W trosce o godność człowieka

Book review: Janusz Mariański, Godność ludzka w narracji społecznej. Studium socjopedagogiczne, Wydawnictwo KUL, Lublin 2021, ss. 302. Recenzja książki: Janusz Mariański, Godność ludzka w narracji społecznej. Studium socjopedagogiczne, Wydawnictwo KUL, Lublin 2021, ss. 302.

Multiplicative automatic sequences

We obtain a complete classification of complex-valued sequences which are both multiplicative and automatic.Comment: 30 page

Time Analysis of Muscle Activation during Basketball Free Throws

Objective of the study: The study assessed and compared the duration of the muscle activation in a basketball free throw, by players representing a preliminary and specialist stage of training. There was also analysed the accuracy of throws according to the stage of training, and whether individual changes in duration of activation have impact on the accuracy of free throws. Material and methods: Players from national basketball teams second and third league of the AZS Academic Sports Club of Opole University performed twenty free throws shooting to the basket during the research study. During tests, players were equipped with EMG apparatus, which registered the time of muscle activation, when subsequent free throws were performed. Arm muscle (biceps and triceps) activation time was measured from the beginning of muscle activation to the time of completion of their work, and from muscle activation to the time of reaching the rim.Results: Players of specialist stage of training, have 0,30 sec shorter average arm muscle time activation, counted from the beginning of activation to obtain the minimum value, from players of the preliminary stage of training. They also gained average 2 points better result in throw accuracy. Variability coefficient of throws duration was higher by 19.56% at players of the specialist stage of training. In the case of unforced extend duration of muscle activation, 80% of specialists and 40% players of preliminary group, don’t score the basket.Conclusions: It was observed that the basketball players of higher training experience, have lower average time of arm muscle activation. It was demonstrated that in players of the specialist stage of training, missed free throws were mostly caused by longer duration from the beginning of muscle activity to the rim, with players of the preliminary stage it was reverse

Optimization of the Effort Preparation Process Among the Short Track Female Competitors in a Year Cycle

The aim of conducted research was an attempt to define the dynamics of aerobic and anaerobic endurance changes in the short track female competitors training during a year cycle which is dependent on the energy characteristic of training burden. Nineteen female competitors of OMKŁS Opole club and KU AZS PO Opole, were put through the examination. Eight of them were members of National Team and Olympic Team (Vancouver 2010), moreover, the competitors participated in the World Cup, World Championship, European Championship. The other examined competitors were members of National Team. With the help of terrain and laboratory tests, an official record was made on every lap time, final time of every trial, HR max and HR medium as well as the concentration of lactate in blood in fourth minute after an effort. In the thirtieth minute, after an effort, HR and lactate concentration were registered in order to define the course of restitution. Anaerobic and mixed parameters were examined by the Wingate test in 7.5% load formula of body weight. The results of researches proved that a selection of applied training burdens was not conductive to the adaptation of process according to the Mathews, Fox model (1976). In the short track, a training burden should reflect the specific of an effort in this discipline, emphasising an anaerobic energy type in a year cycle of preparations

Temperature and E-Poling Evolution of Structural, Vibrational, Dielectric, and Ferroelectric Properties of Ba1−xSrxTiO3 Ceramics (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.45)

Poland’s high-performance computing infrastructure PLGrid (HPC Centers: ACK Cyfronet AGH) for providing computer facilities and support within computational grant no. PLG/2022/015969. Innovative research and scientific platform for a new class of nanocomposites, financed by the Ministry of Education and Science, contract number 7216/IA/SP/2021.Lead-free Ba1−xSrxTiO3 (BST) (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.45) ceramics were successfully prepared via the solid-state reaction route. A pure perovskite crystalline structure was identified for all compositions by X-ray diffraction analysis. The basic phase transition temperatures in these ceramics were studied over a wide temperature range. A change in symmetry from a tetragonal to cubic phase was detected, which was further proven by phonon anomalies in composition/temperature-dependent Raman spectra. The incorporation of Sr2+ into BaTiO3 (BT) lead to a shift in the phase transitions to lower temperatures, suppressing the ferroelectric properties and inducing relaxor-like behavior. Therefore, it was reasonable to suppose that the materials progressively lack long-range ordering. The initial second-harmonic generation (SHG) measurements demonstrated that the cubic phase of BST ceramics is not purely centrosymmetric over a wide temperature interval. We discussed the possible origin of the observed effects, and showed that electric field poling seems to reconstruct the structural ordering destroyed by the introduction of Sr2+ to BT. In the first approximation, substitution of Sr for larger Ba simply reduced the space for the off-central shift in Ti in the lattice and hence the domain polarization. A-site cation ordering in BST and its influence on the density of electronic states were also explored. The effect of doping with strontium ions in the BST compound on the density of electronic states was investigated using ab initio methods. As the calculations showed, doping BT with Sr2+ atoms led to an increase in the bandgap. The proposed calculations will also be used in the subsequent search for materials optimal for applications in photovoltaics. --//-- This is an open access article Suchanicz, J.; Sitko, D.; Stanuch, K.; Świerczek, K.; Jagło, G.; Kruk, A.; Kluczewska-Chmielarz, K.; Konieczny, K.; Czaja, P.; Aleksandrowicz, J.; et al. Temperature and E-Poling Evolution of Structural, Vibrational, Dielectric, and Ferroelectric Properties of Ba1−xSrxTiO3 Ceramics (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.45). Materials 2023, 16, 6316. https://doi.org/10.3390/ma16186316 published under the CC BY 4.0 licence.the Ministry of Education and Science, contract number 7216/IA/SP/2021; The Institute of Solid State Physics, University of Latvia at the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2

Recenzja: Janusz Mariański, Sens życia. Wartości. Religia. Studium socjologiczne, Wydawnictwo KUL, Lublin 2013, ss. 287.

Człowiek współczesny, poszukujący sensu własnego bytu, jest zawieszony pomiędzy pustką aksjonormatywną a nadmiarem ofert, spośród których nie może lub nie potrafi właściwie wybrać. Zbadanie stanu świadomości zbiorowej młodzieży, a także częściowo dorosłych, w sprawach sensu życia wydaje się dlatego niezwykle poży¬teczne. Publikacja Janusza Mariańskiego, podejmująca to zagadnienie, jest kontynuacją jego badań, których wyniki zostały przedstawione w następujących publikacjach: Katolicyzm polski ciągłość i zmiana (Kraków 2011), Małżeństwo i rodzina w świadomości młodzieży maturalnej – stabilność i zmiana (Toruń 2012), Kościół katolicki w Polsce w przestrzeni życia publicznego. Studium socjologiczne (Toruń 2013), i ukazuje w szerszym spektrum zmian odnoszących się do zainteresowań młodzieży polskiej w perspektywie mijającej dekady

For the Sake of Human Dignity

Recenzja książki: Janusz Mariański, Godność ludzka w narracji społecznej. Studium socjopedagogiczne, Wydawnictwo KUL, Lublin 2021, ss. 302. Book review: Janusz Mariański, Godność ludzka w narracji społecznej. Studium socjopedagogiczne, Wydawnictwo KUL, Lublin 2021, ss. 302.