This paper presents a framework for augmented reality. Head tracking is accomplished using a head-mounted camera, which uses an optical flow based algorithm to track patterns on the ceiling. The position and orientation of the ceiling need not be known a priori, and the necessary calibration, except for radial lens distortion, can be performed on the fly using simple procedures.

a recent occurrence in the world of work is the phenomenon of women being stuck at lower levels, also referred to as the glass ceiling effect. different studies and sources in several countries show that the increase of women in managerial positions is still lopsided, especially when compared to the total number of female in the workforce. this research, try to identify the effective factors on...

he subjects of workforce diversity and inclusiveness emerged as important topics for human resource managers after the release of influential publications, such as the U.S. Department of Labor’s A Report on the Glass Ceiling Initiative (1991) and the Towers Perrin/Hudson Institute’s Workforce 2000 book (1987). The Glass Ceiling report defined, validated, and provided a metaphor for the notion t...

Using harmonised data from the European Union Household Panel, we analyse gender pay gaps by sector across the wages distribution for ten countries. We find that the mean gender pay gap in the raw data typically hides large variations in the gap across the wages distribution. We use quantile regression (QR) techniques to control for the effects of individual and job characteristics at different...

665 In order to maintain a comfortable office environment periodical inspection of the air conditioning equipment is very important. It is necessary to measure the air temperature and the volume of the controlled outlet air correctly from the ceiling air diffuser. The periodical inspection of a large number of ceiling air diffusers must be done efficiently and in a short time. Up to now this ha...

The purpose of this paper is to evaluate the effects of a building parameter, namely ceiling configuration, on indoor natural ventilation. The computational fluid dynamics (CFD) code Phoenics was used with the RNG k-ε turbulence model to study wind motion and ventilation flow rates inside the building. All the CFD boundary conditions were described. The simulation results were first validated b...

The aim of the study is to develop a model for the energy balance of buildings that includes the effect from the radiation properties of interior and exterior surfaces of the building envelope. As a first step we have used ice arenas as case study objects to investigate the importance of interior low emissivity surfaces. Measurements have been done in two ice arenas in the north part of Sweden,...

Two popular mounting positions of Doppler radar for human fall detection are in the ceiling center and at the torso level. This paper examines the fall signatures observed by a Doppler radar at the two positions and evaluates their consistencies with respect to the fall directions and locations. The complementary characteristics of the fall signatures motivate the integration of the features fr...

Digital circuits and embedded microcontroller systems are at the heart of twenty-first century life. Today, courses teaching of these systems are essential for engineering and technology students. In order to enhance students’ distance learning experience and improve their hands-on working skills, ceiling mounted robots need to be used. The ceiling robot, controlled by students at remote locati...