曲线拟合

In order to let the moving robot be able to keep stability in the course of motion , a method for matching the path of robotic motion by the use of cubic spline curve under the environment of duad tree modeling was put forward .

为了使移动机器人在运行过程中能够保持平稳，在四叉树建模环境下，提出用三次样条曲线拟合机器人运动路线的方法。

With the SPSS 11.0 statistic software, correlation ^egression and curve estimation analysis have been carried out on Guangzhou Ports cargo sources and production capability. At 95% confidence, it comes such a conclusion that Guangzhou Port has sufficient cargo sources but will become incapable in production.

案例分析围绕港口生产发展速度下降的原因展开调查，并应用 SPSS11.0统计软件包，对广州港货源和生产能力情况进行相关分析、曲线拟合分析和假设检验，在5％置信度上得出&广州港货源充足但港口生产能力不足&的结论。

In this model, the monitored acoustic emission information is changed into prediction data based on the gray theory, and the Prediction data are trans-formed into an essential format of cusp catastrophic model via the least-square principle curve fitting and the differential coefficient homeomorphous change.

首先运用灰色理论对声发射监测数据进行处理，得到预测数据，运用最小二乘曲线拟合展开，再通过微分同胚变换，转换为尖点突变模型的基本形式，从而建立了灰色突变预测模型。

Firstly, data processing method based on gray theory is used to change acoustic emission information into prediction data. Then prediction data is transformed into essential format of cusp catastrophic model by the least squares principle curve fitting and differential coefficient homeomorphous change. Finally, the gray and catastrophic prediction model is put forward to forecast failure time of rock slope.

首先运用灰色理论对声发射监测数据进行处理，得到预测数据，运用最小二乘曲线拟合展开，再运用微分同胚变换，转换为尖点突变模型的基本形式，建立灰色突变预测预报模型，从而对崩塌的时间进行预报。

Based on adsorption theories, the Langmuir model and the Polanyi Poten- tial theory were used for correlating the equilibrium data of the isothermic adsorption for the zeolite 13x-Water pair.

本文根据吸附理论，利用朗格缪尔模型和巴兰尼吸附位能理论模型对沸石13X-水的实测平衡数据进行等温吸附曲线拟合。

On the basis of the data from four seasonal oceanographic censuses in the East China Sea（23°30′-33°N,118°30′-128°E） in 1997-2000,the paper studies on adaptation and ecotype of Ostracoda in the East China Sea through curve fitting,forming mathematical model,calculating optimal temperature and salinity,consulting geographic distribution based on synchronous data of abundance and environmental factors.

根据1997-2000年东海23 30′-33 N，118 30′-128 E海域4个季节海洋调查资料，用浮游介形类物种丰度和同步表层温、盐度数据进行曲线拟合，构造数学模型，计算介形类分布最适温度和盐度值，并参考其地理分布和生态适应特征分析，确定东海浮游介形类主要物种的生态类型。

The fresh chicken feces were obtained from different age 18 healthy chicken, and were not detectedchlortetracycline. The mixture standard solution of CTC and OTC was added in fresh chicken feces at the concentration of 0.5, 1.0 and 4.0ug/ml respectively. The chicken feces were divided to two groups,one were put in the incubator under photophobic condition; another were under the natural illumination.Samples were collected after 0, 0.5, 1, 2, 3, 5, 7, 9, 12 and 15 days, The concentration of chicken feceswas determined by HPLC. According to the theory of degradation kinetics, we fitted the changed trendof concentrations in chicken feces under different time and studied the degradation characteristics ofchlortetracycline in chicken feces.

选取不同日龄健康鸡18只，实验期新鲜鸡粪，，经检测不含四环素类药物，然后加入金霉素标准液，使得各样品中制得的相应药品的浓度为0.5ug／mL、1.0ug／mL、4.0ug／mL，分为两个实验组，第1组放入培养箱中避光黑暗条件下；第2组置于室外自然光下，定时取样，取样时间为0、0.5、1、2、3、5、7、9、12和15d，鸡粪中药物的浓度用本实验建立的高效液相色谱法测定，根据药物降解动力学原理，对鸡粪中药物的浓度随时间的变化趋势进行曲线拟合，研究金霉素在环境鸡粪中的降解动态规律。

We found that CTC in chicken feces were nearly seldom degraded in photophobic condition.After 15 days, the degradntion rate of CTC at three different concentrations was 5.93％, 7.36％, 6.20％,respectively. But under the natural illumination, the degradation of CTC in chicken feces was very fast.After 15 days, the degradation rate of CTC at three different concentrations was 98.62％, 89.53％,95.98％, respectively.

在避光条件下鸡粪中的金霉素都比较稳定，经过15d的降解，三个不同初始浓度的药物降解幅度分别为：5.93％、6.20％和7.36％；而在自然光照条件下，鸡粪中金霉素降解都较快，在15d的试验期内，降幅达到89.53％、95.98％和98.62％，将鸡粪中金霉素浓度随时间的变化趋势进行曲线拟合，可知这种变化趋势符合一级动力学方程Ct=C_0e~。

The results from the verification and analysis of dune moisture simulated data showed that the precision of root uptake rate was higher,and it was able to indicate the regularity of water uptake during the rainless period,the predicted moisture distribution curve in the dune profile during Nitraria tangutorum growth season by the use of mathematical model was basically consistent with the measured one.

沙丘水分动态模拟结果的验证与分析表明：根系吸水率精度较高，能较正确反映无雨时段根系吸水规律；用所建数学模型预测的白刺生长期沙丘剖面含水量与实测值分布曲线拟合较好。

This paper introduces eight methods of tlme-frequency analysis, such as Hilbert transform, Hilbert-Huang transform, sine curve fitting, Ricker wavelet matching, short time Fourier transform, wavelet transform, S transform and Cohen methods, This paper explains the merits and defects of those methods from the time resolution, frequency resolution and the adaptive ability of multi-frequency signals.

本文介绍了Hilbert变换、Hilbert—Huang变换、正弦曲线拟合、雷克子波匹配、短时傅立叶变换、小波变换、S变换以及Cohen娄这八种方法，并从时间分辨率、频率分辨率，以及对多频率成份信号适应能力等各方面阐述了各种方法的优缺点，对其中的一些方法结合了理论记录进行了试算，进一步阐述了这些方法的长处和不足之处。

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。