objectives the main aim of this study was to assess the road emergency sites (recs) in iran. materials and methods provincial data were used for this purpose. concentration index, concentration curve, lorenz curve, and the gini coefficient were calculated to assess the distribution of recs. results the results of this study showed that the distribution of recs was in favor of provinces with hig...

The presented study investigated the effect of index concentration on component security and variances to explore possibility risk its impact performance in different markets. also 1/n with market cap find possible costs for investors. We analyzed BRICSU (BRICS plus USA) by applying various tools measures determining volatility returns help mean–variance model. did a simple simulation understan...

background : inequality in households’ payments on food and health expenditures presents the accessibility and utili-zation patterns between them. this study investigated the iranian rural and urban households’ inequality in payments on food and out-of-pocket health expenditures from 1998 to 2012. methods : this descriptive study was conducted through the analysis of iranian statistics centre d...

the aim of this study was to determine the socioeconomic inequalities in nonuse of seatbelts in cars and helmets on motorcycles in kurdistan province, west of iran, 2009.the data used in this study was collected from the data gathered in non-communicable disease surveillance system (ncdss) in 2009 in kurdistan. a total of 1000 people were included in this study. the outcome variable of this stu...

porous silicon (ps) samples have been prepared by electrochemical anodization of p-type silicon wafer by varying hf concentrations in the electrolytic solution. the structural, surface morphological, optical and surface composition analysis of the prepared samples were done by x-ray diffraction (xrd), scanning electron microscopy (sem), photoluminescence (pl) and fourier transform infrared (fti...

This paper presents an adaptive version of the Hill estimator based on Lespki’s model selection method. This simple data-driven index selection method is shown to satisfy an oracle inequality and is checked to achieve the lower bound recently derived by Carpentier and Kim. In order to establish the oracle inequality, we derive non-asymptotic variance bounds and concentration inequalities for Hi...