Firstly, an optimal equation which can determine optimal supervisor is established by introducing the definitions of cost function, objective function and optimal function.

首先，通过引入费用函数、目标函数以及最优函数的定义，建立了可以确定最优监控器的最优方程。

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"Every cancer survivor should have the opportunity to heal as well as possible and function at optimal level whether their cancer is cured, in remission or they live with cancer as a chronic disease, " Dr. Silver says.

WSJ: Rehab for Cancer Survivors

They believe that sleep deprivation or sleep disturbances may affect the immune system's ability to function at an optimal level.

CNN: Study: Can more sleep help fight off colds?

Like chronically ill patients, these businesses function at less than optimal performance.

FORBES: Written by John H. Hammergren