Endomorphisms of Koszul complexes: formality and application to deformation theory

We study the differential graded Lie algebra of endomorphisms of the Koszul resolution of a regular sequence on a unitary commutative K-algebra R and we prove that it is homotopy abelian over K but not over R (except trivial cases). We apply this result to prove an annihilation theorem for obstructions of (derived) deformations of locally complete intersection ideal sheaves on projective schemes

The real issue is flying, not death. Dealing with risk in the subculture of Italian gliding

This thesis aims to rethink subcultural theory by applying it to an unusual age bracket. It proposes to chart forms of reflexivity in risk perception among the practitioners of a dangerous sport, and adopts as its empirical point of departure the subculture of middle class, middle-aged glider pilots in the Italian village of Bilonia. Exploring the world of gliding, it describes ethnographically the local situations in two gliding clubs, Bilonia, where the main fieldwork took place, and Piti, where a second shorter period of participant-observation was conducted. Adopting a comparative perspective, these local realities are contrasted amongst themselves and with the wider subculture of gliding in Italy. The thesis argues that, despite the prevalence of a single dominant subculture, gliding is practised in different ways in different places, especially with regard to risk perception and management. However, these are affected in all locations by the peculiar characteristic of the subculture, the average age of the glider pilots, which rules out the extreme behaviours of younger practitioners and goes against the tenets of some explanations of voluntary risk taking. In the first three chapters a theoretical framework is developed based upon advances in sports anthropology, subcultural theory and social scientific theories of risk. In the empirical chapters that follow, gliding is variously introduced as an experience involving a precise script, as a local reality tinged with peculiarities that set it apart from the wider reality of the sport in the national arena. The last three chapters discuss key points of the theoretical approach adopted and the findings they led to, in particular the implications for the study of sport subcultures. The empirical data presented suggest the existence of a middle-aged sport subculture, something that has not often been encountered in the literature on the subject. It is shown how risk perception follows a precise pattern which is shaped by the cultural norm of the gliding subculture – in its turn affected by the average age of the members

The Encephalomyocarditis Virus

The encephalomyocarditis virus (EMCV) is a small non-enveloped single-strand RNA virus, the causative agent of not only myocarditis and encephalitis, but also neurological diseases, reproductive disorders and diabetes in many mammalian species. EMCV pathogenesis appears to be viral strain- and host-specific, and a better understanding of EMCV virulence factors is increasingly required. Indeed, EMCV is often used as a model for diabetes and viral myocarditis, and is also widely used in immunology as a double-stranded RNA stimulus in the study of Toll-like as well as cytosolic receptors. However, EMCV virulence and properties have often been neglected. Moreover, EMCV is able to infect humans albeit with a low morbidity. Progress on xenografts, such as pig heart transplantation in humans, has raised safety concerns that need to be explored. In this review we will highlight the biology of EMCV and all known and potential virulence factors

Caratteri dell'amministrazione delle signorie rurali in Italia (XIII-XV secolo)

In order to facilitate a comparison with the Iberian reality, this article deals with a general issue: the forms of administration of lordships in Italy. This is a huge subject that has been mostly ignored by Italian historiography and hence an overall perspecive is lacking. A preliminar overview is here provided together with a possible method of analysis, in the belief that synthetic approaches and methodological frameworks are the most useful contributions to comparative studies