Random Articles (Page 3)
Have a deep view into what people are curious about.
π Proxy Firm
A proxy firm (also a proxy advisor, proxy adviser, proxy voting agency, vote service provider or shareholder voting research provider) provides services to shareholders (in most cases an institutional investor of some type) to vote their shares at shareholder meetings of, usually, quoted companies.
The typical services provided include agenda translation, provision of vote management software, voting policy development, company research, and vote administration including vote execution. According to their websites, not all firms provide voting recommendations and those that do may simply execute client voting instructions.
The votes executed are called "Proxy Votes" because the shareholder usually does not attend the meeting and instead sends instructions - a proxy appointment - for a third party, usually the chairman of the meeting to vote shares in accordance with the instructions given on the voting card.
π Hashlife
Hashlife is a memoized algorithm for computing the long-term fate of a given starting configuration in Conway's Game of Life and related cellular automata, much more quickly than would be possible using alternative algorithms that simulate each time step of each cell of the automaton. The algorithm was first described by Bill Gosper in the early 1980s while he was engaged in research at the Xerox Palo Alto Research Center. Hashlife was originally implemented on Symbolics Lisp machines with the aid of the Flavors extension.
Discussed on
- "HashLife β A memoized algorithm for Conway's Game of Life and cellular automata" | 2024-01-12 | 80 Upvotes 12 Comments
- "Hashlife" | 2017-06-11 | 10 Upvotes 2 Comments
π River Thames Frost Fairs
The River Thames frost fairs were held on the tideway of the River Thames in London, England in some winters, starting at least as early as the late 7th century all the way until the early 19th century. Most were held between the early 17th and early 19th centuries during the period known as the Little Ice Age, when the river froze over most frequently. During that time the British winter was more severe than it is now, and the river was wider and slower, further impeded by the medieval Old London Bridge.
Even at its peak, in the mid-17th century, the Thames in London froze less often than modern legend sometimes suggests, never exceeding about one year in ten except for four winters between 1649 and 1666. From 1400 until the removal of the medieval London Bridge in 1835, there were 24 winters in which the Thames was recorded to have frozen over at London; if "more or less frozen over" years (in parentheses) are included, the number is 26: 1408, 1435, 1506, 1514, 1537, 1565, 1595, 1608, 1621, 1635, 1649, 1655, 1663, 1666, 1677, 1684, 1695, 1709, 1716, 1740, (1768), 1776, (1785), 1788, 1795, and 1814. Of the 24, the numbers in each century were: 15th two, 16th five, 17th ten, 18th six, 19th one. The Thames freezes over more often upstream, beyond the reach of the tide, especially above the weirs, of which Teddington Lock is the lowest. The last great freeze of the higher Thames was in 1962β63.
Frost fairs were a rare event even in the coldest parts of the Little Ice Age. Some of the recorded frost fairs were in 695, 1608, 1683-4, 1716, 1739β40, 1789, and 1814. Recreational cold weather winter events were far more common elsewhere in Europe, for example in the Netherlands. These events in other countries as well as the winter festivals and carnivals around the world in present times can also be considered frost fairs. However, very few of them have actually used that title.
During the Great Frost of 1683β84, the severest frost recorded in England, the Thames was completely frozen for two months, with the ice reaching a thickness of 11 inches (28Β cm) in London. Solid ice was reported extending for miles off the coasts of the southern North Sea (England, France and the Low Countries), causing severe problems for shipping and preventing the use of many harbours.
Discussed on
- "River Thames Frost Fairs" | 2020-05-18 | 57 Upvotes 10 Comments
π Lazy Dog (Bomb)
The Lazy Dog (sometimes called a Red Dot Bomb or Yellow Dog Bomb) is a type of small, unguided kinetic projectile used by the U.S. Air Force. It measured about 1.75 inches (44Β mm) in length, 0.5 inches (13Β mm) in diameter, and weighed about 0.7 ounces (20Β g).
The weapons were designed to be dropped from an aircraft. They contained no explosive charge but as they fell they would develop significant kinetic energy making them lethal and able to easily penetrate soft cover such as jungle canopy, several inches of sand, or light armor. Lazy Dog munitions were simple and relatively cheap; they could be dropped in huge numbers in a single pass. Though their effects were often no less deadly than other projectiles, they did not leave unexploded ordnance (UXO) that could be active years after a conflict ended.
Lazy Dog projectiles were used primarily during the Korean and the Vietnam Wars.
Discussed on
- "Lazy Dog (Bomb)" | 2024-05-31 | 17 Upvotes 2 Comments
π CS Alert (1890)
CS Alert, or HMTS Alert, was a cable-laying ship that had a significant role in World War I. She was launched in 1871 for the Submarine Telegraph Company with the name The Lady Carmichael. In 1890 the ship was acquired by the General Post Office (GPO) as part of the nationalisation of the British telegraph network. At the outbreak of World War I, Alert was immediately dispatched to cut German telegraph cables in the English Channel, seriously damaging Germany's ability to securely communicate with the rest of the world. Alert was taken out of service as a cable ship in 1915 but her cable-handling gear was retained for fitting on her replacement. After the war, she worked as a merchant ship under various names, finally being wrecked at Redcar under the name Norham in 1932.
