Theories of economic growth at the regional and national level, have expanded the traditional production function of the Solow model towards a wide function that collects conditioning factors of labour productivity, measured by R & D expenditure, the number of patents, the human capital, the...

The research on happiness has raised the need to take into account other factors than income if the objectives are to maximize social welfare and to improve the quality of life. Our work has two aims. First, we study the link between happiness and other related concepts as utility and quality of...