查询词典 analytic method

Then in order to exploring the single-particle resonant states, we discuss the analytic continuation in the coupling constant method, the stability and convergence of energies and width calculated by ACCC method are studied.

接下来又详细的介绍耦合常数解析延拓方法，并且讨论了ACCC方法的理论依据以及实现ACCC方法的数学工具——Padé逼近。

The contents of trace elements of Ag, Cu, Zn, Fe, Pb, Sb and Bi in gold foil were determined directly by ICP-AES method and the gold content of gold foil was calculated. The authors obtained optimal working parameters of the instrument and studied the selections of power in analytic conditions and analytic curve, the optimization of the pressure of nebulizer as well as the influence of lifting capacity of the sample.

摘 要：研究了ICP-AES法直接测定金箔中的Ag、Cu、Zn、Fe、Pb、Sb、Bi微量元素，通过差减法计算出金箔的含金量，确定了仪器最佳工作参数，研究了分析条件中功率的选取、分析线的选择、雾化器压力的优化、样品提升量的影响，并对金箔中Au基体可能存在的干扰等进行了探讨。

The analytic studies of the MITA procedure based on dynamics and the function of thermo-diffuse and thermo-conduction combine these three physic field systematically. Compared with situation function with thermo-balance method, the analytic studies based on dynamics have less parameters approximation, and more precision. Meanwhile, the discipline of the microwave energy absorbed by tissue is should studied also.

基于动力学和热扩散、传导方程的微波热致超声波机制解析解的分析，将上述三类物理场有机地结合在了一起，与基于热平衡的状态解析分析相比，这一方法更少地对三物理场所涉及的参数进行近似，能更准确地反映微波热致超声波机制。

The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

文中对汽车碰撞安全性的设计理论和方法进行了归类和总结，其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等；重点介绍了碰撞有限元法的基本理论和有关算法，涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等，探讨了有限元计算中的材料模型参数获取技术，开发了相应的材料试验装置及材料模型参数反求软件，在此基础上进行了基本的碰撞仿真算例和试验对比研究；文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性，指出了设计薄壁吸能构件时需要考虑的几个主要影响因素，即焊点、壁厚、横截面和预变形等；在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究，提出了吸能转向机构和自适应安全气囊的仿真研究方法；文中最后探讨了整车碰撞性能的设计与改进方法，提出了以理想碰撞特性为目标，采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法，并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究，所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车，研究结果表明，本文所提出的设计与改进方法是适用而有效的，具有重要的工程实用意义和价值。

In this paper, Galerkin method is employed. First, test functions to satisfy natural boundary conditions are selected. Then the approximate analytic formulations of the system frequency are derived. Meanwhile the approximate analytic formulation of the limit velocity is got.

采用直接法，首先选取满足自然边界条件的试函数，而后求出了系统固有频率的近似解析公式，同时也得到了极限流速的近似解析公式。

Because traditional finance subject utmostly canonize the rational selected mode and methodology which keep the form of the financial interest need of the enterprise and its stockholders and the network of their financial relationship out of its analytic area, so liking the mainstream economics, traditional finance subject can not offer trustworthy explains to many financial affairs and can not prescribe the right policy prescription to the important financial problems, either. As a result of the logistic and realistic errors in the traditional mode, it will have an important and practical meaning to bring the new system principle into the analytic area of the financial subject and to develop the financial theory. The main points of this dissertation are as follows: The financial affairs of an enterprise are not the inner actions of the individual firm, but the function of the financial network of stockholders, so we should use the limit of the affairs not the inner property or inner driving force to interpret the financial affairs of an enterprise, we should use the method of circuital analysis not of individual analysis to investigate the financial affairs of an enterprise; The financial affairs of an enterprise is a social behavior, it is involved in the social structure and is restricted by the social structure, so we should care for the social characters, social responsibilities and social effects of the financial affairs of an enterprise; The financial network of stockholders is composed of five phases as follows: the finance of external stockholders, the finance of the operator, the finance of function, the finance of subsection and the finance of the stuff, in which the finance of the operator is dominant; The operational intensity and efficiency of the financial network of stockholders are influenced by technical factor as well as institutional factor, in which institutional factor is the fundamental character of financial affairs. Ultimately the substance of the financial affairs is the arrangement and operation for the financial system by stockholders; The relationship between enterprise and its stockholders is cooperative and conflicting. The important mechanism to solve the financial conflict between stockholders is the construction of the financial system, including the formal and informal system construction. Information and faith are the important mechanism to coordinate the financial conflict between stockholders, so we should pay much attention to the research of formal and informal system.

