利用离散偶极近似方法计算散射体的电磁场。 DDA 方法，重要用于小颗粒的散射问题，很有用。-discrete dipole approximation calculation of the electromagnetic scattering body. DDA method, it is important for the scattering of small particles, very useful.

利用离散偶极炬算法计算不同形状粒子的电磁波散射特性-DDSCAT, a Fortran code for calculating scattering and absorption of light by irregular particles, has been jointly developed by Bruce T. Draine (Dept. of Astrophysical Sciences, Princeton Univer

A context-aware system is one that gracefully adapts to user environment changes, rendering its applications/services more personalized. Location has been long considered as the most important context and numerous