首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
This paper explores the impact of communication media and the Internet on connectivity between people. Results from a series of social network studies of media use are used as background for exploration of these impacts. These studies explored the use of all available media among members of an academic research group and among distance learners. Asking about media use as well as about the strength of the tie between communicating pairs revealed that those more strongly tied used more media to communicate than weak ties, and that media use within groups conformed to a unidimensional scale, showing a configuration of different tiers of media use supporting social networks of different ties strengths. These results lead to a number of implications regarding media and Internet connectivity, including: how media use can be added to characteristics of social network ties; how introducing a medium can create latent tie connectivity among group members that provides the technical means for activating weak ties, and also how a change in a medium can disrupt existing weak tie networks; how the tiers of media use also suggest that certain media support different kinds of information flow; and the importance of organization-level decisions about what media to provide and promote. The paper concludes with a discussion of implications for Internet effects.  相似文献   

2.
This study shows several ways that formal graph theoretic statements map patterns of network ties into substantive hypotheses about social cohesion. If network cohesion is enhanced by multiple connections between members of a group, for example, then the higher the global minimum of the number of independent paths that connect every pair of nodes in the network, the higher the social cohesion. The cohesiveness of a group is also measured by the extent to which it is not disconnected by removal of 1, 2, 3,..., k actors. Menger's Theorem proves that these two measures are equivalent. Within this graph theoretic framework, we evaluate various concepts of cohesion and establish the validity of a pair of related measures: 1. Connectivity—the minimum number k of its actors whose removal would not allow the group to remain connected or would reduce the group to but a single member—measures the social cohesion of a group at a general level. 2. Conditional density measures cohesion on a finer scale as a proportion of ties beyond that required for connectivity k over the number of ties that would force it to k + 1.
Calibrated for successive values of k, these two measures combine into an aggregate measure of social cohesion, suitable for both small- and large-scale network studies. Using these measures to define the core of a new methodology of cohesive blocking, we offer hypotheses about the consequences of cohesive blocks for social groups and their members, and explore empirical examples that illustrate the significance, theoretical relevance, and predictiveness of cohesive blocking in a variety of substantively important applications in sociology.  相似文献   

3.
In order to detect changes in social connectivity, we examined evolutions in the personal network structure by analyzing over-time trends in the composition of the population’s core discussion networks on four cross-sectional, nationally representative surveys between 1997 and 2015, in the era of post-communism, in Hungary. There has been a very significant change; in fact, a reversal of trends regarding the composition of the core discussion networks (CDNs) concerning kin and non-kin ties over the past decades. Our data suggest that friendship ties gained more importance. There seems to be a generation-specific aspect of the change: young people include family ties less often than older people and this effect strengthens over time. Women still have a higher ratio of kin ties compared to men and this effect does not change significantly during the analyzed period.  相似文献   

4.
Social capital has become the preeminent concept for studying civic relationships, yet it will not help us assess their meanings, institution-like qualities, or potential for social capacity. Alexis de Tocqueville’s insights on these three features of civic relationships continue to be highly influential, and the popular social capital concept claims a strongly Tocquevillian heritage while systematically missing what a Tocquevillian imagination illuminates. Scenes from volunteer group settings in a midwestern US city show how a concept of group style apprehends the varying meanings, routines, and social capacities of civic ties. Group style also illuminates the process by which civic groups create “bridging” ties beyond the group. Without rejecting the social capital concept entirely, I highlight research questions and findings that social capital would ignore or misapprehend. A concluding discussion draws out implications for democratic theory, and sketches an agenda for future research on civic group style that makes good on Tocquevillian insights while moving beyond Tocqueville’s own limits.  相似文献   

5.
Abstract

In 2003 George W. Bush offered a black and white depiction of the detainees held within Guantánamo Bay. Having removed all their legal and constitutional protections and imposed an absolute executive authority, Bush baldly asserted that they were 'bad people'. Yet, ironically, by taking these measures, Bush also visited upon the US problems and threats that Barack Obama still struggles to resolve. Bush's solution created a new set of dilemmas, since the detainees, cast into the position of 'bare life', in Giorgio Agamben's phrase, stripped of their legal rights, were in a situation where they also collectively situated the Guantánamo Bay camps as a hub at the centre of a hybrid network — one arguably possessing both weak ties and 'small world' hub-centeredness. This hub has weak ties, in that the network has been randomized in the node's multinational assemblage of detainees, linking all over the world, so generating a network which has the potential for high connectivity, yet it is also a network that has the robust compactness of a small world network, in that it is defined around the GiTMO camps. This makes it a particularly potent source of networked resistance to the camps and of terrorist collaboration via a process of network densification.  相似文献   

