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This paper introduces a service-oriented model for the development of Peer-to-Peer (P2P) systems. We first describe the set of abstract primitives supported by the model, and then the semantics for a simple calculus over these primitives that provides a solid ground to develop tools for the analysis and verification of P2P specifications.
desarroOORFXOWXUDO'H DFXHUGRFRQ+XL]LQJDHQ ³+RPR /XGHQV´>@HV HOMXHJRFRQ las relaciones y habilidades que se adquieren durante el proceso de jugar las que nos impulsa en el desarrollo humano. Citando al propio Huizinga: ³(OMXHJRHVHOHMHUFLFLR PiVLPSRUWDQWHTXHHOKRPEUHSXHGHKDFHUGHVXOLEHUWDG´. El juego tiene diversas motivaciones; en las comunidades primitivas se… (More)
This work proposes a framework for the design and development of Ontology Agents oriented to manage Rule Base Fuzzy Cognitive Maps (RB-FCM). The approach takes into account the foundations of the Ontology Agents and the baseline of the Fuzzy Cognitive Maps depicted by Rule Bases. With these underlying elements, a specification of a conceptualization about… (More)
The aim of this work was to elucidate the molecular and biochemical mechanisms that control L-ascorbic acid (AsA) content variation in Myrciaria dubia. The AsA was quantified by high-performance liquid chromatography, gene expression by real-time quantitative PCR, and enzyme activities by spectrophotometric methods from leaves and immature fruits of two… (More)
Choriocarcinoma is a highly malignant neoplasm resulting from the malignant transformation of proliferating trophoblastic cells and the molecular mechanisms leading to this transformation remain to be characterized. We report here the first case of a female germline TP53 mutation carrier who developed, as a first tumour, a lung choriocarcinoma, 6 months… (More)