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Ultrasound Visualized Stellate Ganglion Block Combined with Acupoint Catgut Implantation for the Treatment of Intractable Insomnia ZHANG Jiancheng, ZHOU Tenghao, ZHENG Hao Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 77-81.   DOI: 10.13438/j.cnki.jdzk.2025.05.011 Abstract （841）      PDF（pc） （587KB）（500）       Knowledge map    Save To explore the clinical effect of ultrasound-guided stellate ganglion block combined with acupoint catgut implantation therapy in the treatment of intractable insomnia,60 patients with intractable insomnia who visited Shenzhen Pingle Orthopedic Hospital from January 1,2022 to December 31,2023 were selected as the research objects and randomly divided into the control group and the treatment group,with 30 cases in each group.The control group was treated with acupuncture,while the treatment group was treated with ultrasound-guided stellate ganglion block combined with acupoint catgut implantation therapy.The treatment course for both groups was 10 days.The effective rate and pittsburgh sleep quality index (PSQI) scores of the patients before and after treatment were analyzed.The results showed that the number of cases with complete recovery and marked improvement in the treatment group was significantly higher than that in the control group;the number of cases with no improvement in the treatment group was significantly lower than that in the control group;the effective rate of the treatment group was significantly higher than that of the control group;compared with the control group after treatment and the treatment group before treatment,the scores of 7 factors (sleep quality,sleep latency,sleep duration,sleep efficiency,sleep disturbance,use of hypnotic drugs,and daytime dysfunction) and PSQI scores of the treatment group after treatment were significantly decreased.This indicates that ultrasound-guided stellate ganglion block combined with acupoint catgut implantation therapy is an effective method that can significantly prolong sleep duration and improve sleep quality. Reference | Related Articles | Metrics | Comments（0）

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Study on the Effect and Mechanism of Semen Raphani Oil in the Treatment of Chilblains LEI Yan, JIN Shuo, DI Kaiyin, LIU Yuhui, YANG Ting, XIAO Ya, XU Da, WU Guanghui Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 59-68.   DOI: 10.13438/j.cnki.jdzk.2025.05.009 Abstract （592）      PDF（pc） （13988KB）（148）       Knowledge map    Save To investigate the anti-chilblain effect and mechanism of Semen Raphani oil,a mouse chilblains model was established to observe the effects of Semen Raphani oil on paw swelling rate,pain threshold,and pathological changes in chilblained tissues.Network pharmacology was used to explore the anti-chilblain components,targets,and signaling pathways of Semen Raphani oil.Animal experiments showed that Semen Raphani oil significantly alleviated paw swelling,increased the pain threshold in chilblained mice,relieved skin edema,and reduced the number of mast cells in chilblained tissues.Network pharmacology predictions indicate that Semen Raphani oil may interact with 38 potential targets in the treatment of chilblains.The core targets include MAOB,HSP90AB1,PTGS2,PTGS1,ACTB,MYC,PGR,NCOA2,RELA,and RXRA.The primary signaling pathways involved are neuroactive ligand signaling,chemical carcinogenesis-receptor activation,human cytomegalovirus infection,and the phosphatidylinositol-3-kinase-protein kinase B (PI3K-Akt) pathway.Key biological functions associated with these targets include smooth muscle contraction,xenobiotic stimulus response,and thermogenesis. Reference | Related Articles | Metrics | Comments（0）

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Finite-Time Synchronization of Discontinuous Inertial Neural Networks Based on Event-Triggered Mechanism  ZENG Zhiyuan, DAI Houping, CHEN Teng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 19-28.   DOI: 10.13438/j.cnki.jdzk.2025.05.004 Abstract （529）      PDF（pc） （737KB）（208）       Knowledge map    Save The finite-time event-triggered control problem of a class of time-delay inertial neural networks with discontinuous activation functions is studied.The second-order inertial neural network is transformed into the form of a first-order neural network through the variable substitution method.Based on the characteristics of discontinuous activation functions,the solution of the neural network is defined using the Filippov solution framework.A new event-triggered controller is designed in combination with the finite-time stability theory,and the trigger interval is restricted to avoid the Zeno phenomenon.On this basis,the discrimination criteria for the network to achieve finite-time synchronization are derived to ensure that this type of second-order inertial neural network achieves synchronization within a finite time. Reference | Related Articles | Metrics | Comments（0）

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New Planck Constant Measurement Experiment Based on Visibility Principle BAO Sha, LUO Jin, CHEN Qixuan, DAI Wenbin, WU Yunwen Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 42-46.   DOI: 10.13438/j.cnki.jdzk.2025.06.006 Abstract （528）      PDF（pc） （746KB）（152）       Knowledge map    Save Based on the Newton ring interference experiment and the photoelectric effect experiment,the model simulation and data analysis of the principle of light interference experiment were carried out with the help of Matlab software.On this basis,the relationship between the maximum frequency of incident light and the cut-off voltage of six types of colored glass combined with incandescent lamps to form incident light sources with different wavelength ranges was explored.A new method for measuring Planck's constant based on the principle of visibility was proposed.Firstly,natural light was filtered through colored glass to obtain a small band light source.Secondly,the frequency range of the incident light was determined by Newton's rings interference to obtain the maximum frequency.Then,the cut-off voltage was measured by the zero current method,and the relationship between the maximum frequency of the incident light and the cut-off voltage was analyzed.Finally,Planck's constant h was calculated to be approximately 6.198×10-34 J·s,with a relative error of 6.46%.This method can measure Planck's constant in a simple environment. Reference | Related Articles | Metrics | Comments（0）

