The generally used methods of forecasting coal requirement quantity include the analogy method, the outside push method and the cause effect analysis method. However, the precision of forecasting results using these m...The generally used methods of forecasting coal requirement quantity include the analogy method, the outside push method and the cause effect analysis method. However, the precision of forecasting results using these methods is lower. This paper uses the grey system theory, and sets up grey forecasting model GM (1, 3) to coal requirement quantity. The forecasting result for the Chinese coal requirement quantity coincides with the actual values, and this shows that the model is reliable. Finally, this model are used to forecast Chinese coal requirement quantity in the future ten years.展开更多
The Quantity Theory of Money and the Theory of Credit Creation have been the major streams in the study of the quantity of money.Nowadays,monetary theory is dominated by the Quantity Theory of Money because the Moneta...The Quantity Theory of Money and the Theory of Credit Creation have been the major streams in the study of the quantity of money.Nowadays,monetary theory is dominated by the Quantity Theory of Money because the Monetarist School and the Rational Expectation School are both the advocates of the Quantity Theory of Money,which has resulted in a sharp decrease of scholars studying the Theory of Credit Creation.Nevertheless,the two theories will ultimately converge.Given that reason,we propose a new theory-Dynamic Quantity Theory of Money in this paper,by which the unification of the Quantity Theory of Money and the Theory of Credit Creation can be achieved.Based on the Dynamic Quantity Theory of Money,we further put forward the Theory of Money Operation Cycle,the Theory of Monetary Compensation and Theory of Investment Compensation targeting economic crises,expound why Quantitative Easing monetary policy fails and why Quantitative Easing does not cause inflation in the short term under the premise of these theories,and demonstrate the necessity of fiscal investment for rescuing economic crisis from the perspective of theories of money.展开更多
The change in the quantity of cultivated land influences the structure, function and evolvement of ecosystem. The rational change in the quantity of cultivated land will be propitious to ecological security and sustai...The change in the quantity of cultivated land influences the structure, function and evolvement of ecosystem. The rational change in the quantity of cultivated land will be propitious to ecological security and sustainable development, and irrational change will deteriorate ecological environment. The concept of cultivated land quantity niche regulation was firstly put forward based on niche theory and the action-feedback mechanism between cultivated land quantity niche and cultivated land benefit niche. Then, the regulation measures of cultivated land quantity niche were brought forward in rural-urban area, agro-forest area and consolidation-reclamation-exploitation area. Finally, the ecological environmental effect after regulation was analyzed. The results show that different measures should be taken to regulate cultivated land quantity niche in different areas. The economic and social benefit niche of cultivated land should be promoted to regulate cultivated land quantity niche in rural-urban area and consolidation-reclamation-exploitation area. The social benefit niche of cultivated land should be reduced in agro-forest area. The regulation goal of cultivated land quantity niche will be attained by different measures.展开更多
The order quantity is often affected by various factors, so it is morevaluable to research the problem of evaluating the order quantity based on a less premise. In thispaper, a complicated order quantity problem is st...The order quantity is often affected by various factors, so it is morevaluable to research the problem of evaluating the order quantity based on a less premise. In thispaper, a complicated order quantity problem is studied and an order quantity simulation system isestablished with the simulation software of ARENA. Finally, an example is given.展开更多
文摘The generally used methods of forecasting coal requirement quantity include the analogy method, the outside push method and the cause effect analysis method. However, the precision of forecasting results using these methods is lower. This paper uses the grey system theory, and sets up grey forecasting model GM (1, 3) to coal requirement quantity. The forecasting result for the Chinese coal requirement quantity coincides with the actual values, and this shows that the model is reliable. Finally, this model are used to forecast Chinese coal requirement quantity in the future ten years.
文摘The Quantity Theory of Money and the Theory of Credit Creation have been the major streams in the study of the quantity of money.Nowadays,monetary theory is dominated by the Quantity Theory of Money because the Monetarist School and the Rational Expectation School are both the advocates of the Quantity Theory of Money,which has resulted in a sharp decrease of scholars studying the Theory of Credit Creation.Nevertheless,the two theories will ultimately converge.Given that reason,we propose a new theory-Dynamic Quantity Theory of Money in this paper,by which the unification of the Quantity Theory of Money and the Theory of Credit Creation can be achieved.Based on the Dynamic Quantity Theory of Money,we further put forward the Theory of Money Operation Cycle,the Theory of Monetary Compensation and Theory of Investment Compensation targeting economic crises,expound why Quantitative Easing monetary policy fails and why Quantitative Easing does not cause inflation in the short term under the premise of these theories,and demonstrate the necessity of fiscal investment for rescuing economic crisis from the perspective of theories of money.
基金Project(2006BAJ05A14-2)supported by the National Science and Technology Supporting Program of ChinaProject(11YJC790139)supported by the Humanities and Social Sciences Program of Ministry of Education of ChinaProject(2011GGJS-053)supported by the Foundation for University Young Key Teacher by Henan Province of China
文摘The change in the quantity of cultivated land influences the structure, function and evolvement of ecosystem. The rational change in the quantity of cultivated land will be propitious to ecological security and sustainable development, and irrational change will deteriorate ecological environment. The concept of cultivated land quantity niche regulation was firstly put forward based on niche theory and the action-feedback mechanism between cultivated land quantity niche and cultivated land benefit niche. Then, the regulation measures of cultivated land quantity niche were brought forward in rural-urban area, agro-forest area and consolidation-reclamation-exploitation area. Finally, the ecological environmental effect after regulation was analyzed. The results show that different measures should be taken to regulate cultivated land quantity niche in different areas. The economic and social benefit niche of cultivated land should be promoted to regulate cultivated land quantity niche in rural-urban area and consolidation-reclamation-exploitation area. The social benefit niche of cultivated land should be reduced in agro-forest area. The regulation goal of cultivated land quantity niche will be attained by different measures.
文摘The order quantity is often affected by various factors, so it is morevaluable to research the problem of evaluating the order quantity based on a less premise. In thispaper, a complicated order quantity problem is studied and an order quantity simulation system isestablished with the simulation software of ARENA. Finally, an example is given.
