1,720,969 research outputs found
Migrazioni ambientali e vulnerabilità: una narrazione alternativa.
No full textIl lavoro è strutturato come segue: Il primo paragrafo è introduttivo. Nel secondo paragrafo si mettono in evidenza le difficoltà di individuare la nozione di migrante (rifugiato) ambientale; nel terzo paragrafo, si presenta una breve disamina delle teorie sulla mobilità post-disastro; nel quarto si affronta più direttamente il tema oggetto di analisi, ossia il fenomeno migratorio associato ai cambiamenti climatico-ambientali nell’ambito del concetto di vulnerabilità, con un accenno anche al tema della sicurezza alimentare. Nelle conclusioni, infine, si prospetta la necessità di pervenire all’elaborazione di politiche globali volte, quando è necessario, ad incentivare la mobilità ambientale e in altri casi a disciplinare, anche con azioni preventive, tale mobilità
The Contribution of the Tax and Transfers System to Poverty in Italy
No full textThis paper examines how the Italian tax and transfer system affected income poverty from 2006 to 2018. By using cross-sectional survey data from the Italian EU-SILC (European Union Statistics on Income and Living Conditions) and developing some ad hoc synthetic indices, the research is methodologically based on comparing the actual and a hypothetical situation. In the former, identified as “full government involvement,” the tax and transfer system affects the amount of equivalized disposable income; in contrast, in the latter, identified as “limited government involvement,” the equivalized disposable income corresponds to market income. Evidence was found of the ineffectiveness of the tax and transfer system. The negative impact, as compared to the non-involvement situation, is quantified as follows: for every person who benefitted from it and became non-poor, at least one or more people were negatively affected and became poor. As a result, the overall population of the poor in the actual situation has always been larger than that in the hypothetical scenario; nevertheless, despite the fiscal consolidation implemented by the Italian government, this distortion has gradually narrowed over time. Finally, according to the poverty indicators from the Foster, Greer, and Thorbecke class, the tax and transfer system also modified the income distribution of poor persons by raising the average and lowering the variance of their disposable income. This beneficial impact has become stronger in recent years
Does air pollution influence internal migration? An empirical investigation on Italian provinces
Get PDFThis research analyzes the role that air pollution plays, controlling for other socio-economic factors, in the movement of the population among Italian provinces. In spite of the increased prominence of environmental degradation in the public policy debate, empirical evidence on the effects of air quality on the attraction or retention of people is still limited in Italy. This study aims at partly filling this gap. Specific attention is paid to the environmental risks presented in provinces contaminated by air pollution. We investigate whether popula- tion moves away from provinces with higher levels of air pollution emissions toward those characterized by lower levels, net of the other contextual factors associated with migration streams. While many factors can come into play on mobility decisions, it is suggested that the increased concerns with environmental risks may be influential in shaping internal migration choices. We discuss the implications of our findings for future policy options
Microsurgery for groin lymphocele and lymphedema after oncologic surgery
No full textGroin lymphocele (GL) is a frequent complication of inguinal lymph node dissection, and conservative treatment is not always successful. Different surgical methods have been used to treat lymphoceles arising from lymphatics injured during groin surgery. However, they all involve the closure of lymphatics merging at the lymphocele, increasing the risk of postoperative lower limb lymphedema or of worsening lymphedema if already clinically evident. We assessed the efficacy of a diagnostic and therapeutic protocol to manage inguinal lymphoceles using lymphoscintigraphy (LS) and microsurgical procedures. Sixteen GL [seven associated with leg lymphedema (LL)] were studied by LS preoperatively and treated by complete excision of lymphocele and microsurgical lymphatic-venous anastomoses between afferent lymphatics and a collateral branch of great saphenous vein. Lower limb lymphatics were identified intraoperatively using Patent Blue dye injection. Nine patients without lymphedema had complete healing of lymphocele and no appearance of lower limb postoperative lymphedema. The other seven patients with associated secondary lymphedema had complete disappearance of lymphocele and a remarkable reduction of leg volume. Four of them completely recovered without the need of any compression garment, after the first year postoperative. Inguinal lymphocele nonresponsive to conservative treatment can be advantageously studied by LS and successfully treated by microsurgical reconstructive procedures, above all if associated to LL
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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