Pub Date : 2026-01-28DOI: 10.1016/j.cie.2026.111837
Mahsa Mohammadi , Babak Mohamadpour Tosarkani
This study aims to develop a novel graph theory-based clustering algorithm for large-scale logistics planning problems focusing on the distribution of face masks by various transportation modes under uncertainty. A robust multi-objective, mixed-integer linear programming model (MILPM) is utilized to handle imprecise parameters (e.g., demand and processing time). The proposed model supports decision-makers in designing a sustainable closed-loop supply chain network for the optimal face mask distribution under time window limitations. A sample average approximation methodology is applied to tackle the large-scale case study. Furthermore, a graph theory-based clustering algorithm is proposed to accelerate the scenario decomposition approach since it deals with less scenarios in comparison with sample average approximation and scenario decomposition. Silhouette analysis is conducted to measure the performance and accuracy of the generated clusters. Sensitivity analyses are implemented to validate the efficiency and applicability of the presented solution approach. A series of scenarios is set to represent supply chain network disruptions with unknown probabilities. The outcome of this study denotes the optimal flow of face masks and the optimum number of facilities at the time of the COVID-19 outbreak in Toronto, Canada.
{"title":"Harmonizing sustainability and resiliency: A novel robust-stochastic decomposition approach for effective mask distribution and recycling","authors":"Mahsa Mohammadi , Babak Mohamadpour Tosarkani","doi":"10.1016/j.cie.2026.111837","DOIUrl":"10.1016/j.cie.2026.111837","url":null,"abstract":"<div><div>This study aims to develop a novel graph theory-based clustering algorithm for large-scale logistics planning problems focusing on the distribution of face masks by various transportation modes under uncertainty. A robust multi-objective, mixed-integer linear programming model <em>(MILPM)</em> is utilized to handle imprecise parameters (e.g., demand and processing time). The proposed model supports decision-makers in designing a sustainable closed-loop supply chain network for the optimal face mask distribution under time window limitations. A sample average approximation methodology is applied to tackle the large-scale case study. Furthermore, a graph theory-based clustering algorithm is proposed to accelerate the scenario decomposition approach since it deals with less scenarios in comparison with sample average approximation and scenario decomposition. Silhouette analysis is conducted to measure the performance and accuracy of the generated clusters. Sensitivity analyses are implemented to validate the efficiency and applicability of the presented solution approach. A series of scenarios is set to represent supply chain network disruptions with unknown probabilities. The outcome of this study denotes the optimal flow of face masks and the optimum number of facilities at the time of the COVID-19 outbreak in Toronto, Canada.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111837"},"PeriodicalIF":6.5,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-28DOI: 10.1016/j.cie.2026.111871
Qiang Wan , Yanni An , Mei Zhu
Current research that integrates the three functions of production planning, maintenance, and quality monitoring suffers from three significant shortcomings: (1) Assume that there is only one identifiable source of variation within the process. Due to the inherent complexity characteristic of most real-world manufacturing operations, the simplified assumption of a single assignable cause is seldom observed in actual industrial settings. When the actual assignable cause of a process shift does not match the one anticipated in quality monitoring, performance may be subpar in both economic and statistical terms. (2) Monitoring a single quality characteristic, however, in actual conditions, multiple process quality characteristics should be monitored simultaneously. (3) To simplify the model, the buffer inventory time is established at the start of the cycle. However, if the buffer is loaded too early, it may result in excess inventory holding expenses. To handle these shortcomings, this work establishes an integration scheme for production, multivariate statistical process monitoring and maintenance planning that considers dynamical replenishment and multiple assignable causes. Under economic–statistical quality constraints, a customized genetic algorithm is employed to optimize the expected total cost of each process cycle. In the comparative study, the proposed model is compared with integrated models using a single assignable cause, MEWMA, and MCUSUM charts, highlighting its superior economic and statistical performance. Finally, a design of experiments (DOE)-based sensitivity analysis is carried out on the principal process parameters and the average total cost per cycle.