Discussed on
- "CS Alert (1890)" | 2019-08-29 | 35 Upvotes 17 Comments
π Anvil Firing
Anvil firing (also known as anvil launching or anvil shooting) is the practice of firing an anvil into the air with gunpowder.
In the UK, the term refers to a method of testing anvils. Black powder was poured onto the top of the anvil and ignited. If the anvil did not shatter it was deemed safe to use.
Discussed on
- "Anvil Firing" | 2019-04-06 | 174 Upvotes 89 Comments
π Occupy Wall Street
Occupy Wall Street (OWS) was a left-wing populist movement against economic inequality, corporate greed, big finance, and the influence of money in politics that began in Zuccotti Park, located in New York City's Financial District, and lasted for fifty-nine daysβfrom September 17 to November 15, 2011.
The motivations for Occupy Wall Street largely resulted from public distrust in the private sector during the aftermath of the Great Recession in the United States. There were many particular points of interest leading up to the Occupy movement that angered populist and left-wing groups. For instance, the 2008 bank bailouts under the George W. Bush administration utilized congressionally appropriated taxpayer funds to create the Troubled Asset Relief Program (TARP), which purchased toxic assets from failing banks and financial institutions. The U.S. Supreme Court ruling in Citizens United v. FEC in January 2010 allowed corporations to spend unlimited amounts on independent political expenditures without government regulation. This angered many populist and left-wing groups that viewed the ruling as a way for moneyed interests to corrupt public institutions and legislative bodies, such as the United States Congress.
The protests gave rise to the wider Occupy movement in the United States and other Western countries. The Canadian anti-consumerist magazine Adbusters initiated the call for a protest. The main issues raised by Occupy Wall Street were social and economic inequality, greed, corruption and the undue influence of corporations on governmentβparticularly from the financial services sector. The OWS slogan, "We are the 99%", refers to income and wealth inequality in the U.S. between the wealthiest 1% and the rest of the population. To achieve their goals, protesters acted on consensus-based decisions made in general assemblies which emphasized redress through direct action over the petitioning to authorities.
The protesters were forced out of Zuccotti Park on November 15, 2011. Protesters then turned their focus to occupying banks, corporate headquarters, board meetings, foreclosed homes, college and university campuses and social media.
Discussed on
- "Occupy Wall Street" | 2024-05-05 | 25 Upvotes 4 Comments
π Highway of Death
The Highway of Death (Arabic: Ψ·Ψ±ΩΩ Ψ§ΩΩ ΩΨͺ αΉarΔ«q al-mawt) is a six-lane highway between Kuwait and Iraq, officially known as Highway 80. It runs from Kuwait City to the border town of Safwan in Iraq and then on to the Iraqi city of Basra. The road was used by Iraqi armored divisions for the 1990 invasion of Kuwait. It was repaired after the Gulf War and used by U.S. and British forces in the initial stages of the 2003 invasion of Iraq.
During the American-led coalition offensive in the Persian Gulf War, American, Canadian, British and French aircraft and ground forces attacked retreating Iraqi military personnel attempting to leave Kuwait on the night of February 26β27, 1991, resulting in the destruction of hundreds of vehicles and the deaths of many of their occupants. Between 1,400 and 2,000 vehicles were hit or abandoned on the main Highway 80 north of Al Jahra.
The scenes of devastation on the road are some of the most recognizable images of the war, and it has been suggested that they were a factor in President George H. W. Bush's decision to declare a cessation of hostilities the next day. Many Iraqi forces successfully escaped across the Euphrates river, and the U.S. Defense Intelligence Agency estimated that upwards of 70,000 to 80,000 troops from defeated divisions in Kuwait might have fled into Basra, evading capture.
π Chinese room argument
The Chinese room argument holds that a digital computer executing a program cannot be shown to have a "mind", "understanding" or "consciousness", regardless of how intelligently or human-like the program may make the computer behave. The argument was first presented by philosopher John Searle in his paper, "Minds, Brains, and Programs", published in Behavioral and Brain Sciences in 1980. It has been widely discussed in the years since. The centerpiece of the argument is a thought experiment known as the Chinese room.
The argument is directed against the philosophical positions of functionalism and computationalism, which hold that the mind may be viewed as an information-processing system operating on formal symbols. Specifically, the argument is intended to refute a position Searle calls strong AI: "The appropriately programmed computer with the right inputs and outputs would thereby have a mind in exactly the same sense human beings have minds."
Although it was originally presented in reaction to the statements of artificial intelligence (AI) researchers, it is not an argument against the behavioural goals of AI research, because it does not limit the amount of intelligence a machine can display. The argument applies only to digital computers running programs and does not apply to machines in general.
