This paper describes the self—adjustment of some tuning-knobs of the generalized predictive controller(GPC).A three feedforward neural network was utilized to on line learn two key tuning-knobs of GPC,and BP algorith...This paper describes the self—adjustment of some tuning-knobs of the generalized predictive controller(GPC).A three feedforward neural network was utilized to on line learn two key tuning-knobs of GPC,and BP algorithm was used for the training of the linking-weights of the neural network.Hence it gets rid of the difficulty of choosing these tuning-knobs manually and provides easier condition for the wide applications of GPC on industrial plants.Simulation results illustrated the effectiveness of the method.展开更多
The relation between structures and properties of polyurethane are investigated by modern physical and chemical methods.The results obtained are as follows:the effects of the content of self-crosslinking agent on the ...The relation between structures and properties of polyurethane are investigated by modern physical and chemical methods.The results obtained are as follows:the effects of the content of self-crosslinking agent on the properties of polyurethane,i.e.,dispersion stability,dynamical viscoelasticity and mechanical properties are discussed.It is found that the optimum molar ratio of epichlorohydrin and diethylenetriamine is 1:2.A mois-展开更多
The Belt and Road Initiative contains the aspiration of Chinese nation to pursue ideological freedom and desire of strengthening international exchanges and cooperation. This paper takes the Belt and Road Initiative f...The Belt and Road Initiative contains the aspiration of Chinese nation to pursue ideological freedom and desire of strengthening international exchanges and cooperation. This paper takes the Belt and Road Initiative for example,emphasizing the interpretation of the inheritance and development of Chinese culture so as to study the importance of Culture Self-Consciousness in Chinese Philosophy,in the context of English globalization. That is to say,this paper stresses the spirits and the stand of nation 's demonstration on pursuing peace,cooperation and sustainable development in the civilization continuity from traditional China to the contemporary China,with practical philosophic view.展开更多
Chinese listed firms are characterized by a great magnitude of long-duration accounts receivable from controlling shareholders and their affiliates,and they often do not make bad debt allowances.On many occasions,thes...Chinese listed firms are characterized by a great magnitude of long-duration accounts receivable from controlling shareholders and their affiliates,and they often do not make bad debt allowances.On many occasions,these receivables are never collected.We find that firms with a great magnitude of accounts receivable demonstrate a low level of future profitability and low stock returns.It does not appear that the low earnings persistence of these firms is responsible for their poor future performance as predicted by the accrual anomaly,because the firms also report low concurrent earnings.In the context of the Chinese stock market,we interpret the results as being consistent with self-dealing through trade credit by controlling shareholders.This study contributes to the self-dealing literature by identifying a more subtle channel of expropriation of minority shareholders in China.展开更多
基金Supported by the National 863 CIMS Project Foundation(863-511-010)Tianjin Natural Science Foundation(983602011)Backbone Young Teacher Project Foundation of Ministry of Education
文摘This paper describes the self—adjustment of some tuning-knobs of the generalized predictive controller(GPC).A three feedforward neural network was utilized to on line learn two key tuning-knobs of GPC,and BP algorithm was used for the training of the linking-weights of the neural network.Hence it gets rid of the difficulty of choosing these tuning-knobs manually and provides easier condition for the wide applications of GPC on industrial plants.Simulation results illustrated the effectiveness of the method.
文摘The relation between structures and properties of polyurethane are investigated by modern physical and chemical methods.The results obtained are as follows:the effects of the content of self-crosslinking agent on the properties of polyurethane,i.e.,dispersion stability,dynamical viscoelasticity and mechanical properties are discussed.It is found that the optimum molar ratio of epichlorohydrin and diethylenetriamine is 1:2.A mois-
文摘The Belt and Road Initiative contains the aspiration of Chinese nation to pursue ideological freedom and desire of strengthening international exchanges and cooperation. This paper takes the Belt and Road Initiative for example,emphasizing the interpretation of the inheritance and development of Chinese culture so as to study the importance of Culture Self-Consciousness in Chinese Philosophy,in the context of English globalization. That is to say,this paper stresses the spirits and the stand of nation 's demonstration on pursuing peace,cooperation and sustainable development in the civilization continuity from traditional China to the contemporary China,with practical philosophic view.
基金the National Natural Science Foundation of China for financial support(grant number 70972010)
文摘Chinese listed firms are characterized by a great magnitude of long-duration accounts receivable from controlling shareholders and their affiliates,and they often do not make bad debt allowances.On many occasions,these receivables are never collected.We find that firms with a great magnitude of accounts receivable demonstrate a low level of future profitability and low stock returns.It does not appear that the low earnings persistence of these firms is responsible for their poor future performance as predicted by the accrual anomaly,because the firms also report low concurrent earnings.In the context of the Chinese stock market,we interpret the results as being consistent with self-dealing through trade credit by controlling shareholders.This study contributes to the self-dealing literature by identifying a more subtle channel of expropriation of minority shareholders in China.
