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Search Results: 1 - 10 of 6483 matches for " Vincent Bonini "
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A Positive Mass Theorem on Asymptotically Hyperbolic Manifolds with Corners Along a Hypersurface
Vincent Bonini,Jie Qing
Physics , 2007, DOI: 10.1007/s00023-008-0358-8
Abstract: In this paper we take an approach similar to that in [M] to establish a positive mass theorem for asymptotically hyperbolic spin manifolds admitting corners along a hypersurface. The main analysis uses an integral representation of a solution to a perturbed eigenfunction equation to obtain an asymptotic expansion of the solution in the right order. This allows us to understand the change of the mass aspect of a conformal change of asymptotically hyperbolic metrics.
Hypersurfaces in hyperbolic space with support function
Vincent Bonini,Jose Espinar,Jie Qing
Mathematics , 2012,
Abstract: In this paper we develop a global correspondence between immersed horospherically convex hypersurfaces in hyperbolic space and complete conformal metrics on domains in the sphere. We establish results on when the hyperbolic Gauss map is injective and when an immersed horospherically convex hypersurface can be unfolded along the normal flow into an embedded one. These results allow us to establish general Alexandrov reflection principles of elliptic problems of both Weingarten hypersurfaces and complete conformal metrics and relations between them. Consequently, we are able to obtain, for instance, a strong Bernstein theorem for a complete, immersed, horospherically convex hypersurface of constant mean curvature in hyperbolic space.
Ricci Curvature Rigidity for Weakly Asymptotically Hyperbolic Manifolds
Vincent Bonini,Pengzi Miao,Jie Qing
Mathematics , 2003,
Abstract: A rigidity result for weakly asymptotically hyperbolic manifolds with lower bounds on Ricci curvature is proved without assuming that the manifolds are spin. The argument makes use of a quasi-local mass characterization of Euclidean balls from \cite{Miao} \cite{S_T} and eigenfunction compactification ideas from \cite{Qing}.
Hypersurfaces in Hyperbolic Poincaré Manifolds and Conformally Invariant PDEs
Vincent Bonini,José M. Espinar,Jie Qing
Mathematics , 2009,
Abstract: We derive a relationship between the eigenvalues of the Weyl-Schouten tensor of a conformal representative of the conformal infinity of a hyperbolic Poincar\'e manifold and the principal curvatures on the level sets of its uniquely associated defining function with calculations based on [9] [10]. This relationship generalizes the result for hypersurfaces in ${\H}^{n+1}$ and their connection to the conformal geometry of ${\SS}^n$ as exhibited in [7] and gives a correspondence between Weingarten hypersurfaces in hyperbolic Poincar\'e manifolds and conformally invariant equations on the conformal infinity. In particular, we generalize an equivalence exhibited in [7] between Christoffel-type problems for hypersurfaces in ${\H}^{n+1}$ and scalar curvature problems on the conformal infinity ${\SS}^n$ to hyperbolic Poincar\'e manifolds.
Immunology IV: clinical applications in health and disease by Joseph A. Bellanti
Sergio Bonini
World Allergy Organization Journal , 2012, DOI: 10.1097/wox.0b013e3182641db0
Regulatory Aspects of Allergen-Specific Immunotherapy: Europe Sets the Scene for a Global Approach
Sergio Bonini
World Allergy Organization Journal , 2010, DOI: 10.1097/wox.0b013e318272484e
Critical genre analysis and professional practice: the case of public contests to select professors for Brazilian public universities
Bonini, Adair;
Linguagem em (Dis)curso , 2010, DOI: 10.1590/S1518-76322010000300004
Abstract: several approaches have been applied to the analysis of language at work, among them, the ergologic (lacoste, 1998; nouroudine, 2002), the interactional-sociolinguistic (drew, heritage, 1992), and the genre-based (bazerman; paradis, 1991). in this article, focusing on the latter approach, i discuss the reasons and methods for analyzing professional genres. particularly, i center my attention on the approach which, more recently, has been called critical genre analysis (bhatia, 2004, 2007, 2009; motta-roth, 2008). as part of the theoretical reflection undertaken, i also present an introductory analysis of genres involved in the social practice of public contests for professor positions at brazilian universities. these examinations not only exemplify a kind of problematic relation between language and work, but they constitute an excellent example to illustrate a critical genre analysis (cga).
Reflex?es em torno de um conceito psicolingüístico de tipo de texto
BONINI, Adair;
DELTA: Documenta??o de Estudos em Lingüística Teórica e Aplicada , 1999, DOI: 10.1590/S0102-44501999000200004
Abstract: the text type concept, after a phase in which it was focused on a cognitive view by van dijk, based on the cognitive schemata theory of rumelhart, became an object of study by other researchers (adam, swales) in new perspectives. these recent studies strengthened the debate, providing theoretical material for the re-discussion of the concept of type in psycholinguistic terms. using a methodology of bibliographic research, the present article proposes to retake a discussion about textual superstructure.
Veículo de comunica??o e gênero textual: no??es conflitantes
Bonini, Adair;
DELTA: Documenta??o de Estudos em Lingüística Teórica e Aplicada , 2003, DOI: 10.1590/S0102-44502003000100003
Abstract: some textual phenomena that resemble genres (like magazines and newspapers) are commonly conceived as communication vehicles. taking this subject as a departing point, this article examines the notions of genre and communication vehicles in order to try to determine how both have been approximated at the theoretical level. following this line of thought, some elements are taken for the re-evaluation of the communicative and enunciative perspectives about genres.
Jornal escolar: gêneros e letramento midiático no ensino-aprendizagem de linguagem
Bonini, Adair;
Revista Brasileira de Linguística Aplicada , 2011, DOI: 10.1590/S1984-63982011000100009
Abstract: this article, focusing on the school newspaper, discusses the language teaching-learning from the concepts of genre and literacy. it is initially presents, in terms of the brazilian context, an overview of the recent discussion and methodologies on language teaching-learning. then, the article provides a brief overview of the work with newspaper at school and a review of studies involving experiments with school newspaper. toward the end, we present a proposal to work with the school newspaper, which also serves as a backdrop for other reflections.
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