刘清海,博士,美国佐治亚理工学院博士后,福州大学数学与计算机科学学院教授,博士生导师。“福州大学--华为技术有限公司创新实验室”负责人。主要研究领域为图论及应用与组合优化等,在Journal of Combinatorial Theory, Series B, Journal of Graph Theory等SCI期刊发表学术论文20余篇。
Qinghai Liu, Xingxing Yu, Zhao Zhang, Circumference of 3-connected cubic graphs,Journal of Combinatorial Theory, Series B. (128)2018:134-159. (SCI)
Qing Cui,Qinghai Liu, 2-bisections in claw-free cubic multigraphs, Discrete Applied Mathematics 2018. (SCI)
Yanmei Hong,Qinghai Liu, Hong-Jian Lai, Characterization of Digraphic Sequences with Strongly Connected Realizations,Journal of Graph Theory.84 (2017): 191-201. (SCI)
Yanmei Hong,Qinghai Liu, Degree sequence for k-arc strongly connected multiple digraphs,Journal of Inequalities and Applications2017(1):169. (SCI)
Xia Hong,Qinghai Liu, Degree condition for completely independent spanning trees,Information Processing Letters116(2016): 644-648. (SCI)
Yanmei Hong,Qinghai Liu, Hong-Jian Lai, Ore-type degree condition of supereulerian digraphs,Discrete Mathematics339(2016)8:2042-2050. (SCI)
Fan Genghua, Yanmei Hong andQinghai Liu, Ore’s condition for completely independent spanning trees,Discrete Applied Mathematics.177(2014) 95-100. (SCI)
Yanmei Hong*,Hong-Jian Lai andQinghai Liu,Supereulerian digraphs,Discrete Mathematics, 330(2014) 87-95. (SCI)
Yanmei Hong, Xiaofeng Gu, Hong-Jian Lai, Qinghai Liu, Fractional spanning tree packing, forest covering and eigenvalues,Discrete Applied Mathematics213 (2016) :219-223.
Qinghai Liu, Yanmei Hong* and Hong-Jian Lai, Edge-disjoint spanning trees and eigenvalue,Linear Algebra and its Applications458(2014) 108-133. (SCI)
Qinghai Liu, Yanmei Hong*, Xiaofeng Gu, Hong-Jian Lai,Note on edge-disjoint spanning trees andeigenvalues,Linear Algebra and its Applications444(2014) 146-151. (SCI)
Qinghai Liu, Zhao Zhang, Yanmei Hong*, Weili Wu and Dingzhu Du, A PTAS for weak minimum routing cost connected dominating set of unit disk graph,Optimization, Simulation, and Control,Springer Optimization and Its Applications, Springer Science+Business Media New York, 2013. Book
Qinghai Liu, Xiang Li, Lidong Wu, Hai Du, Zhao Zhang*, Weili Wu, Xiaodong Hu, Yinfeng Xu: A New Proof for Zassenhaus-Groemer-Oler inequality.Discrete Math., Alg. and Appl. 4(2) 2012
Fenjin Liu,Qiongxiang Huang*,Jianfeng Wang,Qinghai Liu,The spectral characterization of -graphs,Linear Alg.Appl.437(7) 1482–1502,2012 (SCI)
Qinghai Liu, Zhao Zhang*, Zhihua Yu: Cyclic Connectivity of Star Graph.Discrete Math., Alg. and Appl.3(4) 433-442, 2011.
Hongjie Du, Weili Wu, Wonjun Lee,Qinghai Liu, Zhao Zhang, Ding-Zhu Du*, On minimum submodular cover with submodular cost.J. Global Optimization50(2): 229-234, 2011 (SCI)
Qinghai Liu, Xiaohui Huang, Zhao Zhang*, Optimally restricted edge connected elementary Harary graphs,Theoretical Computer Science,479(2013)131-138. (SCI)
Qinghai Liu, Zhao Zhang*, The existence and upper bound for two types of restricted connectivity.Discrete Applied Mathematics158(2010) 516-521. (SCI)
Zhao Zhang*,Qinghai Liu, Sufficient conditions for a graph to beλ-optimal with given girth and diameter.Networks55(2010) 119-124. (SCI)
Zhao Zhang*,Qinghai Liu, Deying Li: Two Algorithms for Connected R-Hop k-Dominating Set.Discrete Math., Alg. and Appl. 1(4) 485-498, 2009.
Qinghai Liu, Yanmei Hong* and Zhao Zhang, Minimally 3-restricted edge connected graphs.Discrete Applied Mathematics157(4) 685-690, 2009. (SCI)
Yanmei Hong*, Zhao Zhang andQinghai Liu, Edges of degree k in minimally restricted k-edge connected graphs.Discrete Mathematics309(13) 4448-4455, 2009. (SCI)
Yanmei Hong*,Qinghai Liuand Zhao Zhang, Minimally restricted edge connected graphs.Applied Mathematics Letter21(8) 820-823, 2008. (SCI)