连续钢箱梁桥抗倾覆稳定探讨

通过互通立交(27+41+27)m连续钢箱梁工程,对连续钢箱梁进行计算分析。本次分析采用MIDAS软件建立模型,考虑钢箱梁在最不利荷载组合下的最大内力,进行结构应力和挠度分析。     

新背景下中俄贸易发展研究——基于商品结构和出口商品比较优势的视角

俄罗斯一直以来就是中国重要的经济贸易伙伴。在共建丝绸之路经济带、乌克兰局势、俄罗斯加入WTO等中俄贸易新背景下,本文以近几年中俄贸易现状、中俄贸易结构以及中国出口商品比较优势为基础,分析中俄贸易发展的影响因素,并提出应通过优化中国对俄罗斯出口商品结构、扩大进口俄罗斯能源类产品和高新技术产品、积极促成中俄自由贸易协定、倡导中国企业走出去、争取制定双边贸易规则的主动权等措施来促进中俄贸易的发展。     

Updating Input–Output Tables with Benchmark Table Series

Numerous methods have been proposed to update input–output (I–O) tables. They rely on the assumption that the economic structure will not change significantly during the interpolation period. However, this assumption may not always hold, particularly for countries experiencing rapid development. This study attempts to combine forecasting with a matrix transformation technique (MTT) to provide a new perspective on updating I–O tables. Under the assumption that changes in the trend of an economic structure are statistically significant, the method extrapolates I–O tables by combining time series models with an MTT and proceeds with only the total value added during the target years. A simulation study and empirical analysis are conducted to compare the forecasting performance of the MTT to the Generalized RAS (GRAS) and Kuroda methods. The results show that the comprehensive performance of the MTT is better than the performance of the GRAS and Kuroda methods, as measured by the Standardized Total Percentage Error, Theil's U and Mean Absolute Percentage Error indices.     

Venture capital,innovation, and growth: evidence from Chinese metropolitan data

Using panel data from 282 Chinese cities from 2003 to 2015, we estimate the impact of venture capital (VC) on innovation, employment, and payroll in metropolitan areas. Controlling for endogeneity, VC investments are significantly positively related to metropolitan innovation, employment, and payroll in a fixed effects panel regression and dynamic GMM estimation. Using the number of IPOs (Initial public offerings) in the city as an instrumental variable to again control for endogeneity, VC remains significant. Our results show that VC is significantly contributing to the metropolitan economy as a whole by supporting innovation, creating jobs, and generating wealth in the local cities.     

产业转型升级示范区高质量发展的大数据分析

2017、2019年,国家发展改革委、科技部、工业和信息化部、自然资源部、国家开发银行在全国分两批遴选创设了20个产业转型升级示范区。以第一批12个示范区为对象,通过社会媒体报道和地方政府工作报告大数据分析,研究其在探索传统产业改造、新兴产业发展、绿色发展、园区建设、产业集聚、以及优化营商环境、融入国家战略、加强区域协作等方面的建设成效和典型经验,可以发现,推动国家产业转型升级示范区高质量发展,应因地制宜谋划示范区发展定位,依据功能定位实施差异化产业战略,进一步完善示范区评估考核指标体系,充分发挥中央预算内投资激励导向作用。     

URC 522下跟单托收提示风险与SWOT分析

论文通过对国际跟单托收流程的分析,发现托收的风险与托收的提示有关。运用列举与列举的方法,解释了托收提示细节中潜在的可能性风险。并通过SWOT模型分析,说明了在跟单提示下进出口双方使用托收的优劣势所在以及策略的选择。     

当代大学生的网络道德现状与教育引导对策

网络时代的到来,为人们提供了便利。任何事物都具有两面性,网络也不例外。大学生日趋成为中国网民的主体,网络对大学生的思想观念、行为、道德规范的影响不容忽视。当代大学生网络道德现状既有积极的方面,也有消极的方面。我们要正确看待大学生网络道德中存在的问题,积极引导大学生正确对待网络的功能,对大学生网络道德中存在的问题予以重视,采取有效措施加强大学生的网络道德教育。