理论上

Complexity theory is the study of tractability by computer; some problems, although theoretically solvable by computer, are so expensive in terms of time or space that solving them is likely to remain practically unfeasible, even with rapid advance of computer hardware.

复杂性理论是研究tractability计算机；一些问题，虽然理论上可解的电脑，如此昂贵的在时间或空间，解决他们可能仍然几乎不可行的，即使有迅速发展的计算机硬件。

The structure beam response control method based on the traveling wave model was discussed theoretically. The theoretical traveling wave model was applied to a long thin beam with piezocrystal actuators and the traveling wave active control law for the condition of making measurement upstream and performing control downstream was derived and the control compensator formula of the flexural waveguide in the form of transcendental function was deduced.

从理论上探讨了基于行波模型的结构梁响应控制方法，在梁及压电陶瓷作动器处采用行波理论模型，导出了上游测量、下游点施加控制的行波主动控制律及相应的具有超越函数形式的控制补偿器表达式。

There are many problems in school art education in our country, eg. the unhealthiness of administration, lack of teaching instruments and teachers, and insufficient art classes, etc, but these are the ones which are difficult to be tackled with by theory reachers. So the article focuses on the guiding conception and teaching theory of school art education.

目前我国中小学艺术教育中存在的问题很多，如管理机构不健全、教学设备奇缺、师资缺额大、开课率低等，但这些大都是理论工作者无法驾驭和难以解决的问题，为此，本文的着重点将放在中小学艺术教育的指导思想和教学理论上。

With the theory system unintegrated,it's hard to follow a corresponding guidance in the judical practice when it comes to judging cases of state compensatim so that it maybe a happening that the government ignores

但由于目前理论上对此研究甚少，尚未形成完整的理论体系，司法实践中很少有人能够正确地加以运用，以致在审判实践中常有错判现象的发生：该判赔的未判，不该判赔的判了。

In this theory system, the Higgs field may not be lack, as well as bringing drawback so called mediocre and unnaturalness; and as yet prophesied Higgs particle haven't be discovered.

但其中的Higgs场，在这一理论体系里，既是不可缺少，又显得不大协调。因为，它给标准模型带来了理论上的缺陷，即所谓的平庸性和不自然性问题；而且，迄今还未找到它所预言的Higgs粒子[1]。

When the parameters are unknown, based on the Lyapunov theory, corresponding controller and the adaptive law of parameters are designed to suppress chaos to any unstable equilibrium by the adaptive control strategy. The asymptotical stability of chaos control is guaranteed in theory by lemma of Barbalat.

当该混沌系统的参数未知时，基于Lyapunov稳定性理论，利用自适应控制策略，设计了相应的非线性控制器和参数自适应律将混沌系统的轨道控制到其任意一个平衡点，并借助Barbalat引理，从理论上证明保证了混沌控制的渐近稳定性。

Based on the market microstructure theory, this paper firstly discusses how the different trading mechanisms decide the price and the relationship of the trading mechanism and the volatility of return. Then selecting the stocks synchronously listed in the market of Mainland China and Hong Kong as the sample, we empirically analyze the relationship of the trading mechanism and the volatility of return. After describing the originality variance ratio of the markets, this paper explains the outcome of the empirical and makes a GARCH (1, 1) model for further analyze.

本文以金融市场微观结构理论为基础，首先从理论上探讨了不同的交易机制对股票价格的确定过程，以及交易机制与股票价格波动性的关系问题；接着本文选用同在中国大陆和中国香港地区上市的公司股票每日的开盘和收盘价格为样本，分别以收益率的原始方差比和GARCH(1， 1)模型估计的方差比实证分析了交易机制与股价波动性的关系。

The paper studies the degradation rule of physical mechanical property of vulcanizate during the period of heat ageing, which involves the relationship between the property, variable temperature and time. The analytic expressions for the frictional temperature rise of the interface were presented according to the theory of heat conduction of solid when a tire slides of rolls along the road.

本课题针对影响汽车轮胎橡胶机械性能的温度老化模型进行了一定深度的理论研究，并进一步研究轮胎的在滑动、滚动时的温度场的数学模型，在理论上论证了温度、压力是影响轮胎行使安全性能的重要因素，并以其作为最终的监测对象。

This res ult provides the theoretical basis for the system of zero order release as well as how to control the release rate and the amount of drug release.

根据该模型还从理论上分析了两种限定条件下药物的释放特征：当DmDf时，释放速率变为常数，达到零级释放，其释放速率与药膜无关，这为零级释放缓释体系如何控制释放速率和药物释放量提供了理论依据：当Dm Df时，药物的释放速率与药膜中的释放系数、溶解度和药物的装填量有关，与包膜过程无关，其释放过程类似于混合药膜缓释体系。

Based on the classical Ekman theory, a series of intermediate Ekman boundary layer models, which retain the nonlinear advective process while discard embellishments, have been developed with the intention to understand the complex nonlinear features of the Ekman boundary layer and its interaction with the free atmosphere. In this paper, the recent advances in the intermediate boundary-layer theoretical models are reviewed.

摘要大气边界层及其与自由大气之间的相互作用具有明显的非线性特征，而这些特征是经典Ekman理论所不能描述的，因此，发展中等复杂程度（介于完全模式与经典Ekman模型之间）的大气边界层动力学模式，简称中间模式，对人们从理论上认识大气边界层动力学过程的非线性特征具有重要意义。

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。