Results 61 to 70 of about 1,033,209 (296)
THE GRAVITY MODEL OF TRADE: A THEORETICAL PERSPECTIVE
Review of Innovation and Competitiveness, 2019 Purpose. The purpose of this study is to trace the theoretical developments of the gravity model of trade. The key question is: what are the dominant features of the development of the gravity trade model? Methodology.
Saleh Shahriar +3 more
doaj +1 more source
Terrestrial, Atmospheric and Oceanic Sciences, 2022 The Tatun Volcanic Group (TVG) is an active volcanic system that poses potential volcanic hazards to northern Taiwan. Groundwater migration can be sensitive to volcanic activities and can induce temporal gravity changes.
Tzuyi Lien +5 more
doaj +1 more source
Understanding the global patterns of Venezuelan migration: determinants of an expanding diaspora
Development Studies Research, 2023 The economic, political and humanitarian crisis in Venezuela intensified since 2015 and has led to the largest migration crisis in the region’s modern history.
Sandro Pirovino, Elissaios Papyrakis
doaj +1 more source
Model for gravity at large distances
, 2010 We construct an effective model for gravity of a central object at large scales. To leading order in the large radius expansion we find a cosmological constant, a Rindler acceleration, a term that sets the physical scales and subleading terms.
Grumiller, Daniel
core +1 more source
Standard Model and Gravity from Spinors [PDF]
, 2008 We propose to unify the Gravity and Standard Model gauge groups by using algebraic spinors of the standard four-dimensional Clifford algebra, in left-right symmetric fashion.
Nesti, F.
core +1 more source
Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation
Advanced Engineering Materials, EarlyView.This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley +1 more source
The impact of regional trade agreements on bilateral trade flows: A Systemic Literature Review
Competitio, 2022 This paper reviews the theoretical and empirical literature on the impact of regional trade agreements on trade. The empirical literature is arranged based on the econometric methods used to estimate the gravity model.
SIBULELE MCHANI
doaj +1 more source
Modeling repulsive gravity with creation [PDF]
Journal of Astrophysics and Astronomy, 2007 There is a growing interest in the cosmologists for theories with negative energy scalar fields and creation, in order to model a repulsive gravity. The classical steady state cosmology proposed by Bondi, Gold and Hoyle in 1948, was the first such theory which used a negative kinetic energy creation field to invoke creation of matter. We emphasize that
Vishwakarma, R. G., Narlikar, J. V.
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert +7 more
wiley +1 more source
Holographic Dark Energy from Fluid/Gravity Duality Constraint by Cosmological Observations
, 2018 In this paper, we obtain a holographic model of dark energy using the fluid/gravity duality. This model will be dual to a higher dimensional Schwarzschild black hole, and we would use fluid/gravity duality to relate to the parameters of this black hole ...
Abreu, Everton M. C. +3 more
core +1 more source