The influence of electron screening on electron on electron capture at the presupernova stage for key temperature mass condition is discussed. It is shown that the rate of change of electron fraction evidently decreas...The influence of electron screening on electron on electron capture at the presupernova stage for key temperature mass condition is discussed. It is shown that the rate of change of electron fraction evidently decreased with the electron screening taken into account.展开更多
This paper summarized the three things included in concept of core-competitiveness： integrative ability, core technology and core product. It reviewed main factors for increasing core-competitiveness, which include c...This paper summarized the three things included in concept of core-competitiveness： integrative ability, core technology and core product. It reviewed main factors for increasing core-competitiveness, which include core technology, resource integration, information exchange and strategic alliance establishment. It studied the wildly used indicators in core-competitiveness assessment model, such as financial status, business management, technology innovation and enterprise culture. Through case study in China Railway Jiujiang Bridge Engineering Co.Ld, the writer got the conclusion that Chinese Railway and Bridge enterprises should focus on industrial integration and innovation to enhance core-competitiveness.展开更多
文摘The influence of electron screening on electron on electron capture at the presupernova stage for key temperature mass condition is discussed. It is shown that the rate of change of electron fraction evidently decreased with the electron screening taken into account.
文摘This paper summarized the three things included in concept of core-competitiveness： integrative ability, core technology and core product. It reviewed main factors for increasing core-competitiveness, which include core technology, resource integration, information exchange and strategic alliance establishment. It studied the wildly used indicators in core-competitiveness assessment model, such as financial status, business management, technology innovation and enterprise culture. Through case study in China Railway Jiujiang Bridge Engineering Co.Ld, the writer got the conclusion that Chinese Railway and Bridge enterprises should focus on industrial integration and innovation to enhance core-competitiveness.
