Complexity Digest 2009.17

2009/08/14

Editor-in-Chief: Carlos Gershenson
Founding Editor: Gottfried Mayer

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Content

  1. The economy needs agent-based modelling, Nature
    1. Economics: Meltdown modelling, Nature
    2. Modelling to contain pandemics, Nature
  2. Generalized Models Reveal Stabilizing Factors in Food Webs, Science
  3. Capuchin Monkeys Display Affiliation Toward Humans Who Imitate Them, Science
    1. Social Structure Of Primate Interaction Networks Facilitates The Emergence Of Cooperation, Biol. Lett.
  4. Where Do Innovations Come From? Transformations In The US Economy, 1970�2006, Socio-Econ. Rev.
  5. Worries About Africa as Pandemic Marches On, Science
    1. Type 2 Poliovirus Back From The Dead in Nigeria, Science
    2. Does Education Affect HIV Status? Evidence From Five African Countries, World Bank Econ. Rev.
  6. Dollar A Day Revisited, World Bank Econ. Rev.
  7. Folding DNA into Twisted and Curved Nanoscale Shapes, Science
  8. In Retrospect: Lamarck's treatise at 200, Nature
    1. Darwin Would Have Loved DNA: Celebrating Darwin 200, Biol. Lett.
  9. Quantitative measure of randomness and order for complete genomes, Phys. Rev. E
  10. Steering plasmodium with light: Dynamical programming of Physarum machine, arXiv
    1. Progress Toward Artificial Cells: Synthesis Of Uniform, Unilamellar Vesicles By Means Of Microfluidics, Innovations-report
    2. Genetic Circuit That Regulates Behavior Of Stem Cells Discovered, ScienceDaily
  11. Advances in development reverse fertility declines, Nature
  12. Dense packings of the Platonic and Archimedean solids, Nature
  13. Cultural Evolution Continues Throughout Life, Innovations-report
  14. Evolutionary games on scale-free networks with a preferential selection mechanism, Physica A
    1. Simulated Trust: A cheap social learning strategy, Theoretical Population Biology
    2. Preferential selection promotes cooperation in a spatial public goods game, Physica A
    3. Cooperative behavior in evolutionary snowdrift game with bounded rationality, Physica A
  15. Does uncertainty lead to sincerity? Simple and complex voting mechanisms, Social Choice and Welfare
  16. A complex systems methodology to transition management, Journal of Evolutionary Economics
    1. Irrationality, Non-equilibrium Conflict and Complex Dynamics, Peace Economics, Peace Science and Public Policy
  17. Leaping the Efficiency Gap, Science
  18. The Validation and Assessment of Machine Learning: A Game of Prediction from High-Dimensional Data, PLoS ONE
  19. Book Announcements
    1. The Calculus of Friendship: What a Teacher and a Student Learned about Life while Corresponding about Math, Princeton University Press
    2. Chaos: Concepts, Control and Constructive Use, Springer
    3. Language Complexity as an Evolving Variable, Oxford University Press
    4. From System Complexity to Emergent Properties, Springer
  20. Links & Snippets
    1. Other Publications
    2. Conference Announcements
    3. Webcast Announcements
    4. Other Announcements

  1. The economy needs agent-based modelling, Nature Next Article Bookmark and Share

    Excerpt: Such models do not rely on the assumption that the economy will move towards a predetermined equilibrium state, as other models do. Instead, at any given time, each agent acts according to its current situation, the state of the world around it and the rules governing its behaviour. An individual consumer, for example, might decide whether to save or spend based on the rate of inflation, his or her current optimism about the future, and behavioural rules deduced from psychology experiments. The computer keeps track of the many agent interactions, to see what happens over time. Agent-based simulations can handle a far wider range of nonlinear behaviour than conventional equilibrium models. Policy-makers can thus simulate an artificial economy under different policy scenarios and quantitatively explore their consequences.

    1. Economics: Meltdown modelling, Nature Next Article Bookmark and Share

      Excerpt: Financial regulators do not have the tools they need to predict and prevent meltdowns, says physicist-turned-sociologist Dirk Helbing (...) They can do a good job of tracking an economy using the statistical measures of standard econometrics, as long as the influences on the economy are independent of each other, and the past remains a reliable guide to the future. But the recent financial collapse was a 'systemic' meltdown, in which intertwined breakdowns in housing, banking and many other sectors conspired to destabilize the system as a whole.

