Esta tese tem como objetivo analisar as discussões sobre a identidade ibero-americana realizadas por intelectuais nas revistas Cuadernos Americanos (CA) e Cuadernos Hispanoamericanos (CH) no período de 1942 a 1955. Também faz parte deste trabalho o estudo das análises propostas por esses intelectuais sobre as relações entre Ibero-América, Estados Unidos e Espanha nos contextos da II Guerra Mundial e da Guerra Fria. Embora se interessassem pelo mesmo foco (a Ibero-América), ambas as publicações tiveram origens e propostas distintas: as duas atuaram em campos ideológicos opostos e se constituíram como armas de luta política. CA foi gestada por um grupo de intelectuais mexicanos e exilados espanhóis que se identificavam com o republicanismo, e, portanto, eram opositores ferrenhos do franquismo; CH surgiu posteriormente, com vistas a ampliar as bases de apoio do regime franquista no Continente latino-americano, já que a Espanha estava isolada desde o final da Segunda Guerra em virtude de sua anterior identificação com a ideologia nazi-fascista e com um governo autoritário e simpático ao Eixo. / This thesis presents an analysis of the debates around Iberian-American identity accomplished by intellectuals in the magazines Cuadernos Americanos (CA) and Cuadernos Hispanoamericanos (CH), in the years 1942 to 1955. This works also examines the analysis proposed by these intellectuals about the relationship between Iberian-American, United States and Spain during World War II and the Cold War. Although the magazines had the same focus in Iberian-America, they had distinct origins and proposals: both served as political instrument in opposite ideological terrains. CA was created by a group of intellectuals (Mexicans and Spanish in exile) in a hard opposition to Franquismo; CH appeared later aiming to enlarge the Latin-American support of Francos regime, as this was isolated since the end of WWII due to Francos authoritarianism and Nazi-Fascist alignment.

Esta tese tem como objetivo analisar as discussões sobre a identidade ibero-americana realizadas por intelectuais nas revistas Cuadernos Americanos (CA) e Cuadernos Hispanoamericanos (CH) no período de 1942 a 1955. Também faz parte deste trabalho o estudo das análises propostas por esses intelectuais sobre as relações entre Ibero-América, Estados Unidos e Espanha nos contextos da II Guerra Mundial e da Guerra Fria. Embora se interessassem pelo mesmo foco (a Ibero-América), ambas as publicações tiveram origens e propostas distintas: as duas atuaram em campos ideológicos opostos e se constituíram como armas de luta política. CA foi gestada por um grupo de intelectuais mexicanos e exilados espanhóis que se identificavam com o republicanismo, e, portanto, eram opositores ferrenhos do franquismo; CH surgiu posteriormente, com vistas a ampliar as bases de apoio do regime franquista no Continente latino-americano, já que a Espanha estava isolada desde o final da Segunda Guerra em virtude de sua anterior identificação com a ideologia nazi-fascista e com um governo autoritário e simpático ao Eixo. / This thesis presents an analysis of the debates around Iberian-American identity accomplished by intellectuals in the magazines Cuadernos Americanos (CA) and Cuadernos Hispanoamericanos (CH), in the years 1942 to 1955. This works also examines the analysis proposed by these intellectuals about the relationship between Iberian-American, United States and Spain during World War II and the Cold War. Although the magazines had the same focus in Iberian-America, they had distinct origins and proposals: both served as political instrument in opposite ideological terrains. CA was created by a group of intellectuals (Mexicans and Spanish in exile) in a hard opposition to Franquismo; CH appeared later aiming to enlarge the Latin-American support of Francos regime, as this was isolated since the end of WWII due to Francos authoritarianism and Nazi-Fascist alignment.

