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🔗 Biography 🔗 Africa 🔗 Japan 🔗 Japan/History 🔗 Japan/Biography

Yasuke (variously rendered as 弥助 or 弥介, 彌助 or 彌介 in different sources) was a man of African origin who served as a retainer under the Japanese daimyō Oda Nobunaga. In 1579, Yasuke arrived in Japan in the service of Italian Jesuit missionary Alessandro Valignano, Visitor of Missions in the Indies, in India.

Yasuke is thought by some to have been the first African that Nobunaga had ever seen and he was one of the many Africans to have come with the Portuguese to Japan during the Nanban trade. He was also present during the Honnō-ji Incident, the forced suicide of Nobunaga at the hands of his samurai general Akechi Mitsuhide on 21 June 1582.

🔗 Philosophy 🔗 Politics 🔗 Psychology 🔗 Marketing & Advertising 🔗 Philosophy/Philosophy of science 🔗 Philosophy/Epistemology 🔗 Sociology 🔗 Education

Social facilitation is defined as improvement or decrease in individual performance when working with other people rather than alone.

In addition to working together with other people, social facilitation also occurs in the mere presence of other people. Previous research has found that individual performance is improved by coaction, performing a task in the presence of others who are performing a similar task, and having an audience while performing a certain task. An example of coaction triggering social facilitation can be seen in instances where a cyclist's performance is improved when cycling along with other cyclists as compared to cycling alone. An instance where having an audience triggers social facilitation can be observed where a weightlifter lifts heavier weight in the presence of an audience. Social facilitation has occasionally been attributed to the fact that certain people are more susceptible to social influence, with the argument that personality factors can make these people more aware of evaluation.

The Yerkes-Dodson law, when applied to social facilitation, states that "the mere presence of other people will enhance the performance in speed and accuracy of well-practiced tasks, but will degrade in the performance of less familiar tasks." Compared to their performance when alone, when in the presence of others they tend to perform better on simple or well-rehearsed tasks and worse on complex or new ones.

The audience effect attempts to explain psychologically why the presence of an audience leads to people performing tasks better in some cases and worse in others. This idea was further explored when some studies showed that the presence of a passive audience facilitated the better performance of a simple task, while other studies showed that the presence of a passive audience inhibited the performance of a more difficult task or one that was not well practiced, possibly due to psychological pressure or stress. (See Yerkes–Dodson law.)

🔗 Technology 🔗 Business 🔗 Electronics 🔗 Energy 🔗 Home Living

The Phoebus cartel existed to control the manufacture and sale of incandescent light bulbs. They appropriated market territories and fixed the useful life of such bulbs. Corporations based in Europe and America founded the cartel on January 15, 1925 in Geneva. They had intended the cartel to last for thirty years (1925 to 1955). The cartel ceased operations in 1939 owing to the outbreak of World War II. The cartel included manufacturers Osram, General Electric, Associated Electrical Industries, and Philips, among others.

The Phoebus cartel created a notable landmark in the history of the global economy because it engaged in large-scale planned obsolescence to generate repeated sales and maximize profit. It also reduced competition in the light bulb industry for almost fifteen years. Critics accused the cartel of preventing technological advances that would produce longer-lasting light bulbs. Phoebus based itself in Switzerland. The corporation named itself Phœbus S.A. Compagnie Industrielle pour le Développement de l'Éclairage (French for "Phoebus, Inc. Industrial Company for the Development of Lighting").

🔗 Video games 🔗 Chess

1K ZX Chess is a 1982 chess program for the unexpanded Sinclair ZX81.

🔗 Mathematics

In geometry, the problem of dividing a circle into areas by means of an inscribed polygon with n sides in such a way as to maximise the number of areas created by the edges and diagonals, sometimes called Moser's circle problem, has a solution by an inductive method. The greatest possible number of regions, r_G = ( ⁿ
₄ ) + ( ⁿ
₂ ) + 1, giving the sequence 1, 2, 4, 8, 16, 31, 57, 99, 163, 256, ... (OEIS: A000127). Though the first five terms match the geometric progression 2^{n − 1}, it diverges at n = 6, showing the risk of generalising from only a few observations.

