有效数

And its convergence property, asymptotically converges in probability, is proved. Numerical results on some typical optimization problems show that the algorithm proposed is efficient.

数值结果表明，对于维数较高的连续函数优化问题，采用基于均匀分布的进化策略能够快速有效地收敛到全局极小点。

Relation between geometrical contour error of inner corner and machining condition is investigated by the experimental plan of Taguchi quality design. Through the quantitative analysis, the geometrical contour error is mainly affected by wire tension and flushing pressure. By regression analysis, a mathematical model is established to estimate cutting path error of corner cutting. According to the estimated cutting path error, the program path is corrected.

研究首先以田口式品质设计实验计画法来探讨加工参数与隅角形状误差间的关系，从变异数分析的结果得知，线张力与冲水压力是对於隅角精度影响最显著因子，应用回归分析建立转角加工路径误差量估测模式，利用此模式以预测不同加工条件下隅角加工路径误差量，依据预测加工路径误差量计算轨迹补偿量，实验结果证明本文所提出轨迹补偿策略可有效提高60%之隅角加工精度。

Based on the wide concerns about the Integrated Social Emergency Response Communications Systems,this paper mainly discusses the development strategies for digital trunking and emergency communications in China. The establishment of the state /province/city level integrated emergency response communications systems is very important. The plan and implementation of new generation Integrated Emergency Response Systems following the concepts of NGN and 3G evolution should be taken into consideration, The relationship between public networks and IERS should be correctively dealt with and actively coordinated. Besides, it is involved how to accelerate technology innovation, open correlative standards and interfaces, and promote effective interconnection and interoperation for operators and users to gain maximum benefits.

文章在论述目前广为关注的社会应急联动通信系统的基础上，探讨了中国数字集群及应急通信的相关发展策略，如有关国家/省/城市级应急联动通信的重要性，如何基于NGN及3G演进概念规划与建设新一代应急联动通信系统，如何正确处理与有机协调公众网络与专网应急联动通信之间的关系，如何加速技术创新，如何开放相关标准与接口、促进有效互联互通、维持多厂商环境下运营商及用户利益最大化等。

There are two problems,the first is the fact that its natural covering under the self-affine transformation is not a efficient covering, the second is the fact that the limiting frequency of some digits or fibers may not exit.

其困难在于由于其仿射背景，导致它们的自然覆盖不是一个有效的覆盖，以及某些点或纤维的频率可能不存在导致维数估计的困难。

It is a generalization of the nonlinear diffusion equation proposed by Perona-Malik and the method presented by Cuesta, and interpolates between the nonlinear parabolic equation and the nonlinear hyperbolic equation, thus can effectively control the diffusion process so that noises can be removed and details of the image such as edges can be preserved as much as possible simultaneously.

提出了一种包含对时间的分数阶导数的非线性扩散方程，它是对Perona-Malik的非线性扩散方程和Cuesta提出的方程的推广，介于非线性抛物方程和非线性双曲方程之间，从而能有效地控制扩散过程，使得在去除图像噪声的同时能够尽可能地保留图像的边缘等细节信息。

For now, you need to know that there is no loss of precision when the decimal number has 18 or less significant digits.

现在，你需要知道，有没有精度损失十进制数时，有18个或更少的有效位数。

In the event of several declarations for the Flight Performance, only the most recent shall be valid.

为飞行表现宣布数个航道的情况下，只有最近的才有效。

The corresponding diagnosable systems are characterized in terms of a graph-theoretic condition, and a series of valuable conditions on a diagnosable system is presented. And a class of diagnosable systems that have a minimum number possible of communication links (known as optimal diagnosable systems) is proposed.

得出了系统中故障结点机数不超过n-2的结论；●解决了特征问题，给出了按图论方式表述的充分必要条件；●解决了诊断算法问题，给出了一个有效的诊断算法，该算法具有线性时间复杂度和多项式诊断报文总规模的特性；目前，上述研究工作所取得的结果还没有文献报导。

Fractal dimension is the simple and effective dimensionless index to reveal the complexity of object.

故障的出现增加了信号的复杂性，而分形维数是描述事物复杂性的简单而有效的无量纲指标。

The main results, obtained in this dissertation, may be summarized as follows:1. In chapter 2, the differential property of the optimal value function with a non-compact set is studied. The expression of its lower-Hadamard directional derivative is obtained.

第2章研究了非紧致集上最优值函数的微分性质，首先给出了最优值函数的Hadamard下方向导数的表达式，其次在最优值函数的有效域为非空凸集的情况下刻画出了次微分的表达式。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。