Les terrains en faciès des schistes bleus dans l'Arc Ibéro-Armoricain sont rares et limités à de petits domaines. Un de ces exemples est l'unité de Ceán qui constitue l'affleurement le plus occidental de l'Allochtone moyen dans le NO du Massif Ibérique et dans la chaîne varisque de l'Europe occidentale. L'unité de Ceán est interprétée comme une séquence volcanosédimentaire qui représente probablement la couverture d'une croûte transitionnelle ou océanique. Les informations sur l'évolution P–T de roches de ce terrain sont donc essentielles pour comprendre les caractéristiques et les mécanismes de la subduction de cette marge. L'unité de Ceán forme la partie supérieure du Complexe de Malpica-Tui (MTC) et comprend des proportions variables de métapélites à glaucophane-chloritoïde et de roches mafiques avec d'abondants pseudomorphes de lawsonite automorphe bien préservés. L'objectif principal de cette recherche est une étude détaillée de l'évolution métamorphique de ces lithologies à l'aide de diagrammes de phases . L'analyse pétrologique montre que l'unité de Ceán a enregistré une évolution métamorphique en trois étapes. (i) Un métamorphisme précoce (M1), lié à la subduction (ii) Un métamorphisme prograde dans le faciès des schistes bleus (iii) Un métamorphisme lié à l'exhumation (M3, post-M3). Les résultats obtenus à partir de la modélisation numérique des effets du H2O et Fe2O3 dans l'évolution des roches du faciès des schistes bleus ont donné des contraintes de premier ordre pour les modèles géodynamiques qui peuvent avoir une application générale. (i) Cette étude propose que le métamorphisme des zones de subduction peut se développer dans des conditions de sous-saturation en H2O, liées à la cristallisation de la lawsonite. La transition entre le faciès schistes bleus à lawsonite et le faciès des amphibolites / schistes verts produit une hydratation significative qui est principalement le résultat de la déstabilisation de la lawsonite. (ii) La proportion du fer ferrique à une forte influence sur les équilibres de phases. Les valeurs analysées du Fe2O3 ne reflètent pas nécessairement l'état d'oxydation pendant les principales étapes de l'évolution métamorphique et sont probablement facilement modifies par l'altération superficielle, même dans les échantillons frais en apparence. L'utilisation des pseudosections P/T–X(H2O/Fe2O3) avec une analyse pétrographique détaillée (incluant une bonne connaissance de la composition chimique des minéraux et de leurs relations texturales) est alors nécessaire pour estimer le degré de saturation en fluide et l'état réel oxydation afin d'évaluer correctement les conditions P–T pendant le métamorphisme de subduction. L'âge du pic du métamorphisme dans le faciès des schistes bleus a été contraint à environ 363±2 Ma par la méthode 40Ar/39Ar sur muscovite phengitique des schistes pélitiques. Les datations sur les muscovites des mylonites quartzo-feldspathiques du détachement de Bembibre-Ceán, à la base de l'unité de Ceán a donné un âge d'environ 337±3 Ma. Cet âge est interprété comme le début de la tectonique en extension qui mène au collapse gravitationnel de l'orogène. Les différences entre l'événement HP/BT et le début de la tectonique post-nappes suggèrent une vitesse d'exhumation de 2–2,5 mm/an pour le complexe de Malpica-Tui. Ces âges supportent l'équivalence de l'unité de Ceán avec l'unité supérieure de l'Ile de Groix dans le Massif Armoricain et suggèrent que les deux terrains partagent le même événement en faciès des schistes bleus vers 360–370 Ma qui peut représenter la subduction tardi-dévonienne carbonifère précoce de la marge nord du Gondwana sous le Laurussia, au début de la tectonique varisque. / Blueschist-facies (BSF) terranes in the Ibero-Armorican Arc are restricted to scarce and relatively small areas. One of these examples is the Ceán Unit (CU), the westernmost exposure of the Middle Allochthon in the NW Iberian Massif, and in the European Variscan belt. The CU is a volcano-sedimentary sequence interpreted as a part of the cover of a transitional (continental to oceanic) crust of the north Gondwana margin during its subduction below Laurussia. Thus, constraints on the pressure–temperature (P–T) evolution of rocks from this terrain are essential to understand the subduction of this margin. The CU forms the upper tectonic sheet of the Malpica-Tui Complex (MTC) and comprises variable proportions of glaucophane-chloritoid-bearing metapelites and mafic rocks with abundant well-preserved pseudomorphs after euhedral lawsonite. The main objective of this research consists in a detailed study of the metamorphic evolution of these lithologies using pseudosection approach. Petrological analysis