-
作者：Chaturvedi, Aadhaar; Martinez-de-Albeniz, Victor
作者单位：University of Namur; University of Navarra; IESE Business School
摘要：Firms mitigate uncertainty in demand and supply by carrying safety stock, planning for excess capacity and diversifying supply sources. In this study, we provide a framework to jointly optimize these three levers in a periodic review infinite horizon setting, and in particular we examine how one can reduce inventory and capacity investments through proper diversification strategies. Observing that a modified base-stock inventory policy is optimal, we find that the capacity-diversification prob...
-
作者：Gencosman, Burcu Caglar; Begen, Mehmet A.; Ozmutlu, Huseyin Cenk; Yilmaz, Imren Ozturk
作者单位：Uludag University; Western University (University of Western Ontario)
摘要：We consider scheduling issues at Beycelik, a Turkish automotive stamping company that uses presses to give shape to metal sheets in order to produce auto parts. The problem concerns the minimization of the total completion time of job orders (i.e., makespan) during a planning horizon. This problem may be classified as a combined generalized flowshop and flexible flowshop problem with special characteristics. We show that the Stamping Scheduling Problem is NP-Hard. We develop an integer program...
-
作者：Netland, Torbjorn H.; Ferdows, Kasra
作者单位：Norwegian University of Science & Technology (NTNU); Georgetown University
摘要：There is currently no theory that explains the pattern of change in a plant's performance as it implements a lean program. Does it improve at a declining, increasing, or constant rate, or in some other pattern? We use empirical data from the implementation of the Volvo Group's lean program worldwide to develop a grounded theory to explain this pattern. We find that the pattern roughly follows an S-curve shape: as a plant progresses in its implementation of lean production, its operational perf...
-
作者：Chandrasekaran, Aravind; Linderman, Kevin; Sting, Fabian J.; Benner, Mary J.
作者单位：University System of Ohio; Ohio State University; University of Minnesota System; University of Minnesota Twin Cities; Erasmus University Rotterdam; Erasmus University Rotterdam - Excl Erasmus MC
摘要：High-tech organizations maintain a portfolio of R&D projects that address problems with different levels of complexity. These projects use different strategies to search for technological solutions. Projects refining existing products, processes, and technologies, for instance, employ a local search strategy to improve performance, while projects developing new products, processes, and technologies employ a distant search strategy. However, projects can shift in their levels of complexity due ...
-
作者：Zhao, Yingxue; Zhao, Chuan; He, Mingke; Yang, Changchun
作者单位：University of International Business & Economics; Beijing Technology & Business University
摘要：By applying the state feedback principle of control theory, this study develops a state-feedback model that is capable of self-compensation and self-adjustment for inventory control. To be specific, under the state-feedback model, deviation between material order quantity and actual shipment can be dynamically adjusted in response to the actual shipment with the pole-placement state-feedback mechanism. As a result of this merit, the state-feedback model can ensure a more accurate order in each...
-
作者：Dong, Yan; Xu, Kefeng; Xu, Yi; Wan, Xiang
作者单位：University of South Carolina System; University of South Carolina Columbia; University of Texas System; University of Texas at San Antonio; University System of Maryland; University of Maryland College Park; University System of Ohio; Ohio State University
摘要：Outsourcing stretches supply chains longer with added contract manufacturers responsible for the manufacturing of parts and final products. Should a firm change its quality management approach as its supply chain becomes longer with outsourced manufacturing? This paper studies a brand owner's optimal choice between two commonly used quality management approaches: an inspection-based approach and an external failure-based approach, in two supply chains - a dyadic supply chain and a multi-level ...
-
作者：He, Yuhong; Ray, Saibal; Yin, Shuya
作者单位：California State University System; California State University Fullerton; McGill University; University of California System; University of California Irvine
摘要：Firms producing complementary goods often strategically form groups and jointly sell their products to better coordinate their decisions. For consumer durables, decisions about such collaboration might be complicated due to two factors. Because of their durability and presence of used goods markets, such products engender future price competition between new and used goods. On the other hand, consumers of such products might be forward-looking and patient, both of which affect their purchasing...
-
作者：Arya, Anil; Mittendorf, Brian
作者单位：University System of Ohio; Ohio State University
摘要：The organization of charitable distribution channels to ensure donor contributions reach beneficiaries in an efficient manner and the use of accounting metrics of such efficiency (whether provided directly or by charity rating groups) are oft-discussed issues in the nonprofit sector. The two issues are inextricably linked since reported efficiency measures influence subsequent donor giving. This study develops a parsimonious model of a charity that must decide how best to employ its resources,...
-
作者：Aflaki, Arian; Pedraza-Martinez, Alfonso J.
作者单位：Duke University; Indiana University System; IU Kelley School of Business; Indiana University Bloomington
摘要：This study analyzes the trade-off between funding strategies and operational performance in humanitarian operations. If a Humanitarian Organization (HO) offers donors the option of earmarking their donations, HO should expect an increase in total donations. However, earmarking creates constraints in resource allocation that negatively affect HO's operational performance. We study this trade-off from the perspective of a single HO that maximizes its expected utility as a function of total donat...
-
作者：Li, Xiang; Li, Yongjian; Cai, Xiaoqiang; Shan, Jun
作者单位：Nankai University; Nankai University; Chinese University of Hong Kong; Jinan University
摘要：In recent years, increasing interests have arisen in adding product value through the provision of service. This study considers the problem in which a demand-enhancing service can be provided by different supply chain parties, resulting in four alternative service channels: (a) manufacturer undertaking service, namely M-channel, (b) retailer undertaking service, namely R-channel, (c) manufacturer outsourcing service to third-party (3P), namely M-3P-channel, and (d) retailer outsourcing servic...
