Results 1 to 10 of about 3,992 (113)

Transparent Topological Meta-Diplexer via Tightly Confined Valley Surface States. [PDF]

Adv Sci (Weinh)
An optically transparent topological metasurface supporting tightly confined valley surface states enables robust and flexible wave routing in an ultrathin platform. A compact transparent meta‐diplexer with spatially and spectrally separated channels is realized, while communication experiments verify high‐fidelity signal transmission, opening new ...
Li S, Li P, Lan Z, Li Y, Wong H, Chen MLN.   +5 more
europepmc   +2 more sources

Kaempferol-modified mesenchymal stem cell extracellular vesicle-mimetics promote photoaging repair by suppressing ADAM10. [PDF]

Cell Commun Signal
Chronic ultraviolet B (UVB) exposure accelerates skin photoaging by inducing excessive reactive oxygen species (ROS), inflammation, and extensive extracellular matrix (ECM) degradation.
Fu N, Zhang H, Shi X, Xiao X, Li X, Song P, Wang S, Zhao RC.   +7 more
europepmc   +2 more sources

General Voting System for Democratic Countries Using Blockchain and Computer Technology

International Journal of Emerging Research in Engineering, Science, and Management, 2023
Secret voting in democratic countries using computational intelligence and Blockchain Technology, the vote is a fundamental right in democracy to elect people’s representatives at various levels. Manual voting is tedious and error prone. E-voting systems
Vandanababu Talakayala, Prashant Dahiwale, Sanjay Mate   +2 more
doaj   +1 more source

Linear Regression vs. Deep Learning for Signal Quality Monitoring in Coherent Optical Systems

IEEE Photonics Journal, 2022
Error vector magnitude (EVM) is a metric for assessing the quality of m-ary quadrature amplitude modulation (mQAM) signals. Recently proposed deep learning techniques, e.g., feedforward neural networks (FFNNs) -based EVM estimation scheme leverage fast ...
Yuchuan Fan, Xiaodan Pang, Aleksejs Udalcovs, Carlos Natalino, Lu Zhang, Sandis Spolitis, Vjaceslavs Bobrovs, Richard Schatz, Xianbin Yu, Marija Furdek, Sergei Popov, Oskars Ozolins   +11 more
doaj   +1 more source

Experimental Evaluation of Transmitted Signal Distortion Caused by Power Allocation in Inter-Cell Interference Coordination Techniques for LTE/LTE-A and 5G Systems

IEEE Access, 2022
Error vector magnitude (EVM) and out-of-band emissions are key metrics for evaluating in-band and out-band distortions introduced by all potential non-idealities in the transmitters of wireless systems. As EVM is a measure of the quality of the modulated
Angela Hernandez-Solana, Paloma Garcia-Ducar, Antonio Valdovinos, Juan Ernesto Garcia, Jesus De Mingo, Pedro Luis Carro   +5 more
doaj   +1 more source

Interpretive structural modeling in Earned Value Management

Journal of Civil Engineering and Management, 2020
The primary purpose of the current study is introducing a comprehensive approach to identify the relationship among different criteria in Earned Value Management (EVM).
Morteza Bagherpour, Mohammad Khaje Zadeh, Amin Mahmoudi, Xiaopeng Deng   +3 more
doaj   +1 more source

Performance Investigation of Peak Shrinking and Interpolating the PAPR Reduction Technique for LTE-Advance and 5G Signals

Information, 2019
Orthogonal frequency division multiplexing (OFDM) has become an indispensable part of waveform generation in wideband digital communication since its first appearance in digital audio broadcasting (DAB) in Europe in 1980s, and it is indeed in use. As has
Somayeh Mohammady, Ronan Farrell, David Malone, John Dooley   +3 more
doaj   +1 more source

Purposeful Suppression and Reconstruction of White Light from LED for Improvement of Communication Properties

Advances in Electrical and Electronic Engineering, 2019
Visible Light Communication (VLC) technology uses white Light Emitting Diodes (LED) for providing illumination and communication at the same time. White LEDs have excellent illumination properties but their communication properties need improvement. This
Jan Vitasek, Jan Latal, Tomas Stratil, Stanislav Hejduk, Ales Vanderka, Lukas Hajek, Jakub Kolar   +6 more
doaj   +1 more source

A Novel Direct-Binary Amplitude Modulator Integrated with a 16-Times Frequency Multiplier for 5G+ Applications [PDF]

Journal of Electromagnetic Engineering and Science
This article presents a novel passive direct binary amplitude modulator (AM) integrated with two frequency multipliers (FMs) and a drive amplifier. Both FMs are composed of a harmonic generator and a modified cascode buffer, along with an additional ...
Kyu-Hyun Nam, Nam-Pyo Hong, Jun-Seok Park   +2 more
doaj   +1 more source

EVM: An Educational Virtual Reality Modeling Tool; Evaluation Study with Freshman Engineering Students

Applied Sciences, 2021
Educational Virtual Modeling (EVM) is a novel VR-based application for sketching and modeling in an immersive environment designed to introduce freshman engineering students to modeling concepts and reinforce their understanding of the spatial connection
Julián Conesa-Pastor, Manuel Contero
doaj   +1 more source