shows that the CU recorded a three-stage metamorphic evolution comprising (i) early subduction-related MP/LT metamorphism (ca. 350–380 ºC, 12–14 kbar), which is only preserved in the basal part of the sequence. (ii) Subduction-related blueschist/LT-eclogite-facies prograde metamorphism characterized by a H2O-undersaturated prograde P–T path peaking at 19–22 kbar, corresponding to a maximum burial of ca. 65–70 km. (iii) Exhumation-related metamorphism occurred in two stages (1) a slower nearly isothermal decompression and a phase of fast cooling once the rocks have reached an upper crustal level. Furthermore, thermodynamic modelling of the effects of H2O and Fe2O3 in the metamorphic evolution of BSF rocks shows that (i) subduction zone metamorphism may occur in H2O-undersaturated conditions induced by the crystallization of a significant modal amount of lawsonite, and (ii) the analysed values of Fe2O3 may not reflect the oxidation state during the main metamorphic evolution and are probably easily modified by superficial alteration even in apparently fresh samples. Then, the use of P–T–X(H2O/Fe2O3) pseudosections together with a thorough petrographic investigation, and an extensive knowledge on the mineral chemistry and the textural relationships is necessary to estimate the extent of fluid-saturation during subduction zone metamorphism and the real oxidation state of the rocks to correctly evaluate the P–T conditions. The age of the peak BSF metamorphism has been constrained at ca. 363±2 Ma by 40Ar/39Ar step-heating of phengitic muscovite from the pelitic schists, supporting the equivalence of the CU and its counterpart in the Armorican Massif, the Upper Unit of Ile de Groix. This suggest that both terranes share a BSF event constrained at ca. 360–370 Ma, that may represent the Late Devonian-Early Carboniferous subduction of the northern margin of Gondwana beneath Laurussia, at the onset of the Variscan collision.

[pt] A produção acadêmica e científica sobre a Educação Ambiental (EA) no Brasil é grande e significativa. O objetivo deste estudo é realizar uma análise preliminar da produção acadêmica em EA, a partir de uma visão teórica crítica. A EA é qualificada, por alguns autores aqui estudados, como um campo teórico em construção, o que aponta para a importância da realização de balanços periódicos desse conhecimento que podem proporcionar o avanço para a compreensão do campo de estudo e ampliação do acesso à informação. Esta Dissertação é um estudo exploratório, com inspiração metodológica em pesquisas do tipo estado da arte que, além da revisão da literatura pertinente ao seu objeto de estudo, tomou por base três fontes de dados: o Banco de Teses da CAPES, entre 1988 e 2004, o V Congresso Ibero-Americano de Educação Ambiental, de 2006, e 12 Dissertações do Município do Rio de Janeiro, defendidas entre os anos 2000 e 2004. Cada uma destas fontes mereceu tratamento diverso. O Banco de Teses foi apenas apresentado em sua expressão numérica, agrupadas as teses sob diversas categorias: autoria, título, orientador, nível do curso, origem instituc ional, época e área do Curso de que se originou. Criou-se para os trabalhos do Congresso, um outro banco de dados com informações, além da sua origem, relacionadas às áreas de atuação da EA, e à metodologia do estudo apresentado. Finalmente, as 12 Dissertações cariocas analisadas o foram em suas relações com a produção do país, e descritas em seus elementos pré-textuais, textuais e pós-textuais. Destaque especial foi feito em relação aos seus objetivos, à metodologia usada, à bibliografia consultada, ao seu quadro teórico e aos resultados alcançados. Concluiu-se, na presente Dissertação, que, o olhar panorâmico, gerador de dois novos bancos de dados, e o olhar focalizado, que possibilitou melhor compreensão do quadro conceitual em EA de pesquisas realizadas, contribuíram para confirmar as diversas correntes de pensamento presentes no campo da EA, complementando os estudos anteriores, e trazendo novas possibilidades de reflexão. / [en] The academic and scientific production about Environmental Education (EE) in Brazil is large and significant. The aim of this study is to accomplish an introductory analyze of the academic production about EE, concerning a theoretical and critical view. The EE is qualified as a theoretical field in progress by some authors below-mentioned and this is a sign of the importance of a periodic knowledge evaluation to provide both the advance of understanding in this field of study and to amplify the access to information. This Dissertation is an exploratory study, with a methodological inspiration from researches called art state. Besides revising the pertinent literature