1,721,027 research outputs found
Understanding the gender wage gap differential between public and private sector in Italy : a quantile approach for panel data
Full text linkThis paper analyzes the gender wage gaps across the wage distribution in both the private and public sectors in Italy for the years 2005-2010. We use quantile regression methods to estimate and decompose the gender wage gap at different points of the wage distribution. We find in both sectors a consistent level of gender wage gap (lower in the public sector) and an increasing path along the wage distribution. Counterfactual decomposition analysis supports the idea of a sticky floor mechanism in action in the private sector and of a glass ceiling in the public sector. In addition to standard decomposition techniques we propose a two step procedure that relies on a novel approach to estimating fixed effects quantile regressions. Its main advantage is that it allows the estimation of the marginal effect of the employment sector on wages at different points of the distribution, while accounting for both observable and time-invariant unobservable factors. When we control for employees’ observed and unobservable individual characteristics, the main finding is that the gender wage gap substantially decreases in both sectors. A second evidence is that the sticky floor effect in the private sector vanishes, while the glass ceiling effect in the public sector remains. The evidence from the longitudinal analysis amplifies the differences of the wage-setting mechanisms in the two sectors
"And Yet They Co-Move! Public Capital and Productivity in the OECD: a Panel Cointegration analysis with Cross-Section Dependence"
No full textIn this paper we add to the debate on the public capital - productivity link by exploiting very recent
developments in the panel time series literature that take into account cross sectional correlation in
non-stationary panels. In particular we evaluate the productive effect of public capital by estimating
various production functions for a panel of 21 OECD countries over the period 1975-2002. We
find strong evidence of common factors that drive the cointegration relationship among variables;
moreover, our results suggest a public capital elasticity of GDP in the range 0.05-0.15, depending on
model specification. Results are robust to the evidence of spillovers from public capital investments
in other countries and to controlling for other productivity determinants like human capital, the stock
of patents and R&D capital.
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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
Prognostic factors in the sick neonatal foal
No full textIn the foal, the most common neonatal diseases are responsible for an high nonsurvival rate. Since intensive care for neonatal foals is usually very expensive an early prognosis for survival at admission or during hospitalization is recommended, as well as a prognosis for future athletic potential. Therefore, prognostic factors for prematurity, septicaemia, other infectious diseases and hospitalized foals are revised and discussed on the base of literature and authors experiences. The advantages and limitations of retrospective and perspective prognostic factors is also presented, and the possible role of new expected factors deducted by the recent advances in the knowledge of main neonatal foal diseases pathogenesis proposed
Design of a Sound Quality Assessment Method for Automotive Interiors: Development of a Jury Test and Adaptation of the Metrics PR, STI to Automotive Sounds
No full textInnesti ossei neovascolarizzati. Studio sperimentale preliminare.
No full textGli innesti ossei vascolarizzati sono oggi procedure standardizzate in chirurgia ricostruttiva ma presentano alcuni svantaggi: la morbidità del sito donatore, il numero limitato di zone donatrici "naturali", la tecnica complessa. La neo-angiogenesi è un fenomeno di comune osservazione nei processi riparativi e proliferativi dei tessuti. Nel presente studio abbiamo voluto testare la possibilità di creare un innesto osseo "neo-vascolarizzato" utilizzando una procedura di impianto vascolare nel tessuto osseo del coniglio. Lo studio è stato condotto su 16 conigli New Zealand adulti. Il prelievo di due frammenti ossei di dimensioni mm 10x7x7 è stato effettuato a livello delle ali iliache di ogni animale. L'impianto del peduncolo vascolare femorale superficiale è stato effettuato in uno dei due frammenti. Il frammento sottoposto ad impianto vascolare è stato avvolto in un involucro di silicone e posizionato in una tasca sottocutanea a livello della coscia destra. Sul lato sinistro il secondo frammento è stato invece avvolto nel foglietto di silicone e posizionato in sede sottocutanea senza eseguire impianto vascolare. Abbiamo suddiviso gli animali in due gruppi di 8 unità ciascuno: nel gruppo I l'espianto è avvenuto dopo 4 settimane, nel gruppo II a otto settimane. Lo studio è stato condotto mediante iniezione di tetraciclina 72h prima dell'espianto per valutare la deposizione di nuovo tessuto osseo. Per studiare la neo-vascolarizzazione, in alcuni frammenti di ciascun gruppo è stata effettuata iniezione di inchiostro colloidale (mediante cateterizzazione dell'arteria centrale) prima della inclusione in PMMA. Lo studio istologico ha dimostrato nei frammenti a 8 settimane, la formazione di una ricca rete di vasi neoformati con cellule ossee paragonabili a quelle del tessuto normale. Anche la marcatura con tetraciclina ha evidenziato un migliore trofismo osseo a 8 settimane con deposizione ossea di aspetto normale. I frammenti non vascolarizzati hanno dimostrato assenza di segni diretti ed indiretti di "vitalità" cellulare e tessutale dell'osso. La procedura di impianto vascolare si è dimostrata in grado di indurre neo-vascolarizzazione e neo-deposizione ossea in un piccolo frammento osseo. Questo modello è semplice, ripetibile ed interessante da un punto di vista biologico e riteniamo che possa avere utili ripercussioni in campo clinico ortopedico
Un approccio multidisciplinare per documentare e visualizzare un sito archeologico: la villa d’otium di Massaciuccoli (Massarosa, LU)
Full text linkThe research project VisualVersilia 3D aims at offering a new method to record andvisualize the territory and its heritage by matching the traditional reading of documents and the potential use of modern communication technologies. The purpose of the project is to define a methodology that can be applied to material culture, as well as to other types of contents and contexts, to enhance the characteristic features of the territory and its heritage. The innovation of the project consists in the development of a procedure for documenting current and past historical times and integrating their 3D visualizations with rendering, capable of returning an immersive virtual reality for a successful enhancement of the heritage. The research implements the methodology in the archaeological complex of Massaciuccoli (Massarosa, LU), one of the best preserved Roman site of the Versilia area (Tuscany, Italy). The activities briefly consist in: 1) analysis of all types of available sources; 2) metric three-dimensional survey by laser scanning technology addressed to the structures and buildings of the complex; 3) laser scanning data processing; 4) realization of virtual 3D rendering related to Roman and current condition for documentation and conservation purposes; 5) creation of virtual tour of the site in its current form, on the basis of spherical images then enhanced by texts, and 3D models of the Roman age
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
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