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https://en.wikipedia.org/wiki/Periodogram | In signal processing, a periodogram is an estimate of the spectral density of a signal. The term was coined by Arthur Schuster in 1898. Today, the periodogram is a component of more sophisticated methods (see spectral estimation). It is the most common tool for examining the amplitude vs frequency characteristics of F... |
https://en.wikipedia.org/wiki/H%C3%A9non%20map | In mathematics, the Hénon map, sometimes called Hénon–Pomeau attractor/map, is a discrete-time dynamical system. It is one of the most studied examples of dynamical systems that exhibit chaotic behavior. The Hénon map takes a point in the plane and maps it to a new point
The map depends on two parameters, and , whic... |
https://en.wikipedia.org/wiki/Primitive%20ideal | In mathematics, specifically ring theory, a left primitive ideal is the annihilator of a (nonzero) simple left module. A right primitive ideal is defined similarly. Left and right primitive ideals are always two-sided ideals.
Primitive ideals are prime. The quotient of a ring by a left primitive ideal is a left primit... |
https://en.wikipedia.org/wiki/Semiprimitive%20ring | In algebra, a semiprimitive ring or Jacobson semisimple ring or J-semisimple ring is a ring whose Jacobson radical is zero. This is a type of ring more general than a semisimple ring, but where simple modules still provide enough information about the ring. Rings such as the ring of integers are semiprimitive, and an ... |
https://en.wikipedia.org/wiki/Primitive%20ring | In the branch of abstract algebra known as ring theory, a left primitive ring is a ring which has a faithful simple left module. Well known examples include endomorphism rings of vector spaces and Weyl algebras over fields of characteristic zero.
Definition
A ring R is said to be a left primitive ring if it has a fai... |
https://en.wikipedia.org/wiki/142%20%28number%29 | 142 (one hundred [and] forty-two) is the natural number following 141 and preceding 143.
In mathematics
There are 142 connected functional graphs on four labeled vertices, 142 planar graphs with 6 unlabeled vertices, and 142 partial involutions on five elements.
See also
The year AD 142 or 142 BC
List of highways n... |
https://en.wikipedia.org/wiki/Grammy%20Award%20for%20Best%20Engineered%20Album%2C%20Classical | The Grammy Award for Best Engineered Recording, Classical has been awarded since 1959. The award had several minor name changes:
In 1959 the award was known as Best Engineered Record (Classical)
From 1960 to 1962 it was awarded as Best Engineering Contribution - Classical Recording
From 1963 to 1964 it was awarded a... |
https://en.wikipedia.org/wiki/Boulder%20Dash%20%28video%20game%29 | Boulder Dash is a 2D maze-puzzle video game released in 1984 by First Star Software for Atari 8-bit computers. It was created by Canadian developers Peter Liepa and Chris Gray. The player controls Rockford, who collects treasures while evading hazards.
Boulder Dash was ported to many 8-bit and 16-bit systems and turne... |
https://en.wikipedia.org/wiki/Aliquot%20sequence | In mathematics, an aliquot sequence is a sequence of positive integers in which each term is the sum of the proper divisors of the previous term. If the sequence reaches the number 1, it ends, since the sum of the proper divisors of 1 is 0.
Definition and overview
The aliquot sequence starting with a positive integer ... |
https://en.wikipedia.org/wiki/Grammy%20Award%20for%20Best%20Engineered%20Album%2C%20Non-Classical | The Grammy Award for Best Engineered Album, Non-Classical has been awarded since 1959. The award had several minor name changes:
In 1959, the award was known as Best Engineered Record – Non-Classical
In 1960, it was awarded as Best Engineering Contribution – Other Than Classical or Novelty
From 1961 to 1962, it was ... |
https://en.wikipedia.org/wiki/Processor%20register | A processor register is a quickly accessible location available to a computer's processor. Registers usually consist of a small amount of fast storage, although some registers have specific hardware functions, and may be read-only or write-only. In computer architecture, registers are typically addressed by mechanisms ... |
https://en.wikipedia.org/wiki/Non-access%20stratum | Non-access stratum (NAS) is a functional layer in the NR, LTE, UMTS and GSM wireless telecom protocol stacks between the core network and user equipment.
