Connectivity analysis of the global shipping network by eigenvalue decomposition

ABSTRACT

Maritime shipping necessitates flexible and cost-effective port access worldwide through the global shipping network. This paper presents an efficient method to identify major port communities, and analyses the network connectivity of the global shipping network based on community structure. The global shipping network is represented by a signless Laplacian matrix which can be decomposed to generate its eigenvectors and corresponding eigenvalues. The largest gaps between the eigenvalues were then used to determine the optimal number of communities within the network. The eigenvalue decomposition method offers the advantage of detecting port communities without relying on a priori assumption about the number of communities and the size of each community. By applying this method to a dataset collected from seven world leading liner shipping companies, we found that the ports are clustered into three communities in the global container shipping network, which is consistent with the major container trade routes. The sparse linkages between port communities indicate where access is relatively poor.     

关于提升天津港东疆保税港区集装箱业务竞争力的探讨

集装箱物流是吸引制造业资本跨国转移的重要条件,是港口城市参与国际经济大循环的有效途径,已成为促进港口城市经济发展的重要动力.世界各主要经济体都十分关注本国外贸港口在国际集装箱运输中的地位和作用,近年来国际集装箱运输市场的不断成熟为港口集装箱业务带来了前所未有的机遇和挑战.基于对国际集装箱运输市场发展趋势的分析,探讨影响港口集装箱业务竞争力的因素和天津港东疆保税港区发展集装箱业务的竞争优势,为制定提升东疆保税港区集装箱业务竞争力的策略提供建议.     

国际集装箱运输市场的现状、趋势及对策

在国际集装箱运输市场的两个主要影响因素增长速度总体趋于变缓的影响下,国际集装箱运输市场出现了一些新的现状和趋势。在分析国际集装箱运输市场主要影响因素变化的基础上,从市场需求、市场供给、市场价格、服务内容等方面分析了国际集装箱运输市场的现状;进一步地研究了国际集装箱运输市场的未来趋势。基于国际集装箱运输市场的未来趋势,主要从造船业、航运业、港口业、集装箱制造业等行业角度给出了具体对策。     

Case study analysis of the impacts of electronic commerce on the strategic management of container shipping companies

Despite the prevalence of its use, very little is understood about the role of electronic commerce (EC) practice on the strategic management of container shipping companies. Four case studies were undertaken to assess the main uses, motivations, barriers and strategic relevance of EC in the container shipping industry between 1992 and 2002. The cases studies included one large, one medium and one small deep-sea container line, and one medium-sized feeder line. The research found that despite pressing technical and managerial barriers, the need to improve internal economies provided the most fertile grounds for EC use in 1992 and EC was seen as a tactical tool to achieve these goals. By 2002, customer-oriented motivations became critical to the increased relevance of EC and to its perception as a business necessity.     

Empty container repositioning in liner shipping1

The efficient and effective management of empty containers is an important problem in the shipping industry. Not only does it have an economic effect, but it also has an environmental and sustainability impact, since the reduction of empty container movements will reduce fuel consumption and reduce congestion and emissions. The purposes of this paper are: to identify critical factors that affect empty container movements; to quantify the scale of empty container repositioning in major shipping routes; and to evaluate and contrast different strategies that shipping lines, and container operators, could adopt to reduce their empty container repositioning costs. The critical factors that affect empty container repositioning are identified through a review of the literature and observations of industrial practice. Taking three major routes (Trans-Pacific, Trans-Atlantic, Europe–Asia) as examples, with the assumption that trade demands could be balanced among the whole network regardless the identities of individual shipping lines, the most optimistic estimation of empty container movements can be calculated. This quantifies the scale of the empty repositioning problem. Depending on whether shipping lines are coordinating the container flows over different routes and whether they are willing to share container fleets, four strategies for empty container repositioning are presented. Mathematical programming is then applied to evaluate and contrast the performance of these strategies in three major routes.     

