Results 21 to 30 of about 427,874 (264)

ANALYSIS OF NONLINEAR FORCED VIBRATIONS OF FRACTIONALLY DAMPED SUSPENSION BRIDGES SUBJECTED TO THE ONE-TO-ONE INTERNAL RESONANCE

open access: yesInternational Journal for Computational Civil and Structural Engineering, 2020
Nonlinear force driven coupled vertical and torsional vibrations of suspension bridges, when the frequency of an external force is approaching one of the natural frequencies of the suspension system, which, in its turn, undergoes the conditions of the ...
Marina Shitikova, Aleks Katembo
doaj   +1 more source

Analytical and Experimental Studies of Double Elastic Steel Sheet (DESS) Vibration Energy Harvester System

open access: yesEnergies, 2020
This study provides a double elastic steel sheet (DESS) piezoelectric energy harvester system, in which the vibration generated by the deformation and clap of two elastic steel sheets is assisted by a piezo patch to generate electric energy.
Yi-Ren Wang, Ming-Syun Wong, Bo-Yan Chen
doaj   +1 more source

Analysis of a Wind-Driven Power Generation System with Root Slapping Mechanism

open access: yesApplied Sciences
This study introduces a groundbreaking slap-type Vibration Energy Harvesting (VEH) system, leveraging a rotating shaft with magnets to induce vibrations in an adjacent elastic steel sheet through magnetic repulsion.
Yi-Ren Wang, Jin-Wei Chang, Chen-Yu Lin
doaj   +1 more source

Application of Multiple-Scales Method for the Dynamic Modelling of a Gear Coupling

open access: yesApplied Sciences, 2019
Thin-walled gears, designed for aeronautical applications, have shown very rich dynamics that must be investigated in advance of the design phase. One of the signatures of their dynamics is coupling due to the meshing teeth which stand-alone gear models ...
Enrico Pipitone   +2 more
doaj   +1 more source

An Object-Based Approach for Mapping Crop Coverage Using Multiscale Weighted and Machine Learning Methods

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Accurate mapping of crop distribution on Earth's surface aids in predicting grain production. Pattern classification along with remote sensing imagery can facilitate traditional manual field measurement techniques using machine learning.
Zengwei Tang   +5 more
doaj   +1 more source

Technical note: Multiple wavelet coherence for untangling scale-specific and localized multivariate relationships in geosciences [PDF]

open access: yesHydrology and Earth System Sciences, 2016
The scale-specific and localized bivariate relationships in geosciences can be revealed using bivariate wavelet coherence. The objective of this study was to develop a multiple wavelet coherence method for examining scale-specific and localized ...
W. Hu, B. C. Si
doaj   +1 more source

A Robust Method for Large‐Scale Multiple Hypotheses Testing [PDF]

open access: yesBiometrical Journal, 2010
AbstractWhen drawing large‐scale simultaneous inference, such as in genomics and imaging problems, multiplicity adjustments should be made, since, otherwise, one would be faced with an inflated type I error. Numerous methods are available to estimate the proportion of true null hypotheses π0, among a large number of hypotheses tested.
Seungbong, Han   +2 more
openaire   +2 more sources

Health‐Related Social Needs in Children With Sickle Cell Disease Are Associated With Worse Health‐Related Quality of Life

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks   +5 more
wiley   +1 more source

Investigation of an Electrically Driven Microelectromechanical System Resonator Under Mechanical Shock Effect with Quintic Nonlinearity

open access: yesMathematics
In a variety of applications, including signal processing, clock referencing, sensing, and others, microelectromechanical systems (MEMS) have been shown to be effective and broadly used.
Mohamed Emad Abdelraouf   +4 more
doaj   +1 more source

Quantitative method for evaluating detailed volatility of wind power at multiple temporal-spatial scales

open access: yesGlobal Energy Interconnection, 2019
With the increasing proportion of wind power integration, the volatility of wind power brings huge challenges to the safe and stable operation of the electric power system.
Yongqian Liu   +5 more
doaj   +1 more source

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