The process of innovative development is stimulated by cities as centers of accumulated （regional） growth and innovative enterprises as elements of urban space. Cities stimulate innovations by creating a specific de...The process of innovative development is stimulated by cities as centers of accumulated （regional） growth and innovative enterprises as elements of urban space. Cities stimulate innovations by creating a specific demand for innovations and innovative products as well as specific incentives such as preferable conditions for creation, accumulation, usage, and exchange of knowledge and information. Diffusion of ideas has an impact on changes in environment resulting in increase in dynamics of innovation, which means possibilities of innovative development for local firms. The paper highlights the idea of an innovative city with respect to the impact of innovations on city development. The concept of an innovative city is not clearly defined because the interpretation of innovation is differentiated and ambiguous except for common denominator of the novelty. The paper underlines the role of city＇s environment for innovations＇ creation acting as an incubator for clusters of firms, particularly those engaged in the process of high-tech involvement （technology parks）. The option of an innovative city approach presented here is the author＇s view on an innovative city＇s growth and it is based on the role of synergic interaction between innovative firms as elements of a city space and an innovative city itself.展开更多
National high-tech industrial development zones represent a major strategy of the Chinese government in developing high-tech industries and spurring regional economic growth. The effect of this policy is yet to be pro...National high-tech industrial development zones represent a major strategy of the Chinese government in developing high-tech industries and spurring regional economic growth. The effect of this policy is yet to be proven. Based on the panel data of 283 Chinese cities between 1984 and 2012, this paper investigates the effect of high-tech zones on regional economic development. Empirical results suggest that first, national hightech zones have remarkably enhanced regional GDP and per capita GDP growth, and this conclusion still holds true after multiple rounds of robustness test; second, the economic effect of national high-tech zones is subject to diminishing marginal return and compared with higher-tier cities, lower-tier cities benefited more from the creation of national hightech zones. This paper concludes that national high-tech zones where special policies are experimented and offered not only drive economic development but, if properly distributed across regions, may help reduce regional economic disparities as well. The results of this study provide important implications for the future distribution of national high-tech zones and the creation of other relevant policies.展开更多
The key technologies of precision blasting were put forward based on the characteristics of urban via- duct blasting demolition in complicated surroundings. Initial bending instability mechanics model of reinforcing s...The key technologies of precision blasting were put forward based on the characteristics of urban via- duct blasting demolition in complicated surroundings. Initial bending instability mechanics model of reinforcing steel bar frame of blasting fragmented pier and sequenced collapsed dynamic model were established for quanti- tative blasting design. Technologies of water pressure blasting were applied in multi-cell box girder fragmenta- tion. The detonating network of non-electric duplication crossover was adopted for the safety and reliability of ultra-long delay. The rationality of blasting scheme and parameters were validated by physical model test. Harm- ful effects were forecasted and controlled by integrated protective technologies. Specialization, cooperation, pre- cision, execution （SCPE） project management method was put forward for precision management. The key tech- nologies of precision demolition blasting can provide reference for similar proiects.展开更多
文摘The process of innovative development is stimulated by cities as centers of accumulated （regional） growth and innovative enterprises as elements of urban space. Cities stimulate innovations by creating a specific demand for innovations and innovative products as well as specific incentives such as preferable conditions for creation, accumulation, usage, and exchange of knowledge and information. Diffusion of ideas has an impact on changes in environment resulting in increase in dynamics of innovation, which means possibilities of innovative development for local firms. The paper highlights the idea of an innovative city with respect to the impact of innovations on city development. The concept of an innovative city is not clearly defined because the interpretation of innovation is differentiated and ambiguous except for common denominator of the novelty. The paper underlines the role of city＇s environment for innovations＇ creation acting as an incubator for clusters of firms, particularly those engaged in the process of high-tech involvement （technology parks）. The option of an innovative city approach presented here is the author＇s view on an innovative city＇s growth and it is based on the role of synergic interaction between innovative firms as elements of a city space and an innovative city itself.
基金sponsored by the National Natural Science Foundation Program(Approval No.71303185)the Social Sciences Planning Foundation Program of the Ministry of Education(Approval No.13XJA790003)+2 种基金the Social Sciences Foundation Program of Shaanxi Province(Approval No.12D124)the Program of Shaanxi Provincial Department of Education(Approval No.12JK0152)the Support Program for Outstanding Young Teachers of Northwest University(Approval No.PR12152)
文摘National high-tech industrial development zones represent a major strategy of the Chinese government in developing high-tech industries and spurring regional economic growth. The effect of this policy is yet to be proven. Based on the panel data of 283 Chinese cities between 1984 and 2012, this paper investigates the effect of high-tech zones on regional economic development. Empirical results suggest that first, national hightech zones have remarkably enhanced regional GDP and per capita GDP growth, and this conclusion still holds true after multiple rounds of robustness test; second, the economic effect of national high-tech zones is subject to diminishing marginal return and compared with higher-tier cities, lower-tier cities benefited more from the creation of national hightech zones. This paper concludes that national high-tech zones where special policies are experimented and offered not only drive economic development but, if properly distributed across regions, may help reduce regional economic disparities as well. The results of this study provide important implications for the future distribution of national high-tech zones and the creation of other relevant policies.
文摘The key technologies of precision blasting were put forward based on the characteristics of urban via- duct blasting demolition in complicated surroundings. Initial bending instability mechanics model of reinforcing steel bar frame of blasting fragmented pier and sequenced collapsed dynamic model were established for quanti- tative blasting design. Technologies of water pressure blasting were applied in multi-cell box girder fragmenta- tion. The detonating network of non-electric duplication crossover was adopted for the safety and reliability of ultra-long delay. The rationality of blasting scheme and parameters were validated by physical model test. Harm- ful effects were forecasted and controlled by integrated protective technologies. Specialization, cooperation, pre- cision, execution （SCPE） project management method was put forward for precision management. The key tech- nologies of precision demolition blasting can provide reference for similar proiects.
