1,720,999 research outputs found
Contraddizione, paraconsistenza e dialeteismo. Note su F. Berto, L. Bottai, Che cos'è una contraddizione, Roma, Carocci, 2015, pp. 123.
No full textRecensione al volume: F. Berto, L. Bottai, Che cos'è una contraddizione, Roma, Carocci, 2015, pp. 123
Contraddizione, paraconsistenza e dialeteismo. Note su F. Berto, L. Bottai, Che cos'è una contraddizione, Roma, Carocci, 2015, pp. 123.
No full textRecensione al volume: F. Berto, L. Bottai, Che cos'è una contraddizione, Roma, Carocci, 2015, pp. 123
Sensitivity of mechanical masonry characteristics to the textures: FE micro-modelling and homogenization procedures
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
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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Seismic assessment of existing RC structures: non linear analyses of different building typologies
No full textSeismic safety of valuable non-structural elements in RC buildings: Floor Response Spectrum approaches
Full text linkThe seismic performances of non-structural (NS) components belonging to the category of “valuable elements”, i.e. elements characterized by high value in terms of economic, cultural or strategic purposes, represent nowadays a crucial aspect in seismic safety design and assessment of new and existing buildings. Actually, most valuable NS elements are simply-supported objects, which can be classified as acceleration-sensitive NS elements. Frequently, these elements can be considered dynamically uncoupled from the primary structure to which they are connected, thereby justifying the Floor Response Spectrum methods usually adopted in literature and by most of building codes. This paper presents an extensive parametric study of floor response spectra obtained by linear and nonlinear numerical modeling of RC structures. Two sets of 30 horizontal ground motion scaled acceleration records are generated according to the Ultimate Limit State (ULS) and the Damage Limitation State (DLS) spectra adopted for building design. The numerical floor response spectra and those proposed by codes and international standards are critically compared, and the Peak Floor Acceleration (PFA) and the Peak Floor Velocity (PFV) profiles along the building height are discussed. Finally, a simplified method based on the “stability charts” is developed to assess the seismic safety of free standing NS elements located at the upper floors of the host buildings
Corrosion effects on the seismic response of existing rc frames designed according to different building codes
No full textDurability problems significantly affect the structural performance of reinforced concrete (RC) buildings: when exposed to aggressive environmental conditions, both steel reinforcing bars and concrete undergo relevant alterations of their mechanical performance (strength and deformation) leading to a general decrease of the bearing capacity of structural elements and, more in general, of the whole construction. Material deterioration can be responsible for the shift of the collapse mode from ductile/flexural mechanisms to brittle/shear ones in relation to the entity of corrosion attack, the materials used (both concrete strength class and reinforcement grade) and the structural details assumed according to the design. As well known, the Italian building stock is made up of structures realized, for the majority, without following specific seismic design features and to resist – mainly – gravitational vertical load combinations, until the introduction of the actual code after the dramatic earthquake event of L'Aquila 2008. For this reason, the deep knowledge of the structural performance of RC buildings realized neglecting (or simplifying) seismic action in presence of corrosion attack becomes a topic of relevant importance to determine possible solutions and improvement at section, element and whole building level. In the present paper, the effects of corrosion on two case study buildings designed following actual and past Italian codes for constructions (i.e. with and without respecting the capacity design approach) are then presented. The structural assessment in aggressive environmental conditions is performed adopting different entity and distribution scenarios of corrosion, taking into consideration the decrease of strength and deformation capacity of constitutive materials and the resulting loss of confinement affecting RC sections, allowing to determine the attainment of the ductile and brittle mechanisms and the modification of the structural performance
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