introduction: nowadays and with the increasing role of the worldwide web as one of the most important sources of information on the one hand, and the enhancement of its usability on the other, it is necessary for the web designers and developers to be familiar with the criteria that make a web portal usable. therefore, the present study aimed to provide knowledge about the criteria of usability...

In the database field, while very strong mathematical and engineering work has been done, the scientific approach has been much less prominent. The deep understanding of query optimizers obtained through the scientific approach can lead to better engineered designs. Unlike other domains, there have been few DBMS-dedicated laboratories, focusing on such scientific investigation. In this demonstr...

introduction: health system performance assessment provides appropriate information about the status of health systems for governments and communities. therefore, in the recent decade, many countries have focused on performance assessment and reporting in order to develop methods and tools as a mean to help achieving health goals. the present study tries to design an indicator-based model (incl...