Based on the analysis of forest inner mechanism, forest benefit in re ducing flood disaster is defined. Through the characteristic analysis of forest benefit in reducing flood disaster, it is suggested that it is imp...Based on the analysis of forest inner mechanism, forest benefit in re ducing flood disaster is defined. Through the characteristic analysis of forest benefit in reducing flood disaster, it is suggested that it is impossible to ado pt the microanalysis method for studying the forest benefit in reducing flood, t he macro analysis is the only method to be adopted. With the special case of dis aster flooding of Changjiang River happened in 1998, the forest benefit in reduc ing flood disaster was scientifically assessed. The estimated results of forest benefit in reducing flood shows that forest vegetation establishment is the radi cal way to control flood, but it only equals to 5 percent of the total benefits of water conservancy facilities.展开更多
This paper presents a new kind of macromodel of OTA,which can be used to solve the problem in which the two port macromodel couldnt reflect some functions of the OTA.The new model also opens up a new way for the simu...This paper presents a new kind of macromodel of OTA,which can be used to solve the problem in which the two port macromodel couldnt reflect some functions of the OTA.The new model also opens up a new way for the simulation of the OTA circuit.This paper discusses the way of designing this model and simulating it in SPICE.The result proves its reasonable design and its simplicity in structure.In the application of this model,we design a complete symmetric double differential quarter square OTA multiplying unit by using four three port OTA macromodels.It successfully solved the problem of the unsymmetry of two input ports in an OTA multiplying unit.This result fully agrees with the experiment.展开更多
In the paper, we investigate a globally coupled linear system with finite subunits subject to temporal periodic force and with multiplicative dichotomous noise. It is shown that, the global coupling among the subunits...In the paper, we investigate a globally coupled linear system with finite subunits subject to temporal periodic force and with multiplicative dichotomous noise. It is shown that, the global coupling among the subunits can hugely enhance the phenomenon of SR for the amplitude of the average mean field as the functions of the transition rate of the noise and that as the function of the frequency of the signal respectively.展开更多
With the rapid development and competition in bank business, Financial innovation appear constantly, private and foreign Banks are becoming the potential entrants. The original management, control and business mode al...With the rapid development and competition in bank business, Financial innovation appear constantly, private and foreign Banks are becoming the potential entrants. The original management, control and business mode already can not adapt to the new situation,it＇ s necessary to adopt the new development strategy to meet new opportunities and challenges. This article embarked from the analysis of macro environment and based on the pingxiang area characteristic analyzes the current situation of CCB pingxiang branch, puts forward some countermeasures to the implementation of the strategy of CCB pingxiang branch.展开更多
Methods that can efficiently model the effects of rock joints on rock mass behavior can be beneficial in rock engineering. The suitability of equivalent rock mass(ERM) technique based upon particle methods is investig...Methods that can efficiently model the effects of rock joints on rock mass behavior can be beneficial in rock engineering. The suitability of equivalent rock mass(ERM) technique based upon particle methods is investigated. The ERM methodology is first validated by comparing calculated and experimental data of lab triaxial compression test on a set of cylindrical rock mass samples, each containing a single joint oriented in various dip angles. The simulated results are then used to study the stress-strain nonlinearity and failure mechanism as a function of the joint dip angle and confining stress. The anisotropy and size effects are also investigated by using multi-scale cubic ERM models subjected to triaxial compression test. The deformation and failure behavior are found to be influenced by joint degradation, the micro-crack formation in the intact rock, the interaction between two joints, and the interactions of micro-cracks and joints.展开更多
This paper examines the impact of climate change on China＇s grain production and food security. The research is one of the four studies on future conditions of China＇s food production system under the influence of c...This paper examines the impact of climate change on China＇s grain production and food security. The research is one of the four studies on future conditions of China＇s food production system under the influence of climate change using numerical simulation methods, carried out under a national 973 project entitled ＂impacts of climate change on food systems in China and its adaptation＂. The other three studies focus on changes in cultivated land area and food production, while this study incorporates their grain yield results into a general equilibrium model to simulate future conditions of the grain market. Our simulation analysis arrives at the impact of climate change by comparing such economic variables as grain production, consumption, and GDP growth rate between a baseline scenario and two climate change scenarios. Our results are summarized as follows： （1） In 2050, the total grain production will reach 689.683 million tons--584.264 million tons of total grain consumption and 42.808 million tons of exports. Without considering losses and inventory demand, in 2050 China＇s grain supply and demand will remain well balanced, with a slight surplus expected. （2） Climate change is expected to benefit China＇s macro economy and individual sectors. In comparison with the baseline scenario of no climate change, real wage, real GDP, investment, household consumption, exports, and other macroeconomic indicators will rise under the climate change scenarios. As far as the agricultural, manufacturing, and service sectors are concerned, production, consumption, imports, and exports will each be favorably affected by climate change. （3） The favorable impact of climate change on China＇s macroeconomy and individual sectors under the high emissions scenario （A2） is stronger than that under the low emissions scenario （B2）. （4） In the grain market, climate change is expected to increase supply, reduce imports, increase supply, and demand; and supply will increase more than demand does. All in all, if taking into the fertilization effect of CO2 account, climate change is expected to strengthen China＇s grain supply and safeguard food security.展开更多
