...关键字： 湘西金矿；变异函数；分形维数；BP神经网络；成矿预测[gap=889]Key words: Xiangxi gold deposit; variation function; fractal dimension; BP neural network; metallogenic prediction..
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model of variation function 变异函数模型
d-variation function 三维变异函数
semi-variation function 半变异函数
half variation function 半变差函数
point-variation function 点变差函数
linear variation function 线性变分函数
This paper give a simple method of modification of sectional area coefficient curve. with logical variation function, the method can satisfy the requirement of ship design, and example is given indicating its practicability.
本文提出一种简单直观的横剖面面积曲线(SAC)变换方法,给出合理的形变函数,能够在给定母型船船体SAC的情况下得到满足设计船要求的SAC,并给出具体算例,表明这种方法的实用性。
参考来源 - 船体NURBS曲线修改方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The paper also deduces factor Kriging equation set while decomposing variation function.
文中在对变差函数进行分解的同时，还推导出因子克里金方程组。
It is also proved as application that any bounded variation function can be seen as a differentiable function beside a set of arbitrary small measure.
作为应用，证明了任意有界变差函数都与某可微函数在除过测度任意小的集合外重合。
The paper gives the definitions of monotonic function, bounded variation function and absolute continuous function, and discusses the relationship of the three.
文章给出了单调函数、有界变差函数、绝对连续函数的定义并讨论了三者之间的关系。
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