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Processing XML with Java – a performance benchmark

Over time, XML markup language has acquired a considerable importance in applications development, standards definition and in the representation of large volumes of data, such as databases. Today, processing XML documents in a short period of time is a critical activity in a large range of applications, which imposes choosing the most appropriate mechanism to parse XML documents quickly and efficiently....

Performance analysis of Java APIS for XML processing

Over time, XML markup language has acquired a considerable importance in applications development, standards definition and in the representation of large volumes of data, such as databases. Today, processing XML documents in a short period of time is a critical activity in a large range of applications, which imposes choosing the most appropriate mechanism to parse XML documents quickly and efficiently. When u...

Colored Petri nets in the simulation of ETL standard tasks : the surrogate key ...

ETL (Extract-Transform-Load) systems are formed by processes responsible for the extraction of data from several sources, cleaning and transforming it in accordance with some prerequisites of a data warehouse, and finally loading it in its multidimensional structures. ETL processes are the most complex tasks involved within the development of a Data Warehousing System, being crucial to model them previously so ...

Path planning for complex 3D multilevel environments

The continuous development of graphics hardware is contributing to the creation of 3D virtual worlds with high level of detail, from models of large urban areas, to complete infrastructures, such as residential buildings, stadiums, industrial settings or archaeological sites, to name just a few. Adding virtual humans or avatars adds an extra touch to the visualization pr...

Path planning for complex 3D multilevel environments

The continuous development of graphics hardware is contributing to the creation of 3D virtual worlds with high level of detail, from models of large urban areas, to complete infrastructures, such as residential buildings, stadiums, industrial settings or archaeological sites, to name just a few. Adding virtual humans or avatars adds an extra touch to the visualization providing an enhanced perc...

Pedestrians behavior simulation in real 3D environments

Massive virtual models are one of the most computer graphics pieces required on the Internet especially the ones that simulate three-dimensional urban scenarios. Additionally, the integration of “artificial life” components in these environments, demanding for a virtualization of life involving the static geometry, pioneer in computer games research. This clearly reveals a growing interest fo...

Simulação comportamental de pedestres em ambientes 3D desconhecidos

A disponibilização massiva de modelos virtuais na Internet, representativos da construção de cenários urbanos tridimensionais é, actualmente, uma das tarefas mais requisitadas no domínio da computação gráfica. Tende-se, agora, a evoluir para a inclusão de “vida artificial” nesses ambientes, demandando uma virtualização da “vida” envolvendo a geometria estática, pioneira nos jogos de computador. Esta tendência r...

Application of classification-tree models to characterize the mycobiota of grap...

Classification-tree(CT) models are a simple and robust exploratory data analysis technique that can be used in classification, regressions and summaries of data. They distill complex ecological relationships into simplified rules and identify the species necessary for sample classification on the basis of detailed ecological inventories. The usefulness of this technique to characterize and represent differences...

AQUA : um sistema de informação para análise e a validação de parâmetros de qua...

A fiabilidade de dados disponíveis em domínios como os da hidrologia, das infra-estruturas (hidráulicas e sanitárias) e das variáveis biofísicas e sócio-económicas constitui elemento de base fundamental para a alimentação de qualquer sistema de suporte à decisão numa bacia hidrográfica. Isto significa que a transformação de dados brutos em informação com qualidade controlada, deve ser processada de forma eficie...

Regional differences in the mycoflora of Portuguese wine grapes : a 3 year-study