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المؤلفون: Min Yan, Rui Huang, Zhao-Yun Wang, Chen-Yang Wang, Wen-Peng Wang, Juan Zhang, Yu-Hui Zhu, Zhitian Liu, Sen Xin, Li-Jun Wan, Yu-Guo Guo
المصدر: The Journal of Physical Chemistry C. 127:1355-1362
مصطلحات موضوعية: General Energy, Physical and Theoretical Chemistry, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
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المؤلفون: Chen-Yang Wang, Jing-Min Liang, Wen-Lan Wu, Ming-Yuan Shieh
المصدر: Microsystem Technologies. 27:1175-1186
مصطلحات موضوعية: 010302 applied physics, Computer science, Interactive control, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Disabled people, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Human–robot interaction, Electronic, Optical and Magnetic Materials, Hardware and Architecture, Human–computer interaction, Gesture recognition, ComputerApplications_GENERAL, 0103 physical sciences, Robot, Electrical and Electronic Engineering, 0210 nano-technology, Throwing, Humanoid robot, Gesture
الوصف: This paper proposes an interaction method in human gestures for controlling robot play soccer. It aims to design a human–robot interactive control scheme let a humanoid robot to substitute who want but cannot such as disabled people without feet for playing soccer games. The scheme first adopts the Kinect based gesture recognition system to analyze human gestures, and then drives the humanoid robot to do respective motions for playing soccer or throwing ball according to what human gestures. The proposed gesture recognition scheme consists of two subsystems in which the Kinect-based 3D framework trace system provides the kernel recognition and the electromyography signal measurement assists the slight movement detection. It mainly makes all the motions of upper body classified as several types of gestures. Every different gesture is set in relative to a unique soccer motion of the humanoid robot. Therefore, a gesture is a control commend of a robotic motion. Based on such translation, a human can only use his/her hands and upper body to play soccer but in humanoid robot. From the experimental results, it demonstrates the satisfactory interactive human–robot soccer processes.
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::8f8faa142bf09a1aade3fecc4bb01f96
https://doi.org/10.1007/s00542-018-4138-1 -
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المؤلفون: Zih-Siou Hong, Ren-Jang Wu, Chen-Yang Wang
المصدر: Physica E: Low-dimensional Systems and Nanostructures. 69:191-197
مصطلحات موضوعية: Materials science, Nanocomposite, Analytical chemistry, Nanotechnology, Heterojunction, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Adsorption, chemistry, Transmission electron microscopy, Desorption, Electrode, Nitrogen dioxide, NOx
الوصف: Metal-oxide nanocomposites were prepared over screen-printed gold electrodes to be used as room-temperature NO x (nitric-oxide (NO) and nitrogen dioxide (NO 2 )) sensors. Various weight ratios of SnO 2 –WO 3 and Pt loadings were used for NO sensing. The sensing materials were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and BET surface analysis. The NO-sensing results indicated that SnO 2 –WO 3 (1:2) was more effective than other materials were. The sensor response ( S =resistance of N 2 /resistance of NO= R N 2 / R NO ) for detecting 1000 ppm of NO at room temperature was 2.6. The response time ( T 90 ) and recovery time (TR 90 ) was 40 s and 86 s, respectively. By further loading with 0.5% Pt, the sensor response increased to 3.3. The response and recovery times of 0.5% Pt/SnO 2 –WO 3 (1:2) were 40 s and 206 s, respectively. The linearity of the sensor response for a NO concentration range of 10–1000 ppm was 0.9729. A mechanism involving Pt promotion of the SnO 2 –WO 3 heterojunction was proposed for NO adsorption, surface reaction, and adsorbed NO 2 desorption.
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المؤلفون: Haohong Chen, Lin-Lin Zhu, Ke Yang, Guan-Qin Hu, Bi-Qiu Liu, Hong Wang, Zhijun Zhang, Jing-Tai Zhao, Chen-Yang Wang
المصدر: Journal of Non-Crystalline Solids. 363:84-88
مصطلحات موضوعية: Materials science, business.industry, Analytical chemistry, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Annealing (glass), law.invention, Amorphous solid, Optics, Differential scanning calorimetry, Absorption edge, law, Attenuation coefficient, Materials Chemistry, Ceramics and Composites, Transmittance, Crystallization, Glass transition, business
الوصف: Bi2O3-SiO2-Al2O3 based glasses of good transparency with high Bi2O3 content (similar to 36 mol%) have been obtained by using melting method. Glass transition, crystallization and phase reaction temperatures of as-synthesized glass have been characterized by differential scanning calorimetry (DSC). The X-ray diffraction (XRD) analysis confirms the amorphous structure of the glass samples before and after the annealing. Ultraviolet and visible transmittance spectra show that the transmittance of as-synthesized glasses (0.6 mm thickness) can reach up to 80.1% in the visible region (above 550 nm), with the cutoff wavelength at 386 nm. The linear absorption coefficient (alpha), optical mobility gap (E-opt) as well as Urbach energy (Delta E) are calculated from optical transmittance. After annealing at 550 degrees C, the transmittance increases slightly near the absorption edge which shifts itself towards shorter wavelength. The roles of composition, heating and annealing profile on the transmittance of glasses have been discussed. For Bi2O3-SiO2-Al2O3 glasses with high Bi2O3 content, the Hruby factor is about 0.26, suggesting good stability. (C) 2012 Elsevier B.V. All rights reserved.
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