During the last few years, the steady increase in the quantity and quality of the data concerning tsunamis has led to an increasing interest in the inversion problem for tsunami data. This work addresses the usually ill-posed problem of the hydrodynamical inversion of tsunami tide-gage records to infer the initial sea perturbation. We use an inversion method for which the data space consists of...

To realize spin wave logic gates programmable phase inverters are essential. We image with phase-resolved Brillouin light scattering microscopy propagating waves in a one-dimensional magnonic crystal consisting of dipolarly coupled magnetic nanostripes. demonstrate shifts upon single nanostripe opposed magnetization. Using micromagnetic simulations we model our experimental finding wide paramet...

Seismic waveform inversion aims at obtaining detailed estimates of subsurface medium parameters, such as the spatial distribution of soundspeed, from multi-experiment seismic data. A formulation of this inverse problem in the frequency-domain leads to an optimization problem constrained by a Helmholtz equation with many right-hand-sides. Application of this technique to industry-scale problem f...

Recently it has been shown that by exploiting the fading properties of the wireless environment, a communication structure with multiple transmit/receive antennas can deliver enormous capacities [1]. Several architectures have been proposed to implement space-time systems for the narrowband flat fading wireless environment [2,3]. However, in order to support higher data rates, the concept of sp...

the direct way to access the petrophysical property of hydrocarbon reservoir is based on well data but due to its high cost, the seismic data has been used to obtain these parameters. for this purpose, many different methods are available and each has its own advantages and limitations. from these methods the seismic inversion is the best tool to study the reservoir characterization. the outcom...