Summarize the application of Cellular Automata to the research of urban system. It includes: simulation of complexity of urban space, research on urban problems and model building of urban system.

对元胞自动机在城市系统研究中的应用进行总结，包括城市空间复杂性模拟、城市问题研究以及城镇体系模型等。

youdao

Cellular automaton is a mathematical model in which time, space and variables are all discrete.

元胞自动机是一种时间、空间和变量均离散的数学模型。

youdao

Using the interaction between cellular automata, a cryptography system based on the coupled toggle cellular automata is proposed to enlarge the key space and the strength of the system.

利用元胞自动机之间的相互作用，提出耦合触发元胞自动机的加密技术，增加密钥空间和增强密码系统的强度。

youdao

That means Sprint has money to do the other things Hesse has fantasized about in terms of rolling up the other smaller players in the cellular space even as it waits for the FCC to rule on this change of control at Sprint.

FORBES: Softbank's Brilliant Buy One (Sprint), Get One Free Deal (Clearwire)

The VoIP provider wants to extend Wind's network network across the country while moving subscribers over to Fongo within the space of a year, theoretically creating a perfect match between cheap cellular access and free internet calling.

ENGADGET

Let us explain: Apparently some regions in the South and West aren't as wired as midtown Manhattan, so a company called Space Data found a way to make money by repeatedly launching weather balloons with cellular transmitters called SkySites, and charging what must be astronomical fees for getting your cell-on in the boonies.

ENGADGET: Cash-in on your geocaching skillz