Tierra

Astronomy

Computing and games

Film

Music

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Tierra (computer simulation)

Tierra is a computer simulation developed by ecologist Thomas S. Ray in the early 1990s in which computer programs compete for time (central processing unit (CPU) time) and space (access to main memory). In this context, the computer programs in Tierra are considered to be evolvable and can mutate, self-replicate and recombine. Tierra's virtual machine is written in C. It operates on a custom instruction set designed to facilitate code changes and reordering, including features such as jump to template (as opposed to the relative or absolute jumps common to most instruction sets).

Simulations

The basic Tierra model has been used to experimentally explore in silico the basic processes of evolutionary and ecological dynamics. Processes such as the dynamics of punctuated equilibrium, host-parasite co-evolution and density-dependent natural selection are amenable to investigation within the Tierra framework. A notable difference between Tierra and more conventional models of evolutionary computation, such as genetic algorithms, is that there is no explicit, or exogenous fitness function built into the model. Often in such models there is the notion of a function being "optimized"; in the case of Tierra, the fitness function is endogenous: there is simply survival and death.

Tierra (band)

Tierra is a Latin R&B band, originally from Los Angeles, California, that was first established in the 1970s by former El Chicano members Steve Salas (vocals) and his brother Rudy Salas (guitar). The other original members were Bobby Navarrete (reeds), Joey Guerra (keyboards), Steve Falomir (bass guitar), and Philip Madayag (drums) and Andre Baeza (percussion). Their biggest hit was the 1980 remake of The Intruders' 1967 hit "Together", written by Gamble & Huff, which reached #18 on the Billboard Hot 100, and #9 on the US Billboard R&B chart.

Background

Tierra has the distinction of being the first Latino band to have four songs on the national chart with two of them in the Top 100 at the same time.

Around 1973, Rudy and Steve Salas formed Tierra and their self-titled debut album was recorded. By the mid-1970s the band consisted of the Salas brothers, Rudy Villa on reeds, Kenny Romain on drums and latin-percussion, Conrad Lazano on bass, Aaron Ballesteros on drums and vocals, Alfred Rubaclava on bass and Leon Bisquera on keyboards. Around that time they recorded the album Stranded for the Salsoul records label.

Dagmar (American actress)

Dagmar (born Virginia Ruth Egnor, November 29, 1921 – October 9, 2001) was an American actress, model and television personality of the 1950s. As a statuesque, busty blonde, she became the first major female star of television, receiving much press coverage during that decade.

Born in Yawkey, West Virginia, she went to high school in Huntington, West Virginia where she was known as Ruthie. She attended Huntington Business School and worked at Walgreens as a cashier, waitress, sandwich maker and soda jerk.

Broadway bound

After her marriage to Angelo Lewis in 1941, she moved to New York where he was a Naval officer, stationed at Navy Ferry Command on Long Island. She adopted Jennie Lewis as her stage name (taken from her real life married name, Virginia Lewis). To keep busy, she became a fashion photographer's model, and in 1944, other models encouraged her to audition for comedians Ole Olsen and Chic Johnson. Although she had no show business experience, she was cast in their Broadway musical revue, Laffing Room Only, a Shubert production at the Winter Garden Theatre. With Olsen and Johnson, she performed in four sketches from December 23, 1944 to July 14, 1945.

Dagmar (Puerto Rico entertainer)

Dagmar (born March 24, 1955), is a Puerto Rican television host, actress and singer.

Early years

Dagmar Rivera was born in Brooklyn, New York, and raised in Dorado, Puerto Rico. She started her career as a teenage singer in 1976. The only hit single of her first album was Soy la Mañana (I'm the Morning), by Puerto Rican composer Rafi Monclova. She was also a member of a vocal group called: Allegro alongside Tito Lara, Angel "Cuco" Peña & Lunna, among others, the gospel group: Spiritual, and the female vocal trio: The Masterpiece.

1970s

During the 1970s, she started her career as a comedian with her child role Dagmarita in the comedy series Esto No Tiene Nombre (It does not have name which is an expression in Puerto Rico used when something cannot be explained or it is absurd), broadcast by WAPA-TV.

During the 1980s, she married Faustino García, and they had their only son: Faustino J.R..

She was featured as a comedienne in Nydia Caro's television show as Dagmarita, Los Kakucómicos, and from 1985 to 1991, she starred alongside Lou Briel in two television shows. The musical comedy En Broma y en Serio (Joking and Seriously), and the children's television series Teatrimundo (Small Theater World), both broadcast by Telemundo. Sandra Zaiter was also featured in the latter. Years later, she was featured alongside Zaiter in Telecómicas.

Dagmar (given name)

Dagmar is a feminine Scandinavian given name, also used in the Czech Republic, Slovakia, Poland (Dagmara), The Netherlands and Germany, derived from the Old Norse name (Dagmær), dagr meaning "day", and mær meaning "daughter," "mother" and "maiden."

Nicknames (in Czech): Dagie, Dagmarka, Dasha, Dáša, Digi, Mara. Nicknames (in German): Dagi, Daggi

Dagmar is uncommon as a surname or as a male name.

List of people with the given name Dagmar

Libre

Libre is an adjective meaning "free, at liberty". It may also refer to:

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