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Boolean operators AND, OR, NOT
When using basic search several search terms are automatically linked with and. For a more targeted search, it is recommended that you use Boolean operators to link several search terms.
AND: Document must contain all entered search terms: this search method is also applied when you enter several search terms that are separated by a space.
OR: Document must only contain one of the entered search terms. This function broadens the search area and is suitable if there are different terms for one topic.
boot OR trunk
NOT: This function has an exclusionary effect and can be used to limit the number of hits: Documents that contain one search term must not contain the other search term.
boot NOT trunk
The Boolean operators also work for advanced search. Here, they can be used to link several search terms within one search field. For example, the following search request returns all documents by the author “Mustermann” for the years 2002 or 2003:
Autor: Mustermann
Year: 2002 OR 2003
Wildcards
If you are unsure how to spell a search term, e.g. a certain name, or if you want to extend your search, you can use * and ? as wildcards. However, it is not possible to use the wildcards at the beginning of a search term.
Example 1: "librar**" returns "librarian", "library" or e.g. "librarians".
Example 2: "Ma?er" returns "Mayer", "Maier" or "Mager" and "Maler".
You can use double quotation marks (“) to perform a phrase search.
BROWSE
Furthermore, publications in KU.opus are also classified in different categories. Under the tab "Browse" the system can e.g. display the most recently published documents, publications of a faculty or chair or the allocation to different subject classifications.
