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    Wyświetlanie 1-22 z 22
    Tytuł:
    Pocta nejstaršímu klávesovému anonymu
    Autorzy:
    Tůma, Jaroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/2078222.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Opolski. Diecezjalny Instytut Muzyki Kościelnej. Katedra Muzykologii Uniwersytetu Opolskiego
    Źródło:
    Folia Organologica. International yearbook of organ and organ music; 2021, 4; 171-185
    2657-6082
    2719-3284
    Pojawia się w:
    Folia Organologica. International yearbook of organ and organ music
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    VERNACULAR VIDEO ANALYSIS – COMMUNICATIVE CONSTRUCTION OF EVIDENCE IN POLICE WORK
    Autorzy:
    TUMA, RENÉ
    Powiązania:
    https://bibliotekanauki.pl/articles/1036402.pdf
    Data publikacji:
    2019-08-14
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    Sociology
    Sociology of Knowledge
    Interaction
    Videoanalysis
    Opis:
    AbstractThe use of video recordings for the production of knowledge has spread all over society. This paper presents an empirical study of the processes of interpretation of audio-visual recordings. It draws on an example in the context of police work and on the other side investigation of recordings of police violence. With a theoretical background in communicative constructivism special attention is given to situated bodily forms of “making things visible” performed by the participants. Interpretation is not understood as an pure cognitive but rather an communicative process. I elaborate on that by presenting results of (reflexive) videography of practices of video-interpretation. However, the specifics of the work are not only brought upon situatively, but are embedded in an institutional and organizational context. This paper draws on the concept of work arcs, that allow to highlight the trans-situative linkage.
    Źródło:
    Society Register; 2019, 3, 1; 137-162
    2544-5502
    Pojawia się w:
    Society Register
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hra zpaměti a varhaníci
    Memorisation and Organists
    Autorzy:
    Tůma, Jaroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/1965577.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Opolski. Diecezjalny Instytut Muzyki Kościelnej. Katedra Muzykologii Uniwersytetu Opolskiego
    Tematy:
    varhany
    varhaník
    hra zpaměti
    the Organ
    organ-player
    playing from memory
    Opis:
    Today, pianists as well as most other instrumentalists and singers regard memorisation as something absolutely essential and self-evident. Organists, however, face very special circumstances. Because of the existence of types of instruments that differ widely from each other, it is not very practical for organists to devote themselves to memorisation for a number of reasons. The article describes and presents the most important aspects of this issue, including a look at the history of performance practice.
    Źródło:
    Folia Organologica. International yearbook of organ and organ music; 2021, 4; 104-121
    2657-6082
    2719-3284
    Pojawia się w:
    Folia Organologica. International yearbook of organ and organ music
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Varhany v Betlémské kapli v Praze - poslední opus varhanářské dílny Vladimíra Šlajcha
    Autorzy:
    Tůma, Jaroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/2170554.pdf
    Data publikacji:
    2022-12-20
    Wydawca:
    Uniwersytet Opolski. Diecezjalny Instytut Muzyki Kościelnej. Katedra Muzykologii Uniwersytetu Opolskiego
    Tematy:
    organ
    Vladimír Šlajch
    Bethlehem Chapel in Prague
    Opis:
    Vladimír Šlajch was born in 1955 in Prague. Since 1978 he has been engaged in the repair and restoration of historic organs as well as the construction of new mechanical instruments. The last organ that came out of Šlajch's Borovan workshop is the organ for the Bethlehem Chapel in Prague. The article presents the history and technical details of this instrument.
