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https://en.wikipedia.org/wiki/Double%20factorial | In mathematics, the double factorial of a number , denoted by , is the product of all the positive integers up to that have the same parity (odd or even) as . That is,
Restated, this says that for even , the double factorial is
while for odd it is
For example, . The zero double factorial as an empty product.
The... |
https://en.wikipedia.org/wiki/Hyperfactorial | In mathematics, and more specifically number theory, the hyperfactorial of a positive integer is the product of the numbers of the form from to
Definition
The hyperfactorial of a positive integer is the product of the numbers . That is,
Following the usual convention for the empty product, the hyperfactorial of... |
https://en.wikipedia.org/wiki/Superfactorial | In mathematics, and more specifically number theory, the superfactorial of a positive integer is the product of the first factorials. They are a special case of the Jordan–Pólya numbers, which are products of arbitrary collections of factorials.
Definition
The th superfactorial may be defined as:
Following the usu... |
https://en.wikipedia.org/wiki/Immunostaining | In biochemistry, immunostaining is any use of an antibody-based method to detect a specific protein in a sample. The term "immunostaining" was originally used to refer to the immunohistochemical staining of tissue sections, as first described by Albert Coons in 1941. However, immunostaining now encompasses a broad rang... |
https://en.wikipedia.org/wiki/Draco%20%28programming%20language%29 | Draco was a shareware programming language created by Chris Gray. First developed for CP/M systems, Amiga version followed in 1987.
Although Draco, a blend of Pascal and C, was well suited for general purpose programming, its uniqueness as a language was its main weak point. Gray used Draco for the Amiga to create a p... |
https://en.wikipedia.org/wiki/Glossary%20of%20differential%20geometry%20and%20topology | This is a glossary of terms specific to differential geometry and differential topology. The following three glossaries are closely related:
Glossary of general topology
Glossary of algebraic topology
Glossary of Riemannian and metric geometry.
See also:
List of differential geometry topics
Words in italics denote a ... |
https://en.wikipedia.org/wiki/Hadamard%20matrix | In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are either +1 or −1 and whose rows are mutually orthogonal. In geometric terms, this means that each pair of rows in a Hadamard matrix represents two perpendicular vectors, while in combinatorial t... |
https://en.wikipedia.org/wiki/No%20symbol | The general prohibition sign, also known informally as the no symbol, 'do not' sign, circle-backslash symbol, nay, interdictory circle, prohibited symbol, don't do it symbol, or universal no, is a red circle with a 45-degree diagonal line inside the circle from upper-left to lower-right. It is overlaid on a pictogram t... |
https://en.wikipedia.org/wiki/Video%20projector | A video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc lamp), Xenon arc lamp, LED or solid state blue, RB, RGB or remote fiber-optic RGB la... |
https://en.wikipedia.org/wiki/Eternal%20September | Eternal September or the September that never ended is Usenet slang for a period beginning around 1993 when Internet service providers began offering Usenet access to many new users. The flood of new users overwhelmed the existing culture for online forums and the ability to enforce existing norms. AOL followed with th... |
https://en.wikipedia.org/wiki/Andrew%20Project | The Andrew Project was a distributed computing environment developed at Carnegie Mellon University beginning in 1982. It was an ambitious project for its time and resulted in an unprecedentedly vast and accessible university computing infrastructure. The project was named after Andrew Carnegie and Andrew Mellon, the fo... |
https://en.wikipedia.org/wiki/Phytochorion | A phytochorion, in phytogeography, is a geographic area with a relatively uniform composition of plant species. Adjacent phytochoria do not usually have a sharp boundary, but rather a soft one, a transitional area in which many species from both regions overlap. The region of overlap is called a vegetation tension zone... |
https://en.wikipedia.org/wiki/DECstation | The DECstation was a brand of computers used by DEC, and refers to three distinct lines of computer systems—the first released in 1978 as a word processing system, and the latter (more widely known) two both released in 1989. These comprised a range of computer workstations based on the MIPS architecture and a range of... |
https://en.wikipedia.org/wiki/Inferno%20%28operating%20system%29 | Inferno is a distributed operating system started at Bell Labs and now developed and maintained by Vita Nuova Holdings as free software under the MIT License. Inferno was based on the experience gained with Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compil... |
https://en.wikipedia.org/wiki/Solid%20geometry | Solid geometry or stereometry is the geometry of three-dimensional Euclidean space (3D space).
