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Wyświetlanie 1-2 z 2
Tytuł:
Non-linear analysis of air pressure fluctuations during bubble departure synchronisation
Autorzy:
Dzienis, Paweł
Mosdorf, Romuald
Wyszkowski, Tomasz
Rafałko, Gabriela
Powiązania:
https://bibliotekanauki.pl/articles/386823.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
bubble departure
alternative bubble departures
nonlinear methods of data analysis
Opis:
In the recent paper, non-linear methods of data analysis were used to study bubble departure synchronisation. In the experiment, bubbles were generated in engine oils from two neighbouring brass nozzles (with an inner diameter of 1 mm). During the experiment, the time series of air pressure oscillations in the air supply system and voltage changes on phototransistor were recorded. The analysis of bubble departure synchronisation was performed using a correlation coefficient. The following methods of non-linear data analysis are considered. Fast Fourier Transformation, autocorrelation, attractor reconstruction, correlation dimension, largest Lyapunov exponent and recurrence plot analysis were used to examine the correlation between bubbles behaviour and character of pressure fluctuations. Non-linear analysis of bubble departure synchronisation revealed that the way of bubble departures from two neighbouring nozzles does not depend simply on the character of pressure fluctuations in the nozzle air supply systems. The chaotic changes of the air pressure oscillations do not always determine the chaotic bubble departures.
Źródło:
Acta Mechanica et Automatica; 2019, 13, 3; 158-165
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Departures: An Introduction to Critical Refugee Studies by the Critical Refugee Studies Collective (A Book Review)
Autorzy:
Traina, Giacomo
Powiązania:
https://bibliotekanauki.pl/articles/27177631.pdf
Data publikacji:
2022
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Critical Refugee Studies
Departures: An Introduction to Critical Refugee Studies
a book review
immigration
emigration
Opis:
Departures is the introductory volume to the interdisciplinary field of Critical Refugee Studies, written by the Critical Refugee Studies Collective and published by the University of California Press. The book works on many levels and can be read in as many ways. Partly a guide, partly a manifesto, the book dutifully performs its pre-set task of introducing the general reader to the field of Critical Refugee Studies, all the while engaging with larger issues and challenges. Its manifold nature is made explicit by the title itself, intended both as an allusion to the action of leaving and to that of deviating from a regular path. Highly readable and sharp-edged, tailor-made for an audience that includes (and transcends) colleges and universities, this text will likely find its way into many class syllabi and reading lists. Located at the crossroads of theory and resistance, advocacy and academia, Departures oozes rage, energy, and optimism, and is unapologetically political. The field of Critical Refugee Studies, the authors state in the “Introduction,” is “a way to seize control of image and narrative, by and for refugees, centered in refugee epistemologies and experiences." As a community-engaged critical field, it postulates the necessity of moving past pre-existing humanitarian narratives and frameworks, exposing the underlying threads that tie militarism and migration, power and memory, empire and race. Channeling Somali British and Palestinian poetry, Syrian visual art, and Vietnamese American independent cinematography, the seven contributors call for new methodologies and approaches, as well as for new stories that go beyond the simple “formula of … escape, despair, and rescue” embedded in mainstream refugee narratives. The book's aim is to break that mold, underscoring the “invisible relations of power that broker how we see and consume the refugee subject”; that is to say, to radically twist the ways in which the latter is defined by the law, by the arts, and by the collective conscious. Bold and provocative, Departures will not fail to spark conversations in the coming years.
Źródło:
Review of International American Studies; 2022, 15, 2; 251-257
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
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