Linear regression analysis of the prevalence rate over years has been used to measure time trends.
研究对象为1993～2000年所有孕满20周的总出生人群。
By means of collecting rental price samples of commercial-office buildings, which are distributed in the Nanjing Road, the Yanan Road and the Huaihai Road, altogether 24 sample areas, and with the help of multivariate linear regression analysis method, the authors analyze the interaction relations between the rent price of Shanghai commercial-office buildings and geographical location, service facilities, traffic conditions, average floors, average parking spaces and virescent coverage.
本文从总体上分析了上海部分区域商务办公楼的平均租金差异，并选择商务办公楼比较集中的南京路、延安路和淮海路三条线路作为典型调查区段，共采集24个样本区域、66幢甲级商务办公楼、492个具体样本资料，运用多元线性回归分析方法，揭示了上海市商务办公楼租金差异与地理区位、服务设施、交通条件、平均层数、平均停车位及绿化景观6个影响因子的相互作用关系。
Furthermore, the author studies the samples of 188 listed companies which have experienced control transfers in A-share market in Shanghai and Shenzhen from the year of 2001 to 2003. An empirical study is conducted to analyze the changes of operating performances before and after control transfers through the factor analysis method, and an econometrical model is established based on the analysis to do a multiple linear regression to further study how the structure of stock ownership influences the control transfers performance of companies.
接着，本文以2001年～2003年我国深沪两地A股市场上发生控制权转移的188家上市公司为研究样本，通过因子分析法对样本公司控制权转移前后的经营绩效变化进行实证分析，并在此基础上，利用多元回归模型探讨了股权结构变量对公司控制权转移经营绩效变化的影响。
The results indicated that there were no significant difference in stock-density index between the SYS and ECS in all seasons except autumn spring: t'(43=1.68, P=0.104; summer: t'(60)=0.31, P=0.7567; autumn: t'(33)=2.69, P=0.011; and winter: t'(43)=1.74, P=0.089. There were no significant regional difference in bottom salinity and depth of distribution areas between the SYS and ECS in summer, while there were significant regional differences in bottom temperature, salinity and depth between the SYS and ECS in spring, autumn and winter. The relationship between environmental factors and CPUE for small yellow croaker was fitted using multiple linear regression analysis, and the influence factors were screened based on Akaike Information Criterion.
研究结果表明，黄海南部和东海小黄鱼资源密度指数分布除了秋季分布有显著差异之外t'(33=2.69，P=0.011，其余季节分布均无显著差异（春季：t'(43)=1.68，P=0.104；夏季：t'(60)=0.31，P=0.7567；冬季：t'(43)=1.74，P=0.089；夏季的底层盐度分布和水深分布没有明显差异，在其他季节，黄海南部和东海的底层水温、底层盐度和水深分布等环境特征的差异明显，均达到极显著(P.01)或显著(P.05)水平；资源密度与环境因子回归分析和AIC模型选择中，2个海域夏季的小黄鱼资源密度受到有显著性影响的环境因子数最多，而冬季受到有显著性影响的环境因子最少。
In order to look for fast calculation model of a linear oscillation motor, which can express the transitive relation between parameters and performance. The basic mathematic model of a linear oscillation motor is established by finite analysis method and the regression modeling method for the support vector machines is introduced. Then, the SVM calculation model is set up. A shortcut online calculation method is provided for the process of the parameter optimization of linear motors.
为了寻找反映直线振荡电机参数与性能输入输出传递关系的快速计算模型，利用有限元分析法，建立了直线振荡电机非参数建模的基本数据计算模型，根据基本数据计算模型，引入支持向量机(Support Vector Machines，SVM)非参数回归建模方法，建立了用于直线振荡电机参数与性能之间输入输出传递关系的SVM计算模型，为电机参数优化过程提供了方便快捷的在线计算方法。
The effects of index of physique growth on content of bone mine were detected with correlation analysis and multivariate linear regression.
使用单光子骨矿分析仪测定调查对象的非优势侧桡骨远端1/3处骨矿含量和骨宽，并测定其身高、体质量，采用相关分析及多元线性回归分析体格生长指标对骨矿含量的影响。
Quantitative structure-activity relationships used in pharmacology are described briefly, and expressed by the linear multipl regression analysis model.
