994 resultados para Patagònia (Argentina i Xile)
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El objetivo del trabajo es determinar si el uso de un grupo de verbos es propio del español de Argentina o si, por el contrario, se extiende a otros países hispanohablantes. Para ello, se analizan el proceso de derivación verbal, la semántica y el carácter neológico de las voces.
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This paper analyses the regional determinants of exit in Argentina. We find evidence of a dynamic revolving door by which past entrants increase current exits, particularly in the peripheral regions. In the central regions, current and past incumbents cause an analogous displacement effect. Also, exit shows a U-shaped relationship with respect to the informal economy, although the positive effect is weaker in the central regions. These findings point to the existence of a core-periphery structure in the spatial distribution of exits. Key words: firm exit, count data models, Argentina JEL: R12; R30; C33
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To date, published studies of alluvial bar architecture in large rivers have been restricted mostly to case studies of individual bars and single locations. Relatively little is known about how the depositional processes and sedimentary architecture of kilometre-scale bars vary within a multi-kilometre reach or over several hundreds of kilometres downstream. This study presents Ground Penetrating Radar and core data from 11, kilometre-scale bars from the Rio Parana, Argentina. The investigated bars are located between 30km upstream and 540km downstream of the Rio Parana - Rio Paraguay confluence, where a significant volume of fine-grained suspended sediment is introduced into the network. Bar-scale cross-stratified sets, with lengths and widths up to 600m and thicknesses up to 12m, enable the distinction of large river deposits from stacked deposits of smaller rivers, but are only present in half the surface area of the bars. Up to 90% of bar-scale sets are found on top of finer-grained ripple-laminated bar-trough deposits. Bar-scale sets make up as much as 58% of the volume of the deposits in small, incipient mid-channel bars, but this proportion decreases significantly with increasing age and size of the bars. Contrary to what might be expected, a significant proportion of the sedimentary structures found in the Rio Parana is similar in scale to those found in much smaller rivers. In other words, large river deposits are not always characterized by big structures that allow a simple interpretation of river scale. However, the large scale of the depositional units in big rivers causes small-scale structures, such as ripple sets, to be grouped into thicker cosets, which indicate river scale even when no obvious large-scale sets are present. The results also show that the composition of bars differs between the studied reaches upstream and downstream of the confluence with the Rio Paraguay. Relative to other controls on downstream fining, the tributary input of fine-grained suspended material from the Rio Paraguay causes a marked change in the composition of the bar deposits. Compared to the upstream reaches, the sedimentary architecture of the downstream reaches in the top ca 5m of mid-channel bars shows: (i) an increase in the abundance and thickness (up to metre-scale) of laterally extensive (hundreds of metres) fine-grained layers; (ii) an increase in the percentage of deposits comprised of ripple sets (to >40% in the upper bar deposits); and (iii) an increase in bar-trough deposits and a corresponding decrease in bar-scale cross-strata (<10%). The thalweg deposits of the Rio Parana are composed of dune sets, even directly downstream from the Rio Paraguay where the upper channel deposits are dominantly fine-grained. Thus, the change in sedimentary facies due to a tributary point-source of fine-grained sediment is primarily expressed in the composition of the upper bar deposits.
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The question of how to quantify insufficient coping behavior under chronic stress is of major clinical relevance. In fact, chronic stress increasingly dominates modern work conditions and can affect nearly every system of the human body, as suggested by physical, cognitive, affective and behavioral symptoms. Since freshmen students experience constantly high levels of stress due to tight schedules and frequent examinations, we carried out a 3-center study of 1,303 students from Italy, Spain and Argentina in order to develop socioculturally independent means for quantifying coping behavior. The data analysis relied on 2 self-report questionnaires: the Coping Strategies Inventory (COPE) for the assessment of coping behavior and the Zurich Health Questionnaire which assesses consumption behavior and general health dimensions. A neural network approach was used to determine the structural properties inherent in the COPE instrument. Our analyses revealed 2 highly stable, socioculturally independent scales that reflected basic coping behavior in terms of the personality traits activity-passivity and defeatism-resilience. This replicated previous results based on Swiss and US-American data. The percentage of students exhibiting insufficient coping behavior was very similar across the study sites (11.5-18.0%). Given their stability and validity, the newly developed scales enable the quantification of basic coping behavior in a cost-efficient and reliable way, thus clearing the way for the early detection of subjects with insufficient coping skills under chronic stress who may be at risk of physical or mental health problems.
