分担值与亚纯函数的正规族

本文通过定义R1={f1=f－c;f∈R},将R在Δ上的正规转换为研究R1在Δ上的正规。运用文献［8］得到R1在Δ不正规的充分必要条件：存在点列zj∈Δ,函数列f1j∈R1和正数列ρj→0+,使得gj(ξ)=f1j(zj+ρjξ)→g(ξ),并且g(ξ)是非常数亚纯函数,再运用分担值的定义和文献［9］中的不等式得到g(ξ)又必为一个常数,通过反证推广了陈怀惠和方明亮的结果。设R是区域D上的一族亚纯函数,k是一不小于2的正整数,a,b,c是有穷复数,a≠b,如果对任意的f∈R,f－c的零点重级至少是k,并且f和f(k)在D分担a与b,则R在D上正规。
     

涉及微分多项式的亚纯函数分担集合的正规族

设F是单位圆盘Δ上的亚纯函数族,k是一正整数,a与b是两个不同的非零有穷复数,S={a,b}.ak-1(z),...,a1(z),a0(z)是Δ上的解析函数.如果对任意的f∈F,f的零点重数≥k 1,E-L(f)(S)E-f(S),其中L(f)=f(k)(z) ak-1(z)f(k-1)(z) ... a0(z)f(z),则F在Δ上正规.     

涉及微分多项式的亚纯函数的正规族

研究了亚纯函数涉及微分多项式的正规族,证明了:设F为单位圆盘Δ上的一族亚纯函数,k,n,q为正整数,P(w)=wq+aq-1(z)wq-1+…+a1(z)w是多项式。并且设H(f,f′,…,f(k))是不含常数项的微分多项式,a,b为任意的2个非零复数,若对任一f∈F,f的零点重数≥k+1,极点重数≥2,并且p(f(k))+H(f,f′,…,f(k))=a f(z)=b,则F在单位圆盘Δ上正规。     

障碍带条件下二阶差分方程边值问题的可解性

在障碍带条件下讨论了二阶差分方程边值问题Δ２u(k)=f(k,u(k),Δu(k)), k∈0,T,u(0)=A,Δu(T+1)=B解的存在性, 其中T ≥1是一个固定的自然数, f:0,T+2×R2 →R是连续函数.     

关于f的一个微分多项式分担值的正规定则

主要证明了以下的定理:设F为复平面上一区域上F的亚纯函数族,k为正整数,a为非零有穷复数,F中的每一个f的零点和极点的重级均≥k+2,记L(f)=a0f(k)+a1f(k-1)+…+akf,其中a0≠0,a1,…,ak为复数.若对任意的f,g∈F,L(f),L(g),在D内分担a,则F在D上正规.     

涉及分担集合的亚纯函数的正规族

设F是单位圆盘Δ上的一族亚纯函数,k为一正整数,a,b为两个互相判别的非零有穷复数,s={a,b},a0(z),a1(z),…,ak-1(z)是Δ上的解析函数.如果对任意的f∈F,f的零点重级≥k,当f=0时,|f(k)|≤h(h为一正数),且H(f)(s)=f(s),其中H(f)=f(k)(z) … a1(z)f'(z) a0(z)f(z),则F在Δ上正规.     

分担值与亚纯函数的正规族

本文通过定义R1={f1=f-c;f∈R},将R在Δ上的正规转换为研究R1在Δ上的正规。运用文献[8]得到R1在Δ 不正规的充分必要条件：存在点列zj∈Δ,函数列f1j∈R1和正数列ρj→0＋ ,使得gj（ξ）=f1j（zj＋ρjξ）→g（ξ）,并且g（ξ）是非常数亚纯函数,再运用分担值的定义和文献[9]中的不等式得到g（ξ）又必为一个常数,通过反证推广了陈怀惠和方明亮的结果。设R是区域D 上的一族亚纯函数,k是一不小于2的正整数,a,b,c是有穷复数,a≠b,如果对任意的f∈R,f-c的零点重级至少是k,并且f和f（k）在D 分担a 与b,则R在D 上正规。     

带非线性边界条件的二阶差分方程正解的全局结构

用分歧理论考察二阶离散边值问题{-Δ[p(k-1)Δu(k-1)]+q(k)u(k)=λa(k)f(u(k)),k∈[1,N]_Z,g_1(λ,u(0),Δu(0))=0,g_2(λ,u(N+1),Δu(N))=0正解的全局结构,得到了该问题正解存在的最优充分条件.其中:λ0是参数;[1,N]Z={1,2,…,N};p:[0,N+1]Z→+,q,a:[1,N]Z→R~+且对k∈[1,N]Z,a(k)0;g_1∈C(R~+×R~+×R~+,R~+);g_2∈C(R~+×R~+×(-∞,0],R~+);f∈C(R~+,R~~+).     

关于几类分式函数迭代问题的研究

主要讨论分式函数的迭代问题.先从研究有理分式出发,用数学归纳法和共轭相似法讨论几类x ax+b有理线性分式函数f(x)=,f(x)=,a,b,c,d∈R,c(ad-bc)≠0的n次迭代问题,并以此为结论再讨1+ax cx+d x x1论了几类无理分式f(x)==k,f(x),f(x)=k,a,b∈R,k=1,2,3,…的函数迭代,给出1+axk1+2ax+a2xa+bxk了它们的次迭代式.     

亚纯函数的正规族

设R为区域D上的亚纯函数族,k为至少为2的正整数,a,b,c 为相互判别的有限复数.若对R满足,f(z)-c的零点至少为k,f的极点至少为2k 3,且(E)f(a)(∪)(E)f(k)(a),(E)f(b)(∪)(E)f(k)(b),则R在D上正规.     

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