The ability to grip unhatched eggs is a skill exploited by the ants Harpegnathos venator,as they care their brood in tun......

The purpose of this study was to investigate the effects of voids in tall buildings on the surrounding wind environment.......

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......

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......

In this paper, the concavity of closed geodesics proposed by M.Morse in 1930s is studied....