广义正交小波包

本给出一种任意伸缩矩阵正交小波包构造方法．该小波包是以频域形式给出的，献[1]所给小波包仅是其一特例．这样所得的小波包使得L^2(R^s)中小波基的选择更灵活，最后给出算例．     

高维不可分双正交多小波包

首先，给出了对应于多重多分辨分析的双正交多小波包的定义，建立了具有任意矩阵伸缩的双正交多小波包的理论框架．在此基础上，给出了具有任意矩阵伸缩的高维不可分双正交多小波包的构造方法．由此构造的多小波包的分解系数可以从不同的滤波器中抽取．这使得小波包的应用更灵活．     

一类任意矩阵伸缩双向向量值小波包

本文给出了双向向量值多分辩分析和具有矩阵伸缩的高维双向向量值小波包,研究了高维双向向量值小波包的性质,得到了矩阵伸缩的双向向量值正交小波基.     

具有矩阵伸缩的双正交向量值小波包

文章讨论了具有矩阵伸缩的高维双正交向量值小波包的构造及其性质,得到了向量值函敷空间L~2(R~(?),C~r)的新的Riesz基.     

高维双正交向量小波包

利用线性代数方法研究了矩阵伸缩的高维双正交向量小波包,并给出了L2(Rs)上非张量积双正交向量小波包基.     

一类矩阵伸缩框架小波包的构造

基于正交小波基的小波包在理论及应用上已经得到广泛的研究,但是对框架小波包的研究甚少.通过框架小波包,不但可以根据信号的特征选取不同的小波框架,而且还可以对信号的不同频率带进行分析和处理.Lu和Fan从Ron和Shen提出的酉延拓原理出发,构造出L~2(R~d)的一类具有2Id-伸缩的紧框架小波包.本文从Ron和Shen提出的酉延拓原理出发,利用Daubechies给出的分裂算法,将上述2Id-伸缩矩阵的结果推广到一般伸缩矩阵,给出了一类具有矩阵伸缩的框架小波包的构造方案,并利用该构造方案,构造出L~2(R~d)的一类框架小波包.     

高维向量值正交小波包的性质

研究了高维向量值小波包的构造与性质,引进了数量矩阵伸缩的高维向量值小波包的概念.运用有限群理论和算子理论与积分变换,讨论了它们的性质,得到了高维向量值小波包的正交公式.利用高维向量值小波包的正交性,构造了空间L2(Rs,Cr)的新的正交基.     

一类矩阵值小波包的刻划

推广了正交小波包的概念.给出一类矩阵值正交小波包的定义及其构造,讨论了矩阵值正交小波包的性质,由矩阵值正交小波包得到了空间L2(R,Cs×s)的一个新的正交基.     

矩阵值双正交小波包基

研究矩阵值小波包的性质.给出一类矩阵值双正交小波包的定义及构造.运用时频分析方法与算子理论刻划了矩阵值双正交小波包的特性,得到了矩阵值小波包的双正交公式.进而,得到矩阵值函数空间L2(R,Cr×r)新的Riesz基.     

紧支撑多元向量值小波包的正交性

给出数量矩阵mIr(2≤m∈Z)伸缩的多元向量值小波包的定义及其构造方法.运用代数学理论,算子理论与时频分析方法,讨论多元向量值小波包的正交性,得到多元向量值小波包的正交公式.     

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