存在的性质

In this thesis,based on the DFT+NEGF first-principles method,we construct a lead-molecule-lead sandwich system with single benzene-based molecule to investigate the relationship between the structure and properties of the molecular devices and the factors that influence properties of the molecular devices.Our computational investigations on these molecular devices are primarily concentrated on the effect of contact geometry between molecules and electrodes,the effect of side groups,the effect of different torsion angle between two phenyl rings and the effect of external electric field.This thesis consists of five chapters:In Chapter one,we mainly introduce the research background and development of the molecular electronics,including the experimental fabrication of molecular electronic components and theoretical simulation methods.Afterwards we discuss the questions that need to be solved in this area.Finally,the main contents of this thesis are listed.In Chapter two,we introduce the theoretical methods used in this thesis, including the main first-principles calculation methods,i.e.,the Density-Functionmethod and nonequilibrium Green\'s function.

本论文拟采用密度泛函理论和非平衡格林函数相结合的第一性原理计算方法，选取苯基小分子作为研究对象，构建了金属电极/有机小分子/金属电极三明治结构体系，系统地研究了苯基分子器件结构的改变与分子电输运性质之间的关系以及影响分子器件电输运性质的相关因素，其中重点研究了分子与电极间可能的接触结构改变、官能团、分子间的扭转角以及外电场对苯基分子电输运性质的影响，本论文主要包括以下五个章节的内容：第一章为综述部分，主要介绍了分子电子学产生的背景、分子器件的研究意义、当前研究分子器件的实验和主要理论方法，以及目前在研究分子器件中存在的一些问题，最后给出了本论文的主要研究内容和技术路线。

The students can't catch on the essence of the relationship between the atomic structure and the element properties, and they often mistake the element's properties for the atomic's.

对"原子结构与元素性质的关系"存在着各种糊涂的认识，往往将单质的性质误认为是元素的性质。

This article uses the implicit function theorem and the properties of analytic functions,with less limitations for the uniqueness,continuity,continuous differentiability of the implicit functions,and gets the sufficient and necessary conditions of the existence of implicit functions by simplifying them.

从常用隐函数存在性定理出发，放宽对隐函数唯一、连续、连续可微等性质的限制，利用解析函数的性质将其展拓，得到广义隐函数存在的充分必要条件和广义隐函数的分布特征。

This paper attempts to make recommendations, with a new view to the contract breach fine research, on the nature of contract breach fine should be compensation, punitive coexist, through the study of different national legislation on the different provisions of contract breach fine, combined with existing academic disputes, and the expurgation of confusion and false in the concept of contract breach fine.

本文试图通过对各国立法关于违约金性质的不同规定之考察比较，结合阐述学界对违约金性质所存在的争议，廓清违约金概念中的混乱与不实之处，对我国违约金性质应赔偿性、惩罚性并存提出建议，以期展现违约金问题研究的一个新视角。

The main contributions of the second part of this dissertation are focused on the cryptographic properties of logical functions over finite field, with the help of the properties of trace functions, and that of p-polynomials, as well as the permutation theory over finite field: The new definition of Chrestenson linear spectrum is given and the relation between the new Chrestenson linear spectrum and the Chrestenson cyclic spectrum is presented, followed by the inverse formula of logical function over finite field; The distribution for linear structures of the logical functions over finite field is discussed and the complete construction of logical functions taking on all vectors as linear structures is suggested, which leads to the conception of the extended affine functions over finite field, whose cryptographic properties is similar to that of the affine functions over field GF (2) and prime field F〓; The relationship between the degeneration of logical functions and the linear structures, the degeneration of logical functions and the support of Chrestenson spectrum, as well as the relation between the nonlinearity and the linear structures are discussed; Using the relation of the logical functions over finite field and the vector logical functions over its prime field, we reveal the relationship between the perfect nonlinear functions over finite field and the vector generalized Bent functions over its prime field; The existence or not of the perfect nonlinear functions with any variables over any finite fields is offered, and some methods are proposed to construct the perfect nonlinear functions by using the balanced p-polynomials over finite field.

