In this study, three robust predicting methods, namely artificial neural network (ANN), adaptive neuro fuzzy inference system (ANFIS) and support vector machine (SVM) were used for computing the resonant frequency of A-shaped compact microstrip antennas (ACMAs) operating at UHF band. Firstly, the resonant frequencies of 144 ACMAs with various dimensions and electrical parameters were simulated ...

Taking into account the stringent limits from helioseismology observations on possible matter density uctuations described by magnetohydrodynamics theory, we nd the corresponding time variations of solar neutrino survival probability due to the resonant spinavor precession phenomenon with amplitude of order O(10%). We discuss the physics potential of high statistics real time experiments, like ...

We investigate the orbital history of the small neptunian satellites discovered by Voyager 2. Over the age of the Solar System, tidal forces have caused the satellites to migrate radially, bringing them through mean-motion resonances with one another. In this paper, we extend our study of the largest satellites Proteus and Larissa [Zhang, K., Hamilton, D.P., 2007. Icarus 188, 386–399] by adding...

Using a single trapped barium ion we have developed an rf spectroscopy technique to measure the ratio of the off-resonant vector ac Stark effect (or light shift) in the 6S1/2 and 5D3/2 states to 0.1% precision. We find R ≡ ∆S/∆D = −11.494(13) at 514.531 nm where ∆S,D are the light shifts of the m = ±1/2 splittings due to circularly polarized light. Comparison of this result with an ab initio ca...

Taking into account the stringent limits from helioseismology observations on possible matter density fluctuations described by magnetohydrodynamics theory, we find the corresponding time variations of solar neutrino survival probability due to the resonant spin-flavor precession phenomenon with amplitude of order O(10%). We discuss the physics potential of high statistics real time experiments...

in this article, the effect of cells' radius on the behavior of wavelength switching optical filter andthe effect of the radius of the optical filters' key characteristics such as wavelength resonance onan optical filter based on photonic crystals, have been investigated. currently, the most commonapplied mechanism for designing optical filter based on photonic crystals is using twome...

This work presents a novel highly efficient and low-stress battery charger with a resonant switch converter— based on resonance and zero-voltage-transition soft-switching theory—that reduces defects associated with high voltage and high current stresses caused by the resonance of traditional resonant circuits. The novel battery charger meets the requirement that all circuit components must oper...

The resonant frequency and sensitivity of an atomic force microscope (AFM) cantilever with assembled cantilever probe (ACP) have been analyzed and a closed-form expression for the sensitivity of vibration modes has been obtained. The proposed ACP comprises an inclined cantilever and extension, and a tip located at the free end of the extension, which makes the AFM capable of topography at sidew...

Foam concrete is a cellular material mainly used in construction. Because of the low-strength feature foam concrete, conventional testing methods such as strength measurement are insufficient to characterize key attributes especially for low-density that commonly designed functional purposes. Inspired by nondestructive resonant frequency test, this study investigates feasibility using method ev...