    Źródło:
    Folia Organologica. International yearbook of organ and organ music; 2022, 5; 22-39
    2657-6082
    2719-3284
    Pojawia się w:
    Folia Organologica. International yearbook of organ and organ music
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ankieta historyczna
    Autorzy:
    Anušauskas, Arvydas
    Dominiczak, Henryk
    Eisler, Jerzy
    Gieseke, Jens
    Grajewski, Andrzej
    Jarosz, Dariusz
    Kratochvil, Irenej
    Neubert, Ehrhart
    Szapował, Jurij
    Tůma, Oldřich
    Powiązania:
    https://bibliotekanauki.pl/articles/477783.pdf
    Data publikacji:
    2003
    Wydawca:
    Instytut Pamięci Narodowej, Komisja Ścigania Zbrodni przeciwko Narodowi Polskiemu
    Źródło:
    Pamięć i Sprawiedliwość; 2003, 1(3); 23-50
    1427-7476
    Pojawia się w:
    Pamięć i Sprawiedliwość
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The (Re)Construction of Human Conduct: “Vernacular Video Analysis”
    Autorzy:
    Tuma, René
    Powiązania:
    https://bibliotekanauki.pl/articles/2108248.pdf
    Data publikacji:
    2012-08-30
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    Vernacular Video Analysis
    Ethnomethodology
    Interpretation
    Interaction
    Video
    Workplace Studies
    Visual Knowledge
    Reflective Methods
    Scientific Practice
    Experts
    Opis:
    Video technology became available in the 1960s and massively diffused into nearly all institutional spheres during the following decades (Zielinski 1986). It is not only used for provision of movies and entertainment (Greenberg 2008), documenting, and recording of events in the semi-professional and private domain (Raab 2008), but also for the analysis of human conduct in psychology and education (Mittenecker 1987) and in sociology (Knoblauch et al. 2006; Knoblauch et al. 2008; Kissmann 2009; Heath, Hindmarsh and Luff 2010). In this paper, I am going to argue that with the availability of video technology a form of discursive practice of interpretive (re)construction of knowledge has been established in a variety of vernacular fields of practice. Based on the available literature and an empirical example taken from a public demonstration of such a vernacular video analysis, I will show some elements of communicative practice that allow for detailed analysis of visual knowledge. Furthermore, I will discuss methodological issues, as to be approached, and which elements can be found that constitute the communicative (re)constructive processes of analysis. 
    Źródło:
    Qualitative Sociology Review; 2012, 8, 2; 152-163
    1733-8077
    Pojawia się w:
    Qualitative Sociology Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Active rotor vibration control
    Aktywne sterowanie drganiami wirnika
    Autorzy:
    Viteckova, M.
    Vitecek, A.
    Tuma, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/369032.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    łożyska ślizgowe
    aktywne sterowanie drganiami
    drgania wirnika
    active vibration control
    rotor vibration
    journal bearings
    Opis:
    The article deals with the analysis of active vibration control of a rotor which is supported by journal bearings. The oil fi lm between the journal and bushing induces the rotor instability, which causes rotor vibrations if rotational speed is greater than a threshold of system stability. This phenomenon is very important for high-speed rotational machines for which restricts the operational range of the rotational speed. Therefore increasing the rotor stability threshold is very important for preventing rotor vibrations. The rotor instability results in lateral vibrations which do not conform to the forces of the unbalanced masses or other external forces. The frequency of the lateral vibration is slightly less than half of the rotational frequency. The main result of the article is the analytical determination of the infl uence of the setting of the PD type controller on the threshold of stability.
    Artykuł omawia analizę aktywnego sterowania drganiami wirnika podpartego łożyskami ślizgowymi. Film olejowy w szczelinie pomiędzy czopem i panwią łożyska wywołuje niestabilność wirnika, co dla prędkości obrotowej większej od progu stabilności systemu powoduje jego drgania. Zjawisko to jest bardzo ważne dla maszyn o wysokich prędkościach obrotowych, ponieważ ogranicza zakres prędkości roboczych. Dlatego podwyższenie progu stabilności wirnika jest bardzo znaczące dla zapobiegania drgań wirnika. Niestabilność wirnika przejawia się drganiami poprzecznymi, które nie są w zgodzie z siłami niewyważenia oraz pozostałymi siłami zewnętrznymi. Częstotliwość tych drgań poprzecznych jest nieco mniejsza niż połowa częstotliwości obrotowej wirnika. Podstawowym wkładem artykułu jest analityczne pokazanie wpływu regulatora PD na próg stabilności wirnika.
