International Transactions in Operational Research最新文献

{"title":"A multi‐objective sustainable closed‐loop supply chain network problem with hybrid facilities","authors":"Joel‐Novi Rodríguez‐Escoto, Elias Olivares‐Benitez, Samuel Nucamendi‐Guillén, Julie Drzymalski","doi":"10.1111/itor.13523","DOIUrl":"https://doi.org/10.1111/itor.13523","url":null,"abstract":"A sustainable closed‐loop supply chain network requires conjunctive implementation of reverse logistics in the supply chain, with decisions that consider economic, environmental, and social factors. In real life, the problem needs to be addressed by prioritizing targets or interacting between them to give a range of solutions to the decision maker. In this context, this work proposes a novel multi‐objective sustainable closed‐loop supply chain network problem based on the revised network design model with hybrid recovery centers minimizing (1) the total economic cost, (2) the CO<jats:sub>2</jats:sub> emission of vehicles used, and (3) the total obnoxious distance. The latter objective is a novel implementation of the social dimension of a sustainable model. A sensitivity analysis of the multi‐objective model is developed through ANOVA. A dataset of instances was generated to test the model and the solution methods, which are configured with AUGMECON2, a linear programming relaxation implemented to improve the CPU time, and AUGMECON2‐EXTENDED to obtain more solutions to avoid exploring all space of the solution. The results show that an AUGMECON2‐EXTENDED implementation outperforms all the selected performance metrics. These performance metrics include NPS, CPU time, RPOS, QM, and HV. The results show an improvement on average of at least , , , , and , respectively, in those metrics, in comparison to other implementations.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"41 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141936176","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}

{"title":"Unlocking university efficiency: a Bayesian stochastic frontier analysis","authors":"Zaira García-Tórtola,&nbsp;David Conesa,&nbsp;Joan Crespo,&nbsp;Emili Tortosa-Ausina","doi":"10.1111/itor.13525","DOIUrl":"10.1111/itor.13525","url":null,"abstract":"<p>In this paper, we analyze the performance of the Spanish public university system over the 2010–2019 period, which was particularly turbulent due to the tight budget constraints imposed on universities. To disentangle the main sources of performance change, we adopt a dynamic approach by decomposing it into efficiency change (catching up) and technical change (shifts in the frontier). In contrast to many studies on higher education institutions (HEIs), we opt for stochastic frontier analysis, employing the ray production function proposed by Löthgren (1997) to account for the multiple-output nature of HEIs. Additionally, to offer a more detailed examination of uncertainty quantification, we conduct inference within the Bayesian paradigm. Broadly, results point to an overall positive performance change over the entire period, particularly for technical change during 2010–2014. However, there were notable discrepancies across universities, which could be unlocked with certain precision via the posterior distributions of performance and its components.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 5","pages":"2620-2644"},"PeriodicalIF":3.1,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13525","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141936178","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}

{"title":"Conversational and generative artificial intelligence and human–chatbot interaction in education and research","authors":"Ikpe Justice Akpan,&nbsp;Yawo M. Kobara,&nbsp;Josiah Owolabi,&nbsp;Asuama A. Akpan,&nbsp;Onyebuchi Felix Offodile","doi":"10.1111/itor.13522","DOIUrl":"10.1111/itor.13522","url":null,"abstract":"<p>Artificial intelligence (AI) as a disruptive technology is not new. However, its recent evolution, engineered by technological transformation, big data analytics, and quantum computing, produces conversational and generative AI (CGAI/GenAI) and human-like chatbots that disrupt conventional operations and methods in different fields. This study investigates the scientific landscape of CGAI and human–chatbot interaction/collaboration and evaluates use cases, benefits, challenges, and policy implications for multidisciplinary education and allied industry operations. The publications trend showed that just 4% (<i>n</i> = 75) occurred during 2006–2018, while 2019–2023 experienced astronomical growth (<i>n</i> = 1763 or 96%). The prominent use cases of CGAI (e.g., ChatGPT) for teaching, learning, and research activities occurred in computer science (multidisciplinary and AI; 32%), medical/healthcare (17%), engineering (7%), and business fields (6%). The intellectual structure shows strong collaboration among eminent multidisciplinary sources in business, information systems, and other areas. The thematic structure highlights prominent CGAI use cases, including improved user experience in human–computer interaction, computer programs/code generation, and systems creation. Widespread CGAI usefulness for teachers, researchers, and learners includes syllabi/course content generation, testing aids, and academic writing. The concerns about abuse and misuse (plagiarism, academic integrity, privacy violations) and issues about misinformation, danger of self-diagnoses, and patient privacy in medical/healthcare applications are prominent. Formulating strategies and policies to address potential CGAI challenges in teaching/learning and practice are priorities. Developing discipline-based automatic detection of GenAI contents to check abuse is proposed. In operational/operations research areas, proper CGAI/GenAI integration with modeling and decision support systems requires further studies.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1251-1281"},"PeriodicalIF":3.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863720","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}

