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Human Dynamics
Volume 30, Number 1 (2011)

Human Dynamics: Threats to our national security embodied in terrorism, insurgency, and asymmetric warfare cannot be addressed only by physical means in the natural environment. They emerge from and act through the social and cultural environments in which people interact with each other, with groups, and with broad movements. Human dynamics, the realm of study and operations in those environments, is recognized as crucial to dealing with these threats. This issue of the Johns Hopkins APL Technical Digest presents several APL efforts aimed at increasing our understanding of and ability to operate in these social, cultural, and behavioral domains. Outer Planetary Exploration: One of the scientific goals of a mission to Jupiter is to investigate the potential habitability of Jupiter’s ocean-bearing moon Europa, as described in the last article of this issue.

HUMAN DYNAMICS Human Dynamics: Guest Editor’s Introduction John R. Gersh

Analysis of Social Movements in Warfare Chuck Crossett and Ronald J. Buikema

Sociocultural Modeling in the Social Identity Look-Ahead Simulation and the Green Country Model Nathan D. Bos, Ariel M. Greenberg, Jonathon J. Kopecky, Alex G. Ihde, and Scott D. Simpkins

Coarse- and Fine-Grained Sentiment Analysis of Social Media Text Clayton R. Fink, Danielle S. Chou, Jonathon J. Kopecky, and Ashley J. Llorens

Processing Named Entities in Text Paul McNamee, James C. Mayfield, and Christine D. Piatko

Social Query: Looking for Social Signals from Online Artifacts Jaime Montemayor and Christopher P. Diehl

Group Activity Analysis for Persistent Surveillance Jeffrey S. Lin, Ariel M. Greenberg, Clayton R. Fink, Wayne L. Bethea, and Andreas G. Savvides

Understanding and Enhancing Crew Endurance Megan L. Moundalexis, Jennifer A. B. McKneely, William B. Fitzpatrick, and Cory C. Sheffer

OUTER PLANETARY EXPLORATION Exploring Europa: Science from the Jupiter Europa Orbiter—A Future Outer Planet Flagship Mission Louise M. Prockter, Kenneth E. Hibbard, Thomas J. Magner, and John D. Boldt