Random Articles (Page 4)
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๐ Antโfungus mutualism
Antโfungus mutualism is a symbiosis seen in certain ant and fungal species, in which ants actively cultivate fungus much like humans farm crops as a food source. In some species, the ants and fungi are dependent on each other for survival. The leafcutter ant is a well-known example of this symbiosis. A mutualism with fungi is also noted in some species of termites in Africa.
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- "Antโfungus mutualism" | 2017-02-23 | 45 Upvotes 1 Comments
๐ Compute Express Link
Compute Express Link (CXL) is an open standard for high-speed central processing unit (CPU)-to-device and CPU-to-memory connections, designed for high performance data center computers. CXL is built on the PCI Express (PCIe) physical and electrical interface and includes PCIe-based block input/output protocol (CXL.io) and new cache-coherent protocols for accessing system memory (CXL.cache) and device memory (CXL.mem).
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- "Compute Express Link" | 2022-07-20 | 25 Upvotes 4 Comments
๐ Teasmade
A teasmade is a machine for making tea automatically, which was once common in the United Kingdom and some British Commonwealth countries. Teasmades generally include an analogue alarm clock and are designed to be used at the bedside, to ensure tea is ready first thing in the morning. Although crude versions existed in Victorian times, they only became practical with the availability of electric versions in the 1930s. They reached their peak in popularity in the 1960s and 1970s, since when their use has declined, but they are now enjoying a revival, partly as a retro novelty item.
The name teasmade is an example of a genericised trademark, now commonly used to refer to any automatic tea-making appliance.
๐ WWII: Failed novelist becomes a spy for Germany, makes up a fake spy network
Juan Pujol Garcรญa (Spanish: [หxwan puหสol ษฃaษพหฮธi.a]; 14 February 1912 โ 10 October 1988), also known as Joan Pujol i Garcรญa (Catalan: [สuหan puหสษl i ษฃษษพหsi.ษ]), was a Spanish spy who acted as a double agent loyal to Great Britain against Nazi Germany during World War II, when he relocated to Britain to carry out fictitious spying activities for the Germans. He was given the codename Garbo by the British; their German counterparts codenamed him Alaric and referred to his non-existent spy network as "Arabal".
After developing a loathing of political extremism of all sorts during the Spanish Civil War, Pujol decided to become a spy for Britain as a way to do something "for the good of humanity". Pujol and his wife contacted the British Embassy in Madrid, which rejected his offer.
Undeterred, he created a false identity as a fanatically pro-Nazi Spanish government official and successfully became a German agent. He was instructed to travel to Britain and recruit additional agents; instead he moved to Lisbon and created bogus reports about Britain from a variety of public sources, including a tourist guide to Britain, train timetables, cinema newsreels and magazine advertisements.
Although the information would not have withstood close examination, Pujol soon established himself as a trustworthy agent. He began inventing fictitious sub-agents who could be blamed for false information and mistakes. The Allies finally accepted Pujol when the Germans expended considerable resources attempting to hunt down a fictitious convoy. Following interviews by Desmond Bristow of Section V MI6 Iberian Section, Juan Pujol was taken on. The family were moved to Britain and Pujol was given the code name "Garbo". Pujol and his handler Tomรกs Harris spent the rest of the war expanding the fictitious network, communicating to the German handlers at first by letters and later by radio. Eventually the Germans were funding a network of 27 agents, all fictitious.
Pujol had a key role in the success of Operation Fortitude, the deception operation intended to mislead the Germans about the timing, location and scale of the invasion of Normandy in 1944. The false information Pujol supplied helped persuade the Germans that the main attack would be in the Pas de Calais, so that they kept large forces there before and even after the invasion. Pujol had the distinction of receiving military decorations from both sides of the warย โ being awarded the Iron Cross and becoming a Member of the Order of the British Empire.
