Prom

In the United States, and increasingly in the United Kingdom and Canada, prom is a formal (black tie) dance or gathering of high school students. This event is typically held near the end of the senior year (the last year of high school). Proms figure greatly in popular culture and is a major event among high school students. High school juniors attending the prom may call it "junior prom" while high-school seniors may call it "senior prom" or "senior ball". In practice, this event may be a combined junior/senior dance.

At a prom, a Prom King and Prom Queen may be revealed. These are honorary titles awarded to students elected in a school-wide vote prior to the prom, and seniors are usually awarded these titles. Juniors may also be honored, but would be called "Prom Prince" or "Prom Princess." Other students may be honored with inclusion in a "Prom Court." The selection method for a Prom Court is similar to that of Homecoming Queen/Princess, King, and Court. Inclusion in a Prom Court may be a reflection of popularity of those students elected and their level of participation in school activities, such as clubs or sports. The Prom Queen and Prom King may be given crowns to wear. Members of the Prom Court may be given sashes to wear and photographed together.

Prom (album)

Prom is the second solo album by Amy Ray of Indigo Girls, released in 2005 on her Daemon Records label.

Track listing

All songs written by Amy Ray

PROM-1

The PROM-1 is a Yugoslavian manufactured bounding type of anti-personnel mine. It consists of a cylindrical body with a pronged fuze inserted into the top of the mine. It is broadly similar in operation to the German S-mine.

The mine is triggered by the tilting of the prongs situated on top of the mine. This is caused by either direct pressure on the prongs or by tension on a tripwire attached to them. Tilting the prongs allows three striker retaining balls to escape. This releases the spring-loaded striker, which is flipped downwards into the percussion cap and fires the three gram propellant charge. The explosion of the propellant charge forces the upper half of the mine body out of the ground and up into the air, shearing off several brass screws and leaving the base plug of the mine behind in the ground.

The mine's body is tethered to its base by a short length of wire, which unwinds behind it as it rises. When the mine reaches a height of approximately 65 centimetres the wire is pulled. This jerks the detonator assembly downwards into the striker. The detonator fires, triggering the main explosive charge, which shatters the internally grooved body into a large number of high-velocity steel fragments, which spray in all directions. Because the time taken from triggering the mine to detonation is so short (typically one second), there is no time to take cover from the blast.

Pile

Pile may refer to:

Energy

Architecture

Data processing

People

Places

Pile (abstract data type)

In computer science, a pile is an abstract data type for storing data in a loosely ordered way. There are two different usages of the term; one refers to an ordered deque, the other to an improved heap.

Ordered deque

The first version combines the properties of the deque and a priority queue and may be described as an ordered deque.

An item may be added to the head of the list if the new item is valued less than or equal to the current head or to the tail of the list if the new item is greater than or equal to the current tail. Elements may be removed from both the head and the tail.

Piles of this kind are used in the "UnShuffle sort" sorting algorithm.

Improved heap

The second version is a subject of patents and improves the heap data structure.

The whole Data Pile-based system can be generalized as shown:

References

Pile (heraldry)

In heraldry, a pile is a charge usually counted as one of the ordinaries (figures bounded by straight lines and occupying a definite portion of the shield).

It consists of a wedge emerging from the upper edge of the shield and converging to a point near the base. If it touches the base, it is blazoned throughout.

Variant positions and varying numbers

Though the pile issues from the chief (upper edge) by default, it may be specified as issuing from any other part of the edge or as extending from edge to edge of the shield. Although it is not supposed to issue singly from the base, this rule is frequently ignored.

a pile reversed (or inverted or issuant from the base). If not drawn high enough, it can be confused with a division of the field per chevron. See the coat of the Asper Foundation, Canada.

a pile reversed (or inverted or issuant from the base). If not drawn high enough, it can be confused with a division of the field per chevron. See the coat of the Asper Foundation, Canada.

Song

A song is a single (and often standalone) work of music intended to be sung by the human voice with distinct and fixed pitches and patterns using sound and silence and a variety of forms that often include the repetition of sections. Written words created specifically for music or for which music is specifically created, are called lyrics. If a pre-existing poem is set to composed music in classical music it is an art song. Songs that are sung on repeated pitches without distinct contours and patterns that rise and fall are called chants. Songs in a simple style that are learned informally are often referred to as folk songs. Songs that are composed for professional singers are called popular songs. These songs, which have broad appeal, are often composed by professional songwriters, composers and lyricists. Art songs are composed by trained classical composers for concert performances. Songs are performed live and recorded. Songs may also appear in plays, musical theatre, stage shows of any form, and within operas.