Energy spread distributions due to electronic energy-loss straggling and multiple small-angle scattering of swift ions in matter are approximated by asymmetric Gaussian functions consisting of two-piece normal distributions. These skewed energy distributions approximate the distributions more accurately than the conventional approximation by Gaussian functions. The results are compared to exper...

Distributed training of deep learning models on large-scale training data is typically conducted with asynchronous stochastic optimization to maximize the rate of updates, at the cost of additional noise introduced from asynchrony. In contrast, the synchronous approach is often thought to be impractical due to idle time wasted on waiting for straggling workers. We revisit these conventional bel...

We perform a calculation of the nuclear recoil ionization efficiency in silicon using an improved version Lindhard's theory, which atomic bond breaking is modeled as function initial ionic energy, interatomic potential, and average energy for ion-vacancy pair production. Better descriptions effects due to electronic stopping straggling, charge screening, Coulomb repulsion between ions are also ...

Department 0,( Physics, Berea College, Berea, Kentucky 40403 t;,.. (Received 29 August 1968; revised manuscript received 23 January 1969) " , j The theory of energ}. straggling attempts to calculate F(E,S), where F(E,S)dli is the fraction of the heavy i charged particles which have an energy bet\veen II: and I:'+dl:: after a path length S has been traversed in 1 absorbing medium. This paper dev...

The uplink of a cloud radio access network (C-RAN) architecture is studied in which decoding at the cloud takes place via Network Function Virtualization (NFV) on commercial offthe-shelf (COTS) servers. In order to mitigate the impact of straggling decoders in the cloud computing platform, a novel coding strategy is proposed, whereby the cloud re-encodes the received frames via a linear code be...

Ion beam transport theory allows testing of material transmission properties in the laboratory environment generated by particle accelerators. This is a necessary step in materials development and evaluation for space use. The approximations used in solving the Boltzmann transport equation for the space setting are often not sufficient for laboratory work and those issues are the main emphasis ...

Measurement of the direction of the elastic nuclear recoil track and ionization charge distribution along it, gives unique possibility for unambiguous detection of the dark matter WIMP particle. Within current radiation detection technologies only Time Projection Chambers filled with low pressure gas are capable of such measurement. Due to the character of the electronic and nuclear stopping po...