Acceso a los mercados internacionales de capital y desarrollo de instrumentos financieros: el caso de México

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Oferta de bienes y servicios ambientales para satisfacer las necesidades de micro y pequeñas empresas: el caso mexicano

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Temporeras de la agroexportación en Chile: tensiones y desafíos asociados a la relación entre la vida laboral y familiar

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Los recursos naturales en los tratados de libre comercio con Estados Unidos

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Cooperación e integración energética en América Latina y el Caribe

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La seguridad energética de América Latina y el Caribe en el contexto mundial

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Puntos de conflicto de la cooperación e integración energética en América Latina y el Caribe

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El papel de la OPEP en el comportamiento del mercado petrolero internacional

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Tendencias recientes del mercado internacional del petróleo

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Situación y tendencias de la minería aurífera y del mercado internacional del oro

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Production strategies for short term grow-out of the Amazon River prawn Macrobrachium amazonicum (Heller 1862) in ponds

The aim of this study was to evaluate the effect of stocking ponds using graded and ungraded juveniles and performing drained and combined harvesting on the production of M. amazonicum. A randomized completed-blocks design with 4 treatments (farming strategies) and 3 replicates was used. Treatments were: Upper size-graded juveniles, Lower size-graded juveniles, Ungraded juveniles, all with total drained harvesting, and Combined Harvesting (ungraded juveniles). Twelve earthen ponds were stocked at 40 juveniles.m -2, according to the treatment. After 3.5 months prawns were completely harvested. Lower size-graded prawns showed smaller average weight (3.37 ± 0.25 g) than upper size-graded (4.03 ± 0.40 g) and ungraded ones (3.80 ± 0.16 g). Survival percentage varied from 68 ± 9 to 76 ± 10, productivity was slightly higher than 1,000 kg.ha -1 and apparent feed conversion rate varied from 3.0 ± 0.7 to 3.7 ± 1.3. These parameters did not differ among the farming strategies. The best strategy for short term grow-out M. amazonicum in earthen ponds is stocking ungraded juveniles and performing total harvesting by draining ponds at the end of rearing cycle. Grading juveniles before stocking and selective-harvesting managements are not advantageous because they increase costs and do not improve any production parameter.

El proceso de privatizaciones en el Perú durante el período 1991-2002

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Concertación nacional y planificación estratégica: elementos para un nuevo consenso en América Latina""

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El cambio estructural de las telecomunicaciones y la inversión: el caso de México

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Mobile application as a tool for urban traffic data collection and generation to advanced traveler information systems using Wi-Fi networks available in urban centers

This paper presents an Advanced Traveler Information System (ATIS) developed on Android platform, which is open source and free. The developed application has as its main objective the free use of a Vehicle-to- Infrastructure (V2I) communication through the wireless network access points available in urban centers. In addition to providing the necessary information for an Intelligent Transportation System (ITS) to a central server, the application also receives the traffic data close to the vehicle. Once obtained this traffic information, the application displays them to the driver in a clear and efficient way, allowing the user to make decisions about his route in real time. The application was tested in a real environment and the results are presented in the article. In conclusion we present the benefits of this application. © 2012 IEEE.