11. The "'daily urban system "'is the area around a city, in which daily commuting occurs. 12. She also co-directs the Spatial Integration Laboratory for Urban Systems at the University of Pennsylvania. 13. He took a job at IBM, where he ended up studying the management of urban systems . 14. Accordingly, electric traction is used on urban systems , lines with high traffic and for high-speed rail. 15. Villages Kobylanka are parts of the urban system . 16. Those benefits are especially important for disadvantaged students in urban systems where dropout rates are high. 17. The urban system operates yellow cars, including some acquired second-hand from Copenhagen, on largely street track. 18. Contrary to common belief, urban systems can be more environmentally sustainable than rural or suburban living. 19. But there were also rectangular-scale urban systems . 20. In Alexandria, both the urban system and the express routes to eastern suburbs are still in operation.
