Duke Network Analysis Center

events

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Past Events

Homophily, Contagion, Confounding: Pick Any Three

DNAC Seminar Series
Cosma Shalizi, Statistics Department - Carnegie Mellon University
Individuals near each other in a social network tend to behave
April, 2 2013 | 12:30 - 2:00 | 329 Soc/Psych Building

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International Linkages and Liberalization of Abortion: Competing Institutional Logics and International Organization Networks

DNAC Seminar Series
Dong-Ju Lee, Harvard University - Department of Sociology
Abortion laws, despite their critical roles in political and social debates, have received little attention from comparative sociologists. This paper studies the worldwide liberalization of abortion laws among 202 countries during 1920-2007, focusing on t
March, 26 2013 | 12:30 - 2:00 | 329 Soc/Psych Building (McKinney Room)

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Constructal Law of Design and Evolution in Nature

DNAC Seminar Series
Adrian Bejan, Duke University - Department of Mechanical Engineering and Material Sciences
The reoccurring patterns of nature have long puzzled even the most devoted proponents of chance and Darwin’s theory of evolution. But the Constructal Law changes the terms of this debate, and shows that a single law of physics governs the “design”
March, 19 2013 | 12:30 - | Room 329 Sociology/Psychology Building

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Latent space models for multiview network data: An approach to understanding social structure in Twitter

DNAC Seminar Series
Tyler McCormick, University of Washington - Department of Statistics, Sociology

March, 5 2013 | 12:30 - 2:00 | 329 Soc/Psych Building (McKinney Room)

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Throughflow centrality reveals important species in ecosystems and environmental impacts of shrimp trawling in Core Sound, NC.

DNAC Seminar Series
Stuart Borrett, UNC, Wilmington - Systems Ecology and Ecoinformatics Laboratory
Centrality is a common tool for characterizing node importance in network science, but it is rarely used in ecology. Here, I introduce throughflow centrality as a global indicator of node importance for the energy-matter flow dynamics ON networks. I the
February, 26 2013 | 12:30 - 2:00 | 329 Soc/Psych Building (McKinney Room)

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Telling a fuller story of research impact with altmetrics and ImpactStory

DNAC Seminar Series
Jason Priem, School of Information and Library Science, UNC-Chapel Hill
In growing numbers, the workflows of scholars are moving online. As that happens, important parts of the scientific process, once hidden, are being exposed. Conversations, arguments, recommendations, reads, bookmarks--the stuff of day-to-day science--is l
February, 12 2013 | 12:30 - 2:00 | Soc/Psych 329 (McKinney Room)

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Influence, Selection, and Activity: Social Structure and Processes in Medicare Lobbying and Agenda Setting.

DNAC Seminar Series
John Scott, Department of Public Policy - University of North Carolina, Chapel Hill
By what process do interest group representatives select the issues on which they lobby the Congress? Any one policy area often has dozens or even hundreds of proposed bills and equally as many interest groups and stakeholders. In a crowded and competit
February, 5 2013 | 12:30 - 2:00 | 329 Soc/Psych Building (McKinney Room)

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Topic Modeling in Blog Networks

DNAC Seminar Series
David Banks and Justin Gross, Duke University - Department of Statistical Science; University of North Carolina at Chapel Hill - Department of Political Science
Justin Gross and David Banks will lead a discussion on a new research project to apply topic model methods to understand the dynamics of political blog networks. In some approximate sense, the _New York Times_ is the beating heart of the political blogos
January, 22 2013 | 12:30 - 2:00 | 329 Soc/Psych Building (McKinney Room)

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Gaining Knowledge Expertise Through Social Networks

DNAC Seminar Series
Christina Prell, University of Maryland - Sociology Department
If knowledge expertise is a form of ‘stock capital’ that actors can pursue, what role do social networks play in helping actors attain this goal? Ron Burt discusses the ‘network entrepreneur’ as an actor that pursues the role of a broker, spannin
December, 4 2012 | 12:30 - | 329 Soc/Psych Building (McKinney Room)

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NeuroRhetoric: Mapping the semantic structure of cognitive neuroscience

DNAC Seminar Series
Greg Applebaum, Duke University - Duke Institute for Brain Sciences

November, 6 2012 | - | 329 Soc/Psych Building (McKinney Room)

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Network Sampling Coverage in RDS: How Much of the Network Do We See?

