Setting socially mediated engagement parameters: A topic modeling and text analytic approach to examining polarized discourses on Gillette’s campaign

Opinions on social and political issues can be easily polarized in socially mediated contexts. Using an inductive topic modeling and text analytical approach, the study analyzes more than 100,000 original tweets on polarized discussions on Gillette’s controversial campaign addressing toxic masculinity. Results suggest that influencers serve as ideological hyper-prototypes that attract significant attention equally from supporters and detractors, while hashtags and users’ reference of current events span the conversations across multiple contexts. Study results also indicate that horizontal information cascades from external ideologically centered sources that serve users’ identity and ideological signaling are a potential contributor of discourse polarization. Based on the study results, an identity- and representation-based approach to understanding socially mediated discourses is proposed, and four parameters of socially mediated engagement identified to further theorize engagement for public relations research in digital contexts.     

动词复制句中的附加语控制

动词复制句（Verb－Copying Construction，VCC）是一种在汉语口语中经常使用的结构，用符号可以简单地表示为S＋VP1＋VP2，动词V2是动词V1的拷贝。这种结构本身具有独特的句法语义特征，也具有不同的句法变体。在其进行句法运算时，两个动词性结构首先独立运算，VP1作为附加语，VP2作为主句成分进入句法推导。通过附加语侧向移位、附加合并以及主题化特征核查等句法操作形成语言表达式。其句法变体的不同构型是因为不同的控制类型造成的。     

Examining multiplicity and dynamics of publics’ crisis narratives with large-scale Twitter data

The new reality of networked publics on social media calls for crisis communication practitioners and researchers to understand the narratives generated by publics on social media during organizational crises. As social media publics possess diverse, unique characteristics and communicative needs during a crisis, they form interpretative communities and co-create various symbolic interpretations of the crisis. Extending the public-centric and narrative perspective to the context of social media crises, we examined what crisis narratives were constructed by social media publics (i.e., multiplicity) and how these narratives changed by crisis stages (i.e., dynamics). Using topic modelling based on large-scale Twitter data of the Chipotle E. coli crisis (N?=?40,610), we identified ten narratives subsumed under two themes (i.e., sharing-based and conversation-based) based on publics’ social constructions of their perceived risks and crisis experience. On the one hand, sharing-based narratives, heavily impacted by publics’ shared media coverage, reflected media crisis narratives and salient risk perceptions aligning with the news agenda. On the other hand, conversation-based narratives, fueled by publics’ opinion expression and emotional venting, demonstrated publics’ interpretations of their experience with the organization in the crisis with less salient but more diversified risk perceptions. Crisis managers are recommended to produce and deliver compelling narratives resonating with different groups of social media publics during crises.     

得失与启示：我国统计学博士学位论文选题统计分析

 统计学博士是统计科研的中坚力量之一，其博士论文在一定程度上反映了当时我国统计学科研的热点和前沿，代表着我国统计教育的先进水平。本文通过对1987-2009年509篇统计学博士学位论文的选题及其研究内容进行统计，分析其变动规律和特点，总结选题的得失与启示，为今后科学选题以及进一步深入开展统计学术研究提供参考依据。     

基于LDA模型的中文微博热点话题发现

针对微博文本数量增加速度快、信息量繁杂等问题,将LDA模型应用到热点话题的挖掘中,构建出微博热点话题的识别过程。首先应用LDA模型对微博语料库进行主题建模,采用困惑度方法确定最佳主题个数．通过Gibbs抽样算法实现参数推理,获得语料库的主题一词汇概率分布和文本一主题概率分布,在此基础上计算并识别出微博中的热点话题、热点词汇和热点话题微博。实验结果显示该模型与人工挑选的结果基本一致．表明该模型具有较好的热点识别效果。     

Leadership in the digital era: A review of who,what, when,where, and why

Leadership as a social influence process has always involved a complex set of phenomena that demands an interdisciplinary lens. Leadership scholarship has now entered into a digital era. In a digital era, the overall phenomenon is changing, as are the tools through which we study it, demanding a new “lens” through which we view leadership. Yet, this raises the question, to what extent is leadership different in a digital era? In acknowledgement of this trend, a special issue was commissioned at The Leadership Quarterly that sought to stimulate the imagination of leadership scholars and practitioners. In the current work, we begin with a brief review of who, what, when, where and why of digital leadership. We cover leadership in informal contexts (e.g., social media), generalization from face-to-face to virtual contexts, computational modeling, the leveraging of technology (e.g., machine learning; Big Data), as well methodological how-to guides. We then plot a path forward for leadership scholars in the dawn of the digital era.     

集体记忆：主题拓展与研究展望

集体记忆是一个重要的社会课题,已经有学者在关注和研究它。在未来的集体记忆研究中需要重视主题领域的拓展,应该在宏观层面上重视社会变迁对不同群体集体记忆现象的影响关系,尤其是重视国际化的政治经济联盟、民族争斗、国内文化变迁导致的新群体和边缘群体的集体记忆特点;在微观层次上要超越以往研究的限制和藩篱,在研究主题、视角、方法以及理论建构方面取得更大的突破,促进集体记忆研究的完善和体系化。     

学术论文的选题与行文规范

在写论文之前,我们首先要思考写什么,也就是论文的选题,这是一项必经的基础环节。行文规范对论文写作进行约束,同时,对研究者在论文写作时进行指导、监督,也是维护学术风气的重要手段。本文对学术论文的选题和行文规范进行了精辟的阐释和分析,以期对论文写作的初学者提供借鉴和帮助。     

汉译英中主语与主题的转换

英汉两种语言属于不同类型的语言。英语是主语突显的语言,而汉语则是主题突显的语言。根据两种语言的不同,在汉英翻译时,可以将汉语的主题句直接转换成正常的英语主谓(宾)结构。但在多数情况下,需要将汉语主题句局部甚至全部改变才能完整精确地译出原句要表达的意思,同时又符合英语语言的表达习惯。根据这一指导原则,总结出翻译汉语主题句的三种基本方法,即对应法、增译法和转换法.     

如何指导毕业班学生撰写毕业论文

本文简介了毕业论文撰写的基本过程、论文的基本格式和主要内容。