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🔗 Mathematics 🔗 Statistics

Benford's law, also called the Newcomb–Benford law, the law of anomalous numbers, or the first-digit law, is an observation about the frequency distribution of leading digits in many real-life sets of numerical data. The law states that in many naturally occurring collections of numbers, the leading digit is likely to be small. For example, in sets that obey the law, the number 1 appears as the leading significant digit about 30% of the time, while 9 appears as the leading significant digit less than 5% of the time. If the digits were distributed uniformly, they would each occur about 11.1% of the time. Benford's law also makes predictions about the distribution of second digits, third digits, digit combinations, and so on.

The graph to the right shows Benford's law for base 10, one of infinitely many cases of a generalized law regarding numbers expressed in arbitrary (integer) bases, which rules out the possibility that the phenomenon might be an artifact of the base 10 number system. Further generalizations were published by Hill in 1995 including analogous statements for both the nth leading digit as well as the joint distribution of the leading n digits, the latter of which leads to a corollary wherein the significant digits are shown to be a statistically dependent quantity. ).

It has been shown that this result applies to a wide variety of data sets, including electricity bills, street addresses, stock prices, house prices, population numbers, death rates, lengths of rivers, and physical and mathematical constants. Like other general principles about natural data—for example the fact that many data sets are well approximated by a normal distribution—there are illustrative examples and explanations that cover many of the cases where Benford's law applies, though there are many other cases where Benford's law applies that resist a simple explanation. It tends to be most accurate when values are distributed across multiple orders of magnitude, especially if the process generating the numbers is described by a power law (which are common in nature).

The law is named after physicist Frank Benford, who stated it in 1938 in a paper titled "The Law of Anomalous Numbers", although it had been previously stated by Simon Newcomb in 1881.

🔗 Physics 🔗 Energy

A traveling-wave reactor (TWR) is a proposed type of nuclear fission reactor that can convert fertile material into usable fuel through nuclear transmutation, in tandem with the burnup of fissile material. TWRs differ from other kinds of fast-neutron and breeder reactors in their ability to use fuel efficiently without uranium enrichment or reprocessing, instead directly using depleted uranium, natural uranium, thorium, spent fuel removed from light water reactors, or some combination of these materials. The concept is still in the development stage and no TWRs have ever been built.

The name refers to the fact that fission remains confined to a boundary zone in the reactor core that slowly advances over time. TWRs could theoretically run self-sustained for decades without refueling or removing spent fuel.

🔗 Physics

Separation of isotopes by laser excitation (SILEX) is a process for isotope separation that is being investigated to produce enriched uranium on an industrial scale using lasers. It was developed in the 1990s and is a variant of molecular laser isotope separation (MLIS). For uranium, it uses a cold molecular beam with UF₆ in a carrier cas, in which the ²³⁵UF₆ is selectively excited by an infrared laser near 16 µm. But in contrast to earlier MLIS techniques developed since the 1970s, it does not dissociate the molecule.

🔗 Biography 🔗 Lists 🔗 Ethnic groups 🔗 Jewish history 🔗 Israel 🔗 Jewish culture 🔗 Awards

Nobel Prizes have been awarded to over 900 individuals, of whom at least 20% were Jews although the Jewish population comprises less than 0.2% of the world's population. Various theories have been proposed to explain this phenomenon, which has received considerable attention. Israeli academics Dr. Elay Ben-Gal and Professor Yeshayahu Leibowitz, curious about the phenomenon, started to form an encyclopedia of Jewish Nobel laureates and interview as many as possible about their life and work.

Jews have been recipients of all six awards. The first Jewish recipient, Adolf von Baeyer, was awarded the prize in Chemistry in 1905. As of 2019, the most recent Jewish recipient was economics laureate Michael Kremer.

Jewish laureates Elie Wiesel and Imre Kertész survived the extermination camps during the Holocaust, while François Englert survived by being hidden in orphanages and children's homes. Others, such as Walter Kohn, Otto Stern, Albert Einstein, Hans Krebs and Martin Karplus had to flee Nazi Germany to avoid persecution. Still others, including Rita Levi-Montalcini, Herbert Hauptman, Robert Furchgott, Arthur Kornberg, and Jerome Karle experienced significant antisemitism in their careers.

Arthur Ashkin, a 96-year-old American Jew was, at the time of his award, the oldest person to receive a Nobel Prize.

🔗 Telecommunications 🔗 Systems 🔗 Business 🔗 Systems/Operations research

Virtual queuing is a concept used in inbound call centers. Call centers use an Automatic Call Distributor (ACD) to distribute incoming calls to specific resources (agents) in the center. ACDs hold queued calls in First In, First Out order until agents become available. From the caller’s perspective, without virtual queuing they have only two choices: wait until an agent resource becomes available, or abandon (hang up) and try again later. From the call center’s perspective, a long queue results in many abandoned calls, repeat attempts, and customer dissatisfaction.

Virtual queuing systems allow customers to receive callbacks instead of waiting in an ACD queue. This solution is analogous to the “fast lane” option (e.g. Disney's FASTPASS) used at amusement parks, which often have long queues to ride the various coasters and attractions. A computerized system allows park visitors to secure their place in a “virtual queue” rather than waiting in a physical queue.

In the brick-and-mortar retail and business world, virtual queuing for large organizations similar to the FASTPASS and Six Flags' Flash Pass, have been in use successfully since 1999 and 2001 respectively. For small businesses, the virtual queue management solutions come in two types: (a) based on SMS text notification and (b) apps on smartphones and tablet devices, with in-app notification and remote queue status views.