A solid figure is the region of 3D space bounded by a two-dimensional surface; for example, a solid ball consists of a sphere and its interior.
Solid geometry deals with the measurements of volumes of various solids, includ... |
https://en.wikipedia.org/wiki/List%20of%20factorial%20and%20binomial%20topics | This is a list of factorial and binomial topics in mathematics. See also binomial (disambiguation).
Abel's binomial theorem
Alternating factorial
Antichain
Beta function
Bhargava factorial
Binomial coefficient
Pascal's triangle
Binomial distribution
Binomial proportion confidence interval
Binomial-QMF (Daubechies wav... |
https://en.wikipedia.org/wiki/Telescoping%20series | In mathematics, a telescoping series is a series whose general term is of the form , i.e. the difference of two consecutive terms of a sequence .
As a consequence the partial sums only consists of two terms of after cancellation. The cancellation technique, with part of each term cancelling with part of the next ter... |
https://en.wikipedia.org/wiki/Oracle%20Internet%20Directory | Oracle Internet Directory (OID) is a directory service produced by Oracle Corporation, which functions compatible with LDAP version 3.
Functionality
OID makes the following features available from within an Oracle database environment:
integration with Oracle 8i and subsequent databases for ease of use and adminis... |
https://en.wikipedia.org/wiki/Linksys | Linksys Holdings, Inc., is an American brand of data networking hardware products mainly sold to home users and small businesses. It was founded in 1988 by the couple Victor and Janie Tsao, both Taiwanese immigrants to the United States. Linksys products include Wi-Fi routers, mesh Wi-Fi systems, Wifi extenders, access... |
https://en.wikipedia.org/wiki/Brownian%20motor | Brownian motors are nanoscale or molecular machines that use chemical reactions to generate directed motion in space. The theory behind Brownian motors relies on the phenomenon of Brownian motion, random motion of particles suspended in a fluid (a liquid or a gas) resulting from their collision with the fast-moving mol... |
https://en.wikipedia.org/wiki/Apache%20Groovy | Apache Groovy is a Java-syntax-compatible object-oriented programming language for the Java platform. It is both a static and dynamic language with features similar to those of Python, Ruby, and Smalltalk. It can be used as both a programming language and a scripting language for the Java Platform, is compiled to Java ... |
https://en.wikipedia.org/wiki/Nomenclature%20of%20Territorial%20Units%20for%20Statistics | Nomenclature of Territorial Units for Statistics or NUTS () is a geocode standard for referencing the administrative divisions of countries for statistical purposes. The standard, adopted in 2003, is developed and regulated by the European Union, and thus only covers the EU member states in detail. The Nomenclature of ... |
https://en.wikipedia.org/wiki/Masatoshi%20Shima | is a Japanese electronics engineer. He was one of the architects of the world's first microprocessor, the Intel 4004. In 1968, Shima worked for Busicom in Japan, and did the logic design for a specialized CPU to be translated into three-chip custom chips. In 1969, he worked with Intel's Ted Hoff and Stanley Mazor to re... |
https://en.wikipedia.org/wiki/OpenCores | OpenCores is a community developing digital open-source hardware through electronic design automation (EDA), with a similar ethos to the free software movement. OpenCores hopes to eliminate redundant design work and significantly reduce development costs. A number of companies have been reported as adopting OpenCores I... |
https://en.wikipedia.org/wiki/Behavior-based%20robotics | Behavior-based robotics (BBR) or behavioral robotics is an approach in robotics that focuses on robots that are able to exhibit complex-appearing behaviors despite little internal variable state to model its immediate environment, mostly gradually correcting its actions via sensory-motor links.
Principles
Behavior-ba... |
https://en.wikipedia.org/wiki/Pappus%27s%20centroid%20theorem | In mathematics, Pappus's centroid theorem (also known as the Guldinus theorem, Pappus–Guldinus theorem or Pappus's theorem) is either of two related theorems dealing with the surface areas and volumes of surfaces and solids of revolution.
