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Robot has been receiving increasing attention and robot in education is considered a promising aid for teaching and learning in many ways. This study attempts to investigate the need of the educational robot among six different user groups (pre-school user, primary school user, high school user, college user, adult user and elderly user). A triangulation technique was applied for cross validation,...
Interface engineering is a critical strategy for improving the performance of both polymer and organometal trihalide perovskite (e.g., CH3NH3PbI3) solar cells. A good interfacial material should fulfill several requirements including 1) good charge selectivity to improve the charge collection efficiency at the corresponding electrodes, 2) matched energy levels with the conduction band and valence...
Recent explorations of topology in physical systems have led to a new paradigm of condensed matters characterized by topologically protected states and phase transition, for example, topologically protected photonic crystals enabled by magneto-optical effects. However, in other wave systems such as acoustics, topological states cannot be simply reproduced due to the absence of similar magnetics-related...
To reduce casualties caused by the underground coal mining accidents, the experiment studies the basic conditions for human survivor in movable refuge chamber through the simulated enclosed underground environment. By conducting this experiment and testing subjects under the different physical circumstance in enclosed environment, we have learned the relationship between heart rate and breathing rate,...
This paper presents the performance evaluation of a common signal employed to enable coexistence between heterogeneous physical (PHY) layer designs in the Smart Utility Networks (SUNs). The coexistence mechanism, known as Multi-PHY Management (MPM) uses a common PHY signaling specification known as the Common Signaling Mode (CSM) to facilitate interference avoidance/mitigation among the three specified...
This paper proposes a general-purpose method for estimating the skew angles of document images. Rather than to derive a skew angle merely from text lines, the proposed method exploits various types of visual cues of image skew available in local image regions. The visual cues are extracted by Radon transform and then outliers of them are iteratively rejected through a floating cascade. A bagging (...
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