Approximate limit sampling data using fuzzy - tree model 模糊樹模型對有限樣本集的逼近
Firstly part of quadratic term of taylor series is chosen ; a low - dimension surface is used to approximate limit state surface ; and the modified reliability formula is derived 首次選取泰勒級數(shù)的部分二次項,用一個距原點最近點處擬合的超低維曲面近似極限狀態(tài)面。
In an effort to determine approximate limits of porosity values , slichter and , later , graton and fraser computed the porosity of various packing an - angements of uniform spheres 為了求得孔隙度的近似界限,斯里西特以及后來的哥拉登和弗雷塞計算了均一球粒在不同堆積形式f的孔隙度。