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Search Results: 1 - 10 of 191 matches for " Rebou?as "
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Estudos e práticas da economia (e da) política de comunica es na América Latina
Edgard Rebou?as
Comunica??o, Mídia e Consumo , 2005,
Abstract: Este artigo exp e um panorama do que vem sendo debatido na América Latina com referenciais da economia política das comunica es e das indústrias culturais ao longo dos últimos 50 anos. Mostra ainda como pesquisadores latino-americanos têm se destacado pela jun o de aportes do espa o público habermasiano, das políticas de comunica es, da economia política ortodoxa, das “novas” tecnologias e das indústrias culturais. O texto trata também dos riscos da ideologiza o e/ou do economicismo de muitos estudos e conclui observando a necessidade de mais diálogos entre pesquisadores e áreas. Palavras-chave: América Latina; hibridismo metodológico; economia política; políticas de comunica es; indústrias culturais. ABSTRACT This article expose a panorama of that is being debated in Latin America with theoretical references of the political economy of communications and the cultural industries to the long one of last 50 years. It also shows as Latin American researchers have worked with the hybridization of those approaches: the habermasian public space, the communications policies, the orthodox political economy, the “new” technologies and the cultural industries. The text also deals with the risks of the ideologization and/or the economicism of many studies and concludes observing the necessity of more dialogues between researchers and fields. Keywords: Latin America; methodological hybridism; politic economy; communications policies; cultural industries.
Pelo resgate da memória documental das ciências e da agricultura: o acervo do Instituto Biológico de S?o Paulo
Rebou?as, Márcia Maria;
História, Ciências, Saúde-Manguinhos , 2006, DOI: 10.1590/S0104-59702006000400011
Abstract: this brief inventory of the biological institute of s?o paulo's documental collection describes how the archive came to be and explains its relevance to history of sciences research in brazil. a short history of the institution provides insight into its activities in the field of agronomic research in s?o paulo and the role that sciences played in modernizing agriculture in that state. the collection contains documents by scientists whose names occupy a special place in the history of brazil, such as arthur neiva, henrique da rocha lima, and josé reis.
água e desenvolvimento rural
Rebou?as, Aldo da C.;
Estudos Avan?ados , 2001, DOI: 10.1590/S0103-40142001000300024
Abstract: discussions on water resources development generally focus on a variety of technical options, often without considering the potential political repercussions of each option. in this paper are incorporated both technical and political considerations in a tech-political decision-making framework. water resources development alternatives are then examined to evaluate their priorities for development in rural area of brazil. if we look at the world around us we see that brazil enjoys abundant fresh water resources: average per capita renewable water resources of about 35.000 m3/year in rivers and a per capita of 5.000 m3/year that could be developed from ground water reservoirs. nevertheless, the crisis has become apparent as drought; in others, as increased demand; and everywhere, as water pollution. however, fresh water should not appear as constraint in the overall planning process in more than 95 % of states in brazil, rather realistic development and production targets should be matched to its local water availability. one must began to realize one can no longer follow the philosophy of wastefulness use and discard domestic and industrial sewage into nearby water bodies. for many cases this approach is not merely another alternative, but the only one available.
Summary talk on Cosmology and Gravitation XXII Brazilian National Meeting on Particles and fields
Rebou?as, M.J.;
Brazilian Journal of Physics , 2002, DOI: 10.1590/S0103-97332002000500015
Abstract: the plenary lectures, parallel talks, oral presentations and poster contribuitions on cosmology and gravitation presented during the xxii brazilian national meeting on particles and fields are briefly reviewed. some general remarks are also presented.
Contratos na pintura: o caso de Volpi
Moema Martins Rebou?as
Galáxia , 2008,
Abstract: Tendo como fundamento a semiótica discursiva, discutiremos as estratégias de manipula o empregadas entre um enunciador e um enunciatário, que definem um contrato na pintura. A semiótica ao considerar a pintura como um texto, quando este trata da semelhan a com o mundo natural, pressup e a instala o de um contrato entre enunciador e enunciatário tendo como base um saber do enunciatário sobre o que este considera ser a "realidade" persuadido por um enunciador que o "faz-crer" do "parecido" da pintura com o mundo natural. Realiza es deste tipo s o chamadas de iconiza o, queé o "fazer parecer real" assumido pelo ní-vel figurativo de uma obra, n o se restringindo, portanto, aos textos imagéticos, mas a todos os textos que produzem efeito de realidade.Abstract: Having as base the discursive semiotcs, we shall discuss the strategies of manipulation used between a pronouncer and a speaker that define an agreement in the painting. The semiotics considering the painting as a text when this one treats thelikeness with the natural world presuppose the installation of an agreement between a pronouncer and a speaker having as base a knowledge of the speaker about what this one deems to be the persuaded "reality" by a pronouncer that makes him "believe" inthe "likeness" of the painting with the natural world. These types of accomplishments are called iconization, that is to "make something look like real", assumed by the figurative level of a work not restricting, therefore to the texts with icons, but for allthe texts that produce a real effect at the painting the creation of effects with a real effect with a real sense.
