Omega-international Journal of Management Science最新文献_第8页

A novel framework for optimizing job rotation schedules across industries 一个优化跨行业工作轮换时间表的新框架

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-24 DOI: 10.1016/j.omega.2024.103235

Priyank Sinha , Sameer Kumar , Chandra Prakash Garg , Charu Chandra

引用次数: 0

Can feature removal benefit the automotive manufacturers amid supply shortages? An analytical investigation 在供应短缺的情况下，去功能化能否使汽车制造商受益？分析调查

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-22 DOI: 10.1016/j.omega.2024.103227

Lu Wang , Tianhu Deng , Qiaofeng Li

{"title":"Can feature removal benefit the automotive manufacturers amid supply shortages? An analytical investigation","authors":"Lu Wang , Tianhu Deng , Qiaofeng Li","doi":"10.1016/j.omega.2024.103227","DOIUrl":"10.1016/j.omega.2024.103227","url":null,"abstract":"<div><div>The automotive industry has been significantly impacted by the global semiconductor shortage since 2020. Traditional strategies, such as maintaining safety stock and sourcing from backup suppliers, have been proven insufficient in mitigating supply shortages. To address the global chip shortage and build supply chain viability, leading automotive manufacturers worldwide have adopted an innovative adaptation strategy known as the feature removal strategy. This strategy involves temporarily removing non-vital features and retrofitting them once supply shortages are alleviated, thereby mitigating disruptions. Given the increasing frequency, severity, and unpredictability of global chip shortages, it is crucial to investigate the potential benefits of the feature removal strategy for automotive manufacturers. This study aims to address this gap analytically. We develop a stochastic dynamic programming model to optimize pricing and production decisions under the feature removal strategy. We reformulate the model into an equivalent convex problem and propose structural properties to manage the complexity arising from the high dimensionality of state and action spaces. Comparative analyses with benchmark strategies underscore the efficacy of the feature removal strategy in enhancing profitability and sustaining supply chain viability, especially in prolonged supply shortage scenarios.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"132 ","pages":"Article 103227"},"PeriodicalIF":6.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Managing manufacturer encroachment and product conflicts in a closed-loop supply chain: The case of information asymmetry 闭环供应链中制造商侵占与产品冲突的管理：信息不对称的情况

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-22 DOI: 10.1016/j.omega.2024.103236

Senlin Zhao , Mengxiang Wang , Qin Zhou , Xiqiang Xia

{"title":"Managing manufacturer encroachment and product conflicts in a closed-loop supply chain: The case of information asymmetry","authors":"Senlin Zhao , Mengxiang Wang , Qin Zhou , Xiqiang Xia","doi":"10.1016/j.omega.2024.103236","DOIUrl":"10.1016/j.omega.2024.103236","url":null,"abstract":"<div><div>The implementation of direct channels allows manufacturers to distribute new and remanufactured products through separate channels. This prompts manufacturers to carefully consider which products to channel directly. In the remanufacturing process, manufacturers often delegate the collection process to retailers. However, only retailers know their own collection efficiency information, whereas manufacturers can only know its probability distribution. To explore the choice of encroachment channel strategy under information asymmetry, we constructed a dual-channel closed-loop supply chain model, in which the manufacturer can design non-linear contracts to incentivize the retailer to choose contracts that align with its capabilities, ultimately maximizing its profit. We discuss the case of manufacturer dual product encroachment and the impact of consumer channel preferences in the extended model. The findings reveal that, contrary to previous studies, the profits of low-type manufacturers are not always reduced, and the effect of information asymmetry may be opposite. Moreover, information asymmetry can be detrimental to high-type retailers. The optimal channel choice is affected by factors such as remanufacturing cost, consumer channel preference, information asymmetry, and reserved profit differences. Manufacturers and retailers can achieve a win-win situation through new product encroachment, which can also counteract the negative effects of information asymmetry and enhance consumer surplus.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"132 ","pages":"Article 103236"},"PeriodicalIF":6.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Closed-loop supply chain design considering quantity-dependent price and decentralized local waste management 考虑数量依赖价格和分散本地废物管理的闭环供应链设计

