We've seen that in different places," said Sen. John Cornyn (R-Tex)., the No. 2 in GOP leadership, explaining why a system of technology, infrastructure and personnel is preferable to a physical wall.
But a city it is, with a massive system of infrastructure and spatial organisation that is no less impressive for being temporary.
The imperial court required a large quantity of goods and a great system of infrastructure was realized to support the increasing maritime traffic from the Levant to the city of Ravenna [Figure 1b].
By the 1920s, America had developed a better system of infrastructure.
So monitoring an entire system of infrastructure can be quite costly, and collecting clean data can be incredibly time-consuming.
Nowadays, the increase of interdependencies among different Critical Infrastructures (CI) makes it more and more difficult to protect without using a systemic approach that considers a single infrastructure as part of a complex system of infrastructures.
Today, complex projects are redesigning the space in a mixité dimension, replacing the large industrial platforms with a complex system of infrastructures, housing, research institutes, academies, wholesalers and retailers, restaurants and catering.
During the next two centuries, we relied on government to establish a system of compulsory public education, infrastructure for everything from running water to the electric grid, and old-age pensions, along with tax systems to pay for it all.
A special and holistic approach is needed that captures aggregate attributes and emergent behaviors of the complex system of infrastructure systems in a region.
Many of those goals are accomplished with public key infrastructure, a system of specialized organizations and computerized means for providing electronic certificates that authenticate firms and, if desired, individuals; provide the encryption and decryption keys for communication; and furnish the protocols (algorithms) for secure communication.