to its object of study, it is based on three fountains: the CAPES data basis during 1988/2004, the Fifth EE Iberian- American Congress, in 2006 and twelve theses from Rio de Janeiro City, between 2000 and 2004. Each of these fountains deserved a special approach. The CAPES data bank was shown in numbers, the theses were classified according to different categories: author, title, instructor, level of the course, institutional origin, period of time and area of the course they had come from. To the Congress Works, another data bank was created informing not only their origin but the areas where the EE had acted and the employed methodology too. At last, the twelve Dissertations from Rio de Janeiro were analyzed in relation to the production all over the country. They were described including the pre- textual elements, the textual ones and the post-textual ones. A special attention was given to their objectives , the methodology they followed, the bibliography, the theoretical views and the results they reached. In this Dissertation, we came to an evidence: the panoramic observation created two new data banks and the focused observation brought a better comprehension of the EE concepts. Both of them gave a contribution to confirm the various streams of thoughts found in the field of the EE, complemented the previous studies and brought new possibilities of reflection.

Le chapiteau ibéro-maghrébin apparaît aujourd’hui comme l’une des expressions les plus caractéristiques de la sculpture islamique médiévale : il connaît du IXe au XIVe siècle, avec une riche production, une incessante adaptation à son contexte politique et social ; il s’affirme ainsi comme un reflet privilégié de l’art islamique en Occident et de son évolution. Notre choix s’est porté sur cet élément architectural car il apparaît comme un élément clé — membre d’architecture et œuvre ornementale à la fois — pour appréhender l’art et les techniques du monde ibéro-maghrébin du bas Moyen Age confrontée à la poussée chrétienne des XIIIe et XIVe siècles. Seules les villes nasrides, mérinides et abd al-wadides échappent aux reconquêtes du XIIIe siècle. Le chapiteau constitue l’un des témoins de ce nouveau contexte historique et géographique de l’art islamique d’Occident. Pour mieux saisir ce phénomène, nous avons pris le parti d’étudier les chapiteaux islamiques ibéro-maghrébins dans une perspective diachronique. Ils apparaissent comme le fruit d’une longue évolution que nous avons tenté de saisir dans sa globalité avant de mettre en lumière, à partir d’un catalogue raisonné, la production des trois émirats et des diverses écoles développées au bas Moyen Age. La perspective ibéro-maghrébine retenue a permis d’établir une grille de classement typologique inédite, qui englobe toute la zone visée. Elle met en lumière une évidente évolution et une diversité qui révèle les particularismes liés à la vitalité de foyers d’art sans cesse plus nombreux. Cette évolution, marquée par bien des diversifications régionales, témoigne, au reste aussi bien, de riches échanges entre les émirats de l’aire culturelle ibéro-maghrébine. / The Ibero-Maghrebian capital is one of the most characteristic forms of medieval Islamic sculpture. Prolifically produced from the 9th to the 14th century, it was constantly adapted to its social and political context, and became a prime reflection of Islamic art in the West and its evolution. In the present work I chose to focus on this architectural element because it is key, as at once architectural member and ornamental work, to understanding the art and techniques of the Ibero-Maghrebian world of the Low Middle Ages, and notably its confrontation with the Christian push of the 13th and 14th centuries. Only Nasrid, Marinid and Zayyanid cities escaped the reconquests of the 13th century, and the capital is one of the reflections of this new historical and geographical context for Islamic art in the West. To better grasp this phenomenon, I chose to study Ibero-Maghrebian Islamic capitals from a diachronic perspective. These capitals are the fruit of a long process of evolution, which I describe overall before examining the production of the three emirates and the various schools developed in the Low Middle Ages. By taking an Ibero-Maghrebian perspective, I was able to establish a novel typological framework which encompasses productions throughout the entire area. It highlights clear change over time and a diversity that reflects particularisms linked to the vitality of increasingly numerous centres of production. This evolution, marked by many regional diversifications, testifies to the rich exchanges between the emirates of the Ibero-Maghrebian cultural space.

