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🔗 United States 🔗 Environment 🔗 Medicine 🔗 United States/Louisiana

Cancer Alley (French: Allée du Cancer) is the regional nickname given to an 85-mile (137 km) stretch of land along the Mississippi River between Baton Rouge and New Orleans, in the River Parishes of Louisiana, which contains over 200 petrochemical plants and refineries. This area accounts for 25% of the petrochemical production in the United States. Environmentalists consider the region a sacrifice zone where rates of cancer caused by air pollution exceed the federal government's own limits of acceptable risk. Others have referred to the same region as "Death Alley".

Community leaders such as Sharon Lavigne have led the charge in protesting the expansion of the petrochemical industry in Cancer Alley, as well as addressing the associated racial and economic disparities.

🔗 Mathematics 🔗 Philosophy 🔗 Socialism

The mathematical manuscripts of Karl Marx are a manuscript collection of Karl Marx's mathematical notes where he attempted to derive the foundations of infinitesimal calculus from first principles.

The notes that Marx took have been collected into four independent treatises: On the Concept of the Derived Function, On the Differential, On the History of Differential Calculus, and Taylor's Theorem, MacLaurin's Theorem, and Lagrange's Theory of Derived Functions, along with several notes, additional drafts, and supplements to these four treatises. These treatises attempt to construct a rigorous foundation for calculus and use historical materialism to analyze the history of mathematics.

Marx's contributions to mathematics did not have any impact on the historical development of calculus, and he was unaware of many more recent developments in the field at the time, such as the work of Cauchy. However, his work in some ways anticipated, but did not influence, some later developments in 20th century mathematics. These manuscripts, which are from around 1873–1883, were not published in any language until 1968 when they were published in the Soviet Union alongside a Russian translation. Since their publication, Marx's independent contributions to mathematics have been analyzed in terms of both his own historical and economic theories, and in light of their potential applications of nonstandard analysis.

The number 6174 is known as Kaprekar's constant after the Indian mathematician D. R. Kaprekar. This number is renowned for the following rule:

1. Take any four-digit number, using at least two different digits (leading zeros are allowed).
2. Arrange the digits in descending and then in ascending order to get two four-digit numbers, adding leading zeros if necessary.
3. Subtract the smaller number from the bigger number.
4. Go back to step 2 and repeat.

The above process, known as Kaprekar's routine, will always reach its fixed point, 6174, in at most 7 iterations. Once 6174 is reached, the process will continue yielding 7641 – 1467 = 6174. For example, choose 1459:

The only four-digit numbers for which Kaprekar's routine does not reach 6174 are repdigits such as 1111, which give the result 0000 after a single iteration. All other four-digit numbers eventually reach 6174 if leading zeros are used to keep the number of digits at 4. For numbers with three identical numbers and a fourth number that is one number higher or lower (such as 2111), it is essential to treat 3-digit numbers with a leading zero; for example: 2111 – 1112 = 0999; 9990 – 999 = 8991; 9981 – 1899 = 8082; 8820 – 288 = 8532; 8532 – 2358 = 6174.

🔗 Writing systems

Y, or y, is the 25th and penultimate letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. According to some authorities, it is the sixth (or seventh if including W) vowel letter of the English alphabet. In the English writing system, it mostly represents a vowel and seldom a consonant, and in other orthographies it may represent a vowel or a consonant. Its name in English is wye (pronounced ), plural wyes.

🔗 Cats 🔗 Malaysia

Operation Cat Drop is the name given to the delivery of some 14,000 cats by the United Kingdom's Royal Air Force to remote regions of the then-British colony of Sarawak (today part of Malaysia), on the island of Borneo in 1960. The cats were flown out of Singapore and delivered in crates dropped by parachutes as part of a broader program of supplying cats to combat a plague of rats. The operation was reported as a "success" at the time. Some newspaper reports published soon after the Operation reference only 23 cats being used. However, later reports state as many as 14,000 cats were used. An additional source references a "recruitment" drive for 30 cats a few days prior to Operation Cat Drop.

