Volume 5, Issue 1, 1982

Issue 1 - Complete Document, 1-65
Network Notebook, 1-5
Meeting Calendar, 6-10
Interfaces, 11-20
White, Harrison C.
A High-Density Clustering Approach to Exploring the Structure of Social Networks, 21-26
Lattin, James, Wong, Anthony
In this paper, we present a technique originally developed for decomposing complex software design problems, and suggest its usefulness for exploring the structure of large, non-directed social networks. The technique, based on a high-density clustering model defined on a graph, is quite efficient on very large, relatively sparse networks and provides a convenient, two-dimensional representation of the global network structure. In particular, we demonstrate the usefulness of the high-density clustering technique on the network defined by the interlocking directors of the 200 largest industrial corporations of the 1970 Fortune 800. The technique enables us to examine the regions of "high-density interlocking" in this corporate subnetwork : regions where any group of firms is quite heavily interlock, and where any one firm in the group is not highly linked outside the group. These and other preliminary results indicate that the high-density clustering technique is conceptually appealing and requires much less time and computational expense than other exploratory methods employed.
Special Journal Issues, 27-31
Thesis Summaries, 32-33
Abstracts, 34-55
Computer Programmes, 56
New Books, 57-65

Volume 5, Issue 2, 1982

Network Notebook & Metings Calendar, 1-3
Alienation Reconsidered: The Strength of Weak Ties, 4-16
Granovetter, Mark
Most theorists have associated weak ties between individuals with alienation and social fragmentation, often assuming that weak ties became important only with modernization. Here, it is asserted that weak ties are indispensable for both individual fulfillment and for social cohesion. The basic postulates follow from. the principle that people tied weakly to each other move in different circles; thus the weak tie serves to connect those different circles. Several empirical studies of social networks are cited to establish this point.

Through weak ties, the individual has access to information and opportunity beyond that which his immediate circle of strong ties could afford him. This is illustrated with findings from a study of how higher-level personnel find jobs. In the community, it is suggested that where community organization fails it may be due less to "cultural" inability than to lack of weak ties connecting strongly cohesive subsets of people . From analysis of several community studies the question is taken up of what structures in a community facilitate the maintenance of weak ties. It is shown from these studies that where weak ties cannot flourish, individuals are forced to sustain all strong ties or none at all--and that both situations are experienced as unpleasant.

This issue is then raised of whether the importance of weak ties is uniquely modern. Evidence against this assumption is drawn from anthropological analyses of exogamy, ceremonial trading rings and joking relationships, and also from the medieval role of court jesters.

It is concluded that "alienation" can be seen in proper perspective only via a "comparative phenomenology" of different cultures, based on a theory of social structure which effectively links micro and macro levels of society. The analysis of weak ties is proposed as one element in this yet-to-be-constructed theory.
The Semantic Connection, 17-20
Special Journal Issues, 21-26
Thesis Summaries, 27-28
Abstracts, 35-54
Computer News, 55-59

Volume 5, Issue 3, 1982

Network Notebook, 3-6
Meeting Calendar, 7-11
Special Journal issues, 12
Abstracts, 13-34
New Books, 35-43
Thesis Summaries, 44-47
Computer Programmes, 48-56
Index to Volume V, 57-60

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