Background and Aim: The purpose of this study is to determine the quality requirements of the National Digital Library based on the Kano model and categorize users needs into three groups of:  Basic, functional and motivational. Methods: This survey was conducted with a qualitative approach. The requirements of the digital library were extracted using two standards: "Digiqual manual" and the "D...

  Designers draw diagrams to think about architectural concepts and design concerns. Scientists are interested in programming a computer to recognize and interpret design diagrams to deliver appropriate tools for the design task at hand. Researchers conducted empirical studies to find out if designers share drawing conventions when designing. Quick improvement in technology guide us to develope...