the purpose of this paper is to investigate the impact of voluntary disclosure about corporate social responsibility (csr) on firm’s financial performance. first, a state of the art about corporate social responsibility and social reporting is presented. after that, the problems of measurement of csr are indicated and the hypotheses are proposed. in the empirical analysis, regression models are...

social anxiety (or social phobia) disorder is defined as a constant fear of being embarrassed or negatively evaluated in social situations or while doing activities in the presence of others. several studies have examined the role of certain variables that might predict response to treatment and may affect treatment outcome. the purpose of this study was to identify predictive variables of chan...

introduction: construction phase in industries is a dynamic process that is naturally and intrinsically dangerous and as it becomes more complicated, the accidents rate also increases. one should note that without considering a model, one could not obtain useful and reliable information and method to prevent accidents. therefore, to achieve useful methods for preventing accidents, it is desirab...

the present research analyzes air quality in ahvaz, a city in the south of iran, paying special attention to sulfur dioxide (so2). in order to prepare the average data in the city, measurements have been carried out between 2009 and 2010 in two different locations. relations between sulfur dioxide and some meteorological parameters have been calculated statistically, using the daily average dat...

This article considers a bent-cable quantile regression model that comprises two linear segments but is smoothly jointed by quadratic bend. very flexible to allow the relationship between response variable and covariate of interest change gradually or abruptly across point value in covariate. However, due non-differentiability objective function regression, it challenge estimate unknown paramet...