In this paper, the balanced economic growth path was considered in a new growth model with endogenous technical progress. It is not only obtained the optimal allocation about capital and labor between a goods-producin...In this paper, the balanced economic growth path was considered in a new growth model with endogenous technical progress. It is not only obtained the optimal allocation about capital and labor between a goods-producing sector and a R&D Sector, but also the optimal value of saving rates. By discussing the effect of parameters, it are also got the following results: When the rate of time preference (discount factor) rising, the fractions of Capital and labor in the goods-producing sector will increase, the fractions in R&D sector and the saving rates will decrease; When the population grows rapidly, the result will be contrary.展开更多
This paper examines the nature of production function and derives its mathematical description similar to Cobb-Douglas form. Defining pareto optimality production state and reducing multiple outputs to a single output...This paper examines the nature of production function and derives its mathematical description similar to Cobb-Douglas form. Defining pareto optimality production state and reducing multiple outputs to a single output, we present Data Envelopment Analysis (DEA) models, which have, in effect, extended the definition for decision making unit (DMU) from cross-section to timeseries so as to determine production function satisfying maximal output and minimal inputs under the condition of pareto optimality. By means of production function determined in this paper we can further obtain such important information in the context of technical progress as index of the level of disembodied type technology and so on. In addition, a case study shows the contributive consequent of this work.展开更多
Based on panel data from the Rural Fixed Point Survey of the Ministry of Agriculture over the period 2004-2016 and supplementary survey data on information and communications technology(ICT)applications in the country...Based on panel data from the Rural Fixed Point Survey of the Ministry of Agriculture over the period 2004-2016 and supplementary survey data on information and communications technology(ICT)applications in the countryside,this paper employs the difference in differences(DID)method to analyze the effects of ICT applications on rural households’agricultural total factor productivity(TFP)with mobile phone signal,internet and 3G mobile network connections as indicators,and decomposes and evaluates the constituent factors.Our findings reveal a positive effect of ICTs on rural households’TFP,which primarily stemmed from rising agricultural technical efficiency.However,ICTs exerted no significant effect on agricultural technical progress during this paper’s data period due to limited rural human capital.These findings are consistent with robustness test results based on counterfactual and matching methods.展开更多
In this paper we consider optimal economic growth in the presence of exhaustible resource, exogenous population growth, and endogenous technical progress. A production function with endogenous technical progress and a...In this paper we consider optimal economic growth in the presence of exhaustible resource, exogenous population growth, and endogenous technical progress. A production function with endogenous technical progress and a more appropriate objective function are suggested. In this new framework we determine the conditions required to ensure exponentially growing, as opposed to declining, consumption. Optimal per capita consumption will be less likely to be incerasing when: the educational efficiency is low; the planner cares little about future; population grows rapidly; and the elasticity of marginal utility is high.展开更多
文摘In this paper, the balanced economic growth path was considered in a new growth model with endogenous technical progress. It is not only obtained the optimal allocation about capital and labor between a goods-producing sector and a R&D Sector, but also the optimal value of saving rates. By discussing the effect of parameters, it are also got the following results: When the rate of time preference (discount factor) rising, the fractions of Capital and labor in the goods-producing sector will increase, the fractions in R&D sector and the saving rates will decrease; When the population grows rapidly, the result will be contrary.
文摘This paper examines the nature of production function and derives its mathematical description similar to Cobb-Douglas form. Defining pareto optimality production state and reducing multiple outputs to a single output, we present Data Envelopment Analysis (DEA) models, which have, in effect, extended the definition for decision making unit (DMU) from cross-section to timeseries so as to determine production function satisfying maximal output and minimal inputs under the condition of pareto optimality. By means of production function determined in this paper we can further obtain such important information in the context of technical progress as index of the level of disembodied type technology and so on. In addition, a case study shows the contributive consequent of this work.
基金the Beijing Food Safety Policy and Strategy Research Base at the China Agricultural University(CAU)the National Natural Science Foundation of China(NSFC)under the“Study on the Effects of Spouse Migration and Health Awareness on Rural Migrant Workers’Food Consumption,Nutrition and Health”(Grant No.71673316)the Ministry of Agriculture and Rural Affairs under the soft science research program“Study on the Bottlenecks of E-Commerce Development for Agricultural Products and Countermeasures(Grant No.2018027).
文摘Based on panel data from the Rural Fixed Point Survey of the Ministry of Agriculture over the period 2004-2016 and supplementary survey data on information and communications technology(ICT)applications in the countryside,this paper employs the difference in differences(DID)method to analyze the effects of ICT applications on rural households’agricultural total factor productivity(TFP)with mobile phone signal,internet and 3G mobile network connections as indicators,and decomposes and evaluates the constituent factors.Our findings reveal a positive effect of ICTs on rural households’TFP,which primarily stemmed from rising agricultural technical efficiency.However,ICTs exerted no significant effect on agricultural technical progress during this paper’s data period due to limited rural human capital.These findings are consistent with robustness test results based on counterfactual and matching methods.
文摘In this paper we consider optimal economic growth in the presence of exhaustible resource, exogenous population growth, and endogenous technical progress. A production function with endogenous technical progress and a more appropriate objective function are suggested. In this new framework we determine the conditions required to ensure exponentially growing, as opposed to declining, consumption. Optimal per capita consumption will be less likely to be incerasing when: the educational efficiency is low; the planner cares little about future; population grows rapidly; and the elasticity of marginal utility is high.
