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https://en.wikipedia.org/wiki/Dedekind%20psi%20function | In number theory, the Dedekind psi function is the multiplicative function on the positive integers defined by
where the product is taken over all primes dividing (By convention, , which is the empty product, has value 1.) The function was introduced by Richard Dedekind in connection with modular functions.
The val... |
https://en.wikipedia.org/wiki/CO2%20rocket | {{DISPLAYTITLE:CO2 rocket}}
A carbon dioxide rocket (CO2 rocket) is a type of rocket that uses carbon dioxide as a propellant. It should be fired outdoors.
Carbon dioxide rocket (slurry, hybrid, etc.) can be used in model rocketry, where it is also known as a pop rocket. Its engine could generate a specific impulse of... |
https://en.wikipedia.org/wiki/Environmental%20radioactivity | Environmental radioactivity is produced by radioactive materials in the human environment. While some radioisotopes, such as strontium-90 (90Sr) and technetium-99 (99Tc), are only found on Earth as a result of human activity, and some, like potassium-40 (40K), are only present due to natural processes, a few isotopes,... |
https://en.wikipedia.org/wiki/Odontode | Odontodes, or dermal teeth, are hard structures found on the external surfaces of animals or near internal openings. They consist of a soft pulp surrounded by dentine and covered by a mineralized substance such as enamel, a structure similar to that of teeth. They generally do not have the same function as teeth, and a... |
https://en.wikipedia.org/wiki/Coherent%20risk%20measure | In the fields of actuarial science and financial economics there are a number of ways that risk can be defined; to clarify the concept theoreticians have described a number of properties that a risk measure might or might not have. A coherent risk measure is a function that satisfies properties of monotonicity, sub-add... |
https://en.wikipedia.org/wiki/Dynamics%20of%20Markovian%20particles | Dynamics of Markovian particles (DMP) is the basis of a theory for kinetics of particles in open heterogeneous systems. It can be looked upon as an application of the notion of stochastic process conceived as a physical entity; e.g. the particle moves because there is a transition probability acting on it.
Two particu... |
https://en.wikipedia.org/wiki/New%20Zealand%20Dairy%20Workers%20Union | The New Zealand Dairy Workers Union (NZDWU) is a national trade union in New Zealand. It represents 7,000 workers active in dairy factories, town milk supply, processing plants, stores and warehousing, packing, can-making, and other ancillary activities including drivers.
The NZDWU is affiliated with the New Zealand C... |
https://en.wikipedia.org/wiki/Frost%20line%20%28astrophysics%29 | In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the minimum distance from the central protostar of a solar nebula where the temperature is low enough for volatile compounds such as water, ammonia, methane, carbon dioxide and carbon monoxide to condense into solid grains, w... |
https://en.wikipedia.org/wiki/EF%20Johnson%20Technologies | EF Johnson Technologies, Inc. is a two-way radio manufacturer founded by its namesake, Edgar Frederick Johnson, in Waseca, Minnesota, United States in 1923. Today it is a wholly owned subsidiary of JVCKenwood of Yokohama, Japan.
EF Johnson Technologies offers a wide range of equipment for use by law enforcement, firef... |
https://en.wikipedia.org/wiki/MDN%20Web%20Docs | MDN Web Docs, previously Mozilla Developer Network and formerly Mozilla Developer Center, is a documentation repository and learning resource for web developers. It was started by Mozilla in 2005 as a unified place for documentation about open web standards, Mozilla's own projects, and developer guides.