{"title":"Inventory rationing, admission control, and production capacity allocation in a make-to-stock/make-to-order manufacturing system","authors":"Eungab Kim","doi":"10.1111/itor.13521","DOIUrl":"10.1111/itor.13521","url":null,"abstract":"<p>This paper considers a manufacturing system in which products are produced in both make-to-stock (MTS) and make-to-order (MTO) modes. Production of MTS and MTO products is done in batches, incurs a setup cost, and is non-preemptive. The inventory of MTS products fulfills the demand of multiple classes, and each class demand can be satisfied or rejected. Customer orders for MTO production can be accepted or rejected, and their size is the same as the production batch. The primary goal of this paper is to study a policy that coordinates inventory rationing, admission control, and production capacity allocation to maximize the system's profit. We formulate the problem as a Markov decision process model and identify the structure of optimal control policies. We investigate the effect of inventory rationing on the profit by comparing its performance to that of the system with a first-come- first-serve policy to allocate inventory to multiple demand classes and study the extent to which the benefit of inventory rationing can be affected by system parameter changes. We also propose a heuristic that manages control decisions from linear threshold functions. Our test results from numerical examples show that the average percentage difference between the optimal and heuristic policies is within 1.2%.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1593-1619"},"PeriodicalIF":3.1,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863722","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}

{"title":"Adaptive feasible and infeasible evolutionary search for the knapsack problem with forfeits","authors":"Qing Zhou,&nbsp;Jin-Kao Hao,&nbsp;Zhong-Zhong Jiang,&nbsp;Qinghua Wu","doi":"10.1111/itor.13512","DOIUrl":"10.1111/itor.13512","url":null,"abstract":"<p>The knapsack problem (KP) with forfeits is a generalized KP that aims to select some items, among a set of candidate items, to maximize a profit function without exceeding the knapsack capacity. Moreover, a forfeit cost is incurred and deducted from the profit function when both incompatible items are placed in the knapsack. This problem is a relevant model for a number of applications and is however computationally challenging. We present a hybrid heuristic method for tackling this problem that combines the evolutionary search with adaptive feasible and infeasible search to find high-quality solutions. A streamlining technique is designed to accelerate the evaluation of candidate solutions, which increases significantly the computational efficiency of the algorithm. We assess the algorithm on 120 test instances and demonstrate its dominance over the best performing approaches in the literature. Particularly, we show 94 improved lower bounds. We investigate the essential algorithmic components to understand their roles.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1442-1471"},"PeriodicalIF":3.1,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776974","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}

{"title":"Two-stage pricing of products and services considering different competitive environments","authors":"Wei Qi,&nbsp;Ziwei Li,&nbsp;Xuwang Liu","doi":"10.1111/itor.13520","DOIUrl":"10.1111/itor.13520","url":null,"abstract":"<p>Designing a product line that considers value-added services (VASs) is a strategic move for enterprises with diversified customer needs. Additionally, a dynamic pricing strategy that can respond to changes in the external environment is crucial for enterprises. This study investigates product and VAS price adjustments for enterprises in monopolistic and oligopolistic competitive environments, respectively, based on the multinomial logit model. A two-stage pricing model is developed for products and services to obtain the optimal pricing strategy. The findings reveal that customers’ strategic behaviors significantly impact on enterprises’ pricing decisions. When adjusting prices, enterprises need to consider the strategic behaviors of customers to ensure the rationality of pricing. Furthermore, irrespective of the competitive environment faced by enterprises, there is a need to emphasize the importance of dynamic pricing. Making appropriate adjustments to prices in the second stage can, overall, enhance the profitability of the enterprise.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1641-1676"},"PeriodicalIF":3.1,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776975","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}

