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Geographically distributed data centers for the rapid growth of worldwide cloud service bring the demand of massive inter-data center information exchange. Considering the capacity and costs, existing optical networks show their advantages to carry the non-interactive, delay tolerated and bulk inter-data center data. In order not to affect the real-time traffic, these bulk data is usually transferred...
During quiet standing, humans tend to sway with a distinctive pattern that has been difficult to capture with simple engineering models. We have developed a nonlinear optimal control model for posture regulation. The proposed model consists of two main components: body dynamics and performance measure. The body dynamics are those of a double inverted pendulum in the sagittal plane controlled by ankle...
Polarization-dependent RF delay and amplitude due to PMD in OBFNs are investigated. Delay deviation and amplitude fluctuations in each delay line cause a major degradation of the OBFNs radiation pattern.
The quietly standing human is modeled by a two-segment inverted pendulum controlled by an ankle torque. Both the control and the observations are significantly delayed and corrupted by exogenous noise, as they are in reality. Three controllers of this plant are derived and compared. The first is an MPC-based controller that approximately optimizes a performance criterion that is quartic in the state...
A series of convex optimal control problems is proposed as mathematical models of human postural control during quiet standing. The human body is modeled as a two-segment inverted pendulum controlled by a joint torque. Several performance criteria that are quartic in the state and quadratic in the control are utilized. The discrete-time approximation to each of these problems is a convex programming...
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