Rank in Judo black. In Canada belt rankings for Seniors are, in ascending order: white, yellow, orange, green, blue, brown and finally black. Belt rankings for Juniors use, white, white-yellow, yellow, yellow-orange, orange, orange-green, green, green-blue, blue, blue-brown, and brown. In Australia belt rankings for Seniors are, in ascending order: white, yellow, orange, green, blue, brown and finally black. Belt rankings for Juniors follow the same ranks and colours (up to and including brown), but have either 1, 2 or 3 white bars (depending upon age) at each end of the belt, as follows: If the judoka is aged up to 10 (Mon),
Returns to scale (DRS). If output increases by more than the proportional change in all inputs, there are increasing returns to scale (IRS). A firm's production function could exhibit different types of returns to scale in different ranges of output. Typically, there could be increasing returns at relatively low output levels, decreasing returns at relatively high output levels, and constant returns at one output level between those ranges. In mainstream microeconomics, the returns to scale faced by a firm are purely technologically imposed and are not influenced by economic decisions or by market conditions (i.e., conclusions about returns to scale are derived from