I've had a hard time "getting" RDF (e.g. how it differs from XML), but this article helps give it context. The semantic web is being built simultaneously from the bottom up and top down. Typifying the bottom-up approach, RDF content is machine-readable at the outset; powerful but complex (with several advantages over microformats), RDF is all about inter-operability. Top-down approaches introduce "metadata sprinkling" to existing content, simple but limiting by comparison e.g. microformats (using CSS class attributes as in hCard), or meta elements (meta tags such as those for geo-discovery). Both approaches are valid, but RDF is hard whereas microformats help "the rest of us" contribute to the semantic web. There may be a collision ahead, however, between microformats and RDFa (sprinklings of RDF embedded in existing XHTML).
Tag archive for 'webdev'
Dr Bruce McKenzie is now available for freelance consultancy as a clinical knowledge architect, addressing the unmet need for usable knowledge resources at the point-of-care in UK general practice. General practitioners (GPs) make more decisions in a day than a typical business executive, and these decisions cost not just money but potentially lives. It's challenging work, and you can but hope your decisions are based on good information. The problem is information overload and access to what you need when you need it: there's just too much and it's too hard to find in the context of a 10 minute consultation. As a GP for 10 years I can relate to this. I also have informatics knowledge and experience, and this puts me in a position to offer you solutions that are built the way a doctor would design them.
Continue reading 'Clinical knowledge architect for hire'
Microsoft Silverlight is a proprietary cross-browser, almost cross-platform (not yet Linux), and cross-device (WM6 & Symbian only) plug-in vaguely tasked with "delivering the next generation of .NET based media experiences and rich interactive applications for the Web." The developer tools (Windows or Mac) output interactive text, bitmap images, vector graphics, animations, and video (WMV)/ audio (WMA and MP3) playback, in competition primarily with Flash. The plug-in is free (v2 is currently in beta) & curiously you can download the Getting started video in QuickTime for iPod! More here.
A customised version of iBox is used extensively on bioneural.net (e.g. the Flickr photocast here) and iBegin have just released version 2. This free JavaScript lets you display automatically scaling images, external documents, or embedded containers in an overlay dialog without needing to reload the page. iBox has gained some weight since v1.2.1 (2006) but remains compact compared to other Lightbox-alike solutions and just as simple to use, now boasting wider browser support and new plug-in capabilities (e.g. for embedding YouTube videos). In most cases it degrades gracefully when JavaScript is disabled (it won't display hidden inline containers; JavaScript is required to play YouTube videos).
Geotagging (or geocoding if you prefer) is the act of associating your content (blog posts, photos, feeds, etc.) with a geographic location (e.g. via latitude and longitude co-ordinates). Thus tagged authors can "mash" their content together with the likes of Google Maps, or the Flickr Map if photography is your thing. However, co-ordinates are typically encoded within metadata (or microformat) tags making them visible to machines but hidden from people. We have de facto web standard icons to help identify feeds, OPML, and sharing—so why not for geotagged content?
Continue reading 'A web standard icon for geotagging'
So you fancy using some of that über-cool draft CSS3 that WebKit browsers can handle, such as text shadows, drop shadows, opacity and rounded corners? But at the same time you want to present only valid CSS to the W3C CSS Validator? It's a dilemma, but it is possible to have your cake and eat it too—albeit by hiding CSS in JavaScript and thus cheating the Validator. However, there is even a precedent for doing so.
Continue reading 'How to safely inject CSS3 using jQuery'
