变量

Our method is different from the conventional ones in that it combines the information of mean model and the inrormation of variance model. and PICa put suitable weights on mean and variance variable penalty.

与经典方法不同的是，该准则同时考虑了均值模型和方差模型中的信息，并对不同模型中的变量施以恰当的惩罚力度，达到了同时选择变量的效果。

The time evolution of expectation values of the basic dynamic variables in a quantum system under different effective Planck constant were compared with the exact values of the basic dynamic variables in classical system. It is found, for the regular motion, the difference comes from the quantum effect; for the chaotic motion, it comes from the dynamical effect and the destruction of the dynamical system.

通过引入等效普朗克常数，将量子系统中基本动力学变量的期望值和经典系统中基本动力学变量的精确值的时间演化行为相比较，分析了两者产生差异的因素，规则运动主要是和量子效应有关，而混沌运动则是和动力学效应有关，即与系统的动力学对称性破坏相联系。

Whether a polyhedron can be recovered from a single perspective view is studied and theoretical analysis as well as simulation results are presented.

不同于其它方法，我们的不变量是以实数形式给出的，这组不变量用来训练一个三层感知器，学习算法是BP算法。

And 15%, the positron average lifetime increases with the increasing strains.

形变量为2.5％-15％的样品中，测量结果显示正电子寿命随作形变量的增加而增加。

First not taking the measurement error of covariates into account, we construct respectively structural regression models of lung function indices on the covariates. Then we use structural regression models with measurement error of multidimensional covariates to estimate synthetically the average effects of air pollution on lung function of preadolescent children.

先不考虑协变量—儿童年龄、身高、体重的测量误差，分别就儿童的各项肺功能指标对年龄、身高和体重建立结构回归模型；然后在协变量的测量误差分布相同和不同的假设下，分别建立各项肺功能指标对年龄、身高和体重的带有测量误差的结构回归模型，从而综合估计空气污染对儿童肺功能的平均影响效应。

The predictive ability of a simple three-compartment model with no covariates was initially compared to models with premedication lorazepam vs.

将简单的没有协变量的三室模型与以术前药、性别和体重作为协变量的模型进行比较。

The study of invariable and Preserver Problems about all kinds of invariable is an observational problem in the area of mathematics.

研究各种不变量以及不变量的保持映射和变换历来是数学领域关注的问题。

The study of invariable and Preserver Problems about all kinds of invariable isan observational problem in the area of mathematics.

研究各种不变量以及不变量的保持映射和变换历来是数学领域关注的问题。

It depends on the increment of invariants of the stress, and therefore is independent of the rotation of the principal axes of stress.

使用张量函数表示定理，给出了内变量演化方程的一般表达式，它取决于应力不变量的增量，因而与主轴旋转无关。

Assuming that the plastic deformation ofmaterial can be given by the internal states of material and theirevolution laws, a principal fibre bundle structure and the correspondentrelationships between the geometrical characterization and themechanical properties of the structure are obtained.

以连续介质力学内变量理论为基础，建立了一个以材料内部微结构变量为底流形，材料外部变形状态为对应纤维的材料状态纤维丛模型，使材料的力学特性与模型的几何性质自然对应起来。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。