Esta investigación trata de la introducción de la oferta obligatoria de Lengua Española en las escuelas brasileñas y de las explicaciones, ya naturalizadas entre todos, que consideran la enseñanza del castellano en todo territorio nacional (Ley 11161/05) una consecuencia natural del proceso de integración de Brasil en el MERCOSUR. Nos proponemos, dentro del dispositivo teórico y analítico del Análisis del Discurso francés, a problematizar la cuestión al lanzar nuevos gestos de lectura sobre el acontecimiento. En este sentido, el proceso de análisis del corpus está acompañado de un proficuo y constante diálogo con la Historia y de reflexiones sobre políticas lingüísticas desarrolladas, principalmente, por José del Valle. El corpus está constituido por leyes, protocolos y proyectos de leyes presentados entre 1958 y 2005; secuencias discursivas originarias de artículos de periódicos españoles, pronunciamientos presidenciales y de la Casa Real española así como declaraciones proferidas durante eventos internacionales de promoción de la lengua española. El análisis revela la existencia del discurso integrador que atraviesa todos los proyectos que, por casi medio siglo, visaron la obligatoriedad del estudio de la lengua española en Brasil, tal como sugieren las re-significaciones presentes en sus (re) presentaciones: integración panamericana; latinoamericana; de los países del Cono Sur e iberoamericana. Esta última, la integración iberoamericana, sugiere, a la vez, la existencia de un discurso de carácter fundacional - siguiendo las reflexiones de Zoppi-Fontana y Orlandi - a través del cual se da la instauración de nuevas memorias para la relación colonizador/colonizado y la producción de nuevos sentidos para la oferta obligatoria de Lengua Española en toda la red de enseñanza brasileña. Es la integración iberoamericana, pieza clave de la actual política lingüística de España para Brasil, la que nos posibilita redimensionar discursivamente el acontecimiento de la Ley 11161/05, tal como nos propusimos al principio. / Esta investigação trata da introdução da oferta obrigatória da Língua Espanhola nas escolas brasileiras e das explicações, já naturalizadas em nosso meio, que consideram o ensino do castelhano em todo o território nacional (Lei 11161/05) uma conseqüência natural do processo de integração do Brasil no MERCOSUL. Propomo-nos, dentro do dispositivo teórico e analítico da Análise do Discurso francesa, a problematizar a questão lançando novos gestos de leitura sobre o acontecimento. Nesse sentido, o processo de análise do corpus se faz acompanhar de um profícuo e constante diálogo com a História e das reflexões sobre políticas lingüísticas desenvolvidas, sobretudo, por del Valle. O corpus está constituído de leis, protocolos e projetos de leis apresentados entre 1958 e 2005; seqüências discursivas oriundas de artigos de jornais espanhóis, pronunciamentos presidenciais e da Casa Real espanhola, bem como declarações proferidas durante eventos internacionais de promoção da Língua Espanhola. A análise evidencia a existência do discurso integrador que atravessa todos os projetos que, por quase meio século, visaram a obrigatoriedade do estudo da Língua Espanhola no Brasil, tal como sugerem as re-significações contidas em suas (re)apresentações: integração pan-americana; latino-americana; dos países do Cone Sul e ibero-americana. Esta última, a integração ibero-americana sugere, ao mesmo tempo, a existência de um discurso de caráter fundacional- seguindo as reflexões de Zoppi-Fontana e Orlandi- através do qual se dá a instalação de novas memórias para a relação colonizador/colonizado e a produção de novos sentidos para a oferta obrigatória da Língua Espanhola em toda a rede de ensino brasileira. É a integração ibero-americana, peça-chave da atual política lingüística da Espanha para o Brasil, que nos permite redimensionar discursivamente o acontecimento da Lei 11161/2005, tal como nos propomos inicialmente.