This layer is used to manage the establishment of communication sessions and for maintaining continuous communications with the user equipment as it moves. The NAS ... |
https://en.wikipedia.org/wiki/OSEK | OSEK (Offene Systeme und deren Schnittstellen für die Elektronik in Kraftfahrzeugen; English: "Open Systems and their Interfaces for the Electronics in Motor Vehicles") is a standards body that has produced specifications for an embedded operating system, a communications stack, and a network management protocol for au... |
https://en.wikipedia.org/wiki/Action%20semantics | Action semantics is a framework for the formal specification of semantics of programming languages invented by David Watt and Peter D. Mosses in the 1990s. It is a mixture of denotational, operational and algebraic semantics.
Action Semantics aims to be pragmatic. Action-Semantic Descriptions (ASDs) are designed to sc... |
https://en.wikipedia.org/wiki/Surface%20modification | Surface modification is the act of modifying the surface of a material by bringing physical, chemical or biological characteristics different from the ones originally found on the surface of a material.
This modification is usually made to solid materials, but it is possible to find examples of the modification to the... |
https://en.wikipedia.org/wiki/POSTNET | POSTNET (Postal Numeric Encoding Technique) is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars. Most often, the delivery point is added, usually being the last two digits of the address or PO box number.
The... |
https://en.wikipedia.org/wiki/User-Agent%20header | In computing, the User-Agent header is an HTTP header intended to identify the user agent responsible for making a given HTTP request. Whereas the character sequence User-Agent comprises the name of the header itself, the header value that a given user agent uses to identify itself is colloquially known as its user ag... |
https://en.wikipedia.org/wiki/IBM%207950%20Harvest | The IBM 7950, also known as Harvest, was a one-of-a-kind adjunct to the Stretch computer which was installed at the United States National Security Agency (NSA). Built by IBM, it was delivered in 1962 and operated until 1976, when it was decommissioned. Harvest was designed to be used for cryptanalysis.
Development
In... |
https://en.wikipedia.org/wiki/Cover%20%28telecommunications%29 | In telecommunications and tradecraft, cover is the technique of concealing or altering the characteristics of communications patterns for the purpose of denying an unauthorized receiver information that would be of value.
The purpose of cover is not to make the communication secure, but to make it look like noise, ren... |
https://en.wikipedia.org/wiki/40-bit%20encryption | 40-bit encryption refers to a (now broken) key size of forty bits, or five bytes, for symmetric encryption; this represents a relatively low level of security. A forty bit length corresponds to a total of 240 possible keys. Although this is a large number in human terms (about a trillion), it is possible to break this ... |
https://en.wikipedia.org/wiki/Micron%20Technology | Micron Technology, Inc. is an American producer of computer memory and computer data storage including dynamic random-access memory, flash memory, and USB flash drives. It is headquartered in Boise, Idaho. Its consumer products, including the Ballistix line of memory modules, are marketed under the Crucial brand. Micro... |
https://en.wikipedia.org/wiki/Search/Retrieve%20Web%20Service | Search/Retrieve Web service (SRW) is a web service for search and retrieval. SRW provides a SOAP interface to queries, to augment the URL interface provided by its companion protocol Search/Retrieve via URL (SRU). Queries in SRU and SRW are expressed using the Contextual Query Language (CQL).
Standards for SRW, SRU, ... |
https://en.wikipedia.org/wiki/Prime%20ring | In abstract algebra, a nonzero ring R is a prime ring if for any two elements a and b of R, arb = 0 for all r in R implies that either a = 0 or b = 0. This definition can be regarded as a simultaneous generalization of both integral domains and simple rings.
Although this article discusses the above definition, prime ... |
https://en.wikipedia.org/wiki/Matrix%20ring | In abstract algebra, a matrix ring is a set of matrices with entries in a ring R that form a ring under matrix addition and matrix multiplication . The set of all matrices with entries in R is a matrix ring denoted Mn(R) (alternative notations: Matn(R) and ). Some sets of infinite matrices form infinite matrix rings.... |
https://en.wikipedia.org/wiki/Domain%20%28ring%20theory%29 | In algebra, a domain is a nonzero ring in which implies or . (Sometimes such a ring is said to "have the zero-product property".) Equivalently, a domain is a ring in which 0 is the only left zero divisor (or equivalently, the only right zero divisor). A commutative domain is called an integral domain. Mathematical... |
https://en.wikipedia.org/wiki/Sympatric%20speciation | Sympatric speciation is the evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region. In evolutionary biology and biogeography, sympatric and sympatry are terms referring to organisms whose ranges overlap so that they occur together at least in some places.... |
https://en.wikipedia.org/wiki/Communication%20source | A source or sender is one of the basic concepts of communication and information processing. Sources are objects which encode message data and transmit the information, via a channel, to one or more observers (or receivers).
