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David Johnson-Davies
David Johnson-Davies is a British computer scientist and journalist. Early life and education David Johnson-Davies was born in London and has three children. He studied Experimental Psychology in Cambridge (where he currently resides), and became a researcher at the Medical Research Council Applied Psychology Unit (now the MRC Cognition and Brain Sciences Unit). Career In 1980, Johnson-Davies completed a PhD and then went on to join the computer company Acorn, developers of the BBC Microcomputer. Johnson-Davies was the founder and managing director of Acornsoft, publisher of video games such as Elite and the VIEW business software range by Mark Colton. In 1982, Johnson-Davies wrote ''Practical Programs for the BBC Computer and Acorn Atom''. In 1986, he left Acornsoft and establisheHuman Computer Interfaceshortly afterwards. The company developed Macintosh-based programs compatible with BBC BASIC and BBC Micro software, disks and networks, including for Hitachi and Royal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brackets
A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'right' bracket or, alternatively, an "opening bracket" or "closing bracket", respectively, depending on the directionality of the context. Specific forms of the mark include parentheses (also called "rounded brackets"), square brackets, curly brackets (also called 'braces'), and angle brackets (also called 'chevrons'), as well as various less common pairs of symbols. As well as signifying the overall class of punctuation, the word "bracket" is commonly used to refer to a specific form of bracket, which varies from region to region. In most English-speaking countries, an unqualified word "bracket" refers to the parenthesis (round bracket); in the United States, the square bracket. Various forms of brackets are used in mathematics, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acorn User
''Acorn User'' magazine was founded by Acorn Computers in 1982, contract-published by Addison-Wesley, to coincide with the launch of the BBC Micro. It covered the range of Acorn home computers, the BBC Micro and Atom at first and later the Electron, Archimedes and Risc PC. History The first issue was dated July/August 1982. From the April 1984 issue, the magazine came under the control of Redwood Publishing, a company recently founded by Michael Potter (a former publisher at Haymarket Publishing), Christopher Ward (a former editor of the ''Daily Express'' and a non-executive director of Acorn) and Chris Curry (one of the founders of Acorn). In 1989, the name changed to ''BBC Acorn User'', reflecting the fact that the commercial arm of the BBC, BBC Enterprises, took control of Redwood to expand its publishing activities. The magazine lost the BBC branding when it was sold to Europress, publisher of rival title ''Acorn Computing'', coinciding with its January 1994 issue. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journalists From London
A journalist is an individual that collects/gathers information in form of text, audio, or pictures, processes them into a news-worthy form, and disseminates it to the public. The act or process mainly done by the journalist is called journalism. Roles Journalists can be broadcast, print, advertising, and public relations personnel, and, depending on the form of journalism, the term ''journalist'' may also include various categories of individuals as per the roles they play in the process. This includes reporters, correspondents, citizen journalists, editors, editorial-writers, columnists, and visual journalists, such as photojournalists (journalists who use the medium of photography). A reporter is a type of journalist who researches, writes and reports on information in order to present using sources. This may entail conducting interviews, information-gathering and/or writing articles. Reporters may split their time between working in a newsroom, or from home, and going out ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Computer Scientists
British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English, the English language as spoken and written in the United Kingdom or, more broadly, throughout the British Isles * Celtic Britons, an ancient ethno-linguistic group * Brittonic languages, a branch of the Insular Celtic language family (formerly called British) ** Common Brittonic, an ancient language Other uses *'' Brit(ish)'', a 2018 memoir by Afua Hirsch *People or things associated with: ** Great Britain, an island ** United Kingdom, a sovereign state ** Kingdom of Great Britain (1707–1800) ** United Kingdom of Great Britain and Ireland (1801–1922) See also * Terminology of the British Isles * Alternative names for the British * English (other) * Britannic (other) * British Isles * Brit (other) * Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Related categories * :Year of birth missing (living people) / :Year of birth unknown * :Date of birth missing (living people) / :Date of birth unknown * :Place of birth missing (living people) / :Place of birth unknown * :Year of death missing / :Year of death unknown * :Date of death missing / :Date of death unknown * :Place of death missing / :Place of death unknown * :Missing middle or first names See also * :Dead people * :Template:L, which generates this category or death years, and birth year and sort keys. : {{DEFAULTSORT:Living people 21st-century people People by status ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Identifont
The Identifont web site is an online directory of typefaces, with main function a tool to help identify a font from a sample. It has been described as the largest Internet directory of typefaces. Identifont may be used to find a font similar to a given one. It also allows potential purchasers to make comparisons of typeface specifications. Identifont has an index of years from 1470 to 2017 and describes the most popular font of each year. History The site was launched in 2000, and was designed by David Johnson-Davies based on AI techniques. Research on its application by graphic design students was published in 2006. Identification technique The site enables the user to identify typefaces by walking through a series of questions. The principle of identification is to use distinctive features of given letters, and the site returns the designer and manufacturer of the font, as well as the name. Technically it is an application of the Common Lisp Hypermedia Server. The service ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Deutsch
