This paper investigates in detail the dynamics of the modified KdV equation with self-consistent sources, including characteristics of one-soliton, scattering conditions and phase shifts of two solitons, degenerate ca...This paper investigates in detail the dynamics of the modified KdV equation with self-consistent sources, including characteristics of one-soliton, scattering conditions and phase shifts of two solitons, degenerate case of two solitons and ＂ghost＂ solitons, etc. Co-moving coordinate frames are employed in asymptotic analysis.展开更多
This paper presents the solution of regulating the wind rate automatically by means of fuzzy control technology and implementing it with PLC (programmable logical controller) under the circumstance of many influence f...This paper presents the solution of regulating the wind rate automatically by means of fuzzy control technology and implementing it with PLC (programmable logical controller) under the circumstance of many influence factors, which exists in the axial flow fans wind rate regulation system during the process of mine ventilation, and has difficulty in modifying the mathematic model to obtain the satisfied result by normal control ways. According to this analysis, the intelligent and analytic treatment of fuzzy controller has been made and fuzzy control scheme involving self regulation divisor and intelligent integral has been deeply proposed. Test result shows that this system based on the scheme above is obviously prior to others in its responsibility such as high speed, overshoot, control precision and robustness. The system furnishes the great reliability of mine working safety and fans running efficiency.展开更多
Adopting the strategy of fuzzy control with self tuning factor within whole universe of discourse, a kind of fuzzy control method for jigger discharging is put forward. This method has many advantages over the convent...Adopting the strategy of fuzzy control with self tuning factor within whole universe of discourse, a kind of fuzzy control method for jigger discharging is put forward. This method has many advantages over the conventional PID controller in terms of response speed, stability and robustness. It is effective to restrain the jig bed from over thick or empty, and the stability of the bed is markedly improved. The good results are obtained in factory tests.展开更多
The essay analyzes in a sociological and political science perspective several key aspects of the global economic-financial crisis which have either been neglected or not sufficiently analyzed in most scientific and m...The essay analyzes in a sociological and political science perspective several key aspects of the global economic-financial crisis which have either been neglected or not sufficiently analyzed in most scientific and media accounts. It focuses on two basic aspects： a） the coguitive framework prevailing among U. S. corporate, governmental and intellectual elites, i.e. the neodiberal conception of the self-regulating market, which deeply influenced their behaviour both in the market and in the political arena and b ） the mechanisms of pressure politics and political lobbying in the US Congress that managed to influence key decisions concerning de-regulation policy, in so far as to weaken the existing systems of institutional controls and to prevent new rules for new financial products. The last section evaluates President Obama＇s economic strategy and regulation policy in the light of the two basic aspects analysed in the first two sections, i.e. the action of lobbies and the influence of mainstream neo-hberal economics. The aim of the essay is to integrate the economic literature with a sociological and political analysis in order to gain clearer knowledge of the complex mechanisms of the crisis, which in turn can contribute to identifying key obstacles in implementing pohcies aimed at enforcing new forms of regulation of global markets.展开更多
基金The project supported by National Natural Science Foundation of China under Grant Nos.10371070 and 10671121the Foundation of Shanghai Education Committee for Shanghai Prospective Excellent Young Teachers
文摘This paper investigates in detail the dynamics of the modified KdV equation with self-consistent sources, including characteristics of one-soliton, scattering conditions and phase shifts of two solitons, degenerate case of two solitons and ＂ghost＂ solitons, etc. Co-moving coordinate frames are employed in asymptotic analysis.
文摘This paper presents the solution of regulating the wind rate automatically by means of fuzzy control technology and implementing it with PLC (programmable logical controller) under the circumstance of many influence factors, which exists in the axial flow fans wind rate regulation system during the process of mine ventilation, and has difficulty in modifying the mathematic model to obtain the satisfied result by normal control ways. According to this analysis, the intelligent and analytic treatment of fuzzy controller has been made and fuzzy control scheme involving self regulation divisor and intelligent integral has been deeply proposed. Test result shows that this system based on the scheme above is obviously prior to others in its responsibility such as high speed, overshoot, control precision and robustness. The system furnishes the great reliability of mine working safety and fans running efficiency.
文摘Adopting the strategy of fuzzy control with self tuning factor within whole universe of discourse, a kind of fuzzy control method for jigger discharging is put forward. This method has many advantages over the conventional PID controller in terms of response speed, stability and robustness. It is effective to restrain the jig bed from over thick or empty, and the stability of the bed is markedly improved. The good results are obtained in factory tests.
文摘The essay analyzes in a sociological and political science perspective several key aspects of the global economic-financial crisis which have either been neglected or not sufficiently analyzed in most scientific and media accounts. It focuses on two basic aspects： a） the coguitive framework prevailing among U. S. corporate, governmental and intellectual elites, i.e. the neodiberal conception of the self-regulating market, which deeply influenced their behaviour both in the market and in the political arena and b ） the mechanisms of pressure politics and political lobbying in the US Congress that managed to influence key decisions concerning de-regulation policy, in so far as to weaken the existing systems of institutional controls and to prevent new rules for new financial products. The last section evaluates President Obama＇s economic strategy and regulation policy in the light of the two basic aspects analysed in the first two sections, i.e. the action of lobbies and the influence of mainstream neo-hberal economics. The aim of the essay is to integrate the economic literature with a sociological and political analysis in order to gain clearer knowledge of the complex mechanisms of the crisis, which in turn can contribute to identifying key obstacles in implementing pohcies aimed at enforcing new forms of regulation of global markets.
