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A ziggurat (/ ˈ z ɪ ɡ ʊ ˌ r æ t /; Cuneiform: 𒅆𒂍𒉪, Akkadian: ziqqurratum, [2] D-stem of zaqārum 'to protrude, to build high', [3] cognate with other Semitic languages like Hebrew zaqar (זָקַר) 'protrude' [4] [5]) is a type of massive structure built in ancient Mesopotamia. It has the form of a terraced compound of ...
The Ziegler–Nichols tuning method is a heuristic method of tuning a PID controller.It was developed by John G. Ziegler and Nathaniel B. Nichols.It is performed by setting the I (integral) and D (derivative) gains to zero.