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武汉大学自然科学学报(英文版)
武汉大学自然科学学报(英文版)

刘经南

双月刊

1007-1202

Whdy@whu.edu.cn

027-68752259

430072

湖北武昌珞珈山武汉大学梅园一舍

武汉大学自然科学学报(英文版)/Journal Wuhan University Journal of Natural SciencesCSCDCSTPCD北大核心
查看更多>>本刊创刊于1996年。本刊是自然科学综合性学术期刊,主要刊登自然科学各学科的最新研究成果。本刊已被《EI》、《CA》、《SA》、《AJ》、《JOURICK》、《MR》等作为刊源收录,《SCI》正在对本刊进行评估。
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    A Note of the Interpolating Sequence in Qp∩H∞

    ZHOU JizhenSUN Hejie
    1-6页
    查看更多>>摘要:In this paper,{zn}=1acts as an interpolating sequence for Qp∩H∞.An analytic function f is constructed,and f(zn)=Σλjfz(zn)=λn,n=1,2,… for any{λn}∈l∞,where f andfz,belong to Qp∩H∞.As a result,the study achieves a comparable outcome for F(p,p-2,s)∩H∞.

    Meromorphic Functions Sharing Two Values

    ZHAO YingHUANG Zhigang
    7-12页
    查看更多>>摘要:Let f and g be two nonconstant meromorphic functions,and n be a positive integer.Iffn(z)and gn(z)share 1 CM(counting multiplicities),f(z)and g(z)share ∞ IM(ignoring multiplicities),and(N)(r,1/f)+(N)(r,1/g)=S(r,f)+S(r,g),then either f(z)=tg(z)or f(z)g(z)≡t,where tn=1.As an application,shared values problems of a meromorphic function related to its shifts and difference opera-tors are also investigated.

    Common Fixed Points for Multiplicative Contractions in Multiplicative Metric Spaces

    SONG JipingLUO TianqiLEI Lei
    13-20页
    查看更多>>摘要:The study delves into multiplicative contractions,exploring the existence and uniqueness of common fixed points for a weakly compatible pair of mappings.Those mappings adhere to specific multiplicative contraction conditions characterized by exponents ex-pressed as fraction multiplicative metric spaces.It is noted that a metric can induce a multiplicative metric,and conversely,a multiplicative metric can give a rise to a metric on a nonempty set.As an application,another proof of the existence and uniqueness of the solution of a multiplicative initial problem is given.

    Uniform Asymptotics for Finite-Time Ruin Probabilities of Risk Models with Non-Stationary Arrivals and Strongly Subexponential Claim Sizes

    XU ChenghaoWANG KaiyongPENG Jiangyan
    21-28页
    查看更多>>摘要:This paper considers the one-and two-dimensional risk models with a non-stationary claim-number process.Under the assump-tion that the claim-number process satisfies the large deviations principle,the uniform asymptotics for the finite-time ruin probability of a one-dimensional risk model are obtained for the strongly subexponential claim sizes.Further,as an application of the result of one-dimensional risk model,we derive the uniform asymptotics for a kind of finite-time ruin probability in a two dimensional risk model sharing a common claim-number process which satisfies the large deviations principle.

    A Full-Newton Step Feasible Interior-Point Algorithm for the Special Weighted Linear Complementarity Problems Based on a Kernel Function

    GENG JieZHANG MingwangZHU Dechun
    29-37页
    查看更多>>摘要:In this paper,a new full-Newton step primal-dual interior-point algorithm for solving the special weighted linear complementar-ity problem is designed and analyzed.The algorithm employs a kernel function with a linear growth term to derive the search direction,and by introducing new technical results and selecting suitable parameters,we prove that the iteration bound of the algorithm is as good as best-known polynomial complexity of interior-point methods.Furthermore,numerical results illustrate the efficiency of the proposed method.

