查询词典 null function

Radial basis function coupled with a polynomial basis function was used as a trail function, and a Heaviside function was used as a test function of the weighted residual method.

这种无网格方法采用径向基函数耦合多项式基函数来近似试函数，采用Heaviside函数作为加权残值法中的权函数。

This value is characterized as the unique function that satisfies efficiency, complete symmetry, the quasi-null player property and additivity.

这种价值作为唯一的方程的特点是，满足有效性、完全对称性等特点。

After comparing the two type of tests,we came to some conclusions.The tests based on binomial test can be regarded as some kind of permutation tests under certain definition of "permutaton".If the tests are related to statistics,then whether they can be viewed as permutation tests depends on if the value of the probability,p,is known where p is the population parameter in the null hypothesis.For tests like Kolmogorov goodness-of-fit test,since the statistics is calculated based on empirical distribution function,hence no matter how we repermutate the observations,the order statistics is the same.This kind of tests can't be regarded as permutation tests.

我们得到的结论为：在一般的无母数检定中，如果检定与binomial test相关，基本上都可以视作排列检定的一种；与卡方检定相关的检定，基本上和p值已知或是未知有关，这个p值为原始假设下所要检定的母体机率值；其他检定如Kolmogorov goodness-of-fit test，由於统计量的值是根据empirical distribution function决定，而不论如何重新排列样本，其顺序统计量都不变，所以无法视为一种排列检定。

Boivin P Protein phosphorylation-dephosphorylation and red cell membraneskeleton equilibrum structure and function of cytoskeleton ED Rousset B A F , 1988,null

施岩%王思端利用激光衍射法测量红细胞膜的剪切弹性模量和表面粘度中国生物医学工程学报， 1997，2

If the function fails, the return value is NULL. To get extended error information, call GetLastError.

如果函数执行失败，返回值是NULL，调用GetLastError函数可以得到错误的情况。

It used chebyshev polynomials to calculate sine function for improving its accuracy. It adopted optimized null vector distribution strategy to decrease switching times and switching current.

其采用Chebyshev多项式计算三角函数，提高了运算精度；采用零矢量象限间交错分布的优化策略，以减小开关次数，降低开关电流。

Function getFileList $dirname =null,$returnDirs =false,$reset =true

返回指定目录里的文件列表，如果没有指定目录，将使用当前目录

If the SID equal NULL,this function set a security of "EveryOne".

如果 SID 对手零，这功能设定"每个人"的安全。

If the function fails, the return value is NULL.

如果函数失败，返回值为NULL。

Then,the system is linearized by variational approach,the local null controllability is proved by applying a generalized implicit function theorem and combining the property of the solution mapping.

首先得到了系统的逼近能控性；然后采用变分方法对系统线性化，再结合解映射的性质，应用推广的隐函数定理，证明系统的局部零能控性；最后给出系统零能控的结论。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。