回归方程

Results The factors including age, exercise, the exposure time to cell phone and computer, refurnishing houses, ventilation, supplementary of folic acid, favoring frying food, reproductive knowledge, premarital consultation, parity, the opportunity of plan for conception and occupational stress were significant different between case and control groups (P.05). Logistic revealed that exercise (OR=0.319), ventilation (OR=2.496), supplementary of folic acid (OR=2.365), age (OR=1.106) and occupational stress (OR=2.159) were in the regressive model.

结果］年龄、体育锻炼、使用手机和电脑的时间、装修、通风、补充叶酸、偏爱煎炸食品、生殖知识、婚检、产次、计划受孕时间和职业紧张在病例组与对照组存在差异(P.05)，Logistic回归表明体育锻炼(OR=0.319)、通风(OR=2.496)、补充叶酸(OR=2.365)、年龄(OR=1.106)和职业紧张(OR=2.159)进入方程。

Nonlinear least square method is used in regressing the kinetic equation of ethylene deep oxidation.

介绍了采用非线性最小二乘方法回归乙烯深度氧化反应动力学方程。

The phenomenon about water vaporization-induced ammonia volatilizing is verified, and it is studied quantitatively.

此外，通过回归分析还建立了表征施入土壤中尿素转化为铵态氮的动力学型方程，其参数均与土壤水分、温度有关，并得到这些参数的水热耦合效应关系式。

Fermentation kinetics including effects of cell, product and substrate were set up by nonlinear regression based on orthogonal experiments of metabolism.

由酵母细胞生长交叉实验的非线性回归分析，建立了同时包含细胞、乙醇和葡萄糖对发酵规律影响的动力学方程。

Regression analysis was used to associated factors,10 factors selected in the regression model included father lead exposure,did not wash their hands before the meal,the painted fitments in the rooms,usually play in the open air,the children's residence,sheet iron canned goods,peanut,bean,agaric and milk.

以血铅值为因变量，家庭装修、燃料、饮食等为自变量，经多元逐步回归分析(P=0.01)，有10个因素被选入方程，其中，父亲接触铅、儿童饭前不洗手、室内家具为油漆面、经常在户外玩、儿童所在居住地、吃铁皮包装的罐头制品、经常吃花生等7项因素与儿童血铅水平呈显著正相关

The literature values of methane solubility in hexane at temperatures of 298.15 K, 303.15 K and pressures up to 12.0 MPa validated the precision and stability of the apparatus. The total deviation of the system was less than 2.5﹪. The method of fitting gas solubility at high pressure by Krichevsky-Kasarnovsky K-K equation was also proposed and corrected.

利用此装置测定了温度为298.15 K、303.15 K和压力2.0～12.0 MPa下甲烷在正己烷中的溶解度数据并与文献值相比较，从实验数据的精度和重复性考察了实验装置的可靠性，实验值和文献值的相对误差均小于2.5﹪，同时根据Krichevsky-KasarnovskyK-K方程提出了一种从高压实验数据回归常压实验数据的方法。

Participants were 333 players (males＝238 and females＝95, aged＝16.76 ±.81) recruited from 12 male, 5 female, and gender mixed senior high school varsity teams of volleyball, basketball, baseball, korfball, handball, and table tennis. Exploratory analyses, multiple regression analyses, cluster analyses, ANOVA, and structural equation modeling were conducted and the major findings were as follows

研究参与者为国内高中排球、篮球、棒球、合球、手球、桌球和足球等受过正规训练的球类运动选手333名，平均年龄16.76 ±。81岁，其中男性参与者238名、女性参与者95名，分别来自12支男子球队、5支女子球队和5支男女混合的球队，经资料搜集完成，以探索性与验证性因素分析、多元回归分析、群集分析、单因子变异数分析和结构方程模式分析进行处理，得到以下几点主要发现

Starting from gas state equation, this paper derived a binary regression model for predicting UGS pressure and gas injectionproduction volume relationship.

从气体状态方程入手，推导出了一种预测地下储气库压力和注采气量关系的实用二元回归模型。

By the modem time series analysis method, based on the ARMA innovation model, under the linear minimum variance optimal information fusion criterion, three distributed fusion steady-state optimal Kalman filters, predictors and smoothers weighted by matrices, scalars, and diagonal matrices are presented for multisensor systems with correlated input and observation noises, and with correlated observation noises. The Lyapunov equations and formulas of computing local filtering, predicting and smoothing error variances and covariances are given, which are applied to compute optimal weights. The corresponding three distributed fusion Wiener state estimators are also presented.

应用现代时间序列分析方法，基于自回归滑动平均新息模型，在线性最小方差最优信息融合准则下，对于带相关输入噪声和观测噪声和带相关的观测噪声的多传感器系统，提出了按矩阵加权、按标量加权和按对角阵加权的三种分布式融合稳态Kalman滤波器、预报器和平滑器，其中提出了局部滤波、预报和平滑估值误差方差阵和协方差阵的Lyapunov方程和计算公式，它们被用于计算最优加权，也提出了相应的三种分布式融合Wiener状念估值器。

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。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。