عنوان مقاله [English]
Whatever population and using computerized systems in home, Official and receptive dimensions is increasing, whatever digital data is increasing and then searching of users is increasing too. Surely users have problems, Like: Selecting information sources that don’t answer to informational needs, disability to specification available facilities in system and consumedly trust to self abilities and search results. Information revolution is not a problem that have started newly, understanding the behavior of information sinking is important systems that studying user. Finally, success of unsuccessful in this field is not undertake of new technology, but requires awareness of human needs and his behavior in order to access to information.