نتایج جستجو برای: sample

تعداد نتایج: 407458  

Journal: :Journal of the Experimental Analysis of Behavior 2000

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

Journal: :ALEA-Latin American Journal of Probability and Mathematical Statistics 2022

In practice, we often encounter situations where a sample size is not defined in advance and can be random value. The randomness of the crucially changes asymptotic properties underlying statistic. present paper second order Chebyshev--Edgeworth Cornish--Fisher expansions based Student's $t$- Laplace distributions their quantiles are derived for median with special kind.

Journal: :The Astrophysical Journal 2021

We present a well-defined and characterized all-sky sample of classical Cepheids in the Milky Way, obtained by combining two time-domain surveys: Gaia DR2 (Gaia Collaboration et al. 2018) All-Sky Automated Survey for Supernovae (ASAS-SN; Shappee 2014). first use parallax variability information from to select ∼30,000 bright (G < 17) Cepheid candidates with MK − 1. then analyze their ASAS-SN V-b...

Journal: :Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 2014

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