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π The Tennessee Valley Authority
The Tennessee Valley Authority (TVA) is a federally owned electric utility corporation in the United States. TVA's service area covers all of Tennessee, portions of Alabama, Mississippi, and Kentucky, and small areas of Georgia, North Carolina, and Virginia. While owned by the federal government, TVA receives no taxpayer funding and operates similarly to a private for-profit company. It is headquartered in Knoxville, Tennessee, and is the sixth-largest power supplier and largest public utility in the country.
The TVA was created by Congress in 1933 as part of President Franklin D. Roosevelt's New Deal. Its initial purpose was to provide navigation, flood control, electricity generation, fertilizer manufacturing, regional planning, and economic development to the Tennessee Valley, a region that had suffered from lack of infrastructure and even more extensive poverty during the Great Depression than other regions of the nation. TVA was envisioned both as a power supplier and a regional economic development agency that would work to help modernize the region's economy and society. It later evolved primarily into an electric utility. It was the first large regional planning agency of the U.S. federal government, and remains the largest.
Under the leadership of David E. Lilienthal, the TVA also became the global model for the United States' later efforts to help modernize agrarian societies in the developing world. The TVA historically has been documented as a success in its efforts to modernize the Tennessee Valley and helping to recruit new employment opportunities to the region. Historians have criticized its use of eminent domain and the displacement of over 125,000 Tennessee Valley residents to build the agency's infrastructure projects.
Discussed on
- "The Tennessee Valley Authority" | 2024-05-11 | 15 Upvotes 2 Comments
π Mariko Aoki Phenomenon
The Mariko Aoki phenomenon (ιζ¨γΎγγηΎθ±‘, Aoki Mariko genshΕ) is a Japanese expression referring to an urge to defecate that is suddenly felt after entering bookstores. The phenomenon's name derives from the name of the woman who mentioned the phenomenon in a magazine article in 1985. According to Japanese social psychologist Shozo Shibuya, the specific causes that trigger a defecation urge in bookstores are not yet clearly understood (as of 2014). There are also some who are skeptical about whether such a peculiar phenomenon really exists at all, and it is sometimes discussed as one type of urban myth.
The series of processes through which being in a bookstore leads to an awareness of a defecation urge is something that cannot be explained from a medical perspective as a single pathological concept, at least at present. According to a number of discussions on the topic, even if it can be sufficiently found that this phenomenon actually exists, it is a concept that would be difficult to be deemed a specific pathological entity (such as a "Mariko Aoki disease", for example). On the other hand, it is also a fact that a considerable number of the intellectuals (particularly clinicians) who discuss this phenomenon have adopted existing medical terminology such as from diagnostics and pathology. Borrowing from this approach, this article also uses expressions from existing medical terminology for convenience.
Discussed on
- "The Mariko Aoki Phenomenon" | 2024-05-11 | 15 Upvotes 2 Comments
- "Mariko Aoki phenomenon" | 2018-12-30 | 11 Upvotes 2 Comments
π Scientific Consensus on Climate Change
There is a nearly unanimous scientific consensus that the Earth has been consistently warming since the start of the Industrial Revolution, that the rate of recent warming is largely unprecedented,:β8β:β11β and that this warming is mainly the result of a rapid increase in atmospheric carbon dioxide (CO2) caused by human activities. The human activities causing this warming include fossil fuel combustion, cement production, and land use changes such as deforestation,:β10β11β with a significant supporting role from the other greenhouse gases such as methane and nitrous oxide.:β7β This human role in climate change is considered "unequivocal" and "incontrovertible".:β4β:β4β
Nearly all actively publishing climate scientists say humans are causing climate change. Surveys of the scientific literature are another way to measure scientific consensus. A 2019 review of scientific papers found the consensus on the cause of climate change to be at 100%, and a 2021 study concluded that over 99% of scientific papers agree on the human cause of climate change. The small percentage of papers that disagreed with the consensus often contain errors or cannot be replicated.
The evidence for global warming due to human influence has been recognized by the national science academies of all the major industrialized countries. In the scientific literature, there is a very strong consensus that global surface temperatures have increased in recent decades and that the trend is caused by human-induced emissions of greenhouse gases. No scientific body of national or international standing disagrees with this view. A few organizations with members in extractive industries hold non-committal positions, and some have tried to persuade the public that climate change is not happening, or if the climate is changing it is not because of human influence, attempting to sow doubt in the scientific consensus.
