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[会议论文] 作者：Jiansheng Cai,
来源：第六届全国组合数学与图论大会 年份：2014
A vertex coloring of a graph G is called r-acyclic if it is a proper vertex coloring such that every cycle D receives at least min{|D|,r} colors.The r-acyclic c...
[会议论文] 作者：Jizhi Guo,Jiansheng Cai,Lihui Zhuang,Liangmei Jiang,Jianwei Wang,Yang Wang,
来源：中华预防医学会第三届学术年会暨中华预防医学会科学技术奖颁奖大会、世界公共卫生联盟第一届西太区公共卫生大会、全球华人公共卫 年份：2009
Objectives This article aims to gain a greater understanding of the psychological stress of migrants from The Three Gorges area who settled down in Shandong province, and to explore the experiences of...
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