This paper proposes a system-level prognostic approach for power electronic systems with slow degradation profiles. Although a model-based approach has been adopted to deal with such multivariable dynamical systems with ...

Nowadays the success of many e-commerce applications, such as on-line banking, depends on their reliability, robustness and security. Designing a web server architecture that keeps these properties under high loads is a ...

Phase-field models for brittle fracture consider smeared representations of cracks, which are described by a continuous field that varies abruptly in the transition zone between unbroken and broken states. Computationally, ...

Charged particles moving through a carbon nanotube may be used to excite electromagnetic modes in the electron gas produced by π and σ orbitals in the cylindrical graphene shell that makes up a nanotube wall [1]. This ...

There are different approaches for the mixed-model assembly-lines sequencing problem. In this paper the goal of minimizing work overload is treated. This approach considers the existence of time windows in each work ...

As EAP lecturers involved in the development of teaching materials and IT (information technology) projects, we have been working on the creation of a web-based learning environment. Our aim is to develop a flexible tool ...

The main contribution of this paper is the proposal of a recent hysteresis dynamic model which is successfully employed within a posited signal modulator. The modulation of signals is a commonly required stage in many ...

O artigo aborda o papel da Iluminação Artificial no planejamento urbano, considerando que, entre as diversas leituras possíveis de cidade, esta pode ser incorporada em sua configuração e estruturação como elemento evidenciador ...

O presente artigo aborda a otimização topológica em problemas de elasticidade plana linear considerando a influência do peso próprio nos esforços em elementos estruturais. Utiliza‐se para este fim uma técnica numérica ...

O light-rail moderno é reconhecido como elemento potenciador do desenvolvimento urbano, podendo ter acção fundamental numa estratégia de sustentabilidade das cidades. A avaliação dos seus impactos no território é algo ...