隐写术被广泛应用于安全通信特别是军事间谍活动已经有很长一段时间。隐写术将敏感信息隐藏在一个载体(例如图片)中,这些载体的冗......

A uniaxial concrete constitutive model considering the bond-slip effect is proposed and its finite element analysis (FEA......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Erbium-doped holey fiber with hexagonal lattice was modeled by using effective index method.In order to calculate the eq......