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Guiyang Metro Lines
Guiyang (; ; Mandarin pronunciation: ), historically rendered as Kweiyang, is the capital of Guizhou province of the People's Republic of China. It is located in the center of the province, situated on the east of the Yunnan–Guizhou Plateau, and on the north bank of the Nanming River, a branch of the Wu River. The city has an elevation of about . It has an area of . At the 2020 census, its population was 5,987,018, out of whom 4,506,134 lived in the six urban districts. A city with humid subtropical climate, Guiyang is surrounded by mountains and forest. The area, inhabited since at least the Spring and Autumn period, formally became the capital of the surrounding province in 1413, during the Yuan dynasty. The city is home to a large Miao and Bouyei ethnic minority population. Guiyang has a diversified economy, traditionally a center for aluminum production, phosphate mining, and optical instrument manufacturing. Following reforms, the majority of the city's economic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prefecture-level City
A prefecture-level city () or prefectural city is an administrative division of the People's Republic of China (PRC), ranking below a province and above a county in China's administrative structure. During the Republican era, many of China's prefectural cities were designated as counties as the country's second level division below a province. From 1949 to 1983, the official term was a province-administrated city (Chinese: 省辖市). Prefectural level cities form the second level of the administrative structure (alongside prefectures, leagues and autonomous prefectures). Administrative chiefs (mayors) of prefectural level cities generally have the same rank as a division chief () of a national ministry. Since the 1980s, most former prefectures have been renamed into prefectural level cities. A prefectural level city is a "city" () and "prefecture" () that have been merged into one consolidated and unified jurisdiction. As such it is simultaneously a city, which is a munici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford University Press
Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books by decree in 1586, it is the second oldest university press after Cambridge University Press. It is a department of the University of Oxford and is governed by a group of 15 academics known as the Delegates of the Press, who are appointed by the vice-chancellor of the University of Oxford. The Delegates of the Press are led by the Secretary to the Delegates, who serves as OUP's chief executive and as its major representative on other university bodies. Oxford University Press has had a similar governance structure since the 17th century. The press is located on Walton Street, Oxford, opposite Somerville College, in the inner suburb of Jericho. For the last 500 years, OUP has primarily focused on the publication of pedagogical texts and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature Index
The Nature Index is a database that tracks institutions and countries and their scientific output since its introduction in November, 2014. Each year, Nature Index ranks the leading institutions (which can be companies, universities, government agencies, research institutes, or NGOs) and countries by the number of scientific articles and papers published in leading journals. This ranking can also be categorized by individual fields of research such as life sciences, chemistry, physics, or earth sciences, with different institutions leading in each. The Nature Index was conceived by Nature Research Nature Portfolio (formerly known as Nature Publishing Group and Nature Research) is a division of the international scientific publishing company Springer Nature that publishes academic journals, magazines, online databases, and services in scie .... In total, more than 10,000 institutions are listed in the Nature Index. The Nature Index migrated from its own domain www.natureindex.com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Cities By Scientific Output
The following article lists the City, cities and metropolitan areas with the greatest scientific output, according to the Nature Index. The Nature Index attempts to objectively measure the scientific output of institutions, cities and countries by the amount of scientific articles and Scientific paper, papers published in leading journals. Differences in quality are taken into account. Only articles published in 82 selected quality journals are counted. These journals were selected by an independent committee. If authors from several institutions from different cities are involved in a scientific article, it is divided accordingly, assuming that all researchers were equally involved in the article. In 2019, Beijing was the city in the world with the largest scientific output, accounting for 2.8% of the world's total. New York City was second in the world, with about 2% of the world’s total. Overall, the United States has the most cities in the top 100 list, followed by China. Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Data
Though used sometimes loosely partly because of a lack of formal definition, the interpretation that seems to best describe Big data is the one associated with large body of information that we could not comprehend when used only in smaller amounts. In it primary definition though, Big data refers to data sets that are too large or complex to be dealt with by traditional data-processing application software. Data with many fields (rows) offer greater statistical power, while data with higher complexity (more attributes or columns) may lead to a higher false discovery rate. Big data analysis challenges include capturing data, data storage, data analysis, search, sharing, transfer, visualization, querying, updating, information privacy, and data source. Big data was originally associated with three key concepts: ''volume'', ''variety'', and ''velocity''. The analysis of big data presents challenges in sampling, and thus previously allowing for only observations and sampling. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Instrument
