(ψ)-混合序列加权乘积和的完全收敛性

讨论了(ψ)-混合序列加权乘积和的完全收敛性,将NQD随机变量序列加权乘积和的完全收敛性推广到了(ψ)-混合序列的情形.     

行为ND随机变量阵列加权和的完全收敛性

在非同分布的情况下, 给出了行为ND随机变量阵列加权和的完全收敛性的充分条件, 所得结果部分地推广了独立随机变量和NA随机变量的相应结果. 作为其应用, 获得了 ND随机变量序列加权和的Marcinkiewicz-Zygmund型强大数定律.     

NA序列的强收敛性的注记

讨论了NA随机变量序列和的强收敛性,推广并改进了王月芬关于NA序列随机变量序列的一个收敛性.     

行为ND随机变量阵列加权和的矩完全收敛性

讨论了行为ND随机变量阵列加权和的矩完全收敛性, 利用矩不等式和截尾法获得了行为ND随机变量阵列加权和的矩完全收敛性的充分条件, 推广了相关结果。     

NSD随机变量加权和的强收敛性及应用

文章主要研究负超可加相依(negatively superadditive dependent,NSD)随机变量序列的强收敛性。利用NSD随机变量序列的Rosenthal型极大值不等式建立了NSD随机变量序列加权和的完全收敛性,并且在同样的条件下得到了较完全收敛性更强的完全矩收敛性的结果,所得结果推广并改进了负相协(negatively associated,NA)序列相应的结果。作为主要结果的应用,该文进一步得到了关于NSD随机变量加权和的强大数律并给出了数值模拟。     

NA序列部分和之和乘积的极限定理

设{X_n, n≥1}是一严平稳正值负相关(NA)随机变量序列, 满足EX₁=μ>0,  Var X₁=σ²<∞. 首先利用NA序列加权和的中心强极限定理和矩不等式证明, 其中N为标准正态随机变量; 其次, 对于边界函数和拟权函数给出NA序列部分和之和乘积的完全收敛性中精确渐近性的一般结果.     

一类随机变量序列关于乘积分布的强偏差定理

引进似然比作为整值随机变量序列相对于服从二项分布的独立随机变量序列的偏差的一种度量，并通过限制似然比给出了样本空间的一个子集，在此子集上得到了任意整值随机变量序列的一类用不等式表示的强极限定理，作为推论得到了服从二项分布的独立随机变量序列的一族强大数定理．进一步发展和完善了状态空间有限的随机变量序列关于乘积分布的强偏差定理．     

强混合序列部分和之和乘积的几乎处处中心极限定理

在前人给出独立和相依序列部分和的几乎处处中心极限定理的基础上,利用乘积转化和式的方法,给出强混合正随机变量序列部分和之和乘积的几乎处处中心极限定理。     

关于离散随机变量序列的一类强偏差定理

引入极限相对对数似然比的概念,作为离散相依随机变量序列与独立随机变量序列的偏差的一种度量,并利用它来研究离散相依随机变量序列的极限性质．引入一种全新的概率研究方法——分析法,得到了一类用不等式表示的强极限定理,即强偏差定理,其偏差界依赖于此极限相对对数似然比．作为推论得到了经典的独立随机变量序列的强大数定理,进一步发展和完善了状态空间离散有限的随机变量序列关于乘积分布的强偏差定理．     

一类随机变量部分和极大Serfling不等式及其应用

利用Serfling不等式得到了一类随机变量序列的矩不等式,然后运用这些矩不等式探讨了相应随机变量序列部分和的大偏差和强收敛性,所获结论推广和改进了相关文献已有结果.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with