International Transactions in Operational Research最新文献

Special Issue on “Cutting and Packing” “裁切及包装”特刊

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-10-01 DOI: 10.1111/itor.70093

引用次数: 0

Special Issue on “Decision Support System Technology in the Artificial Intelligence Era” 《人工智能时代的决策支持系统技术》特刊

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-10-01 DOI: 10.1111/itor.70094

引用次数: 0

Purchase and production optimization in a meat processing plant 肉类加工厂的采购和生产优化

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-08-27 DOI: 10.1111/itor.70081

Marek Vlk, Přemysl Šůcha, Jarosław Rudy, Radosław Idzikowski

{"title":"Purchase and production optimization in a meat processing plant","authors":"Marek Vlk, Přemysl Šůcha, Jarosław Rudy, Radosław Idzikowski","doi":"10.1111/itor.70081","DOIUrl":"https://doi.org/10.1111/itor.70081","url":null,"abstract":"This paper addresses an optimization problem concerning the purchase and subsequent material processing in a meat processing company. Unlike the majority of existing papers, we do not concentrate on how this problem concerns supply chain management, but we focus on the production stage, primarily the meat cutting. Specifically, we study the operational level of production management, where the company responds to fluctuations in demand and controls the flow of materials, as this level of management significantly affects its profit. The problem involves the concept of alternative ways of material processing, stock of material with different expiration dates, and extra constraints widely neglected in the current literature addressing meat cutting and processing, namely, the minimum order quantity and the minimum percentage in alternatives. We prove that each of these two constraints makes the problem <math>\u0000 <semantics>\u0000 <mi>NP</mi>\u0000 <annotation>$mathcal {NP}$</annotation>\u0000 </semantics></math>-hard, and we design an exact iterative approach based on integer linear programming that allows us to solve real-life instances even using an open-source integer linear programming solver. Another advantage of this approach is that it mitigates numerical issues, caused by the extensive range of data values, we experienced with a commercial solver. The results obtained using real data from the meat processing company showed that our algorithm can find the optimum solution in a few seconds for all considered use cases.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"33 2","pages":"1016-1051"},"PeriodicalIF":2.9,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.70081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197191","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

Optimizing plastic product manufacturing scheduling: an integrated approach to minimize setup costs and tardiness with preventive maintenance considerations 优化塑料产品制造计划：一个集成的方法，以尽量减少安装成本和延迟与预防性维护的考虑

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-08-17 DOI: 10.1111/itor.70085

Zhaohui Li, Chuang Zhang, Tianhong Wu, Shanshan Zhou, Yantong Li

{"title":"Optimizing plastic product manufacturing scheduling: an integrated approach to minimize setup costs and tardiness with preventive maintenance considerations","authors":"Zhaohui Li, Chuang Zhang, Tianhong Wu, Shanshan Zhou, Yantong Li","doi":"10.1111/itor.70085","DOIUrl":"https://doi.org/10.1111/itor.70085","url":null,"abstract":"In the competitive landscape of plastic product manufacturing, optimizing production scheduling is crucial for enhancing efficiency and reducing costs. This paper presents an integrated approach to address the unrelated parallel machine scheduling problem (UPMSP) with a focus on minimizing setup costs and tardiness penalties, while also considering the necessity of preventive maintenance. We incorporate practical constraints such as release time, machine eligibility, and delivery due dates into our model to ensure its applicability to real-world manufacturing scenarios. We propose a mixed-integer linear programming model designed to minimize the total costs associated with setup and tardiness. To solve this complex problem, we develop a constructive heuristic and an adaptive large neighborhood search (ALNS) algorithm, which introduces novel destroy and repair operators. These algorithms are tailored to the specific structure of the UPMSP and are tested through a case study involving a real plastic product manufacturer. Results from the case study demonstrate that our proposed solution method significantly outperforms the company's current planning approach, achieving a reduction in total costs by 73.11%. Furthermore, the ALNS algorithm's performance is validated through numerical experiments on a range of randomly generated instances, showcasing its ability to provide high-quality solutions within practical computation times.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"33 2","pages":"984-1015"},"PeriodicalIF":2.9,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196874","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

Special Issue on “Decision Support System Technology in the Artificial Intelligence Era” 《人工智能时代的决策支持系统技术》特刊

