The advent of the internet as a publicly available service in the 1990s set new standards for communication. With e-mailing and chatting in the picture, the way people talk to each other was revolutionized; within years, it became normal to have a least one personal computer per household in the westernized …

OBJECTIVES: Patients with hip or knee osteoarthritis (OA) may experience functional limitations in work settings. In the Cohort Hip and Cohort Knee study (CHECK) physical function was both self-reported and measured performance-based, using Functional Capacity Evaluation (FCE). Relations between self-reported …

The enhancement of GPS technology enables the use of GPS devices not only as navigation and orientation tools, but also as instruments used to capture travelled routes: as sensors that measure activity on a city scale or the regional scale. TU Delft developed a process and database architecture for collecting …