In building Shanghai Synchrotron Radiation Facility(SSRF), in order to reduce or eliminate the unnecessary sources of be......

在计算波导截止频率时,激励源的设计必须与波导中通过信号的模式相匹配.以矩形波导为例,用二维时域有限差分法(2D-FDTD)提出激励源......

脉动风速随机Fourier谱模型为脉动风速模拟提供了一条基于物理的建模途径.为了实现对这一模型基本参数概率分布的合理建模,阐述了......

介绍了一种节能电路，对电源进行简单管理，在待机时停止对主IC供电，达到待机功耗的最小化。利用电视机遥控的编码规则，在引导码的4．5ms低......

Filter backprojection is an important method of image reconstruction technique in clinical nuclear medicine imaging. Bec......

Obesity is an independent risk factor for chronic diseases such as diabetes, cardiovascular diseases and certain cancers......