Deals with the application of Kreiss resolvent condition in the error growth analysis of numerical methods, and studies the stability of Runge Kutta method in respect of Kreiss resolvent condition with emphasis on the...Deals with the application of Kreiss resolvent condition in the error growth analysis of numerical methods, and studies the stability of Runge Kutta method in respect of Kreiss resolvent condition with emphasis on the study on the subclass of collocation methods with abscissas in [0,1] by applying the methods to the test equation U′(t)=λU(t)+μU(t-τ)τ>0 with complex constraints μ and λ, and proves under some assumptions on the R K methods that the error growth is uniformly bounded in the stability region.展开更多
Over the years,Hisense has formed an operation model that integrates production,sales and R&D globally,and built a global collaborative R&D system,which has laid a solid foundation for standardization.Hisense ...Over the years,Hisense has formed an operation model that integrates production,sales and R&D globally,and built a global collaborative R&D system,which has laid a solid foundation for standardization.Hisense keeps including advanced achievements and mature production experience in standards,injecting impetus into the innovation and high-quality development of the industry.展开更多
In the Acknowledgements section of this article,the grant number"2020YFE0205900"relating to"National Key R&D Program of China"was missing,it has been included and the corrected Acknowledgements...In the Acknowledgements section of this article,the grant number"2020YFE0205900"relating to"National Key R&D Program of China"was missing,it has been included and the corrected Acknowledgements section is given below.展开更多
By the end of the 14th Five-Year Plan(2021-2025)period,the world’s second-largest economy is expected to reach RMB 140 trillion,contributing roughly 30 percent of global growth.Beyond sheer scale,the plan has catalyz...By the end of the 14th Five-Year Plan(2021-2025)period,the world’s second-largest economy is expected to reach RMB 140 trillion,contributing roughly 30 percent of global growth.Beyond sheer scale,the plan has catalyzed important breakthroughs:R&D intensity nears OECD levels,green electricity now powers one in three kilowatts,and over 95 percent of Chinese citizens enjoy universal healthcare and pension coverage.From its undisputed manufacturing leadership to the planet’s largest 5G network,China has cemented its role as a pillar of global stability and growth.展开更多
Jingwei Intelligent Textile Machinery Co.,Ltd.is a globally leading enterprise in the R&D and manufacturing of textile machinery,affiliated with China National Machinery Industry Group(SINOMACH).As the first moder...Jingwei Intelligent Textile Machinery Co.,Ltd.is a globally leading enterprise in the R&D and manufacturing of textile machinery,affiliated with China National Machinery Industry Group(SINOMACH).As the first modern textile machinery manufacturing base in New China,the company has developed over 70 years to establish a full lifecycle service capability of"machines+components+services+modifications."Its core products,such as Ring Spinning Frames and Combers,feature internationally advanced technologies.With products exported to over 40 countries and regions,the company is committed to providing global customers with intelligent,green textile equipment and full-process solutions.展开更多
文章运用逐步最小二乘回归、分位数回归、灰色预测模型构成多模型联用方法,系统评测企业研究与开发(research and development,R&D)经费投入的影响机制及未来趋势。研究结果表明:基于多模型联用的评测方法,可精准直观地评测科技企业...文章运用逐步最小二乘回归、分位数回归、灰色预测模型构成多模型联用方法,系统评测企业研究与开发(research and development,R&D)经费投入的影响机制及未来趋势。研究结果表明:基于多模型联用的评测方法,可精准直观地评测科技企业R&D经费投入的现状;地区生产水平、政府财政科技拨款、企业投入是驱动R&D经费增长的核心因素;政府财政支持具有跨层级的持续有效性,其回归系数稳定在0.953~1.085之间,凸显政策端对创新投入的稳定撬动作用;部分企业未来5年增速可能回调3.2%~5.7%,提示过度依赖单一主体的结构性风险。该文提出构建梯度化政策体系,强化财政支持的普惠性、稳定性,推动大中小企业协同创新等建议,为区域创新政策制定和企业研发投入优化提供理论方法支撑。展开更多
文摘Deals with the application of Kreiss resolvent condition in the error growth analysis of numerical methods, and studies the stability of Runge Kutta method in respect of Kreiss resolvent condition with emphasis on the study on the subclass of collocation methods with abscissas in [0,1] by applying the methods to the test equation U′(t)=λU(t)+μU(t-τ)τ>0 with complex constraints μ and λ, and proves under some assumptions on the R K methods that the error growth is uniformly bounded in the stability region.
文摘Over the years,Hisense has formed an operation model that integrates production,sales and R&D globally,and built a global collaborative R&D system,which has laid a solid foundation for standardization.Hisense keeps including advanced achievements and mature production experience in standards,injecting impetus into the innovation and high-quality development of the industry.
文摘In the Acknowledgements section of this article,the grant number"2020YFE0205900"relating to"National Key R&D Program of China"was missing,it has been included and the corrected Acknowledgements section is given below.
文摘By the end of the 14th Five-Year Plan(2021-2025)period,the world’s second-largest economy is expected to reach RMB 140 trillion,contributing roughly 30 percent of global growth.Beyond sheer scale,the plan has catalyzed important breakthroughs:R&D intensity nears OECD levels,green electricity now powers one in three kilowatts,and over 95 percent of Chinese citizens enjoy universal healthcare and pension coverage.From its undisputed manufacturing leadership to the planet’s largest 5G network,China has cemented its role as a pillar of global stability and growth.
文摘Jingwei Intelligent Textile Machinery Co.,Ltd.is a globally leading enterprise in the R&D and manufacturing of textile machinery,affiliated with China National Machinery Industry Group(SINOMACH).As the first modern textile machinery manufacturing base in New China,the company has developed over 70 years to establish a full lifecycle service capability of"machines+components+services+modifications."Its core products,such as Ring Spinning Frames and Combers,feature internationally advanced technologies.With products exported to over 40 countries and regions,the company is committed to providing global customers with intelligent,green textile equipment and full-process solutions.
文摘文章运用逐步最小二乘回归、分位数回归、灰色预测模型构成多模型联用方法,系统评测企业研究与开发(research and development,R&D)经费投入的影响机制及未来趋势。研究结果表明:基于多模型联用的评测方法,可精准直观地评测科技企业R&D经费投入的现状;地区生产水平、政府财政科技拨款、企业投入是驱动R&D经费增长的核心因素;政府财政支持具有跨层级的持续有效性,其回归系数稳定在0.953~1.085之间,凸显政策端对创新投入的稳定撬动作用;部分企业未来5年增速可能回调3.2%~5.7%,提示过度依赖单一主体的结构性风险。该文提出构建梯度化政策体系,强化财政支持的普惠性、稳定性,推动大中小企业协同创新等建议,为区域创新政策制定和企业研发投入优化提供理论方法支撑。
