《应用数学》征稿简则

<正>1.本刊为中、英文混合版季刊,向国内外公开发行,主要刊登应用数学的创造性学术论文。2.来稿时不必寄审稿费。来稿请将文档转成PDF格式上传至投稿系统。未录用稿,原稿概不退还,请作者自留底稿。来稿不宜超过5000字(按中文计算)。3.中文稿要求项目依次为:题目、作者姓名、单位、所在地省市及邮政编码、摘要、关键词、AMS(2000)主题分     

《数学年刊A辑》(中文版)征稿简则

<正>1《数学年刊A辑》是综合性的数学期刊,主要刊登纯粹数学和应用数学两方面具有创造性的以中文书写的学术论文。每年1卷,为季刊,国内外公开发行。欢迎数学工作者踊跃投稿。2本刊发表的部分论文由美国阿伦顿出版公司用英文以季刊《中国当代数学》(Chinese Journal of Contemporary Mathematics)的刊名出版(简称C辑)。3来稿要求和注意事项     

多类型复发事件下的一类均值加速回归模型

在复发事件的统计分析中,事件的平均发生个数可能比其强度函数或危险率函数更具可解释性.为了评价协变量对复发事件的影响,许多学者考虑了复发事件的边际比例均值模型.然而,在许多实际应用中,协变量对复发事件不仅具有均值比例效应,而且还可能会加速或减缓复发事件的发生,即协变量对复发事件均值过程具有时间尺度效应.在多类型复发事件数据框架下,考虑一类广泛的加速均值模型.利用估计方程方法,获得了该模型中未知参数的估计,并且建立了所给估计的渐近性质.进一步通过模拟研究证实所提方法的优良表现.     

Examples of boundary layers associated with the incompressible Navier-Stokes equations

The author surveys a few examples of boundary layers for which the Prandtl boundary layer theory can be rigorously validated. All of them are associated with the incompressible Navier-Stokes equations for Newtonian fluids equipped with various Dirichlet boundary conditions (specified velocity). These examples include a family of (nonlinear 3D) plane parallel flows, a family of (nonlinear) parallel pipe flows, as well as flows with uniform injection and suction at the boundary. We also identify a key ingredient in establishing the validity of the Prandtl type theory, i.e., a spectral constraint on the approximate solution to the Navier-Stokes system constructed by combining the inviscid solution and the solution to the Prandtl type system. This is an additional difficulty besides the wellknown issue related to the well-posedness of the Prandtl type system. It seems that the main obstruction to the verification of the spectral constraint condition is the possible separation of boundary layers. A common theme of these examples is the inhibition of separation of boundary layers either via suppressing the velocity normal to the boundary or by injection and suction at the boundary so that the spectral constraint can be verified. A meta theorem is then presented which covers all the cases considered here.     

Calderón–Zygmund Operators in the Bessel Setting for All Possible Type Indices

We show that many harmonic analysis operators in the Bessel setting,including maximal operators,Littlewood–Paley–Stein type square functions,multipliers of Laplace or Laplace–Stieltjes transform type and Riesz transforms are,or can be viewed as,Calderón–Zygmund operators for all possible values of type parameter λ in this context.This extends results existing in the literature,but being justified only for a restricted range of λ.     

Rough singular integrals associated with surfaces of Van der Corput type简

In this paper,the authors establish the Lp-mapping properties for a class of singular integrals along surfaces in Rn of the form {φ(|u|)u : u ∈ Rn} as well as the related maximal operators provided that the function φ satisfies certain oscillatory integral estimates of Van der Corput type,and the integral kernels are given by the radial function h ∈Δγ(R+) for γ 1 and the sphere function Ω∈ Fβ(Sn.1) for some β 0,which is distinct from H1(Sn.1).     

几类数列不等式的证明方法的改进

文[1]给出三种类型的数列不等式的证明方法,笔者读后深受启发,但发现其方法有很大的局限性.本文提出它们的改进建议,供大家参考.类型Ⅰa1+a2+a3+…+an相似文献   

The convergence on spectrum of sample covariance matrices for information-plus-noise type data

In this paper,we consider the limiting spectral distribution of the information-plusnoise type sample covariance matrices Cn =1/N (Rn + σXn) (Rn + σXn)*,under the assumption that the entries of Xn are ...     

投稿者须知

<正>《数理统计与管理》是由中国现场统计研究会主办,公开发行的学术刊物,双月刊,是中国中文核心期刊,也是中国人文社会科学核心期刊。本刊主要刊登统计科学、管理科学(限与概率统计方法有关部分)及相关领域的有创造性的理论与方法的研究论文、有较大价值的应用成果、综合评论及动态报道。主要读者对象是统计学专业、管理科学专业和应用数学专业的高等院校师生、企事业单位中的工程技术人员及管理工作者。本刊是"中国学术期刊(光盘版)"的第一批成员。被"中国学术期刊文摘(中、英文)"首批收录为源期刊;也是"中国学术期刊综合评价数据库(CAJCED)"、"中文社会科学引文索引(CSSCI)"等的统计来源期刊。发表的文章被"中国科学引文数据库(CSCD)"、"中国期刊全文数据库(CJFD)"检索收录。