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Finding the key nodes of the network is one of the most important applications in Community Detection. This paper combined Centrality, Cluster Coefficient and PageRank ideas, establish the measurement system of key nodes and according to the Kendal correlation coefficient of each index to modify the measurement system. Finally, using the Fagin algorithm to carry on the key nodes of the multidimensional...
A metamaterial composed of two face-to-face symmetrical split-ring resonators and a cross-wire located on each side of a dielectric substrate is demonstrated. The retrieved refractive index from the scattering parameters show that the proposed structure can exhibit a broadband negative refraction passband from 41GHz to 62GHz with very low dispersion from 47GHz to 57GHz. In addition, the retrieved...
The application of mathematical model based on statistics is widely used in many fields, especially in evaluation subject. On wine quality evaluation, it requires in-depth analysis of the physical-chemical indicators about wine grapes and wine. In this paper, we established the models of fitting, analysis of variance (ANOVA), Q cluster analysis and the optimized method of principal component analysis...
Country risk is a quite important factor for international investment. Many institutions and researchers try to assess country risk by using numerous indicators and various evaluation models. This paper investigates the dynamic behavior of country risk in order to offer more detailed information of country risk to investors. First, country beta is taken as the proxy of country risk. Second, dynamic...
Drought is a harmful and headachy natural disaster in the world, which has caused considerable loss to agricultural production and economy per year with high frequency. It is therefore very important and necessary for drought monitoring over large scales by remotely sensed techniques. In order to establish physically meaningful water stress index, the SWIR bands with strong water absorption features...
As the world economic power and military strengthchange, a new round of contention for energy has started. What will be the sticking point is whether China can access to adequate oil resources safely in the new redistribution of energy resources which may impact China's oil imports and energy supply in the future. Based on the Herfindahl-Hirschman Index, in this paper we propose an improved methodology...
This paper presents the probabilistic logic model to compute the probability distribution of the nano gate states. The characterization is based on the Markov random field and statistic physics. The primary logic gates are probabilistically characterized. The effectiveness of the method is demonstrated by a full adder and an 8-bit adder. The analysis shows that the device probability distribution...
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