National identification number "Teudat Zehut"), bearing an Identity Number, is issued to all residents over 16 years old who have legal temporary or permanent residence status, including non-citizens. Japan's national identification number system, known within the country as "My Number" (Japanese: マイナンバー), went into effect from 2016. The number consists of 12 digits, and one is assigned to each resident of Japan, including non-Japanese long-term residents with valid residency permits. In Kazakhstan there is a 12-digit Individual Identification Number for natural persons (abbreviated in , "ZhSN"; in , "IIN", with first six digits representing person's date of birth in the YYMMDD format) and
Pfafstetter Coding System Pfafstetter Coding System The Pfafstetter Coding System is a hierarchical method of hydrologically coding river basins. It was developed by the Brazilian engineer Otto Pfafstetter in 1989. It is designed such that topological information is embedded in the code, which makes it easy to determine whether an event in one river basin will affect another by direct examination of their codes. In the 1950s, Pfafstetter suggested the use of a hierarchical system of coding river basins, later described in a 1989 paper. The method was applied to Brazilian water networks, and has been used in a number of other applications.