The production. characteristics. and commercialization of monolithic and composite titanium aluminides are summanzed with emphasis on use in the demanding aerospace industry. The attractive elevated temperature proper...The production. characteristics. and commercialization of monolithic and composite titanium aluminides are summanzed with emphasis on use in the demanding aerospace industry. The attractive elevated temperature properties combined with alow density make these materials of great interest, but inherently low 'forgiveness', and environmental concerns, must be overcome before widespread use will occur One synthesis method for the production of monolithic titanium aluminides-mechanical alloying- will be discussed in detail展开更多
Science and Technology Park, which plays a very important role in promoting rapid development of regional economy, has enjoyed various preferential policies in its unique development since China’s reform and opening ...Science and Technology Park, which plays a very important role in promoting rapid development of regional economy, has enjoyed various preferential policies in its unique development since China’s reform and opening up, which oppositely shows that the government has overlooked development outside the park and resulted in negative competition between the science and technology park and surrounding areas in resources and industry development, etc. Therefore, it is necessary and urgent to overcome the existing obstacles against coordinative development between the park and surrounding areas, to explore paths where the two can development coordinately and to achieve new breakthrough and innovation in coordinative development in subject, object, platform and mechanism.展开更多
Problems existing in the cultivation of marine science and technology talents in China were analyzed.For instance,regional distribution is unbalanced;training subjects are not systematic;guarantee mechanism is not per...Problems existing in the cultivation of marine science and technology talents in China were analyzed.For instance,regional distribution is unbalanced;training subjects are not systematic;guarantee mechanism is not perfect.For the existing problems,suggestions on the cultivation of marine science and technology talents in China were proposed,such as overall planning training strategy,forming an integrated training model,and optimizing guarantee mechanism.展开更多
Healthy development of agricultural science and technology parks needs perfect operation mechanism. On the basis of current situations,this paper came up with several safeguard measures for improving the operation mec...Healthy development of agricultural science and technology parks needs perfect operation mechanism. On the basis of current situations,this paper came up with several safeguard measures for improving the operation mechanism of agricultural science and technology parks,mainly including organization operation mechanism,technological guarantee mechanism,fund guarantee mechanism,and talent guarantee mechanism.展开更多
Industrialization of tropical agricultural science and technology is an essential part of tropical agricultural technological innovation.This paper firstly analyzed development mode of industrialization of tropical ag...Industrialization of tropical agricultural science and technology is an essential part of tropical agricultural technological innovation.This paper firstly analyzed development mode of industrialization of tropical agricultural science and technology in Chin and then came up with recommendations for developing industrialization of tropical agricultural science and technology.展开更多
Based on detail analysis of clutch engaging process control targets and adaptive demands, a control strategy which is based on speed signal, different from that of based on main clutch displacement signal, is put forw...Based on detail analysis of clutch engaging process control targets and adaptive demands, a control strategy which is based on speed signal, different from that of based on main clutch displacement signal, is put forward. It considers both jerk and slipping work which are the most commonly used quality evaluating indexes of vehicle starting phase. The adaptive control system and its reference model are discussed profoundly. Taking the adaptability to different starting gears and different road conditions as examples, some proving field test records are shown to illustrate the main clutch adaptive control strategy at starting phase. Proving field test gives acceptable results.展开更多
This paper aims to explore the effects of market-oriented reforms on industrial technology progress.Based on a theoretical analysis,we performed an empirical study with a marketization index and panel data of high-tec...This paper aims to explore the effects of market-oriented reforms on industrial technology progress.Based on a theoretical analysis,we performed an empirical study with a marketization index and panel data of high-tech sectors in China.We found that market-oriented reforms had significantly propelled technology progress in China’s high-tech sectors,and the effects became more evident after China’s WTO entry.Market-oriented reforms induced technology progress by increasing capital allocation efficiency,R&D input,and technology diffusion.Among various aspects of market-oriented reforms,the institutional environment exerted the most significant effects,followed by the economy’s non-state sector,product market development,and factor market development;the government-market relationship index influenced technology’s progress the least.The effects are heterogeneous across sectors with different technology attributes and more significant for technology-intensive sectors.Our findings offer policy implications for China’s ongoing market-oriented reforms and policy design for technology progress in high-tech sectors.展开更多
