Results 21 to 30 of about 815,118 (313)

Data Transmission Reduction in Wireless Sensor Network for Spatial Event Detection

open access: yesSensors, 2021
Wireless sensor networks have found many applications in detecting events such as security threats, natural hazards, or technical malfunctions. An essential requirement for event detection systems is the long lifetime of battery-powered sensor nodes ...
Marcin Lewandowski, Bartłomiej Płaczek
doaj   +1 more source

Effects of Substitution Position of Carbazole-Dibenzofuran Based High Triplet Energy Hosts to Device Stability of Blue Phosphorescent Organic Light-Emitting Diodes

open access: yesMolecules, 2021
High triplet energy hosts were developed through the modification of the substitution position of carbazole units. Two carbazole-dibenzofuran-derived compounds, 9,9′-(dibenzo[b,d]furan-2,6-diyl)bis(9H-carbazole) (26CzDBF) and 4,6-di(9H-carbazol-9-yl ...
Kyung Hyun Choi   +3 more
doaj   +1 more source

On Uncertain Lifetimes [PDF]

open access: yesJournal of Political Economy, 1977
This paper contrasts consumer choice under uncertain lifetimes with the behavior that would arise if each individual's lifetime were announced at birth. In a model that includes life insurance and excludes investments in human capital, the expected utility under uncertain lifetimes exceeds that under known lifetimes when the latter expectation is based
Barro, Robert, Friedman, James W.
openaire   +4 more sources

Lithium-Ion Capacitor Lifetime Extension through an Optimal Thermal Management System for Smart Grid Applications

open access: yesEnergies, 2021
A lithium-ion capacitor (LiC) is one of the most promising technologies for grid applications, which combines the energy storage mechanism of an electric double-layer capacitor (EDLC) and a lithium-ion battery (LiB).
Danial Karimi   +7 more
doaj   +1 more source

Advances in Perovskite Light-Emitting Diodes Possessing Improved Lifetime

open access: yesNanomaterials, 2021
Recently, perovskite light-emitting diodes (PeLEDs) are seeing an increasing academic and industrial interest with a potential for a broad range of technologies including display, lighting, and signaling. The maximum external quantum efficiency of PeLEDs
Peng Xiao   +7 more
doaj   +1 more source

Impact of Cladding Technology on Residual Stresses within the Renovation of High Pressure Die Casting Molds

open access: yesMetals, 2022
Residual stresses significantly affect the overall lifetime of constructions. The main disadvantage of residual stresses is that their effect and magnitude is not evident at first sight and can only be reliably determined using experimental methods.
Patrik Šarga   +4 more
doaj   +1 more source

Monthly variation and spatial distribution of quadrant tropical cyclone size in the Western North Pacific

open access: yesAtmospheric Science Letters, 2020
With the tropical cyclone (TC) size parameter defined as the radius of 17‐m·s−1 oceanic surface wind, 225 TC cases were recorded in the western North Pacific during 2000–2009 based on the QuikSCAT near‐surface wind vector database and the best‐track ...
Wei Hong   +4 more
doaj   +1 more source

A New Concept of Sustainable Wind Turbine Blades: Bio-Inspired Design with Engineered Adhesives

open access: yesBiomimetics, 2023
In this paper, a new concept of extra-durable and sustainable wind turbine blades is presented. The two critical materials science challenges of the development of wind energy now are the necessity to prevent the degradation of wind turbine blades for ...
Leon Mishnaevsky   +3 more
doaj   +1 more source

Magnetic skyrmion annihilation by quantum mechanical tunneling

open access: yesNew Journal of Physics, 2020
Magnetic skyrmions are nano-scale magnetic states that could be used in various spintronics devices. A central issue is the mechanism and rate of various possible annihilation processes and the lifetime of metastable skyrmions.
Sergei M Vlasov   +5 more
doaj   +1 more source

Streamlining admission with LOR insights: AI-Based leadership assessment in online master’s program

open access: yesDiscover Artificial Intelligence
Letters of recommendation (LORs) provide valuable insights into candidates' capabilities and experiences beyond standardized test scores. However, reviewing these text-heavy materials is time-consuming and labor-intensive.
Meryem Yilmaz Soylu   +5 more
doaj   +1 more source

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