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-20 DOI: 10.1016/j.omega.2024.103232

Jun Seop Lee, Byung Do Chung

引用次数: 0

The inoculation dilemma: Partial vs Full immunization during the early rollout in a pandemic 接种困境：大流行早期部分免疫与全面免疫

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-19 DOI: 10.1016/j.omega.2024.103230

Rajdeep Singh , Stefan Wrzaczek , Michael Freiberger

{"title":"The inoculation dilemma: Partial vs Full immunization during the early rollout in a pandemic","authors":"Rajdeep Singh , Stefan Wrzaczek , Michael Freiberger","doi":"10.1016/j.omega.2024.103230","DOIUrl":"10.1016/j.omega.2024.103230","url":null,"abstract":"<div><div>COVID-19 demonstrated the extent to which a pandemic can affect billions of lives worldwide. Vaccinations are an effective intervention that reduces the burden of the disease on the population. However, the low availability of vaccine doses coupled with an emerging infection wave calls for efficient dose allocation. We study the tradeoffs between prioritization of partial or full immunization while allocating limited doses with the help of an augmented SIR model. We define the term allocation ratio as the ratio of doses allocated for partial immunization as a proportion of the total available doses. Optimal control theory is used to derive the path traversed by the allocation ratio throughout the vaccine administration program. Numerical insights are obtained by introducing the case study of the Indian state of Tamil Nadu. Results indicate a preference towards full immunization when the active infections are low, while a switch to exclusive partial immunization is observed as the infection wave grows. Sensitivity analysis shows that factors like reduced vaccine availability, higher transmission rate, and high first-dose efficacy promote a quicker switch. The results also indicate significant potential savings of around ₹710 billion (<span><math><mo>∼</mo></math></span> $8.46 billion) in mortality losses compared to the more widely followed pro-rata allocation policies. Hence, our study contributes to the growing discussion around the optimal strategy for vaccine administration with a focus on dose prioritization. The results of our research can help policymakers determine the allocation of limited available doses when faced with rising infection numbers during future pandemics.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"132 ","pages":"Article 103230"},"PeriodicalIF":6.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pre-occurrence location-allocation-configuration of maritime emergency resources considering shipborne unmanned aerial vehicle (UAV) 考虑到舰载无人飞行器（UAV），海上应急资源的事前定位-分配-配置

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-16 DOI: 10.1016/j.omega.2024.103231

Yuzhen Hu , Min Wang , Xinghai Guo , Valery F. Lukinykh

{"title":"Pre-occurrence location-allocation-configuration of maritime emergency resources considering shipborne unmanned aerial vehicle (UAV)","authors":"Yuzhen Hu , Min Wang , Xinghai Guo , Valery F. Lukinykh","doi":"10.1016/j.omega.2024.103231","DOIUrl":"10.1016/j.omega.2024.103231","url":null,"abstract":"<div><div>Demand for maritime transportation has constantly increased throughout recent years due to its high capacity, extensive coverage, high safety, and so on. However, the growth has also contributed to a rise in maritime accidents, highlighting the need for developing maritime emergency management strategies. In maritime emergency management, resource location-allocation-configuration is the most important and inseparable preparedness action before disasters, directly deciding the quality of emergency rescue operations. Traditional ship-only rescue is frequently both cost-intensive and time-consuming, seriously affecting rescue performance. This study introduces an innovative shipborne UAV operation system to address these limitations. Firstly, a multi-objective mixed-integer nonlinear programming model is established to minimize total rescue time and cost by considering the uncertain maritime environment, continuous docking placements of ships, UAV flight distance, rescue station capacity, etc. Secondly, to efficiently obtain an execution plan, a two-stage algorithm is proposed to facilitate our mission optimization model. Large-scale simulated instances and a real case study demonstrate that (i) the proposed algorithm can solve the model efficiently. (ii) the application of shipborne UAV operation system in maritime emergencies shows a significant improvement in time and cost compared to ship-only system. (iii) it is necessary to consider the uncertain maritime environment when solving emergency management problems. Moreover, extensive parameter sensitivity analysis provides managerial insights into the impact of various factors on the optimization outcomes. We also explore deeper insights that may benefit maritime administration's decision support.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"131 ","pages":"Article 103231"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Half a century of Omega – The International Journal of Management Science: A bibliometric analysis 半个世纪的欧米茄——国际管理科学杂志：文献计量学分析

