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  • Author: Krzysztof Piech x
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Abstract

Introduction. Family-oriented strategies of promoting physical activity are underused. In the last few years there has been a significant decrease in number of research on family as a promoter of physical activity. The research, when conducted, focuses on the influence parents' activity has on that of their children. There is a need for assessment of child's influence on parents' physical activity. Material and methods. The survey utilises an opinion poll in the form of a questionnaire. The sample consisted of 100 parents who were invited together with their children to a recreational fair. Results. The survey shows that child may be the person encouraging their parents to active recreation. Symptoms of this are: encouraging the parents to take part, satisfaction with the decision to take part in the event and the amount of positive sensations during play. The parents were of opinion that their both, children's as well as teacher's encouragement, was the most important factor in their decision to participate. Conclusions. The research indicated that after the fair children encouraged their parents to play together, whereas parents used games from the fair in their family free time. Because of the fact that the offered model of recreational event for families engaged and interested the participants, it is worth promoting in pedagogical sphere.

Abstract

Introduction. Results presented in this article are part of an international project called Project of physical activity stimulation in a family (PPASF) held jointly with the Klaipėda University and LASE in Riga. We decided to check whether participation of children in preschool age in active classes in nursery school may be an impetus to change behavior in terms of physical activity of a family. For this purpose, a model was developed that included physical activity program conducted in the nursery school, with homework for the children to do together with their parents at home. The aim of the study was to examine the extent to which a child can persuade the parents to a common physical activity and whether sport and recreation for children with homework are a successful proposal to increase motor activity of the family. Material and methods. A diagnostic survey method was applied in the research, using a questionnaire technique. The survey questionnaire covered 38 families including 30 mothers and 8 fathers. Results and conclusions. Research has shown that children can become facilitators of physical activity in the family. The proposed model classes for children proved to be an accurate proposal, which is worth to implement the practice of teaching.

Abstract

Nowadays detection of deterioration of electrical motors is an important topic of research. Vibration signals often carry diagnostic information of a motor. The authors proposed a setup for the analysis of vibration signals of three-phase induction motors. In this paper rotor fault diagnostic techniques of a three-phase induction motor (TPIM) were presented. The presented techniques used vibration signals and signal processing methods. The authors analyzed the recognition rate of vibration signal readings for 3 states of the TPIM: healthy TPIM, TPIM with 1 broken bar, and TPIM with 2 broken bars. In this paper the authors described a method of the feature extraction of vibration signals Method of Selection of Amplitudes of Frequencies – MSAF-12. Feature vectors were obtained using FFT, MSAF-12, and mean of vector sum. Three methods of classification were used: Nearest Neighbor (NN), Linear Discriminant Analysis (LDA), and Linear Support Vector Machine (LSVM). The obtained results of analyzed classifiers were in the range of 97.61 % – 100 %.