🔗 Germany 🔗 Disaster management 🔗 European history 🔗 Royalty and Nobility 🔗 Germany/Holy Roman Empire

In July 1184, Henry VI, King of Germany (later Holy Roman Emperor), held court at a Hoftag in the Petersberg Citadel in Erfurt. On the morning of 26 July, the combined weight of the assembled nobles caused the wooden second story floor of the building to collapse and most of them fell through into the latrine cesspit below the ground floor, where about 60 of them drowned in liquid excrement. This event is called Erfurter Latrinensturz (lit. 'Erfurt latrine fall') in several German sources.

🔗 Architecture

The Frankfurt kitchen was a milestone in domestic architecture, considered the forerunner of modern fitted kitchens, for it realised for the first time a kitchen built after a unified concept, designed to enable efficient work and to be built at low cost. It was designed in 1926 by Austrian architect Margarete Schütte-Lihotzky for architect Ernst May's social housing project New Frankfurt in Frankfurt, Germany. Some 10,000 units were built in the late 1920s in Frankfurt.

🔗 Soviet Union 🔗 Military history 🔗 Military history/Military science, technology, and theory 🔗 Military history/World War II 🔗 Military history/Russian, Soviet and CIS military history

Deep operation (Russian: Глубокая операция, glubokaya operatsiya), also known as Soviet Deep Battle, was a military theory developed by the Soviet Union for its armed forces during the 1920s and 1930s. It was a tenet that emphasized destroying, suppressing or disorganizing enemy forces not only at the line of contact, but throughout the depth of the battlefield.

The term comes from Vladimir Triandafillov, an influential military writer, who worked with others to create a military strategy with its own specialized operational art and tactics. The concept of deep operations was a national strategy, tailored to the economic, cultural and geopolitical position of the Soviet Union. In the aftermath of several failures or defeats in the Russo-Japanese War, First World War and Polish–Soviet War, the Soviet High Command (Stavka) focused on developing new methods for the conduct of war. This new approach considered military strategy and tactics, but also introduced a new intermediate level of military art: operations. The Soviet Union was the first country to officially distinguish the third level of military thinking which occupied the position between strategy and tactics.

Using these templates, the Soviets developed the concept of deep battle and by 1936 it had become part of the Red Army Field Regulations. Deep operations had two phases: the tactical deep battle, followed by the exploitation of tactical success, known as the conduct of deep battle operations. Deep battle envisaged the breaking of the enemy's forward defenses, or tactical zones, through combined arms assaults, which would be followed up by fresh uncommitted mobile operational reserves sent to exploit the strategic depth of an enemy front. The goal of a deep operation was to inflict a decisive strategic defeat on the enemy's logistical abilities and render the defence of their front more difficult, impossible—or, indeed, irrelevant. Unlike most other doctrines, deep battle stressed combined arms cooperation at all levels: strategic, operational, and tactical.

🔗 Biography 🔗 India 🔗 India/Bihar

Dashrath Manjhi (1934 – 17 August 2007), also known as Mountain Man, was a laborer in Gehlaur village, near Gaya in Bihar, India, who carved a path 110 m long (360 ft), 9.1 m (30 ft) wide and 7.7 m (25 ft) deep through a ridge of hills using only a hammer and chisel. After 22 years of work, Dashrath shortened travel between the Atri and Wazirganj blocks of Gaya town from 55 km to 15 km.

🔗 United States 🔗 Biography 🔗 Law 🔗 United States/Ohio

Michael A. Cicconetti (born 1951) is a retired Municipal Court judge who presided in Painesville, Lake County, Ohio, United States, dispensing a unique brand of what he calls creative justice. The judge often left the choice of penalty to the defendant, who was faced with spending time in jail or undergoing one of Cicconetti's unusual punishments. These often involved placing the defendant in a similar position to that of the defendant's victim at the time of the crime.

Cicconetti's first creative sentence, which involved a violation relating to a stopped school bus, occurred in the mid-1990s. Famously he offered 26-year-old Ohio housewife Michelle Murray the option (in return for a reduced prison sentence) of spending a night in the woods for abandoning 35 kittens in a forest in wintertime; he said: "You don't do that. You don't leave these poor little animals out and, yes, I wanted to set an example for her future conduct or anybody else who was contemplating doing such a thing". On other occasions he ordered noisy neighbors to spend a day of silence in the forest or listen to classical music instead of rock. In all cases the judge attempted to place a link between the perpetrated offense and its punishment.

Due in part to the popularity of his actions, he won the presidency of the American Judges Association. He attributes his unusual approach to his background. He is an Eagle Scout, earning the award in 1964, as a member of Scout Troop 64 in Painesville, Ohio. He was the oldest of nine siblings who had to work on ore boats throughout the Great Lakes as a deckhand and deckwatch to fund himself through college. After graduating from St. Leo University, he became Clerk of the Painesville Municipal Court while attending Cleveland State University Law School at night.

Many of the victims, but also defendants, claim that his unusual approach has helped them to cope with their problems and the judge is reportedly inundated with letters from his admirers. Furthermore, where the national recidivism (repeat offender) rate is over 75%, the rate in Judge Cicconetti's court was just 10%.

His philosophy is exemplified by the following two quotations:

When you engage people and praise them for their good behavior, not unlike children, it helps their self-esteem. My judicial philosophy is really not that much different from a parental philosophy. I have five children. You can paddle them or spank them but what do you gain? Most people want to be good but for little obstacles or habits. We have to change the habits and remove the obstacles. That's our job.

Sentences such as Cicconetti's are becoming more popular across the United States, and one judge has cited him specifically as being the influence for one of her own sentences.

In February 2019 Cicconetti announced that he planned to retire later in the year. He retired from being a judge on September 20, 2019.