三峡工程设计中的重大技术问题

三峡工程为举世瞩目的水利工程,其工程规模之浩大、技术问题之复杂都是罕见的。该文选择了工程设计中坝址的选定及枢纽建筑物设计中的若干关键技术问题进行介绍和阐述,以期读者对三峡工程有更深入的了解。     

公路客运运输枢纽分类分级研究

在分析公路客运运输枢纽影响因素的基础上,采用人口、国内生产总值、公路客运量、交通区位条件和城市等级作为评价指标,分别采用节点重要度法和聚类分析法对179个公路客运运输枢纽进行分类分级研究,并对比分析两种方法的分析结果,进而提出4个层级结构的公路客运运输枢纽分类结果。研究结果表明,该方法具有较好的适应性和实用性。     

Estimating the environmental costs of port related emissions: The case of Kaohsiung

This study estimates the emission costs of ships and trucks in the Port of Kaohsiung, Taiwan, focusing mainly on particular matter and volatile organic compounds. By calculating annual ship and truck emissions we find that the major contributors are tankers, container ships and bulk ships and trucks. Using a bottom-up methodology, the combined environmental costs of ships and trucks are estimated to be over $123 million per year.     

Ship emissions and their externalities in cruise ports

This paper presents an estimation and analysis of ship exhaust emissions and their externalities in the popular cruise destinations of Dubrovnik (Croatia) and Kotor (Montenegro) along the eastern coast of the Adriatic Sea. To this extent, the recent record (2012–2014) of cruise ships calling at these ports is used to model and estimate the ship exhaust emission inventories and externalities within the associated bays and ports.The results indicate that cruise ship traffic produces continuously increasing air pollution in both ports over recent years. More importantly, however, the analysis of the ship operating characteristics reveals that for any given ship traffic involving specific vessels using marine fuel of a given quality, the presence of other factors (e.g. berth availability, berth accessibility etc) can also influence the ship emission levels. This is particularly evident in the case of the port of Kotor where berth space insufficiency dictates the need for ship anchorage thus leading to increased air pollution and costs of associated damage.The application and results of the aforementioned ship activity-based methodology to the ports of Dubrovnik and Kotor improves our understanding of ship emissions in cruise bays and ports, and contributes toward the implementation of port policies for the effective control of air quality in such environmentally sensitive locations.     

Evaluating the social cost of cruise ships air emissions in major ports of Greece

Detailed NO_x, SO₂ and PM_2.5 emissions have been estimated for cruise ships in the five busiest Greek ports (i.e. Piraeus, Santorini, Mykonos, Corfu and Katakolo) for year 2013. The emissions were analyzed in terms of gas species, seasonality and activity. The total in-port inventory of cruise shipping accounted to 2742.7 tons: with NO_x being dominant (1887.5 tons), followed by SO₂ and PM_2.5 (760.9 and 94.3 tons respectively). Emissions during hotelling corresponded to 88.5% of total and have significantly outweighed those produced during ships’ maneuvering activities (11.5% of total). Seasonality was found to play a major role, as summer emissions and associated impacts were significantly augmented. The anticipated health impacts of ship emissions can reach to €24.3 million or to €5.3 per passenger proving the necessity of control of the emissions produced by cruise ships in port cities or policy and measures towards a more efficient cruise industry.     

国际集装箱多式联运与东部港口竞争力分析

从北方中西部地区外贸货物国际集装箱多式联运的路径优化分析入手，分别通过对经上海、青岛和连云港转运的全程广义运输成本的估算，以及概率型交通量分配模型的应用，就我国东部港口之间的竞争力水平进行了实证研究。     

新冠肺炎疫情下的沿海港口发展及供给侧调整方向

本文依据AIS航迹观测和实际调研情况,分析港口供给侧受新冠肺炎疫情影响、港口供给侧保障水平,发现本次疫情对我国全年港口吞吐量存在较小影响,但港口运输进入低速增长期。同时,从码头、通道、服务、政策四方面,提出了提高港口资源利用效率、促进运输结构调整、探索智慧港口发展与建设、优化审批流程等相关建议。     

Logistics connectivity considering import and export for Chinese inland regions in the 21st-Century Maritime Silk Road by dry ports

This investigation studies the logistics connectivity of inland Chinese provinces along the 21st-Century Maritime Silk Road (MSR) from the perspective of the oriented cooperation relationship between seaports and dry ports in inland regions. The logistics connectivity is measured based on the import and export data. First, complex network theory is used to develop a system for evaluating logistics connectivity of inland regions, involving metrics of susceptible-infected-recovered, and improved closeness centrality proposed to drawing on the characteristics of the studied network based on closeness centrality. Second, based on collected data, 136 dry ports in China and 127 seaports along the MSR have been used to construct an empirical network that covers 15 inland provinces of China. Then, the accessibility and importance of inland provinces are analyzed, and key points that serve the improvement of the logistics connectivity of inland provinces are mined and summarized. An example of an improved scheme for the connectivity of inland provinces is presented to demonstrate the application of these key points. The conclusions drawn support decision-making for local governments to improve the logistics connectivity of inland regions in the international logistics network, and then strengthen the participation of inland provinces in the MSR.     

传感器组故障自诊断自修正方法

提出用RBF神经网络对传感器组中的各个输出进行预测,若预测值与输出值发生较大的偏差,可能是传感器故障或设备故障,运用传感器之间的冗余率,进一步判断传感器是否发生故障,进而采用对应的诊断策略。     

首届国际港口物流战略会议论文综述

对2004年首届国际港口物流战略会议进行了综述,并从宏观的角度,对此次会议的主旨发言文章做了提纲挈领的概述,对中国与欧盟之间乃至世界的物流业发展提出一些新的论点和建议。