“海上丝绸之路”沿线重要港口竞争力评价   总被引：1，自引：0，他引：1  

杨忍  牟乃夏  彭澎  刘希亮  张恒才  陆锋 《地球信息科学学报》2018,20(5):623-631

“海上丝绸之路”是促进亚欧和亚非互联互通的重要通道,对其沿线重要港口的竞争力研究,可以为海上丝绸之路的建设提供参考。本文综合考虑港口的自然条件、腹地环境、基础设施、服务水平、政府廉洁度,及其在航运网络中的地位差别等因素,运用熵权-层次分析法对沿线51个国家的99个重要港口的竞争力进行评价。结果表明,① 港口综合竞争力空间分布呈明显的区域化特征,且与国家经济发展水平显著相关,地中海地区港口竞争力普遍较强,亚洲次之,非洲最弱。② 港口的网络地位对竞争力的影响最大,竞争力强的港口多位于重要水域的战略通道,网络地位高,辐射范围广。③ 我国投资的部分沿线港口综合竞争力与成熟港口之间还存在一定差距,但是具备较大的竞争力提升空间。  相似文献   

Combating piracy and armed robbery in Asia: The ReCAAP Information Sharing Centre (ISC)     

Joshua Ho 《Marine Policy》2009

The Regional Cooperation Agreement on Combating Piracy and Armed Robbery Against Ships in Asia (ReCAAP) Information Sharing Centre (ISC) is an international organisation that comprises 14 member countries in the region. Despite its many advantages, the ISC has some weaknesses, which when addressed could bring regional cooperation to a new level and which could make the ISC a model for other regions.  相似文献   

Rock moisture content in the field and the laboratory and its relationship to mechanical weathering studies     

Kevin Hall 《地球表面变化过程与地形》1986,11(2):131-142

Rock moisture content is a major control of mechanical weathering, particularly freeze-thaw, and yet almost no data exist from field situations. This study presents moisture content values for rocks, taken from a variety of positions and conditions, in the maritime Antarctic. Additional information regarding the amount of water the rock could take up, as observed from laboratory experiments, is also presented. The results show that the approaches used in simulation experiments, particularly that of soaking a rock for 24 hours, may produce exaggerated results. It was found that the saturation coefficient (S-value) was a good indicator of frost susceptibility (based on water content) but that the derivation of that value may underestimate the potential of some rocks. The distribution of moisture within rocks is seen as an important, but unkown, factor. The results of these field moisture contents suggest that for simulations of freeze-thaw or hydration to be meaningful then they should have rock water contents based on field observations.  相似文献   

The physical properties of quartz-micaschist and their application to freeze-thaw weathering studies in the maritime antarctic     

Kevin Hall 《地球表面变化过程与地形》1987,12(2):137-149

As part of a study on freeze-thaw weathering in the maritime Antarctic an investigation was made of the physical properties of the local rock. Tests were made of point-load compressive strength, Schmidt hammer in situ rock strength, moisture content, indentor resistance and the size range of weathering products. The resulting data were used to consider the form of freeze-thaw weathering operative in the field and its relationship to laboratory simulations. A distinct difference between ‘massive rock’ and ‘intact rock’ is observed in the field. It is suggested that future studies should generate a greater database pertaining to rock properties as it is an invaluable aid in the study of mechanical weathering.  相似文献   

GIS中多幅地图的缩放漫游及其数据组织   总被引：1，自引：0，他引：1  

赵仁亮 《四川测绘》1998,21(4):151-155

本文在分析现存GIS软件中处理多幅不同比例尺或相同比例尺地图的放缩漫游时的不足及其原因的基础上,提出了一种使用地理逻辑窗口动态裁剪快速而安全的多幅地图无级缩放和全区域自由漫游的方法,并对其数据组织和管理作了探讨。  相似文献   

