Acessing the Internet

The Net connections can be based on wire-line and wireless access technolgies.

Wire-line access

Wire-less access

copper wires

Satellites

coaxial cables

mobile terrestrial antennas

electric power lines

fixed terrestrial antennas

fiber-optic cables







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 ISDN lines, etc., to an Internet Service Provider, from there, via fibre-optic cables, to the nearest Internet exchange, and on into a backbone network, tunneling across the continent und diving through submarine fibre-optic cables across the Atlantic to another Internet exchange, from there, via another backbone network and across another regional network to the Internet Service Provider of the supposed message recipient, from there via cables and wires of different bandwidth arriving at its destination, a workstation permanently connected to the Internet. Finally a sound or flashing icon informs your virtual neighbor that a new message has arrived.

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 Intelsat, Intersputnik and Inmarsat.

Scheduled privatization of intergovernmental satellite consortia:

Satellite consortia

Year of foundation

Members

Scheduled date for privatization

Intelsat

1964

200 nations under the leadership of the USA

2001

Intersputnik

1971

23 nations under the leadership of Russia

?

Inmarsat

1979

158 nations (all members of the International Maritime Organization)

privatized since 1999

Eutelsat

1985

Nearly 50 European nations

2001



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

Project name

Main investors

Expected cost

Number of satellites

Date of service start-up

Astrolink

Lockheed Martin, TRW, Telespazio, Liberty Media Group

US$ 3.6 billion

9

2003

Globalstar

13 investors including Loral Space & Communications, Qualcomm, Hyundai, Alcatel, France Telecom, China Telecom, Daimler Benz and Vodafone/Airtouch

US$ 3.26 billion

48

1998

ICO

57 investors including British Telecom, Deutsche Telecom, Inmarsat, TRW and Telefonica

US$ 4.5 billion

10

2001

Skybridge

9 investors including Alcatel Space, Loral Space & Communications, Toshiba, Mitsubishi and Sharp

US$ 6.7 billion

80

2002

Teledesic

Bill Gates, Craig McCaw, Prince Alwaleed Bin Talal Bin Abdul Aziz Alsaud, Abu Dhabi Investment Company

US$ 9 billion

288

2004


Source: Analysys Satellite Communications Database

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Biometrics applications: privacy issues

All biometric technologies capture biometric data from individuals. Once these date have been captured by a system, they can, in principle, be forwarded to other locations and put to many different uses which are capable of compromising on an individuals privacy.

Technically it is easy to match biometric data with other personal data stored in government or corporate files, and to come a step closer to the counter-utopia of the transparent citizen and customer whose data body is under outside control.

While biometric technologies are often portrayed as protectors of personal data and safeguards against identity theft, they can thus contribute to an advance in "Big Brother" technology.

The combination of personalised data files with biometric data would amount to an enormous control potential. While nobody in government and industry would admit to such intentions, leading data systems companies such as EDS (Electronic Data Systems; http://www.eds.com) are also suppliers of biometric systems to the intelligence agencies of government and industry.

Biometric technologies have the function of identification. Historically, identification has been a prerequisite for the exercise of power and serves as a protection only to those who are in no conflict with this power. If the digitalisation of the body by biometric technologies becomes as widespread as its proponents hope, a new electronic feudal system could be emerging, in which people are reduced to subjects dispossessed of their to their bodies, even if these, unlike in the previous one, are data bodies. Unlike the gatekeepers of medieval towns, wear no uniforms by they might be identified; biometric technologies are pure masks.

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Problems of Copyright Management and Control Technologies

Profiling and Data Mining

At their most basic copyright management and control technologies might simply be used to provide pricing information, negotiate the purchase transaction, and release a copy of a work for downloading to the customer's computer. Still, from a technological point of view, such systems also have the capacity to be employed for digital monitoring. Copyright owners could for example use the transaction records generated by their copyright management systems to learn more about their customers. Profiles, in their crudest form consisting of basic demographic information, about the purchasers of copyrighted material might be created. Moreover copyright owners could use search agents or complex data mining techniques to gather more information about their customers that could either be used to market other works or being sold to third parties.

Fair Use

Through the widespread use of copyright management and control systems the balance of control could excessively be shifted in favor of the owners of intellectual property. The currently by copyright law supported practice of fair use might potentially be restricted or even eliminated. While information in analogue form can easily be reproduced, the protection of digital works through copyright management systems might complicate or make impossible the copying of material for purposes, which are explicitly exempt under the doctrine of fair use.

Provisions concerning technological protection measures and fair use are stated in the DMCA, which provides that "Since copying of a work may be a fair use under appropriate circumstances, section 1201 does not prohibit the act of circumventing a technological measure that prevents copying. By contrast, since the fair use doctrine is not a defense e to the act of gaining unauthorized access to a work, the act of circumventing a technological measure in order to gain access is prohibited." Also the proposed EU Directive on copyright and related rights in the information society contains similar clauses. It distinguishes between the circumvention of technical protection systems for lawful purposes (fair use) and the circumvention to infringe copyright. Yet besides a still existing lack of legal clarity also very practical problems arise. Even if the circumvention of technological protection measures under fair use is allowed, how will an average user without specialized technological know-how be able to gain access or make a copy of a work? Will the producers of copyright management and control systems provide fair use versions that permit the reproduction of copyrighted material? Or will users only be able to access and copy works if they hold a digital "fair use license" ("fair use licenses" have been proposed by Mark Stefik, whereby holders of such licenses could exercise some limited "permissions" to use a digital work without a fee)?

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Basics: Acquisition of Copyright

The laws of almost all countries provide that protection is independent of any formalities. Copyright protection then starts as soon as the work is created.

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General Schwarzkopf

General H. Norman Schwarzkopf (* 1934) followed in his father's footsteps at the United States Military Academy at West Point.
In 1965 he applied to join the troops in Vietnam. For the next 20 years Schwarzkopf worked on his career. As Commander in Chief of the U.S. Central Command, he led U.S. and allied forces in the Gulf War (Operations Desert Shield and Desert Storm). He retired from the Army in 1992 and wrote his autobiography.

For a picture see: http://www.jesterbook.com/sections/5a_mom/gallery/schwarzkopf.htm

http://www.jesterbook.com/sections/5a_mom/gal...
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Joseph Stalin

Joseph Stalin (1879-1953):
After Lenin's death he took over and became a dictator without any limits of power. Everyone who dared to talk or act against him or was in suspicion of doing so, got killed. Millions were murdered. His empire was one made out of propaganda and fear. As long as he was in power his picture had to be in every flat and bureau. Soon after his death the cult was stopped and in 1956 the De-Stalination was started, though he was partly rehabilitated in 1970.

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to decipher/decode

to put the ciphers/codes back into the plaintext

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IDEA

IDEA is another symmetric-key system. It is a block cipher, operating on 64-bit plaintext blocks, having a key-length of 128 bits.

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Kosov@

The "word" Kosov@ is a compromise between the Serb name KosovO and the Albanian KosovA. It is mostly used by international people who want to demonstrate a certain consciousness about the conflict including some sort of neutrality, believing that neither the one side nor the other (and maybe not even NATO) is totally right. Using the word Kosov@ is seen as a symbol of peace.

For more explanations (in German) see: http://www.zivildienst.at/kosov@.htm

http://www.zivildienst.at/kosov@.htm
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