Zeljko Obrenovic

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In this paper, we show how spreadsheets, an end-user development paradigm proven to be highly productive and simple to learn and use, can be used for complex service compositions. We identify the requirements for spreadsheet-based service composition, and present our framework that implements these requirements. Our framework enables spreadsheets to send(More)
While many multimedia systems allow the association of semantic annotations with media assets, there is no agreed-upon way of sharing these among systems. As an initial step within the multimedia community, we identify a small number of fundamental processes of media production, which we term canonical processes. We specify their inputs and outputs, but(More)
Recent discussions in the interaction design community have called attention to sketching as an omnipresent element of any disciplined activity of design, and have pointed out that sketching should be extended beyond the simple creation of a pencil trace on paper. More specifically, the need to deal with all attributes of a user experience, especially the(More)
In this paper we introduce an ontology-based approach to the design of multimodal user interfaces. The main benefit of our approach is the unified ontology of multimodal interaction, where we have integrated the knowledge and common concepts from different domains of multimodal interaction in a uniform way. The unified ontology of multimodal interaction can(More)
Telemedicine creates virtual medical collaborative environments. We propose here a novel concept of virtual medical devices (VMD) for telemedical applications. VMDs provide different views on biomedical recordings and efficient signal analysis. In this paper we present a telemedical EEG analysis environment based on virtual reality technologies. The same(More)
There is a great variety of theoretical models of emotions and implementation technologies which can be used in the design of affective computers. Consequently, designers and researchers usually made practical choices of models and develop ad-hoc solutions that sometimes lack flexibility. In this paper we introduce a generic approach to modeling emotional(More)