PDF（pc） （2738KB）（183）       Knowledge map    Save A new numerical format for solving the extended Fisher-Kolmogorov (EFK) equation is constructed based on the lattice Boltzmann method.The Taylor expansion and Chapman-Enskog multiscale expansion techniques are used to obtain the local equilibrium state distribution functions and correction functions of the lattice Boltzmann model for the one-and two-dimensional EFK equations,and to further recover the corresponding macroscopic equations.On this basis,stability conditions for the iterative format of the model are derived,and the model is used to solve the initial marginal value problem of the EFK equation. Reference | Related Articles | Metrics | Comments（0）

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Estimations of a Ros Deficit GUO Ruyi, MEI Jingfang Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 8-12.   DOI: 10.13438/j.cnki.jdzk.2023.03.002 Abstract （237）      PDF（pc） （279KB）（166）       Knowledge map    Save The upper and lower bounds of a Ros deficit are obtained with the geometric quantities such as the area of the involute line and Wigner caustics of the plane strictly closed convex curve  Γ. Reference | Related Articles | Metrics | Comments（0）

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D-N Alternating Method Based on the Curved Edge Finite Element for Anisotropic Exterior Problems in a Concave Angle TU Mingyue Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 31-38.   DOI: 10.13438/j.cnki.jdzk.2023.04.004 Abstract （225）      PDF（pc） （374KB）（171）       Knowledge map    Save Based on the natural boundary element theory of curved edge finite element,a D-N alternating method with curved edge finite element is established to solve anisotropic elliptic exterior problem in the infinite domain with a concave angle,and to give the error estimation and convergence of the approximate solution of the D-N alternating method. Reference | Related Articles | Metrics | Comments（0）

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Stability of Three-Dimensional Cracked Slopes Reinforced by Anti-Slip Piles SHENG Yan, LI Jia Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 47-54.   DOI: 10.13438/j.cnki.jdzk.2023.04.006 Abstract （225）      PDF（pc） （1272KB）（111）       Knowledge map    Save Cracks are a common disease affecting slope stability,in engineering,anti-slip piles are often used to reinforce the slopes for improvement of the stability of cracked slopes.A three-dimensional cracked slope rotational failure mechanism with anti-slip pile reinforcement is constructed in this paper,and the power expression of anti-slip pile lateral resistance is derived based on the assumption of the plastic state of soil between piles,and the safety factor of three-dimensional cracked slopes with different reinforcement locations and reinforcement density of anti-slip piles is calculated.Parametric studies imply that the anti-slip pile reinforcement measures can effectively reduce the maximum depth of cracks and significantly improves the stability of the slope.There is a significant negative correlation between the safety coefficient of cracked slopes and the maximum depth of cracks,which can be used as an effective indicator to determine the sensitivity of slopes to natural cracks.As the position of anti-slip piles moves from the slope toe to the slope crest,the safety factor of slopes first increases and then decreases,showing a significant unimodal behavior. Reference | Related Articles | Metrics | Comments（0）

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Construction and Properties of Two-Level Optimal Column Augmented Designs ZHANG Shixian, TIAN Jiezhong, BAI Qiming, LI Hongyi Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 1-7.   DOI: 10.13438/j.cnki.jdzk.2023.03.001 Abstract （220）      PDF（pc） （334KB）（138）       Knowledge map    Save In order to construct augmented designs more flexibly,the author uses a method without computer search which begins with an initial design with less number of columns and transforms by some rules to construct two-level optimal column augmented designs.In addition,the relationship between the column augmented designs and their initial designs is discussed under the E(s) criterion,the generalized minimum aberration criterion and the minimum moment aberration criterion. Reference | Related Articles | Metrics | Comments（0）