重新定义了有限域上逻辑函数的Chrestenson线性谱，考察了新定义的Chrestenson线性谱和原来的Chrestenson循环谱的关系，并利用一组对偶基给出了有限域上逻辑函数的反演公式；给出了有限域上随机变量联合分布的分解式，并利用随机变量联合分布的分解式对有限域上逻辑函数的密码性质进行了研究；给出了有限域上逻辑函数与相应素域上向量逻辑函数的关系，探讨了它们之间密码性质的联系，如平衡性，相关免疫性，扩散性，线性结构以及非线性度等；讨论了有限域上逻辑函数各类线性结构之间的关系，并给出了任意点都是线性结构的逻辑函数的全部构造，由此引出了有限域上的"泛仿射函数"的概念；考察了有限域上逻辑函数的退化性与线性结构的关系、退化性与Chrestenson谱支集的关系；给出了有限域逻辑函数非线性度的定义，利用有限域上逻辑函数的非线性度与相应素域上向量逻辑函数非线性度的关系，考察了有限域上逻辑函数的非线性度与线性结构的关系；利用有限域上逻辑函数与相应素域上向量逻辑函数的关系，揭示了有限域上的广义Bent函数与相应素域上的广义Bent函数的关系，以及有限域上的完全非线性函数与相应素域上向量广义Bent函数之间的关系；给出了任意有限域上任意n元完全非线性函数存在性与否的完整证明，并利用有限域上平衡的p-多项式的性质给出了有限域上完全非线性函数的一些基本构造方法。

The main aim of this thesis is to study the properties of the maps for Heisenberg group target, which include Lipschitz and Holder continuity, L~#,H~(n , W~(1,p)#,H~(n , BMO and John-Nirenberg estimates, embedded theorems, Poincare inequalities and reverse Poincare inequalities, the regul-arities about the minimizers.

本文的主要目的是系统研究靶流形为Heisenberg群的函数及其空间的性质，其中包括Lipschitz及Hlder连续性、空间L~p及W~(1，p)的性质、空间BMO的性质及其上的John-Nirenberg估计、嵌入定理、Poincare不等式和逆Poincare不等式、能量极小映射的存在性、正则性及用调和函数逼近能量极小映射等问题。

Thus, on this line of reasoning, existence isn''t a great-making property because it is not a property at all; it is rather a metaphysically necessary condition for the instantiation of any properties.

因此在推理的这根线上，因为它根本不是一个性质，存在不是一个大做的性质；它是为任何性质的实例化的一个先验地必要的条件。

Naturalism is a philosophical position which holds that all that exists is natural - in other words, is part of the spatio - temporal processes of nature - or, that if any sort of nonnatural object may exist, it is known only through its effects within nature.

自然主义是一种哲学的立场，认为所有的存在是很自然的-换句话说，是部分的时空-时间过程的性质-或，如果任何形式的非天然的对象可能存在的，这是众所周知的，只有通过其效果的性质。

In this paper, the current research status on structural characteristics and decomposition mechanism of supersaturated sodium aluminate solution are reviewed.

本文对过饱和铝酸钠溶液中铝酸根离子存在的基本形态，浓度、苛性比和阳离子对铝酸钠溶液结构性质的影响，溶液中多种铝酸根离子平衡与转化规律，以及铝酸钠溶液分解机理研究的现状进行了总结和评述；分析了现有铝酸钠溶液结构性质与分解机理研究的不足；围绕强化氧化铝生产中铝酸钠溶液分解过程的目的，提出了铝酸钠溶液结构性质与分解机理研究的重点。

Is an expert to good expert the manner when colludes with with other people carries on the cheating, exists with the bank staff colludes with the implementation cheating the situation, in the current our country actual situation, the bank nature has the state-owned bank and difference the non-state-owned bank, therefore the author and the heterogeneity bank staff colludes with the implementation loan cheating the nature to be different, this article only colludes with the implementation on the author and the state-owned bank staff the behavior to make the discussion.

在行为人与他人勾结进行诈骗时，存在着与银行工作人员相勾结实施诈骗的情形，在当前我国实际情况下，银行的性质有国有银行和非国有银行之别，因此行为人与不同性质银行的工作人员勾结实施贷款诈骗的性质不同，本文仅就行为人与国有银行工作人员勾结实施的行为作探讨。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。