Results 101 to 110 of about 269,909 (321)

Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space

Advanced Robotics Research, EarlyView.
A quadruped robot masters dynamic jumps through constrained spaces with animal‐inspired moves and intelligent vision control. This hierarchical learning approach combines imitation of biological agility with real‐time trajectory planning. Although legged animals are capable of performing explosive motions while traversing confined spaces, replicating ...
Zeren Luo, Jiahui Zhang, Yimin Han, Ji Ma, Minghao Lu, Ioannis Havoutis, Peng Lu   +6 more
wiley   +1 more source

On the Accurate Determination of the Orthometric Correction to Levelled Height Differences—A Case Study in Hong Kong

Geomatics
Orthometric heights are practically determined from levelling and gravity measurements by applying orthometric corrections to levelled height differences.
Robert Tenzer, Albertini Nsiah Ababio, Ismael Foroughi, Martin Pitoňák, Pavel Novák, Wenjin Chen, Franck Eitel Kemgang Ghomsi   +6 more
doaj   +1 more source

Deflections of the vertical and geoid heights from gravity gradients [PDF]

Acta Geodaetica et Geophysica Hungarica, 2005
In the 20th century more than 60000 torsion balance measurements were made in Hungary. At present efforts are made to rescue the historical torsion balance data; today 24544 torsion balance measurements are available for further processing in computer database. Previously only the horizontal gradients of gravity were used by geophysicists, but there is
openaire   +2 more sources

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Efficiency of Optimized Approaches for Gravity Operator Modeling

Remote Sensing
Numerical tesseroid and radial-type approaches are presented and compared in terms of their efficiency for deriving the regional geoid height, vertical gravity, and gradiometric anomalies from sea floor topography grids. The vertical gradient function is
David Fuseau, Lucia Seoane, Guillaume Ramillien, José Darrozes, Bastien Plazolles, Didier Rouxel, Thierry Schmitt, Corinne Salaün   +7 more
doaj   +1 more source

GEOID-QUASIGEOID CORRECTION IN FORMULATION OF THE FUNDAMENTAL FORMULA OF PHYSICAL GEODESY [PDF]

Revista Brasileira de Cartografia, 2003
To formulate the fundamental formula of physical geodesy at the physical surface of the Earth, the gravity anomalies are used instead of the gravity disturbances, because the geodetic heights above the geocentric reference ellipsoid are not usually ...
Petr Vanícek, Robert Tenzer
doaj  

Anomalies of the Vertical Gradient of Gravity Associated with Anomalies of Gravity.

Journal of Physics of the Earth, 1952
The gravity anomaly is necessarily associated with the anomaly of the vertical gradient of gravity. The relation between the two kinds of anomaly has been invest gated. The anomaly of the vertical gradient is sometimes too large to be neglected in the free air reduction of gravity.
openaire   +2 more sources

3D correlation imaging of the vertical gradient of gravity data

Journal of Geophysics and Engineering, 2010
We present a new 3D correlation imaging approach for vertical gradient of gravity data for deriving a 3D equivalent mass distribution in the subsurface. In this approach, we divide the subsurface space into a 3D regular grid, and then at each grid node calculate a cross correlation between the vertical gradient of the observed gravity data and the ...
Lianghui Guo, Xiaohong Meng, Lei Shi
openaire   +1 more source

PERANCANGAN SOFTWARE INTERAKTIF UNTUK PERHITUNGAN GRADIEN HORIZONTAL ANOMALI GAYA BERAT [PDF]

, 2017
ABSTRAKGradien horizontal merupakan salah satu cara dari interpretasi kualitatif data anomali gaya berat yang langsung dapat menentukan batas-batas benda penyebab anomali di bawah permukan.
Amir Asyqari
core  

Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms

, 2014
About 300 experiments have tried to determine the value of the Newtonian gravitational constant, G, so far, but large discrepancies in the results have made it impossible to know its value precisely.
A Bertoldi, A Louchet-Chauvet, A Peters, AD Cronin, C Antoine, CH Bagley, F Sorrentino, F Sorrentino, F Sorrentino, F. Sorrentino, G Amelino-Camelia, G Ferrari, G Lamporesi, G Lamporesi, G. M. Tino, G. Rosi, GG Luther, GM Tino, GM Tino, GT Foster, H Cavendish, HV Parks, J Hogan, J Luo, JB Fixler, JH Gundlach, JM McGuirk, L-C Tu, L. Cacciapuoti, M de Angelis, M Kasevich, M. Prevedelli, N Poli, O Karagioz, P Storey, PJ Mohr, S Dimopoulos, S Schlamminger, S Stellmer, S-Y Lan, T Quinn, T Quinn, TJ Quinn, TL Gustavson, TR Armstrong, Z-K Hu   +45 more
core   +1 more source