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Resistance to Kiwifruit Bacterial Canker and Its Correlation with Sugar Content in Branches of Kiwifruit Varieties GAO Jianyou, KUANG Meimei, LUO Qin, TAN Zecheng, CUI Lihong, ZHA Manrong, LIU Shibiao Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 66-72.   DOI: 10.13438/j.cnki.jdzk.2023.03.010 Abstract （209）      PDF（pc） （909KB）（117）       Knowledge map    Save In the present experiment,the resistance identification and evaluation of total 13 kiwifruit cultivars in Actinidia chinensis and A. chinensis var. deliciosa to Pseudomonas syringae pv. actinidiae (Psa) was conducted indoors by using wounding method on detached branches.The results showed that the incidence rate,onset time and lesion length of the isolated branches in all tested materials were significantly different after pathogenic bacteria inoculation.The order of resistance of the above cultivars was listed as follows:Miliang-1＞Miliang-2＞Chuhong＞Cuiyu＞Beimu＞Xiangbiyu＞Xiangji＞Xiangjihong＞Wuzhi-3＞Jinyan＞Donghong＞Guichang＞Hongyang,according to the disease lesion length from small to large,at the 25 d after infected Psa.A. chinensis var. deliciosa Miliang-1 was evaluated as the high resistance (HR) cultivar and A. chinensis Hongyang as the high susceptibility (HS) cultivar.The content of soluble sugar in branches decreased significantly after infected Psa,and the higher of the soluble sugar content after infection,the stronger resistance the cultivar had.However,no correlation was observed between the Psa resistance and reducing sugar content,lenticels characters and cortex thickness,respectively. Reference | Related Articles | Metrics | Comments（0）

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Experimental Study on Flexural Behavior of Finger-Jointed Timber Beams Strengthened with CFRP Sheets WANG Jianxing, JIA Yumeng, XUE Meihui Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 39-45.   DOI: 10.13438/j.cnki.jdzk.2023.03.006 Abstract （204）      PDF（pc） （2171KB）（114）       Knowledge map    Save In order to improve the flexural strength of finger-jointed timber beams,three groups of timber beams were designed and manufactured.Through four-point compression test,the flexural performance of solid timber beams,finger-jointed timber beams and CFRP reinforced finger-joint beams were compared,and the influence of finger-jointed joints on the fracture mode of timber beams was analyzed.The displacement load curve of finger-jointed timber beams and the displacement load curve of finger-jointed timber beams were obtained,and the corresponding distinction was given for the failure characteristics of each type.Therefore,the feasibility of using CFRP to reinforce finger-joint is proposed.The test results show that the appearance of finger-joint has obvious influence on the bending failure process of timber.The appearance of finger-joint makes the fracture mode of timber change from ductile fracture to brittle fracture,and the flexural strength of finger-joint timber beam is significantly improved by using CFRP cloth reinforcement. Reference | Related Articles | Metrics | Comments（0）

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Secure Top-k Query Scheme with Strong Privacy Protection in Cloud Computing Environment CUI Shaogang, YIN Hui, ZHOU Chunguang Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 13-28.   DOI: 10.13438/j.cnki.jdzk.2023.03.003 Abstract （203）      PDF（pc） （1800KB）（96）       Knowledge map    Save In a multi-user application scenario,the cloud can collude with a data owner or a data user to infer an authorized user's query contents.In this paper,we first present the collusion attack model in cloud environments and implement an efficient and strongly privacy protective search scheme.This scheme employs dynamical and secure searchable index construction which not only guarantees the data confidentiality but also extremely fits into the multi-user cloud computing environments where data files are dynamically uploaded frequently,enhancing the availability and scalability of the whole system greatly as well.In addition,in order to satisfy users' individual search requirements,our scheme supports secure relevance ranking for query results according to keyword weight,thus implementing secure top-k query. Reference | Related Articles | Metrics | Comments（0）

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Comparative Choices for Enterprise Data Usage Rights Protection DENG Shuyuan Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 80-86.   DOI: 10.13438/j.cnki.jdzk.2023.03.012 Abstract （200）      PDF（pc） （476KB）（85）       Knowledge map    Save Circulation and sharing of data helps promote the prosperity of the digital economy market,and gives enterprises the rights to use data in line with economic development.The key to realizing the value of data lies in the collection,use and sharing of data,and enterprises will turn the information data held by individuals into data with market transaction value after reprocessing and processing such as desensitization.In the "individual-enterprise" data binary structure,in order to avoid the deadlock of the protection mechanism for use and sharing of data,the dispute over data ownership should be temporarily shelved and a data use and sharing mechanism should be established for enterprises.The foothold of the mechanism will be shifted from the perspective of personal interests to the perspective of social interests,and the rational use system of data and the data access system will be clarified,so as to promote the free circulation and full sharing of data and maximize the value of data. Reference | Related Articles | Metrics | Comments（0）

