共享经济可持续性评价：社会感知与客观绩效     

董晓松  霍依凡  赵星 《科研管理》2023,44(1):79-88

共享经济行业可持续性评价的社会感知和客观绩效不一致将造成认知错位、投资误判和政策失效等结果。本文在线挖掘2017—2019年我国主要社交媒体上29 771条文本信息，并收集行业统计数据，综合测度共享经济行业的可持续性并比较其差异。研究发现：社会公众并不认为共享经济行业具有显著的总体可持续性，而且行业实际绩效展现的可持续性与社会大众认知截然不同。进一步发现：受限于主观认知能力，社会公众认为共享经济可持续性主要来自可观察到的行业外部经济和外部生态等维度，但客观绩效表明共享经济行业内部的经济和外部的技术优势才是其可持续性的重要支撑。此外，二者评价的差异在住宿与医疗等产能共享内部过程不易被大众观察的行业中最为突出。  相似文献   

The effect of toxicity on COVID-19 news network formation in political subcommunities on Reddit: An affiliation network approach     

《International Journal of Information Management》2021

Political polarization remains perhaps the “greatest barrier” to effective COVID-19 pandemic mitigation measures in the United States. Social media has been implicated in fueling this polarization. In this paper, we uncover the network of COVID-19 related news sources shared to 30 politically biased and 2 neutral subcommunities on Reddit. We find, using exponential random graph modeling, that news sources associated with highly toxic – “rude, disrespectful” – content are more likely to be shared across political subreddits. We also find homophily according to toxicity levels in the network of online news sources. Our findings suggest that news sources associated with high toxicity are rewarded with prominent positions in the resultant network. The toxicity in COVID-19 discussions may fuel political polarization by denigrating ideological opponents and politicizing responses to the COVID-19 pandemic, all to the detriment of mitigation measures. Public health practitioners should monitor toxicity in public online discussions to familiarize themselves with emerging political arguments that threaten adherence to public health crises management. We also recommend, based on our findings, that social media platforms algorithmically promote neutral and scientific news sources to reduce toxic discussion in subcommunities and encourage compliance with public health recommendations in the fight against COVID-19.  相似文献   

科学数据共享研究现状与展望   总被引：2，自引：0，他引：2  

毕达天  曹冉  杜小民 《图书情报工作》2019,63(24):69-77

[目的/意义] 分析科学数据共享的研究现状及其发展趋势，为促进国内相关理论研究与实践进展提供参考。[方法/过程] 通过对国内外文献进行梳理和归纳，提炼出与科学数据共享研究相关的三大类主题：科学数据共享发展需求、科学数据管理共享模式与机制和科学数据服务共享度与服务效果，并构建科学数据共享管理分析框架，该框架体现上述三类主题之间的因果关联，强调科学数据共享管理与服务的合理面、重要度、关键性。[结果/结论] 国内外现有研究尚存不足，未来研究在加强实证研究、着眼管理机制完善的同时，还需注重共享服务模式的创新。  相似文献   

Distribution and denomination in Papua New Guinea: a field method and its results     

Anthony J. Pickles 《Journal of Cultural Economy》2020,13(2):185-206

ABSTRACT

In highland Papua New Guinea wealth distribution after a windfall is typically concealed by the donor. This trend was made easier by the introduction of state-issued currency, such that wealth reckoning and especially distribution preferences are often shrouded in mystery. The researcher set out to learn how denomination structures those money transfers by employing a semi-structured interview method centered around hypothetical distributions based on everyday encounters. Across four tailored ‘scenarios,’ fifteen Papua New Guinean participants dwelt on who to give money to, why, and under what conditions. Observations are made about the driving forces in distribution practices, the pecuniary conception of certain relationships’ importance, and relationships that turn on local conceptions of how to capitalize on the way money operates, thus demonstrating the utility of a culturally sensitive quantitative methodology.  相似文献   

Analyzing Food Science Research for Publishing Characteristics as a Model for Understanding the Needs of Researchers     