MDN Web Docs c... |
https://en.wikipedia.org/wiki/European%20Grid%20Infrastructure | European Grid Infrastructure (EGI) is a series of efforts to provide access to high-throughput computing resources across Europe using grid computing techniques. The EGI links centres in different European countries to support international research in many scientific disciplines. Following a series of research project... |
https://en.wikipedia.org/wiki/Regular%20part | In mathematics, the regular part of a Laurent series consists of the series of terms with positive powers. That is, if
then the regular part of this Laurent series is
In contrast, the series of terms with negative powers is the principal part. |
https://en.wikipedia.org/wiki/Compound%20chocolate | Compound chocolate is a product made from a combination of cocoa, vegetable fat and sweeteners. It is used as a lower-cost alternative to pure chocolate, as it uses less-expensive hard vegetable fats such as coconut oil or palm kernel oil in place of the more expensive cocoa butter. It may also be known as "compound co... |
https://en.wikipedia.org/wiki/Poekilopleuron | Poekilopleuron (meaning "varied ribs") is a genus of tetanuran dinosaur, which lived during the middle Bathonian of the Jurassic, about 168 to 166 million years ago. The genus has been used under many different spelling variants, although only one, Poekilopleuron, is valid. The type species is P. bucklandii, named afte... |
https://en.wikipedia.org/wiki/Posterolateral%20tract | The posterolateral tract (fasciculus of Lissauer, Lissauer's tract, tract of Lissauer, dorsolateral fasciculus, dorsolateral tract, zone of Lissauer) is a small strand situated in relation to the tip of the posterior column close to the entrance of the posterior nerve roots. It is present throughout the spinal cord, an... |
https://en.wikipedia.org/wiki/Superior%20cerebellar%20peduncle | In the human brain, the superior cerebellar peduncle (brachium conjunctivum) is a paired structure of white matter that connects the cerebellum to the midbrain. It consists mainly of efferent fibers, the cerebellothalamic tract that runs from a cerebellar hemisphere to the contralateral thalamus, and the cerebellorubra... |
https://en.wikipedia.org/wiki/Middle%20cerebellar%20peduncle | The middle cerebellar peduncle (or brachium pontis) is a paired structure of the brain. It connects the pons to the cerebellum, with fibres originating from the pontine nucleus and travelling to the opposite hemisphere of the cerebellar cortex. It is supplied by the anterior inferior cerebellar artery (AICA) and branch... |
https://en.wikipedia.org/wiki/Fruit%20Pie%20the%20Magician | Fruit Pie the Magician was the official mascot for Hostess fruit pies for over three decades, from 1973 until early 2006. Fruit Pie the Magician was featured in print ads in comic books as well as animated in television commercials. The character appeared on Hostess product labels as an anthropomorphic fruit pie sporti... |
https://en.wikipedia.org/wiki/Image%20analogy | An image analogy is a method of creating an image filter automatically from training data. In an image analogy process, the transformation between two images A and A' is "learned". Later, given a different image B, its "analogy" image B' can be generated based on the learned transformation.
The image analogy method h... |
https://en.wikipedia.org/wiki/Recognition-primed%20decision | Recognition-primed decision (RPD) is a model of how people make quick, effective decisions when faced with complex situations. In this model, the decision maker is assumed to generate a possible course of action, compare it to the constraints imposed by the situation, and select the first course of action that is not r... |
https://en.wikipedia.org/wiki/George%20Crawford%20Hyndman | George Crawford Hyndman (1796–1867) was an Irish auctioneer and amateur biologist.
He was the son of Cherry Crawford Hyndman (1766-1845) and James Hyndman (1761?–1825), a Belfast Woollen merchant. Both parents, in the 1790s, were active in the republican Society of United Irishmen. In heavily garrisoned Belfast, neit... |
https://en.wikipedia.org/wiki/Cephalonega | Cephalonega stepanovi is a fossil organism from Ediacaran deposits of the Arkhangelsk Region, Russia. It was described by Mikhail A. Fedonkin in 1976
Name
Its original genus name Onega comes from the Onega Peninsula of the White Sea, where the first fossils were found. The species name was given to honour V.A. Stepan... |
https://en.wikipedia.org/wiki/Message%20sequence%20chart | A message sequence chart (or MSC) is an interaction diagram from the SDL family standardized by the International Telecommunication Union.
The purpose of recommending MSC (Message Sequence Chart) is to provide a trace language for the specification and description of the communication behaviour of system components an... |
https://en.wikipedia.org/wiki/Hiemalora | Hiemalora is a fossil of the Ediacaran biota, reaching around 3 cm in diameter, which superficially resembles a sea anemone. The genus has a sack-like body with faint radiating lines originally interpreted as tentacles, but discovery of a frond-like structure seemingly attached to some Heimalora has added weight to a ... |
https://en.wikipedia.org/wiki/Gong%20farmer | Gong farmer (also gongfermor, gongfermour, gong-fayer, gong-fower or gong scourer) was a term that entered use in Tudor England to describe someone who dug out and removed human excrement from privies and cesspits. The word "gong" was used for both a privy and its contents. As the work was considered unclean and off-pu... |
https://en.wikipedia.org/wiki/Equivalent%20temperature | In atmospheric science, equivalent temperature is the temperature of air in a parcel from which all the water vapor has been extracted by an adiabatic process.
