Regular Language description for XML

REgular LAnguage description for XML (RELAX) is a specification for describing XML-based languages. A description written in RELAX is called a RELAX grammar.

RELAX Core has been approved as an ISO/IEC Technical Report 22250-1 in 2002 (ISO/IEC TR 22250-1:2002). It was developed by ISO/IEC JTC1/SC34 (ISO/IEC Joint Technical Committee 1, Subcommittee 34 - Document description and processing languages).

RELAX was designed by Murata Makoto.

In 2001, an XML schema language RELAX NG was created by unifying of RELAX Core and James Clark's TREX. It was published as ISO/IEC 19757-2 in 2003.

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Beat (music)

In music and music theory, the beat is the basic unit of time, the pulse (regularly repeating event), of the mensural level (or beat level). The beat is often defined as the rhythm listeners would tap their toes to when listening to a piece of music, or the numbers a musician counts while performing, though in practice this may be technically incorrect (often the first multiple level). In popular use, beat can refer to a variety of related concepts including: tempo, meter, specific rhythms, and groove.

Rhythm in music is characterized by a repeating sequence of stressed and unstressed beats (often called "strong" and "weak") and divided into bars organized by time signature and tempo indications.

Metric levels faster than the beat level are division levels, and slower levels are multiple levels. See Meter (music)#Metric structure. Beat has always been an important part of music.

Downbeat and upbeat

The downbeat is the first beat of the bar, i.e. number 1. The upbeat is the last beat in the previous bar which immediately precedes, and hence anticipates, the downbeat. Both terms correspond to the direction taken by the hand of a conductor.

HipHop for PHP

HipHop for PHP (HPHPc) is a discontinued PHP transpiler created by Facebook. By using HPHPc as a source-to-source compiler, PHP code is translated into C++, compiled into a binary and run as an executable, as opposed to the PHP's usual execution path of PHP code being transformed into opcodes and interpreted. HPHPc consists mainly of C++, C and PHP source code, and it is free and open-source software distributed under the PHP License.

The original motivation behind HipHop was to save resources on Facebook servers, given the large PHP codebase of facebook.com. As the development of HipHop progressed, it was realised that HipHop could substantially increase the speed of PHP applications in general. Increases in web page generation throughput by factors of up to six have been observed over the Zend PHP. A stated goal of HPHPc was to provide a high level of compatibility for Zend PHP, where most Zend-based PHP programs run unmodified on HPHPc. HPHPc was originally open sourced in early 2010.

Low (Flo Rida song)

"Low" is the debut single by American rapper Flo Rida, featured on his debut studio album Mail on Sunday and also featured on the soundtrack to the 2008 film Step Up 2: The Streets. The song features fellow American rapper T-Pain and was co-written with T-Pain. There is also a remix in which the hook is sung by Flo Rida rather than T-Pain. An official remix was made which features Pitbull and T-Pain. With its catchy, up-tempo and club-oriented Southern hip hop rhythms, the song peaked at the summit of the U.S. Billboard Hot 100.

The song was a massive success worldwide and was the longest running number-one single of 2008 in the United States. With over 6 million digital downloads, it has been certified 7× Platinum by the RIAA, and was the most downloaded single of the 2000s decade, measured by paid digital downloads. The song was named 3rd on the Billboard Hot 100 Songs of the Decade. "Low" spent ten consecutive weeks on top of the Billboard Hot 100, the longest-running number-one single of 2008.

Radio (Darius Rucker song)

"Radio" is a song co-written and recorded by American country music artist Darius Rucker. It was released on July 22, 2013 as the third single from his album True Believers. Rucker wrote the song with Luke Laird and Ashley Gorley.

Content

The song is a reflection on the narrator's teenage years: specifically, of borrowing his mother's car to take his girlfriend for a ride, and listening to songs on the radio while doing so.

Critical reception

The song generally received favorable reviews. Bobby Peacock of Roughstock gave the song four and a half stars out of five, saying that "it sounds like the kind of fun song you would want to hear on the radio at a memorable moment." Peacock praised Rucker's "all-smiles delivery" and the song's "incredibly catchy melody and tight production." He also compared its theme to "I Watched It All (On My Radio)" by Lionel Cartwright. Tammy Ragusa of Country Weekly gave the song an A grade, calling it "the perfect marriage of an artist’s effervescent personality with an upbeat song, this one about the love of music." Billy Dukes of Taste of Country gave the song two and a half stars out of five, writing that "the uptempo tribute to young love, open roads and, of course, the radio is familiar and easy to fall for, especially when powered by Rucker’s unequaled exuberance." However, Dukes also called the song "a little fluffy" and "not difficult to forget."

X-Dream

X-Dream are Marcus Christopher Maichel (born May 1968) and Jan Müller (born February 1970); they are also known as Rough and Rush. They are some of the cult hit producers of psychedelic trance music and hail from Hamburg, Germany.

The latest X-Dream album, We Interface, includes vocals from American singer Ariel Electron.

First work

Muller was educated as a sound engineer. Maichel was a musician familiar with techno and reggae, and was already making electronic music in 1986. In 1989 the pair first met when Marcus was having problems with his PC and someone sent Jan to help fix it. That same year they teamed up to work on a session together. Their first work concentrated on a sound similar to techno with some hip hop elements which got some material released on Tunnel Records.

Trance

During the early 1990s they were first introduced to the trance scene in Hamburg and decided to switch their music to this genre. From 1993 they began releasing several singles on the Hamburg label Tunnel Records, as X-Dream and under many aliases, such as The Pollinator. Two albums followed on Tunnel Records, Trip To Trancesylvania and We Created Our Own Happiness, which were much closer to the original formula of psychedelic trance, although featuring the unmistakable "trippy" early X-Dream sound.

Loop device

In Unix-like operating systems, a loop device, vnd (vnode disk), or lofi (loop file interface) is a pseudo-device that makes a file accessible as a block device.

Before use, a loop device must be connected to an existing file in the filesystem. The association provides the user with an API that allows the file to be used in place of a block special file (cf. device file system). Thus, if the file contains an entire file system, the file may then be mounted as if it were a disk device.

Files of this kind are often used for CD ISO images and floppy disc images. Mounting a file containing a filesystem via such a loop mount makes the files within that filesystem accessible. They appear in the mount point directory.

A loop device may allow some kind of data elaboration during this redirection. For example, the device may be the unencrypted version of an encrypted file. In such a case, the file associated with a loop device may be another pseudo-device. This is mostly useful when this device contains an encrypted file system. If supported, the loop device is in this case the decrypted version of the original encrypted file and can therefore be mounted as if it were a normal filesystem.