نتایج جستجو برای: t2 star
تعداد نتایج: 106363 فیلتر نتایج به سال:
Recall, from Theorem 8.1-2 on page 490 in [4], that a random process X(t) with autocorrelation function RXX(t1, t2) has a m.s. derivative at time t if ∂RXX(t1, t2)/∂t1∂t2 exists at t1 = t2 = t. Furthermore, we recall that the correlation function RXX(t1, t2) is related to the covariance function KXX(t1, t2) as follows. RXX(t1, t2) = KXX(t1, t2) + μX(t1)μX(t2) (1) For this problem we have a cons...
We report on the discovery of a planetary system with a close-in transiting hot Jupiter on a near circular orbit and a massive outer planet on a highly eccentric orbit. The inner planet, HAT-P-13b, transits the bright V=10.622 G4 dwarf star GSC 3416-00543 every P = 2.916260±0.000010 days, with transit epoch Tc = 2454779.92979± 0.00038 (BJD) and duration 0.1345± 0.0017d. The outer planet, HAT-P-...
background access to appropriate images of fetal brain can greatly assist to diagnose of probable abnormalities. the aim of this study was to compare the suitability of t2-true fast imaging with steady state free precession (t2-trufi), and t2-half-fourier acquisition single-shot turbo spin-echo (t2- haste( magnetic resonance imaging (mri) to extract the fetal brain using the level set algorithm...
The solutions of photometric BV light curves for the Algol like system UV Leo were obtained using Wilson-Devinney code. The physical and orbital parameters along with absolute dimensions of the system were determined. It has been found that to best fit the V light curve of the system, assumptions of three dark spots were necessary two on the secondary and one on the primary. The absolute visual...
بیماران تالاسمی ماژور به علت تزریقات مکرر خون در معرض اضافه بار آهن در بافت های مختلف بدن به ویژه قلب و کبد هستند و 70 % علت مرگ و میر بیماران تالاسمی ، نارسایی قلبی ناشی از سیدروز میوکارد است . با توجه به شیوع بالای تالاسمی در کشور ، بر آن شدیم تا ارتباط میزان فریتین سرم و t2*mri قلب و کبد را بررسی نماییم تا با داشتن اطلاعات جامع تری از میزان بار آهن بدن بتوانیم به درمان موثرتر و بهبود کیفیت ز...
T2 control charts are used to monitor a process when more than one quality variable associated with process is being observed. Recent studies have shown that using variable sample size (VSS) schemes result in charts with more statistical power when detecting small to moderate shifts in the process mean vector. This paper presents an economic- statistical design of T2 control charts with variabl...
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