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Il saggio propone una rivisitazione del concetto di governance al fine di analizzare la sua validitŕ come modello per l'analisi dei sistemi locali di sviluppo. La riflessione inizia evidenziando le continuitŕ che esso dimostra di avere con sistemi pregressi di regolazione locale (modello distrettuale) nei quali i fattori socio-relazionali rappresentavano l'anello forte dello sviluppo e si conclude proponendo di utilizzare il modello di governance per osservare gli impatti socio-economici dei piů recenti programmi integrati territoriali. Tra limiti e opportunitŕ, gli autori convergeranno nell'osservare come l'utilizzo di una prospettiva propria della sociologia economica nello studio della governance locale possa rappresentare un'occasione per continuare a dare un'attenzione specifica alla dimensione meso (istituzioni) e micro (attori) dei processi che entrano nelle dinamiche dello sviluppo locale studiandone il sistema di relazioni e le pratiche di coordinamento.

Contractual and social security work conditions of senior citizens: policies and activation operations - Within the research project Overcoming the barriers and seizing the opportunities for Active Ageing Policies in Europe, the Italian part being carried out by the IRPPS-CNR, there has been an in-depth study of the dynamics regarding population ageing and the social security system in Italy, in the light of the notion of activation - one of the main inspiring criteria of the European Employment Strategy. The paper presents comparative European research work that has highlighted the need to deal with the old age - social security link through an integrated group of diversified policies that consider above all employment policies, life schedules and social protection. The text furthermore presents nine European experiments of gradual retirement. Keywords: Senior citizen workers, Social security, Welfare, Leave. Parole Chiave: Lavoratori Anziani, Previdenza, Welfare, Aspettative.

The aim of this work is to measure the hydrogen transport and solubility parameters in the commercial alumina. Measurements are conducted using a time-dependent permeation method over the temperature range 1273–1673 K with hydrogen driving pressures in the range 104–105 Pa (100–1000 mbar). A half-power pressure dependence (diffusion-limited permeation) of the permeation flux for alumina is observed. The Arrhenius expressions for the hydrogen permeability, diffusivity, and Sieverts' constant values obtained from a fitting to the whole temperature range are as follows: P=3.3·10−10 exp(−97420/RT) mol·m−1·s−1·Pa−1/2 D=9.7·10−8 exp(−79990/RT) m2·s−1 Ks=5.5·10−3 exp(−22540/RT) mol·m−3·Pa−1/2

Seven laboratory experimental casts of 7–9% Cr Ti-bearing martensitic steels were obtained via VIM process. Plates of 25 mm thickness were produced by hot rolling. On each cast CCT diagrams and critical temperatures were determined. Several austenitizing treatments were performed to study the grain size evolution. The effect of microstructure on impact properties were finally investigated. This paper discusses the role of chemical composition on microstructural and physical properties and shows the beneficial effect either of low-temperature austenitizing or double-austenitizing steps on impact properties.

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Irradiation experiments carried out by the Comitato Nazionale Energia Nucleare to evaluate the thermal behavior of different types of fuel are described. The integral thermal conductivity has been ...

The heat transfer coefficient between fuel and cladding has been measured in-pile for different types of Zircaloy-2 sheathed fuels: UO2 and UO2-PuO2 pellets, UO2 Vipac, and UO2-PuO2 Sphere-Pac sol-...