At present, most of the passive radar system researches utilize FM radios, TV broadcasts, navigation satellites,etc. as ......

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......

目的探讨系统护理干预在非合作儿童预防接种中的应用及疗效评价，为不合作儿童预防接种提供指导。方法随机将患儿分为2组，实验组运用......

In wireless ad hoc networks cooperation among nodes cannot always be assumed since nodes with limited resources and diff......