Abstract This study examines the dominant heatwave variability over North America (NA), extracted from an empirical orthogonal function (EOF) analysis of summertime monthly warm extreme index anomalies 1959–2021. The principal mode features a dipole structure with large area anomaly northwestern NA and opposite sign southern U.S. corresponding component is associated large-scale atmospheric wav...

this paper aimed to investigate the relationship between components of social capital (security, trust, social norms, social networks and participation in social activities) and physical activity participation among the adolescent students in yazd city. the statistical population of the study included adolescent students (14-17 years old) from yazd city. 382 adolescents were randomly selected t...