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201.
铁路提速需要配套的信号控制系统.阐述"进站双接近区段 点式查询应答器 主体化机车信号"与列车运行监控装置相结合信号控制方案,介绍渝怀铁路信号控制方案实施情况,并时工程建设及运用维护提出建议. 相似文献
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李定华 《南通航运职业技术学院学报》2013,(4):98-100
文章分析了共享性实训基地的定位,提出了当前共享性实训基地存在的问题及应对措施,并提出了共享性实训基地的运行管理策略。 相似文献
204.
铁路货运大数据作为铁路重要的信息资产,集数据类型多、数据增长速度快、数据精确度高等主要特征于一身,具有巨大的发展潜力及应用价值。在分析铁路货运大数据特征的基础上,针对目前铁路货运大数据存在的内部数据共享不足、外部数据融合不够、数据分析能力不足等问题,从货运生产、货运营销和安全管理3个方面提出铁路货运大数据应用策略,达到促进铁路货运生产、经营和安全管理水平提升的效果。 相似文献
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This paper provides a systematic overview of the attitudes of key actors in the Dutch Cost–Benefit Analysis (CBA) practice towards the role of CBA in the decision-making process for spatial-infrastructure projects. The main aim of this paper is to scrutinize the extent to which there is agreement among these Dutch actors in regard to the role of the CBA in the decision-making process. A secondary goal is to provide possible explanations for agreements and controversies among key actors in the Dutch CBA practice. In this study two research methods are combined to study the key actors’ attitudes. Firstly, 86 key actors (e.g. consultants, scientists, policy makers) were interviewed in-depth. Secondly, 74 of them completed a written questionnaire. The most important conclusion of this paper is that in the Dutch CBA practice there is agreement that CBA must have a role in the appraisal process of spatial-infrastructure projects. However, there is a lot of controversy among economists and spatial planners in the Dutch CBA practice concerning the value that is and should be assigned to CBA in the decision-making process. Economists predominantly believe that not enough value is assigned to the CBA in the decision-making process, whereas spatial planners predominantly think that too much value is assigned to the CBA. Both economists and spatial planners believe that this controversy is problematic as it results in debates about the pros and cons of CBA instead of the pros and cons of the spatial-infrastructure projects. This paper analyzes some solutions for this controversy. 相似文献
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作为高高原复杂机场的典型代表,昌都/邦达机场安全飞行具有重要意义,研究过程结合第五版修订的《大型飞机公共航空运输承运人运行合格审定规则》相关要求,参考昌都/邦达机场不提供正常加油服务的现状,运用性能软件Performance Engineer’s Programs,以成都—邦达往返航线为例,从燃油政策、飞机性能和不提供正常加油服务三个方面对昌都/邦达机场运行控制要点展开研究,梳理出以昌都/邦达机场为代表的高高原机场运行控制的要点,以期达到高高原航线持续安全的目的。 相似文献
209.
Development of a container terminal (CT) closely deals with the efficiency of operating systems. This paper proposed a model to decide optimum investment alternatives to improve CT productivity. The proposed approach incorporates the parameters such as number of quay cranes, total length of a quay, yard trucks and yard cranes. The objectives of the model are minimizing the average ship turnaround time while maximizing the container throughput generated by the terminal. The methodology behind the model includes Discrete Event Simulation Model, data envelopment analysis (DEA) and cost-efficiency analysis. Considering container ship visits to Container Terminal Alpha (CT-A), the proposed model is demonstrated with 16 different investment scenario along with 10-months recorded operational data. The results addressed the Scenario LENG-2 (extent current total length of quays from 1.560 meters to 2.000 meters) as the optimal feasible solution for an investment in existing conditions. The model is also considered to besides contributions to investment decisions in CT, the developed framework might be extended to other transportation infrastructures. 相似文献
210.
就城市轨道交通车站联锁系统对行车安全和运营效率的影响中的一些技术细节进行了初步探讨,提出在城市轨道交通领域为了协调行车安全和运营效率的矛盾关系,应该对传统的联锁理念、技术要求和设计验收标准有所改变与拓展,并尽快出台适合城市轨道交通实际情况的、统一和具体的信号技术要求、验收标准以及维护规范,以促进城市轨道交通的快速健康发展。 相似文献