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This paper describes a study of whether and how collaborative learning at the computer fosters conceptual change. A suite of computer simulation programs developed to confront students' alternative conceptions in mechanics was integrated into a grade 10 science class in a high school in Melbourne, Australia. A Conceptual Test was administered as a pre-,(More)
In this paper, a robot calibration method is proposed where the effects of joint compliance is taken into account when formulating the model. The calibration process identifies the parameters describing the relative poses of the local frames attached to the links of the robot and the parameters determining joint deflections such as joint stiffness, the mass(More)
Robot calibration is to improve the accuracy of the robot model so as to achieve better positioning accuracy within the robot work cell. Model based calibration approaches are in general limited to compensating for geometric errors and are unable to compensate for error sources that do not fit within the proposed robot model. In order to compensate for the(More)
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