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Erratum regarding missing Declaration of Competing Interest statements in previously published articles 关于先前发表的文章中缺少竞争利益声明的勘误表
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2020.12.003
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引用次数: 0
Impact of overbooking reservation mechanism on container terminal’s operational performance and greenhouse gas emissions 超售预订机制对集装箱码头运营绩效及温室气体排放的影响
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2021.01.002
Meditya Wasesa, Fakhri I. Ramadhan, Arfenia Nita, Prawira F. Belgiawan, Lidia Mayangsari

Truck appointment systems facilitate coordination between container terminals and drayage trucks in container pick-up operation reservation. However, in many cases, trucks with a reservation do not arrive at the scheduled appointment. As the number of no-shows increases, the container terminal’s productivity will plummet, and drayage trucks that failed to get reservations will lose their opportunity to get service. This research proposes an overbooking reservation mechanism (ORM) to alleviate the negative impact of these no-shows. This research scrutinizes the detailed process mapping of the existing reservation mechanism, proposes an ORM, and conducts agent-based simulations to evaluate the ORM's performance against the regular and go-show reservation mechanisms at different levels of no-shows and working occupancies. The application of an ORM can improve productivity and service levels while minimizing such negative externalities as queue length, overtime, and greenhouse gas emissions. High overtime intensities only appear when the container terminal's workload is exceptionally high, at 200% of maximum capacity, with a low level of no-shows. Even in exceptionally high demand conditions, the drayage trucks wait only up to 16 min before receiving service.

车辆预约系统有助货柜码头与拖运车辆协调货柜取货作业预约。但是,在许多情况下,预订的卡车不会在预定的时间到达。随着未到期率的增加,集装箱码头的生产率将大幅下降,未能获得预定的运货卡车将失去获得服务的机会。本研究提出了一种超预订机制(ORM)来缓解这些未到的负面影响。本研究详细分析了现有预订机制的流程映射,提出了一个ORM,并进行了基于代理的模拟,以评估ORM在不同的未到席和工作入住率水平下,与常规预订机制和演出预订机制的性能。ORM的应用程序可以提高生产力和服务水平,同时最大限度地减少诸如排队长度、加班和温室气体排放等负面外部性。高加班强度只有在集装箱码头的工作量异常高,达到最大容量的200%时才会出现,而且缺勤率很低。即使在异常高的需求条件下,卡车也只需等待16分钟即可接受服务。
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引用次数: 5
How long do we keep up with the Joneses? Herding time horizons in the dry bulk shipping markets 我们能和邻居们攀比多久?干散货航运市场的放牧时间范围
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2021.03.002
Nektarios A. Michail , Konstantinos D. Melas

We estimate intentional and unintentional herding in the dry-bulk, ocean-going segment that spans from August 1998 to January 2020 and measure how this can impact vessel orders. As the results suggest, while intentional herding has a large effect on the orders of the newbuilding vessels, the impact is very short-lived. On the contrary, unintentional herding, related to common environmental factors, has a smoother but more time persistent effect on the newbuilding vessels. The findings suggest that the key players in the market do not only affect the dry-bulk market with their decisions but also the logistics trade and ultimately the world economy. Thus, the inclusion of the dry bulk key shipowners by the policymakers in the discussions before reaching an important decision could minimise the volatility of the overall sector.

我们估计了从1998年8月到2020年1月期间干散货和远洋部分的有意和无意群集,并衡量了这对船舶订单的影响。结果表明,虽然有意放牧对新造船的订单有很大影响,但这种影响是非常短暂的。相反,与常见环境因素有关的无意放牧对新造船的影响较为平稳,但持续时间更长。研究结果表明,市场主要参与者的决策不仅会影响干散货市场,还会影响物流贸易,最终影响世界经济。因此,政策制定者在做出重要决定之前将干散货主要船东纳入讨论,可以最大限度地减少整个行业的波动性。
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引用次数: 0
The effect of corporate social responsibility recognition on organisational commitment in global freight forwarders 全球货运代理企业社会责任认知对组织承诺的影响
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2020.12.005
Jiyoung Ko , Hyunmi Jang , Sang Youl Kim

One of the serious inquiries for industry experts and academics is whether and how corporate social responsibility (CSR) can help create better workplace environments. However, this has not been studied enough so far from employees’ perspective. To fill this gap, this study aims to examine the relationship between employees’ perception on corporate social responsibility (CSR), their job satisfaction, organisational trust and ultimately, organisational commitment to suggest academic and practical implications on sustainable management for international freight forwarders in Korea. For this study, 166 global logistics companies in Busan, one of the world’s leading maritime cities, were targeted, and questionnaires were surveyed from 10 April to 30 May 2019. A total of 265 questionnaires were analysed to verify the relevance of individual hypothesis in the research model through confirmatory factor analysis and structural equation model analysis using AMOS 18.0. The results of five hypotheses testing demonstrated a positive and significant effect except that Hypothesis 4 on ‘job satisfaction will have a significant effect on organisational commitment’ was rejected. Overall, this paper provides important insights into the significance of CSR in global freight forwarding companies with theoretical development and the empirical test of CSR model, highlighting the trust to increase the organisational commitment of employees.

