1,721,126 research outputs found
New Types of Roll Fin Stabilisers with Increased Maximum Lift
No full textThe paper presents a new configuration for roll fin stabilisers with increased
maximum lift. The work is the results of a research project initiated by
Fincantieri, that brought to the formulation of a patented fin configuration.
A theoretical introduction of devices for lift increase is made, focusing on
the physics of vortex generators for boundary layer control, which are employed
in the new fin configuration.
Experimental results (from model tests in cavitation tunnel) of the new
solution respect to a reference conventional fin are presented and discussed.
Major hydrodynamic advantages of the solution are: maximum lift increase of
more than 10%, hydrodynamic efficiency increase of more than 15%, better
cavitation behaviour and lower cavitation noise.
The obtained hydrodynamic benefits are translated into tangible
engineering advantages by means of an application example of the patented
solution to a couple of fixed anti-roll fins for a patrol vessel. Substantial
advantages in terms of increased stabilisation efficiency and easiness of
installation/repairing are found
La fornace Bianchi in Cogoleto: una fornace ottocentesca in un paese che dall’epoca medievale ha prodotto ed esportato calce
No full textL'articolo tratta dell'intervento di restauro sulla Fornace da calce Bianchi, mettendolo in relazione con tutte le modifiche che si sono susseguite sul territorio di Cogoleto dall'epoca medievale in poi, sembre legate all'estrazione e lavorazione della pietra d acalce
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
The Spatiality of Acosmic Interiority A Phenomenological Attempt to Rethink “Lived Space”
No full textSome models of thought undoubtedly frame the way we think about spatiality. The “inside/outside” binary is one of them. Depending on grammatical use, the two terms are deployed either as an adverb or a preposition, ultimately expressing the localization of something “inside” or “outside.” Aristotle already referred to this localization when he used the terms “containing” and “contained” within the context of his definition of “place,” understood as a contiguous boundary. He expands on this definition in his Physics, in which the issue of place is discussed along with the issue of “movement,” which denotes not only “shift” but also “increase” and “diminution.”1 According to the Stagirite, place refers to the boundary of the containing body, which is in contact with the contained body. The contained body refers to what can be moved by way of locomotion. Since only contiguous and continuous parts can move, the place is the motionless boundary that is contiguous with the movable body. After the so-called spatial turn in contemporary philosophy, does it still make sense to start from Aristotle, especially when “lived space”2 is set forth as a specific kind of spatiality to characterize interiority? In this chapter, I will indeed argue for such a starting point in our attempt to “rethink the lived space.” I will put into question the binary “inside/outside” to rethink interiority as original spatiality, without reference to exteriority. The notion of contiguity described by Aristotle serves as a key concept to demonstrate the foregoing thesis. The concept of the “continuous” does not admit interruptions and, therefore, maintains the inside/outside as uninterrupted. On the contrary, the “contiguous” implies the difference made by the interruption. Contiguous here means “bordering, adjacent,” or “closely connected,” but never “without stopping” or being “uninterrupted” like the continuous. In my view, the concept of interruption is fundamental to rethink interiority. This notion can help us consider the genuine phenomenon of interiority without necessarily referring it to its contrary, namely exteriority. Hence, it can be considered as contiguous but not continuous with exteriority. Moreover, I will not consider “what/was” interiority is. Rather, I will investigate “how/wie” an internal spatiality manifests itself, and I will consequently refer to phenomenology, which (as Husserl or Heidegger taught us) does not deal with what appears but with how it happens. We can now answer the question that opens this introduction: Is the spatial localization “inside/outside” an irreducible reference? Yes, perhaps, but it can be rethought through the tools of philosophical tradition such that these adverbs and the spatiality they outline as exteriority and interiority are grasped not in continuity but in contiguity. Furthermore, if they are contiguous but not continuous, first, one will not be the contrary of the other, and second, each of the two determinations will be grasped starting from its originality and not in the background of a unique conception of space establishing the criteria of both what is exterior and what is interior
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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