    Źródło:
    Mechanics and Control; 2013, 32, 2; 77-81
    2083-6759
    2300-7079
    Pojawia się w:
    Mechanics and Control
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Doing exposed correction in the language class-room: A conversation analysis perspective
    Autorzy:
    Tůma, František
    Fořtová, Nicola
    Powiązania:
    https://bibliotekanauki.pl/articles/2135339.pdf
    Data publikacji:
    2020-12-01
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    conversation analysis
    correction
    repair
    classro om interaction
    English as a foreign language
    Opis:
    Exposed correction can be seen as a tool whose use on the one hand temporarily stops the progressivity of the talk, but at the same time makes it possible for the speakers in interaction to clarify problems that have occurred, both in mundane conversation and institutional talk. Using conversation analysis, a dataset of 18 teaching hours (1585 minutes of video-recordings of whole-class work in total) was examined to identify and describe the practices used by learners and teachers in English as a foreign language (EFL) classrooms when conducting exposed correction. The analysis shows that in exposed correction sequences there seems to be a requirement for the learners to produce a reaction to teacher correction. While learners typically repeat the correct form after the teacher has corrected them in a correction sequence that the learners initiated by displaying trouble producing the target language form, teacher-initiated sequences tend to generate minimal post-expansion on the part of the learners. When no student response comes, the teacher may expand the correction sequence. 
    Źródło:
    Yearbook of the Poznań Linguistic Meeting; 2020, 6, 1; 221-242
    2449-7525
    Pojawia się w:
    Yearbook of the Poznań Linguistic Meeting
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Doing exposed correction in the language class-room: A conversation analysis perspective
    Autorzy:
    Tůma, František
    Fořtová, Nicola
    Powiązania:
    https://bibliotekanauki.pl/articles/2135342.pdf
    Data publikacji:
    2020-12-01
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    conversation analysis
    correction
    repair
    classro om interaction
    English as a foreign language
    Opis:
    Exposed correction can be seen as a tool whose use on the one hand temporarily stops the progressivity of the talk, but at the same time makes it possible for the speakers in interaction to clarify problems that have occurred, both in mundane conversation and institutional talk. Using conversation analysis, a dataset of 18 teaching hours (1585 minutes of video-recordings of whole-class work in total) was examined to identify and describe the practices used by learners and teachers in English as a foreign language (EFL) classrooms when conducting exposed correction. The analysis shows that in exposed correction sequences there seems to be a requirement for the learners to produce a reaction to teacher correction. While learners typically repeat the correct form after the teacher has corrected them in a correction sequence that the learners initiated by displaying trouble producing the target language form, teacher-initiated sequences tend to generate minimal post-expansion on the part of the learners. When no student response comes, the teacher may expand the correction sequence. 
    Źródło:
    Yearbook of the Poznań Linguistic Meeting; 2020, 6, 1; 221-242
    2449-7525
    Pojawia się w:
    Yearbook of the Poznań Linguistic Meeting
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Congruence lattices of free lattices in non-distributive varieties
    Autorzy:
    Ploščica, Miroslav
    Tůma, Jiří
    Wehrung, Friedrich
    Powiązania:
    https://bibliotekanauki.pl/articles/966045.pdf
    Data publikacji:
    1998
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Tematy:
    diamond
    congruence splitting lattice
    Kuratowski's Theorem
    Uniform Refinement Property
    congruence lattice
    pentagon
    Źródło:
    Colloquium Mathematicum; 1998, 76, 2; 269-278
    0010-1354
    Pojawia się w:
    Colloquium Mathematicum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Expert Teachers’ Interactive Cognition: an Analysis of Stimulated Recall Interviews
    Autorzy:
    Tůma, František
    Píšová, Michaela
    Najvar, Petr
    Janíková, Věra
    Powiązania:
    https://bibliotekanauki.pl/articles/2031656.pdf
    Data publikacji:
    2014-06-30
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    interactive cognition
    stimulated recall
    pedagogical content knowledge
    foreign language teaching
    Opis:
    The presented study focuses on the interactive cognition of expert teachers during their teaching. 16 foreign language teachers’ lessons were videotaped and the teachers were asked to reveal their interactive cognition through a stimulated recall interview. The verbal protocols were then analyzed in the light of argumentation analysis and the claims were subject to content analysis. The results showed that individual teachers varied greatly as regards their percentages of stimulated recall as well as other aspects of their interactive cognition, which supports the prototypical view of teacher expertise.