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Watermarking Algorithm Against Rotation Attack Based on Multi-Transform Domain YU Shuaizhen, YIN Hongcai, XIE Daoping Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 29-36.   DOI: 10.13438/j.cnki.jdzk.2025.05.005 Abstract （523）      PDF（pc） （2792KB）（393）       Knowledge map    Save To enhance the ability of transform domain digital watermarking to resist rotation attacks,the article proposes a watermarking algorithm that fuses multiple domains to resist arbitrary rotation angle attacks.First,the host image is subjected to DWT transformation,then the low-frequency coefficients of the last level are subjected to SVD,and finally,based on the size of the watermark information an appropriate position in the singular value matrix is selected to embed the scrambled and encrypted watermark signal.The experimental results show that the algorithm has good watermark information hiding ability and can completely resist single rotation attacks ranging from 1°~360°.At the same time,it has strong robustness against combination attacks of image rotation attacks combined with cropping,JPEG compression and other attacks,and can effectively resist conventional signal processing. Reference | Related Articles | Metrics | Comments（0）

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Progress and Prospects of Bamboo Slips Digitization:A Preliminary Exploration of Digital-Intelligent Development of Liye Qin Slips FU Zhuosong, LIAO Bolin, LI Jianfeng, LONG Guangyu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 83-89.   DOI: 10.13438/j.cnki.jdzk.2025.06.011 Abstract （509）      PDF（pc） （702KB）（868）       Knowledge map    Save The development of digital-intelligent technologies for bamboo slip processing has led to systematic advances in key methods such as image enhancement,image segmentation,character recognition,and image restoration.These techniques have been summarized in terms of their application strategies and performance in handling bamboo slip images.In light of the archaeological context and preservation conditions for the Liye Qin slips,major challenges have been identified,including the lack of standardized protocols,low image quality,and difficulties in recognizing diverse character forms.A construction framework has been proposed,centered on standardized data modeling,intelligent image processing,in-depth character recognition,and damaged-text restoration.Furthermore,interdisciplinary collaboration among archaeology,computing,and paleography is recommended to build a sustainable and evolvable technological system for bamboo slip digitization,facilitating the refined organization and scholarly use of large-scale historical documentary resources. Reference | Related Articles | Metrics | Comments（0）

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Multipole Corner States and Edge States of the Orbital Kagome XIE Wenjie, WANG Xiaoyun, KONG Peng, DENG Ke Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 53-58.   DOI: 10.13438/j.cnki.jdzk.2025.05.008 Abstract （506）      PDF（pc） （5499KB）（161）       Knowledge map    Save To study the orbital topological states in phonon crystals,a special orbital Kagome lattice supporting p orbitals was constructed by connecting disc-shaped acoustic cavities with a pair of parallel coupling tubes,and the corner states of the Kagome lattice in the p orbital mode were explored.The results show that the lattice corner states are rich in both types and quantities,and are divided into type Ⅰ corner states and type Ⅱ corner states,with a total of 24.Type Ⅰ corner states are formed by the orbital interactions between the two outermost atoms.There are four types (Type Ⅰ σ -symmetric corner states,type Ⅰ σ-antisymmetric corner states,type Ⅰ π -symmetric corner states,and type Ⅰ π  -antisymmetric corner states).Type Ⅱ corner states are corner states that do not rely on long-range coupling.There are also four types,including type Ⅱ σ symmetric corner state,type Ⅱ σ antisymmetric corner state,Type Ⅱ π symmetric corner state and Type Ⅱ π antisymmetric corner state. Reference | Related Articles | Metrics | Comments（0）

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Development of Xiangxi Vine Tea Extract Lozenges NI Dexin, LIU Jiawang, YIN Guang, HUANG Hongjun, ZOU Jingyi, FENG Qiuju Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 82-89.   DOI: 10.13438/j.cnki.jdzk.2025.05.012 Abstract （477）      PDF（pc） （1647KB）（436）       Knowledge map    Save Taking the vine tea from Xiangxi as the experimental raw material,we have optimized the extraction process of vine tea by single-factor experiments.The antibacterial activity and antioxidant activity of the vine tea extract were analyzed.The ratio of excipients in the prescription was further optimized to develop a vine tea extract lozenge.The quality of the product was tested to determine whether it met the relevant tablet quality standards.The results showed that the optimal extraction conditions were a solid-liquid ratio of 1∶40 (g∶mL),an ethanol volume fraction of 70%,a reflux time of 90 min,and a crystallization temperature of 10 ℃.The vine tea extract had a good inhibitory effect on Escherichia coli,with the maximum inhibition zone diameter being 15.1 mm.The vine tea extract had good scavenging abilities for hydroxyl radicals,superoxide anion radicals,and DPPH radicals,and also had a good reducing ability.Its radical scavenging level was much higher than that of citric acid and close to that of ascorbic acid.The preparation of lozenges employed a mixture of excipients consisting of 0.50 g dextrin,2.2 g starch,0.50 g sucrose,and 0.002 4 g magnesium stearate.The disintegration time of the finished product was 15 min,and the hardness,friability,appearance,and weight variation of the tablets all met the tablet quality standards of the Chinese Pharmacopoeia. Reference | Related Articles | Metrics | Comments（0）