Air contains water vapor that has been evaporated into it from liquid sources (lakes, sea, etc...). The energy needed to do that has been taken from the air. ... |
https://en.wikipedia.org/wiki/Enzyme%20induction%20and%20inhibition | Enzyme induction is a process in which a molecule (e.g. a drug) induces (i.e. initiates or enhances) the expression of an enzyme.
Enzyme inhibition can refer to
the inhibition of the expression of the enzyme by another molecule
interference at the enzyme-level, basically with how the enzyme works. This can be compe... |
https://en.wikipedia.org/wiki/Dynamic%20bandwidth%20allocation | Dynamic bandwidth allocation is a technique by which traffic bandwidth in a shared telecommunications medium can be allocated on demand and fairly between different users of that bandwidth. This is a form of bandwidth management, and is essentially the same thing as statistical multiplexing. Where the sharing of a link... |
https://en.wikipedia.org/wiki/Shoals%20Marine%20Laboratory | Shoals Marine Laboratory (SML) is a seasonal marine field station located on Appledore Island, Maine, in the United States. Appledore Island is the largest of the Isles of Shoals archipelago, a group of rocky islands just offshore of the coastline of Maine and New Hampshire. The laboratory is cooperatively operated and... |
https://en.wikipedia.org/wiki/Wrack%20%28seaweed%29 | Wrack is part of the common names of several species of seaweed in the family Fucaceae. It may also refer more generally to any seaweeds or seagrasses that wash up on beaches and may accumulate in the wrack zone.
It consists largely of species of Fucus — brown seaweeds with flat branched ribbon-like fronds, characteri... |
https://en.wikipedia.org/wiki/Wrong%20Planet | Wrong Planet (sometimes referred to by its URL, wrongplanet.net) is an online community for "individuals (and parents / professionals of those) with Autism, Asperger's Syndrome, ADHD, PDDs, and other neurological differences". The site was started in 2004 by Dan Grover and Alex Plank and includes a chatroom, a forum, a... |
https://en.wikipedia.org/wiki/Proterogyrinus | Proterogyrinus is an extinct genus of early tetrapods from the order Embolomeri. Fossil remains of Proterogyrinus have been found in Scotland, UK, and West Virginia, United States, and date back to the Serpukhovian (mid-Carboniferous period), which is from about 331 to 323 million years ago. The genus was originally na... |
https://en.wikipedia.org/wiki/Viola%20canadensis | Viola canadensis is a flowering plant in the Violaceae family. It is commonly known as Canadian white violet, Canada violet, tall white violet, or white violet. It is widespread across much of Canada and the United States, from Alaska to Newfoundland, south as far as Georgia and Arizona. It is a perennial herb and the ... |
https://en.wikipedia.org/wiki/Tanabe%E2%80%93Sugano%20diagram | In coordination chemistry, Tanabe–Sugano diagrams are used to predict absorptions in the ultraviolet (UV), visible and infrared (IR) electromagnetic spectrum of coordination compounds. The results from a Tanabe–Sugano diagram analysis of a metal complex can also be compared to experimental spectroscopic data. They are... |
https://en.wikipedia.org/wiki/Classical%20modular%20curve | In number theory, the classical modular curve is an irreducible plane algebraic curve given by an equation
,
such that is a point on the curve. Here denotes the -invariant.
The curve is sometimes called , though often that notation is used for the abstract algebraic curve for which there exist various models. A re... |
https://en.wikipedia.org/wiki/Frey%20curve | In mathematics, a Frey curve or Frey–Hellegouarch curve is the elliptic curve
associated with a (hypothetical) solution of Fermat's equation
The curve is named after Gerhard Frey and (sometimes) .
