Optimal multi-period crop procurement and distribution policy with minimum support prices
In: Socio-economic planning sciences: the international journal of public sector decision-making, Volume 89, p. 101671
ISSN: 0038-0121
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In: Socio-economic planning sciences: the international journal of public sector decision-making, Volume 89, p. 101671
ISSN: 0038-0121
In: Socio-Economic Planning Sciences, Forthcoming
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In this dissertation, we focus on three dierent and important operational issues that arise primarily in the context of emerging economies.In the first chapter, we discuss three audit mechanisms that buyers can adopt to ensure supplier compliance in a multi-buyer-single-supplier supply chain. When suppliers (i.e., contract manufacturers) fail to comply with health and safety regulations, buyers (retailers) are compelled to improve supplier compliance by conducting audits and imposing penalties. We discuss three audit mechanisms independent, joint, and shared and evaluate their performance. We show that the damage costs of the buyers and the compliance cost of the supplier play a crucial role in the choice of the audit mechanism that improves channel profits.In the second chapter, we focus on a single-buyer-single-supplier supply chain, not necessarily in the context of emerging economies, and discuss two contracts that can coordinate the supply chain when advance-orders are cheaper to manufacture than rush orders. We show that advance-order discount, when combined with minimum-order-quantity or with inventory-delegation, coordinates the supply chain.In the third chapter, we focus on the role of crop minimum support prices (MSPs) in the context of emerging economies in which farming communities largely comprise of small farmers. We show that MSPs, when not chosen properly, can backfire by hurting farmers' profits.
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In: Decision sciences
ISSN: 1540-5915
ABSTRACTThe alarmingly increasing trends in worldwide waste generation call for a holistic analysis of waste management supply chains. Using a comprehensive end‐to‐end (i.e., waste generation to waste disposal) decision framework, this article analyzes key decisions of a waste management firm (WMF) focused on the proportions of dry (and wet) waste to recycle (and compost). This framework is applied to assess the impact of: (i) the preprocessing of generated waste at source (i.e., the "upstream factors") and (ii) the market prices of recycled dry and composted wet wastes (i.e., the "downstream factors") on WMF's decisions. One key insight is that the WMF will choose to process more waste when the market prices for processed wastes are high, and/or when more waste is preprocessed at source. Improvements in presorting can be more economical and offer a long‐term sustainable solution to efficient waste management. From a policy perspective, we observe that taxing a WMF for waste disposal could dissuade the WMF from participating in waste processing especially when its marginal processing costs are high. The decision framework and the corresponding model are calibrated to different world regions using secondary data on these regions, classified by their income levels. It is observed from our data analysis that uniform "one‐size‐fits‐all" policies are dominated by region‐specific tailored policies for efficient waste management. Hence, prescriptions should be carefully formulated based on the type of waste generated and the processing/disposal options available in a region. For example, composting more wet waste at source is a better choice in low‐, low‐middle‐, and middle‐high‐income regions, whereas this is not the case in high‐income regions. The proposed decision framework also provides an explanation of the negative impact on recycling initiatives at a local level stemming from decreasing recycled material prices. Given that this is the first study to characterize and analyze the waste management supply chain, the article also highlights some areas for future research.
In: Prashant Chintapalli and Christopher S. Tang, The Impact of Crop Minimum Support Prices on Crop Selection and Production, and Farmer Welfare in The Presence of Myopic and Strategic Farmers. European Journal of Operational Research (2021). Forthcoming.
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In: Prashant Chintapalli and Christopher S. Tang, Crop Minimum Support Price versus Cost Subsidy: Farmer and Consumer Welfare. Production and Operations Management (2021). Forthcoming.
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In: Management Science, Forthcoming
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