Four-velocity
In physics, in particular in special relativity and general relativity, a four-velocity is a four-vector in four-dimensional spacetime that represents the relativistic counterpart of velocity, which is a three-dimensional vector in space.
Physical events correspond to mathematical points in time and space, the set of all of them together forming a mathematical model of physical four-dimensional spacetime. The history of an object traces a curve in spacetime, called its world line. If the object is massive, so that its speed is less than the speed of light, the world line may be parametrized by the proper time of the object. The four-velocity is the rate of change of four-position with respect to the proper time along the curve. The velocity, in contrast, is the rate of change of the position in (three-dimensional) space of the object, as seen by an observer, with respect to the observer's time.
The value of the magnitude of an object's four-velocity, i. e. the quantity obtained by applying the metric tensor g to the four-velocity u, that is ||u||2 = u ⋅ u = gμνuνuμ, is always equal to ±c2, where c is the speed of light. Whether the plus or minus sign applies depends on the choice of metric signature. For an object at rest its four-velocity is parallel to the direction of the time coordinate with u0 = c. A four-velocity is thus the normalized future-directed timelike tangent vector to a world line, and is a contravariant vector. Though it is a vector, addition of two four-velocities does not yield a four-velocity: The space of four-velocities is not itself a vector space.
10 Speed (album)
10 Speed is the second studio album by the Canadian rock band Mystery Machine. It was released in Jan 23, 1996 on the Nettwerk America label. 10 Speed was a notable album for being one of the first forays into mixing media and music in compact discs.
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SPEED2000
SPEED2000 is a software package designed for electromagnetic simulation for the analysis and design of high-speed electronic systems. It combines an electromagnetic field solver with circuit and transmission line simulations which allows it to compute dynamic electromagnetic interactions within integrated circuits. SPEED2000 provides electrical analysis of integrated circuit (IC) packages and printed circuit boards (PCBs). It is developed and marketed by Sigrity, Inc.
History
The algorithims on which SPEED2000 is based were initially developed by Dr. Jiayuan Fang (then Associate Professor of Electrical Engineering at Binghamton University) and his students. The electromagnetic simulation algorithims that he developed were 1000 times faster previous methods.
Dr. Fang patented the algorithims (see below) and founded a company called Sigrity, Inc. to further develop the software. He eventually left Binghamton University to work on his software full-time. The rights to the initial patents are owned by Binghamton University and the royalties provide funding for current research efforts at the university.
A Good Scent from a Strange Mountain
A Good Scent from a Strange Mountain is a 1992 collection of short stories by Robert Olen Butler. It received the Pulitzer Prize for Fiction in 1993.
Each story in the collection is narrated by a different Vietnamese immigrant living in the U.S. state of Louisiana. The stories are largely character-driven, with cultural differences between Vietnam and the United States as an important theme. Many of the stories were first published in journals such as The Hudson Review, The Southern Review, and The Virginia Quarterly Review. The collection was re-released in 2001 with two additional stories, "Salem" and "Missing".
Synopsis
Open Arms
The opening story is set during the Vietnam War. The narrator, a translator for the Australian forces, recounts the story of a North Vietnamese communist named Thập who joins the Australian forces as a spy, after the communists massacre his family. When the Australian soldiers bring him to a screening of pornographic films, Thập seems overwhelmed and disgusted. The narrator speculates that, as a former Communist, he considers pornography immoral, and that it simultaneously reminds him of his longing for his dead wife. Thập later kills an Australian soldier and himself.
Snow cream
Snow cream can be one of two distinct desserts.
The cream-based dessert
The cream-based variety of Snow "Cream" is an old English recipe. It is known in continental Europe at least as early as the late 15th or early 16th century where it can be found in the Dutch recipe collection now known as KANTL Gent 15. It has been suggested that "Snow" may be even older than that.
The common ingredients for early recipes are cream, rosewater and sugar, whipped until stiff. Other flavouring agents, e.g., cloves or ginger, are also known from various recipes. It is the process of whipping cream until stiff that is often likened to snow as can be seen in passages such as "Beat your cream with a stick until the Snow rises ...". It was often draped over another item to give the appearance of snow having fallen over the item.
Snow (Curt Kirkwood album)
'Snow' is the first solo album by Curt Kirkwood of the alternative rock band Meat Puppets, released in 2005. In his solo career, short though it was, he has pursued a more countrified aspect of his music. "Golden Lies" was originally written as the title track for the previous Meat Puppets album, however, it was ironically excluded. The album was recorded in only 20 days.
The album's title track was incorporated into the Meat Puppets' setlist upon their reunion tour in 2006.
Track listing
All songs composed by Curt Kirkwood, except where noted.
Personnel
Kiss (Bad Boys Blue album)
Kiss is the ninth studio album of German band Bad Boys Blue. It was released on September 27, 1993 by Coconut Records. One single was also released. John McInerney performed "Kiss You All Over, Baby" which before had been sung by Trevor Taylor. The song "Save Your Love" from the previous album was performed here as "Aguarda Tu Amorin" in Spanish. The song "Kisses And Tears" is taken from the second album.
This record was the last with Trevor Bannister. In 1993, Bad Boys Blue toured around Africa with singer Owen Standing who never was an official band member.
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Personnel
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