alpha


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alpha

1. the first letter in the Greek alphabet (Α, α), a vowel transliterated as a
2. Brit the highest grade or mark, as in an examination
3. 
a. involving or relating to helium-4 nuclei
b. relating to one of two or more allotropes or crystal structures of a solid
c. relating to one of two or more isomeric forms of a chemical compound, esp one in which a group is attached to the carbon atom to which the principal group is attached

alpha

(al -fă) (α)
1. The first letter of the Greek alphabet, used in stellar nomenclature usually to designate the brightest star in a constellation or sometimes to indicate a star's position in a group.
2. Symbol for right ascension.

alpha

[′al·fə]
(electronics)
The ratio between the change in collector current and the change in emitter current of a transistor.
(science and technology)
The first letter in the Greek alphabet: α, A.

ALPHA

(language)
(Or "Input") An extension of ALGOL 60 for the M-20 computer developed by A.P. Ershov at Novosibirsk in 1961. ALPHA includes matrix operations, slices, and complex arithmetic.

["The Alpha Automatic Programming System", A.P. Ershov ed., A-P 1971].

Alpha

(2)
1. <tool> A compiler generator written by Andreas Koschinsky <koschins@cs.tu-berlin.de> and described in his thesis at the Technische Universitaet Berlin. Alpha takes an attribute grammar and uses Bison and Flex to generate a parser, a scanner and an ASE evaluator (Jazayeri and Walter).

The documentation is in german.

Alpha

(1) See WolframAlpha.

(2) A family of RISC-based, 64-bit CPUs and computer systems from HP. Originally developed by Digital, which was acquired by Compaq and then HP, the first model introduced in early 1992 was the 150 MHz 21064-AA, considered equivalent to a Cray-1 on a single chip. Subsequent Alpha models continued to blaze the trails for high-speed microprocessors. Alpha-based servers (AlphaServers) run under Tru64 Unix and OpenVMS. In the mid-1990s, Windows NT was ported to the Alpha platform, but support was later dropped.

Alpha Went to Intel
In 2001, Compaq sold all Alpha intellectual property to Intel and announced it would switch its high-end servers to Intel's Itanium processors by 2004. HP acquired Compaq in 2002 and introduced enhanced AlphaServers. Orders were accepted for the new machines until April 2007, and support and service were promised until 2012.


Alpha Models
Shown here are a number of Alpha servers from low to high end. The Alpha chips are always pushing the envelope in performance and architecture. (Image courtesy of Compaq Computer Corporation.)
References in periodicals archive ?
For more information regarding Chi Kappa Omega Chapter of Alpha Kappa Alpha Sorority, write to P.
For instance, a changeable alpha may indicate that extra dimensions of space exist beyond the three familiar to us.
Alpha 1 plans to direct its efforts to the development of Thymosin B4, a novel actin-sequestering peptide, which could have applications in the treatment of sepsis, adult respiratory distress syndrome, chronic bronchitis, asthma, and cystic fibrosis.
In the natural progression of our mutual interests, it makes perfect logic to grant TTE first status to acquire Alpha," commented Mr.
Nongenomic actions of estrogens and xenoestrogens by binding at a plasma membrane receptor unrelated to estrogen receptor alpha and estrogen receptor beta.
Until recently, scientists attributed the cellular havoc wreaked by alpha particles to their direct effects on DNA.
Alpha 1 will concentrate its resources on the development and clinical application of other proprietary peptides that have shown promise in the laboratory and on its joint venture, Viral Technologies, Inc.
Chronic 'cryptogenic' liver disease and malignant hepatoma in intermediate alpha 1-antitrypsin deficiency identified by a PiZ-specific monoclonal antibody.
The terms of the agreement are effective immediately, and SciClone expects that the transaction will close upon completion by Alpha 1 of certain assignments of rights no later than September 30, 1994.
Al Millar, Alpha Pro Tech's President, commented, "As a recognized global leader, distributing to key industrial target markets for Alpha Pro Tech, VWR has been our largest and most trusted partner for more than 10 years.
Simmon, President and Chief Executive Officer of Alpha 1, stated that "we are, of course, very disappointed by the ruling, " Dr.