DDA（离散偶极矩方法）计算各种形状的粒子散射问题，源程序是C语言编的-DDA (Discrete dipole moment method) calculation of scattering particles of various shapes, source code is compiled by C language

根据Ecotect 模拟的12种不同的建筑形状进行能量分析，数据集包括768个样本和8个特征属性，旨在预测房屋的热负荷和冷负荷。BP神经网络(According to the 12 different building shapes simulated by Ecotect, we carry out energy analysis. The dataset includes 768 samples and 8 characteristic attributes, aiming at predi