Given a set of continuous variables with missing data, we prove in this paper that the iterative application of a simple “least-squares estimation/multivariate normal simulation” procedure produces an efficient parameters estimator. There are two main assumptions behind our proof: (1) the...

In financial time series analysis we encounter several instances of non–negative valued processes (volumes, trades, durations, realized volatility, daily range, and so on) which exhibit clustering and can be modeled as the product of a vector of conditionally autoregressive scale factors and a...

Italian Abstract: Il modo corretto per misurare il rischio di un titolo è attraverso la covarianza con il mercato. Il contributo di una singola azione al rischio di un portafoglio diversificato dipende dalla sua sensibilità alle variazioni del mercato, misurata dal beta del titolo. Il capital...

Italian Abstract: Nel capitolo verranno presentate alcune delle metodologie di analisi statistica impiegate per sintetizzare ed elaborare le informazioni raccolte. L'obiettivo è introdurre il lettore alla scoperta di argomenti e tecniche fondamentali per lo studio quantitativo dei fenomeni,...

Nowadays, in Italy the science sector is doing a strategic restructuring due to budget cuts. Thus, the measure and evaluation of research performance of its units (public research institute) is needed. This research uses the discriminant analysis (direct and Wilks methods) for measuring the...

Nowadays the Government of industrialized countries, in presence of reduced public resources, has to assign clear objectives to public research laboratories to increase the competitiveness of firms. The purpose of this paper is to analyze the public research bodies of the National Research...

Within the current debate about the role of public research in the modern societies and the relations between public and private research, there is an increasing interest towards a possible rivalry between fundamental and applied research. Some preoccupations arise from the fact that the strong...

In current debate, economic development is connected with relative social capital endowment, the diffusion of co-operative practices between firms and the role and efficiency of institutions. In this paper a factor analysis approach is used to provide synthetic indicators of these variables for...