This study attempted to investigate writing problems and the relationship between expert-assessment and self-assessment of writing problems. Participants were thirty four non-English faculty members of Tehran and Guilan universities. The instruments were writing an essay on the topic "What teaching strategies do you use in your classes?" in twenty five lines and filling the questionnaire of wri...

A common study to investigate gene-environment interaction is designed to be longitudinal and population-based. Data arising from longitudinal association studies often contain missing responses. Naive analysis without taking missingness into account may produce invalid inference, especially when the missing data mechanism depends on the response process. To address this issue in the ana...

meteorological stations usually contain some missing data for different reasons.there are several traditional methods for completing data, among them bivariate and multivariate linear and non-linear correlation analysis, double mass curve, ratio and difference methods, moving average and probability density functions are commonly used. in this paper a blended model comprising the bivariate expo...