封闭黎曼面上复围线黎曼边值问题

封闭黎曼面上复围线黎曼边值问题沈乃录（宁夏大学物理系，７５００２１，银川）１。黎曼边值问题的提法。设历为封闭黎曼面，它同胚于一个带有限数ｈ手的球面．Ｍ上给出复的分段光滑困线Ｌ，Ｌ上给定由ｒ个不同点组成的因子人。ｔ；ｔ。，…ｔｒ．假定空间Ｌ＼Ａ分成Ｎ条...     

一类开口弧段的Riemann边值问题的逆问题

一类开口弧段的Ｒｉｅｍａｎｎ边值问题的逆问题赵春（宁夏大学数学系，７５００２１，宁夏银川）文［２」讨论了一类常系数情形下的Ｒｉｅｍａｎｎ边值逆问题．本文Ｒｉｅｍａｎｎ逆边值问题由ｋ见可教授提出．我们利用解析函数边值问题经典理论，对此逆问题进行讨论．设...     

一类正则型函数组Riemann边值逆问题

一类正则型函数组Ｒｉｅｍａｎｎ边值逆问题杨晓春（宁夏大学数学系，７５００２１，宁夏银川）本文讨论了一类特殊形式的正则型函数组Ｒｉｅｍａｎｎ边值问题的逆问题．利用函数组的Ｒｉｅｍａｎｎ边值问题的现有结论，给出了此问题的解法及封闭解．１问题的说明设Ｌ为复...     

一类具有混合非线性项边值问题解的结构

讨论了一类具有超线性及次线性结构的非线性算子方程解的结构，证明了解集存在连通分支．作为应用。讨论了一类边值问题解的结构，部分回答了Ambmsem所提出的问题．     

双解析向量函数及其边值问题

双解析向量函数及其边值问题赵达夫（北方交通大学教学系，１０００４４．北京）本文讨论双解析向量和复调和向量函数及一类半解析向量函数的某些性质，研究了它们的边值问题．定义１设Ｇ是平面上的区域，在Ｇ上给定了复向量函数ｗ（Ｚ）。ｔ肌（Ｚ），ｍ（Ｚ），…，－－...     

四元素线性共轭边值问题

四元素线性共轭边值问题杨巧林，王传荣（扬州大学工学院，２２５００９，江苏扬州）（福州大学数学系，３５０００２，福建福州）本文讨论了四元素线性共轭边值问题（ｌ），借助于有理逼近和压缩映像原理，得到了（ｌ）的解，并讨论了可解性条件和解的个数．设Ｐ是单位圆...     

多复变函数的Riemann边值问题的进一步讨论

多复变函数的Ｒｉｅｍａｎｎ边值问题的进一步讨论王莉萍（青岛海洋大学应用数学系，２６６００３，山东青岛）本文讨论了多圆柱区域上。元解析函数的Ｒｉｅｍａｎｎ边值问题在一定条件下的可解性，并给出了上述边值问题解的积分表达式．设ｃ（ｊ＝ｌ，…，ｎ）是Ｚ；平面...     

超解析函数一类混合边值问题

超解析函数一类混合边值问题张朝晖（北方交通大学教学系，１０００４４，北京）作者：男，１９６７年生，讲师，研究偏微分方程的理论及边值问题．（责任编辑杨金华责任校对马健）ＯＮＡＭＩＸＥＤＢＯＵＮＤＡＲＹ－ＶＡＬＵＥＰＲＯＢＬＥＭＦＯＲＨＹＰＥＲＡＮＡＬＹ...     

关于线性共轭边值问题

关于线性共轭边值问题王传荣（福州大学数学系，３５０００２，福建福州）设封闭的Ｌｙａｐｕｎｏｖ曲线Ｌ把复平面分割为Ｄ“和Ｄ－，ＯＯ６Ｄ－，ｄｉ“（ｔ）和ｄｉ－（ｔ）分别表示关于厂的分片解析函数中（Ｚ）在厂的内、外边界极限值．１９４６年Ａ１１ＭＩＰ。）Ｉ...     

一类二阶时滞微分方程边值问题的正解

讨论一类二阶时滞微分方程边值问题{u″＋λf（x,u（x-）τ）=0,0＜x＜1,u（x）=0,-τ≤x≤0,u（1）=0,其中τ〉0，参数λ〉0．利用Krasnosel’skii不动点定理，得到了这类问题正解存在与不存在的充分条件．推广了文[7]关于时滞微分方程边值问题的工作．     

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