LauRa

Entries from February 2009

DIFFERNCE BETWEEN XML-HTML

February 8, 2009 · Leave a Comment

XML and HTML are different and they both have different goals. They are designed for different purposes. Some people think that xml is an advanced version of html and it has come to replace html. It is not the case. Both will be there as they are used for different purposes.

XML files are meant to hold data and data in an xml file is well described. If you look at an xml file you can say what it holds. For example if you find a number in an xml file you can find out easily what that number identifies, whether it is the number of products, or the price of a product etc. In html it is not the case.

HTML is used to display the data in a formatted way. You can apply styles and use different layouts to display the data in an html file. The data that is displayed in an html file could come from an xml file.

So to say in simple words, html displays the data and xml holds the data!


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    Categories: IST · Littera

    Kevin Kelly´s biography

    February 8, 2009 · Leave a Comment

    Kevin Kelly (born 1952) is the founding executive editor of Wired magazine, and a former editor/publisher of the Whole Earth Catalog. He has also been a writer, photographer and conservationist. Kelly is a student of cultures (Asian ones in particular) and is considered by some an expert in digital culture.

    Kevin Kelly was born in Pennsylvania in 1952 and graduated from Westfield High School, Westfield, New Jersey in 1970. Although he dropped out of University of Rhode Island after only one year, his writings have appeared in the New York Times, Esquire, The Economist and other periodicals —in addition to the books he has authored and the magazines he either edited, founded, or helped to found.

    When he was 27 Kevin Kelly was a freelance photo journalist, and got locked out of his hostel in Jerusalem due to being late for a curfew. He slept on the supposed spot where Jesus was crucified, and in the morning had a religious experience. He decided to live as if he only had six months left to live. He went and lived peacefully with his parents, anonymously gave away his money, visited his friends, and came back home to “die” on the night of Halloween.

    In 1981, Kelly founded Walking Journal. He is a former editor of Whole Earth Review (see also CoEvolution Quarterly), Signal, and some of the later editions of the Whole Earth Catalog. With Whole Earth’s founder, Stewart Brand, Kelly helped found the WELL, a highly regarded online community. He has been a director of the Point Foundation, which sponsored the first Hackers Conference in 1984 (before the word “hacker” had its current common, negative connotation).

    In 1994, Wired Magazine, for which Kelly was executive director, won the National Magazine Award for General Excellence. Kelly is now editor at large for the magazine. Partially due to his reputation as Wired’s editor, he is noted as a participant and observer of “cyberculture”.

    Kelly’s writing has appeared in many other national and international publications such as The New York Times, The Economist, Time, Harper’s Magazine, Science, Veneer, GQ, and Esquire. His photographs have appeared in Life and other American national magazines.

    Kelly’s most notable book-length publication, Out of Control: The New Biology of Machines, Social Systems, and the Economic World (1994), presents a view on the mechanisms of complex organization. The central theme of the book is that several fields of contemporary science and philosophy point in the same direction: intelligence is not organized in a centralized structure but much more like a bee-hive of small simple components. Kelly applies this view to bureaucratic organisations, intelligent computers, and to the human brain.

    Among Kelly’s personal involvements is a campaign to make a full inventory of all living species on earth, an effort also known as the Linnaean enterprise. The goal is to make an attempt at an “all species” web-based catalog in one generation (25 years).

    Kelly lives in Pacifica, California, a small coastal town just south of San Francisco. He is a devout Christian. He is married and has three children.

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    Categories: IST · Littera

    RSS

    February 7, 2009 · Leave a Comment

    According to the WIKIPEDIA:

    RSS is a family of Web feed formats used to publish frequently updated works—such as blog entries, news headlines, audio, and video—in a standardized format. An RSS document (which is called a “feed”, “web feed”, or “channel”) includes full or summarized text, plus metadata such as publishing dates and authorship. Web feeds benefit publishers by letting them syndicate content automatically. They benefit readers who want to subscribe to timely updates from favored websites or to aggregate feeds from many sites into one place. RSS feeds can be read using software called an “RSS reader”, “feed reader”, or “aggregator”, which can be web-based, desktop-based, mobile device or any computerized Internet-connected device. A standardized XML file format allows the information to be published once and viewed by many different programs. The user subscribes to a feed by entering the feed’s URI (often referred to informally as a “URL”, although technically, those two terms are not exactly synonymous) into the reader or by clicking an RSS icon in a browser that initiates the subscription process. The RSS reader checks the user’s subscribed feeds regularly for new work, downloads any updates that it finds, and provides a user interface to monitor and read the feeds.

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    Categories: IST · Littera

    HYPERTETXT

    February 5, 2009 · Leave a Comment

    Hypertext is text which is not constrained to be linear.

    Hypertext is text which contains links to other texts. The term was coined by Ted Nelson around 1965.

    most often refers to text on a computer that will lead the user to other, related information on demand. Hypertext represents a relatively recent innovation to user interfaces, which overcomes some of the limitations of written text. Rather than remaining static like traditional text, hypertext makes possible a dynamic organization of information through links and connections (called hyperlinks). Hypertext can be designed to perform various tasks; for instance when a user “clicks” on it or “hovers” over it, a bubble with a word definition may appear, a web page on a related subject may load, a video clip may run, or an application may open.

     

     

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    Categories: IST · Littera