Fault tolerance based on passive replication is common in many systems. If this kind of fault tolerance mechanism is to be used in a real-time system, timing analysis is necessary, as the fault tolerance mechanism itself may cause timing faults. There are different ways of detecting when the primary replica has failed, one of them is to use a timeout to detect crash and omission failures, anoth...

Initially acquired memory dissipates rapidly if not consolidated. Such memory decay is thought to result either from the inherently labile nature of newly acquired memories or from interference by subsequently attained information. Here we report that a small G protein Rac-dependent forgetting mechanism contributes to both passive memory decay and interference-induced forgetting in Drosophila. ...

The ankle rehabilitation in certain injuries requires passive movements to aid the prompt recovery of movement. In last years, parallel robots with multiple degrees freedom have been most studied for providing such a controlled way. Nevertheless, high cost does not make it viable home healthcare. Then, this paper presents an optimization approach where spherical mechanism one-degree-of-freedom ...

cannabis is one of the most widely abused substances throughout the world. the primary psychoactive constituent of cannabis, delta 9-tetrahydrocannabinol (▵(9_)thc), produces a myriad of pharmacological effects in animals and humans. although it is used as a recreational drug, it can potentially lead to dependence and behavioral disturbances and its heavy use may increase the risk for psychotic...

Surgical robots are safety-critical devices that require multiple domains of safety features. This article focuses on the passive gravity compensation design optimization a surgical robot. The limits this related with features including minimization total moving mass/inertia and compactness design. particle swarm method is used as novel approach for parallel remote-center-of-motion mechanism. A...

Euthanasia is one of the controversial topics in current medical ethics. Among the six well-known types of euthanasia, passive voluntary euthanasia (PVE) seems to be more plausible in comparison with other types, from the moral point of view. According to the Kantian framework, ethical features come from 'reason'. Maxims are formulated as categorical imperative which has three different version...