本文的主要观点是：企业财务行为不是企业个体内部的行为，而是利益相关者财务网络行为，因此应当用对行为的结构限制而不是企业个体的内在属性或内在驱力来解释企业的财务行为，用网络分析的方法而不是个体分析的方法研究企业财务行为；企业财务行为是一种社会行为，它嵌入于社会结构之中，受企业财务所处的社会结构的限定，因此应当关注企业财务行为的社会性质、社会责任和社会后果；利益相关者财务网络内含外部利益相关者财务、经营者财务、职能财务、分部财务和员工财务五个层次，其中经营者财务在其中占据主导地位；利益相关者财务网络的运作强度与运作效率既受技术性因素的影响，又受制度性因素的影响，其中制度性是财务的根本属性，企业财务的实质说到底还是面向利益相关者的一种财务制度性的安排与运作；企业与利益相关者之间以及利益相关者相互之间的财务关系具有合作性与冲突性，化解利益相关者财务冲突的重要机制是财务性的制度建设，包括正式制度建设与非正式制度建设，信息和信任是协调利益相关者财务冲突的重要机制，因此应当高度关注财务的正式和非正式制度的研究。

The governing equation of in-plane vibration of cable-restraint system is derived by means of D'Alembert principle, and then those partial differential equations are transformed into a set of ordinary differential equations by Garlerkin method. The method of Runge-Kutta integration is applied to solve the equation. The simulation analysis is made to prove that this vibration control has obvious damping effects and then the influence of cable tension, support mass, natural frequency and spring stiffness on the damping are discussed. Eventually, the approximate analytic solution of the optimum damping parameter is obtained to provide a simple and effective reference and design method for the engineers.

通过D'Alembert原理建立拉索－弹性约束系统振动方程，通过Galerkin方法将偏微分方程转化为常微分方程，应用龙格－库塔积分法求解方程；经过仿真分析，验证了该振动控制具有明显的减振效果，并且讨论了初始拉力、支座质量、振动频率及弹簧刚度对减振效果的影响；最后给出了计算最优阻尼参数的近似解析式，为工程师提供了简便有效的参考依据及设计方法。

There are two kinds of method in common use. One is numerical method, and the another one is analytic approximation which is represented by perturbation method.

常见的方法有两种：一种是数值方法，二是以摄动法为代表的解析近似法。

Finally, the author summarizes and makes a comparison of the Fuzzy Synthesizing Evaluation Model method ^ Coalescent Evaluation Model method and the Analytic Hierarchy Process method.

其次，对企业技术创新能力评价方法进行综述和评析，确定以数学模型综合评价作为本文评价企业技术创新能力的方法，并构建了企业技术创新能力的评价指标体系。

The inconsistency of judgment matrixes, great difference of relative weights and other problems often arise during screening evaluation index by AHP. To solve these problems, a new AHP method is presented by combining the weight vector rang estimation analytic theory with traditional evaluation index rejecting method. Finally, an example of deciding a evaluation index system for submarine pipeline engineering project is given and the result proves that the method is effective and feasible.

针对用层次分析法进行评价指标筛选过程中经常出现比较矩阵不一致、相对权重值差别较大等问题，将权重向量区间估计分析理论与传统的评价指标剔除方法相结合，提出了一种新的AHP评价指标筛选方法，并以海底管道工程方案评价指标体系的确定为例进行了实际应用，结果表明该方法具有较强的实用性和可操作性。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。