History
came up with the idea of associating solutions of Fermat's equation with a completely different mathematical ... |
https://en.wikipedia.org/wiki/Auroral%20chorus | An auroral chorus is a series of electromagnetic waves at frequencies which resemble chirps, whistles, and quasi-musical sounds in predominantly rising tones when played as pressure waves (sound), which are created by geomagnetic storms also responsible for the auroras. The sounds last approximately 0.1 to 1.0 seconds... |
https://en.wikipedia.org/wiki/Python%20syntax%20and%20semantics | The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some definite differences between the languages. It su... |
https://en.wikipedia.org/wiki/Perilipin-1 | Perilipin, also known as lipid droplet-associated protein, perilipin 1, or PLIN, is a protein that, in humans, is encoded by the PLIN gene. The perilipins are a family of proteins that associate with the surface of lipid droplets. Phosphorylation of perilipin is essential for the mobilization of fats in adipose tissue... |
https://en.wikipedia.org/wiki/Autocorrelator | A real time interferometric autocorrelator is an electronic tool used to examine the autocorrelation of, among other things, optical beam intensity and spectral components through examination of variable beam path differences. See Optical autocorrelation.
Description
In an interferometric autocorrelator, the input bea... |
https://en.wikipedia.org/wiki/Heat%20of%20formation%20group%20additivity | Heat of formation group additivity methods in thermochemistry enable the calculation and prediction of heat of formation of organic compounds based on additivity. This method was pioneered by S. W. Benson.
Benson model
Starting with simple linear and branched alkanes and alkenes the method works by collecting a larg... |
https://en.wikipedia.org/wiki/Test%20bench | A test bench or testing workbench is an environment used to verify the correctness or soundness of a design or model.
The term has its roots in the testing of electronic devices, where an engineer would sit at a lab bench with tools for measurement and manipulation, such as oscilloscopes, multimeters, soldering irons,... |
https://en.wikipedia.org/wiki/Enantiostasis | Enantiostasis is the ability of an open system, especially a living organism, to maintain and conserve its metabolic and physiological functions in response to variations in an unstable environment. Estuarine organisms typically undergo enantiostasis in order to survive with constantly changing salt concentrations. The... |
https://en.wikipedia.org/wiki/Bagoong%20monamon | Bagoong monamon, bagoong monamon-dilis, or simply bagoong and bugguong munamon in Ilocano, is a common ingredient used in the Philippines and particularly in Northern Ilocano cuisine. It is made by fermenting salted anchovies ("monamon" or "munamon" in Ilocano) which is not designed, nor customarily used for immediate ... |
https://en.wikipedia.org/wiki/KGCW | KGCW (channel 26) is a television station licensed to Burlington, Iowa, United States, serving as the CW network outlet for the Quad Cities area. It is owned and operated by network majority owner Nexstar Media Group alongside regional CBS affiliate WHBF-TV (channel 4). Nexstar also provides certain services to Fox aff... |
https://en.wikipedia.org/wiki/Flail%20limb | A flail limb (also flail arm or flail leg) is a medical term which refers to an extremity in which the primary nerve has been severed or ceased to function, resulting in complete lack of mobility and sensation. Although blood typically continues to flow through the limb, it is completely useless and potential for surg... |
https://en.wikipedia.org/wiki/Job%20control%20%28Unix%29 | In Unix and Unix-like operating systems, job control refers to control of jobs by a shell, especially interactively, where a "job" is a shell's representation for a process group. Basic job control features are the suspending, resuming, or terminating of all processes in the job/process group; more advanced features ca... |
https://en.wikipedia.org/wiki/Jog%20dial | A jog dial, jog wheel, shuttle dial, or shuttle wheel is a type of knob, ring, wheel, or dial which allows the user to shuttle or jog through audio or video media. It is commonly found on models of CD players which are made for disc jockeys, and on professional video equipment such as video tape recorders. More recen... |
https://en.wikipedia.org/wiki/Electromagnetic%20field%20solver | Electromagnetic field solvers (or sometimes just field solvers) are specialized programs that solve (a subset of) Maxwell's equations directly. They form a part of the field of electronic design automation, or EDA, and are commonly used in the design of integrated circuits and printed circuit boards. They are used when... |
https://en.wikipedia.org/wiki/GDAL | The Geospatial Data Abstraction Library (GDAL) is a computer software library for reading and writing raster and vector geospatial data formats (e.g. shapefile), and is released under the permissive X/MIT style free software license by the Open Source Geospatial Foundation. As a library, it presents a single abstract d... |
https://en.wikipedia.org/wiki/Martingale%20pricing | Martingale pricing is a pricing approach based on the notions of martingale and risk neutrality. The martingale pricing approach is a cornerstone of modern quantitative finance and can be applied to a variety of derivatives contracts, e.g. options, futures, interest rate derivatives, credit derivatives, etc.
