Tech all over the world: W3C Public Newsletter, 2009-04-27

Tuesday, April 28, 2009

W3C Public Newsletter, 2009-04-27

Dear W3C Public Newsletter Subscriber,

The 2009-04-27 version of the W3C Public Newsletter is online:
http://www.w3.org/News/Public/pnews-20090427

A simplified plain text version is available below.

Ian Jacobs, W3C Communications Team
-----------------------------------

Last Call: OWL 2

The OWL Working Group has published new Working Drafts for OWL 2, a
language for building Semantic Web ontologies. An ontology is a set
of terms that a particular community finds useful for organizing
data (e.g., for data about a book, useful terms include "title" and
"author"). OWL 2 (a compatible extension of "OWL 1" ) consists of 13
documents (7 technical, 4 instructional, and 2 group Notes). For
descriptions and links to all the documents, see the " OWL 2
Documentation Roadmap." This is a "Last Call" for the technical
materials and is an opportunity for the community to confirm that
these documents satisfy requirements for an ontology language. This
is a second Last Call for six of the documents, but because the
changes since the first Last Call are limited in scope, the review
period lasts only 21 days. For an introduction to OWL 2, see the
four instructional documents: an "overview," "primer," "list of
new features," and "quick reference." Learn more about the
Semantic Web.

http://www.w3.org/2007/OWL
http://www.w3.org/TR/2004/REC-owl-features-20040210/
http://www.w3.org/TR/2009/WD-owl2-overview-20090421/#Documentation_R
oadmap
http://www.w3.org/2007/OWL/wiki/Changes_Since_December_2008
http://www.w3.org/TR/2009/WD-owl2-overview-20090421/
http://www.w3.org/TR/2009/WD-owl2-primer-20090421/
http://www.w3.org/TR/2009/WD-owl2-new-features-20090421/
http://www.w3.org/TR/2009/WD-owl2-quick-reference-20090421/
http://www.w3.org/2001/sw

HTML 5, Differences from HTML 4 Drafts Published

The HTML Working Group has published a Working Draft of "HTML 5."
HTML 5 adds to the language of the Web: features to help Web
application authors, new elements based on research into prevailing
authoring practices, and clear conformance criteria for user agents
in an effort to improve interoperability. This particular draft
specifies how authors can embed SVG in non-XML text/html content,
and how browsers and other UAs should handle such embedded SVG
content. See also the news about moving some parts of HTML 5 to
individual drafts. The " full list of changes" since the previous
draft are listed in the updated companion document "HTML 5
differences from HTML 4." Learn more about the HTML Activity.

http://www.w3.org/html/wg/
http://www.w3.org/TR/2009/WD-html5-20090423/
http://www.w3.org/News/2009#item60
http://www.w3.org/TR/2009/WD-html5-diff-20090423/#changes-2009-02-12
http://www.w3.org/TR/2009/WD-html5-diff-20090423/
http://www.w3.org/MarkUp/Activity

Four Web Application API Drafts Published

The Web Applications Working Group has published four First Public
Working Drafts of specifications for APIs that enhance the open Web
platform as a runtime environment for full-featured applications:
* " Web Storage" provides APIs for persistent client-side data
storage by Web applications.
* "Web Workers" defines an API for enabling thread-like operations
(using message-passing) in Web applications, so that certain
application tasks can be run in parallel.
* " Web Sockets API" provides an API for full-duplex communication
between a Web application and a remote host.
* " Server-Sent Events" defines an API for opening an HTTP
connection for receiving push notifications from a server in the
form of DOM events.

The Web Storage, Web Sockets API, and Server-Sent Events
specifications were previously published as parts of the "HTML 5"
specification, but will now each become Recommendation-track
deliverables within the Web Applications Working Group. Learn more
about the Rich Web Client Activity.

http://www.w3.org/2008/webapps/
http://www.w3.org/TR/2009/WD-webstorage-20090423/
http://www.w3.org/TR/2009/WD-workers-20090423/
http://www.w3.org/TR/2009/WD-websockets-20090423/
http://www.w3.org/TR/2009/WD-eventsource-20090423/
http://www.w3.org/TR/2009/WD-html5-20090423/
http://www.w3.org/2006/rwc/Activity.html

Widgets 1.0: APIs and Events Draft Published

The Web Applications Working Group has published a Working Draft of
"Widgets 1.0: APIs and Events." Widgets are full-fledged
client-side applications that are authored using Web standards.
Examples range from simple clocks, stock tickers, news streamers,
games and weather forecasters, to complex applications that pull
data from multiple sources to be "mashed-up" and presented to a user
in some interesting and useful way The APIs and Events specification
defines a set of APIs and events for the Widgets 1.0 family of
specifications. The specification allows application writers to
access widget configuration information, monitor changes in the
widget display, determine locale information, monitor updates to the
widget, and more. Learn more about the Rich Web Client Activity.

