methods the current cross sectional study included all female high school students in tehran in the 2014 - 2015 academic year. of these, 477 females were selected by multistage cluster sampling. results the results of the correlation matrix was indicative of a significant negative relationship between self-esteem and self-concept clarity with social comparison (p < 0.000). there was a significa...

as a culture-based phenomenon which involves both linguistic and social aspects, translation has been investigated from various perspectives. the present critical discourse analysis (cda)-based study is an attempt to probe into the manipulation of ideologies in translations of political texts. a cda approach, based on fairclough (1989), van dijk (2004) and farahzad (2007), was adopted to conduc...

Let A be a non-negative self-adjoint operator in a Hilbert space H and A0 be some densely defined closed restriction of A0, A0 ⊆ A 6= A0. It is of interest to know whether A is the unique non-negative self-adjoint extensions of A0 in H. We give a natural criterion that this is the case and if it fails, we describe all non-negative extensions of A0. The obtained results are applied to investigat...