DNAC Seminar Series
Jeffrey A. Smith, M. Giovanna Merli, James Moody, Jing Li, Sharon Weir, Duke University - Sociology Department, Immunology; University of North Carolina at Chapel Hill - School of Public Health
Here we provide a first look at some work we are doing to evaluate the geographic coverage rates in a given respondent driven sample case. The project involves lots of bits DNAC members might find fun: an RDS on commercial sex workers in China with augme
October, 23 2012 | - | 329 Soc/Psych Building (McKinney Room)

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Measuring Social Change as Categorical Change: Race and Education in America

DNAC Seminar Series
Jeff Smith, Duke University - Sociology Department
Sociologists often depict demographic categories as socially constructed, non-essential, and fluid. In practice, however, social trends still typically reflect the changing outcomes (e.g. health, income) of fixed, exogenous demographic categories. The goa
October, 2 2012 | 12:30 - 2:00 | 329 Soc/Psych Building (McKinney Room)

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Removal Centrality: A Comparative Evaluation of System-Influence Centrality Measures

DNAC Seminar Series
James Moody, Peter Mucha and S. Joshua Mendelsohn, Duke University - Sociology Department; University of North Carolina at Chapel Hill - Department of Mathematics

September, 25 2012 | - | 329 Soc/Psych Building (McKinney Room)

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Uncommon Collaborators: How Network Ties Enable and Constrain Organizational Action

DNAC Seminar Series
Brad Fulton, Duke University - Sociology Department
Most social capital research analyzes how involvement in voluntary associations benefits individuals or collectives. Rarely does it address how social capital affects voluntary associations themselves; in particular, how inter-organizational ties enable a
September, 4 2012 | 12:30 - | 329 Soc/Psych Building (McKinney Room)

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An Agent-Based Model of the Human Brain

DNAC Seminar Series
Karen Joyce, Wake Forest - Department of Biomedical Engineering
Agent-based modeling is a great utility for studying complex systems, where the comprising components are typically very simple, but the assembled whole often exhibits sophisticated emergent behavior. Agent based modeling is a
April, 24 2012 | 12:00 PM - 1:30 PM | 329 Soc/Psych Building (McKinney Room)

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Terms of Endearment: An Equilibrium Model of Sex and Matching

DNAC Seminar Series
Peter Arcidiacono, Duke University - Department of Economics

April, 10 2012 | 12:00 - 1:30 | Soc/Psych Building Room 329

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Corporate Social Capital in Chinese Guanxi Culture

DNAC Seminar Series
Yanjie Bian, University of Minnesota - Department of Sociology
We present a conceptualization of corporate social capital within the context of Chinese guanxi culture. Sociologists have defined corporate social capital as “processes of forming and mobilizing social actors’ network connections within and between o
April, 3 2012 | 12:00 PM - 1:30 PM | 329 Soc/Psych Building (McKinney Room)

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Shanghai Sexual Mixing: Are sexual contact patterns in Shanghai compatible with an HIV/AIDS epidemic?

DNAC Seminar Series
Giovanna Merli, James Moody, Robin Gauthier, and S Joshua Mendelsohn, Duke University

March, 20 2012 | 12:00 PM - 1:30 PM | 329 Soc/Psych Building (McKinney Room)

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Dual Embeddedness and Institutional Transference: Network-based Job Finding and Macro-Institutional Dynamics in Germany and the United States

DNAC Seminar Series
Steve McDonald, North Carolina State University - Department of Sociology
This project explores how differences in institutional context (across space and time) impact social relations, with a specific focus on network-based job finding behavior--finding jobs through personal contacts. First, cross-national survey data are used
February, 21 2012 | 12:00 PM - | Duke University - 329 Soc/Psych (McKinney Rm)

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Leveraging social networks for health promotion: The promise and perils of peer-to-peer information sharing

