多元回归分析

And52examples that between250and300u/L.The rate of abnormity was30.29%.Conclusion The sensitive and accuracy and spe-cialties of the detection in BALP confirmed good by clinic diagnosis of rachitic,superior to other methods and index.

用全血干化学免疫浓缩法对307例新生儿进行骨碱性磷酸酶活性测定，采用多元线性及逐步回归法分析新生儿BALP活性水平与母亲妊娠因素的相关性。

By taking optimization for culture media of diamondback moth as example,theoretical research of SVR model in media optimization was carried out.Based on initial composition,Secondary Leave-one-out was carried out after kernel optimization and descriptors screening,the precision is higher than linear regression model,it is showed that SVR is proper for media optimization.

本文首先以文献报道的小菜蛾饲料配方优化数据为例，建立基于SVR优化配方、分析因子效应的方法学：从原始配方样本集出发，以SVR进行核函数寻优和自变量筛选后实施双重留一法预测，预测精度优于多元线性回归模型，表明非线性的SVR更适合用于优化配方。

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。

Molecular topological research has been applied to corrlelate hydrogen connectivity indices of 34 alkanes in naphthas and the chromatographic retention index in the gas chromotography.

通过计算石脑油中 34种烷烃的氢连接性指数，用多元线性回归将它与毛细管气相色谱保留指数进行关联分析获得良好的相关性，相关系数R为 0 。990 0 ，标准偏差 s为 15 。2 4 。

Besides, it also aims at proving that Tan advocates the Chinese Americans reclaim their ethical identity through retaining the Chineseness so as to strike the psychological balance, and introduce the Chinese way of understanding the world: a wholistic life-world with all merged cultures to the Americans, in the hope of building up a harmonious society with the peaceful co-existence of different races and cultures.

本文通过分析试图指出谭通过描绘一个根本不存在的阴间世界以非理性的形式解构了种族主义尚存的所谓理性的美国社会现实，并通过引介中国强调&全&和&融合&的体悟方式倡导华裔在心灵上对族性的回归，以争取在美国社会达到多元文化共生的和合状态。

Dead branches or knots in different sizes of tree was studied and different branch development phases of growth,suppression,death and self-pruning was analyzed to evaluate the effect that knot size and distribution impact on timber quality.Branch and knot dynamic models were developed using stand and tree variables.Based on multipleunit stepwise regression method, the individual tree growth model was established using forest and crown factors as the variable. The best taper equation model of Larix olgensis was bucking data of 130 sample trees selected in the studied area.

本研究以不同年龄、不同密度及不同立地条件的落叶松人工林作为研究对象，基于19块标准地中95株标准木的树干解析、枝解析及节子剖析数据，揭示了不同林分条件下林木的枝条数量及在树冠内的空间分布格局、生长发育规律；研究了不同大小树木的死枝和节子大小及其变化规律，分析了枝条的生长、被压、寿命和自然整枝过程，评价了节子大小和分布对木材质量的影响；以林分变量、林木变量和着枝深度等为自变量建立枝条生长和节子大小的动态预测模型；选择林分因子和林木的树冠因子作为竞争因子，用多元逐步回归的方法建立落叶松人工林与距离无关的单木生长模型，并根据研究地区选取的130株造材样木数据，建立了落叶松人工林最佳削度方程。

Firstly, it makes statistical significant testing of extra earning in declaration term of new stock. Secondly, it sets up linearity regression model of one factor to explain how much extra earning is from dividend. Finally, it sets up linearity regression model of multi-factor founding on theory analyzing of the first chapter to explain how many factors influence extra earning.

首先对新股公告期的超常收益做统计显著性检验，然后建立一元线性叵归模型，说明超常收益有多少是来自于股利，最后在第一章理论分析的基础上建立多元线性回归模型，说明这种超常收益的影响因素。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