today, scouring is one of the important topics in the river and coastal engineering so that the most destruction in the bridges is occurred due to this phenomenon. whereas the bridges are assumed as the most important connecting structures in the communications roads in the country and their importance is doubled while floodwater, thus exact design and maintenance thereof is very crucial. f...

Introduction: Providing safety for human resources in the industry is of great importance and safety shoes are one of the most common PPEs that have the task of protecting the foot against potential hazards. The purpose of this study was to evaluate the discomfort and usability of safety shoes in different industries in order to find gaps in the quality of design and improve the design of safe...

learning-oriented assessment seeks to emphasise that a fundamental purpose of assessment should be to promote learning. it mirrors formative assessment and assessment for learning processes. it can be defined as actions undertaken by teachers and / or students, which provide feedback for the improvement of teaching and learning. it also contrasts with equally important measurement-focused appro...

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

Introduction: Usability is one of the issues that must be considered in designing effective e-learning courses. The aim of this study was evaluating employees’ opinion in Tehran University of Medical Sciences (TUMS) about usability of in-service electronic training courses. Methods: This descriptive cross sectional study was conducted on employees in Tehran University of Medical Sciences, work...