Freight Operations Modelling for Urban Delivery and Pickup with Flexible Routing: Cluster Transport Modelling Incorporating Discrete-Event Simulation and GIS

Lyu, Zichong; Pons, Dirk J.; Zhang, Yilei; Ji, Zuzhen

doi:10.3390/infrastructures6120180

Cited by 9 publications

(11 citation statements)

References 58 publications

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“…El diseño de la logística de recuperación de residuos tiene sentido, según lo reportado por Lyu et al (2021), donde las técnicas de ruteo pueden combinar la simulación discreta por eventos para calcular los tiempos entre locales. Por ese motivo, se utiliza herramientas con información georreferenciada, lo que permite obtener las coordenadas de las ubicaciones con mayor precisión.…”

Section: Discussionunclassified

Propuesta de economía circular para la gestión de residuos de café en cafeterías de la ciudad de Lima en Perú

Díaz-Garay,

Medroa Delgado,

Taquía Gutiérrez

et al. 2024

Ing. ind. (Lima)

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El procesamiento del café para el consumo en cafeterías genera importantes cantidades de residuos, principalmente, cascarillas de café que, al ser tostadas, molidas y pasadas por las máquinas cafeteras, generan café gastado. Entonces, el problema es que no se cuenta con una adecuada gestión de dichos residuos ni son cuantificados; por ello, en este artículo se busca identificar alternativas de solución frente a tal problemática. Este estudio tiene un alcance exploratorio, para lo cual se utiliza una encuesta con una muestra obtenida por conveniencia de 18 cafeterías, de los cuales se obtuvo información sobre el interés de participar en un modelo de recolección de residuos de café. Asimismo, se utilizó un modelo de conglomerados para identificar la mejor manera de recolectar los residuos, para ello se determinó la ubicación de 72 cafeterías en la zona de estudio. Como resultado, se concluye que existe interés en la reutilización del café gastado aplicando un adecuado modelo de recojo de residuos por conglomerados.

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Section: Discussionunclassified

Propuesta de economía circular para la gestión de residuos de café en cafeterías de la ciudad de Lima en Perú

Díaz-Garay,

Medroa Delgado,

Taquía Gutiérrez

et al. 2024

Ing. ind. (Lima)

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“…Truck platoon planning Investigate truck platoon possibilities and evaluate waiting times [1] ABS Freight operations Evaluate freight-unloading operations [25] Freight pickup and delivery [26] DES DES Multimodal and intermodal transport Analyse multimodal freight-routing system [27] DES Railway network design Avoid collisions [28] ABS Analyse queuing systems of rail network [4] DES…”

Section: Logistics Areas Problems Methodsmentioning

confidence: 99%

Minimum Viable Model (MVM) Methodology for Integration of Agile Methods into Operational Simulation of Logistics

et al. 2022

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Background: Logistics problems involve a large number of complexities, which makes the development of models challenging. While computer simulation models are developed for addressing complexities, it is essential to ensure that the necessary operational behaviours are captured, and that the architecture of the model is suitable to represent them. The early stage of simulation modelling, known as conceptual modelling (CM), is thus dependent on successfully extracting tacit operational knowledge and avoiding misunderstanding between the client (customer of the model) and simulation analyst. Objective: This paper developed a methodology for managing the knowledge-acquisition process needed to create a sufficient simulation model at the early or the CM stage to ensure the correctness of operation representation. Methods: A minimum viable model (MVM) methodology was proposed with five principles relevant to CM: iterative development, embedded communication, soliciting tacit knowledge, interactive face validity, and a sufficient model. The method was validated by a case study of freight operations, and the results were encouraging. Conclusions: The MVM method improved the architecture of the simulation model through eliciting tacit knowledge and clearing up communication misunderstandings. It also helped shape the architecture of the model towards the features most appreciated by the client, and features not needed in the model. Originality: The novel contribution of this work is the presentation of a method for eliciting tacit information from industrial clients, and building a minimally sufficient simulation model at the early modelling stage. The framework is demonstrated for logistics operations, though the principles may benefit simulation practitioners more generally.

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“…Furthermore, it allows various levels of complexity in modelling representation. For example, models may be relatively complex intersection-based models that represent route segments [32] or simple two-tier architecture models [33], depending on the purposes of the simulation.…”

Section: Discrete Event Simulationmentioning

confidence: 99%

Emissions and Total Cost of Ownership for Diesel and Battery Electric Freight Pickup and Delivery Trucks in New Zealand: Implications for Transition

2023

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Road freight transport contributes to a large portion of greenhouse gas (GHG) emissions. Transitioning diesel to battery electric (BE) trucks is an attractive sustainability solution. To evaluate the BE transition in New Zealand (NZ), this study analysed the life-cycle GHG emissions and total cost of ownership (TCO) of diesel and BE trucks based on real industry data. The freight pickup and delivery (PUD) operations were simulated by a discrete-event simulation (DES) model. Spreadsheet models were constructed for life-cycle assessment (LCA) and TCO for a truck operational lifetime of 10 years (first owner), this being the typical usage of a tier-one freight company in New Zealand (NZ). The whole-of-life emissions from the diesel and BE trucks are 717,641 kg and 62,466 kg CO2e, respectively. For the use phase (first owner), the emissions are 686,754 kg and 8714 kg CO2e, respectively; i.e., the BE is 1.27% of the diesel truck. The TCO results are 528,124 NZ dollars (NZD) and 529,573 NZD (as of 2022), respectively. The battery price and road user charge are the most sensitive variables for the BE truck. BE truck transitions are explored for freight companies, customers, and the government. For the purchase of BE trucks, the break-even point is about 9.5 years, and straight-line depreciation increases freight costs by 8.3%. Government subsidy options are evaluated. The cost of emission credits on the emissions trading scheme (ETS) is not expected to drive the transition. An integrated model is created for DES freight logistics, LCA emissions, and TCO costs supported by real industry data. This allows a close examination of the transition economics.

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Freight Operations Modelling for Urban Delivery and Pickup with Flexible Routing: Cluster Transport Modelling Incorporating Discrete-Event Simulation and GIS

Cited by 9 publications

References 58 publications

Propuesta de economía circular para la gestión de residuos de café en cafeterías de la ciudad de Lima en Perú

Propuesta de economía circular para la gestión de residuos de café en cafeterías de la ciudad de Lima en Perú

Minimum Viable Model (MVM) Methodology for Integration of Agile Methods into Operational Simulation of Logistics

Emissions and Total Cost of Ownership for Diesel and Battery Electric Freight Pickup and Delivery Trucks in New Zealand: Implications for Transition

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