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Search Results: 1 - 10 of 118 matches for " Benet "
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Saber e sentir: uma etnografia da aprendizagem da biomedicina
Benet, Octavio;
Physis: Revista de Saúde Coletiva , 1999, DOI: 10.1590/S0103-73311999000100006
Abstract: biomedicine, originally society's view of the world, changed progressively between the 16th and the 17th centuries. these changes gave rise to a mechanistic view of the world and opened up the possibility of a dualistic view of man. from this view, which biomedicine is based on, largue that biomedical practice is structured around a structural tension, that is to say, a tension between the realm of knowledge (associated with reason and science) and the realm of feeling (associated with emotions and psychological). with the aim of examining how this structural tension is carried out in the biomedicine learning process, i carried out a field study in the wing of a medical clinic at a public hospital. the study was cantered upon the interns, who, in their learning process, combine how medical practice is lived with the quest for academic excellence.
IPFS - Content Addressed, Versioned, P2P File System
Juan Benet
Computer Science , 2014,
Abstract: The InterPlanetary File System (IPFS) is a peer-to-peer distributed file system that seeks to connect all computing devices with the same system of files. In some ways, IPFS is similar to the Web, but IPFS could be seen as a single BitTorrent swarm, exchanging objects within one Git repository. In other words, IPFS provides a high throughput content-addressed block storage model, with content-addressed hyper links. This forms a generalized Merkle DAG, a data structure upon which one can build versioned file systems, blockchains, and even a Permanent Web. IPFS combines a distributed hashtable, an incentivized block exchange, and a self-certifying namespace. IPFS has no single point of failure, and nodes do not need to trust each other.
Structure in narrow planetary rings: Open questions and recent results
Benet, Luis;Merlo, Olivier;
Revista mexicana de ciencias geológicas , 2010,
Abstract: in this paper we review some open questions in the context of the structure observed in narrow planetary rings, and summarize some recent results of our work directed to answer them. using the scattering approach to narrow rings we have succeeded to reproduce some of their structural properties in a qualitative sense, using unrealistic toy models as examples. we obtain narrow rings which are non-circular and display sharp edges. in addition, these rings may have multiple components which may entangle in a complicated dynamically evolving way forming a braided structure, or may display strongly azimuthal dependent features such as arcs. the appearance of these structural properties can be understood in terms of the underlying phase space.
Letter to the editor. Carta del director de Medisur.
Mikhail Benet Rodríguez
MediSur , 2003,
Abstract: -
Introduction to No 1 Vol 5 Presentación del número 1 volumen 5
Mikhail Benet Rodríguez
MediSur , 2009,
Abstract: -
Eldorado Revisited: Spanish Film-makers in Reagan’s America
Vicente J. Benet
European Journal of American Studies , 2010, DOI: 10.4000/ejas.8787
Abstract: In the early 1980s Spanish directors José Luis Borau and Bigas Luna produced two films – 0n the Line and Reborn respectively – that offered a trans-national perspective on American society of the early Reaganite 1980s. On the Line focussed on the issue of trafficking Mexican immigrants; Reborn dealt with tele-evangelism. Both narratives were presented as challenges to American unity as identified in the conservative social and cultural values of the time. Each film raised the issue of social hybridity and raised the question – to which both gave ambiguous answers – of whether different cultures can co-exist within a unified, monolithic American culture.
Multiple Components in Narrow Planetary Rings
L. Benet,O. Merlo
Physics , 2007, DOI: 10.1103/PhysRevLett.100.014102
Abstract: The phase-space volume of regions of regular or trapped motion, for bounded or scattering systems with two degrees of freedom respectively, displays universal properties. In particular, drastic reductions in the volume (gaps) are observed at specific values of a control parameter. Using the stability resonances we show that they, and not the mean-motion resonances, account for the position of these gaps. For more degrees of freedom, exciting these resonances divides the regions of trapped motion. For planetary rings, we demonstrate that this mechanism yields rings with multiple components.
Phase-Space Volume of Regions of Trapped Motion: Multiple Ring Components and Arcs
L. Benet,O. Merlo
Physics , 2008, DOI: 10.1007/s10569-008-9182-1
Abstract: The phase--space volume of regions of regular or trapped motion, for bounded or scattering systems with two degrees of freedom respectively, displays universal properties. In particular, sudden reductions in the phase-space volume or gaps are observed at specific values of the parameter which tunes the dynamics; these locations are approximated by the stability resonances. The latter are defined by a resonant condition on the stability exponents of a central linearly stable periodic orbit. We show that, for more than two degrees of freedom, these resonances can be excited opening up gaps, which effectively separate and reduce the regions of trapped motion in phase space. Using the scattering approach to narrow rings and a billiard system as example, we demonstrate that this mechanism yields rings with two or more components. Arcs are also obtained, specifically when an additional (mean-motion) resonance condition is met. We obtain a complete representation of the phase-space volume occupied by the regions of trapped motion.
Phase-Space Structure for Narrow Planetary Rings
L. Benet,O. Merlo
Physics , 2004, DOI: 10.1070/RD2004v009n03ABEH000285
Abstract: We address the occurrence of narrow planetary rings under the interaction with shepherds. Our approach is based on a Hamiltonian framework of non-interacting particles where open motion (escape) takes place, and includes the quasi-periodic perturbations of the shepherd's Kepler motion with small and zero eccentricity. We concentrate in the phase-space structure and establish connections with properties like the eccentricity, sharp edges and narrowness of the ring. Within our scattering approach, the organizing centers necessary for the occurrence of the rings are stable periodic orbits, or more generally, stable tori. In the case of eccentric motion of the shepherd, the rings are narrower and display a gap which defines different components of the ring.
Strands and braids in narrow planetary rings: A scattering system approach
O. Merlo,L. Benet
Physics , 2006, DOI: 10.1007/s10569-006-9051-8
Abstract: We address the occurrence of narrow planetary rings and some of their structural properties, in particular when the rings are shepherded. We consider the problem as Hamiltonian {\it scattering} of a large number of non-interacting massless point particles in an effective potential. Using the existence of stable motion in scattering regions in this set up, we describe a mechanism in phase space for the occurrence of narrow rings and some consequences in their structure. We illustrate our approach with three examples. We find eccentric narrow rings displaying sharp edges, variable width and the appearance of distinct ring components (strands) which are spatially organized and entangled (braids). We discuss the relevance of our approach for narrow planetary rings.
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