农产品直播效果影响因素分析

随着互联网技术、网络技术等与农产品深度融合,新一轮农产品销售模式孕育兴起.农产品直播销售为各行业带来巨大的商机,农产品直播已经成了农民的"新农具",各大直播平台都开展了各种直播活动.在前人研究的基础上,结合直播实践,通过因子分析法分析农产品直播效果的影响因素,以期改善农产品直播效果,促进农产品销售.     

异质性环境规制、技术创新与中国工业绿色化

基于中介效应模型和2007~2016年中国省际面板数据，构建异质性环境规制、技术创新与工业绿色化的作用机理理论分析框架，并通过构建异质性环境规制指标体系和工业绿色化指标体系将异质性环境规制与技术创新驱动工业绿色化的作用机理进行实证检验。研究发现：行政型环境规制对工业绿色化起抑制作用，不存在技术创新中介效应；市场型环境规制对工业绿色化的影响存在部分中介效应，可通过技术创新"挤出效应"抑制工业绿色化；公众型环境规制与工业绿色化关系只有中介效应，且公众型环境规制通过技术创新"激励效应"促进工业绿色化；异质性环境规制驱动工业绿色化的技术创新中介效应的研究结论经稳健性检验依然不变。研究认为：在推进异质性环境规制驱动工业绿色化过程中，应充分利用公众型环境规制驱动技术创新"激励效应"，同时应有效规避市场型环境规制驱动技术创新"挤出效应"。     

Customer reactions to self-checkout discontinuance

Self-service technologies (SSTs) increasingly permeate retail space. Yet, sometimes retailers decide to revert to human-delivered service mode by discontinuing their incumbent SST. In this study, we examine how self-checkout (SCO) discontinuance affects customers’ perceptions of SCO technology and purchase behavior. We conduct a natural field experiment by surveying two groups of customers pre- and post- SCO discontinuance: treatment group (who experience discontinuance) and control group (who do not experience discontinuance). Leveraging difference-in-differences analyses, we find that SCO discontinuance results in decreases in customers’ satisfaction with technology, intentions to use technology, perceived simplicity of technology, and basket size. Our results inform managers of the potential downsides of discontinuing SST and provide corroborating evidence of the technology’s benefits.     

泸县农村宅基地有偿使用制度改革效果评价

[目的]宅基地有偿使用制度研究有利于推进宅基地制度改革,缓解无偿无限期带来的土地超占乱占和闲置问题。[方法]文章运用层次分析法和模糊综合评价法对2016年和2018年泸县农村宅基地有偿使用制度改革政策效果进行评价。[结果]政策的开展能有效推进村民自治建设进程,但政策的实施要注重公开透明性;有偿使用政策能有效缓解一户多宅、低效闲置、超占乱占等土地浪费现象实现土地的节约集约利用;政策的实施能有效地改善基础设施和农村面貌,但对泸县生产方式转变、新业态发展、农户生活水平提升影响力较小;总体来看农户对有偿使用政策满意度和支持度较高。[结论]针对当前有偿使用制度改革,该文认为宅基地有偿使用制度改革还应该完善有偿使用费收取管理政策,增强政策执行透明度;注重基层队伍建设,实现有偿使用费保值增值;合理选择安置模式,发展农村新业态;加强宅基地有偿使用与有偿退出的高效联动,推进宅基地制度改革进程。     

Factors affecting classroom participation and how participation leads to a better learning

The purpose of this paper is twofold. First, we analyze various course- and student-related factors that affect participation grades within several college accounting classes. The second purpose is to determine whether in-class participation grades have an effect on exam performance in these classes. We find that, unlike in liberal arts and sciences courses, in accounting courses, participation grades for female students do not differ from participation grades for their male counterparts, regardless of class level. Overall, course level and student major have no direct effect on participation grades; however, the accounting majors and students in the lower level courses have better attendance than do non-accounting majors and students in more advanced courses. We observe that class schedule, in particular class duration and semester, affects students’ participation performance. Lastly, we find that students who participate more in classroom discussions perform 25% better on exams than do those with lower participation grades. This relationship holds for the three elements of participation grading: frequency of participation, consistency of participation, and attendance.     

Trump’s Effect on the Chinese Stock Market

U.S. President Donald J. Trump tweets frequently to communicate his thoughts to the public. We quantitatively evaluate the impact of Trump's China-related tweets on the Chinese stock market. We find that following Trump’s inauguration, his tweets with a positive sentiment significantly increase abnormal returns for the manufacturing industry in the Chinese stock market. Furthermore, an increase in the absolute value of his positive sentiment increases both the trading volume and volatility of the market. The positive effect is more pronounced for those subindustries with high exposure to international trade and stronger business relations with the United States than for other subindustries. The results are robust for various sensitivity tests.     

贵州的脱贫和发展：基于三因子耦合的解析

贵州的脱贫和发展案例表明，欠发达地区的脱贫和发展是集合“核心设施、骨干领域、环境机遇”三大因子共同发力的结果。这一发现挑战了当代主流发展理论，并在落后国家或区域具有广泛复制的价值。这种新发展观不只是一种自洽且连贯的学说，还可作为引导明智行动的机制对待，因而深具实践意义。可以把这三个强关联性词汇转换为规范且符合逻辑的陈述以激发洞见，充实当代发展理论，同时为其他不发达地区的贫困治理和经济发展提供经验和借鉴。     

Can stable environmental protection officials’ tenure reduce illegal emissions?

Based on the day-night PM_2.5 difference of the nearest atmospheric monitoring points to measure whether there is illegal emission, this paper explores the impact of environmental protection officials' tenure (EPLT) on illegal emissions. The results show that there is a positive correlation between EPLT and illegal emissions. Stable EPLT can reduce illegal emissions by increasing environmental information disclosure and environmental subsidies. It can increase illegal emissions by weakening public pollution reporting and media supervision, environmental law enforcement and promoting corruption. In addition, EPLT can increase illegal emissions as EPLT is less than 3.55 years, while EPLT can increase illegal emissions as EPLT exceeds 6.21 years. Further, when mayor's tenure and EPLT are both stable, the promotion effect of EPLT on illegal emission is stronger. Stable company director's tenure can also aggravate the promotion effect of EPLT on illegal emissions.     

提振消费要关注政策偏好的社会结构效应

新冠肺炎疫情爆发之后,人们非常关注通过提振消费来防止经济出现大幅度下滑。事实上,提振消费政策同时也具有社会政策属性。调查表明,在双循环背景下,通过社会政策维持一定的生计方式,并保持人们的消费水平具有重要意义。从对企业家FR、小手工业者BF与房屋中介LC的访谈资料以及在麓村、唐村的调查情况来看,人们在理解提振消费政策时具有共同的叙事特征。叙事本身具有鲜明的政策偏好,其核心是一定空间背景下结构与利益的分配正义问题。而风险社会与低欲望社会特征的并存深刻地影响着提振消费政策的制定,是行动者要面对的情境。为此,需要从规则与制度、空间与代际等长期性和持续性的角度系统思考提振消费政策的受益对象与受益群体,防止政策偏好所带来的结构性挑战。     

资本外逃的经济效应与应对政策选择研究

资本外逃是一个复杂的经济问题,是由多种原因造成的,并会给一国经济发展带来不可估量的风险和损失。基于此,论文梳理了资本外逃的研究现状,提出了资本外逃所产生的经济效应,在此基础上,提出了资本外逃的政策选择,为一国在治理资本外逃时提供了政策选择和借鉴。