    Źródło:
    The New Educational Review; 2014, 36; 289-299
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Trends in Foreign Language Didactics Research: a Thematic Analysis of PhD Dissertations from the Czech Republic and Abroad (2006–2012)
    Autorzy:
    Tůma, František
    Píšová, Michaela
    Powiązania:
    https://bibliotekanauki.pl/articles/16530375.pdf
    Data publikacji:
    2013-12-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    foreign language didactics
    research
    thematic analysis
    PhD dissertations
    Opis:
    The aim of this study is to present the results of analyses of PhD dissertations defended abroad and in the Czech Republic in the years 2006–2012 in the field of foreign language didactics. Building on a body of previous work, methodological background for a meta-analysis of the topics of PhD dissertations defended in selected countries abroad as well as for an analysis of PhD dissertations defended in the Czech Republic is presented. The results are then discussed and compared. We conclude that the range of topics addressed in the Czech dissertations does not significantly differ from the state of art abroad, although some areas, such as language learners, seem to be under-researched in the Czech Republic.
    Źródło:
    The New Educational Review; 2013, 34; 125-137
    1732-6729
    Pojawia się w:
    The New Educational Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accumulation, distribution and redistribution of 109Cd and 65Zn in wheat (Triticum aestivum L.) and bean (Phaseolus vulgaris L.) plants on nutrient media with elevated zinc or cadmium
    Autorzy:
    Simek, J.
    Tuma, J.
    Feller, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/14365.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Źródło:
    Journal of Elementology; 2019, 24, 3
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation study of the non-collocated control of a cantilever beam
    Badania symulacyjne aktywnego sterowania drganiami belki wspornikowej
    Autorzy:
    Tuma, J.
    Mahdal, M.
    Suranek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/973155.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    cantilever beam
    non-collocated control
    simulation
    active suppression of vibrations
    belka wspornikowa
    sterowanie
    symulacja
    aktywna redukcja drgań
    Opis:
    This article deals with the simulation of the active vibration control of a cantilever beam. For these purposes, a lumped parameter model has been developed and the simplest controller has been designed to ensure the structural stability of the control loop. The controller is of a proportional velocity feedback type. The control loop can also be stable in the case of a very small inherent damping of the cantilever beam. The lumped-parameter model is based on the Euler-Bernoulli beam theory. The developed tools can be used to simulate the collocated and non-collocated active vibration control. Since this article is intended to study the behaviour of a non-collocated control system of the transducer is sensing the vibration of the free end of the beam, while the actuator force acts near the fixed end.
    Artykuł dotyczy symulacji aktywnego sterowania drganiami belki wspornikowej. W tym celu zaproponowano model o parametrach skupionych oraz najprostszy regulator, który zapewnia stabilność strukturalną. Zastosowano regulator proporcjonalny, z prędkościowym sprzężeniem zwrotnym. Pętla sterowania może być stabilna nawet w przypadku bardzo małego tłumienia drgań własnych belki. Model o parametrach skupionych został wyprowadzony na podstawie teorii Eulera-Bernoulliego. Zaproponowane podejście może zostać zastosowane do symulacji aktywnego sterowania drganiami w przypadku, gdy czujnik i element wykonawczy są umieszczone w tym samym miejscu bądź w różnych miejscach na belce. Ponieważ artykuł dotyczy badań własności aktywnego sterowania drganiami w drugim z tych przypadków,przetwornik pomiarowy drgań został umieszczony na swobodnym końcu belki, natomiast element wykonawczy działa na utwierdzonym końcu.
    Źródło:
    Mechanics and Control; 2013, 32, 3; 110-116
    2083-6759
    2300-7079
    Pojawia się w:
    Mechanics and Control
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Význam výchovy v pojímaní J. A. Komenského
    The Importance of Education in the Conception of J. A. Comenius
    Znaczenie edukacji w koncepcji J. A. Comeniusa
    Autorzy:
    Tůma, Jiří
    Laca, Slavomír
    Shánilová, Ivana
    Powiązania:
    https://bibliotekanauki.pl/articles/2460159.pdf
    Data publikacji:
    2021
    Wydawca:
    Wyższa Szkoła Ekonomiczno-Humanistyczna w Bielsku-Białej
    Tematy:
    children
    youth
    activities
    education
    educated
    Děti
    Mládež
    Působení
    Výchova
    Vzdělávání
    Opis:
    Influencing children and youth through education has an important effect on the direction of society evolution and is crucial for the development of social and intercultural relations, this creation is in line with the timeless ideas of J.A. Comenius and leads us to why it is necessary to be constantly aware of mistakes and to look for meaningful meanings of things in the field of education. In his work, he tried to find the basic reasons for educating children, youth and solutions to related issues.