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Upper Bound Estimation of the Infinity Norm for the Inverse of Strict α1-Nekrasov Matrices YI Hong, MO Hongmin, HE Yongfang Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 15-23.   DOI: 10.13438/j.cnki.jdzk.2025.06.003 Abstract （472）      PDF（pc） （547KB）（154）       Knowledge map    Save A new class of non-singular H-matrices,strict α1-Nekrasov  matrices,is defined,and several methods for determining non-singular H-matrices are provided.By using the method of matrix splitting,combined with the estimation formula for the infinity norm of the inverse of  Nekrasov matrix and properties of inequalities,an upper bound estimation for the infinity norm of the inverse of strictly α1-Nekrasov  matrix is provided. Reference | Related Articles | Metrics | Comments（0）

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Characteristics of the Nesting Sites and Breeding Behaviors of Myophonus caeruleus in Western Hunan LIU Yi, WU Tao, XIONG Yixin, CHEN Tianyu, XUE Fengling, NING Luoyang, LIU Zhixiao Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 67-77.   DOI: 10.13438/j.cnki.jdzk.2026.01.010 Abstract （466）      PDF（pc） （3616KB）（231）       Knowledge map    Save Myophonus caeruleus is a medium-sized passerine bird of important ecological,scientific and social value,with unique cave-dwelling habits in Xiangxi Prefecture,Hunan Province.A combination of field investigation and portable automatic infrared video recording was employed to explore the main factors influencing the nest-site selection and characteristics of breeding behavior of this species.The major results are as follows:The main factors influencing the choice of nest sites of Myophonus caeruleus are spatial location and microclimatic environment.The nests are bowl-shaped,composed of four layers,and the dominant nest materials included mosses (50%),rhizomes (30%) and leaves (10%) of herbage and lianas.Both female and male birds participate in nesting,and the nesting behaviors primarily include nest-building (68.5%),nest-tidying (13.9%),warning (8.4%) and inspecting (5.7%).Incubation is mainly carried out by the female bird,and the behaviors during the incubation mainly include preening (38.5%),egg-turning (29.3%),nest-sitting (13.2%),inspecting (9.2%) and warning (5.4%).Both the male and female birds raise the chicks together,and the behaviors during the breeding chiefly covere nestling-feeding (38.9%),feces removal (15.8%),nestling-turning (11.6%),brooding (10.9%),preening  (9.3%),inspecting (5.3%),and warning (4.6%). Reference | Related Articles | Metrics | Comments（0）

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Survey on Bird Diversity in Hunan Gaowangjie National Nature Reserve TAN Yechen, HUANG Jie, MAO Jing, WANG Jing, XIONG Shuhong, ZHANG Youxiang, WU Tao, HUANG Xinglong, ZHANG Ziliang, KE Mingjun Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 90-100.   DOI: 10.13438/j.cnki.jdzk.2025.05.013 Abstract （455）      PDF（pc） （882KB）（1420）       Knowledge map    Save To understand the avian species diversity and distribution in the Gaowangjie National Nature Reserve in Hunan,a systematic survey of bird diversity was conducted using line transect surveys and infrared camera trapping from 2022 to 2023.The results showed that a total of 145 bird species were recorded,belonging to 15 orders and 49 families.Passeriformes dominated with 89 species across 31 families,while non-Passeriformes accounted for 56 species across 18 families.Two species of nationally protected Class I wild birds were recorded:Scaly-sided Merganser (Mergus squamatus) and Elliot's Pheasant (Syrmaticus ellioti),along with 22 species of nationally protected Class Ⅱ wild birds.According to the China Red List of Vertebrates,16 species were listed as threatened (endangered,vulnerable,or near-threatened),with an additional 61 bird species designated as provincially protected in Hunan.In terms of zoogeographical regions,oriental species predominated (71 species),and resident birds were the primary residency type (90 species).The woodland habitat had the highest species diversity index (3.47),while aquatic habitats had the lowest (1.95).Significant differences in bird species diversity were observed among different habitats,but no significant differences were found between functional zones.Based on these findings,the following conservation recommendations are proposed to strengthen wildlife protection awareness campaigns and strictly prohibit illegal hunting and habitat destruction;Establish an ecological compensation mechanism to provide economic incentives for affected villagers to encourage conservation efforts. Reference | Related Articles | Metrics | Comments（0）

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Properties of Ellipsoids and Rotational Ellipsoids GAO Wen, CAI Xuepeng, LIU Xue'er, PANG Yue Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 13-16.   DOI: 10.13438/j.cnki.jdzk.2026.01.003 Abstract （449）      PDF（pc） （419KB）（156）       Knowledge map    Save In this paper,the trajectory equations of ellipsoid and rotational ellipsoid are described by analyzing the characteristics of the trajectories of the points on these two ellipsoid surfaces. Reference | Related Articles | Metrics | Comments（0）

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Efficacy and Adverse Reactions of Microwave Ablation for Non-Small Cell Lung Cancer#br# REN Yuanmeng, LU Liqun, XU Jinhong, LEI Mingsheng, SHANG Xi Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 69-76.   DOI: 10.13438/j.cnki.jdzk.2025.05.010 Abstract （432）      PDF（pc） （982KB）（172）       Knowledge map    Save Through a search of Chinese and English databases,publicly published articles in domestic and international journals on microwave ablation for the treatment of non-small cell lung cancer were identified.A total of 19 articles were included.A Meta-analysis was conducted to evaluate the efficacy and adverse reactions of microwave ablation in the treatment of non-small cell lung cancer as reported in these articles.Trial sequential analysis was then employed to verify the stability of the results in the literature and to calculate the sample size required for consistent results.The results indicated that,compared with radiotherapy and chemotherapy alone,microwave ablation combined with radiotherapy and chemotherapy significantly improved the complete response rate (P<0.000 01),partial response rate (P=0.01),and overall response rate (P<0.000 01) of patients,without significantly increasing the incidence of adverse reactions such as myelosuppression (P=0.13),gastrointestinal reactions (P=0.79),and pneumothorax (P=0.43).Regarding the complete response rate and overall response rate,the current research results are consistent.However,for the partial response rate,myelosuppression,gastrointestinal reactions,and pneumothorax,the current research results are inconsistent,and further verification with a larger sample size is still required. Reference | Related Articles | Metrics | Comments（0）

