The development of a reliable procedure for the aggregation of individual level happiness leads to a proper understanding of group level happiness. Such a procedure is indispensable for a more responsive public policy-making. However, individual self-reports on happiness must meet the dual...

This study uses a sample of 71 countries and nonparametric quantile and partial regressions to model a number of threatened species (reptiles, mammals, fish, birds, trees, plants) in relation to various economic and environmental variables (GDPc, CO¬2 emissions, agricultural production, energy...

The price-demand relationship in the electricity market is a complicated phenomenon. In order to thoroughly investigate the peculiarities of this relationship, a multi-scale correlation analysis of electricity price and demand is carried out in this research. Using a modified method of socalled...

This paper deals with the evaluation of poverty sensitivity to growth and distributional changes in Italy, across its regions and over a three-decade period, spanning from 1977 to 2004. We use the “Survey on Household Income and Wealth” (SHIW) of the Bank of Italy to firstly construct growth...

In this paper we propose an innovative approach based on life satisfaction to estimate efficiency measures for individuals considering how they convert their resources into higher levels of happiness. We use an extension of the conditional nonparametric robust approach which allows us to...

The analysis of social indicators and the analysis of life quality are very important in order to know, in time, the changes of the main social and economic phenomena that characterize a society. To monitor the social system is a priority of modern societies because it helps to identify in time...

International statistics regarding the main index registered on the insurance market and in the structure reveals the activity level of insurance on the profile markets and their absorption capacity. Taking into account these results and international comparisons, in Romania, in 2006, which...

In this paper, we obtain bounds for the population coefficient of variation (CV) in Bernoulli, Discrete Uniform, Normal and Exponential distributions. We also show that the sample coefficient of variation (cv) is not an accurate estimator of the population CV in the above indicated...

Generalized autoregressive heteroskedasticity (GARCH) models are widely used to reproduce stylized facts of financial time series and today play an essential role in risk management and volatility forecasting. But despite extensive research, problems are still encountered during parameter...

Starting from inhomogeneous time scaling and linear decorrelation between successive price returns, Baldovin and Stella recently devised a model describing the time evolution of a financial index. We first make it fully explicit by using Student distributions instead of power law-truncated Levy...