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Linked -- The New Science of Networks by Albert-Laszlo Barabasi

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Al-Qaeda, the terrorist network held accountable for many terrorist attacks, was created over a long period. Driven by religious thinking and intolerance to the social and political system, many were attracted to the radical organization over the years. The network extended bit by bit to become a large web without a spider. Al-Qaeda is so well spread and self-sustaining that even removing Osama bin Laden might not eliminate the danger they create. The terrorist network has become a diverse network that constantly changes its system as per its current plans. It has many secretive nodes that are hard to trace; it is quite challenging to identify the people who comprise its various nodes. Terrorist networks have objectives and links to social networks, which qualifies them to be called systems.Barabasi describes hubs as connectors in scale free networks. The Bacon factor is a popular bit of entertainment trivia, which demonstrates how any Hollywood star can link to actor Kevin Bacon and other actors within six “moves” between people. This network consists of nodes, actors, producers, animators, writers and other related groups. A link is created every time a new video is produced. The Hollywood network thus offers a clear demonstration of a web, with different hubs and nodes, mostly represented by human beings, and links represented by the human relationships. Can we say that human beings are components in some way and that they satisfy a stated idea? The principle of the Hollywood network is to produce films. The public continuously demands new films from Hollywood. However, this seldom happens because the characters rarely act together in all movies. Many work independently minding their own business without affecting other movie productions. The Hollywood network is thus not a system according to system definitions found in the course matter.Random connections depict that nodes in networks share an almost even number of links to other nodes and that the representation of these nodes follows the Poisson distribution. This discovery was made by two mathematicians; Erdos and Renyi. A graphical outlook of networks describes how nodes and hubs obey normal distribution rules. Nodes and hubs form structural components in a scale free network that is robust and vulnerable. A scale free network can easily cope with changes in the environment since the network is decentralized. In case one hub is removed, the network is not
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