Monday, September 29, 2008

Technologies :Ajax

The term Ajax has come to stand for a broad group of web technologies that can be used to apply a web application that communicates with a server in the backdrop, without interfering with the current state of the page. In the article that coined the term Ajax, Jesse James Garrett explains that it refers specifically to these technologies:

* XHTML and CSS for presentation

* the Document Object Model for dynamic display of and interaction with data

* XML and XSLT for the interchange and manipulation of data, respectively

* the XMLHttpRequest object for asynchronous communication

* JavaScript to bring these technologies together

Since then, though, there have been a number of developments in the technology used in an Ajax application, and the definition of the term Ajax. In particular, it has been renowned that:

* JavaScript is not the only client-side scripting language that can be used for implement an Ajax application. Other languages such as VBScript are also capable of the necessary functionality.

* The XMLHttpRequest object is not necessary for asynchronous announcement. It has been noted that IFrames are capable of the same consequence.

* XML is not required for data exchange and therefore XSLT is not required for the treatment of data. JavaScript Object Notation is often used as an alternative format for data exchange, although extra format such as preformatted HTML or plain book can also be used.

Sunday, September 21, 2008


Ajax is combination of both asynchronous JavaScript and XML, or AJAX, is a group of interconnected web development technique used for creating interactive web application or rich Internet application. With Ajax, web application can recover data from the server asynchronously in the setting without intrusive with the display and behavior of the obtainable page. Data is retrieve using the XMLHttpRequest object or all the way through the use of Remote Scripting in browsers that do not hold it. Despite the name, the use of JavaScript, XML, or its asynchronous use is not necessary.

Monday, September 8, 2008

Raga system

A raga in Carnatic music prescribes a set of rules for build a melody very similar to the Western concept of mode. It specify rules for actions up and down, the scale of which notes should figure more and which notes should be used more scarcely, which notes may be sung with gamaka, which phrases should be used, phrases should be avoid, and so on. In effect, it is a series of necessary musical events which must be observed, either absolutely or with a particular frequency.

In Carnatic music, the sampoorna ragas are classify into a method called the melakarta, which groups them according to the kinds of comments that they have. There are seventy-two melakarta ragas, thirty six of whose madhyama is sadharana, the residual thirty-six of whose madhyama is prati. The ragas are group into sets of six, called chakras group according to the supertonic and mediant scale degrees. There is a scheme known as the katapayadi sankhya to establish the names of melakarta ragas.

Ragas may be divided into two modules: janaka ragas and janya ragas. Janya ragas are subclassified into different categories themselves.