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Usuda, Nagano
was a town located in Minamisaku District, Nagano Prefecture, Japan. It is the farthest point in the country away from the sea, although the nearby town of Saku claims to hold this distinction as well. As of 2003, the town has an estimated population of 15,731 and a density of 189.05 persons per km². The total area is 83.21 km². History *c. 1875 The village of Yuhara absorbed the village of Yuharashinden in Saku District. *August 2, 1876 The villages of Tanokuchi and Kaminakagomi merged into the village of Taguchi. *c. 1879 Minamisaku District government enforced. The villages of Usuda, Shimootagiri, Katsuma, Kamiotagiri, Nakaotagiri, Nakaotagirishinden, Yuhara, Mibun, Shimogoe, Taguchi, Irisawa and Hirabayashi belongs to Minamisaku District. *April 1, 1889 The city, town, and village status enforced. **The village of Usuda absorbed the villages of Shimootagiri and Katsuma. **The villages of Kamiotagiri, Nakaotagiri, Nakaotagirishinden and Yuhara merged to form t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nagano Prefecture
is a landlocked prefecture of Japan located in the Chūbu region of Honshū. Nagano Prefecture has a population of 2,052,493 () and has a geographic area of . Nagano Prefecture borders Niigata Prefecture to the north, Gunma Prefecture to the northeast, Saitama Prefecture to the east, Yamanashi Prefecture to the southeast, Shizuoka Prefecture and Aichi Prefecture to the south, and Gifu Prefecture and Toyama Prefecture to the west. Nagano is the capital and largest city of Nagano Prefecture, with other major cities including Matsumoto, Ueda, and Iida. Nagano Prefecture has impressive highland areas of the Japanese Alps, including most of the Hida Mountains, Kiso Mountains, and Akaishi Mountains which extend into the neighbouring prefectures. The abundance of mountain ranges, natural scenic beauty, and rich history has gained Nagano Prefecture international recognition as a world-class winter sports tourist destination, including hosting the 1998 Winter Olympics and a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Population Density
Population density (in agriculture: Stock (other), standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopulation Density Geography.about.com. March 2, 2011. Retrieved on December 10, 2011. In simple terms, population density refers to the number of people living in an area per square kilometre, or other unit of land area. Biological population densities Population density is population divided by total land area, sometimes including seas and oceans, as appropriate. Low densities may cause an extinction vortex and further reduce fertility. This is called the Allee effect after the scientist who identified it. Examples of the causes of reduced fertility in low population densities are * Increased problems with locating sexual mates * Increased inbreeding Human densities Population density is the number of people pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star Fort
A bastion fort or ''trace italienne'' (a phrase derived from non-standard French, literally meaning ''Italian outline'') is a fortification in a style that evolved during the early modern period of gunpowder when the cannon came to dominate the battlefield. It was first seen in the mid-fifteenth century in Italy. Some types, especially when combined with ravelins and other outworks, resembled the related star fort of the same era. The design of the fort is normally a polygon with bastions at the corners of the walls. These outcroppings eliminated protected blind spots, called "dead zones", and allowed fire along the curtain from positions protected from direct fire. Many bastion forts also feature cavaliers, which are raised secondary structures based entirely inside the primary structure. Origins Their predecessors, medieval fortresses, were usually placed on high hills. From there, arrows were shot at the enemies. The enemies' hope was to either ram the gate or c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Usuda Star Dome
is a public observatory located in Saku, Nagano, Japan. Saku is one of the best places for astronomical observation in Japan because of high altitude, high rate of sunny days, and limpid air. Visitors are allowed to watch stars through the large telescope from 10 a.m. to 10 p.m. History The observatory was founded by Usuda. It was transferred to (new) Saku on April 1, 2005 when Usuda has merged with (old) Saku, Mochizuki, and Asashina. Telescopes The main telescope of the observatory is 600 mm Cassegrain reflector constructed by Mitaka Kohki. It has the "Wonder Eye" flexible focal extending system which provides "barrier free" star watching. It is also equipped with two 200 mm refractors also constructed by Mitaka Kohki. See also * Saku * Saku Children's Science Dome for the Future * Usuda Deep Space Center * List of astronomical observatories * List of astronomical societies * Lists of telescopes This is a list of lists of telescopes. * Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Usuda Deep Space Center
Usuda Deep Space Center is a facility of the Japan Aerospace Exploration Agency. It is a spacecraft tracking station in Saku, Nagano, opened in October, 1984. The main features of the station are two large beam waveguide antennas, an older 64 meter antenna and a newer 54 meter dish. Usuda was the first deep-space antenna constructed with beam-waveguide technology. Although this construction dramatically simplifies installation and maintenance of electronics, it was previously thought to offer poor noise performance. However, after the U.S. Jet Propulsion Lab (JPL) tested this antenna and found the noise performance was better than its conventional 64-meter antennas, it too switched to this method of construction for all subsequent antennas of their Deep Space Network (DSN). Because the 64 meter antenna is aging and is still in use over ten years after its designed service life, JAXA has built a new antenna nearby. Similar huge antennas are used by the deep space networks o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star