6.
Cross-sectional studies of interlocking directorates cannot adequately address the question of whether the network is primarily an accumulation of planned liaisons between specific pairs of firms or whether it reflects a more diffuse collective interest of the capitalist class. By examining the outcomes when ties are broken, it is possible to discover if ties between specific firms are usually replaced, as would occur if planned liaisons dominated the network. Replacement patterns are examined for interlocks among all firms ever among the one hundred largest Canadian firms between 1946 and 1977. About 30 percent of the broken ties are replaced by ties between the same pair of firms. Ties involving an executive of one of the firms (“insider ties”) are more likely to be replaced as are ties between firms with two or more interlocks. The findings suggest that interlocks serve both as vehicles of intercorporate control and liaison and as reflections of the class character of the group from which the directors of large firms are recruited.  相似文献   

7.
Given the significant role attributed to community organizations by many social capital scholars, it is appropriate to investigate the dynamics of that process. In particular, Woolcock and Narayan (World Bank Res. Obs. 15(2): 225–249, 2000) have suggested that bridging and bonding are two different types of connections, whereby bridging is associated with loose ties across communities and bonding is associated with strong ties within a limited group. This qualitative study explores the loose and strong ties of 39 participants connected through community organizations in rural and urban New South Wales. The results suggest that loose and strong ties are not synonymous with bridging and bonding. In general loose and strong ties differ in degree rather than in kind and people prefer to bridge through their strong ties. The interesting exceptions were ties to professionals, which were highly trusted but defined as loose ties. It is suggested that a model for a high social capital society might be a chain of well-bonded groups each with strong links to some other groups.  相似文献   

8.
Personal relationships are embedded in both spatial and relational contexts. Using data on 60 intentional communities from the Urban Communes Data Set, we examine how such embedding is related to the persistence and re-formation of close personal ties over a thirteen year period, beginning from when most members had been out of their group environments more than a decade. We find that local network structure—the pattern of dyads immediately surrounding any dyad—is extremely weighty in which ties persist, which lapse, and which are re-initiated, but that the precise ways in which local structure affects contact are bound up with the distance between dyad members. We also find asymmetries in these processes that other studies have been unable to uncover—that processes that lead ties to be dropped are not the same as those that lead them to be renewed; that increases in local embeddedness are not opposite of decreases; that change in contact is not the same as change in friendship. Finally, there is evidence of hierarchical effects influencing the retention of friendships more than twenty-five years after most respondents left their groups.  相似文献   

9.
Criminal networks are thought to be biased toward decentralization and security rather than integration and efficiency. This article examines this tradeoff in a large-scale national criminal network spanning more than 700 members of 24 distinct American mafia families operating in the mid-20th century. Producing a novel network image of the American mafia as a set of highly differentiated yet intertwined islands of criminal activity, the analysis uncovers a small-world structure that allowed both for strong intragroup closure and high intergroup connectivity. This balance reflected a division of network labor in which integrative bridging connections were disproportionately concentrated among a small number of criminals. Furthermore, the criminals who held such bridging ties tended to be either low- or high-status—but not of middling status—within their respective organizations.  相似文献   

10.
While resource mobilization theory has advanced our understanding of social movements, two questions require further explanation: (1) How do people come to define their situation as unjust and subject to change through collective action? (2) How is such an “oppositional consciousness” empirically studied? From field research among people with disabilities, I suggest that oppositional consciousness is manifested through the collective actions, symbols, and cultural artifacts constructed by a group. I propose that strong interpersonal ties among group members may not be necessary for an oppositional consciousness to develop. To understand how a dominated group develops an oppositional consciousness, rather than analyzing the strength of its members' social ties, we must examine the context and the nature of these ties: (1) the institutions in which their social interactions typically occur; (2) the socialization process they experience within these institutions; and (3) members' contact with the oppositional ideologies of other dominated groups.  相似文献   

