B值随机序列的一类强极限定理

设{φn(x),n≥1}是具有φ-特征的偶函数序列,{Xn,n≥1)是B值随机变量序列,在φn(Xn)的矩条件下研究了随机序列{Xn,n≥1}所满足的强极限定理和强大数定律,使一些经典的强大数定律成为特例.     

一个推广的Borel强大数定律的改进

Borel通过研究Bernoulli试验,首先给出了其强大数定律,已有文献给出了一个推广的Borel强大数定律.作者改进了这个结果,将其中的条件dn=O(1/n)减弱为dn=O(1/nα),α>0.另外,将此结果推广到有界的随机变量序列的情形,给出其Borel强大数定律.     

可交换随机变量序列的随机极限定理的一个推广

讨论了可交换随机变量序列{Xn:n≥1}的极限定理,得到了可交换随机变量序列的随机强大数定律成立的充要条件,并在一定的条件下,推广了文[1]中的结果.     

混合序列的强大数律

独立同分布随机变量序列的强大数定律已很完善，近来混合序列的强大数定律发展很快，有的结果已接近独立同分布情形，本文对α－混合、ρ－混合，ψ－混合序列的强大数定律的进展情况作一介绍。     

对称随机变量序列的强大数定律

利用Háyek-Rényi型最大值不等式研究了对称随机变量序列.在一定条件下,得到了对称随机变量序列的强大数定律.     

φ混合序列的一个强大数律

利用随机变量的截尾方法和φ混合序列的三级数定理,得到了矩条件下珘φ混合序列的一类强大数定律,推广了若干已有的强大数律。     

同分布的两两NQD序列部分和之和的强大数定律

主要研究同分布两两NQD随机变量序列{Xn,n∈N}部分和之和Tn=∑i=1 n Si（其中Sn=∑i=1 n Xi）的强大数定律,通过给出几个等价的条件,建立了强大数定律,获得了与I．I．D列情形相类似的结论．     

两两NQD列的一个强大数律

利用随机变量的截尾方法和两两NQD序列的三级数定理,得到了矩条件下两两NQD序列的一类强大数定律,推广了若干已有的强大数律。     

强大数定律的点滴结果

本文引理2改进了Renyi—Hājek引理,作为引理2的应用,指出定理1的另一证法。定理2改变Teicher强大数定律中的条件(ⅲ),得到与它相并列的结果,定理3指出独立随机变量序列服从强大数定律的必要条件。设X_(?),n≥1为定义在概率空间(Ω.(?).P)上的随机变量。S_n=∑_h=1~nX_k,     

~ρ混合随机变量序列的完全收敛性

研究了非同分布~ρ混合随机变量序列的完全收敛性，在更一般的条件下，利用~ρ混合随机变量序列Rosenthal型不等式和截尾方法，得到了~ρ混合随机变量序列完全收敛的充分条件。作为推论，得到了~ρ混合随机变量序列的强大数定律，这些结果深化并推广了已有的相关结果。
     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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