The purpose of the this research was investigate the comparison of risk taking and cognitive distortion of students with and without addiction tendency. This research was a case-comparative study. The population is consisted of all boy students of high school  in the city of  Bostanabad. The research participants is consisted of 200 students (100 students with addiction tendency and 100 student...

Increasingly, Welding is used in industry for assembled various products, such as ships, cars, trains and bridges. Welding distortion often results such as lack of accuracy during assembly and will have increases manufacturing costs. So, predict and reduce welding distortion is very important to improve the quality of welded structures.  In this study, firstly, a prediction method of welding di...

Increasingly, Welding is used in industry for assembled various products, such as ships, cars, trains and bridges. Welding distortion often results such as lack of accuracy during assembly and will have increases manufacturing costs. So, predict and reduce welding distortion is very important to improve the quality of welded structures.  In this study, firstly, a prediction method of welding di...