Virtual reality (VR) helps to visualize the spatial relationships between different elements of landscape in architecture, allowing user feel designed environment and navigate through it interactively. VR can be used spaces both indoors (inside a building) outdoors (landscape). In present research, perception 3D during navigation was compared indoor outdoor virtual environments. The value exper...

with the rapid growth of indoor wireless communication systems, the need to accurately model radio wave propagation inside the building environments has increased. many site-specific methods have been proposed for modeling indoor radio channels. among these methods, the ray tracing algorithm and the finite-difference time domain (fdtd) method are the most popular ones. the ray tracing approach ...

The paper describes a fully autonomous relative navigation solution for urban environments (indoor and outdoor). The navigation solution is derived by combining measurements from a two-dimensional (2D) laser scanner with measurements from inertial sensors. This derivation relies on the availability of structures (lines and surfaces) within the scan range (80 m depth, typically). Navigation here...

The indoor atmosphere is an ecological unit that impacts on public health. To investigate the composition of organisms in this space, we applied culture-independent approaches to microbes harvested from the air of two densely populated urban buildings, from which we analyzed 80 megabases genomic DNA sequence and 6000 16S rDNA clones. The air microbiota is primarily bacteria, including potential...

UNLABELLED Toxic microbial secondary metabolites have been proposed to be related to adverse health effects observed in moisture-damaged buildings. Initial steps in assessing the actual risk include the characterization of the exposure. In our study, we applied a multi-analyte tandem mass spectrometry-based methodology on sample materials of severely moisture-damaged homes, aiming to qualitativ...

The geolocation systems are constantly evolving to enhance the integrity, accuracy and availability. Today, the applications are currently emerging and multiplying which is part of an overall context of mobility. In outdoor environments, GNSS (GPS, Galileo,...) is used and provide a good accuracy, but in the indoor environments, GNSS signal is deteriorated due to the signal degradation by diffe...

This paper proposes a method for hand-raising gesture detection that can be used for mobile robots in indoor environments. Different from traditional methods which are capable of the detection of handraising gesture with a static camera, our method can process the detection on a non-stationary platform. At first, haar-like features of raised arms are extracted and a cascade adaboost classifier ...

There are many applications which require continuous positioning in combined outdoor urban and indoor environments. For a long time GNSS has been used in outdoor environments while indoor positioning is still a challenging task. One of the major degradations that GNSS receivers experience indoors is the presence of multipath. The current paper analyzes several available multipath mitigation tec...

A critical problem in sensory interpretation is the derivation of the right mapping between sensor signals and properties of the world. In this regard, the method proposed here uses active sensing to acquire environmental features for reliable navigation in indoor environments. The features utilized are lines, corners, and edges extracted from common indoor room features such as walls, room cor...

The problem of indoor navigation using pseudolites is investigated and two different approaches, employing synchronous and asynchronous technologies, are considered. It is shown that synchronous pseudolite systems, commonly considered more accurate, seem to be unsuitable for deep indoor operations: in complex propagation environments, the synchronization required for metre level navigation is d...