Search results for "Standard deviation"

showing 2 items of 282 documents

Univariate and multivariate properties of wind velocity time series

2009

We analyze the time series of hourly average wind speeds measured at 29 different stations located in Sicily, a region with a complex morphology. The investigation, performed from the univariate as well as the multivariate point of view, evidences that the statistical properties of wind at the single sites have features that are not reproduced by standard models and, thus, require specific modeling. Moreover, the synchronous evolution of wind velocity presents a cluster structure, obtained with different algorithms, that persists in the standard deviation too.

wind velocity time seriesStatistics and ProbabilityMultivariate statisticsSeries (mathematics)MeteorologyUnivariateStatistical and Nonlinear PhysicsStandard deviationWind speedhydrodynamic fluctuations random graphs networksLog wind profilePoint (geometry)Statistics Probability and UncertaintyMathematics
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Impact of using different levels of threshold-based artefact correction on the quantification of heart rate variability in three independent human co…

2020

Heart rate variability (HRV) is a non-invasive indicator of autonomic nervous system function. HRV recordings show artefacts due to technical and/or biological issues. The Kubios software is one of the most used software to process HRV recordings, offering different levels of threshold-based artefact correction (i.e., Kubios filters). The aim of the study was to analyze the impact of different Kubios filters on the quantification of HRV derived parameters from short-term recordings in three independent human cohorts. A total of 312 participants were included: 107 children with overweight/obesity (10.0 &plusmn

young adultsmedicine.medical_specialtyMiddle-aged adultslcsh:Medicine030204 cardiovascular system & hematologyOverweightStandard deviationArticle03 medical and health sciences0302 clinical medicinechildrenInternal medicinemedicineAutonomic nervous systemHeart rate variabilityChildrenbusiness.industrymiddle-aged adultsHeart rate monitorlcsh:Rautonomic nervous system030229 sport sciencesGeneral MedicineData processingAutonomic nervous systemCardiologyAnalysis of varianceKubios softwaremedicine.symptombusinessdata processingYoung adultscirculatory and respiratory physiology
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