Results 21 to 30 of about 129,096 (265)
Investigating the impact of GDP and distance variables in the gravity model using sign and rank tests [PDF]
Eastern Journal of European Studies, 2021 The gravity model of trade has been a workhorse of international economics over the last fifty years. The main variables incorporated in the standard gravity model of trade are gross domestic product of trading countries and distance between them.
Berislav ŽMUK, Hrvoje JOŠIĆ
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Analysis of limitations on recovery of gravity field based on satellite gravity gradient data
Geodesy and Geodynamics, 2021 Although satellite gravity gradient data plays a great role in determining short-wavelength part of static gravity field model, accuracy of the long-wavelength part of gravity field model recovered by them are poor, which leads to only a few applications
Xiaoyun Wan +4 more
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Marine gravity modelling from SARAL/AltiKA data using the Least Square Collocation for the Red Sea
Egyptian Journal of Remote Sensing and Space Sciences, 2023 Marine gravity has been modeled using satellite radar altimetry for more than two decades. However, the accuracy of the predicted gravity field is constrained by the range precision and spatial coverage of the altimetry observations.
Ahmed Zaki +4 more
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A MINIMAL MODEL FOR QUANTUM GRAVITY [PDF]
Modern Physics Letters A, 2005 We argue that the model of a quantum computer with N qubits on a quantum space background, which is a fuzzy sphere with n = 2N elementary cells, can be viewed as the minimal model for quantum gravity. In fact, it is discrete, has no free parameters, is Lorentz-invariant, naturally realizes the holographic principle, and defines a subset of punctures ...
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Full Tensor Gradient of Simulated Gravity Data for Prospect Scale Delineation
Journal of Mathematical and Fundamental Sciences, 2014 Gravity gradiometry measurement allows imaging of anomalous sources in more detail than conventional gravity data. The availability of this new technique is limited to airborne gravity surveys using very specific instrumentation.
Hendra Grandis, Darharta Dahrin
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Binary structure constrained gravity inversion based on seismic first arrival travel time data
Frontiers in Earth Science, 2023 Gravity exploration method is one of the important methods for deep mineral resource exploration, but gravity data inversion has limited resolution ability in the vertical direction.
Xinhui Deng +2 more
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EVALUATION OF ERRORS IN PARAMETERS DETERMINATION FOR THE EARTH HIGHLY ANOMALOUS GRAVITY FIELD [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2016 Subject of Research.The paper presents research results and the simulation of errors caused by determining the Earth gravity field parameters for regions with high segmentation of gravity field.
L. P. Staroseltsev, O. M. Yashnikova
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A Review of Marine Gravity Field Recovery from Satellite Altimetry
Remote Sensing, 2022 Marine gravity field recovery relies heavily on satellite altimetry. Thanks to the evolution of altimetry missions and the improvements in altimeter data processing methods, the marine gravity field model has been prominently enhanced in accuracy and ...
Zhen Li +4 more
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A MINIMAL MODEL FOR DILATONIC GRAVITY [PDF]
Modern Physics Letters A, 2000 We study a new minimal scalar–tensor model of gravity with Brans–Dicke factor ω(Φ)≡0 and cosmological factor Π(Φ). The constraints on Π(Φ) from known gravitational experiments are derived. We show that almost any time evolution of the scale factor in a homogeneous isotropic Universe can be obtained via a properly chosen Π(Φ) and discuss the general ...
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Virtual zero gravity impact on internal gravity model [PDF]
2017 IEEE Virtual Reality (VR), 2017 This project investigates the impact of a virtual zero gravity experience on the human gravity model. In the planned experiment, subjects are immersed with HMD and full body motion capture in a virtual world exhibiting either normal gravity or the apparent absence of gravity (i.e. body and objects floating in space).
Thibault Porssut +4 more
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