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To improve the coal working face gas emission forecasting, an approach to determine the most suitable input factors of the coal working face gas emission forecaster is suggested based on the variance ratio testing method The necessary eliminations or adding of input factors are determined by F test for the forecasting variances before and after elimination or adding. After investigating on all cases,...
Based on the present existing problems of experimental course in Architectural Environment and Equipment Engineering, the paper conducts the reform and innovation from the teaching mode, case teaching, interactive teaching etc. and introduces the scene experience type teaching mode combined with the research in the aspects of practical experience in recent years. The article constructs the “theoretical...
A computer program based on existing one dimensional ejector theory has been developed to carry out a study on performance of the system. The performance of solar ejector refrigerant system(SERS) offer air conditioning for supermarket building are predicted under a climatic conditions of zhengzhou region, the results show that the ηsc, COP and μ of the system change in time sequence, and the average...
The study attempted to explore protective effects of procedural justice on job insecurity and job attitudes of Chinese workers in the face of an impending organizational change. In a large-scale state-owned telecom company and its four subsidiary companies in China where a fundamental organizational change was about to take place, 592 employees were randomly sampled and surveyed. The results of hierarchical...
To accurately predict the non-stationary time series, an approach based on integration of wavelet transform, PSO (Particle Swarm Optimization) and SVM (Support Vector Machine) is proposed. Wavelet decomposition is used to reduce the complexity of time series. Different components are predicted by their corresponding SVM forecasters, respectively, after wavelet transform. The final forecasting result...
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