a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

Introduction: Academic performance and anxiety at university are among the issues that have caught community leaders and researchers’ attention. It has always been important to consider what factors affect students’ academic achievement and success, or how much is the contribution of each factor. Therefore, the purpose of this study was to investigate the relationships among social skills, a...

Iran’s social and cultural conditions and changes and the importance of trust in citizens’ social interactions over the recent years have foregrounded the issue of probing the extent of trust in individuals, groups, and organizations. Urban management, particularly municipality, as one of the largest social institutions, can enjoy much more efficiency and productivity provided that it wins citi...

Background: Autism is a developmental neurological disorder of childhood. Autistic children face with many stereotypical problems like social skills, communication skills, and repetitive behaviors. This study aimed to evaluate the efficacy of social skills for children with autism by using horses. Method: Sample of study consists of a nine-year-old autistic boy who were selected by accessible s...

recent studies in scientific education as well as foreign and second language instruction suggest that thinking has rarely been an integral part of education and training in classroom. some scholars decried the lack of emphasis on thinking in the institutes and schools. they noted that memorization and drills were rewarded,while inquiry, reflection, and consideration of alternatives were frowne...