The gravity gradient tensor, which has a higher resolution than gravity, is used in variety of fields, including the discovery energy resources, auxiliary navigation, and national defense building. Our team achieved significant advancements various essential technologies, such as high-resolution accelerometers, constructed China’s first self-controllable shipboard measurement system. In laborat...

micro gravity data was collected in a crowded street in tehran where a subway terrain tunnel is to be excavated. the data is corrected for the gravity effects of the surrounding densely built up area with diverse buildings and the bouguer gravity anomalies are computed. the residual gravity anomalies are prepared by removing a trend surface. upward continuation is used to remove the gravity eff...

We present a new bouncing cosmological solution of the non-local theory known as infinite derivative gravity, which goes beyond recursive ansatz, ${\Box R = r_1 +r_2}$. The field equations are evaluated using spectral decomposition with respect to eigenfunctions wave operator. energy-momentum tensor computed for this geometry turns out be much more sensitive choice form-factor, since it depends...

one of the main goals of interpretation of gravity data is to detect location and edges of the anomalies. edge detection of gravity anomalies is carried out by different methods. terracing of the data is one of the approaches that help the interpreter to achieve appropriate results of edge detection. this goal becomes a complex task when the gravity anomalies have smooth borders due to gradual ...

Local curvature represents an important shape parameter of space curves which are well described by differential geometry. We have developed an estimator for local curvature of space curves embedded in nD grey-value images. There is neither a segmentation of the curve needed nor a parametric model assumed. Our estimator works on the orientation field of the space curve. This orientation field a...

Previously, the Einstein equation has been described as an of state, general relativity equilibrium state gravity, and $f({\cal R})$ gravity a non-equilibrium one. We apply Eckart's first order thermodynamics to effective dissipative fluid describing scalar-tensor gravity. Surprisingly, we obtain simple expressions for heat flux, "temperature gravity", shear bulk viscosity, entropy density, plu...

It is shown that the addition of a topological invariant (Gauss-Bonnet term) to the anti-de Sitter (AdS) gravity action in four dimensions recovers the standard regularization given by holographic renormalization procedure. This crucial step makes possible the inclusion of an odd parity invariant (Pontryagin term) whose coupling is fixed by demanding an asymptotic (anti)self-dual condition on t...