1,720,954 research outputs found
Rapid prototyping: un metodo di ottimizzazione del posizionamento del prototipo sulla tavola di lavoro mediante tecniche di analisi dell’immagine
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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
Upper Leg impactor modelling for Pedestrian Test simulation using F.E.M. explicit codes
No full textBetween 1977 and 1980, mainly in the United States and in Australia, independent research centres began to process several statistical data on accidents between vehicles and pedestrians, taking cam, obviously, to pedestrians' injury. That problem in the early 80' became also interesting for European research centres.
In 1990 a research group of EEVC (European Enhanced Vehicle Safety Committee) had examined statistical data of past twenty years and scientific research published about this topic, and had presented several documents about "pedestrian test" procedures.
In reference papers of this twenty years period (1977-97) and in documents of EEVC, the scientists describe a proposed test for upper-leg impact; it is represented by the impact of a standardised impactor (that simulate the human leg/pelvis) on car front-part; those documents have been updated in 1994, 1998 and finally in 2002 while Euro-NCAP, since 1998 had used them to realize, in specialized laboratories, tests for giving a rate for car-safety judgement EEVC wants to introduce those tests for the new homologation program since 2010. For that test there's not a "lighter" version provided by ACEA Protocol, so it will works not before 2010 but EuroNCAP rating on pedestrian safety is still working and takes into account the Upper-Leg test too.
The most Important Automotive industries had understood the impact of those new regulations about homologation and began to study the problem and particularly how to introduce those new Homologation parameters in their Product development cycles, today based on Virtual Prototyping of the Whole Vehicle and final Physical testing of few physical prototypes.
The impactor was created in order to evaluate the in several parts of the Upper-leg using two parameters:
- Sum of Forces coming from two transducers positioned in the upper and lower part of the impactor, in order to evaluate the injury on the upper (neck) and lower parts of femur bone;
- Maximum. bending moment applied on the central part of the element that simulates the femur bone.
Those two parameters are useful to evaluate what happens when a pedestrian, that cross a road orthogonally to the vehicle way, is rammed by a car, and hits the Bonnet leading edge with the Upper part of the Leg injuring femur and pelvis zone.
Impactor used to evaluate the damage in pedestrian test is made by TRL and is quite similar to the structure of the Human femur: it has a very complicated system to simulate the whole bone-flesh-skin apparatus and, in particular, has two layers of special ConforTM Foam CF-45 Blue that has the same mechanical behaviour of human flesh, in an other scientific paper we have published the results on the dynamic characterization of that Foam at medium and high impact velocity; in this paper we have simulated the whole Upper-leg Impactor, in PamCrash environment, using the ESI formulation of the Skin and using the results of characterization of all other elements with experimental tests.
After this work of modelling we have tested the Impactor by the simulation of the Certification Tests, as described in the EEVC and EuroNCAP norms, in order to obtain the same results of the experimental test.
The Numenc/Experimental correlation is very good and we've numerically certified our impactor.
We've also made several tests, whose Experimental results are published, at higher speed and we have obtained some correlation problems because of the critical behaviour of the flesh at high speed simulation but the results on different cases show the same output behaviour, giving us an instrument to resolve that problem
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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