This paper assesses the effect of coal energy production volume, exchange rate, inflation and gross domestic product on volume Indonesia's exports in 1998-2019. Based an Autoregressive Distributed Lag (ARDL) approach, short run, we find that has a negative relationship to exports. However, other hand, positive In long also inflation, Besides, rate Keywords: Coal Energy, Exchange Rate, Inflation...

This paper gives a rigorous derivation of a functional proposed by Aftalion and Rivière [Phys. Rev. A 64, 043611 (2001)] to characterize the energy of vortex filaments in a rotationally forced Bose-Einstein condensate. This functional is derived as a Γ-limit of scaled versions of the Gross-Pitaevsky functional for the wave function of such a condensate. In most situations, the vortex filament e...

The European Union is one of the blocks of countries in the world that is doing more in the fight against climate change and therefore it has opted to promote the reduction of greenhouse gas emissions. In this paper we analyze Natural and Managerial efficiency of the 28 countries of EU from 2005 to 2013. For this purpose the Malmquist index (MI) has been used, considering crosses on the efficie...

The Intertropical Convergence Zone (ITCZ) narrows in response to global warming in both observations and climate models. However, a physical understanding of this narrowing is lacking. Here we show that the narrowing of the ITCZ in simulations of future climate is related to changes in the moist static energy (MSE) budget. MSE advection by the mean circulation and MSE divergence by transient ed...

We provide a derivation of a more accurate version of the stochastic Gross– Pitaevskii equation, as introduced by Gardiner et al (2002 J. Phys. B: At. Mol. Opt. Phys. 35 1555). This derivation does not rely on the concept of local energy and momentum conservation and is based on a quasiclassical Wigner function representation of a ‘high temperature’ master equation for a Bose gas, which include...

In this paper we use the matrix string approach to begin a study of high energy scattering processes in M-theory. In particular we exhibit an instanton-type configuration in 1+1 super-Yang-Mills theory that can be interpreted as a non-perturbative description of a string interaction. This solution is used to describe high energy processes with nonzero longitudinal momentum exchange, in which an...