1,721,013 research outputs found
Tipologie di contratti a termine, sindacato e incertezza economica : evidenza empirica dalle imprese italiane
Full text linkContratti a termine, produttività e costo del lavoro: il ruolo dell’eterogeneità delle imprese
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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
The Determinants of Poverty Transitions in Europe and the Role of Duration Dependence
Full text linkThe paper examines the mobility into and out of poverty and identifies the determinants of poverty spell beginnings and endings in 14 European Countries for the period 1994-2000, using the European Community Household Panel. The first part of the paper offers a snapshot of poverty mobility in Europe calculating the entry and exit poverty rates, along with the conditional, to the duration of spell, exit probabilities and re-entry rates to poverty. In the second part observed characteristics of the household and the household head are examined in order to identify the determinants of the transitions into and out of poverty, taking into account unobserved heterogeneity across individuals and duration dependence. Multivariate discrete hazard analysis is used and the duration dependence is captured with time dummies. In almost all the 14 EU Member-States examined, the probability of exiting (re-entering) poverty is inversely related to the duration of the poverty (non-poverty) spell. The effect is significant to the inclusion of variables capturing observed heterogeneity (socioeconomic characteristics of the household head and the household and particular employment and demographic events), as well as to the inclusion of a random effects factor capturing the unobserved heterogeneity across individuals. With regards to the socio-economic variables, in most countries, households headed by young or elderly individuals, as well as households with dependent children are in higher risk of staying longer in poverty. In many cases, event variables improve the model significantly and highlight the mechanisms that bring individuals into and out of poverty.poverty dynamics, EU
The determinants of poverty transitions in Europe and the role of duration dependence
Full text linkThe paper examines the mobility into and out of poverty and identifies the determinants of poverty spell beginnings and endings in 14 European Countries for the period 1994-2000, using the European Community Household Panel. The first part of the paper offers a snapshot of poverty mobility in Europe calculating the entry and exit poverty rates, along with the conditional, to the duration of spell, exit probabilities and re-entry rates to poverty. In the second part observed characteristics of the household and the household head are examined in order to identify the determinants of the transitions into and out of poverty, taking into account unobserved heterogeneity across individuals and duration dependence. Multivariate discrete hazard analysis is used and the duration dependence is captured with time dummies. In almost all the 14 EU Member-States examined, the probability of exiting (re-entering) poverty is inversely related to the duration of the poverty (non-poverty) spell. The effect is significant to the inclusion of variables capturing observed heterogeneity (socioeconomic characteristics of the household head and the household and particular employment and demographic events), as well as to the inclusion of a random effects factor capturing the unobserved heterogeneity across individuals. With regards to the socio-economic variables, in most countries, households headed by young or elderly individuals, as well as households with dependent children are in higher risk of staying longer in poverty. In many cases, event variables improve the model significantly and highlight the mechanisms that bring individuals into and out of poverty.Poverty dynamics, EU
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