Encontrados 7 documentos, a visualizar página 1 de 1

Flywheel Sizing for the Secure Operation of an Isolated Network with a High Lev...

This paper presents the methodology followed for sizing a flywheel energy storage system (FESS), in order to prevent frequency stability problems in an isolated network with an increased production of renewable generation. The analyzed case study is a real isolated power system that includes diesel, wind and photovoltaic solar generation. In the proposed methodology, the flywheel sizing is obtained from perform...

Laparoscopia na decisão da estratégia terapêutica para o casal infértil

OBJETIVO: avaliar a contribuição da laparoscopia diagnóstica na abordagem do casal infértil. MÉTODOS: estudo retrospectivo com análise dos 86 casos consecutivos de pacientes acompanhadas em consulta de esterilidade que foram submetidas à laparoscopia entre Janeiro de 2004 e Dezembro de 2006. Oitenta e duas pacientes tinham realizado histerossalpingografia (HSG) previamente à laparoscopia. Avaliaram-se os achado...

Os portfólios reflexivos na práctica pedagógica

O presente texto reporta-se a um trabalho de investigação que pretendeu explorar as implicações da participação do professor cooperante nos portfólios reflexivos elaborados pelos alunos em contexto de prática pedagógica. Os instrumentos a que nos referimos têm vindo a ser adoptados em algumas instituições de formação inicial de professores, especificamente em contexto de prática pedagógica, enquanto estratégia ...

Avaliação e Controlo de Segurança de Redes Interligadas com Grande Penetração E...

This thesis presents a methodology that, based on automatic learning methods, performs fast and accurate prediction of the dynamic security of interconnected power systems having an increased penetration of wind power, and where the fault ride through capabilities of these power facilities have not been entirely adopted. An algorithm is also presented that, based on the same techniques, identifies, in real-time...

An Hybrid Approach Based on Neural Networks and Regression Tree Models for Fast...

Preliminary Results From The More Advanced Control Advice Project For Secure Op...

Aplicação de Técnicas Híbridas de Aprendizagem Automática para Avaliação Rápida...

This thesis presents a methodology that applies a new automatic learning technique – the hybrid regression trees –, which exploits the functional knowledge about systems behavior. This methodology was specially conceived to exploit the dynamic behavior of isolated power systems with large wind power production. The hybrid regression trees, besides producing fast security classification of the system...