~ 1900 BC: Egyptian writers use non-standard
1500 an enciphered formula for the production of pottery is done in Mesopotamia
parts of the Hebrew writing of Jeremiah's words are written down in "
4th century
487 the Spartans introduce the so called "
170
50-60
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some essential definitions in the field of cryptography are:
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"Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break." (David Kahn)
The variants of encryption systems are endless.
For deciphering there exists always the same game of trial and error (first guessing the encryption method, then the code). A help to do so is pruning. Once, after a more or less long or short period a code/cipher breaks. Monoalphabetic ciphers can be broken easily and of course are no longer used today but for games.
for further information on codes and ciphers etc. see:
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The advertising industry is dominated by three huge advertising networks, which offer their services throughout the world. Gross income of the three leading agencies is twice as much, as the one of places four to ten.
Table: World's Top 10 Advertising Organizations 1999
(figures in millions of U.S. dollars)
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Table: Top 10 Global Marketers 1998
(figures in millions of U.S. dollars)
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On the other hand the three biggest advertisers only spend about US$ 2 millions less than places four to ten together. Whereas money spent on advertising in traditional media comes from very diverse categories, companies offering computer hard- and software, peripherals or Internet services mainly pay for on-line advertisements.
Table: Top 10 Internet Advertisers 1998
(figures in millions of U.S. dollars)
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Source: Advertising Age
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Although Internet advertising only really started in 1994, revenues showed a steady and fast growth. In 1997 US$ 906.5 million were spent on on-line advertising. Compared with advertising revenue for the television industry in equivalent dollars for its third year, the Internet was slightly ahead, at US$ 907 million compared to television's US$ 834 million. 1998 on-line advertising grew by 112 percent to US$ 1.92 billion in revenues, and is on track to hit US$ 4 billion in 1999, which would put Internet advertising at about 2 percent of the U.S. ad market.
Table: Spending on On-Line Advertising by Category
(first quarter 1999)
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Table: Types of On-Line Advertising
(first quarter 1999)
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Source: Internet Advertising Bureau (IAB).
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With new sponsorship models being developed, even further influence over content from the corporate side can be expected. Co-operating with
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The Internet Software Consortium (ISC) is a nonprofit corporation dedicated to the production of high-quality reference implementations of Internet standards that meet production standards. Its goal is to ensure that those reference implementations are properly supported and made freely available to the Internet community.
http://www.isc.org
Amazon.Com was one of the first online bookstores. With thousands of books, CDs and videos ordered via the Internet every year, Amazon.Com probably is the most successful Internet bookstore.
Massive online retail bookstore housing more than a million titles. Includes a book recommendation "personalizer,", a comprehensive list of The New York Times bestsellers, a "live" community events calendar with a daily survey and several forums, "highlighted" books from 19 subject areas, browsable categories such as antiques, ethnic studies, and pop culture, Books in the News, and weekly features such as reviews, excerpts, recommendations, interviews, events, "roundups" of popular titles, and quizzes.
Professor of theoretical psychology at the University of Bamberg, Germany. He defends the idea that the soul can be simulated by an information system. Artificial life will be able to reproduce itself and will therefore need a right to life just as biological life. Artificial life will also be able to feel pain, and there will have to be a new form of interaction between humans and artificial life forms. Dörner is conducting a research project on human action in situations of insecurity and complexity and has published "The logic of failure. Why things go wrong and what we can do to make them right" as well as "The Logic of Failure: Recognizing and avoiding error in complex situations."
The World Intellectual Property Organization is one of the specialized agencies of the United Nations (UN), which was designed to promote the worldwide protection of both industrial property (inventions, trademarks, and designs) and copyrighted materials (literary, musical, photographic, and other artistic works). It was established by a convention signed in Stockholm in 1967 and came into force in 1970. The aims of WIPO are threefold. Through international cooperation, WIPO promotes the protection of intellectual property. Secondly, the organization supervises administrative cooperation between the Paris, Berne, and other intellectual unions regarding agreements on trademarks, patents, and the protection of artistic and literary work and thirdly through its registration activities the WIPO provides direct services to applicants for, or owners of, industrial property rights.