一类模糊选择函数的合理性条件程度的研究

在集合收缩扩张意义下讨论了模糊选择函数的合理性条件程度Fα(C)、Fβ(C)及FA(C)之间的关系,并在此基础上推广了Arrow-Sen定理的程度描述。     

关于沈度量的几个性质

研究一种特殊的（α，β）-度量，即沈度量F=（α＋β）^2/α，首先给出了F的一些重要几何量；其次得到了F成为Berwald度量的三个充要条件；最后证明了在α射影平坦的条件下，F射影平坦当且仅当β关于α平行，这时F必然，具有零曲率。     

半序线性空间的分子结构

给出数域F上线性空间的一类更一般的统一框架，即广义线性空间的概念：设T是论域，F是数域，V(T)=|ρ|ρ：T→F|，任意ρ，σ∈V(T)，任意α∈F，规定(ρ+σ)(x)=ρ(x)+σ(x)，(αρ)(x)=α(ρ(x)，则V(T)为F上的广义线性空间．在该框架下引入半序关系，构造一类半序线性空间(V，≤)：任意α，β，γ∈V，任意α∈F，α≤β，则1)α+γ≤β+γ且γ+α≤γ+β；2)当α≥0时，αα≤αβ，当α<0时，αβ≤αα．同时构造了分子概念：格L中的元素α称为并既约元，若任意x，y∈L，α=x∨y，则α=x或α=y，L中非最小元的并既约元称为L中的分子．并讨论其分子结构，从而为进一步探讨线性空间上的代数结构、序结构及拓扑结构的复合结构奠定理论基础．     

次线性期望空间下Marcinkiewicz型加权和的完全收敛性（英文）

研究了满足矩条件为E(|X|β)∞,β=max(α,γ),其中0α≤2,γ0且α≠γ情形下的次线性期望空间中END序列加权和的完全收敛性.对前人工作的相应结果进行了改进,并将其推广到了次线性期望空间下END序列加权和的情形.     

用准欧空间的二次型对狭义相对论的几点解释

实线性空间V 上给定一个二元实函数(α,β)并满足以下条件时称为欧几里德空间:1),(α,β)=(β,α),2),(kα,β)=k(α,β),3),(α β,γ):(α,γ) (β,γ),4),(α,α)≥0,(α,α)=0(?)α=0.这里α,β,γ∈V,θ是零向量,k 为实数。以下我们总假定dimV=n,e_1,…,e_n 是一基底。条件1),2),3)表明(α,β)由对称阵A=((e_i,e_j)所完全决定;但4)是一个独立的条件。将要看到,如果放弃4),允许(α,α)<0或α     

具有极点和正则点的非线性迭代方程的解析解

本文主要研究具有极点和正则点的非线性迭代方程G(z)x′(z)=x(αz+βx(z))+F(x(z))的解析解.在第二章和第三章中通过把已知方程转化为不含未知函数迭代的辅助方程[ψ(λz)-αψ(z)][λψ′(λz)-αψ′(z)]G(ψ(z))=ψ(z)[ψ(λz)-αψ(z)][ψ(λ2z)-αψ(λz)]ψ′(z)+β2ψ(z)ψ′(z)F(1/β(ψ(λz)-αψ(z))),z∈C.和G(g(z))[γg′(γz)-αg′(z)]=b(γ2z)-αg(γz)]g′(z)+βg′(z)F(1/β(g(γz)-αg(z))).从而得到原方程在极点和正则点处的解析解x(z)=1/β[ψ(λψ-1(z))-αz,x(z)=1/β[g(γg—1(z))-αz].     

某类沿曲面的强奇异积分算子在调幅函数空间上的有界性

假设β1α1 0,β2α2 0。文章对如下定义的强奇异积分算子Q乙2f(x-t, y-s, z-γ(t)h(s))t1e+α1,γ(t), h(s)满足某些适当的条件。利用振荡积分估计,得到当β1 3α1 0且β2     

矩阵的一个判定条件

引进了局部(α,β,γ)-对角占优矩阵的相关概念,在严格局部(α,β,γ)-对角占优条件下,获得了非奇异H-矩阵的实用判别准则,推广了已有的相关结果.     

分布函数间几种散布序的关系

设 F是分布函数 ,对 α∈ (0 ,1 ) ,记 X+F (α) =sup{ x:F(x) <α} ,X-F (α) =inf{ x:F(x) >α} ,XF(α) =(X+F (α) +X-F (α) ) /2 .本文给出了分布函数 F和 G之间的一种散布序 ,记作 d≤ ,F d≤ G 0 <α<β<1 ,XF(β) - XF(α)≤ XG(β) - XG(α) .在一定的条件下 ,讨论了几种散布序 d≤ ,disp≤ ,d*≤ 的等价关系     

镍铝青铜中的共析组织

在含(9～10)wt％Al和(0.1～5)wt％Ni的镍铝青铜中可能出现α+γ_2,α+β′_2和α+γ_2+β′_2三种共析组织。α+γ_2和α+β′_2两种共析组织的形貌十分相似,但α+β_2比α+γ_2更致密。在α+γ_2+β′_2共析组织中,β′_2主要集中于共析区边界,而γ_2则分布共析区内部,γ_2的晶粒度比β′_2粗大得多。在α+γ_2和α+β′_2含金中,α与γ_2(或β′_2)之间存在K—S和N—W两种位向关系,但当合金中存在α+β′_2+γ_2共析组织时,γ_2和β′_2位向一致,它们与α都成N—W位向关系。     

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