11.
We consider data with multiple observations or reports on a network in the case when these networks themselves are connected through some form of network ties. We could take the example of a cognitive social structure where there is another type of tie connecting the actors that provide the reports; or the study of interpersonal spillover effects from one cultural domain to another facilitated by the social ties. Another example is when the individual semantic structures are represented as semantic networks of a group of actors and connected through these actors’ social ties to constitute knowledge of a social group. How to jointly represent the two types of networks is not trivial as the layers and not the nodes of the layers of the reported networks are coupled through a network on the reports. We propose to transform the different multiple networks using line graphs, where actors are affiliated with ties represented as nodes, and represent the totality of the different types of ties as a multilevel network. This affords studying the associations between the social network and the reports as well as the alignment of the reports to a criterion graph. We illustrate how the procedure can be applied to studying the social construction of knowledge in local flood management groups. Here we use multilevel exponential random graph models but the representation also lends itself to stochastic actor-oriented models, multilevel blockmodels, and any model capable of handling multilevel networks.  相似文献   

12.
The work–family literature emphasizes how work intrudes into family life, and some scholars suggest that social ties based in the workplace may be replacing ties to family or neighbors. Using data from the Ecology of Careers Panel Study, we describe the prevalence of strong ties with family, coworkers, and neighbors in a dual‐earner, middle‐class sample. We also examine which respondents are more likely to have strong ties in the workplace. We find that most respondents do not have any strong ties with coworkers; however, coworker ties are much more common than ties to neighbors. Additionally, there are gender differences in network ties and these differences may have important consequences for social support.  相似文献   

13.
Logit Models for Affiliation Networks   总被引:1,自引:0,他引:1  
Once confined to networks in which dyads could be reasonably assumed to be independent, the statistical analysis of network data has blossomed in recent years. New modeling and estimation strategies have made it possible to propose and evaluate very complex structures of dependency between and among ties in social networks. These advances have focused exclusively on one-mode networks—that is, networks of direct ties between actors. We generalize these models to affiliation networks, networks in which actors are tied to each other only indirectly through belonging to some group or event. We formulate models that allow us to study the (log) odds of an actor's belonging to an event (or an event including an actor) as a function of properties of the two-mode network of actors' memberships in events. We also provide illustrative analysis of some classic data sets on affiliation networks.  相似文献   

14.
The differences between direct ties (i.e., ties between a respondent and their nominees) and ties between nominees (indirect) are key to understanding network structure, yet remain understudied. Within a sample of 175 young men who have sex with men, we explored the corroboration of sex and drug ties, and factors associated with corroboration. The majority of instances in which there was no corroboration for either sex or drug ties was due to one individual not appearing in another respondent’s network. When an individual did appear in another respondent’s network, direct sex and drug ties were corroborated in most cases. We also found that more indirect sex ties were corroborated than direct sex ties (95.7% vs. 88.9%), but the reverse was true for indirect versus direct drug ties (73.1% vs. 84.1%). Strength of relationship and frequency of communication were both associated with confirmed direct ties, but not with indirect ties. Based on these findings, we recommend that direct and indirect ties be treated differently in network analyses.  相似文献   

15.
Social network analysts have often collected data on negative relations such as dislike, avoidance, and conflict. Most often, the ties are analyzed in such a way that the fact that they are negative is of no consequence. For example, they have often been used in blockmodeling analyses where many different kinds of ties are used together and all ties are treated the same, regardless of meaning. However, sometimes we may wish to apply other network analysis concepts, such as centrality or cohesive subgroups. The question arises whether all extant techniques are applicable to negative tie data. In this paper, we consider in a systematic way which standard techniques are applicable to negative ties and what changes in interpretation have to be made because of the nature of the ties. We also introduce some new techniques specifically designed for negative ties. Finally we show how one of these techniques for centrality can be extended to networks with both positive and negative ties to give a new centrality measure (PN centrality) that is applicable to directed valued data with both positive and negative ties.  相似文献   

