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本文介绍了将微型计算机应用于集装箱起重机自动控制系统的设计思想和方法。在该系统中,以集装箱起重机为控制对象,用单板机作为控制器,通过传感器,驱动放大电路及接口芯片等构成一个完整的自动控制系统。此系统基本实现了集装箱起重机的自动控制,并给集装专用吊具与集装箱迅速准确的自动对位带来好处。 相似文献
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介绍了国内外集装箱锁闭装置的发展,论述了我国开行160 km/h集装箱运输专列所应选取的锁闭装置的形式。 相似文献
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Helene Bareksten Solvang Nikolaos Valantasis-Kanellos Dong-Wook Song 《Maritime Policy and Management》2018,45(4):495-513
This qualitative inductive research explores the potential benefits for the Scandinavian economy and ports through the implementation of the Northern Sea Route (NSR) as an alternative for container shipping to the established Southern route through the Suez Canal. To extract expert’s opinions and address these objectives, we utilised in-depth face-to-face semi-structured interviews through purposive sampling in a single case study setting. The analysis of the data demonstrates that the commercialisation of NSR can yield benefits for the Scandinavian economy (e.g. GDP increase, jobs creation) and reveals the benefits of Scandinavian ports (e.g. ECA’s, flexibility, hinterland, etc.) compared to other ports in North West Europe, which potentially grasp the NSR as an opportunity. However, it is highlighted that this can only be achieved if Scandinavian countries are proactive and secure their involvement. 相似文献
4.
Shuaian Wang 《Maritime Policy and Management》2017,44(1):62-80
This study examines how to incorporate the inventory costs of containerized cargoes into existing liner service planning models such that the designed networks could be improved while not causing extra modeling/computational burden. Two approaches are compared: (i) not considering the inventory costs at all and (ii) incorporating the inventory costs associated with onboard time and those related to transshipment by assuming a fixed connection time. The two models are compared with the ideal model capturing the exact inventory costs on a route choice problem and a capacity planning problem based on extensive randomly generated and practical numerical experiments. The results show that: first, ignoring the inventory costs in service planning models may lead to network design with much higher costs (poor network design decisions); second, in service planning models assuming weekly frequency, the inventory costs associated with onboard time could be formulated exactly, and those related to the connection time of weekly services could be approximated by assuming fixed connection time of 3.5 days for ports with 1 day’s minimum connection time and 4.5 days for ports with 2 days’ minimum connection time. 相似文献
5.
为了对一辆集卡装载的2个20英尺集装箱进行分别称重,设计了新的汽车衡结构,推导出计算公式并进行实验验证,得到了一种可以保证作业安全且能为港口和货主接受的集装箱汽车衡称重方法。 相似文献
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主要阐述影响双层观光车侧倾稳定性的各项因素;对比分析后,提出采用四个高度控制阀的改进方案,最终通过出口认证试验。 相似文献
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研究了影响桥式整流带阻感型负载的并联型有源电力滤波器补偿性能的因素,从理论上分析指令延时和母线电压以及输出电感对补偿效果影响的具体原因,并通过Matlab软件建立仿真模型,借助仿真波形和THD数据证明了理论分析的正确性,最后根据实际工程需要合理优化了各个参数,并在一台50 KVA三相四线的并联电力有源滤波器样机上验证了该方法的实用性和有效性. 相似文献
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通过对CARRIER冷藏集装箱排气压力故障的分析,阐述修理冷藏集装箱微电脑控制器的一般分析方法、测试方法及应注意问题。 相似文献
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ABSTRACTBased on an analysis of 253 related papers drawn from the Web of Science database, this study examines holistic sustainability research in liner shipping management literature using a citation network analysis (CNA) approach followed by a qualitative analysis of findings. We identify four major research domains, namely shipping performance, port selection and management, shipping markets, and environment, as well as related sub-domains of shipping performance. We discuss the current research trends and focal issues in these domains with a focus on their implications for policy development. Our results indicate that while the sustainability discourse in the literature has developed and matured significantly over the last decade, generating valuable insights for practitioners and regulators alike, it still struggles with blurry terminology and a lack of holistic frameworks jointly addressing the different aspects of sustainability: Economic considerations of liner shipping are still the main concern, while environmental and social issues are less regarded in the academic discourse. Furthermore, we identify a dearth of studies rooted in managerial or economic theory. In this regard, our study provides insights on the scope of the holistic sustainability discourse in liner shipping management, its contributions to theory and practice, and its implications for the further development of policies addressing sustainability in liner shipping management. We advocate further construct development for sustainability in liner shipping, as well as empirical tests of the antecedents of sustainability practice adoption in the industry for future research. 相似文献
10.
张勤 《武汉船舶职业技术学院学报》2005,4(5):39-41
本文主要阐述了我国对外贸易在由出口贸易大国转变为出口贸易强国的过程中,所应进行的调整出口贸易结构方面的战略思考.文中分析了我国对外贸易在国际贸易中的地位、出口商品结构存在的问题,探究了调整出口贸易结构的内容及调整方向. 相似文献