Spyros Vosinakis

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The aim of this paper is to demonstrate Hermes, a robust framework capable of aiding a spatio-temporal database developer in modeling, constructing and querying a database with dynamic objects that change location, shape and size, either discretely or continuously in time. Hermes provides spatio-temporal functionality to state-of-the-art Object-Relational(More)
actions which must be immediately executed at the virtual layer. Figure 1. The Overall Virtual Intelligent Agent Architecture The AEC module serves a twofold purpose : Its bottom level takes care of the process communication between the Logical Agent and the Virtual World module. Its top level takes care of information transfer between the Logical Core and(More)
Presentation of content is an important aspect of today’s virtual reality applications, especially in domains such as virtual museums. The large amount and variety of exhibits in such applications raise a need for adaptation and personalization of the environment. This paper presents a content personalization platform for Virtual Museums, which is based on(More)
Virtual Worlds have not been deployed widely in collaborative design, and their respective value is largely unknown. In this paper we make a combined use of established principles in design and computer-mediated communication studies to provide an account of their value for collaborative design by presenting three case studies concerned with: (a) review(More)
The use of Virtual Environments as a user interface is essential for certain types of applications, both in education and entertainment. These worlds are even more attractive for the user when they are neither static nor pre-scripted, but have dynamic characteristics and are populated by autonomous entities, also called virtual agents. There has been a lot(More)
In this paper, we propose a perception model for virtual agents based on a two -layered architecture. Each agent is equipped with a sensing mechanism that retrieves the objects in its field of view and stores them in its memory, and with a perception module that applies a set of rules on them and generates its beliefs. We propose a scripting language for(More)
There is a growing number of Problem-Based Learning (PBL) studies in Virtual Worlds (VWs); however the suitability of these approaches is still unknown for particular knowledge domains and in full-time courses. In this paper we argue that VWs can support a constructionist approach to PBL for blended practice-based courses of design and engineering, and we(More)
The paper suggests that virtual worlds (VWs) have many unique advantages for supporting interaction design studio activities, provided that they are designed to include appropriate workplaces and interactive tools to foster collaboration and creativity. We present an approach for employing VWs that proposes the use of prospective tools and workplaces(More)
In this paper, we present SimHuman, a platform for the generation of real-time 3D environments with virtual agents. SimHuman is highly dynamic and configurable, as it is not based on fixed scenes and models, and has an embedded physically based modelling engine. Its agents can use features such as path finding, inverse kinematics and planning to achieve(More)