نتایج جستجو برای: bayesian method

تعداد نتایج: 1692596  

ژورنال: :مجله گیاهشناسی ایران 2012
رضا شیخ اکبری مهر عباس سعیدی شاهرخ کاظم پور اصالو علی اصغر معصومی

در مطالعه حاضر فیلوژنی بیست و دو گونه از گون های کرک دوشاخه ای متعلق به بخشه دیسیتی فلوری و چند بخشه وابسته و نزدیک به آن، با استفاده از داده های ریخت شناختی و مولکولی مورد ارزیابی قرار گرفت. براساس نتایج بدست آمده، بخشه dissitiflori در تمام آنالیزهای انجام شده، به تنهایی گروهی منوفیلتیک را تشکیل نمی دهد. البته اعضای این بخشه بهمراه گونه های مربوط به دیگر بخشه های نزدیک به آن را می توان یک گروه...

Journal: :gastroenterology and hepatology from bed to bench 0
nastaran hajizadeh department of biostatistics, shahid beheshti university of medical sciences, tehran, iran mohamad amin pourhoseingholi phd, research institute for gastroenterology and liver diseases, shahid beheshti university of medical sciences, tehran, iran. ahmad reza baghestani department of biostatistics, shahid beheshti university of medical sciences, tehran, iran alireza abadi department of biostatistics, shahid beheshti university of medical sciences, tehran, iran ghoreshi behnaz

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Journal: :journal of biostatistics and epidemiology 0
abbas rahimi-feroushani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran mohammad chehrazi department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran and department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute, tehran, iran keramat nourijelyani department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran reza omani-samani department of epidemiology and reproductive health, reproductive epidemiology research center, royan institute, tehran, iran

b a c k g r o u n d & aim: the aim of the current study was to investigate the advantages of bayesian method in comparison to traditional methods to detect best antioxidant in freezing of human male gametes. methods  &  materials:   semen  samples  were  obtained  from  40  men  whose  sperm  had  normal criteria. a part of each sample was separated without antioxidant  as fresh and the remaini...

Journal: :international journal of pediatrics 0
hamid reza khalkhali associate professor in biostatistics, inpatient’s safety research center, department of biostatistics and epidemiology, urmia university of medical sciences, urmia, iran. shahsanam gheibi associate professor of pediatric gastroenterology, maternal and childhood obesity research center, urmia university of medical sciences, urmia, iran. rasool gharaaghaji associate professor in biostatistics, department of health and preventive medicine, urmia university of medical sciences, urmia, iran. alireza didarloo associate professor in health education and promotion, solid tumor research center, department of health and preventive medicine, urmia university of medical sciences, urmia, iran.

background often, there is no access to sufficient sample size to estimate the prevalence using the method of direct estimator in all areas. the aim of this study was to compare small area’s bayesian method and direct method in estimating the prevalence of steatosis in obese and overweight children. materials and methods: in this cross-sectional study, was conducted on 150 overweight and obese ...

ژورنال: اندیشه آماری 2020
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In the analysis of Bernoulli's variables, an investigation of the their dependence is of the prime importance. In this paper, the distribution of the Markov logarithmic series is introduced by the execution of the first-order dependence among Bernoulli variables. In order to estimate the parameters of this distribution, maximum likelihood, moment, Bayesian and also a new method which called the...

ژورنال: پژوهش های ریاضی 2021

Introduction      This paper is concerned with using the Maximum Likelihood, Bayes and a new method, E-Bayesian, estimations for computing estimates for the unknown parameter, reliability and hazard rate functions of the Generalized Inverted Exponential distribution. The estimates are derived based on a conjugate prior for the unknown parameter. E-Bayesian estimations are obtained based on th...

ژورنال: اندیشه آماری 2017

‎In this study‎, ‎E-Bayesian of parameters of two parameter exponential distribution under squared error loss function is obtained‎. ‎The estimated and the efficiency of the proposed method has been compared with Bayesian estimator using Monte Carlo simulation‎. 

Journal: :journal of mining and environment 2014
amir mollajan hossein memarian behzad tokhmechi

detection of oil-water contacts (owcs) is one of the primary tasks before evaluation of reservoir’s hydrocarbon in place, determining net pay zones and suitable depths for perforation operation. this paper introduces bayesian decision making tool as an effective technique in owc detecting using wire line logs. to compare strengths of the suggested method in detecting owc with conventional one, ...

Background Often, there is no access to sufficient sample size to estimate the prevalence using the method of direct estimator in all areas. The aim of this study was to compare small area’s Bayesian method and direct method in estimating the prevalence of steatosis in obese and overweight children. Materials and Methods: In this cross-sectional study, was conducted on 150 overweight and obese ...

Large survey data are often accompanied by sampling weights that reflect the inequality probabilities for selecting samples in complex sampling. Sampling weights act as an expansion factor that, by scaling the subjects, turns the sample into a representative of the community. The quasi-maximum likelihood method is one of the approaches for considering sampling weights in the frequentist framewo...

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