Reconfigurable Intelligent Surfaces here (RIS) have emerged as a promising technology for improving the reliability of massive MIMO communication networks.However, conventional RIS suffer from poor Spectral Efficiency (SE) and high energy consumption, leading to complex Hybrid Precoding (HP) designs.To address these issues, we propose a new low-com
ABSTRACT Introduction: Vaginal cuff recurrence of tumor following radical cystectomy is a rare site of disease recurrence, however it has never been specifically studied.The aim of the study is to evaluate incidence, risk factors, and long-term oncologic outcomes of vaginal cuff recur- rence in a cohort of female patients treated with radical cyste
Polar stratospheric clouds (PSCs) play a key role in polar ozone depletion.In the Arctic, PSCs can occur on the mesoscale due to orographically induced gravity waves.Here we present a detailed study of a mountain wave PSC event on 25-27 January 2000 over Scandinavia.The mountain wave PSCs were intensively observed by in-situ and remote-sensing tech
The microgrid (MG) technology integrates distributed generations, energy storage elements and loads.In this paper, dynamic performance enhancement of an MG consisting of wind turbine was investigated using permanent magnet synchronous generation (PMSG), photovoltaic (PV), microturbine generation (MTG) systems and flywheel under different circumstan
To investigate the effect of fissure penetration on the spalling process and features of rectangular tunnel sidewalls, true triaxial compression tests were conducted on cubic sandstone specimens with varying fissure penetration degrees.Acoustic emission monitoring and video equipment were used to record the failure process of the surrounding rock i