π Object Linking and Embedding
Object Linking & Embedding (OLE) is a proprietary technology developed by Microsoft that allows embedding and linking to documents and other objects. For developers, it brought OLE Control Extension (OCX), a way to develop and use custom user interface elements. On a technical level, an OLE object is any object that implements the IOleObject interface, possibly along with a wide range of other interfaces, depending on the object's needs.
Discussed on
- "Object Linking and Embedding" | 2024-05-07 | 39 Upvotes 37 Comments
π Laudatio Turiae
Laudatio Turiae ("In praise of Turia") is a tombstone engraved with a carved epitaph that is a husband's eulogy of his wife. It was made in the late 1st century BC. It portrays the love of a husband for his loyal wife.
Discussed on
- "Laudatio Turiae" | 2024-05-06 | 103 Upvotes 8 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 They Live
They Live is a 1988 American science fiction action horror film written and directed by John Carpenter, based on the 1963 short story "Eight O'Clock in the Morning" by Ray Nelson. Starring Roddy Piper, Keith David, and Meg Foster, the film follows an unnamed drifter who discovers through special sunglasses that the ruling class are aliens concealing their appearance and manipulating people to consume, breed, and conform to the status quo via subliminal messages in mass media.
Having acquired the film rights to the Nelson-penned short story prior to the production of They Live, Carpenter used the story as the basis for the screenplay's structure, which he wrote under the pseudonym "Frank Armitage". Carpenter has stated that the themes of They Live stemmed from his dissatisfaction with the economic policies of then-U.S. President Ronald Reagan, as well as what Carpenter saw as increasing commercialization in both popular culture and politics.
They Live was a minor success upon release, debuting at #1 at the North American box office. It initially received negative reviews from critics, who lambasted its social commentary, writing, and acting; however, it later gained a cult following and experienced a significantly more favorable critical reception. It is now regarded by many as one of Carpenter's best films. The film has also entered the pop culture lexicon, notably having a lasting effect on street art (particularly that of Shepard Fairey).
Discussed on
- "They Live" | 2024-05-05 | 117 Upvotes 81 Comments
π Explosively pumped flux compression generator
An explosively pumped flux compression generator (EPFCG) is a device used to generate a high-power electromagnetic pulse by compressing magnetic flux using high explosive.
An EPFCG only ever generates a single pulse as the device is physically destroyed during operation. They require a starting current pulse to operate, usually supplied by capacitors.
Explosively pumped flux compression generators are used to create ultrahigh magnetic fields in physics and materials science research and extremely intense pulses of electric current for pulsed power applications. They are being investigated as power sources for electronic warfare devices known as transient electromagnetic devices that generate an electromagnetic pulse without the costs, side effects, or enormous range of a nuclear electromagnetic pulse device.
The first work on these generators was conducted by the VNIIEF center for nuclear research in Sarov in the Soviet Union at the beginning of the 1950s followed by Los Alamos National Laboratory in the United States.
Discussed on
- "Explosively pumped flux compression generator" | 2024-05-04 | 27 Upvotes 13 Comments
π Curse of dimensionality
The curse of dimensionality refers to various phenomena that arise when analyzing and organizing data in high-dimensional spaces (often with hundreds or thousands of dimensions) that do not occur in low-dimensional settings such as the three-dimensional physical space of everyday experience. The expression was coined by Richard E. Bellman when considering problems in dynamic programming.
Cursed phenomena occur in domains such as numerical analysis, sampling, combinatorics, machine learning, data mining and databases. The common theme of these problems is that when the dimensionality increases, the volume of the space increases so fast that the available data become sparse. This sparsity is problematic for any method that requires statistical significance. In order to obtain a statistically sound and reliable result, the amount of data needed to support the result often grows exponentially with the dimensionality. Also, organizing and searching data often relies on detecting areas where objects form groups with similar properties; in high dimensional data, however, all objects appear to be sparse and dissimilar in many ways, which prevents common data organization strategies from being efficient.
Discussed on
- "Curse of dimensionality" | 2012-05-30 | 89 Upvotes 25 Comments
π Goodyear Inflatoplane
The Goodyear Inflatoplane was an inflatable experimental aircraft made by the Goodyear Aircraft Company, a subsidiary of Goodyear Tire and Rubber Company, well known for the Goodyear blimp. Although it seemed an improbable project, the finished aircraft proved to be capable of meeting its design objectives, although orders were never forthcoming from the military. A total of 12 prototypes were built between 1956 and 1959, and testing continued until 1972, when the project was finally cancelled.
Discussed on
- "Goodyear Inflatoplane" | 2024-05-02 | 148 Upvotes 71 Comments
- "Goodyear Inflatoplane" | 2019-10-14 | 108 Upvotes 27 Comments