To compare the outcomes of participatory and user-centered contextual design, case study methods and the Activity Checklist derived from Activity Theory are used to analyze two sy...
In this paper we present a novel system for monitoring a computer user’s posture and activities in front of the computer (e.g., reading, speaking on the phone, etc.) for self-re...
The experience of a trusted group of colleagues can help users improve the quality and focus of their browsing and searching activities. How could a system provide such help, when...
During the life cycle of a software system, the source code is changed many times. We study how developers can be enabled to get insight in these changes, in order to understand t...
In this paper, we propose a web browsing support system, called WPM, which provides marking and anchoring functions on ordinary web browsers. WPM users can mark words and phrases ...