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Look up Β or β in Wiktionary, the free dictionary. |
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| Greek alphabet | |||
|---|---|---|---|
| Αα | Alpha | Νν | Nu |
| Ββ | Beta | Ξξ | Xi |
| Γγ | Gamma | Οο | Omicron |
| Δδ | Delta | Ππ | Pi |
| Εε | Epsilon | Ρρ | Rho |
| Ζζ | Zeta | Σσς | Sigma |
| Ηη | Eta | Ττ | Tau |
| Θθ | Theta | Υυ | Upsilon |
| Ιι | Iota | Φφ | Phi |
| Κκ | Kappa | Χχ | Chi |
| Λλ | Lambda | Ψψ | Psi |
| Μμ | Mu | Ωω | Omega |
| History | |||
| Archaic local variants
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| In other languages | |||
| Scientific symbols | |||
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Beta (UK /ˈbiːtə/ or US /ˈbeɪtə/; uppercase Β, lowercase β; Greek: Βήτα Bḗta) is the second letter of the Greek alphabet. In Ancient Greek, beta represented the voiced bilabial plosive /b/. In Modern Greek, it represents the voiced labiodental fricative /v/.
The letter Beta was derived from the Phoenician letter Beth 
. Letters that arose from Beta include the Roman letter ⟨B⟩ and the Cyrillic letters ⟨Б⟩ and ⟨В⟩.
In the system of Greek numerals Beta has a value of 2.
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Name [link]
Like the names of most other Greek letters, the name of beta was adopted from the acrophonic name of the corresponding letter in Phoenician, which was the common Semitic word *bayt ('house'). In Greek, the name was βῆτα bêta, pronounced [bɛ̂ːta] in Ancient Greek. It is spelled βήτα in the modern monotonic orthography, and pronounced [ˈvita]. In English, the name is pronounced either /ˈbeɪtə/ (US) or /ˈbiːtə/ (UK)).
Uses [link]
Computing [link]
In computing the term 'beta' is used as (usually) the last pre-release in the Software release life cycle. It is sometimes referred to as 0.x in version numbers or x.x bx where x represents a number.
Typography [link]
In some high-quality typesetting, especially in the French tradition, a typographic variant of the lowercase letter without a descender is used within a word: βίβλος is printed βίϐλος.[1]
In typesetting technical literature, it is a commonly made mistake to use the German letter ß (a double-s ligature) as a replacement for β. The two letters resemble each other in some fonts, but they are unrelated.
Mathematics and science [link]
Beta is often used to denote a variable in mathematics and physics, where it often has specific meanings for certain applications, such as representing beta radiation. In regression analysis, ⟨B⟩ symbolizes non-standardized partial slope coefficients, whereas ⟨β⟩ represents standardized (standard deviation-score form) coefficients; in both cases, the coefficients reflect the change in the criterion Y per one-unit change in the value of the associated predictor X.
Statistics [link]
In statistics, beta may represent type II error, or regression slope.
Finance [link]
Beta is used in finance as a measure of investment portfolio risk.
International Phonetic Alphabet [link]
In the International Phonetic Alphabet, Greek minuscule beta denotes a voiced bilabial fricative [β].
Meteorology [link]
The name Beta was used as a name during the 2005 Atlantic hurricane season as Hurricane Beta.
Videotape format [link]
Beta was the name of a domestic videotape format developed by Japan's Sony Corporation in the 1970s and 1980s. It competed with the VHS (Video Home System) format developed by the Japanese Victor Company (JVC), to which it eventually succumbed. The Beta format was also marketed as Betamax (Sony) and Betacord (Sanyo).
Rock Climbing Terminology [link]
The term "Beta" refers to advice on how to successfully complete a particular climbing route, boulder problem, or crux sequence.
Technical notes [link]
| description | character | Unicode | HTML |
|---|---|---|---|
| GREEK CAPITAL LETTER BETA | Β | U+0392 | Β Β |
| GREEK SMALL LETTER BETA | β | U+03B2 | β β |
| GREEK BETA SYMBOL | ϐ | U+03D0 | ϐ |
| MODIFIER LETTER SMALL BETA | ◌ᵝ | U+1D5D | ᵝ |
| GREEK SUBSCRIPT SMALL LETTER BETA | ◌ᵦ | U+1D66 | ᵦ |
References [link]
- ^ Haralambous, Yannis (1999). "From Unicode to typography, a case study: the Greek script" (PDF). p. 7. https://omega.enstb.org/yannis/pdf/boston99.pdf.
