In this paper we demonstrate that a passive vibration strategy can bring a 1 degree of freedom ball to a known trajectory from all possible initial configurations. We draw motivation from the problem of parts feeding in sensorless assembly. We provide simulation results suggesting the relevance of our analytical results to the parts feeding problem. Comments Copyright 1995 IEEE. Reprinted from ...

This paper introduces an on-going doctoral research track on the role of survivability as an attribute in the design of complex system architectures. Survivability may be defined generally as the ability of a system to minimize the impact of a finite disturbance on value delivery, achieved through either the satisfaction of a minimally acceptable level of value delivery during and after a finit...

Amputees using passive ankle-foot prostheses tend to expend more metabolic energy during walking than non-amputees, and reducing this cost has been a central motivation for the development of active ankle-foot prostheses. Increased push-off work at the end of stance has been proposed as a way to reduce metabolic energy use, but the effects of push-off work have not been tested in isolation. In ...

In this paper we demonstrate that a passive vibration strategy can bring a 1 degree of freedom ball to a known trajectory from all possible initial configurations. We draw motivation from the problem of parts feeding in sensorless assembly. We provide simulation results suggesting the relevance of our analytical results to the parts feeding problem. Comments Copyright 1995 IEEE. Reprinted from ...

Robots with legs and arms have the potential to support humans in dangerous, dull or dirty tasks. A major motivation behind research on such robots is their potential versatility. However, these robots come at a high price in mechanical and control complexity. Hence, until they can demonstrate a clear advantage over their simpler counterparts, robots with arms and legs will not fulfill their tr...

It is expected that the requirements for access networks will change in the future due to the increase in bandwidth demand, due to the shift to packet based services and due to the drive to implement a full service network. Optical access networks are a logical implementation of these requirements. Of all the access infrastructure available, optical fiber has the largest bandwidth potential. In...

In this paper we investigate oscillations of a dynamical system containing passive dynamics driven by a positive feedback and how spatial characteristics (i.e. symmetry) affect the amplitude and stability of its nominal limit cycling response. The physical motivation of this problem is thermoacoustic dynamics in a gas turbine combustor. The spatial domain is periodic (passive annular acoustics)...

A computer-supported collaborative learning environment can enable students in web-based distance education courses to interact with each other and with one or more facilitators to conduct group work. Problem-based learning (PBL) is a learning theory that emphasizes the use of collaboration and teamwork to solve problems. However, a problem that occurs frequently in the implementation of PBL is...

Social live streaming services (SLSS) have emerged as a new type of hedonic social media. SLSS allow users to watch and broadcast video streams in real-time, fostering sociability through synchronous communication via chat channels. While the extant literature has mostly examined producers’ use of SLSS, the consumer perspective has been underexplored. Prior research has identified perceived enj...

Modern theories of drug dependence hold the hedonic effects of drug-taking central to understanding the motivation for compulsive drug use. Previous neuroimaging studies have begun to identify brain regions associated with acute drug effects after passive delivery. In this study, a more naturalistic model of cocaine self-administration (SA) was employed in order to identify those sites associat...