{"title":"Optimal control policy for combined production–maintenance and multivariate quality monitoring of an imperfect manufacturing system with replenishment and assignable causes","authors":"Qiang Wan , Yanni An , Mei Zhu","doi":"10.1016/j.cie.2026.111871","DOIUrl":"10.1016/j.cie.2026.111871","url":null,"abstract":"<div><div>Current research that integrates the three functions of production planning, maintenance, and quality monitoring suffers from three significant shortcomings: (1) Assume that there is only one identifiable source of variation within the process. Due to the inherent complexity characteristic of most real-world manufacturing operations, the simplified assumption of a single assignable cause is seldom observed in actual industrial settings. When the actual assignable cause of a process shift does not match the one anticipated in quality monitoring, performance may be subpar in both economic and statistical terms. (2) Monitoring a single quality characteristic, however, in actual conditions, multiple process quality characteristics should be monitored simultaneously. (3) To simplify the model, the buffer inventory time is established at the start of the cycle. However, if the buffer is loaded too early, it may result in excess inventory holding expenses. To handle these shortcomings, this work establishes an integration scheme for production, multivariate statistical process monitoring and maintenance planning that considers dynamical replenishment and multiple assignable causes. Under economic–statistical quality constraints, a customized genetic algorithm is employed to optimize the expected total cost of each process cycle. In the comparative study, the proposed model is compared with integrated models using a single assignable cause, MEWMA, and MCUSUM charts, highlighting its superior economic and statistical performance. Finally, a design of experiments (DOE)-based sensitivity analysis is carried out on the principal process parameters and the average total cost per cycle.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111871"},"PeriodicalIF":6.5,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-25DOI: 10.1016/j.cie.2026.111848
Kung-Jeng Wang , Natalia Febri
Vending machines (VMs) serve as an important aspect of automated retail, delivering both flexibility in operations and convenience for consumers. However, as VM networks expand, managers face growing logistical challenges in determining optimal deployment locations, product selection and allocation, and restocking schedules. This study proposes a novel bi-layer optimization framework that jointly optimizes deployment, product selection and allocation, and a synchronized replenishment cycle. To address the complexity of this large-scale combinatorial problem, we develop a hybrid Tabu Search and Evolution Strategy (TS-ES) algorithm. Extensive experiments show that the synchronized replenishment cycle yields better performance than the independent cycle. Comparative analysis demonstrates that the hybrid TS-ES algorithm consistently achieves higher objective values than standalone TS, genetic algorithm (GA), random search (RS), and iterative local search (ILS) across various problem scales. This research contributes to the current body of knowledge by introducing a comprehensive framework that improves VM operational performance and serves as a practical resource for optimizing the logistics and profitability within VM networks.
{"title":"Joint optimization of vending machine deployment and shelf display design with synchronized merchandise replenishment","authors":"Kung-Jeng Wang , Natalia Febri","doi":"10.1016/j.cie.2026.111848","DOIUrl":"10.1016/j.cie.2026.111848","url":null,"abstract":"<div><div>Vending machines (VMs) serve as an important aspect of automated retail, delivering both flexibility in operations and convenience for consumers. However, as VM networks expand, managers face growing logistical challenges in determining optimal deployment locations, product selection and allocation, and restocking schedules. This study proposes a novel bi-layer optimization framework that jointly optimizes deployment, product selection and allocation, and a synchronized replenishment cycle. To address the complexity of this large-scale combinatorial problem, we develop a hybrid Tabu Search and Evolution Strategy (TS-ES) algorithm. Extensive experiments show that the synchronized replenishment cycle yields better performance than the independent cycle. Comparative analysis demonstrates that the hybrid TS-ES algorithm consistently achieves higher objective values than standalone TS, genetic algorithm (GA), random search (RS), and iterative local search (ILS) across various problem scales. This research contributes to the current body of knowledge by introducing a comprehensive framework that improves VM operational performance and serves as a practical resource for optimizing the logistics and profitability within VM networks.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111848"},"PeriodicalIF":6.5,"publicationDate":"2026-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Intertwined supply networks are collaborative, cross-industry supply chains characterized by a high level of interconnectedness among their entities. This study demonstrates that integrating circular economy principles into such networks can cut greenhouse gas emissions by 4.97% and reduce total system costs by 11.03%, while strengthening economic efficiency and social responsibility under uncertainty. To realize these improvements, a novel multi-objective non-linear mixed-integer mathematical model is proposed with an embedded scenario differentiation mechanism that enables evaluation of configurations, from traditional decentralized supply chains to complex intertwined networks with varying levels of circularity, within a unified analytical model. The objective functions are to minimize system costs and greenhouse gas emissions and maximize social responsibility for optimal location decisions under uncertainty. The proposed model is first verified using the AUGMECON-2 method and validated via a case study of an intertwined pharmaceutical-bioplastic supply network, complemented by numerical experiments, sensitivity analyses, and a comparative study using the Grey Wolf Optimizer for large-scale instances.
