| Based on the analysis major economic characteristics of IT's network effect,this paper attempts to break through the traditional methods about the research of IT and economic growth relationship,and explores the mechanism of IT endogenously promoting the economic growth in the framework of specification and divison of labor.At the same time,by using the frontier econometrics method,the empirical tests between IT and its network effects with economic growth in the perspective of region and industry level have been studied and some targeted policy recommendations have been proposed.This paper includes both theoretical and empirical research,among them,the theoretical research divided into the following two points:(1)The theorical analysis about the mechanism of IT endogenously promoting the economic growth:the direct effect of the wide range of IT applications is to improve information delivery and efficiency of the transaction,the open IT networks and two-way interactivitis have been achieved the global mutual interaction and resource sharing in economic activities.Also,through the Internet and corporate intranets,the IT networks build a good carrier for the economic activities network among enterprises and social life,and the world economy closely banded together into a network of economic activity.Furthermore,not only has actual physical interconnection network,but more important are economic activity is closely linked together base on it,which integrate the economic significance-economic characteristics of network effects and increasing returns.Therefore,first of all focus on the depth study of the economic characteristics of IT.(2)IT promotes the economic growth by the means of endogenous technological progress,technology spillovers,economic structure and evolution of the spatial structure indirectly promote economic growth,the core of this mechanism is the division of labor and specialization,but also which is the core and the source of economic growth.In the framework of of specification and divison of labor,we can conduct comprehensive analysis of the production and consumption decisions and better understand the impact and significance of IT on the economy endogenous growth.Therefore,theoretical model of this process have been conducted by the inframarginal analysis tools of new classical economics in this paper.And,the model results show that IT with the characteristics of the network effect is the inevitable requirement of social division of labor development,accompanied by the flow of information to accelerate knowledge spillovers,technology progress endogenous,and reduce transaction costs and improve transaction efficiency,which endogenous promote the level of individual specialization and division of labor in society.Through changing the traditional mode of resource allocation,improving labor productivity,and optimizing the industrial structure,ultimately,IT is an important driving force to change the economic growth mode from the input methods efficiency to the more efficiency mode of deepening the specialization and division of labor.Based on the above theoretical model,empirical researches were studied from division of labor,space and industry perspective,by using the panel model?spatial constant coefficients econometrics model spatial varying coefficient econometrics model,input-output method,the Feder model and cointegration analysis method,with the aim to test IT and its network effects in promoting China's economic growth and verify the following theorical hypothesis:Hypothesis 1:By the promoting of the division of network effect,the application and development of IT,informalization will enhance the level of industrialization and promote economic growth.Hypothesis 2:The vigorous development of IT further enhanced the network structure evoluation and ties of regional economy.The sptial spillover effects of economic growth and the IT development of inter-regional interacte with each other,which increasingly becoming the main driving forces of economic growth.Hypothesis 3:IT and its spatial network effects and regional economic growth are not only spatial dependent,and because of the economy,natural resources,cultural,geographic and other differences between provinces,this dependence also has a significant spatial heterogeneity.Hypothesis 4:The information industry is sensitivite industry with the high driving degree,through input-output network system of the inter-industry,which promotes and stimulates spillover effects to other industries.The main conclusions and perspectives of the thesis are as the following:(1)Not only IT have the technical features of technological progress,but also have economic characteristics of general-purpose technology,quasi-public goods and the unique network structure,which led to the economic and organizational structure innovation in the development process.The essences of innovations were that the division of labore volution enhances people's level of specialization and promotes the emergence of new specialized division of labor which would be new development form of division of labor.Therefore,the deepening of specialization and division of labor are still the direction of the economic development of IT and network economy.The core sources of the IT 's effects on economic growth were division of labor network and its effects based on IT,which the important factors affect were the fixed learning and entry cost of IT products,IT infrastructure,network scale of information products,coordinated reliability and efficiency of trading of various products.(2)Based on the inframarginal model,this thesis integrated the industrial intermediate products,information intermediate goods,transaction costs of information equipment and learning cost that final products as well as circuitous production required.In this model,IT is new production factor and match with traditional production factors,togetherly which have effects on final products,and the level of producer-consumer specification,the above process were endogenous.This mechanism can better explain endogenous microscopic mechanisms of the advances in IT,services,products and equipment of IT,and industrialization and informationlization promote each other.(3)From the point view of the division of labor,the mechanisms of IT's direct and indirect contribute to economic growth were:IT was both productive industry and trading industry.On one hand,IT and its related manufacturing as productive industry endogenous genereated by IT technology progress,which had direct contribution to economy growth,on the other hand,the more extensive and profound indirect contribution of IT was that IT,as trading products,entered the efficient circuitous division of labor structure,and then lead the divion of labro more extensive and more deepening and form the IT services industry.Industrialization and informationlization were interwoven to form a new division of the network.Afterwards the relative structure of labor force,the investment,international trad e and resources would indirectly change causing the industrial structure was changed and optimized.At the same time,the network of IT division of labor was self-evolution and generated increasing returns to promote sustained economic growth.(4)The spatial spillover effects of IT were embodied in self technical and economic network,as well as the economic growth of the regional neighbors,to promote regional economic growth.And the industrial spillover effects of IT were embodied in continuous innovation,development and merge of IT industry,which led to the generation of a series of related industries and changes and promote,stimulate and had spillover effects on other industries through the input-output industry production system.(5)Finally,the above all hypothesis were proved and empirical researches showed that the network effect of divison of labor and industry network effects of IT were increasingly significant in China,and had played a improtand role in promoting economic growth and economic structure optimization.But there wer still large room for improvement,which need more hard works to promote the merge of informalization and industrialization,the independent creative innovation capability of IT manufacturing to owe core technical capabilities and the enhancement of IT service industry development.The spatial spillover effects of IT were embodied in the spatial spillover effects of neighbored regional economy growth,the spatial spillover effects of IT itself was not significant,the spatial heterogeneity of significant IT was not significant,which proved that IT development of China was still in the primary stage of the wide applications and need further deepening and diffusion. |
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