The theorems are attributed to Pappus of Alexandria and Paul Guldin. Pappus's s... |
https://en.wikipedia.org/wiki/Skew-Hermitian%20matrix |
In linear algebra, a square matrix with complex entries is said to be skew-Hermitian or anti-Hermitian if its conjugate transpose is the negative of the original matrix. That is, the matrix is skew-Hermitian if it satisfies the relation
where denotes the conjugate transpose of the matrix . In component form, this ... |
https://en.wikipedia.org/wiki/Beat%20frequency%20oscillator | In a radio receiver, a beat frequency oscillator or BFO is a dedicated oscillator used to create an audio frequency signal from Morse code radiotelegraphy (CW) transmissions to make them audible. The signal from the BFO is mixed with the received signal to create a heterodyne or beat frequency which is heard as a tone ... |
https://en.wikipedia.org/wiki/Coding%20strand | When referring to DNA transcription, the coding strand (or informational strand) is the DNA strand whose base sequence is identical to the base sequence of the RNA transcript produced (although with thymine replaced by uracil). It is this strand which contains codons, while the non-coding strand contains anticodons. Du... |
https://en.wikipedia.org/wiki/Stack%20machine | In computer science, computer engineering and programming language implementations, a stack machine is a computer processor or a virtual machine in which the primary interaction is moving short-lived temporary values to and from a push down stack. In the case of a hardware processor, a hardware stack is used. The use o... |
https://en.wikipedia.org/wiki/Base%20station | Base station (or base radio station) is – according to the International Telecommunication Union's (ITU) Radio Regulations (RR) – a "land station in the land mobile service."
The term is used in the context of mobile telephony, wireless computer networking and other wireless communications and in land surveying. In su... |
https://en.wikipedia.org/wiki/Zariski%20tangent%20space | In algebraic geometry, the Zariski tangent space is a construction that defines a tangent space at a point P on an algebraic variety V (and more generally). It does not use differential calculus, being based directly on abstract algebra, and in the most concrete cases just the theory of a system of linear equations.
M... |
https://en.wikipedia.org/wiki/Reading%20frame | In molecular biology, a reading frame is a way of dividing the sequence of nucleotides in a nucleic acid (DNA or RNA) molecule into a set of consecutive, non-overlapping triplets. Where these triplets equate to amino acids or stop signals during translation, they are called codons.
A single strand of a nucleic acid mo... |
https://en.wikipedia.org/wiki/Ken%20Kutaragi | is a Japanese engineering technologist and businessman. He is the former chairman and CEO of Sony Interactive Entertainment (SIE), the video game division of Sony Corporation, and current president and CEO of Cyber AI Entertainment. He is known as "The Father of the PlayStation", as he oversaw the development of the or... |
https://en.wikipedia.org/wiki/Infineon%20Technologies | Infineon Technologies AG is Germany's largest semiconductor manufacturer.
The company was spun-off from Siemens AG in 1999.
Infineon has about 50,280 employees and is one of the ten largest semiconductor manufacturers worldwide. In 2021 the company achieved sales of €11.06 billion.
Markets
Infineon markets semicond... |
https://en.wikipedia.org/wiki/The%20UNIX-HATERS%20Handbook | The UNIX-HATERS Handbook is a semi-humorous edited compilation of messages to the UNIX-HATERS mailing list. The book was edited by Simson Garfinkel, Daniel Weise and Steven Strassmann and published in 1994.
Contents
The book concerns the frustrations of users of the Unix operating system. Many users had come from sy... |
https://en.wikipedia.org/wiki/Group%20scheme | In mathematics, a group scheme is a type of object from algebraic geometry equipped with a composition law. Group schemes arise naturally as symmetries of schemes, and they generalize algebraic groups, in the sense that all algebraic groups have group scheme structure, but group schemes are not necessarily connected, ... |
https://en.wikipedia.org/wiki/Geomatics | Geomatics is defined in the ISO/TC 211 series of standards as the "discipline concerned with the collection, distribution, storage, analysis, processing, presentation of geographic data or geographic information". Under another definition, it consists of products, services and tools involved in the collection, integrat... |
https://en.wikipedia.org/wiki/HOME%20STAR | HOME STAR, (also spelled HOMESTAR), informally known as Cash for Caulkers, is a United States government program proposed in November 2009 to encourage economic growth by offering incentives to homeowners and retailers for improving the energy efficiency of existing homes.