In contra... |
https://en.wikipedia.org/wiki/Family%20Constellations | Family Constellations, also known as Systemic Constellations and Systemic Family Constellations, is a pseudoscientific therapeutic method which draws on elements of family systems therapy, existential phenomenology and isiZulu beliefs and attitudes to family. In a single session, a Family Constellation attempts to reve... |
https://en.wikipedia.org/wiki/Direct%20coupling | In electronics, direct coupling or DC coupling (also called conductive coupling and galvanic coupling) is the transfer of electrical energy by means of physical contact via a conductive medium, in contrast to inductive coupling and capacitive coupling. It is a way of interconnecting two circuits such that, in addition ... |
https://en.wikipedia.org/wiki/Lucy%E2%80%93Hook%20coaddition%20method | The Lucy–Hook coaddition method is an image processing technique for combining sub-stepped astronomical image data onto a finer grid. The method allows the option of resolution and contrast enhancement or the choice of a conservative, re-convolved, output.
Tests with very deep Hubble Space Telescope Wide Field and Pla... |
https://en.wikipedia.org/wiki/Ventral%20supraoptic%20decussation | The ventral supraoptic decussation is the crossover (decussation) point for signals from the left and right eye, en route respectively to the right and left sides of the visual cortex.
Occupying the posterior part of the commissure of the optic chiasma is a strand of fibers, the Ventral supraoptic decussation (commiss... |
https://en.wikipedia.org/wiki/Drizzle%20%28image%20processing%29 | Drizzle (or DRIZZLE) is a digital image processing method for the linear reconstruction of undersampled images. The method is normally used for the combination of astronomical images and was originally developed for the Hubble Deep Field observations made by the Hubble Space Telescope. The algorithm, known as variable-... |
https://en.wikipedia.org/wiki/Diaphragma%20sellae | The diaphragma sellae or sellar diaphragm is a small, circular sheet of dura mater forming an (incomplete) roof over the sella turcica and covering the pituitary gland lodged therein. The diaphragma sellae forms a central opening to accommodate the passage of the pituitary stalk (infundibulum) which interconnects the p... |
https://en.wikipedia.org/wiki/Information%20algebra | The term "information algebra" refers to mathematical techniques of information processing. Classical information theory goes back to Claude Shannon. It is a theory of information transmission, looking at communication and storage. However, it has not been considered so far that information comes from different sources... |
https://en.wikipedia.org/wiki/FCER1 | The high-affinity IgE receptor, also known as FcεRI, or Fc epsilon RI, is the high-affinity receptor for the Fc region of immunoglobulin E (IgE), an antibody isotype involved in the allergy disorder and parasites immunity. FcεRI is a tetrameric receptor complex that binds Fc portion of the ε heavy chain of IgE. It cons... |
https://en.wikipedia.org/wiki/Animal%20geography | Animal geography is a subfield of the nature–society/human–environment branch of geography as well as a part of the larger, interdisciplinary umbrella of human–animal studies (HAS). Animal geography is defined as the study of "the complex entanglings of human–animal relations with space, place, location, environment an... |
https://en.wikipedia.org/wiki/Taenia%20thalami | In the front, superior surface of the thalamus but separate from the inner, medial surface by a salient margin is the taenia thalami (Latin for "flat band" of the thalamus). The bottom epithelial lining of the third ventricle is in between the tela choroidea and the taenia thalami. |
https://en.wikipedia.org/wiki/Optic%20recess | At the junction of the floor and anterior wall of the third ventricle, immediately above the optic chiasma, the ventricle presents a small angular recess or diverticulum, the optic recess (or supraoptic recess).
