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Search Results: 1 - 10 of 88120 matches for " Wei Xu "
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The Study of WeChat Payment Users Willingness Factor  [PDF]
Wei Xu
Journal of Service Science and Management (JSSM) , 2017, DOI: 10.4236/jssm.2017.103021
Abstract: Based on the user’s perceived value and perceived risk, this paper constructs the model of the willingness to use the willingness to pay the user, designs the corresponding questionnaire and conducts the online sample survey, and uses Excel and SPSS20.0 to analyze the theoretical model and research hypothesis, then puts forward some suggestions to promote the development of WeChat payment platform, hoping to provide a reference for the development of WeChat payment.
The Two-Dimensional Simulation Study of Flow Pattern near Guiding Wall of Oxidation Ditch  [PDF]
Wei Chen, Mingming Xu
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.29096
Abstract: Guiding wall is used to change the flow of the oxidation ditch as supporting structure, it widely uses eccentric setting, and its setting parameters are mostly empirical judgments. According to fluent software that simulates the velocity distribution of the guiding wall, to discuss the settings of the guiding wall in different length of downstream extension, eccentricity and guiding wall radius, so to work out its optimized settings.
A New Communication Framework for Networked Mobile Games  [PDF]
Chong-wei Xu
Journal of Software Engineering and Applications (JSEA) , 2008, DOI: 10.4236/jsea.2008.11004
Abstract: This paper introduces a two-layer UDP datagram-based communication framework for developing networked mobile games. The framework consists of a physical layer and a data-link layer with a unified interface as a network communication mechanism. A standalone two-player mobile game, such as a chess game and the like, can be easily plugged on to the communication framework to become a corresponding networked mobile game.
How Fast a Hydrogen Atom can Move Before Its Proton and Electron Fly Apart?  [PDF]
Wei-Xing Xu
Optics and Photonics Journal (OPJ) , 2011, DOI: 10.4236/opj.2011.12006
Abstract: In this paper we discussed the behavior of a hydrogen atom in moving and found there is a speed threshold for hydrogen atom. As long as the speed of hydrogen reaches or beyond its speed threshold, the proton and electron in hydrogen atom will fly apart. We also discussed the effect of the movement of hydrogen atom on its absorption spectrum which is important in spectrum analysis.
Light: Duality or Discontinuity?  [PDF]
Wei-Xing Xu
Optics and Photonics Journal (OPJ) , 2013, DOI: 10.4236/opj.2013.31016

Based on the perturbation theory of quantum mechanics, we found that the time for a system to absorb a photon is the period of the light wave. This result gives us an exact definition of a photon, that is, a photon is just a single period of light wave. Furthermore, the detail analysis of the emission and absorption of the light wave in a system tells us that the light wave is not continuous as we believed before but discontinuous instead. Based on this result, we elucidate the origin of the particle-wave duality of the light/electromagnetic wave.

Justice Could Be Highlighted in the Perspective of Historical Materialism  [PDF]
Guowang Xu, Wei Zheng
Advances in Historical Studies (AHS) , 2016, DOI: 10.4236/ahs.2016.53013
Abstract: How to understand the relationship between historical materialism and Marx’s idea of justice? The well-know Canadian philosopher, Kai Nielsen, “who is indeed closer to Marxist moralism in substantive conclusion, but, methodologically speaking, it is more in the spirit of Marxist immoralism” (Nielsen,1987: p. 114), points out Marx’s ideological system is not a valueless theory of science and society, and the facts and value judgments can be unified in Marx’s theory. Nielsen reveals the profound idea of justice as the basic dimension of historical materialism, and the internal unity of fact judgment and value judgment in a dual dimensions, based on the perspective of historical materialism, showing “justice could be highlighted in the perspective of historical materialism”.
Why the Speed of Light (c) Keeps Constant?  [PDF]
Wei-Xing Xu
Optics and Photonics Journal (OPJ) , 2017, DOI: 10.4236/opj.2017.74006
Abstract: In this paper we demonstrate that the “pure” spacetime and electromagnetic spacetime are bound together. The “pure” spacetime and electromagnetic spacetime all behave as the wave in character and furthermore, both of them change at the same speed. Based on the understanding of the “pure” spacetime and electromagnetic spacetime, we give out the reasonable explanation why the speed of light keeps constant and how the gravity is created among the matters. In addition, some practical applications of the concepts developed in this work are proposed.
Application of Single Channel Blind Separation Algorithm Based on EEMD-PCA-RobustICA in Bearing Fault Diagnosis  [PDF]
Wei Xu, Xiangzhou Yan
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2017, DOI: 10.4236/ijcns.2017.108B015
Aiming at the problem that ICA can only be confined to the condition that the number of observed signals is larger than the number of source signals; a single channel blind source separation method combining EEMD, PCA and RobustICA is proposed. Through the eemd decomposition of the single-channel mechanical vibration observation signal the multidimensional IMF components are obtained, and the principal component analysis (PCA) is performed on the matrix of these IMF components. The number of principal components is determined and a new matrix is generated to satisfy the overdetermined blind source separation conditions, the new matrix input RobustICA, to achieve the separation of the source signal. Finally, the isolated signals are respectively analyzed by the envelope spectrum, the fault frequency is extracted, and the fault type is judged according to the prior knowledge. The experiment was carried out by using the simulation signal and the mechanical signal. The results show that the algorithm is effective and can accurately diagnose the location of mechanical fault.
The Fundamental Mechanism for the Collision/Pressure Induced Optic Effect  [PDF]
Wei-Xing Xu
Optics and Photonics Journal (OPJ) , 2018, DOI: 10.4236/opj.2018.84009
Abstract: In this work, the fundamental mechanism regarding the collision and pressure induced optic effect is elucidated. Based on the concept of the collision-relaxation/the pressure-release induced optic effect put forth here, a new laser technology may be developed. Furthermore, our work also makes the understanding the photon involved chemical reaction become much clear and rationalized.
Wei Xu
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811019970
Abstract: In the title compound, [Co2(C12H8O12)(C12H8N2)2]n, each 3,6-dicarboxycyclohexane-1,2,4,5-tetracarboxylate (H2chhc4 ) anion has crystallographically imposed C2 symmetry and bridges four six-coordinate Co atoms, generating polymeric chains running along [010]. These chains are further extended into a three-dimensional network via O—H...O hydrogen-bonding interactions and interchain π–π stacking interactions [centroid–centroid distance = 3.662 (2) ].
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