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https://en.wikipedia.org/wiki/Forward%20declaration | In computer programming, a forward declaration is a declaration of an identifier (denoting an entity such as a type, a variable, a constant, or a function) for which the programmer has not yet given a complete definition.
It is required for a compiler to know certain properties of an identifier (size for memory alloca... |
https://en.wikipedia.org/wiki/Tinning | Tinning is the process of thinly coating sheets of wrought iron or steel with tin, and the resulting product is known as tinplate. The term is also widely used for the different process of coating a metal with solder before soldering.
It is most often used to prevent rust, but is also commonly applied to the ends of s... |
https://en.wikipedia.org/wiki/Marsden%20square | Marsden square mapping or Marsden squares is a system that divides a world map with latitude-longitude gridlines (e.g. plate carrée projection, Mercator or other) between 80°N and 70°S latitudes (or 90°N and 80°S: refer chart at Ocean Teacher’s Ocean Geography page) into grid cells of 10° latitude by 10° longitude, eac... |
https://en.wikipedia.org/wiki/Fluent%20calculus | The fluent calculus is a formalism for expressing dynamical domains in first-order logic. It is a variant of the situation calculus; the main difference is that situations are considered representations of states. A binary function symbol is used to concatenate the terms that represent facts that hold in a situation. ... |
https://en.wikipedia.org/wiki/Spatial%20reference%20system | A spatial reference system (SRS) or coordinate reference system (CRS) is a framework used to precisely measure locations on the surface of Earth as coordinates. It is thus the application of the abstract mathematics of coordinate systems and analytic geometry to geographic space. A particular SRS specification (for exa... |
https://en.wikipedia.org/wiki/Security%20operations%20center | A security operations center (SOC) is responsible for protecting an organization against cyber threats. SOC analysts perform round-the-clock monitoring of an organization’s network and investigate any potential security incidents. If a cyberattack is detected, the SOC analysts are responsible for taking any steps neces... |
https://en.wikipedia.org/wiki/Creepmeter | A creepmeter is an instrument that monitors the slow surface displacement of an active geologic fault in the earth. Its function is to record the slow, aseismic creep between earthquakes. The measurement range of a creepmeter is usually limited to 10–30 mm. Approximately 40 creepmeters are in operation in California—mo... |
https://en.wikipedia.org/wiki/Barracuda%20Networks | Barracuda Networks, Inc. is a company providing security, networking and storage products based on network appliances and cloud services. The company's security products include products for protection against email, web surfing, web hackers and instant messaging threats such as spam, spyware, trojans, and viruses. The... |
https://en.wikipedia.org/wiki/Captive%20breeding | Captive breeding, also known as captive propagation, is the process of keeping plants or animals in controlled environments, such as wildlife reserves, zoos, botanic gardens, and other conservation facilities. It is sometimes employed to help species that are being threatened by the effects of human activities such as ... |
https://en.wikipedia.org/wiki/Time%20reversal%20signal%20processing | Time reversal signal processing is a signal processing technique that has three main uses: creating an optimal carrier signal for communication, reconstructing a source event, and focusing high-energy waves to a point in space. A Time Reversal Mirror (TRM) is a device that can focus waves using the time reversal metho... |
https://en.wikipedia.org/wiki/EFront | eFront was an affiliate marketing network which purchased successful websites, such as Penny Arcade, SquareGamer, and BetaNews, and pooled traffic to those sites to command higher prices for advertising during an industrywide ad revenue slowdown. In 2001, there was a scandal when ICQ instant messaging logs between the ... |
https://en.wikipedia.org/wiki/Markov%20number | A Markov number or Markoff number is a positive integer x, y or z that is part of a solution to the Markov Diophantine equation
studied by .
The first few Markov numbers are
1, 2, 5, 13, 29, 34, 89, 169, 194, 233, 433, 610, 985, 1325, ...
appearing as coordinates of the Markov triples
(1, 1, 1), (1, 1, 2), (1, 2,... |
https://en.wikipedia.org/wiki/Teardrop%20tattoo | The teardrop tattoo or tear tattoo is a symbolic tattoo of a tear that is placed underneath the eye. The teardrop is one of the most widely recognised prison tattoos and has various meanings.
