1,721,963 research outputs found
POETICA
No full textIl concetto di poetica nella creazione e nel creato: distinzioni e valutazioni di materiali antichi e modern
A three-dimensional damage model to simulate the progressive failure of composite structures
No full textA three-dimensional damage model has been
developed to simulate the progressive failure of
thin composite structures. Both intralaminar
and interlaminar damage mechanisms have
been considered and the proposed constitutive
model has been developed on the basis of
thermomechanics of the nonlinear irreversible
physical process. The intralaminar damage
modes has been analysed in the context of the
Continuum Damage Mechanics, whereas the
interlaminar damage mode has been analysed
by means of the Cohesive Zone Model. The
objectivity of the numerical discretization has
been assured using the smeared crack
formulation. The proposed damage model has
been benchmarked by means of an experimental
low-velocity impact test taken from the
Literature, reproducing the main damage
mechanisms, i.e. fibre breakage, fibre kinking,
matrix cracking, matrix crushing and
delaminations
La tosse (o le tossi)
No full textCough is a frequent symptom, ranging from the simple, irritatingly cough associated with the common cold to the catarrhal cough of sinusitis and to the prolonged afebrile non productive cough caused by intracellular pathogens such as Mycoplasma and Chlamydia. Cases of particularly troublesome, recurrent, “untreatable”, nonspecific cough are also commonly seen by paediatricians. Such cases have increasingly been diagnosed as having asthma (cough-variant asthma), but epidemiological and clinical evidence suggests that cough is unlikely to be the only manifestation of asthma. This kind of cough is likely to be related to an increase of cough receptor sensitivity (CRH). The pathways of the reflex for cough and bronchoconstriction are distinctly different. Children with cough receptor hypersensitivity usually start coughing at bedtime and cough is typically unresponsive to treatment, and getting worse with time: in these children an increase of receptor sensitivity is probably due to cough itself. Chronic cough (lasting months and particularly if productive productive) should never be overlooked and requires a thorough diagnostic evaluation including sweat test and high resolution CT scan. Psychogenic cough is typical of school age children, it is stereotyped and stops, as a rule, as the child gets asleep
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
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