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' academic search complete , proquest dissertation

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EXAMPLE: anorexia nervosa and not bulimia ... eliminate an article titled, 'Anorexia Nervosa Proves to Be More Dangerous than Bulimia' ... – PowerPoint PPT presentation

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Title: ' academic search complete , proquest dissertation


1
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2
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  • ?. ??? ?? ????? ( academic search complete ,
    proquest dissertation
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3
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And , or , not
????? physics
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4
Boolean Operators
  • OR
  • The connector OR broadens a search, retrieving
    all records containing at least one of the search
    concepts entered. The OR connector is very good
    for linking synonyms or related concepts in order
    to retrieve as much relevant information as
    possible.
  • EXAMPLE anorexia or bulimia

5
Boolean Operators
  • AND
  • The connector AND narrows a search, retrieving
    only those references containing at least one
    term from each concept. The AND connector is very
    good for narrowing a search to the specific topic
    being researched.
  • EXAMPLE (anorexia or bulimia) and college
    students

6
Boolean Operators
  • NOT
  • The connector AND NOT (NOT in some databases)
    also narrows a search, removing all references
    that contain a particular word or phrase.
  • EXAMPLE anorexia nervosa and not bulimia

Be especially careful when using the operator
NOT in the previous example, you would eliminate
an article titled, "Anorexia Nervosa Proves to Be
More Dangerous than Bulimia". Use the NOT
operator very judiciously to eliminate only those
terms which, if retrieved, would contaminate or
corrupt the search results.
7
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9
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  • www.eul.edu.eg
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  • www.eulc.edu.eg

10
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    )
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  • ?/ ????? ???? ???? ( ??????
    )0117848866
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    0105315295) ???? ????? ???????? ????????
  • ? / ????? ??? ?????? ( ??????
    0125963800)
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11
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