新兴媒体条件下的高校群体突发事件舆论引导机制构建研究

在高校群体突发事件中,以网络、手机和微博等为代表的新兴媒体对舆情发展具有双重作用,我们要充分认识构建高校群体性突发事件舆论引导机制的客观必然性,认真分析新兴媒体视角下的高校群体性事件的特点,积极探索群体突发事件的新闻发布机制、论坛交流机制、队伍建设机制、信息收集机制、预警防范机制、事件处置机制,努力构建高校群体突发事件...     

亲子幼教网创业生态系统动态演化的案例研究——机会识别与利用适配视角

2015年,随着中央“大众创业万众创新”号召的提出,高科技创业再度成为国内各界所共同关注的重要课题。创业的实质是识别与利用创业机会,其成功与否将取决于团队、政府、高校和投资机构等内外部组织间紧密合作的生态系统。以典型性高科技创业的亲子幼教网创始人3次创业过程为案例研究对象,基于机会识别和利用的适配性视角,深入探讨亲子幼教网创业生态系统动态演化的过程机理。通过对案例的研究发现,亲子幼教网创业者3次创业生态系统经历了资本主导型创业、市场主导型创业和创业者主导型创业3个阶段;每个阶段创业者对创业机会的识别与利用方式具有不同的特征;以典型性高科技创业的亲子幼教网创业生态系统中,创业机会识别与利用的不断适配推动创业生态系统的动态演化,而创业者的机会观是推动创业生态系统发展的关键因素。     

交叉持股行为的复杂性研究

为分析交叉持股行为对股市波动的影响,引入复杂网络进行研究,以我国沪深两市上市公司间的交叉持股关系构建了两类网络。经理论分析和数值模拟计算表明:一类网络是基于选择和利己连接规则下的无标度网络;另一类网络可依据具有交叉持股关系的公司股票间价格相关系数的大小来调节规模,当价格相关系数处于某特定值时,此类网络即呈现无标度特性。研究表明:在交叉持股网络中,度值大的股票会对整个网络产生很大的影响,并进而对整个股市造成更大的影响。     

昆明市公路客运枢纽换乘网络分析与评价

为了合理评估昆明市公路客运枢纽换乘网络的运营效率,在考虑城市综合客运枢纽功能及乘客换乘行为特征的基础上,系统分析了昆明公路客运枢纽换乘网络的要素与形态。通过乘客问卷调查采集实际数据,综合利用层次分析法与模糊综合评价法,建立城市综合客运枢纽换乘网络的评价指标体系与评价模型,并对昆明市五大客运站运营效率进行评估,结果表明五大客运枢纽换乘效率均处于＂一般＂水平,在此基础上提出相应的换乘网络优化对策。     

Delay causes analysis in complex construction projects: a Semantic Network Analysis approach

Delays are among the most crucial adversaries to the success and performance of construction projects, making delay analysis and management a critical task for project managers. This task will be highly complicated in large-scale projects such as construction, which usually consist of a complex network of heterogeneous entities in continuous interaction. Traditional approaches and methods for the analysis of delays and their causes have been criticised for their ability to handle complex projects, and for considering the interrelationships between delay causes. Addressing this gap, this research introduces an alternative approach for delay causes analysis by adopting Semantic Network Analysis (SNA) method. The paper reports the results from an investigation of delays in construction projects in the Oil-Gas-Petrochemical sector using SNA. The method’s capacity to identify and rank delay causes, which can assist managers in selecting appropriate measures for eliminating them, are empirically examined and discussed. The paper argues that SNA leads to a more comprehensive understanding of the main causes of delay in large and complex projects, allowing a better identification and mapping of the interrelationships between these discrete factors.     

How leader role identity influences the process of leader emergence: A social network analysis

Contemporary theories on leadership development emphasize the importance of having a leader identity in building leadership skills and functioning effectively as leaders. We build on this approach by unpacking the role leader identity plays in the leader emergence process. Taking the perspective that leadership is a dynamic social process between group members, we propose a social network-based process model whereby leader role identity predicts network centrality (i.e., betweenness and indegree), which then contributes to leader emergence. We test our model using a sample of 88 cadets participating in a leadership development training course. In support of our model, cadets who possess a stronger leader role identity at the beginning of the course were more likely to emerge as leaders. However this relationship was only mediated by one form of network centrality, indegree centrality, reflecting one's ability to build relationships within one's group. Implications for research and practice are discussed.     

