EURO Journal on Transportation and Logistics最新文献

{"title":"Transshipment network design for express air cargo operations in China","authors":"Barış Yıldız ,&nbsp;Martin Savelsbergh ,&nbsp;Ali K. Dogru","doi":"10.1016/j.ejtl.2023.100120","DOIUrl":"https://doi.org/10.1016/j.ejtl.2023.100120","url":null,"abstract":"<div><p>We introduce a novel multimodal (ground and air transportation) network design model with transshipments for the transport of express cargo with heterogeneous service classes (i.e., next morning delivery, and next day delivery). We formulate this problem using a novel path-based mixed-integer program which seeks to maximize the demand (weight) served. We investigate the value of the proposed transshipment network under various operational conditions and by benchmarking against a direct shipment network and a network with a single transshipment point which mimics a classical star-shaped hub-and-spoke network. Our extensive computational study with real-world data from ShunFeng (SF) Express reveals that the integration of ground and air transportation improves the coverage and that transshipment enables serving a large number of origin–destination pairs with a small number of cargo planes. Importantly, we show that by simplifying handling, i.e., employing cross-docking rather than time-consuming sortation, a transshipment network can transport express cargo fast enough to meet demanding delivery deadlines. Finally, we find that increasing the efficiency of intra-city operations and extending the nightly operating time window are the most effective operational adjustments for further improving the performance of the proposed transshipment network.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"12 ","pages":"Article 100120"},"PeriodicalIF":2.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437623000171/pdfft?md5=94a2142b6148f417ecf0bc3e857918df&pid=1-s2.0-S2192437623000171-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134656687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Location, transshipment and routing: An adaptive transportation network integrating long-haul and local vehicle routing","authors":"Junko Hosoda ,&nbsp;Stephen J. Maher ,&nbsp;Yuji Shinano ,&nbsp;Jonas Christoffer Villumsen","doi":"10.1016/j.ejtl.2022.100091","DOIUrl":"10.1016/j.ejtl.2022.100091","url":null,"abstract":"<div><p>The routing of commodities is a tactical problem in supply chain management that aims to synchronise transportation services connecting a network of warehouses and consolidation locations. This paper considers the routing of commodities in a transportation network that is flexible in response to demand through changes to regional warehouse clustering and the designation of consolidation locations. Traditionally, warehouse clustering and consolidation locations are determined as part of strategic planning that is performed months to years in advance of operations—limiting the flexibility in transportation networks to respond to changes in demand. A mathematical programming-based algorithmic framework is proposed to integrate the strategic decisions of location planning with tactical decisions of vehicle routing and synchronisation. A multi-armed bandit problem is developed to explore warehouse clustering decisions and exploit those that lead to small transportation costs. An extensive computational study will show that the proposed algorithmic framework effectively integrates strategic and tactical planning decisions to reduce the overall transportation costs.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100091"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000164/pdfft?md5=b682e3c823f0fbae488b2759a763d7fe&pid=1-s2.0-S2192437622000164-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130342988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Does fleet standardization matter on profitability and financial policy response of airlines during COVID-19 pandemics in the U.S?","authors":"Metehan Atay ,&nbsp;Yunus Eroğlu ,&nbsp;Serap Ulusam Seckiner","doi":"10.1016/j.ejtl.2022.100088","DOIUrl":"10.1016/j.ejtl.2022.100088","url":null,"abstract":"<div><p>This study tries to find the contribution of the fleet standardization index of airline companies through the financial values of airlines in the COVID-19 pandemic crisis. One of the driving forces of this research is the stagnation in the aviation industry, along with the cessation of all international flights to prevent worse pandemic conditions. The main contribution of the study is clarifying the effect of fleet variety and its financial inferences about fleet standardization and crisis management relationship under inoperative service considerations. Data Envelopment Analysis (DEA) is used as a complementary method for standardization index calculations. According to the results, while the positive contribution of the fleet standardization index to operational revenues was observed, there was no sign of the effects of fleet standardization on the accounting performance of companies. Besides, fleet standardization enabled us to measure the response of Low-Cost Carrier (LCC) and Full-Service Carrier (FSC) airlines in crises. In this study, nine airline companies were selected from both trend representatives, and the results were presented for the U.S. It is found that fleet standardization is related to the adopted flight network type and profitability of each company directly. Results obtained revealed the relationship between fleet standardization and financial relations under inoperative conditions positively. In addition, inferences were made about the effects of the operational policies adopted by the companies.