{"title":"A scenario-adaptive optimization model for circular intertwined supply network design under uncertainty","authors":"Mohaddeseh Roshan , Jessica Olivares-Aguila , Waguih ElMaraghy","doi":"10.1016/j.cie.2026.111849","DOIUrl":"10.1016/j.cie.2026.111849","url":null,"abstract":"<div><div>Intertwined supply networks are collaborative, cross-industry supply chains characterized by a high level of interconnectedness among their entities. This study demonstrates that integrating circular economy principles into such networks can cut greenhouse gas emissions by 4.97% and reduce total system costs by 11.03%, while strengthening economic efficiency and social responsibility under uncertainty. To realize these improvements, a novel multi-objective non-linear mixed-integer mathematical model is proposed with an embedded scenario differentiation mechanism that enables evaluation of configurations, from traditional decentralized supply chains to complex intertwined networks with varying levels of circularity, within a unified analytical model. The objective functions are to minimize system costs and greenhouse gas emissions and maximize social responsibility for optimal location decisions under uncertainty. The proposed model is first verified using the AUGMECON-2 method and validated via a case study of an intertwined pharmaceutical-bioplastic supply network, complemented by numerical experiments, sensitivity analyses, and a comparative study using the Grey Wolf Optimizer for large-scale instances.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111849"},"PeriodicalIF":6.5,"publicationDate":"2026-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-25DOI: 10.1016/j.cie.2026.111847
Lina Aboueljinane , Maroua Sbiti , Youness Frichi
While Industrial Symbiosis (IS) is a cornerstone of the circular economy, its operational viability remains vulnerable to market volatility and regulatory shifts. This study investigates the resilience and sustainability of a symbiotic system under five carbon regulation mechanisms. A capacitated joint production planning problem is formulated as a Mixed-Integer Linear Program (MILP) and compared against a Simulation-Based Optimization framework using Differential Evolution (DE). To evaluate global robustness, we conducted a massive stress-test across 5000 scenarios generated via Latin Hypercube Sampling (LHS) and analyzed using Explainable AI (Random Forest). The results reveal a critical “Structural Fragility”: the deterministic MILP exhibits a 60% failure rate, categorized either as Mathematical Infeasibility (solver incapacity) or Physical Operational Failure (inventory overflows during simulation), driven by capacity bottlenecks and demand surges. In contrast, the proposed framework guarantees 99.76% % feasibility by dynamically adjusting safety stocks, identifying robust “best-effort” solutions. A multi-objective Pareto analysis further quantifies the trade-offs, revealing a Shadow Price of Resilience and an Environmental Rebound Effect. Among regulatory mechanisms, Cap-and-Trade emerges as the “smartest“ policy, enabling a dynamic arbitrage capability, where the system intelligently switches between production and carbon trading based on market signals. This study contributes a unified, data-driven framework for designing resilient, low-carbon manufacturing systems capable of withstanding real-world uncertainty.