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Pollution Characteristics and Pollution Sources Analysis of SO2,O3 and NO2 in Hefei High-Tech Zone ZHENG Nina, XU Yaqi, PAN Lingyang Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 54-60.   DOI: 10.13438/j.cnki.jdzk.2023.03.008 Abstract （194）      PDF（pc） （4478KB）（102）       Knowledge map    Save In this paper,the atmospheric SO2,O3 and NO2 of Hefei High-tech Zone are continuously observed using long-path differential absorption spectroscopy system,and the characteristics of gas pollution and possible pollution sources are analyzed.The diurnal variation shows that SO2 is high at night and low during the day.The diurnal variation of NO2 shows a single peak and single valley type.The rush hour of off-duty traffic has certain effect on NO2.But the whole day concentration of NO2 is on the high side (35~45 μg/m) and the variation is small,so there exist  other important nitrogen oxide emission sources.The diurnal variation of O3 is obvious.Its daytime concentration is high,and the maximum value appears at 16:00 in the afternoon;the concentration is low at night,and the lowest value appears on the early morning.The concentration of NO2 and SO2 in winter is high because of low atmospheric boundary layer.In summer,photolysis reaction is intense,wet deposition is obvious,so the concentration of pollutants is low.On the contrary,the seasonal variation of O3 is contrary.The analysis of pollution sources shows that the high SO2 value is mainly related to the coal burning of rural residents in the northwest of the observation site and the unorganized emission of pharmaceutical companies and paint factories in the southeast of the observation site.However,the high value of NO2 in the east-northeast (wind speed > 6 m/s) wind direction is affected by the long-distance transmission from Hefei Wanneng Power Plant and vehicle exhaust emissions in busy urban areas.The wind speed and direction distribution of O3 and NO2are basically opposite.The correlation coefficient of NO2 and O3 is only -0.429 6.There are other important O3 precursor pollutants in the atmosphere of Hefei Hi-tech Zone. Reference | Related Articles | Metrics | Comments（0）

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Identification  of Cellulose Degrading Bacteria in Namco Yak Dung and Its Enzyme Production Characteristics LI Qiang, LUO Jin, YANG Jianing, GAO Hongtao, LIU Xuan, HE Jianwu Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 61-65.   DOI: 10.13438/j.cnki.jdzk.2023.03.009 Abstract （187）      PDF（pc） （2328KB）（110）       Knowledge map    Save Through enrichment and purification,high efficient cellulose degrading strains were screened from yak dung in Namco Lake,Tibet.The enzyme production characteristics of cellulose degrading strains under different conditions were determined,and the genetic differences of the target strains were analyzed.The results showed that strain X1 and X2 had significant cellulose degradation advantage,and the relative enzyme activities of the two strains were strong at pH 4 and 9 ℃.Phylogenetic analysis showed that X1 and X2 might belong to the genus Cronobacter. Reference | Related Articles | Metrics | Comments（0）

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Multi-Channel Cooperative Routing Cross-Layer Control System of Communication Network Based on IPv6 LI Miao Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 35-41.   DOI: 10.13438/j.cnki.jdzk.2023.05.005 Abstract （170）      PDF（pc） （949KB）（95）       Knowledge map    Save A multi-channel collaborative routing cross layer control system (referred to as the cross layer control system) for power communication networks based on IPv6 is designed to address issues such as transmission delay and channel collision caused by limited IP allocation.The hardware part of the system uses IPv6 technology to establish a communication protocol stack,and uses communication network collaboration routing to achieve cross layer control of devices such as databases,processors,and controllers in the system.The software uses the information generated by the protocol stack to build a routing control system,and uses multiple ant colony optimization algorithms to find the optimal communication path for multi-channel cooperation in the power communication network,achieving cross layer control of multi-channel cooperation routing in the power communication network.Selecting information transmission delay,channel node collision rate,and throughput as evaluation criteria,a comparative experiment was conducted between the multiple ant colony cross layer control algorithm,ant colony algorithm,and Newton algorithm.The results showed that the delay of the multiple ant colony cross layer control algorithm was maintained at around 0.03 seconds.When the number of tasks was less than 100,there was no node collision phenomenon,and the throughput was higher than 520 MB/s.This indicates that the cross layer control system has better routing cross layer control effect. Reference | Related Articles | Metrics | Comments（0）

