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is a definition of metropolitan areas, defined by the Center for Spatial Information Service, the University of Tokyo. The Japan's Ministry of Economy, Trade and Industry defined 233 areas for the UEAs of Japan. For the latter scheme, see the ''List of metropolitan areas in Japan by population'' article. The basic principle of UEA is similar to that of the Statistics Bureau definition; a central city and its associated outlying municipalities with certain amounts of commuters. A UEA with at least 50,000 DID (Densely Inhabited District) population is called or MEA for short in English. A UEA with at least 10,000 and less than 50,000 DID population is called or McEA for short in English. ==Definition== ;Central city: *If a municipality has at least 10,000 DID population, and is not a suburb of any other municipalities, it is defined as a central city. *Even if a municipality is a suburb of another, it can still be defined as a central city. In this case, a municipality must have workers working there more than those living there. It must also have the DID population of at least 10,000, or a third of the population of the central city. ;Suburb: *If a municipality A has more than 10% of its population commuting to a central city B, A is defined as a (primary) suburb of B. * *If there are multiple such cities for a suburb A, the one with the most commuters from A is defined as A's central city. *If a municipality A has more than 10% of its population commuting to another suburb B, and if no other municipalities have more commuters from A, A is defined as a secondary suburb or lower of B. *If a municipality A has more than 10% of its population commuting to B and vice versa, the one with the higher percentage of commuters is defined as a suburb of another. *If a central city comprises multiple municipalities, numbers of commuters to all those municipalities are counted for the calculations above. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Urban Employment Area」の詳細全文を読む スポンサード リンク
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