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4,999
On Theories Explaining the Success of the Gravity Equation
, 2001
"... We examine whether two important theories of trade, the HeckscherOhlin theory and the Increasing Returns theory, can account for the empirical success of the socalled gravity equation. Since versions of both theories can predict this equation, we tackle the model identification problem by conditio ..."
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Cited by 242 (3 self)
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We examine whether two important theories of trade, the HeckscherOhlin theory and the Increasing Returns theory, can account for the empirical success of the socalled gravity equation. Since versions of both theories can predict this equation, we tackle the model identification problem
Gravity with Gravitas: a Solution to the Border Puzzle
, 2001
"... Gravity equations have been widely used to infer trade ow effects of various institutional arrangements. We show that estimated gravity equations do not have a theoretical foundation. This implies both that estimation suffers from omitted variables bias and that comparative statics analysis is unfo ..."
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Cited by 670 (4 self)
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Gravity equations have been widely used to infer trade ow effects of various institutional arrangements. We show that estimated gravity equations do not have a theoretical foundation. This implies both that estimation suffers from omitted variables bias and that comparative statics analysis
Structural gravity equations with intensive and
"... Abstract. Recent trade models with heterogeneous firms have changed the interpretation of gravity equations. Chaney (2008) shows that the effect of distance on the number of exporters and average exports depends on key parameters characterizing the elements of market structure. We use firmlevel exp ..."
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Abstract. Recent trade models with heterogeneous firms have changed the interpretation of gravity equations. Chaney (2008) shows that the effect of distance on the number of exporters and average exports depends on key parameters characterizing the elements of market structure. We use firm
Tariffs, Gravity Equation
, 2006
"... Using a straightforward methodology, this paper assesses and estimates the trade barriers impact on exports from the Peruvian economy. The results of the analysis indicate that MFN and/or GSP tariffs rates imposed by developed countries to Peruvian exports are relatively low and, conversely, the num ..."
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Using a straightforward methodology, this paper assesses and estimates the trade barriers impact on exports from the Peruvian economy. The results of the analysis indicate that MFN and/or GSP tariffs rates imposed by developed countries to Peruvian exports are relatively low and, conversely, the number of NTBs and the average number of NTBs per export tariff line are relatively high. This difference produces a higher estimation of the export impact of the NTBs. An implication of these results is that the new wave of regional preferential trade agreements among developed and developing countries (which face similar trade barriers structure as the Peruvian case) may not have meaningful effects on trade flows unless it is accompanied by substantial reductions in the number of NTBs per export tariff line.
Hierarchical Bayesian Method for the Gravity Equations ∗
, 2010
"... Using panel data on country pairs, there are many ways in which fixed effects may be included in gravity models to control for countries ’ business cycle properties; estimates of key parameters can vary considerably, as noted in the literature. This paper tries to answer whether the gravity model es ..."
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estimates the gravity equations for the Euro Zone effect on trade for 22 developed countries during 19802004, a case used previously by Baldwin and Taglioni (2006). The Bayesian results show that the model with timeinvariant importer and exporter dummies is preferred. 1
Using the gravity equation to differentiate among alternative theories of trade
 Canadian Journal of Economics
, 2001
"... The simple gravity equation explains a great deal about the data on bilateral trade flows, and is consistent with several theoretical models of trade. We argue that alternative theories nevertheless predict subtle differences in key parameter values, depending on whether goods or homogeneous or diff ..."
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Cited by 153 (1 self)
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The simple gravity equation explains a great deal about the data on bilateral trade flows, and is consistent with several theoretical models of trade. We argue that alternative theories nevertheless predict subtle differences in key parameter values, depending on whether goods or homogeneous
KodairaSpencer theory of gravity and exact results for quantum string amplitudes
 Commun. Math. Phys
, 1994
"... We develop techniques to compute higher loop string amplitudes for twisted N = 2 theories with ĉ = 3 (i.e. the critical case). An important ingredient is the discovery of an anomaly at every genus in decoupling of BRST trivial states, captured to all orders by a master anomaly equation. In a particu ..."
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Cited by 540 (59 self)
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We develop techniques to compute higher loop string amplitudes for twisted N = 2 theories with ĉ = 3 (i.e. the critical case). An important ingredient is the discovery of an anomaly at every genus in decoupling of BRST trivial states, captured to all orders by a master anomaly equation. In a
The log of Gravity
 THE REVIEW OF ECONOMICS AND STATISTICS
, 2005
"... Although economists have long been aware of Jensen's inequality, many econometric applications have neglected an important implication of it: the standard practice of interpreting the parameters of loglinearized models estimated by ordinary least squares as elasticities can be highly misleadin ..."
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Cited by 333 (6 self)
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develop the argument using one particular illustration, the gravity equation for trade, and apply the proposed technique to provide new estimates of this equation. We find significant differences between estimates obtained with the proposed estimator and those obtained with the traditional method
Intermediate inputs and the export gravity equation
, 2013
"... This paper introduces trade in intermediate inputs into a standard heterogeneous firms Melitz (2003)/Chaney (2008) model of trade among asymmetric countries. Consistent with the recent firmlevel evidence, in our model imports of intermediate inputs positively affect export performance. In addition, ..."
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Cited by 1 (1 self)
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that exporting firms also use foreign intermediate inputs, the effect of traditional gravity forces (i.e., distance and GDP) on exports also depend on import activities. We test the main implications of the model using a large database of Italian firms and we find that, consistent with the theoretical
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