Strong convergence of a positive preserving drift-implicit Euler scheme for the fixed delay CIR process

In this paper, we consider a fixed delay Cox-Ingersoll-Ross process (CIR process) on the regime where it does not hit zero, the aim is to determine a positive preserving implicit Euler Scheme. On a time grid with constant stepsize our scheme extends the scheme proposed by Alfonsi in 2005 for the classical CIR model. Furthermore, we consider its piecewise linear interpolation, and, under suitable conditions, we establish the order of strong convergence in the uniform norm, thus extending the results of Dereich et al. in 2011.Comment: 24 page

The environment in the dynamics and interactions between economic growth and openness to international trade

Environmental Economics and Policy, International Relations/Trade,

Revisiting Relations between Stochastic Ageing and Dependence for Exchangeable Lifetimes with an Extension for the IFRA/DFRA Property

We first review an approach that had been developed in the past years to introduce concepts of "bivariate ageing" for exchangeable lifetimes and to analyze mutual relations among stochastic dependence, univariate ageing, and bivariate ageing. A specific feature of such an approach dwells on the concept of semi-copula and in the extension, from copulas to semi-copulas, of properties of stochastic dependence. In this perspective, we aim to discuss some intricate aspects of conceptual character and to provide the readers with pertinent remarks from a Bayesian Statistics standpoint. In particular we will discuss the role of extensions of dependence properties. "Archimedean" models have an important role in the present framework. In the second part of the paper, the definitions of Kendall distribution and of Kendall equivalence classes will be extended to semi-copulas and related properties will be analyzed. On such a basis, we will consider the notion of "Pseudo-Archimedean" models and extend to them the analysis of the relations between the ageing notions of IFRA/DFRA-type and the dependence concepts of PKD/NKD

Job satisfaction in Italy: individual characteristics and social relations

This paper investigates the determinants of job satisfaction in Italy with particular emphasis on social relations. Our econometric analysis is based on four waves (1993, 1995, 1998 and 2000) of the Multipurpose Household Survey conducted annually by the Italian Central Statistics Office. The results of ordered probit regressions and robustness tests show that volunteering and meetings with friends are significantly and positively correlated with job satisfaction, with religious participation playing the biggest role. Our findings also show that meetings with friends increase job satisfaction through self-perceived health.Job satisfaction, social relations, social capital, health, statistical matching, Italy

Estimation of orographically induced wave drag in the stable boundary layer during the CASES-99 experimental campaign

This paper addresses the quantification of gravity wave drag due to small hills in the stable boundary layer. A single column atmospheric model is used to forecast wind and temperature profiles in the boundary layer. Next, these profiles are used to calculate vertical profiles of gravity wave drag. Climatology of wave drag magnitude and ¿wave drag events¿ is presented for the CASES-99 experimental campaign. It is found that gravity wave drag events occur for several relatively calm nights, and that the wave drag is then of equivalent magnitude as the turbulent drag. We also illustrate that wave drag events modify the wind speed sufficiently to substantially change the surface sensible heat flu

Job satisfaction in Italy: individual characteristics and social relations

This paper investigates the determinants of job satisfaction in Italy with particular emphasis on social relations. Our econometric analysis is based on four waves (1993, 1995, 1998 and 2000) of the Multipurpose Household Survey conducted annually by the Italian Central Statistics Office. The results of ordered probit regressions and robustness tests show that volunteering and meetings with friends are significantly and positively correlated with job satisfaction, with religious participation playing the biggest role. Our findings also show that meetings with friends increase job satisfaction through self-perceived health.Job satisfaction; Social relations; Social capital; Health; Statistical matching; Italy.

Changing the University System Management: a study of the Italian scenario

Over recent years, the Italian University System has been handling a phase of deep changes, which have had significant impact on its mission and on the way it operates. The most important of these changes have been to the organisation of universities, their recruitment procedures and in terms of improvements to the quality and efficiency of the university system itself. In this perspective, the objective of this research was to carry out a critical analysis of the process of change, with special reference to improving efficiency by making the transition from cash-based accounting to accrual accounting. In order to achieve this objective, the starting point was the legislation of reference that sets out the terms for the move to financial accrual accounting. A comparative analysis was then carried out at an international level, with the purpose of highlighting the strengths and weaknesses identified during the implementation of these new procedures within the public field. This was followed by an analysis of the details of the theory defining the accounting principles to be used in the process of preparing university’s financial statements. Finally, the study identified the main critical points relating to implementation of the new accounting system, offering, at the same time, several thoughts concerning possible subsequent analyses on this topic

Interpersonal Relationships on and outside of the Job and Satisfaction with Working Conditions in Europe

The aim of this paper is to analyse, using a standard probit model, the correlates of satisfaction with working conditions in Europe. The main assumption of the paper is that employees’ satisfaction with working conditions depends not only on standard variables that explain satisfaction but also on employees’ interpersonal relationships on and outside of the job. The econometric analysis employs data from the Sixth European Working Conditions Survey carried on in 2015 and released in 2017.Findings show that interpersonal relations count at various level for satisfaction with a positive association between relationships on and outside of the job and satisfaction with working conditions

Is there an association between working conditions and health? An analysis of the Sixth European Working Conditions Survey data

This paper analyses the association between working conditions and physical health using data from the Sixth European Working Conditions Survey (EWCS6) released in 2017. The econometric analysis uses two indicators to describe health status: self-assessed health (SAH), which is a subjective indicator of health; and an objective indicator of health (SICK), which is based on the occurrence of any illness or health problem that has lasted or is expected to last for more than 6 months. The theoretical hypotheses concerning the association between working conditions and SAH and the association between working conditions and SICK are tested using a standard ordered probit model and a standard probit model, respectively. The results show that encouraging working conditions, work environment, and job support are associated with both better self-assessed health and better objective health