关于E^n中p维与q维超平面间的距离

设Ｅｎ中ｐ维与ｑ维超平面分别为πｐ：α１∧α２∧…∧αｐ∧（ｘ－ｘ０）＝０，πｑ：β１∧β２∧…∧βｑ∧（ｙ－ｙ０）＝０，｛γ１，γ２，…，γｔ｝是向量组｛α１，α２，…，αｐ，β１，β２，…，βｑ｝的一个极大线性无关组，则πｐ与πｑ间的距离平方为：ｄ２（πｐ，πｑ）＝｜δ０｜２－γ１δ０，…，γｔδ０［］γｉγｊ［］－１γ１δ０，…，γｔδ０［］Ｔ其中δ０＝ｘ０－ｙ０．     

关于一类二维奇异积分方程的唯一解

设Ｄ是一个边界Г∈Ｃ＾１ａ（０〈ａ≤１）的有界单连域,复函数ｑ（ｚ）∈Ｃ＾１ａ（Ｄ）,│ｑ（ｚ）│≤１,等积只能在Г上成立,且在Г上等式ｑ（ｚ（ｔ）ｚ’（ｔ）＋１│ｚ∈Г＝０最多在有限个点上成立,本文给出以满足上述条件的复伸张ｑ１（ｚ）及（ｑ２（ｚ）∈Ｃ＾１ａ（Ｄ）为系数的二维奇异积分方程ｗ（ｚ）＋ｑ１（ｚ）／ｎ√√ｗ（ｔ）／（ｘ－ｚ）＾２ｄσ＋ｑ２（ｚ）／ｎ√√ｗ（ｔ）ｄσｚ／ｔ－ｚ＝ｆ（ｚ）的     

广义Harper模型的量子扩散

研究了广义Ｈａｒｐｅｒ模型的量子扩散,分析了自关联函数Ｃ（ｔ）在不同哈密顿量参数区域的长时特征。结果表明,在金属区Ｃ（ｔ）－Ｔ＾－１,而在绝缘体区Ｃ（ｔ）－ｔ＾０。     

各向异性H^p（R^n）上的乘子定理

当ｔ〉０且１＝α１≤α２≤…≤αｎ，高Ａｔ＝ｄｉａｇ（ｔ＾αａ，…，ｔ＾αｎ）是＾Ｎ／｛０｝上各向异性连续变换群。当Ｌ＾∞（Ｒ＾ｎ）中的函数ｍ，以及适当选取的Ｃ＾∞０（Ｒ＾ｎ）中的函数η和任意的δ〉０，定义ｍδ（ξ）＝ｍ（Ａδ（ξ）＝ｍ（Ａδξ）η（ξ）。证明了当０〈ｐ〈１，γ＝Σ＾ｎｉ＝１αｉ且ｍδ属于各向异性的Ｈｅｒｚ空间Ｋγ（１／ｐ－１），ｐ１（Ｒ＾ｎ）时，ｍ是各向异性Ｈ＾ｐ（Ｒ＾ｎ）上的乘     

二维渗流临界状态连接函数的幂估计

本文对二维边渗流模型给出了临界状态时连接函数τＰｃ（ｏ，ｖ）的幂估计，即存在常数ａ＞０，Ｃ１＞０，Ｃ２＞０使得Ｃ１｜ｖ｜＾－１≤τｐｃ（ｏ，ｖ）≤Ｃ２｜Ｖ｜＾－ａ，这里ｏ＝（０，０），ｖ＝（ｖ１，ｖ２）∈Ｚ＾２，｜ｖ｜＝｜ｖ１｜＋｜ｖ２｜．     

一类半线性奇异发展偏微分方程的整体解

在空间Ｌ＾２（Ｒ＾ｎ）中考虑半线性奇异发展方程的哥西问题（Ｓ）｛ｔ＾ｏｄｕ／ｄｔ＋Ａｕ＝ｆ（ｔ，ｕ）ｌｉｍｕ（ｔ）＝０ｔ→ｏ＾＋０＜ｔ≤Ｔ在算子Ａ及函数ｆ（ｔ，λ）的某些假设下，证明了问题（Ｓ）在函数类Ｃ＾０（［０，Ｔ），Ｌ＾２∩Ｃ＾１（０，Ｔ），Ｌ＾２）中整体解存在。     

拟生双曲组某定解问题整体光滑解的存在性

讨论如下问题：δｒ／δｔ＋λ１（ｒ,ｓ）δｓ／δｔ＋λ２（ｒ,ｓ）δｓ／δｘ＝０,［ｆ（ｒ,ｓ）］ｘ＝ｘ（ｔ）＝Ａ（ｔ）,［ｒ－ψ（ｓ）］ｘ＝ｘ（ｔ）＝０,其中λ１（ｒ,ｓ）与λ２（ｒ,ｓ）是已知函数,ｘ＝ｘ（ｔ）是非特征曲线,Ａ（ｔ）＝ｄｘ／ｄｔ,ｆ（ｒ,ｓ）及ψ（ｓ）是已知的可微函数。求解区域是Ｈ＝［（ｘ,ｔ）│（ｘ〉ｘ（ｔ）,Ａ↓ｔ｝。在适当的假设下,文中采用速矢端变换,证明了上述问题的整体     

一个变系数热方程的初值问题的局部解的不存在性

本文在空间Ｃ（「ε０,Ｔ」,Ｌ＾ｐ）∩Ｃ＾１（ε０,Ｔ「,Ｌ＾内考虑边值问题 ｛δｕ／δｔ－１／ｔ＾αｕ＝│ｕ│＾ｒ－１ｕ ｔ〉ε０〉０ （１） ｌｉｍｕ ｔ ↓ε０（ｔ,ｘ）＝ψ（ｘ） ｘ∈Ｒ＾ｎ（２）其中γ〉１,ｐ≥１,ε０是一个固定的正数。在Ｌ＾ｐ内ψ（ｘ）≥０且不恒为零,α〉０,我们给出了问题（１）（２）有正解的一个必要条件,并研究了正解的不存在性。     

二阶复方型偏微分方程的函数论方法

本文讨论二阶复合型方程组（ＣＥ２）：［（１０１０）δ＾２／δｔ＾２＋（１０１λ／Ｒ＾２）δ＾２／δｘ１＾２＋（０（λ－ｋ＾２）／ｋ＾２（λ－１）／ｋ０）δ＾２／δｘ１δｘ２＋（λ００１）δ＾２／δｘ２＾１］（ｕ１ｕ２）＝０得到了该方程组有解的必要条件，并由此知道该方程组的Ｃａｕｃｈｙ问题是不适定的，转而讨论问题（Ｄ２），证明了问题（Ｄ２）是可解的，并给出了解的表达式。     

苯基氮杂-15-冠-5-八钼多酸钠超分子配合物的结构与热分解

本文对新型超分子配合物［Ｎａ（ＮＰｈ）１５Ｃ５（Ｅｔ２Ｏ）］２Ｎａ２Ｍｏ８Ｏ２６进行了Ｘ射线四园衍射测定,该晶体属单斜晶系,空间群为Ｐ２１／ｃ,ａ＝１７８０３（４）,ｂ＝１３６７４（３）,ｃ＝１４６１０（３）,β＝１１２３３（２）°,Ｖ＝３２９０（１）ｎｍ３,Ｍｒ＝２０２１３,Ｄｃ＝２１４ｇ／ｃｍ３,μ＝１７１ｍｍ－１,Ｆ（０００）＝２０７９６３,Ｒ＝００２５６和Ｒｗ＝００２９５,并联系差热热重分析和１ＨＮＭＲ实验,讨论了配合物的热分解过程．     

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