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Strategic Complementarities in a Dynamic Model of Technology Adoption
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Year: 2023 Publisher: National Bureau of Economic Research

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Mexican Fauna in the Anthropocene
Authors: --- --- --- ---
ISBN: 9783031172779 9783031172762 9783031172786 9783031172793 Year: 2023 Publisher: Cham Springer International Publishing :Imprint: Springer

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This contributed volume presents an analysis of the current conservation status of major faunal groups in Mexico. The chapters describe a prognosis of future challenges, and also explore the expanding threats inherent in the Anthropocene within the context of the unique physical, biological and cultural aspects of the nation. Covering 27 chapters, and written by Mexican and international authors, this book analyzes a wide range of vertebrate and invertebrate animal taxa, their ecosystems and the critical processes related to their present conservation status. This volume is an important reference material for researchers, conservationists and students interested in the biological and ecological processes shaping the Mexican fauna.


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Strategic Complementarities in a Dynamic Model of Technology Adoption : P2P Digital Payments
Authors: --- --- --- --- --- et al.
Year: 2023 Publisher: Cambridge, Mass. National Bureau of Economic Research

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This paper develops a dynamic model of technology adoption featuring strategic complementarities: the benefits of usage increase with the number of adopters. We study the diffusion of new means of payments, where such complementarities are pervasive. We show that complementarities give rise to multiple equilibria, suboptimal allocations, and study the planner's problem. The model generates gradualism in adoption, as individuals optimally wait for others to adopt before doing so. We apply the theory to the adoption of SINPE, an electronic peer-to-peer (P2P) payment app developed by the Central Bank of Costa Rica. Transaction-level data on the use of SINPE and several administrative data sets on the network structure allow us to exploit plausibly exogenous variation and to document sizable complementarities. A calibrated version of the model shows that the optimal subsidy pushes the economy to universal adoption.

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