约束

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.In addition,the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method,consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

But although the marital ideal is inherently communal, it is also bounded by a commitment to autonomy as free exit and to equality as nonsubordination.

但是，虽然婚姻的观念固有地是共同的，但它还是受到对自由退出自主权的承诺的约束，以及对非从属关系的平等的承诺的约束。

In this paper, the functions and the fashions of regularization are discussed when traveltime tomography is reduced to the solution of linear equation system, the functions of regularization include: constraint components which are underdetermined or lie in null space using overdetermined components and all kinds of known information; treat the uneven coverage of rays and the inaccurate datas by damping.

反射地震走时层析最终可归结为线性方程组的求解，本文讨论了在线性方程组求解过程中正则化的作用和方式。正则化的作用有：(1)用超定分量约束欠定分量和零空间分量；(2)用先验信息约束欠定分量和零空间分量；(3)对射线的不均匀覆盖进行阻尼；(4)对数据的不准确性进行阻尼。

In order to study these algorithms systematically and deeply, they are reviewed in this paper based on c-means algorithm, from metrics, entropy, and constraints on membership function or cluster centers. Moreover, the advantages and disadvantages of the typical fuzzy partitional algorithms are discussed.

为了能更为系统和深入地了解这些聚类算法及其性质，本文从改变度量方式、改变约束条件、在目标函数中引入熵以及考虑对聚类中心进行约束等几个方面，对在C-均值算法的基础上得到的基于划分的模糊聚类算法作了综述和评价，对各典型算法的优缺点进行了实验比较分析。

In this paper, problems of trend test in clinical experiment are studied mainly by the statistical inference method under order restriction. The ori- gins of order restricted statistical inference are usually dated back to the early 1950s. At about the same time, a number of researchers started working inde- pendently on similar problems. The field developed rapidly during the 1960s and early 1970s and formed the more perfect theory of estimation and test- ing.

中文题名临床试验中的趋势性检验副题名外文题名 Trend test in clinical experiment 论文作者马艳萍导师史宁中教授学科专业概率论与数理统计研究领域\研究方向学位级别博士学位授予单位吉林大学学位授予日期2002 论文页码总数97页关键词临床试验趋势性检验数理统计约束下统计推断馆藏号BSLW /2003 /R311 /1 本文主要利用序约束下的统计推断方法对临床试验中的趋势性检验问题进行了研究。

On the basis of discussion of the promotive contributions of science and technology on economic sustainable development,science...

为此 ，通过对科学技术在经济可持续发展方面的促进作用进行初步的研究，指出：科学技术既可以突破劳动者自身对经济可持续发展的约束又可以突破生产资料对经济可持续发展的约束，从而为进一步研究科学技术与经济可持续发展之间的关系提供了理论基础。

The growth of economic scale is affected by many facts, but the resource constraint is the important matter, its shortage or reasonless collocation will restrict the growth of economic scale.

经济规模的增长受诸多因素的影响，其中资源的约束对经济规模增长的影响越来越突出，资源的稀缺或者不合理的配置都会对经济规模的增长产生很大的约束。

Facing the fact that the inefficient china securities market, the article analyzes carefully the reason for low contract efficiency from the following aspects such as property rights, insufficient information regulation and the structure of regulation mechanism. What抯 more, the article points out reregulation is a possible way to normalization development of china security market after analyzing the disadvantages of strengthening regulation and deregulation. At length, the thesis paper will discuss the design of reregulation mechanism from the principles of incentive and constraint regulation institution and punishment mechanism.

面对中国证券市场管制低效的局面，本文从产权、信息不足约束以及管制机构治理结构等方面详细剖析了造成管制低效的原因，进而在分析加强管制和放松管制等论点的不足之后，指出再管制是通向中国证券市场规范化发展的可行之路，而且从管制机构激励约束、惩罚原则等方面讨论了再管制实施机制的设计问题。

Firstly, an empirical approximation model of stochastic programming is obtained by replacing the probability measure of original program with empirical probability measure. Sequentially, the constrained stochastic programming is transformed into an equivalent unconstrained stochastic programming. Finally, using the epi-convergence theory, the almost everywhere upper semiconvergence of optimal solution set of empirical approximations for stochastic programming is obtained.

首先通过经验概率测度替代初始规划的概率测度得到随机规划的经验逼近模型，然后将带有约束的随机规划问题转化成与其等价的无约束的随机规划问题，最后利用上图收敛性理论，给出了随机规划经验逼近最优解集的几乎处处上半收敛性。

The paper studied the multiobjective semidefinite programming with a semidefinite constraint of a matrix function and a multiobjective function.

主要研究含矩阵函数半定约束和向量函数等式约束以及多个目标函数的多目标半定规划的对偶和鞍点问题。

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％。