In the strictest sense of the word, particularly in information theory, a source is a process... |
https://en.wikipedia.org/wiki/Directional%20derivative | A directional derivative is a concept in multivariable calculus that measures the rate at which a function changes in a particular direction at a given point.
The directional derivative of a multivariable differentiable (scalar) function along a given vector v at a given point x intuitively represents the instantaneou... |
https://en.wikipedia.org/wiki/List%20of%20wiki%20software |
Standard wiki programs, by programming language
JavaScript-based
TiddlyWiki is a HTML-JavaScript-based server-less wiki in which the entire site/wiki is contained in a single file, or as a Node.js-based wiki application. It is designed for maximum customization possibilities.
Wiki.js is an open-source, Node.js-ba... |
https://en.wikipedia.org/wiki/Inverted%20sugar%20syrup | Inverted sugar syrup, also called invert syrup, invert sugar, simple syrup, sugar syrup, sugar water, bar syrup, syrup USP, or sucrose inversion, is a syrup mixture of the monosaccharides glucose and fructose, that is made by hydrolytic saccharification of the disaccharide sucrose. This mixture's optical rotation is op... |
https://en.wikipedia.org/wiki/Magnetic%20cartridge | A magnetic cartridge, more commonly called a phonograph cartridge or phono cartridge or (colloquially) a pickup, is an electromechanical transducer that is used to play records on a turntable.
The cartridge contains a removable or permanently mounted stylus, the tip - usually a gemstone, such as diamond or sapphire - ... |
https://en.wikipedia.org/wiki/Dynode | A dynode is an electrode in a vacuum tube that serves as an electron multiplier through secondary emission. The first tube to incorporate a dynode was the dynatron, an ancestor of the magnetron, which used a single dynode. Photomultiplier and video camera tubes generally include a series of dynodes, each at a more po... |
https://en.wikipedia.org/wiki/Codd%27s%2012%20rules | Codd's twelve rules are a set of thirteen rules (numbered zero to twelve) proposed by Edgar F. Codd, a pioneer of the relational model for databases, designed to define what is required from a database management system in order for it to be considered relational, i.e., a relational database management system (RDBMS). ... |
https://en.wikipedia.org/wiki/Open-source%20journalism | Open-source journalism, a close cousin to citizen journalism or participatory journalism, is a term coined in the title of a 1999 article by Andrew Leonard of Salon.com. Although the term was not actually used in the body text of Leonard's article, the headline encapsulated a collaboration between users of the internet... |
https://en.wikipedia.org/wiki/Mining%20engineering | Mining in the engineering discipline is the extraction of minerals from underneath, open pit, above, or on the ground. Mining engineering is associated with many other disciplines, such as mineral processing, exploration, excavation, geology, and metallurgy, geotechnical engineering and surveying. A mining engineer may... |
https://en.wikipedia.org/wiki/Jacobson%20density%20theorem | In mathematics, more specifically non-commutative ring theory, modern algebra, and module theory, the Jacobson density theorem is a theorem concerning simple modules over a ring .
The theorem can be applied to show that any primitive ring can be viewed as a "dense" subring of the ring of linear transformations of a ve... |
https://en.wikipedia.org/wiki/Newtonian%20limit | In physics, the Newtonian limit is a mathematical approximation applicable to physical systems exhibiting (1) weak gravitation, (2) objects moving slowly compared to the speed of light, and (3) slowly changing (or completely static) gravitational fields. Under these conditions, Newton's law of universal gravitation ma... |
https://en.wikipedia.org/wiki/Eugene%20Koonin | Eugene Viktorovich Koonin (Russian: Евге́ний Ви́кторович Ку́нин; born October 26, 1956) is a Russian-American biologist and Senior Investigator at the National Center for Biotechnology Information (NCBI). He is a recognised expert in the field of evolutionary and computational biology.
