Jerk

Jerk or the Jerk may refer to:

Titled works:

Other:

See also

Jerk (play)

Jerk is a one-person puppet play by the American writer Dennis Cooper, made in collaboration with director Gisèle Vienne and performer Jonathan Capdevielle, based on Cooper's 1993 novel of the same name. It is based on the story of serial killer Dean Corll and his teenage accomplices David Brooks and Elmer Wayne Henley. The play develops the conceit that Brooks has learnt puppetry in prison and, as part of his rehabilitation, acts out the murders in which he participated via the use of glove puppets and ventriloquism. The performance also involved sections in which the audience read about the murders in pamphlets, entitled "Two Texts for a Puppet Play by David Brooks" that were distributed.

The production premiered on 5 March 2008 in Brest, France. The play was also performed in an English-language version at the South London Gallery as part of the Paris Calling season of performing arts, opening on 1 July 2009. Its performance included music by Peter Rehberg.

References

Sources

Jerk (physics)

In physics, jerk, also known as jolt, surge, or lurch, is the rate of change of acceleration; that is, the derivative of acceleration with respect to time, and as such the second derivative of velocity, or the third derivative of position. Jerk is defined by any of the following equivalent expressions:

where

Jerk is a vector, and there is no generally used term to describe its scalar magnitude (more precisely, its norm, e.g. "speed" as the norm of the velocity vector).

According to the result of dimensional analysis of jerk, [length/time³], the SI units are m/s³ (or m·s⁻³). There is no universal agreement on the symbol for jerk, but is commonly used. Newton's notation for the time derivative () is also applied.

The fourth derivative of position, equivalent to the first derivative of jerk, is jounce.

Because of involving third derivatives, in mathematics differential equations of the form

are called jerk equations. It has been shown that a jerk equation, which is equivalent to a system of three first order, ordinary, non-linear differential equations, is in a certain sense the minimal setting for solutions showing chaotic behaviour. This motivates mathematical interest in jerk systems. Systems involving a fourth or higher derivative are accordingly called hyperjerk systems.

Narc

Narc or nark may refer to:

Places

People

Art, entertainment, and media

Organizations

Science

Narc (film)

Narc is a 2002 American crime thriller film written and directed by Joe Carnahan and starring Ray Liotta and Jason Patric. The plot revolves around the efforts of two police detectives in search of the murderer of an undercover police officer. As they investigate, they engage in unethical behavior and uncover dark secrets that will challenge their fragile relationship.

Plot

Undercover narcotics officer Nick Tellis (Jason Patric) chases a drug dealer through the streets of Detroit after Tellis' identity has been discovered. During the pursuit, the dealer holds a child hostage. Tellis shoots and kills the dealer before he can hurt the child, however a stray bullet hits the child's pregnant mother, causing her to miscarry.

Eighteen months later, the Detroit Police Department asks Tellis to investigate the murder of an undercover narcotics officer called Michael Calvess. Tellis is initially reluctant, as there is little else he can do for a living however, he reads the investigation files and agrees to take the case, on two conditions. The first: he will get a desk job if he secures a conviction. The second: he is partnered with detective Henry Oak (Ray Liotta), whom Tellis is aware of through reading the files on Calvess' death. Tellis' reason for wanting Oak is his opinion that the only useful evidence in the investigation came from him. The department chief informs Tellis of Oak's reputation as a driven and effective policeman, but also warns him about his instability. Despite his reservations, Oak is assigned to the case.

Informant

An informant is a person who provides privileged information about a person or organization to an agency. The term is usually used within the law enforcement world, where they are officially known as confidential or criminal informants (CI), and can often refer pejoratively to the supply of information without the consent of the other parties with the intent of malicious, personal or financial gain. However, the term is used in politics, industry and academia.

Criminal informants

Informants are commonly found in the world of organized crime. By its very nature, organized crime involves many people who are aware of each other's guilt, in a variety of illegal activities. Quite frequently, confidential informants (or criminal informants) will provide information in order to obtain lenient treatment for themselves and provide information, over an extended period of time, in return for money or for police to overlook their own criminal activities. Quite often, someone will become an informant following their arrest.