The scattering of a scalar wave propagating in a waveguide containing weak penetrable scatterers is inspected in the Born approximation. The scatterers are of arbitrary shape and present a contrast both in density and in wavespeed (or bulk modulus), a situation that can be translated in the context of SH waves, water waves, or transverse electric/transverse magnetic polarized electromagnetic wa...

Introduction: Large-scale, extratropical weather disturbances (i.e., highand low-pressure systems or “transient synoptic-period baroclinic/barotropic waves”) are critical components of the global (i.e., general) circulation of a rapidly rotating, differentially heated, shallow atmosphere such as on Earth and Mars. Critically, these wave-like disturbances act as agents for the transport of heat ...

Aims. To explore the solar coronal heating enigma by an analytical and numerical study of the enhanced phase mixing of harmonic Alfvén waves propagating in gravitationally stratified coronal structures of varying magnetic field divergence. Methods. Corrected analytical solutions are derived to model the dissipation of Alfvén waves propagating in divergent and stratified coronal structures. Thes...

Deepwater field development requires drilling of deviated or horizontal wells. Most formations encountered can be highly anisotropic and Pand S-wave velocities vary with propagation directions. Sonic logs acquired in these wells need to be corrected before they can be applied in formation evaluation and seismic applications. In this study, we make use of a laboratory model made of an approximat...

Smart home (SH) products and services aim to enhance the comfort, convenience, security, entertainment, health, education and communication of tenants and their guests enabled by information technology platforms. Despite ongoing waves of enthusiasm, the SH market has remained a niche for more than three decades. At the same time, recent forecast expect the market to grow at high rates in the up...

We investigate the shear-horizontal surface acoustic waves ~SH-SAWs! generated on an AlN/Al2O3 microstructure by laser-micromachined grooves on the AlN film. In the absence of grooves, the AlN/Al2O3 device shows resonance for only a lower velocity SAW mode. However, when grooves of periodicity smaller than half the wavelength of the surface acoustic wave are micromachined, a higher velocity res...

A spherical antenna array (SAA) is an array-designed arrangement capable of scanning in almost all the radiation sphere with constant directivity. It finds recent applications aerospace, spacecraft, vehicular and satellite communications. Therefore, estimation direction-of-arrival (DoA) electromagnetic (EM) waves that impinge on SAA unknown mutual coupling called for research attention. This pa...

A principal component analysis (PCA) is applied to the Southern Hemisphere (SH) total column ozone following the method established for analyzing the data in the Northern Hemisphere (NH) in a companion paper. The interannual variability (IAV) of extratropical O3 in the SH is characterized by four main modes, which account for 75% of the total variance. The first two leading modes are approximat...

Structural health monitoring (SHM) is emerging as an essential tool for constant monitoring of safety-critical engineering components. Ultrasonic guided waves stand out because of their ability to propagate over long distances and because they can offer good estimates of location, severity, and type of damage. The unique properties of the fundamental shear horizontal guided wave (SH₀) mode have...

The threshold-ion-pair-production (TIPP) spectra of H2S and D2S have been recorded in the vicinity H++SH?[X1?+(v?=0,1;J?)] D++SD?[X1?+(v?=0,1;J?)] thresholds using a tunable vacuum-ultraviolet laser cold molecular samples (Trot?20K) supersonic expansions. ion-pair-production signal was found to be much stronger at v?=0 than v?=1 thresholds. From rotational structure spectra, dominant photodisso...