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Daejongism
Daejongism (Korean: 대종교, romanized: 大倧敎 Daejonggyo or Taejongkyo, "religion of the Divine Progenitor" or "great ancestral religion":192) or Dangunism (Korean: 단군교, romanized: 檀君敎 Dangungyo or Tangunkyo, "religion of Dangun") is the name of a number of religious movements within the framework of Korean shamanism, focused on the worship of Dangun (or Tangun). There are around seventeen of these groups, the main one of which was founded in Seoul in 1909 by Na Cheol (나철, 1864-1916). Dangunists believe their mythos to be the authentic Korean native religion, that was already around as Gosindo (古神道, "way of the Ancestral God" or "ancient way of God") at the time of the first Mongol invasions of Korea, and that was revived as "Daejongism" (Daejonggyo) just at the start of the Japanese occupation. The religion was suppressed during the Japanese rule. The religion believes in one God manifested in three persons, whose earthly incarnation was the legendary king Dangun, who ruled over a Korean empire around 5000 years ago. Its main tenet is that the Koreans have their own God and they have no need to worship foreign gods. Its emphasis is on the national identity and unity of the Korean people (known as minjok) and as such has been associated with Korean nationalism (and sometimes ultranationalism).:193 Daejongism does not focus so much on institutions or rituals but rather on central doctrines and associated mythologies, so that it is more definable as a creed or a faith system rather than an organized religion. In the decade of 1910-1920, it had its major growth, reaching an estimated following of 400,000. Its popularity was largely due to its efforts on behalf of Korean independence. Once this aim was achieved, its membership declined, although Daejongism acquired a reputation for its educational and scholarly institutions, which published in particular monumental works about Korea's struggle for independence and Daejongism's contribution to it. A 1995 census found that fewer than 10,000 Koreans claimed to follow the religion, although Korean census figures systematically underestimate the number of followers of new religions, who are often reluctant to indicate their religious affiliation.
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  • 01 Dec 2022
Biography
Caroline Pratt
Caroline Pratt (May 13, 1867 – June 6, 1954[1] ) was an American social thinker and progressive educational reformer whose ideas were influential in educational reform, policy, and practice.[2] Pratt is known as the founder of City and Country School in the Greenwich Village section of the borough of Manhattan in New York City ; the inventor of unit blocks;[3][4][5] and as the author of I Le
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  • 01 Dec 2022
Topic Review
Redundancy Principle
The redundancy principle in biology expresses the need of many copies of the same entity (cells, molecules, ions) to fulfill a biological function. Examples are numerous: disproportionate numbers of spermatozoa during fertilization compared to one egg, large number of neurotransmitters released during neuronal communication compared to the number of receptors, large numbers of released calcium ions during transient in cells and many more in molecular and cellular transduction or gene activation and cell signaling. This redundancy is particularly relevant when the sites of activation is physically separated from the initial position of the molecular messengers. The redundancy is often generated for the purpose of resolving the time constraint of fast-activating pathways. It can be expressed in terms of the theory of extreme statistics to determine its laws and quantify how shortest paths are selected. The main goal is to estimate these large numbers from physical principles and mathematical derivations. When large distance separate the source and the target (a small activation site), the redundancy principle explains that this geometrical gap can be compensated by large number. Had nature used less copies than normal, activation would have taken a much longer time, as finding a small target by chance is a rare events and falls into narrow escape problems.
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  • 01 Dec 2022
Biography
Gerhard Drolshagen
Gerhard Drolshagen (born July, 1953) is a German physicist at the University of Oldenburg, Germany, specializing in space environment and near-Earth objects (NEO). He has been a staff member at the European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Noordwijk, The Netherlands (1987–2016) and is known for his work in space environment, near-Earth objects (NEO) an
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  • 01 Dec 2022
Topic Review
Disruptive Mood Dysregulation Disorder
Disruptive mood dysregulation disorder (DMDD) is a mental disorder in children and adolescents characterized by a persistently irritable or angry mood and frequent temper outbursts that are disproportionate to the situation and significantly more severe than the typical reaction of same-aged peers. DMDD was added to the DSM-5 as a type of depressive disorder diagnosis for youths. The symptoms of DMDD resemble those of attention deficit hyperactivity disorder (ADHD), oppositional defiant disorder (ODD), anxiety disorders, and childhood bipolar disorder. DMDD first appeared as a disorder in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) in 2013 and is classified as a mood disorder. Treatments include medication to manage mood symptoms as well as individual and family therapy to address emotion-regulation skills. Children with DMDD are at risk for developing depression and anxiety later in life.
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  • 01 Dec 2022
Topic Review
Mars Helicopter Ingenuity
Ingenuity (also known as the Mars Helicopter) is a robotic helicopter that is planned to be used to test the technology to scout interesting targets on Mars, and help plan the best driving route for future Mars rovers. The small drone helicopter is planned for deployment in 2021 from the Perseverance rover as part of the Mars 2020 mission. It is expected to fly up to five times during its 30-day test campaign, early in the rover's mission, as it is primarily a technology demonstration. Each flight is planned to take no more than three minutes, at altitudes ranging from 3 to 10 m above the ground. It could potentially cover a distance of up to 300 metres (980 ft) per flight. It can use autonomous control and communicate with the Perseverance rover directly after each landing. If it works as expected, NASA could build on the design for future Mars aerial missions. MiMi Aung is the project lead. Other contributors include AeroVironment Inc., NASA Ames Research Center, and NASA Langley Research Center.
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  • 01 Dec 2022
Topic Review
Ocean Surface Topography Mission
The Ocean Surface Topography Mission (OSTM) on the Jason-2 satellite is an international Earth observation satellite mission that continues the sea surface height measurements begun in 1992 by the joint NASA/CNES TOPEX/Poseidon mission and followed by the NASA/CNES Jason-1 mission launched in 2001.
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  • 01 Dec 2022
Topic Review
Strychnine Poisoning
Strychnine poisoning can be fatal to humans and other animals and can occur by inhalation, swallowing or absorption through eyes or mouth. It produces some of the most dramatic and painful symptoms of any known toxic reaction, making it quite noticeable and a common choice for assassinations and poison attacks. For this reason, strychnine poisoning is often portrayed in literature and film, such as the murder mysteries written by Agatha Christie. The probable lethal oral dose in humans is 1.5 to 2 mg/kg. Similarly, the median lethal dose for dogs, cats, and rats ranges from 0.5 to 2.35 mg/kg.
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  • 01 Dec 2022
Topic Review
Introduction to the Mathematics of General Relativity
The mathematics of general relativity is complex. In Newton's theories of motion, an object's length and the rate at which time passes remain constant while the object accelerates, meaning that many problems in Newtonian mechanics may be solved by algebra alone. In relativity, however, an object's length and the rate at which time passes both change appreciably as the object's speed approaches the speed of light, meaning that more variables and more complicated mathematics are required to calculate the object's motion. As a result, relativity requires the use of concepts such as vectors, tensors, pseudotensors and curvilinear coordinates. For an introduction based on the example of particles following circular orbits about a large mass, nonrelativistic and relativistic treatments are given in, respectively, Newtonian motivations for general relativity and Theoretical motivation for general relativity.
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  • 01 Dec 2022
Topic Review
Meet the Flintstones
"Meet the Flintstones", also worded as "(Meet) The Flintstones", is the theme song of the 1960s animated television series The Flintstones. Composed in 1961 by Hoyt Curtin, Joseph Barbera and William Hanna, it is one of the most popular and best known of all theme songs, with its catchy lyrics "Flintstones, meet the Flintstones, they're the modern Stone Age family".
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  • 01 Dec 2022
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