نتایج جستجو برای: asymmetric mixed models

تعداد نتایج: 1163219  

Journal: :بینا 0
مرجان منصوریان m mansourian tarbiat modares university, tehran, iranتهران- بزرگراه جلال آل احمد- دانشگاه تربیت مدرس- گروه آمار زیستی انوشیروان کاظم نژاد a kazemnejad tarbiat modares university, tehran, iranتهران- بزرگراه جلال آل احمد- دانشگاه تربیت مدرس- گروه آمار زیستی ایرج کاظمی i kazemi university of isfahan, isfahan, iranدانشگاه اصفهان فرید زایری f zayeri school of paramedical sciences, shahid beheshti university of medical sciences tehran, iranدانشگاه علوم پزشکی شهید بهشتی مسعود سهیلیان m soheilian ophthalmic research center, shahid beheshti university of medical sciences, tehran, iranدانشگاه علوم پزشکی شهید بهشتی

purpose: one of the major causes of visual acuity loss in diabetic patients is diabetic macular edema (dme). best-corrected visual acuity and central macular thickness changes are considered as two main outcomes in diabetic macular patients. the goal of this study was to compare the effect of intravitreal bevacizumab injection alone or combined with triamcinolone versus macular photocoagulation...

Journal: :international journal of epidemiology research 0
fariba asadi shahid sadoughi university of medical sciences, yazd, i.r. iran hossein fallahzadeh biostatistics dept., shahid sadoughi university of medical sciences, yazd, i.r. iran. masoud rahmanian diabetes research center, shahid sadoughi university of medical sciences, yazd, i.r. iran.

background and aims: diabetes type ii (non-insulin dependent) which is one of the most prevalent diabetes types in the world emerges in people with the age of above 55 and genetic and environmental factors interfere in this disease. the aim of this study was to determine the factors affecting diabetes type ii with generalized mixed linear model. methods: population of this study included 2820 p...

Abstract This study goes beyond the the prevailing use of averaged data to investigate the hidden evidence of asymmetry due to the effect of monthly exchange rate fluctuations on Iran's quarterly GDP during the period 1380:1-1397-4. For this purpose, the regression model of Mixed Data with different asymmetric frequency (MIDAS model) is use, which allows time series variables with different fre...

Journal: :iranian journal of applied animal science 2015
r. osei-amponsah b.b. kayang a. naazie i.m. barchia p.f. arthur

the logistic, gompertz, richards and asymmetric logistic growth curve models were fitted to body weight data of local ghanaian chickens and french sasso t44 chickens. all four growth models provided good fit for each sex by genotype growth data with r2 values ranging from 86.7% to 96.7%. the rate constant parameter, k, ranged between 0.137 and 0.271 and were significantly different from zero fo...

Journal: :international journal of advanced design and manufacturing technology 0
mohammadreza safaiy hamidreza goshayeshi

mixed convection is a fundamentally significant heat transfer mechanism that occurs in selection industrial and technological applications. in this study, first the laminar mixed convection inside rectangular enclosure with moving wall and aspect ratio=10 is modeled and then the results are compared with other investigate. after showing varity of results, the investigation is continued with tur...

A. Naazie B.B. Kayang I.M. Barchia P.F. Arthur, R. Osei-Amponsah

The logistic, Gompertz, Richards and asymmetric logistic growth curve models were fitted to body weight data of local Ghanaian chickens and French SASSO T44 chickens. All four growth models provided good fit for each sex by genotype growth data with R2 values ranging from 86.7% to 96.7%. The rate constant parameter, k, ranged between 0.137 and 0.271 and were significantly different from zero fo...

Alternative specifications of univariate asymmetric Laplace models are described and investigated. A more general mixture model is then introduced. Bivariate extensions of these models are discussed in some detail, with particular emphasis on associated parameter estimation strategies. Multivariate versions of the models are briefly introduced.

2008
Victor H. Lachos Dipak K. Dey Vicente G. Cancho Hugo Lachos Dávila

Linear mixed models were developed to handle clustered data and have been a topic of increasing interest in statistics for the past fifty years. Generally, the normality (or symmetry) of the random effects is a common assumption in linear mixed models but it may, sometimes, be unrealistic, obscuring important features of among-subjects variation. In this article, we utilize skew-normal/independ...

This study investigated the asymmetric effects of financial instability shocks on economic growth and monetary policy shocks on financial instability in Iran. For this purpose,data 1991:3 to 2017:1 and nonlinear auto-regressive distributed lag (NARDL) approach has been used. For this purpose, three models have been estimated. In the first model, the asymmetric effects of fiscal instability shoc...

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