查询词典 theory of evolution

The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5～6倍的平均粒径，首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性，发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化，通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分，观测到接触面受剪时表现出明显的相对法向位移，并可分解为可逆性和不可逆性两个分量；(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型，并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性；(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析，比较了不同接触面本构模型对计算结果的影响，证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性，还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

Aiming at the chaos complexity activities which may occur during the evolution process of mining area ecosystem, we emphatically analyze the application of associated dimention judgment method and Lyapunov factor analytic approach based on phase space restructuring technique. We can ascertain whether mining area ecosystem have chaos characteristic or not according to these methods. It has important theory value for complexity research of mining area ecosystem.

其次，针对矿区生态系统演变过程中可能出现的混沌复杂行为，基于相空间重构技术我们重点分析了关联维数判断法和Lyapunov指数分析法的应用，依据这些方法，我们可以定量的判断矿区生态系统是否具有混沌特性，这对于我们进行矿区生态系统的复杂性研究具有重要的理论价值。

However, this mode could not answer the challenges faced by modern organizations. In the light of Chinese traditional culture, system views, and organization research, we develop HeXie Management Theory, and its control thought of combining rational design and environment enabled autonomous evolution to realize HeXie theme. A conceptual model is established upon this thought.

借鉴中国传统哲学、系统观和组织研究等相关成果发展起来的和谐管理理论，其"围绕和谐主题通过理性设计和环境诱导下的自主演化相结合的控制思想"为现代组织管理应对挑战指明了方向，并基于此给出和谐管理控制的概念模型。

Based on modern optimization theory and optimal control theory, this dissertation studies some questions as follows:1. The optimization model of parameter identification of three-dimensional geologic history numerical simulation, algorithm and its applicationGeologic history numerical simulation is a basic content of basin numerical simulation, and the porosity is the major parameter in the evolution and development process of oil-bearing basin. According to the sedimentation and burial mechanism, the physical and chemical principles of oil geology, the mudstone porositys non-linear parabolic partial differential equation has been established.

本文应用现代最优化及最优控制理论，对如下一些问题进行了研究： 1、三维地史数值模拟的参数辨识优化模型、算法及应用地史模拟是盆地数值模拟的一个基础性的研究内容，地层孔隙度是含油气盆地地史演化发育过程中的重要参数，根据地层沉积埋藏机理和石油地质的物理化学原理，通过引入数学物理方程概念，建立了泥岩三维孔隙度场方程，根据问题的特点，给出了方程的定解条件，对方程的动边界也给出了处理方法，并且证明了解的存在性与惟一性，在此基础上建立了以当今实测数据为拟合准则的三维地史数值模拟的参数辨识优化模型，这是一个含有二阶偏微分方程约束的泛函极值问题。

Contents: A Brief Review of Elementary Quantum Chemistry; An Introduction to Electronic Structure Theory; The Born-Oppenheimer Approximation; Time Evolution of Wavefunctions; Angular Momentum Summary; The Unitary Group Form of the Hamiltonian; Introduction to Hartree-Fock Theory; Permutational Symmetries of Integrals; Notes on Excited Electronic States; The Quantum Harmonic Oscillator; Assigning Symmetries of Vibrational Modes; Notes on Elementary Linear Algebra

内容： 初等量子化学的简评；电子结构理论的介绍；天生奥本海默的接近； Wavefunctions的时间演化；角动量摘要； Hamiltonian的单位的组形式；哈特里-Fock 理论的介绍；积分的Permutational对称性；在令人激动的电子国家上注明；这台量谐波振荡器；分配振动的方式的对称性；在初等线性代数上注明

Graidia lamblia Stile is a kind of organism that have a special significance in evolution.It was thought to be a living fossil that is a evidence of the endosymbiotic theory--a theory about the origination of eucaryotes.

中文摘要：蓝氏贾第鞭毛虫是一种在进化上具有特殊意义的生物，它被认为是证明真核生物的内共生起源学说的活化石。

This paper stresses summarizing and generalizing Marxs theory on need in retrospecting evolution of theory on need.

这是讨论需要全面性的理论依据。

The first part is an introduction, the main problem is to study and review; the second part is the system"s concept and the inquiry system"s historical evolution: the system"s connotation and the type activities division of letter and visit. The third part is the elementary theory : the system of letter and visit"s basis of the existence of china、the system of letter and visit functionas as well as the positioning function; The fourth part is the difficulies position and the reason analysis of the system of letter and visit under the background of social transformation; The fifth part is the imposible pathes of the rule of law choses in the transition period of letter and visit; the six part is the ending.

第一部分是绪论，主要是问题的提出和研究综述；第二部分是信访制度及其在中国发展的历史回顾：信访的内涵以及信访活动的类型划分、信访制度在中国发展的历史回顾；第三部分是信访制度的基本理论即信访制度在中国存在的基础、信访制度的功能以及功能的定位；在弄清以上两个问题特别是信访制度功能定位的基础上第四部分分析转型时期信访制度所面临的困境以及原因；第五部分是转型时期信访制度法治化的可能路径选择；第六部分是结束语。

If we make a study upon contemporary Chinese literary theory in terms of its fifty-year evolution, we will realize that contemporary literary theory have undergone three important changes.

如果对当代中国文艺理论 50年来范式的转换作一番动态考察，就会发现当代文艺理论经历了三次重大理论范式的演变。

This paper discusses the historical evolution of management communication theory and its development,summarises the characteristics of management communication theory on different stages and its development.

通过对不同时期管理理论发展的研究，综述了管理沟通理论的历史演变与发展，总结了不同阶段管理沟通理论的特征，以及管理沟通理论的发展趋势。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