Additional images |
https://en.wikipedia.org/wiki/Flux%20qubit | In quantum computing, more specifically in superconducting quantum computing, flux qubits (also known as persistent current qubits) are micrometer sized loops of superconducting metal that is interrupted by a number of Josephson junctions. These devices function as quantum bits. The flux qubit was first proposed by Ter... |
https://en.wikipedia.org/wiki/Posterior%20perforated%20substance | The posterior perforated substance is a layer of gray matter which is pierced by small apertures for the transmission of blood vessels. Its inferior part lies on the ventral aspect of the medial portions of the tegmenta and contains the interpeduncular nucleus; its superior part forms part of the floor of the third ven... |
https://en.wikipedia.org/wiki/Interpeduncular%20fossa | The interpeduncular fossa is a deep depression of the ventral surface of the midbrain between the two crura cerebri.
It has been found in humans and macaques, but not in rats or mice, showing that this is a relatively new evolutionary region.
Anatomy
The interpeduncular fossa is a somewhat rhomboid-shaped area of th... |
https://en.wikipedia.org/wiki/TransPAC2 | The TransPAC2 Network was a US National Science Foundation-funded high-speed international computer network circuit connecting national research and education networks in the Asia-Pacific region to those in the US. It was the continuation of the TransPAC project which ran from 2000 through 2005.
History
The first Tr... |
https://en.wikipedia.org/wiki/Olivocerebellar%20tract | The olivocerebellar tract, also known as olivocerebellar fibers, are neural fibers which originate at the olivary nucleus and pass out through the hilum and decussate with those from the opposite olive in the raphe nucleus, then as internal arcuate fibers they pass partly through and partly around the opposite olive an... |
https://en.wikipedia.org/wiki/Beta%20plane | In geophysical fluid dynamics, an approximation whereby the Coriolis parameter, f, is set to vary linearly in space is called a beta plane approximation.
On a rotating sphere such as the Earth, f varies with the sine of latitude; in the so-called f-plane approximation, this variation is ignored, and a value of f appro... |
https://en.wikipedia.org/wiki/Sublingual%20nucleus | In the substance of the formatio reticularis are two small nuclei of gray matter. The one near the dorsal aspect of the hilus of the inferior olivary nucleus is called the Sublingual nucleus (inferior central nucleus, nucleus of Roller.) |
https://en.wikipedia.org/wiki/Solitary%20tract | The solitary tract (tractus solitarius, or fasciculus solitarius), is a compact fiber bundle that extends longitudinally through the posterolateral region of the medulla oblongata. The solitary tract is surrounded by the solitary nucleus, and descends to the upper cervical segments of the spinal cord. It was first nam... |
https://en.wikipedia.org/wiki/Hypothalamic%20sulcus | The hypothalamic sulcus (sulcus of Monro) is a groove in the lateral wall of the third ventricle, marking the boundary between the thalamus and hypothalamus. The upper and lower portions of the lateral wall of the third ventricle correspond to the alar lamina and basal lamina, respectively, of the lateral wall of the f... |
https://en.wikipedia.org/wiki/Bills%20of%20mortality | Bills of mortality were the weekly mortality statistics in London, designed to monitor burials from 1592 to 1595 and then continuously from 1603. The responsibility to produce the statistics was chartered in 1611 to the Worshipful Company of Parish Clerks. The bills covered an area that started to expand as London grew... |
https://en.wikipedia.org/wiki/Pulmonary%20wedge%20pressure | The pulmonary wedge pressure (PWP) (also called pulmonary arterial wedge pressure (PAWP), pulmonary capillary wedge pressure (PCWP), pulmonary artery occlusion pressure (PAOP), or cross-sectional pressure) is the pressure measured by wedging a pulmonary artery catheter with an inflated balloon into a small pulmonary ar... |
https://en.wikipedia.org/wiki/German%20Green%20Belt | The German Green Belt (Grünes Band Deutschland in German) is a project of Bund Naturschutz (BUND), one of Germany's largest environmental groups. The project began in 1989 facing the network of inner-German border fences and guard towers formerly separating East and West Germany. It is one of the world's most unusual ... |
https://en.wikipedia.org/wiki/RapLeaf | RapLeaf was a US-based marketing data and software company, which was acquired by email data provider TowerData in 2013.
Company
RapLeaf was founded in San Francisco by Auren Hoffman and Manish Shah in March 2005.