Education
Koonin gained a Master... |
https://en.wikipedia.org/wiki/Simics | Simics is a full-system simulator or virtual platform used to run unchanged production binaries of the target hardware. Simics was originally developed by the Swedish Institute of Computer Science (SICS), and then spun off to Virtutech for commercial development in 1998. Virtutech was acquired by Intel in 2010. Current... |
https://en.wikipedia.org/wiki/List%20of%20engineering%20societies | An engineering society is a professional organization for engineers of various disciplines. Some are umbrella type organizations which accept many different disciplines, while others are discipline-specific. Many award professional designations, such as European Engineer, professional engineer, chartered engineer, inco... |
https://en.wikipedia.org/wiki/Eckmann%E2%80%93Hilton%20argument | In mathematics, the Eckmann–Hilton argument (or Eckmann–Hilton principle or Eckmann–Hilton theorem) is an argument about two unital magma structures on a set where one is a homomorphism for the other. Given this, the structures are the same, and the resulting magma is a commutative monoid. This can then be used to prov... |
https://en.wikipedia.org/wiki/Silver%20sulfide | Silver sulfide is an inorganic compound with the formula . A dense black solid, it is the only sulfide of silver. It is useful as a photosensitizer in photography. It constitutes the tarnish that forms over time on silverware and other silver objects. Silver sulfide is insoluble in most solvents, but is degraded by st... |
https://en.wikipedia.org/wiki/Tribology | Tribology is the science and engineering of understanding friction, lubrication and wear phenomena for interacting surfaces in relative motion. It is highly interdisciplinary, drawing on many academic fields, including physics, chemistry, materials science, mathematics, biology and engineering. The fundamental objects ... |
https://en.wikipedia.org/wiki/Artinian%20ring | In mathematics, specifically abstract algebra, an Artinian ring (sometimes Artin ring) is a ring that satisfies the descending chain condition on (one-sided) ideals; that is, there is no infinite descending sequence of ideals. Artinian rings are named after Emil Artin, who first discovered that the descending chain con... |
https://en.wikipedia.org/wiki/JIS%20encoding | In computing, JIS encoding refers to several Japanese Industrial Standards for encoding the Japanese language. Strictly speaking, the term means either:
A set of standard coded character sets for Japanese, notably:
JIS X 0201, the Japanese version of ISO 646 (ASCII) containing the base 7-bit ASCII characters (with s... |
https://en.wikipedia.org/wiki/Bran | Bran, also known as miller's bran, is the hard layers of cereal grain surrounding the endosperm. It consists of the combined aleurone and pericarp. Corn (maize) bran also includes the pedicel (tip cap). Along with the germ, it is an integral part of whole grains, and is often produced as a byproduct of milling in the p... |
https://en.wikipedia.org/wiki/Schl%C3%A4fli%20symbol | In geometry, the Schläfli symbol is a notation of the form that defines regular polytopes and tessellations.
The Schläfli symbol is named after the 19th-century Swiss mathematician Ludwig Schläfli, who generalized Euclidean geometry to more than three dimensions and discovered all their convex regular polytopes, incl... |
https://en.wikipedia.org/wiki/Automatic%20Packet%20Reporting%20System | Automatic Packet Reporting System (APRS) is an amateur radio-based system for real time digital communications of information of immediate value in the local area. Data can include object Global Positioning System (GPS) coordinates, weather station telemetry, text messages, announcements, queries, and other telemetry.... |
https://en.wikipedia.org/wiki/General%20Mobile%20Radio%20Service | The General Mobile Radio Service (GMRS) is a land-mobile FM UHF radio service designed for short-range two-way voice communication and authorized under part 95 of the US FCC code. It requires a license in the United States, but some GMRS compatible equipment can be used license-free in Canada. The US GMRS license is i... |
https://en.wikipedia.org/wiki/Backhoe | A backhoe—also called rear actor or back actor—is a type of excavating equipment, or digger, consisting of a digging bucket on the end of a two-part articulated arm. It is typically mounted on the back of a tractor or front loader, the latter forming a "backhoe loader" (a US term, but known as a "JCB" in Ireland and th... |
https://en.wikipedia.org/wiki/Nd%3AYAG%20laser | Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, Nd(III), typically replaces a small fraction (1%) of the yttrium ions in the host crystal structure of the yttrium aluminum garnet (YAG), since the tw... |
https://en.wikipedia.org/wiki/Hasse%20principle | In mathematics, Helmut Hasse's local–global principle, also known as the Hasse principle, is the idea that one can find an integer solution to an equation by using the Chinese remainder theorem to piece together solutions modulo powers of each different prime number. This is handled by examining the equation in the com... |
https://en.wikipedia.org/wiki/Viktor%20Schauberger | Viktor Schauberger (30 June 1885 – 25 September 1958) was an Austrian forest caretaker, naturalist, philosopher, inventor and pseudoscientist.
