This paper focuses on an extensive market analysis done under the framework of the Peach coordination action, a project funded by the European Union Future Emerging Technologies unit. The analysis identifies, classifies, reports and further elaborates on which areas presently benefit from Presence technologies. Taxonomy of these markets is also derived in this document, describing how and why P...

Presence has become a key concept in characterizing and evaluating Virtual Environments. Our contribution is to show that current measures of Presence, as a metric of users’ experience of Virtual Environments, are highly problematic: results from the literature cannot be repeated and it lacks a theoretical basis. We synthesize results from three experiments we conducted and in conclusion point ...

The role of VE content in the presence experience is controversial. Although a strong theoretical argument has been made that presence depends on the form of information presented and not the content, several relational studies have shown that content is strongly associated to presence. This paper presents an experiment which manipulated nondiegetic music played during exposure to a strongly th...

The concept of self-presence provides a framework for understanding how people connect to virtual self-representations on three distinct levels (body, emotions, and identity). The present study aims to build on previous support for the reliability and construct validity of this framework. Participants (N=81) who used avatars in a semester-long collaborative virtual group project were examined. ...

OBJECTIVE The purpose of the present study was to investigate the frequency of presence of third molar teeth and their distribution in each jaw and each side, according to sex, in a group of orthodontic patients with permanent dentition from northern Greece. METHODS The sample included panoramic radiographs from 220 patients with permanent dentition (mean age 13.62 ± 1.81). The χ(2) test was ...

We show that it is decidable whether a third order matching problem in an extension of the simply typed lambda calculus with type constructors has a solution or not We present an algorithm which given such a problem returns a solution for this problem if the problem has a solution and returns fail otherwise We also show that it is undecidable whether a third order matching problem in has a clos...

In the example of the Venus statue there are the uncovered or so called original version and the covered or hidden version. Having the two objects, the visible and the covered, we have to acknowledge the fact that it is still an object, no matter of its presentation. These two different presentations of it are then divided into the known and the unknown. The statue covered with a veil raises mo...