    Ovlivňování dětí a mládeže za pomoci vzdělávání a výchovy má důležitý vliv na směr vývoje společnosti a je určující pro vývoj sociálních a interkulturních vztahů, toto vytváření je v souladu s nadčasovými myšlenkami J. A. Komenského a vede nás k tomu, proč je nezbytné neustále si uvědomovat chyby a hledat tak smysluplné významy věcí z oblasti výchovy. V jeho díle se pak pokusit najít základní důvody, jak výchovně působit na děti, mládež a řešení související problematiky.
    Źródło:
    Polonia Journal; 2021, 13; 51-62
    2083-3121
    Pojawia się w:
    Polonia Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Properties of drinking yogurt obtained from cow’s and goat’s organic milk fermented by traditional yogurt cultures
    Autorzy:
    Mituniewicz-Małek, A.
    Ziarno, M.
    Dmytrów, I.
    Tuma, P.
    Witczak, A.
    Vovk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/101636.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    organic cow’s milk
    goat milk
    fermented milk drink
    yogurt cultures
    Opis:
    This paper presents an assessment of selected qualitative attributes of fermented drinks obtained from organic cow’s and goat’s milk by using yogurt cultures in 10-day refrigeration storage process (5 ± 1°C). The raw material was purchased in organic farms located in north-west Poland. Two yogurt starters obtained from the Chr. Hansen company were used in the study: YC-X16 and YF-L811. Both cultures contained Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus. These cultures did not differ in the qualitative content of the lactic acid bacteria but their use allows for obtaining products with different qualitative properties. Four variants of yogurt were produced: i. J-X16 - yogurt from cow’s milk with YC-X16 culture, ii. J-L811 - yogurt from cow’s milk with YF-L811 culture, iii. KJ-X16 - yogurt from goat’s milk with YC-X16 culture, iv. KJ-L811 - yogurt from goat’s milk with YF-L811culture. All samples of fermented milk were subjected to microbiological, physico-chemical, rheological (hardness) analyzes and a sensory assessment (PN-EN ISO 6658:1998). It was determined that the yogurt cultures (YE-L811 and YC-X16) used in the experiment are worthy of recommendation for the production of fermented milk from both organic acidity, pH and hardness), the vitality of the microflora as well as sensory properties of yogurt from organic cow’s and goat’s milk depended on the type of used yogurt culture and time of refrigeration storage. The type of used milk has no impact on the vitality of the microflora.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, IV/3; 1755-1771
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Petr Eben a jeho skladby pro varhany. Poznámky k tradici jejich provádění, k interpretaci a jejím parametrům
    Petr Eben and His Works for Organ. Comments on the tradition of their performance and interpretation
    Autorzy:
    Tůma, Jaroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/570401.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Opolski. Diecezjalny Instytut Muzyki Kościelnej. Katedra Muzykologii Uniwersytetu Opolskiego
    Tematy:
    Petr Eben – skladatel
    interpretace
    varhany
    Petr Eben – composer
    interpretation
    organ
    Opis:
    The music of the important Czech composer, who would have turned ninety on 22 January 2019 when we commemorated the anniversary of his birth, constitutes one of the most important enhancements of the Czech artistic environment in the world of culture of the latter half of the twentieth century. Petr Eben earned recognition, and his organ music has even been compared with the legacy of Olivier Messiaen. The composer understood the organ as the instrument to which his fate was bound. By the age of ten, he already held the position of organist at Saint Vitus’s Church in Český Krumlov. He would seat himself at the big threemanual instrument in the early evening, locked inside the church, leaving time and the world behind during his lengthy improvisations. “I think it was then and there that my whole personality took shape.” Perhaps every organist was playing Eben’s works in my student days. After the composer’s death in 2007, however, interest in his music declined somewhat, but I still keep returning to his compositions with growing frequency, especially to certain of his works. At the same time, I am aware of how in my thinking, and I definitely am not alone in having this experience, as time goes by there is a maturing not only of my image of the works themselves but also of the possible, desirable, and in a sense perhaps even modern manner of their interpretation, especially with respect to the choice of ideal instruments. Musicians