Based on the overall consideration of individual behaviors of Ricardian and non-Ricardian households, this paper develops a New Keynesian dynamic stochastic general equilibrium(DSGE) model to form a relatively systema...Based on the overall consideration of individual behaviors of Ricardian and non-Ricardian households, this paper develops a New Keynesian dynamic stochastic general equilibrium(DSGE) model to form a relatively systematic research framework for analyzing the economic effects of structural fiscal instruments. Our study findsthat great differences exist in the macroeconomic effects of different fiscal instruments, suggesting that the government should prudently select these fiscal instruments in fiscal macro-control. The simulating results of fiscal shocks show that the effect of tax cut is superior to the effect of increased spending. In the context of slowing economic growth and less potent stimulation policy, the government should transform its previous regulatory approach of fiscal policy and shift from hefty spending stimulus policy to structural tax cuts. This paper believes that China should step up the implementation of public-private partnership, increase its spending on social security, healthcare, pension and public services and facilitate the transition toward a service-based government; and that tax policy should focus on structural tax cuts on consumption to promote the transition of demand structure toward consumption-driven.展开更多
How to fmd main influence factors of individuals to mobile service demand is investiga- ted. The empirical research is conducted in the sample of high-value customers in China mobile market. Based on Lewin behavior mo...How to fmd main influence factors of individuals to mobile service demand is investiga- ted. The empirical research is conducted in the sample of high-value customers in China mobile market. Based on Lewin behavior model, this pa- per establishes factors-matrix from personal and environmental dimensions. Relationships among multiple factors are tested in the structural equa- tion model and their impacts on customers' de- mands are elaborated. Findings indicate that opera- tional convenience and business brand image have significant effects on sample users' demands. Fur- thermore, annual income, gender, occupation, the needs of access to information and the needs of enriching and improving social relationships are al- so important factors for high-value users. The re- suits may provide further insights into mobile service demand and the model can be popularized to other behavior researches.展开更多
The sustainable and rapid development of Chinese economy entails fast growth of energy demand. In recent years, power is in short supply: supply and transportation of coal is tense causing a price rise; crude oil imp...The sustainable and rapid development of Chinese economy entails fast growth of energy demand. In recent years, power is in short supply: supply and transportation of coal is tense causing a price rise; crude oil import increases and oil price lingers on high end. These phenomena reflccting energy shortage have become people'hot-debated issues in economic life, and public economic regulators and economists have shown unprecedented concerns about the energy-, environment-, and resources-related issues from the sustainable development point of view.展开更多
Thermophotovoltaic (TPV) system has been regarded as one promising means to alleviate current energy demand because it can directly generate electricity from radiation heat via photons. However, the presently availa...Thermophotovoltaic (TPV) system has been regarded as one promising means to alleviate current energy demand because it can directly generate electricity from radiation heat via photons. However, the presently available TPV systems suffer from low conversion efficiency and low throughput. A viable solution to increase their efficiency is to apply micro/nanoscale radiation principles in the design of different components to utilize the characteristics ~f thermal radiation at small distances and in microstructures. Several critical issues are reviewed, such as photovoltaic effect, quantum efficiency and efficiency of TPV system. Emphasis is given to the development of wavelength-selective emitters and filters and the aspects of micro/nanoscale heat transfer. Recent progress, along with the challenges and opportunities for future development of TPV systems are also outlined.展开更多
This paper studies the relationship between the widening urban-rural income inequality and weak household consumption demand in China. The theoretic model shows that households with higher income have lower average an...This paper studies the relationship between the widening urban-rural income inequality and weak household consumption demand in China. The theoretic model shows that households with higher income have lower average and marginal propensity to consume (APC and MPC), and that the larger the income gap is, the weaker household consumption demand becomes. This paper tests the theoretical model with the panel data of 28 Chinese provinces, municipalities and autonomous regions from 1978 to 2009. The results show that with an increase of RMBIO, O00 in income, household APC drops by 25.6 percent and MPC by 7.0 percent," and that if the income gap widens by one unit, household consumption rate drops by 6. 5 percentage points. Simulation results reveal that the widening urban-rural income inequality caused an extra drop of 3.42 percentage points in household consumption rate from 2000 to 2008, which accounts for 30.8 percent of the total drop in household consumption rate during that period.展开更多
