FibVID: Comprehensive fake news diffusion dataset during the COVID-19 period

As the SARS-CoV-2 (COVID-19) pandemic has run rampant worldwide, the dissemination of misinformation has sown confusion on a global scale. Thus, understanding the propagation of fake news and implementing countermeasures has become exceedingly important to the well-being of society. To assist this cause, we produce a valuable dataset called FibVID (Fake news information-broadcasting dataset of COVID-19), which addresses COVID-19 and non-COVID news from three key angles. First, we provide truth and falsehood (T/F) indicators of news items, as labeled and validated by several fact-checking platforms (e.g., Snopes and Politifact). Second, we collect spurious-claim-related tweets and retweets from Twitter, one of the world’s largest social networks. Third, we provide basic user information, including the terms and characteristics of “heavy fake news” user to present a better understanding of T/F claims in consideration of COVID-19. FibVID provides several significant contributions. It helps to uncover propagation patterns of news items and themes related to identifying their authenticity. It further helps catalog and identify the traits of users who engage in fake news diffusion. We also provide suggestions for future applications of FibVID with a few exploratory analyses to examine the effectiveness of the approaches used.     

On capacity allocation for operating rooms

This paper studies capacity planning decisions that allocate surgical specialties to operating-room (OR) days with the objective of minimizing total expected costs due to penalties for any patients who are not accommodated and for under- (i.e., idleness) and over- (i.e., overtime) usage of OR capacity. It presents a prototypical non-linear, stochastic programming model to structure relevant and practical features of the problem and four adaptations, along with associated solution approaches, with the goal of facilitating solution by overcoming the computational disadvantages of the prototype. Each of these adaptations offers advantages but is also attended by disadvantages. Computational tests compare the four adaptations and solution approaches with respect to solution quality and run time.     

How much carbon offsetting and where? Implications of efficiency,effectiveness, and ethicality considerations for public opinion formation

A fundamental policy design choice in government-led climate change mitigation is: what role should flexibility mechanisms like carbon offsetting play in reducing greenhouse gas (GHG) emissions. Since public opinion affects the policy choices of government, we investigate how arguments regarding carbon offsetting's economic efficiency, effectiveness, and ethicality, which have been key points in the public debate, impact the public's preferences. We fielded an online framing experiment in the United States (N=995) to empirically identify how arguments for and against carbon offsetting influence public preferences for the inclusion of offsetting in national GHG mitigation policy. We find that the public's support for international offsetting increases and support for reductions at their source (i.e. within firms' own operations) diminishes when considerations of economic efficiency gains are at the forefront. Support for offsetting declines when individuals are confronted with arguments concerning its effectiveness and ethicality, which suggests that future policies will require clear standards of additionality in order to address these concerns. Moreover, we find that how carbon offsetting is framed matters even amongst climate skeptics and support could potentially be enhanced via improved communication on efficiency gains.     

提高高校校园网络视频新闻节目质量探析

随着高校校园网的建立,许多高校都开办了网络视频新闻节目,网络视频新闻以它独特的优势受到师生的关注,成为高校校园媒体的重要组成部分,为高校新闻宣传和思想政治教育发挥了重要作用。但目前视频新闻节目质量普遍不高,在队伍建设、管理机制、节目内容、节目形式等方面存在不足,必须采取措施加以解决。     

基于Net技术的评估网新闻管理系统的设计与实现

采用Visual Studio 2008和SQL Server 2000开发的高职校评估网站新闻管理系统,实现了对评估新闻的动态管理,充实了评估网站的功能,较好的满足了高职院校推进评估工作的迫切需要。文中对系统的功能模块、体系结构以及设计与实现的关键技术等进行了介绍。     

冷弯型钢剪力墙结构的非线性有限元简化分析

预制冷弯型钢框架在中、低层住宅及商业建筑中应用越来越广泛,主要通过由等间距螺栓连接且由面层包裹的结构板承载。利用框架特点,可通过厂家提供的负载表或试验数据设计构件。如果要获得结构的弹塑性性能,则需要进行有限元分析。由于需要大量单元来模拟构件和结构面层,此类结构的有限元分析耗时很长。介绍了一种通过有限元分析冷弯型钢结构的简化方法。以某1·2m宽、通过冷弯型钢螺栓连接和面层包裹的典型墙面为例,采用16结点壳单元进行模拟,并以刚度退化因子模拟剪力墙的非线性性能。与传统有限元法相比,新方法所需单元数更少。以某单面剪力墙为例进行分析,结果表明:新方法的精确度及效率更高。最后,采用新方法对某3层结构进行非线性分析。     

蒸压纤维水泥板覆面轻钢龙骨式复合墙体抗剪性能试验研究

为研究采用蒸压无石棉纤维素纤维水泥板(CCA板)覆面的轻钢龙骨式复合墙体的抗剪性能,进行了13片足尺墙体的水平单调加载和低周反复加载试验。试验结果表明,采用CCA板覆面轻钢龙骨式复合墙体的破坏主要表现为自攻螺钉连接处的CCA板拉裂或者螺钉拔出,最终CCA板失去传递剪力的能力而破坏,轻钢龙骨未发生明显破坏。基于试验结果,得到了各类CCA板覆面墙体的屈服荷载、最大荷载、破坏荷载以及位移延性系数等性能指标。最后,分析了CCA板厚度、密度以及加载方式对轻钢龙骨式复合墙体受剪性能的影响,并与OSB板、石膏板覆面墙体进行了比较。     

Participatory or deliberative democracy? Exploring the mediation effects of perceived online deliberation and online interactive activities on social outcomes

Using the structural equation modeling method (N = 811), this study explores the structural relationships among online news consumption, political participation and social trust, with a focus on the mediating effects of online users’ deliberative perceptions and news-related online interactive activities. The analysis confirms that users’ perceptions of online deliberation exert a significant mediating effect on users’ levels of news consumption, political participation, and social trust. Users’ interactive civic messaging behaviors, on the other hand, solely enhance participatory intentions. The findings also show that the consumption of political news and the consumption of entertainment news have different effects on users’ perceptions of online deliberation, social trust, and political participation. Specifically, while political news has a direct and relatively strong influence on participation, entertainment news has a limited and indirect effect on participation. Online interactive activities are negatively associated with users’ perceived competency for online deliberation. Further implications of the study are also discussed.     

AutoCAD二次开发在大比例尺地形图批量生产中的应用

目前商业制图软件无法满足对测绘专业成图标准的要求,以往作业需要人工逐项进行属性修改,耗时费力且易出错。笔者借助AutoCAD二次开发,实现地形图成果的自动归层和分幅图批量生产,并对软件进行人性化界面设计和软件包发布,在实际生产中达到保质降本增效的目的。     

北京日报报业集团新闻采编中心项目设计探讨

结合北京日报报业集团新闻采编中心所处地理位置及自身功能,针对该项目的设计难点,围绕净化与协调,极简与高效,人文化的公共空间三个设计原则进行了具体阐述,介绍了对该项目的整体设计构思,对类似项目设计具有一定指导意义。