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Korea Meteorological Administration
The Korea Meteorological Administration () (KMA) is the national meteorological service of the Republic of Korea. The service started in 1904 joining the WMO in 1956. Numerical Weather Prediction is performed using the Unified Model software suite. History The current Administration was established in 1990. Temporary observatories set up in 1904 in Busan, Incheon, Mokpo and elsewhere were precursors to the current KMA. The Central Meteorological Office (CMO) was established in August 1949. In April 1978, CMO was renamed the Korea Meteorological Service(KMS). In 1999, the Administration introduced a meteorological supercomputer for forecasting. As of November 2021, supercomputers ''Guru'' and ''Maru'' ranked 27th and 28th respectively in the world. In 2010, the KMA launched South Korea’s first geostationary meteorological satellite, the Communication, Ocean and Meteorological Satellite (COMS), also known as Chollian. Chollian started its official operation in 2011. The Seoul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia, constituting the southern part of the Korea, Korean Peninsula and sharing a Korean Demilitarized Zone, land border with North Korea. Its western border is formed by the Yellow Sea, while its eastern border is defined by the Sea of Japan. South Korea claims to be the sole legitimate government of the entire peninsula and List of islands of South Korea, adjacent islands. It has a Demographics of South Korea, population of 51.75 million, of which roughly half live in the Seoul Capital Area, the List of metropolitan areas by population, fourth most populous metropolitan area in the world. Other major cities include Incheon, Busan, and Daegu. The Korean Peninsula was inhabited as early as the Lower Paleolithic period. Its Gojoseon, first kingdom was noted in Chinese records in the early 7th century BCE. Following the unification of the Three Kingdoms of Korea into Unified Silla, Silla and Balhae in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enterprise, Alabama
Enterprise is a city in the southeastern part of Coffee County and the southwestern part of Dale County in Southeastern Alabama, United States. Its population was 28,711 at the 2020 census. Enterprise is the primary city of the Enterprise micropolitan statistical area (with the portion of the city in Dale County part of the Ozark micropolitan statistical area). It was originally a part of Enterprise–Ozark micropolitan area before being split; for a longer while it was originally part of the Dothan-Enterprise-Ozark combined statistical area but is now its own separate primary statistical area in later censuses. Enterprise is famous for the Boll Weevil Monument, a large monument of a woman holding a boll weevil, in the middle of Main Street. The city erected the statue because the destruction of the cotton crop by the boll weevil had led to agricultural diversity, starting with peanuts and more prosperity than had ever come from cotton alone. It is the only statue to an ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seoul
Seoul (; ; ), officially known as the Seoul Special City, is the Capital city, capital and largest metropolis of South Korea.Before 1972, Seoul was the ''de jure'' capital of the North Korea, Democratic People's Republic of Korea (North Korea) as stated iArticle 103 of the Constitution of North Korea, 1948 constitution. According to the 2020 census, Seoul has a population of 9.9 million people, and forms the heart of the Seoul Capital Area with the surrounding Incheon metropolis and Gyeonggi Province, Gyeonggi province. Considered to be a global city and rated as an Alpha – City by Globalization and World Cities Research Network (GaWC), Seoul was the world's List of cities by GDP, fourth largest metropolitan economy in 2014, following Tokyo, New York City and Los Angeles. Seoul was rated Asia's most livable city with the second highest quality of life globally by Arcadis in 2015, with a List of South Korean regions by GDP, GDP per capita (PPP) of around $40,000. With ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dongjak District
Dongjak District (Dongjak-gu) is one of the 25 '' gu'' that make up the city of Seoul, South Korea. Its name was derived from the Dongjaegi Naruteo Ferry, on the Han River which borders the district to the north. It was the 17th ''gu'' created in Seoul, after being separated from Gwanak District on 1 April 1980. Administrative divisions Dongjak District is divided into 15 ''dong'': *Daebang-dong * Heukseok-dong (all of this dong was combined in January 2008) * Noryangjin-dong 1, 2 ( Bon-dong was combined with Noryangjin 1-dong in September 2008) * Sadang-dong 1, 2, 3, 4, 5 ( Dongjak-dong was combined with Sadang 2-dong in September 2008) * Sangdo-dong 1, 2, 3, 4 (2 and 5 dong were combined in January 2008) * Sindaebang-dong 1, 2 Education Dongjak District is home to Chongshin University, the Seoul campus of Chung-Ang University, and Soongsil University. Noryangjin-dong, especially near Noryangjin Station is known for private institutes or Hagwons, for college admission ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daebang-dong
Daebang-dong is a ''dong'', neighbourhood of Dongjak-gu in Seoul, South Korea. History See also *Administrative divisions of South Korea South Korea is made up of 17 first-tier administrative divisions: 6 metropolitan cities (''gwangyeoksi'' ), 1 special city (''teukbyeolsi'' ), 1 special self-governing city (''teukbyeol-jachisi'' ), and 9 provinces ('' do'' ), including one ... References External linksMap and statistics of Dongjak-gu Neighbourhoods of Dongjak District {{Seoul-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weather Radar
Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the precipitation. Both types of data can be analyzed to determine the structure of storms and their potential to cause severe weather. During World War II, radar operators discovered that weather was causing echoes on their screen, masking potential enemy targets. Techniques were developed to filter them, but scientists began to study the phenomenon. Soon after the war, surplus radars were used to detect precipitation. Since then, weather radar has evolved on its own and is now used by national weather services, research departments in universities, and in television stations' weather departments. Raw images are routinely used and specialize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klystron
