Unfortunately, the Arms Chapter 8 link would not open, as it seems it no longer exists at Cornell's site.
The Kling and Elliot article on digital library design defines cultural models for interpreting usability in digital libraries. They focus on two forms of DL usability; interface and organizational. It also discusses five models from which DL computer systems are generated, as incorporated by cultural models. There are also four dimensions of DLs that can be used to test interface usability: learnability; efficiency; memorability; and errors. The dimensions to test organizational usability are accessibility, compatibility, integrability in to work practices, and social-organizational expertise.
Saracevic's evaluation of DLs is based from 80 or so previous studies of DL evaluation. The focus was to isolate (or deconstruct) the studies based on their construct, context, criteria, and methods used for study. The author even goes on to group literature on DLs evaluation in two categories; meta (about literature), and object (on literature).
Scheiderman and Plaisant's chapter on interactive system usability emphasizes the importance of making digital objects appear simplistically, which is actually a very complicated process and takes more care than most people acknowledge. Nelson also goes in to some detail about the future of technology, and how the nature of digital information is transitioning to be mobile, such as in mobile apparatuses and the planting of computer chips under people's skin.
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