It can signify that the wearer has spent time in prison, or more specifically that the wearer was raped while incarcerated and ... |
https://en.wikipedia.org/wiki/Behavior-driven%20development | In software engineering, behavior-driven development (BDD) is a software development process that goes well with agile software development process that encourages collaboration among developers, quality assurance experts, and customer representatives in a software project. It encourages teams to use conversation and c... |
https://en.wikipedia.org/wiki/CDC%203000%20series | The CDC 3000 series ("thirty-six hundred" or "thirty-one hundred") are a family of mainframe computers from Control Data Corporation (CDC). The first member, the CDC 3600, was a 48-bit system introduced in 1963. The same basic design led to the cut-down CDC 3400 of 1964, and then the 24-bit CDC 3300, 3200 and 3100 intr... |
https://en.wikipedia.org/wiki/241%20%28number%29 | 241 (two hundred [and] forty-one) is the natural number between 240 and 242. It is also a prime number.
241 is the larger of the twin primes (239, 241). Twin primes are pairs of primes separated by 2.
241 is a regular prime and a lucky prime.
Since 241 = 15 × 24 + 1, it is a Proth prime.
241 is a repdigit in bas... |
https://en.wikipedia.org/wiki/Outer%20billiards | Outer billiards is a dynamical system based on a convex shape in the plane. Classically, this system is defined for the Euclidean plane but one can also consider the system in the hyperbolic plane or in other spaces that suitably generalize the plane. Outer billiards differs from a usual dynamical billiard in that it d... |
https://en.wikipedia.org/wiki/Engel%20expansion | The Engel expansion of a positive real number x is the unique non-decreasing sequence of positive integers such that
For instance, Euler's number e has the Engel expansion
1, 1, 2, 3, 4, 5, 6, 7, 8, ...
corresponding to the infinite series
Rational numbers have a finite Engel expansion, while irrational numbers have... |
https://en.wikipedia.org/wiki/Single%20address%20space%20operating%20system | In computer science, a single address space operating system (or SASOS) is an operating system that provides only one globally shared address space for all processes. In a single address space operating system, numerically identical (virtual memory) logical addresses in different processes all refer to exactly the same... |
https://en.wikipedia.org/wiki/FFTW | The Fastest Fourier Transform in the West (FFTW) is a software library for computing discrete Fourier transforms (DFTs) developed by Matteo Frigo and Steven G. Johnson at the Massachusetts Institute of Technology.
FFTW is one of the fastest free software implementations of the fast Fourier transform (FFT). It implemen... |
https://en.wikipedia.org/wiki/Johnjoe%20McFadden | Johnjoe McFadden (born 17 May 1956) is an Anglo-Irish scientist, academic and writer. He is Professor of Molecular Genetics at the University of Surrey, United Kingdom.
Life
McFadden was born in Donegal, Ireland but raised in the UK. He holds joint British and Irish Nationality. He obtained his BSc in Biochemistry Uni... |
https://en.wikipedia.org/wiki/Radiant%20flux | In radiometry, radiant flux or radiant power is the radiant energy emitted, reflected, transmitted, or received per unit time, and spectral flux or spectral power is the radiant flux per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The SI unit of ... |
https://en.wikipedia.org/wiki/Van%20Deemter%20equation | The van Deemter equation in chromatography, named for Jan van Deemter, relates the variance per unit length of a separation column to the linear mobile phase velocity by considering physical, kinetic, and thermodynamic properties of a separation. These properties include pathways within the column, diffusion (axial and... |
https://en.wikipedia.org/wiki/Trudinger%27s%20theorem | In mathematical analysis, Trudinger's theorem or the Trudinger inequality (also sometimes called the Moser–Trudinger inequality) is a result of functional analysis on Sobolev spaces. It is named after Neil Trudinger (and Jürgen Moser).
It provides an inequality between a certain Sobolev space norm and an Orlicz space ... |
https://en.wikipedia.org/wiki/Wabun%20code | is a form of Morse code used to send Japanese language in kana characters. Unlike International Morse Code, which represents letters of the Latin script, in Wabun each symbol represents a Japanese kana. For this reason, Wabun code is also sometimes called Kana code.