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian,Pond, Norman H. "The Tube Guys". Russ Cochran, 2008 p.31-40 which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television transmitters, satellite communication, radar transmitters, and to generate the drive power for modern particle accelerators. In a klystron, an electron beam interacts with radio waves as it passes through resonant cavities, metal boxes along the length of a tube. The electron beam first passes through a cavity to which the input signal is applied. The energy of the electron beam amplifies the signal, and the amplified signal is taken from a cavity at the other end of the tube. The output signal can be coupled back into the input c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S-band
The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave radio band, band of the electromagnetic spectrum covering frequency, frequencies from 2 to 4 gigahertz (GHz). Thus it crosses the conventional boundary between the Ultra high frequency, UHF and Super high frequency, SHF bands at 3.0 GHz. The S band is used by airport surveillance radar for air traffic control, weather radar, surface ship radar, and some communications satellites, especially those used by NASA to communicate with the Space Shuttle and the International Space Station. The 10 cm radar short-band ranges roughly from 1.55 to 5.2 GHz. The S band also contains the 2.4–2.483 GHz ISM band, widely used for low power unlicensed microwave devices such as cordless phones, wireless headphones (Bluetooth), wireless networking (WiFi), garage door openers, keyless entry, keyless vehicle locks, baby monitors as well as for medical diath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enterprise Electronics Corporation
Enterprise Electronics Corporation or EEC is an Alabama-based commercial weather radar system company, founded in 1971. EEC has designed and manufactured over 1,000 weather radar systems to over 90 countries. EEC offers S Band, C Band, and X Band options commercially. In 2013, EEC expanded its product line offering by acquiring the weather satellite ground station division from the Australia-based Environmental Systems & Services Pty Ltd company (ES&S). History Founded by a group of radar engineers in 1971, EEC made its public debut in 1974, when production of cavity magnetron and klystron commercial S and C-Band weather radars began.. Also in 1974, EEC was selected by the US National Weather Service to deliver 160 WSR-74 radar systems to replace the older models across the country. Following this, EEC expanded its operations, becoming a commonly consulted private radar company for media radars. Today, EEC is the only commercial weather radar vendor in the US to offer a compl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seo District, Daejeon
Seo District (Seo-gu) is a gu ("district") of Daejeon, South Korea. Daejeon Metropolitan City Hall is also located there. Administrative divisions Seo-gu is divided into 14 '' dong'' (동, "neighborhoods"): * Gasuwon-dong * Gwanjeo-dong * Giseong-dong * Wolpyeong-dong * Nae-dong * Gajang-dong * Goejeong-dong * Dunsan-dong * Sancheon-dong * Tanbang-dong * Yongmun-dong * Byeon-dong * Boksu-dong * Doma-dong Places of Interest Dunsan-dong is one of the more densely populated areas of Daejeon. As a result, it is the location of several points of interest. These include department stores, government offices, and several international chain restaurants and retailers. There is Pai Chai University Pai Chai University is one of South Korea's oldest modern universities. Its campus is located in Seo-gu, in Daejeon metropolitan city, on the lower slopes of Yeonja Mountain. It has a present-day student body of about 14,000. Undergraduate p ... in Seo District, Daejeon. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TOP500
The TOP500 project ranks and details the 500 most powerful non- distributed computer systems in the world. The project was started in 1993 and publishes an updated list of the supercomputers twice a year. The first of these updates always coincides with the International Supercomputing Conference in June, and the second is presented at the ACM/IEEE Supercomputing Conference in November. The project aims to provide a reliable basis for tracking and detecting trends in high-performance computing and bases rankings on HPL, a portable implementation of the high-performance LINPACK benchmark written in Fortran for distributed-memory computers. The 60th TOP500 was published in November 2022. Since June 2022, USA's Frontier is the most powerful supercomputer on TOP500, reaching 1102 petaFlops (1.102 exaFlops) on the LINPACK benchmarks. The United States has by far the highest share of total computing power on the list (nearly 50%), while China currently leads the list in number of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercomputer
A supercomputer is a computer with a high level of performance as compared to a general-purpose computer. The performance of a supercomputer is commonly measured in floating-point operations per second ( FLOPS) instead of million instructions per second (MIPS). Since 2017, there have existed supercomputers which can perform over 1017 FLOPS (a hundred quadrillion FLOPS, 100 petaFLOPS or 100 PFLOPS). For comparison, a desktop computer has performance in the range of hundreds of gigaFLOPS (1011) to tens of teraFLOPS (1013). Since November 2017, all of the world's fastest 500 supercomputers run on Linux-based operating systems. Additional research is being conducted in the United States, the European Union, Taiwan, Japan, and China to build faster, more powerful and technologically superior exascale supercomputers. Supercomputers play an important role in the field of computational science, and are used for a wide range of computationally intensive tasks in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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