Summary talk on Cosmology and Gravitation XXII Brazilian National Meeting on Particles and fields
Rebou?as M.J.
Brazilian Journal of Physics , 2002,
Abstract: The plenary lectures, parallel talks, oral presentations and poster contribuitions on Cosmology and Gravitation presented during the XXII Brazilian National Meeting on Particles and fields are briefly reviewed. Some general remarks are also presented.
Abelhas (Apoidea) visitantes de flores de Comolia ovalifolia DC Triana (Melastomataceae) em uma área de restinga na Bahia
Oliveira-Rebou?as, Patrícia;Gimenes, Miriam;
Neotropical Entomology , 2004, DOI: 10.1590/S1519-566X2004000300006
Abstract: the flowers of comolia ovalifolia present poricidal anthers and their pollen serve as protein source to a specific group of bees, able to extract the pollen from the anthers through vibration. from january to december /2001, we observed the flowering of c. ovalifolia and the activity of the most frequent bees throughout the year. the peaks of flowering of c. ovalifolia occurred in march and from september to november/2001. the flowers of c. ovalifolia were visited by 16 species of bees, being the most frequent centris leprieuri (spinola), xylocopa subcyanea pérez, centris sp., euglossa sp. and florilegus similis urban. among these, c. leprieuri was the most frequent visitor in the flowers (89%) and its foraging period overlapped with the blooming of c. ovalifolia. this bee presented adequate size and efficient behavior in pollen collection and transfer to the stigma, being considered an effective pollinator of the flowers.
Potential pollinators of Comolia ovalifolia DC Triana (Melastomataceae) and Chamaecrista ramosa (Vog.) H.S. Irwin and Barneby var. ramosa (Leguminosae-Caesalpinioideae), in restinga, Bahia, Brazil
Oliveira-Rebou?as, P.;Gimenes, M.;
Brazilian Journal of Biology , 2011, DOI: 10.1590/S1519-69842011000300002
Abstract: comolia ovalifolia dc triana (melastomataceae) and chamaecrista ramosa (vog.) h.s. irwin and barneby var. ramosa (leguminosae - caesalpinioideae) are tropical plant species found in restinga (herbaceous-shrubby, sandy costal ecosystems). they have flowers with poricidal anthers and are pollinated by bees. the study sought to analyse potential pollinators of both plants during visits to their flowers in a restinga area in bahia. the flowering displayed by both species was considered continuous and long duration, constantly providing pollen to floral visitors. c. ovalifolia was visited by 17 species of bees and c. ramosa by 16 species, predominantly from the apidae family (with a similarity index of 74%). the behavior displayed by these visiting bees was of vibrating anthers. the small-sized euglossa sp. latreille, 1802 and florilegus similis urban, 1970 bees played less of a role as pollinators, since they rarely touched the flower stigma during harvests and were thus considered opportunist visitors or casual pollinators. centris decolorata lepetier, 1841 (= c. leprieuri) and xylocopa subcyanea perez, 1901 are large bees and were considered efficient pollinators of c. ovalifolia and c. ramosa because of the higher frequency and constancy of their visits, and their favourable behaviour and size for pollen transfer between flowers, which guarantees the survival of these native restinga plant species.
Cosmic topology: a brief overview
Rebou?as, M. J.;Gomero, G. I.;
Brazilian Journal of Physics , 2004, DOI: 10.1590/S0103-97332004000700012
Abstract: questions such as whether we live in a spatially finite universe, and what its shape and size may be, are among the fundamental open problems that high precision modern cosmology needs to resolve. these questions go beyond the scope of general relativity (gr), since as a (local) metrical theory gr leaves the global topology of the universe undetermined. despite our present-day inability to predict the topology of the universe, given the wealth of increasingly accurate astro-cosmological observations it is expected that we should be able to detect it. an overview of basic features of cosmic topology, the main methods for its detection, and observational constraints on detectability are briefly presented. recent theoretical and observational results related to cosmic topology are also discussed.
A note on cosmological parameters and the topology of the universe
Rebou?as, M. J.;Alcaniz, J. S.;
Brazilian Journal of Physics , 2005, DOI: 10.1590/S0103-97332005000700012
Abstract: given the wealth of increasingly accurate cosmological observations, especially the recent results from the wmap, and the development of methods and strategies in the search for cosmic topology, it is reasonable to expect that we should be able to detect the spatial topology of the universe in the near future. motivated by this, we examine to what extent a possible detection of a nontrivial topology of positively curved universe may be used to place constraints on the matter content of the universe. we show through concrete examples that the knowledge of the spatial topology allows to place constraints on the density parameters associated to dark matter (wm) and dark energy (wl).
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