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Evaluating the Usability of Information Systems

Evaluating the Usability of Information Systems


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About the Book

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.


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Product Details
  • ISBN-13: 9783659677274
  • Publisher: Lap Lambert Academic Publishing
  • Publisher Imprint: LAP LAMBERT Academic Publishing
  • Height: 229 mm
  • No of Pages: 152
  • Series Title: English
  • Weight: 281 gr
  • ISBN-10: 3659677272
  • Publisher Date: 27 Jan 2015
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Spine Width: 9 mm
  • Width: 152 mm


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