Random Articles (Page 4)
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π Rubber duck debugging
Discussed on
- "Rubber duck debugging" | 2014-06-13 | 11 Upvotes 8 Comments
- "Rubber duck debugging" | 2013-02-19 | 36 Upvotes 17 Comments
π Houdini of FL: autistic savant sentenced for taking tools he inherited
Mark DeFriest (born August 18, 1960), known as the Houdini of Florida, is an American man known for his repeated escapes from prison, having successfully done so 7 times. Born in rural Florida, he was arrested for the first time in 1978, serving for a year. In 1980, DeFriest was sentenced to four years in prison for violating probation via illegal firearms possession, having initially been arrested for retrieving work tools that his recently deceased father had willed him before the will had completed probate. His sentence has since been repeatedly extended for having attempted to escape 13 times (including one count of armed robbery during one attempt), as well as collecting hundreds of disciplinary reports for minor infractions, leading to a cumulative stay of 34 years in prison.
DeFriest has cumulatively spent 27 years in solitary confinement. Following publicity, DeFriest was granted parole and released on 5 February 2019. Ten days later, he was rearrested as he checked into a mental health facility.
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- "Houdini of FL: autistic savant sentenced for taking tools he inherited" | 2025-07-21 | 32 Upvotes 6 Comments
π Solanine
Solanine is a glycoalkaloid poison found in species of the nightshade family within the genus Solanum, such as the potato (Solanum tuberosum), the tomato (Solanum lycopersicum), and the eggplant (Solanum melongena). It can occur naturally in any part of the plant, including the leaves, fruit, and tubers. Solanine has pesticidal properties, and it is one of the plant's natural defenses. Solanine was first isolated in 1820 from the berries of the European black nightshade (Solanum nigrum), after which it was named. It belongs to the chemical family of saponins.
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- "Solanine" | 2024-11-12 | 10 Upvotes 2 Comments
π Turin Papyrus Map
The Turin Papyrus Map is an ancient Egyptian map, generally considered the oldest surviving map of topographical interest from the ancient world. It is drawn on a papyrus reportedly discovered at Deir el-Medina in Thebes, collected by Bernardino Drovetti (known as Napoleon's Proconsul) in Egypt sometime before 1824 AD and now preserved in Turin's Museo Egizio. The map was drawn about 1150 BC by the well-known Scribe-of-the-Tomb Amennakhte, son of Ipuy. It was prepared for Ramesses IV's quarrying expedition to the Wadi Hammamat in the Eastern Desert, which exposes Precambrian rocks of the Arabian-Nubian Shield. The purpose of the expedition was to obtain blocks of bekhen-stone (metagraywacke sandstone) to be used for statues of the king.
π Revenge Bedtime Procrastination
Bedtime procrastination or revenge bedtime procrastination is a psychological phenomenon in which people stay up later than they desire in an attempt to have control over the night because they perceive themselves (perhaps subconsciously) to lack influence over events during the day.
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- "Revenge Bedtime Procrastination" | 2021-09-18 | 57 Upvotes 11 Comments
π Basil Zaharoff
Sir Basil Zaharoff, GCB, GBE, born Vasileios Zacharias (Greek: ΞΞ±ΟΞ―Ξ»Ξ΅ΞΉΞΏΟ ZΞ±ΟΞ±ΟΞ―Ξ±Ο ΞΞ±ΟΞ¬ΟΟΟ; October 6, 1849 β November 27, 1936), was a Greek arms dealer and industrialist. One of the richest men in the world during his lifetime, Zaharoff was described as a "merchant of death" and "mystery man of Europe". His success was forged through his cunning, often aggressive and sharp, business tactics. These included the sale of arms to opposing sides in conflicts, sometimes delivering fake or faulty machinery and skilfully using the press to attack business rivals.
Zaharoff maintained close contacts with many powerful political leaders, including British Prime Minister David Lloyd George, Greek Prime Minister Eleftherios Venizelos and Ottoman Sultan Abdul Hamid II; he served as a primary inspiration for Ian Fleming's fictional James Bond villain Ernst Stavro Blofeld.
Discussed on
- "Basil Zaharoff" | 2014-06-22 | 30 Upvotes 9 Comments
π Anton (computer)
Anton is a massively parallel supercomputer designed and built by D. E. Shaw Research in New York, first running in 2008. It is a special-purpose system for molecular dynamics (MD) simulations of proteins and other biological macromolecules. An Anton machine consists of a substantial number of application-specific integrated circuits (ASICs), interconnected by a specialized high-speed, three-dimensional torus network.
Unlike earlier special-purpose systems for MD simulations, such as MDGRAPE-3 developed by RIKEN in Japan, Anton runs its computations entirely on specialized ASICs, instead of dividing the computation between specialized ASICs and general-purpose host processors.
