Results 1 to 10 of about 15,943 (261)
Gravity for Dummies and Dummies for Gravity Equations [PDF]
, 2006 This paper provides a minimalist derivation of the gravity equation and uses it to identify three common errors in the literature, what we call the gold, silver and bronze medal errors. The paper provides estimates of the size of the biases taking the currency union trade effect as an example.
Baldwin, Richard, Taglioni, Daria
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Stochastic Gravity: Theory and Applications
Living Reviews in Relativity, 2008 Whereas semiclassical gravity is based on the semiclassical Einstein equation with sources given by the expectation value of the stress-energy tensor of quantum fields, stochastic semiclassical gravity is based on the Einstein–Langevin equation, which ...
Hu Bei Lok, Verdaguer Enric
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Transfers in the gravity equation [PDF]
Canadian Journal of Economics/Revue canadienne d'économique, 2021 AbstractThis study integrates development aid into a theoretically founded structural gravity model that considers primary and secondary effects of aid as an income transfer and as a bilateral trade cost determinant. We identify the parameters of our model using a two‐stage approach that includes a state‐of‐the‐art Poisson pseudo‐maximum likelihood ...
Kruse, Hendrik W. +2 more
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Mathematics, 2023 In this work, it is shown that the geometry of a gravity field generated by a spheroid with low eccentricity can be described with the help of a newly modified Helmholtz equation.
Gerassimos Manoussakis
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The Severity of Energy Sector Sanctions and Their Impact on Iran’s Trade: An Application of the Gravity Equation [PDF]
Pizhūhishnāmah-i Iqtiṣād-i Inirzhī-i Īrān, 2022 There have been many studies on economic sanctions and the effectiveness of these sanctions. In these studies, the sanction variable treats as one or two dummy variables (binary), to indicate at most four levels (no sanctions-mild sanctions-severe ...
Taha Shishegari +3 more
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A Gravity Equation for Commuting [PDF]
SSRN Electronic Journal, 2012 This paper derives a gravity equation for commuter flows from a simple spatial labor market model, and uses it to identify the effect of regional borders on commuting. This structural approach allows us to identify the relevant control variables and sources of potential omitted variable bias.
Persyn, Damiaan, Torfs, Wouter
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Aggregation and the Gravity Equation [PDF]
AEA Papers and Proceedings, 2019 One of the most successful empirical relationships in international trade is the gravity equation. A key decision for researchers in estimating this relationship is the level of aggregation, since the gravity equation is log linear, whereas aggregation involves summing the level rather than the log of trade.
Stephen Redding, David Weinstein
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The P-V phase transition of the FRW universe
European Physical Journal C: Particles and Fields, 2022 We define thermodynamic pressure P by work density W as the conjugate quantity of thermodynamic volume V from field equation. We derive the equations of state P=P(V, T) for the Friedmann–Robertson–Walker (FRW) universe in Einstein gravity and a modified ...
Shi-Bei Kong +4 more
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Analytic solutions for Long's equation and its generalization [PDF]
Nonlinear Processes in Geophysics, 2017 Two-dimensional, steady-state, stratified, isothermal atmospheric flow over topography is governed by Long's equation. Numerical solutions of this equation were derived and used by several authors.
M. Humi
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STUDY OF THE GRAVITY EFFECTS OF FERMION AND BOSON PARTICLES IN CURVED SPACETIME
Jurnal Neutrino: Jurnal Fisika dan Aplikasinya, 2023 The types of particles used in this research are Fermion particles and Boson particles. So to describe the movement of Fermion and Boson particles, the Dirac equation and Klein-Gordon equation are used.
Dian Eko Pambudi, Arista Romadani
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