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Developing Search Strategies. Jill Crawley-Low, Veterinary Medicine Library, University of Saskatchewan . Developing Strategies for Searching Electronic Resources. clearly define the question & concepts consider the vocabulary organize the terms construct the search statement
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Developing Search Strategies Jill Crawley-Low, Veterinary Medicine Library, University of Saskatchewan
Developing Strategies for Searching Electronic Resources • clearly define the question & concepts • consider the vocabulary • organize the terms • construct the search statement • decide which databases to search • execute the search
Clearly Define the Question • example of a precisely worded question: • “are there articles on mycorrhizal symbioses in vascular plants written in the last 5 years?”
Identify the Main Concepts in Your Question • “are there articles on mycorrhizal symbioses in vascular plants written in the last 5 years?” • mycorrhizal symbioses • mycorrhizas • vascular plants • 2000+
Consider the Vocabulary • forms of keywords – mycorrhiza, mycorrhizal, mycorrhizas • synonyms – mycoflora, fungal flora • truncation • ? replaces one character • * replaces more than one character
Organize the Terms • free-text or index searching • Boolean operators (AND, OR, NOT) • Parentheses
Boolean Operators • most search engines don’t allow natural language - use keywords or key phrases and combine them with Boolean operators • and retrieves records containing both terms (narrows a search) • or retrieves records containing either term (broadens a search)
Parentheses • allow you to control the order in which keywords or key phrases are searched • all search statements containing “and” plus “or” in the same sentence must use parentheses to control search order
Free Text or Index Searching • enter keywords or phrases • e.g. vascular plants or mycorrhiza • search for terms in specific fields • e.g. king in au, vascular plants in ti
Construct the Search Strategy • “are there articles on mycorrhizas or mycorrhizal symbioses in vascular plants written in the last 5 years?” • (mycorrhizas or mycorrhizal symbioses) and vascular plant? and py>=2000
Determine Which Databases to Search • Microbiology Abstracts: Algology, Mycology & Protozoology – references in biological life sciences, medicine, and microbiology http://www.csa.com/factsheets/microbiology-c-set-c.php • Web of Science - citation databases contain the references cited by the authors of the articles, also use these references to do cited reference searching- find articles that cite a previously published work http://scientific.thomson.com/media/scpdf/ba_qrc_11_15.pdf • Biological Abstracts - coverage of worldwide journal literature in the life sciences including agriculture, biochemistry, biotechnology, ecology, immunology, microbiology, neuroscience, pharmacology, public health, and toxicology http://www.biosis.org/media/pdf/qrc/BIOSIS_on_SilverPlatter_QRC.pdf