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The purpose of this paper is to discuss methodological guidelines and operation protocols for the assessment of historic buildings by radar techniques, as decision-making support within integrated investigation programs, where documentary records, direct survey and onsite measurements address accurate and effective diagnosis.

Radar methodologies and procedures are planned to support the pre-diagnosis hypotheses, based on preliminary information from historical sources, as well as from direct survey of geometry, materials, construction techniques and decay patterns. Thus, they are applied, in terms of acquisition and elaboration systems, taking into account the testing targets and surrounding conditions. Finally, they are correlated with complementary destructive and non-destructive techniques for data interpretation and validation.

The general approach is developed for some representative case studies, in order to point out the potentialities of radar techniques for traditional building components. In detail, masonry walls and vaults, as well as iron and reinforced concrete slabs are assessed, in terms of construction materials and techniques, morphology and stratigraphy of multi-layered components, inner voids and inclusions, previous reinforcement works.

The above-mentioned issues are particularly relevant in the assessment of historic buildings, where onsite non-destructive technologies are commonly applied, because they help identify the actual characteristics, residual performances and state of conservation, without interfering with structural stability and functional operability, and, thus, address low-intrusive and compatible interventions. Nevertheless, emerging technologies, such as radar scanning, still require guidelines and protocols, in order to achieve reliable and meaningful results and save time and resources, especially whenever technical data are limited, investigation conditions are challenging and different construction solutions are involved.

This paper aims to examine empirically the impact of gender diversity on corporate performance by both comparing different positions occupied by female directors on the boards and their personal-specific characteristics.

The paper examines a sample of Italian listed companies during 2006–2015. To deal with endogeneity issues, the authors use a generalized method of moments as an empirical methodology.

The empirical findings show that the positive effect of both independent and executive women directors on firm performance is moderated by the specific characteristics of female directors. Specifically, the analyses show that foreign and busy females negatively impact on performance. Conversely, graduate female directors strengthen the positive link between executive women and firm performance.

The paper sheds light on the consequences of appointing different types of female directors (i.e. independent, executive, graduate, foreign and busy) on firm performance. Our empirical research that investigates the association between gender diversity and performance in the Italian context based on a longitudinal study, which involves a period of ten years, allowing consideration both of the years before and after the introduction of the gender quota law (Golfo–Mosca law).