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    Wyświetlanie 1-4 z 4
    Tytuł:
    Hearing Protectors “Real-World” Performance and the European Directive 2003/10/EC
    Autorzy:
    Canetto, P.
    Voix, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/89970.pdf
    Data publikacji:
    2009
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2009, 15, 2; 221-226
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of Effective Noise Exposure of Workers Wearing Ear-Muffs
    Autorzy:
    Kotarbińska, E.
    Kozłowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/90912.pdf
    Data publikacji:
    2009
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    noise exposure
    hearing protectors
    earmuffs
    real-world attenuation
    Opis:
    This paper presents the methodology and the results of binaural measurements of exposure to noise for 91 industry workers wearing ear-muffs. The results revealed that 18.7% of the workers were exposed to noise of equivalent A-weighted sound pressure levels of over 80 dB(A) and 7.7% to levels of over 85 dB(A). The measured levels were compared with those calculated with the octave-band method according to Standard No. EN 458:2004. The differences ranged from – 3 dB(A) to 26.5 dB(A); their statistical distribution did not indicate any data which could suggest derating laboratory measurements. The main causes of exposure to noise higher by over 3 dB(A) than that theoretically predicted were the bad technical condition of ear-muffs (32.2% of the cases) and an incorrect way of wearing them (15.2%).
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2009, 15, 2; 193-200
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Workload and Performance Relationship in the Real World: A Study of Police Officers in a Field Shooting Exercise
    Autorzy:
    Oron-Gilad, T.
    Szalma, J. L.
    Stafford, S. C.
    Hancock, P. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/90596.pdf
    Data publikacji:
    2008
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    field study
    police officers
    shooting
    training
    workload
    performance
    Opis:
    We examined the relationship between perceived workload and performance by evaluating the responses of police officers to 4 different draw-and-shoot tasks in a night field training exercise which was part of their regular training regimen. Sixty-two police officers volunteered to participate. Results demonstrated an associative trend among 3 tasks where shooting performance decreased and workload increased as the tasks became more complex. However, performance on 1 specific shooting task did not correlate with any of the other 3 tasks, and in this 1 exceptional case, insensitivities were observed in which workload increased but performance remained constant.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2008, 14, 2; 119-131
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hearing Protectors: Topicality and Research Needs
    Autorzy:
    Canetto, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/89860.pdf
    Data publikacji:
    2009
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    occupational noise
    hearing protectors
    human behaviour
    attenuation
    real world
    derating
    subject-fit
    comfort
    research
    Opis:
    Occupational noise specialists do not generally recommend hearing protection devices (HPDs) as a preferred solution to noise risk prevention. Nevertheless, these devices are widely used and are in fact often necessary. Selection of an HPD should take into account comfort and the capacity for perceiving external signals, when they are worn. Current European regulations require that HPD attenuation be considered, when comparing noise exposure to limit values. However, HPD attenuation is effectively unknown under real-world conditions. Some methods are designed to give approximate attenuation values and these provide results within a wide statistical range. Field measurement methods and current standards have been developed to deal with this situation. The specific characteristic of impulse noise requires establishment of dedicated criteria and tools for HPD selection and testing. This paper introduces a number of avenues for research, which could be of assistance in improving HPD selection, qualification and design.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2009, 15, 2; 141-153
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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