曲线拟合

We use a technique of dynamic waveform matching to build cross-well stratigraphic correlation relationships and automatically draw a path diagram of the cross-well stratigraphic contrast through piecewise line fitting, log character extraction, match cost calculation, and etc.

动态波形匹配算法是本次研究采用的主要算法，它能够很好地建立井间地层之间的对比关系，通过曲线拟合、特征提取、匹配代价计算等步骤，自动绘制井间地层对比的路径图解。

The realization of double flow rate well testing techniques is descript in this paper and the way of well testing data interpretation is also provided from the normal analysis and double logarithmic curve.

描述了二流量试井工艺的实现，从常规分析和双对数曲线拟合两个方面，给出了二流量试井的资料解释分析方法，分析认为二流量试井同样可以计算出正常关井测压力恢复资料所解释的油藏及流体参数。

There will be lots of observational data in the field experiments, the temperature data in the other bores at the same elevation of the leakage passage is selected and curve fitted under the logarithmic equation model. As a result, the radius of the leakage passage can be calculated.

而现场测试试验中有大量温度观测数据，提取与渗漏通道同一高程其它钻孔的温度值，并将这些实验数据在对数函数理论模型下进行曲线拟合，从而可以计算出渗漏通道半径。

A model of temperature field in surface layers during sliding was set up based on the law of heat conduction. And, a computer simulation for thermometric data which were real-time recorded by a thermal video system was carried out by using a mini-computer according to the model. There was an ideal fit between the measured data and the calculated curve.

在热传导方程的基础上建立了摩擦磨损表面层的温度场模型，并用该模型在微机上对红外热象测温结果进行了计算机模拟，测量数据与计算曲线拟合理想。

The theoretical plasma concentration versus time was calculated for all patients on the basis of the pharmacokinetic models described by Sheiner et al. Predicted effect versus time was calculated by following the pharmacokinetic-pharmacodynamic link model. The Ke0 was estimated by fitting a sigmoid cure. Group B was given the drug in a bolus of 2 mg.kg-1 and the Ke0 was calculated according to the method reported by Minto et al.

22例ASA ⅠⅡ级择期手术患者，A组(n=11)持续输注罗库溴铵0.03 mg·kg-1·min-1直至4个成串刺激降至20% 30%，B组(n=11)单次注射罗库溴铵2 mg·kg-1.A组血浆药物浓度用Sheiner等报道的药代动力学参数模拟计算，预测效应根据药代动力学-药效学关系公式换算，Ke0通过S型曲线拟合计算。B组采用Minto等提出的方法计算。

Especially, the Hill coefficient is considered not any physiological meanings in the mathematics model usually used in fitting pharmacodynamics S dose-effect curve, but the analogous parameter in the accumulation normal distribution function has definite physiological meanings, and indicate the relationship between pharmacology and pharmacodynamics.

特别地，在常用于药效学S型剂量效应曲线拟合的数学模型中，其Hill系数被认为没有任何生理学含义，而累积正态分布函数中的相应参数却有明确的生理学含义，从数学上体现了药理与药效的内在联系。

It is devised based on iterative curve fitting where orthogonal polynomials are used.

这种算法设计利用基于正交多项式的迭代曲线拟合，可以在没有人为干预的情况下自动处理吸收和发射光谱。

Finally,the mathematical expression be given outby curve fitting the simulation result base on the polynomial least square method.

最后利用最小二乘法对模拟结果进行曲线拟合得出收缩量与影响因素之间的函数关系，给出了数学表达式。

By applying the accumulative method which is a new technique for fitting a curve to parameter estimation of GM (0, N), it avoids complicated matrix operation, reduces operation time and keeps high accuracy and many model characters. Thus it is of great benefit to practical application.

通过将累积法这种新的曲线拟合技术引入到GM（0，N）模型的参数估计之中，避免了复杂的矩阵运算，减小了运算量，同时精度高且不改变模型的许多性质，对于实际应用有一定的意义。

Methods Exponential curve was employed in studying time series of typhoid and paratyphoid （ 1997 - 2003 ） and incidence rate of year 2004 was predicted based on the prediction model.

对伤寒、副伤寒发病率时间序列（1997～2003）采用指数曲线拟合，并对2004年伤寒、副伤寒疫情作出预测。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。