Imperative (film)

Imperativ (internationally released as Imperative) is a 1982 German drama film written and directed by Krzysztof Zanussi.

The film entered the competition at the 39th Venice International Film Festival, where it received the Special Jury Prize.

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Imperative

Imperative can mean:

In philosophy:

Imperative programming

In computer science, imperative programming is a programming paradigm that uses statements that change a program's state. In much the same way that the imperative mood in natural languages expresses commands, an imperative program consists of commands for the computer to perform. Imperative programming focuses on describing how a program operates.

The term is often used in contrast to declarative programming, which focuses on what the program should accomplish without specifying how the program should achieve the result.

Imperative and procedural programming

Procedural programming is a type of imperative programming in which the program is built from one or more procedures (also known as subroutines or functions). The terms are often used as synonyms, but the use of procedures has a dramatic effect on how imperative programs appear and how they are constructed. Heavily-procedural programming, in which state changes are localized to procedures or restricted to explicit arguments and returns from procedures, is known as structured programming. From the 1960s onwards, structured programming and modular programming in general have been promoted as techniques to improve the maintainability and overall quality of imperative programs. Object-oriented programming extends this approach.

Film (Iranian magazine)

Film (Persian:فیلم) is an Iranian film review magazine published for more than 30 years. The head-editor is Massoud Mehrabi.

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Film (film)

Film is a 1965 film written by Samuel Beckett, his only screenplay. It was commissioned by Barney Rosset of Grove Press. Writing began on 5 April 1963 with a first draft completed within four days. A second draft was produced by 22 May and a forty-leaf shooting script followed thereafter. It was filmed in New York in July 1964.

Beckett’s original choice for the lead – referred to only as “O” – was Charlie Chaplin, but his script never reached him. Both Beckett and the director Alan Schneider were interested in Zero Mostel and Jack MacGowran. However, the former was unavailable and the latter, who accepted at first, became unavailable due to his role in a "Hollywood epic." Beckett then suggested Buster Keaton. Schneider promptly flew to Los Angeles and persuaded Keaton to accept the role along with "a handsome fee for less than three weeks' work."James Karen, who was to have a small part in the film, also encouraged Schneider to contact Keaton.

The filmed version differs from Beckett's original script but with his approval since he was on set all the time, this being his only visit to the United States. The script printed in Collected Shorter Plays of Samuel Beckett (Faber and Faber, 1984) states:

Lubrication theory

In fluid dynamics, lubrication theory describes the flow of fluids (liquids or gases) in a geometry in which one dimension is significantly smaller than the others. An example is the flow above air hockey tables, where the thickness of the air layer beneath the puck is much smaller than the dimensions of the puck itself.

Internal flows are those where the fluid is fully bounded. Internal flow lubrication theory has many industrial applications because of its role in the design of fluid bearings. Here a key goal of lubrication theory is to determine the pressure distribution in the fluid volume, and hence the forces on the bearing components. The working fluid in this case is often termed a lubricant.

Free film lubrication theory is concerned with the case in which one of the surfaces containing the fluid is a free surface. In that case the position of the free surface is itself unknown, and one goal of lubrication theory is then to determine this. Surface tension may then be significant, or even dominant. Issues of wetting and dewetting then arise. For very thin films (thickness less than one micrometre), additional intermolecular forces, such as Van der Waals forces or disjoining forces, may become significant.