Across the waves: a bibliometric analysis of container shipping research since the 1960s

The paper investigates collaborative and semantic patterns that emerged between 1967 and 2013 about the theme of container shipping based on a corpus of 294 articles published in scholarly journals within the fields of transportation, supply chain, economics, geography, regional planning and development, and operations research. An analysis based on the co-occurrence of title words allows identifying dominant sub-themes and their evolution. Main results point to the gradual diversification of container shipping research, from the dominance of economics towards a more trans-disciplinary set of approaches which integrate port-related activities and multimodal networks. Yet, disciplinary specialization remains strong up to nowadays so that container shipping research remains rather fragmented. While co-authorships have increased over time, they remain polarized by few, weakly connected research battalions. Our study suggests that research on container shipping would benefit from more frequent contacts between such communities to foster in-depth cross-disciplinary studies and fundamental cooperation.     

Case study analysis of the impacts of electronic commerce on the strategic management of container shipping companies

Despite the prevalence of its use, very little is understood about the role of electronic commerce (EC) practice on the strategic management of container shipping companies. Four case studies were undertaken to assess the main uses, motivations, barriers and strategic relevance of EC in the container shipping industry between 1992 and 2002. The cases studies included one large, one medium and one small deep-sea container line, and one medium-sized feeder line. The research found that despite pressing technical and managerial barriers, the need to improve internal economies provided the most fertile grounds for EC use in 1992 and EC was seen as a tactical tool to achieve these goals. By 2002, customer-oriented motivations became critical to the increased relevance of EC and to its perception as a business necessity.     

Competition in ship handling: a study of market turbulence in North European harbour towage

This paper addresses the issues of an increasingly competitive towage industry in Northern European ports. Enhanced competitiveness reflects the trends in the global mobility of capital, labour, enterprise and management within the context of deregulated port markets. Up until the early 1990s, the long term trend in major North European ports had been towards market concentration. Many small towage firms have been taken-over, bought out or merged. Alternatively, a pattern of consortia has emerged with co-operation and market sharing seen as preferable to ruinous competition. A contrasting trend has occurred in the 1990s, with new entrants into hitherto stable markets. In a number of ports—Antwerp, Rotterdam, Bremerhaven, Hamburg, Southampton, Thamesport, Bristol Channel—new fleets have brought competitive challenge to the incumbent towage fleets. The process of enhanced competitiveness raises questions of safety, reliability, investment and professionalism. The movement towards an openly competitive shipping industry has been in evidence from the 1960s onwards. The momentum of a dynamic shipping industry, with its competitiveness sharpened by the use of global supply factors, has intensified from that period. The movement in European tonnage towards flags of convenience and global labour supplies began in the tanker and bulk carrier markets; more recently this has spread to deep sea liner, short sea and even cabotage trade shipping. The towage industry is the last North European shipping sector to make this transition, following the trends towards port deregulation in the 1990s. From this perspective, this paper considers the impact on the towage market of global mobility and deregulation in North European towage markets—the impact of increased competition on the traditional operators and the likely effect on operational towage standards.     

Port co-opetition in concept and practice

The port industry has undergone a rationalization process over the last decade. An increasing proportion of port management and operations is being taken over by global port operating groups. Many port operators who previously ran only their local business now extend their business scope to the regional or global scale; today's port operators can be regarded as multinational corporations. In the era of global economy, a port no longer enjoys a natural monopoly, as was the case in the past. To cope with this changing business environment, a certain form of competition and co-operation among ports is necessary so as to provide services that fit into shipping lines' strategies. It is suggested that ports have to concentrate on new ways for co-operation in an effort to establish a countervailing power. This paper proposes a new strategic option known as co-opetition , the combination of competition and co-operation, for the port industry, and explains a case of co-opetition between the container ports in Hong Kong and South China. The results of this research will provide a useful insight into the port industry, which is currently required to carry out its business in an ever-changing business environment.     

Strategic alliances in the container shipping industry: a global perspective

This paper examines developments in container shipping in light of the formation of strategic alliances by many of the leading companies. It focuses on three features: the transformation of services, the evolution of the fleet, and the adjustments made to the ports of call. These elements are analysed on a global basis for 3 years: 1989, 1994 and 1999. Some of the changes wrought by the alliances are identified, including the spread and intensification of services, and the deployment of the largest vessels on alliance routes. While the individual companies that have come together in alliances are serving many more ports than before, it is also demonstrated that the total number of ports served by the industry has remained constant. The results are interpreted in the context of globalization that is tending to impose greater standardization on the container shipping industry.     

