Distributed Architecture For Context Modeling Based E-Learning System

Simulation-based e-learning allows students to use models imitating the real processes and thus accumulate knowledge and experience acquired in the process of active learning. This paper presents the advanced architecture of virtual interactive e-learning system TestTool that is under development in Kaunas University of Technology. TestTool system is implemented as an assessment and graphic modeling engine and is based on architecture of distributed services that is expected to transform to service oriented architecture in the future. The system consists of operation center and resource repository services that are accessible through admin, author and student client programs. In particular, context models are used for construction and assessment of graphic models that are available during learning process. Context models are created using additional design module that can be used as TestTool subsystem. These models describe the subject domain by using contextual graphs and feature diagrams. The employment of context model helps experts to simplify and speed-up the creation of effective graphic models for any given subject and to ensure proper and just-in-time up-/reskilling that can be used in continuous process of education and training.