Each Anton ASIC contains two computational subsystems. Most of the calculation of electrostatic and van der Waals forces is performed by the high-throughput interaction subsystem (HTIS). This subsystem contains 32 deeply pipelined modules running at 800Β MHz arranged much like a systolic array. The remaining calculations, including the bond forces and the fast Fourier transforms (used for long-range electrostatics), are performed by the flexible subsystem. This subsystem contains four general-purpose Tensilica cores (each with cache and scratchpad memory) and eight specialized but programmable SIMD cores called geometry cores. The flexible subsystem runs at 400Β MHz.
Anton's network is a 3D torus and thus each chip has 6 inter-node links with a total in+out bandwidth of 607.2 Gbit/s. An inter-node link is composed of two equal one-way links (one traveling in each direction), with each one-way link having 50.6 Gbit/s of bandwidth. Each one-way link is composed of 11 lanes, where a lane is a differential pair of wires signaling at 4.6 Gbit/s. The per-hop latency in Anton's network is 50Β ns. Each ASIC is also attached to its own DRAM bank, enabling large simulations.
The performance of a 512-node Anton machine is over 17,000 nanoseconds of simulated time per day for a protein-water system consisting of 23,558 atoms. In comparison, MD codes running on general-purpose parallel computers with hundreds or thousands of processor cores achieve simulation rates of up to a few hundred nanoseconds per day on the same chemical system. The first 512-node Anton machine became operational in October 2008. The multiple petaFLOP, distributed-computing project Folding@home has achieved similar aggregate ensemble simulation timescales, comparable to the total time of a single continuous simulation on Anton, specifically achieving the 1.5-millisecond range in January 2010.
The Anton supercomputer is named after Anton van Leeuwenhoek, who is often referred to as "the father of microscopy" because he built high-precision optical instruments and used them to visualize a wide variety of organisms and cell types for the first time.
The ANTON 2 machine with four 512 nodes and substantially increased speed and problem size has been described.
The National Institutes of Health have supported an ANTON for the biomedical research community at the Pittsburgh Supercomputing Center, Carnegie-Mellon University, and recently approved support of an ANTON 2 there.
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- "Anton (Computer)" | 2020-04-08 | 91 Upvotes 45 Comments
- "Anton (computer)" | 2015-11-26 | 54 Upvotes 9 Comments
π Rolling Highway
In rail transportation, a rolling highway or rolling road is a form of combined transport involving the conveying of road trucks by rail, referred to as Ro-La trains. The concept is a form of piggyback transportation.
The technical challenges to implement rolling highways vary from region to region. In North America, the loading gauge is often high enough to accommodate double stack containers, so the height of a semi-trailer on a flatcar is no issue. However, in Europe, except for purpose built lines such as the Channel Tunnel or the Gotthard Base Tunnel, the loading gauge height is much smaller, and it is necessary to transport the trailers with the tires about 30Β cm (11.81Β in) above the rails, so the trailers cannot be simply parked on the surface of a flat car above the wagon wheels or bogies. Making the wagon wheels smaller limits the maximum speed, so many designs allow the trailer to be transported with its wheels lower than the rail wagon wheels. An early approach in France was the Kangourou wagon with modified trailers. This technology did not survive, due to the market resistance to modified trailers. Today, three designs for these special wagons are in commercial service, "Modalohr", "CargoBeamer" and "Niederflurwagen" .
During a rolling-highway journey, if the drivers accompany the trailer, they are accommodated in a passenger car or a sleeping car. At both ends of the rail link there are purpose-built terminals that allow the train to be easily loaded and unloaded.
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- "Rolling Highway" | 2025-05-13 | 55 Upvotes 40 Comments
π Gold (1934 Film)
Gold is a 1934 German science fiction film directed by Karl Hartl. The film involves a British scientist who is attempting to create a device that turns base materials into gold. He later forces the German scientist's assistant Werner Holk (Hans Albers), who was working on a similar experiment, to come to his underwater nuclear reactor to help him. Gold was made in both German-language and French-language versions with Brigitte Helm reprising her role in both.
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- "Gold (1934 Film)" | 2022-11-23 | 41 Upvotes 20 Comments
π Battle for Castle Itter
The Battle for Castle Itter was fought in the Austrian North Tyrol village of Itter on 5 May 1945, in the last days of the European Theater of World War II.
Troops of the 23rd Tank Battalion of the 12th Armored Division of the US XXI Corps led by Captain John C. "Jack" Lee, Jr., a number of Wehrmacht soldiers led by Major Josef "Sepp" Gangl, SS-HauptsturmfΓΌhrer Kurt-Siegfried Schrader, and recently freed French prisoners of war defended Castle Itter against an attacking force from the 17th SS Panzergrenadier Division until relief from the American 142nd Infantry Regiment of the 36th Division of XXI Corps arrived.
The French prisoners included former prime ministers, generals and a tennis star. It is the only known time during the war in which Americans and Germans fought side-by-side. Popular accounts of the battle have called it the strangest battle of World War II.
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- "Battle for Castle Itter" | 2019-07-30 | 55 Upvotes 9 Comments