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Effects of Different Treatment on Seed Germination of Endangered Species Terminalia myriocapra YU Xiao, ZHAO Zhenning, DENG Lilan Journal of Jishou University(Natural Sciences Edition)    2023, 44 (3): 73-79.   DOI: 10.13438/j.cnki.jdzk.2023.03.011 Abstract （168）      PDF（pc） （1141KB）（81）       Knowledge map    Save In this study,the effects of different exogenous hormones (GA3,NAA) and culture temperature on germination of the seeds were studied after hibernation treatment and indoor temperature presermation.The results showed that the type and concentration of growth regulator had significant effects (P<0.01),but the preservation method and culture temperature had no significant effects on the germination rate of seeds (P>0.05).The degree of influence was the type of growth regulator,the concentration of growth regulator,culture temperature and preservation method in descending order.After the seeds were treated with the same mass concentration of GA3 and NAA growth regulator,the germination rate of seeds was successively from high to low in variable temperature culture in hibernation treatment,constant temperature culture in hibernation treatment,constant temperature culture under normal temperature preservation,and constant temperature culture under normal temperature preservation.The optimal conditions for seed germination were treated at 4 ℃ for 30 days after seed collection,impregnated with 40 mg/L GA3 and cultured at 15~25 ℃ in a light incubator. Reference | Related Articles | Metrics | Comments（0）

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Existence of Positive Solutions to Two-Point Boundary Value Problems of Fractional Differentional Equations Involving Caputo-Fabrizio Fractional Derivatives WANG Lanfang Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 1-5.   DOI: 10.13438/j.cnki.jdzk.2023.05.001 Abstract （151）      PDF（pc） （279KB）（127）       Knowledge map    Save Based on the Krasnoselskii fixed point theorem，existence of positive solutions to two-point boundary value problems for fractional differential equations involving the Caputo-Fabrizio derivative is discussed，and some sufficient conditions are established to ensure the existence of at least one positive solutions to the boundary problem. Reference | Related Articles | Metrics | Comments（0）

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Named Entity Recognition of Diabetes Online Health Community Based on BERT Model LIANG Yujin, FU Chuanshan, CHEN Jinsong, CHEN Ming, ZHOU Yue, XU Qian Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 28-34.   DOI: 10.13438/j.cnki.jdzk.2023.05.004 Abstract （145）      PDF（pc） （840KB）（102）       Knowledge map    Save To address the issues of heterogeneous content,high complexity,and inability to recognize contextual semantics in diabetic patient-patient online health communities,the BERT-embedded BiLSTM-CRF model is used to recognize six types of entities from the text of the diabetic community "Sweet Home":disease,clinical manifestation,medicine,test,body parts,and emotion.The results demonstrate that the model achieved an accuracy rate of 90.8%,a recall rate of 76%,and a F1 value of 82.8%.The BERT-BiLSTM-CRF model has been shown to be useful for recognition and to serve as a benchmark for more personalized health information and services. Reference | Related Articles | Metrics | Comments（0）

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Research on Regional Sign Design for City Entrances：Design of Anren City Gate SONG Lixin, MA Ruoxuan, SHI Dan, SONG Zikun, XIE Juntao Journal of Jishou University(Natural Sciences Edition)    2023, 44 (4): 75-82.   DOI: 10.13438/j.cnki.jdzk.2023.04.009 Abstract （143）      PDF（pc） （5229KB）（68）       Knowledge map    Save With the semiotic principles,this paper proposes a new way of regional sign design to reduce the difficulty in understanding signs and show uniqueness.Based on the survey of regional cultural symbols,the symbols are summarised into common,easily recognisable and simple draft figures.Familiar figures are derived into new signs with regional cultural characteristics and unique elements.Finally,with theoretical exploration,the research enjoys a practical design exploration of the Anren city gate and project implementation. Reference | Related Articles | Metrics | Comments（0）

