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作者:V. Agrawal, Vishal; Chakraborty, Soudipta; Yucel, Safak
作者单位:Georgetown University; University of Kansas
摘要:Problem definition: Developers generate carbon offsets by investing in emissions-reduction projects to receive two sources of revenue: project revenue, for example, from the electricity sold in a renewable energy project, and offset revenue based on offsets issued by a nonprofit carbon registry. The registry ensures additionality, that is, the offset should represent one unit of reduction from the developer's business-as-usual emissions: what the developer's emissions would have been without t...
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作者:Zhao, Sai; Gui, Luyi; Cui, Shiliang
作者单位:Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; University of California System; University of California Irvine; Georgetown University
摘要:Problem definition: Emissions from diesel semitrucks, such as nitrogen oxides, have contributed significantly to air pollution, prompting government intervention. However, directly regulating trucking companies' diesel truck usage often falls outside the jurisdiction of local governments. A legislative alternative is to regulate other sectors within the local region that indirectly drive diesel truck usage, referred to as indirect emission sources. The first of such regulations is Southern Cal...
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作者:Chan, Timothy C. Y.; Lin, Bo; Saxe, Shoshanna
作者单位:University of Toronto; University of Toronto
摘要:Problem definition: A wide range of decision problems can be formulated as bilevel programs with independent followers, which, as a special case, include two-stage stochastic programs. These problems are notoriously difficult to solve, especially when a large number of followers are present. Motivated by a real-world cycling infrastructure planning application, we present a general approach to solving such problems. Methodology/results: We propose an optimization model that explicitly consider...
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作者:Bai, Miao; Liu, Nan; Zhang, Zheng
作者单位:University of Connecticut; Boston College; Zhejiang University
摘要:Problem definition: Inpatients are often treated as the captive audience for hospital diagnostic services, and they are notified only when service capacity is available. This arrangement causes significant chaos and inefficiencies in hospital operations. Methodology/results: We propose an innovative scheduling approach called advance notice to manage hospital diagnostic practices. Advance notice is a brand-new scheduling paradigm in between classic allocation scheduling and advance scheduling....
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作者:Baron, Opher; Lu, Tianshu; Wang, Jianfu
作者单位:University of Toronto; City University of Hong Kong
摘要:Problem definition: Many service and manufacturing systems use both capacity rationing (CR) and priority to differentiate among their customers. We model these as a two-class nonpreemptive priority M/M/c queueing model and the practice of CR; an arriving low-priority customer can directly enter service only when the number of idle servers is higher than the CR level, k. For these systems, we separately discuss two important features that are common in practice but ignored in the literature; su...
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作者:Ramchandani, Pia; Bastani, Hamsa; Wyatt, Emily
作者单位:University of Pennsylvania
摘要:Problem definition: The covert nature of sex trafficking provides a significant barrier to generating large-scale, data-driven insights to inform law enforcement, policy, and social work. Existing research has focused on analyzing commercial sex sales on the internet to capture scalable geographical proxies for trafficking. However, ads selling commercial sex do not reveal information about worker consent. Therefore, it is challenging to identify risk for trafficking, which involves fraud, coe...
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作者:Baucum, Matt; Harris, Matt; Kessler, Lawrence; Luc, Guanyi
作者单位:Colorado State University System; Colorado State University Fort Collins; University of Tennessee System; University of Tennessee Knoxville; State University System of Florida; Florida State University
摘要:Problem definition: Substance use disorder (SUD) is a pressing health concern in the United States, and connecting communities with treatment is a growing public health imperative. We study the optimal allocation of substance use treatment centers across counties within U.S. states over a multiyear time horizon. We use a three-part objective function that minimizes (i) statewide overdose deaths, (ii) mismatch between counties' treatment center access and overdose death rates (inequity), and (i...
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作者:Guajardo, Jose A.; Rashidinejad, Elaheh; Romero, Gonzalo; Zaman, Hosain
作者单位:University of California System; University of California Berkeley; McGill University; University of Toronto
摘要:Problem definition: The diffusion of technological innovations in low-and middle-income countries (LMICs) has been facilitated by the use of rent-to-own (RTO) business models, which give flexibility to consumers by allowing them to make incremental payments over time. Understanding how to best manage this flexibility is a fundamental problem for firms in LMICs. Motivated by an application of RTO to the distribution of solar lamps, we examine the drivers and impact of payment flexibility in RTO...
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作者:Cao, Junyu; Qi, Wei; Zhang, Yan
作者单位:University of Texas System; University of Texas Austin; Tsinghua University; McGill University
摘要:Problem definition: A shift toward shopping at (autonomous) wheeled vending stores is redefining urban retail. Compared with traditional brick-and-mortar stores, such mobile stores are cost efficient to deploy and adaptive to fast-evolving business environments. However, mobile stores are confronted with unknown demand and limited capacity. Store mobility enables demand learning and profit maximization, yet an optimal dynamic store location policy remains unclear. Methodology/results: We model...
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作者:Guo, Mengzi Amy; Jiang, Hansheng; Shen, Zuo-Jun Max
作者单位:University of California System; University of California Berkeley; University of Toronto; University of Hong Kong; University of Hong Kong
摘要:Problem definition: We consider the dynamic pricing problem of multiple products under (asymmetric) reference effects over an infinite horizon. Unlike existing literature, which is mostly focused on the single-product setting, our multiproduct setting takes into account the cross-product effects among substitutes and incorporates the memory-based reference prices into the multinomial logit (MNL) demand model. Even with the singleproduct logit demand, the structure of the optimal pricing policy...