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    Wyświetlanie 1-6 z 6
    Tytuł:
    Research on the concept of using calcium carbide as a source of energy for transport from the seabed
    Autorzy:
    Filipek, Wiktor
    Broda, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/27315919.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    górnictwo morskie
    transport z dużych głębokości
    węglik wapnia
    acetylen
    marine mining
    transport from great depths
    calcium carbide
    acetylene
    Opis:
    The growing interest in the exploitation of marine deposits has resulted in the development of research on deposits and technologies for their exploitation. For several years, the authors have been dealing with one of the most important problems in the deep sea mining of mineral deposits, namely transport from great depths. This publication presents theoretical considerations regarding the use of calcium carbide as a source of energy for transport from the seabed. The authors proposed three lines of the course of the decomposition reaction of calcium carbide and then analyzed the possibility of their use. From the obtained results it can be concluded that the maximum depth of use of a simple CaC2 distribution is about 1 km, while using the method proposed by the authors based on the "balance of forces" (using an additional medium) it is possible to apply this method to any depth occurring on Earth.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 277-284
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental research on the concept of using an autonomous transport module for transport from the seabed
    Autorzy:
    Filipek, Wiktor
    Broda, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/27315917.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    górnictwo morskie
    transport z dużych głębokości
    autonomiczny moduł transportowy
    marine mining
    transport from great depths
    autonomous transport module
    Opis:
    The great interest in the exploitation of sea deposits has in recent years resulted in the creation of many consortia conducting research on various methods of mining and transport to the surface. Exploitation of the shelf areas of crude oil and gas as well as solid minerals is successfully carried out in many places around the world using various methods. More and more often, however, we want to obtain natural resources found at great depths such as polymetallic nodules and massive polymetallic sulphides. This puts much greater demands on scientists and engineers. Unfortunately, solutions developed so far are characterized by high energy consumption. For several years, the authors have been researching new concepts of transport from the seabed. In previous years the authors presented theoretical research results of using a new method involving the use of pyrotechnic materials as a source of energy in transport from the seabed from large depths and experimental ones with the use of potassium nitrate and ammonium nitrate in a controlled pyrotechnic reaction and they compared three conceptions of transport of dredge spoil from the point of view of energy demand. This publication presents the results of the continuation of research, this time on the concept of building an autonomous transport module and its operating principles. The construction of the laboratory stand and the way of conducting experiments are discussed. The results of experimental research are presented, which confirm the possibility of using the discussed concept in transport from the seabed.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 267-275
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Debt Experience of Facebook Users in Poland. A Conceptual Model and Empirical Test
    Autorzy:
    Cwynar, Andrzej
    Cwynar, Wiktor
    Filipek, Kamil
    Powiązania:
    https://bibliotekanauki.pl/articles/1790718.pdf
    Data publikacji:
    2018-06-18
    Wydawca:
    Polskie Towarzystwo Socjologiczne
    Tematy:
    debt experience
    debt literacy
    social networks
    Facebook
    SEM
    Opis:
    Negative debt experiences of individuals lead to costly social and macroeconomic tensions. This study examines the impact of four latent variables, namely financial education, debt literacy, personality, and online personal network, on the debt experience of Facebook users in Poland (N = 1,055). Based on some prior research, we proposed a Structural Equations Model (SEM) testing the relationships among variables hypothesised to be linked to debt experience. The findings indicate that debt experience is a complex phenomenon determined simultaneously by many diverse factors. Surprisingly, the personal networks of Facebook users have no significant impact on the debt experience of our respondents. The findings also suggest that results of any explanatory study on debt experiences may strongly depend on the measures used.
    Źródło:
    Polish Sociological Review; 2018, 202, 2; 243-265
    1231-1413
    2657-4276
    Pojawia się w:
    Polish Sociological Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shaping Facebook and Twitter Public Spheres: The Case of Swiss Franc Mortgage Holders in Poland
    Autorzy:
    Filipek, Kamil
    Cwynar, Andrzej
    Cwynar, Wiktor
    Szkoła, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/2096310.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Instytut Socjologii
    Tematy:
    Facebook
    Twitter
    public sphere
    topic-modelling
    Opis:
    The article focuses on the online communication on Polish Facebook and Twitter around issues related to mortgage loans in Swiss francs. Based on 20k posts retrieved from both Facebook and Twitter, we found the most active actors and the most common topics appearing on those micro-public spheres. It was revealed that actors with institutional affiliation and those who are not affiliated discuss different problems and share dissimilar content related to Swiss franc debts. It was also found that certain categories of actors may influence online discussions on both social networking sites by promoting specific content in order to pursue their institutional interests. Finally, the diversity of topics and problems discussed by the two categories of actors identified on Facebook and Twitter suggest that Swiss franc mortgage holders are a good example of “connective action” with no clear identity or community traits that led to favourable judgment of the European Court of Justice. 
    Źródło:
    Konteksty Społeczne; 2020, 8, 1; 5-23
    2300-6277
    Pojawia się w:
    Konteksty Społeczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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