often base the success of their performances on the depth and intensity of experience, and especially on spontaneous, momentary inspiration on stage. Only a few are so grounded in reason that they always think through how they will perform a work down to the last detail in advance and never deviate from that line in the least when playing. In the long run, however, a combination of these two approaches tends to be most successful, so that besides spontaneity, there is a constant consideration of relationships between formal and tectonic structures and harmonic and thematic contexts, leading to a clarification of details and a continually improving and more precise rendition of the whole, and this then begins to be reflected in the formation of a kind of tradition of the performing of the works. That tradition ultimately does not tend to be the result of the activity of a single performer, but instead it arises from a long series of performances of the works in question by various interpreters. A performer should master all of the basic parameters of a work and its interpretation. A melody must always remain a melody, and a phrase must always be a phrase. The relationships between individual sections must be clear and comprehensible to an audience member sitting and listening far away from the organ in the nave of the church or in the last row of the concert hall. The ear must be capable of perceiving every single note of each moving sequence of fast tones. The vertical structure must be equally comprehensible, so every chord needs to be played so that it can be deciphered even from a great distance. At the same time, however, Eben’s music must retain its overall character. As the composer said: “In my music, there is far more drama than meditation.” Today, learning and performing any of Petr Eben’s greatest works is a real challenge for organists. In some cases, I encounter interpretations that appear to have come into being without continuity and that do not proceed along the lines that have been tried and proven, but at the same time, it seems to me that they go to the heart of the matter and that they respect the composer’s deepest intentions and motivations. From my perspective, this may be the thing that shows most clearly that Petr Eben’s organ music definitely will not disappear into the ash heap of history.
    Źródło:
    Folia Organologica. International yearbook of organ and organ music; 2018, 1; 75-81
    2657-6082
    2719-3284
    Pojawia się w:
    Folia Organologica. International yearbook of organ and organ music
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Velké svatohorské varhany ‒ ideální nástroj pro interpretaci hudby J. S. Bacha v českých zemích
    The great Svatá Hora organ – the ideal instrument for interpreting the music of J.S. Bach in the Czech Republic
    Autorzy:
    Tůma, Jaroslav
    Powiązania:
    https://bibliotekanauki.pl/articles/570457.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Opolski. Diecezjalny Instytut Muzyki Kościelnej. Katedra Muzykologii Uniwersytetu Opolskiego
    Tematy:
    Svatá Hora
    J.S. Bach skladatel
    interpretace
    J.S. Bach composer
    interpretation
    Opis:
    Vladimír Šlajch’s organ at Svatá Hora in Příbram draws to a close an important stage of his life. Having had equal success building other organs, the most important and largest of which is in the German town Bruchsal, this instrument represents a unique achievement. These days we usually encounter organs that conform to the wishes of organists and organ experts that every new instrument be built primarily with the convenience of the performer in mind. The organ at the Basilica of Our Lady of Svatá Hora is different. Instead, it embodies a synthesis of original solutions and tried-and-true traditions. Vladimír Šlajch built it as a sort of tribute to the organ builders who once worked in Bohemia. The decorating of the prospect pipes makes reference to Abraham Starck from Loket, Ondřej Kokštejn from Příbram, and the organ builder Bedřich Semrád from the Central Povltaví Region. The tracker action for the manuals and registration is mechanical. Because of this tracker action constructed strictly in accordance with Baroque models, the organ makes an audible clicking sound when played, and in addition, because of differing distances for individual connections, the clicking is not equally loud for each note. The clicking bothers many organists, but the organ builder insists that the design is justified, using centuries of organ building tradition as his argument. In my opinion, playing the great Svatá Hora organ successfully depends upon approaching it with a great deal of humility and upon the ability to adapt oneself to the