L’objet général de la recherche est de baliser un champ de réflexion sur la notion d’Hispanophonie, à travers une approche transversale de la communauté hispanophone linguistique, culturelle, politique et économique. Notre objectif est de tenter d’en comprendre les mécanismes de définition et d’affirmation et de questionner ses fondements et ses enjeux. Nous avons déterminé deux angles pour analyser la construction de l’Hispanophonie : le registre du discours et le registre de l’agir. Pour mener à bien la recherche, nous combinons deux types de réflexion à partir de ces deux axes de structure centrale : (a) l'une centrée sur le registre du discours, portant sur l'élaboration de la notion d'Hispanophonie, par analogie à celle de Francophonie, en nous basant sur l'existence d'une "Communauté de fait" et en livrant un éclairage à la fois historique et politique de sa construction ;(b) et l'autre axée sur le registre de l’agir, portant sur la compréhension et le décryptage des logiques de réseaux qui mobilisent activement les nations du sous-continent américain, dans leur recherche de visibilité politique, économique, diplomatique, linguistique et culturelle sur la scène internationale. A partir d’une analyse sur les stratégies discursives, nous étudierons les courants idéologiques et les différentes formulations, de l’Hispanité à la Communauté Ibéro-américaine des Nations, qui sous-tendent la construction de l'Hispanophonie. Nous démontrerons que les liens, qui fondent le sentiment d’appartenance et d’adhésion communautaire, dans le registre du discours, ne sont pas exclusifs dans le registre de l’agir. Si les discours politiques, célébrant les liens, parviennent à définir la communauté hispanophone et à la faire exister symboliquement ; au-delà des discours, l’Hispanophonie se cherche dans sa quête de construction et ne parvient pas à affirmer clairement son existence en son sein et, par conséquent, sa légitimité sur la scène internationale, dans le registre de l’action. / The general purpose of this thesis is to delimit a field of reflection about the notion of Hispanophony, Spanish-speaking World, through a transversal approach of the linguistic, cultural, political and economic Hispanic community. Our aim is to try to comprehend the mechanisms of its definition and assertion and to question its foundations and challenges. We have identified two angles to pursue in this analysis of the construction of Hispanophony: the register of speech and the register of action. In order to pursue this research, we will combine two types of reflection, deriving from these two axes of the general structure: (a) one centered on the register of discourse, and the idea of elaborating the notion of Hispanophony, by analogy to that of the Francophony, taking as our basis the existence of a "Community of Fact" or "Established Community" and highlighting its historical and political construction; (b) the other focused on the register of action, based on the comprehension and the deciphering of the logic of social networks that actively mobilize the nations of the Sub-American continent, in their quest for political, economic, diplomatic, linguistic and cultural presence on the international stage.Starting from an analysis of discursive strategies, we will examine the ideological currents and different ways of expressing them from Hispanity to the Ibero-American Community of Nations, which underlie the construct of Hispanophony. We will demonstrate that the close links that create the feeling of belonging and sense of community, in the register of discourse, are not exclusive in the register of action. If political speeches, by celebrating these links, succeeds in defining the Hispanic community and making it symbolically exist; beyond the rhetoric of discourse, Hispanophony is seeking for itself in its quest for selfconstruction and remains unable to clearly affirm its existence within its core, and, consequently, its legitimacy on the international scene, in the register of action.