Background
In late 2009 there was a broad per... |
https://en.wikipedia.org/wiki/Copper%28I%29%20oxide | Copper(I) oxide or cuprous oxide is the inorganic compound with the formula Cu2O. It is one of the principal oxides of copper, the other being or copper(II) oxide or cupric oxide (CuO). Cuprous oxide is a red-coloured solid and is a component of some antifouling paints. The compound can appear either yellow or red, d... |
https://en.wikipedia.org/wiki/Profibus | Profibus (usually styled as PROFIBUS, as a portmanteau for Process Field Bus) is a standard for fieldbus communication in automation technology and was first promoted in 1989 by BMBF (German department of education and research) and then used by Siemens. It should not be confused with the Profinet standard for Industri... |
https://en.wikipedia.org/wiki/Quadrat | A quadrat is a frame, traditionally square, used in ecology, geography, and biology to isolate a standard unit of area for study of the distribution of an item over a large area. Modern quadrats can for example be rectangular, circular, or irregular. The quadrat is suitable for sampling plants, slow-moving animals, an... |
https://en.wikipedia.org/wiki/Computational%20number%20theory | In mathematics and computer science, computational number theory, also known as algorithmic number theory, is the study of
computational methods for investigating and solving problems in number theory and arithmetic geometry, including algorithms for primality testing and integer factorization, finding solutions to di... |
https://en.wikipedia.org/wiki/Quantum%20dot | Quantum dots (QDs), also called semiconductor nanocrystals, are semiconductor particles a few nanometres in size, having optical and electronic properties that differ from those of larger particles as a result of quantum mechanical effects. They are a central topic in nanotechnology and materials science. When the quan... |
https://en.wikipedia.org/wiki/Cultured%20meat | Cultured meat, also known as cultivated meat among other names, is a form of cellular agriculture where meat is produced by culturing animal cells in vitro. Cultured meat is produced using tissue engineering techniques pioneered in regenerative medicine. Jason Matheny popularized the concept in the early 2000s after he... |
https://en.wikipedia.org/wiki/2D%20geometric%20model | A 2D geometric model is a geometric model of an object as a two-dimensional figure, usually on the Euclidean or Cartesian plane.
Even though all material objects are three-dimensional, a 2D geometric model is often adequate for certain flat objects, such as paper cut-outs and machine parts made of sheet metal. Other e... |
https://en.wikipedia.org/wiki/Mac%20OS%208 | Mac OS 8 is an operating system that was released by Apple Computer on July 26, 1997. It includes the largest overhaul of the classic Mac OS experience since the release of System 7, approximately six years before. It places a greater emphasis on color than prior versions. Released over a series of updates, Mac OS 8 re... |
https://en.wikipedia.org/wiki/Sedimentation%20equilibrium | Sedimentation equilibrium in a suspension of different particles, such as molecules, exists when the rate of transport of each material in any one direction due to sedimentation equals the rate of transport in the opposite direction due to diffusion. Sedimentation is due to an external force, such as gravity or centrif... |
https://en.wikipedia.org/wiki/TasWireless | TasWireless is a group of wireless networking enthusiasts in Tasmania, Australia. Between them they have set up wireless community networks in both Hobart and Launceston. The group has gone through many names, tas.air, www.tas.air.net.au, TPAN (Tasmanian Public Airwave Network) and now TasWireless.
With users from s... |
https://en.wikipedia.org/wiki/BiCMOS | Bipolar CMOS (BiCMOS) is a semiconductor technology that integrates two semiconductor technologies, those of the bipolar junction transistor and the CMOS (complementary metal–oxide–semiconductor) logic gate, into a single integrated circuit. In more recent times the bipolar processes have been extended to include high ... |
https://en.wikipedia.org/wiki/1729%20%28number%29 | 1729 is the natural number following 1728 and preceding 1730. It is notably the first taxicab number.
