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Search Results: 1 - 10 of 61092 matches for " Yanfei Yu "
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Research on ZigBee Wireless Sensors Network Based on ModBus Protocol  [PDF]
Chengbo YU, Yanfei LIU, Cheng WANG
Wireless Sensor Network (WSN) , 2009, DOI: 10.4236/wsn.2009.11007
Abstract: The information transmission is transparent for the user in the ZigBee wireless sensors network, which are lack of interactivity and self-constrain. The information in the ZigBee wireless sensors network can not be viewed in a real time by a friendly interface. Modbus protocol is embedded into ZigBee stack, in this way, we can implement interaction well and the information can be viewed in a friendly interface. The paper presents the measures to embed the Modbus protocol into the ZigBee stack provided by Chipcon company, which contains address bound mechanism, information centralized storage, and flexible monitoring, by which we can monitor the real time information from the ZigBee wireless network and use some instructions to control the remote device in a friendly interface, which can be used well in the middle and small ZigBee monitoring wireless sensors network. We implement it in the plant physiological ecology monitoring system.
Simulation of Particle Agglomeration in Turbulent Flow  [PDF]
Peiling Yan, Deshuai Sun, Yang Yu, Xiankun Shen, Yanfei Qi
Journal of Materials Science and Chemical Engineering (MSCE) , 2018, DOI: 10.4236/msce.2018.64006
Turbulence agglomeration is an effective way to promote agglomeration of particles. The coupling of classic Eulerian-Eulerian two-fluid model with population balance model was used to simulate the agglomeration process. The simulation results show that turbulence agglomeration could reduce 56% of emission of fine particles less than 10 μm. Smallest particles less than 2 μm were easily be removed, while the removal values of particles with medium size was very low. The suitable spacing of vanes was benefit to remove the fine particles from gas flow. Small angle of the vanes could improve the removal of fine particles.
The Influence of Entrepreneurial Social Responsibility on the Strategic Decision-Making Process  [PDF]
Yanfei Sha
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.51B010
Abstract: Entrepreneurs manage enterprise strategic decision. Owing to low quality decision,entrepreneurs bring serious problems to the society. The corporate social responsibility has been rising, and it also has influenced the entrepreneurs' decision environment. This paper refines the deep influence factors of  strategic quality and analyzes the influence mechanism of entrepreneurial social responsibility on the strategic decision-making. The results show that high cognition and sense of entrepreneurial social responsibilitycan enhance the quality of enterprise strategic decision. So enterprise can get understanding and supporting from stakeholders.
Application of Moral Investment of Enterprise in Constructing Harmonious Society  [PDF]
Sha Yanfei
iBusiness (IB) , 2013, DOI: 10.4236/ib.2013.51B011
Abstract: The enterprise is the mainbody of the construction of harmonious society. The pivot to construct the harmonious society is to increase the moral investment.The moral investment should be operational and it can be done in three steps. The first step is to form the moral view. The second step is to make the decision on morality. The last step is to grip the moral carrier.
Fluid Flow and Heat Transfer Charateristics in a 180-deg Round Turned Channel with a Perforated Divider  [PDF]
Rui Xu, Rui Xu, Jinliang Hou, Li Wang, Yanfei Yu, Jiaxing Wei, Changfeng Li
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.26049

This study provided a new configuration of the 180-deg round turned channel with a perforated divider, as well as numerically investigated the effect of perforations, including the diameter of perforation and the angel of perforation, on the fluid flow and heat transfer. The numerical results appeared in good agreement with previous experimental data under the same operating conditions. The results indicated that large size and positive angle of perforation changed the fluid flow pattern and the local Nusselt-number distribution fundamentally. It is noteworthy that a more uniform distribution of Nusselt-number was achieved by increasing the diameter of perforation.

An Introduction of Researches and Theory of Organizational Ethics Climate

Wang Yanfei,Zhu Yu,

心理科学进展 , 2006,
Abstract: Ethical climate is generally defined as a psychological construct that is based on the aggregation of individual perceptions of what is ethical conduct in the organization, and it consists of workers' feelings, attitudes, and behavioral tendencies measured by their perceptions. This article discussed and analyzed the most important aspects about the theory and researches of organizational ethics climate in recent years, presenting the researches of origin of the concept, formation procedure, construct and measurement, antecedents, affecting models between ethical climate and organizational performance. The authors discussed theoretical and implications of the new research directions in our country and some suggestions for future research are raised.
An Introduction of Researches and Theory of Organizational Innovation Climate

Wang Yanfei,Zhu Yu,

心理科学进展 , 2006,
Abstract: organizational innovation climate is the perception employees hold about innovation in the organization and it consists of workers' feelings, attitudes, and behavioral tendencies measured by their perceptions. The purpose of this paper is to discuss some important aspects about the theory and research of organizational innovation climate, presenting the origin of the concept,formation procedure, construct and measurement, summarizes some drawbacks in this field, several interesting directions for future research are raised.
An Introduction of Researches and Theory of Social Loafing

Wang Yanfei,Zhu Yu,

心理科学进展 , 2006,
Abstract: Social loafing is a reduction in motivation and effort when individuals work collectively compared with when work individually or coactively. The purpose of this paper is to discuss some important aspects about the theory and research of social loafing, presenting the concept, origin and development, theorical explanation, antecedents, formation models, summarizes some drawbacks in this field, several interesting directions for future research are raised.
Uncertainties in the Deprojection of the Observed Bar Properties
Yanfei Zou,Juntai Shen,Zhao-Yu Li
Physics , 2014, DOI: 10.1088/0004-637X/791/1/11
Abstract: In observations, it is important to deproject the two fundamental quantities characterizing a bar, i.e., its length ($a$) and ellipticity ($e$), to face-on values before any careful analyses. However, systematic estimation on the uncertainties of the commonly used deprojection methods is still lacking. Simulated galaxies are well suited in this study. We project two simulated barred galaxies onto a 2D plane with different bar orientations and disk inclination angles ($i$). Bar properties are measured and deprojected with the popular deprojection methods in the literature. Generally speaking, deprojection uncertainties increase with increasing $i$. All the deprojection methods behave badly when $i$ is larger than $60^\circ$, due to vertical thickness of the bar. Thus, future statistical studies of barred galaxies should exclude galaxies more inclined than $60^\circ$. At moderate inclination angles ($i\leq60^\circ$), 2D deprojection methods (analytical and image stretching) and Fourier-based methods (Fourier decomposition and bar-interbar contrast) perform reasonably well with uncertainties $\sim10\%$ in both the bar length and ellipticity. Whereas the uncertainties of the 1D analytical deprojection can be as high as $100\%$ in certain extreme case. We find that different bar measurement methods show systematic differences in the deprojection uncertainties. We further discuss the deprojection uncertainty factors with the emphasis on the most important one, i.e., the 3D structure of the bar itself. We construct two triaxial toy bar models that can qualitatively reproduce the results of the 1D and 2D analytical deprojections; they confirm that the vertical thickness of the bar is the main source of uncertainties.
Research of Big Data Based on the Views of Technology and Application  [PDF]
Zan Mo, Yanfei Li
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.54021
Abstract: In the era of big data, large amounts of data affect our work, life and study, even national economic development. It provides a new way of thinking and approaches to analyze and solve problems, which gradually becomes a hot research. Based on describing the concept and characteristics of big data, this paper describes the development of technologies in big data analysis and storage and analyses the trends and different values in commercial applications, manufacturing, biomedical science and other applications. At last, the authors sum up the existent challenges of big data applications and put forward the view that we should deal with big data challenges correctly.
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