A comb-type floating breakwater is a new wave dissipation structure with particular force and performance advantages due to the two wave-reflecting surfaces. In this article, physical model experiments are used study hydrodynamic characteristics of fixed comb structural optimization-based measures under combined action regular waves, irregular currents. The effects factors such as relative widt...

There is always a need to analyze current signals generated by various DC–DC converters. For example, determine the stress experienced semiconductor devices and evaluate active reactive power consumption in The study demonstrates that shape of signal dictates analytical expressions required average RMS values as well value ripple signal. also shows can be treated composite waveforms comprising ...

Time-domain metrics are used to investigate the nonlinearity of the sound in the vicinity of the F-35 AA-1. The first measure considered is the average steepening factor (ASF), which we define as the inverse of the wave steepening factor and is a ratio of the expectation value of the positive slopes in the waveform to the expectation value of the negative slopes. The second nonlinearity metric ...

We report on an asymmetric high energy dual optical parametric amplifier (OPA) which is capable of having either the idlers, signals, or depleted pumps, relatively phase locked at commensurate incommensurate wavelengths. Idlers and signals can be order 200 mrad rms better, corresponding to a 212 as jitter λ =2 µ m. The arm OPA outputs combined 3.5 mJ signal idler, while low 1.5 mJ, with entire ...

3 Wallpaper groups 8 3.1 A few new concepts for Wallpaper Groups . . . . . . . . . . . . . . . . . . . . . . . 8 3.2 Lattices and the “translation set” . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 Bravais lattices in 2D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3.1 Oblique system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

We have studied space-charge-induced optical nonlinearities for asymmetric coupled quantum wells. By the spatial separation of heavy holes and electrons, an electrostatic potential is induced which increases the fundamental bandgap. Calculations, using the Hartree approximation, for oqtimi5ed AlGaAs structures show that a blue-shift of the band gap of 9 meV at a carrier density of 10 * cm can b...