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Bioinformatics Analysis of AQP Gene Family in Zea mays ZHANG Jun, LI Xuye, WANG Rui, GUO Wenkai, YOU Haiyang Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 57-66.   DOI: 10.13438/j.cnki.jdzk.2025.06.008 Abstract （424）      PDF（pc） （12656KB）（250）       Knowledge map    Save To elucidate the biological functions of the aquaporin (AQP) gene family in the growth and development of Zea mays,bioinformatics methods were used to identify and analyze the members of AQP gene family in Zea mays.The results showed that there were 28 members in the maize AQP gene family;the AQP sequences of the members contained 211 to 302 amino acids and exhibit high stability;the AQP gene family in maize is primarily divided into four subfamilies:PIP,NIP,TIP,and SIP,containing 8,7,10,and 3 genes,respectively;the spatial structures of proteins in each subgroup are similar and highly conserved. Reference | Related Articles | Metrics | Comments（0）

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Several New Criteria for Block H-Matrices HE Yongfang, MO Hongmin, YI Hong Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 17-24.   DOI: 10.13438/j.cnki.jdzk.2026.01.004 Abstract （406）      PDF（pc） （526KB）（171）       Knowledge map    Save A new class of block H-matrices—block strictly α-locally double  diagonally dominant matrices is defined,and three new criteria for the block H-matrices are given. Reference | Related Articles | Metrics | Comments（0）

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Derivation of the General Formula of Higher Order Linear Recursive Sequences by Using Matrix Methods FEI Mingbing, ZHUO Zepeng Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 1-4.   DOI: 10.13438/j.cnki.jdzk.2025.05.001 Abstract （402）      PDF（pc） （475KB）（157）       Knowledge map    Save By introducing column vectors,the problem of finding the general term of a high-order linear recursive sequence is transformed into a problem of finding the power of a square matrix,and then the general term of a high-order linear recursive sequence is obtained by using the theory of Jordan's canonical form with the theory of matrix representation between vectors. Reference | Related Articles | Metrics | Comments（0）

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Lattice Boltzmann Method for Solving the Generalized BBM-KdV Equation ZHAO Mengmeng, DAI Houping, DONG Yaru Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 24-34.   DOI: 10.13438/j.cnki.jdzk.2025.06.004 Abstract （370）      PDF（pc） （1305KB）（149）       Knowledge map    Save For the generalized BBM-KdV equation with mixed derivative terms,based on the lattice Boltzmann method,by using Taylor expansion and Chapman-Enskog multiscale expansion technique,the local equilibrium distribution functions and correction functions in each direction of the one-dimensional and two-dimensional generalized BBM-KdV equations are obtained,and then the one-dimensional and two-dimensional generalized BBM-KdV equations are restored.Under the condition of monotonicity,the stability of the iterative format of the lattice Boltzmann method is proved. Reference | Related Articles | Metrics | Comments（0）

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Valley-Locked Edge States and Corner States in Dendritic Phonon Crystals#br# LIU Shuqi, LIU Yuanli, KONG Peng, ZHAO Heping Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 35-41.   DOI: 10.13438/j.cnki.jdzk.2025.06.005 Abstract （366）      PDF（pc） （13575KB）（219）       Knowledge map    Save To study the acoustic wave propagation characteristics of two-dimensional higher-order topological insulators,a third-order dendritic valley phononic crystal structure with C3v symmetry was designed.By rotating the scatterers to break spatial symmetry,the valley Hall edge states were successfully realized.On this basis,a Zigzag interface topological waveguide and a triangular corner structure were constructed,and their acoustic wave transmission behaviors were analyzed.The results show that in the topological waveguide,the acoustic waves are effectively localized at the Zigzag interface;in the triangular corner structure,corner states with valley switchability and selectivity appear. Reference | Related Articles | Metrics | Comments（0）

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An Improved Multi-Strategy Sparrow Search Algorithm Based on Iterative Chaotic Mapping YU Cunwei, ZHANG Xianyu, LIU Xinyu Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 37-44.   DOI: 10.13438/j.cnki.jdzk.2025.05.006 Abstract （364）      PDF（pc） （855KB）（155）       Knowledge map    Save An improved multi-strategy sparrow search algorithm based on iterative chaotic mapping(IMSSA-ICM) is designed to address the problems of low accuracy and susceptibility to local optima in sparrow search algorithm.In the sparrow search algorithm,iterative chaotic mapping is used to initialize the sparrow population,and elite opposition-based learning and Levy flight strategy combined with roulette wheel selection mechanism are introduced to perturb the sparrow update position to optimize the traditional sparrow search algorithm's insufficient search accuracy and susceptibility to local extremum problems.On 12 benchmark test functions,IMSSA-ICM is compared with 5 classic swarm intelligence optimization algorithms.Simulation results show that IMSSA-ICM outperform the other 5 algorithms in terms of solving accuracy and escaping local optima. Reference | Related Articles | Metrics | Comments（0）

