this study investigated how group formation method, namely student-selected vs. teacher-assigned, influences the results of the community model of teaching creative writing; i.e., group dynamics and group outcome (the quality of performance). the study adopted an experimental comparison group and microgenetic research design to observe the change process over a relatively short period of time. ...

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Background and aims: In spite of industrial safety’s developments in Iran, construction safety is not in desirable level and needs to be evaluated from different aspects. The aim of this study was to evaluate safety climate structure in construction projects and its effect on safety performance and accidents frequency rate. Methods: This study was conducted at 4 construction projects. ...