SUMMARY We derive closed-form solutions for the linear-quadratic (LQ) optimal control problem subject to integral quadratic constraints. The optimal control is a non-linear function of the current state and the initial state. Furthermore, the optimal control is easily calculated by solving an unconstrained LQ control problem together with an optimal… (More)
Multimedia communication over networks is an important topic in distance learning, computer-based multimedia and telecommunications. The quality of the video stream, the throughput of the communication and the time delay of the delivery are the important issues that must be considered. This paper describes some experimental work undertaken to optimise the… (More)
Brain function research is one of the most important projects in biological sciences. Learning and memory is one of the most advanced functions in brain. This article reviewed the effects of some neurotransmitters and neuroactive peptides on learning and memory in an attempt to stimulate the research aiming at improving learning and memory.