Through a systematic investigation of the complete dielectric tensor, between 0.5 and 5.0 eV, of is the only spinel ferrite with a major contribution of crystal field transitions to the magneto-optical spectrum. The observed presence of only two intense crystal field transitions in specifically CoFe 2 O 4 is explained. The observed relative strengths of these two transitions in CoFe 2 O 4 , in which remarkably the upper transition at 1.82 eV is more intense than the lower transition at 0.83 eV is also explained in a crystal field analysis.

Aurama is a system designed to provide peace of mind and a sense of connectedness to adults who care for elderly parents living alone. Aurama monitors the elders at home using unobtrusive sensor technology and collects data about sleeping patterns, weight trends, cognitive abilities and presence at home. The system provides an unobtrusive ambient information display that presents the status of the elder and lets its users inspect long-term data about the well-being of the elder interactively. Aurama was designed iteratively with substantial user involvement through interviews, prototype evaluation, focus groups and lab tests. The final prototype was evaluated in two field trials each involving an elder and their adult children. The input of users throughout the design process and during these tests demonstrates clearly the potential of awareness systems to support the target user group to obtain peace of mind and feel connected. Furthermore, the users indicate a clear need for information on long-term trends relating to the well-being of aging parents, in contrast to the current emphasis in this field of research on providing instantaneous status information about daily activities and context.

Abstract. This paper presents the design of a table-top game supporting the treatment of children with Cerebral Palsy. The game was developed through a participatory design process involving therapists and children from the target user group. The game is implemented on top of a platform that supports the implementation of tangible user interfaces using sensing technology. We argue that physical interaction, motivated and constrained by the design of tangible interfaces, offers enormous potential for occupational and physical therapy where patients need to practice specific and repetitive movements.

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