نتایج جستجو برای: data variability

تعداد نتایج: 2535942  

Journal: :International Journal of Climatology 2022

This work improves the characterization and knowledge of surface wind climatology over Europe with development an observational database unprecedented quality control (QC), European Surface Wind Observational (EuSWiO). EuSWiO includes more than 3,829 stations sub-daily resolution for speed direction, a number sites spanning period 1880–2017, few hundred time series starting in 1930s relatively ...

Journal: Iranian Economic Review 2016
Havvanur Feyza Erdem Rahmi Yamak,

Abstract This study investigates the empirical validity of the variability hypothesis in Turkey for the period of February 2005-November 2015, by using cross-sectional relative price data and by focusing on the assumptions of linearity and stability. The linearity assumption between the two variables is ensured by estimating quadratic regression equation. The assumption of stability is secur...

Journal: :تحقیقات جغرافیایی 0
زهرا حاجی زاده گروه جغرافیای طبیعی، دانشگاه محقق اردبیلی برومند صلاحی گروه جغرافیای طبیعی، دانشگاه محقق اردبیلی

in this research, effect of north atlantic oscillation and sea surface temperature (sst) of atlantic ocean on precipitation and temperature of lorestan province and its effect on occurrence of drought and wet in this province were investigated. so, data of teleconnection indices used as an index for determination of fluctuations of pressure and sea surface temperature in atlantic ocean, amount ...

2015
Roland G. Fryer Divyakant Agrawal Philip Bernstein Elisa Bertino

The rapid proliferation of data has lead to the necessity of big data. However the volume of big data is constantly growing. Big data comprises of extremely large data sets which are beyond the scope of management offered by commonly used software. Big Data mining can be described as a set of techniques and technologies used for extracting useful information from these large datasets or streams...

2015
Maike Luhmann Ulrich Schimmack Michael Eid

Empirical studies typically find a moderate positive correlation between subjective well-being (SWB) and income. In the present paper, we examined stable and transient determinants of the relation between affective well-being and income in the British Household Panel Survey (BHPS; N = 37,041) and the relation between cognitive well-being and income in the BHPS (N = 31,871) and the Socio-Economi...

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

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