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Effects of Antioxidant Enzyme Activities on Waterlogging Tolerance of Actinidia valvata Under Waterlogging Stress XU Lingling, ZHANG Fanjing, LUO Qing, XU Yanling, GAO Jianyou, TIAN Xiaobo, ZHA Manrong, LIU Shibiao Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 67-74.   DOI: 10.13438/j.cnki.jdzk.2025.06.009 Abstract （359）      PDF（pc） （5065KB）（287）       Knowledge map    Save The root physiological changes of two kiwifruit varieties,Actinidia valvata "Shuixiu"  and Actinidia chinensis "Hongyang",were investigated under artificial waterlogging treatments of 6 h (early stage),24 h (middle stage),and 120 h (late stage).The results showed that in the early stage of waterlogging,the malondialdehyde (MDA) molar concentration in the roots of Actinidia valvata "Shuixiu" was relatively high,but then remained at a low level.In the early and middle stages of waterlogging,the molar concentration of superoxide anion (O-2) in the roots of Actinidia valvata "Shuixiu" was relatively low.In the early and middle stages of waterlogging,the root activity of Actinidia valvata "Shuixiu" was relatively strong.In the early,middle,and late stages of waterlogging,the superoxide dismutase (SOD) activity in the roots of Actinidia valvata "Shuixiu" remained at a relatively high level.With the extension of waterlogging stress time,the catalase (CAT) activity in the roots of Actinidia valvata "Shuixiu" first increased and then decreased,while the peroxidase (POD) activity first decreased and then increased.The activities of the three antioxidant enzymes in the roots of the Actinidia valvata "Shuixiu" waterlogging treatment group were always significantly higher than those of the control group,and were also higher than those of the Actinidia chinensis "Hongyang" waterlogging treatment group overall.Actinidia valvata "Shuixiu" can rapidly respond to waterlogging stress and activate the antioxidant defense system in time to alleviate the oxidative damage caused by waterlogging stress,showing strong waterlogging tolerance.The above indicators of Actinidia chinensis "Hongyang" were basically opposite to those of Actinidia valvata "Shuixiu",showing weak waterlogging tolerance. Reference | Related Articles | Metrics | Comments（0）

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Valley Phenomena and Corner State Realization in Bilayer Hexagonal Phononic Crystals LIU Fang, WANG Jiahao, KONG Peng, ZHAO Heping, DENG Ke Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 45-52.   DOI: 10.13438/j.cnki.jdzk.2025.05.007 Abstract （353）      PDF（pc） （25524KB）（241）       Knowledge map    Save Benefiting from valley-selective excitation and suppressed acoustic backscattering in valley topological insulators,we designed a mirror-symmetric bilayer hexagonal phononic crystal.Breaking spatial symmetry by adjusting the scatterers' orientation induces valley states.Numerical simulations show different valley topological phases emerge under varying scatterer angles,enabling selective path transport.Furthermore,constructing a triangular supercell with two valley topological phases in the bilayer hexagonal phononic crystal yields two sets of triangular corner states. Reference | Related Articles | Metrics | Comments（0）

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Bayesian Analysis of Kumaraswamy Distribution Parameters Under a Kind of Symmetric Loss  ZHANG Xuecheng, XU Bao Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 29-40.   DOI: 10.13438/j.cnki.jdzk.2026.01.006 Abstract （339）      PDF（pc） （856KB）（188）       Knowledge map    Save Under the weighted p,q symmetric entropy loss function,the Bayesian estimation method is used to estimate the Kumaraswamy distribution parameters,and the general and exact forms of the Bayesian estimation of the parameters are obtained,which proves the acceptability and minimum maximum of the obtained Bayesian estimation.The multi-level Bayesian estimation,E-Bayes estimation and knife-cut Bayesian estimation of the parameters are given.The numerical simulation of Bayes,E-Bayes and knife-cut Bayes estimation of Kumaraswamy distribution parameters is carried out by using R software combined with Metropolis algorithm.The results show that the Bayes estimation under the Jeffreys priors is more accurate than that under the conjugate prior distribution;the estimation properties under the same prior distribution can be better by using the knife cutting method;and the application of E-Bayes estimation can reduce the influence of hyperparameters on the simulation by selecting appropriate constants. Reference | Related Articles | Metrics | Comments（0）

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Ten New Recorded Species of Seed Plants in Hubei Province ZHANG Yujie, LI Xinran, SHI Guo, ZHANG Daigui, ZHANG Menghua, ZHANG Li Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 75-82.   DOI: 10.13438/j.cnki.jdzk.2025.06.010 Abstract （321）      PDF（pc） （33523KB）（147）       Knowledge map    Save Through field surveys and specimen examinations,ten seed plants from Hubei province are confirmed as new records,which belong to ten genera of ten families,including Arisaema hunanense Hand.-Mazz.,Chrysosplenium nepalense D. Don,Ranunculus pseudopygmaeus Hand.-Mazz.,Vicia sepium L.,Ranunculus sinovaginatus W. T. Wang,Cardamine tangutorum O. E. Schulz,Impatiens oxyanthera Hook. f.,Meehania zheminensis A.Takano,Pan Li & G.H.Xia,Rubus rubrisetulosus Cardot and Symplocos groffii Merr..All voucher specimens are deposited in the Kunming Institute of Botany,Chinese Academy of Sciences. Reference | Related Articles | Metrics | Comments（0）