    Three New Classes of Subsystem Codes

    LI HuiLIU XiushengHU Peng
    38-44页
    查看更多>>摘要:In this paper,we construct three classes of Clifford subsystem maximum distance separable(MDS)codes based on Reed-Solomon codes and extended generalized Reed-Solomon codes over finite fields Fq for specific code lengths.Moreover,our Clifford sub-system MDS codes are new because their parameters differ from the previously known ones.

    Optimal Asymmetric Quantum Codes from the Euclidean Sums of Linear Codes

    XU PengLIU Xiusheng
    45-50页
    查看更多>>摘要:In this paper,we first give the definition of the Euclidean sums of linear codes,and prove that the Euclidean sums of linear codes are Euclidean dual-containing.Then we construct two new classes of optimal asymmetric quantum error-correcting codes based on Euclidean sums of the Reed-Solomon codes,and two new classes of optimal asymmetric quantum error-correcting codes based on Euclid-ean sums of linear codes generated by Vandermonde matrices over finite fields.Moreover,these optimal asymmetric quantum error-correcting codes constructed in this paper are different from the ones in the literature.

    Learning Label Correlations for Multi-Label Online Passive Aggressive Classification Algorithm

    ZHANG Yongwei
    51-58页
    查看更多>>摘要:Label correlations are an essential technique for data mining that solves the possible correlation problem between different la-bels in multi-label classification.Although this technique is widely used in multi-label classification problems,batch learning deals with most issues,which consumes a lot of time and space resources.Unlike traditional batch learning methods,online learning represents a promising family of efficient and scalable machine learning algorithms for large-scale datasets.However,existing online learning research has done little to consider correlations between labels.On the basis of existing research,this paper proposes a multi-label online learning algorithm based on label correlations by maximizing the interval between related labels and unrelated labels in multi-label samples.We evaluate the performance of the proposed algorithm on several public datasets.Experiments show the effectiveness of our algorithm.

    Variational Data Assimilation Method Using Parallel Dual Populations Particle Swarm Optimization Algorithm

    WU ZhongjianLI Junyan
    59-66页
    查看更多>>摘要:In recent years,numerical weather forecasting has been increasingly emphasized.Variational data assimilation furnishes precise initial values for numerical forecasting models,constituting an inherently nonlinear optimization challenge.The enormity of the dataset under consideration gives rise to substantial computational burdens,complex modeling,and high hardware requirements.This paper em-ploys the Dual-Population Particle Swarm Optimization(DPSO)algorithm in variational data assimilation to enhance assimilation accu-racy.By harnessing parallel computing principles,the paper introduces the Parallel Dual-Population Particle Swarm Optimization(PDPSO)Algorithm to reduce the algorithm processing time.Simulations were carried out using partial differential equations,and compari-sons in terms of time and accuracy were made against DPSO,the Dynamic Weight Particle Swarm Algorithm(PSOCIWAC),and the Time-Varying Double Compression Factor Particle Swarm Algorithm(PSOTVCF).Experimental results indicate that the proposed PDPSO out-performs PSOCIWAC and PSOTVCF in convergence accuracy and is comparable to DPSO.Regarding processing time,PDPSO is 40%faster than PSOCIWAC and PSOTVCF and 70%faster than DPSO.

    Influence of Kerr Effect on Second-Order Nonlinearity Induced Transparency

    ZHANG ZhiqiangZHOU Yanhui
    67-73页
    查看更多>>摘要:We theoretically study the effect of Kerr effect on the second-order nonlinearity induced transparency in a double-resonant opti-cal cavity system.We show that in the presence of the Kerr effect,as the strength of the Kerr effect increases,the absorption curve exhibits an asymmetric-symmetric-asymmetric transition,and the zero absorption point shifts with the increase of the Kerr effect.Furthermore,by changing the strength of the Kerr effect,we can control the width of the transparent window,and the position of the zero-absorption point and meanwhile change the left and right width of the absorption peak.The asymmetry absorption curve can be employed to improve the quality factor of the cavity when the frequency detuning is tuned to be around the right peak.The simple dependence of the zero-absorption point on the strength of Kerr effect suggests that the strength of Kerr effect can be measured by measuring the position of the zero-absorption point in a possible application.