the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

Background and Aim: For achievement of equity in the population health the implementation of health in all policies is essential. The most crucial intervention in this approach is inter-sectoral collaboration.  Materials and Methods: This was a qualitative study based on the national policy framework. Data were collected using literature review, in-depth interviews and focus group discussions ...