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100088"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000139/pdfft?md5=0db9fb18bcf0dcdd92663eaa2cc52097&pid=1-s2.0-S2192437622000139-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43674742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of raw material substitution on the facility location decision under a carbon tax policy","authors":"Y. Mechouar ,&nbsp;V. Hovelaque ,&nbsp;C. Gaigné","doi":"10.1016/j.ejtl.2021.100061","DOIUrl":"10.1016/j.ejtl.2021.100061","url":null,"abstract":"<div><p>Current environmental issues that have been made unavoidable by environmental regulations have become new constraints for industrial companies. In this paper, we consider a joint production-location problem for supply chains under a carbon tax policy on transport-related carbon emissions. We characterize the relationship that links the production level to the input quantities by considering a production function, namely, constant elasticity of substitution (CES) function. Our study focuses on the potential impact of increased transportation costs due to carbon taxation on the joint production-location decision. We find that the location-production configuration differs according to the degree of substitutability among the raw material quantities. More importantly, we observe that a higher carbon tax is more likely to cause a significant jump in firm location choice and a considerable change in production decisions when a firm has high flexibility in its ability to substitute among input quantities.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100061"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437621000285/pdfft?md5=8fbdbd6787a121b0c45785c59b55ba53&pid=1-s2.0-S2192437621000285-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116420405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Timetable merging for the Periodic Event Scheduling Problem","authors":"Niels Lindner ,&nbsp;Christian Liebchen","doi":"10.1016/j.ejtl.2022.100081","DOIUrl":"10.1016/j.ejtl.2022.100081","url":null,"abstract":"<div><p>We propose a new mixed integer programming based heuristic for computing new benchmark primal solutions for instances of the PESPlib. The PESPlib is a collection of instances for the Periodic Event Scheduling Problem (PESP), comprising periodic timetabling problems inspired by real-world railway timetabling settings, and attracting several international research teams during the last years. We describe two strategies to merge a set of good periodic timetables. These make use of the instance structure and minimum weight cycle bases, finally leading to restricted mixed integer programming formulations with tighter variable bounds. Implementing this timetable merging approach in a concurrent solver, we improve the objective values of the best known solutions for the smallest and largest PESPlib instances by 1.7 and 4.3 percent, respectively.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100081"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000085/pdfft?md5=32df7478e0500bdafae034ca3866baab&pid=1-s2.0-S2192437622000085-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122557255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrating weather impact in air traffic controller shift scheduling in remote and conventional towers","authors":"Eulalia Hernández-Romero ,&nbsp;Billy Josefsson ,&nbsp;Anastasia Lemetti ,&nbsp;Tatiana Polishchuk ,&nbsp;Christiane Schmidt","doi":"10.1016/j.ejtl.2022.100076","DOIUrl":"10.1016/j.ejtl.2022.100076","url":null,"abstract":"<div><p>Weather affects the work of air traffic controllers, however, for staff scheduling in Remote Tower Centers (RTCs) it has not been taken into account. We study the impact of various weather phenomena on air traffic controller (ATCO) taskload through structured interviews with ATCOs. We deduce taskload-driven impact factors and the corresponding thresholds for the intensity of the weather phenomena at several Swedish airports. To account for the uncertainty in the weather prediction, we obtain probabilistic weather data from Ensemble Prediction Systems (EPSs). Then we adjust our prior Mixed Integer Programming (MIP) model for RTC staff scheduling to account for uncertain impactful weather occurrences and yield a distribution for the necessary number of ATCOs for RTC staff scheduling. Our framework can be used for conventional towers as well.</p><p>We quantify the impact of weather by comparing the number of controllers necessary to operate at five Swedish airports from a remote tower during two example days in 2020, with and without taking weather events into account. In our calculations we use historical weather and flight data to show that ignoring weather impact may lead to significant understaffing at a RTC.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100076"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S219243762200005X/pdfft?md5=385176c287a3ec2e383a0c73ff130e99&pid=1-s2.0-S219243762200005X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132768239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Truck driver scheduling with interdependent routes and working time constraints","authors":"Carlo S. Sartori,&nbsp;Pieter Smet,&nbsp;Greet Vanden Berghe","doi":"10.1016/j.ejtl.2022.100092","DOIUrl":"10.1016/j.ejtl.2022.100092","url":null,"abstract":"<div><p>In transportation and logistic applications, scheduling hours of service for multiple, interdependent truck drivers to ensure compliance with regulatory resting requirements and service time windows is an extremely challenging task. Models previously designed to schedule truck drivers with interdependent routes have been capable of capturing such scenarios. However, until now, there has been no efficient way to schedule drivers when facing multiple types of interdependency constraints. To overcome this challenge, we introduce properties of truck driver schedules under working time constraints for single-day journeys. A two-stage algorithm exploits these properties to quickly produce schedules for a large number of truck routes. The algorithm minimizes the latest completion time of multiple truck schedules while ensuring that all drivers can complete their route with sufficient recovery periods and within their working hours. Computational experiments demonstrate the superiority of the approach compared to both existing algorithms and a mathematical programming approach.