Full-waveform velocity inversion based on the acoustic wave equation in the time domain is investigated in this paper ... Hicks, “Gauss-Newton and Full Newton Methods in Frequency-space Seismic ...

The numerical scheme is based on finite difference method. This program is also providing several boundary conditions. More particularly the Neumann, Dirichlet and Mur boundary conditions.

Math, citizen science and the scientific method are all tools researchers use to investigate evidence of unidentified ...

Lovell, B., Whipple, F. L., and Solomon, L. H., Nature, 202, 377 (1964).

The fast-moving gas cloud could help explain the so-called missing satellite problem, if the object is what scientists think ...

Here, among the arid desert sands of Las Cruces, Sierra Space wanted to see in real-time how its space station handled ...

Neutron star mergers are collisions between neutron stars, the collapsed cores of what were once massive supergiant stars.

Angular Velocity,Azimuth Angle,Circular Trajectory,Comfortable Distance,Complex Environment,Constant Speed,Dynamic Approach,Dynamic Obstacles,Dynamic Window,Dynamic ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? In a paper ...

In a nutshell Scientists propose that the entire universe might be spinning very slowly (0.002 rotations per billion years), ...