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Biometric technologies In what follows there is a brief description of the principal biometric technologies, whose respective proponents - producers, research laboratories, think tanks - mostly tend to claim superiority over the others. A frequently used definition of "biometric" is that of a "unique, measurable characteristic or trait of a human being for automatically recognizing or verifying identity" ( All biometric technologies are made up of the same basic processes: 1. A sample of a biometric is first collected, then transformed into digital information and stored as the "biometric template" of the person in question. 2. At every new identification, a second sample is collected and its identity with the first one is examined. 3. If the two samples are identical, the persons identity is confirmed, i.e. the system knows who the person is. This means that access to the facility or resource can be granted or denied. It also means that information about the persons behaviour and movements has been collected. The system now knows who passed a certain identification point at which time, at what distance from the previous time, and it can combine these data with others, thereby appropriating an individual's data body. |
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Znet ZNet provides forum facilities for online discussion and chatting on various topics ranging from culture and ecology to international relations and economics. ZNet also publishes daily commentaries and maintains a Web-zine, which addresses current news and events as well as many other topics, trying to be provocative, informative and inspiring to its readers. Strategies and Policies Daily Commentaries: Znet's commentaries address current news and events, cultural happenings, and organizing efforts, providing context, critique, vision, and analysis, but also references to or reviews of broader ideas, new books, activism, the Internet, and other topics that strike the diverse participating authors as worthy of attention. Forum System: Znet provides a private (and soon also a public) forum system. The fora are among others concerned with topics such as: activism, cultural, community/race/religion/ethnicity, ecology, economics/class, gender/kinship/sexuality, government/polity, international relations, ParEcon, vision/strategy and popular culture. Each forum has a set of threaded discussions, also the fora hosted by commentary writers like Chomsky, Ehrenreich, Cagan, Peters and Wise. ZNet Daily WebZine: ZNet Daily WebZine offers commentaries in web format. Z Education Online (planned): The Z Education Online site will provide instructionals and courses of diverse types as well as other university-like, education-aimed features. |
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Timeline Cryptography - Introduction Besides oral conversations and written language many other ways of information-transport are known: like the bush telegraph, drums, smoke signals etc. Those methods are not cryptography, still they need en- and decoding, which means that the history of language, the history of communication and the history of cryptography are closely connected to each other The timeline gives an insight into the endless fight between enciphering and deciphering. The reasons for them can be found in public and private issues at the same time, though mostly connected to military maneuvers and/or political tasks. One of the most important researchers on Cryptography through the centuries is |
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Backbone Networks Backbone networks are central networks usually of very high bandwidth, that is, of very high transmitting capacity, connecting regional networks. The first backbone network was the |
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Immanuel Wallerstein Immanuel Wallerstein (* 1930) is director of the Fernand Braudel Center for the Study of Economies, Historical Systems, and Civilizations. He is one of the most famous sociologists in the Western World. With his book The Modern World-System: Capitalist Agriculture and the Origins of the European World-Economy in the Sixteenth Century (1976), which led to the expression World-System Theory about centers, peripheries and semi-peripheries in the capitalist world system, he did not only influence a whole generation of scientists, but this theory seems to get popular again, due to globalization. |
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Integrated circuit Also called microcircuit, the integrated circuit is an assembly of electronic components, fabricated as a single unit, in which active semiconductor devices ( |
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