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-08-01 DOI: 10.1111/itor.70065

引用次数: 0

Special Issue on “Cutting and Packing” “裁切及包装”特刊

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-08-01 DOI: 10.1111/itor.70067

引用次数: 0

The tree-of-hubs location problem with interhub stopovers 枢纽间中途停留的枢纽树定位问题

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-06-29 DOI: 10.1111/itor.70068

Oscar H. Ariztegui-Beltrán, David L. Cortés-Murcia, William Guerrero Rueda, Mehrdad Mohammadi, Olivier Péton

{"title":"The tree-of-hubs location problem with interhub stopovers","authors":"Oscar H. Ariztegui-Beltrán, David L. Cortés-Murcia, William Guerrero Rueda, Mehrdad Mohammadi, Olivier Péton","doi":"10.1111/itor.70068","DOIUrl":"https://doi.org/10.1111/itor.70068","url":null,"abstract":"The tree-of-hubs location problem (THLP) is a variant of the classical hub location problem, in which the set of hubs must be connected in a tree topology. The key decision variables involve the selection of hub locations, the allocation of spokes to hubs, and the design of a tree-structured interhub network. In this paper, we introduce a new extension of the THLP that incorporates stopover nodes—intermediate locations situated along the paths between hubs. The inclusion of stopovers helps reduce transportation costs by minimizing unnecessary back-and-forth trips and limiting transshipments at hubs. However, this benefit comes at the expense of potential detours in the interhub connections. We propose a mixed-integer linear programming (MILP) formulation to model this problem, with an objective function that minimizes the total cost of transporting commodities between multiple origins and destinations. Computational experiments are conducted using adapted instances from the AP-200 dataset. We also perform a sensitivity analysis on the discount factors associated with the use of stopovers. The results show that stopovers can lead to logistics cost savings of up to 15%. In addition, we provide managerial insights and quantify the impact of stopovers on network design costs by comparing solutions with and without their inclusion. Finally, we discuss the conditions under which stopovers can be effectively leveraged in practice.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"33 2","pages":"826-859"},"PeriodicalIF":2.9,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197158","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

An enhanced pricing model for truck transportation: a case study in Swedish forestry 改进的卡车运输定价模式：瑞典林业案例研究

IF 2.9 4区管理学

International Transactions in Operational Research Pub Date : 2025-06-24 DOI: 10.1111/itor.70062

Mikael Rönnqvist, Patrik Flisberg, Gunnar Svenson, Daniel Noreland

{"title":"An enhanced pricing model for truck transportation: a case study in Swedish forestry","authors":"Mikael Rönnqvist, Patrik Flisberg, Gunnar Svenson, Daniel Noreland","doi":"10.1111/itor.70062","DOIUrl":"https://doi.org/10.1111/itor.70062","url":null,"abstract":"Determining freight rates for heavy trucks involves a detailed analysis of multiple cost factors, including time, distance, fuel, and other operational costs, which collectively contribute to the overall compensation for transportation services. However, actual remuneration is based on more simplified agreements. Often, the standard agreement is based on the loaded driving distance. Such agreements provide an accurate description of the average cost over many transports but can be very unfair in compensation on single transports. This paper presents a pricing model for truck transportation that extends traditional models based on distance. The new model includes a measure of cost driving factors along the route, such as hills, road surface, curves, speed limits, intersections, speed changes, long ascents, and other physical difficulties. This measure is extracted from the Calibrated Route Finder, a route selection support system used for roundwood transportation in Sweden. The suggested price model that combines distance and a weighted resistance measure gives a better match between remuneration and full costing of a transport than a model that concentrates only on distance. The suggested model has been tested on a large annual transport data set and detailed and selected transportations evaluated by five large forest companies.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"33 2","pages":"775-797"},"PeriodicalIF":2.9,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.70062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197029","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

Special Issue on “Cutting and Packing” “裁切及包装”特刊

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2025-06-09 DOI: 10.1111/itor.70035

引用次数: 0

Preface to the Special Issue on “Sustainable and Responsive Transportation and Logistics” “可持续及反应迅速的运输及物流”特刊前言

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2025-06-09 DOI: 10.1111/itor.70029

Rosa G. González-Ramírez, Janny Leung, Alena Otto, Erwin Pesch

引用次数: 0