Early life
Schauberger was born in Holzschlag, Upper Austria on 30 June 1885. His parents were Leopold Schauberger and Josefa, née Klimitsch. From 1891 to 1897 he attended th... |
https://en.wikipedia.org/wiki/Furfural | Furfural is an organic compound with the formula C4H3OCHO. It is a colorless liquid, although commercial samples are often brown. It has an aldehyde group attached to the 2-position of furan. It is a product of the dehydration of sugars, as occurs in a variety of agricultural byproducts, including corncobs, oat, wheat ... |
https://en.wikipedia.org/wiki/List%20of%20exponential%20topics | This is a list of exponential topics, by Wikipedia page. See also list of logarithm topics.
Accelerating change
Approximating natural exponents (log base e)
Artin–Hasse exponential
Bacterial growth
Baker–Campbell–Hausdorff formula
Cell growth
Barometric formula
Beer–Lambert law
Characterizations of t... |
https://en.wikipedia.org/wiki/Blinding%20%28cryptography%29 | In cryptography, blinding is a technique by which an agent can provide a service to (i.e., compute a function for) a client in an encoded form without knowing either the real input or the real output. Blinding techniques also have applications to preventing side-channel attacks on encryption devices.
More precisely, ... |
https://en.wikipedia.org/wiki/Backhoe%20loader | A backhoe loader, also called a loader backhoe, loader excavator, tractor excavator, digger or colloquially shortened to backhoe within the industry, is a heavy equipment vehicle that consists of a tractor-like unit fitted with a loader-style shovel/bucket on the front and a backhoe on the back. Due to its (relatively)... |
https://en.wikipedia.org/wiki/Homological%20conjectures%20in%20commutative%20algebra | In mathematics, homological conjectures have been a focus of research activity in commutative algebra since the early 1960s. They concern a number of interrelated (sometimes surprisingly so) conjectures relating various homological properties of a commutative ring to its internal ring structure, particularly its Krull ... |
https://en.wikipedia.org/wiki/Basel%20problem | The Basel problem is a problem in mathematical analysis with relevance to number theory, concerning an infinite sum of inverse squares. It was first posed by Pietro Mengoli in 1650 and solved by Leonhard Euler in 1734, and read on 5 December 1735 in The Saint Petersburg Academy of Sciences. Since the problem had withst... |
https://en.wikipedia.org/wiki/121%20%28number%29 | 121 (one hundred [and] twenty-one) is the natural number following 120 and preceding 122.
In mathematics
One hundred [and] twenty-one is
a square (11 times 11)
the sum of the powers of 3 from 0 to 4, so a repunit in ternary. Furthermore, 121 is the only square of the form , where p is prime (3, in this case).
the... |
https://en.wikipedia.org/wiki/2000%20%28number%29 | 2000 (two thousand) is a natural number following 1999 and preceding 2001.
