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In this paper we propose a scripting language, called STEP, for embodied agents, in particular for their communicative acts like gestures and postures. Based on the formal semantics of dynamic logics, STEP has a solid semantic foundation, in spite of a rich number of variants of the compositional operators and interaction facilities on the worlds. STEP has(More)
Human-like characters in the interface may evoke social responses in users, and literature suggests that realism is the most important factor herein. However, the effects of interface characters on the user are not well understood. We developed an integrative framework, called I-PEFiC, to explain 'persona' and realism effects on the user. We tested an(More)
Business visualization is becoming increasingly important, since managers recognize the power of human visual intuition in information-rich decision tasks. Nevertheless, despite its promises, 3D visualizations are far less common than one would expect. In this paper, we describe a case study where we took a 2D visualization of a business process as a(More)
A growing interest is seen for designing intelligent environments that support personally meaningful, sociable and rich everyday experiences. In this paper we describe an intelligent, large screen display called Panorama that is aimed at supporting and enhancing social awareness within an academic work environment. Panorama is not intended to provide(More)
In this paper we propose an XML-based markup language, called XSTEP, for embodied agents, based on the scripting language STEP. Thus, XSTEP is the XML-based successor of STEP. STEP is developed on the formal semantics of dynamic logic, and has been implemented in the distributed logic programming language DLP, a tool for the implementation of 3D web agents.(More)