Elasticities of substitution and export demands in a world trade model

1973 ◽  
Vol 4 (4) ◽  
pp. 347-380 ◽  
Author(s):  
Bert G. Hickman ◽  
Lawrence J. Lau
Keyword(s):  
Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 459
Author(s):  
Ignacio Cazcarro ◽  
Albert E. Steenge

This article originates from the theoretical and empirical characterization of factors in the World Trade Model (WTM). It first illustrates the usefulness of this type of model for water research to address policy questions related to virtual water trade, water constraints and water scarcity. It also illustrates the importance of certain key decisions regarding the heterogeneity of water and its relation to the technologies being employed and the prices obtained. With regard to WTM, the global economic input–output model in which multiple technologies can produce a “homogeneous output”, it was recently shown that two different mechanisms should be distinguished by which multiple technologies can arise, i.e., from “technology-specific” or from “shared” factors, which implies a mechanism-specific set of prices, quantities and rents. We discuss and extend these characterizations, notably in relation to the real-world characterization of water as a factor (for which we use the terms technology specific, fully shared and “mixed”). We propose that the presence of these separate mechanisms results in the models being sensitive to relatively small variations in specific numerical values. To address this sensitivity, we suggest a specific role for specific (sub)models or key choices to counter unrealistic model outcomes. To support our proposal we present a selection of simulations for aggregated world regions, and show how key results concerning quantities, prices and rents can be subject to considerable change depending on the precise definitions of resource endowments and the technology-specificity of the factors. For instance, depending on the adopted water heterogeneity level, outcomes can vary from relatively low-cost solutions to higher cost ones and can even reach infeasibility. In the main model discussed here (WTM) factor prices are exogenous, which also contributes to the overall numerical sensitivity of the model. All this affects to a large extent our interpretation of the water challenges, which preferably need to be assessed in integrated frameworks, to account for the main socioeconomic variables, technologies and resources.


1990 ◽  
Vol 12 (1) ◽  
pp. 93-128 ◽  
Author(s):  
Richard D. Haas ◽  
Anthony G. Turner
Keyword(s):  

2006 ◽  
Vol 18 (3) ◽  
pp. 281-297 ◽  
Author(s):  
Anders Hammer Strømman ◽  
Faye Duchin

1988 ◽  
Vol 88 (50) ◽  
pp. i
Author(s):  
International Monetary Fund
Keyword(s):  

Water ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2354
Author(s):  
Ignacio Cazcarro ◽  
Naci Dilekli

The food, energy, and water (FEW) nexus has gained increased attention, resulting in numerous studies on management approaches. Themes of resource use, and their subsequent scarcity and economic rents, which are within the application domain of the World Trade Model, are ripe for study, with the continuing development of forward- and backward-facing economic data. Scenarios of future food and energy demand, relating to supply chains, as well as direct and indirect resource uses, are modelled in this paper. While it is possible to generate a substantial number of economic and environmental scenarios, our focus is on the development of an overarching approach involving a range of scenarios. We intend to establish a benchmark of possibilities in the context of the debates surrounding the Paris Climate Agreement (COP21) and the Green New Deal. Our approach draws heavily from the existing literature on international agreements and targets, notably that of COP21, whose application we associate with the Shared Socioeconomic Pathway (SSP). Relevant factor uses and scarcity rent increases are found and localized, e.g., on the optimal qualities of water, minerals, and land. A clear policy implication is that, in all scenarios, processes of energy transition, raw material use reduction, and recycling must be strengthened.


2008 ◽  
Vol 8 (3) ◽  
pp. 1850143 ◽  
Author(s):  
Nicolas J. Peridy ◽  
Javad Abedini

In the past ten years, emerging countries have considerably increased their production of cars. Although their share in world exports is still below 10%, these countries are now ready to conquer international markets, since they can produce on a large scale at very low production costs compared with the Northern standards. Given the lack of literature on this topic, the main contribution of this paper is to investigate the export potential of emerging countries in the automotive industry. Based on new developments in the gravity equation, an original world trade model is applied to the car industry. The export potentials are calculated from the residuals of the model with the out-sample technique. The main results show that several large emerging countries enjoy a very significant export potential. These are mainly China, Mexico, Brazil, Russia, Iran, Thailand as well as Indonesia. The growing influence of these countries has strong implications for the Triad. Indeed, Japan, Germany and small European countries have already surpassed their export potential. In fact, only North American countries still exhibit a significant export potential, because their export level is currently low in comparison to what it should be given their huge economic size.


1978 ◽  
Vol 25 (1) ◽  
pp. 147 ◽  
Author(s):  
Michael C. Deppler ◽  
Duncan M. Ripley

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