In May 2006 the Founders Fund led a seed round of about $1 million, including angel investors such as Pet... |
https://en.wikipedia.org/wiki/Diagonally%20dominant%20matrix | In mathematics, a square matrix is said to be diagonally dominant if, for every row of the matrix, the magnitude of the diagonal entry in a row is larger than or equal to the sum of the magnitudes of all the other (non-diagonal) entries in that row. More precisely, the matrix A is diagonally dominant if
where aij deno... |
https://en.wikipedia.org/wiki/Calabi%20conjecture | In the mathematical field of differential geometry, the Calabi conjecture was a conjecture about the existence of certain kinds of Riemannian metrics on certain complex manifolds, made by . It was proved by , who received the Fields Medal and Oswald Veblen Prize in part for his proof. His work, principally an analysis ... |
https://en.wikipedia.org/wiki/Pseudo-Zernike%20polynomials | In mathematics, pseudo-Zernike polynomials are well known and widely used in the analysis of optical systems. They are also widely used in image analysis as shape descriptors.
Definition
They are an orthogonal set of complex-valued polynomials
defined as
where and orthogonality on the unit disk is given as
where t... |
https://en.wikipedia.org/wiki/Virtual%20population%20analysis | Virtual population analysis (VPA) is a cohort modeling technique commonly used in fisheries science for reconstructing historical fish numbers at age using information on death of individuals each year. This death is usually partitioned into catch by fisheries and natural mortality. VPA is virtual in the sense that the... |
https://en.wikipedia.org/wiki/Otherness%20of%20childhood | The otherness of childhood describes the substantial differences between the lived worlds of children and adults, and the otherness of the former from the perspective of the latter. These differences are suggested to emerge from complex outcomes of divergent states of physical, neurological, emotional, affective and ex... |
https://en.wikipedia.org/wiki/Decay%20scheme | The decay scheme of a radioactive substance is a graphical presentation of all the transitions occurring in a decay, and of their relationships. Examples are shown below.
It is useful to think of the decay scheme as placed in a coordinate system, where the vertical axis is energy, increasing from bottom to top, and th... |
https://en.wikipedia.org/wiki/VoIP%20VPN | A VoIP VPN combines voice over IP and virtual private network technologies to offer a method for delivering secure voice. Because VoIP transmits digitized voice as a stream of data, the VoIP VPN solution accomplishes voice encryption quite simply, applying standard data-encryption mechanisms inherently available in the... |
https://en.wikipedia.org/wiki/Angstrom%20exponent | The Angstrom exponent or Ångström exponent is a parameter that describes how the optical thickness of an aerosol typically depends on the wavelength of the light.
Definition
In 1929, the Swedish physicist Anders K. Ångström found that the optical thickness of an aerosol depends on the wavelength of light according to ... |
https://en.wikipedia.org/wiki/Hofmeister%20series | The Hofmeister series or lyotropic series is a classification of ions in order of their lyotrophic properties, which is the ability to salt out or salt in proteins. The effects of these changes were first worked out by Franz Hofmeister, who studied the effects of cations and anions on the solubility of proteins.
Hofme... |
https://en.wikipedia.org/wiki/Defective%20by%20Design | Defective by Design (DBD) is a grassroots anti-digital rights management (DRM) initiative by the Free Software Foundation (FSF) and CivicActions. Launched in 2006, DBD believes that DRM (which they call "digital restrictions management") makes technology deliberately defective, negatively affects digital freedoms, and ... |
https://en.wikipedia.org/wiki/Nike%2BiPod | The Nike+iPod Sports Kit is an activity tracker device, developed by Nike, Inc., which measures and records the distance and pace of a walk or run. The Nike+iPod consists of a small transmitter device attached to or embedded in a shoe, which communicates with either the Nike+ Sportband, a receiver plugged into an iPod ... |
https://en.wikipedia.org/wiki/Fusiform | Fusiform means having a spindle-like shape that is wide in the middle and tapers at both ends. It is similar to the lemon-shape, but often implies a focal broadening of a structure that continues from one or both ends, such as an aneurysm on a blood vessel.
