The Swiss StudentLife Study: Investigating the emergence of an undergraduate community through dynamic,multidimensional social network data

The Swiss StudentLife Study (SSL Study) is a longitudinal social network data collection conducted in three undergraduate student cohorts (N₁ = 226, N₂ = 261, N₃ = 660) in 2016−2019. The main goal of the study was to understand the emergence of informal student communities and their effects on different individual outcomes, such as well-being, motivation, and academic success. To this end, multiple dimensions of social ties were assessed, combining computer-based surveys, social sensors, social media data, and field experiments. The dynamics of these social networks were measured on various time scales. In this paper, we present the design and data collection strategy of the SSL Study. We discuss practical challenges and solutions related to the data collection in four areas that were key to the success of our project: study design, research ethics, communication, and population definition.     

A proposed multistage evaluation approach for Higher Education Institutions based on network Data envelopment analysis: A Brazilian experience

The evaluation of Higher Education Institutions (HEIs) is a challenging task, due to the complexity inherent in the context in which they are inserted, the different institutional profiles, the variety of resources used and the results offered in the performance of their mission. In this way, the present study proposes an evaluative approach that aims to measure efficiency taking into account the diverse activities characteristic of university institutions. To this end, a data envelopment analysis (DEA) approach, known as Network DEA, is used, which encompasses the different processes and subprocesses that take place within these institutions. In all, the evaluation considers eleven variables organized in three distinct stages, which reflect the performance of the HEIs in different perspectives: financial, undergraduate level and graduate level (student training and scientific production and innovation). Finally, the model was applied at 45 Brazilian federal universities. This case study allows a comprehensive efficiency analysis to be carried out for the set of institutions considered, from each perspective taken into account in the approach.     

现代网络文化中大学生爱国主义教育研究

网络文化也存在于精神、物质和制度三个层面,大学网络文化的精神文化、制度文化和物质文化j者相互关联、相辅相成。现代网络文化中大学爱国主义教育面临机遇与挑战。传统爱国主义教育存在主体性地位缺失、僵化的教育模式广受质疑以及传统的认识误区等主要问题,在网络文化语境中爱国主义教育又存在国家主权意识观念淡化、中华民族认同感弱化、社会主义意识模糊和文化大国心态缺失等主要问题。现代网络文化中大学生爱国主义教育的实现路径：在大学网络精神文化视角下,构建以国家主权意识与安全教育,落实优秀民族传统历史文化教育,整合社会主义核心价值观教育,增强社会主义公民道德教育等新型爱国主义教育内容;在大学网络制度文化视角下,建立健全大学规范的网络管理制度,建立网络科学管理加强对网络信息安全的监控,组织人才加强网络文化宣传和舆论引导;在大学网络物质文化视角下,利用现代网络技术强化校园网络平台建设,加强爱国主义教育文化主题网站建设,打造一支过硬的网络爱国主义教育工作者队伍。     

青少年网络帮派犯罪的现状检视及其对策思考

目前,利用网络结社和勾联所结成的"网络帮派"正在成为引发青少年犯罪的新途径。其中,网络帮派有其明显的群体特征:等级性和管理的完整性、网络纠集的快捷性和群体犯罪的疯狂性。其中网络公会成为青少年网络帮派的新形式,极易培养青少年的帮派意识,并诱发青少年结帮犯罪。网络帮派犯罪不仅因其便捷和突发性而使犯罪防治更加困难,而且它毒害了青少年的心理,损害了青少年的健康成长。因此,应针对青少年网络帮派犯罪形成的青少年自身、社会和法律原因,加强学校和家庭对青少年的教育和引导,加强网络监管,完善立法和加强司法干预等。     

论网络语言对文化传播交际的影响

随着互联网信息技术的产生和发展,网络已经成为信息传播、人们交流的重要手段之一。作为信息的重要载体、交流的重要工具——网络语言也在影响着人们的社会生活。本文通过对近几年的网络语言的词汇、语法、语义的研究,分析网络语言在文化交流传播过程中的特点,概括总结网络语言对文化传播交际的影响,从而可以充分利用网络语言的优势引导文化传播交际的良性发展。     

