The paper presents a staggered-grid any even-order accurate finite-difference scheme for two-dimensional (2D), three-component (3C), first-order stress-velocity elastic wave equation and its stability
Recent progress of study on gas electron multiplier (GEM) has been described. Due to its fast time re-sponse and excellent position sensitivity, the GEM will find wide applications in particle physics
Laminaria gametophyte was greatly influenced by light in its growth and development. Using light-emitting diodes (LED) as blue and red light sources, we analyzed the light effect on gametophytes devel
We collected centric diatom Stephanopyxis palmeriana samples in coastal waters of Xiamen for charac- teristic red light/far red light (R/FR) phytochrome reactions to identify its photoreceptor in the
Focused on the seed region selection and homogeneity criterion in Seeded Region Growing (SRG), an unsupervised seed region selection and a polynomial fitting homogeneity criterion for SRG are proposed
This paper presents a novel face recognition algorithm. To provide additional variations to training data set, even-odd decomposition is adopted, and only the even components (half-even face images) a
A practical approach of measurement calibration is presented for obtaining the true area of the photographed objects projected in the 2-D image scene. The calibration is performed using three circular
A comprehensive research on key issues of the multimedia set-top-box used in active TV is conducted. Meanwhile a practical architecture for the multimedia set-top-box based on PC platform is designed.
常规的施药方法,由于不考虑树与树之间的间距、树冠的大小与形状,大部分农药未能发挥效用,流失非常严重,喷撒出去的农药只有极少部分能到达要防治的靶标上,从而造成了巨大的农药浪费,且带来了农药安全、环境污染等诸多问题。笔者在分析农药的喷药量与树形之间关系的基础上,对原有的基于BP神经网络的树形识别系统进行了改进设计,重点对该网络的输入层、隐含层及输出层进行了理论分析和试验研究,最终确定了由15个节点组成