Results 1 to 10 of about 29,686 (147)

Monitoring of environmental gases and calf health in Italian Mediterranean buffalo herd

open access: yesRevista Científica, 2023
In buffalo breeding, calves require special attention and housing systems that provide thermal comfort, good air quality, brightness, and adequate space.
Simona Leonetti   +4 more
doaj   +1 more source

RIS-Assisted Green Secure Communications: Active RIS or Passive RIS?

open access: yesIEEE Wireless Communications Letters, 2023
Reconfigurable Intelligent Surface (RIS) is one of the promising techniques for 6G wireless communications, and recently has also been shown to be able to improve secure communications. However, there is a "double fading" effect in the reflection link between base station and user, thus passive RIS only achieves a negligible secrecy gain in typical ...
Weigang Lv   +3 more
openaire   +2 more sources

Research on the Rate of Devices-to-Devices Communication System based on Reconfigurable Intelligent Surface

open access: yesGuangtongxin yanjiu, 2022
There are problems of interference between Devices-to-Devices (D2D) communication users and cellular users, mutual interference between D2D communication users, and environmental interference caused by the existence of environmental obstacles in the D2D ...
Feng-ting FU, Li LI, Jing ZHANG
doaj   +1 more source

A silver bullet? The role of radiology information system data mining in defining gunshot injury trends at a South African tertiary-level hospital

open access: yesSouth African Journal of Radiology, 2021
Background: South Africa (SA) has no national injury surveillance system, and hence, non-fatal gunshot injuries are not routinely recorded. Most firearm-related injuries require multi-detector computer tomography (MDCT) assessment at a tertiary-level ...
Dale K. Creamer   +3 more
doaj   +1 more source

Postintensjonal moralsk vilkårlighet

open access: yesNorsk Filosofisk Tidsskrift, 2020
Sammendrag Jeg har kalt artikkelen «Postintensjonal moralsk vilkårlighet». Tematikken står sentralt i en rekke filosofiske artikler på engelsk, sentrert omkring begrepet «moral luck».
Erik Brown
doaj   +1 more source

Space Shift Keying With Reconfigurable Intelligent Surfaces: Phase Configuration Designs and Performance Analysis

open access: yesIEEE Open Journal of the Communications Society, 2021
Reconfigurable intelligent surface (RIS)-assisted transmission and space shift keying (SSK) appear as promising candidates for future energy-efficient wireless systems.
Qiang Li   +4 more
doaj   +1 more source

Reconfigurable Intelligent Surface Enabled Spatial Modulation for Visible Light Communications

open access: yesIEEE Photonics Journal, 2023
An important issue in visible light communications (VLC) is how to boost up the system throughput even when the line-of-sight (LOS) link is blocked by obstacles. In this paper, we propose reconfigurable intelligent surface (RIS) based spatial modulation (
Pengfei Shen, Lu Lu
doaj   +1 more source

Frequency Stability of Power System with Large Share of Wind Power Under Storm Conditions

open access: yesJournal of Modern Power Systems and Clean Energy, 2020
The operation of transmission systems with large share of wind power is specially challenging under storm conditions. Under the stormy wind speed conditions, wind turbine protection system is designed to shut down the turbine to avoid excessive ...
Kaushik Das   +3 more
doaj   +1 more source

Energy Efficiency of Unmanned Aerial Vehicle with Reconfigurable Intelligent Surfaces: A Comparative Study

open access: yesDrones, 2023
Unmanned aerial vehicles (UAVs) and reconfigurable intelligent surfaces (RIS) are the promising emerging technologies proposed for the 6th-Generation (6G) network to improve the capacity, reliability, and coverage of wireless communications.
Chi Yen Goh   +2 more
doaj   +1 more source

Cloud computing for radiologists

open access: yesIndian Journal of Radiology and Imaging, 2012
Cloud computing is a concept wherein a computer grid is created using the Internet with the sole purpose of utilizing shared resources such as computer software, hardware, on a pay-per-use model.
Amit T Kharat   +3 more
doaj   +1 more source

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