Google has the most comprehensive database, but it still can ’ t index every page on the web. There are two reasons for using other search engines as well: They may come up with results not found on Google. They may give users more sophisticated ways of refining their searches.
UC Berkeley recommends these two for serious “ deep digging ” .
These may be called Internet catalogues, subject guides, virtual libraries or gateways. They specialise in resources from a particular field, and tend to be searchable as well as organised into a hierarchical format. Some of them work like a catalogue resource for a particular field, whilst others are catalogues of catalogues. They are always compiled by people (rather than indexed automatically) who organise information according to a classification system. This means you can expect the items that are listed to have been sifted and evaluated for their relevance and quality.
These are just some examples of information gateway-type resources. Eldis offers a large collection of resources for 40 development-related sectors. Development Gateway is an information gateway developed by the World Bank. The WWW Virtual Library is run by a loose grouping of volunteers, who compile pages of key links in their areas of expertise. SOSIG is an information gateway which provides links to high-quality resources in the Social Sciences. If appropriate, replace these examples with ones relevant to the group you are working with.
E resources on social science & humanitie
Efficacy of E-resources on Social Science & Humanities Research Jayatunga Amaraweera Member The NSF National Committee on LISAugust 20, 2012 1
What is research?• “A careful, systematic , patient study and investigation in some field of knowledge, undertaken to establish facts or princilpes” (Grinnell, 1993:4)• It is a discovery (Rediscovery); A voyage from the known to the unknown• An effort to be closer to the truthAugust 20, 2012 2
What is Research ?• A detailed study of a subject, especially in order to discover (new) information or reach a (new) understanding. (Cambridge Dictionaries Online, 2003.)• Systematic investigation to establish facts or principles or to collect information on a subject ( www.thefreedictionary.com)• Organized study: methodical investigation into a subject in order to discover facts, to establish or revise a theory, or to develop a plan of action based on the facts discovered ( www.bing.com/Dictionary)August 20, 2012 3
Definition – Electronic SourcesCollection of Documents, Data, and other Writtenmaterial stored in Electronic “ Libraries “ orDatabases, and available Electronically. URL: http://www.gc.maricopa.edu/kschwalm/ccguide/defs.htmlAugust 20, 2012 4
Electronic ResourcesElectronic Resources represent an increasingly important componentof the collection-building activities of libraries. “Electronicresources” refer to those materials that requirecomputer access, whether through a personal computer, mainframe,or handheld mobile device. They may either be accessed remotely viathe Internet or locally.Some of the most frequently encountered types are:· E-journals· E-books· Full-text (aggregated) databases· Indexing and abstracting databases· Reference databases (biographies, dictionaries, directories,encyclopaedias, etc.)· Numeric and statistical databases· E-images· E-audio/visual resources(IFLA Guide,2012) August 20, 2012 5
Electronic Reference Sources Off-line Ref. Sources: Most of these materials appear as CD-ROMs, on Diskettes ,VCDs or DVDs, sometimes as e-cards eg. CBSL Bulletin ; Annual Reports of Banks On-line Ref. Sources: Institutional & Personal Websites OPACS & WebOPACS Electronic Databases E-Publications: e-books ; e-journals ; e-prints ; e-articles full-text ; e-Abstracts & Indexes ; journal Archives Multimedia materials on-lineAugust 20, 2012 6 On-line Tutorials
Internet : Surfing the Web : Search EnginesAltaVistathe fast and accurate search engine from digital producesresults within seconds Exciteconcept-based search of the web, usenet, news, and site reviewsHotBotexpansive web database complimented by advanced searchcapabilities MetaCrawler offers comprehensive and fast parallel search capability of popular databases SavvySearchmulti-lingual keyword search of various information resources on the netAugust 20, 2012 7
Search engines Search engines are popular tools for locating web pages, but they often return thousands of results. Search of e-resources are more effective if you know how to talk to the computer systems. Communicating with these systems requires knowing certain basic search techniques. August 20, 2012 8
Major Search Engines• Google http://www.google.com/• AltaVista http://www.altavista.com/• alltheweb http://www.alltheweb.com/August 20, 2012 10
A Search Engine – eg. Google(Google Search Engine) URL: http://www.google.com/ August 20, 2012 11
Basic Google Search Screen Title of Web Page URL- the website address Choose what Set your to search preferences Enter Automatically search takes you to terms here the first site in results Click here when Can choose to Get more help ready to start search only with your search Canadian sites searchingAugust 20, 2012 12
What is an e-database?Definition:An e-database is an organized collection of information, of aparticular subject or multi-disciplinary subject areas.The information of an e-database can be searched and retrievedelectronically.Coverage:Contents include journal articles, newspaper articles, book reviewsand conference proceedings, etc.Update frequency:Usually updated on a daily, weekly, monthly or quarterly basis.Types of e-databases: Full-text vs. BibliographicFull-text databases contain the whole content of an article such ascitation information, text, illustrations, diagrams and tables.Bibliographic databases only contain citation information of anarticle, such as author name, journal title, publication date and pagenumbers. August 20, 2012 26
Online Databases• What are online databases? Online databases are Web-based electronic indexes that enable you to locate and retrieve articles in magazines, journals and newspapers.August 20, 2012 27
Information Gateways • Information gateway-type resources include Internet catalogues, subject directories, virtual libraries and gateways • Specialising in resources on a particular field • Usually searchable AND • Organised into hierarchical subject categories • Compiled by people, not robots • More focus on sifting for relevance and quality Good For: topics that fall into a thematic area that has a subject directory, guided browsing in your subject area Not Good For: Quickly finding information from widely varying themesAugust 20, 2012 34
Information Gateway Examples • ELDIS: the Gateway to Development Information http://www.eldis.org/ • Development Gateway http://www.developmentgateway.org/ • World Wide Web Virtual Library http://www.vlib.org/ • SOSIG (Social Science Information Gateway) http://www.sosig.ac.uk/August 20, 2012 35
A Social Science Gateway - Sosig Social Sciences: SOSIG: subject coverage: Social Sciences Social Sciences Information gateway, an Internet gateway to quality resources for Social Sciences. http://www.sosig.ac.uk/August 20, 2012 36
A sample of a Gateway (Gateway for world Libraries) http://www.libdex.com/August 20, 2012 37
What is a portal? Technically, a portal is a network service that brings together content from diverse distributed resources using technologies such as cross searching, harvesting, and alerting, and collate this into an amalgamated form for presentation to the user. This presentation is usually via a web browser, though other means are also possible. For users, a portal is a, possibly personalised, common point of access where searching can be carried out across one or more than one resource and the amalgamated results viewed. Information may also be presented via other means, for example, alerting services and conference listings or links to e-prints and learning materials.August 20, 2012 43
Sri Lanka Govt. Web Portal[ http://www.gov.lk/ ]August 20, 2012 44
SL –Web Portal (Sinhala)[http://www.gov.lk/gov/index.php?option=com_cat&Itemid=63&lang=si August 20, 2012 45
SL Web Portal (English)[http://www.gov.lk/gov/index.php?option=com_cat&Itemid=63&lang=en August 20, 2012 46
Web Portal – Education in Sri Lankahttp://www.lankalinksystems.com/directory/frames/eduframe.htm August 20, 2012 47