{"title":"Simulation-based optimization of industrial symbiosis under carbon regulations: towards sustainable and resilient production networks","authors":"Lina Aboueljinane , Maroua Sbiti , Youness Frichi","doi":"10.1016/j.cie.2026.111847","DOIUrl":"10.1016/j.cie.2026.111847","url":null,"abstract":"<div><div>While Industrial Symbiosis (IS) is a cornerstone of the circular economy, its operational viability remains vulnerable to market volatility and regulatory shifts. This study investigates the resilience and sustainability of a symbiotic system under five carbon regulation mechanisms. A capacitated joint production planning problem is formulated as a Mixed-Integer Linear Program (MILP) and compared against a Simulation-Based Optimization framework using Differential Evolution (DE). To evaluate global robustness, we conducted a massive stress-test across 5000 scenarios generated via Latin Hypercube Sampling (LHS) and analyzed using Explainable AI (Random Forest). The results reveal a critical “Structural Fragility”: the deterministic MILP exhibits a 60% failure rate, categorized either as Mathematical Infeasibility (solver incapacity) or Physical Operational Failure (inventory overflows during simulation), driven by capacity bottlenecks and demand surges. In contrast, the proposed framework guarantees 99.76% % feasibility by dynamically adjusting safety stocks, identifying robust “best-effort” solutions. A multi-objective Pareto analysis further quantifies the trade-offs, revealing a Shadow Price of Resilience and an Environmental Rebound Effect. Among regulatory mechanisms, Cap-and-Trade emerges as the “smartest“ policy, enabling a dynamic arbitrage capability, where the system intelligently switches between production and carbon trading based on market signals. This study contributes a unified, data-driven framework for designing resilient, low-carbon manufacturing systems capable of withstanding real-world uncertainty.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111847"},"PeriodicalIF":6.5,"publicationDate":"2026-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-23DOI: 10.1016/j.cie.2026.111836
Yuheng Dang , Hengte Du , Xu Wang , Xing Pan
Multi-agent systems (MAS), as a representative complex system, have become crucial for analyzing cluster and heterogeneous behaviors in various domains such as biology, social science, military weapon and manufacturing. The MAS exhibits adaptability to environmental changes and can dynamically reconfigure its structure to enhance resilience while reducing vulnerability. However, existing research primarily focuses on proposing reconfiguration strategies to enhance resilience but lacks in-depth exploration of reconfigurable design and capability constraints. The study proposes a reconfigurable operation-loop network (RON) model for resilience analysis and reconfigurable design of MAS based on the operation loop. Subsequently, the performance measurement and resilience metric are presented for RON considering mission load. Furthermore, the mathematical model and optimization framework of reconfiguration are established with the consideration of reconfigurable attributes and the resilience objective. Finally, the feasibility, effectiveness, and superiority of the proposed models and metrics are illustrated through extensive experiments on case based on an emergency response system. Numerical results demonstrate that the performance metric considering mission load contributes to a more accurate assessment of RON resilience than conventional network metrics. This work could yield valuable insights for the reconfigurable and resilient design of MAS, while providing guidance and serving as a reference for future research efforts.
