Since the 1970s there had been a growing trend towards the use of computer programs in manufacturing companies. Especially functions related to design and production, but also business functions should be facilitated through the use of computers.
Accordingly the CAD/CAM technology, related to the use of computer systems for design and production, was developed. CAD (computer-aided design) was created to assist in the creation, modification, analysis, and optimization of design. CAM (computer-aided manufacturing) was designed to help with the planning, control, and management of production operations. CAD/CAM technology, since the 1970s, has been applied in many industries, including machined components, electronics products, equipment design and fabrication for chemical processing.
To enable a more comprehensive use of computers in firms the
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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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Protecting speech on the global data networks attracts an increasing attention. The efforts and the corresponding abilities of governmental authorities, corporations and copyright enforcement agencies are countered by similar efforts and abilities of researchers and engineers to provide means for anonymous and uncensored communication, as Freenet, Free Haven and Publius. All three of them show a similar design. Content is split up and spread on several servers. When a file is requested, the pieces are reassembled. This design makes it difficult to censor content. All of these systems are not commercial products.
The most advanced system seems to be Publius. Because of being designed by researchers and engineers at the prestigious
For more information on Publius, see John Schwartz, Online and Unidentifiable? in: The Washington Post, June 30, 2000,
Freenet web site:
Free Haven web site:
Publius web site:
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IGC's vision is to actively promote change toward a healthy society, which is founded on the principals of social justice, broadly shared economic opportunity, a robust democratic process, and sustainable environmental practices. IGC believes that healthy societies rely fundamentally on respect for individual rights, the vitality of communities and diversity. IGC's aim is to advance the work of progressive organizations and individuals for peace justice economic opportunity, human rights, democracy and environmental sustainability through strategic use of online technologies.
History
In 1987 the Institute for Global Communications was officially formed to manage PeaceNet and the newly acquired EcoNet, which was the world's first computer network dedicated to environmental preservation and sustainability. In 1988 IGC began to collaborate with like-minded organizations outside the states and in partnership with six international organizations, IGC co-founded the Association of Progressive Communications (APC).
ConflictNet, incorporated by IGC in 1989, to provide information and communications for people by promoting the constructive resolution of conflicts is now enfolded in the PeaceNet network. LaborNet, a full network of IGC from 1992 through August 1999, serves the labor community by working for the human rights and economic justice of workers. WomensNet, launched in 1995 is an online community of individuals and organizations who use computer technology to advance the interests of women worldwide. Also the Anti-racism.Net forms part of IGC network family.
Strategies and Policies
IGC's aim is to offer progressive individuals and groups a place on the Internet to learn, meet and organize. IGC focuses on content, information sharing and collaborative tools and provides Internet access services, e-mail discussions and newsletters. The Institute for Global Communications aims at bringing Internet tools and online services to organizations and activists working on peace, economic and social justice, human rights, environmental protection, labor issues and conflict resolution. IGC also provides alternative news and political analysis as well as information about other progressive organizations.
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Galileo Galilee (1564-1642), the Italian Mathematician and Physicist is called the father of Enlightenment. He proofed the laws of the free fall, improved the technique for the telescope and so on. Galilee is still famous for his fights against the Catholic Church. He published his writings in Italian instead of writing in Latin. Like this, everybody could understand him, which made him popular. As he did not stop talking about the world as a ball (the Heliocentric World System) instead of a disk, the Inquisition put him on trial twice and forbid him to go on working on his experiments.
NLANR, initially a collaboration among supercomputer sites supported by the
Today NLANR offers support and services to institutions that are qualified to use high performance network service providers - such as Internet 2 and
http://www.nlanr.net
A proxy server is a server that acts as an intermediary between a workstation user and the Internet so that security, administrative control, and caching service can be ensured.
A proxy server receives a request for an Internet service (such as a Web page request) from a user. If it passes filtering requirements, the proxy server, assuming it is also a cache server, looks in its local cache of previously downloaded Web pages. If it finds the page, it returns it to the user without needing to forward the request to the Internet. If the page is not in the cache, the proxy server, acting as a client on behalf of the user, uses one of its own
Source: Whatis.com