In continuation of earlier work on La(III), Ni(II) and Mn(II) halides, we present low frequency (30-400 cm(-1)) spectra of solvated HCl and HBr as a function of solute concentration. This frequency range provides direct access to water network modes and changes induced by solvated solutes. We were able to dissect the spectra into components associated to solvated ions and ion pairs using a chem...

Experiments on the radiation build-up process obtained using a prebunched e-beam free-electron maser at Tel-Aviv University (TAU) are compared to results of theoretical studies carried out at TAU and at the University of Maryland (UMD). Two computer codes were developed and employed for simulation of FEM operation. A non-linear three-dimensional “amplifier’ ’ code based on a coupled-mode approa...

In this paper, the author described examination results of interference suppression between mobile terminals using space diversity and Eigen-beamforming techniques for millimeter-wave full-duplex MIMO systems. The system studied a method simultaneously transmitting receiving signal on same frequency band in uplink downlink base station terminal. Applying technique to terminal when performing Ei...

Low-frequency oscillation (LFO) of the synchronous generators in power systems by wind is boring. To improve robustness damping control scheme, this paper applies sliding mode (SMC) at doubly fed induction generator (DFIG), with parameter SMC optimized eigen-sensitivity. The originalities lie in, (1) states strongly associated critical modes are newly applied to design surface, (2) closed-loop ...

Gas detection has become an indispensable part of the power equipment maintenance. Because many advantages, cantilever enhanced photoacoustic(PA) spectroscopy was studied by researchers. In this paper, with help Finite Element Method (FEM) simulations commercial software COMSOL, we have analyzed distribution sound pressure inside gas cell, in addition, relationship between Young's modulus and s...

The structure of the surface layers of the Sun is changed by magnetic activity which, in turn, changes the eigen-frequencies of the acoustic modes. These frequency shifts have been observed both in low-and high-degree data, and are found to be correlated with the solar cycle. Time-distance helioseismology has shown that waves travelling through sunspots suffer time delays. Also it is known that...

In ultrasound color flow imaging, the computation of flow estimates is well-recognized as a challenging problem from a signal processing perspective. The flow visualization performance of this imaging tool is often affected by error sources such as the lack of abundant signal samples available for processing, the presence of wideband clutter in the acquired signals, and the flow signal distorti...