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Mechanical Properties and Stability of Single-Layer Reticulated Shell with Holes WANG Jianxing, LIU Ge, ZHANG Pengyu, ZHANG Zhaowei Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 57-63.   DOI: 10.13438/j.cnki.jdzk.2023.05.008 Abstract （140）      PDF（pc） （8636KB）（72）       Knowledge map    Save Taking the reticulated shell structure node as the main research object,the numerical model of the main reticulated shell structure of the dry coal shed of the power plant is constructed,the buckling mode of the perforated reticulated shell structure is studied,and the nonlinear buckling analysis is carried out to explore the static characteristics under vertical load and wind load.It is found that the stress concentration occurs at the opening of the reticulated shell.The maximum stress of the joint under the vertical load is 0.037 kPa,and the maximum stress of the joint under the wind load is 0.024 kPa.The maximum displacement of the node under the vertical load is 0.881 mm,and the maximum displacement of the node under the wind load is 1.692 mm,which is 69.34% and 19.57% higher than the average displacement of the node of the whole reticulated shell structure,respectively,which meets the requirements of the code.In the eigenvalue buckling analysis,some members of the rigid joint reticulated shell structure are deformed,which has a certain influence on the structural safety.After the re-optimization design of the reticulated shell,some joints adopt hinged joints,and the eigenvalue buckling load is 4.12% higher than that of pure rigid joints,which effectively improves the stability of the reticulated shell structure. Reference | Related Articles | Metrics | Comments（0）

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Intelligent Weighing and Pricing System Design with User Recognition Based on RFID HE Renwang, ZHU Xiaojun, SUN Jie, LU Yingjian, QIN Junlong Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 42-47.   DOI: 10.13438/j.cnki.jdzk.2023.05.006 Abstract （139）      PDF（pc） （3292KB）（85）       Knowledge map    Save Aiming to address the issues of high cost,slow speed,inability to recognize users,manual assistance,and lack of intelligence in existing intelligent weighing systems,we have designed and implemented a smart weighing and pricing system based on Radio-Frequency Identification (RFID) technology.This system can identify users by reading their unique RFID tags.It utilizes an HX711 module to sense the weight and transmit the data to an STM32 control module.The STM32,in turn,writes the weight information back to the RFID tags using an RFID card reader.The shopping information stored in the RFID tags is then read by the upper computer,which completes the pricing and printing process.Throughout this entire process,no human intervention is required for weighing and pricing to be accomplished.Experimental results demonstrate that the system can accurately identify users and can efficiently perform intelligent weighing and pricing tasks. Reference | Related Articles | Metrics | Comments（0）

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Dynamic Analysis of a Delayed Epidemic Model Affected by Disease Awareness GUO Hongli, XIE Jingli, ZHANG Meiyang Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 6-17.   DOI: 10.13438/j.cnki.jdzk.2023.05.002 Abstract （139）      PDF（pc） （3861KB）（78）       Knowledge map    Save An SEIM delayed epidemic model affected by disease awareness and incubation period is established,the basic regeneration number  of the model is given,and the existence and stability of the disease-free equilibrium point and the endemic equilibrium point of the model are analyzed.The results show that the Hopf bifurcation occurs in the model at the corresponding critical value τ0 generated by the incubation period,and the stable state of the two equilibrium points changes.When τ is fixed,with the increase of media coverage,the stronger the awareness of disease among susceptible people and the smaller the number of infected people,the easier it is to control the disease. Reference | Related Articles | Metrics | Comments（0）

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Spatial Distribution Characteristics of the Scenic-Reliant Rural Guest Houses and the Influencing Factors：A Case Study of the Three Tourist  Villages in Wulingyuan District XIE Wenhai, YU Zhuoxuan, XU Yiqi, ZHANG Xuan, PENG Junrui, WU Jilin Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 77-84.   DOI: 10.13438/j.cnki.jdzk.2023.05.011 Abstract （131）      PDF（pc） （1873KB）（89）       Knowledge map    Save Three representative scenic-reliant villages  in Wulingyuan District were selected as the research samples,and the method of Participatory Rural Appraisal combined with GIS spatial analysis was used to study the spatial distribution characteristics of the guest houses and the influencing factors in the study area.The results indicate that the spatial distribution of the guest houses forms a clustering pattern,which differs significantly from the random distribution pattern and has varying degrees of clustering.The spatial distribution of guest houses forms a hierarchical agglomeration pattern,presenting a spatial form of multi center distribution.The guest houses are mainly located in scenic areas with abundant tourism resources and near the main roads in the village.There are diverse influencing factors for the spatial distribution of the guest houses.Tourism resources,transportation conditions,product orientation and policy support are important for the location and spatial distribution of rural guest houses. Reference | Related Articles | Metrics | Comments（0）

