1,720,973 research outputs found
Flood risk: financing for resilience using insurance adaptive schemes.
No full textThis paper shows how insurance markets can be used for mitigating the economic consequences of climate changes, in particular for facing flood risk. Not only providing financial compensation for losses, but also for financing resilience through mitigative infrastructures. This approach is similar to one allowed by the so called resilience bonds, financial instruments whose cash flows depend on the occurrence of contractually settled (catastrophic) events and part of the economic value of the investment is devoted to finance resilience actions. Our propose is based on an adaptive design of the insurance contract, based on information collected at each checking time and the (eventual) surplus of the premium paid respect to the payments occurred for damages has to be (automatically, settled in contractual conditions) used for financing mitigative infrastructures. The cost of these infrastructures, the time to build up, the implied risk reduction, have to be assessed by an engineering expertise and even we need a legal framework into which the actuarial quantitative model can be implemented. The periodic renewals of the contract (surplus evaluation, changing in risk exposure due to the infrastructures already built, ... ), can be interpreted as a sort of smart contracting and in this framework the novelty of blockchain technology could be used to collect new information from various sources
Costo sinistri aggregato e strutture di dipendenza: extreme value theory, modelli simulativi e Fast Fourier Transform
Get PDFLa corretta determinazione della distribuzione di probabilità del costo sinistri aggregato ha un ruolo fondamentale nell’analisi della rischiosità e della solvibilità di una compagnia di assicurazione e la letteratura ha sviluppato, e continua a farlo, diverse modellistiche complesse che consentono di analizzare i rischi assicurativi in modo integrato, individuando eventuali dipendenze tra gli elementi caratterizzanti il profilo di rischio dell’azienda. Alcune delle tecniche concernenti la modellizzazione del costo sinistri aggregato sono proprio l’oggetto principale del presente lavoro di tesi, in cui particolare importanza è data al concetto di funzione Copula ed alla Fast Fourier Transform
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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