Registration efficiency of electrons for point sources and of delta-electrons in volume of fast ion tracks in solids

Registration of fast electron flux in solid state detector was studied. We considered spatial distributions over detector volume of three values - probability of local responses, dissipated energy and number of moving electrons. We made a definition of a registration efficiency for dissipated energy dose and for electron flux. They were calculated and compared for three cases in nuclear emulsion type-R2: plane and axial sources for a set of angles of electron emitting, and a track of fastio as a source of δ-electrons.     

近红外光谱图像处理的霉变稻谷检测方法

稻谷在储藏和运输过程中,在适宜的温湿度环境下极易发生霉变,导致大量的粮食浪费和巨大的经济损失,进而影响粮食安全.为解决传统的稻谷霉变检测存在的繁琐且耗时较长等不足,提出了基于近红外光谱图像处理和神经网络的稻谷霉变程度检测方法.首先,通过农业多光谱相机(Sequoia)和固定光源等设备,构建了霉变稻谷近红外图像数据采集平...     

Which sets are images of disk-algebra functions?

We give a characterization of those compact sets in the plane with finitely many holes that are images of disk-algebra functions. We also show that the image of the closed unit disk via a polynomial is, in general, not polynomially convex.