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Wyświetlanie 1-5 z 5
Tytuł:
The Times They Are A-Changin’
Autorzy:
Jędrzejko, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/626232.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
1968
transformations
revolution
protests
Prague Spring
Civil Rights Movement
Black Power Movement
Mai'68
the long 1968
Bob Dylan
singer-songwriter
activism
Opis:
The article, whose central premise is to address the ellusive issue of the Zeitgeist of the "long 1968," revolves around the appeal of the singer-songwriter activism and the international, cross-cultural popularity of protest songs that defy political borders and linguistic divides. The argument opens with reference to Bob Dylan's famous song "The Times They Are A-Changing," whose evergreen topicality resulted not only in the emergence of its numerous official and unofficial covers and reinterpretations, but also generated translations into all major languages of the world, and which has provided inspiration to engaged artists, whose present-day remakes serve as a medium of criticism of the unjust mechanisms of power affecting contemporary societies. The "spirit of the 1968," which evades clear-cut definitions attempted by cultural historians and sociologists, seems to lend itself to capturing in terms of what Beate Kutschke dubs "mental" criteria, perhaps best comprehended in the analysis of the emotional reactions to simple messages of exhortative poetry or simple protest songs, which appeal to the shared frustrations of self-organized, grassroot movements and offer them both the sense of purpose and a glimpse of hope. In this sense, the Zeitgeist of '68 is similar to that of revolutionary Romanticism that united the young engaged intellectuals on both sides of the Atlantic, and whose messages reverberate in the activist songwriters' work until today. As such, the essay provides the keynote to the whole issue, which explores some of the transnational legacies of "1969."
Źródło:
Review of International American Studies; 2019, 12, 2; 5-24
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ability of black-box optimisation to efficiently perform simulation studies in power engineering
Autorzy:
Petersson, Lukas
Kutzner, Rüdiger
Schäfer, Marc
Hofmann, Lutz
Powiązania:
https://bibliotekanauki.pl/articles/2204619.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
black-box optimisation
power plant engineering
derivative-free optimisation
simulation studies
power engineering
Opis:
In this study, the potential of the so-called black-box optimisation (BBO) to increase the efficiency of simulation studies in power engineering is evaluated. Three algorithms (“Multilevel Coordinate Search” (MCS) and “Stable Noisy Optimization by Branch and Fit” (SNOBFIT) by Huyer and Neumaier and “blackbox: A Procedure for Parallel Optimization of Expensive Black-box Functions” (blackbox) by Knysh and Korkolis) are implemented in MATLAB and compared for solving two use cases: the analysis of the maximum rotational speed of a gas turbine after a load rejection and the identification of transfer function parameters by measurements. The first use case has a high computational cost, whereas the second use case is computationally cheap. For each run of the algorithms, the accuracy of the found solution and the number of simulations or function evaluations needed to determine the optimum and the overall runtime are used to identify the potential of the algorithms in comparison to currently used methods. All methods provide solutions for potential optima that are at least 99.8% accurate compared to the reference methods. The number of evaluations of the objective functions differs significantly but cannot be directly compared as only the SNOBFIT algorithm does stop when the found solution does not improve further, whereas the other algorithms use a predefined number of function evaluations. Therefore, SNOBFIT has the shortest runtime for both examples. For computationally expensive simulations, it is shown that parallelisation of the function evaluations (SNOBFIT and blackbox) and quantisation of the input variables (SNOBFIT) are essential for the algorithmic performance. For the gas turbine overspeed analysis, only SNOBFIT can compete with the reference procedure concerning the runtime. Further studies will have to investigate whether the quantisation of input variables can be applied to other algorithms and whether the BBO algorithms can outperform the reference methods for problems with a higher dimensionality.
Źródło:
Acta Mechanica et Automatica; 2023, 17, 2; 292--302
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Description of Measurements on Biogas Stations
Autorzy:
Novosad, L.
