International Transactions in Operational Research最新文献_第8页

Optimizing extracurricular activities assignment and related logistical deployment cost between collaborating schools 优化合作学校之间的课外活动分配和相关后勤部署成本

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-23 DOI: 10.1111/itor.13458

Manuel Mateo-Doll, El-Houssaine Aghezzaf

{"title":"Optimizing extracurricular activities assignment and related logistical deployment cost between collaborating schools","authors":"Manuel Mateo-Doll, El-Houssaine Aghezzaf","doi":"10.1111/itor.13458","DOIUrl":"10.1111/itor.13458","url":null,"abstract":"In contemporary urban societies, where both parents are working full-time, a significant number of schoolchildren engage in extra-curricular activities after school. These activities can be organized by the school itself and take place in the school. However, sometimes few schoolchildren are interested in an activity organized by the school, or the schoolchildren's preferences do not match the school's offering at all, while on other occasions the school has limited availability for a popular activity. To expand the number of activities offered to their schoolchildren, some schools form a collaborating network, sharing their extracurricular activities and making them accessible to all schoolchildren. Thus, schoolchildren from any school may attend activities organized by other schools in the network. In this case, however, transport of the children between schools must also be organized. This problem can be framed as a school bus routing problem with some special features. A mixed-integer linear optimization model is proposed for the integrated assignment of extracurricular activities and cost-effective vehicle routing. The objective of the model is to minimize unmet demand for extracurricular activities while taking into account the constraints related to the facilities and transport. This model has been tested on a set of instances to analyze its performance, with the goal of deploying it for the projected levels of demand in a city of about 100,000 inhabitants. The results are compared with the current situation and the clustering of the set of schools.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 2","pages":"745-768"},"PeriodicalIF":3.1,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13458","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140210932","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

Optimal production and carbon reduction investment decision for manufacturers with leasing–selling strategies considering financing 考虑融资的租赁销售策略下制造商的最佳生产和碳减排投资决策

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-16 DOI: 10.1111/itor.13453

Biyu Liu, Yaling Shi, Haidong Yang

引用次数: 0

Dynamic competition and market structure for platform-based products: roles of product quality and indirect network effect 平台型产品的动态竞争和市场结构：产品质量和间接网络效应的作用

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-11 DOI: 10.1111/itor.13450

Guowei Dou, Kun Wei, Lijun Ma, Xudong Lin

{"title":"Dynamic competition and market structure for platform-based products: roles of product quality and indirect network effect","authors":"Guowei Dou, Kun Wei, Lijun Ma, Xudong Lin","doi":"10.1111/itor.13450","DOIUrl":"10.1111/itor.13450","url":null,"abstract":"We consider dynamic competition between two platform-based products that exhibit two-sided network effects, such as game consoles and intelligent hardware. Firms compete in terms of pricing and Research & Development investment, which are driven by consumers’ marginal utility of quality, indirect network effects, and the differentiation between consumers’ preference for the products. We find that with a small marginal utility of consumers, the equilibrium investment of one firm increases first and decreases later with its product quality but is not obviously sensitive to the rival's. In contrast, with a large marginal utility, if the quality of the two products is comparable, the equilibrium investment increases substantially. However, if one product pulls ahead, the other firm will stop investing. Besides, we find that when the intrinsic value and the network value coexist, the market becomes more concentrated, even when consumers’ marginal utility is small. The market concentration increases in both the consumers’ marginal utility and the indirect network effect but decreases in the degree of differentiation between consumers’ preference toward the two products. Interestingly, we show that differentiation plays an important role in shaping the market structure only when the network effect is weak. Counterintuitively, we show that the differentiation corrodes firms’ total profits, which demonstrates that less fierce competition resulting from low substitution leads to a lower profit. Additionally, we reveal that dynamic interaction between quality and installed base motivates firms to improve from a low quality, the first-mover advantage does not ensure market dominance.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"31 5","pages":"3245-3279"},"PeriodicalIF":3.1,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140146967","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 “Multiple criteria decision making for sustainable development goals (SDGs)” 关于 "可持续发展目标（SDGs）的多重标准决策 "的特刊

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-10 DOI: 10.1111/itor.13439

Davide La Torre, Hatem Masri, Constantin Zopounidis

引用次数: 0

Special issue on “Managing supply chain resilience in the digital economy era” 数字经济时代的供应链复原力管理 "特刊

