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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FREEnet is an academic and research network, interconnecting computer networks of research institutes of the Russian Academy of Sciences, universities, colleges, and other research and academic institutions. It was established in 1991 by the N.D. Zelinsky Institute of Organic Chemistry at the Center of Computer Assistance to Chemical Research. It provides its more than 350 members of the academic and educational community with all types of basic Internet services and various information services.
Strategies and Policies
FREEnets general intention is to become a backbone infrastructure providing:
Open networking services for efficient access to the network and information resources located both in Russia and all over the Internet.
Reliable network connectivity for research, academic and educational communities in Russia and abroad.
Worldwide access to science and information resources of the Russian Academy of Sciences, universities and colleges in Russia.
Assistance to the progress of Russian based fundamental research.
Assistance to the development and application of modern information technologies in education.
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The Net connections can be based on wire-line and wireless access technolgies.
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Usually several kinds of network connections are employed at once. Generally speaking, when an E-mail message is sent it travels from the user's computer via copper wires or coaxial cables
Satellite communication
Although facing competition from fiber-optic cables as cost-effective solutions for broadband data transmission services, the space industry is gaining increasing importance in global communications. As computing, telephony, and audiovisual technologies converge, new wireless technologies are rapidly deployed occupying an increasing market share and accelerating the construction of high-speed networks.
Privatization of satellite communication
Until recently transnational satellite communication was provided exclusively by intergovernmental organizations as
Scheduled privatization of intergovernmental satellite consortia:
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When Intelsat began to accumulate losses because of management failures and the increasing market share of fiber-optic cables, this organizational scheme came under attack. Lead by the USA, the Western industrialized countries successfully pressed for the privatization of all satellite consortia they are members of and for competition by private carriers.
As of February 2000, there are 2680 satellites in service. Within the next four years a few hundred will be added by the new private satellite systems. Most of these systems will be so-called Low Earth Orbit satellite systems, which are capable of providing global mobile data services on a high-speed level at low cost.
Because of such technological improvements and increasing competition, experts expect satellite-based broadband communication to be as common, cheap, and ubiquitous as satellite TV today within the next five or ten years.
Major satellite communication projects
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Source: Analysys Satellite Communications Database
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1913 the wheel cipher gets re-invented as a strip
1917
- an AT&T-employee, Gilbert S. Vernam, invents a polyalphabetic cipher machine that works with random-keys
1918 the Germans start using the ADFGVX-system, that later gets later by the French Georges Painvin
- Arthur Scherbius patents a ciphering machine and tries to sell it to the German Military, but is rejected
1919 Hugo Alexander Koch invents a rotor cipher machine
1921 the Hebern Electric Code, a company producing electro-mechanical cipher machines, is founded
1923 Arthur Scherbius founds an enterprise to construct and finally sell his
late 1920's/30's more and more it is criminals who use cryptology for their purposes (e.g. for smuggling). Elizabeth Smith Friedman deciphers the codes of rum-smugglers during prohibition regularly
1929 Lester S. Hill publishes his book Cryptography in an Algebraic Alphabet, which contains enciphered parts
1933-1945 the Germans make the Enigma machine its cryptographic main-tool, which is broken by the Poles Marian Rejewski, Gordon Welchman and Alan Turing's team at Bletchley Park in England in 1939
1937 the Japanese invent their so called Purple machine with the help of Herbert O. Yardley. The machine works with telephone stepping relays. It is broken by a team of
1930's the Sigaba machine is invented in the USA, either by W.F. Friedman or his colleague Frank Rowlett
- at the same time the British develop the Typex machine, similar to the German Enigma machine
1943 Colossus, a code breaking computer is put into action at Bletchley Park
1943-1980 the cryptographic Venona Project, done by the NSA, is taking place for a longer period than any other program of that type
1948 Shannon, one of the first modern cryptographers bringing mathematics into cryptography, publishes his book A Communications Theory of Secrecy Systems
1960's the Communications-Electronics Security Group (= CESG) is founded as a section of Government Communications Headquarters (= GCHQ)
late 1960's the IBM Watson Research Lab develops the Lucifer cipher
1969 James Ellis develops a system of separate public-keys and private-keys
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Intelsat, the world's biggest communication satellite services provider, is still mainly owned by governments, but will be privatised during 2001, like
http://www.intelsat.int/index.htm
Internet exchanges are intersecting points between major networks.
List of the World's Public Internet exchanges (
Supposedly his real name was Aeneas of Stymphalus. He was a Greek military scientist and cryptographer. He invented an optical system for communication similar to a telegraph: the
The PRCA was formed in November 1969 as an association limited by guarantee of up to £5 per member and therefore has no share capital. The PRCA tries to encourage and promote the advancement of companies and firms engaged in public relations consultancy..