16.
This paper describes the utilisation of support networks for the organisation of informal childcare by working Polish migrant mothers in Dublin. Grounded in a support network perspective the study employs a mixed method approach to elucidate how the mothers use local and transnational relations in their child-minding strategies, but also highlights the obstacles posed by the distant character of the latter ties. In line with previous research on support networks, we find a strong reliance on strong ties in providing instrumental and emotional support (e.g., Wellman and Wortley, 1990) but also that ‘distance’ matters (e.g., Mok et al., 2010) and shapes the network mobilisation strategies of the working mothers. Locally based weak ties, based on various forms of reciprocity, are supplemental in providing ad-hoc crisis support when transnational ties cannot be mobilized. Nonetheless, transnational ties are shown to be crucial in the childcare provision, in particular for longer spells of regular childcare.  相似文献   

17.
Research on negative ties has focused primarily on the harm they do. In this paper, we show that negative ties can also have beneficial effects. We argue that, like positive ties, negative ties can link actors together in the minds of observers. As a result, we theorize that negative ties with high-status actors can benefit a focal actor, whereas negative ties with low-status actors can harm the focal actor. This prismatic effect depends on the existing status of the focal actor: a focal actor of low status is likely to benefit far more from negative ties with high-status actors and suffer more from negative ties with low-status actors than will an actor of high-status. To test our ideas, we analyze the phenomenon of "diss songs" in hip-hop music. A diss song is a song in which a rapper makes derogatory comments about another rapper, constituting a negative tie. We analyze the effects of negative ties among 53 rappers over 20 points in time on audience reaction as measured by record sales. We find that negative ties with high-status actors enhance future sales for low-status actors. However, negative ties with lower-status actors have no effect on the future sales of both low- and high-status actors. Just as some researchers have reported both positive and negative consequences of social capital, our study demonstrates that negative ties can also have both positive and negative outcomes.  相似文献   

18.
《Social Networks》1988,10(4):343-357
The concept of a social group is examined from a social interaction point of view. A definition of social group is proposed which can be operationalized. This definition is based on the idea that social groups are characterized by regions of dense interactions ties, and by internal structure of a hierarchiral nature. This definition gives rise to an algorithm which is then tested on Sampson's monastery data. The results are compared with Sampson's ethnographic account.  相似文献   

19.
Debate on the social role of the Internet has centred on whether its use will tend to isolate or connect individuals, undermining or reinforcing social ties. This study moves away from this focus on more or less connectivity to explore the degree to which people use the Internet to make new friends and, thereby, reconfigure their social networks. The analysis identifies those who create new ties through the Internet and investigates under what conditions these online ties migrate to face to face settings. The analysis is based on data from the 2005 Oxford Internet Survey (OxIS), a national probability sample survey of individuals aged 14 and over in Britain. The findings indicate that about 20 per cent of Internet users have met new friends online, and about half of these individuals go on to meet one or more of these virtual friends in person. Sociodemographic characteristics, such as being single, shape patterns of Internet use, and are related to the greater propensity of some individuals to make online social relationships. However, experience with the Internet and the ways people choose to use the Internet, such as for chatting or communicating more generally, are most directly associated with who makes new connections over the Internet and who does not. These findings suggest that the Internet plays an important role in reconfiguring the social networks of many users. Also, multivariate analyses indicate that the dynamics of online friendships are driven more by the idiosyncratic digital choices made by users of the Internet than by any mechanistic social or technological determinism.  相似文献   

20.
We examine the affective content of ties and explore whether negative affective tie content is systematically advantaged or disadvantaged when recalling the social network as compared to positive affective tie content. We test this in three workgroups from two organizations and analyze differences in perceptual accuracy comparing negative and positive affective tie perception. We theorize that ego will be more accurate for others’ positive than negative ties due to generalized positivity bias, or the Pollyanna principle. We also theorize that ego will be more accurate for their own negative ties due to negative asymmetry perspective, as ego will attend more to those ties that pose a personal threat. Findings suggest that observers were more accurate overall about their own and others’ positive compared to negative affective ties. We conclude that the Pollyanna principle is an important factor in explaining perceptions in naturalistic cognitive networks. Supplementary analysis showed that negative ties were more likely to be missed and imagined and having a valenced tie toward another person influences perceptions of that persons’ network ties. Finally, we find that balanced and imbalanced triads were also important factors of relative accuracy. The study’s contribution, limitations, and future research are also discussed.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号