1,720,984 research outputs found
Occorrono troppe vite per farne una. La concezione di tempo e incertezza in Sergio Steve
No full textFor Sergio Steve, the economist in the relationship with his subject had to
give up the claim to formulas that could open worlds with the key of value
judgments, which belonged to the doctrinaire and not to people’s aspira
tions.
This methodological vision finds a specific application in the discus
sion
of the role of time and uncertainty in individual and collective economic
choices. In the scientific production of Steve this subject will be recurring
and will be central in his conception of economics and public finance.
In an article published in 1941, Steve performs a thorough analysis of the
effects that taxation of extraprofits may have in the long run on accumulation
and production choices under uncertainty.
In a further article, in 1947, he recognizes the role of uncertainty as the
main obstacle to the definition of a general tax. In the Svimez lectures on
Teoria della politica economica, Steve anticipates the recent behavioural
economics literature, by illustrating cases in which the dynamic incon
sistency
of individual choices yields violations of economic rationality.
However, recognizing the variability and uncertainty of human behav
iour,
together with their consequences for economic theory, did not have to
“lead to the loss of confidence in reason”, but rather to the construction of
a critical reason aimed at understanding individual and social behaviours
as a premise to public intervention
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
Accurate and efficient modeling of the hysteretic behavior of sliding bearings
Full text linkThis paper presents a uniaxial phenomenological model for the simulation of the hysteretic behavior typically exhibited by sliding bearings deforming along one of their transverse directions under the effect of an axial compressive load. The proposed hysteretic model is able to take into account the dependency of the device restoring force on the velocity of sliding, on the bearing pressure, and on the condition of the sliding interface. Furthermore, it allows for a considerable reduction of the computational effort of nonlinear dynamic analyses since the model hysteretic variable is evaluated by solving an algebraic equation. The numerical accuracy and computational efficiency of the proposed model are assessed by means of numerical simulations
- …
