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Author: Bin Hong Alex Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
Empty container logistics is a huge cost component in an ocean carrier's operations. Managing this cost is important to ensure profitability of the business. This thesis proposes a 3-stage framework to handle empty container logistics with cost management as the objective. The first stage studies the forecasting of laden shipment demand, which provides the empty container supply requirement. Based on the supply needs, the problem of optimizing the fleet size was then addressed by using an inventory model to establish the optimal safety stock level. Simulations were used to understand the sensitivity of safety stock to desired service level. The final stage involves using mathematical programming to optimize repositioning costs incurred by carriers to ship empty containers to places which need them due to trade imbalance. At the same time, costs that are incurred due to leasing and storage are considered. A comparison between just-in-time and pre-emptive replenishment was performed and impact due to uncertainties is investigated. The framework is then implemented in a Decision Support System for an actual ocean carrier and is used to assist the empty container logistics team to take the best course of action in daily operations. The results from the optimizations show that there are opportunities for the carrier to reduce its fleet size and cut empty container logistics related costs.
Author: Bin Hong Alex Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
Empty container logistics is a huge cost component in an ocean carrier's operations. Managing this cost is important to ensure profitability of the business. This thesis proposes a 3-stage framework to handle empty container logistics with cost management as the objective. The first stage studies the forecasting of laden shipment demand, which provides the empty container supply requirement. Based on the supply needs, the problem of optimizing the fleet size was then addressed by using an inventory model to establish the optimal safety stock level. Simulations were used to understand the sensitivity of safety stock to desired service level. The final stage involves using mathematical programming to optimize repositioning costs incurred by carriers to ship empty containers to places which need them due to trade imbalance. At the same time, costs that are incurred due to leasing and storage are considered. A comparison between just-in-time and pre-emptive replenishment was performed and impact due to uncertainties is investigated. The framework is then implemented in a Decision Support System for an actual ocean carrier and is used to assist the empty container logistics team to take the best course of action in daily operations. The results from the optimizations show that there are opportunities for the carrier to reduce its fleet size and cut empty container logistics related costs.
Author: Egor Sarafanov
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The imbalances in world trade lead to significant challenges in the container shipping industry, resulting in large differences in import and export rates among locations. Consequently, empty surplus containers need to be repositioned to areas where they are needed, incurring substantial costs and operational inefficiencies. This master's thesis takes on the systematic review and organization of existing strategies, with a particular focus on optimization models. Leveraging Dr. Kris Braekers' Ph.D. thesis (2013), titled "Optimization of Empty Container Movements in Intermodal Transport" and relevant sources in the field, this research critically examines methodologies and identifies commonalities, patterns, and gaps in empty container repositioning. The objective is to contribute to a more comprehensive understanding of this critical issue and provide valuable insights to enrich the knowledge base. By addressing the complexities of empty container repositioning, this thesis seeks to help container shipping companies reduce costs and improve operational efficiency.
Author: Dong-Ping Song
Publisher: Springer Nature
ISBN: 3030933830
Category : Business & Economics
Languages : en
Pages : 174
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Book Description
The book takes the inventory control perspective to tackle empty container repositioning logistics problems in regional transportation systems by explicitly considering the features such as demand imbalance over space, dynamic operations over time, uncertainty in demand and transport, and container leasing phenomenon. The book has the following unique features. First, it provides a discussion of broad empty equipment logistics including empty freight vehicle redistribution, empty passenger vehicle redistribution, empty bike repositioning, empty container chassis repositioning, and empty container repositioning (ECR) problems. The similarity and unique characteristics of ECR compared to other empty equipment repositioning problems are explained. Second, we adopt the stochastic dynamic programming approach to tackle the ECR problems, which offers an algorithmic strategy to characterize the optimal policy and captures the sequential decision-making phenomenon in anticipation of uncertainties over time and space. Third, we are able to establish closed-form solutions and structural properties of the optimal ECR policies in relatively simple transportation systems. Such properties can then be utilized to construct threshold-type ECR policies for more complicated transportation systems. In fact, the threshold-type ECR policies resemble the well-known (s, S) and (s, Q) policies in inventory control theory. These policies have the advantages of being decentralized, easy to understand, easy to operate, quick response to random events, and minimal on-line computation and communication. Fourth, several sophisticated optimization techniques such as approximate dynamic programming, simulation-based meta-heuristics, stochastic approximation, perturbation analysis, and ordinal optimization methods are introduced to solve the complex stochastic optimization problems. The book will be of interest to researchers and professionals in logistics, transport, supply chain, and operations research.
