It is not possible to have a general ontology for e-learning because the design of an ontology is oriented with its use.

Hi Nabila

I've found a couple of links that you might find useful as they include diagrams showing the flow of the data and knowledge and setup.  Hope these are of use to you.

http://www.sciencedirect.com/science/article/pii/S1319157814000081

http://www.iaeng.org/publication/IMECS2012/IMECS2012_pp585-588.pdf

https://www.researchgate.net/profile/Abdulmotaleb_El_Saddik/publication/4031946_A_Web_services_oriented_framework_for_dynamic_e-learning_systems/links/0deec522a89cb79dd9000000.pdf 

Conference Paper A Web services oriented framework for dynamic e-learning systems

Thank you, very helpful suggestions.

Usually ontologies are models of some domain, more or less general, including foundational ontologies, like DOLCE. Are you asking for an ontology, modeling/representing all e-learning process, their structural moments (components), relations, etc., and their concrete instantiations, including, maybe semantic, web services?

Thank you for your answers. I am looking to find e-learning web services (or resources) following what they offer: authoring tool, assessment tool, etc. I thought that an ontology that described all e-learning resources/ web services can help. I knew there in a thesaurus at http://www.tel-thesaurus.net/tel/ but an ontology with semantic links will be more useful. 

The Learning Resource Metadata Initiative may be of interest: http://www.lrmi.net/

Hi Nabila,

Not sure if it exactly an ontology - but you could consider the following work which categorised online learning. 

Garrison, R. (2000). Theoretical Challenges for Distance Education in the 21st Century: A Shift from Structural to Transactional Issues. International Review of Research in Open and Distance Learning, 1(1).

Regards, Kevin.