A formulation of the stabilizing control law is obtained for control-affine driftless systems by means of approximating the value function of the performance index by a CLF.

采用CLF近似性能指标的值函数，获得了控制仿射无漂系统的镇定控制律表达式。

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Below is a long-term dividend history chart for CLF, which Dividend Channel stressed as being of key importance.

FORBES: Why Cliffs Natural Resources, Inc. Is a Top 5 Metals Channel Dividend Stock

After the dot-com collapse in 2001, for example, his screens picked up a collection of steel companies such as Cleveland-Cliffs (nyse: CLF - news - people ), Metals USA, Oregon Steel Mills and Quanex (nyse: NX - news - people ).

FORBES: 2008 Investment Guide