International Transactions in Operational Research最新文献_第6页

A revenue management approach for tourism logistics optimization 优化旅游物流的收益管理方法

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-06-08 DOI: 10.1111/itor.13494

Luigi Di Puglia Pugliese, Francesca Guerriero, Giovanna Miglionico

{"title":"A revenue management approach for tourism logistics optimization","authors":"Luigi Di Puglia Pugliese, Francesca Guerriero, Giovanna Miglionico","doi":"10.1111/itor.13494","DOIUrl":"10.1111/itor.13494","url":null,"abstract":"Tourism is a very complex industry and represents one of the most profitable activity in the world. A tourist product requires the execution of several multifaceted activities. Indeed, transportation, accommodation, entertainment, food, and beverages represent only some of the products/services required by a tourist. It is evident that a single enterprise cannot provide all the components of a tourist product, but several interrelated actors should collaborate. This leads to a very complex supply tourist chain that needs to be optimized. The relevant theories and methods of logistics can be used to efficiently manage all the flows that are generated in a tourist chain. The definition of appropriate policies, at the different nodes of the chain, can improve the performance of all the actors involved in tourism logistics. In this paper, we concentrate our attention on tour operators that are relevant in the touristic logistic chain since they are involved in several activities. We introduce different revenue management policies to support tour operators in the decision of accepting the most profitable tourist requests. A request consists of flights and hotel booking, characterized by a starting time of the trip and the length of stay at the destination. We allow for various combinations of flight legs and multiple categories of hotels to accommodate a variety of customer preferences and needs. A computational study is carried out by considering different scenarios, and the performance of the considered revenue management policies is analyzed in detail.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 1","pages":"353-383"},"PeriodicalIF":3.1,"publicationDate":"2024-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13494","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141370549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of drones in disaster response: A literature review of operations research applications 无人机在救灾中的作用：运筹学应用文献综述

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-06-05 DOI: 10.1111/itor.13484

Ecem Yucesoy, Burcu Balcik, Elvin Coban

引用次数: 0

Road network, landing location, and routing optimization for forest smallholders landscapes 森林小农户景观的路网、着陆点和路线优化

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-30 DOI: 10.1111/itor.13485

Miguel F. Constantino, Marta Mesquita, Susete Marques, Sándor F. Tóth, José G. Borges

{"title":"Road network, landing location, and routing optimization for forest smallholders landscapes","authors":"Miguel F. Constantino, Marta Mesquita, Susete Marques, Sándor F. Tóth, José G. Borges","doi":"10.1111/itor.13485","DOIUrl":"10.1111/itor.13485","url":null,"abstract":"We present two mixed integer linear programming (MILP) formulations for a well-known integrated network, timber landing location, and routing problem that arises in forest management. The models seek to jointly optimize the construction and maintenance schedule of forest road networks with landing site selection and transportation routing for timber production. This problem is, in general, difficult to solve as it contains the so-called fixed charge network flow problem, which is known to be NP-hard. One of the proposed MILP formulations considers 3-index continuous variables to represent timber flows on road segments in each period. The presence of Big-M constraints leads to weak linear relaxation bounds. Disaggregating flow variables, according to timber origin, results in a novel 4-index formulation with very tight linear relaxation bounds. Nevertheless, the number of variables increases prohibitively. This research makes use of spatial constraints common to Smallholding Forested Landscapes to develop a solution approach that reduces the number of flow variables in the new 4-index model. Results from a real-world case study located in Northwest Portugal show that, with the 4-index formulation, the proposed solution approach makes it possible to obtain optimal solutions in a short computational time.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 2","pages":"888-917"},"PeriodicalIF":3.1,"publicationDate":"2024-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13485","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Is it worth it? Using DEA to analyze the efficiency gains and costs of merging university departments: a case study of the Complutense University of Madrid 值得吗？利用 DEA 分析大学院系合并的效率收益和成本：马德里康普斯顿大学案例研究

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-28 DOI: 10.1111/itor.13488

Daniel Santín, Juan Tejada

{"title":"Is it worth it? Using DEA to analyze the efficiency gains and costs of merging university departments: a case study of the Complutense University of Madrid","authors":"Daniel Santín, Juan Tejada","doi":"10.1111/itor.13488","DOIUrl":"https://doi.org/10.1111/itor.13488","url":null,"abstract":"The aim of this paper is to analyze the benefits of the university department merger undertaken by the Complutense University of Madrid (UCM) in 2017. The merger led to a new structure in which the original 184 departments were reduced to 97. To do this, we use the data envelopment analysis (DEA) to evaluate the efficiency gains of a merger process decomposing efficiency into three savings effects: learning, harmony, and scale effects. They decomposed efficiency into three savings effects: learning, harmony, and scale effects. Additionally, we introduce a new regulatory effect, which accounts for other potential recursive savings not included in the DEA analysis. Our results suggest that the merger process undertaken by the UCM achieved savings of around 20.5 million euros, approximately 6.6 million euros, which is accounted for by the regulatory effect. These savings will reproduce and accumulate annually over time. The results also show that, as a result of the intense negotiations, academic staff based at faculties engaged in the merger process may have taken more days of sick leave than academics from unmerged faculties in 2017, although the increase is not significant at standard levels.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"101 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust optimization model for relief supplies distribution considering fairness 考虑公平性的救灾物资分配鲁棒优化模型

