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www.necsi.edu
New England Complex Systems Institute
238 Main Street Suite 319, Cambridge, MA 02142
Phone: 617-547-4100 Fax: 617-661-7711

Food riots, revolutions, ethnic violence, urban health, fads and panics arise from collective actions. Complex systems science provides new opportunities to understand these collective behaviors by describing the patterns of behavior of individuals interacting through social networks. Predicting collective action is often easier than that of individuals because of the reduced role of individual choice. The role of individuals in the social context, as well as the role of organizational structures—governments, institutions, and corporations—can also be analyzed. See also our page on economic systems.

Publications

Government

D.K. Albino, A. Hu, Y. Bar-Yam, Corporations and Regulators: The Game of Influence in Regulatory Capture. arXiv:1310.0057 (October 1, 2013).

Y. Bar-Yam, M. Woolsey, Debt Limit: The Future of Democracy? NECSI Report 2007-05-01 (May, 2007).

Riots and Revolutions

Y. Bar-Yam, C. Friedman, Swiss-ification: Syria's Best Chance for Peace (September 4, 2013).

C. Friedman, D.K. Albino, Y. Bar-Yam, Political Stability and Military Intervention in Egypt. arXiv 1307.3982 (July 8, 2013). [PDF]

A. Gard-Murray, Y. Bar-Yam, Complexity and the Limits of Revolution: What Will Happen to the Arab Spring? arXiv:1212.3041 (December 11, 2012). [PDF]

M. Lagi, K.Z. Bertrand, Y. Bar-Yam, The Food Crises and Political Instability in North Africa and the Middle East. arXiv:1108.2455 (August 10, 2011). [PDF]

M. Lagi, Yavni Bar-Yam, K.Z. Bertrand, Yaneer Bar-Yam, UPDATE February 2012 — The Food Crises: Predictive validation of a quantitative model of food prices including speculators and ethanol conversion. arXiv:1203.1313 (March 6, 2012). [PDF]

Yavni Bar-Yam, M. Lagi, and Yaneer Bar-Yam, South African Riots: Repercussion of the Global Food Crisis and US Drought (January 2, 2013). [PDF]

K. Bertrand, Y. Bar Yam, Contagion and cascades through the Middle East (February 1, 2011).

Y. Bar-Yam, A. S. Gard-Murray, Framing a complexity theory solution to the Middle East crises (February 24, 2011).

NECSI analyzes unrest in the Middle East. (2011).

Global Food

Yavni Bar-Yam, M. Lagi, and Yaneer Bar-Yam, South African Riots: Repercussion of the Global Food Crisis and US Drought (January 2, 2013). [PDF]

D.K. Albino, K.Z. Bertrand, Y. Bar-Yam, Food for fuel: The price of ethanol. arXiv:1210.6080 (October 4, 2012). [PDF]

K.Z. Bertrand, G. Lindsay, Y. Bar-Yam, Food briefing, NECSI Report 2012-08-01 (August 15, 2012).

M. Lagi, Yavni Bar-Yam, Yaneer Bar-Yam, UPDATE July 2012 — The Food Crises: The US Drought (July 23, 2012). [PDF]

M. Lagi, A.S. Gard-Murray and Y. Bar-Yam, Impact of ethanol conversion and speculation on Mexico corn imports, New England Complex Systems Institute (May 2012).

M. Lagi, Yavni Bar-Yam, K.Z. Bertrand, Yaneer Bar-Yam, UPDATE February 2012 — The Food Crises: Predictive validation of a quantitative model of food prices including speculators and ethanol conversion. arXiv:1203.1313 (March 6, 2012). [PDF]

M.J. Widener, Yavni Bar-Yam, A. Gros, S. Metcalf, Yaneer Bar-Yam, Modeling Policy and Agricultural Decisions in Afghanistan. arXiv:1111.5351 (November 21, 2011). GeoJournal 2013, 78(4) 591-599.[PDF]

M. Lagi, Yavni Bar-Yam, K.Z. Bertrand, Yaneer Bar-Yam, The Food Crises: A Quantitative Model of Food Prices Including Speculators and Ethanol Conversion. arXiv:1109.4859 (September 21, 2011). [PDF]

M. Lagi, K.Z. Bertrand, Y. Bar-Yam, The Food Crises and Political Instability in North Africa and the Middle East. arXiv:1108.2455 (August 10, 2011). [PDF]

Ethnic Violence

A. Gros, A.S. Gard-Murray, Y. Bar-Yam Conflict in Yemen: From Ethnic Fighting to Food Riots. arXiv:1207.5778 (July 24, 2012). [PDF]

A. Rutherford, D. Harmon, J. Werfel, S. Bar-Yam, A.S. Gard-Murray, A. Gros, Y. Bar-Yam, Good Fences: The Importance of Setting Boundaries for Peaceful Coexistence. PLOS (May 21, 2014). [PDF]

M. Lim, R. Metzler, and Y. Bar-Yam. Global Pattern Formation and Ethnic/Cultural Violence, Science 317, 5844 (September 14, 2007). abstract and full paper - press release

Y. Bar-Yam: Global Control, Ethnic Violence and Terrorism, from Making Things Work, Chapter 16. Knowledge Press (2005). [PDF]

Ethnic Violence research page

Social Networks

K.Z. Bertrand, M. Bialik, K. Virdee, A. Gros, Y. Bar-Yam, Sentiment in New York City: A High Resolution Spatial and Temporal View> arXiv:1308.5010 (August 20, 2013).

J. Adebayo, T. Musso, K. Virdee, C. Friedman, Y. Bar-Yam, An Exploration of Social Identity: The Structure of the BBC News-Sharing Community on Twitter. NECSI Report 2013-08-02 (August 2, 2013).

A. Herdağdelen, W. Zuo, A.S. Gard-Murray, Y. Bar-Yam, An Exploration of Social Identity: The Geography and Politics of News-Sharing Communities in Twitter, Complexity 19, 10-20 (2013). [PDF]

D. Braha, B. Stacey, and Y. Bar-Yam, Corporate competition: A self-organized network. Social Networks. Volume 33. Issue 3. Pages 219-230. (July 2011). [PDF]

D. Braha, Y. Bar-Yam, From centrality to temporary fame: dynamic centrality in complex networks, Complexity 12 (2006). abstract, PDF file, Extended Version (PDF), press release

Communications systems

V. Misra, D. Harmon, and Y. Bar-Yam, Vulnerability Analysis of High Dimensional Complex Systems, Lecture Notes in Computer Science 6366, 560-572 (Springer, Heidelberg, 2010).[PDF]

Urban Food

M.J. Widener, S.S. Metcalf, and Y. Bar-Yam, Developing a Mobile Produce Distribution System for Low-income Urban Residents in Food Deserts. Journal of Urban Health (2012). [PDF]

M.J. Widener, S. Metcalf, Y. Bar-Yam, Dynamic Urban Food Environments: A Temporal Analysis of Access to Healthy Foods, American Journal of Preventive Medicine 41, pp. 439-441 (September 22, 2011). [PDF]

M.J. Widener, S. Metcalf, Y. Bar-Yam, Agent-based Modeling of Policies to Improve Urban Food Access for Low-income Populations, Applied Geography 40, pp. 1-10, (2013). [PDF]

Right photo © Nasser Nouri