LabSpace provides access to experimental educational tools for learners and educators, research into open educational resources field and ability to download, remix and upload OER materials and is part of the free Open University OpenLearn initiative. Members can access video conferencing, knowledge map, messaging tools and collaborate with other users
Hi Gangs, Google's long-awaited Knol system is finally up and running: http://knol.google.com/ It's a beta test version and running kinda slow, with a big wish-list of things-to-do already, but it looks very promising at this writing.
Differential logic is the component of logic whose object is the successful description of variation — for example, the aspects of change, difference, distribution, and diversity — in universes of discourse that are subject to logical description. In formal logic, differential logic treats the principles that govern the use of a ''differential logical calculus'', that is, a formal system with the expressive capacity to describe change and diversity in logical universes of discourse.