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and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China 4) Ordnance Industry Planning Project Institute of China, Beijing 100053, China摘 要: the market potential of rare earthmaterials in the world.A research project to be carried out as early as possible in China on the SOFC tech-nology will be far-reaching.High Temperature Solid Oxide Fuel Cells(SOFC)
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来源: 《Journal of Rare Earths1993年第3期》——魏秋明 朱时珍 夏定国 刘庆国
一种求解产品设计项目调度问题的启发式方法卢睿,王成恩摘 要:针对产品设计项目(product design project,PDP)调度问题,考虑任务工期的随机性特点和任务的返工可能性,扩展了传统的优先规则计算方法.提出了一种启发式调度方法,采用扩展优先规则和随机串行调度生成方案,以项目交付期最小为目标构造调度方案.通过抽样得来的随机工期向量获得近优调度策略.在不同工期可变幅度下对方法进行测试,实验结果验证了该方法的有效性,并显示在任务工期的不确定程度和任务返工可能性较大时,采用随机调度方法解决PDP的调度问题可以获得更高质量的调度方案.关键词:随机调度;项目调度;产品设计项目;返工;启发式;......
巴林铝业公司将成为工业发达国家最大单一原铝企业王祝堂摘 要:<正>巴林铝业公司(Aluminium Bahrain,Alba)正线6工程(Line 6 project),共有424台电解槽,采用EGA DX+Ultra技术,计划于2019年初投产,生产能力540kt/a,届时公司原铝总生产能力可达1500kt/a,成为除中国以外全球最大的单一铝厂.2016年巴林铝业公司原铝产量971. 42kt,出口约1/3,302. 92kt,金额738M美元,其余的除加工为附加值高的轧制产品外,大部分铸造关键词:......
Resistance characteristics of the ball packed-bed regenerator of the new-type swirl flow hot blast stoveHongzhi Guo, Xiaohu Cheng, and Shuchen ZhangDepartment of Thermal Engineering, University of Science and Technology Beijing, Beijing 100083, China摘 要:<正> A renovation project of miniaturization and high efficiency is provided for the hot blast......
) X80 pipeline steel applied in the 2nd West-East Gas Pipeline project with and without preload. The results show that cracks could initiate and propagate in X80 pipeline steel in near-neutral pH......
parameters on the screw distributor job performance were analyzed,and the unstable area,meta-stable area and stable area were determined.In the project,the full-scale test in actual project was conducted......
Laboratory of Deep-sea Manned Vehicles, Wuxi 214082, China) Abstract: In this paper, the background of project approval arising from the application of Jiaolong manned submersible is reviewed in detail, and the new model of project organization and implementation by the owner, China Ocean Mineral Resources R&D Association is explored. The technical advantages of Jiaolong and its application in ocean......
基于关键链的矿井建设计划的编制与研究 陈道贵1,李国清1,胡乃联1 (1.北京科技大学) 摘要:关键链技术不仅考虑了任务间的紧前,紧后关系约束,还考虑了任务间的资源冲突,并将组织行为中的一些结论应用到了项目进度管理之中,通过设置时间缓冲区,降低因资源而引起的进度风险,从而弥补了传统项目管理方法的不足,为项目进度制定和管理提供了一种全新的方法.针对矿山建设工程的特点,在对比分析了传统项目进度计划编制方法的基础上,引入关键链项目管理(CCPM)方法,设计了基于关键链技术的编制矿井建设计划的流程.同时,依托MineSched软件和MS Project为软件平台,将该方法运用于某矿的矿井建设计划编制中.采用此方法能快速根据优化的目标及资源约束条件生成相应方案,实现设计,计划,优化和管理的一体化,使整个计划模型与工程系统模型一致,便于调整和管理,人工或计算机处理效率高. 关键词:矿井建设......
section height were analyzed as well. By terms of the practice project analysis, the horizontal section height increases with the increase of dip angle β and thickness of coal seam M. Dip angle of coal seam......