1,720,988 research outputs found
Market based tools for managing the life insurance company
No full textIn this paper we present an approach to market based valuation of life insurance policies, in the spirit of the NUMAT proposed by Hans Buhlmann (2002) in an editorial in the ASTIN Bulletin. We have experienced the valuation method for more than one decade, both as a pricing procedure applied to policy portfolios of leading insurance companies, and by including the valuation principles into several actuarial teaching activities. Our interest is mainly focused here on participating policies that in Italy are characterized by contractually binding profit sharing rules. The problem of the fair valuation of the liabilities generated to the insurer by these contracts can be conveniently addressed using the methods of contingent claims pricing. These allow to price correctly the options embedded into the policies and to implement consistent plans of asset-liability management. The approach also provides a market based measurement of the value of business in force for outstanding policy portfolios and consistent assessments of the financial risk based capitals
Sviluppare il mercato delle rendite vitalizie
No full textViene affrontato il problema di definire i principi e i modi per il calcolo del "prezzo equo''
delle rendite vitalizie rivalutabili, con garanzia di minimo rendimento, ponendosi nella situazione informativa
dell'acquirente. Il problema di pricing non può essere risolto con le tecniche attuariali tradizionali, poiché il processo
di rivalutazione della rendita dipende dalla
strategia di gestione del fondo di riferimento, e la valutazione - per essere coerente - deve utilizzare un modello
stocastico di mercato. Nel lavoro sono proposte "convenzioni'' da applicare al modello stocastico di pricing, che consentano di calcolare
in modo adeguato il Money's Worth Ratio, ormai utilizzato a livello internazionale come indice di
"confronto della qualità'' tra rendit
Manuale di finanza - II. Teoria del portafoglio e del mercato azionario
No full textQuesto secondo volume è diviso in tre parti e corredato da appendici. La prima parte introduce i principi generali per le decisioni finanziarie in condizioni di incertezza e in particolare nei mercati azionari; definisce il quadro metodologico di riferimento per le argomentazioni successive. La seconda parte illustra l'approccio media-varianza alla selezione dei portafogli azionari, nello schema tradizionale del mercato uniperiodale, con attenzione ad aspetti rilevanti per l'utilizzazione pratica dei risultati (effetti della correlazione, misura del "rischio marginale" nell'ottica del risk-budgeting, individuazione dei portafogli di frontiera con tecniche di ricampionamento). Il Capital Asset Pricing Model è sviluppato nella terza parte, considerando i significati economici e la struttura statistica del modello, e avviando la prospettiva della sua utilizzazione nell "fair valuation"
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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