World War I ...

With World War I an entire system of ideas how wars work collapsed. Suddenly it was no longer mostly soldiers who had to fight. War became an engagement of every day's life. Everybody got involved.
Propaganda therefore changed as well. The campaigns were no longer temporarily and recent but had to be planned for years. Who failed in organizing it or used the wrong keywords failed. Masters of modern propaganda became the British, whereas the Germans failed completely in the beginning.

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The British Propaganda Campaign in World War I

The British set up a unique system for propaganda, involving GB, the USA and all the colonies. Most different agencies and civilians worked together, the civilians not always knowing about the machinery behind.
During the first years of the war the main goal was to achieve a U.S.-entry to the war on Britain's side of the battle. All propaganda was working on this, which meant to destroy Germany's reputation and create dark stereotypes about them, which was an easy task as the Germans were not only fatally unlucky but also very weak in propaganda. At the same time the U.S.-citizens' opinion about the war had to be influenced. The most promising way to do so was by starting with the men in power.

One of the most beloved tools at that time was the use of atrocity stories; and most popular among the masses were cartoons, furthermore posters, an element perfectioned by the USSR in World War I and II, and movies.

The particular thing was that British propaganda finally had an effect on the German population. Soldiers at the front and people at home received the disinformation messages, mostly pamphlets that had been dropped by aeroplanes or balloons.
Together with the development of the fightings turning against the Germans this kind of propaganda was able to discourage the people and make the German government lose its power of propaganda.
"Allied propaganda had caused a collapse of morale at home." (Taylor, Munitions of the Mind, p. 188)

After all this success it is hardly understandable that the British committed a huge error right after the war, an error that had bad consequences for the next war: being regarded as a tool of war and therefore regarded as inappropriate for times of peace, the propaganda institutions were closed. At about the same time similar ones were built up in Germany - first of all on paper, in Hitler's book Mein Kampf, whose author was an admirer of the British propaganda machine in World War I and decided to perfect it in his own country.

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Expert system

Expert systems are advanced computer programs that mimic the knowledge and reasoning capabilities of an expert in a particular discipline. Their creators strive to clone the expertise of one or several human specialists to develop a tool that can be used by the layman to solve difficult or ambiguous problems. Expert systems differ from conventional computer programs as they combine facts with rules that state relations between the facts to achieve a crude form of reasoning analogous to artificial intelligence. The three main elements of expert systems are: (1) an interface which allows interaction between the system and the user, (2) a database (also called the knowledge base) which consists of axioms and rules, and (3) the inference engine, a computer program that executes the inference-making process. The disadvantage of rule-based expert systems is that they cannot handle unanticipated events, as every condition that may be encountered must be described by a rule. They also remain limited to narrow problem domains such as troubleshooting malfunctioning equipment or medical image interpretation, but still have the advantage of being much lower in costs compared with paying an expert or a team of specialists.

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Open Systems Interconnection (OSI)

Open Systems Interconnection (OSI) is a standard reference model for communication between two end users in a network. It is used in developing products and understanding networks.

Source: Whatis.com

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