行业专家和学者面临的一个严肃问题是,企业社会责任(CSR)能否以及如何帮助创造更好的工作环境。然而,到目前为止,从员工的角度来看,这方面的研究还不够。为了填补这一空白,本研究旨在研究员工对企业社会责任(CSR)的感知、他们的工作满意度、组织信任以及最终的组织承诺之间的关系,从而为韩国国际货运代理的可持续管理提供理论和实践意义。在这项研究中,以釜山(世界领先的海上城市之一)的166家全球物流公司为目标,于2019年4月10日至5月30日进行了问卷调查。利用AMOS 18.0对265份问卷进行验证性因子分析和结构方程模型分析,验证研究模型中个体假设的相关性。除了“工作满意度对组织承诺有显著影响”的假设4被否定外,五个假设检验的结果都显示出正向显著的影响。总体而言,本文通过理论发展和企业社会责任模型的实证检验,对全球货运代理企业社会责任的意义提供了重要的见解,突出了信任对员工组织承诺的增加作用。
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引用次数: 9
Erratum regarding missing Declaration of Competing Interest statements in previously published articles 关于先前发表的文章中缺少竞争利益声明的勘误表
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2020.12.002
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引用次数: 0
Exploring the factors influencing the cost-effective design of hub-and-spoke and point-to-point networks in maritime transport using a bi-level optimization model 利用双层优化模型探讨了影响海上运输枢纽辐和点对点网络设计成本效益的因素
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2021.03.001
Hoshi Tagawa , Tomoya Kawasaki , Shinya Hanaoka

Hub-and-spoke (HS) networks are cost-effective because they allow the realization of economies of density. However, the cost of point-to-point (PP) networks may be lower than that of HS networks when certain conditions, such as cargo demand, bunker price, vessel size, and the shippers’ value of time change. This study explores the factors that influence the cost-effectiveness of HS and PP networks. We developed a mixed-integer programming model that allows for bi-level optimization between shipping lines and shippers. As a case study, we applied it to Chinese and Japanese ports, with both HS and PP networks. We found that high cargo demand increases the use of PP networks while enlarging vessel size increases the use of HS networks. These findings enable us to predict the occurrence of hubbing—shifting from a PP to an HS network—and de-hubbing—shifting from an HS to a PP network.

集线器和辐状(HS)网络具有成本效益,因为它们允许实现密度经济。然而,当货物需求、燃油价格、船舶尺寸和托运人的时间价值等条件发生变化时,点对点(PP)网络的成本可能低于HS网络。本研究探讨了影响HS和PP网络成本效益的因素。我们开发了一个混合整数规划模型,允许在航运公司和托运人之间进行双层优化。作为案例研究,我们将其应用于中国和日本的港口,同时使用HS和PP网络。我们发现,高货物需求增加了PP网络的使用,而船舶尺寸的扩大增加了HS网络的使用。这些发现使我们能够预测从PP到HS网络的中心转移和从HS到PP网络的去中心转移的发生。
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引用次数: 3
The role of institutions at the nexus of logistic performance and foreign direct investment in Asia 机构在亚洲物流绩效和外国直接投资关系中的作用
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2021.02.001
Keng Lin Soh , Wai Peng Wong , Chor Foon Tang

Foreign Direct Investment (FDI) plays an important part in the economic growth of developing Asia and logistics capability is a crucial factor in FDI location choice. Till today, research investigating Logistics Performance (LP) and FDI in Asia are still lacking and rather inconclusive and not standardised. Using a total of 31 Asian countries covering 2007 through 2017, the study critically investigates the impact of LP on FDI using static panel regression method. The results demonstrate that while LP significantly impact FDI, there is a threshold effect of institutional quality in the LP-FDI relationship. Specifically, this paper found that the impact of LP on FDI varies across the perceived level of institutional quality i.e., the effect is positive only before certain threshold level of institutional quality, after which the effect of LP on FDI is reversed. This finding suggests that the LP-FDI nexus is contingent on the perceived level of institutional quality, thus supporting the idea that innovations (i.e., creativity and flexibility embedded within a sound institutional framework) is potent in delivering long-run LP-FDI development in Asia.