It is:
the highest number expressible using only two unmodified characters in Roman numerals (MM)
an Achilles number
smallest four digit eban number
Selected numbers in the range 2001–2999
2001 to 2099
2001 – sphenic number
2002 – palindrom... |
https://en.wikipedia.org/wiki/VLC%20media%20player | VLC media player (previously the VideoLAN Client and commonly known as simply VLC) is a free and open-source, portable, cross-platform media player software and streaming media server developed by the VideoLAN project. VLC is available for desktop operating systems and mobile platforms, such as Android, iOS and iPadOS.... |
https://en.wikipedia.org/wiki/Contra%20%28video%20game%29 | is a run and gun video game developed and published by Konami, originally developed as a coin-operated arcade video game in 1986 and released on February 20, 1987. A home version was released for the Nintendo Entertainment System in 1988, along with ports for various home computer formats, including the MSX2. The arcad... |
https://en.wikipedia.org/wiki/Glossary%20of%20Riemannian%20and%20metric%20geometry | This is a glossary of some terms used in Riemannian geometry and metric geometry — it doesn't cover the terminology of differential topology.
The following articles may also be useful; they either contain specialised vocabulary or provide more detailed expositions of the definitions given below.
Connection
Curvatur... |
https://en.wikipedia.org/wiki/Field%20%28computer%20science%29 | In computer science, data that has several parts, known as a record, can be divided into fields (data fields). Relational databases arrange data as sets of database records, so called rows. Each record consists of several fields; the fields of all records form the columns.
Examples of fields: name, gender, hair colour.... |
https://en.wikipedia.org/wiki/Weyl%20algebra | In abstract algebra, the Weyl algebra is the ring of differential operators with polynomial coefficients (in one variable), namely expressions of the form
More precisely, let F be the underlying field, and let F[X] be the ring of polynomials in one variable, X, with coefficients in F. Then each fi lies in F[X].
∂X i... |
https://en.wikipedia.org/wiki/Variational%20principle | In science and especially in mathematical studies, a variational principle is one that enables a problem to be solved using calculus of variations, which concerns finding functions that optimize the values of quantities that depend on those functions. For example, the problem of determining the shape of a hanging chain... |
https://en.wikipedia.org/wiki/Electrowetting | Electrowetting is the modification of the wetting properties of a surface (which is typically hydrophobic) with an applied electric field.
History
The electrowetting of mercury and other liquids on variably charged surfaces was probably first explained by Gabriel Lippmann in 1875 and was certainly observed much earlie... |
https://en.wikipedia.org/wiki/Unit%20fraction | A unit fraction is a positive fraction with one as its numerator, 1/. It is the multiplicative inverse (reciprocal) of the denominator of the fraction, which must be a positive natural number. Examples are 1/1, 1/2, 1/3, 1/4, 1/5, etc. When an object is divided into equal parts, each part is a unit fraction of the whol... |
https://en.wikipedia.org/wiki/UltraSPARC | The UltraSPARC is a microprocessor developed by Sun Microsystems and fabricated by Texas Instruments, introduced in mid-1995. It is the first microprocessor from Sun to implement the 64-bit SPARC V9 instruction set architecture (ISA). Marc Tremblay was a co-microarchitect.
Microarchitecture
The UltraSPARC is a four-... |
https://en.wikipedia.org/wiki/Heavy%20equipment | Heavy equipment, heavy machinery, earthmovers, construction vehicles, or construction equipment, refers to heavy-duty vehicles specially designed to execute construction tasks, most frequently involving earthwork operations or other large construction tasks. Heavy equipment usually comprises five equipment systems: the... |
https://en.wikipedia.org/wiki/Awareness | In philosophy and psychology, awareness is a concept about knowing, perceiving and being cognizant of events. Another definition describes it as a state wherein a subject is aware of some information when that information is directly available to bring to bear in the direction of a wide range of behavioral actions. The... |
https://en.wikipedia.org/wiki/Lewy%20body | Lewy bodies are the inclusion bodies – abnormal aggregations of protein – that develop inside nerve cells affected by Parkinson's disease (PD), the Lewy body dementias (Parkinson's disease dementia and dementia with Lewy bodies (DLB)), and some other disorders. They are also seen in cases of multiple system atrophy, pa... |
https://en.wikipedia.org/wiki/Thue%E2%80%93Morse%20sequence | In mathematics, the Thue–Morse sequence or Prouhet–Thue–Morse sequence or parity sequence is the binary sequence (an infinite sequence of 0s and 1s) obtained by starting with 0 and successively appending the Boolean complement of the sequence obtained thus far. The first few steps of this procedure yield the strings 0 ... |
https://en.wikipedia.org/wiki/Respiration%20%28physiology%29 | In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the removal of carbon dioxide in the opposite direction that's to the environment.
