Articles by Author: Roberto Mavilia

Search results for Roberto Mavilia

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  1. Innovation policies in the Mediterranean area: Towards a Mediterranean system of innovation

    Innovation policies in the Mediterranean area: Towards a Mediterranean system of innovation

    The contribution of this paper has both theoretical and policy relevance. It is one of the first exploratory studies of the Mediterranean system of innovation built on the concept of innovation systems. The paper provides a brief literature review and...
  2. Inventive activity and knowledge flows in the Mediterranean area: A social network analysis based investigation approach

    Inventive activity and knowledge flows in the Mediterranean area: A social network analysis based investigation approach

    This paper investigates the collaboration of inventive activities at firm level in the Mediterranean area by investigating, through social network analysis, the collaboration between the two shores of Mediterranean area. Using patent data, our aim is to capture some relevant...
  3. On the Maximal Function for the Generalized Ornstein-uhlenbeck Semigroup.

    On the Maximal Function for the Generalized Ornstein-uhlenbeck Semigroup.

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In this note we consider the maximal function for the generalized Ornstein-Uhlenbeck semigroup in R associated with the generalized Hermite polynomials {H μ n } and prove that it is weak type (1,1) with respect to dλ...
  4. Occurrence and ecological aspects of the two-fingered skink <em>Chalcides mauritanicus</em> in the Chafarinas Islands in North Africa

    Occurrence and ecological aspects of the two-fingered skink <em>Chalcides mauritanicus</em> in the Chafarinas Islands in North Africa

    Item type: Journal Article • Journal: African Journal of Herpetology
    The two-fingered skink, Chalcides mauritanicus, is a fossorial species from North Africa, where it has only been found at a few localities on sandy sea shores. Virtually nothing is known about its ecology. For the first time, we report the...
  5. Portfolio performance under reference-day risk

    Portfolio performance under reference-day risk

    Item type: Journal Article • Journal: Investment Analysts Journal
    Reference-day risk has been previously identified as a type of sampling variation phenomenon, and its effect on the estimation of stock returns and their volatility and market betas has been documented. Using a dataset of daily equity mutual fund returns,...