A star is an astronomical object comprising a luminous spheroid of plasma held together by its gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night, but their immense distances from Earth make them appear as fixed points of light. The most prominent stars have been categorised into constellations and asterisms, and many of the brightest stars have proper names. Astronomers have assembled star catalogues that identify the known stars and provide standardized stellar designations. The observable universe contains an estimated to stars. Only about 4,000 of these stars are visible to the naked eye, all within the Milky Way galaxy. A star's life begins with the gravitational collapse of a gaseous nebula of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Its total mass is the main factor determining its evolution and eventual fate. A star shines for most of its active life due t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kitasaku District, Nagano
is a district located in Nagano Prefecture, Japan. As of December 1, 2005, the district has an estimated population of 40,041. The district has three towns *Karuizawa * Miyota * Tateshina District Timeline *On April 1, 2004, the village of Kitamimaki merged with the town of Tōbu, from Chiisagata District, to form the new city of Tōmi. *On April 1, 2005, the town of Mochizuki and the village of Asashina merged with the city of Saku and the town of Usuda from Minamisaku District is a district located in Nagano Prefecture, Japan. As of 1 December 2005, the district has an estimated population of 29,263. As of December 2005, the district have two towns and four villages. * Kawakami *Kitaaiki * Koumi *Minamiaiki * Minamimak ... to form the new city of Saku. Districts in Nagano Prefecture {{Nagano-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asashina, Nagano
was a village located in Kitasaku District, Nagano Prefecture, Japan. As of 2003, the village had an estimated population of 6,423 and a density Density (volumetric mass density or specific mass) is the substance's mass per unit of volume. The symbol most often used for density is ''ρ'' (the lower case Greek letter rho), although the Latin letter ''D'' can also be used. Mathematicall ... of 329.05 persons per km². The total area was 19.52 km². History *May 30, 1876 The village of Shionada absorbed the village of Ichizaemonshinden in Saku District. *c. 1879 Kitasaku District government enforced. The villages of Shionada, Mimayose, Gorobēshinden, Yawata, Yomogita, Kuwayama, and Yashima belongs to Kitasaku District. *April 1, 1889 The city, town, and village status enforced. **The villages of Shionada and Mimayose merged to form the village of Nakatsu. **The villages of Yawata, Yomogita, Kuwayama and Yashima merged to form the village of Minamimimaki. *January ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mochizuki, Nagano
was a town located in Kitasaku District, Nagano Prefecture, Japan. As of 2003, the town had an estimated population of 10,440 and a density of 81.16 persons per km². The total area was 128.64 km². History *c. 1875 The town of Mochizukishinden merged into the town of Mochizuki in Saku District. The village of Kannonjishinden merged into the village of Motai. The villages of Irikatakura, Iwashita, and Kasugashinmachi merged into the village of Kasuga. The village of Makifuse, Irifuse, Shikibu, Nukui, Nakai, Kutsuzawashinden, and Maeyamasanshinden merged to form the village of Fuse. *c. 1876 The village of Katakura, Hidai, Tenjinbayashi, Oyachishinden, Kodaira, Mitsui, and Koro merged to form the village of Kyowa. *c. 1879 Kitasaku District government enforced. The town of Mochizuki and the villages of Innai, Motai, Kasuga, Fuse, and Kyowa belongs to Kitasaku District. *April 1, 1889 The city, town, and village status enforced. **The town of Mochizuki and the villages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saku District, Shinano
was a district located in Shinano Province (now Nagano Prefecture). Due to land reforms, Saku District split into Minamisaku (南佐久郡) and Kitasaku (北佐久郡) Districts on January 14, 1879. The former is estimated to be located at Nagatoro in the city of Saku. Pesticide problems Cases of dermatitis caused by pesticide exposures, tabulated by the Division of Dermatology, Saku Central Hospital, Japan, from 1975 to 2000 are described. Dermatitis cases gradually decreased from 1975 to 2000, presumably accelerated by the phase-out of dermatitis-causing pesticides, including difolatan fungicide and salithion, an organophosphate insecticide. Cases of chronic and solar dermatitis gradually decreased, which may be explained by reductions in the use of allergenic or photosensitive sulfur agents and organophosphates. However, the ratios of chemical burns from irritant pesticides—calcium polysulfide, dazomet, methyl bromide, chlorpicrin, paraquat/diquat, organophosphorus, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Population
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a census, a process of collecting, analysing, compiling, and publishing data regarding a population. Perspectives of various disciplines Social sciences In sociology and population geography, population refers to a group of human beings with some predefined criterion in common, such as location, race, ethnicity, nationality, or religion. Demography is a social science Social science is one of the branches of science, devoted to the study of societies and the relationships among individuals within those societies. The term was formerly used to refer to the field of sociology, the original "science of soc ... which entails the statistical study of populations. Ecology In ecology, a population is a group of organisms of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Regions Of Japan
Japan is divided into eight regions. They are not official administrative units, though they have been used by government officials for statistical and other purposes since 1905. They are widely used in, for example, maps, geography textbooks, and weather reports, and many businesses and institutions use their home regions in their names, for example Kinki Nippon Railway, Chūgoku Bank, and Tōhoku University. Each region contains one or more of the country's 47 prefectures. Of the four main islands of Japan, Hokkaidō, Shikoku, and Kyūshū make up one region each, the latter also containing the Satsunan Islands, while the largest island Honshū is divided into five regions. Okinawa Prefecture is usually included in Kyūshū, but is sometimes treated as its own ninth region. Japan has eight High Courts, but their jurisdictions do not correspond to the eight regions (see Judicial system of Japan for details). Table Regions and islands This is a list of Japan's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
