Media systems (especially broadcasting) can be classified in two different types:
Public Media Systems: Government control over broadcasting through ownership, regulation, and partial funding of public broadcasting services.
Private Media System: Ownership and control lies in the hands of private companies and shareholders.
Both systems can exist in various forms, according to the degree of control by governments and private companies, with mixed systems (public and private) as the third main kind.
Whereas public media systems are usually at least partially funded by governments, private broadcasting solely relies on advertising revenue. Still also public media systems cannot exclude advertising as a source of revenue. Therefore both types are to a certain degree dependent on money coming in by advertisers.
And this implies consequences on the content provided by the media. As the attraction of advertisers becomes critically important, interests of the advertising industry frequently play a dominant role concerning the structure of content and the creation of environments favorable for advertising goods and services within the media becomes more and more common.
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"Faced with this process of globalization, most governments appear to lack the tools required for facing up to the pressure from important media changes. The new global order is viewed as a daunting challenge, and it most often results in reactions of introversion, withdrawal and narrow assertions of national identity. At the same time, many developing countries seize the opportunity represented by globalization to assert themselves as serious players in the global communications market."
(UNESCO, World Communication Report)
The big hope of the South is that the Internet will close the education gap and economic gap, by making education easier to achieve. But in reality the gap is impossible to close, because the North is not keeping still, but developing itself further and further all the time; inventing new technologies that produce another gap each. The farmer's boy sitting in the dessert and using a cellular telephone and a computer at the same time is a sarcastic picture - nothing else.
Still, the so called developing countries regard modern communication technologies as a tremendous chance - and actually: which other choice is there left?
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Blowfish is a symmetric key block cipher that can vary its length.
The idea behind is a simple design to make the system faster than others.
Martin Hellman was
Large five-sided building in Arlington county, Va., near Washington, D.C., that serves as headquarters of the U.S. Department of Defense, including all three services--Army, Navy, and Air Force. On its completion it was the world's largest office building, covering 34 acres and offering 3,700,000 square feet (343,730 square m) of usable floor space for as many as 25,000 persons, military and civilian.