组合方法

For about 20 years,lots of boffins have do their best in the field,the system reliability theory has made a prominently progress,and produced many theories and methods one after another.

主要以概率论、随机过程论、决策论、博弈论、组合数学和近代数理统计方法为基础，通过有限元、边界元法和随机网络分析技术为计算手段，二十多年来，经过大量科研工作者的辛勤努力，使得系统可靠性理论取得了令人瞩目的成绩，相继提出了多种理论方法。

Of the elements affecting the location of shopping center, the index system is determined by applying analytic hierarchy process method. the comprehensive evaluation system for it is established by means of fuzzy mathematics.

通过对影响购物中心选址因素的分析，运用层次分析方法设计了选址评价的指标体系，然后确定每层因素权系数，再确定低层因素对目标层的组合权重系数，应用数学的方法建立购物中心选址的综合评价系统。

On the basis of summarizing and discussing the gamma inversion, we point out that an analytic method of volume attribute is very important. The method integrates multiple stepwise regression and cross verification to optimize and combine the attribute, adopts the convolution factor to eliminate frequency difference between the seismic and logging data, uses the neural network as a matching and predicting tool. Because of its religious theoretic base, the method is more accurate than other ones.

在对目前常用的伽玛反演方法进行总结、讨论的基础上，指出地震体属性分析法具有明确的物理意义，有效结合了多元逐步回归和交互验证法进行属性的优选和组合，采用褶积因子消除地震信息和测井信息的频率差异，并以神经网络为拟合和预测手段，具有严谨的理论基础，相比其它几种方法更为准确合理。

Though in the impact process exists rebound phenomenon and the wave form becomes interrupting impulses, yett the energy loss of the mass is very low. So it is thought to link the interrupting impulses to a continuous wave form by using proper way and then to process the data by mature vibration analyzis technique.

该方法认为，尽管冲击过程中存在着&回弹&，波形成为断续的脉冲，但质量块在空中运动中能量损失很小，可以用适当的方法把它们组合成连续波形，以致我们可以用成熟的振动分析技术进行数据处理。

Formulas to determine the reinforcement and bearing capacity of thick pile cap are selected on the basis of summarizing current design method. Thus, the design method of thick pile caps is put forward.

在总结现有方法的基础，选择出了厚承台的配筋与压杆承载力计算公式，由此得到了群桩基础厚承台拉压杆与梁组合体系设计方法。

With the help of these conditions, computer efficiently searches out many quasi-perfect and double quasi-perfect punctured binary array pairs. The relationships among perfect punctured binary array pair, quasi-perfect and double quasi-perfect punctured binary array pair is presented. Specially, when first and second dimension period of the punctured binary ar

定义了非周期屏蔽二元序列偶的自相关函数、屏蔽二元互补序列偶和最佳屏蔽二元互补序列偶，给出并证明了屏蔽二元互补序列偶的变换性质；和它存在的组合允许条件，用计算机搜索出若干最佳屏蔽二元互补序列偶；给出了屏蔽二元互补序列构造出新的屏蔽二元互补序列偶的四种构造方法；并且，给出了利用不同长度的二元互补序列和屏蔽二元互补序列偶构造出新的屏蔽二元互补序列偶的四种构造方法。

Themultiple correlated coefficient of mathematical model was 0.951,which showed that the experimental designmethod is feasible in study self-thinning of forest.

尝试将二次正交旋转组合设计方法应用于杉木林自疏规律研究，建立重要环境因子与密度变化间的统计模型，并进行统计分析，表明采用试验设计方法研究森林自疏是适用的，其复相关系数为0.951。

In NWFM,to solve self-consistently the set of DFT Kohn-Sham equations,nuclear weight function is employed for numerical solution of multicenter integra-tion,which decomposes the problem of three dimensional integration to a sum ofone-center,atomic-like integrations.

首先介绍如何利用线性组合的原子轨道方法求解密度泛函理论中的K-S方程；接着详细地说明了核权重函数的概念，并列出了两种常用的核权重函数形式，同时阐述了如何利用核权重函数求解包含多中心积分的矩阵元以及复杂的三维泊松方程以获得电子间库仑势的方法；然后给出了求解矩阵元、有效势以及体系总能的具体数值计算公式。

This paper focus on the feasibility study on combination of seal and extrusion to hole formation and rammed cement soil pile, and its application on wet and sinking loessial area; gave a research method of bounds replacement rate for eliminating the wet or sinking of loessial area; and study on value access method of bearing capacity parameter for technology calculation.

结合了具体工程实践，本课题的主要研究内容：①研究挤密成孔法与夯实水泥土桩组合的可行性，及在湿陷性黄土地基中的应用；②给出使黄土湿陷性消除的界限置换率研究方法；③对采用此工艺计算承载力时参数的取值方法进行研究。

The research results show that as a meta-synthesis method for determining weights of region water resources allocation with distinct concept of mathematics and physics. MRIEM is handy and universal, its computation result is objective and reasonable, so it can widely be applied to theory and practice of different systems engineering.

结果表明：用MRIEM确定各子区域水资源分配权重，数学物理概念明确，方法简明、通用，计算结果客观、合理；MRIEM是一种从定性到定量综合集成的组合赋权方法，在系统工程理论与实践中具有一定的推广应用价值。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。