1,721,013 research outputs found
El derecho de autodetermination del enfermo en fase terminal en el ordenamiento italiano: presuposiciones, realizaciones y limites a su ejercicio
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Weight Optimisation of Damage Resistant Composite Panels with a Posteriori Cost Evaluation
No full textIn the present paper, we attempt a novel optimisation strategy for damage resistant composite stiffened panels based on genetic algorithms and oriented towards the satisfaction of minimum weight criteria. In order to accomplish this task, first, minimum weight solutions for panel configurations with T and I stringers, satisfying the buckling resistance constraint are examined. Some minimum weight solutions are imposed to be buckling resistant only, that is, capable to sustain a given minimum admissible buckling load, while other solutions are imposed to be buckling and damage resistant, in other words, capable to sustain a given admissible buckling load being at the same time able to resist to a given impact energy without developing significant damage. Then a-posteriori evaluation of costs is performed for the best minimum weight solutions. Such an evaluation takes, at the same time, into account the manufacturing costs, which depend on the selected manufacturing process and on the geometrical configuration, and the maintenance costs which are related to impact events and consequent repairing actions. Finally, the influence of the impact damage and buckling resistance constraints on the stiffened composite panel's costs is critically discussed providing useful considerations oriented to a cost effective composites design
Cost and Performance Optimisation of Composite Stiffened Panels
No full textIn the present paper, we attempt a novel optimization strategy of composite stiffened panels.
The method is based on genetic algorithms and is oriented towards the satisfaction of minimum cost criteria.
In order to accomplish this task, minimum weight solutions satisfying additional (constraint) requirements are identified: some minimum weight solutions are asked to be buckling resistant only, that is, capable to sustain a given minimum admissible buckling load, while other solutions are asked to be buckling and damage resistant, that is, capable to sustain a given maximum impact load.
The evaluation of costs takes into account manufacturing and maintenance costs: the former are attached to the geometrical configuration of the parts, besides the type of process selected to produce them: on the contrary, the latter are related to the repairing actions to sustain.
It is shown that buckling and damage resistant panels, though being around 20% weightier than the buckling resistant ones, are around 30% less expensive
Migration and Asylum Policy in Italy
No full textThe chapter "Migration and Asylum Policy in Italy" deals with migration policies in Italy in recent years, highlighting the main aspects that have shaped the approach to migration flows. The chapter is part of a wider work done as part of the "Guide on conceptual and methodological issues" that is an important instrument useful to share theoretical vision and methodological approach for the action-research within the Global-ANSWER European Project
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
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