“…Domain knowledge is also one of the most significant elements for PEOU in digital library usage (e.g., Park et al, 2009; Hong et al, 2002). Domain knowledge enables users to formulate more sophisticated and accurate search terms (Linde & Bergstrom, 1988; Marchionini, Dwiggins, Katz, & Lin, 1993; Meadow, Wang, & Yuan, 1995; Wildemuth, 2003), and it enables them to make more efficient use of the database systems in extracting relevant information. Subsequently, empirical studies show that those with system experience and domain knowledge are likely to perceive the digital library as easier to use (Wildemuth, 2004; Hong et al, 2002).…”