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Precise
Precision, precise or precisely may refer to: Science, and technology, and mathematics Mathematics and computing (general) * Accuracy and precision, measurement deviation from true value and its scatter * Significant figures, the number of digits that carry real information about a measurement * Precision and recall, in information retrieval: the proportion of relevant documents returned * Precision (computer science), a measure of the detail in which a quantity is expressed * Precision (statistics), a model parameter or a quantification of precision Computing products * Dell Precision, a line of Dell workstations * Precision Architecture, former name for PA-RISC, a reduced instruction set architecture developed by Hewlett-Packard * Ubuntu 12.04 "Precise Pangolin", Canonical's sixteenth release of Ubuntu Companies * Precision Air, an airline based in Tanzania * Precision Castparts Corp., a casting company based in Portland, Oregon, in the United States * Precision Drilling, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precisely (company)
Precisely Holdings, LLC, doing business as Precisely, is a software company specializing in data integrity tools, and also providing big data, high-speed sorting, ETL, data integration, data quality, data enrichment, and location intelligence offerings. The company was originally founded as Whitlow Computer Systems before rebranding as Syncsort Incorporated in 1981, and then to its current form in 2020. Its original, eponymously named product, SyncSort, was the dominant sort program for IBM mainframe computers during much of the 1970s and 1980s. Precisely is headquartered in Burlington, Massachusetts. As of 2021, the company serves more than 12,000 customers, the majority of which are large enterprises, and has more than 2,000 employees. Josh Rogers serves as CEO. History Whitlow Computer Systems: 1968–1981 In 1968, Duane Whitlow and Stan Rintel started Whitlow Computer Systems to develop software for mainframe computers.Johnson, Luanne"Oral History of Duane Whitlow" C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Significant Figures
Significant figures (also known as the significant digits, ''precision'' or ''resolution'') of a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something. If a number expressing the result of a measurement (e.g., length, pressure, volume, or mass) has more digits than the number of digits allowed by the measurement resolution, then only as many digits as allowed by the measurement resolution are reliable, and so only these can be significant figures. For example, if a length measurement gives 114.8 mm while the smallest interval between marks on the ruler used in the measurement is 1 mm, then the first three digits (1, 1, and 4, showing 114 mm) are certain and so they are significant figures. Digits which are uncertain but ''reliable'' are also considered significant figures. In this example, the last digit (8, which adds 0.8 mm) is also considered a significant figure even though the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accuracy And Precision
Accuracy and precision are two measures of '' observational error''. ''Accuracy'' is how close a given set of measurements (observations or readings) are to their '' true value'', while ''precision'' is how close the measurements are to each other. In other words, ''precision'' is a description of '' random errors'', a measure of statistical variability. ''Accuracy'' has two definitions: # More commonly, it is a description of only ''systematic errors'', a measure of statistical bias of a given measure of central tendency; low accuracy causes a difference between a result and a true value; ISO calls this ''trueness''. # Alternatively, ISO defines accuracy as describing a combination of both types of observational error (random and systematic), so high accuracy requires both high precision and high trueness. In the first, more common definition of "accuracy" above, the concept is independent of "precision", so a particular set of data can be said to be accurate, precise, both ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ubuntu Version History
Ubuntu releases are made semiannually by Canonical Ltd, the developers of the Ubuntu operating system, using the year and month of the release as a version number. The first Ubuntu release, for example, was Ubuntu 4.10 and was released on 20 October 2004. Consequently, version numbers for future versions are provisional; if the release is delayed until a different month (or even year) to that planned, the version number will change accordingly. Canonical schedules Ubuntu releases to occur approximately one month after GNOME releases, resulting in each Ubuntu release including a newer version of GNOME. Every fourth release, occurring in the second quarter of even-numbered years, has been designated as a long-term support (LTS) release. The desktop version of LTS releases for 10.04 and earlier were supported for three years, with server version support for five years. LTS releases 12.04 and newer are freely supported for five years. Through the ESM paid option, support can be e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precision Club
Precision Club is a bidding system in the game of contract bridge. It is a strong club system developed in 1969 for C. C. Wei by Alan Truscott, and used by Taiwan teams in 1969. Their success in placing second at the 1969 Bermuda Bowl (and Wei's multimillion-dollar publicity campaign) launched the system's popularity. The central feature of the Precision system is that an opening bid of one club is used for any hand with 16 or more high card points (HCP), regardless of distribution. An opening bid of one of a major suit signifies a five-card suit and 11–15 HCP. A one notrump opening bid signifies a balanced hand (no five-card major suit) and 13–15 HCP. Popularity After the success of Taiwan teams in 1969 and 1970 Bermuda Bowls with the system, the entire Italian Blue team switched to Precision Club and won yet another World Team Olympiad in 1972. The modifications to the system were made chiefly by Benito Garozzo and he titled it Super Precision. Today, multiple world cham ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precisionism