Author: Le Dam Hanh
Publisher:
ISBN:
Category : Containerization
Languages : en
Pages : 86
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Book Description
Author: Dong-Ping Song
Publisher: Routledge
ISBN: 1000374602
Category : Business & Economics
Languages : en
Pages : 415
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Book Description
This book provides a coherent and systematic view of the key concepts, principles, and techniques in maritime container transport and logistics chains including all the main segments: international maritime trade and logistics, freight logistics, container logistics, vessel logistics, port and terminal management, and sustainability issues in maritime transport. Container Logistics and Maritime Transport emphasizes analytical methods and current optimization models to tackle challenging issues in maritime transport and logistics. This book takes a holistic approach to cover all the main segments of the container shipping supply chains to achieve an efficient and effective logistics service system across the entire global transport chain. Sustainability issues such as social concern and carbon emissions from shipping and ports are also discussed. Each maritime transport segment is addressed using an approach from qualitative/descriptive analytics to quantitative/prescriptive analytics. Cutting-edge optimization models are presented and explained to tackle various strategic, tactical, and operational planning problems. The book will help readers better understand operations management in global maritime container transport chain. It will also provide practical principles and effective techniques and tools for researchers to push forward the frontiers of knowledge and for practitioners to implement decision support systems. It will be directly relevant to academic courses related to maritime transport, maritime logistics, transport management, international shipping, port management, container shipping, container logistics, shipping supply chain, and international logistics.
Author: Humberto Florez
Publisher:
ISBN:
Category : Containerization
Languages : en
Pages : 126
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Book Description
Author: Ian Numa Navarro
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
This case study addresses the problem of empty container repositioning in the Colombian context at a regional scale. The research was motivated by the massive empty container congestion in 2022 in specific nodes of the logistics network. The mixed methods approach proposed in this research considered a qualitative and quantitative method that aim to clarify the causes of inefficiency in the system and formulate improvement strategies. Th street-turn has proved to be the strategy with better fit to increase efficiency in the ECR system. To measure the potential gains of street-turn, a matching algorithm has been developed to pair empty containers with export loads, with the objective of achieving more efficient utilization of vehicles in the network. The optimization model results confirm significant cost savings and reduction of empty trips for selected regions in Colombia. However, the reach of the algorithm is limited by the high trade container imbalances. Further, it has been possible to identify that the actors involved in the ECR system at a regional level lack incentives to collaborate, setting this a barrier to the implementation of street-turn.
Author: Chung-Yee Lee
Publisher: Springer
ISBN: 3319118919
Category : Business & Economics
Languages : en
Pages : 556
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Book Description
This book is focused on the impact of ocean transport logistics on global supply chains. It is the first book solely dedicated to the topic, linking the interaction of parties along this chain, including shippers, terminal operators and line carriers. While ocean container transport logistics has been greatly studied, there are many important issues that have yet to receive the attention they deserve. The editors and contributing authors of Ocean Container Transport Logistics: Making Global Supply Chain Effective seek to address these topics and shed new light on the subject. The book is divided into three parts. Part I examines the innovation, trends, competition and business model of container terminal operations. In Part II, the book looks at how tactical and operational management is used in shipping liners. The chapters cover topics such as empty container repositioning, slow steaming, routing, network design and disruption management. Finally Part III explores at shippers and global supply chain management, with chapters on transportation service procurement, hinterland transportation, green corridors, as well as competition and co-operation in maritime logistics operations. The eighteen chapters of the book all highlight the immediate effect of ocean transport logistics on global supply chain.
Author: Dong-Ping Song
Publisher: Routledge
ISBN: 1000374610
Category : Business & Economics
Languages : en
Pages : 285
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Book Description
This book provides a coherent and systematic view of the key concepts, principles, and techniques in maritime container transport and logistics chains including all the main segments: international maritime trade and logistics, freight logistics, container logistics, vessel logistics, port and terminal management, and sustainability issues in maritime transport. Container Logistics and Maritime Transport emphasizes analytical methods and current optimization models to tackle challenging issues in maritime transport and logistics. This book takes a holistic approach to cover all the main segments of the container shipping supply chains to achieve an efficient and effective logistics service system across the entire global transport chain. Sustainability issues such as social concern and carbon emissions from shipping and ports are also discussed. Each maritime transport segment is addressed using an approach from qualitative/descriptive analytics to quantitative/prescriptive analytics. Cutting-edge optimization models are presented and explained to tackle various strategic, tactical, and operational planning problems. The book will help readers better understand operations management in global maritime container transport chain. It will also provide practical principles and effective techniques and tools for researchers to push forward the frontiers of knowledge and for practitioners to implement decision support systems. It will be directly relevant to academic courses related to maritime transport, maritime logistics, transport management, international shipping, port management, container shipping, container logistics, shipping supply chain, and international logistics.
Author: Alex Bin Hong Lee
Publisher:
ISBN:
Category : Containerization
Languages : en
Pages : 87
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Book Description