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Information Fusion of Fuzzy Partial Order Relations on Continuous Information Sets XIA Xiuyun, TIAN Hao Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 7-14.   DOI: 10.13438/j.cnki.jdzk.2025.06.002 Abstract （319）      PDF（pc） （525KB）（145）       Knowledge map    Save Firstly,the basic concepts of evaluation decision on the classical fusion.Then,based on the definition and related properties of fuzzy partial order information fusion in the context of information system,different fuzzy partial order models have been established for evaluating decisions.Finally,information fusions for fuzzy partial order relationships on continuous information sets are discussed. Reference | Related Articles | Metrics | Comments（0）

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Convergence Analysis of Numerical Solution of Delayed Interest Rate Model with Poisson Jumps FENG Denghong, LI Zhimin Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 10-18.   DOI: 10.13438/j.cnki.jdzk.2025.05.003 Abstract （298）      PDF（pc） （566KB）（207）       Knowledge map    Save An Ait-Sahalia interest rate model is constructed with delayed volatility driven by Poisson jumps,and its dynamic properties are investigated through a modified truncated Euler-Maruyama (EM) method.Under the theoretical framework of local Lipschitz conditions and Khasminskii-type conditions,it is proved that the numerical solution generated by the modified truncated EM method converges strongly to the true solution of the model. Reference | Related Articles | Metrics | Comments（0）

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Spatial-Temporal Characteristics of Urban Expansion and Evolutionary Features of Spatial Form in the Built-up Areas of Wulingyuan LONG Tengzhe, LUO Bincheng, HU Yuewen, YANG Jing, WANG Yunzhe Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 90-96.   DOI: 10.13438/j.cnki.jdzk.2026.01.012 Abstract （289）      PDF（pc） （7182KB）（164）       Knowledge map    Save Taking the built-up areas of Wulingyuan District,Zhangjiajie as the research subject,this study employs fractal theory and equal-sector analysis based on Landsat remote sensing image data in 2000,2005,2010,2015,and 2022 to quantitatively analyze the spatiotemporal characteristics of urban spatial expansion and the evolution of spatial form of the built-up areas in Wulingyuan.Results indicate that from 2000 to 2022,the built-up area expansion exhibited distinct phased characteristics,progressing through four stages:"moderate speed,low intensity","low speed,low intensity","moderate speed,moderate intensity",and "high speed,high intensity".The period from 2015 to 2022 represented the peak phase of expansion.The expansion exhibited pronounced anisotropy,unfolding as an east-west ribbon pattern.The expansion progressed through four phases:slow wing-fan expansion,slow dendritic expansion,rapid wing expansion,and rapid axial expansion.The compactness index of the urban spatial form exhibited a V-shaped pattern,reaching its lowest point in 2015;while the fractal dimension continued to decline.The urban spatial expansion pattern shifted from outward expansion to internal infill,with the strip-like spatial form tending to be stable.Based on these findings,several recommendations are proposed for the urbanization development of Wulingyuan District. Reference | Related Articles | Metrics | Comments（0）

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Strong Continuity of Topological Space XUE Jie, LIU Gang Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 25-28.   DOI: 10.13438/j.cnki.jdzk.2026.01.005 Abstract （278）      PDF（pc） （452KB）（188）       Knowledge map    Save Based on the convergence of directed sets,the concepts of strongly continuous top ological spaces and strong topology are introduced.It is proved that all strongly continuous spaces are continuous spaces,and counter-examples are provided to demonstrate that continuous spaces are not necessarily strongly continuous spaces.Furthermore,the insertion property of approximation relations on strongly continuous spaces is explained,and the conditions for the equivalence between strongly continuous spaces and approximation spaces are established. Reference | Related Articles | Metrics | Comments（0）

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Spatial-Temporal Characteristics of and Influencing Factors for Online Attention on High-Level Scenic Spots in the Western Hunan Region LIU Shuiliang, HUANG Chao, DONG Xiaotong Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 90-96.   DOI: 10.13438/j.cnki.jdzk.2025.06.012 Abstract （276）      PDF（pc） （639KB）（376）       Knowledge map    Save Based on the Baidu Index from 2017 to 2023,this study analyzes the spatio-temporal characteristics of and influencing factors for online attention on high-level scenic spots in Western Hunan region.The results show that:(1) The online attention in the past seven years has first declined and then risen;there are significant seasonal differences,with higher attention in summer and autumn;attention is higher during holidays and there is a clear precursor effect.(2) There is a large spatial difference in online attention,with a significant primacy effect,showing a relatively scattered distribution but a trend of concentrated development,with obvious distance effect and local consumption characteristics.(3) The main factors affecting the online attention include the resources,climate,the distance between the scenic spots and the tourist source areas,holiday systems,economic factors in the tourist source areas,and changes in the external tourism environment. Reference | Related Articles | Metrics | Comments（0）

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Upper Bounds of Sombor Energy of Circulant Graphs ZHOU Houqing, REN Yong Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 1-6.   DOI: 10.13438/j.cnki.jdzk.2025.06.001 Abstract （262）      PDF（pc） （451KB）（200）       Knowledge map    Save The Sombor energy of a graph is the sum of the absolute values of the eigenvalues of the Sombor matrix of the graph.By applying matrix theory and inequality properties,as well as the relationship between the Sombor energy of a graph and the energy of the graph,several new upper bounds of the Sombor energy of circulant graphs are obtained. Reference | Related Articles | Metrics | Comments（0）

