Global distribution of maternal causes of. death. A maternal death is defined as the death of a. woman while pregnant or within 42 days of. termination of pregnancy, regardless of the. site or duration of pregnancy, from any cause. related to or aggravated by the pregnancy or. its management.
There are two types of control systems namely: 1  Open loop control systems (non-feedback control systems) 2  Closed loop control systems (feedback control systems)
There are several other systems that are used for similar purposes as SCADA. These are generally called Distributed Control Systems (DCS). The functions are the same; the difference is in the range. Distributed Control Systems are typically effective within a confined area like a factory complex.