Examples
Fusiform, a body shape common to many aquatic anim... |
https://en.wikipedia.org/wiki/Collaborative%20Computational%20Project%20Number%204 | The Collaborative Computational Project Number 4 in protein crystallography (CCP4) was set up in 1979 in the United Kingdom to support collaboration between researchers working in software development and assemble a comprehensive collection of software for structural biology. The CCP4 core team is located at the Resear... |
https://en.wikipedia.org/wiki/Projection%20fiber | The projection fibers consist of efferent and afferent fibers uniting the cortex with the lower parts of the brain and with the spinal cord. In human neuroanatomy, bundles of axons (nerve fibers) called tracts, within the brain, can be categorized by their function into association fibers, projection fibers, and commis... |
https://en.wikipedia.org/wiki/CCP4%20%28file%20format%29 | The CCP4 file format is file generated by the Collaborative Computational Project Number 4 in 1979. The file format for electron density has become industry standard in X-ray crystallography and Cryo-electron microscopy where the result of the technique is a three-dimensional grid of voxels each with a value correspond... |
https://en.wikipedia.org/wiki/Commissural%20fiber | The commissural fibers or transverse fibers are axons that connect the two hemispheres of the brain. In contrast to commissural fibers, association fibers connect regions within the same hemisphere of the brain, and projection fibers connect each region to other parts of the brain or to the spinal cord.
Structure
The... |
https://en.wikipedia.org/wiki/Occipitofrontal%20fasciculus | The occipitofrontal fasciculus, also known as the fronto-occipital fasciculus, passes backward from the frontal lobe, along the lateral border of the caudate nucleus, and on the medial aspect of the corona radiata; its fibers radiate in a fan-like manner and pass into the occipital and temporal lobes lateral to the pos... |
https://en.wikipedia.org/wiki/Hickam%27s%20dictum | Hickam's dictum is a counterargument to the use of Occam's razor in the medical profession. While Occam's razor suggests that the simplest explanation is the most likely, implying in medicine that diagnosticians should assume a single cause for multiple symptoms, one form of Hickam's dictum states: "A man can have as m... |
https://en.wikipedia.org/wiki/VT1.5 | VT1.5 is a type of virtual tributary in SONET.
SONET bandwidth is defined in multiples of an OC-1/STS-1, each of which can transport up to 51.84 Mbit/s. However, it is frequently desirable to address much smaller portions of bandwidth. To meet this need, sub-STS-1 facilities called Virtual Tributaries have been defi... |
https://en.wikipedia.org/wiki/Simplex%20noise | Simplex noise is the result of an n-dimensional noise function comparable to Perlin noise ("classic" noise) but with fewer directional artifacts and, in higher dimensions, a lower computational overhead. Ken Perlin designed the algorithm in 2001 to address the limitations of his classic noise function, especially in h... |
https://en.wikipedia.org/wiki/Cauchy%27s%20functional%20equation | Cauchy's functional equation is the functional equation:
A function that solves this equation is called an additive function. Over the rational numbers, it can be shown using elementary algebra that there is a single family of solutions, namely for any rational constant Over the real numbers, the family of linear... |
https://en.wikipedia.org/wiki/Error%20hiding | In computer programming, error hiding (or error swallowing) is the practice of catching an error or exception, and then continuing without logging, processing, or reporting the error to other parts of the software. Handling errors in this manner is considered bad practice and an anti-pattern in computer programming. In... |
https://en.wikipedia.org/wiki/Collateral%20circulation | Collateral circulation is the alternate circulation around a blocked artery or vein via another path, such as nearby minor vessels. It may occur via preexisting vascular redundancy (analogous to engineered redundancy), as in the circle of Willis in the brain, or it may occur via new branches formed between adjacent blo... |
https://en.wikipedia.org/wiki/Comparison%20of%20open-source%20operating%20systems | These tables compare free software / open-source operating systems. Where not all of the versions support a feature, the first version which supports it is listed.
General information
Supported architectures
Supported hardware
General
Networking
Network technologies
Supported file systems
Supported file system ... |
https://en.wikipedia.org/wiki/Superior%20rectal%20artery | The superior rectal artery (superior hemorrhoidal artery) is an artery that descends into the pelvis to supply blood to the rectum.
Structure
The superior rectal artery is the continuation of the inferior mesenteric artery. It descends into the pelvis between the layers of the mesentery of the sigmoid colon, crossing... |
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