{"title":"Reconfigurable operation-loop network modeling and resilience optimization considering mission load","authors":"Yuheng Dang , Hengte Du , Xu Wang , Xing Pan","doi":"10.1016/j.cie.2026.111836","DOIUrl":"10.1016/j.cie.2026.111836","url":null,"abstract":"<div><div>Multi-agent systems (MAS), as a representative complex system, have become crucial for analyzing cluster and heterogeneous behaviors in various domains such as biology, social science, military weapon and manufacturing. The MAS exhibits adaptability to environmental changes and can dynamically reconfigure its structure to enhance resilience while reducing vulnerability. However, existing research primarily focuses on proposing reconfiguration strategies to enhance resilience but lacks in-depth exploration of reconfigurable design and capability constraints. The study proposes a reconfigurable operation-loop network (RON) model for resilience analysis and reconfigurable design of MAS based on the operation loop. Subsequently, the performance measurement and resilience metric are presented for RON considering mission load. Furthermore, the mathematical model and optimization framework of reconfiguration are established with the consideration of reconfigurable attributes and the resilience objective. Finally, the feasibility, effectiveness, and superiority of the proposed models and metrics are illustrated through extensive experiments on case based on an emergency response system. Numerical results demonstrate that the performance metric considering mission load contributes to a more accurate assessment of RON resilience than conventional network metrics. This work could yield valuable insights for the reconfigurable and resilient design of MAS, while providing guidance and serving as a reference for future research efforts.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111836"},"PeriodicalIF":6.5,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-23DOI: 10.1016/j.cie.2026.111831
Tao Yang , Fang Jiang , Jing Fan , Jiafu Su , Wei Chen
Cloud manufacturing (CMfg) has emerged as a transformative paradigm facilitating the service-oriented transition of manufacturing enterprises. A pivotal challenge within CMfg is service composition and optimal selection (SCOS)—the process of identifying the best combination of services from distributed virtual resource pools to meet customized requirements. However, existing SCOS evaluation frameworks often lack systematic indicators for green production, consequently failing to align with increasingly stringent environmental regulations and hindering sustainable development. To bridge this gap, this paper introduces a comprehensive three-dimensional evaluation system that integrates environment, service performance, and service collaboration dimensions, employing a game-theoretic approach to assign comprehensive weights. Subsequently, a service composition and optimal selection model incorporating corporate green manufacturing (SCOS-CGM) is proposed. To address the SCOS-CGM model, we develop a hybrid approach combining an Improved Particle Swarm Optimization Algorithm with the VIKOR method (IPSO-VIKOR). Finally, a case study involving electric drive systems for new energy vehicles validates the practical applicability and effectiveness of the proposed model and method.
{"title":"An efficient service composition optimization method for Cloud manufacturing based on an IPSO-VIKOR hybrid method","authors":"Tao Yang , Fang Jiang , Jing Fan , Jiafu Su , Wei Chen","doi":"10.1016/j.cie.2026.111831","DOIUrl":"10.1016/j.cie.2026.111831","url":null,"abstract":"<div><div>Cloud manufacturing (CMfg) has emerged as a transformative paradigm facilitating the service-oriented transition of manufacturing enterprises. A pivotal challenge within CMfg is service composition and optimal selection (SCOS)—the process of identifying the best combination of services from distributed virtual resource pools to meet customized requirements. However, existing SCOS evaluation frameworks often lack systematic indicators for green production, consequently failing to align with increasingly stringent environmental regulations and hindering sustainable development. To bridge this gap, this paper introduces a comprehensive three-dimensional evaluation system that integrates environment, service performance, and service collaboration dimensions, employing a game-theoretic approach to assign comprehensive weights. Subsequently, a service composition and optimal selection model incorporating corporate green manufacturing (SCOS-CGM) is proposed. To address the SCOS-CGM model, we develop a hybrid approach combining an Improved Particle Swarm Optimization Algorithm with the VIKOR method (IPSO-VIKOR). Finally, a case study involving electric drive systems for new energy vehicles validates the practical applicability and effectiveness of the proposed model and method.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111831"},"PeriodicalIF":6.5,"publicationDate":"2026-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-22DOI: 10.1016/j.cie.2026.111834
Di Huang, Ziyu Liu, Tianle Li, Ziyuan Gu
Developed transportation infrastructure facilitates intercity commuting, which is characterized by closed highway systems, fixed schedules for modes of rail transit, requiring precise synchronization of arrival and departure times. Consequently, integrated decision-making involving mode, route, and departure time across both intracity and intercity segments is essential. However, most departure time user equilibrium (DTUE) studies focus on single cities, overlooking the interaction between intracity and intercity travel decisions. While extensive historical travel data exist, directly using all data to reduce computational efficiency is complicated by daily fluctuations. Thus, identifying historical scenarios matching current conditions is crucial. Given the limited interpretability of prediction models, this paper proposes a Jaccard mean square similarity (JMSS) based historical result filtering method to ensure historical results reflect current scenarios. A super network integrating multimodal intercity and intracity travel is introduced, allowing travelers to move between cities seamlessly. A quasi-dynamic traffic assignment algorithm considering residual queues is developed to solve the DTUE problem, accounting for rail transit’s periodic operation and passenger transfer demands. Results show JMSS maintains low computation time, and increased similarity reduces iterations for convergence and total computation time. Furthermore, rising travel demand compels more travelers to adjust departure times earlier or later to minimize generalized travel costs, with rail transit becoming a preferred option for many due to its stable scheduling and lower congestion impact.
