5,832 research outputs found
Local up-down asymmetrically shaped equilibrium model for tokamak plasmas
A local magnetic equilibrium model is presented, with finite aspect ratio and
up-down asymmetrically shaped cross section, that depends on eight free
parameters. In contrast with other local equilibria, which provide simple
magnetic-surface parametrizations at the cost of complex poloidal-field flux
descriptions, the proposed model is intentionally built to afford analytically
tractable magnetic-field components. Therefore, it is particularly suitable for
analytical assessments of equilibrium-shaping effects on a variety of
tokamak-plasma phenomena.Comment: 6 pages, 3 figure
ALFRED-DONAT AGACHE URBAN PROPOSAL FOR COSTA DO SOL. FROM THE TERRITORY TO THE CITY.
This paper reviews the development of Costa do Sol, as planned by architect urbanist Alfred-Donat Agache, for Lisbon Region in Portugal. The Plano Expansão Região Oeste de Lisboa (1934-1936) prepared by Agache and requested by Portuguese Minister of Public Works, Duarte Pacheco will be analyzed. This paper aims also to identify the principles and the theoretical foundations that have determined Agache urban vision for Lisbon City and its Territory. Finally, this paper aims to demonstrate that Alfred-Donat Agache methodological framework has applied Frederick Le Play socio-economic scientific approach. Such approach has informed the construction of a ‘civic’ urbanism that will be identified and analyzed. Two main goals seem to have guided Agache work at Costa do Sol: (i) the fully urban analysis of the city, throughout its social, economic, geographic and urban conditions (past and present) and (ii) the need to expose such analysis to the city’s inhabitants. Finally, this paper demonstrates Costa do Sol proposal to testify a comprehensive understanding of three distinct scales: (i) the territory; (ii) the city; (iii) but also the urban form. The acknowledgment of Agache ‘civic’ urban vision requests a public divulgation to allow the building of Good Practice Lessons for contemporary urban planning theory and practice
ALFRED-DONAT AGACHE URBAN PROPOSAL FOR COSTA DO SOL. FROM THE TERRITORY TO THE CITY.
This paper reviews the development of Costa do Sol, as planned by architect urbanist Alfred-Donat Agache, for Lisbon Region in Portugal. The Plano Expansão Região Oeste de Lisboa (1934-1936) prepared by Agache and requested by Portuguese Minister of Public Works, Duarte Pacheco will be analyzed. This paper aims also to identify the principles and the theoretical foundations that have determined Agache urban vision for Lisbon City and its Territory. Finally, this paper aims to demonstrate that Alfred-Donat Agache methodological framework has applied Frederick Le Play socio-economic scientific approach. Such approach has informed the construction of a ‘civic’ urbanism that will be identified and analyzed. Two main goals seem to have guided Agache work at Costa do Sol: (i) the fully urban analysis of the city, throughout its social, economic, geographic and urban conditions (past and present) and (ii) the need to expose such analysis to the city’s inhabitants. Finally, this paper demonstrates Costa do Sol proposal to testify a comprehensive understanding of three distinct scales: (i) the territory; (ii) the city; (iii) but also the urban form. The acknowledgment of Agache ‘civic’ urban vision requests a public divulgation to allow the building of Good Practice Lessons for contemporary urban planning theory and practice
La Fanciulla del West de Giacomo Puccini: a(s) Química(s) de uma Ópera
La Fanciulla del West, a excitante ópera de Giacomo Puccini estreada em 1910 no MET (The Metropolitan Opera
House), em Nova Iorque, é uma história de muitas histórias que proporciona a discussão de uma alargada variedade
de temas. É, assim, uma ópera com um elevado potencial pedagógico.
Neste artigo analisa-se e discute-se o “conteúdo químico” de La Fanciulla, fazendo-se, sempre que oportuno, referência
a outras obras. A análise efectuada revela ouro, etanol, nicotina e, acima de tudo, muito óxido nítrico. Este último é
um gás que, apesar de se revelar absolutamente fundamental na trama de La Fanciulla, não é, todavia, um ingrediente
exclusivo desta ópera. Com efeito, a sua pequena molécula diatómica actua como “gatilho” da acção de uma grande
parte das histórias operáticas… e de muitas histórias da Humanidade
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