Therefore, the equations of trend surface are not suitable for the tool of calculation.
所以趋势面方程不宜作为精确计算的工具。
A combining fitting with trend surface fitting and multidimensional curve fitting is proposed.
本文提出将趋势面与多面函数结合拟合DEM数据。
The error of mathematical model is mostly resulted from near properties of the equations of trend surface.
数学模型误差——主要由趋势面方程的逼近特性所引起。
Some normalization methods are discussed in detail, including histogram method, expectation-variance method and trend surface analysis.
这里详细介绍了各种测井数据标准化的方法原理，并给出了相应的实例。
Objective to explore applicability of tri dimensional auto regression trend surface model in studying the space time dynamic of disease.
目的探讨三维自回归趋势面模型技术在疾病时空动态分析预测中的应用价值。
Linear models mainly include the factor analysis model and the trend surface model. And nonlinear models include BP neural network model.
其线性模型主要为因子分析模型和趋势面分析模型，非线性模型为BP神经网络模型。
Objective This paper explores an application of trend surface analysis and residual analysis in geographical distribution of the mortality rate.
目的探讨趋势面分析法和残差分析法在研究死亡水平地域性分布特点中的应用。
General spatial analytical method include geostatistics, spatial autocorrelation, fractal dimension, trend surface analysis, scale variance analysis.
常用的空间分析方法有地统计学、空间自相关分析、分维数分析、趋势面分析、尺度方差分析等。
The regional geological data and the gravity trend surface analysis technique were used to investigate the structural variation in the northern Jiyang Depression.
利用连续变化的趋势面分析技术及区域地质资料研究了济阳北部地区的构造变化规律。
P-variate Q-time hyper-trend surface method is derived on the basis of binary quadric hyper-trend surface method, and its algorithm and programming method are presented.
将在地质方面常用的二元二次趋势面问题，推广到P元Q次超趋势面，并分析了其中的原理和计算方法。
This article distinguishes two different sedimentary environments of Fuyu and Yang-dachengzi oil-bearing series in Sanzhao depression with geological analytical method of trend surface.
应用趋势面地质分析方法，区别出三肇拗陷扶余、杨大城子油层两种不同的沉积环境。
Methods To establish trend surface analysis (TSA) model of goiter rate of children aged 8 to 10 years by using the data on IDD evaluation in 2000 and regionalistic map of Sichuan province in 1999.
方法应用2000年四川省碘缺乏病评估资料和1999年四川省行政区划电子地图，建立四川省8～10岁儿童甲状腺肿大率趋势面分析模型。
So, instead of'intermediate layer correction', we should adopt free air gravity anomaly and'topographic trend surface correction', which result in topographic trend surface free air gravity anomaly.
为此，应当不做“中间层校正”，而应代之采用自由空气重力异常加上“地形趋势面校正”之结果，以形成地形趋势面自由空气重力异常。
Results there is multi-collinearity bias in the result of the least square estimation trend-surface model, use the method of ridge regression can control the multi-collinearity bias.
结果趋势面分析往往存在共线性偏倚，利用岭回归趋势面分析可以在一定程度上控制共线性偏倚。
Objective To explore the application of the trend-surface model on geographical distribution of contagious diseases.
目的应用趋势面模型分析传染性疾病的地理分布趋势。
The regional variations of the perinatal mortality and the incidence rate of low birth weight infant in China were studied with trend-surface analysis.
应用趋势面分析法，对我国省、市和自治区围产儿死亡率和足月低体重儿发生率进行地理流行病学研究。
Methods:The geographical distribution of infertilities of different regions in Chongqing city was investigated based on the methods of the trend-surface analysis.
方法：应用趋势面模型探讨重庆市各区县育龄妇女不孕率的空间分布趋势。
Methods:The geographical distribution of infertilities of different regions in Chongqing city was investigated based on the methods of the trend-surface analysis.
方法：应用趋势面模型探讨重庆市各区县育龄妇女不孕率的空间分布趋势。
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