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-10 DOI: 10.1111/itor.13445

引用次数: 0

IFORS' Operational Research Hall of Fame: Clóvis Caesar Gonzaga 国际运筹学联合会运筹学名人堂：Clóvis Caesar Gonzaga

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-10 DOI: 10.1111/itor.13432

Celina de Figueiredo, Elizabeth W. Karas, Claudia Sagastizábal

引用次数: 0

A multi-objective transportation model for COVID-19 patients: lesson learned from France COVID-19 病人的多目标运输模型：法国的经验教训

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-08 DOI: 10.1111/itor.13447

Houda Alaya, Haifa Jammeli, Fouad Ben Abdelaziz, Meryem Masmoudi, Jerome Verny

引用次数: 0

Information and selling mode strategies in a supply chain with an outsourced private label product 外包自有品牌产品供应链中的信息和销售模式战略

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-08 DOI: 10.1111/itor.13448

Fa Wang, Jing Chen, Hui Yang, Fei Sun

{"title":"Information and selling mode strategies in a supply chain with an outsourced private label product","authors":"Fa Wang, Jing Chen, Hui Yang, Fei Sun","doi":"10.1111/itor.13448","DOIUrl":"10.1111/itor.13448","url":null,"abstract":"This paper examines the interplay between the information strategy of an e-commerce platform and the selling mode strategy of a manufacturer within a co-opetitive supply chain, as well as the identification of the optimal supply chain strategy. We develop a supply chain model where a platform outsources production of its private label product to a manufacturer, who also sells its national brand product through the platform. The platform must decide whether to acquire consumer quality preference information at a cost and share it with the manufacturer, while the manufacturer needs to choose between the reselling mode or the agency selling mode for its national brand product. The two driving effects (competition-intensification effect and mode differentiation effect) are identified. Our findings show that the platform will acquire and share information when the acquisition cost is sufficiently low, leading to the “competition-intensification effect.” Additionally, the manufacturer prefers the agency selling mode when cost-quality efficiency is low, and the reselling mode otherwise, driven by the “mode differentiation effect.” In cases where information sharing is absent, the manufacturer is more likely to choose the agency selling mode. Interestingly, when the cost-quality efficiency of the manufacturer's product is moderate and the information acquisition cost is low, the “competition-intensification effect” and the “mode differentiation effect” offset each other, resulting in the expansion of the region where the manufacturer chooses the reselling mode due to the platform's information-sharing strategy. As a result, this enhances a cooperative relationship between the manufacturer and the platform. We also derive the optimal supply chain strategy, providing insights into both the manufacturer's selling mode and the platform's information strategies in online retailing.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"31 5","pages":"3280-3317"},"PeriodicalIF":3.1,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070715","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 practical approach for dealing with hard knapsack problems using general‐purpose integer programming software 使用通用整数编程软件处理难题的实用方法

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-03-01 DOI: 10.1111/itor.13449

Myung Soon Song, Pei Hua Lin, Yun Lu, Emre Shively‐Ertas, Francis J. Vasko

{"title":"A practical approach for dealing with hard knapsack problems using general‐purpose integer programming software","authors":"Myung Soon Song, Pei Hua Lin, Yun Lu, Emre Shively‐Ertas, Francis J. Vasko","doi":"10.1111/itor.13449","DOIUrl":"https://doi.org/10.1111/itor.13449","url":null,"abstract":"Several articles dealing with the generation of hard 0‐1 knapsack problems (KPs) have given rise to 13,940 KP instances being made available for empirical testing. These KPs are typically solved using algorithms specifically designed to solve hard KPs. The goal of this paper is to demonstrate that two general‐purpose integer programming software packages using default parameter settings and a standard PC can successfully be used to generate optimal or guaranteed near‐optimal solutions for these 13,940 KP instances. Over 97% of the 13,940 instances have solutions generated that are guaranteed to be within 0.01% of optimum in less than 1 minute and a practical strategy for dealing with the other 3% is presented. Additionally, 3240 of the most difficult KPs were generated based on 6 parameters. Statistical analyses for predicting which values for these six parameters result in difficult‐to‐solve KPs based on the software used will be discussed. These results will be of particular interest to operations research practitioners who need to efficiently solve hard KPs related to real‐world applications.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"18 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025246","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 heuristic for the non-unicost set covering problem using local branching 利用局部分支的非单成本集合覆盖问题启发式

IF 3.1 4区管理学

International Transactions in Operational Research Pub Date : 2024-02-27 DOI: 10.1111/itor.13446

J.E. Beasley

引用次数: 0