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-28 DOI: 10.1111/itor.13486

Yingzhen Chen

{"title":"Robust optimization model for relief supplies distribution considering fairness","authors":"Yingzhen Chen","doi":"10.1111/itor.13486","DOIUrl":"https://doi.org/10.1111/itor.13486","url":null,"abstract":"The emergency management agency (EMA) needs to distribute limited relief supplies efficiently. However, it is difficult to develop a reliable system for relief supplies distribution owing to the uncertainties in emergencies. This paper investigates a robust multiperiod relief supplies distribution problem that considers the uncertainties of transportation time, the amount of donation amount, and the secondary disasters. First, a satisfaction model is constructed by considering the relief supplies and the transportation time. The negative effect of the delay in transportation time is considered in the satisfaction model. Second, based on the satisfaction model, a comprehensive fairness strategy is constructed that considers both vertical fairness and horizontal fairness. Finally, a relief supplies distribution model is built for the EMA that considers the actions of the non‐governmental organization (NGO) and donors. Both the utility and the fairness are considered in the objective of the proposed model. In numerical experiments, the Wenchuan earthquake is conducted to illustrate the applicability of the model and provide implications for decision‐makers. The results show the benefits of considering both vertical fairness and horizontal fairness. Then the suitable threshold is given by the analysis of the time delay. Finally, managerial insights and recommendations for the EMA and the NGO derived from the numerical experiments are presented. The findings in this paper help improve the reliability of the relief supplies distribution system.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"77 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141189374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A tutorial on solving single‐leader‐multi‐follower problems using SOS1 reformulations 使用 SOS1 重构法解决单领导多追随者问题教程

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-26 DOI: 10.1111/itor.13466

Didier Aussel, Cécile Egea, Martin Schmidt

{"title":"A tutorial on solving single‐leader‐multi‐follower problems using SOS1 reformulations","authors":"Didier Aussel, Cécile Egea, Martin Schmidt","doi":"10.1111/itor.13466","DOIUrl":"https://doi.org/10.1111/itor.13466","url":null,"abstract":"In this tutorial, we consider single‐leader‐multi‐follower games in which the models of the lower‐level players have polyhedral feasible sets and convex objective functions. This situation allows for classic Karush–Kuhn–Tucker reformulations of the separate lower‐level problems, which lead to challenging single‐level reformulations of Mathematical Programing with Complementarity Constraints (MPCC) type. The main contribution of this tutorial is to present a ready‐to‐use reformulation of this MPCC using special‐ordered‐sets of type 1 (SOS1) conditions. These conditions are readily available in all modern mixed‐integer linear optimization solvers that solve the single‐leader‐multi‐follower problem to optimality. After formally stating the problem class under consideration as well as deriving its reformulations, we present explicit Python code that shows how these techniques can be realized using the solver Gurobi. Finally, we also show the effect of the SOS1‐based reformulation using the real‐world example of industrial eco‐park modeling.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"45 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141146864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Blockchain adoption strategy in a platform dual-channel supply chain with risk-averse sellers 在有风险规避型卖家的平台双渠道供应链中采用区块链的策略

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-21 DOI: 10.1111/itor.13474

Huimin Zhang, Zhenkai Lou, Fujun Hou, Yan Yan

{"title":"Blockchain adoption strategy in a platform dual-channel supply chain with risk-averse sellers","authors":"Huimin Zhang, Zhenkai Lou, Fujun Hou, Yan Yan","doi":"10.1111/itor.13474","DOIUrl":"10.1111/itor.13474","url":null,"abstract":"This paper investigates blockchain technology (BT) adoption strategy in a platform dual-channel supply chain, wherein the supplier establishes a direct selling channel (DC) in addition to the existing reselling channel (RC) of the e-retailer. Both the supplier and the e-retailer are risk-averse, and they have access to consumers through a common online platform. The online platform possesses the capability to introduce BT and can opt to introduce it to neither, one (DC or RC) or both channels. Game models for the four strategies are developed, and the corresponding equilibrium outcomes are obtained using backward induction. Our analysis reveals that when competition intensity is high and both perceived risk aversion level and BT's unit cost are low, the online platform prefers only DC with adopting BT. Otherwise, it prefers both channels with adopting BT. The supplier shares the same preference as the online platform for BT adoption strategy. Interestingly, the e-retailer prefers only DC with adopting BT only when BT's unit cost is high; otherwise, she prefers solely RC with adopting BT. Furthermore, we enhance the basic model by modifying parameter configurations and the sequence game, and verify that our main findings in these extensions remain robust.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"31 6","pages":"4199-4228"},"PeriodicalIF":3.1,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141116564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal emergency hospitals construction in an unexpected epidemic with considering the interactive effect 突发疫情中考虑互动效应的最佳急救医院建设