When Wabun code is intermixed with International Mor... |
https://en.wikipedia.org/wiki/Tunnel%20injection | Tunnel injection is a field electron emission effect; specifically a quantum process called Fowler–Nordheim tunneling, whereby charge carriers are injected to an electric conductor through a thin layer of an electric insulator.
It is used to program NAND flash memory. The process used for erasing is called tunnel rel... |
https://en.wikipedia.org/wiki/Penetron | The penetron, short for penetration tube, is a type of limited-color television used in some military applications. Unlike a conventional color television, the penetron produces a limited color gamut, typically two colors and their combination. Penetrons, and other military-only cathode ray tubes (CRTs), have been repl... |
https://en.wikipedia.org/wiki/Penrose%20graphical%20notation | In mathematics and physics, Penrose graphical notation or tensor diagram notation is a (usually handwritten) visual depiction of multilinear functions or tensors proposed by Roger Penrose in 1971. A diagram in the notation consists of several shapes linked together by lines.
The notation widely appears in modern quan... |
https://en.wikipedia.org/wiki/Idempotent%20matrix | In linear algebra, an idempotent matrix is a matrix which, when multiplied by itself, yields itself. That is, the matrix is idempotent if and only if . For this product to be defined, must necessarily be a square matrix. Viewed this way, idempotent matrices are idempotent elements of matrix rings.
Example
Examples ... |
https://en.wikipedia.org/wiki/Belling-Lee%20connector | The Belling-Lee connector (also type 9,52, but largely only in the context of its specification, IEC 61169, Part 2: Radio-frequency coaxial connector of type 9,52) is commonly used in Europe, parts of South-East Asia, and Australia, to connect coaxial cables with each other and with terrestrial VHF/UHF roof antennas, a... |
https://en.wikipedia.org/wiki/Dependence%20relation | In mathematics, a dependence relation is a binary relation which generalizes the relation of linear dependence.
Let be a set. A (binary) relation between an element of and a subset of is called a dependence relation, written , if it satisfies the following properties:
if , then ;
if , then there is a finite s... |
https://en.wikipedia.org/wiki/Kolmogorov%27s%20inequality | In probability theory, Kolmogorov's inequality is a so-called "maximal inequality" that gives a bound on the probability that the partial sums of a finite collection of independent random variables exceed some specified bound.
Statement of the inequality
Let X1, ..., Xn : Ω → R be independent random variables defined ... |
https://en.wikipedia.org/wiki/Przemys%C5%82aw%20Prusinkiewicz | Przemysław (Przemek) Prusinkiewicz is a Polish computer scientist who advanced the idea that Fibonacci numbers in nature can be in part understood as the expression of certain algebraic constraints on free groups, specifically as certain Lindenmayer grammars. Prusinkiewicz's main work is on the modeling of plant growt... |
https://en.wikipedia.org/wiki/Equivariant%20cohomology | In mathematics, equivariant cohomology (or Borel cohomology) is a cohomology theory from algebraic topology which applies to topological spaces with a group action. It can be viewed as a common generalization of group cohomology and an ordinary cohomology theory. Specifically, the equivariant cohomology ring of a spac... |
https://en.wikipedia.org/wiki/Hartogs%20number | In mathematics, specifically in axiomatic set theory, a Hartogs number is an ordinal number associated with a set. In particular, if X is any set, then the Hartogs number of X is the least ordinal α such that there is no injection from α into X. If X can be well-ordered then the cardinal number of α is a minimal cardi... |
https://en.wikipedia.org/wiki/Conjugation%20of%20isometries%20in%20Euclidean%20space | In a group, the conjugate by g of h is ghg−1.
