All articles starting with D
24,034 articles
Declaration to Triple Nuclear Energy
The Declaration to Triple Nuclear Energy is a political pledge launched at COP28 in Dubai in 2023 to triple global nuclear capacity from 2020 levels by 2050.
Declarations of war during World War II
Covering 164 formal situations, Declarations of War during World War II spanned 1939 to 1945, including the start in September and the undeclared attack on Pearl Harbor.
Declarative data pipelines
Declarative data pipelines define datasets and transformations as declared queries, letting engines like Spark Declarative Pipelines, Snowflake Dynamic Tables, dbt, and Lakeflow infer DAGs, scheduling, and incremental processing automatically.
Declarative programming
Declarative programming is a style of programming emphasizing what a program should accomplish over how it does so, spanning functional, logic, constraint, and query languages.
Declawing of crabs
Declawing of crabs: removing claws from live crabs (stone crab, Jonah crab, edible crab) and returning them to regenerate. Mortality 51-70%, regenerated claws only 3% of stone crab landings; banned only in some US states.
Declension
Declension: inflection of nouns, pronouns, and adjectives for case, number, and gender, contrasted with verbal conjugation. Covers Latin's five declensions, Slavic systems, English's loss of declension, syncretism, and the origins of case endings.
Declination
Declination, also called the declination angle, is the celestial equivalent of latitude, measuring an object's angular distance north or south of the celestial equator, from 0° to ±90°.
Decline and consolidation of the magazine industry
The decline and consolidation of the magazine industry is the downturn in print magazine publishing since the 2000s, as newsstand sales collapsed and advertising moved to digital platforms.
Decline and legacy of the telegraph
The decline of the telegraph was the century-long loss of telegram traffic to the telephone, telex, fax, and email, ending with Western Union's last telegram in 2006.
Decline and legacy of the telegraphist occupation
The telegraphist occupation peaked around 1900 with 90 million messages a year in Britain alone, then declined for over a century until the last Indian telegram closed in 2013.
Decline and transition from shellac records
The decline of shellac records began with Japan's 1942 occupation of lac-producing Southeast Asia; vinyl 33⅓ and 45 rpm discs had replaced 78s in America by 1960.
Decline curve analysis
Decline curve analysis fits empirical decline models, chiefly the Arps equations, to a well's production rate history to forecast future output and estimate recoverable reserves, including in shale reservoirs.
Decline in amphibian populations
Decline in amphibian populations: worldwide drop in frog, salamander, and caecilian numbers since the late 1950s, driven by habitat loss, chytridiomycosis (Bd, Bsal), and climate change; 40.7% of species threatened.
Decline of Aksum
The decline of Aksum was the gradual weakening of the Aksumite kingdom in Ethiopia and Eritrea from the late sixth century, as Red Sea trade was lost.
Decline of anarchism between the world wars
The decline of anarchism between the world wars was the marginalization of the anarchist movement from 1923 to 1939 under repression, though Spain's CNT grew past one million members.
Decline of Detroit
Decline of Detroit: the Motor City's fall from 1,849,600 residents in 1950 to about 633,000, driven by deindustrialization, suburban flight, and the 2013 $18 billion bankruptcy, with tentative stabilization since.
Decline of Great Zimbabwe
The decline of Great Zimbabwe was the loss of wealth, trade, and political power of the stone-built capital near modern Masvingo, Zimbabwe, ending in the site's abandonment.
Decline of newspapers
The decline of newspapers, also known as the newspaper crisis, is the sustained fall in circulation, advertising revenue, and jobs that has closed more than 3,200 US papers since 2005.
Decline of Spain
Decline of Spain: the seventeenth-century loss of Spanish great-power pre-eminence, also debated as a historical myth (Kamen) and tied to the Black Legend, silver inflows, fiscal crisis, and Castilian depopulation.
Decline of the Bactria-Margiana Archaeological Complex
The decline of the Bactria-Margiana Archaeological Complex (BMAC) was the end of the Oxus Civilization in southern Central Asia, with settlements abandoned by 1700 BC, attributed to environmental deterioration and steppe contact.
Decline of the Indus civilization
The decline of the Indus civilization, also called the Harappan civilization, was the end of Mature Harappan urbanism after about 1900 BC, when its cities were abandoned.
Decline of the Mughal Empire
The decline of the Mughal Empire: the loss of central Mughal authority in India after Aurangzeb's death in 1707, ending formally in 1857. Covers successor states, jagirdari and agrarian crises, and rival historiographical explanations.
Decline of the Satavahana dynasty
The decline of the Satavahana dynasty (सातवाहन साम्राज्य का विघटन) was the disintegration of the Satavahana state in the Deccan, whose provinces were lost to the Ikshvakus, Abhiras, and Pallavas.
Declining balance method
The declining balance method is a depreciation technique that applies a fixed rate each year to an asset's remaining book value, producing larger early expenses and smaller later ones.
Declustering (statistics)
Declustering is a family of spatial statistics methods that reweight or subsample clustered data so estimates are less biased by preferential sampling, where some areas are oversampled.
Deco
Deco (Anderson Luis de Souza, born 1977, São Bernardo do Campo) is a Brazilian-born Portuguese former midfielder who won the Champions League with Porto and Barcelona, earned 75 Portugal caps, and became FC Barcelona's sporting director in August 2023.
Deco*27
Deco*27 (デコ・ニーナ), born 1986 in Fukuoka, is a leading Japanese Vocaloid producer who debuted on Nico Nico Douga in October 2008 and writes for Hatsune Miku; known for Ai Kotoba, Ghost Rule, Vampire, and Monitoring, he runs the company OTOIRO and projects such as MILGRAM and holo*27.
Decoction (extraction)
Decoction is a method of extracting water-soluble, heat-stable constituents from plant material by boiling it in water, suited to tough roots, barks, and seeds and dominant in traditional Chinese medicine.
Decode-and-forward relaying
Decode-and-forward relaying (DF) is a cooperative communication protocol in which an intermediate relay decodes the source's signal, re-encodes it, and forwards it, remaining silent if decoding fails.
Decoded (解密) (film)
Decoded (解密) is a 2024 Chinese drama film directed by Chen Sicheng, adapted from Mai Jia's novel, starring Liu Haoran and John Cusack as codebreaker Rong Jinzhen and his teacher, released 3 August 2024.