In this paper, we study the issue of free-riding in collaborative learning. Free-riding occurs when a part of the students lean on the efforts of the rest of their team and do not contribute much to the team work. It impacts negatively on performances of the whole team [1]. We present an experiment of collaborative diagram drawing (through a synchronous collaborative drawing tool, called Shared...

The aim of this study is to test the effectiveness of AutoCAD 3D software in learning of Engineering Drawing to enhance students understanding. Data were collected from a sample of students from a secondary school in Sungai Petani, Kedah. The quasi experimental design was used to find the effectiveness of the software in improving student’s achievement. The result from this study shows excellen...

In this paper, a method is proposed to retrieve desired 3D models by measuring the similarity between a user’s freehand sketches and 2D orthogonal views generated from 3D models. The proposed method contains three parts: (1) pose determination of a 3D model; (2) 2D orthogonal view generation along the orientations; and (3) similarity measurement between a user’s sketches and the 2D views. Users...

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An example-driven graphics recognition scheme is presented, which is an extension of the generic graphics recognition algorithm we presented years ago. The key idea is that, interactively, the user can specify one or more examples of one type of graphic objects in an engineering drawing image, an the system then learn the constraint rules among the components in this type of graphic objects and...

In this paper we investigate whether Virtual Reality (VR) and Augmented Reality (AR) offer potential for the training of manual skills, such as for assembly tasks, in comparison to conventional media. We present results from experiments that compare assembly completion times for a number of different conditions. We firstly investigate completion times for a task where participants can study an ...

The rapid change in teaching of engineering drawing using computer aided design (CAD) technology makes a tremendous change on the staff/students in teaching/understanding engineering drawing in technical institutions. Mastering CAD technology has become order of the day for staff/students especially in technical institutions. CAD course have become a compulsory subject in many technical univers...