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-18 DOI: 10.1111/itor.13473

Ming Liu, Xiaoxiao Zhu

{"title":"Optimal emergency hospitals construction in an unexpected epidemic with considering the interactive effect","authors":"Ming Liu, Xiaoxiao Zhu","doi":"10.1111/itor.13473","DOIUrl":"https://doi.org/10.1111/itor.13473","url":null,"abstract":"Constructing emergency hospitals is one of the most critical measures to defeat an unexpected epidemic. However, existing operations research (OR) studies rarely consider the interactive effect between the construction of emergency hospitals and the dynamics of epidemic transmission. Inspired by this gap, we propose a new modeling framework for decision‐making in emergency hospital construction. In our optimization model, we address the pandemic evolution functions as constraints. We also consider the heterogeneity among infected individuals, distinguishing between those with mild and severe symptoms, each requiring treatment in different types of emergency hospitals. We formulate the problem as a mixed integer nonlinear programming model. Our model can envision the current and future evolution of the epidemic and the impact of different decisions regarding emergency hospital construction on epidemic development. Simultaneously, it provides the optimal strategy to build hospitals and minimize the total number of untreated patients due to the disease. The proposed model is tested using the Covid‐19 outbreak case in Wuhan. The results can provide precise guidelines for emergency hospitals construction, including timing and capacity, and offer decision boundaries for policymakers considering the uncertainty of disease transmission. Furthermore, our decision‐making framework is general and can be adapted to study other epidemics.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"2011 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141063134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A probabilistic bi-objective model for a humanitarian location-routing problem under uncertain demand and road closure 不确定需求和道路封闭条件下的人道救援选址问题概率双目标模型

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-16 DOI: 10.1111/itor.13475

Sedanur Temiz, Hande Cansın Kazanç, Mehmet Soysal, Mustafa Çimen

{"title":"A probabilistic bi-objective model for a humanitarian location-routing problem under uncertain demand and road closure","authors":"Sedanur Temiz, Hande Cansın Kazanç, Mehmet Soysal, Mustafa Çimen","doi":"10.1111/itor.13475","DOIUrl":"10.1111/itor.13475","url":null,"abstract":"Effective planning and execution of humanitarian aid logistics activities ensure that disaster-related losses are minimized. This study addresses a tactical-level pre-disaster humanitarian logistics problem where a decision-maker decides on cross-dock locations by taking potential vehicle routes into account. A decision support model is proposed for the location selection and distribution operations in humanitarian logistics with explicit fuel consumption estimation. In the addressed problem, the demand amount of each node depends on probabilistic disaster scenarios. Probabilities of whether each arc/road is open or closed and heterogeneous vehicle fleet in terms of vehicle sizes are also respected. The model is formulated as probabilistic bi-objective mixed integer linear programming, whose objectives are minimization of the total cost (i.e., fuel cost, vehicle fixed cost, and fixed opening cost) and total travel time. To the best of our knowledge, the proposed decision support model is unique in terms of the features considered simultaneously. The applicability of the model is demonstrated by the case study and subsequent numerical analyses of a possible earthquake in the Kartal district of Istanbul. The proposed model is shown to have the potential to support decision-makers in preparation for a disaster. A solution approach based on a clustering algorithm has been also proposed to solve larger instances of the problem. The effectiveness of this heuristic has been demonstrated through its application to larger-scale problems.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 2","pages":"590-625"},"PeriodicalIF":3.1,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13475","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140971521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drone scheduling in a hexagon‐based delivery network with multiple fulfillment centers 在具有多个配送中心的六边形配送网络中进行无人机调度

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-05-13 DOI: 10.1111/itor.13476

Chuang Liu, Huaping Chen, Xueping Li, Shengchao Zhou, Zhaohong Jia

{"title":"Drone scheduling in a hexagon‐based delivery network with multiple fulfillment centers","authors":"Chuang Liu, Huaping Chen, Xueping Li, Shengchao Zhou, Zhaohong Jia","doi":"10.1111/itor.13476","DOIUrl":"https://doi.org/10.1111/itor.13476","url":null,"abstract":"As an emerging technology, drones have great potential in small parcel delivery, reducing operational costs, and improving efficiency. However, battery technologies restrict the endurance of drones. Inspired by the cellular networks used in mobile communications, a hexagon‐based delivery network (HBDN) is proposed to overcome such restrictions. Battery‐swapping stations are incorporated into the HBDN to expand the delivery service range of drones. Based on the proposed HBDN, the multidrone scheduling problem in multiple fulfillment centers (FCs) is addressed. The objective is to minimize the makespan. A mixed‐integer programming model is constructed for the problem. A memetic algorithm with hill climbing (MAHC) is developed to address the problem. A strategy is proposed to prevent inbreeding in the crossover procedure. A local search based on hill climbing is combined with the mutation operation. A lower bound of the problem is proposed to measure the performance of MAHC. Furthermore, load balancing and nearest‐priority strategies are proposed to select FCs. Comparative experiments show that MAHC performs competitively in terms of running time and solution quality.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"11 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140925317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0