Iris recognition relies upon the fact that every individuals retina has a unique structure. The iris landscape is composed of a corona, crypts, filaments, freckles, pits radial furrows and striatations. Iris scanning is considered a particularly accurate identification technology because the characteristics of the iris do not change during a persons lifetime, and because there are several hundred variables in an iris which can be measured. In addition, iris scanning is fast: it does not take longer than one or two seconds.
These are characteristics which have made iris scanning an attractive technology for high-security applications such as prison surveillance. Iris technology is also used for online identification where it can substitute identification by password. As in other biometric technologies, the use of iris scanning for the protection of privacy is a two-edged sword. The prevention of identity theft applies horizontally but not vertically, i.e. in so far as the data retrieval that accompanies identification and the data body which is created in the process has nothing to do with identity theft.
TEXTBLOCK 1/3 // URL: http://world-information.org/wio/infostructure/100437611729/100438658334
Cartoons' technique is simplicity.
Images are easier to remember than texts.
Frequently they show jokes about politicians, friendly or against the person shown. In the first decades of this century, cartoons were also used for propaganda against artists; remember the famous cartoons of
As a tool in politics it had fatal consequences by determining stereotypes, which never again could be erased even if detected as pure disinformation. Most famous got the cartoons about Jews, which were not only distributed by Germans and Austrians but all over Europe; and already in the tens and twenties of our century. Most horrifying is the fact that many of those old, fascist and racist cartoons are coming back now, in slightly different design only.
TEXTBLOCK 2/3 // URL: http://world-information.org/wio/infostructure/100437611661/100438658509
Following the invention of the first
Also, ensuing the introduction of the minicomputer in the mid 1970s by the early 1980s a market for personal computers (PC) was established. As computers had become easier to use and cheaper they were no longer mainly utilized in offices and manufacturing, but also by the average consumer. Therefore the number of personal computers in use more than doubled from 2 million in 1981 to 5.5 million in 1982. Ten years later, 65 million PCs were being used.
Further developments included the creation of mobile computers (laptops and palmtops) and especially networking technology. While mainframes shared time with many terminals for many applications, networking allowed individual computers to form electronic co-operations.
TEXTBLOCK 3/3 // URL: http://world-information.org/wio/infostructure/100437611663/100438659451
As laid down in the proposed EU Directive on copyright and related
The telephone was not invented by Alexander Graham Bell, as is widely held to be true, but by Philipp Reiss, a German teacher. When he demonstrated his invention to important German professors in 1861, it was not enthusiastically greeted. Because of this dismissal, no financial support for further development was provided to him.
And here Bell comes in: In 1876 he successfully filed a patent for the telephone. Soon afterwards he established the first telephone company.
Open Systems Interconnection (OSI) is a standard reference model for communication between two end users in a network. It is used in developing products and understanding networks.
Source: Whatis.com