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With rapid development of microblog, more and more people are going to use microblog to transmit information and express their opinions. Therefore, predicting and monitoring the online hot-event tendency has become a significant support for our national security and development of society. Traditional prediction model tends to have a non-liner and unstable performance in time series. As a result,...
Conventional methods for safety analysis have problems in terms of correctness and efficiency. Using formal methods and fault injection techniques can improve consistency and correctness for safety process throughout the system's safety lifecycle. Yet existed methods for fault injection and safety analysis mainly think about single faults injection for system, seldom do with fault injection for multiple...
The shielding failure is the occurrence of a lightning stroke that bypasses the overhead shielding wires and strikes on the phase conductors. The accurate design to improve the shielding effect of transmission line to lightning is one of key problems in transmission line design. Some numerical analysis models for analysis of shielding failure performance were proposed and discussed, mainly including...
High growth is one of the salient features of listed corporations on Chinext. Utilizing the quarterly report data of 63 corporations listed on Chinext between 2009 and 2011, the thesis analyzes the impact of growth and bank credit on the trade credit behavior of listed corporations. The results show that the growth and bank Credit is positively correlated with the Trade Credit. The results also indicate...
This paper presents an in-depth modeling of a pressure-compensated flow control valve (PC valve) by making its physical meaning more understandable and analysable. Proper simplification is used to describe the internal principles of control laws. Theoretical analysis of the relation between the design parameter and the performance based on the valve model is described. The result of this method is...
Fuzzy-PID control is used in the Variable rate fertilization controlling system and the rule of the fuzzy control is determined. Based on the dynamic model of the Variable rate fertilization controlling system, MATLAB/Simulink is applied to simulate the torque and the rotation speed of the engine. The experimental results indicate that the proposed method is of simple arithmetic and real-time characteristics...
The anti-competitive effect of vertical integration is a main issue discussed in antitrust field. Based on the characteristics of Chinese aluminum industry and the vertical merging behavior of Chinalco, this paper discusses the anti-competitive effect of forward integration by a two-phase game model with upstream monopoly firms. The result shows that vertical integration has obvious foreclosure effect...
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