We perform a two-dimensional inversion of f-mode travel times to determine near-surface solar flows. The inversion is based on optimally localized averaging of travel times. We use finite-wavelength travel-time sensitivity functions and a realistic model of the data errors. We find that it is possible to obtain a spatial resolution of 2 Mm. The error in the resulting flow estimate ultimately de...

The estimation of subsurface properties of the earth by use of observed geophysical data is identified as “geophysical inversion”, and can be defined to include nearly everything that geophysicists do. As we approach the new millennium, it is interesting to contrast past and present inversion methods with possibilities for the future. Although the earliest inversions were done entirely within t...

The microwave spectrum of y-thiobutyrolactone has been reinvestigated using microwave Fourier transform spectroscopy. The /ic rotation inversion transitions have been found to be splitted for the first excited state of the vibration at ~ 250 c m 1 . An inversion splitting of 0.014 MHz has been measured directly from these transitions. These splittings indicate that the vibration is related to a...

The manipulation of topologically protected field configurations, already predicted and experimentally observed in non-centrosymmetric magnets, as skyrmions, merons antimerons could definitely have potential applications logic gate operations carriers information. Here, we present elaborate a proof concept on how to construct three-input non-canonical majority kagome ferromagnet lacking inversi...

Two dimensional (2D) numerical simulation of low-frequency (1/f) noise is carried out in N-channel polysilicon thin film transistors biased from weak to strong inversion. Noise is simulated by Generation-Recombination processes. Simulation is based on the impedance field method of Shockley. A 2D analysis of the local noise level shows that contribution at grain boundaries dominates from weak to...