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Trails of Wind - The architecture of airport runways
Trails of Wind - The architecture of airport runways
Air travel has been in existence for over one hundred years. Since its inception, thousands of airports runways have been built – each one of them designed site specifically, and according to landscape and natural conditions.
Trails of Wind - The architecture of airport runways
Urban spatial order: street network orientation, configuration, and entropy | Applied Network Science | Full Text
Urban spatial order: street network orientation, configuration, and entropy | Applied Network Science | Full Text
Street networks may be planned according to clear organizing principles or they may evolve organically through accretion, but their configurations and orientations help define a city’s spatial logic and order. Measures of entropy reveal a city’s streets’ order and disorder. Past studies have explored individual cases of orientation and entropy, but little is known about broader patterns and trends worldwide. This study examines street network orientation, configuration, and entropy in 100 cities around the world using OpenStreetMap data and OSMnx. It measures the entropy of street bearings in weighted and unweighted network models, along with each city’s typical street segment length, average circuity, average node degree, and the network’s proportions of four-way intersections and dead-ends. It also develops a new indicator of orientation-order that quantifies how a city’s street network follows the geometric ordering logic of a single grid. A cluster analysis is performed to explore similarities and differences among these study sites in multiple dimensions. Significant statistical relationships exist between city orientation-order and other indicators of spatial order, including street circuity and measures of connectedness. On average, US/Canadian study sites are far more grid-like than those elsewhere, exhibiting less entropy and circuity. These indicators, taken in concert, help reveal the extent and nuance of the grid. These methods demonstrate automatic, scalable, reproducible tools to empirically measure and visualize city spatial order, illustrating complex urban transportation system patterns and configurations around the world.
Urban spatial order: street network orientation, configuration, and entropy | Applied Network Science | Full Text
Calculated Risk: May Employment Preview
Calculated Risk: May Employment Preview
On Friday at 8:30 AM ET, the BLS will release the employment report for May. The consensus is for 650 thousand jobs added, and for the unem...
Calculated Risk: May Employment Preview
Geographies of Algorithmic Violence: Redlining the Smart City - Safransky - 2020 - International Journal of Urban and Regional Research - Wiley Online Library
Geographies of Algorithmic Violence: Redlining the Smart City - Safransky - 2020 - International Journal of Urban and Regional Research - Wiley Online Library
City governments are embracing data-driven and algorithmic planning to tackle urban problems. Data-driven analytics have an unprecedented capacity to call urban futures into being. At the same time, ...
Geographies of Algorithmic Violence: Redlining the Smart City - Safransky - 2020 - International Journal of Urban and Regional Research - Wiley Online Library
The Market Tectonics of California Real Estate
The Market Tectonics of California Real Estate
Some residents have left the state, but many others have just moved out of big cities in search of more space and lower prices, creating hot spots in the suburbs and the once-sleepy exurbs.
The Market Tectonics of California Real Estate
Broker Fees Are Here to Stay. Why Do They Even Exist?
Broker Fees Are Here to Stay. Why Do They Even Exist?
Many renters seeking to move in New York City have to pay up to 15 percent of an annual lease to brokers — regardless of whether they helped find the apartment. After a legal battle, the state affirmed this week that broker fees were legal.
Broker Fees Are Here to Stay. Why Do They Even Exist?
The State of Household Debt in America
The State of Household Debt in America
Since 2003, U.S. household debt has doubled to over $14.5 trillion. We break down the components of this colossal figure.
The State of Household Debt in America
Cities Need Housing. Parking Requirements Make it Harder.
Cities Need Housing. Parking Requirements Make it Harder.
California was a pioneer in minimum parking mandates, which drive up housing costs and climate emissions. Now the state is ready to lead the nation in reclaiming our cities from parking lots.
Cities Need Housing. Parking Requirements Make it Harder.