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-13 DOI: 10.1016/j.omega.2024.103226

Walayat Hussain , José M. Merigó , Iman Rahimi , Benjamin Lev

{"title":"Half a century of Omega – The International Journal of Management Science: A bibliometric analysis","authors":"Walayat Hussain , José M. Merigó , Iman Rahimi , Benjamin Lev","doi":"10.1016/j.omega.2024.103226","DOIUrl":"10.1016/j.omega.2024.103226","url":null,"abstract":"<div><div><em>Omega – The International Journal of Management Science</em> is a leading international journal in management science and operations research. In 2023, <em>Omega</em> celebrated its 50th anniversary. Motivated by this event, this paper provides an in-depth, critical analysis of <em>Omega</em>'s development as a leading academic journal over fifty years. The article visualizes a dynamic and evolving academic landscape through the lens of several bibliometric indicators including bibliographic coupling, keyword co-occurrence, and institutional productivity using the Web of Science Core Collection database. The aim is to identify <em>Omega</em>'s leading trends in highly cited papers, authors, universities, countries, journals, keywords and topics. The work also develops a graphical mapping of the bibliographic material using the VOS viewer software. The results indicate that <em>Omega</em> is becoming strongly internationalized, with publications from institutions all over the world. Traditionally, English-speaking countries were leading the journal. But during the last few years, the results have visualized the strong growth of Europe and East Asia, and at a lower level, the rest of the countries of the world. The study not only highlights <em>Omega</em>'s past achievements but also points towards its future trajectory, emphasizing the importance of collaboration, diversity, and innovation in maintaining its academic prominence.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"133 ","pages":"Article 103226"},"PeriodicalIF":6.7,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Economically viable reshoring of supply chains under ripple effect 涟漪效应下经济上可行的供应链重组

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-12 DOI: 10.1016/j.omega.2024.103228

Tadeusz Sawik

{"title":"Economically viable reshoring of supply chains under ripple effect","authors":"Tadeusz Sawik","doi":"10.1016/j.omega.2024.103228","DOIUrl":"10.1016/j.omega.2024.103228","url":null,"abstract":"<div><div>This paper presents stochastic mixed integer linear programming models for economically viable supply chain reshoring under the ripple effect, that is, for the integrated optimization of supply chain reshoring and supply chain viability. The problem objective is to select supply chain facilities for relocation and backup suppliers for recovery supplies to simultaneously minimize cost, maximize service and enhance viability. If the primary supplier is not selected for reshoring, the viability can alternatively be improved by recovery supplies from the backup supplier. The problem is formulated as a multi-portfolio stochastic optimization. The portfolio of suppliers/plants for reshoring is optimized along with an alternative recovery portfolio of backup supplies. This study indicates that reshoring decisions directly affect supply chain viability and have positive impact on both its average and worst-case performance. The more risk-aversive is viable reshoring (the confidence level greater than 0.90), the greater is also improvement of supply chain business-as-usual resilience. If increase of expected customer service is more important than cost reduction, supplier reshoring is preferable to backup sourcing. The findings also indicate that cost- and service-optimal reshoring decisions are getting closer when the government subsidy for reshoring significantly increases such that the reduced reshoring costs and domestic costs do not exceed the achieved reduction of lost sales and backup sourcing. Then both conflicting objectives can be simultaneously achieved, which is a highly desirable solution of the economically viable reshoring of supply chain. Numerical examples based on a real-world industrial supply chain prove practical usefulness of the proposed stochastic approach and its high computational efficiency.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"131 ","pages":"Article 103228"},"PeriodicalIF":6.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The role of hubs and economies of scale in network expansion 枢纽和规模经济在网络扩展中的作用

