The study of oxide-aperture influence on threshold current and differential resistance shows that lower threshold current can be obtained with a smaller oxide-aperture diameter.
研究了氧化孔径对阈值电流和微分电阻的影响，结果表明较小的氧化孔径可以获得低的阈值电流。
2
By using differential geometry property of small object of infrared image, computing minimal normal curvature which is used as the threshold to obtain candidate objects for small target.
利用图像小目标的微分几何特性，计算图像的最小法向曲率，并以此为阈值，获得小目标的候选对象。
3
Deviation in localization of a sound source and differentialthreshold of sound source position were studied on 43 and 60 subjects, respectively.