Organizations, no matter their kinds, are established to serve specific societal needs. The success of an organization depends on its ability to direct the energies of its members in effectively serving these needs. T...Organizations, no matter their kinds, are established to serve specific societal needs. The success of an organization depends on its ability to direct the energies of its members in effectively serving these needs. The primary motive for the existence of any organization is often expressed in its mission. It is heartwarming that most Nigerian organizations (profit and non-profit alike) have mission statements conspicuously displayed in their front offices However, the efficacies of these mission statements in securing the needed employees support and commitment have not being fully investigated within the Nigerian context. The authors used structured questionnaires to elicit required responses from respondents' employees of various Nigerian organizations. It was affirmed that the statements of properly formulated and communicated missions are potent tools in the hands of management in unleashing employees' commitment and improving organizational performance. It was recommended that Nigeria organizations should move beyond the use of mission statements as mere "slogans" and open up employees' "eyes to see how their daily tasks and roles as enshrined in the vision and mission can move the organization towards the attainment of its objectives展开更多
The objective of the present paper is to describe a technical and economical visibility study of the application of ground source heat pumps (GSHP) in a supermarket in Portugal. The study was developed under the Eur...The objective of the present paper is to describe a technical and economical visibility study of the application of ground source heat pumps (GSHP) in a supermarket in Portugal. The study was developed under the European project "Integration of Geothermal Energy Into Industrial Application - IGEIA", project number EIE 06/001, supported by the Intelligent Energy for Europe, IEE, of EACI, European Commission. In general for supermarkets installed in single buildings, the building envelope has higher rates of envelope areas per indoor air volume. In Portugal this fact produces high need of heating during the winter season and high cooling needs during the summer season. Inside the building there are strong internal heat loads produced by high densities of lights and equipments. However these internal loads are not distributed uniformly. There are some areas with high production of heat but there are others with production of cooling. Therefore the acclimatization of this kind of buildings is not so easy and the balance of heating and cooling needs is depending of different parameters which should be well evaluated. The energy consummation of the cold display cases and deep freezers in market area and storage is also very high. The different energy needs could be studied in an integrated way and could be partially satisfied by geothermal energy using ground source heat pumps. At the same time the boreholes could be used as an energy reservoir increasing the efficiency of whole system. Four different climatic zones in Portugal were selected, (north coast, interior north, south coast and interior south) using the same system. The results of the study show that the all energy needs can by partially satisfied by geothermal energy but they need to be integrated to increase the global efficiency. The paper shows that the geothermal energy can be an attractive application for the supermarkets in Portugal if the energy solution is studied in an integrated way and if it is also considered as a cost the emissions of CO2 avoid by the new system.展开更多
The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of terrene and railway. If the subsidence foreca...The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of terrene and railway. If the subsidence forecasting is incorrect and maintenance measure is not suitable in the preceding and the process of mining, the normal operation of the railway in mine area will not be ensured and perhaps the safety accident will be resulted. The railway subsidence forecasting and maintenance system for fully mechanized caving coal face are studied and developed in this connection. Based on the accurate subsidence forecasting of the terrene and railway, the maintenance measure for track and switch turnout in railway is put forward in this system.展开更多
Recent estimates state that the European Union is on course to achieve only half of the 20% energy consumption reduction target by 2020. As the first governmental stakeholders involved in the implementation of energy ...Recent estimates state that the European Union is on course to achieve only half of the 20% energy consumption reduction target by 2020. As the first governmental stakeholders involved in the implementation of energy saving initiatives, municipalities play a strategic role in the energy planning process. This paper focuses on establishment of an energy planning methodology for small municipalities with numbers of inhabitants in range of 1,000-10,000 which often face common problems associated with low efficient district heat supply systems and decreasing energy consumption in buildings. Particular attention is paid to DSM (demand side management) activities. DSM scheme includes legislative and financial flows with small investments from municipality side. Based on increased information and motivation it promotes reduction of energy consumption in all kinds of buildings. Practical experience has shown that application of DSM measures allows achieving 20% energy savings in municipal buildings during the first year.展开更多
Demographic transitions occur at different times and speed across different economies, and age structures consequently differ across regions. Using a solvable four-phase model, we show that economies with a higher pro...Demographic transitions occur at different times and speed across different economies, and age structures consequently differ across regions. Using a solvable four-phase model, we show that economies with a higher proportion of working-age force and a lower dependency ratio tend to have higher savings rates. Because the demographic " center of gravity"for investment demand falls at a younger point in the age distribution than that of savings supply, countries with a younger age-distribution like those described above generate national savings in excess of domestic investment, resulting in a current account surplus. Numerical simulation supports this hypothesis. But the relative youth or age of a country's population reflects temporary demographic trends which change continuously. Therefore, while trade imbalances caused by demographic factors are structural and long-term, they are not permanent, and may be reversed by changes in age structure.展开更多