Translation
If h is a translation, then its conjugation by an isometry can be described as applying the isometry to the translation:
the conjugation of a translation by a translation is the first translation
the conjugation of a translation by a rotation is a translation b... |
https://en.wikipedia.org/wiki/N-skeleton | In mathematics, particularly in algebraic topology, the of a topological space presented as a simplicial complex (resp. CW complex) refers to the subspace that is the union of the simplices of (resp. cells of ) of dimensions In other words, given an inductive definition of a complex, the is obtained by stopping a... |
https://en.wikipedia.org/wiki/Cytochemistry | Cytochemistry is the branch of cell biology dealing with the detection of cell constituents by means of biochemical analysis and visualization techniques. This is the study of the localization of cellular components through the use of staining methods. The term is also used to describe a process of identification of th... |
https://en.wikipedia.org/wiki/ISO%207001 | ISO 7001 ("public information symbols") is a standard published by the International Organization for Standardization that defines a set of pictograms and symbols for public information. The latest version, ISO 7001:2023, was published in February 2023.
The set is the result of extensive testing in several countries ... |
https://en.wikipedia.org/wiki/Cathodic%20arc%20deposition | Cathodic arc deposition or Arc-PVD is a physical vapor deposition technique in which an electric arc is used to vaporize material from a cathode target. The vaporized material then condenses on a substrate, forming a thin film. The technique can be used to deposit metallic, ceramic, and composite films.
History
Indus... |
https://en.wikipedia.org/wiki/Terayon | Terayon Communication Systems, Inc. was a company that vended equipment to broadband service providers for delivering broadband voice, video and data services to residential and business subscribers.
History
Terayon was founded by Israeli brothers Zaki Rakib and Shlomo Rakib in 1993; both brothers graduated from high ... |
https://en.wikipedia.org/wiki/MuseWeb | MuseWeb (formerly Museums and the Web) is an annual international conference in the field of museums and their websites. It was founded and organized by Archives & Museum Informatics and has taken place each spring since 1997 in North America, along with events in other countries.
Since 2011 it has been organized by M... |
https://en.wikipedia.org/wiki/Orange%20oil | Orange oil is an essential oil produced by cells within the rind of an orange fruit (Citrus sinensis fruit). In contrast to most essential oils, it is extracted as a by-product of orange juice production by centrifugation, producing a cold-pressed oil. It is composed of mostly (greater than 90%) d-limonene, and is ofte... |
https://en.wikipedia.org/wiki/Delta%20neutral | In finance, delta neutral describes a portfolio of related financial securities, in which the portfolio value remains unchanged when small changes occur in the value of the underlying security. Such a portfolio typically contains options and their corresponding underlying securities such that positive and negative delt... |
https://en.wikipedia.org/wiki/Gyricon | Gyricon is a type of electronic paper developed at the Xerox PARC (Palo Alto Research Center). It has many of the same properties as paper: it is flexible, contains an image, and is viewable from a wide angle, but it can be erased and written thousands of times.
A Gyricon sheet is a thin layer of transparent plastic, ... |
https://en.wikipedia.org/wiki/Minkowski%E2%80%93Hlawka%20theorem | In mathematics, the Minkowski–Hlawka theorem is a result on the lattice packing of hyperspheres in dimension n > 1. It states that there is a lattice in Euclidean space of dimension n, such that the corresponding best packing of hyperspheres with centres at the lattice points has density Δ satisfying
with ζ the Rieman... |
https://en.wikipedia.org/wiki/Cryptographic%20key%20types | A cryptographic key is a string of data that is used to lock or unlock cryptographic functions, including authentication, authorization and encryption. Cryptographic keys are grouped into cryptographic key types according to the functions they perform.
Description
Consider a keyring that contains a variety of keys. T... |
https://en.wikipedia.org/wiki/South%20African%20Computer%20Olympiad | The South African Computing Olympiad (SACO) is an annual computer programming competition for secondary school students (although at least one primary school student has participated) in South Africa. The South African team for the International Olympiad in Informatics is selected through it.
Competition rounds
The co... |
https://en.wikipedia.org/wiki/Focused%20ion%20beam | Focused ion beam, also known as FIB, is a technique used particularly in the semiconductor industry, materials science and increasingly in the biological field for site-specific analysis, deposition, and ablation of materials. A FIB setup is a scientific instrument that resembles a scanning electron microscope (SEM). H... |
https://en.wikipedia.org/wiki/Petriscript | PetriScript is a modeling language for Petri nets, designed by Alexandre Hamez and Xavier Renault. The CPN-AMI platform provides many tools to work on Petri nets, such as verifying and model-checking tools.
