Event-Based Stabilization over Networks with Transmission Delays

This paper investigates asymptotic stabilization for linear systems over networks based on event-driven communication. A new communication logic is proposed to reduce the feedback effort, which has some advantages over traditional ones with continuous feedback. Considering the effect of time-varying transmission delays, the criteria for the design of both the feedback gain and the event-triggering mechanism are derived to guarantee the stability and performance requirements. Finally, the proposed techniques are illustrated by an inverted pendulum system and a numerical example

Progressive Impairment of Motor Skill Learning in a D-Galactose- Induced Aging Mouse Model

Abstract.-Chronic administration of D-galactose (D-gal) has been reported to cause behavioral deterioration in mice similar to what is observed in the aging process, but the effect of D-gal on motor skill learning has not been examined. In the present study, mice were treated with D-gal (100 mg/kg/day) for a period ranging from 1 to 9 weeks, and motor skill learning was assessed using the rotarod test. D-gal-treated mice exhibited deficits in performance, including a shorter latency to fall and a decrease in intersession improvement compared to controls. Notably, motor skill deficiencies in mice subjected to short-term D-gal treatment (2-4 weeks) were rescued through repeated training, while there was no comparable improvement in mice receiving D-gal over a long term (≥ 5 weeks). The decline in rotarod performance reached a plateau at 7 weeks of D-gal exposure, suggesting that there is a ceiling effect. These results provide evidence that D-gal impairs motor learning capacity in a time-dependent manner, and demonstrate that chronic administration of D-gal is a reliable model for the behavioral decline associated with aging