Journal of Liaoning Petrochemical University
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Econometric Analysis of Repercussion of Chinese Petroleum Industry
ZHOU Chang-mao,WANG Hai-yan
Abstract420)      PDF (156KB)(442)      
   
Industry repercussion effect is not only one of the foundations to measure the position of one industry in national economy system, but also a main basis for government to locate a leading industry. Through introducing the sensitivity degree coefficient and influencing power coefficient, the repercussion of Chinese petroleum industry has been measured. Furthermore, the strategic position of it in national economy was researched with econometric measures. The strategic attribute of petroleum industry was proved based on the studies above.
2011, 31 (3): 84-88. DOI: 10.3696/j.issn.1672-6952.2011.03.023
Reliability Analysis for Crack Propagation of Flotation Machine Impeller
GAO Hui,ZHOU Chang-mao, SUN Tie, ZHANG Su-xiang, SUN Zhuang
Abstract380)      PDF (239KB)(292)      
Based on the Pairs-Erdogan crack growth model and with the application of the moment and a crack limit equation of state, the reliability of the steam floating machine under the circumstance of random variable basic parameters was discussed, and a steam-floating impeller crack growth reliability model was established. The reliability of impeller crack propagation life was deduced, which is basically the same with the results of Monte-Carlo simulation. The result shows that the method can give a more accurate forecast results and is suitable for application.
2009, 29 (1): 54-56.