Recent studies of the CO oxidation activity exhibited by highly dispersed nano-gold (Au) catalysts have reached the following conclusions: (a) bilayer structures of Au are critical; (b) a strong interaction between Au and the support leads to wetting and electronrich Au; (c) oxidative environments deactivate Au catalyst by re-oxidizing the support, which causes the Au to de-wet and sinter. Rece...

When a client interacts with an expert, e.g. a doctor, it falls upon the expert to ask questions that steer the process towards fulfilling the client’s needs. This is most efficient given that the expert has more knowledge and a broader view of possible illnesses and treatments. On the other hand, when faced with an information retrieval (IR) task, most IR systems leave to the client the task o...

This paper revisits the problem of active learning and decision making when the cost of labeling incurs cost and unlabeled data is available in abundance. In many real world applications large amounts of data are available but the cost of correctly labeling it prohibits its use. In many cases, where unlabeled data is available in abundance, active learning can be employed. In our proposed appro...

We introduce a model for active transport on inhomogeneous networks embedded in a diffusive environment which is motivated by vesicular transport on actin filaments. In the presence of a hard-core interaction, particle clusters are observed that exhibit an algebraically decaying distribution in a large parameter regime, indicating the existence of clusters on all scales. The scale-free behavior...

Abstract Aiming at the harmonic resonance problem of photovoltaic inverter cluster system when it is incorporated into weak power grid, an active damper frequency division control method proposed to suppress resonance. Firstly, voltage signal measured by transformer separated according frequency, and then conductance value band controlled respectively voltage. Finally, output current feedback g...

BACKGROUND This paper reports a cluster analysis of a sample recruited from a randomized controlled trial that explored the effect of using a life story work approach to improve the psychological outcomes of older people in the community. METHODS 238 subjects from community centers were included in this analysis. After statistical testing, 169 seniors were assigned to the active ageing (AG) c...