{"title":"Data-driven departure time and traffic assignment model for intercity multimodal transport system","authors":"Di Huang, Ziyu Liu, Tianle Li, Ziyuan Gu","doi":"10.1016/j.cie.2026.111834","DOIUrl":"10.1016/j.cie.2026.111834","url":null,"abstract":"<div><div>Developed transportation infrastructure facilitates intercity commuting, which is characterized by closed highway systems, fixed schedules for modes of rail transit, requiring precise synchronization of arrival and departure times. Consequently, integrated decision-making involving mode, route, and departure time across both intracity and intercity segments is essential. However, most departure time user equilibrium (DTUE) studies focus on single cities, overlooking the interaction between intracity and intercity travel decisions. While extensive historical travel data exist, directly using all data to reduce computational efficiency is complicated by daily fluctuations. Thus, identifying historical scenarios matching current conditions is crucial. Given the limited interpretability of prediction models, this paper proposes a Jaccard mean square similarity (JMSS) based historical result filtering method to ensure historical results reflect current scenarios. A super network integrating multimodal intercity and intracity travel is introduced, allowing travelers to move between cities seamlessly. A quasi-dynamic traffic assignment algorithm considering residual queues is developed to solve the DTUE problem, accounting for rail transit’s periodic operation and passenger transfer demands. Results show JMSS maintains low computation time, and increased similarity reduces iterations for convergence and total computation time. Furthermore, rising travel demand compels more travelers to adjust departure times earlier or later to minimize generalized travel costs, with rail transit becoming a preferred option for many due to its stable scheduling and lower congestion impact.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111834"},"PeriodicalIF":6.5,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-22DOI: 10.1016/j.cie.2026.111842
Pei-Yang Wu , Ren-Yong Guo , Ying-En Ge
This study investigates the carriage parking problem in the dynamic autonomous non-stop rail transit (DANRT) system, with a particular focus on the movement behaviors of passengers. A cell transmission model (CTM) is formulated to depict the movement behaviors of passengers in the DANRT system and the interactions between passengers. The parameters in the CTM are calibrated by using a set of video recordings and reproducing the arching phenomenon of passengers. To optimize carriage parking schemes, a swarm intelligence-based heuristic algorithm is proposed, where the CTM is embedded into the evaluation process to dynamically assess passenger moving efficiency during each iteration. We conduct a set of numerical experiments to evaluate the effect of algorithm parameters on algorithm performance and the influence of passenger behaviors on passenger waiting times. The results demonstrate that the algorithm can further reduce the theoretical minimum total passenger waiting time obtained without considering passenger movement behaviors and interactions by about 6%. Additionally, overall system efficiency reaches its maximum when the frequency of carriage re-selection behavior of passengers remains at a moderate level. Moreover, it is essential to deliberately designate carriages for passengers to improve the travel efficiency of passengers in the DANRT system.
