Jyoti Singh .S.

Subject Gateways & Portal

Definition Subject gateways are Internet services which support systematic resource discovery. They provide links to resources (documents, objects, sites or services), predominantly accessible via the Internet. The service is based on resource description.

•Concept

Browsed Searched Quality Controlled

Origin

Beyond Book Marks (Mckiernan, 1996).DESIRE I (Development Of a European Service for Information On Researchers and Education) (1997)

DESIRE II (1999-2000)

•Characteristics

Online serviceIntellectual ProcessSubject Description Facilitates Navigation Series of Meta DataBibliographic Meta Data Print and Electronic Resources

objective

Promote Provide Current Information Provide Access to online & CD.ROM Provide quality of information Provide links of number of other site or document

Search Engine v/s Subject Gateways

Search Engine Subject Gateways

General resources are available It is a gathering place of discipline specific resources.

It totally depends on the powerfulness of the selected search engine along rhythm.

High leveled of human input is there, as selected resources must meet a number of criteria applied by a librarian or academic, who ensure that only high quality ,relevant resources are included in the database.

The result can be overwhelming, unmanageable ,full of irrelevant references and are often too creative to meet user need.

The result are specific, precise, and linked to relevant documents.

•Why library should go for subject Gateways?

Natural MetaphorBrowsing ,Reference desk.Guiding & helping users.

• Initiative of subject gateways

Libraryspot.com:(http://www.libraryspot.com/)Liberians `index to the internet(LII) (http:lii.org/)Argus clearing House(http://www.clearinghouse.net/)Galaxy(http://galaxy.einet.net/)

•TypesGeneral Subject gateways::Google Directory Yahoo! Directorywwwvirtual library

Academic Subject gateways::Ipl.org( Internet public library)InfomineAcademic info

Benefit & Limitation

Benefit LimitationProvide Connectivity Expandability

Competitive Bidding Dissimilar Concept

Isolation Configuration and programming

Interconnection

What is portal• Portal provide diverse information in a unique and Unified way.• Portlet: Area dedicated on the Portal for displaying information.• It is a single point of access to information from different sources.

Need

• Cope with growing demand of user.• For resolving information overload encountered by the user.

What a Portal Does

Enable Universal log in Integration to other systemFacilitates messaging and notification Facilitates multi-channel consistency

Feature

SecurityAccess different dataSearch Personal contentPublish Content

What a portal is not

InternetExtranetGroupwareKnowledge management solutionGroupware

Types

Major portal contenders

Alta vistaExcite InfoseekLycosMicrosoft internet startYahoo

What is future trend?

•Hype cycle:- Graphic representation of maturity, adoption and social application of specific technologies.• Future growth of Portals have been greatly shown in the hype cycle reports. • Analyst’s reports had inquire the future development of portals.