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Item type:Publication, Access status: without files , RAPID intermodal transport system: a new concept for joint transportation of passengers and freight(Springer, 2025-08); ; ; ; This paper introduces the RAPID intermodal transport system, an innovative solution that integrates passenger and freight transport using advanced Container Transfer System (CTS) technology. In response to European Commission targets for reducing road freight emissions and alleviating congestion, the RAPID system provides a sustainable, door-to-door transport alternative by enabling rapid, crane-free, vertical container transfers between truck trailers and rail wagons. This study addresses two primary research questions: (i) The feasibility of a CTS-based intermodal transport system for seamless door-to-door mobility, and (ii) its impact on transport efficiency, CO₂ emissions reduction, and economic viability in interregional transportation. To evaluate these aspects, we provide theoretical foundations for throughput analysis of such a system and develop and validate an optimization-simulation framework to match fluctuating demand under real-world conditions. A Danish case study indicates that the RAPID system can achieve a 94% reduction in freight CO₂ emissions and an 83% reduction in passenger transport emissions, improving capacity utilization and lowering operational costs. The results demonstrate that the RAPID system is a scalable, low-carbon alternative to conventional transport, capable of addressing modern logistics challenges. Future research will focus on pilot implementations, detailed economic assessments, and integration of emerging technologies to further enhance system performance and scalability.Publicationtype: Conference Paper41 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Synchronizing the shipbuilding supply chain with generic cumulative production figures(Springer, 2025-08); ; ; ; Shipbuilding is often characterized by a high complexity of the final product and a high variance of parts. Some shipyards even produce one-of-a-kind ships. Logistics performance of the shipbuilding supply chain, which is crucial for competitiveness of shipyards, is often limited due to long throughput times, high inventory levels and productivity losses, e.g., in material handling. Synchronizing supply with assembly processes in the shipyard can help to greatly reduce throughput times and inventory levels and to increase productivity, as the example of lean production in the automotive industry shows. However, neither conventional lean production concepts from high-volume production, nor existing approaches of shipyard production planning and control can support shipbuilding supply chain synchronization in a sufficient way. This paper presents a new concept for highly frequent planning and control of shipbuilding supply and production processes with a comparatively low information demand, which is based on a concept of Cumulative Production Figures (CPFs) from automotive production.Publicationtype: Conference Paper27 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Modelling of logistics objectives at the sea side of container terminalsIn the context of the expanding global economy, the significance of transport chains has been increasingly recognized, with container terminals assuming a pivotal role within these networks. The competitive environment has led to pressure on these terminals, giving rise to a conflict of logistical objectives such as short vessel handling times and minimized handling costs. Previous attempts to address this issue, including simulation studies and deterministic mathematical models, have yet to be effectively implemented in practical settings due to their sensitivity to parameters and inherent complexity. This study proposes a novel engineering-centred approach utilizing Logistic Operating Curves to model terminal objectives, with a particular emphasis on quayside operations such as container handling by ship-to-shore cranes and terminal trucks. The paper explores the derivation of ideal and real Logistic Operating Curves for ship-to-shore cranes. Therefore, the well-known Kingman equation is extended to map the special characteristics of a closed queueing system. The simulation experiments conducted demonstrate that the proposed model provides sufficient accuracy in predicting mean productivities. The study concludes that the Logistic Operating Curves framework serves as an effective, understandable and adaptable method for improving terminal operations and highlights areas for further research.Publicationtype: Conference Paper122 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Concept of manufacturing control for a workstation with sequence-dependent setup times in a make-to-stock productionSequence-dependent setup times pose a challenge for a make-to-stock production. If companies apply setup-optimised sequencing to reduce setup efforts, varying replenishment times of the finished goods warehouse will increase the required safety inventories of the products. This publication presents a comprehensive manufacturing control concept for workstations with sequence-dependent setup times in make-to-stock production. The manufacturing control concept aims to effectively control the workstation and finished goods inventory, thereby enhancing the achievement of logistical objectives. The proposed concept integrates three relevant tasks of manufacturing control: order generation, capacity control, and sequencing. Cumulative Production Figures serve as a superordinate procedure, facilitating order generation and capacity control, while cyclical sequencing reduces setup efforts. Simulation experiments validate and evaluate the manufacturing control concept, demonstrating its effectiveness in managing setup efforts while limiting the negative impacts on required safety inventories. The results align with theoretical modeling and show potential for practical application in companies with make-to-stock production.Publicationtype: Conference Paper51 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , A coordinated approach to apply value stream analysis to the one-of-a-kind shipbuilding supply chain(Springer, 2025-08); ; ; ; In one-of-a-kind shipbuilding, shipyards rely on highly diversified supply chains involving multiple suppliers and subcontractors. The high complexity of the processes and the unique nature of the ships present challenges for the planning and coordination of the assembly at the shipyard and for production and logistics at the suppliers. The current organization leads to long delivery times, and high inventory costs. In addition, productivity losses occur due to extra work, e.g., searching for and modifying pre-manufactured components or delayed material supply at the assembly. Synchronizing the provision of materials from suppliers with the actual assembly offers promising potential for improvement. In one-of-a-kind production, Just-in-Sequence delivery is applicable only to a limited extent due to a lack of data and insufficient communication. The systematic use of digital assistance systems in the shipbuilding supply chain offers the potential to establish a consistent database and to provide user-oriented real-time information. As a first step, this paper performs an exhaustive analysis of the shipyard and supply chain processes regarding material and information flow, and the key figures from production planning and control. For this purpose, a value stream analysis adapted to the one-of-a-kind shipbuilding process was carried out at a shipyard and three of its suppliers.Publicationtype: Conference Paper62