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πŸ”— Dusty Hill of ZZ Top Dead

πŸ”— United States πŸ”— Biography πŸ”— United States/Texas πŸ”— Biography/Musicians

Joseph Michael "Dusty" Hill (May 19, 1949 – July 28, 2021) was an American musician, singer, and songwriter, best known as the bassist and secondary lead vocalist of the American rock group ZZ Top; he also played keyboards with the band. He was inducted into the Rock and Roll Hall of Fame, as a member of ZZ Top, in 2004.

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πŸ”— The Gods of the Copybook Headings

πŸ”— Poetry

"The Gods of the Copybook Headings" is a poem by Rudyard Kipling, characterized by biographer Sir David Gilmour as one of several "ferocious post-war eruptions" of Kipling's souring sentiment concerning the state of Anglo-European society. It was first published in the Sunday Pictorial of London on 26 October 1919; in America, it was published as "The Gods of the Copybook Maxims" in Harper's Magazine in January 1920.

In the poem, Kipling's narrator counterposes the "Gods" of the title, who embody eternal truths, against "the Gods of the Market-Place", who represent an optimistic self-deception into which it supposes society has fallen in the early 20th century.

The "copybook headings" to which the title refers were proverbs or maxims, often drawn from sermons and scripture extolling virtue and wisdom, that were printed at the top of the pages of copybooks, special notebooks used by 19th-century British schoolchildren. The students had to copy the maxims repeatedly, by hand, down the page. The exercise was thought to serve simultaneously as a form of moral education and penmanship practice.

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πŸ”— Men Without Work: America's Invisible Crisis (Book)

πŸ”— Economics πŸ”— Books

Men Without Work: America's Invisible Crisis is a 2016 book by the American political economist Nicholas Eberstadt discussing the phenomenon of American men in their prime leaving the workforce. Statistically, the labor force involvement for men twenty and older fell from 86% to 68% between 1948 and 2015. The book discusses the history, causes, and implications of the phenomenon, as well as possible solutions.

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πŸ”— El Ajedrecista

πŸ”— Chess

El Ajedrecista (English: The Chess Player) is an automaton built in 1912 by Leonardo Torres y Quevedo, one of the first autonomous machines capable of playing chess. As opposed to the human-operated The Turk and Ajeeb, El Ajedrecista was a true automaton built to play chess without human guidance. It played an endgame with three chess pieces, automatically moving a white king and a rook to checkmate the black king moved by a human opponent.

The device could be considered the first computer game in history. It created great excitement when it made its debut, at the University of Paris in 1914. It was first widely mentioned in Scientific American as "Torres and His Remarkable Automatic Devices" on November 6, 1915.

The automaton does not deliver checkmate in the minimum number of moves, nor always within the 50 moves allotted by the fifty-move rule, because of the simple algorithm that calculates the moves. It did, however, checkmate the opponent every time. If an illegal move was made by the opposite player, the automaton would signal it by turning on a light. If the opposing player made three illegal moves, the automaton would stop playing.

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πŸ”— Revenge Bedtime Procrastination

πŸ”— Psychology

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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πŸ”— Liquid Breathing

πŸ”— Medicine πŸ”— Medicine/Pulmonology πŸ”— Physiology πŸ”— Scuba diving πŸ”— Physiology/respiratory

Liquid breathing is a form of respiration in which a normally air-breathing organism breathes an oxygen-rich liquid (such as a perfluorocarbon), rather than breathing air.

This requires certain physical properties such as respiratory gas solubility, density, viscosity, vapor pressure, and lipid solubility which some, but not all, perfluorochemicals (perfluorocarbon) have. Thus, it is critical to choose the appropriate PFC for a specific biomedical application, such as liquid ventilation, drug delivery or blood substitutes. The physical properties of PFC liquids vary substantially; however, the one common property is their high solubility for respiratory gases. In fact, these liquids carry more oxygen and carbon dioxide than blood.

