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111.
当今世界,绿色发展已经成为一个重要趋势,绿色发展理念更是指导我国“十三五”规划的重要理念之一。建设城市地下空间是转变城市发展方式、治理“城市病”并建设绿色城市的主要着力点。首先,说明绿色建筑与绿色城市的概念,以及二者的关系。重点从节约土地、利用地热能、节水、绿色城市基础设施(包括绿色客运城市交通和城际交通,未来城市货运交通,绿色城市污水、雨洪蓄排系统,绿色城市垃圾集运和处理系统,智慧地下综合管廊,城市智慧行车系统)等方面,并结合国内外典型案例分析说明利用地下空间发展绿色建筑和绿色城市的理念、方法、构想。最后,结合实例强调地下空间开发规划的重要性、规划科学的重要性、开发与规划中的问题及规划的具体要求。 相似文献
112.
Yui-yip Lau Ka-chai Tam Adolf K. Y. Ng Zhang Jing Jiejian Feng 《Maritime Policy and Management》2018,45(3):403-417
China’s Belt and Road (BR) initiative is expected to facilitate international trade between the countries involved. In this study, we review the special requirements of wine logistics and the market growth potential of wine consumption in China. A model minimizing generalized logistical costs is developed and applied to wine imports in China, so that the best candidate cities in which to locate transport gateways and distribution centers can be identified. Our analysis suggests that the most preferred gateways are Shanghai, Tianjin, Guangzhou, and Hong Kong, which all have similar delivery costs. In comparison, Beijing and Chongqing have much higher delivery costs, mainly because they do not have good access to marine transport and/or efficient domestic distribution networks. For long-distance intercontinental transport of large volumes of wine, marine shipping remains the only viable delivery mode. However, wine distribution within China extensively uses air, road, and water transport. Therefore, cities with excellent multi-modal transport services are better positioned to become wine logistics gateways. Our study also highlights the importance of value-added services and good government support, which are important factors that influence distribution costs and quality. 相似文献
113.
The problems of TBM construction data loss, information barriers and absence of data mining have con⁃ strained the advancement of basic technologies in TBM field. Aimed at building a cloud computation platform for TBM operation information, a new concept of 3B, i. e. Born by digit, Born in format and Born to the cloud, was pre⁃ sented, the issues of information acquisition, transmission and storage during TBM operation were solved, and massive heterogeneous information intelligent transmission system and big data warehouse of TBM group were established. A structure model of cloud computation platform was designed by taking Hadoop system as ecosphere, and a cloud computation platform was built to deploy related algorithm, realizing on-line monitoring and data sharing, further⁃ more the data law mining of interaction of rock mass versus TBM machine was conducted based on big data tech⁃ nique, exploring the development direction of the information platform. © 2018, Editorial Office of "Modern Tunnelling Technology". All right reserved. 相似文献
114.
Tiago A. Santos 《Maritime Policy and Management》2017,44(7):859-881
A novel methodology is developed for determining the characteristics of a cargo roll-on/roll-off (ro-ro) ship and the fleet size required for a given short sea shipping route. The ship and required fleet size to satisfy the transportation demand (for each pair of speed and freight rate) are determined using a database of existing cargo ro-ro ships to obtain the main technical characteristics of the most suitable ship. The time charter, voyage costs and revenue are then calculated considering the technical characteristics of each ship. Fuel costs are corrected for the actual ship speed and loading condition. A number of restrictions in the transportation problem are considered leading to the exclusion of unfeasible solutions. The maximum profit over the period of a year is identified among the feasible pairs of speed and freight rate. This general methodology is applied in a case study that considers the route between Leixões (Portugal) and Rotterdam (Netherlands). The study allows the identification of the most suitable ship and fleet sizes for different market penetration levels and quantifies the impact on shipping company profit of changes in parameters such as fuel costs, time charter costs, emission control area, installed propulsion power and stacking factor. 相似文献
115.
在国内外供应链管理研究及河北港口群煤炭业务现状调研分析的基础上,剖析现阶段港口煤炭供应链运营管理的问题。聚焦河北港口群煤炭供应链模式构建过程,梳理港口煤炭供应链管理流程,构建河北港口群供应链管理模式、物流协同模式、物流体系及物流供应链协同信息化支撑模式,解决制约港口煤炭供应链的信息共享不及时、信息流通不畅等问题。对港口煤炭供应链协同运作信息化体系进行总体框架设计,并选择典型平台建设探讨供应链协同运作信息化体系支撑实现模式,形成高效、科学、先进的河北港口群煤炭供应链管理模式。 相似文献
116.
针对如何将斗轮堆取料机司机与司机、操作员和生产管理者之间相互连接的问题,对斗轮堆取料机生产信息的优化和共享进行研究,通过在散货码头流程控制系统和生产信息系统的基础上融合再开发,利用现场工业以太网,实现了斗轮堆取料机与操作员之间、斗轮堆取料机司机之间、斗轮堆取料机与生产信息管理系统之间、斗轮堆取料机与远程管理者之间4个层面的信息共享,使各方可根据需求实时共享信息,并对生产进行指导和控制。斗轮堆取料机生产信息的优化和共享提高各方联动互通性,尤其是提高了混配作业的准确性和有效性,增强了散货码头在混配生产上的竞争力。 相似文献
117.
长江航道大型整治工程施工河段长、工程量大且工序多,施工水域船舶通航密度大、船舶种类多,施工安全生产控制与河段通航安全面临巨大挑战。依托长江干线下、中、上游典型大型航道整治工程,围绕工程施工全过程风险管控及安全保障技术,采用理论分析、仿真模拟、现场试验、系统研发相结合的方法,提出了长江航道大型整治工程风险识别与评估方法,构建了通航安全与施工生产安全风险预测模型,研究了长江航道大型整治工程全方位、全过程、全要素施工安全保障与控制技术,并基于AIS和云技术开发了长江航道整治工程施工区安全综合信息平台,为保障大型航道整治工程生产及通航安全提供了理论依据和技术手段。 相似文献
118.
119.
加快推动新一代信息技术与先进船舶制造技术深度融合,将对我国船舶行业的发展带来重大影响.本文从分析智能制造的内涵人手,研究探索把人工智能、物联网、大数据、云计算等新技术与智能制造相融合的思路,尝试提出新一代信息技术条件下智能制造的新内涵,并对其在我国船舶行业的应用进行分析,进一步讨论目前发展所面临的问题,最后结合现状提出建议. 相似文献
120.