Discussed on
- "Chinese room argument" | 2017-07-04 | 11 Upvotes 9 Comments
π Tifinagh (Tuareg Berber Script)
Tifinagh (Tuareg Berber language: β΅β΄Όβ΅β΅ or β΅β΄Όβ΅β΅β΅, Berber pronunciation:Β [tifinaΙ£]) or Tuareg Tifinagh is an abjad script used to write the Tuareg Berber language by the Tuareg Berbers of the Sahara desert in southern Algeria, northeastern Mali, northern Niger and northern Burkina Faso. Tuareg Tifinagh is descended from the ancient Libyco-Berber alphabet.
Neo-Tifinagh (β΅β΅β΄Όβ΅β΅β΄°β΅) is an alphabet that was created in northern Algeria around the 1980s as a modified version of the traditional Tuareg Tifinagh. Neo-Tifinagh has been used since the 1980s by Algerians and later by Moroccans for the symbolic promotion of the Berber language, while mainly using the Berber Latin alphabet in most publications. Neo-Tifinagh is often simply called "Tifinagh" by non-academics in Berber countries and in the media, thus confusing it with the traditional and distinct "Tuareg Tifinagh" which is the actual "Tifinagh".
There are significant differences between the ancient Libyco-Berber script and the Tuareg Tifinagh script, but also many similarities. Many letters from the ancient Libyco-Berber script do not exist (anymore) in the Tuareg Tifinagh, while other letters evolved into a different pronunciation in the current Tuareg Tifinagh script.
There are also significant differences between the Tuareg Tifinagh script and the newly created Neo-Tifinagh alphabet. Many Tuareg Tifinagh letters are discarded in Neo-Tifinagh, and other ones are modified in form or in pronunciation. The Neo-Tifinagh alphabet also features invented vowels and other letters not found in Tuareg Tifinagh. About half of the letters in the Neo-Tifinagh alphabet were either completely invented (β΅₯,β΄»,β΅,β΅,β΅,β΅,β΅―,β΅,β΅,β΄½,β΅ ,β΄Ώ,β΅,β΅ ), modified in form (β΄°,β΅,β΄Ό,β΅,β΅) or repurposed for a different pronunciation (β΅,β΅‘,β΄΅). All traditional Tuareg Tifinagh letters that consist entirely of dots (β΅,β΅,β΄Ύ,β΅,β΅,β΅) were discarded by the creators of Neo-Tifinagh and were replaced by newly invented ones. Tuareg people in the Sahara desert continue to use these dotted letters as an integral part of their traditional Tuareg Tifinagh script, thus deliberately distinguishing themselves and their writings from the northern Berbers of Morocco and northern Algeria who use the Neo-Tifinagh alphabet or the Berber Latin alphabet in writing the Berber language.
The ancient Libyco-Berber script (or the Libyc script) was used by the ancient northern Berbers known as Libyco-Berbers, also known as Libyc people, Numidians, Afri and Mauretanians who inhabited the northern parts of Morocco, Algeria, Tunisia and Libya as well as the Canary Islands west of Morocco.
From the ancient Libyco-Berber script came the Tifinagh script (Tuareg Tifinagh) through a long evolution. And then from the Tifinagh script was the modern Neo-Tifinagh alphabet created.
The name Tifinagh is stylized as TifinaΙ£ in the Berber Latin alphabet, and in the Neo-Tifinagh alphabet it is written as β΅β΅β΄Όβ΅β΅β΄°β΅, while in the Tuareg people's traditional Tifinagh it's written as β΅β΄Όβ΅β΅β΅ or β΅β΄Όβ΅β΅.
Neo-Tifinagh, which was created in northern Algeria around the 1980s, is a heavily modified version of the traditional Tuareg Tifinagh script. This newly created Neo-Tifinagh script spread from Algeria to Morocco and was rebranded by the Moroccan Royal Institute of the Amazigh Culture (IRCAM) as "Tifinaghe-Ircam" or simply "Tifinaghe", and is used in a small part of Moroccan and some Libyan elementary schools to teach the Berber language to children, as well as in a number of literary publications and some websites and media. In Algeria, most Berber language education programs in elementary schools, high schools and university use the Berber Latin alphabet, while a small number of schools use Neo-Tifinagh, Tuareg Tifinagh in the south, or even the Arabic alphabet.
The word tifinagh is thought by some scholars to be a Berberized feminine plural cognate or adaptation of the Latin word "Punicus", (meaning "Punic" or "Phoenician") through the Berber feminine prefix ti- and Latin Punicus; thus tifinagh could possibly mean "the Phoenician (letters)" or "the Punic letters". Others support an etymology involving the Tuareg verb efnegh, meaning to write. However, the Tuareg verb efnegh is probably derived from the noun "Tifinagh" because all the northern Berbers of Morocco, northern Algeria, Tunisia and northern Libya have a different (and probably older) verb "ari, aru, ara" which means "to write".