In mathematics
1729 is the smallest taxicab number, and is variously known as Ramanujan's number or the Ramanujan–Hardy number, after an anecdote of the British mathematician G. H. Hardy when he visited Indian mathem... |
https://en.wikipedia.org/wiki/Schottky%20barrier | A Schottky barrier, named after Walter H. Schottky, is a potential energy barrier for electrons formed at a metal–semiconductor junction. Schottky barriers have rectifying characteristics, suitable for use as a diode. One of the primary characteristics of a Schottky barrier is the Schottky barrier height, denoted by ΦB... |
https://en.wikipedia.org/wiki/Differential%20centrifugation | In biochemistry and cell biology, differential centrifugation (also known as differential velocity centrifugation) is a common procedure used to separate organelles and other sub-cellular particles based on their sedimentation rate. Although often applied in biological analysis, differential centrifugation is a general... |
https://en.wikipedia.org/wiki/Microbody | A microbody (or cytosome) is a type of organelle that is found in the cells of plants, protozoa, and animals. Organelles in the microbody family include peroxisomes, glyoxysomes, glycosomes and hydrogenosomes. In vertebrates, microbodies are especially prevalent in the liver and kidney. Many membrane bound vesicles ca... |
https://en.wikipedia.org/wiki/Taxicab%20number | In mathematics, the nth taxicab number, typically denoted Ta(n) or Taxicab(n), also called the nth Ramanujan–Hardy number, is defined as the smallest integer that can be expressed as a sum of two positive integer cubes in n distinct ways. The most famous taxicab number is 1729 = Ta(2) = 13 + 123 = 93 + 103.
The name i... |
https://en.wikipedia.org/wiki/Integrated%20circuit%20packaging | Integrated circuit packaging is the final stage of semiconductor device fabrication, in which the die is encapsulated in a supporting case that prevents physical damage and corrosion. The case, known as a "package", supports the electrical contacts which connect the device to a circuit board.
The packaging stage is fo... |
https://en.wikipedia.org/wiki/Krohn%E2%80%93Rhodes%20theory | In mathematics and computer science, the Krohn–Rhodes theory (or algebraic automata theory) is an approach to the study of finite semigroups and automata that seeks to decompose them in terms of elementary components. These components correspond to finite aperiodic semigroups and finite simple groups that are combined ... |
https://en.wikipedia.org/wiki/Emoji | An emoji ( ; plural emoji or emojis; ) is a pictogram, logogram, ideogram, or smiley embedded in text and used in electronic messages and web pages. The primary function of emoji is to fill in emotional cues otherwise missing from typed conversation. Emoji exist in various genres, including facial expressions, common o... |
https://en.wikipedia.org/wiki/Northbridge%20%28computing%29 | In computing, a northbridge (also host bridge, or memory controller hub) is one of two chips comprising the core logic chipset architecture on older motherboards for personal computers. A northbridge is connected directly to a CPU via the front-side bus (FSB) to handle high-performance tasks, and is usually used in con... |
https://en.wikipedia.org/wiki/Rebus | A rebus () is a puzzle device that combines the use of illustrated pictures with individual letters to depict words or phrases. For example: the word "been" might be depicted by a rebus showing an illustrated bumblebee next to a plus sign (+) and the letter "n". It was a favourite form of heraldic expression used in th... |
https://en.wikipedia.org/wiki/Association%20for%20Progressive%20Communications | The Association for Progressive Communications (APC) is an international network of organizations that was founded in 1990 to provide communication infrastructure, including Internet-based applications, to groups and individuals who work for peace, human rights, protection of the environment, and sustainability. Pionee... |
https://en.wikipedia.org/wiki/Southbridge%20%28computing%29 | The southbridge is one of the two chips in the core logic chipset on older personal computer (PC) motherboards, the other being the northbridge. As of 2023, most personal computer devices no longer use a set of two chips, and instead have a single chip acting as the 'chipset', for example Intel's Z790 chipset.
