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Layer-layout-based heuristics for loading homogeneous items into a single container

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Layer-layout-based heuristics for loading homogeneous items into a single container

Layer-layout-based heuristics for loading homogeneous items into a single container

作者/编辑:Author:… http://www.unjs.com 自然科学论文
  [Layer-layout-based heuristics for loading homogeneous items into a single container]Abstract:The container loading problem (CLP) is a well-known NP-hard problem. Due to the computation complexity, heuristics is an often-sought approach. This article proposes two heuristics to pack homogeneous rectangular boxes into a single container. Both algorithms adopt the concept of building layers on one face of the container, but the first heuristic determines the layer face once for all, while the second treats the remaining container space as a reduced-sized container after one layer is loaded and, hence, selects the layer face dynamically. To handle the layout design problem at a layers level, a block-based 2D packing procedure is also developed. Numerical studies demonstrate the efficiency of the heuristics. 作者: Author: WANG Zhou-jing[1]  LI Kevin W.[2] 作者单位: Department of Automation, Xiamen University, Xiamen 361005, ChinaOdette School of Business, University of Windsor, Windsor, Ontario N9B 3P4, Canada 期 刊: 浙江大学学报A(英文版)   ISTICEISCI Journal: JOURNAL OF ZHEJIANG UNIVERSITY SCIENCE A 年,卷(期): 2007, 8(12) 分类号: N949 O22 TP3 Keywords: Container loading problem (CLP)    Heuristic    Layer    Packing    Optimization    机标分类号: TN9 TH1 机标关键词: computation complexity    layout design 基金项目: Natural Sciences and Engineering Research Council of Canada (NSERC) under the Discovery Grant Program Layer-layout-based heuristics for loading homogeneous items into a single container[期刊论文]  浙江大学学报A(英文版) --2007, 8(12)The container loading problem (CLP) is a well-known NP-hard problem. Due to the computation complexity, heuristics is an often-sought approach. This article proposes two heuristics to pack homogeneous ...
Layer-layout-based heuristics for loading homogeneous items into a single container2
  第2篇 关于环境保护的论文:Effect of refining slag containing Ce2O3 on stee
  〖预览〗Abstract:The effect of pre-melting refining slag containing different contents of Ce2O3 on the absorption and modification of Al2O3 inclusion in an Al-killed steel was investigated through the slag/steel reaction experiment at 1600 ℃.It was found that the replacement of 10 wt.%Al2O3 with Ce2O3 for 50 wt.%CaO-33 wt.%Al2O3-7 wt.%MgO-10 wt.%SiO2 refining slag promoted the slag absorption ability of alumina inclusion,which made the total oxygen content determined by infrared absorption method decrease from 100 to 25 ppm in 15 min.The Mg-Al-Ce-O type inclusion was al……【全文阅读:关于环境保护的论文:Effect of refining slag containing Ce2O3 on stee
Layer-layout-based heuristics for loading homogeneous items into a single container3
  第3篇 Toxicological effects and risk assessment of lanthanum ions on leave
  〖预览〗Abstract:Viciafaba L.seedlings were hydroponically cultivated in 0-12 mg/L of extraneous lanthanum (La) for 15 d to investigate ecotoxicological effects and risk assessment of rare earth elements (REEs).The results showed that reactive oxygen species (ROS) production such as superoxide radical (O2-) and hydrogen peroxide (H2O2) were overproduced at higher concentrations of La,resulting in oxidatively modified proteins and shoot growth retardation.While,superoxide dismutase (SOD),catalase (CAT),ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) isoenzymes w……【全文阅读:Toxicological effects and risk assessment of lanthanum ions on leave】   〔Layer-layout-based heuristics for loading homogeneous items into a single container
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