We show that a gravity model explains international transactions in "nancial assets at least as well as goods trade transactions. Our results support the hypothesis that informational asymmetries are responsible for the strong negative relationship between asset trade and distance. This result is very important for theories of asset trade, portfolio adjustments and home bias. We strengthen it b...

This paper investigates how well the gravity model explains various cross-border flows that may lead to knowledge spillovers. It turns out that the model works well for trade and telephone traffic, but less satisfactorily for merger and acquisition flows. © 2007 Elsevier B.V. All rights reserved.

We study neutrino physics in the context of the localized gravity model with nonfactorizable metric proposed by Randall and Sundrum. Identifying the right-handed neutrino with a bulk fermion zero mode, which can be localized on the “hidden” 3-brane in the Randall–Sundrum model, we obtain naturally small Dirac neutrino masses without invoking a see-saw mechanism. Our model predicts a strong hier...

A model for the climatological mean sea surface temperature (SST) of the tropical Pacific Ocean is developed. The upper ocean response is computed using a time dependent, linear, reduced gravity model, with the addition of a constant depth frictional surface layer. The full three-dimensional temperature equation and a surface heat flux parameterization that requires pecification ofonly wind spe...

Endowed with abundant supply of raw materials and low labor cost Asian countries have become the world’s largest exporters of apparel products for the past few decades. In 2007, the value of Asian suppliers’ total apparel exports to the world amounted to US$ 165 billion which represented 52% of the world’s total apparel exports. The gravity trade model is utilized with an exploration at the agg...

Simini, González, Maritan et Barabási recently proposed a “universal model for mobility and migration patterns” : the radiation model. They compare the radiation model to the gravity model and conclude that the latter suffers important theoretical inconsistencies and systematic predictive discrepancies. By confronting both models, they address crucial issues about formalisms and usages of spati...

We study the process ee → ee at a high energy ee collider including the effect of graviton exchanges in the warped gravity model of Randall and Sundrum. Discovery limits for gravitons are established and the effects of polarization are discussed.

In this paper we calculate explicitly the secular classical precessions of the node Ω and the perigee ω of an Earth artificial satellite induced by the static, even zonal harmonics of the geopotential up to degree l = 20. Subsequently, their systematic errors induced by the mismodelling in the even zonal geopotential coefficients Jl are compared to the general relativistic secular gravitomagnet...

The paper analyzes the network structure of international trade. Adapting a network approach developed in the physical sciences, we propose that international trade functions like a scale-free network. For each commodity group we calculate a characteristic parameter which reflects the structure of its trading network. We then insert this variable into an expanded gravity model to explore the ef...

© A m Abstract: This paper investigates to what extent international migration can be explained by climatic variations. A gravity model of migration augmented with average temperature and precipitation in the country of origin is estimated using a panel data set of 142 sending countries for the period 1995 to 2006. We find two primary results. First, temperature is positively correlated with mi...