An optical instrument (or "optic" for short) is a device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine their characteristic properties. Common examples include periscopes, microscopes, telescopes, and cameras. Image enhancement The first optical instruments were telescopes used for magnification of distant images, and microscopes used for magnifying very tiny images. Since the days of Galileo and Van Leeuwenhoek, these instruments have been greatly improved and extended into other portions of the electromagnetic spectrum. The binocular device is a generally compact instrument for both eyes designed for mobile use. A camera could be considered a type of optical instrument, with the pinhole camera and camera obscura being very simple examples of such devices. Analysis Another class of optical instrument is used to analyze the properties of light or optical materials. They include: *Interferometer for measuring the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bouyei People
The Bouyei (also spelled ''Puyi'', ''Buyei'' and ''Buyi''; self called: Buxqyaix, or "Puzhong", "Burao", "Puman"; ; vi, người Bố Y), otherwise known as the Zhongjia, are an ethnic group living in Southern Mainland China. Numbering 2.5 million, they are the 11th largest of the 56 ethnic groups officially recognized by the People's Republic of China. Despite the Chinese considering them a separate group, they consider themselves Zhuang (Tai peoples). The Bouyei mostly live in Qianxinan and Qiannan prefectures of Southern Guizhou Province, as well as in Yunnan and Sichuan Provinces. Some 3,000 Bouyei also live in Northern Vietnam, where they are one of that nation's 54 officially recognized ethnic groups. In Vietnam, they are known as the Bố Y and mostly live in Mường Khương District of Lào Cai and Quản Bạ District of Hà Giang Province. Names The Bouyei consist of various subgroups. Below are their autonyms written in the International Phonetic Alphabet wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miao People
The Miao are a group of linguistically-related peoples living in Southern China and Southeast Asia, who are recognized by the government of China as one of the 56 List of ethnic groups in China, official ethnic groups. The Miao live primarily in southern China's mountains, in the provinces of Guizhou, Yunnan, Sichuan, Hubei, Hunan, Guangxi, Guangdong, and Hainan. Some sub-groups of the Miao, most notably the Hmong people, have migrated out of China into Southeast Asia (Myanmar, Northern Vietnam, Laos, and Thailand). Following the History of Laos since 1945#Communist Laos, communist takeover of Laos in 1975, a large group of Hmong refugees resettled in several Western nations, mainly in the United States, France, and Australia. Miao is a Chinese language, Chinese term, while the component groups of people have their own autonyms, such as (with some variant spellings) Hmong people, Hmong, Hmu, Qo Xiong language, Xong (Qo-Xiong), and A-Hmao. These people (except those in Hainan) spea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yuan Dynasty
The Yuan dynasty (), officially the Great Yuan (; xng, , , literally "Great Yuan State"), was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after its division. It was established by Kublai, the fifth khagan-emperor of the Mongol Empire from the Borjigin clan, and lasted from 1271 to 1368. In orthodox Chinese historiography, the Yuan dynasty followed the Song dynasty and preceded the Ming dynasty. Although Genghis Khan had been enthroned with the Han-style title of Emperor in 1206 and the Mongol Empire had ruled territories including modern-day northern China for decades, it was not until 1271 that Kublai Khan officially proclaimed the dynasty in the traditional Han style, and the conquest was not complete until 1279 when the Southern Song dynasty was defeated in the Battle of Yamen. His realm was, by this point, isolated from the other Mongol-led khanates and controlled most of modern-day China and its surrounding areas, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spring And Autumn Period
The Spring and Autumn period was a period in Chinese history from approximately 770 to 476 BC (or according to some authorities until 403 BC) which corresponds roughly to the first half of the Eastern Zhou period. The period's name derives from the ''Spring and Autumn Annals'', a chronicle of the state of Lu between 722 and 479 BCE, which tradition associates with Confucius (551–479 BCE). During this period, the Zhou royal authority over the various feudal states eroded as more and more dukes and marquesses obtained ''de facto'' regional autonomy, defying the king's court in Luoyi and waging wars amongst themselves. The gradual Partition of Jin, one of the most powerful states, marked the end of the Spring and Autumn period and the beginning of the Warring States period. Background In 771 BCE, a Quanrong invasion in coalition with the states of Zeng and Shen — the latter polity being the fief of the grandfather of the disinherited crown prince Yijiu — destroyed the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Administrative Divisions
Administrative division, administrative unit,Article 3(1). country subdivision, administrative region, subnational entity, constituent state, as well as many similar terms, are generic names for geographical areas into which a particular, independent sovereign state (country) is divided. Such a unit usually has an administrative authority with the power to take administrative or policy decisions for its area. Usually, the countries have several levels of administrative divisions. The common names for the principal (largest) administrative divisions are: states (i.e. "subnational states", rather than sovereign states), provinces, lands, oblasts, governorates, cantons, prefectures, counties, regions, departments, and emirates. These, in turn, are often subdivided into smaller administrative units known by names such as circuits, counties, ''comarcas'', raions, '' județe'', or districts, which are further subdivided into the municipalities, communes or communities consti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Vertical datum). The term ''elevation'' is mainly used when referring to points on the Earth's surface, while ''altitude'' or ''geopotential height'' is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and '' depth'' is used for points below the surface. Elevation is not to be confused with the distance from the center of the Earth. Due to the equatorial bulge, the summits of Mount Everest and Chimborazo have, respectively, the largest elevation and the largest geocentric distance. Aviation In aviation the term elevation or aerodrome elevation is defined by the ICAO as the highest point of the landing area. It is often measured in feet and can be found in approach charts of the aerodrome. It is n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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