instrument, along with having a deep understanding of the features specific to the organ. It is true that the level of disruptive clacking noise reveals the organist’s particular style of playing, but it is also true that the attempt to make less noise forces each of us not only to depress, but also to release the keys as carefully as possible, and with this kind of tracker action, moving one’s fingers in this way naturally also influences the sound of legato passages and the smoothness of the phrasing. While the attempt to play without making noise is entirely futile, especially when using quieter registration, it has an absolutely fundamental influence over the quality of the melodic lines within the context of the polyphony, and that influence is clearly for the better. From the layout of the instrument, we clearly see the wealth of sonic possibilities at our disposal. The many colours of the registers can be combined into an almost inexhaustible quantity of shadings. While the organ is intended for playing older music, mainly of the Renaissance, Baroque, and Classical eras, neither Romantic nor contemporary compositions are out of the question. One must simply consider which ones to choose and which ones would be less appropriate, because although the tuning is set at a' = 440 Hz at 18 degrees Celsius, the temperament is slightly unequal, reminiscent of Valotti tuning. The spatial layout of the individual divisions of the Svatá Hora is quite unusual, but it still respects longstanding tradition. The manuals have a chromatic range from C to f'''. The Great division (manual II) takes up the two most spacious parts of the organ case. It is divided into a C and C sharp side. A smaller division called the Positiv, placed in front above the organist’s head, is connected to a third manual. The first manual plays the Unterwerk or Choir division, which is divided into bass and discant. Each register of the Unterwerk is activated separately for the bass and discant on the left and right sides of the console. The organ builder placed the Unterwerk right behind the console in the pedestal of the organ. Like the Great division, the Pedal is divided into a C and C sharp side, and each takes one of the adjacent loft areas on the sides. On the other hand, a three-rank pedal Cornet plays from the Crown Positiv or Kronwerk located at the top just under the vault. Representing a peculiar feature are the two sets of chimes (Zimbelstern), which are located on the pedal cases on opposite sides. A noteworthy property of the organ at Svatá Hora is its sonic versatility, perhaps even universality to a certain extent. If you listen to it, you soon get the impression that you are hearing a Czech or south-German Baroque sound, then it suddenly seems that you have found yourself listening to a Silberman organ in nearby Saxony, until finally you notice a passage that seems to come from the Baltic, with sounds of the ideal organ of Bach’s forerunners of the north-German school. Then the combination of the Principal on the Great manual and the Bifara stop tuned to create vibrato makes us wonder, might we perhaps be in Italy? And at the same time, although the organ is in a Catholic church, the instrument seems to the organist to be in perfect accord with the music of Johann Sebastian Bach. The acoustics and reverberation here are exceedingly suited to the spirit of Bach’s Protestantism. The Svatá Hora organ is indispensable for the successful interpretation of Bach’s music within the context of this region. Notwithstanding all of their beauty, the Baroque organs of Bohemia have a small range of tones, with a lack of the needed keys, pedals, and registers, while the later organs are oriented towards the Romantic musical style, and even newer organs usually suffer from insufficient artistic quality caused mainly by mass production methods. By contrast, the new Svatá Hora organ is of great artistic worth; it even fits the basilica perfectly from a visual perspective. Once the organ was finished, we could hardly imagine that not long beforehand the instrument had not yet been installed. These days, an organ is very rarely so perfectly matched to the place for which it is intended.
    Źródło:
    Folia Organologica. International yearbook of organ and organ music; 2019, 2; 93-101
    2657-6082
    2719-3284
    Pojawia się w:
    Folia Organologica. International yearbook of organ and organ music
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of cadmium dose and form on the yield of oat (Avena sativa L.) and the metal distribution in the plant
    Wpływ dawki i formy kadmu na plon i dystrybucję metalu w owsie (Avena sativa L.)
    Autorzy:
    Tuma, J.
    Skalicky, M.
    Tumova, L.