There has been considerable debate about the major factors responsible for the dramatic decline of China's energy intensity in the 1980s and 1990s. However, few detailed analysis has been done to explain the fluctuat...There has been considerable debate about the major factors responsible for the dramatic decline of China's energy intensity in the 1980s and 1990s. However, few detailed analysis has been done to explain the fluctuation in energy intensity during 2002-005. In this paper, we use the structural decomposition analysis (SDA) to decompose energy intensity into five determining factors: Energy input coefficient, technology coefficient (Leontief inverse coefficient), final demands structure by product, final demands by category and final energy consumption coefficient. We then further decompose two coefficients, energy input coefficient and technology coefficient, into structure and real coefficient. Empirical study is carried out based on the energy-input-output tables from 1987 to 2005 in 2000 constant price. The results show that between 1987 and 2002, energy input structure accounts for most of the decline in energy intensity. However, the input structure and final demands structure by product explain the increase of the energy intensity between 2002 and 2005.展开更多
The periodic character of economic development and energy demand, the basic national policy of saving energy and reducing emissions, and the constraints of curbing global warming and reducing greenhouse gas emissions ...The periodic character of economic development and energy demand, the basic national policy of saving energy and reducing emissions, and the constraints of curbing global warming and reducing greenhouse gas emissions all necessitate corresponding adjustments to China's energy strategy, and especially its energy structure strategy. The previous energy strategy focused primarily on energy reserves and production, i.e., focused on energy supply in order to meet energy demand. In response to global climate change, the readjustment of China's energy strategy has become imperative: on the one hand, the government needs to engage in serious management of both energy supply and energy demand to meet China's energy demand; on the other, it needs to reduce CO: emissions and make this a constraint on meeting energy demand. In our study, through establishing an optimal model, we get the optimal energy structure allowing for energy conservation and emission constraints; then we proceed, by means of a computable general equilibrium (CGE) model, to estimate the impact of rising energy costs as a result of changes in energy structure on the macro-economy. Our research results show that the government's plan for renewable energy has a positive impact on reducing CO2 emissions. However, rising energy costs as a result of changes in the energy structure under carbon emission constraints negatively affects macro-economic performance. As many important Chinese industries depend heavily on coal and thermoelectricity, the room for CO2 emission reductions is limited at the present stage. Instead, the government should pay attention to realizing CO2 emission reductions in other fields of economic life.展开更多
Driven by a demand for better fuel economy and increasingly stringent emissions regulations over a wide range of customers and applications,engine manufacturers have turned towards engine downsizing as the most potent...Driven by a demand for better fuel economy and increasingly stringent emissions regulations over a wide range of customers and applications,engine manufacturers have turned towards engine downsizing as the most potent enabler to meet these requirements.With boosting systems becoming ever more numerous as the technical solutions to complex boosting requirements of the internal combustion engine increase,it is time for an overview of available and under development boosting technologies and systems and for a discussion of their relevance to downsizing efforts.The presented analysis shows that there are no standard solutions for all the different applications as the trends indicate a rising complexity to meet with the extreme boosting requirements predicted for the remainder of the decade.These trends include variable geometry,a shift from single to two(or more)stages,extensive actuation for bypassing exhaust flows,exhaust flow regulation and pulsating exhaust energy recovery, severe electrification and an extensive effort downstream from the turbine to capture waste heat after the principal turbo- charger/supercharger system.展开更多
This paper analyzes whether the slowdown of China's trade in 2012-2015 was cyclical or structural, and further discusses the effects of structural factors, including trade structure, trade protectionism and global va...This paper analyzes whether the slowdown of China's trade in 2012-2015 was cyclical or structural, and further discusses the effects of structural factors, including trade structure, trade protectionism and global value chain participation, Using the national panel data from 2000 to 2015, based on the error correction model and import-intensity- adjusted demand model, our results show that the slowdown of China's trade growth in 2012-2015 was mainly a result of cyclical factors. Using 2000-2015 industry- level data, we also find that the structure of trade goods had an inhibitory effect on the import slowdown but a positive effect on the export slowdown. Trade protectionism had an adverse effect on the trade growth slowdown. The global value chain participation marginally contributed to the slowdown in trade growth. Therefore, the impacts of structural factors on trade growth slowdown cannot be ignored, and related policies should receive greater attention from policy-makers.展开更多