Originally, simple Petri nets were created through graphic design, but research conducted internally at LIP6 rev... |
https://en.wikipedia.org/wiki/ITU-R%20468%20noise%20weighting | ITU-R 468 (originally defined in CCIR recommendation 468-4, therefore formerly also known as CCIR weighting; sometimes referred to as CCIR-1k) is a standard relating to noise measurement, widely used when measuring noise in audio systems. The standard, now referred to as ITU-R BS.468-4, defines a weighting filter curv... |
https://en.wikipedia.org/wiki/Shoring | Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Shoring comes from shore, a timber or metal prop. Shoring may be vertical, angled, or horizontal.
Methods
Buildings
Raking shores
In this method,... |
https://en.wikipedia.org/wiki/Collision%20resistance | In cryptography, collision resistance is a property of cryptographic hash functions: a hash function H is collision-resistant if it is hard to find two inputs that hash to the same output; that is, two inputs a and b where a ≠ b but H(a) = H(b). The pigeonhole principle means that any hash function with more inputs tha... |
https://en.wikipedia.org/wiki/Bred%20vector | In applied mathematics, bred vectors are perturbations related to Lyapunov vectors, that capture fast-growing dynamical instabilities of the solution of a numerical model. They are used, for example, as initial perturbations for ensemble forecasting in numerical weather prediction. They were introduced by Zoltan Toth a... |
https://en.wikipedia.org/wiki/Builders%27%20rites | Builders' rites are ceremonies attendant on the laying of foundation stones, including ecclesiastical, masonic or other traditions connected with foundations or other aspects of construction.
One such custom is that of placing a few coins, newspapers, etc. within a cavity beneath the stone. Should the stone later be r... |
https://en.wikipedia.org/wiki/Fixed-satellite%20service | Fixed-satellite service (short: FSS | also: fixed-satellite radiocommunication service) is – according to article 1.21 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as A radiocommunication service between earth stations at given positions, when one or more satellites are used; th... |
https://en.wikipedia.org/wiki/DFI | DFI (Diamond Flower Inc) is a Taiwanese industrial computer company with headquarters in Taipei. It designs, develops, manufactures, and sells industrial motherboard, industrial PCs, System-on-Module, industrial displays, and ODM/OEM services.
DFI was founded by Y.C Lu on July 14, 1981, developing and selling electron... |
https://en.wikipedia.org/wiki/251%20%28number%29 | 251 (two hundred [and] fifty-one) is the natural number between 250 and 252. It is also a prime number.
In mathematics
251 is:
a Sophie Germain prime.
the sum of three consecutive primes (79 + 83 + 89) and seven consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47).
a Chen prime.
an Eisenstein prime with no imaginary ... |
https://en.wikipedia.org/wiki/257%20%28number%29 | 257 (two hundred [and] fifty-seven) is the natural number following 256 and preceding 258.
257 is a prime number of the form specifically with n = 3, and therefore a Fermat prime. Thus a regular polygon with 257 sides is constructible with compass and unmarked straightedge. It is currently the second largest known F... |
https://en.wikipedia.org/wiki/SageTV | SageTV Media Center, now open source, was a proprietary, commercial DVR (Digital Video Recording) and HTPC (Home theater PC) software for Mac OS X, Windows and Linux. It requires that the host computer have a hardware-based TV tuner card. The SageTV software has an integrated Electronic Programming Guide (EPG) that is ... |
https://en.wikipedia.org/wiki/1-Click | 1-Click, also called one-click or one-click buying, is the technique of allowing customers to make purchases with the payment information needed to complete the purchase having been entered by the user previously. More particularly, it allows an online shopper using an Internet marketplace to purchase an item without h... |
https://en.wikipedia.org/wiki/Square-free%20element | In mathematics, a square-free element is an element r of a unique factorization domain R that is not divisible by a non-trivial square. This means that every s such that is a unit of R.
