En búsqueda de efectividad, eficiencia y equidad: las políticas del mercado de trabajo y los instrumentos de su evaluación

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Efetividade dos aparelhos intrabucais de avanço mandibular no tratamento do ronco e da síndrome da apneia e hipopneia obstrutiva do sono (SAHOS): Revisão sistemática

Introduction: The snoring is produced by the vibration of the soft palatum and/or other oropharyngeal tissues, during the air passage, in the breathing function. OSAHS is defined as the closing of 30%, at least, of the nasal/ buccal airway for 10 seconds or more, in spite of existing inspiratory effort, accompanied by oxyhemoglobin de- saturation of 4% or more. Objectives: To evaluate the available scientific evidence about the use of mandibular advancement intraoral appliances in the treatment of the snoring and/or OSAHS. Methodology: Electronic search strategy using predefined key-words and criteria was realized including studies published until October of 2008. It was also used the qualitative evaluation of the articles methodology. Results: Although a significant number of articles has studied this subject, only 7 articles showed methodological quality to be included in this systematic review. Conclusions: The intraoral appliances are widely prescribed for the treatment of snoring and OSAHS as primary therapy and as an alternative to patients who are unable to tolerate the positive airway pressure therapy.

Custos e rentabilidade do milho em função do manejo do solo e da adubação nitrogenada

Agronomic practices that help farmers to raise yield and reduce costs must be studied to ensure agricultural sustainability. Thus, the objective of this study was to analyze economically the effect of soil management and nitrogen fertilization in maize crops. Treatments consisted of a combination of 3 soil management techniques (plow harrows + floating harrows, chisel + floating harrows, and no-tillage), 5 periods of nitrogen fertilization (control - 0 kg ha -1 N; 120 kg ha -1 after sowing (S); 120 kg ha -1 in the V 6 stage; 30 kg ha -1 (S) + 90 kg ha -1 in V 6; 30 kg ha -1 (S) + 45 kg ha -1 in V 4 + 45 kg ha -1 in V 8 The total operating cost (TOC), gross revenue (GR), operating profit (OP), profitability index (PI), break-even yield, and break-even price were estimated. It was concluded that the no-tillage system, after 11 years of management, associated with nitrogen fertilization promotes positive PI and OP, being useful to farmers.

Premisas e instrumentos de la política de innovación: una reflexión desde el caso mexicano

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Infuěncia do relevo na produtividade e custos do harvester

Among the several variables that influence timber harvesting is the slope, which influences the productivity of forest machines. In this experiment the harvester was evaluated technically and economically while cutting and processing eucalyptus activity on different slope classes. The technical analysis included a study of time and movements by the method of continuous time; productivity was determined by the volume in cubic meters of wood processing. The economic analysis included the parameters of operational cost, production cost and energy consumption. The analysis of the data showed that productivity decreased according to the increase of the percent slope inclination, resulting in an effective work hour productivity increase from 18.72 to 39.71 m 3sc, with a mean of operating cost of US$ 78.78 per work hour.

Colaboración entre grupos de trabajo en el marco del plan de acción eLAC: directrices para la identificación de conceptos, estructuras, métodos e instrumentos

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Las políticas de promoción de la competitividad en la Argentina: principales instituciones e instrumentos de apoyo y mecanismos de articulación público-privada

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O novo cenário laboral latino-americano: regulaçao, proteçao e políticas ativas nos mercados de trabalho

Prólogo de Alicia Bárcena

Política pública e instrumentos de financiamiento a las PYMES en Colombia

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Nuevas políticas e instrumentos para el financiamiento de las PYMES en México: oportunidades y desafíos

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Gobernanza corporativa en el Brasil, Colombia y México: la determinación del riesgo en la emisión de instrumentos de deuda corporativa

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Instrumentos para el financiamiento de la sociedad de la información: un marco de referencia para la definición de políticas

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La inclusión del tema indígena en los instrumentos censales: notas para la reflexión

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Las PYMES en el mercado de bienes y servicios ambientales: identificación de oportunidades, políticas e instrumentos: estudios de caso de Argentina, Chile, Colombia y México

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Instrumentos para la evaluación del impacto de acuerdos comerciales internacionales: aplicaciones para países pequeños en América Latina

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