无界集合上的函数逼近

得到了函数系M（A）在C[e^-p（z）]中完备的一个充分条件,其中C[e^-p（z）]是所有在复平面的某个无界集合L上连续,且当;趋向无穷时,f（z）exp（-p（z））趋向零的复函数f组成的集合,在一致范数｜｜f｜｜=supe-p（z）z∈l｜f（z）｜下,C[e^-p（z）]是一个Bandch空间．     

拟似共形映照的参数表示

§1 设 w=f(z)是单位圆|z|<1到|w|<1的 Q-拟似共形映照(限于保持定向的映照,定义见)而且适合就范化条件 f(0)=0,f(1)=1.这种映照的全体就做U_Q.设 p(z),θ(z)是单位圆上分布的一对特征,在本文中为方便起见引入一个复函数     

平面区域上连续函数的Fourier系数的估计

设C是平面上封闭的解析曲线,其包围的区域记为 G;{P_n(z)}为区域 G中权为1的正交多项式系.又设 f(z)是 G 的闭包(?)上的连续函数.本文给出了连续函数 f(z)关于{P_n(z)}展开的 Fourier 系数 C_n=■的估计.     

单位圆内随机Taylor 级数的增长性

对十分一般的随机变量序列讨论了单位圆内的随机Taylor级数fω(z)的增长级，证明了fω(z)沿任一半径的增长级几乎必然（a.s.)为ρ。     

单位圆上复函数的广义梯形伴随不等式

分别在被积函数为有界变差、Lipschitzian.单调条件下,给出定义在单位圆C(0,1)上的复函数的广义梯形伴随不等式.     

一个正规定则的推广(英文)

研究了亚纯甬数的正规性,推广了徐焱和庞学成的正规定则.得到:设(Ψ)(≠0)是G(C)C上的一列全纯函数族,且k∈N.设(y)是G上的一列亚纯函数族,且零点的级数为2,极点的级数至少为k+2.对于任意的f∈(y)都有f(k)+a1(z)f(k-1)(z)+…+ak(z)≠Ψ(z),这里的a1(z),a2(z),…,ak(x)是G上的全纯函数,则(y)在G正规.     

对数留数定理的推广及应用

对传统的对数留数定理进行了推广,给出了一个一般性的结论,解决了一类被积函数为φ(z)f′(z)f(z)形式积分的计算问题,并给出了应用实例.     

涉及零点重数的整函数的唯一性

本文研究分担一个值的整函数的唯一性问题,证明了设f和g是非常数整函数,k,m为正整数且k≥3,m≥7,f和g的零点重数至少为m.若Eh(1,f)=Ek(1,g＇),则f(z)=Ciecx,g(z)==C2e-cx.其中C1.C2和C为常数且满足(C1C 2)C2=-1,或f g.这个结果推广并改进了Fang and Hua[4]和Yang and Hua[5]的一些结果.     

关于Capelli多演函数

§1.引言P.F.Capelli继Kasner关于通常复变函数多演性与Kramer对于对偶变量u+jv,j~2=0函数的多演性的研究之后,研究了“二项复数”z=x+ky,k~2=m+nk的函数的多演性,及其一阶导函数的轨迹。V.C.Poor曾借助于二变量的复变函数f(z,z′)的Cauchy积分公式,把一类多演函数f(z)展开成Tavlor级数。本文在于把Capelli多演函数f(z)展开成级数的形式(但方法不同于Poor);讨论f(z)的中心函数;及f(z)的拟似保形性。     

K值函数空间上诱导乘法算子的范数

设K是一个给定的复数域上可分希尔伯特空间,μ是单位圆周C上正规化的勒贝格测度。从C到K中的函数f(z)称为是可测的,有如下两种定义: 定义1 f(z):C→K称为是弱可测的,如果对于每一个固定的x∈K,复值函数(f(z),x)都是勒贝格可测的(其中(·,·)表示K中的内积)。 定义2 f(z):C→K称为是强可测的,如果f(z)是简单K值函数列的—a.e强极限。这里C上某个简单K值函数f_n(z)是指可把C分为有限的若干个两两不交可测子集,在每个这样的可测子集上f(z)取K的某一定常值。 以上两种定义均见于[2]。     

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