文摘The production. characteristics. and commercialization of monolithic and composite titanium aluminides are summanzed with emphasis on use in the demanding aerospace industry. The attractive elevated temperature properties combined with alow density make these materials of great interest, but inherently low 'forgiveness', and environmental concerns, must be overcome before widespread use will occur One synthesis method for the production of monolithic titanium aluminides-mechanical alloying- will be discussed in detail
文摘Science and Technology Park, which plays a very important role in promoting rapid development of regional economy, has enjoyed various preferential policies in its unique development since China’s reform and opening up, which oppositely shows that the government has overlooked development outside the park and resulted in negative competition between the science and technology park and surrounding areas in resources and industry development, etc. Therefore, it is necessary and urgent to overcome the existing obstacles against coordinative development between the park and surrounding areas, to explore paths where the two can development coordinately and to achieve new breakthrough and innovation in coordinative development in subject, object, platform and mechanism.
基金Supported by Foundation for Humanities and Social Sciences Research Planning of Ministry of Education of Shanghai City(19YJA630058)
文摘Problems existing in the cultivation of marine science and technology talents in China were analyzed.For instance,regional distribution is unbalanced;training subjects are not systematic;guarantee mechanism is not perfect.For the existing problems,suggestions on the cultivation of marine science and technology talents in China were proposed,such as overall planning training strategy,forming an integrated training model,and optimizing guarantee mechanism.
基金Supported by Social Science Foundation Project of Shaanxi Province"Social Survey of the Northwest in the Period of the Republic of China"(2016H009)
文摘Healthy development of agricultural science and technology parks needs perfect operation mechanism. On the basis of current situations,this paper came up with several safeguard measures for improving the operation mechanism of agricultural science and technology parks,mainly including organization operation mechanism,technological guarantee mechanism,fund guarantee mechanism,and talent guarantee mechanism.
文摘Industrialization of tropical agricultural science and technology is an essential part of tropical agricultural technological innovation.This paper firstly analyzed development mode of industrialization of tropical agricultural science and technology in Chin and then came up with recommendations for developing industrialization of tropical agricultural science and technology.
文摘Based on detail analysis of clutch engaging process control targets and adaptive demands, a control strategy which is based on speed signal, different from that of based on main clutch displacement signal, is put forward. It considers both jerk and slipping work which are the most commonly used quality evaluating indexes of vehicle starting phase. The adaptive control system and its reference model are discussed profoundly. Taking the adaptability to different starting gears and different road conditions as examples, some proving field test records are shown to illustrate the main clutch adaptive control strategy at starting phase. Proving field test gives acceptable results.
基金by the General Program of the National Science Foundation of China(NSFC)“Study on the Effects of Factor Price Distortion on the Technology Sophistication of Exports from High-tech Sectors and Policy Response”(Grant No.71773107).
文摘This paper aims to explore the effects of market-oriented reforms on industrial technology progress.Based on a theoretical analysis,we performed an empirical study with a marketization index and panel data of high-tech sectors in China.We found that market-oriented reforms had significantly propelled technology progress in China’s high-tech sectors,and the effects became more evident after China’s WTO entry.Market-oriented reforms induced technology progress by increasing capital allocation efficiency,R&D input,and technology diffusion.Among various aspects of market-oriented reforms,the institutional environment exerted the most significant effects,followed by the economy’s non-state sector,product market development,and factor market development;the government-market relationship index influenced technology’s progress the least.The effects are heterogeneous across sectors with different technology attributes and more significant for technology-intensive sectors.Our findings offer policy implications for China’s ongoing market-oriented reforms and policy design for technology progress in high-tech sectors.