This paper introduces the origin of Inclusive Financial System, summarizes the basic theories and views on inclusive financial system development and poverty reduction from experts and scholars at home and abroad. The...This paper introduces the origin of Inclusive Financial System, summarizes the basic theories and views on inclusive financial system development and poverty reduction from experts and scholars at home and abroad. The paper establishes a theoretical analysis framework which impacts poor family income gap by using exponential smoothing method. The government should improve the credit market in poverty- stricken area by the way of macro-management to establish inclusive financial system, to overcome the difficulty of poor farmers＇ credit, to make more poor families to obtain credit opportunities.展开更多
The stability of money demand function is an important issue in macroeconomic policy implementation. Money demand of Korean economy was estimated. Cointegration test with time dummy variables results show that there i...The stability of money demand function is an important issue in macroeconomic policy implementation. Money demand of Korean economy was estimated. Cointegration test with time dummy variables results show that there is not only long-run equilibrium relationship between money demand and macroeconomic variables, but also structural breaks in this equilibrium relationships. Least squares, state-space, and Marcov switching methods show that there also has been instability （or regime shifts） of parameters in money demand, especially over 1997 crisis and the early 2000s. This fact implies that monetary policy for stabilization might encounter big problems due to change （instability） of money demand.展开更多
MDSA （macro demand spatial approach） is an approach introduced in long time electricity demand forecasting considering location. It will be used at transmission planning and policy decision on electricity infrastruc...MDSA （macro demand spatial approach） is an approach introduced in long time electricity demand forecasting considering location. It will be used at transmission planning and policy decision on electricity infrastructure development in a region. In the model, MDSA combined with PCA （principal component analysis） and QA （qualitative analysis） to determine main development area in region and the variables that affecting electricity demand in there. Main development area is an area with industrial domination as a driver of economic growth. The electricity demand driver variables are different for type of electricity consumer. However, they will be equal for main development areas. The variables which have no significant effect can be reduced by using PCA. The generated models tested to assess whether it still at the range of confidence level of electricity demand forecasting. At the case study, generated model for main development areas at South Sumatra Subsystem as a part of Sumatra Interconnection System is still in the range of confidence level. Thus, MDSA can be proposed as alternative approach in transmission planning that considering location.展开更多
基金National Foundation of Ninth Five-Yea r Plan (No. 96-007-04-06-03).
文摘Based on the analysis of forest inner mechanism, forest benefit in re ducing flood disaster is defined. Through the characteristic analysis of forest benefit in reducing flood disaster, it is suggested that it is impossible to ado pt the microanalysis method for studying the forest benefit in reducing flood, t he macro analysis is the only method to be adopted. With the special case of dis aster flooding of Changjiang River happened in 1998, the forest benefit in reduc ing flood disaster was scientifically assessed. The estimated results of forest benefit in reducing flood shows that forest vegetation establishment is the radi cal way to control flood, but it only equals to 5 percent of the total benefits of water conservancy facilities.
文摘This paper presents a new kind of macromodel of OTA,which can be used to solve the problem in which the two port macromodel couldnt reflect some functions of the OTA.The new model also opens up a new way for the simulation of the OTA circuit.This paper discusses the way of designing this model and simulating it in SPICE.The result proves its reasonable design and its simplicity in structure.In the application of this model,we design a complete symmetric double differential quarter square OTA multiplying unit by using four three port OTA macromodels.It successfully solved the problem of the unsymmetry of two input ports in an OTA multiplying unit.This result fully agrees with the experiment.
基金supported by the Ningbo's Supplement of National Natural Science Foundation of China under Grant No.10375009SRF for ROCS,SEM,and K.C.Wong Magna Fund in Ningbo University of China
文摘In the paper, we investigate a globally coupled linear system with finite subunits subject to temporal periodic force and with multiplicative dichotomous noise. It is shown that, the global coupling among the subunits can hugely enhance the phenomenon of SR for the amplitude of the average mean field as the functions of the transition rate of the noise and that as the function of the frequency of the signal respectively.