In theory, liquid breathing could assist in the treatment of patients with severe pulmonary or cardiac trauma, especially in pediatric cases. Liquid breathing has also been proposed for use in deep diving and space travel. Despite some recent advances in liquid ventilation, a standard mode of application has not yet been established.

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πŸ”— Small-World Experiment

πŸ”— Mass surveillance πŸ”— Sociology

The small-world experiment comprised several experiments conducted by Stanley Milgram and other researchers examining the average path length for social networks of people in the United States. The research was groundbreaking in that it suggested that human society is a small-world-type network characterized by short path-lengths. The experiments are often associated with the phrase "six degrees of separation", although Milgram did not use this term himself.

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πŸ”— Unidirectional Network

A unidirectional network (also referred to as a unidirectional gateway or data diode) is a network appliance or device that allows data to travel in only one direction. Data diodes can be found most commonly in high security environments, such as defense, where they serve as connections between two or more networks of differing security classifications. Given the rise of industrial IoT and digitization, this technology can now be found at the industrial control level for such facilities as nuclear power plants, power generation and safety critical systems like railway networks.

After years of development the use of data diodes have increased creating two variations:

  • Data diode: Network appliance or device allowing raw data to travel only in one direction, used in guaranteeing information security or protection of critical digital systems, such as industrial control systems, from inbound cyber attacks.
  • Unidirectional gateway: Combination of hardware and software running in proxy computers in the source and destination networks. The hardware, a data diode, enforces physical unidirectionality and the software replicates databases and emulates protocol servers to handle bi-directional communication. The unidirectional gateway is capable of transferring multiple protocols and data types simultaneously. It contains a broader range of cybersecurity features like, secure boot, certificate management, data integrity, forward error correction (FEC), secure communication via TLS, among others. A unique characteristic is that data is transferred deterministically (to predetermined locations) with a protocol "break" that allows the data to be transferred through the data diode.

Data diodes are commonly found in high security military and government environments, and are now becoming widely spread in sectors like oil & gas, water/wastewater, airplanes (between flight control units and in-flight entertainment systems), manufacturing and cloud connectivity for industrial IoT. New regulations have increased demand and with increased capacity, major technology vendors have lowered the cost of the core technology.

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πŸ”— First Council of Nicaea

πŸ”— Greece πŸ”— Guild of Copy Editors πŸ”— Turkey πŸ”— Christianity πŸ”— Catholicism πŸ”— Christianity/theology πŸ”— Greece/Byzantine world πŸ”— Christianity/Eastern Orthodoxy πŸ”— Christianity/Oriental Orthodoxy πŸ”— Christianity/Syriac Christianity πŸ”— Christianity/Christian history

The First Council of Nicaea ( ny-SEE-Ι™; Ancient Greek: Σύνοδος Ο„αΏ†Ο‚ Νικαίας, romanized:Β SΓ½nodos tΓͺs NikaΓ­as) was a council of Christian bishops convened in the Bithynian city of Nicaea (now Δ°znik, Turkey) by the Roman Emperor Constantine I. The Council of Nicaea met from May until the end of July 325.

This ecumenical council was the first of many efforts to attain consensus in the church through an assembly representing all Christendom. Hosius of Corduba may have presided over its deliberations. Its main accomplishments were settlement of the Christological issue of the divine nature of God the Son and his relationship to God the Father, the construction of the first part of the Nicene Creed, mandating uniform observance of the date of Easter, and promulgation of early canon law.

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πŸ”— JP-7

πŸ”— Aviation πŸ”— Aviation/aircraft

Turbine Fuel, Low Volatility, JP-7, commonly known as JP-7 (referred to as Jet Propellant 7 prior to MIL-DTL-38219) is a specialized type of jet fuel developed for the United States Air Force (USAF) for use in its supersonic military aircraft; including the SR-71 Blackbird and the Boeing X-51 Waverider.

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  • "JP-7" | 2020-07-29 | 59 Upvotes 34 Comments