Lutishoor Salisbury  Jeremy J. Smith  Abayomi Omotola Omolewu 《资料收集管理》2020,45(4):335-353

Abstract

This paper provides a methodology to study the characteristics of the research output from a university department. The faculty publications and their cited references over a 10-year period were used as the basis for this study to identify their publishing patterns and the types of material they are publishing; a core set of journals and other resources they are publishing in and citing over this period; the characteristics of the journals in which they publish and cite; the degree of openness of their publications and their citation advantage; and the age of resources that are referenced.  相似文献   

数据管理与数据治理的比较分析及其对制定科学数据开放共享政策的启示     

盛小平  宋大成 《图书情报工作》2020,64(22):4-10

[目的/意义] 比较分析数据管理与数据治理差异与联系，为制定科学数据开放共享政策提供参考。[方法/过程] 运用比较分析法，解析数据管理与数据治理在定义与内涵、功能、目标、原则、焦点领域5个方面的异同，由此解析其对制定我国科学数据开放共享政策的启示。[结果/结论] 数据管理与数据治理在定义与内涵、功能、目标、原则、焦点领域上都有显著差异，但两者也有内在联系。数据治理是成功实施数据管理的关键。认清两者的关系有助于明晰目前我国科学数据管理政策的不足之处，为今后完善科学数据管理办法提供参考，从而规划与制定实用的科学数据开放共享细则。  相似文献   

开放教育教师知识共享意愿研究     

沈际 《滁州职业技术学院学报》2020,(1):22-25

人在漫长的学习生涯中学习知识,并通过知识共享加速知识积累,开放教育教师所拥有的教学经验是其在长期的教学实践过程中积累的技巧或窍门,他们对知识共享既期待又有顾虑,实现知识共享的技术手段也各有偏好。  相似文献   

高职院校微课教学的现状、问题及优化路径探析     

张红兵 《包头职业技术学院学报》2020,(1):49-52,70

针对高职院校微课教学在实践中存在的重比赛、轻应用,重形式、轻实效,重讲授、轻互动,重技术、轻内容等方面的问题,提出通过采取坚持和发挥学生的主体作用,探索基于“互联网+”的混合教学模式,完善对微课教学的激励制度等措施,以进一步规范微课教学,优化其在高职教学中的作用和效果。  相似文献   

共享模式下的集装箱空箱调运优化     

孙家庆  刘明丽  徐林坤  赵媛 《上海海事大学学报》2019,40(3):14-20

为解决共享模式下的集装箱空箱调运问题,基于航线、船舶运力、运输时间等限制性因素,以多决策期的空箱调运总成本最低为目标,建立集装箱共享系统的不确定需求随机机会约束模型。使用MATLAB,利用模拟退火(simulated annealing, SA)算法与遗传算法(genetic algorithm,GA)结合的混合算法进行数值求解和算例分析,表明模型是有效的,对船公司制订空箱共享、舱位共用策略有参考价值。  相似文献   

数据驱动范式下政府开放数据状态及其主体行为状态的关系挖掘     

陈玲  段尧清 《图书情报工作》2020,64(2):13-22

[目的/意义] 在数据驱动范式情境下，揭示政府门户网站开放数据状态及其主体行为状态之间的内部关联，推动政府数据开放效果和进程。[方法/过程] 采用爬虫方法抓取上海市政府数据门户网站中各开放数据集，在对各数据集指标进行相关分析的基础上，采用Stepwise探索其回归关系，筛选得出关联度较高的变量；进一步对关系显著的变量进行PLS回归检验，得出政府开放数据状态与其主体行为状态的内部关联。[结果/结论] 在政府数据开放进程中，政府部门的主体行为比数据自身的客体特征对公众主体行为的影响更大。在影响公众评分的因素中，政府开放保密级别的影响因子最大，且具有显著负向影响作用；政府更新频率、政府首次开放时间、数据格式可机读性对公众评分具有显著正向影响作用。  相似文献