Results 51 to 60 of about 214,860 (277)
To Stay Or To Switch: Multiuser Dynamic Channel Access
, 2013 In this paper we study opportunistic spectrum access (OSA) policies in a multiuser multichannel random access cognitive radio network, where users perform channel probing and switching in order to obtain better channel condition or higher instantaneous ...
Liu, Mingyan, Liu, Yang
core +1 more source
Wireless Information and Power Transfer With Full Duplex Relaying [PDF]
, 2014 We consider a dual-hop full-duplex relaying system, where the energy constrained relay node is powered by radio frequency signals from the source using the time-switching architecture, both the amplify-and-forward and decode-and-forward relaying ...
Krikidis, Ioannis +4 more
core +2 more sources
Full-Duplex MIMO Relaying Powered by Wireless Energy Transfer
, 2015 We consider a full-duplex decode-and-forward system, where the wirelessly powered relay employs the time-switching protocol to receive power from the source and then transmit information to the destination.
Krikidis, Ioannis +4 more
core +1 more source
Applied Sciences, 2023 This paper presents the design and optimization of a dual-band polarization-dependent metasurface capable of dynamically switching transmission and reflection characteristics.
Ashfaq Ahmad, Jawad Ali, Dong-You Choi
doaj +1 more source
Energy savings using an adaptive base station-to-relay station switching paradigm [PDF]
, 2012 Applying a Base Station (BS) sleep approach during low traffic periods has recently been advocated as a strategy for reducing energy consumption in cellular networks. The complete switching off of certain BS however, can lead to coverage holes and severe
Alam, Atm Shafiul +3 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao +6 more
wiley +1 more source
Improved Self-Excited Resonant Wireless Power Transmission System
Shanghai Jiaotong Daxue xuebao, 2023 Aimed at the main power tube with problems of weak driving ability, poor soft switching performance, and large switching loss in a self-excited resonant wireless power transmission (WPT) system, an analysis of the working principle of resonant main ...
ZHAO Zhibin, LUO Bin, TANG Ting, WANG Chunfang, SUN Zhonghua
doaj +1 more source
An Energy Efficient Semi-static Power Control and Link Adaptation Scheme in UMTS HSDPA [PDF]
, 2012 High speed downlink packet access (HSDPA) has been successfully applied in commercial systems and improves user experience significantly. However, it incurs substantial energy consumption.
Huang, Yi, Qiu, Ling, Xu, Jie
core +2 more sources
β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations
Advanced Biology, Volume 9, Issue 3, March 2025.Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio +11 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera +8 more
wiley +1 more source