对数指数平均的Hlder,Minkowski,Tchebychef型不等式

借助于有关积分不等式,证明了对数平均、指数平均的与H lder不等式、Minkowski不等式、Tchebychef不等式相类似的不等式.     

Jensen不等式及其应用

根据Jensen不等式，引出平均值不等式、Holder不等式、Cauchy不等式的积分形式.     

关于推广Radon不等式的一个结果及应用

利用H lder不等式、W.H.Young不等式、幂平均不等式建立Radon不等式的指数推广形式,得到一个具有广泛应用价值的不等式.指出文[6]中给出的关于Radon不等式的推广结果是错误的,并在本文中作了修正.     

某些有趣矩阵不等式

关于对称半正定矩阵和m-矩阵存在许多经典的矩阵不等式,如Hadmard不等式、Fischer不等式、Oppenheim不等式等.这些不等式在数值分析及其它领域有很重要的应用.本文旨在推广关于对半正定矩阵成立的Oppenheim不等式,证明几种关于对称半定矩阵、一般M-矩阵和逆M-矩阵成立的Oppenheim型不等式,作为Oppenheim不等式的推广,这些不等式在理论上和应用上都是具有意义的.     

对数指数平均的Hzolder，Minkowski，Tchebychef型不等式

借助于有关积分不等式，证明了对数平均、指数平均的与Holder不等式、Minkowski不等式、Tchebychef不等式相类似的不等式．     

若干三角形不等式在四面体中的推广

给出Neuberg不等式、Polya-Szego不等式、Finsler-Hadwiger不等式、Euler不等式及一组三角不等式在四面体中的推广。     

若干重要积分不等式的等价性

给出了几何平均值与算术平均值不等式、cauchy不等式、Чебышев(切比雪夫)不等式、Н lder不等式、Ляпунов(利雅普诺夫)不等式、三角不等式和Minkowski不等式的积分形式并证明了它们之间的等价性,证明了它们τ2(x)dx>0,其中τ(x)是区间[a,b]上任一正值连续函数.等价于∫ba     

Jensen不等式及其应用

根据Jensen不等式 ,引出平均值不等式、Holder不等式、Cauchy不等式的积分形式     

若干三角形不等式在四面体中的推广

给出Neuberg不等式、Polya—Szego不等式、Finsler—Hadwiger不等式、Euler不等式及一组三角不等式在四面体中的推广.     

几个三角形不等式的加强

本文给出了Neuberg—Pedoe不等式、Euler不等式、Weitzenboeck不等式三角形内常见不等式的加强。     

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