The repository is organised into communities, subcommunities and collections. The structure is based on the organisational structure of Leibniz Universität Hannover:
Publications are stored in the collections. A collection may contain an unlimited number of publications. It is possible for a publication to be assigned to various collections.
The following options are available for searching for publications in the repository:
Browsing generates a list of items sorted by various criteria.
Browsing by communities & collections generates a complete list of all communities, including their associated subcommunities and collections. You can opt for publications assigned to individual communities, subcommunities or collections to be listed alphabetically by title or chronologically by date of publication.
You can also browse communities, subcommunities and collections by author’s name or keywords. A full text search is also available in the communities and collections.
Browsing by author generates an alphabetical list of all authors who have published documents in the repository. By selecting an author, you will obtain a list of all publications by this author in the repository, which can be sorted by title or date.
Browsing by date of publication generates a list of all publications in the repository sorted by year of publication. By entering a certain year, you will obtain an overview of publications restricted to this period.
Browsing by keywords generates a list of all author keywords and controlled keywords used as descriptors for publications in the repository. The number next to the keyword shows how many items are available with the respective keyword.
By selecting a keyword, you will obtain a list of all related publications in the repository, which can be sorted by title or date.
Browsing by classification codes generates a list of all of the classification codes (Dewey Decimal Classification) which were assigned to publications in the repository. The number next to the classification code shows how many items are assigned to the same classification code (and therefore a related topic). By selecting a code you will obtain a list of all related publications in the repository, which can be sorted by title or date.
This is how it works:
First browse by keywords. Clicking on "0-9" in the keyword register will generate a hierarchical list of all classification codes assigned to publications in the repository. Now select the classification code that comes closest to your search criteria. You will then automatically obtain an overview of all off publications in the repository assigned to this classification code.
The simple search function can be found under Search and discovery. Here are some tips for more effective searching:
The word(s) entered in the search box will be searched in all of the available metadata fields (e.g. title, author, abstract, keywords). The search term will also be searched for in the full text version of all documents.
You can also narrow down your search to a certain community, subcommunity or collection.
Searches in the repository are unicode compatible, which means that umlauts, diacritics and non-western characters (e.g. Chinese characters) can be entered and found if they are contained in the metadata or full text.
No transcription can be carried out when entering a search term. Equivalent characters will not be resolved: the German term Bewässerung will be unable to find the resolved version of the term, namely Bewaesserung. Likewise, entering the term Straßenbau will not produce results for Straßenbau, and so on. No distinction is made between upper and lower case (euro will find both Euro and euro), not even in phrase search.
The search engine automatically expands words with common endings to include plurals, past tenses, etc., which means a search for analyse will also retrieve analysed.
Using an asterisk (*) after a word stem will generate all words that start with that root. For example, analy* will retrieve analytical and analysis. The asterisk can also be used as a wild card to replace any number of letters within a word: analy*e will retrieve analyze and analyse.
To search multiple words as a phrase, place quotation marks around the phrase, e.g. "share economy". You can also use phrase search for individual search terms to prevent stemming, e.g. "biodiversity".
You can use the following Boolean operators to combine search terms. Please note that all Boolean operators have to be entered in CAPITAL LETTERS.
AND is used to narrow down the search to items containing all of the search terms combined with this operator. For example, "biodiversity AND analysis" will retrieve all documents that include both terms "biodiversity" and "analysis".
OR is used to widen the search to items containing one or more search terms combined with this operator. For example, "biodiversity OR analysis" will retrieve all documents that include the term "biodiversity" as well as all items containing the term "analysis", or both terms.
Note: There is no need to type the Boolean operator OR to combine search terms. OR is the default operator. In other words, entering "biodiversity analysis" will retrieve the same hits as "biodiversity OR analysis".
NOT is used to exclude certain terms. For example, "biodiversity NOT analysis" will retrieve all items that contain the term "biodiversity", but not "analysis".
(Parantheses) can be used to nest query terms within other query terms. For example, "(biodiversity OR analysis) AND (ecosystem OR city)" will retrieve all documents containing "biodiversity" or "analysis" (or both) as well as "ecosystem" or "city" (or both).
Stop words such as a, and, are, as, at, be, but, by, for, if, in, into, is, it, no, not, of, on, or, such, the, to, are not searched. They are ignored in the search process.
The advanced search enables you to search in specific fields (e.g. author or title). Moreover, it is possible to narrow down your search to a specific community, subcommunity or collection.
If you want to restrict your search to a specific field, select "Add filters". Use the drop-down menu to specify which field (e.g. title, author) you would like to search and whether or not the search string should be included.
You can use the symbols +- to add or delete fields. The Boolean operator AND is set as the default for combining fields.
The following fields can be searched and combined:
Entering one or several keywords from the title of the publication will result in a list of all publications containing these keywords, which can be sorted by relevance, title (in ascending or descending order) or date of publication (in ascending or descending order).
You can enter several search items in a field and combine them using the Boolean operators AND, OR or NOT. The default operator is OR.
Entering the name of the author in the order of the surname followed by the first name will result in a list of all publications by this author, which can be sorted by relevance, title (in ascending or descending order) or date of publication (in ascending or descending order).
You can enter several names in a field and combine them using the Boolean operators AND, OR or NOT. The default operator is OR.
Entering a keyword will result in a list of all publications that were tagged with this keyword, which can be sorted by relevance, title (in ascending or descending order) or date of publication (in ascending or descending order).
You can enter several search terms in a field and combine them using the Boolean operators AND, OR or NOT. The default operator is OR.
Entering the date of publication will result in a list of all publications from that year, which can be sorted by relevance, title (in ascending or descending order) or date of publication (in ascending or descending order). The year (e.g. 2015) simply has to be entered.
You can enter several years in a field and combine them using the Boolean operators AND, OR or NOT. The default operator is OR.
All documents in Leibniz Universität Hannover Institutional Repository contain a legal notice stating how the publication may be used.
It may be a free license, such as a Creative Commons license. In this case, you will also find a link to the license text stating the conditions under which the publication may be used and shared.
If no special license has been granted, you will find a reference to copyright law, which will usually allow you to use the document, but not to edit or distribute it.
The repository’s metadata can be used freely and imported into other systems. Please note our Nutzungsbedingungen in this connection.