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The extant work on network analyses has thus far paid little attention to the heterogeneity in time lags and speed of information propagation along edges. In this paper, we study this novel problem, modeling the time dimension and lags on network edges, in the context of paper and patent citation networks where the variation in the speed of knowledge flows between connected nodes is apparent. We propose...
At present, the ceramic package packaging array charge-coupled device dimensions up to 144 mm*126mm*3mm (typical value), conventional mechanical shock fixture and tooling is not applicable needing to develop a dedicated fixture. In this paper, we mainly study the design of the mechanical shock fixture of the ceramic package for the large array CCD. The ansys finite element method was used to simulate...
Kraft paper is widely used in oil-paper transformer insulation. This type of cellulose insulation paper has many advantages, but deteriorates under the combined influence of a number of interrelated factors during the power transformer's long-term running. So modifications on insulation paper for power transformer are in great demand, and chemical modification of insulation materials is one of the...
The dynamic characteristics of the steam turbine speed governor system is one of the major factor that influence the security of the power system. It has important practical significance for the security of the power system to establish the detailed dynamic model of the steam turbine speed governor system through parameter identification. This paper starts from the actual needs of the modeling of...
Piezoelectric vibration energy harvester has the advantage of high power density, and is promising in self-powered wireless sensor networks. The electromechanical coupling model has been formulated for cantilever bimorph vibration energy harvester under capacitive loads using piezoelectric theory and Euler-Bernoulli beam theory. Simulink simulation is used to obtain the steady-state characteristics,...
What factors will affect the consumer's purchase decision-making is a very complex issue, it has also become a consumer behavior research focus. In this paper, the consumer online shopping from the reality of the technology acceptance model based on online consumer purchase decision-making model designed to enrich the content of this field of theoretical and practical development of e-commerce market...
A novel directional coupler from composite right/left-handed transmission line and artificial transmission line is presented in this paper. The proposed couplers with 6 dB, 10 dB, and 20 dB coupling coefficients are implemented with printed circuit board. The simulated and measured results are compared and analyzed. Simulated results agree well with measured results. The experimental results show...
Urban surface morphology characteristics mainly expressed by the shape of artificial building entities. Based on DLG data and field surveys, urban building entity model and point model of the vector-based surface model are constructed. In addition, from the view of exploratory spatial data analysis (ESDA) and spatial statistical analysis, a set of analysis and evaluation methods of the characteristics...
Many content-based 3D model retrieval techniques have been proposed in the last decade. Compared with other methods, light field descriptor (LFD) is generally acknowledged as the best model representation. Taking LFD as example, we analyze the disadvantage of the model descriptors based on visual similarity and propose a modified descriptor which preserves the exact geometrical features of the model...
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