نتایج جستجو برای: iii bayes a

تعداد نتایج: 13507922  

A Arefi, M Razmkhah, R. Mohtashami Borzadaran,

This paper focuses on a Bayes inference model for a simple step-stress life test using Type-I censored sample in a discrete set-up. Assuming the failure times at each stress level are geometrically distributed, the Bayes estimation problem of the parameters of interest is investigated in the both of point and interval approaches. To derive the Bayesian point estimators, some various balanced lo...

2000
Thomas Knox James H. Stock

We consider both frequentist and empirical Bayes forecasts of a single time series using a linear model with T observations and K orthonormal predictors. The frequentist formulation considers estimators that are equivariant under permutations (reorderings) of the regressors. The empirical Bayes formulation (both parametric and nonparametric) treats the coefficients as i.i.d. and estimates their...

     The purpose of this study was to compare the accuracy of genomic evaluation for Bayes A, Bayes B, Bayes C and Bayes L multi-step methods and SSBR-C and SSBR-A single-step methods in the different values of π for predicting genomic breeding values of the genotyped and non-genotyped animals. A genome with 40000 SNPs on the 20 chromosom was simulated with the same distance (100cM). The π valu...

Journal: :molecular biology research communications 2013
zohre hajisharifi hassan mohabatkar

cancer is one of the causes of death in the world. several treatment methods exist against cancer cells such as radiotherapy and chemotherapy. since traditional methods have side effects on normal cells and are expensive, identification and developing a new method to cancer therapy is very important. antimicrobial peptides, present in a wide variety of organisms, such as plants, amphibians and ...

Journal: :journal of sciences islamic republic of iran 0

an estimation problem of the mean µ of an inverse gaussian distribution ig(µ, c µ) with known coefficient of variation c is treated as a decision problem with entropy loss function. a class of bayes estimators is constructed, and shown to include mrse estimator as its closure. two important members of this class can easily be computed using continued fractions

Journal: :journal of the iranian statistical society 0
shirin moradi zahraie hojatollah zakerzadeh

‎consider an estimation problem in a one-parameter non-regular distribution when both endpoints of the support depend on a single parameter‎. ‎in this paper‎, ‎we give sufficient conditions for a generalized bayes estimator of a parametric function to be admissible‎. ‎some examples are given‎. ‎

Journal: :journal of sciences islamic republic of iran 0

the empirical bayes estimators of treatment effects in a factorial experiment were derived and their asymptotic properties were explored. it was shown that they were asymptotically optimal and the estimator of the scale parameter had a limiting gamma distribution while the estimators of the factor effects had a limiting multivariate normal distribution. a bootstrap analysis was performed to ill...

Journal: :journal of physical & theoretical chemistry 2011
m.h. fekri m. darvishpour e. baghdar

a poly(vinyl chloride) membrane based on a new a-dioxime derivative as membrane carrier was prepared andinvestigated as a cr(iii) selective electrode. the electrode exhibits a good potentiometric response for cr(iii)over a wide concentration range 1.0 x 10-6 to 1.0 x 10-1 m with a slope 19.5+0.5 mv/decade and low detectionlimit of 8.9 x 10-7 m. it has a fast response time < 15 s. the best perfo...

Journal: :journal of physical & theoretical chemistry 2015
h. aghaie m. h. felcri m. arvand k. zare m. aghaie

a pvc membrane cr(iii) ion selective electrode has been constructed using 2h-1,4-benzothioazine-2,3(4h)dione dioxime (btd) as membrane carrier. the influence of membrane composition on the electroderesponse was studied. the electrode exhibits a nernstian response over a cr(iii) concentration range of 1.0 x10 6 to 1.0>< 10-1 m (r = 0.99) with a slope of 19.5 ± 0.5 mv per decade of concentration,...

Journal: :تولیدات دامی 0
یحیی محمدی دانشجوی دکتری، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه فردوسی مشهد، ایران محمد مهدی شریعتی استادیار، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه فردوسی مشهد، ایران سعید زره داران استاد، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه فردوسی مشهد، ایران محمد رزم کبیر استادیار، گروه علوم دامی، دانشکدۀ کشاورزی، دانشگاه کردستان، ایران محمدباقر صیادنژاد مرکز اصلاح نژآد و بهبود تولیدات دامی کشور محمدباقر زندی مرکز اصلاح نژآد و بهبود تولیدات دامی کشور

genomic selection (gs) is a tool for prediction of breeding values for quantitative traits. for a successful application of gs, accuracy of predicted genomic breeding value (gebv) is a key issue to consider. here we investigated the accuracy of gebv in 345 genotyped iranian holstein cattle. the study was performed on milk, fat, protein yield and somatic cell count. four methods g-blup, bayes b,...

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