Results 31 to 40 of about 231,657 (285)

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

open access: yesAdvanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz   +9 more
wiley   +1 more source

New Infeed Correction Methods for Distance Protection in Distribution Systems

open access: yesEnergies, 2021
The reliability and security of power systems may be jeopardized by the increase in the amounts of renewable generation and the uncertainties produced by these devices.
Fahd Hariri, Mariesa Crow
doaj   +1 more source

Performance Analysis of Two-Hop Cooperative MIMO transmission with Relay Selection in Rayleigh Fading Channel

open access: yes, 2009
Wireless relaying is one of the promising solutions to overcome the channel impairments and provide high data rate coverage that appears for beyond 3G mobile communications.
Kabir, Humaun   +4 more
core   +1 more source

H2-ARQ-relaying: spectrum and energy efficiency perspectives [PDF]

open access: yes, 2011
In this paper, we propose novel Hybrid Automatic Repeat re-Quest (HARQ) strategies used in conjunction with hybrid relaying schemes, named as H2-ARQ-Relaying.
Hoshyar, Reza   +3 more
core   +2 more sources

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

open access: yesAdvanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu   +18 more
wiley   +1 more source

Maloperation of Zone-3 Distance Relay Prevention Using Distribution Entropy

open access: yesIEEE Access
Maloperation of third-zone distance relays is predominantly caused by power swings, load encroachment, and voltage instability events. Another possibility for third-zone distance relay maloperation is a delayed voltage recovery event.
Upendran Mukundarajan, K. Shanti Swarup
doaj   +1 more source

Optimization model for array deployment of marine communication relay platform [PDF]

open access: yesZhihui kongzhi yu fangzhen
Aiming at the comprehensive application of marine relay equipment, combined with the maximum communication distance and target threat distribution and other conditions, this paper proposes an programming model to solve the optimal deployment of ...
HE Wei, WANG Fan, ZHANG Yongsheng
doaj   +1 more source

Delay-aware relay node selection for cluster-based wireless sensor networks

open access: yesMeasurement: Sensors, 2022
Maximizing the network lifetime through balancing energy and lowering the delay is a primary design goal of wireless sensor networks (WSNs). In WSNs, the sensor nodes task is to acquire the data from the area or point of interest and transmit it to the ...
P. Suman Prakash   +2 more
doaj   +1 more source

An overview of out-of-step protection in power systems [PDF]

open access: yes, 2017
Power system is subjected to an extensive variety of little or bigger disturbance to the system during the operation. The power system that designed as one of the main requirement is to survive from the larger type of disturbances like faults.
Chin, Wan Ling   +5 more
core  

Improved Approximation Algorithms for Relay Placement

open access: yes, 2015
In the relay placement problem the input is a set of sensors and a number $r \ge 1$, the communication range of a relay. In the one-tier version of the problem the objective is to place a minimum number of relays so that between every pair of sensors ...
Efrat, Alon   +4 more
core   +1 more source

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