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Short-Term Photovoltaic Power Prediction Based on VMD-CNN-BiLSTM-RF LI Li Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 41-48.   DOI: 10.13438/j.cnki.jdzk.2026.01.007 Abstract （257）      PDF（pc） （2576KB）（197）       Knowledge map    Save In response to the non-stationary nature and noise interference caused by weather affected photovoltaic power generation,as well as the spatiotemporal coupling effect,a short-term power prediction composite model VMD-CNN-BiLSTM-RF based on Variational Mode Decomposition (VMD),Convolutional Neural Network (CNN),Bi-directional Long Short-Term Memory(BiLSTM),and Random Forest (RF) is proposed.This model uses VMD to decompose the original power sequence into multiple stationary sub-modes,reducing the impact of noise and non-stationarity.It combines CNN with BiLSTM to simultaneously capture spatial features and temporal dependencies of time series data,improving the accuracy of predictions.RF is integrated with sub-model prediction results to enhance the model's generalization ability.An experimental environment was set up on the Matlab platform to conduct comparative experiments and error analysis for the VMD-CNN-BiLSTM-RF combined model.The results show that this model  has significantly improved the accuracy and robustness of short-term photovoltaic power generation prediction. Reference | Related Articles | Metrics | Comments（0）

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Notations to Exponential Diophantine Equations (204m2+1)x+(237m2－1)y=(21m)z WANG Cheng, YANG Hai, CHENG Yajie Journal of Jishou University(Natural Sciences Edition)    2026, 47 (2): 6-9.   DOI: 10.13438/j.cnki.jdzk.2026.02.002 Abstract （256）      PDF（pc） （423KB）（130）       Knowledge map    Save Let m be a positive integer.By using the upper bound of solutions to the generalized Ramanujan-Nagell equation,Jacobi symbols,modular arithmetic,and methods of elementary number theory,it is proven that that the equation (204m2+1)x+(237m2－1)y=(21m)z only has the positive integer solution (x,y,z)=(1,1,2) when 2|/m,3|/m and m≡3,4(mod 7). Reference | Related Articles | Metrics | Comments（0）

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Analysis of Codon Preference in Chloroplast Genome of Extremely Small Population Plant Gleditsia japonica var. velutina YU Xiao, SUN Tian, GAO Chen Journal of Jishou University(Natural Sciences Edition)    2025, 46 (6): 47-56.   DOI: 10.13438/j.cnki.jdzk.2025.06.007 Abstract （250）      PDF（pc） （731KB）（193）       Knowledge map    Save In this study,Codon W,CUSP and R software were used to analyze the codon preference of Gleditsia japonica var. velutina chloroplast genome.Codon characteristic analysis revealed that the codons of chloroplast genes in Gleditsia japonica preferred to end with A or U,and the codon preference was relatively weak,with the effective codon number (ENC) ranging from 35.83 to 52.01.The correlation analysis among the parameters of the codon shows that the base composition of the first two positions of the codon is similar,but there is a significant difference from that of the third position.Analysis of relative synonymous codon usage revealed that the synonymous codons of chloroplast genes in Gleditsia japonica preferred to end with A or U.PR2-Plot analysis shows that the third base of the synonymous codon prefers to end with U or G (especially U).Optimal codon analysis shows that there are a total of 20 optimal codons,namely GCU,AGA,CGA,AAU,UGU,CAA,GAA,GGU,CAU,AUA,AUU,UUA,AAA,UUU,CCU,AGU,ACU,UAU,GUA and GUU.Neutral evolutionary analysis revealed that natural selection and mutational stress jointly shaped the codon preference of chloroplast genes in Gleditsia japonica.The analysis of ENC-Plot and ENC ratio showed that the influence of natural selection on codon preference was greater than that of mutational pressure.This indicates that natural selection is the main driving force for the formation of codon of chloroplast genes in Gleditsia japonica. Reference | Related Articles | Metrics | Comments（0）

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Error Estimation of the Extended Vertical Linear Complementarity Problems of CKV-Type Matrix and CKV-Type-B Matrix JIANG Jianxin Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 6-12.   DOI: 10.13438/j.cnki.jdzk.2026.01.002 Abstract （248）      PDF（pc） （519KB）（179）       Knowledge map    Save The error bounds of the solutions to the extended vertical linear complementarity problem are studied for the CKV-type matrix and the CKV-type-B matrix.Under the premise that "any sub-block of the block matrix satisfies the definition of the two types of matrices",it is proved that after row rearrangement of the original block matrix,each sub-block of the new matrix still maintains the same type as the original matrix sub-block,and the rearranged matrix has the row W-property.On this basis,the error bound expressions of the solutions to the problems corresponding to the two types of matrices are derived. Reference | Related Articles | Metrics | Comments（0）

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Design of an Extended State Observer Based on the Improved Fal Function Filter DING Meiling, CHEN Huirong, ZHANG Zhengzheng Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 49-54.   DOI: 10.13438/j.cnki.jdzk.2026.01.008 Abstract （246）      PDF（pc） （5389KB）（170）       Knowledge map    Save A filter based on an improved Fal function was designed,and its filtering performance was analyzed.Simulation results demonstrate that this filter achieves favorable filtering effects.Building upon this,an improved Extended State Observer (ESO) was developed by integrating the improved Fal function filter with the ESO framework.The performance of the traditional ESO and the improved ESO in handling measurement noise in sinusoidal and step signals was compared and analyzed.Simulation results indicate that,compared with the traditional ESO,the improved ESO exhibits superior performance in both noise suppression and target signal tracking. Reference | Related Articles | Metrics | Comments（0）