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Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 18-27.   DOI: 10.13438/j.cnki.jdzk.2023.05.003 Abstract （128）      PDF（pc） （449KB）（74）       Knowledge map    Save Reference | Related Articles | Metrics | Comments（0）

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Key Genes for Polysaccharide Synthesis Pathway from Polygonatum Based on WGCNA WANG Rong, MENG Ran, CHEN Xuemei, MENG Ying Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 64-71.   DOI: 10.13438/j.cnki.jdzk.2023.05.009 Abstract （118）      PDF（pc） （6658KB）（69）       Knowledge map    Save In order to find possible key genes related to the synthesis of polysaccharides in Polygonatum,this study explored the correlation between the expression patterns of core genes in leaves and rhizomes of Polygonatum cyrtonema Hua and Polygonatum odoratum (Mill.) Druce in combination with polysaccharide synthesis pathways from KEGG database using transcriptome data with expression difference and weighted gene co-expression network analysis (WGCNA).Our results indicated that FBA (fructose-bisphosphate aldolase) and GOLS (galactinol synthase) showed a strong correlation in Pearson linear regression calculation,which demonstrated that they are possible key genes for polysaccharide synthesis pathway in Polygonatum. Reference | Related Articles | Metrics | Comments（0）

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Manipulation of the Band Structure of Weyl Semimetals by Electric and Magnetic Fields LUO Shuzhen, LIAO Wenhu, BAO Hairui Journal of Jishou University(Natural Sciences Edition)    2023, 44 (6): 80-89.   DOI: 10.13438/j.cnki.jdzk.2023.06.013 Abstract （115）      PDF（pc） （3303KB）（137）       Knowledge map    Save Based on the low-energy effective hamiltonian model under the tight-binding approximation,the modulation of the electronic band structure of weyl semimetals by applied electric and/or magnetic fields is investigated.The results show that:when only the positive (negative) electric field is applied,the weyl points of system gradually move towards the boundary (center) of the brillouin zone with the increasing of the electric field strength,and when the electric field strength increases to a certain extent,the semimetal-semiconductor (insulator) transition can be relieazed;when only the magnetic field is applied,the weyl semimetal can form the discrete landau levels,the n=0 subband does not change with the increasing of magnetic length while the n≠0 subband gradually approaches the fermi level with the increasing of magnetic length,and the band gap between the conduction and valence bands with same indices gradually decrease;when the magnetic length remains unchanged,the weyl points of system gradually move towards the boundary (center) of the brillouin zone with the increasing of the positive (negative) electric field strength.Under the appropriate electric field,the n=0 subband can change from partially occupied valence band to first conduction band (fully occupied first valence band) and realize the semimetal-semiconductor or semimetal-insulator transitions. Reference | Related Articles | Metrics | Comments（0）

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Community Detection Algorithm for Bipartite Networks Based on Spectral Clustering LIU Chenchen, XU Ying Journal of Jishou University(Natural Sciences Edition)    2023, 44 (6): 9-13.   DOI: 10.13438/j.cnki.jdzk.2023.06.002 Abstract （111）      PDF（pc） （676KB）（130）       Knowledge map    Save In order to solve the problem of low precision and original network information lose in community detection of bipartite network,a new spectral clustering algorithm named SVD-MS is proposed.This method maps Barber's problem of maximizing the module size of bipartite networks to the problem of singular value vector decomposition,and combines heuristic algorithms to quickly solve vector partitioning problems.Experimental results show that,the SVD-MS algorithm can effectively partition the community structure of bipartite networks and preserve the original network information. Reference | Related Articles | Metrics | Comments（0）

