Mrežnik is a web portal of selected electronic information sources intended for searching scientific, professional and study literature for users of the National and University Library (NUK), other libraries of the University of Ljubljana (UL) and the general public. The Mrežnik web portal is currently being redesigned by the NUK. To better understand the current state of the prototype, we conducted two studies and limited them to students and employees of the UL. By use analysis, we determined the trend of using the Mrežnik web portal, its remote access services and information sources. The results showed that percentage of the UL, CTK and NUK libraries users is gradually decreasing, but the year 2020 represents a general turning point in all the results of the analysis, which was marked by the epidemic. The user interface was evaluated using the expert study method. Based on the findings, we designed three scenarios to identify potential problems for users interacting with the system. The results of the expert study indicate that Mrežnik does not include important elements of the web portal (personalization, aggregation search, collection of specific statistics and adaptation of the interface to people with visual and hearing impairments). The findings of the master's thesis include an insight into the current state of the prototype of the Mrežnik web portal and recommendations for changes.
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