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This thesis aims to discuss the History of Science in the Modern Age. It is a historical- philosophical reflection on the relationship between Science and Religion in the seventeenth century through the trip, works and life of the Czech mathematician, astronomer and Jesuit priest Valentin Stancel in Moravia, Bohemia, Italy, Portugal and Brazil . This study seeks to redimension the participation of the priests of the Society of Jesus in the development of the modern era by higlighting the activity of the Jesuit priests in the political-religious and scientific transformations that occurred in the sixteenth and seventeenth centuries in Europe, in the Orient and in Portuguese America. The present study aims to reflect on the scientific discoveries of the sixteenth and seventeenth centuries, especially in the fields of mathematics and astronomy; the new conception of man and world that springs from the political and religious transformations of reformist thought and cultural renaissance; the shock of the new scientific theories and experiences with the Sacred Scriptures and consequently with Christian-Aristotelian scholastic theology; besides contesting the lack of participation of priests, or even religion, in contributing for the development of science. The timeframe of the work takes place primarily...

L’objet général de la recherche est de baliser un champ de réflexion sur la notion d’Hispanophonie, à travers une approche transversale de la communauté hispanophone linguistique, culturelle, politique et économique. Notre objectif est de tenter d’en comprendre les mécanismes de définition et d’affirmation et de questionner ses fondements et ses enjeux. Nous avons déterminé deux angles pour analyser la construction de l’Hispanophonie : le registre du discours et le registre de l’agir. Pour mener à bien la recherche, nous combinons deux types de réflexion à partir de ces deux axes de structure centrale : (a) l'une centrée sur le registre du discours, portant sur l'élaboration de la notion d'Hispanophonie, par analogie à celle de Francophonie, en nous basant sur l'existence d'une « Communauté de fait » et en livrant un éclairage à la fois historique et politique de sa construction ; (b) et l'autre axée sur le registre de l’agir, portant sur la compréhension et le décryptage des logiques de réseaux qui mobilisent activement les nations du sous-continent américain, dans leur recherche de visibilité politique, économique, diplomatique, linguistique et culturelle sur la scène internationale. A partir d’une analyse sur les stratégies discursives, nous étudierons les courants idéologiques et les différentes formulations, de l’Hispanité à la Communauté Ibéro-américaine des Nations, qui sous-tendent la construction de l'Hispanophonie. Nous démontrerons que les liens, qui fondent le sentiment d’appartenance et d’adhésion communautaire, dans le registre du discours, ne sont pas exclusifs dans le registre de l’agir. Si les discours politiques, célébrant les liens, parviennent à définir la communauté hispanophone et à la faire exister symboliquement ; au-delà des discours, l’Hispanophonie se cherche dans sa quête de construction et ne parvient pas à affirmer clairement son existence en son sein et, par conséquent, sa légitimité sur la scène internationale, dans le registre de l’action. / The general purpose of this thesis is to delimit a field of reflection about the notion of Hispanophony, the Spanish-speaking World, through a transversal approach of the linguistic, cultural, political and economic Hispanic community. Our aim is to try to comprehend the mechanisms of its definition and assertion and to question its foundations and challenges. We have identified two angles to pursue in this analysis of the construction of Hispanophony: the register of speech and the register of action. In order to pursue this research, we will combine two types of reflection, deriving from these two axes of the general structure: (a) one centered on the register of discourse, and the idea of elaborating the notion of Hispanophony, by analogy to that of the Francophony, taking as our basis the existence of a “Community of Fact” or “Established Community” and highlighting its historical and political construction; (b) the other focused on the register of action, based on the comprehension and the deciphering of the logic of social networks that actively mobilize the nations of the South-American continent, in their quest for political, economic, diplomatic, linguistic and cultural presence on the international stage. Starting from an analysis of discursive strategies, we will examine the ideological currents and different ways of expressing them from Hispanity to the Ibero-American Community of Nations which underlie the construct of Hispanophony. We will demonstrate that the close links that create the feeling of belonging and sense of community, in the register of discourse, are not exclusive in the register of action. If political speeches, by celebrating these links, succeed in defining the Hispanic community and making it symbolically exist; beyond the rhetoric of discourse, Hispanophony is seeking for itself in its quest for self-construction and remains unable to clearly affirm its existence within its core, and, consequently, its legitimacy on the international scene, in the register of action. / Cette thèse de doctorat a été réalisée en cotutelle internationale entre l'Université de Montréal (Canada) et l'Université Sorbonne Nouvelle Paris 3 (France).