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Software release life cycle
A software release life cycle is the sum of the stages of development and maturity for a piece of computer software: ranging from its initial development to its eventual release, and including updated versions of the released version to help improve software or fix bugs still present in the software.
History
Usage of the "alpha/beta" test terminology originated at IBM. As long ago as the 1950s (and probably earlier), IBM used similar terminology for their hardware development. "A" test was the verification of a new product before public announcement. "B" test was the verification before releasing the product to be manufactured. "C" test was the final test before general availability of the product. As software became a significant part of IBM's offerings, the alpha test terminology was used to denote the pre-announcement test and beta test was used to show product readiness for general availability. Martin Belsky, a manager on some of IBM's earlier software projects claimed to have invented the terminology. IBM dropped the alpha/beta terminology during the 1960s, but by then it had received fairly wide notice. The usage of "beta test" to refer to testing done by customers was not done in IBM. Rather, IBM used the term "field test".
Beta (motorcycle manufacturer)
Beta is an Italian motorcycle manufacturer, specialising in off-road motorcycles. Beta are best known for their popular trials bikes. In 2005, they launched a range of enduro motorcycles using KTM engines. In 2010 they launched the new RR series, with a new engine made in-house. Beta motorcycles have been used by world trials champions such as Jordi Tarrés, Dougie Lampkin and Albert Cabestany.
History
Beta has its origins in 1904 as a bicycle manufacturing company named "Società Giuseppe Bianchi", originally based in Florence. The company started making motorcycles in 1948. The name Beta comes from the initials of Enzo Bianchi and Arrigo Tosi, who ran the company at that time. Focusing on two-stroke bikes through the 1950s and 1960s, the company started focusing development and production to off-road motorcycles in the 1970s.
Trials models
Beta have produced motorcycles for observed trials since the early 1980s and are now one of the leading manufacturers. Unlike the Trail and Enduro models, the trials bike have used Beta's own engines.
Trojan (video game)
Trojan (闘いの挽歌 Tatakai no Banka, literally "Requiem for Battle") is a side-scrolling action game produced by Capcom originally released as a coin operated video game in 1986. The arcade version was distributed in North America by Romstar and is included in Capcom Classics Collection Vol. 1 for PlayStation 2 and Xbox.
Home versions for DOS and the Nintendo Entertainment System were released during the same year. A ZX Spectrum version was programmed by Clive Townsend for Elite Systems in 1987 for their Durell publishing line of games, but was never released; a ROM has since been leaked from a collection of Townsend's ZX Microdrive disk files.
Plot
Set in a post-apocalyptic future during the aftermath of a nuclear war, the player takes control of a warrior who is hired to defeat the gang of an evil dictator. The hero is armed with a sword and shield, but has also been trained in the martial arts.
Gameplay
Trojan (surname)
The surname Trojan may refer to:
Trojan (brand)
Trojan is a brand name of condoms and sexual lubricants manufactured by the Church & Dwight Company. 70.5 percent of condoms purchased in United States drugstores are Trojan brand. Trojan condoms were the idea of an enterprising Presbyterian from upstate New York named Merle Leland Youngs. When Youngs moved to New York City in the second decade of the 20th century, the major condom manufacturer was Julius Schmid, who made Ramses and other reliable brands as early as the 1880s. Other elements of the condom trade were run by seedy, fly-by-night manufacturers selling cheap wares.
The Comstock Law of 1873 forbade the sale of birth control, so condoms were instead sold as protection against disease. Still, many pharmacists were loath to stock a product associated with sexual vice, and consumers often had to buy their condoms in the backrooms of bars. Trojan began advertising condoms in 1927 through an ad placed in a trade magazine for pharmacists.
Brand history
Trojan condoms were first manufactured in 1916 by Merle Leland Youngs through his company Fay and Youngs, renamed Youngs Rubber Corporation in 1919. Youngs Rubber Corporation debuted Trojan brand condoms with the image of the Trojan helmet. By 1930 latex-based materials were used. Latex provided a reliable, high quality product that was less expensive than standard rubber. The latex also allowed a shelf life of five years in comparison to three months. They claim to be America's #1 condom and trusted for over 90 years. They meet U.S. standards by the electronic measurement of durability and reliability. Trojan produces 30 different varieties of condoms.
