Molecular-orbital theory for the stopping power of atoms in the low velocity regime: the case of helium in alkali metals. Abstract A free-parameter linear-combination-of-atomic-orbitals approach is presented for analyzing the stopping power of slow ions moving in a metal. The method is applied to the case of He moving in alkali metals. Mean stopping powers for He present a good agreement with l...

A comprehensive analysis of the stopping power of antiprotons and negative muons in He and H2 gas targets for projectile velocities (equivalent antiproton energies) ranging from about 0.1 to 10 au (0.25 keV to 2.5 MeV) is performed. Recent experimental data are contrasted with theoretical results obtained from different approaches. The electronic stopping power is evaluated within the coupled-s...

Multi-arm group sequential clinical trials are efficient designs to compare multiple treatments to a control. They allow one to test for treatment effects already in interim analyses and can have a lower average sample number than fixed sample designs. Their operating characteristics depend on the stopping rule: We consider simultaneous stopping, where the whole trial is stopped as soon as for ...

this article is a comparative study of estimation power of artificial neural networks and autoregressive time series models in inflation forecasting. using 37 years iran’s inflation data, neural networks performs better on average for short horizons than autoregressive models. this study shows usefulness of early stopping technique in learning stage of neural networks for estimating time series...

The classical and quantum theories leading to the asymptotic Bethe formula of stopping power matter for charged particles heavier than electron are briefly reviewed. Models approximations practical calculation various corrections that extend validity range described. associated shell correction were determined previously from an extensive database atomic generalized oscillator strengths, calcul...