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- "WWII: Failed novelist becomes a spy for Germany, makes up a fake spy network" | 2024-03-08 | 79 Upvotes 41 Comments
๐ Hรผgelkultur
Hรผgelkultur (German pronunciation: [หhyหษกlฬฉkสlหtuหษฬฏ]), literally mound bed or mound culture, is a horticultural technique where a mound constructed from decaying wood debris and other compostable biomass plant materials is later (or immediately) planted as a raised bed. Considered a permaculture practice, advocates claim that the technique helps to improve soil fertility, water retention, and soil warming, thus benefitting plants grown on or near such mounds.
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- "Hรผgelkultur" | 2024-04-13 | 30 Upvotes 8 Comments
๐ Judas goat
A Judas goat is a trained goat used in general animal herding. The Judas goat is trained to associate with sheep or cattle, leading them to a specific destination. In stockyards, a Judas goat will lead sheep to slaughter, while its own life is spared. Judas goats are also used to lead other animals to specific pens and onto trucks. They have fallen out of use in recent times, but can still be found in various smaller slaughterhouses in some parts of the world, as well as conservation projects.
Cattle herders may use a Judas steer to serve the same purpose as a Judas goat. The technique, and the term, originated from cattle drives in the United States in the 1800s.
The term is a reference to Judas Iscariot, an apostle of Jesus Christ who betrayed Jesus in the Bible.
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- "Judas goat" | 2023-10-25 | 211 Upvotes 141 Comments
๐ Parrondo's paradox
Parrondo's paradox, a paradox in game theory, has been described as: A combination of losing strategies becomes a winning strategy. It is named after its creator, Juan Parrondo, who discovered the paradox in 1996. A more explanatory description is:
- There exist pairs of games, each with a higher probability of losing than winning, for which it is possible to construct a winning strategy by playing the games alternately.
Parrondo devised the paradox in connection with his analysis of the Brownian ratchet, a thought experiment about a machine that can purportedly extract energy from random heat motions popularized by physicist Richard Feynman. However, the paradox disappears when rigorously analyzed. Winning strategies consisting of a combinations of losing strategies have been explored in biology before Parrondo's paradox was published. More recently, problems in evolutionary biology and ecology have been modeled and explained in terms of the paradox.
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- "Parrondo's Paradox" | 2023-04-28 | 69 Upvotes 48 Comments
- "Parrondo's paradox" | 2011-11-16 | 41 Upvotes 7 Comments
- "Parrondo's paradox: A losing strategy that wins" | 2010-06-01 | 43 Upvotes 12 Comments
๐ Add oil
"Add oil" is a Hong Kong English expression used as an encouragement and support to a person. Derived from the Chinese phrase Gayau (or Jiayou; Chinese: ๅ ๆฒน), the expression is literally translated from the Cantonese phrase. It is originated in Hong Kong and is commonly used by bilingual Hong Kong speakers.
"Add oil" can be roughly translated as "Go for it". Though it is often described as "the hardest to translate well", the literal translation is the result of Chinglish and was added to the Oxford English Dictionary in 2018.
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- "Add oil" | 2023-12-05 | 64 Upvotes 28 Comments
๐ Hostile Architecture
Hostile architecture is an intentional design strategy that uses elements of the built environment to guide or restrict behaviour in urban space as a form of crime prevention or order maintenance. It often targets people who use or rely on public space more than others, like people who are homeless and youth, by restricting the behaviours they engage in. Also known as defensive architecture, hostile design, unpleasant design, exclusionary design, or defensive urban design, hostile architecture is most typically associated with "anti-homeless spikes" โ studs embedded in flat surfaces to make sleeping rough, uncomfortable, and impractical. Other measures include sloped window sills to stop people sitting, benches with armrests positioned to stop people lying on them, and water sprinklers that "intermittently come on but aren't really watering anything." Hostile architecture also seeks to deter skateboarding, littering, loitering, and public urination. Critics argue that such measures reinforce social divisions and create problems for all members of the public, especially seniors, people with disabilities, and children.
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- "Hostile Architecture" | 2019-08-06 | 104 Upvotes 112 Comments