gradiomanometer

A new kind of downhole gradiomanometer-photoelectric gradiomanometer has been designed based on the characters of downhole gradiomanometer.

分析了光学材料的光弹性效应及线偏振光的干涉理论,结合井下流体压差计的特点,设计了一种新型的井下流体密度计———光电流体压差密度计。

Reliability is poor and precision is not high while using traditional differential pressure densimeter.

传统的泥浆池差压式密度计可靠性差,精度不高。

In this paper, we are mainly concerned with uniform convergence and mean square convergence of the error-density estimator of nonparametric regression in the i.

d情况下非参数回归的误差密度估计的一致收敛和均方收敛,给出了一定条件下误差密度的估计量,fn(x)的一致收敛速度和均方收敛速度。

In this paper,we are mainly concerned with the rate of convergence of the error-density estimator of nonparametric regression in continuous time.

本文研究了连续时间下非参数回归的误差密度估计的收敛速度 ,给出了一定条件下误差密度的估计量 ^fT(x)的均方收敛速度 ,详细证明了以下重要结果 :E ^fT(x) -f(x) 2 =O(T-1/ 4)其中f(x)表示误差过程 {et,t≥ 0 }的未知密度 。