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🔗 Mathematics 🔗 Germany 🔗 Military history 🔗 Statistics 🔗 Military history/Intelligence 🔗 Military history/World War II 🔗 Military history/German military history 🔗 Military history/European military history

In the statistical theory of estimation, the German tank problem consists of estimating the maximum of a discrete uniform distribution from sampling without replacement. In simple terms, suppose we have an unknown number of items which are sequentially numbered from 1 to N. We take a random sample of these items and observe their sequence numbers; the problem is to estimate N from these observed numbers.

The problem can be approached using either frequentist inference or Bayesian inference, leading to different results. Estimating the population maximum based on a single sample yields divergent results, whereas estimation based on multiple samples is a practical estimation question whose answer is simple (especially in the frequentist setting) but not obvious (especially in the Bayesian setting).

The problem is named after its historical application by Allied forces in World War II to the estimation of the monthly rate of German tank production from very few data. This exploited the manufacturing practice of assigning and attaching ascending sequences of serial numbers to tank components (chassis, gearbox, engine, wheels), with some of the tanks eventually being captured in battle by Allied forces.

🔗 Biography 🔗 Mathematics 🔗 Statistics 🔗 Systems 🔗 Biography/science and academia 🔗 Systems/Visualization 🔗 Graphic design

Edward Rolf Tufte (; born March 14, 1942) is an American statistician and professor emeritus of political science, statistics, and computer science at Yale University. He is noted for his writings on information design and as a pioneer in the field of data visualization.

🔗 Journalism 🔗 Scientology 🔗 Crime and Criminal Biography

Operation Freakout, also known as Operation PC Freakout, was a Church of Scientology covert plan intended to have the U.S. author and journalist Paulette Cooper imprisoned or committed to a psychiatric hospital. The plan, undertaken in 1976 following years of church-initiated lawsuits and covert harassment, was meant to eliminate the perceived threat that Cooper posed to the church and obtain revenge for her publication in 1971 of a highly critical book, The Scandal of Scientology. The Federal Bureau of Investigation discovered documentary evidence of the plot and the preceding campaign of harassment during an investigation into the Church of Scientology in 1977, eventually leading to the church compensating Cooper in an out-of-court settlement.

🔗 Technology 🔗 India 🔗 Metalworking

Wootz steel is a crucible steel characterized by a pattern of bands. These bands are formed by sheets of microscopic carbides within a tempered martensite or pearlite matrix in higher carbon steel, or by ferrite and pearlite banding in lower carbon steels. It was a pioneering steel alloy developed in Southern India (Tamilakam present day Tamil Nadu and Kerala) and Sri Lanka in the 6th century BC and exported globally. It was also known in the ancient world by many different names including ukku, Hindvi steel, Hinduwani steel, Teling steel and seric iron.

🔗 Lists 🔗 Plants 🔗 Forestry

The following is a list of individual trees. Trees listed here are regarded as important or specific by their historical, national, locational, natural or mythological context. The list includes actual trees located throughout the world, as well as trees from myths and religions.

🔗 Intel

Intel's Skulltrail is an enthusiast gaming platform that was released on February 19, 2008. It is based on the company's 5400 "Seaburg" workstation chipset. The primary difference between Skulltrail and Intel's current and past enthusiast chipsets is a dual CPU socket design that allows two processors to operate on the same motherboard. Therefore, Skulltrail can operate eight processing cores on one system. The platform supports two Core 2 Extreme QX9775 processors (commonly mistaken for the Core 2 Extreme QX9770, which is the LGA775 counterpart), which operate at 3.2 GHz.

Skulltrail was one of the first platforms to support SLI on chipsets not designed by Nvidia. It achieves this by including two NVIDIA nForce 100 PCIe 1.1 switch (two x16 to one x16) chips. The implementation of SLI supports Quad SLI technology, which is achieved through the use of two dual-GPU graphics cards from NVIDIA, including the GeForce 9800 GX2. This gives a total of four graphics processors. Owners of Skulltrail systems can also make use of up to four ATI graphics cards using ATI CrossFireX technology, which made SkullTrail the only platform (other than Intel X58 and P55 Chipset) to support both SLI and CrossFire with public drivers at the time of release. The HP Firebird 803 also supported SLI on one (proprietary, MXM) motherboard at the time, but the drivers were special and only available for Firebird hardware.

🔗 Star Trek

Star Trek Continues is an American fan-made web series set in the Star Trek universe. Produced by the nonprofit charity Trek Continues, Inc. and Dracogen, and initially co-produced by Far from Home LLC and Farragut Films, the series consists of 11 episodes released between 2013 and 2017. The series is an unofficial direct continuation of Star Trek: The Original Series, and emulates its visual and storytelling features to achieve the same look and feel. Those who made the show have said in interviews that the intent was to finish the original five-year mission of the show, and this is borne out in the plot lines of the final two episodes.

The series was fan-created and all episodes were released to watch on YouTube. As with all such Star Trek fan productions, use of copyrighted and trademarked properties from the original series was allowed so long as the production was not commercial. A portion of the funds necessary to produce the episodes was raised through successful Kickstarter and Indiegogo campaigns, to which thousands of backers contributed.

Star Trek Continues won a Webby Award for "People's Choice – Long Form Drama" in 2016, a Geekie Award for "Best Web Series" in 2014, and numerous Telly and Accolade awards. The series was very positively received by critics, who praised the quality of the production and stated that the show set a new standard for Star Trek fan films.

After the 11th episode was released in late 2017, the Star Trek Continues series ended.

🔗 United States/U.S. Government 🔗 United States

"Stellar Wind" (or "Stellarwind") was the code name of a warrantless surveillance program begun under the George W. Bush administration's President's Surveillance Program (PSP). The National Security Agency (NSA) program was approved by President Bush shortly after the September 11, 2001 attacks and was revealed by Thomas Tamm to The New York Times in 2004. Stellar Wind was a prelude to new legal structures that allowed President Bush and President Barack Obama to reproduce each of those programs and expand their reach.

🔗 United States 🔗 Politics 🔗 Politics/American politics 🔗 Elections and Referendums 🔗 United States/U.S. presidential elections

The National Popular Vote Interstate Compact (NPVIC) is an agreement among a group of U.S. states and the District of Columbia to award all their electoral votes to whichever presidential candidate wins the overall popular vote in the 50 states and the District of Columbia. The compact is designed to ensure that the candidate who receives the most votes nationwide is elected president, and it would come into effect only when it would guarantee that outcome. As of March 2020, it has been adopted by fifteen states and the District of Columbia. Together, they have 196 electoral votes, which is 36% of the Electoral College and 73% of the 270 votes needed to give the compact legal force. Certain legal questions, however, may affect implementation of the compact.

🔗 Aviation 🔗 Aviation/aircraft

The Boom XB-1 Baby Boom is a one-third-scale supersonic demonstrator designed by Boom Technology, designed as part of development of the Boom Overture supersonic transport airliner. It is planned to maintain Mach 2.2, with over 1,000 nmi (1,900 km) of range. Powered by three 4,300 lbf (19 kN) dry General Electric CJ610s, it is expected to be flight tested in 2020.