While it is possible to get worm densities up to as much as 20 kg/m 2 or 4 lbs per square foot (Edwards, 1999), the most common densities for vermicomposting are between 5 and 10 kg/m 2 (1 to 2 lbs per ft 2).
A massive open online course (MOOC) is a model for delivering learning content online to any person who wants to take a course, with no limit on attendance. A short video about MOOCs and the connected age. Recent Spotlight.
While the MOOC concept is already quite popular in academia, SAP is one of the first companies to adopt it for business-related training purposes. Other than traditional e-learning formats, openSAP courses return to tried and trusted classroom concepts and transfer them to an online medium in the following way: