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https://en.wikipedia.org/wiki/Augmented%20pentagonal%20prism | In geometry, the augmented pentagonal prism is one of the Johnson solids (). As the name suggests, it can be constructed by augmenting a pentagonal prism by attaching a square pyramid () to one of its equatorial faces.
External links
Johnson solids |
https://en.wikipedia.org/wiki/Biaugmented%20pentagonal%20prism | In geometry, the biaugmented pentagonal prism is one of the Johnson solids (). As the name suggests, it can be constructed by doubly augmenting a pentagonal prism by attaching square pyramids () to two of its nonadjacent equatorial faces. (The solid obtained by attaching pyramids to adjacent equatorial faces is not con... |
https://en.wikipedia.org/wiki/Augmented%20hexagonal%20prism | In geometry, the augmented hexagonal prism is one of the Johnson solids (). As the name suggests, it can be constructed by augmenting a hexagonal prism by attaching a square pyramid () to one of its equatorial faces. When two or three such pyramids are attached, the result may be a parabiaugmented hexagonal prism (), a... |
https://en.wikipedia.org/wiki/Parabiaugmented%20hexagonal%20prism | In geometry, the parabiaugmented hexagonal prism is one of the Johnson solids (). As the name suggests, it can be constructed by doubly augmenting a hexagonal prism by attaching square pyramids () to two of its nonadjacent, parallel (opposite) equatorial faces. Attaching the pyramids to nonadjacent, nonparallel equator... |
https://en.wikipedia.org/wiki/Metabiaugmented%20hexagonal%20prism | In geometry, the metabiaugmented hexagonal prism is one of the Johnson solids (). As the name suggests, it can be constructed by doubly augmenting a hexagonal prism by attaching square pyramids () to two of its nonadjacent, nonparallel equatorial faces. Attaching the pyramids to opposite equatorial faces yields a parab... |
https://en.wikipedia.org/wiki/Triaugmented%20hexagonal%20prism | In geometry, the triaugmented hexagonal prism is one of the Johnson solids (). As the name suggests, it can be constructed by triply augmenting a hexagonal prism by attaching square pyramids () to three of its nonadjacent equatorial faces.
See also
Hexagonal prism
References
External links
Johnson solids |
https://en.wikipedia.org/wiki/Augmented%20dodecahedron | In geometry, the augmented dodecahedron is one of the Johnson solids (), consisting of a dodecahedron with a pentagonal pyramid () attached to one of the faces. When two or three such pyramids are attached, the result may be a parabiaugmented dodecahedron (), a metabiaugmented dodecahedron (), or a triaugmented dodecah... |
https://en.wikipedia.org/wiki/Parabiaugmented%20dodecahedron | In geometry, the parabiaugmented dodecahedron is one of the Johnson solids (). It can be seen as a dodecahedron with two pentagonal pyramids () attached to opposite faces. When pyramids are attached to a dodecahedron in other ways, they may result in an augmented dodecahedron (), a metabiaugmented dodecahedron (), a tr... |
https://en.wikipedia.org/wiki/Metabiaugmented%20dodecahedron | In geometry, the metabiaugmented dodecahedron is one of the Johnson solids (). It can be viewed as a dodecahedron with two pentagonal pyramids () attached to two faces that are separated by one face. (The two faces are not opposite, but not adjacent either.) When pyramids are attached to a dodecahedron in other ways, t... |
https://en.wikipedia.org/wiki/Triaugmented%20dodecahedron | In geometry, the triaugmented dodecahedron is one of the Johnson solids (). It can be seen as a dodecahedron with three pentagonal pyramids () attached to nonadjacent faces. When pyramids are attached to a dodecahedron in other ways, they may result in an augmented dodecahedron (), a parabiaugmented dodecahedron (), a ... |
https://en.wikipedia.org/wiki/Parabigyrate%20rhombicosidodecahedron | In geometry, the parabigyrate rhombicosidodecahedron is one of the Johnson solids (). It can be constructed as a rhombicosidodecahedron with two opposing pentagonal cupolae rotated through 36 degrees. It is also a canonical polyhedron.
Alternative Johnson solids, constructed by rotating different cupolae of a rhombico... |
https://en.wikipedia.org/wiki/Paragyrate%20diminished%20rhombicosidodecahedron | In geometry, the paragyrate diminished rhombicosidodecahedron is one of the Johnson solids (). It can be constructed as a rhombicosidodecahedron with one pentagonal cupola rotated through 36 degrees, and the opposing pentagonal cupola removed.
External links
Johnson solids |
https://en.wikipedia.org/wiki/Metagyrate%20diminished%20rhombicosidodecahedron | In geometry, the metagyrate diminished rhombicosidodecahedron is one of the Johnson solids (). It can be constructed as a rhombicosidodecahedron with one pentagonal cupola () rotated through 36 degrees, and a non-opposing pentagonal cupola removed. (The cupolae cannot be adjacent.)
External links
Johnson solids |
https://en.wikipedia.org/wiki/Bigyrate%20diminished%20rhombicosidodecahedron | In geometry, the bigyrate diminished rhombicosidodecahedron is one of the Johnson solids (). It can be constructed as a rhombicosidodecahedron with two pentagonal cupolae rotated through 36 degrees, and a third pentagonal cupola removed. (None of the cupolae can be adjacent.)
External links
Johnson solids |
https://en.wikipedia.org/wiki/Gyrate%20bidiminished%20rhombicosidodecahedron | In geometry, the gyrate bidiminished rhombicosidodecahedron is one of the Johnson solids ().
It can be constructed as a rhombicosidodecahedron with two non-opposing pentagonal cupolae () removed and a third is rotated 36 degrees. Related Johnson solids are:
The diminished rhombicosidodecahedron () where one cupola is... |
https://en.wikipedia.org/wiki/Metabigyrate%20rhombicosidodecahedron | In geometry, the metabigyrate rhombicosidodecahedron is one of the Johnson solids (). It can be constructed as a rhombicosidodecahedron with two non-opposing pentagonal cupolae rotated through 36 degrees. It is also a canonical polyhedron.
Alternative Johnson solids, constructed by rotating different cupolae of a rhom... |
https://en.wikipedia.org/wiki/Gyroelongated%20pentagonal%20bicupola | In geometry, the gyroelongated pentagonal bicupola is one of the Johnson solids (). As the name suggests, it can be constructed by gyroelongating a pentagonal bicupola ( or ) by inserting a decagonal antiprism between its congruent halves.
The gyroelongated pentagonal bicupola is one of five Johnson solids which are c... |
https://en.wikipedia.org/wiki/Flickr | Flickr ( ; ) is an image hosting and video hosting service, as well as an online community, founded in Canada and headquartered in the United States. It was created by Ludicorp in 2004 and was previously a common way for amateur and professional photographers to host high-resolution photos. It has changed ownership sev... |
https://en.wikipedia.org/wiki/Bill%20English%20%28computer%20engineer%29 | William Kirk English (January 27, 1929July 26, 2020) was an American computer engineer who contributed to the development of the computer mouse while working for Douglas Engelbart at SRI International's Augmentation Research Center. He would later work for Xerox PARC and Sun Microsystems.
Early life
English was born o... |
https://en.wikipedia.org/wiki/Index%20of%20construction%20articles | This page is a list of construction topics.
A
Abated
- Abrasive blasting
- AC power plugs and sockets
- Access mat
- Accrington brick
- Accropode
- Acid brick
- Acoustic plaster
- Active daylighting
- Adaptive reuse
- Aerial crane
- Aerosol paint
- Aggregate base
- Agile construction
- Akmon
- Alternative natural mate... |
https://en.wikipedia.org/wiki/OpenSolaris | OpenSolaris () is a discontinued open-source computer operating system based on Solaris and created by Sun Microsystems. It was also, perhaps confusingly, the name of a project initiated by Sun to build a developer and user community around the eponymous operating system software.
OpenSolaris is a descendant of the U... |
https://en.wikipedia.org/wiki/Homo%20Ludens | Homo Ludens is a book originally published in Dutch in 1938 by Dutch historian and cultural theorist Johan Huizinga.
It discusses the importance of the play element of culture and society. Huizinga suggests that play is primary to and a necessary (though not sufficient) condition of the generation of culture. The Latin... |
https://en.wikipedia.org/wiki/Fagan%20inspection | A Fagan inspection is a process of trying to find defects in documents (such as source code or formal specifications) during various phases of the software development process. It is named after Michael Fagan, who is credited with the invention of formal software inspections.
Fagan inspection defines a process as a ce... |
https://en.wikipedia.org/wiki/RS-485 | RS-485, also known as TIA-485(-A) or EIA-485, is a standard, originally introduced in 1983, defining the electrical characteristics of drivers and receivers for use in serial communications systems. Electrical signaling is balanced, and multipoint systems are supported. The standard is jointly published by the Telecomm... |
https://en.wikipedia.org/wiki/Overdominance | Overdominance is a rare condition in genetics where the phenotype of the heterozygote lies outside the phenotypical range of both homozygous parents. Overdominance can also be described as heterozygote advantage regulated by a single genomic locus, wherein heterozygous individuals have a higher fitness than homozygous ... |
https://en.wikipedia.org/wiki/Change%20of%20basis | In mathematics, an ordered basis of a vector space of finite dimension allows representing uniquely any element of the vector space by a coordinate vector, which is a sequence of scalars called coordinates. If two different bases are considered, the coordinate vector that represents a vector on one basis is, in gene... |
https://en.wikipedia.org/wiki/ELAN%20%28programming%20language%29 | ELAN is an interpreted educational programming language for learning and teaching systematic programming.
It was developed in 1974 by C.H.A. Koster and a group at the Technical University of Berlin as an alternative to BASIC in teaching, and approved for use in secondary schools in Germany by the "Arbeitskreis Schulsp... |
https://en.wikipedia.org/wiki/Stream%20cipher%20attacks | Stream ciphers, where plaintext bits are combined with a cipher bit stream by an exclusive-or operation (xor), can be very secure if used properly. However, they are vulnerable to attacks if certain precautions are not followed:
keys must never be used twice
valid decryption should never be relied on to indicate authe... |
https://en.wikipedia.org/wiki/Surrogate%20endpoint | In clinical trials, a surrogate endpoint (or surrogate marker) is a measure of effect of a specific treatment that may correlate with a real clinical endpoint but does not necessarily have a guaranteed relationship. The National Institutes of Health (USA) defines surrogate endpoint as "a biomarker intended to substitut... |
https://en.wikipedia.org/wiki/Stunt%20Car%20Racer | Stunt Car Racer (published as Stunt Track Racer in the United States) is a racing video game developed by Geoff Crammond. It was published in 1989 by MicroProse, under their MicroStyle and MicroPlay labels in the United Kingdom and in the United States, respectively. The game pits two racers on an elevated track on whi... |
https://en.wikipedia.org/wiki/Data%20control%20language | A data control language (DCL) is a syntax similar to a computer programming language used to control access to data stored in a database (authorization). In particular, it is a component of Structured Query Language (SQL). Data Control Language is one of the logical group in SQL Commands. SQL is the standard language f... |
https://en.wikipedia.org/wiki/Expensive%20Typewriter | Expensive Typewriter was a pioneering text editor program that ran on the DEC PDP-1 computer which had been delivered to MIT in the early 1960s.
Description
Since the program could drive an IBM Selectric typewriter (a letter-quality printer), it may be considered the first word processing software. It was written and... |
https://en.wikipedia.org/wiki/Frontlight | A frontlight is a means of illuminating a display device, usually a liquid crystal display (LCD), which would otherwise be viewed in ambient light. This improves its performance in poor lighting conditions.
An LCD presents an image by absorbing some light passing through it. When an electric field is applied across th... |
https://en.wikipedia.org/wiki/Computational%20science | Computational science, also known as scientific computing, technical computing or scientific computation (SC), is a division of science that uses advanced computing capabilities to understand and solve complex physical problems. This includes
Algorithms (numerical and non-numerical): mathematical models, computation... |
https://en.wikipedia.org/wiki/Design%E2%80%93build | Design–build (or design/build, and abbreviated D–B or D/B accordingly), also known as alternative delivery, is a project delivery system used in the construction industry. It is a method to deliver a project in which the design and construction services are contracted by a single entity known as the design–builder or d... |
https://en.wikipedia.org/wiki/Carmichael%20function | In number theory, a branch of mathematics, the Carmichael function of a positive integer is the smallest positive integer such that
holds for every integer coprime to . In algebraic terms, is the exponent of the multiplicative group of integers modulo .
The Carmichael function is named after the American mathema... |
https://en.wikipedia.org/wiki/CMS-2 | CMS-2 is an embedded systems programming language used by the United States Navy. It was an early attempt to develop a standardized high-level computer programming language intended to improve code portability and reusability. CMS-2 was developed primarily for the US Navy’s tactical data systems (NTDS).
CMS-2 was deve... |
https://en.wikipedia.org/wiki/Signed-digit%20representation | In mathematical notation for numbers, a signed-digit representation is a positional numeral system with a set of signed digits used to encode the integers.
Signed-digit representation can be used to accomplish fast addition of integers because it can eliminate chains of dependent carries. In the binary numeral system... |
https://en.wikipedia.org/wiki/Furnace%20anneal | Furnace annealing is a process used in semiconductor device fabrication which consist of heating multiple semiconductor wafers in order to affect their electrical properties. Heat treatments are designed for different effects. Wafers can be heated in order to activate dopants, change film to film or film to wafer subst... |
https://en.wikipedia.org/wiki/Double%20switching | Double switching, double cutting, or double breaking is the practice of using a multipole switch to close or open both the positive and negative sides of a DC electrical circuit, or both the hot and neutral sides of an AC circuit. This technique is used to prevent shock hazard in electric devices connected with unpolar... |
https://en.wikipedia.org/wiki/Project%20delivery%20method | Project delivery methods are systems used by a construction manager (also known as agency) or owner to carry-out a construction project while mitigating the risks to the scope of work, time, budget, quality and safety of the project. These risks ranges from cost overruns, time delays and conflict among the various part... |
https://en.wikipedia.org/wiki/Design%E2%80%93bid%E2%80%93build | Design–bid–build (or design/bid/build, and abbreviated D–B–B or D/B/B accordingly), also known as Design–tender (or "design/tender"), traditional method, or hardbid, is a project delivery method in which the agency or owner contracts with separate entities for the design and construction of a project.
Design–bid–build... |
https://en.wikipedia.org/wiki/Design%20engineer | A design engineer is an engineer focused on the engineering design process in any of the various engineering disciplines (including civil, mechanical, electrical, chemical, textiles, aerospace, nuclear, manufacturing, systems, and structural /building/architectural) and design disciplines like Human-Computer Interacti... |
https://en.wikipedia.org/wiki/Provable%20security | Provable security refers to any type or level of computer security that can be proved. It is used in different ways by different fields.
Usually, this refers to mathematical proofs, which are common in cryptography. In such a proof, the capabilities of the attacker are defined by an adversarial model (also referred to... |
https://en.wikipedia.org/wiki/Clock%20synchronization | Clock synchronization is a topic in computer science and engineering that aims to coordinate otherwise independent clocks. Even when initially set accurately, real clocks will differ after some amount of time due to clock drift, caused by clocks counting time at slightly different rates. There are several problems that... |
https://en.wikipedia.org/wiki/Hard-core%20predicate | In cryptography, a hard-core predicate of a one-way function f is a predicate b (i.e., a function whose output is a single bit) which is easy to compute (as a function of x) but is hard to compute given f(x). In formal terms, there is no probabilistic polynomial-time (PPT) algorithm that computes b(x) from f(x) with p... |
https://en.wikipedia.org/wiki/Dual%20basis%20in%20a%20field%20extension | In mathematics, the linear algebra concept of dual basis can be applied in the context of a finite extension L/K, by using the field trace. This requires the property that the field trace TrL/K provides a non-degenerate quadratic form over K. This can be guaranteed if the extension is separable; it is automatically tr... |
https://en.wikipedia.org/wiki/Dual%20basis | In linear algebra, given a vector space with a basis of vectors indexed by an index set (the cardinality of is the dimension of ), the dual set of is a set of vectors in the dual space with the same index set I such that and form a biorthogonal system. The dual set is always linearly independent but does not n... |
https://en.wikipedia.org/wiki/Quadratic%20residuosity%20problem | The quadratic residuosity problem (QRP) in computational number theory is to decide, given integers and , whether is a quadratic residue modulo or not.
Here for two unknown primes and , and is among the numbers which are not obviously quadratic non-residues (see below).
The problem was first described by Gauss i... |
https://en.wikipedia.org/wiki/Derrick | A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a stiffleg derrick. Th... |
https://en.wikipedia.org/wiki/Total%20internal%20reflection%20fluorescence%20microscope | A total internal reflection fluorescence microscope (TIRFM) is a type of microscope with which a thin region of a specimen, usually less than 200 nanometers can be observed.
TIRFM is an imaging modality which uses the excitation of fluorescent cells in a thin optical specimen section that is supported on a glass slide... |
https://en.wikipedia.org/wiki/Dumper | A dumper or dumper truck (British English) or dump truck (North American English) is a truck designed for carrying bulk material, often on building sites. A dumper has a body which tilts or opens at the back for unloading and is usually an open 4-wheeled vehicle with the load skip in front of the driver. The skip can t... |
https://en.wikipedia.org/wiki/Scratch%20drive%20actuator | A scratch drive actuator (SDA) is a microelectromechanical system device that converts electrical energy into one-dimensional motion.
Description
The actuator component can come in many shapes and sizes, depending on the fabrication method used. It can be visualised as an 'L'. The smaller end is called the 'bushing'.
... |
https://en.wikipedia.org/wiki/Protocooperation | Protocooperation is where two species interact with each other beneficially; they have no need to interact with each other - they interact purely for the gain that they receive from doing this. It is not at all necessary for protocooperation to occur; growth and survival is possible in the absence of the interaction. T... |
https://en.wikipedia.org/wiki/Royal%20Engineers%20Museum | The Royal Engineers Museum, Library and Archive is a military engineering museum and library in Gillingham, Kent. It tells the story of the Corps of Royal Engineers and British military engineering in general.
History
The 'Ravelin Building', which was designed by Major E.C.S. Moore, Royal Engineers and was completed ... |
https://en.wikipedia.org/wiki/Storage%20Resource%20Broker | Storage Resource Broker (SRB) is data grid management computer software used in computational science research projects. SRB is a logical distributed file system based on a client-server architecture which presents users with a single global logical namespace or file hierarchy. Essentially, the software enables a user ... |
https://en.wikipedia.org/wiki/Central%20European%20Olympiad%20in%20Informatics | The Central European Olympiad in Informatics (CEOI) is an annual informatics competition for secondary school students. Each of the participating central European countries (plus one or two guest countries, and a local team from the host area) sends a team of up to four contestants, a team leader and a deputy team lead... |
https://en.wikipedia.org/wiki/Penguin%20Adventure | is a racing platform game released by Konami in 1986, and a sequel to 1983's Antarctic Adventure. The game marks the professional debut of game designer Hideo Kojima, who participated in the planning for this game.
The story follows Penta, a penguin who has to bring home a golden apple in order to cure Penguette, the ... |
https://en.wikipedia.org/wiki/Schmaltz%20herring | Schmaltz herring (Yiddish) is herring caught just before spawning, when the fat (schmaltz) in the fish is at a maximum. Colloquially, schmaltz herring refers to this fish pickled in brine: see pickled herring.
References
External links
Herring dishes
Food preservation
Ashkenazi Jewish cuisine
Shabbat food |
https://en.wikipedia.org/wiki/Organogenesis | Organogenesis is the phase of embryonic development that starts at the end of gastrulation and continues until birth. During organogenesis, the three germ layers formed from gastrulation (the ectoderm, endoderm, and mesoderm) form the internal organs of the organism.
The cells of each of the three germ layers undergo... |
https://en.wikipedia.org/wiki/Segmentation%20and%20reassembly | Segmentation and reassembly (SAR) is the process used to fragment and reassemble variable length packets into fixed length cells so as to allow them to be transported across Asynchronous Transfer Mode (ATM) networks or other cell based infrastructures. Since ATM's payload is only 48 bytes, nearly every packet from any ... |
https://en.wikipedia.org/wiki/Friend-to-friend | A friend-to-friend (or F2F) computer network is a type of peer-to-peer network in which users only make direct connections with people they know. Passwords or digital signatures can be used for authentication.
Unlike other kinds of private P2P, users in a friend-to-friend network cannot find out who else is participat... |
https://en.wikipedia.org/wiki/Fluorescence%20microscope | A fluorescence microscope is an optical microscope that uses fluorescence instead of, or in addition to, scattering, reflection, and attenuation or absorption, to study the properties of organic or inorganic substances. "Fluorescence microscope" refers to any microscope that uses fluorescence to generate an image, whe... |
https://en.wikipedia.org/wiki/Bottom%20trawling | Bottom trawling is trawling (towing a trawl, which is a fishing net) along the seafloor. It is also referred to as "dragging". The scientific community divides bottom trawling into benthic trawling and demersal trawling. Benthic trawling is towing a net at the very bottom of the ocean and demersal trawling is towing a ... |
https://en.wikipedia.org/wiki/Private%20information%20retrieval | In cryptography, a private information retrieval (PIR) protocol is a protocol that allows a user to retrieve an item from a server in possession of a database without revealing which item is retrieved. PIR is a weaker version of 1-out-of-n oblivious transfer, where it is also required that the user should not get infor... |
https://en.wikipedia.org/wiki/Guard%20%28computer%20science%29 | In computer programming, a guard is a boolean expression that must evaluate to true if the program execution is to continue in the branch in question. Regardless of which programming language is used, a guard clause, guard code, or guard statement, is a check of integrity preconditions used to avoid errors during execu... |
https://en.wikipedia.org/wiki/Raoul%20Hausmann | Raoul Hausmann (July 12, 1886 – February 1, 1971) was an Austrian artist and writer. One of the key figures in Berlin Dada, his experimental photographic collages, sound poetry, and institutional critiques would have a profound influence on the European Avant-Garde in the aftermath of World War I.
Early biography
Rao... |
https://en.wikipedia.org/wiki/Ample%20line%20bundle | In mathematics, a distinctive feature of algebraic geometry is that some line bundles on a projective variety can be considered "positive", while others are "negative" (or a mixture of the two). The most important notion of positivity is that of an ample line bundle, although there are several related classes of line b... |
https://en.wikipedia.org/wiki/Confocal%20microscopy | Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. Capturing multip... |
https://en.wikipedia.org/wiki/Fibrinoid%20necrosis | Fibrinoid necrosis is a specific pattern of irreversible, uncontrolled cell death that occurs when antigen-antibody complexes are deposited in the walls of blood vessels along with fibrin. It is common in the immune-mediated vasculitides which are a result of type III hypersensitivity. When stained with hematoxylin and... |
https://en.wikipedia.org/wiki/Social%20software%20%28research%20field%29 | In philosophy and the social sciences, social software is an interdisciplinary research program that borrows
mathematical tools and techniques from game theory and computer science in order to analyze and design social procedures. The goals of research in this field are modeling social situations, developing theories o... |
https://en.wikipedia.org/wiki/Rational%20agent | A rational agent or rational being is a person or entity that always aims to perform optimal actions based on given premises and information. A rational agent can be anything that makes decisions, typically a person, firm, machine, or software.
The concept of rational agents can be found in various disciplines such as... |
https://en.wikipedia.org/wiki/ClanLib | ClanLib is a video game SDK, supporting Microsoft Windows, macOS, and Linux, with partial support for mobile platforms. It has full hardware accelerated graphics support through OpenGL, and also a software renderer. ClanLib also helps in playing sound, using the Vorbis or MikMod libraries, and has classes for collision... |
https://en.wikipedia.org/wiki/Eqn%20%28software%29 | Part of the troff suite of Unix document layout tools, eqn is a preprocessor that formats equations for printing. A similar program, neqn, accepted the same input as eqn, but produced output tuned to look better in nroff. The eqn program was created in 1974 by Brian Kernighan and Lorinda Cherry.
