All articles A–Z
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Determinantal point process
A determinantal point process is a random point process whose points repel each other, used in machine learning for selecting diverse subsets and in spatial statistics.
Determination of equilibrium constants
Determination of equilibrium constants is the set of thermodynamic definitions, experimental methods, and data-evaluation procedures used to assign numerical values to the equilibrium constant of a chemical reaction.
Determination of the day of the week
Determination of the day of the week is the problem of computing the weekday of any calendar date, solved by algorithms from Gauss's 1800 method to Conway's doomsday rule.
Determination of the structure of sodium chloride
The determination of the structure of sodium chloride was the first crystal structure solved by X-ray diffraction; W. L. Bragg published it in 1913, showing that solid salt contains ions rather than molecules.
Determiner
Determiners are noun-phrase-initial words (the, a, this, my, some) marking definiteness, possession, quantity, and number. Key facts: DP hypothesis head status, specific vs general classes, obligatoriness with singular count nouns, grammaticalization history in English and French.
Determining the number of clusters in a data set
Determining the number of clusters in a data set is the problem of choosing how many groups a cluster analysis should produce, guided by indices like the silhouette.
Determinism
Determinism is the thesis that the state of the world and the laws of nature fix a unique future. Distinguished from fatalism and predictability; shaped by Laplace, chaos theory, quantum mechanics, and the free will debate.
Deterministic algorithm
A deterministic algorithm is an algorithm that, given the same inputs, always produces the same outputs on every run, making its behavior completely predictable from the input alone.
Deterministic finite automaton
A deterministic finite automaton, also called a deterministic finite state machine, is a finite-state machine that reads input one symbol at a time and recognizes exactly the regular languages.
Deterministic policy gradient
The deterministic policy gradient (DPG) is a reinforcement-learning gradient for deterministic policies, proved model-free by Silver et al. in 2014 and the basis of DDPG and TD3.
Deterministic simulation
A deterministic simulation is a computational model in which every input is fixed and non-random, so repeated runs with the same inputs give identical outputs.
Deterministic transfer technique for van der Waals assembly
Deterministic transfer is a family of techniques for picking up individual 2D material flakes and placing them at chosen locations and orientations, building van der Waals heterostructures layer by layer with high yield and cleanliness.
Deterrence theory
Deterrence theory explains how threats of retaliation prevent attack, requiring capability, commitment, and communication. Associated with Thomas Schelling and nuclear strategy, it spans deterrence versus compellence, extended deterrence, cyber deterrence, and criminological deterrence research.
Detgiz
Detgiz was the Soviet state publishing house for children's and youth literature, founded in 1933 with Marshak as editor; in 1956 it issued 70% of Soviet children's books.
Dethklok
Dethklok: fictional death metal band of Adult Swim's Metalocalypse (premiered 2006) and a real touring melodic death metal act led by Brendon Small with drummer Gene Hoglan; five Dethalbums released 2007-2023, including Dethalbum IV with the Army of the Doomstar film.
Detlef
Detlef is the stage name of Alexandros Georgiadis, a Greek tech-house DJ and producer whose 2017 single "Swagon" hit number one on Beatport, and who holds a residency at Jamie Jones' Paradise parties in Ibiza.
Detlef Hofmann
Detlef Hofmann (born 1963, Karlsruhe) is a German sprint canoe coach and retired kayaker, Olympic K4 1000 m gold medalist at Atlanta 1996, a multiple K4 world champion, banned two years for testosterone before Barcelona 1992, later DKV Bundestrainer.
Detlef Lohse
Detlef Lohse, born in 1963 in Hamburg, Germany, is a German physicist who holds the Chair of Physics of Fluids at the University of Twente, known for turbulence and sonoluminescence.
Detlef P. van Vuuren
Detlef P. van Vuuren, also known as Detlef van Vuuren, is a Dutch climate scientist who led development of the RCP and SSP scenarios used in IPCC assessments.
Detlef Schlöndorff
Detlef Schlöndorff (1942–2019) was a German-born nephrologist known for research on chemokines and inflammatory kidney disease, and editor-in-chief of Kidney International from 2012 to 2017.
Detlef Schrempf
Detlef Schrempf, German NBA forward (born 1963), 16 seasons with Dallas, Indiana, Seattle, and Portland; 3x All-Star, 2x Sixth Man of the Year, 1996 NBA Finals with the SuperSonics.
Detlef Schuppan
Detlef Schuppan, born 1954, is a German physician-scientist known for identifying tissue transglutaminase as the celiac autoantigen and developing the first TG2 inhibitor in trials.
Detlef Weigel
Detlef Weigel, born 1961 in Germany, is a plant biologist directing the Max Planck Institute for Biology Tübingen, known for LEAFY, FT, and the 1001 Genomes Project.
Detlev Arendt
Detlev Arendt is a German evolutionary biologist and molecular neurobiologist who leads a group at EMBL Heidelberg, known for reconstructing the nervous system of the last common ancestor of bilaterian animals.
Detlev Bronk
Detlev Wulf Bronk (1897–1975) was an American biophysicist who recorded electrical activity in single motor nerve fibers and served as president of Johns Hopkins and Rockefeller University.
Detlev Buchholz
Detlev Buchholz is a mathematical physicist known for rigorous, model-independent results in algebraic quantum field theory, including the Buchholz–Wichmann nuclearity condition, massless scattering theory, and particle weights.
Detlev Kittstein
Detlev Kittstein (Detty, 1944-1996), German field hockey forward; 68 caps for West Germany, Olympic gold at Munich 1972, fourth at Mexico City 1968, 1970 European champion, SC Frankfurt 1880 player and Frankfurt-Höchst coach.
Detlev von Liliencron
Detlev von Liliencron, born Friedrich Freiherr von Liliencron, was a German lyric poet whose impressionist verse made him one of Germany's most celebrated voices in the 1890s.
Dětmarovice Power Station
The Dětmarovice Power Station (Elektrárna Dětmarovice) is a power and heating plant in Dětmarovice in the Czech Republic's Moravian-Silesian Region, built between 1971 and 1976.
Detonating cord
Detonating cord, also called detcord or primacord, is a flexible explosive cord, usually with a PETN core, used to initiate other high explosives in blasting.