基于公共价值视角的高端人才“双创”平台体制机制研究——以粤港澳大湾区为研究对象

高端人才是实现创新驱动发展战略的关键资源，而“双创”平台则为高端人才创新创业提供了最佳“舞台”。以公共价值为实践导向，能够为积极推进中国高端人才创新创业服务的供给侧结构性改革提供优选路径。“双创”服务供给结构失衡的矛盾不仅表现在平台的组织和技术能力两个方面，而且在政策环境和市场环境方面也存在脱节与滞后的结构性短板。要有效补齐“能力支撑错位”和“环境支持不足”等制度短板，须借鉴三螺旋理论，坚持“人才驱动”理念，建立“人才链-创新链-产业链-资金链-政策链”五链融合的非线性多元协同模式，不断完善“双创”平台体制机制。     

区域双创示范基地创新创业生态环境主要影响指标分析

2015年李克强总理在政府工作报告中提出“大众创业，万众创新”的重大战略举措，2016年国务院又先后部署建设120个大众创业万众创新示范基地。为探究在示范基地发展中影响创新创业生态环境的关键性因素，本文采用大数据技术，从各大统计年鉴、政府官网、第三方数据提供商等渠道采集了上千万条数据并清洗后，以29个高新区和经开区区域示范基地为例构建指标评价体系，并通过因子分析的方法来计算各示范基地双创生态环境的综合得分进行综合分析，并对区域示范基地发展提出相应建议。     

国家审计与城市创业活跃度

基于国家审计信息理论和免疫系统理论，以中国278个城市2009—2018年的面板数据为样本，分析国家审计对城市创业活跃度的影响。研究表明，国家审计监督治理能够显著提升城市创业活跃度，该结论在一系列稳健性检验后依然成立。机制分析发现，国家审计作为一项外部监督机制，能够改善地区政务、市场、金融和司法环境，进而提升城市创业活跃度。进一步，国家审计的治理效应在东部地区、规模较小城市以及高政府创新偏好的样本中更明显。研究结论印证了高质量审计监督能够有效保障经济社会高质量发展，切实将制度优势转化为治理效能，进而优化城市创业环境、提高城市创业活跃度。     

Mass gatherings contributed to early COVID-19 mortality: Evidence from US sports

Social distancing is important to slow the community spread of infectious disease, but it creates enormous economic and social cost. Thus, it is important to quantify the benefits of different measures. We study the ban of mass gatherings, an intervention with comparably low cost. We exploit exogenous variation in the number of National Basketball Association and National Hockey League games, which arises due to the leagues' predetermined schedules, and the sudden suspension of the 2019–2020 seasons. We find that, among clusters of counties that are adjacent to sports venues, each additional mass gathering increased the cumulative number of COVID-19 deaths by 10.3%.     

The impact of gender diversity on shareholder wealth: Evidence from European bank M&A

We explore the association between board gender diversity and shareholder value creation. Specifically, we investigate the impact of gender diversity on the economic impact of bank mergers and acquisitions (M&A). We employ a multi-year sample of M&A announced by European listed banks and find that: (i) the presence of women on the board of directors has a positive and statistically significant effect on acquirer gains; and (ii) boards with three or more women, or where women represent more than 25% of the board, have a stronger impact on acquirer gains than in the opposite case, consistent with critical mass theory. Moreover, banks with a critical mass of female directors perform better in undertaking value-enhancing M&A after the global financial crisis. Policy makers and practitioners could benefit from the findings by exploiting the advantages of board heterogeneity in terms of gender.     

The community impact of school-shootings on stress-related emergency department visits

School-shootings can enormously impact U.S. gun policy, but very little is known about the community mental health impact of school-shootings. We used difference-in-differences and event study analyses to compare stress-related ED visits in zip-codes within 5 miles (exposed) and in zip-codes 10–15 miles from (control) school-shootings before and after school-shootings using data from California, 2005–2011. School-shootings and fatal school-shootings were associated with annual increases of 0.7 and 1.5 stress-related ED visits per 1000 people, increases of 7% and 14%, respectively, compared to pre-shooting utilization. These previously unmeasured costs of school-shootings reinforce calls to prevent gun violence, especially in schools.     

柔软剂BT在腈纶绒线上的应用

国内外腈纶织物柔软整理正由传统的手感改良向功能化、仿动物毛感方向发展。本文研究了柔软剂BT在腈纶绒线上的工艺条件,并从柔软剂BT的性能测试、柔软剂用量、温度影响、时间影响进行了探讨。实验结果表明,柔软剂BT柔软效果好,绒线柔软丰满、毛感强、而且耐洗、抗静电,并且不影响染色色光。     

中国科协英文网国际传播能力提升研究

本文从中央媒体头部效应明显、科技类行业媒体积极探索和高影响力平台渠道较少三方面分析了我国科技创新国际传播能力现状。在此基础上，从受众和访问量分析、栏目设置、内容产品质量和访问体验四个方面分析总结了中国科协英文网国际传播能力现状。进而从提高汉英新闻编审能力、做好主体本位表达、引领全国学会英文网站发展和推出“中国科学家”品牌栏目四个方面对已有成功经验进行总结凝练并确定下阶段着力提升的重点之处。基于以上分析，为提升中国科协英文网国际传播能力、助推中国科协英文网长足发展和让世界了解并理解中国科技群团等目标给出建议。     

地方政府防范征地冲突群体性事件话语研究

研究目的:剖析地方政府防范征地冲突群体性事件的话语,分析话语的产生、扩散和接收,实证测度地方政府防范征地冲突群体性事件话语的有效性和影响程度。研究方法:定性(演绎、归纳和解释)和定量(结构方程模型)相结合。研究结果:(1)话语有效性与官方话语满意度正相关,在1%的水平下显著;(2)官方话语满意度与政府公信力正相关,在1%的水平下显著;(3)官方话语满意度与政府形象正相关,在5%的水平下显著;(4)政府公信力对政府形象的影响没有通过显著性检验。研究结论:提升话语的有效性、倾听民众的心声、做到办事有效及透明等,能够提高群众对官方话语的满意度。     

大断面砂质板岩隧道围岩动态设计分析——以道吾山特长隧道为例

通过现场取样得到的试样组围岩单轴饱和抗压强度数据，进一步计算出该试样组数据平均值与标准差，采用试样组数据标准差除以平均值得到试样组数据变异系数?。之后采用统计学公式，计算出试样组数据围岩饱和抗压强度修正标准值，同时考虑地下水、主要软弱结构面产状及初始应力状态等修正因素的影响，针对岩体基本质量指标BQ值进行修正，得出岩体基本质量指标修正值[BQ]，结合岩体的定性特征进行综合评判，确定围岩详细分级，从而建立起隧道围岩动态设计体系。