Measuring the maritime economy: Spain in the European Atlantic Arc     

《Marine Policy》2015

Despite the importance of the socio-economic dimension of the use of marine waters, there has been little research in the field until recently, when interest has grown in the concept of ‘blue growth'. This paper aims to contribute to filling this gap with a socio-economic assessment of the main maritime sectors, focused on the Spanish part of the European Atlantic Arc. To this end, it first proposes a theoretical structure for the maritime economy and then collects and classifies comparable and reliable maritime socio-economic indicators. The data obtained allows us to assess the size of the Spanish maritime sector and the position of the Spanish Maritime Cluster in the wider context of the maritime economy of the European Atlantic, as well as discuss the appropriateness of a strategy of forming clusters at the national level vs. a transnational approach. The results indicate differences between regions in the European Atlantic Arc that complicate the development of integrated policies to stimulate blue growth. Extending our knowledge of the maritime economy of the European Atlantic Arc will make it possible to design strategies that address the real issues, increasing the likelihood of these being effective.  相似文献   

Identifying substandard vessels through Port State Control inspections: A new methodology for Concentrated Inspection Campaigns     

《Marine Policy》2015

Substandard vessels that fail to comply with international maritime regulations are the target of Port State Control inspections. Despite their significant costs, many inspections do not lead to any detentions and, in a significant number of cases, no deficiencies are detected. In this paper, quantile regressions for count data are used to estimate the likelihood of having a high number of deficiencies of a specific type. The purpose is to complement existing practices focusing on detention with the objective to improve the selection process. Similar factors influence the likelihood of having a vessel detained and that of having a vessel recording a high number of deficiencies. However, quantile regressions applied to the number of deficiencies help improving the identification of factors influencing the likelihood of finding some specific types of deficiencies, which is the focus of Concentrated Inspection Campaigns. The paper concludes that the selection process for such campaigns should be improved using this new methodology.  相似文献   

海洋科技在21世纪海上丝绸之路建设中的作用     

韩鹏  钱洪宝 《海洋技术学报》2015,34(3):122-124

21世纪海上丝绸之路建设在海洋经济活动、海上综合保障等方面对海洋科技领域提出了新命题。在分析我国海洋技术优势领域的基础上,围绕科技创新政策伙伴关系、培育创新品牌、推进海洋经济和产业发展等方面,深入阐述了海洋科技领域在21世纪海上丝绸之路建设中的支撑作用,同时提出具体工作思路。  相似文献   

大连“11．28”翻船事故风浪分析     

李燕  黄振  刘晓初  赵繁盛  刘大刚 《气象与环境学报》2015,(3)

利用自动气象站资料、常规气象观测资料、NCEP全球再分析资料及WAVEWATCH III模式预报资等料对2012年11月28日大连翻船事故的大风大浪实况、事故成因及演变情况进行分析。结果表明：大连此次翻船事故高空的强冷空气促使冷涡加强,西部大陆高压和蒙古气旋不断加强东移,东南部海上高压稳定少动,蒙古气旋底前部与海上高压顶后部梯度加大,梯度密集区正好位于渤海海峡,造成黄海和渤海偏西大风;低层辐散和中层辐合的垂直结构加强了低层以下的上下扰动,构成南北垂直环流,中层以下动力强迫下沉气流将北侧中层的动量下传至辽东半岛南部地面及黄海、渤海海面,使其不断获得动能,有利于偏西大风的加强;西南向岸大风有利于浪高增长,偏西大风及与其同时增长的大浪是大连地区此次翻船事故的主要原因。  相似文献   

Towards an operational use of space imagery for oil pollution monitoring in the Mediterranean basin: a demonstration in the Adriatic Sea     

Ferraro G  Bernardini A  David M  Meyer-Roux S  Muellenhoff O  Perkovic M  Tarchi D  Topouzelis K 《Marine pollution bulletin》2007,54(4):403-422

Studies of operational pollution carried out by European commission - Joint Research Centre in the Mediterranean Sea for the years 1999-2004 are briefly introduced. The specific analysis of the Adriatic Sea for the same period demonstrates that this area has been characterized by a relevant number of illegal discharges from ships. After setting the historical background of the project AESOP (aerial and satellite surveillance of operational pollution in the Adriatic Sea), the content, partners and aim of the project are presented. Finally, the results of the first phase of the AESOP project are presented. The results seem very encouraging. For the first time in the Adriatic, real time detection of oil spills in satellite images and an immediate verification by the Coast Guard has been undertaken. An exploratory activity has also been carried out in collaboration with the University of Ljubljana to use automatic information system (AIS) to identify the ships detected in the satellite images.  相似文献