Both Content analysis and link, analysis have its advantages in measuring relationships among documents. In this paper. we propose a new method to combine these two methods to compute the similarity of research papers...
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ISBN:
(纸本)9783540881919
Both Content analysis and link, analysis have its advantages in measuring relationships among documents. In this paper. we propose a new method to combine these two methods to compute the similarity of research papers so that we can do clustering of these papers more accurately. In order to improve the efficiency of similarity calculation, we develop a strategy to deal with the relationship graph separately, without affecting the accuracy. We also design an approach to assign different weights to different links to the papers, which can enhance the accuracy of similarity calculation. The experimental results conducted oil ACM data Set show that our new algorithm. S-SimRank, outperforms other algorithms.
The deoxidation experiments of liquid iron were carried out in the high temperature molybdenum wire furnace by adding SiMg alloy, Al and combination of both. At the same time, the additional sequence of SiMg and Al wa...
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The deoxidation experiments of liquid iron were carried out in the high temperature molybdenum wire furnace by adding SiMg alloy, Al and combination of both. At the same time, the additional sequence of SiMg and Al was changed in the experiments. The contents of dissolved and total oxygen and residual magnesium were measured and change of inclusions in molten iron over time was investigated. The results indicate that the limit of deoxidization by the combination of 0.02% (mass fraction) SiMg and 0.03% (mass fraction) Al is comparable with 0.05wt% SiMg only and the yield of Mg in the molten iron treated by the combination is improved greatly at 1873 K. In the case of SiMg/Al deoxidation, the change of inclusions amount in samples over time is consistent with that obtained by only SiMg. The change of inclusions amount in samples over time in case of Al/SiMg deoxidation is consistent with that obtained by only Al.
A statistical analysis on the compositions of inclusions in high carbon wire rod produced by one steel company was conducted. And the compositions of low melting point inclusions of Al2O3-SiO2-MgO-CaO-MnO system in a ...
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A statistical analysis on the compositions of inclusions in high carbon wire rod produced by one steel company was conducted. And the compositions of low melting point inclusions of Al2O3-SiO2-MgO-CaO-MnO system in a high carbon wire rod steel with Al-Si-Mn deoxidization were calculated and analyzed by the thermodynamic software FactSage. In the low melting point zone of the Al2O3-SiO2-MgO-CaO-MnO system for a high carbon wire rod steel, the Al2O3 content should reach 56%, and CaO 20%~30%.
Analyses on large deformation, high strain-rate and fracture with meshless method need not division of elements, which can avoid grid erode and complex reconstruction process and improve the computational efficiency a...
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Analyses on large deformation, high strain-rate and fracture with meshless method need not division of elements, which can avoid grid erode and complex reconstruction process and improve the computational efficiency and accuracy. Based on studying calculation control equations and shape function interpolation with RKPM for penetration process, the Johnson-Cook constitutive model of the metal projectile body and Johnson-Holmquist-Concrete material cumulative damage model were introduced into RKPM and the process analysis of metal projectile body penetrating into of concrete with RKPM was achieved. Calculated results with RKPM are exactly the same as those with finite element method. But as for the penetration fracture problems, by coarctating meshes to improve the computational accuracy and other areas, RKPM is easier to carry out than the finite element method.
GML expresses geographic information in text, and it provides an extensible and standard way of spatial information encoding. At the present time, the management of GML data is in terms of document. By this way, the i...
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With the development of economy, Shanghai, the biggest city of China, suffers from severe traffic congestion. The elevated expressways in downtown Shanghai are highly clogged during peak hours as well as off-peak hour...
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Si-N-O films have drawn researcher's much attention recently due to their potential superiority in blood compatibility of biomaterials. In this paper, Si-N-O films were synthesized on 〈100〉 silicon substrates by p...
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The hot deformation behavior of the pre-extruded aluminum alloy 2024 was investigated by compression tests at temperature 300-450°C and strain rate 0.01-50s-1. The results indicated that the flow stress decreased...
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ISBN:
(纸本)9788957081525
The hot deformation behavior of the pre-extruded aluminum alloy 2024 was investigated by compression tests at temperature 300-450°C and strain rate 0.01-50s-1. The results indicated that the flow stress decreased with the increasing deformation temperature and decreasing strain rate. The true stress-true strain curves had different characters at the different temperature range. At the lower temperature (300-340°C), the stress softening occurred after a peak stress at a small strain, and the stress approach a steady-state at the higher temperature (380-450°C). Based on experimental data, the constants of the sinh-Arrhenius constitutive equation were calculated.
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