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The Argentina National Road 7 that crosses the Andes Cordillera within the Mendoza province to connect Santiago de Chile and Buenos Aires is particularly affected by natural hazards requiring risk management. Integrated in a research plan that intends to produce landslide susceptibility maps, we aimed in this study to detect large slope movements by applying a satellite radar interferometric analysis using Envisat data, acquired between 2005 and 2010. We were finally able to identify two large slope deformations in sandstone and clay deposits along gentle shores of the Potrerillos dam reservoir, with cumulated displacements higher than 25mm in 5years and towards the reservoir. There is also a body of evidences that these large slope deformations are actually influenced by the seasonal reservoir level variations. This study shows that very detailed information, such as surface displacements and above all water level variation, can be extracted from spaceborne remote sensing techniques; nevertheless, the limitations of InSAR for the present dataset are discussed here. Such analysis can then lead to further field investigations to understand more precisely the destabilising processes acting on these slope deformations.
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Na região fruti-ortícula do cinturião verde da cidade de Córdoba, Argentina, ocorre com frequência nos períodos de inverno e primavera o aparecimento de Polygomun aviculare. O objetivo do presente trabalho foi o de conhecer a fenologia desta espécie e as necessidades bioclimáticas de cada uma das etapas do seu ciclo de vida. Para estas análises conduziu-se um ensaio em uma propriedade do cinturião verde, na região Nordeste de Córdoba, durante os anos de 1988, 1989 e 1990. Determinrou-se as fases e subperíodos do ciclo evolutivo da espécie e parâmetros como altura e densidade de plantas e dados meteorológicos. O estudo permitiu estabelecer o fluxo estacional de emergência e determinar o tipo ecológico de planta daninha quanto à estação de crescimento. Os aspectos ecológicos levantados servirão de ferramentas para implementar estratégias de controle desta planta daninha.
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El objetivo del presente trabajo fue relevar y diferenciar especies del género Ipomoea presentes en diferentes fases de desarrollo, en el área de riego del Río Dulce, Santiago del Estero, Argentina. Para ello fueron herborizados y fotografiados diversos ejemplares encontrados en la región. En el laboratorio, después del trabajo de identificación, fueron descritas las diversas fases de desarrollo de la planta: semilla, plántula y estado adulto, creándose códigos de identificación para cada fase. Se registraron ocho especies del género Ipomoea, I. alba; I. amnicola; I. cairica; I. carnea; I. grandifolia; I. nil; I. purpurea e I. quamoclit, algunas de las cuales se cultivan como ornamentales, otras aparecen como ruderales y algunas son malezas en cultivos de la región.
Limited occurrence of resistant radish (Raphanus sativus) to AHAS-inhibiting herbicides in Argentina
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Radish has developed feral and weedy biotypes, which is a concern for agriculture around the world. In Argentina, it is one of the most widespread and troublesome crop weeds. In Brazil, this species has developed herbicide-resistance to acetohydroxyacid synthase (AHAS) inhibiting herbicides. The objective of this study was to record the presence of herbicide-resistant weedy radish plants in Argentina. In spring 2008, we found a small population of radish at the end of the flowering stage in an imidazolinone-tolerant canola field treated with imazethapyr. Screening and dose-response tests were conducted to two successive generations. They proved the biotype resistant status, and showed extensive survival (between 50 and 80% of control) to the application of a double dose of four AHAS‑inhibiting herbicides from two different chemical families (imidazolinones and sulfonylureas). Dose-response assays exhibited very high resistance for imazethapyr (LD50 = 2452.5 g a.i. ha-1, GR50 = 2926.9 g a.i. ha-1) and intermediate for metsulfuron (LD50 = 3.0 g a.i. ha-1, GR50 = 43.2 g a.i. ha-1). The acquisition of cross-resistance to different herbicide families would confer an adaptive and invasive advantage in agricultural environments to this biotype. Due to the herbicide rotation conducted in the field, the dispersion of this biotype was restricted. This is the first report of resistance in weedy radish in Argentina.