    2. Modelling to contain pandemics, Nature Next Article Bookmark and Share

      Excerpt:
      J. PARKER
      Simulation of a pandemic beginning in Tokyo.
      As the world braces for an autumn wave of swine flu (H1N1), the relatively new technique of agent-based computational modelling is playing a central part in mapping the disease's possible spread, and designing policies for its mitigation.

  2. Generalized Models Reveal Stabilizing Factors in Food Webs, Science Next Article Bookmark and Share

    Abstract: Insights into what stabilizes natural food webs have always been limited by a fundamental dilemma: Studies either need to make unwarranted simplifying assumptions, which undermines their relevance, or only examine few replicates of small food webs, which hampers the robustness of findings. We used generalized modeling to study several billion replicates of food webs with nonlinear interactions and up to 50 species. In this way, first we show that higher variability in link strengths stabilizes food webs only when webs are relatively small, whereas larger webs are instead destabilized. Second, we reveal a new power law describing how food-web stability scales with the number of species and their connectance. Third, we report two universal rules: Food-web stability is enhanced when (i) species at a high trophic level feed on multiple prey species and (ii) species at an intermediate trophic level are fed upon by multiple predator species.

  3. Capuchin Monkeys Display Affiliation Toward Humans Who Imitate Them, Science Next Article Bookmark and Share

    Excerpts: During social interactions, humans often unconsciously and unintentionally imitate the behaviors of others, which increases rapport, liking, and empathy between interaction partners. This effect is thought to be an evolutionary adaptation that facilitates group living and may be shared with other primate species. Here, we show that capuchin monkeys, a highly social primate species, prefer human imitators over non-imitators in a variety of ways (...) These results demonstrate that imitation can promote affiliation in nonhuman primates. Behavior matching that leads to prosocial behaviors toward others may have been one of the mechanisms at the basis of altruistic behavioral tendencies in capuchins and in other primates, including humans.
    Editor's Note: Imitation as a mechanism for cooperation may be present in many species other than primates. It has been speculated that the neural mechanism behind imitation is based on "mirror neurons". It still remains to be explored how widespread mirror neurons are in the animal kingdom.

    1. Social Structure Of Primate Interaction Networks Facilitates The Emergence Of Cooperation, Biol. Lett. Next Article Bookmark and Share

      Excerpts: Animal cooperation has puzzled biologists for a long time as its existence seems to contravene the basic notion of evolutionary biology that natural selection favours �selfish� genes that promote only their own well-being. Evolutionary game theory has shown that cooperators can prosper in populations of selfish individuals if they occur in clusters, interacting more frequently with each other than with the selfish. Here we show that social networks of primates possess the necessary social structure to promote the emergence of cooperation. By simulating evolutionary dynamics of cooperative behaviour on interaction networks (�) we found that for most groups network reciprocity augmented the fixation probability for cooperation. (�)

  4. Where Do Innovations Come From? Transformations In The US Economy, 1970�2006, Socio-Econ. Rev. Next Article Bookmark and Share

    Excerpt: This article seeks to reconnect to scholarship from the 1970s and 1980s that emphasized significant discontinuities in the development of the US economy. Drawing on a unique data set of prize-winning innovations between 1971 and 2006, we document three key changes in the US economy. The first is an expanding role of inter-organizational collaborations in producing award-winning innovations. The second is the diminishing role of the largest corporations as sources of innovation. The third is the expanded role of public institutions and public funding in the innovation process. This leads us to the surprising conclusion that the USA increasingly resembles a Developmental Network State (...).

  5. Worries About Africa as Pandemic Marches On, Science Next Article Bookmark and Share

    Summary: With HIV/AIDS, TB, malaria, and a host of other diseases competing for attention, influenza has never been high on most African countries' priority lists, and getting a handle on the spread of influenza viruses in Africa has long been problematic because laboratories and surveillance have been lacking. But a 2002 outbreak in Madagascar and a similar one in the Democratic Republic of the Congo in 2003 suggest that, with its myriad of problems, Africa"especially south of the Sahara"might be harder hit by the 2009 H1N1 pandemic virus than any other continent. The virus has so far been detected in 16 African countries, and experts fear that the high HIV infection rates in many African countries could worsen the pandemic's impact.

