In this paper, we shortly review two formal approaches in verification of security protocols; model checking and theorem proving. Model checking is based on studying the behavior of protocols via generating all different behaviors of a protocol and checking whether the desired goals are satisfied in all instances or not. We investigate Scyther operational semantics as n example of this...

aim and background: some of obsessive-compulsive disorder (ocd) patients believe that their unpleasant thoughts can influence the external events. the aim of this study was to investigate the correlation between the contents of thought-action fusion and obsessive-compulsive symptoms in patients with ocd. methods and materials: in this cross-sectional correlative study 60 ocd patients selected b...