The sou... |
https://en.wikipedia.org/wiki/PowerPC%20G4 | PowerPC G4 is a designation formerly used by Apple and Eyetech to describe a fourth generation of 32-bit PowerPC microprocessors. Apple has applied this name to various (though closely related) processor models from Freescale, a former part of Motorola. Motorola and Freescale's proper name of this family of processors ... |
https://en.wikipedia.org/wiki/Space%20frame | In architecture and structural engineering, a space frame or space structure (3D truss) is a rigid, lightweight, truss-like structure constructed from interlocking struts in a geometric pattern. Space frames can be used to span large areas with few interior supports. Like the truss, a space frame is strong because of ... |
https://en.wikipedia.org/wiki/Frequency-dependent%20selection | Frequency-dependent selection is an evolutionary process by which the fitness of a phenotype or genotype depends on the phenotype or genotype composition of a given population.
In positive frequency-dependent selection, the fitness of a phenotype or genotype increases as it becomes more common.
In negative frequency-... |
https://en.wikipedia.org/wiki/Citizen%20Lab | The Citizen Lab is an interdisciplinary laboratory based at the Munk School of Global Affairs at the University of Toronto, Canada. It was founded by Ronald Deibert in 2001. The laboratory studies information controls that impact the openness and security of the Internet and that pose threats to human rights. The organ... |
https://en.wikipedia.org/wiki/IUPAC%20nomenclature%20of%20organic%20chemistry | In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). It is published in the Nomenclature of Organic Chemistry (informally called the Blue Book). Ideally, every possible orga... |
https://en.wikipedia.org/wiki/Wound%20healing | Wound healing refers to a living organism's replacement of destroyed or damaged tissue by newly produced tissue.
In undamaged skin, the epidermis (surface, epithelial layer) and dermis (deeper, connective layer) form a protective barrier against the external environment. When the barrier is broken, a regulated sequenc... |
https://en.wikipedia.org/wiki/Canonical%20transformation | In Hamiltonian mechanics, a canonical transformation is a change of canonical coordinates that preserves the form of Hamilton's equations. This is sometimes known as form invariance. It need not preserve the form of the Hamiltonian itself. Canonical transformations are useful in their own right, and also form the basi... |
https://en.wikipedia.org/wiki/%CE%9CClinux | μClinux is a variation of the Linux kernel, previously maintained as a fork, that targets microcontrollers without a memory management unit (MMU). It was integrated into the mainline kernel as of 2.5.46; the project continues to develop patches and tools for microcontrollers. The homepage lists Linux kernel releases fo... |
https://en.wikipedia.org/wiki/Herbal | A herbal is a book containing the names and descriptions of plants, usually with information on their medicinal, tonic, culinary, toxic, hallucinatory, aromatic, or magical powers, and the legends associated with them. A herbal may also classify the plants it describes, may give recipes for herbal extracts, tinctures,... |
https://en.wikipedia.org/wiki/Turtles%20all%20the%20way%20down | "Turtles all the way down" is an expression of the problem of infinite regress. The saying alludes to the mythological idea of a World Turtle that supports a flat Earth on its back. It suggests that this turtle rests on the back of an even larger turtle, which itself is part of a column of increasingly larger turtles t... |
https://en.wikipedia.org/wiki/GNE%20%28encyclopedia%29 | GNE (originally GNUPedia) was a project to create a free content online encyclopedia, licensed under the GNU Free Documentation License, under the auspices of the Free Software Foundation. The project was proposed by Richard Stallman in December 2000 and officially started in January 2001. It was moderated by Héctor Fa... |
https://en.wikipedia.org/wiki/Canonical%20form | In mathematics and computer science, a canonical, normal, or standard form of a mathematical object is a standard way of presenting that object as a mathematical expression. Often, it is one which provides the simplest representation of an object and allows it to be identified in a unique way. The distinction between "... |
https://en.wikipedia.org/wiki/Fisher%27s%20fundamental%20theorem%20of%20natural%20selection | Fisher's fundamental theorem of natural selection is an idea about genetic variance in population genetics developed by the statistician and evolutionary biologist Ronald Fisher. The proper way of applying the abstract mathematics of the theorem to actual biology has been a matter of some debate.
