检索结果-南通市图书馆

Online Over Time Scheduling on Parallel-Batch Machines:A Survey

在线全文

学校读者我要写书评

暂无评论

Journal of the Operations Research Society of China 2014年第4期2卷 445-454页

作者： Ji Tian Ruyan Fu jinjiang yuan College of Sciences China University of Mining and TechnologyXuzhou 221116JiangsuChina School of Mathematics and Statistics Zhengzhou UniversityZhengzhou 450001China

Online scheduling is a rapidly developed branch in scheduling *** this paper,we present an extensive survey for online over time scheduling on parallel-batch *** open problems are proposed for further research.

关键词： Online scheduling Parallel-batch machines Competitive ratio

THE BANDWIDTH OF THE COMPLEMENT OF A K-TREE

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 1998年第4期13卷 451-454页

作者： yuan jinjiang AND LIN YIXUN Department of Mathematics Zhengzhou University Zhengzhou

Abstract The paper proves that if G is a k tree, then the bandwidth B(G) of the complement G of G is given by B(G)=n-k-1, when GK k+K n-k , n-k-2, otherwise.

关键词： Bandwidth k-tree complement

Crack growth behavior of SRR99 single crystal superalloy under thermal fatigue

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2008年第5期27卷 526-530页

作者： LIU yuan YU jinjiang XU Yan SUN Xiaofeng GUAN Hengrong HU Zhuangqi Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Graduate School of Chinese Academy of Sciences Beijing 100039 China

The thermal fatigue behavior of a single crystal superalloy SRR99 was investigated. Specimens with V-type notch were tested at the peak temperatures of 900, 1000, and 1100℃. The crack growth curves as a function of the number of cycles were plotted. With the increase of peak temperature, the crack initiation life was shortened dramatically. Through optical microscopy （OM） and scanning electron microscopy （SEM） observation, it was found that multiple small cracks nucleated at the notch tip region but only one or two of them continued to develop in the following thermal cycles. The primary cracks generally propagated along a preferential direction. Microstructure changes after thermal fatigue were also discussed on the basis of SEM observation.

关键词： single crystal superalloy thermal fatigue crack growth behavior dendrite orientation

THE NP-HARDNESS OF THE SINGLE MACHINE COMMON DUE DATE WEIGHTED TARDINESS PROBLEM

在线全文

学校读者我要写书评

暂无评论

Systems Science and Mathematical Sciences 1992年第4期5卷 328-333页

作者： yuan jinjiang (Department of Mathematics,Zhengzhou University,Zhengzhou 450052,China)

In this paper we prove that the single machine common due dateweighted tardiness problem is NP-hard.

关键词： Due date tardiness NP-complete

A Characterization of the Optimal p-sum Labellingsof Unit Interval Graphs

在线全文

学校读者我要写书评

暂无评论

运筹学学报 1998年第3期2卷 1-5页

作者： jinjiang yuan(Department of Mathematics, Zhengzhou University, Zhengzhou, 450052) 郑州大学数学系河南郑州

A labelling π of a graph G is regular if for every edge uv ∈ E(G), say π(u) < π(v),V(u,v) = {x ∈ V(G) | π(u) π(x) π(v)} is a clique of G. We show in this paper that, for every positive real number p, a labelli... 详细信息

关键词： Regular labelling Optimal p-sum labelling unit interval graph

MINIMUM PROFILE OF GRID NETWORKS

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Systems Science and Mathematical Sciences 1994年第1期7卷 56-66页

作者： LIN Yixun yuan jinjiang(Department of Mathematics, Zhengzhou University, Zhengzhou 450052, China)

ＭＩＮＩＭＵＭＰＲＯＦＩＬＥＯＦＧＲＩＤＮＥＴＷＯＲＫＳ￥ＬＩＮＹｉｘｕｎ；ＹＵＡＮＪｉｎｊｉａｎｇ（ＤｅｐｏｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｚｈｅｎｇｚｈｏｕ４５００... 详细信息

ＭＩＮＩＭＵＭＰＲＯＦＩＬＥＯＦＧＲＩＤＮＥＴＷＯＲＫＳ￥ＬＩＮＹｉｘｕｎ；ＹＵＡＮＪｉｎｊｉａｎｇ（ＤｅｐｏｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｚｈｅｎｇｚｈｏｕ４５００５２，Ｃｈｉｎａ）Ａｂｓｔｒａｃｔ...

关键词： Matrix graph profile.

Some Lower Bounds of Bandwidth Sum of Graphs with Applications

在线全文

学校读者我要写书评

暂无评论

应用数学 1996年第4期 536-538页

作者： yuan jinjiang(Department of Mathematics,Zhengzhou University,Zhengzhou,450052)Huang Qiongxiang(Department of Mathematics,Xinjiang Univerisity,Urumuqi,830046)

ＳｏｍｅＬｏｗｅｒＢｏｕｎｄｓｏｆＢａｎｄｗｉｄｔｈＳｕｍｏｆＧｒａｐｈｓｗｉｔｈＡｐｐｌｉｃａｔｉｏｎｓ￥ＹｕａｎＪｉｎｊｉａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉ... 详细信息

ＳｏｍｅＬｏｗｅｒＢｏｕｎｄｓｏｆＢａｎｄｗｉｄｔｈＳｕｍｏｆＧｒａｐｈｓｗｉｔｈＡｐｐｌｉｃａｔｉｏｎｓ￥ＹｕａｎＪｉｎｊｉａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｚｈｅｎｇｚｈｏｕ，４５００...

关键词： Labelling Bandwidth sum Lower bounds

关于Menger图和Menger数的若干结果

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数学物理学报（A辑） 2005年第1期25卷 93-97页

作者：原晋江郑州大学数学系郑州450052

该文研究Menger图和Menger数.主要结果如下(1)对任意的n≥4,n立方体Qn不是Menger图.解决了Sampathkumar提出的未解问题2.(2)如果G是一个偶图,则m(G)=β0(G),其中m(G)是G的Menger数,β0(G)是G的独立数.部分解决了Sampathkumar提出的未解... 详细信息

关键词： Menger集 Menger图 Menger数 NP-困难

MINIMUM FILL-IN PROBLEM OF GRAPHS

在线全文

学校读者我要写书评

暂无评论

Systems Science and Mathematical Sciences 1996年第3期9卷 193-197页

作者： yuan jinjiang (Department of Mathematics,Zhengzhou University, Zhengzhou 450052, China)ZHANG Heping (Department of Mathematics,Lanzhou University, Lanzhou 730000, China)

ＭＩＮＩＭＵＭＦＩＬＬ－ＩＮＰＲＯＢＬＥＭＯＦＧＲＡＰＨＳＹＵＡＮＪｉｎｊｉａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｚｈｅｎｇｚｈｏｕ４５００５２，Ｃｈｉｎａ）... 详细信息

ＭＩＮＩＭＵＭＦＩＬＬ－ＩＮＰＲＯＢＬＥＭＯＦＧＲＡＰＨＳＹＵＡＮＪｉｎｊｉａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｚｈｅｎｇｚｈｏｕ４５００５２，Ｃｈｉｎａ）ＺＨＡＮＧＨｅｐｉｎｇ（Ｄｅｐａｒ...

关键词： Graph fill-in fill-in number NP-complete