In this paper two approaches are used to reduce the computational work of a migration algorithm. The first approach uses a stepwise optimization procedure for the recursive extrapolation routines used in the migration program. And in the second approach the properties of CFP gathers are used to calculate an image of good quality by using less shot record migrations than in a full pre-stack shot...

in exploration seismology, migration refers to a multi-channel processing step that attempts to spatially re-position events and improve focusing. before migration, seismic data is usually displayed with traces plotted at the surface location of the receivers and with a vertical time axis. this means that dipping reflections are systematically mispositioned in the lateral coordinate and the ver...

Cinematography relies on a rich vocabulary of shots and framing parameters to communicate narrative event structures. This cinematic vocabulary stems from the physical capabilities of camera movement and uses aesthetic aspects to engage the audience and influence audience comprehension. At present, automatic physical camera control is limited in cinematic vocabulary. Virtual cameras, on the oth...

Using a time-gated dual quadrature spectral interferometry technique, for the first time we demonstrate single-shot characterization of both spectral amplitude and phase of approximately 1THz bandwidth optical arbitrary waveforms generated from a 10 GHz frequency comb. Our measurements provide a temporal resolution of 1ps over a record length of 100ps. Singleshot characterization becomes partic...

This study compares the processing of causal and diagnostic uses of the connective so. In an experiment measuring reading times, it is shown that diagnostic so constructions, (e.g. Carl has been limping lately. So he was injured in the accident.) take longer to read than causal ones (e.g. Carl didn’t wear his seatbelt. So he was injured in the accident.). This difference is reduced in parallel ...

Wave-equation based shot-record migration provides accurate images but is computationally expensive because every shot must be migrated separately. Shot-encoding migration, such as random shot-encoding or plane-wave migration, aims to reduce the computational cost of the imaging process by combining the original data into synthesized common-source gathers. Random shot-encoding migration and pla...

Single-Shot Fault-Tolerant Quantum Error Correction Bombin Palomo, Hector Published in: Physical Review X DOI: 10.1103/PhysRevX.5.031043 Publication date: 2015 Document Version Publisher's PDF, also known as Version of record Citation for published version (APA): Bombin Palomo, H. (2015). Single-Shot Fault-Tolerant Quantum Error Correction. Physical Review X, 5(3), [031043]. DOI: 10.1103/PhysRe...

We present results of 3D numerical modeling using a series of simple point scatterers to create synthetic seismic shot records collected over regular, discrete, vertical fracture systems. The background medium is taken to be constant velocity. The model contains a series of point scatterers delineating the top tip and bottom tip of each vertical fracture. We use these results to gain an underst...

Several methods are now available for single-shot measurement of the complex field (amplitude and phase profiles) of optical waveforms with resolutions down to the sub-picosecond range. As a main critical limitation, all these techniques exhibit measurement update rates typically slower than a few Hz. It would be very challenging to directly upgrade the update rate of any of these available met...