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1 Advances In Web Technologies Brian Kelly UK Web Focus UKOLN University of Bath

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Presentation on theme: "1 Advances In Web Technologies Brian Kelly UK Web Focus UKOLN University of Bath"— Presentation transcript:

1 1 Advances In Web Technologies Brian Kelly UK Web Focus UKOLN University of Bath B.Kelly@ukoln.ac.uk http://www.ukoln.ac.uk/

2 2 Contents About UK Web Focus End user developments: browsing searching Developments for information providers document management metadata structured documentation Technologies HTML HTTP Java Will it Take Off In Our Community? Aim of this talk: To outline major developments on the web To explain why they are important To identify possible barriers to their use

3 3 UK Web Focus UK Web Focus: National web coordination post for UK HE community Based at UKOLN, University of Bath Responsibilities include: –Technology watch –Information dissemination in variety of ways: –Workshops (national, regional) –Presentations at conferences and seminars –Online –Coordination activities –Representing JISC on W3C Brian Kelly appointed on 1st November 1996 –Involved with web since January 1993 –Previously worked at University of Newcastle, Leeds, Liverpool, and Loughborough

4 4 Web Visualisation Visualisation of a web site to aid end user navigation Why: To make navigation easier for end users To provide tailorable views (e.g. only show "personal home pages") Barriers: Lack of standards. Proprietary, licensed software. How: Web Collections Familiarisation: MAPA, NetObjects Fusion See also WebCutter at http://www6.nttlabs.com/ HyperNews/get/PAPER40.html http://www.dynamicdiagrams.com/

5 5 Light-weight Browsers Light-weight browsers such as Opera and Lynx are available Why: To support low spec PCs (e.g. 386 SX with 8MB and Win 3.1) Barriers: Costs ($10 for 100-500 copies), use of proprietary HTML How: Opera, Lynx, Bobcat Familiarisation: Free evaluation http://opera.nta.no/ http://www.operasoftware. com/ http://lynx.browser.org/ http://www.fdisk.com/ doslynx/

6 6 Better Searching (1) Why: Time wasted in searching Barriers: Lack of metadata standards. Lack of tools How: Dublin Core Familiarisation: Read UKOLN resources at http://www. ukoln.ac.uk/ metadata/ Take part in pilot

7 7 Better Searching (2) Application of heuristic techniques in searching Why: Time wasted in searching Barriers: Lack of organisational guidelines How: Heuristics. Consistency in URLs across institution Familiarisation: Ahoy! http://ahoy.cs. washington.edu:6060/

8 8 A Manageable Web (1) Use of metadata for site management Why: Site metadata on authoring tools, authoring methods, document types,.. Barriers: Lack of standards How: Dublin Core, PICS, XML,... Familiarisation: UKOLN metadata work, UCISA-TLIG work Metadata to assist with following requests: Find all pages created using Internet Assistant v1 Find all pages which use Jscript Find pages where author = {find author from departed-staff} Metadata to assist with following requests: Find all pages created using Internet Assistant v1 Find all pages which use Jscript Find pages where author = {find author from departed-staff}

9 9 Development of a Metadata Architecture Metadata - the missing architectural component from the initial implementation of the web Metadata PICS, TCN, MCF, DSig, DC,... Addressing URL Data format HTML Transport HTTP

10 10 Metadata Components PICS, Digital Signatures, Transparent Content Negotiation, resource discovery, website administration are all related to metadata Example Imagine you make your University prospectus available on the web. What metadata may be required? Use Of Metadata PICSResource accessible to users in Middle East, which ban unrated sites DSigDescription of course is a legally binding agreement TCNResource can transparently be accessed in HTML or PDF format Web Collections Print resource as single document Resource Discovery Search for Bath prospectus finds it Website Administration Use of review-by to find out-of- date material

11 11 A Manageable Web (2) Use of server side management techniques Why: Single copy to minimise maintenance Barriers: Performance, cost of software, Unix How: Server side includes, Familiarisation: MS Active Server Pages, Netscape SuiteTools, PHP/FI,... This resource is copyright... Adding code / text to static HTML resource: complex difficult to maintain Adding code / text to static HTML resource: complex difficult to maintain <#If useragent=netscape1.1 then else if useragent= …> Server side management tools: HTML resource clean easier to maintain Server side management tools: HTML resource clean easier to maintain

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