In this paper, we explore the impacts of utilizing intelligent reflecting surfaces (IRS) in a power-splitting based simultaneous wireless information and power transfer (PS-SWIPT) system and compare its performance with the traditional decode and forward relaying system. To analyze a more practical system, it is also assumed that the receiving nodes are subject to decoding cost, and they are on...

the compact finite difference schemes have been found to give simple ways of reaching the objectives of high accuracy and low computational cost. during the past two decades, the compact schemes have been used extensively for numerical simulation of various fluid dynamics problems. these methods have also been applied for numerical solution of some prototype geophysical fluid dynamics problems ...

For cluster video servers, it is very important to design a good distributed storage system with high performance. One of the important issues in designing a good distributed storage system is how to store multimedia data on many storage nodes. This issue includes two topics: the scheme of splitting an entire file into many clips, and the storage of these clips on many nodes. We have designed a...

We present a time-splitting spectral scheme for the Maxwell–Dirac system and similar time-splitting methods for the corresponding asymptotic problems in the semi-classical and the non-relativistic regimes. The scheme for the Maxwell– Dirac system conserves the Lorentz gauge condition is unconditionally stable and highly efficient as our numerical examples show. In particular, we focus in our ex...

Quantum-classical molecular dynamics, as a partial classical limit of the full quantum Schrödinger equation, is widely used framework for dynamics. The underlying equations are nonlinear in nature, containing part (representing electrons) and (standing nuclei). An accurate simulation wave function typically requires time step comparable to rescaled Planck constant , resulting formidable cost wh...