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🔗 Maestro I – The First IDE?
Maestro I was an early integrated development environment for software. developed by Softlab Munich in the 1970s and 1980s.
The system was originally called "Programm-Entwicklungs-Terminal-System" ("program development terminal system") abbreviated as PET; it was renamed after Commodore International introduced a home computer called the Commodore PET in 1977.
At one time there were 22,000 installations worldwide. The first USA installations were at Boeing in 1979, with eight Maestro I systems and Bank of America with 24 system and 576 developer terminals. Until 1989, there were 6,000 installations in the Federal Republic of Germany [1].
One of the last Maestro I systems is at the Museum of Information Technology at Arlington.
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- "Maestro I – The First IDE?" | 2024-01-10 | 22 Upvotes 5 Comments
🔗 Overchoice
Overchoice or choice overload is the paradoxical phenomenon that choosing between a large variety of options can be detrimental to decision making processes. The term was first introduced by Alvin Toffler in his 1970 book, Future Shock.
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- "Overchoice" | 2023-10-29 | 10 Upvotes 3 Comments
🔗 Here is one hand
Here is one hand is an epistemological argument created by George Edward Moore in reaction against philosophical skepticism and in support of common sense.
The argument takes the following form:
- Here is one hand,
- And here is another.
- There are at least two external objects in the world.
- Therefore, an external world exists.
🔗 Svalbard, the Norwegian archipelago that anyone can call home
Uniquely, the Norwegian archipelago of Svalbard, located in the High Arctic, is an entirely visa-free zone. However, travelers who have a visa requirement to enter mainland Norway/the Schengen area must have a Schengen visa if they travel via mainland Norway/the Schengen area. This must be a double-entry visa so they can return to mainland Norway/the Schengen area.
Those traveling to and from Svalbard must bring passports or national identity cards, as all are subject to identity check. Passports or national identity cards satisfy the Schengen regulatory requirements for identity verification. Due to a transitional arrangement, Norwegian citizens could also prove their identity with a document issued in Norway which included at least name, photo and date of birth, such as a Norwegian driving licence issued after 1998; the transitional period ended on 31 December 2021.
Everybody may live and work in Svalbard indefinitely regardless of country of citizenship. The Svalbard Treaty grants treaty nationals equal right of abode as Norwegian nationals. Non-treaty nationals may live and work indefinitely visa-free as well. Per Sefland, then Governor of Svalbard, said "It has been a chosen policy so far that we haven't made any difference between the treaty citizens and those from outside the treaty". "Regulations concerning rejection and expulsion from Svalbard" are enforced on a non-discriminatory basis. Grounds for exclusion include lack of means of support, and violation of laws or regulations.
Hans-Henrik Hartmann, then head of the legal unit at the Norwegian government's immigration department, said, "If an asylum seeker is refused residence in Norway he can settle in Svalbard so long as he can get there and is able to pay for himself." Svalbard has a high cost of living, but only a limited welfare system. Welfare and health care is available only for Norwegians and for workers employed by a Norwegian company.
The Norwegian Nationality Act applies to Svalbard, cf. Section 1. However, the Act does not provide any special rules for foreign nationals residing on Svalbard. Foreigners living on Svalbard must meet the conditions of the law to obtain Norwegian citizenship. In order to acquire Norwegian citizenship upon application, there is, according to the main rule, a requirement to fulfill the conditions for a permanent residence permit, and consequently a requirement for residence on the Norwegian mainland with a residence permit. Such permits are granted in accordance with the Norwegian Immigration Act. Because the Norwegian Immigration Act does not apply to Svalbard, cf. Section 6, residence on Svalbard does not qualify foreign nationals for residence permits on the Norwegian mainland.
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- "Svalbard, the Norwegian archipelago that anyone can call home" | 2022-01-09 | 13 Upvotes 5 Comments
🔗 Transputer
The transputer is a series of pioneering microprocessors from the 1980s, featuring integrated memory and serial communication links, intended for parallel computing. They were designed and produced by Inmos, a semiconductor company based in Bristol, United Kingdom.
For some time in the late 1980s, many considered the transputer to be the next great design for the future of computing. While Inmos and the transputer did not achieve this expectation, the transputer architecture was highly influential in provoking new ideas in computer architecture, several of which have re-emerged in different forms in modern systems.
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- "Transputer" | 2019-12-09 | 236 Upvotes 140 Comments
- "Transputer" | 2018-01-19 | 46 Upvotes 14 Comments
🔗 Unexplained red flashes on the moon's surface
A transient lunar phenomenon (TLP) or lunar transient phenomenon (LTP) is a short-lived light, color, or change in appearance on the surface of the Moon. The term was created by Patrick Moore in his co-authorship of NASA Technical Report R-277 Chronological Catalog of Reported Lunar Events, published in 1968.
