We present twoand three-dimensional simulations of convective instabilities during the first second of a Type II supernova explosion. Convective overturn occurs in two distinct, spatially well separated regions: (i) inside the proto-neutron star immediately below the neutrinosphere (r < 50 km) and (ii) in the neutrino-heated “hot-bubble” region interior to the outward propagating revived shock ...

We present variants of both the digital curvelet transform, and the digital wave atom transform, which handle the image boundaries by mirror extension. Previous versions of these transforms treated image boundaries by periodization. The main ideas of the modifications are 1) to tile the discrete cosine domain instead of the discrete Fourier domain, and 2) to adequately reorganize the in-tile da...

The Gross-Pitaevskii equation (GPE), that describes the wave function of a number of coherent Bose particles contained in a trap, contains the cube of the normalized wave function, times a factor proportional to the number of coherent atoms. The square of the wave function, times the above mentioned factor, is defined as the Hartree potential. A method implemented here for the numerical solutio...

Multiple-wave Diffraction Anomalous Fine Structure (MDAFS), a new method combining the X-ray multiple-wave diffraction with diffraction anomalous fine structure (DAFS) technique, provides the long-range order structure information by measuring the multiple-wave diffraction profiles in the vicinity of an absorption edge. The real part of dispersion correction and fine structure function can be o...

the goal of this laboratory study is to investigate the effect of pore shapes on seismic wave velocities in carbonate rocks under reservoir conditions. in this research, 41 core plugs of carbonate rocks from oil fields of the southwest of iran were prepared. the compressional and shear wave velocities were measured in both dry and brine saturated samples under several pressures especially reser...

Surface wave oscillator (SWO) is an intense subterahertz source based on the interaction of electron beam with a surface in cylindrical corrugated waveguide (CCW). The oversized factor key parameter SWO and ratio CCW diameter to wavelength generated wave. In this study, we experimentally examine 0.1 THz different factors 10 7. For 7, kilowatt class radiation maximum efficiency 8% observed. oper...

Wave-pipelining is a special pipelining technique used in digital system to achieve high throughput, with the use of gate capacitance as storage elements. An ideal system should have minimal delay variations amongst all paths. A dual-rail static CMOS (DRSCMOS) technique is presented for wave-pipelining. The availability of multi-functional basic building blocks and their low power consumption m...