Classroom teaching is a basic approach to complete the teaching mission, is also a key link to ensure the quality of teaching. The discretion of the teacher classroom control ability is the key to the success of class...Classroom teaching is a basic approach to complete the teaching mission, is also a key link to ensure the quality of teaching. The discretion of the teacher classroom control ability is the key to the success of classroom teaching. Ability to improve depends on teachers＇ language skills and demonstrate ability to improve, to delve into teaching material carefully to strengthen their own learning ability, to master a variety of teaching methods, pay attention to details of classroom teaching, teachers＇ teaching creativity into full play.展开更多
Taxation plays a major role in both market economics and Islamic economics. The difference is that in market economics, the tax system has evolved throughout the centuries in order to address the constant change in ma...Taxation plays a major role in both market economics and Islamic economics. The difference is that in market economics, the tax system has evolved throughout the centuries in order to address the constant change in market-based societies. In Islamic economics, however, the tax system bases on the writings of the Qur＇an and the principles of shariah. As a result, it did not flourish as the needs of Islamic society changed. Therefore, governments in Islamic countries that seek to follow Islamic law are facing major economic challenges. Recently, some Islamic scholars have asserted that Islamic governments can go beyond the explicit instructions of the Qur＇an and impose taxes as needed. They justify their arguments based on the interpretation of Qur＇anic verses. This paper briefly compares both rationality and the methods of taxation in both market economics and Islamic economics, and further elaborates on the shortcomings of the original Islamic tax laws.展开更多
Enterprise Management Innovation has been a topic of concern to the business community and holds the same opinions to adhere to corporate management for innovation, but how to make companies management innovation beco...Enterprise Management Innovation has been a topic of concern to the business community and holds the same opinions to adhere to corporate management for innovation, but how to make companies management innovation becomes the business people must face. I believe that： enterprise management innovation is the innovation of the modem enterprise system, enterprise management innovation is necessary not only to establish modem corporate governance institutions, but also to establish a sound management system. Based on this idea, the purpose of this paper is to explore the enterprise management innovation, a true reflection of the necessity and creative approach to business management innovation. Through analysis, the enterprise management innovation is the scientific concept of development of specific applications in the field of enterprise management. Enterprise management innovation is the development of internal demand point of view, hoping to be helpful for Chinese enterprises to occupy a place in the fierce competition in the international market.展开更多
A new trajectory generation for heat load test is proposed based on gauss pseudospectral method within limit range. Firstly,with multiple path constraints and flight task requirements taken into consideration, heat lo...A new trajectory generation for heat load test is proposed based on gauss pseudospectral method within limit range. Firstly,with multiple path constraints and flight task requirements taken into consideration, heat load parameters are introduced into the dynamics equations. In order to solve the problem of generating such a trajectory within limit range rapidly, the dynamics equations have been normalized by Earth related parameters. Secondly, since the gauss pseudospectral method is just employed to solve the discrete nonlinear programming problem, transformations are developed, which can relate the Lagrange multipliers of the discrete nonlinear programming problem to the costates of the continuous optimal control problem. In addtion, another approach of trajectory generation by tracking the given heat rate is also presented. Finally, simulation results with common aero vehicle(CAV-H) show that the trajectories obtained by both methods can well perform the heat load test with high stagnation heating rate and the large total aeroheating amount; meanwhile, gauss pseudospectral method is better than the compared one in the given range. Furthermore, the 3-D trajectory states and control variables, angle of attack and bank, which are generated by gauss pseudospectral method, can change smoothly.展开更多
Editor＇s comments Formaldehyde （HCHO） emitted from chemical manufacturing plants including methanol-gasoline/diesel fuel vehicles and the construction and decoration materials is one of the major air pollutions, wh...Editor＇s comments Formaldehyde （HCHO） emitted from chemical manufacturing plants including methanol-gasoline/diesel fuel vehicles and the construction and decoration materials is one of the major air pollutions, which induces photochemical pollution and hazards human health. Great efforts have been made for the reduction or control of the emission of HCHO to satisfy the stringent environmental regulations. Now, a new study supported by the National Natural Science Foundation of China reports mesoporous manganese oxide with novel nanostructures for the decomposition of HCHO. The obtained manganese oxide nanomaterials showed high catalytic activities for oxidative decomposition of HCHO at low temperatures. Complete conversion of HCHO to CO2 and H2O were achieved, and no harmful by- products were detected in effluent gases. The catalytic activities of these nanomaterials are significantly higher than those of previously reported manganese oxide octahedral molecular sieve （OMS-2） nanorods , MnO x powders, and alumnina-supported mangnaese-palladium oxide catalysts. These results provide a new route for the removal of HCHO and other air pollutions.展开更多
文摘Classroom teaching is a basic approach to complete the teaching mission, is also a key link to ensure the quality of teaching. The discretion of the teacher classroom control ability is the key to the success of classroom teaching. Ability to improve depends on teachers＇ language skills and demonstrate ability to improve, to delve into teaching material carefully to strengthen their own learning ability, to master a variety of teaching methods, pay attention to details of classroom teaching, teachers＇ teaching creativity into full play.