Claims of short-lived lunar phenomena go back at least 1,000 years, with some having been observed independently by multiple witnesses or reputable scientists. Nevertheless, the majority of transient lunar phenomenon reports are irreproducible and do not possess adequate control experiments that could be used to distinguish among alternative hypotheses to explain their origins.
Most lunar scientists will acknowledge transient events such as outgassing and impact cratering do occur over geologic time. The controversy lies in the frequency of such events.
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- "Unexplained red flashes on the moon's surface" | 2009-04-13 | 17 Upvotes 2 Comments
🔗 33 Thomas Street
33 Thomas Street (formerly the AT&T Long Lines Building) is a 550-foot-tall (170Â m) skyscraper in Civic Center, Lower Manhattan, New York City. It stands on the east side of Church Street, between Thomas Street and Worth Street. The building is an example of the Brutalist architectural style. It is a telephone exchange or wire center building which contained three major 4ESS switches used for interexchange (long distance) telephony, as well as a number of other switches used for competitive local exchange carrier services. However, it is not used for incumbent local exchange carrier services, and is not a central office. The CLLI code for this facility is NYCMNYBW. The building has also been described as the likely location of a National Security Agency (NSA) mass surveillance hub codenamed TITANPOINTE.
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- "33 Thomas Street" | 2019-11-17 | 156 Upvotes 59 Comments
🔗 Hotelling's law
Hotelling's law is an observation in economics that in many markets it is rational for producers to make their products as similar as possible. This is also referred to as the principle of minimum differentiation as well as Hotelling's linear city model. The observation was made by Harold Hotelling (1895–1973) in the article "Stability in Competition" in Economic Journal in 1929.
The opposing phenomenon is product differentiation, which is usually considered to be a business advantage if executed properly.
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- "Hotelling's law" | 2015-12-24 | 57 Upvotes 35 Comments
🔗 Protein Leverage Hypothesis
The protein leverage hypothesis states that human beings will prioritize the consumption of protein in food over other dietary components, and will eat until protein needs have been met, regardless of energy content, thus leading to over-consumption of foodstuffs when their protein content is low.
This hypothesis has been put forward as a potential explanation of the obesity epidemic. Empirical tests have provided some evidence to confirm the hypothesis with one study suggesting that this could be a link between ultra-processed foods and the prevalence of obesity in the developed world.
In the 1980s, David Raubenheimer and Stephen Simpson, researchers now at the University of Sydney, began to study appetite and food intake in locusts. By studying responses to artificial diets with differing compositions of protein and carbohydrate, they developed the protein leverage hypothesis. Their experiments showed that those who aren't getting enough protein in their diet will continue to be hungry, even when their overall caloric intake is high. "Protein decoys", such as ultraprocessed savory foods that contain little protein (e.g., barbecue chips), are likely to be attractive and to result in overeating. The hormone FGF21, which is released from the liver, can drive savory-seeking behavior under conditions of low protein intake. However, extremely high protein diets can also have drawbacks. In 2020 Simpson and Raubenheimer published the popular science book Eat Like the Animals: What Nature Teaches Us about the Science of Healthy Eating, which details their experiments. For lifelong health they recommend eating a balanced diet with more fiber and fewer fats and carbohydrates rather than an extremely high protein diet.
In 1995, Australian researcher Susanna Holt developed the concept of satiety value, a measure of how much a given food is likely to satisfy the hunger of someone. High protein foods have been found to have high satiety values, though these are outmatched by potatoes and oats (which have a low glycemic index). Fruits rank similarly to high protein foods (likely due to their high level of dietary fibre).
🔗 Hofstadter's butterfly
In condensed matter physics, Hofstadter's butterfly describes the spectral properties of non-interacting two dimensional electrons in a magnetic field. The fractal, self-similar, nature of the spectrum was discovered in the 1976 Ph.D. work of Douglas Hofstadter and is one of the early examples of computer graphics. The name reflects the visual resemblance of the figure on the right to a swarm of butterflies flying to infinity.
The Hofstadter butterfly plays an important role in the theory of the integer quantum Hall effect, and D.J. Thouless has been awarded the Nobel prize in physics in 2016 for the discovery that the wings of the butterfly are characterized by Chern integers, the quantized Hall conductances discovered in 1980 by Klaus von Klitzing for which he has been awarded the Nobel prize in 1985. The colors in the diagram reflect the different Chern numbers.
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- "Hofstadter's butterfly" | 2014-06-20 | 41 Upvotes 10 Comments