查询词典 approximation theory

The concepts to be introduced include, but are not limited to, the random phase approximation, the mean field theory (aka saddle-point, or semiclassical approximation), the tunneling dynamics in imaginary time, instantons, Berry phase, coherent state path integral, renormalization group..

这些方法主要涉及如无规相近似、平均场理论(aka 鞍点或半经典理论)、虚时间中的隧道动力学、瞬子、贝里相、相干态路径积分及重整化群等概念。

In the framework of the density functional theory, the structure of the α modification of zinc diphosphide (α-ZnP2) at the pressure from zero to 40 GPa is investigated by using molecular dynamics simulation, in which both the local density approximation and the generalized gradient approximation are employed.

利用密度泛函理论，分别采用广义梯度近似和局域密度近似对α-ZnP2在0~40GPa范围内的结构进行相关的分子动力学模拟，得到了它的压强-体积关系。

Based on conventional fuzzy control theory, an analysis of triangular partition fuzzy control is given to present several properties of TPFC: the fuzzy approximation mechanism, the approximation accuracy, entropy equalization, zero-error reconstruction and interpolative reasoning.

在研究经典模糊控制的基础上，本文分别从近似机理、精度分析、等熵设计、无偏差重构以及插值推理等不同角度对三角划分模糊控制进行了较系统的分析与研究，得出了用于HIFC设计与学习的一些重要结论。

The approximation solution of the biomathematical model of muscular blood vessel under the condition of the nonresonant case is obtained. The expansion method for two variables of perturbation theory is used and the approximation solutions are given to the biomathematical model of muscular blood vessel under two cases.

求得了具有小阻尼、硬外激励的肌型血管生物数学模型在非共振情形下的一次近似解，并利用两变量展开法，经方程演化，求得了具有小阻尼、弱外激励的肌型血管生物数学模型在非共振和共振两种情况下的首次渐近解。

The study of direct and inverse theorems on the approximation of linear operators to functions in normed linear spaces is an important subject in the approximation theory.

线性算子对赋范线性空间中函数逼近正逆定理的研究是逼近论中重要的研究课题之一，在理论和实际应用上都具有重要的意义。

This chapter sums up five aspects of theory bases of constitutional review system:(1) theory of supreme of constitution,(2) theory of limited government,(3) theory of check and balance of power,(4) theory of sovereignty of people,(5) theory of rule of law.

第一节简要回顾了我国宪法监督制度从无到有的四个历史阶段，第二节分析了我国现行的宪法监督制度所存在的主要问题，第三节探讨了我国的违宪审查制度为何难以建立起来的理论障碍、思想障碍和法律障碍。

This paper first summarizes the existing western economic explanations on corporate diversification, such as scope economy theory, resource-based theory, defense hypothesis, market power theory, transaction cost theory, internal capital market theory, coinsurance hypothesis, and agency theory. Then according to the situation in China, the paper discusses another explanation proposed by domestic scholars, i.e.

本文首先归纳了西方现有对企业多元化动因的八种经济解释（范围经济理论、资源依赖理论、防御假说、市场力量理论、交易成本理论、内部资本市场、债务互保假说与代理理论），并针对国内情况分析了国内学者提出的市场分割假说。

Other semirings arise naturally in such diverse areas of mathematics as combinatorics, functional analysis, topology, graph theory, Euclidean geometry, probability theory, commutative and noncommutative ring theory, optimization theory, discrete event dynamical systems, automata theory, formal language theory and the mathematical modeling of quantum physics and parallel computation systems.

在许多不同的数学领域存在着其它形式的半环，比如组合学，泛函分析，拓扑学，图论，欧式几何，概率论，交换和非交换环，优化论，离散动力系统，自动化理论，形式语言理论，量子物理的数据模型和并行计算系统。

He integrated the ideological essence of Confucianism, Buddhism and Taoism, and used the " Natural kindniss " to express the Innateknowledge ontology, which composed his ontology theory ; He took this "Natural kindniss" as the basic of his theory, to pursue the Humanity realm which claim "One Unity of All Things" and the Easefulness realm which claim "free and easy", he thought both the two realms have the same mean, and finally proposed the theory of realm. On the Effort theoretically, Luo Jinxi emphasized "all lays down and breaks the unreal ontology theory", to fit the Natural kindniss in the just moment .He fused the Effort and the Ontology , which made the two together. As to the theory of "Awakening Oneself by discreet on One"s Own","The investigation of things" and "Filial piety and fraternalduty, Luo Jinxi also put forward an especial theory which made his thought into a perfect system and reached an extensive and proficient realm.

他融合儒释道的思想精华，用"赤子之心"来表述良知本体，构成其思想的本体论学说；并以此赤子良知为理论基点，追求"万物一体"之仁的境界与"生意活泼，了无滞碍"的洒脱之乐的境界，认为仁之境即是乐之境，乐之境即是仁之境，最终提出追求仁乐合一境界的境界论思想；在工夫理论上，罗近溪强调"放下一切、打破光景"，顺适赤子良知之当下状态，将工夫融释在良知本体中，即工夫即本体，即本体即工夫，表现出一种无工夫之工夫论；在关于慎独、格物、孝悌慈等论题上，近溪也提出了极具理论特色的观点，使其思想形成了一卓然圆熟的体系，达到了一"博通圆融"的境地。

This theory emerged from those philosophical and logical inquires Russell made in his early stage, when Russell use logical analysis to solve the semantics problem his meaning theory suffered. The foundation of the theory of descriptions is a theory of meaning, as this thesis presents, and its central notion includes two syntax rules. Based on the first order predicates calculus, this theory seems successfully solve some notable semantics problems and then assures Russell's denotation theory.

本文认为，摹状词理论有深刻的哲学渊源，它脱胎于罗素早期的哲学和逻辑研究，直接缘起于罗素想要利用逻辑的分析方法去解决意义指谓论所面临的语义学难题；摹状词理论的基础是它的意义理论，核心是两个句法规则，它基于带等词的一阶谓词演算成功地解决了一些著名的语义学难题，维护了直观的指谓论，从而产生了巨大而深刻的哲学影响。

Must have Coordination and negotiation skill, flexible ideas, and be punctilious person.

必须具备较好的协调与谈判能力，头脑灵活，工作认真仔细

Result: 18 patients are all with simple eye.The pigment mole lies in nasal and temple sides of the ball conjunctiva,in which 2 lie in lacrimal caruncle and semilunar plica.

结果：18例患者均为单眼，色素痣大多数位于内外侧睑裂部球结膜面，2例位于泪阜及半月皱襞，经激光治疗后，10例色素痣消失，有5例行再次激光后消失，2例行第三次激光后消失，1例第四次激光后消失。