Alternate characterizations
Square-free elements may be also characterized using their prime decomposition. The unique factorization... |
https://en.wikipedia.org/wiki/Signed%20measure | In mathematics, signed measure is a generalization of the concept of (positive) measure by allowing the set function to take negative values, i.e., to acquire sign.
Definition
There are two slightly different concepts of a signed measure, depending on whether or not one allows it to take infinite values. Signed meas... |
https://en.wikipedia.org/wiki/Hahn%20decomposition%20theorem | In mathematics, the Hahn decomposition theorem, named after the Austrian mathematician Hans Hahn, states that for any measurable space and any signed measure defined on the -algebra , there exist two -measurable sets, and , of such that:
and .
For every such that , one has , i.e., is a positive set for .
Fo... |
https://en.wikipedia.org/wiki/Keyfile | A keyfile (or key-file) is a file on a computer which contains encryption or license keys.
A common use is web server software running secure socket layer (SSL) protocols. Server-specific keys issued by trusted authorities are merged into the keyfile along with the trusted root certificates. By this method keys ca... |
https://en.wikipedia.org/wiki/Alfred%20Young%20%28mathematician%29 | Alfred Young, FRS (16 April 1873 – 15 December 1940) was a British mathematician.
He was born in Widnes, Lancashire, England, and educated at Monkton Combe School in Somerset and Clare College, Cambridge, graduating BA as 10th Wrangler in 1895. He is known for his work in the area of group theory. Both Young diagrams... |
https://en.wikipedia.org/wiki/Soft%20goal | In connection with modeling languages and especially with goal-oriented modeling, a soft goal is an objective without clear-cut criteria. Soft goals can represent:
Non-functional requirements
Relations between non-functional requirements
Non-functional requirements (or quality attributes, qualities, or more colloquia... |
https://en.wikipedia.org/wiki/Product%20measure | In mathematics, given two measurable spaces and measures on them, one can obtain a product measurable space and a product measure on that space. Conceptually, this is similar to defining the Cartesian product of sets and the product topology of two topological spaces, except that there can be many natural choices for t... |
https://en.wikipedia.org/wiki/Non-functional%20requirements%20framework | NFR (Non-Functional Requirements) need a framework for compaction. The analysis begins with softgoals that represent NFR which stakeholders agree upon. Softgoals are goals that are hard to express, but tend to be global qualities of a software system. These could be usability, performance, security and flexibility in a... |
https://en.wikipedia.org/wiki/Goal-oriented%20Requirements%20Language | Goal-oriented Requirements Language (GRL), an i*-based modeling language used in systems development, is designed to support goal-oriented modeling and reasoning about requirements especially the non-functional requirements
GRL topics
Concepts
Goal-oriented Requirements Language (GRL) allows to express conflict betwe... |
https://en.wikipedia.org/wiki/Direct-conversion%20receiver | A direct-conversion receiver (DCR), also known as homodyne, synchrodyne, or zero-IF receiver, is a radio receiver design that demodulates the incoming radio signal using synchronous detection driven by a local oscillator whose frequency is identical to, or very close to the carrier frequency of the intended signal. Th... |
https://en.wikipedia.org/wiki/TRIX%20%28operating%20system%29 | TRIX is a network-oriented research operating system developed in the late 1970s at MIT's Laboratory for Computer Science (LCS) by Professor Steve Ward and his research group. It ran on the NuMachine and had remote procedure call functionality built into its kernel, but was otherwise a Version 7 Unix workalike.
Design... |
https://en.wikipedia.org/wiki/Floquet%20theory | Floquet theory is a branch of the theory of ordinary differential equations relating to the class of solutions to periodic linear differential equations of the form
with a piecewise continuous periodic function with period and defines the state of the stability of solutions.
