In this paper we propose a control architecture able to deal with the two main instabilities: the axisymmetric vertical instability and the non-axisymmetric kink instability.
The boundaries of the main parametric instability region of the linearized equation are obtained.
The main topologic instability originated from the uncertainty in the branching of GBA and HHA (see all 10 most parsimonious trees in Additional file 1: Figure S1).
Surge is one of the two main dynamic instabilities that can occur in compressor systems (the other is the rotating stall) preventing their satisfactory operation and being potential cause of serious damages.
The main motor of instability there is not religion but repression.
India is by far the military superior, but it is Pakistan that seems to Mr. Jennings and others to be the main source of instability.
By ending regional interference as the main source of instability in Afghanistan; long-term Marshall Planning to rebuild Afghan state institutions and the economy; and ensuring international unity of effort to succeed in Afghanistan.
Indeed, China, for all the outward modernity of Beijing, may not be nearly as stable as it looks, and there is good reason to believe that the one-party system is itself the main source of instability.
Assad's repression and murder have been the main source of instability in the region, which is in turn exploited by groups like Isis to recruit and expand in the Middle East and around the world.
But the power-sharing government formed after the violence of early 2008 by President Kibaki and his rival, Mr Odinga, has dismally failed to address the main causes of instability: a lack of land and jobs.
