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| Preface | |
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| Introduction | |
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| Getting Connected | |
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| Networks as Information Maps | |
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| Leaders and Followers | |
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| Networks as Conduits | |
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| The Point of View | |
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| Basic Network Concepts, Part I: Individual Members of Networks | |
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| Introduction | |
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| What Is a Network? | |
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| Sociological Questions about Relationships | |
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| Connections | |
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| Propinquity | |
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| Homophily | |
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| Individual-Level Homophily | |
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| Homophily and Collectivities | |
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| Dyads and Mutuality | |
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| Balance and Triads | |
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| Where We Are Now | |
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| Basic Network Concepts, Part II: Whole Social Networks | |
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| Distributions | |
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| Dyads and Triads | |
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| Density | |
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| Structural Holes | |
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| Weak Ties | |
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| "Popularity" or Centrality | |
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| Distance | |
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| Size of the Interpersonal Environment | |
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| The "Small World" | |
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| Multiplexity | |
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| Roles and Positions | |
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| Named Positions and Relationships | |
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| Informal Positions and Relationships | |
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| Informal Relations and Hierarchies | |
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| Embeddedness of the Informal within Instituted or Named Networks | |
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| Observed Roles | |
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| Summary | |
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| Basic Network Concepts, Part III: Network Segmentation | |
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| Introduction | |
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| Named and Unnamed Network Segments | |
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| Primary Groups, Cliques, and Clusters | |
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| Segmenting Networks from the Point of View of the Observer | |
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| Segmenting Groups on the Basis of Cohesion | |
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| Resistance to Disruption | |
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| Structural Similarity and Structural Equivalence | |
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| Core/Periphery Structures | |
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| Where We Are Now | |
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| The Psychological Foundations of Social Networks | |
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| Getting Things Done | |
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| Community and Support | |
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| Safety and Affiliation | |
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| Effectiveness and Structural Holes | |
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| Safety and Social Networks | |
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| Effectiveness and Social Networks | |
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| Both Safety and Effectiveness? | |
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| Driving for Status or Rank | |
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| Cultural Differences in Safety, Effectance, and Rank | |
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| Motivations and Practical Networks | |
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| Motivations of Corporate Actors | |
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| Cognitive Limits on Individual Networks | |
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| Where We Are Now | |
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| Small Groups, Leadership, and Social Networks: The Basic Building Blocks | |
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| Introduction | |
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| Primary Groups and Informal Systems: Propositions | |
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| Pure Informal Systems | |
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| How to Find Informal Systems | |
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| Asymmetric Ties and the Influence of the External System | |
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| Formalizing the System | |
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| Where We Are Now | |
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| Organizations and Networks | |
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| The Contradictions of Authority | |
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| Emergent Networks in Organizations | |
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| The Factory Floor | |
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| Information-Driven Organizations | |
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| Inside the Box, Outside the Box, or Both | |
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| Bridging the Gaps: Tradeoffs between Network Size, Diversity, and Social Cohesion | |
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| Where We Are Now | |
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| The Small World, Circles, and Communities | |
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| Introduction | |
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| How Many People Do You Know? | |
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| The Skewed Distribution of the Number of People One Knows | |
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| Formal Small World Models | |
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| Clustering in Social Networks | |
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| Social Circles | |
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| The Small World Search | |
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| Applications of Small World Theory to Smaller Worlds | |
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| Where We Are Now | |
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| Networks, Influence, and Diffusion | |
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| Networks and Diffusion-An Introduction | |
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| The Basic Model | |
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| Exogenous Factors in the Adoption of Innovations | |
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| Influence and Decision-Making | |
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| The Current State of Personal Influence | |
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| Self-Designated Opinion Leaders or Influentials | |
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| Characteristics of Opinion Leaders and Influentials | |
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| Group Influence | |
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| Epidemiology and Network Diffusion | |
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| Social Networks and Epidemiology | |
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| Social Networks and HIV-AIDS | |
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| Transporting Disease-Large-Scale Models | |
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| Tipping Points and Thresholds | |
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| Threshold | |
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| Where We Are Now | |
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| Networks as Social Capital | |
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| Introduction | |
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| The General Idea of Social Capital | |
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| Social Capital as an Investment | |
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| Individual-Level Social Capital | |
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| Social Support | |
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| Individual Networked Resources: Position and Resource Generators | |
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| Correlates of Individual Social Capital | |
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| Other Indicators of Networked Resources | |
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| Social Capital as an Attribute of Social Systems | |
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| Theorists of Social System Social Capital | |
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| Bowling Alone | |
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| Recent Findings on Social System Social Capital and Its Consequences | |
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| Where We Are Now | |
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| Ethical Dilemmas of Social Network Research | |
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| Networks as a Research Paradigm | |
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| Anonymity, Confidentiality, Privacy, and Consent | |
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| Who Benefits | |
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| Cases and Examples | |
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| Survey Research | |
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| Organization Research | |
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| Terrorists and Criminals | |
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| Networks and Terrorism: The CASOS Projects | |
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| Conclusion: More Complicated than the Belmont Report | |
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| Coda: Ten Master Ideas of Social Networks | |
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| Introduction | |
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| The Ten Master Ideas | |
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| Notes | |
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| Bibliography | |
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| Index | |