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  • Author: Wojciech Grzywacz x
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Open access

Jan Matuszewski and Wojciech Grzywacz

Abstract

The article presents navigation system project operating on the principle scene matching area correlation (SMAC), using a digital camera, an MEMS e-compass sensor and an ultrasonic ranging module. Systems of this type are used as a component of advanced integrated navigation systems in view of its autonomy and capability of localizing aircrafts with high accuracy and precision. Steering and display of information are implemented using a computer application designed in Matlab programming environment. The object’s location is fixed, using discrete cross-correlation function through matching of the registered terrain image to digital orthophotomap.

The article describes operations directly related to digital image processing, its implementation methods, a structural system design with explanations of each of the functional elements and presents devices used to build a complete integrated measurement unit model. It was used for the effectiveness measurement of determining the location of an object depending on the changes of angle and height of the flight as well as the luminance and noise level in a registered image. The measurements methodology was described which also includes an analysis of the results, an effectiveness evaluation and potential development directions of the designed system.

Open access

Wojciech J. Cynarski, Renata Grzywacz, Krzysztof Kubala, Magdalena Kunysz-Rozborska, Adam Podolski and Przemysław Pawelec

Abstract

The theoretical framework for this research is the sociology of leisure and the sociology of health. Because sedentary behaviour (of employees) is a relevant new research area with important health risks, we decided to focus our attention on this subject. Moreover, sedentary behaviour in the workplace seems to be an important topic for the future.

The general aim of the research is to provide a platform for exchange on effective approaches for promoting health-enhancing physical activity among workers, to learn from experiences in different European countries and to promote the most effective approaches across Europe.

Two methods of qualitative research were used. The first was the method of expert judges. By way of direct interview, the statements of nine persons were collected, all of whom were recognised as competent judges. The second method was the analysis of the content of the literature (quality method). Using the computer program Atlas.ti, the respondents and their answers were examined.

Most of the indications (89%) concerned responses indicating physical activity. In general, the experts are quite physically active and keep a healthy (in their opinion) diet. They have both knowledge and appropriate skills in physical education. They point to the growing interest of younger academics in health and fitness, which may be associated with trends in popular culture, such as a sporty lifestyle, the cult of the body, various healthy diets and supplements, etc., that are becoming the universal fashion.

The aim of this work was to provide a platform for exchange on effective approaches to the promotion of health-enhancing physical activity among workers, to learn from experience in different European countries and to promote the most effective approaches across the region. Because the sedentary behaviour of employees is a relevant new research area with important health risks, we decided to focus our attention on this subject.