BACKGROUND Ovarian cancer is the leading cause of death in women with gynecological malignancies. Brain metastases are considered an uncommon metastatic site. Only few data exist on prognostic factors for this patient collective. PATIENTS AND METHODS A multicenter retrospective chart review was carried out including all patients with histologically confirmed ovarian cancer from six different ...

Collective motion of self-propelled agents has attracted much attention in vast disciplines. However, almost all investigations focus on such agents evolving in the Euclidean space, with rare concern of swarms on non-Euclidean manifolds. Here we present a novel and fundamental framework for agents evolving on a sphere manifold, with which a variety of concrete cooperative-rules of agents can be...

The design of artificial intelligent agents is frequently accomplished by equipping individuals with mechanisms to choose actions that maximise a subjective utility function. This way, the implementation of behavioural errors, that systematically prevent agents from using optimal strategies, often seems baseless. In this paper, we employ an analytical framework to study a population of Proposer...

This paper essays an approach to the emergence of new business models based in collective intelligence through the inclusion of crowdsourcing in business processes. To contextualize this phenomenon, we present a brief sate of art, highlighting some key terms fundamental to understand collective intelligence and its impact in the business environment and on how organizations are changing the way...

The MONEE framework endows collective adaptive robotic systems with the ability to combine environmentand taskdriven selection pressures: it enables distributed online algorithms for learning behaviours that ensure both survival and accomplishment of user-defined tasks. This paper explores the trade-off that must be reached between these two (possibly contradictory) requirements, in the case wh...

This thesis presents an investigation into the use of advanced computer languages for scientific computing, an examination of performance issues that arise from using such languages for such a task, and a step toward achieving portable performance from compilers by attacking these problems in a way that compensates for the complexity of and differences between modern computer architectures. The...

A growing trend within the literature on value creation is the introduction of private-collective knowledge communities, which create opportunities for organizations to leverage knowledge. In these communities, participants privately invest in a project’s success by freely revealing and contributing their personal resources such as expertise and time to a public good. Firms then use these publi...

In this paper we analyze the risk attitude of a group of heterogeneous agents and we develop a theory of comparative collective risk tolerance. In particular, we characterize how shifts in the distribution of individual levels of risk tolerance affect the group’s attitude towards risk. In a model with effi cient risk-sharing and two agents an increase in the level of risk tolerance of one or of...