查询词典 equilibrium principle

The local and global stabilities are examined. The possibility of existence of a bionomic equilibrium is considered. The optimal harvesting policy is studied by using Pontryagin's maximal principle.

证明了系统的局部稳定性、全局稳定性和生态经济平衡点的存在性，最后得到最优的捕获策略。

The fluid film bearing-flexible rotor nonlinear system with squeeze film damper is modeled practically using the finite element method and the Hamilton principle.(3) The film forces produced by fluid film bearing and squeeze film damper are determined by finite element method at any moment, and the Jacobian matrix is also determined.(4) A method for analyzing the dynamics of a large system with local nonlinearities is presented. The stability and bifurcation of the equilibrium position and the unbalance responce of a fluid film bearing-flexible rotor system with squeeze film damper are investigated based on the assumption of an incompressible lubricant together with the long bearing approximation for fluid film bearing, short bearing approximation for squeeze film damper and the"π"film cavitation model.

主要研究内容包括下面几个方面：（1）对挤压油膜阻尼器-滑动轴承-转子非线性动力系统中的非线性现象进行了机理方面的研究；（2）应用有限元方法及Hamilton原理对复杂的挤压油膜阻尼器-滑动轴承-转子非线性动力系统进行了建模分析；（3）对滑动轴承及挤压油膜阻尼器中任一时刻的油膜力及相应的Ja-cobi矩阵的确定进行了分析；（4）对一类具有局部非线性的多自由度动力系统，提出了一种可以有效地分析其动力特性的方法；（5）采用实验与理论分析相结合的方法，对挤压油膜阻尼器-滑动轴承-转子非线性动力系统的动力特性进行了分析。

Based on the variational principle of initial post-buckling theory, the neutral equilibrium equation of the arch under uniform compression is derived.

基于初始后屈曲理论的变分原理，导出了圆拱在均匀压力作用下弹性失稳的中性平衡方程，并计算了圆拱反对称屈曲的临界压力，得到了与经典解一致的结果。

The variational principle of generalized potential energy is used to determine the unknown coefficients of above series. The distributions of transversal shearing and normal stresses obtained from constitutive equations and those from equilibrium equations agree with each other very well.

通过这部分的分析，得出了一个重要结论：根据该分析方法，由平衡方程与由物理方程得到的横向剪应力及横向正应力分布相当一致。

Afterward, we analyze four possible paths using Pontryagin 's maximum principle, We obtain optimal control rules of two advertising expenditure and the long-run optimal equilibrium solution of this model.

然后，利用庞特里亚金最大值原理对四种可行路径进行分析，分别得出了两种广告支出的最优控制规律与该模型的长期最优均衡解，并研究了长期最优均衡解的渐近性态。

The first part includes demand, supply and equilibrium analysis, its also covers the principle of welfare economics and collective choice.

课程的第一部分为基础理论部分，讲述微观经济学中需求、供给、平衡的基础知识，以及福利经济学和集体决策的基本原理。

The basic principle of the "equilibrium of interests" of the copyright system has therefore affected.

互联网的发展对著作权制度造成了极大的冲击，著作权制度"利益平衡"的基本原则受到了影响。

Theoretical formulae are derived from using the cuneafe model and principle of limit equilibrium, and consequently, the equations for practical computation are established.

根据楔形体模型及极限平衡原理推导出理论计算公式并建立了实用的计算公式，计算结果与实验符合良好。

According to economic and minimum of transaction cost principle, we must try hard to seek equilibrium of supply among government, market and Non-profit organization and establish diversification of institution arrangement and polycentric system of provision of public goods and public-private rivalship and partnership so as to achieve social optimization of supply of public goods and to meet people's needs and realize public interests.

根据资源优化配置的经济合理性原则和交易成本最小化原则，努力寻求政府、市场和非营利组织在公共物品供给领域的均衡点，构建公共物品提供的政府、市场、非营利组织复合型制度安排与公共物品供给的多中心体制和互补机制；建立政府与市场、政府与非营利组织的竞争——合作伙伴关系，以达到公共物品供给的社会整体最优，满足人们需要、实现公共利益。

According to the principle of thermal equilibrium and considering the complexity of combustion system a new standpoint of representing coal-measurement by heat signal is put forward. Then a self-searching optimal control method for enhancing thermal efficiency is obtained through the optimal wind-coal ratio. Then a computer control system for economic combustion in coal-fired boiler is designed.

通过实现燃煤锅炉最佳风煤比，得出提高锅炉热效率的自寻优控制方案，设计出了用于燃煤锅炉经济燃烧的计算机控制系统。，提出了一种最优控制方案——效率自寻优方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。