{"title":"Optimization of carriage parking based on simulation of passenger dynamics in the dynamic autonomous non-stop rail transit system","authors":"Pei-Yang Wu , Ren-Yong Guo , Ying-En Ge","doi":"10.1016/j.cie.2026.111842","DOIUrl":"10.1016/j.cie.2026.111842","url":null,"abstract":"<div><div>This study investigates the carriage parking problem in the dynamic autonomous non-stop rail transit (DANRT) system, with a particular focus on the movement behaviors of passengers. A cell transmission model (CTM) is formulated to depict the movement behaviors of passengers in the DANRT system and the interactions between passengers. The parameters in the CTM are calibrated by using a set of video recordings and reproducing the arching phenomenon of passengers. To optimize carriage parking schemes, a swarm intelligence-based heuristic algorithm is proposed, where the CTM is embedded into the evaluation process to dynamically assess passenger moving efficiency during each iteration. We conduct a set of numerical experiments to evaluate the effect of algorithm parameters on algorithm performance and the influence of passenger behaviors on passenger waiting times. The results demonstrate that the algorithm can further reduce the theoretical minimum total passenger waiting time obtained without considering passenger movement behaviors and interactions by about 6%. Additionally, overall system efficiency reaches its maximum when the frequency of carriage re-selection behavior of passengers remains at a moderate level. Moreover, it is essential to deliberately designate carriages for passengers to improve the travel efficiency of passengers in the DANRT system.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111842"},"PeriodicalIF":6.5,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146045177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-20DOI: 10.1016/j.cie.2026.111826
Xinghan Chen , Yuzhilin Hai , Maoxiang Lang
This study investigates a bi-objective joint scheduling problem of vehicle dispatching with cross-dock door assignment (VDCDAP) in the intelligent warehouse system of a less-than-truckload (LTL) logistics hub, aiming to minimize both the total operation delay time (for trucks) and makespan (for dock doors). To accommodate real-time operational dynamics, we introduce a relaxed time window to mitigate discrepancies between expected and actual parallel cross-docking timelines. A rolling horizon-based adaptive large neighborhood search (RH-ALNS) algorithm is developed to solve the model, which considers heterogeneous trucks and dock doors operating under mixed service modes. By deferring real-time demand for centralized scheduling, the entire timeline is discretized into multiple time horizons, allowing the system to respond to dynamic task requirements. As a case study, the proposed approach is applied to a real-world LTL logistics hub in China. The results show that the optimization approach not only yields scheduling schemes that simultaneously dispatch trucks, assign dock doors, and generate operational sequencing timetables, but also significantly improves operational fluency and cross-dock utilization. Moreover, it closely approximates online scheduling with a CPU time of 158 s per 60 min. The developed algorithm is experimentally compared with other solvers and heuristics, proved to be beneficial for obtaining robust solutions across different case scales, service modes, and time horizons.
{"title":"A rolling horizon based bi-objective optimization approach for dynamic truck dispatching with cross-dock door assignment","authors":"Xinghan Chen , Yuzhilin Hai , Maoxiang Lang","doi":"10.1016/j.cie.2026.111826","DOIUrl":"10.1016/j.cie.2026.111826","url":null,"abstract":"<div><div>This study investigates a bi-objective joint scheduling problem of vehicle dispatching with cross-dock door assignment (VDCDAP) in the intelligent warehouse system of a less-than-truckload (LTL) logistics hub, aiming to minimize both the total operation delay time (for trucks) and makespan (for dock doors). To accommodate real-time operational dynamics, we introduce a relaxed time window to mitigate discrepancies between expected and actual parallel cross-docking timelines. A rolling horizon-based adaptive large neighborhood search (RH-ALNS) algorithm is developed to solve the model, which considers heterogeneous trucks and dock doors operating under mixed service modes. By deferring real-time demand for centralized scheduling, the entire timeline is discretized into multiple time horizons, allowing the system to respond to dynamic task requirements. As a case study, the proposed approach is applied to a real-world LTL logistics hub in China. The results show that the optimization approach not only yields scheduling schemes that simultaneously dispatch trucks, assign dock doors, and generate operational sequencing timetables, but also significantly improves operational fluency and cross-dock utilization. Moreover, it closely approximates online scheduling with a CPU time of 158 s per 60 min. The developed algorithm is experimentally compared with other solvers and heuristics, proved to be beneficial for obtaining robust solutions across different case scales, service modes, and time horizons.</div></div>","PeriodicalId":55220,"journal":{"name":"Computers & Industrial Engineering","volume":"214 ","pages":"Article 111826"},"PeriodicalIF":6.5,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}