The main theorem of Floquet theory, Floq... |
https://en.wikipedia.org/wiki/Global%20Biodiversity%20Information%20Facility | The Global Biodiversity Information Facility (GBIF) is an international organisation that focuses on making scientific data on biodiversity available via the Internet using web services. The data are provided by many institutions from around the world; GBIF's information architecture makes these data accessible and sea... |
https://en.wikipedia.org/wiki/Duffing%20equation | The Duffing equation (or Duffing oscillator), named after Georg Duffing (1861–1944), is a non-linear second-order differential equation used to model certain damped and driven oscillators. The equation is given by
where the (unknown) function is the displacement at time , is the first derivative of with respect to ... |
https://en.wikipedia.org/wiki/List%20of%20Apple%20II%20application%20software | Following is a List of Apple II applications including utilities and development tools.
0–9
3D Art Graphics - 3D computer graphics software, a set of 3D computer graphics effects, written by Kazumasa Mitazawa and released in June 1978
A
A2Command - Norton Commander style file manager
ADTPro - telecom
Apple Writer - w... |
https://en.wikipedia.org/wiki/Philopatry | Philopatry is the tendency of an organism to stay in or habitually return to a particular area. The causes of philopatry are numerous, but natal philopatry, where animals return to their birthplace to breed, may be the most common. The term derives from the Greek roots philo, "liking, loving" and patra, "fatherland", a... |
https://en.wikipedia.org/wiki/Bus%20analyzer | A bus analyzer is a type of a protocol analysis tool, used for capturing and analyzing communication data across a specific interface bus, usually embedded in a hardware system. The bus analyzer functionality helps design, test and validation engineers to check, test, debug and validate their designs throughout the des... |
https://en.wikipedia.org/wiki/Northbound%20interface | In computer networking and computer architecture, a northbound interface of a component is an interface that allows the component to communicate with a higher level component, using the latter component's southbound interface. The northbound interface conceptualizes the lower level details (e.g., data or functions) use... |
https://en.wikipedia.org/wiki/Butyl%20acetate | n-Butyl acetate is an organic compound with the formula . A colorless, flammable liquid, it is the ester derived from n-butanol and acetic acid. It is found in many types of fruit, where it imparts characteristic flavors and has a sweet smell of banana or apple. It is used as an industrial solvent.
The other three iso... |
https://en.wikipedia.org/wiki/DBc | dBc (decibels relative to the carrier) is the power ratio of a signal to a carrier signal, expressed in decibels. For example, phase noise is expressed in dBc/Hz at a given frequency offset from the carrier. dBc can also be used as a measurement of Spurious-Free Dynamic Range (SFDR) between the desired signal and unwan... |
https://en.wikipedia.org/wiki/Key%20whitening | In cryptography, key whitening is a technique intended to increase the security of an iterated block cipher. It consists of steps that combine the data with portions of the key.
Details
The most common form of key whitening is xor-encrypt-xor -- using a simple XOR before the first round and after the last round of en... |
https://en.wikipedia.org/wiki/Nested%20Context%20Language | In the field of digital and interactive television, Nested Context Language (NCL) is a declarative authoring language for hypermedia documents. NCL documents do not contain multimedia elements such as audio or video content; rather they function as a "glue" language that specifies how multimedia components are related.... |
https://en.wikipedia.org/wiki/Modeling%20perspective | A modeling perspective in information systems is a particular way to represent pre-selected aspects of a system. Any perspective has a different focus, conceptualization, dedication and visualization of what the model is representing.
The traditional way to distinguish between modeling perspectives is structural, fun... |
https://en.wikipedia.org/wiki/Hodgkin%E2%80%93Huxley%20model | The Hodgkin–Huxley model, or conductance-based model, is a mathematical model that describes how action potentials in neurons are initiated and propagated. It is a set of nonlinear differential equations that approximates the electrical engineering characteristics of excitable cells such as neurons and muscle cells. It... |
https://en.wikipedia.org/wiki/Parenthesome | Within the cells of some members of basidiomycetes fungi are found microscopic structures called parenthesomes or septal pore caps. They are shaped like parentheses and found on either side of pores in the dolipore septum which separates cells within a hypha. Their function has not been established, and their composi... |
https://en.wikipedia.org/wiki/Synapsis | Synapsis is the pairing of two chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis. When homologous chromosomes synapse, their ends are first attached to the nucle... |
https://en.wikipedia.org/wiki/Neutrodyne | The Neutrodyne radio receiver, invented in 1922 by Louis Hazeltine, was a particular type of tuned radio frequency (TRF) receiver, in which the instability-causing inter-electrode capacitance of the triode RF tubes is cancelled out or "neutralized" to prevent parasitic oscillations which caused "squealing" or "howling"... |
https://en.wikipedia.org/wiki/Area%20compatibility%20factor | In survival analysis, the area compatibility factor, F, is used in indirect standardisation of population mortality rates.