It states:
"The rate ... |
https://en.wikipedia.org/wiki/Fisherian%20runaway | Fisherian runaway or runaway selection is a sexual selection mechanism proposed by the mathematical biologist Ronald Fisher in the early 20th century, to account for the evolution of ostentatious male ornamentation by persistent, directional female choice. An example is the colourful and elaborate peacock plumage compa... |
https://en.wikipedia.org/wiki/Compactor | A compactor is a machine or mechanism used to reduce the size of material such as waste material or bio mass through compaction. A trash compactor is often used by business and public places like hospitals (And in the United States also by homes) to reduce the volume of trash they produce. A baler-wrapper compactor is ... |
https://en.wikipedia.org/wiki/Zinc%20oxide | Zinc oxide is an inorganic compound with the formula . It is a white powder that is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements, rubbers, plastics, ceramics, glass, cement, lubricants, paints, sunscreens, ointments, adhesives, sealants, pigment... |
https://en.wikipedia.org/wiki/Beamline | In accelerator physics, a beamline refers to the trajectory of the beam of particles, including the overall construction of the path segment (guide tubes, diagnostic devices) along a specific path of an accelerator facility. This part is either
the line in a linear accelerator along which a beam of particles travels, ... |
https://en.wikipedia.org/wiki/Gorenstein%20ring | In commutative algebra, a Gorenstein local ring is a commutative Noetherian local ring R with finite injective dimension as an R-module. There are many equivalent conditions, some of them listed below, often saying that a Gorenstein ring is self-dual in some sense.
Gorenstein rings were introduced by Grothendieck in h... |
https://en.wikipedia.org/wiki/Fungicide | Fungicides are pesticides used to kill parasitic fungi or their spores. They are most commonly chemical compounds, but may include biocontrols and fungistatics. Fungi can cause serious damage in agriculture, resulting in critical losses of yield, quality, and profit. Fungicides are used both in agriculture and to fight... |
https://en.wikipedia.org/wiki/Refresh%20rate | The refresh rate, also known as vertical refresh rate or vertical scan rate in reference to terminology originating with the cathode-ray tubes (CRTs), is the number of times per second that a raster-based display device displays a new image. This is independent from frame rate, which describes how many images are store... |
https://en.wikipedia.org/wiki/Brokaw%20bandgap%20reference | Brokaw bandgap reference is a voltage reference circuit widely used in integrated circuits, with an output voltage around 1.25 V with low temperature dependence. This particular circuit is one type of a bandgap voltage reference, named after Paul Brokaw, the author of its first publication.
Like all temperature-indepe... |
https://en.wikipedia.org/wiki/Bandgap%20voltage%20reference | A bandgap voltage reference is a temperature independent voltage reference circuit widely used in integrated circuits. It produces a fixed (constant) voltage regardless of power supply variations, temperature changes, or circuit loading from a device. It commonly has an output voltage around 1.25V, close to the corresp... |
https://en.wikipedia.org/wiki/Low-density%20parity-check%20code | In information theory, a low-density parity-check (LDPC) code is a linear error correcting code, a method of transmitting a message over a noisy transmission channel. An LDPC code is constructed using a sparse Tanner graph (subclass of the bipartite graph). LDPC codes are capacity-approaching codes, which means that pr... |
https://en.wikipedia.org/wiki/Video%20camera%20tube | Video camera tubes were devices based on the cathode ray tube that were used in television cameras to capture television images, prior to the introduction of charge-coupled device (CCD) image sensors in the 1980s. Several different types of tubes were in use from the early 1930s, and as late as the 1990s.
In these tub... |
https://en.wikipedia.org/wiki/Map%20%28mathematics%29 | In mathematics, a map or mapping is a function in its general sense. These terms may have originated as from the process of making a geographical map: mapping the Earth surface to a sheet of paper.