文摘Taxation plays a major role in both market economics and Islamic economics. The difference is that in market economics, the tax system has evolved throughout the centuries in order to address the constant change in market-based societies. In Islamic economics, however, the tax system bases on the writings of the Qur＇an and the principles of shariah. As a result, it did not flourish as the needs of Islamic society changed. Therefore, governments in Islamic countries that seek to follow Islamic law are facing major economic challenges. Recently, some Islamic scholars have asserted that Islamic governments can go beyond the explicit instructions of the Qur＇an and impose taxes as needed. They justify their arguments based on the interpretation of Qur＇anic verses. This paper briefly compares both rationality and the methods of taxation in both market economics and Islamic economics, and further elaborates on the shortcomings of the original Islamic tax laws.
文摘Enterprise Management Innovation has been a topic of concern to the business community and holds the same opinions to adhere to corporate management for innovation, but how to make companies management innovation becomes the business people must face. I believe that： enterprise management innovation is the innovation of the modem enterprise system, enterprise management innovation is necessary not only to establish modem corporate governance institutions, but also to establish a sound management system. Based on this idea, the purpose of this paper is to explore the enterprise management innovation, a true reflection of the necessity and creative approach to business management innovation. Through analysis, the enterprise management innovation is the scientific concept of development of specific applications in the field of enterprise management. Enterprise management innovation is the development of internal demand point of view, hoping to be helpful for Chinese enterprises to occupy a place in the fierce competition in the international market.
文摘A new trajectory generation for heat load test is proposed based on gauss pseudospectral method within limit range. Firstly,with multiple path constraints and flight task requirements taken into consideration, heat load parameters are introduced into the dynamics equations. In order to solve the problem of generating such a trajectory within limit range rapidly, the dynamics equations have been normalized by Earth related parameters. Secondly, since the gauss pseudospectral method is just employed to solve the discrete nonlinear programming problem, transformations are developed, which can relate the Lagrange multipliers of the discrete nonlinear programming problem to the costates of the continuous optimal control problem. In addtion, another approach of trajectory generation by tracking the given heat rate is also presented. Finally, simulation results with common aero vehicle(CAV-H) show that the trajectories obtained by both methods can well perform the heat load test with high stagnation heating rate and the large total aeroheating amount; meanwhile, gauss pseudospectral method is better than the compared one in the given range. Furthermore, the 3-D trajectory states and control variables, angle of attack and bank, which are generated by gauss pseudospectral method, can change smoothly.
文摘Editor＇s comments Formaldehyde （HCHO） emitted from chemical manufacturing plants including methanol-gasoline/diesel fuel vehicles and the construction and decoration materials is one of the major air pollutions, which induces photochemical pollution and hazards human health. Great efforts have been made for the reduction or control of the emission of HCHO to satisfy the stringent environmental regulations. Now, a new study supported by the National Natural Science Foundation of China reports mesoporous manganese oxide with novel nanostructures for the decomposition of HCHO. The obtained manganese oxide nanomaterials showed high catalytic activities for oxidative decomposition of HCHO at low temperatures. Complete conversion of HCHO to CO2 and H2O were achieved, and no harmful by- products were detected in effluent gases. The catalytic activities of these nanomaterials are significantly higher than those of previously reported manganese oxide octahedral molecular sieve （OMS-2） nanorods , MnO x powders, and alumnina-supported mangnaese-palladium oxide catalysts. These results provide a new route for the removal of HCHO and other air pollutions.