It was planned to build 36 million units of social welfare housing during the twelve-five2011-2015 in China.This paper introduces the estimation of owner occupied dwelling sector and develops a dynamic computable gene...It was planned to build 36 million units of social welfare housing during the twelve-five2011-2015 in China.This paper introduces the estimation of owner occupied dwelling sector and develops a dynamic computable general equilibrium model for China's real estate and macro-economy,to simulate the policy effects.The simulation results show that this policy can meet the increased requirements of housing demand due to fast urbanization and improvement of living conditions,therefore it will effectively cool down the price boom of housing market.Meanwhile,although the investment on social welfare housing will reduce the investment on other sectors,it will still stimulate GDP growth.展开更多
文摘Based on the overall consideration of individual behaviors of Ricardian and non-Ricardian households, this paper develops a New Keynesian dynamic stochastic general equilibrium(DSGE) model to form a relatively systematic research framework for analyzing the economic effects of structural fiscal instruments. Our study findsthat great differences exist in the macroeconomic effects of different fiscal instruments, suggesting that the government should prudently select these fiscal instruments in fiscal macro-control. The simulating results of fiscal shocks show that the effect of tax cut is superior to the effect of increased spending. In the context of slowing economic growth and less potent stimulation policy, the government should transform its previous regulatory approach of fiscal policy and shift from hefty spending stimulus policy to structural tax cuts. This paper believes that China should step up the implementation of public-private partnership, increase its spending on social security, healthcare, pension and public services and facilitate the transition toward a service-based government; and that tax policy should focus on structural tax cuts on consumption to promote the transition of demand structure toward consumption-driven.
基金supported by the Hunan Province Soft SciencesPlan under Grant No. 2009ZK2001
文摘How to fmd main influence factors of individuals to mobile service demand is investiga- ted. The empirical research is conducted in the sample of high-value customers in China mobile market. Based on Lewin behavior model, this pa- per establishes factors-matrix from personal and environmental dimensions. Relationships among multiple factors are tested in the structural equa- tion model and their impacts on customers' de- mands are elaborated. Findings indicate that opera- tional convenience and business brand image have significant effects on sample users' demands. Fur- thermore, annual income, gender, occupation, the needs of access to information and the needs of enriching and improving social relationships are al- so important factors for high-value users. The re- suits may provide further insights into mobile service demand and the model can be popularized to other behavior researches.
文摘The sustainable and rapid development of Chinese economy entails fast growth of energy demand. In recent years, power is in short supply: supply and transportation of coal is tense causing a price rise; crude oil import increases and oil price lingers on high end. These phenomena reflccting energy shortage have become people'hot-debated issues in economic life, and public economic regulators and economists have shown unprecedented concerns about the energy-, environment-, and resources-related issues from the sustainable development point of view.
基金Project(2009AA05Z215) supported by the National High Technology Research and Development Program of China
文摘Thermophotovoltaic (TPV) system has been regarded as one promising means to alleviate current energy demand because it can directly generate electricity from radiation heat via photons. However, the presently available TPV systems suffer from low conversion efficiency and low throughput. A viable solution to increase their efficiency is to apply micro/nanoscale radiation principles in the design of different components to utilize the characteristics ~f thermal radiation at small distances and in microstructures. Several critical issues are reviewed, such as photovoltaic effect, quantum efficiency and efficiency of TPV system. Emphasis is given to the development of wavelength-selective emitters and filters and the aspects of micro/nanoscale heat transfer. Recent progress, along with the challenges and opportunities for future development of TPV systems are also outlined.
基金The author appreciate the financial support from the Program of National Natural Science Foundation of China (No. 71003112, 71273289).
文摘This paper studies the relationship between the widening urban-rural income inequality and weak household consumption demand in China. The theoretic model shows that households with higher income have lower average and marginal propensity to consume (APC and MPC), and that the larger the income gap is, the weaker household consumption demand becomes. This paper tests the theoretical model with the panel data of 28 Chinese provinces, municipalities and autonomous regions from 1978 to 2009. The results show that with an increase of RMBIO, O00 in income, household APC drops by 25.6 percent and MPC by 7.0 percent," and that if the income gap widens by one unit, household consumption rate drops by 6. 5 percentage points. Simulation results reveal that the widening urban-rural income inequality caused an extra drop of 3.42 percentage points in household consumption rate from 2000 to 2008, which accounts for 30.8 percent of the total drop in household consumption rate during that period.