Strategic alliances in the container shipping industry: a global perspective

This paper examines developments in container shipping in light of the formation of strategic alliances by many of the leading companies. It focuses on three features: the transformation of services, the evolution of the fleet, and the adjustments made to the ports of call. These elements are analysed on a global basis for 3 years: 1989, 1994 and 1999. Some of the changes wrought by the alliances are identified, including the spread and intensification of services, and the deployment of the largest vessels on alliance routes. While the individual companies that have come together in alliances are serving many more ports than before, it is also demonstrated that the total number of ports served by the industry has remained constant. The results are interpreted in the context of globalization that is tending to impose greater standardization on the container shipping industry.     

Competition in ship handling: a study of market turbulence in North European harbour towage

This paper addresses the issues of an increasingly competitive towage industry in Northern European ports. Enhanced competitiveness reflects the trends in the global mobility of capital, labour, enterprise and management within the context of deregulated port markets. Up until the early 1990s, the long term trend in major North European ports had been towards market concentration. Many small towage firms have been taken-over, bought out or merged. Alternatively, a pattern of consortia has emerged with co-operation and market sharing seen as preferable to ruinous competition. A contrasting trend has occurred in the 1990s, with new entrants into hitherto stable markets. In a number of ports Antwerp, Rotterdam, Bremerhaven, Hamburg, Southampton, Thamesport, Bristol Channel new fleets have brought competitive challenge to the incumbent towage fleets. The process of enhanced competitiveness raises questions of safety, reliability, investment and professionalism. The movement towards an openly competitive shipping industry has been in evidence from the 1960s onwards. The momentum of a dynamic shipping industry, with its competitiveness sharpened by the use of global supply factors, has intensified from that period. The movement in European tonnage towards flags of convenience and global labour supplies began in the tanker and bulk carrier markets; more recently this has spread to deep sea liner, short sea and even cabotage trade shipping. The towage industry is the last North European shipping sector to make this transition, following the trends towards port deregulation in the 1990s. From this perspective, this paper considers the impact on the towage market of global mobility and deregulation in North European towage markets the impact of increased competition on the traditional operators and the likely effect on operational towage standards.     

集装箱船纵倾优化数值模拟

随着全球能源和环境问题越来越严峻,航运市场低迷和竞争的日益激烈,节能减排已成为航运业的迫切需求。船舶纵倾优化具有成本低、易实现和效果佳等优点,是一种更好的节能减排方法。以KCS集装箱船在设计吃水时平吃水状态为基础,对船舶分别进行不同纵倾状态调节,利用RANS方法和切割体自动划分网格技术,计算船舶在不同首倾和尾倾状态下的阻力数值。结果表明,在不考虑水深影响的情况下,KCS集装箱船在不改变船舶航速、载重量的前提下,可以通过纵倾优化调节减少船舶阻力。     

The container terminal community

Over the past 30 years, technological developments have not only affected the design and operation of the port function, but also the organizational and institutional relationships within the port community. Two inter-organizational interaction models are presented, drawing on the findings of over 200 in-depth interviews with senior managers representing terminal operators, shipping lines, feeder operators, ship agents, road hauliers, freight forwarders and shippers serving the UK?Far East trade. The first model represents a breakbulk berth of the 1960s and the second a modern container terminal community. In comparing the models, it is shown that containerization has transformed the fragmented breakbulk operation of the 1960s into the cohesive container terminal community that today facilitates port operations. The paper concludes by examining trends in key inter-organizational relationships in the community and the emergence of eBusiness.     

Port co-opetition in concept and practice

The port industry has undergone a rationalization process over the last decade. An increasing proportion of port management and operations is being taken over by global port operating groups. Many port operators who previously ran only their local business now extend their business scope to the regional or global scale; today's port operators can be regarded as multinational corporations. In the era of global economy, a port no longer enjoys a natural monopoly, as was the case in the past. To cope with this changing business environment, a certain form of competition and co-operation among ports is necessary so as to provide services that fit into shipping lines' strategies. It is suggested that ports have to concentrate on new ways for co-operation in an effort to establish a countervailing power. This paper proposes a new strategic option known as co-opetition, the combination of competition and co-operation, for the port industry, and explains a case of co-opetition between the container ports in Hong Kong and South China. The results of this research will provide a useful insight into the port industry, which is currently required to carry out its business in an ever-changing business environment.     

