创新投入是技术进步的驱动力,数字经济和金融发展是经济运行和创新的环境。分析数字经济、金融发展对我国科技创新投入影响机理并提出假设,收集2007~2023年沪深A股上市公司数据实证研究发现:数字经济、金融发展增加投资机会,降低企业融...创新投入是技术进步的驱动力,数字经济和金融发展是经济运行和创新的环境。分析数字经济、金融发展对我国科技创新投入影响机理并提出假设,收集2007~2023年沪深A股上市公司数据实证研究发现:数字经济、金融发展增加投资机会,降低企业融资成本,对企业增加科技创新投入有显著的正向影响,政府科技激励、FDI促进企业创新,但资产负债率对企业创新投入呈负向影响。建议促进金融发展、数字经济与信息科技引导融合,减轻科技创新投入成本,提高创新投入的精准度,促进金融区域均衡发展,利用内外市场两种资源,扩大研发资金渠道,发挥有为政府的引导,激发企业创新动力,提高企业研发能力。Innovation investment is the driving force of technological progress, and digital economy and financial development are the environment of economic operation and innovation. By analyzing the mechanism of digital economy and financial development on China’s scientific and technological innovation input and putting forward hypotheses, 137 listed companies in Shanghai and Shenzhen A-shares were collected for empirical research. The results show that the development of digital economy and finance increases investment opportunities, reduces the financing cost of enterprises, and has a significant positive impact on enterprises’ increase of investment in scientific and technological innovation. The government science and technology incentive and FDI promote enterprise innovation, but the asset-liability ratio has a negative impact on enterprise innovation investment. It is suggested to strengthen the integration of financial development with information technology and digital economy, reduce the cost of scientific and technological innovation, improve the precision of innovation investment, promote the balanced development of financial regions, make use of internal and external market resources, expand the sources of R&D funds, stimulate the power of scientific and technological innovation, and improve the ability of R&D investment of enterprises.展开更多
目的对肺癌患者术前体力活动干预有效性的系统评价进行再评价。方法计算机检索PubMed、Embase、Web of Science、CINAHI、Cochrane Library、OVID、中国生物医学文献数据库、中国知网、万方数据、维普数据库中关于肺癌患者术前体力活动...目的对肺癌患者术前体力活动干预有效性的系统评价进行再评价。方法计算机检索PubMed、Embase、Web of Science、CINAHI、Cochrane Library、OVID、中国生物医学文献数据库、中国知网、万方数据、维普数据库中关于肺癌患者术前体力活动干预有效性的系统评价,检索时限为建库至2022年12月20日。2名研究员评价文献方法学质量、汇总证据并分级。结果共纳入9篇系统评价,方法学质量1篇为高,1篇为低,7篇为极低。评价56个主要结局指标的证据质量,1条证据为高,11条证据为中,37条证据为低,7条证据为极低。结论肺癌患者术前体力活动干预可改善其运动能力、肺功能,降低术后肺部并发症风险,缩短置管及住院时间,但系统评价的方法学和证据质量总体较低,需开展更为严谨的研究以证实干预效果。展开更多
文摘创新投入是技术进步的驱动力,数字经济和金融发展是经济运行和创新的环境。分析数字经济、金融发展对我国科技创新投入影响机理并提出假设,收集2007~2023年沪深A股上市公司数据实证研究发现:数字经济、金融发展增加投资机会,降低企业融资成本,对企业增加科技创新投入有显著的正向影响,政府科技激励、FDI促进企业创新,但资产负债率对企业创新投入呈负向影响。建议促进金融发展、数字经济与信息科技引导融合,减轻科技创新投入成本,提高创新投入的精准度,促进金融区域均衡发展,利用内外市场两种资源,扩大研发资金渠道,发挥有为政府的引导,激发企业创新动力,提高企业研发能力。Innovation investment is the driving force of technological progress, and digital economy and financial development are the environment of economic operation and innovation. By analyzing the mechanism of digital economy and financial development on China’s scientific and technological innovation input and putting forward hypotheses, 137 listed companies in Shanghai and Shenzhen A-shares were collected for empirical research. The results show that the development of digital economy and finance increases investment opportunities, reduces the financing cost of enterprises, and has a significant positive impact on enterprises’ increase of investment in scientific and technological innovation. The government science and technology incentive and FDI promote enterprise innovation, but the asset-liability ratio has a negative impact on enterprise innovation investment. It is suggested to strengthen the integration of financial development with information technology and digital economy, reduce the cost of scientific and technological innovation, improve the precision of innovation investment, promote the balanced development of financial regions, make use of internal and external market resources, expand the sources of R&D funds, stimulate the power of scientific and technological innovation, and improve the ability of R&D investment of enterprises.
文摘目的对肺癌患者术前体力活动干预有效性的系统评价进行再评价。方法计算机检索PubMed、Embase、Web of Science、CINAHI、Cochrane Library、OVID、中国生物医学文献数据库、中国知网、万方数据、维普数据库中关于肺癌患者术前体力活动干预有效性的系统评价,检索时限为建库至2022年12月20日。2名研究员评价文献方法学质量、汇总证据并分级。结果共纳入9篇系统评价,方法学质量1篇为高,1篇为低,7篇为极低。评价56个主要结局指标的证据质量,1条证据为高,11条证据为中,37条证据为低,7条证据为极低。结论肺癌患者术前体力活动干预可改善其运动能力、肺功能,降低术后肺部并发症风险,缩短置管及住院时间,但系统评价的方法学和证据质量总体较低,需开展更为严谨的研究以证实干预效果。
