Results 21 to 30 of about 25,026,571 (299)

Optimal Sizing of Hybrid Energy Storage System Taking into Account Economic Factors and Power Allocation [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The sizing of hybrid energy storage system (HESS) for smoothing wind power fluctuations was studied in this paper. The goal of the proposed method is to find the optimal sizing of the battery and supercapacitor, and its meet the constraints of the power ...

doaj   +1 more source

Assessing Exercise-Induced Bronchoconstriction in Children; The Need for Testing

open access: yesFrontiers in Pediatrics, 2019
Objective: Exercise-induced bronchoconstriction (EIB) is a specific morbidity of childhood asthma and a sign of insufficient disease control. EIB is diagnosed and monitored based on lung function changes after a standardized exercise challenge test (ECT).
Natasja Lammers   +9 more
doaj   +1 more source

One-Bit LFMCW Radar: Spectrum Analysis and Target Detection [PDF]

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2019
One-bit radar, performing signal sampling and quantization by a 1-bit analog-to-digital converter, is a promising technology for many civilian applications due to its low-cost and low-power consumptions.
Benzhou Jin   +4 more
semanticscholar   +1 more source

The global prevalence of autism spectrum disorder: A three-level meta-analysis

open access: yesFrontiers in Psychiatry, 2023
Autism spectrum disorder (ASD) is one the most disabling developmental disorders, imposing an extremely high economic burden. Obtaining as accurate prevalence estimates as possible is crucial to guide governments in planning policies for identification ...
O. I. Talantseva   +7 more
semanticscholar   +1 more source

Study on Fatigue Spectrum Analysis and Reliability Analysis of Multilayer Flexible Riser

open access: yesJournal of Marine Science and Engineering, 2022
Multilayer composite flexible risers have been widely used in engineering. However, this type of structure is complex, as there are influences between layers. Moreover, a range of uncertain factors need to be considered in fatigue analysis. Therefore, it
Jianxing Yu   +5 more
doaj   +1 more source

Experimental study on the effect of an oyster reef on the nonlinear characteristics of irregular waves

open access: yesFrontiers in Marine Science, 2022
As a “marine ecological engineer”, the oyster reefs not only perform important ecological functions, but also reduce the damage caused by waves to protective structures such as seawalls.
Beihan Jiang   +8 more
doaj   +1 more source

Terahertz frequency spectrum analysis with a nanoscale antiferromagnetic tunnel junction [PDF]

open access: yesJournal of Applied Physics, 2019
A method to perform spectrum analysis on low power signals between 0.1 and 10 THz is proposed. It utilizes a nanoscale antiferromagnetic tunnel junction (ATJ) that produces an oscillating tunneling anisotropic magnetoresistance, whose frequency is ...
P. Artemchuk   +9 more
semanticscholar   +1 more source

The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis

open access: yesProceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1998
A new method for analysing nonlinear and non-stationary data has been developed. The key part of the method is the ‘empirical mode decomposition’ method with which any complicated data set can be decomposed into a finite and often small number of ...
Norden E. Huang   +8 more
semanticscholar   +1 more source

Sound Level Measurement and Spectrum Analysis in Full and Empty Various Social Spaces

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
The noise seen in different areas throughout human history has turned into a frequently complained problem with the increasing industry and technology. Unfortunately, the problem of noise has become a part of social life today.
Serden Başak, Kazım Onur Demirarslan
doaj   +1 more source

Near-Infrared Reflectivity of Superconducting FeSe Thin Films

open access: yesIEEE Photonics Journal, 2019
We present an investigation on the intrinsic optical properties of superconducting FeSe thin films deposited on CaF2 substrates. It is found that the samples respond strongly to the near-infrared (NIR) irradiation in different temperature regimes.
Yanmin Zhang   +12 more
doaj   +1 more source

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