900 B.C.
A postal service is used for governmental purposes in China.
500 B.C.
In ancient Greece trumpets, drums, shouting, beacon, fires, smoke signals, and mirrors are used for message transmission.
4th century B.C.
Aeneas Tacitus, a Greek military scientist and cryptographer, invented an optical communication system that combines water and beacon telegraphy. Torches indicated the beginnings and the ends of a message transmission while water jars were used to transmit the messages. These jars had a plugged standard-size hole drilled on the bottom side and were filled with water. As those who sent and those who received the message unplugged the jars simultaneously, the water drained out. Because the transmitted messages corresponded to water levels, the sender indicated by a torch signal that the appropriate water level had been reached. The methods disadvantage was that the possible messages were restricted to a given code, but as the system was mainly used for military purposes, this was offset by the advantage that it was almost impossible for outsiders to understand the messages unless they possessed the codebook.
With communication separated from transportation, the distant became near. Tacitus' telegraph system was very fast and not excelled until
For further information see Joanne Chang & Anna Soellner, Decoding Device,
3rd century B.C.
Wax tablets are used as writing material in Mesopotamia, ancient Greece, and Etruria.
2nd century B.C.
In China paper is invented.
1st century B.C.
The use of codices instead of scrolls - basically the hardcover book as we know it today - is an essential event in European history. To quote accurately by page number, to browse through pages and to skip chapters - things that were impossible when reading scrolls - becomes possible.
In the computer age we are witnesses to a kind of revival of the scrolls as we scroll up and down a document. The introduction of hypertext possibly marks the beginning of a similar change as has taken place with the substitution of scrolls with codices.
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In 1948 RAND was created at the urging of its original sponsor, the Air Force. After World War II, RAND focused especially on research in national security. Today RAND operates on a broad front, making its research available to public policy makers at all levels, private sector leaders in many industries, and the public at large. RANDs research and analysis aims to: provide practical guidance by making policy choices clear and by addressing barriers to policy implementation; develop solutions to complex problems by bringing researchers in all relevant academic specialities; dissemination of research findings. RAND has more than 500 employees.
Official Organizational Status: Independent Institute
Political Orientation: U.S. Center-right
Scope/Research Areas: RAND specializes in: Foreign relations and diplomacy, security and defense, economic issues, regional studies, science sand technology, labor and human resource development, social issues, education and health and welfare.
Funding Sources: 1998 Budget: US$ 113.5 million. National, local and state government (83 %) and private donations (17 %).
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As the dissemination of ideologies and ideas is crucial to think tanks they apply different strategies to reach as many audiences as possible. Therefore also the concept of education plays an important role. Educational and training programs are aimed at the influencers and future influencers of public opinion and shall lead to the acceptance of think tanks respective social, economical and political ideas. The label "educational activities" thus very often stands for nothing less than the dissemination of ideology.
Most think tanks regularly organize conferences, symposia and seminars to deliver their findings and ideas to a broader audience. RAND for example also runs a Ph.D. program at its Graduate School.
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Think tanks undertake research in very specific public policy areas. Which topics they cover mainly depends on their political and ideological orientation. In any case think tanks produce incredible amounts of "research findings". The crucial aspect usually is not their production, but their distribution. Therefore most think tanks have developed sophisticated dissemination strategies, whose main aim is the communication of their ideas to important audiences. These include members of governmental institutions, policymakers in the executive branch, news media, intellectuals, business men as well as academic and policy communities - in short, everybody, who is involved in shaping public opinion.
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With a budget of US$ 23 million and assets worth US$ 192 million the
Among the 138 corporate donors are: Bell Atlantic,
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It is a system, where letters get converted into numeric characters.
The numbers were not written down and sent but signaled with torches.
for example:
A=1-1
B=1-2
C=1-3
W=5-2
for more information see:
Gaius Julius Caesar (100-44 BC) was a Roman Statesman who came to power through a military career and by buying of votes. His army won the civil war, run over Spain, Sicily and Egypt, where he made Cleopatra a Queen. For reaching even more power he increased the number of senators. But he also organized social measures to improve the people's food-situation. In February 44 BC he did not accept the kingship offered by Marc Anthony, which made him even more popular. One month later he was murdered during a senate sitting.
The Enigma Encryption Machine was famous for its insecurities as for the security that it gave to German ciphers. It was broken, first by the Poles in the 1930s, then by the British in World War II.
The skytale (pronunciation: ski-ta-le) was a Spartan tool for encryption. It consisted of a piece of wood and a leather-strip. Any communicating party needed exactly the same size wooden stick. The secret message was written on the leather-strip that was wound around the wood, unwound again and sent to the recipient by a messenger. The recipient would rewound the leather and by doing this enciphering the message.
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 is concerned with the simulation of human thinking and emotions in information technology. AI develops "intelligent systems" capable, for example, of learning and logical deduction. AI systems are used for creatively handling large amounts of data (as in data mining), as well as in natural speech processing and image recognition. AI is also used as to support
Yahoo AI sites:
MIT AI lab:
Automation is concerned with the application of machines to tasks once performed by humans or, increasingly, to tasks that would otherwise be impossible. Although the term mechanization is often used to refer to the simple replacement of human labor by machines,
Framing is the practice of creating a frame or window within a web page where the content of a different web page can be display. Usually when a link is clicked on, the new web page is presented with the reminders of the originating page.