In equipment integrated logistics support(ILS), the supply capability of spare parts is a significant factor. There are lots of depots in the traditional support system, which makes too many redundant spare parts and ...In equipment integrated logistics support(ILS), the supply capability of spare parts is a significant factor. There are lots of depots in the traditional support system, which makes too many redundant spare parts and causes high cost of support. Meanwhile,the inconsistency among depots makes it difficult to manage spare parts. With the development of information technology and transportation, the supply network has become more efficient. In order to further improve the efficiency of supply-support work and the availability of the equipment system, building a system of one centralized depot with multiple depots becomes an appropriate way.In this case, location selection of the depots including centralized depots and multiple depots becomes a top priority in the support system. This paper will focus on the location selection problem of centralized depots considering ILS factors. Unlike the common location selection problem, depots in ILS require a higher service level. Therefore, it becomes desperately necessary to take the high requirement of the mission into account while determining location of depots. Based on this, we raise an optimal depot location model. First, the expected transportation cost is calculated.Next, factors in ILS such as response time, availability and fill rate are analyzed for evaluating positions of open depots. Then, an optimization model of depot location is developed with the minimum expected cost of transportation as objective and ILS factors as constraints. Finally, a numerical case is studied to prove the validity of the model by using the genetic algorithm. Results show that depot location obtained by this model can guarantee the effectiveness and capability of ILS well.展开更多
目的:分析近十年病毒性肝炎药物经济学领域研究进展,对已发表的文献进行计量学分析,探讨研究热点、发展趋势。方法:以Web of Science核心数据库为数据源,应用CiteSpace和VOSviewer软件对病毒性肝炎在药物经济学领域的相关文献进行可视...目的:分析近十年病毒性肝炎药物经济学领域研究进展,对已发表的文献进行计量学分析,探讨研究热点、发展趋势。方法:以Web of Science核心数据库为数据源,应用CiteSpace和VOSviewer软件对病毒性肝炎在药物经济学领域的相关文献进行可视化分析。结果:2012~2021年共纳入926篇SCI文献,美国、英国、中国为发文量前三的国家,布里斯托大学、斯坦福大学是研究该领域的重要机构,发文量最高的作者是Peter Vickerman。被引频次最多的文章是“Estimation of stage-specific fibrosis progression rates in chronic hepatitis C virus infection:a meta-analysis and meta-regression”,引文量最高的机构是世界卫生组织,被引频次最高的期刊是Hepatology,关键词分析显示,成本效果、丙型肝炎、病毒感染为近年来主要的研究热点。结论:本研究基于文献计量学可视化图谱方法,发现病毒性肝炎在药物经济学领域近十年研究热点主要集中在预防筛查、药物治疗、经济负担以及吸毒患者相关治疗上。展开更多
基金supported by the Science Challenge Project(TZ2018007)the National Natural Science Foundation of China(71671009+2 种基金 61871013 61573041 61573043)
文摘In equipment integrated logistics support(ILS), the supply capability of spare parts is a significant factor. There are lots of depots in the traditional support system, which makes too many redundant spare parts and causes high cost of support. Meanwhile,the inconsistency among depots makes it difficult to manage spare parts. With the development of information technology and transportation, the supply network has become more efficient. In order to further improve the efficiency of supply-support work and the availability of the equipment system, building a system of one centralized depot with multiple depots becomes an appropriate way.In this case, location selection of the depots including centralized depots and multiple depots becomes a top priority in the support system. This paper will focus on the location selection problem of centralized depots considering ILS factors. Unlike the common location selection problem, depots in ILS require a higher service level. Therefore, it becomes desperately necessary to take the high requirement of the mission into account while determining location of depots. Based on this, we raise an optimal depot location model. First, the expected transportation cost is calculated.Next, factors in ILS such as response time, availability and fill rate are analyzed for evaluating positions of open depots. Then, an optimization model of depot location is developed with the minimum expected cost of transportation as objective and ILS factors as constraints. Finally, a numerical case is studied to prove the validity of the model by using the genetic algorithm. Results show that depot location obtained by this model can guarantee the effectiveness and capability of ILS well.
文摘目的:分析近十年病毒性肝炎药物经济学领域研究进展,对已发表的文献进行计量学分析,探讨研究热点、发展趋势。方法:以Web of Science核心数据库为数据源,应用CiteSpace和VOSviewer软件对病毒性肝炎在药物经济学领域的相关文献进行可视化分析。结果:2012~2021年共纳入926篇SCI文献,美国、英国、中国为发文量前三的国家,布里斯托大学、斯坦福大学是研究该领域的重要机构,发文量最高的作者是Peter Vickerman。被引频次最多的文章是“Estimation of stage-specific fibrosis progression rates in chronic hepatitis C virus infection:a meta-analysis and meta-regression”,引文量最高的机构是世界卫生组织,被引频次最高的期刊是Hepatology,关键词分析显示,成本效果、丙型肝炎、病毒感染为近年来主要的研究热点。结论:本研究基于文献计量学可视化图谱方法,发现病毒性肝炎在药物经济学领域近十年研究热点主要集中在预防筛查、药物治疗、经济负担以及吸毒患者相关治疗上。