文摘Organizations, no matter their kinds, are established to serve specific societal needs. The success of an organization depends on its ability to direct the energies of its members in effectively serving these needs. The primary motive for the existence of any organization is often expressed in its mission. It is heartwarming that most Nigerian organizations (profit and non-profit alike) have mission statements conspicuously displayed in their front offices However, the efficacies of these mission statements in securing the needed employees support and commitment have not being fully investigated within the Nigerian context. The authors used structured questionnaires to elicit required responses from respondents' employees of various Nigerian organizations. It was affirmed that the statements of properly formulated and communicated missions are potent tools in the hands of management in unleashing employees' commitment and improving organizational performance. It was recommended that Nigeria organizations should move beyond the use of mission statements as mere "slogans" and open up employees' "eyes to see how their daily tasks and roles as enshrined in the vision and mission can move the organization towards the attainment of its objectives
文摘The objective of the present paper is to describe a technical and economical visibility study of the application of ground source heat pumps (GSHP) in a supermarket in Portugal. The study was developed under the European project "Integration of Geothermal Energy Into Industrial Application - IGEIA", project number EIE 06/001, supported by the Intelligent Energy for Europe, IEE, of EACI, European Commission. In general for supermarkets installed in single buildings, the building envelope has higher rates of envelope areas per indoor air volume. In Portugal this fact produces high need of heating during the winter season and high cooling needs during the summer season. Inside the building there are strong internal heat loads produced by high densities of lights and equipments. However these internal loads are not distributed uniformly. There are some areas with high production of heat but there are others with production of cooling. Therefore the acclimatization of this kind of buildings is not so easy and the balance of heating and cooling needs is depending of different parameters which should be well evaluated. The energy consummation of the cold display cases and deep freezers in market area and storage is also very high. The different energy needs could be studied in an integrated way and could be partially satisfied by geothermal energy using ground source heat pumps. At the same time the boreholes could be used as an energy reservoir increasing the efficiency of whole system. Four different climatic zones in Portugal were selected, (north coast, interior north, south coast and interior south) using the same system. The results of the study show that the all energy needs can by partially satisfied by geothermal energy but they need to be integrated to increase the global efficiency. The paper shows that the geothermal energy can be an attractive application for the supermarkets in Portugal if the energy solution is studied in an integrated way and if it is also considered as a cost the emissions of CO2 avoid by the new system.
文摘The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of terrene and railway. If the subsidence forecasting is incorrect and maintenance measure is not suitable in the preceding and the process of mining, the normal operation of the railway in mine area will not be ensured and perhaps the safety accident will be resulted. The railway subsidence forecasting and maintenance system for fully mechanized caving coal face are studied and developed in this connection. Based on the accurate subsidence forecasting of the terrene and railway, the maintenance measure for track and switch turnout in railway is put forward in this system.
文摘Recent estimates state that the European Union is on course to achieve only half of the 20% energy consumption reduction target by 2020. As the first governmental stakeholders involved in the implementation of energy saving initiatives, municipalities play a strategic role in the energy planning process. This paper focuses on establishment of an energy planning methodology for small municipalities with numbers of inhabitants in range of 1,000-10,000 which often face common problems associated with low efficient district heat supply systems and decreasing energy consumption in buildings. Particular attention is paid to DSM (demand side management) activities. DSM scheme includes legislative and financial flows with small investments from municipality side. Based on increased information and motivation it promotes reduction of energy consumption in all kinds of buildings. Practical experience has shown that application of DSM measures allows achieving 20% energy savings in municipal buildings during the first year.
基金This research is supported by: National Social Science Foundation " Study on China's imbalanced foreign trade from the perspective of intra-product specialization" (10BJY079).
文摘Demographic transitions occur at different times and speed across different economies, and age structures consequently differ across regions. Using a solvable four-phase model, we show that economies with a higher proportion of working-age force and a lower dependency ratio tend to have higher savings rates. Because the demographic " center of gravity"for investment demand falls at a younger point in the age distribution than that of savings supply, countries with a younger age-distribution like those described above generate national savings in excess of domestic investment, resulting in a current account surplus. Numerical simulation supports this hypothesis. But the relative youth or age of a country's population reflects temporary demographic trends which change continuously. Therefore, while trade imbalances caused by demographic factors are structural and long-term, they are not permanent, and may be reversed by changes in age structure.
