1,721,845 research outputs found
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
Unconventional interceptors in still water and in regular waves: Experimental study on resistance reduction and dynamic instability
No full textGeneral practitioners’ familiarity with sudden infant death syndrome in the UK: the results of the SIDS Project
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Unconventional interceptors in still water and in regular waves: Experimental study on resistance reduction and dynamic instability
No full textThe study on Interceptors performed last years at the Università degli Studi di Napoli "Federico II" shown the high potentiality of the unconventional device Double Interceptors System (DIS). This paper supplies data on the new tests carried out on prismatic models fitted with DIS and towed in still water and in regular waves. The experimentation has been performed on three model whose deadrise angles β are 10, 20 and 30 deg. The still water tests highlighted the effect of deadrise on the DIS efficiency and explained the cause of dynamic instability observed at high value of Fn∇. The data on the behaviour of the DIS in regular waves concern the early stage of a study currently in progress. The paper shows the mean values of RT measured, at Fn∇ =2.15, on β 20 model crossing regular waves with different frequencies and heights. Furthermore resistance variations, pitch, heave and vertical accelerations measured in two points are shown in time domain. The study confirmed that both in the sailing conditions, still and regular waves, the DIS provides great resistance reductions: up to 35% (β 10 deg, Fn∇ =2.25 - in still water) and 48% (β 20, Fn∇ =2.15 and high frequency of encounter - in regular waves)
Sudden infant death syndrome: Knowledge of its risk factors among italian healthcare professionals
No full textThis paper focuses on healthcare professionals' knowledge about risk and protective factors of Sudden Infant Death Syndrome. We adapted a Rasch model to obtain an index of unpreparedness which we then analysed with a random logistic regression model. Healthcare professionals from different regions present significant differences in their knowledge. All healthcare professionals, especially physicians, show a significantly lower knowledge than paediatricians. Similar conclusions can be drawn with respect to those not working in birth centres or in family planning clinics. © 2012 Università del Salento
SUDDEN INFANT DEATH SYNDROME: KNOWLEDGE OF ITS RISK FACTORS AMONG ITALIAN HEALTHCARE PROFESSIONALS
No full textThis paper focuses on healthcare professionals’ knowledge about risk
and protective factors of Sudden Infant Death Syndrome.
We adapted a Rasch model to obtain an index of unpreparedness which we then
analysed with a random logistic regression model.
Healthcare professionals from different regions present significant differences in
their knowledge. All healthcare professionals, especially physicians, show a significantly
lower knowledge than paediatricians. Similar conclusions can be
drawn with respect to those not working in birth centres or in family planning
clinics
Biological control and insect pathology
Full text link: Agro-forestry intensification is one of the main drivers of the global biodiversity crisis and decline in arthropods and particularly insects [...]
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