Hradilek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/136222.pdf
Data publikacji:
2016
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
biogas station
power analysis
measurement database
black out
co-generation units
distribution grid
Opis:
This paper focuses mainly on performance analysis for three biogas stations situated within the territory of the Czech Republic. This paper contains basic details of the individual biogas stations as well as description of their types. It also refers to the general description of the measurement gauge involved, with specifications of its potential use. The final part of this paper deals with the analysis of course data obtained, with special regard to voltage, current, active power and reactive power data.
Źródło:
Transactions on Environment and Electrical Engineering; 2016, 1, 3; 16-20
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of technical parameters of black coals used in low–power boilers
Analiza parametrów technicznych węgli kamiennych stosowanych w kotłach małej mocy
Autorzy:
Ciupek, B.
Urbaniak, R.
Perz, K.
Powiązania:
https://bibliotekanauki.pl/articles/314359.pdf
Data publikacji:
2018
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
black coal
low-power boilers
technical analysis
węgiel kamienny
kotły małej mocy
analiza techniczna
Opis:
The article presents the results of technical analysis of black coals available in retail sales in Poland. A comprehensive list of fuel technical parameters and analysis of the possibilities of their use in low-power boilers was supported by the experience of the authors of the study. A thorough analysis of technical parameters of fuels concerned basic thermodynamic parameters of fuels responsible for the quality of thermal processes occurring in boilers. The collected data is presented in a uniform description of the current state of the sold fuels. In the last point, the researchers were looking at the technical aspects of the fuels offered in relation to the existing emission standard for low-power boilers.
W artykule przedstawiono wyniki analizy technicznej węgli kamiennych dostępnych w sprzedaży detalicznej w Polsce. Obszerna lista parametrów technicznych paliw i analiza możliwości ich zastosowania w kotłach o małej mocy została poparta doświadczeniem autorów badań. Dogłębna analiza parametrów technicznych paliw dotyczyła podstawowych parametrów termodynamicznych paliw odpowiedzialnych za jakość procesów cieplnych zachodzących w kotłach. Zebrane dane prezentowane są w jednolitym opisie aktualnego stanu sprzedawanych paliw. W ostatnim punkcie badacze przyglądali się technicznym aspektom oferowanych paliw w stosunku do istniejącego standardu emisji dla kotłów o małej mocy.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 12; 386-389
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
International Political and Security Potential of Ukraine within the Baltic-Black Sea Region and Ukraine’s Participation in Regional Military-Political Cooperation and Integration Processes
Autorzy:
Panchuk, Roman
Powiązania:
https://bibliotekanauki.pl/articles/1931294.pdf
Data publikacji:
2020-03-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Baltic–Black Sea Union
Intermarium
geopolitical processes
international cooperation
external security
European stability
Russian expansion
military power
Opis:
The article presents the Baltic-Black Sea region in the military-political dimension, as well as explores the potential benefits of this cooperation for European security. The study offers some important insights into the historical preconditions for the formation of the Union according to the Baltic-Black Sea Arc. This paper attempts to show the importance of international political and security potential of Ukraine and its influence on the formation of the Baltic-Black Sea Union. The Baltic-Black Sea Union is seen as an effective counterweight to Russia’s expansion into the West, whereby Ukraine could serve as a guarantor of European stability. The article analyzes opinions of international experts on the implementation of the Baltic-Black Sea Union, as well as compares the military power of potential members of the union with the military forces of advanced countries. This study provides an important opportunity to advance the understanding of the benefits for Union members and European countries and how the United States can help implement the idea of project. The analysis emphasizes the functions of the Baltic-Black Sea Union, potential NATO assistance and how the Union will ensure the stability of its forces in Europe. It is summarized why the countries of the Baltic-Black Sea arc can act as a guarantor of protection against Russian aggression.
Źródło:
Krakowskie Studia Małopolskie; 2020, 1(25); 136-152
1643-6911
Pojawia się w:
Krakowskie Studia Małopolskie
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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