نتایج جستجو برای: asymmetric effects

تعداد نتایج: 1604108  

Journal: :International Transactions in Operational Research 2005

Journal: :Socius: Sociological Research for a Dynamic World 2019

ژورنال: پژوهشنامه مالیات 2018
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  Abstract The main purpose of this study is to explore the relationship between “direct and indirect taxes” and “inequality of income distribution” in Iran. So, we have used annual time series data of the direct taxes to GDP ratio, indirect taxes to GDP ratio, and the Gini coefficient during 1982-2014. The results of the threshold unit root tests with an asymmetric adjustment show that all va...

Journal: :journal of dentistry, tehran university of medical sciences 0
allahyar geramy professor, dental research center dentistry research institute, department of orthodontics, tehran university of medical sciences, tehran, iran omid mortezai assistant professor of orthodontics, dental caries prevention research center, qazvin university of medical sciences, qazvin, iran masomeh esmaily assistant professor, department of orthodontics, lorestan university of medical sciences, khorramabad, iran hojat darvishpour postgraduate student, orthodontics department, school of dentistry, tehran university of medical sciences, tehran, iran

o bjectives: headgears are among the effective orthodontic appliances to achieve treatment goals. unilateral molar distal movement is sometimes needed during an orthodontic treat- ment, which can be achieved by an asymmetric headgear. different unilateral headgears have been introduced. the main goal of this study was to analyze the force system of uni- lateral expanded outer bow asymmetric hea...

Recently, quantile regression (QR) models are often applied for longitudinal data analysis. When the distribution of responses seems to be skew and asymmetric due to outliers and heavy-tails, QR models may work suitably. In this paper, a semi-parametric quantile regression model is developed for analysing continuous longitudinal responses. The error term's distribution is assumed to be Asymmetr...

مبینی, بهرام, پرنیان پور, محمد, کهریزی, صدیقه, برویس, سها ,

 Background: Changes in load during asymmetric holding may be associated with particularly high risk of loss of balance and spinal injury. Therefore, in order to assess occupational lesions and to make preventive rehabilitation programs in such conditions like holding dynamic loads in asymmetric postures could be important.  Methods:  In a cross-sectional study, COP amplitude and velocit...

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