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100092"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000176/pdfft?md5=0d262dcb40a7b46b665533d646aa451c&pid=1-s2.0-S2192437622000176-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133412455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A game-theoretic approach for reliability evaluation of public transportation transfers with stochastic features","authors":"Giorgio Gnecco ,&nbsp;Yuval Hadas ,&nbsp;Marcello Sanguineti","doi":"10.1016/j.ejtl.2022.100090","DOIUrl":"https://doi.org/10.1016/j.ejtl.2022.100090","url":null,"abstract":"<div><p>A game-theoretic approach based on the framework of transferable-utility cooperative games is developed to assess the reliability of transfer nodes in public transportation networks in the case of stochastic transfer times. A cooperative game is defined, whose model takes into account the public transportation system, the travel times, the transfers and the associated stochastic transfer times, and the users’ demand. The transfer stops are modeled as the players of such a game, and the Shapley value – a solution concept in cooperative game theory – is used to identify their centrality and relative importance. Theoretical properties of the model are analyzed. A two-level Monte Carlo approximation of the vector of Shapley values associated with the nodes is introduced, which is efficient and able to take into account the stochastic features of the transportation network. The performance of the algorithm is investigated, together with that of its distributed computing variation. The usefulness of the proposed approach for planners and policy makers is shown with a simple example and on a case study from the public transportation network of Auckland, New Zealand.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100090"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000152/pdfft?md5=0124c37761fc61ea6cb79a3bd2163169&pid=1-s2.0-S2192437622000152-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91750818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Introduction to the special issue on Advances in Facility Location and Logistics","authors":"Isabel Correia,&nbsp;Teresa Melo,&nbsp;Olivier Péton","doi":"10.1016/j.ejtl.2022.100093","DOIUrl":"10.1016/j.ejtl.2022.100093","url":null,"abstract":"","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100093"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000188/pdfft?md5=fedf698b7f26d32907f2b76aa7d700c8&pid=1-s2.0-S2192437622000188-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130656969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated optimization of sequential processes: General analysis and application to public transport","authors":"Philine Schiewe ,&nbsp;Anita Schöbel","doi":"10.1016/j.ejtl.2022.100073","DOIUrl":"10.1016/j.ejtl.2022.100073","url":null,"abstract":"<div><p>Planning in public transportation is traditionally done in a sequential process: After the network design process, the lines and their frequencies are planned. When these are fixed, a timetable is determined and based on the timetable, the vehicle and crew schedules are optimized. After each step, passenger routes are adapted to model the behavior of the passengers as realistically as possible. It has been mentioned in many publications that such a sequential process is sub-optimal, and integrated approaches, mainly heuristics, are under consideration. Sequential planning is not only common in public transportation planning but also in many other applied problems, among others in supply chain management, or in organizing hospitals efficiently.</p><p>The contribution of this paper hence is two-fold: on the one hand, we develop an integrated integer programming formulation for the three planning stages line planning, (periodic) timetabling, and vehicle scheduling which also includes the integrated optimization of the passenger routes. This gives us an exact formulation rewriting the sequential approach as an integrated problem. We discuss properties of the integrated formulation and apply it experimentally to data sets from the <span>LinTim</span> library. On small examples, we get an exact optimal objective function value for the integrated formulation which can be compared with the outcome of the sequential process.</p><p>On the other hand, we propose a mathematical formulation for general sequential processes which can be used to build integrated formulations. For comparing sequential processes with their integrated counterparts we analyze the <em>price of sequentiality</em>, i.e., the ratio between the solution obtained by the sequential process and an integrated solution. We also experiment with different possibilities for partial integration of a subset of the sequential problems and again illustrate our results using the case of public transportation. The obtained results may be useful for other sequential processes.</p></div>","PeriodicalId":45871,"journal":{"name":"EURO Journal on Transportation and Logistics","volume":"11 ","pages":"Article 100073"},"PeriodicalIF":2.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2192437622000024/pdfft?md5=c82aaf734647a5a861d594049ee30c82&pid=1-s2.0-S2192437622000024-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126289125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}