Lucid (programming language)

Lucid is a dataflow programming language. It is designed to experiment with non-von Neumann programming models. It was designed by Bill Wadge and Ed Ashcroft and described in the book Lucid, the Dataflow Programming Language.

Model

Lucid uses a demand-driven model for data computation. Each statement can be understood as an equation defining a network of processors and communication lines between them through which data flows. Each variable is an infinite stream of values and every function is a filter or a transformer. Iteration is simulated by 'current' values and 'fby' (read as 'followed by') operator allowing composition of streams.

Lucid is based on an algebra of histories, a history being an infinite sequence of data items. Operationally, a history can be thought of as a record of the changing values of a variable, history operations such as first and next can be understood in ways suggested by their names. Lucid was originally conceived as a kind of very disciplined, mathematically pure, single-assignment language, in which verification would be very much simplified. However, the dataflow interpretation has been a very important influence on the direction in which Lucid has evolved.

Lucid (album)

Lucid is the fifth studio album by American R&B singer Lyfe Jennings. The album was released on October 8, 2013, by Mass Appeal Entertainment. On May 8, 2013, the album's first single "Boomerang" was released. On July 25, 2013, the music video was released for "Boomerang".

Critical response

Lucid was met with a generally positive reviews from music critics. Andy Kellman of AllMusic gave the album three out of four stars, saying "Jennings draws character sketches, spins cautionary tales—as someone still growing, learning from his mistakes—and largely sticks to the type of mature R&B that his listeners don't get from anyone else. He briefly breaks from the norm with "Rock," a classy but contemporary steppers groove that's one of his best songs. Despite a mostly new cast of collaborators—including TGT associate Brandon Hodge and producer/songwriter Lashaunda "Babygirl" Carr—Lucid is a natural progression for a veteran artist who seems to have plenty left to express."

Track listing

Film (band)

Film was a Yugoslav rock group founded in 1978 in Zagreb. Film was one of the most popular rock groups of the former Yugoslav new wave in the late 1970s to early 1980s.

History

New wave years (1979-1981)

During 1977 and 1978, bassist Marino Pelajić, guitarist Mladen Jurčić, and drummer Branko Hromatko were Azra members when Branimir "Johnny" Štulić brought Jura Stublić as the new vocalist. Stublić was to become Aerodrom member, but due to his deep vocals it never happened. The lineup functioned for a few months only and after a quarrel with Štulić, on early 1979, Pelajić, Jurčić, Hromatko and Stublić formed the band Šporko Šalaporko i Negove Žaluzine, naming the band after a story from the "Polet" youth magazine, which was soon after renamed to Film. The memories of the Azra lineup later inspired Štulić to write the song "Roll over Jura" released on Filigranski pločnici in 1982.

Saxophonist Jurij Novoselić, who at the time had worked under the pseudonym Kuzma Videosex, joined the band, inspiring others to use pseudonym instead of their original names: vocalist Stublić became Jura Jupiter, bassist Pelajić became Mario Baraccuda and guitarist Jurčić became Max Wilson. Before joining the band, Stublić did not have much experience as a vocalist, however, since his father had been an opera singer, he often visited the theatre and opera, and at the age of 13, he started playing the guitar, earning money as a street performer at seaside resorts.

Film (Iranian magazine)

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

References

External links

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.