where:
is the standardised central exposed-to risk from age x to x + t for the standard population,
is the central exposed-to risk from age x to x + t for the population under study and
is t... |
https://en.wikipedia.org/wiki/263%20%28number%29 | 263 is the natural number between 262 and 264. It is also a prime number.
In mathematics
263 is
a balanced prime,
an irregular prime,
a Ramanujan prime, a Chen prime, and
a safe prime.
It is also a strictly non-palindromic number and a happy number.
References
Integers |
https://en.wikipedia.org/wiki/269%20%28number%29 | 269 (two hundred [and] sixty-nine) is the natural number between 268 and 270. It is also a prime number.
In mathematics
269 is a twin prime,
and a Ramanujan prime.
It is the largest prime factor of 9! + 1 = 362881,
and the smallest natural number that cannot be represented as the determinant of a 10 × 10 (0,1)-matrix.... |
https://en.wikipedia.org/wiki/Difference%20set | In combinatorics, a difference set is a subset of size of a group of order such that every non-identity element of can be expressed as a product of elements of in exactly ways. A difference set is said to be cyclic, abelian, non-abelian, etc., if the group has the corresponding property. A difference set wit... |
https://en.wikipedia.org/wiki/Jena%20Observatory | Astrophysikalisches Institut und Universitäts-Sternwarte Jena (AIU Jena, Astrophysical Institute and University Observatory Jena, or simply Jena Observatory) is an astronomical observatory owned and operated by Friedrich Schiller University of Jena. It is located in Großschwabhausen close to Jena, Germany.
WASP-3c & T... |
https://en.wikipedia.org/wiki/Rhodamine%20B | Rhodamine B is a chemical compound and a dye. It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with fluorometers.
Rhodamine B is used in biology as a staining fluorescent dye, sometimes i... |
https://en.wikipedia.org/wiki/SigmaTel | SigmaTel, Inc., was an American system-on-a-chip (SoC), electronics and software company headquartered in Austin, Texas, that designed AV media player/recorder SoCs, reference circuit boards, SoC software development kits built around a custom cooperative kernel and all SoC device drivers including USB mass storage and... |
https://en.wikipedia.org/wiki/Immunostimulant | Immunostimulants, also known as immunostimulators, are substances (drugs and nutrients) that stimulate the immune system usually in a non-specific manner by inducing activation or increasing activity of any of its components. One notable example is the granulocyte macrophage colony-stimulating factor. The goal of this ... |
https://en.wikipedia.org/wiki/Bugonia | In the ancient Mediterranean region, bugonia or bougonia was a ritual based on the belief that bees were spontaneously (equivocally) generated from a cow's carcass, although it is possible that the ritual had more currency as a poetic and learned trope than as an actual practice.
Description
A detailed description of ... |
https://en.wikipedia.org/wiki/Tensor%20product%20of%20modules | In mathematics, the tensor product of modules is a construction that allows arguments about bilinear maps (e.g. multiplication) to be carried out in terms of linear maps. The module construction is analogous to the construction of the tensor product of vector spaces, but can be carried out for a pair of modules over a ... |
https://en.wikipedia.org/wiki/Marek%20Karpinski | Marek Karpinski is a computer scientist and mathematician known for his research in the theory of algorithms and their applications, combinatorial optimization, computational complexity, and mathematical foundations. He is a recipient of several research prizes in the above areas.
He is currently a Professor of Comput... |
https://en.wikipedia.org/wiki/Thue%27s%20lemma | In modular arithmetic, Thue's lemma roughly states that every modular integer may be represented by a "modular fraction" such that the numerator and the denominator have absolute values not greater than the square root of the modulus.
More precisely, for every pair of integers with , given two positive integers and ... |
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