本文简单描述了定量药物结构——活性分析方法，并用线性多元回归分析模型表示。
Get the general steps to obtain the optimal measuring point on spindle component through the test method; At last, based on the analysis of existing thermal error compensation modeling methods, real-time surplus temperature as independent variables, use multivariate linear regression modeling, which improves modeling accuracy and robustness; proposed to use multivariate linear regression modeling obtain thermal error compensation coefficients matrix, genetic algorithm optimize the compensation model coefficients, the maximum residual error minimum as objective function, get the balanced thermal error compensation model, increased the compensation modeling results.
得到了通过试验法获得主轴部件最优测点的一般步骤；最后，在分析现有热误差补偿建模方法基础上，提出了使用实时过余温度作为自变量，应用多元线性回归建模，提高了建模的精确性和鲁棒性；提出了使用多元线性回归方法得出热误差补偿模型系数矩阵，遗传算法对补偿模型系数优化，以最大残差最小为目标函数，均衡确定热误差补偿模型的方法建模，提高了补偿建模效果。
Methods1 Establishment of a psychological scales in the framework of Maslach multi-dimensional theory and examined its validity and reliability.2 With stratified cluster sampling, the psychological scales were enrolled among different populations by Job Burnout framework Scale for nurses in GX in 2759 nurses.3 Multivariate linear stepwise regression analysis method was used to find the influencing factors of Job Burnout.
方法1以Maslach多维度理论为框架，编制职业枯竭量表，并对量表的信度和效度进行检验。2采用多阶段按比例分层整群系统抽样方法进行抽样，使用自编职业枯竭量表，对广西2759名护士进行问卷调查。3应用多元线性逐步回归分析方法筛选职业枯竭的影响因素。
Seeing through the development of the trade, with the linear regression analysis, this article mainly carries out a demonstrational analysis on this bilateral trade.
双边贸易柳岸林中国一东盟自由贸易区的实证分析的发展前景如何？合理解决这些问题对自由贸易区的顺利实现是很有帮助的。
And, it establishes the computer model with the Scott·Henseleit method, which analyses and optimizes the ventilation network and auto-creates the figures of the evading disaster and succoring disaster with the computer. The paper establishes the GM(1, 1) gray forecast model, and forecasts the amount of gasemission of the laneway based on the history data, and then compartmentalizes the danger grade for the laneway. Utilizing the principle and method of cybernetics, the paper brings the feed-forward and feedback. controlling method on the hidden risk in the mine, namely, the double-loop model of forecasting and early- warning. Especially in the feed-forward forecasting, the paper adopts the one unit non-linear regression analysis and forecast method, and forecasts the hidden risk amount in the mine during some time, and compartmentalizes the hidden risk grade based on the history data.
论文中，利用斯考特·亨斯雷法建立计算机模型，对矿井通风系统进行解算和优化调节，并通过计算机自动生成避灾、救灾路线图；建立灰色GM(1，1)预测模型，对巷道瓦斯涌出量进行预测，进而对巷道中的瓦斯事故危险性进行危险等级划分；利用控制论的原理和方法，提出了煤矿通防隐患前馈——反馈控制方法，即预测、预警双环模型，采用一元非线性回归分析预测方法，对煤矿某一段时间内的隐患数量进行预测，并结合历史数据，对当前煤矿隐患排查处理状况划分等级，分别予以管理和控制。
Sample selection; descriptive statistics and t -tests; linear and logistic regression; frequency table analysis.
样本选择；描述性统计和t检验，线性和后勤回归；频率表的分析。
The regression analysis between copy number and cycle of threshold 1/2 displayed good linear relationship for the 15 nt deletion mutation.
对照组中，采用Taq DNA聚合酶或3`末端无硫代修饰的特异性引物，均易产生假阳性且呈退火温度依赖性。
The effects of component dimensions on the transmission efficiency were thoroughly analyzied. The experimental data of movble sleevtooth gear showed that the theoratical results were reliable. Stresses and their distributions on the sleev teeth subjected to several concentrated radial forces were analyzied by numerical analysis method. The positon which had maxmum stress were found and effects of sleev-tooth dimensions on the maxmum stress were also analyzed. Based on the calculated data and non-linear regression method, a simple and accurate mathematical model to calculate the stresses at any points on the sleev-teeth or medium thickwall cylinders, which has no analytical solution, was worked out.