The physiological definition of respiration differs from the biochemical definition, which refers to a metabolic process ... |
https://en.wikipedia.org/wiki/Cat%27s%20cradle | Cat's cradle is a game involving the creation of various string figures between the fingers, either individually or by passing a loop of string back and forth between two or more players. The true origin of the name is debated, though the first known reference is in The light of nature pursued by Abraham Tucker in 1768... |
https://en.wikipedia.org/wiki/Video4Linux | Video4Linux (V4L for short) is a collection of device drivers and an API for supporting realtime video capture on Linux systems. It supports many USB webcams, TV tuners, and related devices, standardizing their output, so programmers can easily add video support to their applications.
Video4Linux is responsible for cr... |
https://en.wikipedia.org/wiki/Monochord | A monochord, also known as sonometer (see below), is an ancient musical and scientific laboratory instrument, involving one (mono-) string (chord). The term monochord is sometimes used as the class-name for any musical stringed instrument having only one string and a stick shaped body, also known as musical bows. Accor... |
https://en.wikipedia.org/wiki/Smith%20chart | The Smith chart (sometimes also called Smith diagram, Mizuhashi chart (), Mizuhashi–Smith chart (), Volpert–Smith chart () or Mizuhashi–Volpert–Smith chart), is a graphical calculator or nomogram designed for electrical and electronics engineers specializing in radio frequency (RF) engineering to assist in solving prob... |
https://en.wikipedia.org/wiki/Compass%20%28drawing%20tool%29 | A compass, more accurately known as a pair of compasses, is a technical drawing instrument that can be used for inscribing circles or arcs. As dividers, it can also be used as a tool to mark out distances, in particular, on maps. Compasses can be used for mathematics, drafting, navigation and other purposes.
Prior to ... |
https://en.wikipedia.org/wiki/Passive%20matrix%20addressing | Passive matrix addressing is an addressing scheme used in early LCDs. This is a matrix addressing scheme meaning that only m + n control signals are required to address an m × n display. A pixel in a passive matrix must maintain its state without active driving circuitry until it can be refreshed again.
The signal is... |
https://en.wikipedia.org/wiki/Inclusion%20map | In mathematics, if is a subset of then the inclusion map (also inclusion function, insertion, or canonical injection) is the function that sends each element of to treated as an element of
A "hooked arrow" () is sometimes used in place of the function arrow above to denote an inclusion map; thus:
(However, som... |
https://en.wikipedia.org/wiki/Bimodule | In abstract algebra, a bimodule is an abelian group that is both a left and a right module, such that the left and right multiplications are compatible. Besides appearing naturally in many parts of mathematics, bimodules play a clarifying role, in the sense that many of the relationships between left and right modules ... |
https://en.wikipedia.org/wiki/Flat%20module | In algebra, flat modules include free modules, projective modules, and, over a principal ideal domain, torsion free modules. Formally, a module M over a ring R is flat if taking the tensor product over R with M preserves exact sequences. A module is faithfully flat if taking the tensor product with a sequence produces... |
https://en.wikipedia.org/wiki/Index%20of%20logarithm%20articles | This is a list of logarithm topics, by Wikipedia page. See also the list of exponential topics.
Acoustic power
Antilogarithm
Apparent magnitude
Baker's theorem
Bel
Benford's law
Binary logarithm
Bode plot
Henry Briggs
Bygrave slide rule
Cologarithm
Common logarithm
Complex logarithm
Discrete logarithm
Di... |
https://en.wikipedia.org/wiki/10%2C000 | 10,000 (ten thousand) is the natural number following 9,999 and preceding 10,001.