David Elieser Deutsch ( ; born 18 May 1953) is a British physicist at the University of Oxford. He is a Visiting Professor in the Department of Atomic and Laser Physics at the Centre for Quantum Computation (CQC) in the Clarendon Laboratory of the University of Oxford. He pioneered the field of quantum computation by formulating a description for a quantum Turing machine, as well as specifying an algorithm designed to run on a quantum computer. He has also proposed the use of entangled states and Bell's theorem for quantum key distribution and is a proponent of the many-worlds interpretation of quantum mechanics. Early life and education Deutsch was born into a Jewish family in Haifa, Israel on 18 May 1953, the son of Oskar and Tikva Deutsch. In London, David attended Geneva House school in Cricklewood (his parents owned and ran the Alma restaurant on Cricklewood Broadway), followed by William Ellis School in Highgate (then a voluntary aided school in north London) before ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fractal
In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illustrated in successive magnifications of the Mandelbrot set. This exhibition of similar patterns at increasingly smaller scales is called self-similarity, also known as expanding symmetry or unfolding symmetry; if this replication is exactly the same at every scale, as in the Menger sponge, the shape is called affine self-similar. Fractal geometry lies within the mathematical branch of measure theory. One way that fractals are different from finite geometric figures is how they scale. Doubling the edge lengths of a filled polygon multiplies its area by four, which is two (the ratio of the new to the old side length) raised to the power of two (the conventional dimension of the filled polygon). Likewise, if the radius of a filled s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newton's Method
In numerical analysis, Newton's method, also known as the Newton–Raphson method, named after Isaac Newton and Joseph Raphson, is a root-finding algorithm which produces successively better approximations to the roots (or zeroes) of a real-valued function. The most basic version starts with a single-variable function defined for a real variable , the function's derivative , and an initial guess for a root of . If the function satisfies sufficient assumptions and the initial guess is close, then :x_ = x_0 - \frac is a better approximation of the root than . Geometrically, is the intersection of the -axis and the tangent of the graph of at : that is, the improved guess is the unique root of the linear approximation at the initial point. The process is repeated as :x_ = x_n - \frac until a sufficiently precise value is reached. This algorithm is first in the class of Householder's methods, succeeded by Halley's method. The method can also be extended to complex fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benoit Mandelbrot
Benoit B. Mandelbrot (20 November 1924 – 14 October 2010) was a Polish-born French-American mathematician and polymath with broad interests in the practical sciences, especially regarding what he labeled as "the art of roughness" of physical phenomena and "the uncontrolled element in life". He referred to himself as a "fractalist" and is recognized for his contribution to the field of fractal geometry, which included coining the word "fractal", as well as developing a theory of "roughness and self-similarity" in nature. In 1936, at the age of 11, Mandelbrot and his family emigrated from Warsaw, Poland, to France. After World War II ended, Mandelbrot studied mathematics, graduating from universities in Paris and in the United States and receiving a master's degree in aeronautics from the California Institute of Technology. He spent most of his career in both the United States and France, having dual French and American citizenship. In 1958, he began a 35-year career at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Mail
, kw, Postya Riel, ga, An Post Ríoga , logo = Royal Mail.svg , logo_size = 250px , type = Public limited company , traded_as = , foundation = , founder = Henry VIII , location = London, England, UK , key_people = * Keith Williams (Non-executive Chairman) * Simon Thompson (CEO) , area_served = United Kingdom , industry = Postal services, courier , products = , services = Letter post, parcel service, EMS, delivery, freight forwarding, third-party logistics , revenue = £12.638 billion(2021) , operating_income = £611 million (2021) , net_income = £620 million (2021) , num_employees = 158,592 (2021) , parent = , divisions = * Royal Mail * Parcelforce Worldwide , subsid = * General Logistics Systems * eCourier * StoreFeeder * Intersoft Systems & Programming , homepage = , dissolved = , footnotes = International Distributions Services plc (formerly Royal Mail plc), trading as Royal Mail, is a British multinational post ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Scientist
A computer scientist is a person who is trained in the academic study of computer science. Computer scientists typically work on the theoretical side of computation, as opposed to the hardware side on which computer engineers mainly focus (although there is overlap). Although computer scientists can also focus their work and research on specific areas (such as algorithm and data structure development and design, software engineering, information theory, database theory, computational complexity theory, numerical analysis, programming language theory, computer graphics, and computer vision), their foundation is the theoretical study of computing from which these other fields derive. A primary goal of computer scientists is to develop or validate models, often mathematical, to describe the properties of computational systems ( processors, programs, computers interacting with people, computers interacting with other computers, etc.) with an overall objective of discoverin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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