http://www.w3.org/2008/webapps/
http://www.w3.org/TR/2009/WD-widgets-apis-20090423/
http://www.w3.org/2006/rwc/

W3C Invites Implementations of Media Queries

The Cascading Style Sheets (CSS) Working Group invites
implementation of the Candidate Recommendation of "Media Queries."
HTML4 and CSS2 currently support media-dependent style sheets
tailored for different media types. For example, a document may use
sans-serif fonts when displayed on a screen and serif fonts when
printed. 'screen' and 'print' are two media types that have been
defined. Media Queries extend the functionality of media types by
allowing presentations to be tailored more precisely to device
characteristics. Learn more about the Style Activity.

http://www.w3.org/Style/CSS/members
http://www.w3.org/TR/2009/CR-css3-mediaqueries-20090423/
http://www.w3.org/Style/

CSS 2.1 Candidate Recommendation Updated

The Cascading Style Sheets (CSS) Working Group updated the Candidate
Recommendation of "Cascading Style Sheets Level 2 Revision 1 (CSS
2.1) Specification." CSS 2.1 is a style sheet language that allows
authors and users to attach style (e.g., fonts and spacing) to
structured documents (e.g., HTML documents and XML applications).
CSS 2.1 corrects a few errors in CSS2 (the most important being a
new definition of the height/width of absolutely positioned
elements, more influence for HTML's "style" attribute and a new
calculation of the 'clip' property), and adds a few highly requested
features which have already been widely implemented. But most of all
CSS 2.1 represents a "snapshot" of CSS usage: it consists of all CSS
features that are implemented interoperably. This draft incorporates
errata resulting from implementation experience since the previous
publication. Learn more about the Style Activity.

http://www.w3.org/Style/CSS/members
http://www.w3.org/TR/2009/CR-CSS2-20090423/
http://www.w3.org/Style/css2-updates/CR-CSS21-20070719-errata.html
http://www.w3.org/Style/

WWW2009 Opens with Tim Berners-Lee Keynote "Twenty Years"

Tim Berners-Lee, W3C Director and inventor of the Web, delivered the
opening keynote address at the WWW2009 Conference earlier today in
Madrid, Spain; keynote slides are available. During his talk, titled
"Twenty Years," he touched on the future as well, including topics
such as Web applications, open social networking and open linked
data. Shortly before his keynote, Berners-Lee joined Dame Wendy
Hall, Robert Caillau, Vint Cerf, Dale Dougherty and Mike Shaver on a
panel to share thoughts on the twentieth anniversary of the Web. W3C
encourages people to join the W3C track, which this year features
two "camps": the Mobile Widgets camps on 23 April and the Social Web
Camp on 24 April. Follow discussion on the #w3ctrack twitter feed.

http://www.w3.org/2009/04/w3c-track
http://www.w3.org/People/Berners-Lee
http://www2009.org/
http://www.w3.org/2009/Talks/0422-www2009-tbl/
http://www.w3.org/2009/04/w3c-track.html
http://esw.w3.org/topic/MobileWidgetsCampW3CTrack
http://esw.w3.org/topic/SocialWebCampW3CTrack

Eight Proposed Recommendations for XSLT, XPath, XQuery Published

The XSL and XML Query Working Groups have published eight Proposed
Edited Recommendations for Second Editions of "XSL Transformations
(XSLT)," "XQuery 1.0: An XML Query Language," "XML Syntax for
XQuery 1.0 (XQueryX)" and "XML Path Language (XPath) 2.0," together
with their supporting documents, "XQuery 1.0 and XPath 2.0 Data
Model (XDM)," "XQuery 1.0 and XPath 2.0 Formal Semantics," "XSLT
2.0 and XQuery 1.0 Serialization" and "XQuery 1.0 and XPath 2.0
Functions and Operators." The second editions, if approved, will
add the generate-id function from XSLT to XPath and XQuery, and will
also incorporate the outstanding errata, including a number of
clarifications that may affect implementations. Enhanced test suites
are being augmented and will be published shortly. Review welcome by
31 May 2009. Learn more about XML.