基金supported by the National Natural Science Foundation of China under Grant Nos.70871108, 70810107020
文摘There has been considerable debate about the major factors responsible for the dramatic decline of China's energy intensity in the 1980s and 1990s. However, few detailed analysis has been done to explain the fluctuation in energy intensity during 2002-005. In this paper, we use the structural decomposition analysis (SDA) to decompose energy intensity into five determining factors: Energy input coefficient, technology coefficient (Leontief inverse coefficient), final demands structure by product, final demands by category and final energy consumption coefficient. We then further decompose two coefficients, energy input coefficient and technology coefficient, into structure and real coefficient. Empirical study is carried out based on the energy-input-output tables from 1987 to 2005 in 2000 constant price. The results show that between 1987 and 2002, energy input structure accounts for most of the decline in energy intensity. However, the input structure and final demands structure by product explain the increase of the energy intensity between 2002 and 2005.
文摘The periodic character of economic development and energy demand, the basic national policy of saving energy and reducing emissions, and the constraints of curbing global warming and reducing greenhouse gas emissions all necessitate corresponding adjustments to China's energy strategy, and especially its energy structure strategy. The previous energy strategy focused primarily on energy reserves and production, i.e., focused on energy supply in order to meet energy demand. In response to global climate change, the readjustment of China's energy strategy has become imperative: on the one hand, the government needs to engage in serious management of both energy supply and energy demand to meet China's energy demand; on the other, it needs to reduce CO: emissions and make this a constraint on meeting energy demand. In our study, through establishing an optimal model, we get the optimal energy structure allowing for energy conservation and emission constraints; then we proceed, by means of a computable general equilibrium (CGE) model, to estimate the impact of rising energy costs as a result of changes in energy structure on the macro-economy. Our research results show that the government's plan for renewable energy has a positive impact on reducing CO2 emissions. However, rising energy costs as a result of changes in the energy structure under carbon emission constraints negatively affects macro-economic performance. As many important Chinese industries depend heavily on coal and thermoelectricity, the room for CO2 emission reductions is limited at the present stage. Instead, the government should pay attention to realizing CO2 emission reductions in other fields of economic life.
文摘Driven by a demand for better fuel economy and increasingly stringent emissions regulations over a wide range of customers and applications,engine manufacturers have turned towards engine downsizing as the most potent enabler to meet these requirements.With boosting systems becoming ever more numerous as the technical solutions to complex boosting requirements of the internal combustion engine increase,it is time for an overview of available and under development boosting technologies and systems and for a discussion of their relevance to downsizing efforts.The presented analysis shows that there are no standard solutions for all the different applications as the trends indicate a rising complexity to meet with the extreme boosting requirements predicted for the remainder of the decade.These trends include variable geometry,a shift from single to two(or more)stages,extensive actuation for bypassing exhaust flows,exhaust flow regulation and pulsating exhaust energy recovery, severe electrification and an extensive effort downstream from the turbine to capture waste heat after the principal turbo- charger/supercharger system.
文摘This paper analyzes whether the slowdown of China's trade in 2012-2015 was cyclical or structural, and further discusses the effects of structural factors, including trade structure, trade protectionism and global value chain participation, Using the national panel data from 2000 to 2015, based on the error correction model and import-intensity- adjusted demand model, our results show that the slowdown of China's trade growth in 2012-2015 was mainly a result of cyclical factors. Using 2000-2015 industry- level data, we also find that the structure of trade goods had an inhibitory effect on the import slowdown but a positive effect on the export slowdown. Trade protectionism had an adverse effect on the trade growth slowdown. The global value chain participation marginally contributed to the slowdown in trade growth. Therefore, the impacts of structural factors on trade growth slowdown cannot be ignored, and related policies should receive greater attention from policy-makers.
基金supported by the Natural Science Foundation of China under Grant No.71103176
文摘It was planned to build 36 million units of social welfare housing during the twelve-five2011-2015 in China.This paper introduces the estimation of owner occupied dwelling sector and develops a dynamic computable general equilibrium model for China's real estate and macro-economy,to simulate the policy effects.The simulation results show that this policy can meet the increased requirements of housing demand due to fast urbanization and improvement of living conditions,therefore it will effectively cool down the price boom of housing market.Meanwhile,although the investment on social welfare housing will reduce the investment on other sectors,it will still stimulate GDP growth.