Competitividad de las MIPYME en Centroamérica: políticas de fomento y mejores prácticas"

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Brazilian external sector so far in the XXIst century

Policies towards the external sector have maintained their basic characteristics since the beginning of the present decade, although emphasis has been given to some specific aspects. Little doubt remains that the positive outcome - at least until recently – has been clearly a result of the country having profited from very favorable circumstances in the international scenario. This article discusses the main features of the external sector of the Brazilian economy, regarding trade flows, foreign investment, the internationalization of Brazilian entrepreneurial groups and the short-term financial requirements in foreign currencies.

Excitons in undoped AlGaAs/GaAs wide parabolic quantum wells

In this work the electronic structure of undoped AlGaAs/GaAs wide parabolic quantum wells (PQWs) with different well widths (1000 and 3000 ) were investigated by means of photoluminescence (PL) measurements. Due to the particular potential shape, the sample structure confines photocreated carriers with almost three-dimensional characteristics. Our data show that depending on the well width thickness it is possible to observe very narrow structures in the PL spectra, which were ascribed to emissions associated to the recombination of confined 1s-excitons of the parabolic potential wells. From our measurements, the exciton binding energies (of a few meV) were estimated. Besides the exciton emission, we have also observed PL emissions associated to electrons in the excited subbands of the PQWs. © 2010 IOP Publishing Ltd.

Regional trade and growth in Asia and Latin America: the importance of productive complementarity

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El comercio entre los países BRICS

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A previdência social e a revisão constitucional: levantamento bibliográfico

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El transporte público urbano bajo en carbono en América Latina. Innovación ambiental de servicios urbanos y de infraestructura: hacia una economía baja en carbono

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El impacto económico de las políticas sociales

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Cuentas ambientales: conceptos, metodologías y avances en los países de América Latina y el Caribe

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Propuesta metodológica para el desarrollo y la elaboración de estadísticas ambientales en países de América Latina y el Caribe

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Compras governamentais: políticas e procedimentos na Organização Mundial de Comércio, União Européia, NAFTA, Estados Unidos e Brasil

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Investimentos externos em serviços e efeitos potenciais da negociação da ALCA

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A decomposition heuristic for the maximal covering location problem

This paper proposes a cluster partitioning technique to calculate improved upper bounds to the optimal solution of maximal covering location problems. Given a covering distance, a graph is built considering as vertices the potential facility locations, and with an edge connecting each pair of facilities that attend a same client. Coupling constraints, corresponding to some edges of this graph, are identified and relaxed in the Lagrangean way, resulting in disconnected subgraphs representing smaller subproblems that are computationally easier to solve by exact methods. The proposed technique is compared to the classical approach, using real data and instances from the available literature. © 2010 Edson Luiz França Senne et al.

Microfinanzas dentro del contexto del sistema financiero colombiano

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Protección del gasto público social a través de la política fiscal: el caso de Chile

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