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Research Progress on Halophilic Bacteria Based on Bibliometric Evaluation ZOU Wenhai, DA Chunyao, DENG Liying, CHEN Jinhua, LIU Zhuxiang, CHEN Yiguang Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 78-89.   DOI: 10.13438/j.cnki.jdzk.2026.01.011 Abstract （245）      PDF（pc） （3868KB）（189）       Knowledge map    Save With the Web of Science Core Collection as the data source,the "Bibliometrix" R package together with CiteSpace software was applied to perform bibliometric analysis and visualization of research on halophilic bacteria from 2015 to 2024.The results show that publication output in this field has remained relatively stable over the past decade,reaching a peak in 2021.China and the United States are the leading contributors,with the Chinese Academy of Sciences identified as a major institution in this area.Current research hotspots focus on the diversity and polyphasic taxonomy of halophiles,community ecological structure and metagenomic functional analysis,and the resource utilization of metabolites.Research trends have gradually shifted from traditional taxonomy to phylogenomics,functional multi-omics,and applied biotechnology. Reference | Related Articles | Metrics | Comments（0）

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Existence of Solutions of a Schrdinger-Bopp-Podolsky System with Vanishing Potential JIANG Qiaoyun, LI Lin Journal of Jishou University(Natural Sciences Edition)    2025, 46 (5): 5-9.   DOI: 10.13438/j.cnki.jdzk.2025.05.002 Abstract （236）      PDF（pc） （476KB）（155）       Knowledge map    Save The existence of non-trivial solutions of a class of Schrodinger-Bopp-Podolsky system is studied by using variational method and mountain pass theorem,whose potential is vanishing potential,and the nonlinear term meets the super quartic condition. Reference | Related Articles | Metrics | Comments（0）

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Effect of the Number of Working Wells on the Seasonal Operation of the Compressed CO2 Energy Storage System in Aquifers〖STBZ〗 LAI Yangzhi, LI Yi, HUANG Leqing Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 55-66.   DOI: 10.13438/j.cnki.jdzk.2026.01.009 Abstract （230）      PDF（pc） （9973KB）（176）       Knowledge map    Save To clarify the influence of the number of working wells on the operational performance of seasonal aquifer compressed CO2 energy storage systems,three three-dimensional numerical models of well groups - gas storage reservoirs with different numbers of working wells (9,5,and 3) were established.The T2WELL numerical simulation software was used to investigate the seasonal cyclic operation process of the energy storage system under different numbers of working wells.The results showed that when the number of working wells decreased from 9 to 3,the maximum pressure at the wellhead of the central well increased from 17.42 MPa to 18.23 MPa,and the maximum temperature at the wellhead of the central well rose from 59.21 ℃ to 60.18 ℃.The maximum energy efficiency of the energy storage system droped from 1.028 55 to 1.027 74.This indicates that the number of working wells significantly affects the CO2 migration pattern and pressure/temperature transfer process within the wellbore - formation system.Therefore,in practical engineering,the number of working wells can be increased to reduce the pressure/temperature during the injection stage of the energy storage system's cyclic operation,thereby enhancing the energy efficiency of the energy storage system. Reference | Related Articles | Metrics | Comments（0）

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Damping Effect of Different Damping Layer Arrangements for Rectangular Tunnels with Weak Surrounding Rocks in Strong Seismic Areas LIANG Weijin, CUI Guangyao, NING Maoquan Journal of Jishou University(Natural Sciences Edition)    2026, 47 (2): 54-61.   DOI: 10.13438/j.cnki.jdzk.2026.02.008 Abstract （227）      PDF（pc） （10423KB）（180）       Knowledge map    Save In order to improve the safety of shallow buried rectangular tunnels with weak surrounding rocks when subjected to strong earthquakes,a comparative analysis of the seismic damping effect of rectangular tunnels with different damping layer arrangements is carried out using the finite element software ABAQUS.The results show that compared with the condition without damping layer (condition 1),after adding the segmental structure,the damping effects of condition 2 (cushion damping layer),condition 3 (semi-covered damping layer),and condition 4 (full-covered damping layer) were significantly improved,and condition 3 had the best damping effect.Compared with condition 1,the maximum principal stress peak,minimum principal stress peak,maximum shear stress,maximum lateral displacement,maximum vertical displacement,and minimum safety factor of  the damping effect in condition 3 increased by 8.893%,13.433%,5.698%,15.190%,41.860%,and 27.590% respectively.In seismic design,a semi-covered seismic damping layer construction scheme is recommended. Reference | Related Articles | Metrics | Comments（0）

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Periodic Solutions for a Class of Second-Order Difference Systems with Variable Exponent ZHANG Shengui Journal of Jishou University(Natural Sciences Edition)    2026, 47 (1): 1-5.   DOI: 10.13438/j.cnki.jdzk.2026.01.001 Abstract （221）      PDF（pc） （469KB）（183）       Knowledge map    Save This paper  investigates the existence of solutions for periodic boundary value of discrete p(k)-Laplacian systems.Under the generalized subquadratic conditions,some results for the existence of periodic solutions are obtained by using the saddle point theorem,and the validity of the solvability conditions is proved. Reference | Related Articles | Metrics | Comments（0）

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Zero Duality Gap Property of Quasiconvex Programming YANG Fang, WANG Xianyun Journal of Jishou University(Natural Sciences Edition)    2026, 47 (2): 1-5.   DOI: 10.13438/j.cnki.jdzk.2026.02.001 Abstract （198）      PDF（pc） （511KB）（152）       Knowledge map    Save By using the generator of the quasiconvex functions and the epigraph property of conjugate functions,we introduce some new constraint qualifications.Under those constraint qualifications,the zero duality gap properties between the quasiconvex programming problem and its Lagrange dual problem are established. Reference | Related Articles | Metrics | Comments（0）