Comparison of some simple curve models shows that S type growth curve accords well with the settlement of earth rock dams and has good prediction results. 首先综述了土石坝沉降统计预报模型的概况,在比较分析了几种简单曲线模型后认为,S型生长曲线较为符合土石坝的沉降规律,拟合预报效果良好。
Comparison of Stage-discharge Curve Fitting Based on BP Neural Network and Polynomial Fitting 水位流量曲线BP神经网络逼近与多项式拟合对比
Comparison Method of Logging Curve to Longtan Group Rock and Coal Seams of Jinsha Coal Field in Guizhou Province 贵州省金沙煤田龙潭组岩煤层测井曲线对比方法
Comparison of dispersive curve of Love wave propagating in horizontally elastic soil layers 成层介质中Love波相速度频散曲线计算的比较
By comparison of the characteristic curve between normal fabric texture and defects fabric texture, the defects can be detected with the characteristic curve distance. 通过正常纹理和疵点纹理中随机结构的表面维分形特征曲线比较,以距离为判别标准定位疵点。
In terms of simulation using MATLAB language and by conducting comparison experiment of regulation curve fitting, the rules influencing the distribution of fitting nodes based on the cubic spline function interpolation on the fitting errors are analyzed. 利用MATLAB语言仿真处理,通过平面规则曲线拟合比较实验,具体分析了基于三次样条函数插值的采样点分布对拟合误差的影响规律。
Determination of the content of sodium in acylglycerol using atomic absorption spectrometry was described through selection of the sample dissolving time and solvent acidity, and comparison of the working curve method with standard addition method. 通过对溶样时间、酸度的选择,以及工作曲线法与标准加入法的比较,介绍了甘油脂中钠含量的测定方法。
By analysis and comparison between the displacement curve in the absence of failure and that in the presence of failure, the causes of clutch failure are known. 通过中间件在无故障情况下的位移曲线与在故障影响下的位移曲线比较分析,最后可以掌握离合器故障产生的原因。
The phase comparison curve can be observed by using calculated values to simulate the curve. 利用计数值进行曲线拟合,便得到无死区相位比对曲线。
According to the comparison of load-displacement curve of smooth and milling steel fibers under pull-out from cement mortar, the effect of helical effect on adhesive properties and the effect of matrix on the adhesive strength were studied. 试验通过对平直型钢纤维和铣削型钢纤维在水泥砂浆中拔出时的荷载-位移曲线的比较,研究了螺旋效应对粘结性能的影响,及基体对粘结强度的影响。
This article deals with the calculation of measuring error caused by focusing error and the depth of field in non-far centre ray systems. At the end of the article a comparison of the curve of theoretical error with that of measuring error can be found. 本文讨论了非远心光路中调焦误差和景深所引起的测量误差计算,最后列出了理论误差曲线与实际测量误差曲线比较。
Comparison of the step response curve of the model to that derived actually from the heat exchanger shows that the result is satisfactory. 辨识模型给出的计算阶跃响应曲线与换热器的实际阶跃响应曲线比较表明:换热器动态模型辨识的结果是令人满意的。
The friction model in the brake process is built. At last, the model is validated by comparison of the simulated curve and practical brake one. 综合考虑静摩擦到动摩擦非线性阶段,动摩擦速度稳态阶段以及动摩擦随温度变化阶段,建立了制动器制动过程的摩擦模型,并用仿真曲线与制动过程曲线对比,验证了摩擦模型。
Through comparison of real apparent resistivity curve with theoretic apparent resistivity curve by 1-D forward computation, the method modified in turn the resistivity and the thickness for each conducting layer. 正演修正法通过比较实测的视电阻率曲线和一维正演计算的理论视电阻率曲线,依次修正每一个电性层的电阻率和厚度。
The TPG is solved by comparison testing pressure curve with theory curves in single log coordinate system. 在双对数坐标图上,用实测压力数据和理论无量纲压力曲线拟合,求出低渗透岩心的启动压力梯度。
Tabu search algorithm was used to search discrete points to find pathological peripheral visual field curve. Through the comparison between the pathological curve and standard curve the figure of visual field defect was obtained. 利用禁忌搜索算法对离散点进行搜索,找到病眼周边视野曲线,并将病眼视野曲线同标准视野曲线进行比较,得到视野缺陷图。
Linear regression equation is analyzed by using indirect error-smoothing, and non linear regression equation is optimally selected by using the method of comparison of midpoint of curve. 用间接观测平差法分析线性回归方程,用曲线中点比较法选择最优非线性回归方程。
With the comparison between the function curve and the simulation results, it is found that the function curve based on the theoretical model of composite media in parallel is in accord with the results simulated by FDTD method. 将模拟结果与混合介质并联理论模型相比较,发现该理论模型的函数曲线与时域有限差分算法模拟的结果相互吻合。
Comparison of Soil Water Retention Curve Model 土壤水分特征曲线模型比较分析
Objective: The goals of this study were to characterize the regional systolic wall motion features during left ventricular systolic time in dogs with AMI by comparison velocity curve and displacement curve. 目的:对比组织速度曲线与位移曲线对AMI犬左室局域心肌收缩功能评价的优劣性。
On the basis of this fact, the existing data about the water-drainage of the galleries are applied successfully to prognosis of the water gushing volume of the pits with the aid of the methods of selective comparison and curve equation. 利用生产坑道的排水资料,选择比拟法、曲线方程法,对砖庙硼矿区花园沟矿段进行了矿坑涌水量预测,取得了较好的效果。
Analytical Comparison between Grey and Exponential Curve Forecasting Models 灰色预测模型与指数曲线预测模型的比较分析
Research on the comparison of P-S-N curve measurement methods P-S-N曲线测定法比较研究
With the comparison of the phase curve by different models, PR-HV model had the highest accuracy and its calculation difference for pressure and composition of vapor phase were given. 6. 利用相图对四种模型计算效果进行了对比,其中PR-HV模型的关联精度最高,并给出了其详细的压力和汽相组成计算的偏差分析。
Including the compared with the simulation model, comparison of temperature curve with the specification limits, as well as the improvement of construction measures numerical deviation. 包括与仿真模型的对比,温度曲线与规范要求限值的对比,以及对引起数值偏差较大的施工措施改进方法。
The comparison between acceleration-frequency response curve of different conditions shows that for damped wheel, the effect on reducing vibration of damping layer attached to two sides is much better than to one side, and the more the attachment size, the better the effect. 通过对比各种工况的阻尼车轮加速度-频率响应曲线可知,对于阻尼车轮而言,两面都附着约束阻尼层的减振效果要远好于单面附着阻尼层的减振效果,且附着面积越大,其效果越好。
Pressure test of the valve is carried out on the marine general performance test bench of gearbox for the comparison of experimental pressure-opening position curve with computational one to validate the finite element analysis results. 在船用齿轮箱综合性能试验台上进行调压阀油压试验,对比分析压力-开口度曲线,验证流场有限元计算模型的合理性。
Computer simulation, phantom and in vivo study have all shown that more accurate quantitative T2 mapping, as well as higher SNR, is obtained by the proposed method in comparison with truncation curve fitting method. 计算机模拟仿真、体模实验和人体实验的结果均表明,较截断型曲线拟合方法,本文所提出的方法能得到信噪比更高、测量结果更准确的T2定量图谱。
With the comparison of the phase curve, PR-M model had the highest accuracy in low temperatures and its detailed difference were given. 7. 通过相图的比较,得知在低温下,PR-M模型的计算精度最高,并给出了其详细的计算偏差分析。