Objectives: The aim of present study was determining the level of satisfaction and its relative factors among parents of mentally retarded children using the services of private rehabilitation centers. Methods: This was a descriptive-analytical study that was conducted on parents of 150 mentally retarded children, who were selected by quota sampling from eight private rehabilitation centers ...

An attempt has been made to evaluate the feedbacks of library users of four different libraries by using neural network based data mining techniques. This paper presents the results of a survey of users’ satisfactory level on four different libraries. The survey has been conducted among the users of four libraries of educational institutions of Kovai Medical Center Research and Educational Trus...

Digital Libraries are one of the most common web services for information seeking. Their main advantage is also their main disadvantages: digital libraries are designed with a global approach for everyone which implies that all users are presented with the same interface. Previous studies have proved to help users search information by matching the interface to their preferences. In this contex...

The GM-MDS conjecture of Dau et al. (ISIT 2014) speculates that the MDS condition, which guarantees the existence of MDS matrices with a prescribed set of zeros over large fields, is in fact sufficient for existence of such matrices over small fields. We prove this conjecture.

The wealth of social information presented on Facebook is astounding. While these affordances allow users to keep up-to-date, they also produce a basis for social comparison and envy on an unprecedented scale. Even though envy may endanger users’ life satisfaction and lead to platform avoidance, no study exists uncovering this dynamics. To close this gap, we build on responses of 584 Facebook u...