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The authors wish to thank the World Bank for financial support and accesses to information sources. For many helpful comments and suggestions, the authors are also grateful to Nicholas Treich and other conferees at the European Society for Benefit-Cost Analysis first annual meeting at the Toulouse School of Economics, November 2019; Bryan Land and other participants at a World Bank stakeholder meeting in Sydney Australia, November 2018; Jonathan Wiener, of Duke University; Steve Grimsley, a Senior Geophysical Advisor, previously of Hess Corporation; and Chris Colton, founder of Hexis Energy Trading, LLC. Carl Brown-Grimm and Shu-Chuan Chiu provided essential research assistance. Notwithstanding this excellent input, the authors bear exclusive responsibility for the findings, judgements, and conclusions in this article.
Cost-Benefit Analysis --- Deep Sea Mining --- Energy --- Environmental Management --- Extractive Industries --- Fundamental Uncertainty --- Industry --- International Seabed Authority --- Mining --- Mining and Extractive Industry (Non-Energy) --- Mining Lease --- Natural Resource Management --- Oceans --- Seabed Mining --- Water Resources
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In this paper we construct a short run model of the firm describing the behavior of thirteen U.S. airlines during the difficult transition to deregulation. Several modeling scenarios are developed to assess three common assumptions in cost studies: the use of time as a proxy for technological change as opposed to a more thorough description of changes in the production technique, the assumption of cost minimizing behavior as opposed to permitting allocative inefficiency in input selection, and the assumption exogeneity of output and capital and their characteristics as opposed to endogenous decisions regarding these variables. Derived properties of the resulting eight combinations of these issues are calculated to identify the sensitivity of these properties to the modeling assumptions. The most dramatic finding is that input concavity are reduced by 80 percent by relaxing the assumption of cost minimization. Demand and substitution elasticities are nearly twice as large under our most flexible compared to the least flexible scenarios. Measured returns to scale are substantively much higher when a more complete description of the production technique is included in the model, and when this production technique is permitted to be modeled endogenously. Similarly, cost complementarity is quite sensitive to the assumption of endogeneity. Finally, cost models based on these three common assumptions over state the level of productivity growth by as much as 40%. By correctly modeling and estimating the production technique, our most general model predicts a level of productivity growth which is quite similar to that based on Divisia indices calculations.
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In this paper we review a number of analytical methods and issues related to identifying and estimating the source of productivity growth. The two major methods used in measuring productivity growth -- index number and econometric estimation approach -- are briefly discussed. Substantive issues such as the contribution of R&D capital and R&D spillovers, infrastructure capital, allocative distortions, nature of the market structure and technological advancement on productivity growth at various levels of aggregation are examined. The attributes of the static and dynamic factor demand models used to estimate the contribution of different inputs to productivity growth are described and the evaluation of the production process changes in response to exogenous factors and their impact on productivity growth are discussed. Econometric issues and data considerations for proper estimation of the underlying structural models are noted briefly as well.
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