Last Call: "rdf:text Primitive Datatype"

The OWL Working Group and the Rule Interchance Format (RIF) Working
Group have jointly published a Last Call Working Draft of "rdf:text:
A Datatype for Internationalized Text." This datatype, compatible
with "XML Schema 1.1 Datatypes," is used within RIF and OWL 2 to
provide support for text in various languages and scripts
(identified by a BCP 47 tag such as "fr" for French). The document
defines the datatype, discusses its relationship to "RDF Plain
Literals" and the "XML Schema string datatype," and specifies
functions (compatible with "XPath" ) for operating on rdf:text data
values. It also discusses how to use this feature within RDF
serializations. Learn more about the Semantic Web.

http://www.w3.org/2007/OWL
http://www.w3.org/2005/rules
http://www.w3.org/TR/2009/WD-rdf-text-20090421/
http://www.w3.org/TR/xmlschema11-2/
http://www.rfc-editor.org/rfc/bcp/bcp47.txt
http://www.w3.org/TR/rdf-concepts/#dfn-plain-literal
http://www.w3.org/TR/xmlschema11-2/#string
http://www.w3.org/TR/xpath-functions/
http://www.w3.org/2001/sw/

First Draft: Usage Patterns For Client-Side URI parameters

The Technical Architecture Group has published the First Public
Working Draft of "Usage Patterns For Client-Side URI parameters."
The goal of this draft TAG finding is to initially collect the
various usage scenarios that are leading to innovative uses of
client-side URI parameters, along with the solutions that have been
developed by the Web community. As highly interactive applications
get built using Web parts (HTML, CSS and JavaScript component
resources) that are themselves Web addressable, there is an
increasing need for encoding interaction state as part of the URI.
The Web is beginning to discover and codify design patterns based on
fragment identifiers for many of these use cases. Learn more about
the Technical Architecture Group.

http://www.w3.org/2001/tag/
http://www.w3.org/TR/2009/WD-hash-in-uri-20090415/
http://www.w3.org/2001/tag/
Past home page news...

http://www.w3.org/News/

W3C Questions and Answers Blog
* Interview: Rotan Hanrahan on MobileAware Participation in W3C,
Role of Standards by Ian Jacobs
http://www.w3.org/QA/2009/04/interview_rotan_hanrahan_on_mo.html
* Past Q&A Blog ...
http://www.w3.org/QA/archive/

Upcoming Meetings

* More About Workshops...
http://www.w3.org/2003/08/Workshops/
* W3C Membership Meeting Calendar...
http://www.w3.org/Consortium/meetings

Upcoming Talks

* 3 May, Atlanta, GA, USA: Unleashing Opportunities through
Accessibility. Shawn Henry presents at STC Technical
Communication Summit.
* 4 May, Atlanta, GA, USA: Advancing Web Accessibility. Shawn
Henry presents at STC Technical Communication Summit.
* 7 May, Hammamet, Tunisia: Web Accessibility with WCAG 2.0:
International Cooperation, Local Implementation. Shawn Henry
gives a keynote at ICTA 2009 International Conference on
Information and Communication Technology & Accessibility.
* 7 May, Oslo, Norway: WCAG 2.0 - addressing the needs of people
with disabilities and older people.. Andrew Arch presents at Do
Web Accessibility Guidelines guarantee Universal Design?.
* 9 May, Hammamet, Tunisia: Improving Your Web Site with WCAG 2.0.
Shawn Henry gives a tutorial at ICTA 2009 International
Conference on Information and Communication Technology &
Accessibility.
* 26 May, Amsterdam, The Netherlands: Introduction to the Semantic
Web. Ivan Herman gives a tutorial at PhD School Course,
Netherlands Bioinformation Centre.
* 11 June, London, United Kingdom: De-Fragmentation & Apps in the
Cloud. Philipp Hoschka participates in a panel at Open Mobile
Summit 09.
* 15 June, San Jose, CA, USA: What is New in W3C Land?. Ivan
Herman presents at 2009 Semantic Technology Conference.
* 15 June, San Jose, CA, USA: Introduction to the Semantic Web.
Ivan Herman gives a tutorial at 2009 Semantic Technology
Conference.
* 16 June, San Jose, CA, USA: Introducing OWL 2. Ivan Herman
participates in a panel at 2009 Semantic Technology Conference.
* 17 June, San Jose, USA: XBRL and the Semantic Web. Dave Raggett,
Diane Mueller present at 2009 Semantic Technology Conference.
* 20 July, Seattle, WA, USA: Accessibility: It's for Everyone and
Everything. Shawn Henry presents at Web Design World 2009
Seattle.
* 21 July, Seattle, WA, USA: Accessibility in a Web 2.0 World.
Shawn Henry presents at Web Design World 2009 Seattle (discount
"Passport" registration code: S9W06).
* View upcoming talks by country
http://www.w3.org/2004/08/W3CTalks?date=Recent+and+upcoming&coun
tryListing=yes&submit=Submit
* More talks...
http://www.w3.org/Talks/

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