    Flidr, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/14537.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    cadmium dose
    cadmium form
    yield
    oat
    Avena sativa
    metal distribution
    plant
    photosynthesis rate
    translocation
    interaction
    Opis:
    The influence of two levels of artificial Cd soil contamination (2 and 20 mg Cd kg-1 of soil) on the weight of oat plants, chlorophyll content in leaves, rate of photosynthesis, stomatal conductivity and transpiration rate was researched in a pot experiments with Avena sativa L. Another objective was to detect the effect of cadmium contamination of soil on the content of cadmium in the dry mass of oat panicles, stems, upper green and bottom yellow leaves and roots. The soil contamination was applied in the forms of nitrate Cd(NO3)2, chloride CdCl2 and sulphate CdSO4 2-. High correlation was found between the measured levels of photosynthesis rate, stomatal conductivity and transpiration rates, but no correlation occurred between these levels and the cadmium content in leaves. In the variants with Cd contamination, insignificantly higher levels of photosynthesis rates were observed in the measurements than in the zero variant. A 10-fold higher Cd application dose significantly manifested itself by a higher content of Cd in all the analyzed parts of plants, including generative organs. A several-fold higher Cd level was found in the roots than in other parts of the plant, whereas the lowest Cd content was observed in panicles. However, the results obtained by measuring the cadmium content in stems and green leaves were not significant. In most treatments, a notably higher Cd content was determined in bottom yellow leaves than in upper green leaves. This indicates Cd accumulation in senescent tissues and its difficult reutilization. The highest variance was discovered in treatments with the accompanying SO4 2- anion. While estimating the effect of accompanying anions on the Cd content, significant differences were observed only under the higher level of Cd contamination. The increase in the Cd content in bottom yellow leaves after CdSO4 application was significant when compared with the treatment in which Cd(NO3)2 was applied and insignificant versus the variant with CdCl2. On the other hand, a higher and more significant content of Cd in phtosynthetically active green leaves was measured in the treatment with CdCl2 than with Cd(NO3)2.
    W eksperymentach z Avena sativa L. zbadano wpływ 2 poziomów sztucznego zanieczyszczenia gleby Cd (2 i 20 mg Cd kg-1 gleby) w postaci Cd(NO3)2, CdCl2 i CdSO4 2- na masę roślin owsa, zawartość chlorofilu w liściach, tempo fotosyntezy, przewodność szparkową i szybkość parowania, a także na zawartość kadmu w suchej masie wiechy, łodyg, górnych i dolnych zielonych i żółtych liści oraz korzeni. Wysoki poziom korelacji stwierdzono między mierzonymi poziomami intensywności fotosyntezy, przewodności szparkowej i szybkości transpiracji, nie wykazano jednak korelacji między tymi poziomami i zawartością kadmu w liściach. W wariantach z zanieczyszczeniem Cd zaobserwowano nieznacznie wyższy poziom fotosyntezy w pomiarach w porównaniu z wariantem zerowym. W przypadku 10-krotnie większej intensywności stosowania kadmu wykazano istotnie większą zawartość Cd we wszystkich monitorowanych częściach roślin, w tym w organach generatywnych. Kilkakrotnie wyższy poziom Cd niż w innych częściach rośliny stwierdzono w korzeniach, a najmniejszy w wiechach, jednak dane uzyskane podczas pomiaru zawartości kadmu w łodygach i zielonych liściach nie były znaczące. W porównaniu z górnymi liśćmi, zauważalnie większą zawartość Cd w większości poddanych eksperymentowi roślin stwierdzono w dolnych żółtych liściach. Wskazuje to na akumulację Cd w starzejących się tkankach i trudności z jego przetworzeniem. Największą różnicę wykazano w próbkach z anionem towarzyszącym SO4 2-. Podczas ewaluacji wpływu anionów towarzyszących na zawartość Cd istotne różnice wystąpiły jedynie w przypadku wyższego poziomu zanieczyszczenia Cd. Znaczący wzrost zawartości Cd po zastosowaniu CdSO4 zaobserwowano w dolnych żółtych liściach, w porównaniu z próbkami, w których zastosowano Cd(NO3)2 natomiast nieznaczny – w porównaniu z próbkami, w których użyto CdCl2. Zdecydowanie największą zawartość Cd w zielonych liściach o aktywnej fotosyntezie stwierdzono w roślinach poddanych działaniu CdCl2 w porównaniu z tymi, w przypadku których użyto Cd(NO3)2.
    Źródło:
    Journal of Elementology; 2014, 19, 3
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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