曲线拟合

The yield curve in q direction in π plane is a curving triangle that obtained from the true-triaxial test data of Chongqing red clay.

用重庆红粘土真三轴试验数据拟合得到偏平面上的剪切屈服曲线为一曲边三角形。

Segmentation and extraction of the target feature points from the unregistered, noisy data set of human body scanning and measuring are discussed. We have fitted the noise scanned data line with KS principal curve, which is based on the K-means theory. The crossing zero of curvature was used to segment and estimate the position of target feature points. And optimization scheme named variable fuzzy partition is also presented to improve the searching for local feature area.

使用基于K-means思想的KS主曲线算法，对国家人体尺寸测量工作中产生的带噪声扫描线数据集合进行非线性拟合，并依据曲率分布特征提出对目标特征点空间位置进行模糊分区估计的方法；同时提出了变量化模糊分区的优化策略，大幅度地提高了局部特征区域搜索的效率。

The innovation of the dissertation is that by conducting principal component analysis of term structure of China, I find the factors which affect the dynamic behavior of interest rates of different maturities are different, so using short, medium-term rate and long-term rate as two factors to build a two-factors model is reasonable way to modeling the dynamic of interest rates in China market.

本文的创新之处是：通过对我国国债利率变动的主成分分析，发现影响不同期限利率变动的因素并不相同，并据此提出用中短期利率和长期利率作为驱动收益率曲线变动的两个因素，建立双因素模型来拟合中国市场利率的变动。

The established models in which annual precipitation was incorporated as the principal variable indicate a very closely correlation between forest productivity and its corresponding climatic factors,allowing to simulate distribution pattern of actual forest productivity effectiv...

结果表明：在所构建的模型中，除海拔高度与净生产力的相关模型外，其它模型均有较高的实用价值，模型的拟合曲线变化，基本反映了中国森林现实生产力的地理分布格局；中国森林生产力的分布格局主要取决于气候环境中的水热条件，水分条件是决定中国大部分地区森林生产力水平和地理分布格局的主导因素；根据7个GCMs大气环流模型预测合成的2030年的气候情景，研究气候变化对中国森林生产力影响的结果是：气候变化并没有改变中国森林第一性生产力的地理分布格局，即从东南向西北森林生产力递减趋势不变，但不同地域的森林生产力有不同程度的增加。

Our study shows that it is a good choice to apply generalized rational parametric curve to interpolate and fit unorganized data, because it provides higher numerical stability by appropriately adjusting the support of basis functions.

最后应用广义有理参数曲线对散乱数据进行插值拟合，它可以通过调整基函数的支撑域来优化方程的系数矩阵，因此提供了更高的数值稳定性。

Also,by nonlinear curve fitting and regression on the experimental data,the dynamic recrystallization model of 20SiMn was established.

通过对实验数据进行拟合回归分析，建立了20SiMn钢的动态再结晶模型，并提出了基于金属材料流动应力曲线的动态再结晶体积比例测量方法。

The curve regression equation obtained by computer has big correlation coefficient and small calculation error.

用计算机拟合获得的曲线回归方程相关系数大，计算误差小。

It is successful to obtain the S-N curve by linear regression from the relative coefficient of low temperature fatigue experimental data. Different safety fatigue life can be estimated according to different safety probability.

从低温疲劳实验的相关系数可以看出，用线性拟合来回归中值S-N曲线是成功的，而且根据不同的安全概率，可以计算出不同的安全疲劳寿命。

Via sampling test, comparing model of stepwise regression, calculating curve and forecast, we may know: these models is better and can be applied directly into practical safety monitoring work.

通过抽样测试法测试、并与建立的逐步回归模型比较以及拟合曲线和预测分析均表明：采用上述模型有很好的效果，可直接应用于实际工作中。

Rupture of fractal curves is controled using support vector machine function regression in the later period of fractal interpolation.

为消除分形插值曲线的断裂和周期现象，论文提出在分形插值的后期使用基于统计学习理论的支持向量机函数拟合方法。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！