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De manière générale, ma thèse examine les mécanismes des processus sociaux, économiques et politiques ayant contribué, souvent de manière contradictoire, à la (re)définition des critères d’adhésion au sein de la nation et de l’Etat. Elle le fait par le dialogue au sein de deux grands corps de littérature intimement liés, la citoyenneté et le transnationalisme, qui se sont penchés sur les questions d’appartenance, d’exclusion, de mobilité et d’accès aux droits chez les migrants transnationaux tout en soulignant la capacité accrue de l’Etat à réguler à la fois les déplacements de personnes et l’accès des migrants aux droits. Cette thèse remet en question trois principes qui influencent la recherche et les programmes d’action publique ayant trait au transnationalisme et à la citoyenneté des migrants, et remet en cause les approches analytiques hégémoniques et méthodologiques qui les sous-tendent. L’étude a été menée à deux niveaux distincts d’analyse empirique et analytique. D’une part, nous examinons les « technologies de la citoyenneté » (Ong 2003, Fujiwara 2008) qui ont été développées par le gouvernement pour transformer l’Argentine en une nation latino-américaine diverse et inclusive pendant la dernière décennie, en nous intéressant particulièrement à la création, par le Kirchnerisme, d’une « nouvelle légalité » pour les Paraguayens, les Boliviens et les Péruviens résidant dans le pays. D’autre part, nous analysons la « dimension horizontale des processus de citoyenneté » (Neveu 2005, Pickus and Skerry 2007, Gagné and Neveu 2009) chez ces migrants dans des aires urbaines, périphériques et rurales du partido de La Plata. Plus spécifiquement, nous examinons dans quelle mesure les conditions socioéconomiques des migrants ont changé suite à leur nouveau statut légal (en tant que ressortissants du MERCOSUR en Argentine, dont les droits sont égaux à ceux des citoyens) et aux politiques de « citoyenneté inclusive » déployées par le gouvernement. Cette thèse se penche particulièrement sur les fondations et l’incarnation (« embodiment ») des droits en examinant comment le nouveau statut légal des migrants se manifeste au quotidien en fonction de a) où ils vivent et travaillent, et b) leur statut social perçu par les autres migrants et non-migrants. D’une part, nous examinons les aires urbaines, périphériques et rurales de La Plata en tant que « zones de souveraineté graduée » (Ong 1999), où des régimes de gouvernementalité locaux spécifiques se sont développés en lien avec l’installation de groupes ethniques souvent distincts, et dont les droits et devoirs diffèrent de ceux d’autres zones. D’autre part, nous étudions la façon dont le statut social est produit à travers les interactions sociales quotidiennes en transposant des distinctions construites socialement telles que race, classe, genre et origine nationale, en systèmes d’exclusion formels (Gregory 2007). Notre analyse ethnographique de ce que nous appelons les « expériences de légalité » des migrants démontre que leur égalité formelle vis-à-vis des Argentins, loin d’être simplement donnée comme un nouveau statut légal uniformément garanti pour tous, est à la fois inégalement vécue par les divers migrants, et différemment respectée dans les zones géographiques dirigées par divers régimes de gouvernementalité (Foucault 1978).
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Màster Oficial en Gestió del Patrimoni Cultural
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Màster Oficial en Construcció i Representació d'Identitats Curturals (CRIC), Curs 2008-2009, Directora: Dra. Nora Elena Catelli Quiroga
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El “Parque Sierra de San Javier” és un espai natural al costat d’ un gran nucli urbà, San Miguel de Tucumán (Argentina). A la Sierra es troba la comuna de San Javier, on s’ ha creat el CIC (Centre Integrador Comunitari). És a partir del CIC que s’ elabora un pla integral que inclou el projecte d’ ecoturisme. Aquest projecte es basa en una gestió de la xarxa de camins existents a la Sierra. Es fa un inventari de cadascun dels camins de la xarxa i s’ analitza cadascun d’ ells amb uns índexs de potencial paisatgístic i interpretatiu i es valora també la seva conservació. A partir d’ aquests valors es planteja un pla d’ actuació de recuperació i manteniment, i un pla d’ actuació turística en el que es millora l’ estat del camí; s’ intal•len panells informatius i senyalització. El projecte conté les fitxes d’ informació de cadascun dels itineraris amb un mapa i amb d’ altres informacions d’ interès pels usuaris dels senders
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Resumen tomado del autor
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Argentina, uno de los países más visitados de América Latina deja al descubierto su marca país " Argentina Late con vos". Un mecanismo de política exterior con el cual el país ha obtenido grandes beneficios económicos.
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El Tratado de Asunción influye sobre las dinámicas migratorias del Cono Sur, y en especial de Argentina. Pues genera unas condiciones económicas especiales en el Cono Sur, que sumadas a los instrumentos institucionales, influyen a su vez jurídicamente, lo que refuerza la migración interregional al País Austral.