1,720,969 research outputs found
Protection effectiveness of anti-vibration gloves: field evaluation and laboratory performance assessment
No full textValutazione del rischio da vibrazioni whole body in una popolazione di collaudatori di pneumatici
No full textProtection effectiveness of anti-vibration gloves: field evaluation and laboratory performance assessment
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Use of sound-absorbing panel to reduce noisy incubator reverberating effects
No full textOBJECTIVES:
To assess the amplification and distortion of noise in incubators by measuring noise levels from various sources under various conditions.
STUDY DESIGN:
We recorded sound pressure levels (SPL) of background noise, baby crying, alarms and porthole closing with the incubator hood open or closed. Then we tried to reduce the sound level in the incubator by applying a sound absorbing panel to the ceiling of the hood.
RESULTS:
The sound sources analysed produced very high SPL. In free field baby crying and porthole noise were, respectively, 81-83 dB and 70-71 dB, closing the hood they raised to 84-87 and 73-74 dB: this means that the noise perceived by a baby in the incubator had twice the SPL of the same noise emitted in a free field; alarm noise was 56-57 dB inside incubators. Sound emitted inside the hood was also distorted, i.e. it had different features from the same source in a free field. The insulating panel prevented amplification and distortion due to the hood and reduced the SPL of alarms. Only background noise did not decrease with the panel. Sound absorbing panel reduced baby's crying, porthole noise and alarm noise SPL to 82-85, 70-71 and 50-51 dB, respectively.
CONCLUSIONS:
Incubators are reverberating environments, which amplify the baby's cry and other noises produced inside the hood. The frequency components of noises are altered by the hood. The sound absorbing panel reduced this phenomenon
Electromagnetic fields produced by incubators influence heart rate variability in newborns
No full texttinnitus due to exposure to ultrasounds produced by an antimosquito app for cellular phones?
No full textUltrasounds are more and more common in everyday life, sometimes in subtle forms. their effects have been described and some precaution is recommended. We report the case of a 48-year-old man who suffered a long-lasting painful tinnitus for several weeks. Most causes for this disease were ruled out, and the most likely was the night exposure to continuous ultrasounds (US) emitted by an antimosquito web application installed in his smartphone. We describe the US specter emitted by the smartphone and discuss the risks of this kind of US according with the current guidelines for US-linked diseases prevention
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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