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    Wyświetlanie 1-4 z 4
    Tytuł:
    Algorithmic Trading and Efficiency of the Stock Market in Poland
    Autorzy:
    Jóźwicki, Rafał
    Trippner, Paweł
    Kłos, Karolina
    Powiązania:
    https://bibliotekanauki.pl/articles/1368020.pdf
    Data publikacji:
    2021-06-30
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    algorithmic trading
    market efficiency
    trading system
    investing
    technical analysis
    Opis:
    The aim of the article is to investigate the impact of algorithmic trading on the returns obtained in the context of market efficiency theory. The research hypothesis is that algorithmic trading can contribute to a better rate of return than when using passive investment strategies. Technological progress can be observed in many different aspects of our lives, including investing in capital markets where we can see changes resulting from the spread of new technologies. The methodology used in this paper consists in confronting a sample trading system based on classical technical analysis tools with a control strategy consisting in buying securities at the beginning of the test period and holding them until the end of this period. The results obtained confirm the validity of the theory of information efficiency of the capital market, as the active investment strategy based on algorithmic trading did not yield better results than the control strategy.
    Źródło:
    Finanse i Prawo Finansowe; 2021, 2, 30; 75-85
    2391-6478
    2353-5601
    Pojawia się w:
    Finanse i Prawo Finansowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Body balance in people practicing snowboarding
    Autorzy:
    Kłos, Karolina
    Giemza, Czesław
    Dziuba-Słonina, Alicja
    Powiązania:
    https://bibliotekanauki.pl/articles/306295.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    trening
    sport zimowy
    snowboard
    training
    winter sport
    balance
    snowboarding
    Opis:
    While snowboarding, the human body is subjected to many forces and factors affecting balance. It is assumed that practising snowboarding may improve balance, but the evidence from the literature is scarce. Therefore, our study aimed to examine the effect of snowboard training on balance parameters in adults. Methods: The study included 34 subjects between 19 to 26 years old (21.4 ± 1.44) – students of the University School of Physical Education in Wrocław. They were divided into 2 equal groups. The first group, the practising group consisted of 17 snowboarders who participated in a 6-day snowboard training. The second group, the control group consisted of 17 individuals who had never practised snowboarding. For the conduct of the study, a FreeMED force plate was used. The following parameters were measured: the length of COP sways, the surface of the COP ellipse, and COP ellipse angle. Tests were performed with eyes closed and open. Results: Values of most of the parameters in the practising group decreased insignificantly after 6-day training. Values of parameters in the control group were in most cases insignificantly higher in comparison with the practising group. Conclusions: Our findings may suggest that snowboard training has no effect on balance. Further research on larger groups of participants is required. Research methodology should include electromyography, measurement of the moment of muscle force, and kinematic analysis for evaluation movement during real snowboard ride.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2019, 21, 1; 97-101
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Community-level physiological profiles of microorganisms inhabiting soil contaminated with heavy metals
    Autorzy:
    Kuźniar, Agnieszka
    Banach, Artur
    Stępniewska, Zofia
    Frąc, Magdalena
    Oszust, Karolina
    Gryta, Agata
    Kłos, Marta
    Wolińska, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/973240.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Opis:
    The aim of the study was to assess the diffe-rences in the bacterial community physiological profiles in soils contaminated with heavy metals versus soils without metal contaminations. The study’s contaminated soil originated from the surrounding area of the Szopienice non-ferrous metal smelter (Silesia Region, Poland). The control was soil unexposed to heavy metals. Metal concentration was appraised by flame atomic absorption spectrometry, whereas the the community-level physiological profi le was determined with the Biolog EcoPlatesTM system. The soil microbiological activity in both sites was also assessed via dehydrogenase activity. The mean concentrations of metals (Cd and Zn) in contaminated soil samples were in a range from 147.27 to 12265.42 mg kg-1, and the heavy metal contamination brought about a situation where dehydrogenase activity inhibition was observed mostly in the soil surface layers. Our results demonstrated that there is diversity in the physiological profi les of microorganisms inhabiting contaminated and colntrol soils; therefore, for assessment purposes, these were treated as two clusters. Cluster I included colntrol soil samples in which microbial communities utilised most of the available substrates. Cluster II incorporated contaminated soil samples in which a smaller number of the tested substrates was utilised by the contained microorganisms. The physiological profi les of microorganisms inhabiting the contaminated and the colntrol soils are distinctly different.
    Źródło:
    International Agrophysics; 2018, 32, 1; 101-109
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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