Web semântica: uma análise focada no uso de metadados

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Organização do conhecimento em bibliotecas digitais de Teses e Dissertações: análise da aplicabilidade das teorias macroestruturais para categorização de áreas de assunto

Pós-graduação em Ciência da Informação - FFC

Arquitetura da informação para biblioteca digital personalizável

Pós-graduação em Ciência da Informação - FFC

Modelo para análise de usabilidade de periódico eletrônico

Pós-graduação em Ciência da Informação - FFC

Serviço de referência digital: uma análise apoiada em agentes de interface

Pós-graduação em Ciência da Informação - FFC

Sistemas de informações geográficas: elementos para o desenvolvimento de bibliotecas digitais geográficas distribuídas

Pós-graduação em Ciência da Informação - FFC

Investigando o processo ensino-aprendizagem de LE in-tandem: aprendizagem da língua francesa em contexto digital

Pós-graduação em Estudos Linguísticos - IBILCE

Ressonâncias da inclusão digital por Internet Wi-Fi, na configuração do estilo do lazer

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

The digital economy for structural change and equality

Includes bibliography.

Análise dos sprays de jatos de injetores de motor foguete utilizando um sistema de processamento digital de imagens

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Políticas públicas para el desarrollo digital: Avances y desafíos de América Latina y el Caribe

eLAC2007 - El Plan de Acción para la Sociedad de la Información en América Latina y el Caribe. Políticas Públicas para el desarrollo digital: Avances y desafíos de América Latina y el Caribe - CEPAL. Sociedad de la Información y Gobernabilidad: El binomio de la esperanza – Organización de Estados Americanos (OEA) Grado de preparación, capacidad y cooperación en materia de gobierno electrónico: Apoyo de UNDESA para la ejecución del eLAC2007. Acceso universal a las telecomunicaciones: la perspectiva del Banco Mundial Preparar a América Latina y el Caribe para la difusión de la nueva generación de tecnologías de la información y de las comunicaciones - CEPAL. Consolidar el desarrollo y la difusión de las TIC en los países ALC: un compromiso sólido y duradero del Banco Interamericano del Desarrollo (BID). Retos en el seguimiento del eLAC2007 - OSILAC. OSILAC – El Observatorio para la Sociedad de la Información en Latinoamérica y el Caribe.

Derechos de la infancia en la era digital

La brecha digital exacerba desigualdades en el acceso a información y conocimiento, socialización con pares, visibilidad y manejo de herramientas básicas para desempeñarse en la sociedad. Reducir esta brecha permite sinergias virtuosas de inclusión social y cultural entre niños, niñas y adolescentes, con impactos positivos en el desarrollo de capacidades y generación de oportunidades para toda su vida. Si bien las nuevas generaciones están conectadas y sus miembros son nativos digitales, persisten desigualdades entre grupos socioeconómicos, aun cuando se han reducido gracias a los programas de conectividad en las escuelas públicas de la región. El artículo central de esta edición de Desafíos aborda –con información actualizada– las brechas y los avances en esta materia. El acceso es solo un primer paso; luego, es necesario proteger a niños y adolescentes contra los riesgos de la conectividad y potenciar los aprendizajes pertinentes y plenos de sentido, promoviendo usos más articulados con el currículo educativo. Por último, el artículo plantea que hay que vincular las políticas de conectividad con el cumplimiento de los derechos de la infancia en el marco de la Convención sobre los Derechos del Niño. Junto al artículo central, y como es habitual, se informa de encuentros y conferencias en la región durante el año y de publicaciones recientes en la materia. También se presentan buenas prácticas en el Perú para reducir brechas de género y una iniciativa conjunta de los operadores móviles y el UNICEF para proteger a la infancia en la era digital. En Puntos de vista se incluye la opinión de especialistas acerca de la potencialidad de las TIC como una herramienta a tener en cuenta para el ejercicio o vulneración de los derechos de niños, niñas y adolescentes.

Children’s rights in the digital age

The digital divide exacerbates inequalities in access to information and knowledge, making it more difficult to socialize with peers and limiting awareness of and the ability to use basic tools for life in society. Reducing this gap sets in motion virtuous synergies of social and cultural inclusion for children and adolescents, facilitating skills development and generating lifelong opportunities. Although the younger generations are connected digital natives, inequalities persist among socioeconomic groups, though these have been tempered by connectivity programmes in public schools in the region. The main article of this edition of Challenges uses current information to examine the progress made and the gaps that remain in this area. Providing children and adolescents with access is merely a first step. They then need to be protected from the risks associated with information and communications technologies (ICTs), which must be harnessed for purposes of meaningful learning, promoting uses that are more in line with the educational curriculum. Lastly, the article posits that connectivity policies must be linked to the fulfilment of children’s rights in the framework of the Convention on the Rights of the Child. As is customary, this issue also contains information on meetings and conferences held in the region during the year and recent publications in this field. Mention is also made of good practices from Peru in reducing gender gaps and a joint initiative between mobile operators and the United Nations Children’s Fund (UNICEF) to protect children in the digital age. Viewpoints includes expert opinion on the potential of ICTs as tools that can facilitate the exercise of the rights of children and adolescents, but also lead to violations of these rights.

Digital soil mapping: evaluation of sampling systems for soil surveys and refinement of soil maps at lower cost using legacy data

In soil surveys, several sampling systems can be used to define the most representative sites for sample collection and description of soil profiles. In recent years, the conditioned Latin hypercube sampling system has gained prominence for soil surveys. In Brazil, most of the soil maps are at small scales and in paper format, which hinders their refinement. The objectives of this work include: (i) to compare two sampling systems by conditioned Latin hypercube to map soil classes and soil properties; (II) to retrieve information from a detailed scale soil map of a pilot watershed for its refinement, comparing two data mining tools, and validation of the new soil map; and (III) to create and validate a soil map of a much larger and similar area from the extrapolation of information extracted from the existing soil map. Two sampling systems were created by conditioned Latin hypercube and by the cost-constrained conditioned Latin hypercube. At each prospection place, soil classification and measurement of the A horizon thickness were performed. Maps were generated and validated for each sampling system, comparing the efficiency of these methods. The conditioned Latin hypercube captured greater variability of soils and properties than the cost-constrained conditioned Latin hypercube, despite the former provided greater difficulty in field work. The conditioned Latin hypercube can capture greater soil variability and the cost-constrained conditioned Latin hypercube presents great potential for use in soil surveys, especially in areas of difficult access. From an existing detailed scale soil map of a pilot watershed, topographical information for each soil class was extracted from a Digital Elevation Model and its derivatives, by two data mining tools. Maps were generated using each tool. The more accurate of these tools was used for extrapolation of soil information for a much larger and similar area and the generated map was validated. It was possible to retrieve the existing soil map information and apply it on a larger area containing similar soil forming factors, at much low financial cost. The KnowledgeMiner tool for data mining, and ArcSIE, used to create the soil map, presented better results and enabled the use of existing soil map to extract soil information and its application in similar larger areas at reduced costs, which is especially important in development countries with limited financial resources for such activities, such as Brazil.