aim and back ground: impulsivity and risky decision making is a core element of plenty of individual and social deficits. on the other hand, history of attention deficit disorder and hyperactivity has been reported in many people with these problem particularly addiction. decision making requires basic cognition function such as inhibition, working memory and attention. the aim of the current s...

background and objectives: musculoskeletal disorders are common among children. burden imposed on neck, shoulder and back areas by carrying schoolbags may result in musculoskeletal disorders in students. the aim of this study is to determine the frequency of musculoskeletal symptoms and factors associated with these symptoms in students of tehran.   methods: three hundred and forty students par...

Ž . Ž . Two reconfigurable wavelength addrdrop multiplexer WADM and optical cross-connect OXC devices based on Ž . strain-tunable fiber Bragg gratings ST-FBGs are proposed. The feasibility of WADM is verified by measuring the Ž . Ž . bit-error-rate performance of the dropped cross-connect and pass-through no cross-connect channels over a 50and 100-km standard single-mode fiber for a 2.5 Gbrs sy...

BACKGROUND Low back pain (LBP) is one of the most prevalent occupational health problems in industrialized countries. Little is known about the epidemiology of LBP in developing countries. AIMS To determine the prevalence of LBP among Nepalese textile workers and to investigate the influence of exposure to mechanical and other factors on LBP reporting. METHODS Interviewers completed questio...

objectives due to the lack of a standard tool for assessing patients’ capacity to consent to medical treatment in iran, the present study was carried out aiming to devise a persian version of a cross-cultural adaptation of the macarthur competence assessment tool. conclusions in the present study, we are able to focus on and prove the efficacy and benefits of this measurement tool. results the ...