The term map may be used to distinguish some special types of functions, such as homomorphisms. For example, a linear ma... |
https://en.wikipedia.org/wiki/Known-plaintext%20attack | The known-plaintext attack (KPA) is an attack model for cryptanalysis where the attacker has access to both the plaintext (called a crib) and its encrypted version (ciphertext). These can be used to reveal further secret information such as secret keys and code books. The term "crib" originated at Bletchley Park, the ... |
https://en.wikipedia.org/wiki/Mindset%20%28computer%29 | The Mindset is an Intel 80186-based MS-DOS personal computer. It was developed by the Mindset Corporation and released in spring 1984. Unlike other IBM PC compatibles of the time, it has custom graphics hardware supporting a 320x200 resolution with 16 simultaneous colors (chosen from a 512-shade palette) and hardware-a... |
https://en.wikipedia.org/wiki/Geocode | A geocode is a code that represents a geographic entity (location or object). It is a unique identifier of the entity, to distinguish it from others in a finite set of geographic entities. In general the geocode is a human-readable and short identifier.
Typical geocodes and entities represented by it:
Country code... |
https://en.wikipedia.org/wiki/Natural%20Area%20Code | The Natural Area Code, or Universal Address, is a proprietary geocode system for identifying an area anywhere on the Earth, or a volume of space anywhere around the Earth. The use of thirty alphanumeric characters instead of only ten digits makes a NAC shorter than its numerical latitude/longitude equivalent.
Two-dim... |
https://en.wikipedia.org/wiki/List%20of%20polygons%2C%20polyhedra%20and%20polytopes | A polytope is a geometric object with flat sides, which exists in any general number of dimensions. The following list of polygons, polyhedra and polytopes gives the names of various classes of polytopes and lists some specific examples.
Polytope elements
Polygon (2-polytope)
Vertex the ridge or (n−2)-face of the pol... |
https://en.wikipedia.org/wiki/Manic%20Miner | Manic Miner is a platform game written for the ZX Spectrum by Matthew Smith. It was published by Bug-Byte in 1983, then later the same year by Software Projects. The first game in the Miner Willy series, the design was inspired by Miner 2049er (1982) for the Atari 8-bit family. Retro Gamer called Manic Miner one of the... |
https://en.wikipedia.org/wiki/Installation%20testing | Most software systems have installation procedures that are needed before they can be used for their main purpose. Testing these procedures to achieve an installed software system that may be used is known as installation testing. These procedure may involve full or partial upgrades, and install/uninstall processes.
I... |
https://en.wikipedia.org/wiki/Semi-locally%20simply%20connected | In mathematics, specifically algebraic topology, semi-locally simply connected is a certain local connectedness condition that arises in the theory of covering spaces. Roughly speaking, a topological space X is semi-locally simply connected if there is a lower bound on the sizes of the “holes” in X. This condition is n... |
https://en.wikipedia.org/wiki/Ken%20Sakamura | , as of April 2017, is a Japanese professor and dean of the Faculty of Information Networking for Innovation and Design at Toyo University, Japan. He is a former professor in information science at the University of Tokyo (through March 2017). He is the creator of the real-time operating system (RTOS) architecture TRON... |
https://en.wikipedia.org/wiki/Axiomatic%20semantics | Axiomatic semantics is an approach based on mathematical logic for proving the correctness of computer programs. It is closely related to Hoare logic.
Axiomatic semantics define the meaning of a command in a program by describing its effect on assertions about the program state. The assertions are logical statements—p... |
https://en.wikipedia.org/wiki/Language%20of%20flowers | Floriography (language of flowers) is a means of cryptological communication through the use or arrangement of flowers. Meaning has been attributed to flowers for thousands of years, and some form of floriography has been practiced in traditional cultures throughout Europe, Asia, and Africa. Plants and flowers are used... |
https://en.wikipedia.org/wiki/Angle%20of%20repose | The angle of repose, or critical angle of repose, of a granular material is the steepest angle of descent or dip relative to the horizontal plane on which the material can be piled without slumping. At this angle, the material on the slope face is on the verge of sliding. The angle of repose can range from 0° to 90°. ... |
https://en.wikipedia.org/wiki/The%20Codebreakers | The Codebreakers – The Story of Secret Writing () is a book by David Kahn, published in 1967, comprehensively chronicling the history of cryptography from ancient Egypt to the time of its writing. The United States government attempted to have the book altered before publication, and it succeeded in part.
Overview
Bra... |
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