外商直接投资(FDI)在亚洲发展中国家的经济增长中发挥着重要作用,而物流能力是外商直接投资区位选择的重要因素。直到今天,研究物流绩效(LP)和外国直接投资在亚洲仍然缺乏,相当不确定和不标准化。本研究以2007年至2017年31个亚洲国家为样本,采用静态面板回归方法对LP对FDI的影响进行了批判性研究。结果表明,虽然LP显著影响FDI,但在LP-FDI关系中存在制度质量的阈值效应。具体而言,本文发现LP对FDI的影响在不同的制度质量感知水平上存在差异,即只有在一定的制度质量阈值水平之前,LP对FDI的影响才为正,超过一定的制度质量阈值之后,LP对FDI的影响是反向的。这一发现表明,低成本投资与外国直接投资之间的联系取决于对制度质量的感知水平,因此支持了创新(即,在健全的制度框架内嵌入的创造力和灵活性)对于在亚洲实现低成本投资与外国直接投资的长期发展是强有力的这一观点。
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引用次数: 12
A multi-objective optimization model for shelter location-allocation in response to humanitarian relief logistics 响应人道主义救援物流的多目标避难所配置优化模型
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2021.01.003
Panchalee Praneetpholkrang , Van Nam Huynh , Sarunya Kanjanawattana

Decision-making for shelter location-allocation influences the success of disaster response and affects the security of victims. This paper proposes a multi-objective optimization model for determining shelter location-allocation in response to humanitarian relief logistics. Three objective functions are formulated to improve both efficiency and effectiveness. The first objective is to minimize total costs, including fixed costs for opening the shelters, transportation costs, and service costs. The second objective is to minimize the total time for evacuating victims from all affected areas to allocated shelters. The third objective is to minimize the number of shelters required to provide thorough service to victims. The Epsilon Constraint method (EC) and Goal Programming (GP) are employed for solving the proposed model. The applicability of the proposed model is validated through a case study of flooding in Surat Thani, Thailand. The Pareto efficiency obtained from solving the proposed model is compared with current shelter location-allocation plans determined by the government sector. The comparisons reveal that the results obtained from solving the proposed model outperform current shelter location-allocation plans. Furthermore, the results of this study could provide an advantage to decision-makers considering appropriate strategies for disaster response.

庇护所选址决策影响着灾害应对的成功与否,也影响着灾民的安全。本文提出了一个多目标优化模型,以确定人道主义救援物流中的庇护所位置分配。制定了三个目标函数,以提高效率和效果。第一个目标是最小化总成本,包括开放庇护所的固定成本、运输成本和服务成本。第二个目标是尽量减少将所有受灾地区的受害者疏散到分配的避难所的总时间。第三个目标是尽量减少向受害者提供彻底服务所需的庇护所数量。采用Epsilon约束法(EC)和目标规划法(GP)求解模型。通过对泰国素叻他尼洪水的实例研究,验证了该模型的适用性。通过求解该模型得到的帕累托效率与当前政府部门确定的住房选址分配方案进行了比较。比较表明,通过求解所提出的模型得到的结果优于当前的庇护所选址分配方案。此外,本研究的结果可以为决策者考虑适当的灾害应对策略提供优势。
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引用次数: 22
Erratum regarding missing Declaration of Competing Interest statements in previously published articles 关于先前发表的文章中缺少竞争利益声明的勘误表
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-06-01 DOI: 10.1016/j.ajsl.2020.12.001
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引用次数: 0
Utilization of a deep learning-based fuel consumption model in choosing a liner shipping route for container ships in Asia 基于深度学习的燃料消耗模型在亚洲集装箱船班轮航线选择中的应用
IF 3.1 Q2 TRANSPORTATION Pub Date : 2021-03-01 DOI: 10.1016/j.ajsl.2020.04.003
Linh Bui-Duy, Ngoc Vu-Thi-Minh

Designating the ideal shipping route can spare expenses, enlarge profits and improve the competitiveness of shipping companies. Liner shipping route choice is mainly contingent on fuel cost, which always contributes the major proportion of the ship's operating cost. Although many studies on this topic have been carried out, none are based on the fuel consumption forecast model designed by the advanced machine learning method. This paper provides a platform idea for selecting the optimal operating route for container ships to minimize fuel cost by using an asymmetric traveling salesman problem (ATSP) algorithm solution, in which the fuel consumption model for the route is estimated based on the deep-machine learning method. Five input variables are given in the model including average velocity, sailing time, ship's capacity, wind speed, and wind direction. The mean absolute percentage error (MAPE) of the model is 5.89%, indicating that the predictive result obtains a very high accuracy, close to 95%. The optimal model is thus applied in combination with ATSP to address the optimal solution for a certain route.

确定理想的航线,可以节省费用,扩大利润,提高航运公司的竞争力。班轮航线的选择主要取决于燃油成本,燃油成本在船舶运营成本中所占的比重很大。虽然这方面的研究很多,但没有一个是基于先进的机器学习方法设计的油耗预测模型。本文采用非对称旅行推销员问题(ATSP)算法解决方案,基于深度机器学习方法估计航线的燃油消耗模型,为集装箱船舶选择最优运营航线以实现燃油成本最小化提供了平台思想。模型中给出了平均速度、航行时间、船舶容量、风速和风向五个输入变量。模型的平均绝对百分比误差(MAPE)为5.89%,表明预测结果获得了非常高的精度,接近95%。因此,将最优模型与ATSP结合使用,求解某条路线的最优解。
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引用次数: 24
期刊
Asian Journal of Shipping and Logistics
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