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Synthesis of Perylene Amide Alcohol Ester Under Microwave Irradiation LIU Limin, SHI Jianjun, LIU Yang Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 72-76.   DOI: 10.13438/j.cnki.jdzk.2023.05.010 Abstract （111）      PDF（pc） （626KB）（57）       Knowledge map    Save N-propyl-3,4,9,10-perylene terephthalic-3,4-alcohol ester-9,10-bisimide was synthesized under ultrasonic microwave radiation with N-propyl-3,4,9,10-perylene terephthalic acid and alkyl halide,aliphatic alcohol as solvent.Results showed  that this reaction afforded corresponding compound with 65.7% yields.The optimized reaction condition was as follows:700 W of microwave power,60 min of reaction time,90℃of reaction temperature,and 80% of ultrasonic power. Reference | Related Articles | Metrics | Comments（0）

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Impact of Mentor's Supporting Leadership on Graduate Research Innovation Ability:A Chain Mediating Model PENG Liping Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 85-89.   DOI: 10.13438/j.cnki.jdzk.2023.05.012 Abstract （109）      PDF（pc） （457KB）（57）       Knowledge map    Save To explore the influence of mentor's supporting leadership on graduate research innovation ability,the mediation effect of emotional intelligence and academic stress is investigated.Structural equation model analysis of 926 samples from college graduates in Hunan reveal that mentor's supporting leadership has a significant positive predictive effect on graduate research innovation ability;emotional intelligence and academic stress play a separate partial mediating role and a chained mediating role between mentor's supporting leadership and graduate research innovation ability. Reference | Related Articles | Metrics | Comments（0）

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Optimal Slip Ratio Identification Estimator Design Based on μ-S Model WANG Bo, DING Fang, LIU Mingyan, TIAN Miaofa Journal of Jishou University(Natural Sciences Edition)    2023, 44 (5): 48-56.   DOI: 10.13438/j.cnki.jdzk.2023.05.007 Abstract （106）      PDF（pc） （1442KB）（78）       Knowledge map    Save In order to achieve optimal control of the automotive anti-lock controller based on slip ratio identification,an optimal slip ratio identification estimator is designed based on the Kiencke μ-S model using an improved forgetting factor recursive least squares algorithm,and the estimation results of the identification estimator regarding the optimal slip ratio and peak adhesion coefficient are compared with those under the Burckhardt μ-S model.The discriminative estimator is applied to the fuzzy sliding mode controller of the automotive anti-lock braking system,and simulation experiments are conducted under single pavement and variational pavement conditions.The experimental results show that the discriminative estimator has small errors and delays,and the anti-lock controller based on the optimal slip ratio identification can achieve online identification and fast tracking of the optimal slip ratio and effectively improve the braking efficiency. Reference | Related Articles | Metrics | Comments（0）

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Research Progress of Structure and Function of Nuclear Transcription Factor Relish ZHANG Hong, LIU Qingzhen Journal of Jishou University(Natural Sciences Edition)    2024, 45 (1): 77-83.   DOI: 10.13438/j.cnki.jdzk.2024.01.013 Abstract （105）      PDF（pc） （470KB）（140）       Knowledge map    Save The nuclear transcription factor Relish is a member of the NF-κbs superfamily functioning as an important immune signaling effector.Relish contains a conserved Rel homologue domain at the N-terminal and an ankyrin repeat domain at the C-terminal.Relish is actived in response to certain external stimulations transmitted by the Imd pathway,via phosphorylation,cleavage and other posttranslational modification of Relish.Activated Relish then translocates to nuclear and binds to DNA to regulate the expression of target genes,helping organisms to adapt to various physiological environments and stimuli,resisting the invasion and infection of foreign pathogens.The paper provides an brief review of the structure and function of Relish.The structural features of Relish include Rel homology domain,ankyrin repeats domain,nuclear localization sequence,caspase target site,serine-rich regions,and proline-glutamate-serine-rich domain.Functions of Relish mainly involve participating in innate immunity,regulating neural development and lifespan,regulating intestinal homeostasis and morphology,participating in stress regulation and other physiological activities. Reference | Related Articles | Metrics | Comments（0）