Since its introduction in 1986, the 10-item System Usability Scale (SUS) has been assumed to be unidimensional. Factor analysis of two independent SUS data sets reveals that the SUS actually has two factors – Usability (8 items) and Learnability (2 items). These new scales have reasonable reliability (coefficient alpha of .91 and .70, respectively). They correlate highly with the overall SUS (r...

web information usability is a new issue, which has attracted many specialists in these days. it has been of great importance regarding the increasing growth of web sites requiring quality monitoring. web quality measurement has intrinsic difficulties and complexities, pushing specialists to devise automatic ways to measure its different aspects, among them usability and accessibility. this stu...

introduction: health information systems have the potential of improving the quality of healthcare and treatment procedures and supporting the physicians in their clinical diagnoses. nowadays, evaluating the usability is widely accepted as a crucial factor in the acceptance and success of the interactive healthcare systems. the present study aimed to evaluate the usability of ulite software bas...

this paper attempts to rank the effective factors in making trust in social networks to provide the possibility of attracting and increasing users’ trust on these social networks for providers and designers of online social networks. identifying the effective factors in making trust in social networks is a multi-criteria decision making problem and most of effective factors are ambiguous and un...

In recent years, the usability of software systems has been recognized as an important quality factor. Many definitions and models of usability have been given so far but they are brief and informal. Most of these models also fail to cover all of the aspects of usability and are not well integrated. This paper proposes an integrated model that describes the concept of software usability and exp...

This paper presents important factors affecting the Usability of Academic web-sites. Well known academic sites have been evaluated for their usability. Usability is the most important quality factor a web-site should consist of. A broad, integrated, engineering-based approach has been used to evaluate the usability of the Web-sites. A small, controlled and well planned experiment is conducted i...