1,721,194 research outputs found
Dall'abaco al cda.(Presentazione del volume: Formare alle professioni. Commercianti e contabili dalle scuole d’abaco ad oggi,a cura di M. Morandi; Milano, Franco Angeli, 2013. Cremona, Camera di Commercio, sala Maffei
No full textpresentazione del volume: Formare alle professioni. Commercianti e contabili dalle scuole d’abaco ad oggi (a cura di M. Morandi; Milano, Franco Angeli, 2013, e illustrazione della collana di Formare alle professioni, di cui costituisce il VI volume
Il trattamento del politraumatizzato con lesioni scheletriche: filosofia di approccio negli USA
No full text
An Approximate Waves-Bordering Algorithm for Adaptive Finite Elements Analysis
No full textIn this paper an Approximate Waves-Bordering algorithm (AWB) is
presented. It computes the Finite Elements linear system solution-update after a
refinement/un-refinement step. This is done taking into consideration only
the equations that corresponds to the nodes whose solution is modified
above a certain tolerance and it shows to be very efficient. The algorithm
considers an increasing set of equations that updates recursively and stops when the norm of the residual has gone under a user-defined threshold
A Recursive algorithm by the moments method to evaluate a class of numerical integrals over an infinite interval
No full textA special recursive algorithm is built by a three-term recursive formula with coefficients evaluated by the moments method. A new functional c(·) is studied over any function space that contains the polynomial space and it is shown that such a functional is positive definite, enabling us to use the advantages of such a property on the zeros of orthogonal polynomials for such a functional. A comparison is presented of the numerical advantages of such a method with respect to the Laguerre polynomials
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
The modified bordering method to evaluate eigenvalues and eigenvectors of normal matrices.
No full textA bordering procedure is here proposed to evaluate the eigensystem of hermitian matrices, and more in general of normal matrices, when the spectral decomposition is known of then–1×n–1 principal minor. The procedure is also applicable to special real and nonsymmetric matrices here named quasi-symmetric. The computational cost to write the characteristic polynomial isO(n 2), using a new set of recursive formulas. A modified Brent algorithm is used to find the roots of the polynomial. The eigenvectors are evaluated in a direct way with a computational cost ofO(n 2) for each one. Some numerical considerations indicate where numerical difficulties may occur. Numerical results are given comparing this method with the Givens-Householder one
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