Name
Many languages have a specific word for this number: in Ancient Greek it is (the etymological root of the word myriad in English), in Aramaic , in Hebrew [], in Chinese (Mandarin , Cantonese , Hokkien bān), in Japanese [], in K... |
https://en.wikipedia.org/wiki/Order%20%28group%20theory%29 | In mathematics, the order of a finite group is the number of its elements. If a group is not finite, one says that its order is infinite. The order of an element of a group (also called period length or period) is the order of the subgroup generated by the element. If the group operation is denoted as a multiplication,... |
https://en.wikipedia.org/wiki/ISO/IEC%202022 | ISO/IEC 2022 Information technology—Character code structure and extension techniques, is an ISO/IEC standard in the field of character encoding. It is equivalent to the ECMA standard ECMA-35, the ANSI standard ANSI X3.41 and the Japanese Industrial Standard JIS X 0202. Originating in 1971, it was most recently revised... |
https://en.wikipedia.org/wiki/Cranial%20electrotherapy%20stimulation | Cranial electrotherapy stimulation (CES) is a form of neurostimulation that delivers a small, pulsed, alternating current via electrodes on the head. CES is used with the intention of treating a variety of conditions such as anxiety, depression and insomnia. CES has been suggested as a possible treatment for headaches,... |
https://en.wikipedia.org/wiki/DEC%20PRISM | PRISM (Parallel Reduced Instruction Set Machine) was a 32-bit RISC instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC). It was the outcome of a number of DEC research projects from the 1982–1985 time-frame, and the project was subject to continually changing requirements and planned uses... |
https://en.wikipedia.org/wiki/Alternating%20series | In mathematics, an alternating series is an infinite series of the form
or
with for all . The signs of the general terms alternate between positive and negative. Like any series, an alternating series converges if and only if the associated sequence of partial sums converges.
Examples
The geometric series 1/2 − 1/4... |
https://en.wikipedia.org/wiki/SSE3 | SSE3, Streaming SIMD Extensions 3, also known by its Intel code name Prescott New Instructions (PNI), is the third iteration of the SSE instruction set for the IA-32 (x86) architecture. Intel introduced SSE3 in early 2004 with the Prescott revision of their Pentium 4 CPU. In April 2005, AMD introduced a subset of SSE3 ... |
https://en.wikipedia.org/wiki/Free%20algebra | In mathematics, especially in the area of abstract algebra known as ring theory, a free algebra is the noncommutative analogue of a polynomial ring since its elements may be described as "polynomials" with non-commuting variables. Likewise, the polynomial ring may be regarded as a free commutative algebra.
Definition
... |
https://en.wikipedia.org/wiki/Pullback%20%28differential%20geometry%29 | Let be a smooth map between smooth manifolds and . Then there is an associated linear map from the space of 1-forms on (the linear space of sections of the cotangent bundle) to the space of 1-forms on . This linear map is known as the pullback (by ), and is frequently denoted by . More generally, any covariant tenso... |
https://en.wikipedia.org/wiki/Electrodynamic%20suspension | Electrodynamic suspension (EDS) is a form of magnetic levitation in which there are conductors which are exposed to time-varying magnetic fields. This induces eddy currents in the conductors that creates a repulsive magnetic field which holds the two objects apart.
These time varying magnetic fields can be caused by r... |
https://en.wikipedia.org/wiki/Limiter | In electronics, a limiter is a circuit that allows signals below a specified input power or level to pass unaffected while attenuating (lowering) the peaks of stronger signals that exceed this threshold. Limiting is a type of dynamic range compression. Clipping is an extreme version of limiting.
Limiting is any proces... |
https://en.wikipedia.org/wiki/Powder%20metallurgy | Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal powders. PM processes can reduce or eliminate the need for subtractive processes in manufacturing, lowering material losses and reducing the cost of the final product.
Powder metallurgy is also used to m... |
https://en.wikipedia.org/wiki/Sound%20pressure | Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave. In air, sound pressure can be measured using a microphone, and in water with a hydrophone. The SI unit of sound pressure is the pascal (Pa).
Mathematical definitio... |
https://en.wikipedia.org/wiki/Dialysis%20%28chemistry%29 | In chemistry, dialysis is the process of separating molecules in solution by the difference in their rates of diffusion through a semipermeable membrane, such as dialysis tubing.
Dialysis is a common laboratory technique that operates on the same principle as medical dialysis. In the context of life science research, ... |
https://en.wikipedia.org/wiki/Spheroplast | A spheroplast (or sphaeroplast in British usage) is a microbial cell from which the cell wall has been almost completely removed, as by the action of penicillin or lysozyme. According to some definitions, the term is used to describe Gram-negative bacteria. According to other definitions, the term also encompasses yeas... |
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