双线性Calderón-Zygmund算子交换子在Triebel-Lizorkin空间上有界的充分必要条件

讨论了双线性Calderón-Zygmund算子相关问题,证明了其与b1,b2生成交换子从乘积Lebesgue空间到Triebel-Lizorkin空间有界的充分条件是b1,b2为Lipschitz函数.同时证明了Calderón-Zygmund算子交换子从乘积Lebesgue空间到Lebesgue空间、Triebel...     

带Dini核的多线性Calderón-Zygmund算子及其交换子的一些估计

建立了带Dini核的多线性Calderón-Zygmund算子从广义多范数Morrey空间到广义Morrey空间的一个更加精确的估计,得到带Dini核的多线性Calderón-Zygmund算子与BMO函数生成的交换子及迭代交换子是有界算子.     

Calderón-Zygmund奇异积分算子在变指数Herz型Hardy空间的有界性

设Ω∈L~s(S~(n-1))(s1)是零度齐次函数,T_Ω是Calderón-Zygmund奇异积分算子.证明了Calderón-Zygmund奇异积分算子T_Ω及其交换子从变指数Herz型Hardy空间到变指数Herz空间上的有界性.     

Calderón-Zygmund算子与交换子在非齐度量测度空间上Morrey空间中的有界性

用函数分解及几何双倍条件和上双倍条件方法,得到了Calderón-Zygmund算子及其与RBMO(μ)函数生成的交换子在非齐度量测度空间上Morrey空间中的有界性;并且当p=n/β时,证明了Calderón-Zygmund算子与Lipschitz函数生成的交换子是从Morrey空间到RBMO空间有界的.     

Herz型Hardy空间上一类交换子的有界性

奇异积分理论特别是Calderón-Zygmund算子广泛应用于偏微分方程及其它相关领域的研究.本文证明了交换子[b,T]在齐次Herz型Hardy空间上的有界性,其中b∈Lipβ(Rn),T为δ-Calderón-Zygmund算子.     

Calderón-Zygmund算子与Campanato函数生成的交换子在非齐度量测度空间上的有界性

在一个满足上双倍条件和几何双倍条件的非齐度量测度空间上，利用非齐度量测度空间上Herz型Hardy空间的原子刻画，借助于Calderón-Zygmund算子在L^p空间上的有界性理论，在非齐度量测度空间上证明了Calderón-Zygmund算子与Campanato空间中函数生成的交换子从Herz型Hardy空间到Herz空间的有界性.     

Dini型多线性Calderón-Zygmund算子在Herz型Hardy空间上的有界性

为了研究Dini型多线性Calderón-Zygmund算子在Herz型Hardy空间上的有界性,通过对空间进行环状分解,利用中心原子对Herz型Hardy空间进行特征分解,再利用原子的消失性条件得到衰减估计,从而叠加得到结论。证明了当■时,Dini型多线性Calderón-Zygmund算子是从Herz型Hardy空间到Herz空间是有界的。     

一类振荡奇异积分算子在加权Herz空间的有界性

对于一类具 μ-Calderón-Zygmund核的振荡奇异积分算子，已经得到了它的Lp（Rn）（1〈p〈∞）有界性，并且利用权函数的性质，又证明了它的加权Lp有界结果。这里借助于Herz空间的分解理论，证明了此类推广的具 μ-Calderón-Zygmund核的振荡奇异积分算子在非齐次加权Herz空间的有界性。     

Calderón—Zygmund型算子交换子在加权Herz型Hardy空间上的有界性

本文主要讨论了Calderón-Zygmund型算子交换子在加权Herz型Hardy空间上的有界性。     

一类交换子在某些新函数空间的有界性

引进了一类相关Herz空间的新函数空间,并证明了Calderón-Zygmund算子与LMO(Rn)函数的交换子在这些空间上的有界性.     

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