🔗 France 🔗 Military history 🔗 Military history/Military science, technology, and theory 🔗 Military history/Weaponry 🔗 Military history/World War I 🔗 Military history/French military history 🔗 Military history/Military land vehicles 🔗 Military history/European military history

The Boirault machine (French: Appareil Boirault), was an early French experimental landship, designed in 1914 and built in early 1915. It has been considered as "another interesting ancestor of the tank", and described as a "rhomboid-shaped skeleton tank without armour, with single overhead track". Ultimately, the machine was deemed impractical and was nicknamed Diplodocus militaris. It preceded the design and development of the English Little Willie tank by six months.

🔗 Biography 🔗 Portugal

Álvaro de Campos (Portuguese pronunciation: [ˈalvɐɾu ðɨ ˈkɐ̃puʃ]; October 15, 1890 – November 30, 1935) was one of the poet Fernando Pessoa's various heteronyms, widely known by his powerful and wrathful writing style. According to his author, this alter ego was born in Tavira, Portugal, studied mechanical engineering and finally graduated in ship engineering in Glasgow. After a journey in Ireland, Campos sailed to the Orient and wrote his poem "Opiario" in the Suez Canal "onboard". He worked in 'Barrow-on-Furness' (sic) (of which Pessoa wrote a poem about) and Newcastle-on-Tyne (1922). Unemployed, Campos returned to Lisbon in 1926 (he wrote then the poem "Lisbon Revisited"), where he lived ever since. He was born in October, 1890, but Pessoa didn't put an end to the life of Campos, so he would have survived his author who died in November, 1935. Campos' works may be split in three phases: the decadent phase, the futuristic phase and the decadent (sad) phase. He chose Whitman and Marinetti as masters, showing some similarities with their works, mainly in the second phase: hymns like "Ode Triunfal", "Ode Marítima", and "Ultimatum" praise the power of the rising technology, the strength of the machines, the dark side of the industrial civilization, and an enigmatic love for the machines. The first phase (marked by the poem Opiário) shared some of its pessimism with Pessoa's friend Mário de Sá-Carneiro, one of his co-workers in Orpheu magazine. In the last phase, Pessoa drops the mask, and reveals through Campos all the emptiness and nostalgy that grew during his last years of life. In his last phase Campos wrote the poems "Lisbon Revisited" and the well-known "Tobaco Shop".

"I always want to be the thing I feel kinship with...
To feel everything in every way,
To hold all opinions,
To be sincere contradicting oneself every minute..."

🔗 Visual arts

Artist's Shit (Italian: Merda d'artista) is a 1961 artwork by the Italian artist Piero Manzoni. The work consists of 90 tin cans, each reportedly filled with 30 grams (1.1 oz) of faeces, and measuring 4.8 by 6.5 centimetres (1.9 in × 2.6 in), with a label in Italian, English, French, and German stating:

Artist's Shit
Contents 30 gr net
Freshly preserved
Produced and tinned
in May 1961

🔗 Writing systems

A lipogram (from Ancient Greek: λειπογράμματος, leipográmmatos, "leaving out a letter") is a kind of constrained writing or word game consisting of writing paragraphs or longer works in which a particular letter or group of letters is avoided. Extended Ancient Greek texts avoiding the letter sigma are the earliest examples of lipograms.

Writing a lipogram may be a trivial task when avoiding uncommon letters like Z, J, Q, or X, but it is much more challenging to avoid common letters like E, T, or A in the English language, as the author must omit many ordinary words. Grammatically meaningful and smooth-flowing lipograms can be difficult to compose. Identifying lipograms can also be problematic, as there is always the possibility that a given piece of writing in any language may be unintentionally lipogrammatic. For example, Poe's poem The Raven contains no Z, but there is no evidence that this was intentional.

A pangrammatic lipogram is a text that uses every letter of the alphabet except one. For example, "The quick brown fox jumped over the lazy dog" omits the letter S, which the usual pangram includes by using the word jumps.

🔗 Medicine 🔗 Linguistics 🔗 Linguistics/Applied Linguistics

Semantic satiation is a psychological phenomenon in which repetition causes a word or phrase to temporarily lose meaning for the listener, who then perceives the speech as repeated meaningless sounds. Extended inspection or analysis (staring at the word or phrase for a lengthy period of time) in place of repetition also produces the same effect.