Asian hub/feeder nets: the dynamics of restructuring

The emergence of hub/feeder networks in the Singapore-Japan corridor through the 1970s and 1980s reflected not only the rapid growth of containerized cargo in regional Southeast and East Asia but also the exceptional importance of Far East/transPacific and Far East/Europe mainline shipping services in structuring these networks. This paper argues that the mid-1990s is a defining moment in the restructuring of these networks; that the period represents, in fact, a convergence of a number of different though related trends impacting on the regional shipping market. More particularly, continuing high growth rates of containerized cargo have not only spawned new ports but have also increased the proportion of ports handling threshold volumes of containers for which mainline calls, rather than handling thfeeder operations, are justified. Further, the quite dramatic retionalization of already large container shipping lines into mergers and alliances bestows a new level of market power that is able to underwrite major changes in shipping schedules, port rotations and feeder linkages. This paper speculates that these developments are generating, and will continue to generate new, hierarchically organized port/shipping networks in which high order networks will include high efficiency/high cost operations; and lower order networks will include a mix of hub and direct-call ports that will focus on different market segments.     

A citation network analysis of sustainability development in liner shipping management: a review of the literature and policy implications

ABSTRACT

Based 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.     

基于AHP-RS的沿海都市带主要港口评价实证分析

区域港口群资源整合已成为当前航运业发展热点之一,文章从港口规模角度,研究区域范围意义下的主要港口评价问题。以改进后的港口吞吐量和集装箱吞吐量指标为基础,构建区域范围意义下的主要港口评价指标体系,以国内外沿海都市带为例,运用AHP-RS法对都市带内主要港口进行相关评价分析。为客观认识和评价港口自身相对规模水平提供参考,也为沿海都市带框架下的区域港口群有序规划发展提供了依据和思路。通过实例验证了AHP-RS综合评价法在港口评价应用中的科学有效性,值得进一步推广。     

Dynamics of liner shipping service scheduling and their impact on container port competition

Container ports provide the primary interface where physical exchange between buyers and sellers of containerised shipping capacity can be consolidated and realised. Consequently, ports that are able to complement and add value to the objectives of shipping lines and shippers will become focal points for containerised cargo flows. To evaluate container port competition, the authors propose a practical and direct approach based on revealed preferences of shipping lines with respect to container shipping service dynamics. The container shipping networks are generated as carriers formulate their service schedules to capitalise on opportunities that are presented by evolving container trade patterns along trade routes and relative changes in the competitive profile of the ports of call. Empirical results showed that this approach offers a deeper understanding on the workings and evolution of competitive dynamics between ports, which may not be obvious from observations of port performance at the aggregated level. Benefits of the approach also include raising awareness that policy makers should be aware of the need to understand the nature, extensity and intensity of competitive relationships between ports as they craft and implement policies to correct for the actual or perceived market failures in the industry.     

Risk perception affecting the performance of shipping companies: the moderating effect of China and Korea

Risks in the shipping industry have been highlighted and have attracted significant attention, especially following the bankruptcy of Hanjin in 2017. Due to the decrease in container volume, the business environment for large shipping companies in China has deteriorated. Therefore, major large shipping companies have implemented mixed ownership reform, which provides more opportunities for large Korean shipping companies to enter the Chinese shipping industry. This study first identifies risk perception, specifically focusing on the moderating effect of Chinese and Korean shipping companies, and then demonstrates the impact of these risks on shipping company performance. The results show that market, operational, and technical risks have a negative influence on Chinese shipping companies, whereas market, policy, financial, operations, and technical risks have a negative influence on Korean shipping companies. This study contributes to the fundamental understanding of the effect of risk perception on performance among shipping companies in both countries and calls for further research on risk management plans based on the risk factors identified herein. On a practical level, this study provides an important reference for operators and investors who seek to enter strategic alliances or joint venture in Chinese shipping industry.