DNAC Seminar Series
Brian Southwell, University of North Carolina, Chapel Hill - School of Journalism and Mass Communication

February, 14 2012 | 12:00 PM - | Duke University - 329 Soc/Psych (McKinney Rm)

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Reconstructing the Ship of Theseus: Groups, Roles & Trajectories in Early Adolescent Friendship Networks

DNAC Seminar Series
James Moody, Duke University - Department of Sociology

February, 7 2012 | 12:00 PM - 1:30 PM | Duke University - 329 Soc/Psych (McKinney Rm)

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Peter Mucha will be discussing research on network clustering

DNAC Seminar Series
Peter Mucha, University of North Carolina, Chapel Hill - Department of Mathematics

January, 31 2012 | 12:00 PM - 1:30 PM | Duke University - 329 Soc/Psych (McKinney Rm)

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Social Networks & Health: The Power of Connectivity

Workshop
Tom Valente, University of Southern California - Department of Preventive Medicine
Valente will discuss the field of social network analysis and introduce several key hypotheses that show how networks influence behavior. Valente will present data from individual and community level studies on adolescent smoking, substance use, community
December, 8 2011 | 3:30 PM - 5:30 PM | Rhodes Conference Rm. Sanford School of Public Policy

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Scalable Tracking of Dynamic Networks

DNAC Seminar Series
Rebecca Willett,
Online optimization methods are useful in a variety of applications with sequential observations of a dynamic environment. Often such methods are designed to minimize an accumulated loss metric, and the analysis techniques are appealing because of their a
November, 28 2011 | 12:45 - 2:00 | Duke University - 329 Soc/Psych (McKinney Rm)

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Linear Social Networks Models

Workshop
Steven N. Durlauf, University of Wisconsin at Madison - Department of Economics
This paper provides a systematic analysis of identification in linear social networks models. This is both a theoretical and an econometric exercise in that it links identification analysis to a rigorously delineated model of interdependent decisions. We
November, 17 2011 | 3:30 - |

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Linear Social Networks Models

DNAC Seminar Series
Steven Durlauf, University of Wisconsin - Dept of Economics
TBA
November, 17 2011 | TBA - TBA | Duke University

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Novelty, metaknowledge, and models of discovery

DNAC Seminar Series
Jacob Foster, University of Chicago - Department of Sociology
What makes an idea
November, 8 2011 | 2:50 - 3:50 | Hudson Hall 125

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Contagious Capital: A Network Analysis of Interconnected Intermediaries

DNAC Seminar Series
Jesse Blocher, University of North Carolina at Chapel Hill - Kenan-Flagler Business School
I apply network analysis to portfolio managers linked through interconnected asset holdings and find that they are susceptible to capital flow shocks experienced by nearby neighbors. These shocks not only affect immediate neighbors, but propagate and spil
November, 7 2011 | 12:45 - 2:00 | Duke University - 329 Soc/Psych (McKinney Rm)

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Ideological Extremity and Primary Success: A Social Network Approach

DNAC Seminar Series
David Sparks, Duke University - Department of Political Science

October, 24 2011 | 12:45 - 2:00 | Duke University - 329 Soc/Psych (McKinney Rm)

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Mining Text Networks

DNAC Seminar Series
David Banks, Duke University - Department of Statistical Science

October, 4 2011 | 12:45 - 2:00 | Duke University - 329 Soc/Psych (McKinney Rm)

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Inferring Global Networks from Local Samples

DNAC Seminar Series
Jeff Smith, Duke University - Dept of Sociology

September, 19 2011 | 12:45 PM - 2:00 PM | Duke University - 329 Soc/Psych (McKinney Rm)

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Internet Privacy: It is not getting better

DNAC Seminar Series
Balachander Krishnamurthy, AT&T
The leakage of privacy on the Internet continues unabated. I will present results from a number of studies over the last five years that show increasing aggregation of user-related data by a steadily decreasing number of entities. I will present details o
September, 12 2011 | 12:45 - 14:00 | Duke University, Soc-Psych 329

