Introduction: Arabia Terra, with an area of ~1x10 km [1] centered at (25E, 5N), is an anomalous region along the Martian dichotomy. Traditionally considered part of the ancient southern highlands, Arabia Terra is a transitional province between the southern highlands and northern lowlands in both topography [2] (Fig. 1) and crustal thickness [3]. While the geological processes leading to the fo...

Network intrusion detection has been an area of rapid advancement in recent times. Similar advances in the field of intelligent computing have led to the introduction of several classification techniques for accurately identifying and differentiating network traffic into normal and anomalous. Group Method for Data Handling (GMDH) is one such supervised inductive learning approach for the synthe...

This document reports in brief the findings of a study conducted to observe the relationship between a sense of presence and team training in decision making in dynamic high risk environments. A simple desktop virtual game environment is used to explore the possibility that, in this context, such semi immersive dynamic virtual environment (VE) could be used to achieve a sense of presence suffic...

This article describes a series of experiments which were carried out to measure the sense of presence in auditory virtual environments. Within the study a comparison of self-created signals to signals created by the surrounding environment is drawn. Furthermore, it is investigated if the room characteristics of the simulated environment have consequences on the perception of presence during vo...

A sense of spatial presence as a feeling of “being there” is an important part of the virtual experience. Navigation is a fundamental task in virtual environments and the specific navigation methods that are employed influence a user’s sense of presence. In this paper we investigate how different metaphors for vertical navigation impact spatial presence. We introduce a new elevator metaphor for...

Thesis for the degree of Doctor of Technology, to be presented with due permission for public examination and criticism in the Seminar Room Abstract This investigation has been carried out at the Royal Institute of Technology (KTH) in Stockholm. The main goal has been to investigate the factors determining the production of a sense of presence and reality in video mediated communication. Presen...

In previous work, we have found significant differences in the accuracy with which people make initial spatial judgments in different types of head-mounted, display-based immersive virtual environments (IVEs; Phillips, Interrante, Kaeding, Ries, & Anderson, 2010). In particular, we have found that people tend to less severely underestimate egocentric distances in a virtual environment that is a...

This paper focuses on the user’s perception of virtual agents embedded in real and virtual worlds. In particular, we analyze the perception of spatial relations and the perception of coexistence. For this purpose, we measure the user’s voice compensation which is one of the human automatic behaviors to their surrounding environment. The results of our evaluation study reveal that people compens...

This work offers a comparative analysis between the constructs of sense of presence and mindfulness performed along dimensions such as awareness, attention and non-judgemental acceptance. Related constructs such as flow and absorption are also included in the analysis.

The estimation of rainfall rate and other parameters from radar scattering volume is heavily affected by the presence of intense sea and ground clutter and echoes which appears in anomalous propagation condition. To deal with these non meteorological echoes we present a new clutter removal algorithm which combines the results of previous works. The algorithm fully exploits both the Doppler and ...