Knowledge sharing has become an important issue that
challenges the efficient healthcare delivery in eHealth system. It also rises
as one of the most demanding applications with reference to dynamic
interactivities among various healthcare actors (e.g. doctors, nurses,
patients, relatives of patients). In this paper, we suggest an activity theory
based ontology model to represent various healthcare actors. The goal of the
suggested model is to enhance interactivities among these healthcare actors for
conducting more efficient knowledge sharing, which helps to design eHealth system. To validate the
feasibility of suggested ontology model, three typical use cases are further studied.
A questionnaire based survey is carried out and the corresponding survey
results are reported, together with the detailed discussions.
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