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General Meeting

DNAC Seminar Series
DNAC Affiliates, Duke Network Analysis Center

September, 5 2011 | 12:30 - 14:00 | 329 Soc/Psych (the McKinney Room)

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Complex Networks Transition Workshop

Workshop
Complex Networks Transition Workshop, SAMSI
This workshop provides a time to look back over the achievements of the SAMSI Complex Networks program and to highlight directions for future research.
June, 6 2011 | 09:00 - 17:00 | 19 T.W. Alexander Drive. Research Triangle Park, NC 27709-4006

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Development rooted in interwoven networks

DNAC Seminar Series
Philip Benfey, Duke University – Dept of Biology
Discusses the genetic networks that control cell identity within the Arabidopsis root and their relationship to the resulting physical network of branching roots.
April, 25 2011 | - | Duke University – 329 Soc/Psych

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Introduction to Social Network Analysis (Mini-Course)

Course
James Moody, Duke University - Dept of Sociology
This two-part mini workshop provides an overview of social network research. It focuses on the tools, measures and modeling strategies most commonly used in social network analysis.
April, 21 2011 | 9:00am - 5:00pm |

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Using network analysis to study care-coordination system for children with complex-chronic conditions

DNAC Seminar Series
Savithri Nageswaran, Wake Forest Baptist Medical Center
Children with complex chronic conditions (CCC) receive care from diverse medical, educational and social service providers through various agencies for a prolonged period of time. Coordination of care between providers serving these children is lacking i
April, 18 2011 | 12:30 - 2:00 |

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Modeling the content of science: The case of HIV/AIDS research, 1990-2008

DNAC Seminar Series
Ryan Light, University of Oregon - Dept of Sociology
The story of scientific change is typically told in one of two ways: a historical focus on the great scientists or a more sociological approach that focuses on the networks of production through co-authorship or credit through co-citation. The former ofte
April, 11 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Social Structure of Facebook Networks

DNAC Seminar Series
Mason Porter, University of Oxford - Dept of Mathematics

April, 4 2011 | 12:00pm - 2:00pm |

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The Microsociology of Interdisciplinarity: Graduate students as networked social actors and cultural objects in motion

DNAC Seminar Series
Regina Smardon, University of Virginia - Institute for Advanced Studies In Culture
Our research is based on a one-year ethnographic study of an interdisciplinary cancer research center which in turn was part of a larger mixed methods NSF funded study investigating the social organization of innovation. We explore the role of graduate st
March, 28 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Complex Networks: Dynamics on Networks

DNAC Seminar Series
Complex Networks: Dynamics on Networks, SAMSI
The SAMSI working group Dynamics ON Networks has been studying this question for evolutionary games and various models of the spread of opinions and epidemics, both for tree like random networks and for clustered networks. The main purpose of this worksho
March, 21 2011 | 08:30 - 13:00 | 19 T.W. Alexander Drive. Research Triangle Park, NC 27709-4006

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Voter models in the age of Facebook, iPads, and Sarah Palin

DNAC Seminar Series
Rick Durrett, Duke University - Dept of Mathematics
TBA
March, 14 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Estimated Sampling Variance in RDS

DNAC Seminar Series
Ashton Verdery and Ted Mouw, UNC Sociology
This project explores the reliability of RDS estimates of variance, using random walk simulations of facebook networks data. The results suggest that RDS variance estimates do not accurately indicate when the true variance is high.
February, 28 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Simulation Models for Diffusion over Multirelational Dynamic Networks

DNAC Seminar Series
James Moody, Duke Sociology
TBA
February, 21 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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How Much Does it Cost to have a Baby? Differences in Perceptions of the Cost of Childbearing

DNAC Seminar Series
Heather Rackin, Duke Sociology
TBA
February, 7 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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The Structure of Consensus: Cohesion and Hierarchy in Peer Networks

DNAC Seminar Series
Robin Gauthier, Duke Sociology
This paper presents the effect of density and hierarchy on normative consensus. I present a two-by-two typology of social networks characterized by their level of density and hierarchy (low-low, low-high, high-low, high-high). I use the ergm package to si
February, 7 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Local Cities, Global Influence

