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Assessment of Young Swimmers’ Technique with Tec Pa Tool

100%

Papadimitriou K. , Papadimitriou N. , Gourgoulis V. , Barkoukis V. , Loupos D.

Central European Journal of Sport Sciences and Medicine

2021

tom 34

nr 2

39-51

Aim of the current study was to examine the reliability and validity of a new tool, developed for the assessment of young swimmers’ technique in all swimming strokes. The sample of the study was 119 swimmers (63 boys and 56 girls), aged 8 to 12 years old. To evaluate swimmers’ technique, each of them performed 15m for each one of the swimming strokes in individual medley order. Α digital camera, placed 5m above the pool’s surface, recorded the swimming bouts. Three experienced swimming coaches evaluated the recorded videos with the new technique’s evaluation tool named Tec Pa. Tec Pa assess six important key points of swimming technique in each stroke. According to the results no statistical significant differences were showed between the scores of the swimmers’ evaluation by the three coaches (p > 0.05). Moreover, the association between the scores was statistically significant high (τ = 0.863; p < 0.05). The findings of the current study reveal that Tec Pa is valid and reliable for the young swimmers’ technique evaluation, with high strength of association. Also, Tec Pa can be used by the coaches to enhance the free observation method, which is mainly used, in young swimmers.

Minimalizowanie ryzyka inwestowania w kontrakty terminowe futures - praktyczne zastosowanie formacji harmonicznej Butterfly

62%

Bednarz K.

Roczniki Ekonomii i Zarządzania

2014

tom 6(42)

nr 1

71-91

Investment risk (including futures contracts) depends on changes in financial instrument valuation (volatility). However it more concerns individual predisposition of a person taking investment decisions. It is an investor who decides what amount he can risk. While a technical analysis often shows the right time of concluding the transaction. In this article the author presents such a moment in the form of PRZ (Potential Reversal Zone). This moment is calculated by the Butterfly harmonic pattern, which is described by important Fibonacci ratios. The article includes charts showing the futures quotations and summary data tables containing the value of the stop-loss order, which prevents the loss and protects profits. The essence of all the XABCD harmonic patterns (including the presented Butterfly pattern) is to calculate the right moment to initiate transaction as many days (sometimes weeks or months) as possible before such a moment appears. This moment is the point D, which is calculated using external and internal price retracements. From the placed charts and calculations it appears that the described structure is characterized by very high profitability (e.g. 492,31 % in 34 days on the market) at a certain acceptable, relatively low level of risk.

Fauna wybranych grup owadów [Insecta] Puszczy Bukowej koło Szczecina. 5. Sówkowate [Lepidoptera, Noctuidae]

38%

Nowacki J.

Wiadomości Entomologiczne

1993

tom 12

nr 2

115-124

204 noctuid species are recorded from the Puszcza Bukowa forest near Szczecin. Localities, period of appearance of imagines and abundance on a 5-grade scale are given for each species.