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Search Results: 1 - 10 of 72990 matches for " Wei Cheng "
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Study on Relationship between Visitor Value, Degree of Satisfaction and Loyalty in Musical Festival Activity  [PDF]
Cheng-Wei Chung
Journal of Service Science and Management (JSSM) , 2014, DOI: 10.4236/jssm.2014.76036
Abstract: Compared with other types of festival activities, the musical festivals can attract large crowds of visitors easily and quickly. When the value experience of visitors is high, their satisfaction and loyalty will also be higher. In activities, the high degree of satisfaction means higher loyalty. The hypothesis model in this study indicates the causal relationship between visitor value and degree of satisfaction, as well as the significant impact of visitor value on loyalty in musical festival activities. However, though the musical festival activities can attract visitor stream very quickly, the activity organizers should think more about how to make the visitors willing to come, especially when most visitors for these activities make a special trip. For these visitors, the degree of experience of the visitors should be emphasized, because this will be the most important reason influencing visitors’ feeling about the activities.
A User Proprietary Obfuscate System for Positions Sharing in Location-Aware Social Networks  [PDF]
Wei Cherng Cheng, Masayoshi Aritsugi
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.35002

A user’s trajectory can be maliciously monitored by adversaries when they share the positions in location-aware social networking applications which require users to update their own locations continuously. An adversary infers user’s locations from the trajectories, and gleans user’s private information through them via location-aware social networking applications and public available geographic data. In this paper, we propose a user proprietary obfuscate system to suit situations for position sharing and location privacy preserving in location-aware social network. Users transform the public available geographic data into personal obfuscate region maps with pre-defined profile to prevent the location leaking in stationary status. Our obfuscation with size restricted regions method tunes user’s transformed locations fitting into natural movement and prevents unreasonable snapshot locations been recorded in the trajectory.

Pinning Forces in Superconductors from Periodic Ferromagnetic Dot Array  [PDF]
Wei Jiang Yeh, Bo Cheng, Tony Ragsdale
Journal of Modern Physics (JMP) , 2010, DOI: 10.4236/jmp.2010.16052
Abstract: Using the London equation, we derive a formula by which the pinning force from magnetic dots can be cal-culated. We numerically calculate the interaction between ferromagnetic dots and vortices in type II super-conductors under various conditions. It is found that the pinning force of the magnetic dot with 50 nm thick-ness reaches 3.5 × 10-11 N that is one order magnitude stronger than the intrinsic pinning force in cuprate at 77 K. We investigate various parameter dependences of the pinning force. It is found that the most effective way to increase the pinning force is to increase the thickness of the dot. The pinning force is weakly de-pendent on both the size and magnetic permeability of the dots. When temperature increases, the pinning force linearly decreases. And when the magnetic field increases, the attraction force increases linearly in the low field region.
Research on the Relationship among Government Regulations, Strategy Preference and Manufacturing Performance  [PDF]
Fa-Xin Cheng, Wei Wang
Journal of Service Science and Management (JSSM) , 2012, DOI: 10.4236/jssm.2012.51005
Abstract: Based on the environment-strategy-performance paradigm, the paper constructs a theoretical framework on the rela- tionship among government regulations, manufacturing strategy and performance. Using structural equation model and a sample of 135 SME of Jiangsu Province, this paper examines the relationship among government regulations, manu- facturing strategy and performance, the result of which shows that government regulations have a significant positive effect on cost, quality and innovation; cost, quality and innovation influence financial performance significantly and positively; quality and innovation have a significant positive effect on non-financial performance, whereas cost has not. Finally, suggestions for SME-development promoting policy and manufacturing strategy selection are putting forward.
Theoretical Review on CP Violation in Rare B decays
Chiang, Cheng-Wei
High Energy Physics - Phenomenology , 2008,
Abstract: We discuss several issues related to direct CP violation in rare $B$ meson decays. We review the use of CP asymmetries in extracting information of strong and weak phases, how the experimental data fit into the overall picture, and the current status of the $K \pi$ puzzle. We also examine the flavor symmetry assumption using closely related decay modes and extract the weak phase $\gamma$ from certain $B \to K^* \pi$ and $\rho K$ decays.
4-Acetamido-3-nitrophenyl acetate
Zhun Gu,Wei Cheng
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809015797
Abstract: In the molecule of the title compound, C10H10N2O5, intramolecular C—H...O interactions result in the formation of a five- and a six-membered ring. The five-membered ring is planar and is oriented at a dihedral angle of 0.34 (3)° with respect to the plane of the aromatic ring, while the six-membered ring has a twist conformation. In the crystal structure, intermolecular C—H...O interactions link the molecules into chains.
Ethyl N′-[(E)-4-hydroxybenzylidene]hydrazinecarboxylate at 123 K
Xiang-Wei Cheng
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808019818
Abstract: The molecule of the title compound, C10H12N2O3, adopts a trans configuration with respect to the C=N bond. The dihedral angle between the benzene ring and the hydrazinecarboxylate plane is 14.6 (1)°. Molecules are linked into a three-dimensional network by O—H...O, N—H...O and C—H...O hydrogen bonds, and by C—H...π interactions.
Methyl N′-[(E)-4-hydroxy-3-methoxybenzylidene]hydrazinecarboxylate
Xiang-Wei Cheng
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808019788
Abstract: The molecule of the title compound, C10H12N2O4, adopts a trans configuration with respect to the C=N double bond. The dihedral angle between the benzene ring and the hydrazinecarboxylate mean plane is 36.54 (6)°. The molecules are linked into a two-dimensional network by intermolecular O—H...O, N—H...O and O—H...N hydrogen bonds, and by aromatic π–π stacking interactions [ring-centroid separation 3.7689 (9) ].
(E)-Methyl N′-(4-hydroxybenzylidene)hydrazinecarboxylate
Xiang-Wei Cheng
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808018096
Abstract: In the title compound, C9H10N2O3, the hydroxy group and the C=N—N unit are coplanar with the benzene ring. The benzene rings of inversion-related molecules are stacked with their centroids separated by a distance of 3.7703 (9) , indicating weak π–π interactions. In the crystal structure, C—H...O, O—H...O, N—H...O and C—H...O hydrogen bonds link molecules into a infinite two-dimensional network along the a axis.
2-(1-Adamantyl)-4-bromoanisole at 123 K
Xiang-Wei Cheng
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808016772
Abstract: In the title compound [systematic name: 2-(1-adamantyl)-4-bromo-1-methoxybenzene], C17H21BrO, two weak intramolecular C—H...O hydrogen bonds influence the molecular conformation. The crystal packing exhibits C—H...π interactions, with a relatively short intermolecular C...Cg contact of 3.568 (5) , where Cg is the centroid of the benzene ring. The crystal studied exhibited inversion twinning.
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