Andrea Marcozzi

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Many peer-to-peer (P2P) applications require that nodes behave altruistically in order to perform tasks collectively. Here we examine a class of simple protocols that aim to self-organise P2P networks into clusters of altruistic nodes that help each other to complete jobs requiring diverse skills. We introduce a variant (called ResourceWorld) of an existing(More)
The aim of this study was to investigate attachment styles in a group of women and men with sexual dysfunction. We recruited 44 subjects (21 women and 23 men) with sexual dysfunction and 41 subjects (21 women and 20 men) with healthy sexual function as the control group. Validated instruments for the evaluation of male and female sexual dysfunctions (M/F(More)
The aim of this study was to measure the prevalence of alexithymia and emotional dysregulation in women with vaginismus not associated with other organic or psychopathological disorders. The study involved the psychometric assessment of 41 patients with vaginismus and 100 healthy women, all of childbearing age. Alexithymia was evaluated by TAS-20 (Toronto(More)
Nodes in a network often store and serve content to other nodes. However, each has a finite capacity and if requests for specific content exceed the capacity of the nodes serving it then queries fail. It is generally not possible for a priori predictions of load demand because at given times some content may suddenly become popular and at others hardly(More)
The increasing knowledge intensity of jobs, typical of a knowledge economy, highlight the role of firms as integrators of know how and skills. As economic activity becomes mainly intellectual and requires the integration of specific and idiosyncratic skills, traditional hierarchical control may result increasingly ineffective. In this work, we explore under(More)
Recent work has proposed how socially inspired mechanisms, based on “tags” and developed within social science simulations, might be applied in peer-to-peer overlay networks to maintain high cooperation between peers even when they act selfishly. The proposed mechanism involves a dynamic re-wiring algorithm called “SLAC”. The algorithm assumes a random(More)
This report comprises the complete D5.3.1 deliverable as specified for workpackage WP5.3 in Subproject SP5 of the DELIS (Dynamically Evolving Large-scale Information Systems) Integrated Project. The essential goal of the DELIS project is to understand, predict, engineer and control large evolving information systems. The main aim of this workpackage is to(More)