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-12 DOI: 10.1016/j.omega.2024.103220

Fran Setiawan , Tolga Bektaş , Çağatay Iris

{"title":"The role of hubs and economies of scale in network expansion","authors":"Fran Setiawan , Tolga Bektaş , Çağatay Iris","doi":"10.1016/j.omega.2024.103220","DOIUrl":"10.1016/j.omega.2024.103220","url":null,"abstract":"<div><div>Freight distribution often operates on the basis of consolidation, which is achieved through the use of hub facilities that allow for economies of scale. Freight networks need to be expanded to meet future demand, to cater for new markets, and to accommodate trends in global supply chains, for which strategic decisions need to be made. These decisions mainly entail the number and location of new hubs to be established. As network expansions require significant capital, striking a balance between the benefits afforded by the new hubs and the expansion costs is crucial. This paper investigates a hub network expansion problem where the configuration of the resulting network is determined by the trade-off between the fixed costs of locating new hubs and new links, as well as routing costs of shipping commodities, and the cost reductions achieved through economies of scale, without imposing a predetermined network structure. This paper also describes a mixed integer programming formulation of the problem and a Benders decomposition algorithm that uses several enhancement techniques to efficiently solve the model to optimality. The application of the algorithm on a real-life case study arising in the expansion of the Indonesian freight transport network yields several managerial insights. In particular, expanding the network with additional hubs and links can yield substantial cost savings, averaging at 47.6%, although at the expense of an increase in the length of the commodity paths. Failing to operate the network at the selected level of economies of scale can result in an increase in the routing costs by up to 58.8%. Expanding the network with no additional hubs leads to a rise in total costs of up to 20.9%. Finally, lower economies of scale leads to an increase in the length of commodity paths, with the routing cost being identified as the most sensitive parameter.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"131 ","pages":"Article 103220"},"PeriodicalIF":6.7,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Strategic Inventory with an Unreliable Manufacturer across Multiple Supply Chain Structures 不可靠制造商跨多供应链结构的战略库存

IF 6.7 2区管理学

Omega-international Journal of Management Science Pub Date : 2024-11-04 DOI: 10.1016/j.omega.2024.103229

Wan Ke , Xiaoyang Zhou , Benjamin Lev , Wenjing Shen

{"title":"Strategic Inventory with an Unreliable Manufacturer across Multiple Supply Chain Structures","authors":"Wan Ke , Xiaoyang Zhou , Benjamin Lev , Wenjing Shen","doi":"10.1016/j.omega.2024.103229","DOIUrl":"10.1016/j.omega.2024.103229","url":null,"abstract":"<div><div>Supply stability has become increasingly crucial amid the reshaping of global supply chains. This paper introduces a novel analytical framework to examine the retailer’s strategic inventory decisions and the effects on the profits of the manufacturer and the supply chain under three supply chain structures: complete decentralization, partial centralization, and complete centralization. Utilizing a game-theoretic approach, we derive equilibrium outcomes revealing that strategic inventory enhances the manufacturer’s profit under complete decentralization. In contrast, this positive effect on the manufacturer’s profit is not always observed under partial centralization. Our findings also indicate that the retailer’s decision to adopt strategic inventory, along with the impact on the supply chain’s profit, is contingent upon the supply stability level and the unit inventory cost. We further analyze the performance of the supply chain under three structures and find that complete centralization always achieves the optimal profit when the retailer does not choose strategic inventory. However, complete centralization does not always achieve the optimal profit when the retailer adopts strategic inventory. These findings provide new insights into the role of strategic inventory across various supply chain structures.</div></div>","PeriodicalId":19529,"journal":{"name":"Omega-international Journal of Management Science","volume":"133 ","pages":"Article 103229"},"PeriodicalIF":6.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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