Social Network Challenges to Reducing Consumption: The Problem of Gift Giving

Social networks are typically associated with recruitment tactics. In this article, I offer an additional perspective on social networks as a constraint to social change and an under‐recognized challenge to reducing consumption. I draw on 45 interviews with: voluntary simplifiers, religious environmentalists, and green home owners. Informants, failing to withdraw from gift‐giving networks, instead (1) negotiate a reduction in gift giving, (2) green gift giving, and (3) attempt to transform gift giving into a tactic for lifestyle change. Rather than viewing social networks as channels for cultural cohesion, I argue that we need to better conceptualize the way culture and networks are co‐constituted by tactics of influence within areas of contention.     

Tweeting about emergency: A semantic network analysis of government organizations’ social media messaging during Hurricane Harvey

While social media like Twitter have been increasingly adopted by public-sector organizations, it remains less explored as to how government and emergency management (EM) organizations use these platforms to communicate with the public in response to emerging natural disasters. Extending the Situational Crisis Communication Theory (SCCT) to the realm of social media, this study examines the emerging semantic networks from 67 government and EM organizations’ official tweets during Hurricane Harvey over a three-week period. It identifies how multiple crisis response strategies—including instructing information, adjusting information, and bolstering—are constituted of different issues, actions, and organizational actors before, during, and immediately after the disaster event. Results suggest that government agencies use the strategy of instructing information predominantly before and during the disaster, whereas adjusting information and bolstering strategies are utilized more during post-disaster recovery. The study offers theoretical and practical implications of using a semantic network approach to studying organizational crisis responses.     

Secondhand social capital: Boundary spanning,secondhand closure,and individual performance

We move beyond the performance returns of individuals’ direct network connections to study the effects of “secondhand” social capital, i.e., from the networks of one’s contacts. We propose that certain colleagues may be more valuable to one’s job performance than others when their spillovers of novel information combine with spillovers of the cooperation needed to obtain that novelty. In a study of 1273 research and development employees across 16 business units, we find that the most benefit to one’s own performance comes from having ties that span business units and that also include secondhand closure (i.e., where one’s contacts are each embedded in a constrained, dense network). Bridging the organizational boundary provides the novelty; and secondhand closure provides the cooperation. Further, by examining who in the network is constraining these contacts, we are able to trace their cooperative motivation both to reputational and organizational identity concerns, which each create a spillover of cooperation toward the focal individual, who reaps the returns.     

Mobility types,transnational ties and personal networks in four highly skilled immigrant communities in Seville (Spain)

In this study, we explore how different mobility patterns influence the composition and structure of the transnational social support networks and how personal networks allow us to elicit insightful data of mobile individuals. Ninety-five mobile individuals were selected from four distinct communities based in Seville (Spain), namely: Erasmus students, Flamenco artists, musicians from the symphonic orchestra and partners of European Commission researchers. Data were collected through an electronic survey sent by email with multiple name generators and a structured face-to-face interview utilizing a network visualization tool, VennMaker. Two distinct methods, namely qualitative case studies and cluster analysis were used to characterize mobility types. Findings reveal a heterogeneous foreign population, in which different forms of mobility are reflected in the personal networks of mobile individuals. Respondents who were settled in the city were more likely to have networks in which social support was mainly derived by hosts and people in the host location and with whom they communicated predominantly through face-to-face communication. Those who were in the host location for a study exchange, knowing that return to the county of origin is imminent were more likely to have networks linked to the home location. They relied heavily on strong transnational ties in the home country using social media to sustain their relationship. Respondents with an itinerant mobility profile, also had networks dominated by strong transnational ties, however, such ties had a higher degree of geographical spread due to previous international mobility. Participants who had a high number of hosts in the network but low connection between the ties were more likely to be linked to a specific subculture in the host society. The integration in the host location follows a different pattern to other settled individuals, mainly because their connection in the city tends to be community specific.