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In a 5-year longitudinal study, social support was investigated as a predictor of low back pain (LBP) in 46 initially asymptomatic individuals. Distinguishing between colleagues in general and the colleague one feels closest to, the authors analyzed constellations of support from supervisor (which had positive effects) and closest colleague (which had(More)
The aim of this study was to investigate the nature of tutor and student online communication and collaboration activities in a blended learning course. The hypothesis that these activities are related to student learning performance (exam results) was tested based on the number of messages posted, as well as the nature of these messages (type of content(More)
This paper describes the process of formally evaluating an E-Learning system that has been in use for several years. Professional usability evaluation offers deeper insight into user behaviour and needs than accidental feedback collection or introspection by system developers. A first analysis of the evaluation samples shows satisfaction of users with the(More)
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