نتایج جستجو برای: normal distribution.

تعداد نتایج: 1131872  

Journal: :iranian journal of science and technology (sciences) 2005
j. behboodian

the problem of hypothesis testing with a nuisance parameter is considered. two methods forusing fuzzy knowledge on the nuisance parameter to test hypotheses are suggested. these methods areneither a pure classical nor a pure bayesian approach to hypothesis testing, but rather related to both. afew known examples and their applications, which cannot be studied by the parametric statisticalmethod...

Journal: :iranian journal of science and technology (sciences) 2006
a. r. soleimani

scott and szewczyk in technometrics, 2001, have introduced a similarity measure for twodensities f1 and f2 , by1, 21 21 1 2 2( , ), ,f fsim f ff f f f< >=< >< >wheref1, f2 f1(x, θ1)f2(x, θ2)dx.+∞−∞< >=∫sim(f1, f2) has some appropriate properties that can be suitable measures for the similarity of f1 and f2 .however, due to some restrictions on the value of parameters and the kind of densities, ...

Journal: :آب و خاک 0
صادقی صادقی قهرمان قهرمان داوری داوری

abstract in recent years, many researchers have attempted to estimate the soil hydraulic functions (e.g. soil moisture characteristics curve, and hydraulic conductivity function) using particle-size distribution (psd) curve. in these studies, an accurate mathematical representation of psd is required for fitting the observed data. so far, some mathematical models were developed with different l...

Journal: :journal of crop protection 0
mehrnoosh jafari department of bio-system mechanic engineering, faculty of agriculture, tarbiat modares university, tehran, iran. saeid minaei department of bio-system mechanic engineering, faculty of agriculture, tarbiat modares university, tehran, iran. naser safaie department of plant pathology, faculty of agriculture, tarbiat modares university, tehran, iran. farah torkamani-azar department of electrical engineering, college of electrical and computer engineering, shahid beheshti university, tehran, iran. mehdi sadeghi department of horticultural sciences, faculty of agriculture, tarbiat modares university, tehran, iran.

many environmental and physiological factors affect plant temperature. the objective of this study was to use thermal imagery to investigate robust features for early diagnosis of botrytis cinerea infection in cut rose flowers under the postharvest application of methyl jasmonate (meja). three cases treated with different concentrations of meja (0.1, 0.2, and 0.3 µl.l−1), a control (0 µl.l−1 me...

Journal: :bulletin of the iranian mathematical society 2011
h. mahjub t. f. cox

2012
Valery I. Rupasov Mikhail A. Lebedev Joseph S. Erlichman Michael Linderman

We examined time-dependent statistical properties of electromyographic (EMG) signals recorded from intrinsic hand muscles during handwriting. Our analysis showed that trial-to-trial neuronal variability of EMG signals is well described by the lognormal distribution clearly distinguished from the Gaussian (normal) distribution. This finding indicates that EMG formation cannot be described by a c...

2013
Christophe Chesneau Dimitris Karlis

In this article we construct bivariate discrete distribution in Z. We make use of a generalized trivariate reduction technique. The special case leading to bivariate Skellam distributions is studied in detail. Properties of the derived models as well as estimation are examined. Real data application is provided. Discussion of extensions to different models is also mentioned.

Journal: :journal of mahani mathematical research center 0
ayyub sheikhi department of statistics, faculty of mathematics and computer, shahid bahonar university of kerman, kerman, iran.

let x1;x2;...;xn have a jointly multivariate exchangeable normal distribution. in this work we investigate another proof of the independence of x and s2 using order statistics. we also assume that (xi ; yi); i =1; 2;...; n; jointly distributed in bivariate normal and establish the independence of the mean and the variance of concomitants of order statistics.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1387

چکیده ندارد.

Journal: :iranian journal of nuclear medicine 2016
antonios dimosthenis kalkinis thomas wagner

introduction: 18f-choline pet-ct is an increasingly used technique in patients with prostate cancer. the main indication is to localise the disease in patients with biochemical recurrence. to accurately interpret 18f-choline pet, knowledge of normal tracer distribution is paramount. the aim of this study was to describe the normal distribution pattern of 18f-choline by measuring the maximum sta...

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