It was implemented usi... |
https://en.wikipedia.org/wiki/Jensen%27s%20alpha | In finance, Jensen's alpha (or Jensen's Performance Index, ex-post alpha) is used to determine the abnormal return of a security or portfolio of securities over the theoretical expected return. It is a version of the standard alpha based on a theoretical performance instead of a market index.
The security could be any... |
https://en.wikipedia.org/wiki/Diaphragm%20%28mechanical%20device%29 | In mechanics, a diaphragm is a sheet of a semi-flexible material anchored at its periphery and most often round in shape. It serves either as a barrier between two chambers, moving slightly up into one chamber or down into the other depending on differences in pressure, or as a device that vibrates when certain frequen... |
https://en.wikipedia.org/wiki/List%20of%20undecidable%20problems | In computability theory, an undecidable problem is a type of computational problem that requires a yes/no answer, but where there cannot possibly be any computer program that always gives the correct answer; that is, any possible program would sometimes give the wrong answer or run forever without giving any answer. Mo... |
https://en.wikipedia.org/wiki/Pseudo-Hadamard%20transform | The pseudo-Hadamard transform is a reversible transformation of a bit string that provides cryptographic diffusion. See Hadamard transform.
The bit string must be of even length so that it can be split into two bit strings a and b of equal lengths, each of n bits. To compute the transform for Twofish algorithm, a' an... |
https://en.wikipedia.org/wiki/Block%20design | In combinatorial mathematics, a block design is an incidence structure consisting of a set together with a family of subsets known as blocks, chosen such that frequency of the elements satisfies certain conditions making the collection of blocks exhibit symmetry (balance). Block designs have applications in many areas,... |
https://en.wikipedia.org/wiki/Ripple%20effect | A ripple effect occurs when an initial disturbance to a system propagates outward to disturb an increasingly larger portion of the system, like ripples expanding across the water when an object is dropped into it.
The ripple effect is often used colloquially to mean a multiplier in macroeconomics. For example, an indi... |
https://en.wikipedia.org/wiki/Interactive%20kiosk | An interactive kiosk is a computer terminal featuring specialized hardware and software that provides access to information and applications for communication, commerce, entertainment, or education.
By 2010, the largest bill pay kiosk network is AT&T for the phone customers which allows customers to pay their phone bi... |
https://en.wikipedia.org/wiki/Host-based%20intrusion%20detection%20system | A host-based intrusion detection system (HIDS) is an intrusion detection system that is capable of monitoring and analyzing the internals of a computing system as well as the network packets on its network interfaces, similar to the way a network-based intrusion detection system (NIDS) operates. This was the first type... |
https://en.wikipedia.org/wiki/Path%20%28topology%29 | In mathematics, a path in a topological space is a continuous function from the closed unit interval into
Paths play an important role in the fields of topology and mathematical analysis.
For example, a topological space for which there exists a path connecting any two points is said to be path-connected. Any spa... |
https://en.wikipedia.org/wiki/Loop%20%28topology%29 | In mathematics, a loop in a topological space is a continuous function from the unit interval to such that In other words, it is a path whose initial point is equal to its terminal point.
A loop may also be seen as a continuous map from the pointed unit circle into , because may be regarded as a quotient of u... |
https://en.wikipedia.org/wiki/Korean%20language%20and%20computers | The writing system of the Korean language is a syllabic alphabet of character parts () organized into character blocks () representing syllables. The character parts cannot be written from left to right on the computer, as in many Western languages. Every possible syllable in Korean would have to be rendered as syllabl... |
https://en.wikipedia.org/wiki/One-time%20password | A one-time password (OTP), also known as a one-time PIN, one-time authorization code (OTAC) or dynamic password, is a password that is valid for only one login session or transaction, on a computer system or other digital device. OTPs avoid several shortcomings that are associated with traditional (static) password-bas... |
https://en.wikipedia.org/wiki/Pl%C3%BCcker%20embedding | In mathematics, the Plücker map embeds the Grassmannian , whose elements are k-dimensional subspaces of an n-dimensional vector space V, either real or complex, in a projective space, thereby realizing it as a projective algebraic variety. More precisely, the Plücker map embeds into the projectivization of the -th e... |
https://en.wikipedia.org/wiki/William%20Heerlein%20Lindley | Sir William Heerlein Lindley (30 January 1853, in Hamburg – 30 December 1917, in London) was a British civil engineer.
