Results 91 to 100 of about 392,818 (294)

Triboelectric nanogenerators for vehicle intelligent cockpits

open access: yesFlexMat, EarlyView.
Converting mechanical stimuli from drivers and vehicle motion into electrical signals, triboelectric nanogenerators provide promising interfaces toward passive, flexible, distributed and intelligent sensing for next‐generation automotive cockpits to support three core functional dimensions: driver state monitoring, vehicle state monitoring, and human ...
Haiqiu Tan   +9 more
wiley   +1 more source

Analysis of Signal Attenuation in UHF Band

open access: yesAdvances in Electrical and Electronic Engineering, 2015
This paper deals with signal attenuation in ultra-high-frequency bands caused by rain. We focus mainly on the effect of the rain on the radio waves propagation in the frequency band 2.1 GHz. Two exact approaches for investigating this dependency are used.
Libor Michalek   +4 more
doaj   +1 more source

Rain rate statistical conversion for the predictionof rain attenuation in Malaysia

open access: yesElectronics Letters, 1999
The transformation of hourly rain rate data into equivalent one-minute statistics is very useful for microwave systems designers since the hourly rainfall data are more abundant and can be obtained at many locations. An empirical model is proposed for approximating the rain rate conversion factor from 1 h to 1 min integration time in Malaysia.
J. Chebil, T.A. Rahman
openaire   +1 more source

Modelling of rain rate gain to mitigate rain fades for satellite links design

open access: yes, 2020
Rain attenuation is an important propagation impairments causes by troposphere which degrades the performance of Earth space communication links operating above 10 GHz frequencies.
Alam, Md Moktarul   +3 more
core  

Creation of a Landslide Susceptibility Map Using Short‐Term Data From the July 2018 Heavy Rainfall in Southern Hiroshima Prefecture

open access: yesGeological Journal, EarlyView.
This work advances landslide susceptibility mapping by incorporating short‐term trigger data with landscape susceptibility mapping. We also examine the importance of downsampling, watershed delineation and geospatial correlations in evaluating outcomes.
Kanta Kotsugi   +3 more
wiley   +1 more source

Green water, wetlands, and atmospheric moisture recycling ‐ An emerging new paradigm for grassland science

open access: yesGrassland Research, EarlyView.
The importance of green water in water resource management. Conceptual classification of terrestrial water components highlighting the central role of green water in land‐atmosphere interactions. This schematic distinguishes green water (soil moisture available for plant uptake and evapotranspiration) from blue water (surface water, groundwater, and ...
Khadija Javed   +2 more
wiley   +1 more source

Rain attenuation analysis using synthetic storm technique in Malaysia

open access: yes, 2013
Generated rain attenuation time series plays an important role for investigating the rain fade characteristics in the lack of real fade measurements.
Zyoud, Al-Hareth   +6 more
core   +2 more sources

Analysis of Radiative Transfer Characteristics of a Spherical Continuous-Spectrum Light Source Under Rainfall Conditions

open access: yesPhotonics
The current research on light transmission under rainfall conditions primarily focuses on monochromatic converging light sources, and the related conclusions cannot be directly applied to spherical continuous-spectrum light sources (SCLSs).
Zhenfeng Li   +4 more
doaj   +1 more source

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

open access: yesInfoMat, EarlyView.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao   +12 more
wiley   +1 more source

Analysis of Cross-Polarization Discrimination Due to Rain for Earth–Space Satellite Links Operating at Millimetre-Wave Frequencies in Pretoria, South Africa

open access: yesAtmosphere
This study investigates the impact of rain-induced attenuation on cross-polarization discrimination (XPD) in Earth–space satellite links operating at millimeter-wave frequencies in Pretoria, South Africa. The traditional method of computing XPD employs a
Yusuf Babatunde Lawal   +4 more
doaj   +1 more source

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