Nelda Nagy

Evaluating the Usability of Information Systems

In the International Space Station Integration Processes

• Broschiertes Buch

Produktbeschreibung

NASA s budget has decreased, and information systems (IS) technology entails committing millions of dollars, so the usability, success, and return on investment (ROI) have a direct impact on the NASA budget. Two strong determinants of successful information systems are usability and the user s continuance intention. A quantitative methodology design, utilizing the System Usability Scale (SUS) was used in this study to measure satisfaction indicating the existence of usability and a post acceptance tool which determines continuance intention indicating systems usability. The Likert-type scale survey was given to 114 participants working on a NASA payload integration contract in the management, engineering, and operations areas. Structural equation modeling tested the five hypotheses and determined if there was a relationship between perceived usefulness, confirmation, satisfaction, and continuance intention. The expectation confirmation theory (ECT) and the continuance intention model using structural equation modeling (SEM) quantitatively measured if there was a relationship between perceived usefulness, confirmation, satisfaction, and continuance intention.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Seitenzahl: 152
• Erscheinungstermin: 27. Januar 2015
• Englisch
• Abmessung: 220mm x 150mm x 10mm
• Gewicht: 244g
• ISBN-13: 9783659677274
• ISBN-10: 3659677272
• Artikelnr.: 42181089

Autorenporträt

Nelda S. Nagy received a B.S. degree in Computer Science from the University of Alabama in Birmingham, B.S. degree in Math Education from Athens State University, a MBA with a concentration on Engineering Management and a PhD with a concentration on Management of Information Systems from Northcentral University of Arizona.