Geografia
Do ovo à cidade
Uma interessante analogia entre o crescimento e expansão das cidades e .... o ovo. Uma forma de representar de forma significativa a evolução das cidades ao longo de vários milénios, que se assemelha a um ovo cozido, ao ovo estrelado e ao ovo mexido.
"From its origins in the mists of time up until fairly recently, the urban form resembled a hard-boiled egg. The city was a dense, compact centre, protected by defensive walls from the evils of the wider world. (...) the rapid growth of population and industry around that time, caused cities to expand rapidly. This is the poached-egg model: the core retains its ancient function as the place of reference and the seat of power, but it is surrounded by expanding rings of residential and industrial areas, and infrastructural networks providing utilities and transportation. But the centre cannot hold. Like a star at the end of its life, the core of the city collapses under the weight of its own sprawl. The car has made it much easier (and cheaper) to live, work and shop near the ring roads than in the choked middle of town. This, the scrambled-egg model, is also the most relevant type of urban development today. And what type of egg will the city of the future resemble? This will probably depend on the future cost of mobility, which might become too prohibitive to sustain the present, scrambled-eggs model." (Stange Maps)
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Livros Para Downloadlivros Para Download: "cities And Climate Change: Global Report On Human Settlements 2011 " E " State Of The World's Cities 2010/2011 - Cities For All: Bridging The Urban Divide"
Cities and Climate Change reviews the linkages between urbanization and climate change, two of the greatest challenges currently facing humanity in the 21st Century, and whose effects are converging in dangerous ways. It illustrates the significant contribution...
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O Centro De Gravidade Económico Do Mundo
Fonte: The Economist "IT IS not exactly news that the world's economic centre of gravity is shifting east. But it is striking how fast this seems to be happening. In a new study on the economic impact of urbanisation the McKinsey Global Institute,...
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Qual O Limite Para O Crescimento Da Cidade?
"The world is in the throes of a sweeping population shift from the countryside to the city. Underpinning this transformation are the economies of scale that make concentrated urban centers more productive. This productivity improvement from urbanization...
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Crescimento Das Cidades
How big cities can grow? In a world of rising temperatures and sea levels, and of rapidly diminishing non-renewable fuel sources, the idea of such compact cities appears attractive. However this argument is never straightforward and might even be flawed....
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Transportes Urbanos Para Um Futuro Sustentável
"They have begun to realize that urban transport systems based on a combination of rail lines, bus lines, bicycle pathways, and pedestrian walkways offer the best of all possible worlds in providing mobility, low-cost transportation, and a healthy urban...
Geografia