{"title":"Sequencing situations with position-dependent effects under cooperation","authors":"A. Saavedra-Nieves,&nbsp;M. A. Mosquera,&nbsp;M. G. Fiestras-Janeiro","doi":"10.1111/itor.13518","DOIUrl":"10.1111/itor.13518","url":null,"abstract":"<p>This paper innovatively addresses the effect of cooperation on sequencing situations with position-dependent effects. Specifically, we ensure the convexity of the associated sequencing games under the fulfillment of certain conditions related to the neighbor switching gains. Additionally, we propose two families of allocation rules based on sharing the neighbor switching gains under two distinct procedures, each providing a path from the initial order to an optimal order. From a theoretical point of view, an axiomatization of both families of allocations is provided, and their stability is also ensured under the conditions related to convexity.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1620-1640"},"PeriodicalIF":3.1,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/itor.13518","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776978","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}

{"title":"The quality admission and price decisions of production capacity on the third‐party platform for shared manufacturing","authors":"Wenbo Li, Bin Dan, Xumei Zhang, Ting Lei, Shengming Zhang","doi":"10.1111/itor.13517","DOIUrl":"https://doi.org/10.1111/itor.13517","url":null,"abstract":"Many third‐party platforms for shared manufacturing (platforms) have developed rapidly in recent years. The quality admission and pricing of production capacity are crucial issues for these platforms. This paper focuses on the platform supply chain composed of a platform, multiple manufacturers with surplus production capacity (sharers), and multiple manufacturers with insufficient production capacity (renters). Considering the impact of the production capacity quality on the shared scale and rental demand of production capacity, this paper constructs a game model for the platform supply chain under different quality admission scenarios, investigates the quality admission and price decisions of production capacity on the platform, and analyses the impact of the quality admission on the sharers’ and renters’ profits. The results show that the platform sets the quality admission when the sharers’ production capacity scale is small and the platform regulatory cost is low. The platform always increases its service price but may reduce the rental price of production capacity under the quality admission scenario. When the sharers’ production capacity scale is large, the platform lowers the threshold of quality admission with the quality elasticity of production capacity increasing. In addition, when the quality elasticity of production capacity and platform regulatory cost are low, and the sharers’ production capacity scale is small, the quality admission of the platform realizes the win–win–win situation for the platform, renters, and sharers.","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"16 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776882","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}

{"title":"Hierarchical goal programming approaches to solve a discrete-time formulation for the aircraft recovery problem of a Brazilian oil and gas company","authors":"Tarley Mansur Fantazzini,&nbsp;Thiago Vieira,&nbsp;Reinaldo Morabito,&nbsp;Pedro Munari","doi":"10.1111/itor.13516","DOIUrl":"10.1111/itor.13516","url":null,"abstract":"<p>We address the aircraft recovery problem faced by a Brazilian oil and gas company during its offshore operations. This problem involves hiring helicopters from an outsourced company to transport personnel from an airport to maritime units. The performed flights are subject to disruptions and might require rescheduling. To assist with decision-making in such situations, we introduce a discrete-time integer linear programming (ILP) model that considers company-specific attributes, including a lexicographic objective function that prioritizes (i) the reduction of flight transfers to the next day; (ii) the reduction of helicopter utilization; and (iii) the reduction of flight delays of the day. We develop four different solution approaches using hierarchical goal programming based on the proposed model, aided by enhancements and valid inequalities. Computational experiments using both real-world and simulated instances demonstrate that our approaches can provide effective solutions for most instances using a general-purpose ILP solver within acceptable computation times.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 3","pages":"1343-1374"},"PeriodicalIF":3.1,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745883","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}

{"title":"Design of survivable networks with low connectivity requirements","authors":"Fatmah Almathkour,&nbsp;Youcef Magnouche,&nbsp;A. Ridha Mahjoub,&nbsp;Raouia Taktak","doi":"10.1111/itor.13511","DOIUrl":"10.1111/itor.13511","url":null,"abstract":"<p>In this paper, we consider the survivable network design problem when the connectivity types are in {0, 1, 2, 3}. The problem has wide applications in telecommunication networks. We consider the problem from a polyhedral point of view. We describe several classes of valid inequalities and give necessary conditions and sufficient conditions for these inequalities to be facet defining. We also develop separation routines for these inequalities. Using these results, we devise a branch-and-cut algorithm along with an extensive computational study is presented.</p>","PeriodicalId":49176,"journal":{"name":"International Transactions in Operational Research","volume":"32 2","pages":"918-960"},"PeriodicalIF":3.1,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739978","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}