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    Wyświetlanie 1-2 z 2
    Tytuł:
    Handling ambient temperature changes in correlative thermal error compensation
    Autorzy:
    Naumann, Christian
    Geist, Alexander
    Putz, Matthias
    Powiązania:
    https://bibliotekanauki.pl/articles/28407326.pdf
    Data publikacji:
    2023
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    machine tool
    thermal error
    correlative compensation model
    ambient effect
    ETVE
    environmental temperature variation error
    Opis:
    Thermal errors are one of the leading causes for positioning inaccuracies in modern machine tools. These errors are caused by various internal and external heat sources and sinks, which shape the machine tool’s temperature field and thus its deformation. Model based thermal error prediction and compensation is one way to reduce these inaccuracies. A new composite correlative model for the compensation of both internal and external thermal effects is presented. The composite model comprises a submodel for slow long- and medium-term ambient changes, one for short-term ambient changes and one for all internal thermal influences. A number of model assumptions are made to allow for this separation of thermal effects. The model was trained using a large number of FE simulations and validated online in a five-axis machine tool with measurements in a climate chamber. Despite the limitations, the compensation model achieved good predictions of the thermal error for both normal ambient conditions (21°C) and extreme ambient conditions (35°C).
    Źródło:
    Journal of Machine Engineering; 2023, 23, 4; 43--63
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    “Acoustic wallpaper” under control – the case of musique d’ameublement and Muzak
    Autorzy:
    Makomaska, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/2122174.pdf
    Data publikacji:
    2021-11-21
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    acoustic engineering
    audiomarketing
    Brian Eno
    ambient music
    Muzak
    Erik Satie
    musique d’ameublement
    effect of “acoustic wallpaper”
    peripheral attention
    Opis:
    Attention is one of the most important cognitive processes. Its functioning and key characteristics play a vital role in the perception of music, especially in everyday situations when music becomes an acoustical background. Thanks to selectiveness, shift and division of attention, the listener can balance between an active and a passive act of listening, however, the results of auditory perception may be difficult to determine. Can the sender, in the process of musical communication, manage the listener’s attention in such a way as to achieve the effect of “acoustic wallpaper” understood as a perception-based effect of background music, where music, in line with the sender’s intentions, is located in the peripheral zone of the listener’s attention, within extensive attention? What function, from the perspective of the sender, is performed by “acoustic wallpaper”? Is it a target result or a mechanism leading to cer- tain reactions in an indirect way? What factors play a decisive role for the efficiency of an adopted strategy? The main aim of this article is to answer the above questions by the analysis of two exemplary concepts of background music (musique d’ameublement by Erik Satie and Muzak) through the prism of the author’s theoretical model of “acoustic wallpaper” (Makomaska, 2021). This novel ap- proach derives from the psychologically-based reciprocal feedback model of musical response (hargreaves, et al., 2005) and socio-musicological studies on pragmatic forms of musical communication (brown, 2006). It assumes that the effectiveness of “acoustic wallpaper” being under control of the sender (the composer or a professional company) is conditioned by correlations between structural characteristics of music, the listener, and historical-social context. The analysis shows that the intended functions of background music (seen from the perspective of the sender) can differ from the real ones and in the case of particular concepts can be moderated by various groups of factors. The results provoke further discussion on the application potential of the proposed model in psychologically, historically and/or marketing-oriented studies on such concepts as e.g. ambient music and contemporary audiomarketing strategies implemented in commercial environments, where music located on the periphery of the listener’s attention can become an effective tool of mani- pulation.
    Źródło:
    Interdisciplinary Studies in Musicology; 2021, 21; 39-55
    1734-2406
    Pojawia się w:
    Interdisciplinary Studies in Musicology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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