Abstract: In this article, we investigate the optimal control problem for an unknown linear time-invariant system. To solve this problem, a novel composite policy iteration algorithm based on adaptive ...

Abstract: This paper investigates the transient stability of the grid-forming and grid-following (GFM-GFL) paralleled system based on the Lyapunov direct method. To achieve this goal, an improved ...

Two months after Europe’s new biometric border checks launched, long queues and inconsistent procedures continue to frustrate travellers. Now, a Frontex official has warned that the troubled ...

Travelers are warned that border control wait times may reach six hours as Europe’s digital EES entry system faces major hurdles. Europe’s new automated border system, which went into full effect on ...

Heading to Europe this summer? You may want to pack your patience as some travelers report hours-long lines trying to enter the European Union under its new screening process. After a gradual rollout ...