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浅谈“338”管道巡线法在管道巡护中的应用 被引量:2
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作者 肖斌 肖昀鹏 《化工管理》 2014年第24期160-160,共1页
据统计,我国每年因为输油管线问题而导致的经济损失就高达几十亿。2013年11·22青岛输油管道爆炸事件直接经济损失就达7.5亿元,步入21世纪以后,随着我国经济发展对能源的依赖性越来越强以及近几年管道建设的快速发展,我国石油天然... 据统计,我国每年因为输油管线问题而导致的经济损失就高达几十亿。2013年11·22青岛输油管道爆炸事件直接经济损失就达7.5亿元,步入21世纪以后,随着我国经济发展对能源的依赖性越来越强以及近几年管道建设的快速发展,我国石油天然气管道安全面临的形势也更加严峻,怎样有效地缓解这种局面,成为石油管道保护工作人员普遍思考的一道难题。研究采用文本分析与举例论证相结合的方法,就"338"巡线法在管道巡护中的应用进行研究,旨在探索出强化管道企业管线巡护的有效途径。研究表明:"338"巡线法在加强管线巡护,提升管线安全性等方面确实具有相当积极的作用。 展开更多
关键词 “338”线法 三色 八字线方针
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道光年间热河塞外行宫的裁撤及重点陈设移贮承德避暑山庄
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作者 薛辉 《沈阳故宫博物院院刊》 2013年第1期73-77,共5页
承德避暑山庄是清帝北巡和木兰秋狝时驻跸的一座最大行宫,它起建于康熙朝,经89年修筑完善,成为了气势恢宏、闻名海内外的皇家园林建筑群。而据史料记载,清帝北巡时,曾沿途修建了多处行宫,只不过这些行宫规模很小,由于诸多原因遭到毁坏,... 承德避暑山庄是清帝北巡和木兰秋狝时驻跸的一座最大行宫,它起建于康熙朝,经89年修筑完善,成为了气势恢宏、闻名海内外的皇家园林建筑群。而据史料记载,清帝北巡时,曾沿途修建了多处行宫,只不过这些行宫规模很小,由于诸多原因遭到毁坏,或废弃、或裁撤,行宫建筑已不存。据《钦定热河志》记载,避暑山庄之外的行宫有'喀喇河屯行宫、王家营行宫、常山峪行宫、巴克什营行宫、两间房行宫、钓鱼台行宫、黄土坎行宫、中关行宫、什巴尔台行宫、波罗河屯行宫、张三营行宫、济尔哈朗图行宫。 展开更多
关键词 巡时 行宫 承德避暑山庄 喀喇河屯 热河 建筑群 史料 两间房
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Multi-Objective Cooperative Salvo Attack Against Group Target 被引量:7
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作者 ZENG Jie DOU Lihua XIN Bin 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2018年第1期244-261,共18页
This paper proposes a solution for the problem of cooperative salvo attack of multiple cruise missiles against targets in a group. Synchronization of the arrival time of missiles to hit their common target, minimizing... This paper proposes a solution for the problem of cooperative salvo attack of multiple cruise missiles against targets in a group. Synchronization of the arrival time of missiles to hit their common target, minimizing the time consumption of attack and maximizing the expected damage to group targets are taken into consideration simultaneously. These operational objectives result in a hierarchical mixed-variable optimization problem which includes two types of subproblems, namely the multi-objective missile-target assignment(MOMTA) problem at the upper level and the time-optimal coordinated path planning(TOCPP) problems at the lower level. In order to solve the challenging problem, a recently proposed coordinated path planning method is employed to solve the TOCPP problems to achieve the soonest salvo attack against each target. With the aim of finding a more competent solver for MOMTA, three state-of-the-art multi-objective optimization methods(MOMs),namely NSGA-II, MOEA/D and DMOEA-εC, are adopted. Finally, a typical example is used to demonstrate the advantage of the proposed method. A simple rule-based method is also employed for comparison. Comparative results show that DMOEA-εC is the best choice among the three MOMs for solving the MOMTA problem. The combination of DMOEA-εC for MOMTA and the coordinated path planning method for TOCPP can generate obviously better salvo attack schemes than the rule-based method. 展开更多
关键词 Coordinated path planning missile-target assignment multi-missile salvo attack multiobjective optimization
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