One of three sons of the famous British engineer William Lindley, WH Lindley worked together with his father on a number of projects and was a respected engineer in his own right. Between 1881 and 18... |
https://en.wikipedia.org/wiki/Domineering | Domineering (also called Stop-Gate or Crosscram) is a mathematical game that can be played on any collection of squares on a sheet of graph paper. For example, it can be played on a 6×6 square, a rectangle, an entirely irregular polyomino, or a combination of any number of such components. Two players have a collection... |
https://en.wikipedia.org/wiki/Critical%20opalescence | Critical opalescence is a phenomenon which arises in the region of a continuous, or second-order, phase transition. Originally reported by Charles Cagniard de la Tour in 1823 in mixtures of alcohol and water, its importance was recognised by Thomas Andrews in 1869 following his experiments on the liquid-gas transition ... |
https://en.wikipedia.org/wiki/Schnorr%20group | A Schnorr group, proposed by Claus P. Schnorr, is a large prime-order subgroup of , the multiplicative group of integers modulo for some prime . To generate such a group, generate , , such that
with , prime. Then choose any in the range until you find one such that
.
This value
is a generator of a subgroup of ... |
https://en.wikipedia.org/wiki/EchoLink | EchoLink is a computer-based Amateur Radio system distributed free of charge that allows radio amateurs to communicate with other amateur radio operators using Voice over IP (VoIP) technology on the Internet for at least part of the path between them. It was designed by Jonathan Taylor, a radio amateur with call sign K... |
https://en.wikipedia.org/wiki/Image%20resolution | Image resolution is the level of detail an image holds. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail.
Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other and still be visibly resolved. Res... |
https://en.wikipedia.org/wiki/Pairing | In mathematics, a pairing is an R-bilinear map from the Cartesian product of two R-modules, where the underlying ring R is commutative.
Definition
Let R be a commutative ring with unit, and let M, N and L be R-modules.
A pairing is any R-bilinear map . That is, it satisfies
,
and
for any and any and any . Equi... |
https://en.wikipedia.org/wiki/Linux-VServer | Linux-VServer is a virtual private server implementation that was created by adding operating system-level virtualization capabilities to the Linux kernel. It is developed and distributed as open-source software.
Details
The project was started by Jacques Gélinas. It is now maintained by Herbert Pötzl. It is not rela... |
https://en.wikipedia.org/wiki/Seaman%20%28video%20game%29 | is a virtual pet video game for the Sega Dreamcast. It is one of the few Dreamcast games to take advantage of the microphone attachment. The game developed a cult following for its dark humor, bizarre aesthetics, and innovative gameplay.
Seaman was released multiple times, including a limited edition demo version titl... |
https://en.wikipedia.org/wiki/Green%27s%20relations | In mathematics, Green's relations are five equivalence relations that characterise the elements of a semigroup in terms of the principal ideals they generate. The relations are named for James Alexander Green, who introduced them in a paper of 1951. John Mackintosh Howie, a prominent semigroup theorist, described this ... |
https://en.wikipedia.org/wiki/Retail%20software | Retail software is computer software, typically installed on PC-type computers post 2005, delivered via the Internet (also known as cloud-based). Traditionally this software was delivered via physical data storage media sold to end consumer but very few companies still provide their software using physical media. The s... |
https://en.wikipedia.org/wiki/RC%20oscillator | Linear electronic oscillator circuits, which generate a sinusoidal output signal, are composed of an amplifier and a frequency selective element, a filter. A linear oscillator circuit which uses an RC network, a combination of resistors and capacitors, for its frequency selective part is called an RC oscillator.
Des... |
https://en.wikipedia.org/wiki/Texture%20memory | Texture memory is a type of digital storage that makes texture data readily available to video rendering processors (also known as GPUs), typically 3D graphics hardware. It is most often (but not always) implemented as specialized RAM (TRAM) that is designed for rapid reading and writing, enabling the graphics hardware... |
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