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1 Dave Inman Project Research
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2 Process of Research Literature search Refine search Literature review More focus
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3 Timescale Start early in life of project Intensive in months 1-2 On-going throughout first semester Further research in semester 2
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4 Sources Past projects Books Library Friends Tutors Journals / magazines Library Web Tutor / friend recommended sites Search engines
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5 Past projects
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6 LISA (www.lisa.sbu.ac.uk)
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7 Search for Journals
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8 Journals in Computing
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9 Electronic Journals
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10 Database Cross- Searching Many subjects are cross-disciplinary and so the ability to search across several databases is a useful time-saver. http://www.sosig.ac.uk/
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11 Library catalog
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12 Web Search Engines Two kinds: Manually updated (e.g. Yahoo!) Auto updated (e.g. AltaVista)
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13 Links to Search Engines http://www.sbu.ac.uk/home/gateways.shtml
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14 Links to Search Engines http://www.sbu.ac.uk/home/gateways.shtml
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15 Search Engine Display Chart
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How can you search more effectively? Plan your search in advance Become familiar with advanced search concepts Learn to use search engine features & search syntax Review and refine your searches
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Overview of Search Concepts Boolean Operators - AND, OR, NOT lions AND tigers cheetahs OR jaguars NOT cars Field and phrase searching “Safari Corporation Inc.” title: "Safari Corporation Inc.” Truncation using wildcard symbol lion* Parentheses (lions OR tigers) AND (zoos OR parks)
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Example Search Topic The possible link between mobile phones and brain tumours ("mobile phone*" OR "cellular phone*") AND ("brain tumour*" OR "brain tumor*")
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Search Engine Issues Complex Boolean searches do not work on all search engines Different search engines have different features and syntax Case sensitivity - use lowercase unless searching for a proper name
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Searching Features Complex queries (Boolean, parentheses, truncation etc) supported to varying degrees Almost universal: Use of + and - signs eg +jaguars -cars Phrase searching using double quotes " " Stemming - sometimes automatic Field searching and limits title, url, date, language, domain May be in separate "advanced" search page May be in form of menus or check-lists
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Relevancy Ranking Factors used to rank results: Number of occurrences of word(s) on page Where the word(s) occur ie more important if found in title or at top of page Page contains all words Words found near or next to each other Link popularity - sites ranked higher if they have lots of other sites linking to them
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22 Intelligent Agents: WiseWire An ‘agent’ you can train with your preferences http://wires.wisewire.com/
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23 Google Uses citations or "backlinks". A page is ranked as important if lots of other pages point to it. A page will be ranked more highly if lots of other pages with high ranking point to it. Google! Looks at over a billion links. Also try Google Print (http://print.google.com/) for finding info in books Also Google Scholar (http://scholar.google.com/) for academic work
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24 http://www.zotero.org/
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25 References Chapter 4 of : Dawson, C.W. - Computing projects: A student's guide - Prentice Hall 2000 Parts © Netskills,University of Newcastle http://www.netskills.ac.uk/ Web tutorial on ICT research (http://snurl.com/projsources)
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