从套筒活齿的受力情况出发，首次研究了承受多个集中荷载作用的圆柱筒的应力及其分布规律，发现了在圆柱筒中产生最大应力的区域，从而确定了强度计算的危险点位置；利用大量的计算数据和非线性回归分析方法，对这种不存在解析解的中厚或厚壁圆柱筒的应力问题，建立了圆柱筒在受力大小不同、受力位置不同、受力个数不同以及几何尺寸不同时计算任意点应力的可靠经验公式，从而在力学上解决了这一类结构的应力计算和分析问题；统计学检验表明，该公式的计算结果与有限元法结果几乎完全一致；多点受力圆柱筒的光弹性应力分析结果进一步表明，圆柱筒应力计算公式是可靠的，并在相当大的范围内具有通用性。
Based on the observation data of suspended sediment concentrationcollected in 22 cruises with 3729 cases in the Yellow and East China Seas from 1959to 2002, this paper statistically analyzed the features of vertical distribution of SSC inthe sea water, and established some linear regression models of vertical distribution ofSSC adapting to certain sea area and certain season on the basis of correlation analysis.
本文以1959年至2002年期间，东中国海域现场调查的22个航次3729个悬浮物浓度数据资料为基础，采用统计学中相关分析的方法，分析了南黄海和东海北部海域的悬浮物浓度垂向分布特点，多元线性回归出了适应于不同季节、不同区域的悬浮物垂向浓度分布模型。
Thus during the calculation for geotemperature of unmeasured points, we carried out multivariate linear regression analysis for No.
因此在计算未测地温值时，首先将9煤层底板深度、温度、标高进行多元线性回归分析，利用多元回归关系式计算钻孔地温值，与实测值一起进行线性插值，绘制9煤层底板地温等值线图，并圈出正常温度及一、二级高温范围。
The multiple linear regression analysis is applied to single-point precipitation titration for the determination of various component of halide and thiocyanate.
本文将多元线性回归分析用于单点沉淀滴定法，同时测定了卤素及硫氰酸盐混合物各组分浓度。
Field tests on the water-saving hydraulic percussion were introduced overall, the problems occurred in the tests were exploded profoundly, and set forth solutions, finally, draws the conclusion that a large amount of surface water will be saved, drilling cost will be reduced greatly and drilling efficiency will be enhanced. Analyzed blow frequency is one of the most important feature parameters that decide drilling efficiency of steel ball percussion device, and blow frequency depends on pressure and flow of compressed air, so it is very important to define relation between blow frequency and pressure, flow of compressed air. How to establish function of blow frequency and pressure, flow of compressed air using dual linear regression analysis of mathematical statistics was introduced. Bench tests were Carried out on steel ball percussion device, and major parameters in working process were recorded, then draw the test results that drilling efficiency would be raised greatly drill with steel ball percussion device. Function of blow frequency and pressure, flow of compressed air was set up. Compared experimental data with data calculated according to the function, and draw the conclusion that experimental data is very close to calculated data.
第五章、概述了开展节水型液动冲击器及球体冲击器试验研究的目的及其必要性；详细介绍了节水型液动冲击器系统泵压和冲锤位移等参数的测试技术方法，对所得曲线进行了分析，算出了冲击器的冲击频率及冲击速度；根据位移曲线中的单个周期，利用傅里叶级数算出了冲击器的近似单次冲击功；在地表完成了不同口径节水型液动冲击器用于孔底局部循环的排量测试，指出了地表所测排量略大于冲击器在孔内实际排量的现状，并分析了其原因；全面介绍了节水型液动冲击器在山西黄土高原的野外试验情况，对存在的问题进行了深刻剖析，提出了解决方案，并得出节水型液动冲击器能够大大节约地表水、降低钻探成本和提高钻探效率的结论：冲击频率是决定球体冲击器钻探效率的最重要特征参数，而冲击频率又取决于压缩空气的压力和流量，因此，确定冲击频率与空气压力及流量之间的关系至关重要，在球体冲击器台架试验的基础上，笔者运用数理统计分析方法确定了冲击频率与空气压力及流量的经验方程，并将实验数据与经验方程的计算值进行了比较；结果表明，实验值与计算值吻合程度很好，从而得到球体冲击器将显著提高钻探效率的结论。
A, α and n in the analytical expressions of flow stress are 3.52×1010 /s, 0.023 MPa1 and 7.33, respectively, by linear regression analysis and optimization calculation. The hot deformation activation energy of TiB2/6351 composites during hot deformation is 170.10 kJ/mol.
通过线性回归分析和优化计算，得出流变应力σ解析表达式中 A、α和 n 分别为3.52×1010 /s、0.023 MPa1和7.33，其热变形激活能 Q 为170.10 kJ/mol。
First, each morphometric character is related to fork length by linear regression analysis and each relationship is considered as a unit character.
首先，以每一非体节形质对尾叉长做廻归判定，其次，以变积分析法比较各个非体节形质，在雄雌间及各海域标本间之异同。