DNAC Seminar Series
S Joshua Mendelsohn, Duke Sociology
What makes a global city? Some scholars have argued that global cities occupy structurally advantageous positions within the global network, while others have focused on special processes that occur between the city and its region, imbuing the city with d
February, 7 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Macrostructure from Survey Data: Generating Whole Systems from Ego Networks

DNAC Seminar Series
Jeff Smith, Duke Sociology
TBA
January, 31 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Markets or Networks? Rural Households' Borrowing Choices in Western China

DNAC Seminar Series
Yanlong Zhang, Duke Sociology
TBA
January, 31 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Strategic Interaction and Networks

DNAC Seminar Series
Rachel Kranton, Duke Economics
This paper brings a general network analysis to a wide class of economic games. A network, or interaction matrix, tells who directly interacts with whom. A major challenge is determining how network structure shapes overall outcomes. We have a striking re
January, 24 2011 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Complex Networks: Dynamics of Networks Workshop

DNAC Seminar Series
Complex Networks: Dynamics of Networks Workshop, SAMSI
TBA
January, 10 2011 | 08:30 - 15:30 | 19 T.W. Alexander Drive. Research Triangle Park, NC 27709-4006

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Longitudinal Analysis of Networks: Temporal Exponential Random Graph Models, their Estimation, and Applications

DNAC Seminar Series
Skyler Cranmer, UNC Political Science
TBA
December, 9 2010 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Using network structure to estimate latent features in hard-to-reach populations

DNAC Seminar Series
Tyler McCormick, Columbia Statistics
We propose network-based statistical models for learning about groups which are difficult to reach using standard surveys, such as the homeless or individuals with HIV/AIDS. Rather than sampling directly, we reach these individuals through their social ne
November, 18 2010 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Multiscale Analysis on Graphs

DNAC Seminar Series
Mauro Maggioni, Duke Mathematics
We present a technique for viewing weighted undirected graphs at multiple scales by homogenizing the natural random walk at different time scales. This leads to multiscale representations of the graph itself, as well as of functions on the graph. We discu
November, 11 2010 | 12:30 - 14:00 | 329 Soc/Psych, Duke University

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Dynamics of Boolean Networks

DNAC Seminar Series
Joshua Socolar, Duke Physics
I will describe in broad terms the behavior of networks consisting of binary elements that perform Boolean logic functions on their inputs, emphasizing issues that arise in applications to gene regulation and to free-running digital electronic circuits.
November, 4 2010 | 12:30 - 14:00 | 329 Soc-Psych, Duke University

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Complex Networks Modeling Workshop

DNAC Seminar Series
Complex Networks Modeling Workshop, SAMSI
The goal of this workshop is to bring together researchers working on the sampling, modeling, and inference of networks, for the purpose of helping move the current state of knowledge on these inter-related tasks to rest on a more principled and integrate
October, 20 2010 | 08:30 - 15:30 | 19 T.W. Alexander Drive. Research Triangle Park, NC 27709-4006

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5th Annual Duke Systems Biology Symposium

DNAC Seminar Series
5th Annual Duke Systems Biology Symposium, Duke Institute for Genome Sciences and Policy
The Duke Center for Systems Biology and the Duke Institute for Genome Sciences & Policy announce the 5th Annual Duke Systems Biology Symposium, to be held on the campus of Duke University on Thursday, October 7th 2010. Attendance is free and open to all.
October, 7 2010 | 08:30 - 18:00 | French Family Sciences Center, Duke University

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Complex Networks: Theory and Applications

Course
Complex Networks: Theory and Applications, SAMSI
This course will focus on the mathematical and statistical analysis and modeling of networked systems, such as arise in biological, social, and technological contexts.
September, 7 2010 | 16:30 - 19:00 | 19 T.W. Alexander Drive. Research Triangle Park, NC 27709-4006

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2010-11 Program on Complex Networks Opening Tutorials & Workshop

Workshop
Program on Complex Networks - Opening Tutorials & Workshop, SAMSI
TBA
August, 29 2010 | 08:30 - 15:30 | 19 T.W. Alexander Drive. Research Triangle Park, NC 27709-4006

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