文摘With the rapid development and competition in bank business, Financial innovation appear constantly, private and foreign Banks are becoming the potential entrants. The original management, control and business mode already can not adapt to the new situation,it＇ s necessary to adopt the new development strategy to meet new opportunities and challenges. This article embarked from the analysis of macro environment and based on the pingxiang area characteristic analyzes the current situation of CCB pingxiang branch, puts forward some countermeasures to the implementation of the strategy of CCB pingxiang branch.
基金Projects(51074014,51174014) supported by the National Natural Science Foundation of China
文摘Methods that can efficiently model the effects of rock joints on rock mass behavior can be beneficial in rock engineering. The suitability of equivalent rock mass(ERM) technique based upon particle methods is investigated. The ERM methodology is first validated by comparing calculated and experimental data of lab triaxial compression test on a set of cylindrical rock mass samples, each containing a single joint oriented in various dip angles. The simulated results are then used to study the stress-strain nonlinearity and failure mechanism as a function of the joint dip angle and confining stress. The anisotropy and size effects are also investigated by using multi-scale cubic ERM models subjected to triaxial compression test. The deformation and failure behavior are found to be influenced by joint degradation, the micro-crack formation in the intact rock, the interaction between two joints, and the interactions of micro-cracks and joints.
文摘This paper examines the impact of climate change on China＇s grain production and food security. The research is one of the four studies on future conditions of China＇s food production system under the influence of climate change using numerical simulation methods, carried out under a national 973 project entitled ＂impacts of climate change on food systems in China and its adaptation＂. The other three studies focus on changes in cultivated land area and food production, while this study incorporates their grain yield results into a general equilibrium model to simulate future conditions of the grain market. Our simulation analysis arrives at the impact of climate change by comparing such economic variables as grain production, consumption, and GDP growth rate between a baseline scenario and two climate change scenarios. Our results are summarized as follows： （1） In 2050, the total grain production will reach 689.683 million tons--584.264 million tons of total grain consumption and 42.808 million tons of exports. Without considering losses and inventory demand, in 2050 China＇s grain supply and demand will remain well balanced, with a slight surplus expected. （2） Climate change is expected to benefit China＇s macro economy and individual sectors. In comparison with the baseline scenario of no climate change, real wage, real GDP, investment, household consumption, exports, and other macroeconomic indicators will rise under the climate change scenarios. As far as the agricultural, manufacturing, and service sectors are concerned, production, consumption, imports, and exports will each be favorably affected by climate change. （3） The favorable impact of climate change on China＇s macroeconomy and individual sectors under the high emissions scenario （A2） is stronger than that under the low emissions scenario （B2）. （4） In the grain market, climate change is expected to increase supply, reduce imports, increase supply, and demand; and supply will increase more than demand does. All in all, if taking into the fertilization effect of CO2 account, climate change is expected to strengthen China＇s grain supply and safeguard food security.
文摘This paper introduces the origin of Inclusive Financial System, summarizes the basic theories and views on inclusive financial system development and poverty reduction from experts and scholars at home and abroad. The paper establishes a theoretical analysis framework which impacts poor family income gap by using exponential smoothing method. The government should improve the credit market in poverty- stricken area by the way of macro-management to establish inclusive financial system, to overcome the difficulty of poor farmers＇ credit, to make more poor families to obtain credit opportunities.
文摘The stability of money demand function is an important issue in macroeconomic policy implementation. Money demand of Korean economy was estimated. Cointegration test with time dummy variables results show that there is not only long-run equilibrium relationship between money demand and macroeconomic variables, but also structural breaks in this equilibrium relationships. Least squares, state-space, and Marcov switching methods show that there also has been instability （or regime shifts） of parameters in money demand, especially over 1997 crisis and the early 2000s. This fact implies that monetary policy for stabilization might encounter big problems due to change （instability） of money demand.
文摘MDSA （macro demand spatial approach） is an approach introduced in long time electricity demand forecasting considering location. It will be used at transmission planning and policy decision on electricity infrastructure development in a region. In the model, MDSA combined with PCA （principal component analysis） and QA （qualitative analysis） to determine main development area in region and the variables that affecting electricity demand in there. Main development area is an area with industrial domination as a driver of economic growth. The electricity demand driver variables are different for type of electricity consumer. However, they will be equal for main development areas. The variables which have no significant effect can be reduced by using PCA. The generated models tested to assess whether it still at the range of confidence level of electricity demand forecasting. At the case study, generated model for main development areas at South Sumatra Subsystem as a part of Sumatra Interconnection System is still in the range of confidence level. Thus, MDSA can be proposed as alternative approach in transmission planning that considering location.