双边市场视角下大型零售商行为研究述评

经过以连锁经营和超级市场为标志的"零售革命",零售市场从原来的单边市场转变为双边市场,大型零售商也由单纯的销售终端转变为居于供应商和消费者之间的交易平台。作为平台企业,大型零售商采取非对称定价策略,向供应商收取通道费,对消费者则不收取除商品价格以外的额外费用,这一行为并不违背市场公平的原则。大型零售商按照平台为供应商创造的价值而收取通道费并没有损害供应商的利益,反过来还为供应商获得更大的利益创造了条件。大型零售商的价格策略源自于双边市场的交叉网络外部性,并且在外部性内化的过程中依然要受到市场约束,因而不同于一般的垄断,不属于政府规制的对象。     

Reconceptualizing and expanding the positive feedback network effects model: A case study

During the 1980s, economists developed the concept of positive network effects and switching costs as the key dynamics of de facto standards competition. They concluded that a positive feedback loop usually “tips” a market to the standard with the most users and complementary assets. While recent scholars have acknowledged that not all markets tip, and suggested some possible limitations on this phenomena, these limitations have not been integrated systematically into a model for competition in these industries. Using examples drawn from the standards contests of the past 20 years, this case study develops an integrated model for competition in these industries.     

Traffic regulation with single- and dual-homed ISPs under a percentile-based pricing policy

We investigate how a customer (an enterprise or a large organization), when facing a percentile-based pricing policy, can optimally balance the Internet access cost and the traffic buffering delay penalty by traffic regulation. The problem is referred to as the Optimal Traffic Regulation (OTR) problem. Solutions to various cases of the OTR problem are provided. For a customer with a single-homed ISP, we present optimal solutions to the OTR problem based on dynamic programming for the offline case with a known traffic demand pattern. A real-time traffic scheduling algorithm is proposed to deal with the online case where the traffic demands are different from a given demand pattern. We further extend the dynamic programming model to the case of dual-homed ISPs. Experimental results on the data from an Internet trace confirm the effectiveness of our solutions. Part of the results has been presented in the First International Conference on Scalable Information Systems.     

Mergers and acquisitions research — A bibliometric analysis

Mergers and acquisitions (M&A) remain a popular vehicle for organizational development to ensure future competitiveness. However, despite the extensive body of research in recent decades, significant gaps can be observed between the understanding of the phenomenon M&A in the literature and the importance of M&A activities in practice. Heterogeneous perspectives from different schools of thought, contradictory findings and controversies, and changing economic environments make M&A research a complex endeavor and highlight the need for integrative approaches and holistic perspectives. This paper takes a holistic view of M&A research to map interrelationships among key documents, authors, institutions, and countries; trace the evolution of M&A research over time; and suggest avenues for future research to expand the boundaries of M&A scholarship. For this purpose, a sample of 580 articles from 9 leading management science journals was examined bibliometrically, including 42,630 citations and 18,734 unique references for the years 1963–2019.     

How stable is the core discussion network?

Researchers have paid increasing attention to the core discussion network, the set of people we turn to when discussing important matters. Because the core discussion network is theorized to be composed of people's closest ties, not fleeting acquaintances, it is expected to be largely stable, evolving slowly over the span of people's lives. However, recent studies have shown that networks are strongly affected by the contexts in which people interact with others, and as people experience life course transitions, they also often enter new contexts – school, college, work, marriage, and retirement. We ask whether, as actors enter new social contexts, the core discussion network remains stable or changes rapidly. Based on original, longitudinal, qualitative and quantitative data on the experience of first-year graduate students in three academic departments in a large university, we examine the stability of the core discussion network over the first 6 and 12 months in this new context. We test four competing hypotheses that focus on strength of ties, new opportunities, obligations, and routine activity and predict, respectively, stasis, expansion, shedding, and substitution. We find that the core discussion network changes remarkably quickly, with little or no lag, and that it appears to do so because both the obligations that people face and the routine activities they engage in are transformed by new institutional environments. Findings suggest that core discussion network may be less a “core” network than a highly contextual support network in which people are added and dropped as actors shift from environment to environment.