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Routing in wireless ad-hoc networks has received significant attention from recent literature due to the fact that the dynamic behavior of these networks poses many technical challenges on the design of an effective routing scheme. Though on-demand routing approaches have been shown to perform well, they generally lack the support for Quality-of-Service(More)
— Topology control with per-node transmission power adjustment in wireless sensor networks has been shown to be effective with respect to prolonging network lifetime via power conservation and increasing network capacity via better spatial bandwidth reuse. In this work, we consider the problem of topology control in a network of heterogeneous wireless(More)
— Since wireless mobile ad hoc networks are arbitrarily and dynamically deployed, the network performance may be affected by many unpredictable factors such as the total number of nodes, physical area of deployment, and transmission range on each node. Previous research results only focus on maximizing power efficiency through dynamically adjusting the(More)
A novel and facile two-step strategy has been designed to prepare high performance bi-transition-metals (Fe- and Mo-) carbide supported on nitrogen-doped graphene (FeMo-NG) as electrocatalysts for oxygen reduction reactions (ORR). The as-synthesized FeMo carbide -NG catalysts exhibit excellent electrocatalytic activities for ORR in alkaline solution, with(More)
Sodium-ion batteries are a potentially low-cost and safe alternative to the prevailing lithium-ion battery technology. However, it is a great challenge to achieve fast charging and high power density for most sodium-ion electrodes because of the sluggish sodiation kinetics. Here we demonstrate a high-capacity and high-rate sodium-ion anode based on(More)
Texture as a measure of spatial features has been useful as supplementary information to improve image classification in many areas of research fields. This study focuses on assessing the ability of different textural vectors and their combinations to aid spectral features in the classification of silicate rocks. Texture images were calculated from Landsat(More)
Platinum is ubiquitous in the production sectors of chemicals and fuels; however, its scarcity in nature and high price will limit future proliferation of platinum-catalysed reactions. One promising approach to conserve platinum involves understanding the smallest number of platinum atoms needed to catalyse a reaction, then designing catalysts with the(More)
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