🔗 United States 🔗 Environment 🔗 Mammals 🔗 United States/Idaho

The beaver drop was a 1948 Idaho Department of Fish and Game program to relocate beavers (Castor canadensis). The program involved moving 76 beavers by airplane and parachuting them to new areas in Central Idaho. The program was initiated to both reduce cost and decrease mortality rates during the relocation. Alleviating complaints about "nuisance beavers" and their activities were an underlying reason for it.

🔗 Astronomy 🔗 Time

Decimal time is the representation of the time of day using units which are decimally related. This term is often used specifically to refer to the French Republican calendar time system used in France from 1794 to 1800, during the French Revolution, which divided the day into 10 decimal hours, each decimal hour into 100 decimal minutes and each decimal minute into 100 decimal seconds (100000 decimal seconds per day), as opposed to the more familiar standard time, which divides the day into 24 hours, each hour into 60 minutes and each minute into 60 seconds (86400 SI seconds per day).

The main advantage of a decimal time system is that, since the base used to divide the time is the same as the one used to represent it, the representation of hours, minutes and seconds can be handled as a unified value. Therefore, it becomes simpler to interpret a timestamp and to perform conversions. For instance, 1^h23^m45^s is 1 decimal hour, 23 decimal minutes, and 45 decimal seconds, or 1.2345 decimal hours, or 123.45 decimal minutes or 12345 decimal seconds; 3 hours is 300 minutes or 30,000 seconds. This property also makes it straightforward to represent a timestamp as a fractional day, so that 2024-01-15.54321 can be interpreted as five decimal hours and 43 decimal minutes and 21 decimal seconds after the start of that day, or a fraction of 0.54321 (54.321%) through that day (which is shortly after traditional 13:00). It also adjusts well to digital time representation using epochs, in that the internal time representation can be used directly both for computation and for user-facing display.

🔗 Physics 🔗 Weather 🔗 Weather/Weather

A light pillar is an atmospheric optical phenomenon in which a vertical beam of light appears to extend above and/or below a light source. The effect is created by the reflection of light from tiny ice crystals that are suspended in the atmosphere or that comprise high-altitude clouds (e.g. cirrostratus or cirrus clouds). If the light comes from the Sun (usually when it is near or even below the horizon), the phenomenon is called a sun pillar or solar pillar. Light pillars can also be caused by the Moon or terrestrial sources, such as streetlights and erupting volcanoes.

🔗 United States 🔗 Computing 🔗 Marketing & Advertising 🔗 Microsoft 🔗 United States/American television

“Where do you want to go today?” was the title of Microsoft’s second global image advertising campaign. The broadcast, print and outdoor advertising campaign was launched in November 1994 through the advertising agency Wieden+Kennedy. The campaign had Microsoft spending $100 million through July 1995, of which $25 million would be spent during the holiday shopping season ending in December 1994.

Tony Kaye directed a series of television ads filmed in Hong Kong, Prague and New York City that showed a broad range of people using their PCs. The television ads were first broadcast in Australia on November 13, the following day in both the United States and Canada, with Britain, France and Germany seeing the spots in subsequent days. An eight-page print ad described the personal computer as “an open opportunity for everybody” that “[facilitates] the flow of information so that good ideas—wherever they come from—can be shared”, and was placed in mass-market magazines including National Geographic, Newsweek, People, Rolling Stone and Sports Illustrated.

The New York Times described the campaign as taking “a winsome, humanistic approach to demystifying technology”. However, the Times reported in August 1995 that the response to Microsoft’s campaign in the advertising trade press had been “lukewarm” and quoted Brad Johnson of Advertising Age as stating that “Microsoft is on version 1.0 in advertising. Microsoft is not standing still. It will improve its advertising.” Microsoft’s Steve Ballmer, then the firm’s executive vice president, acknowledged that the response to the campaign had been “chilly”.

In June 1999, Microsoft announced that it would be ending its nearly five-year-long relationship with Wieden+Kennedy, shifting $100 million (~$166 million in 2022) in billings to McCann Erickson Worldwide Advertising in a split that was described by The New York Times as mutual. Dan Wieden, president and chief creative officer of the advertising agency, characterized the relationship with Microsoft as “intense” and said that it had “run its course”.

🔗 Software 🔗 Software/Computing

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.