Precisionism was a modernist art movement that emerged in the United States after World War I. Influenced by Cubism, Purism, and Futurism, Precisionist artists reduced subjects to their essential geometric shapes, eliminated detail, and often used planes of light to create a sense of crisp focus and suggest the sleekness and sheen of machine forms. At the height of its popularity during the 1920s and early 1930s, Precisionism celebrated the new American landscape of skyscrapers, bridges, and factories in a form that has also been called "Cubist-Realism." The term "Precisionism" was first coined in the mid-1920s, possibly by Museum of Modern Art director Alfred H. Barr although according to Amy Dempsey the term "Precisionism" was coined by Charles Sheeler. Painters working in this style were also known as the "Immaculates", which was the more commonly used term at the time. The stiffness of both art-historical labels suggests the difficulties contemporary critics had in attemptin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PA-RISC
PA-RISC is an instruction set architecture (ISA) developed by Hewlett-Packard. As the name implies, it is a reduced instruction set computer (RISC) architecture, where the PA stands for Precision Architecture. The design is also referred to as HP/PA for Hewlett Packard Precision Architecture. The architecture was introduced on 26 February 1986, when the HP 3000 Series 930 and HP 9000 Model 840 computers were launched featuring the first implementation, the TS1. PA-RISC has been succeeded by the Itanium (originally IA-64) ISA, jointly developed by HP and Intel. HP stopped selling PA-RISC-based HP 9000 systems at the end of 2008 but supported servers running PA-RISC chips until 2013. History In the late 1980s, HP was building four series of computers, all based on CISC CPUs. One line was the IBM PC compatible Intel i286-based Vectra Series, started in 1986. All others were non-Intel systems. One of them was the HP Series 300 of Motorola 68000-based workstations, another ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dell Precision
Dell Precision is a series of computer workstations for CAD/architecture/ CG professionals, or as small-scale business servers. Dell Precision Mobile Workstations 3000, 5000, 7000 Series (2015–current) Dell announced a new series of Latitude laptops in August 2013: the 3000 series, the 5000 series and the 7000 series. In October 2015, Dell announced the first generation of Precision mobile workstations of this series with model numbers 3510, 5510, 7510 and 7710. In January 2017, Dell announced the second generation laptops in this series with model numbers 3520, 5520, 7520 and 7720. In April 2018, Dell announced the third generation of laptops in this series with model numbers 3530, 5530, 7530 and 7730. In May 2019 Dell announced the 4th Generation of the 55xx and 7xxx series mobile workstations with the release of the 5540, 7540 and 7740 models. Docks/Port Replicators - All first generation (xx10) and second generation (xx20) Precision mobile workstation la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precision Air
Precision Air Services Plc (operating as Precision Air; DSE:PAL) is a Tanzanian airline based at Julius Nyerere International Airport in Dar es Salaam. The airline operates scheduled passenger services to Nairobi, Entebbe, and to various airports and airstrips throughout Tanzania. History Precision Air was incorporated in Tanzania in January 1991 as a private airline and started operations in 1993. At first, it operated as a private charter air transport company but in November 1993 changed to offer scheduled services to serve the growing tourist market. In 2006, Precision Air became the first Tanzanian airline to pass the IATA Operational Safety Audit. In April 2011, the airline became a public company. Corporate affairs Ownership Precision Air was privately owned until 2003, when Kenya Airways acquired a 49 percent stake, paying US$2 million, weeks after its rival South African Airways acquired a 49 percent stake in Air Tanzania for US$20 million. The remaining 51 percen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precision Castparts Corp
Precision Castparts Corp. is an American industrial goods and metal fabrication company that manufactures investment castings, forged components, and airfoil castings for use in the aerospace, industrial gas turbine, and defense industries. In 2009 it ranked 362nd on the Fortune 500 list, and 11th in the aerospace and defense industry.Precision Castparts. Fortune 500: 2009. CNNMoney.com. Retrieved on April 20, 2009. In 2015 it ranked 322nd overall and 9th in the aerospace and defense industry. In 2014 it ranked 133rd on the S&P 500 based on market capitalization. In January 2016, the company became a subsidiary of |
Precision (statistics)
In statistics, the precision matrix or concentration matrix is the matrix inverse of the covariance matrix or dispersion matrix, P = \Sigma^. For univariate distributions, the precision matrix degenerates into a scalar precision, defined as the reciprocal of the variance, p = \frac. Other summary statistics of statistical dispersion also called ''precision'' (or ''imprecision'') include the reciprocal of the standard deviation, p = \frac; the standard deviation itself and the relative standard deviation; as well as the standard error and the confidence interval (or its half-width, the margin of error). Usage One particular use of the precision matrix is in the context of Bayesian analysis of the multivariate normal distribution: for example, Bernardo & Smith prefer to parameterise the multivariate normal distribution in terms of the precision matrix, rather than the covariance matrix, because of certain simplifications that then arise. For instance, if both the prior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Precision Monolithics
Precision Monolithics, Inc. also known as PMI, was an American company based in Santa Clara, California, that developed and produced mixed signal and linear integrated circuits (ICs). It was a pioneer in the fields of digital-to-analog converters and operational amplifiers. The company was founded in 1969 by Marv Rudin and Garth Wilson, who had both left Fairchild Semiconductor at the end of 1968. Wilson was circuit design manager under Rudin, who managed linear circuit R&D at the Fairchild Semiconductor R&D Laboratory in Palo Alto from 1966 to 1968. At the beginning, Wilson was vice president responsible for engineering and production, and reported to Rudin, who was president and marketing manager. Jim Grugan from Fairchild joined shortly after incorporation as vice president of administration, responsible for finance, facilities and purchasing. Immediately after financing and incorporation, they offered founder stock and hired IC designers George Erdi from Fairchild and Dan Do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