    1. Type 2 Poliovirus Back From The Dead in Nigeria, Science Next Article Bookmark and Share

      Summary: In 1999, the Global Polio Eradication Initiative scored an unequivocal victory: It wiped one of three serotypes of wild poliovirus, type 2, off the face of the earth, except for samples stored in labs for study or vaccine creation. That triumph left just two foes to battle, poliovirus types 1 and 3, which have continued to put up quite a fight. But now a version of type 2 has returned. Springing back to life from a weakened form of the pathogen used in a vaccine, poliovirus type 2 is causing a runaway outbreak in Nigeria, where types 1 and 3 are also raging. In July, the World Health Organization issued a global alert warning that type 2 poliovirus in Nigeria posed an "increasing risk of international spread." It's a stunning setback for the initiative, now already 9 years past its original deadline for vanquishing the virus.

    2. Does Education Affect HIV Status? Evidence From Five African Countries, World Bank Econ. Rev. Next Article Bookmark and Share

      Excerpt: Data from the first five Demographic and Health Surveys to include HIV testing for a representative sample of the adult population are used to analyze the socioeconomic correlates of HIV infection and associated sexual behavior. Emerging from a wealth of country relevant results, some important findings can be generalized. First, successive marriages are a significant risk factor. Second, contrary to prima facie evidence, education is not positively associated with HIV status. However, schooling is one of the most consistent predictors of behavior and knowledge(�).

  6. Dollar A Day Revisited, World Bank Econ. Rev. Next Article Bookmark and Share

    Abstract: The article presents the first major update of the international $1 a day poverty line, proposed in World Development Report 1990: Poverty for measuring absolute poverty by the standards of the world's poorest countries. In a new and more representative data set of national poverty lines, a marked economic gradient emerges only when consumption per person is above about $2.00 a day at 2005 purchasing power parity. Below this, the average poverty line is $1.25, which is proposed as the new international poverty line. The article tests the robustness of this line to alternative estimation methods and explains how it differs from the old $1 a day line.
    • Source: Dollar A Day Revisited, M. Ravallion - mravallionaworldbank.org, S. Chen, P. Sangraula, DOI: 10.1093/wber/lhp007, The World Bank Economic Review, 2009, 23(2): online 2009/06/26
    • Contributed by Pritha Das - prithadas01ayahoo.com

  7. Folding DNA into Twisted and Curved Nanoscale Shapes, Science Next Article Bookmark and Share

    Abstract: We demonstrate the ability to engineer complex shapes that twist and curve at the nanoscale from DNA. Through programmable self-assembly, strands of DNA are directed to form a custom-shaped bundle of tightly cross-linked double helices, arrayed in parallel to their helical axes. Targeted insertions and deletions of base pairs cause the DNA bundles to develop twist of either handedness or to curve. The degree of curvature could be quantitatively controlled, and a radius of curvature as tight as 6 nanometers was achieved. We also combined multiple curved elements to build several different types of intricate nanostructures, such as a wireframe beach ball or square-toothed gears.

  8. In Retrospect: Lamarck's treatise at 200, Nature Next Article Bookmark and Share

    Excerpt:
    C. THEVENIN (1802"03)/PRIVATE COLLECTION/BRIDGEMAN ART LIBRARY
    Ambiguous translation may have added to misconceptions about Jean Baptiste Lamarck's evolutionary opus.
    But within the maddening, confusing and repetitive pages of Lamarck's exposition lurk concepts that are central to modern evolutionary thought. Stated in contemporary terminology, they include the ideas that species change through evolutionary time; that evolutionary change is slow and imperceptible; that evolution occurs through adaptation to the environment; that it generally progresses from the simple to the complex, although in a few cases it proceeds in reverse; and that species are related to one another by common descent. Furthermore, Lamarck incorporated into his theory the fact that the world is old, and proposed that the evolutionary process started with abiogenesis " the origin of life from inanimate matter.
    So how and why has Lamarckism become a shorthand for foolishness? (...)
    In fact, the amount of scientific rubbish that Lamarck put on paper certainly exceeds the quantity of good science in his scientific oeuvre. In this respect, he is no different from Aristotle, Isaac Newton, Darwin, Albert Einstein, Fred Hoyle or Francis Crick.

    1. Darwin Would Have Loved DNA: Celebrating Darwin 200, Biol. Lett. Next Article Bookmark and Share

      Abstract: Analysis of DNA sequences now plays a key role in evolutionary biology research. If Darwin were to come back today, I think he would be absolutely delighted with molecular evolutionary genetics, for three reasons. First, it solved one of the greatest problems for his theory of evolution by natural selection. Second, it gives us a tool that can be used to investigate many of the questions he found the most fascinating. And third, DNA data confirm Darwin's grand view of evolution.

  9. Quantitative measure of randomness and order for complete genomes, Phys. Rev. E Next Article Bookmark and Share

    Abstract: We propose an order index, phi, which gives a quantitative measure of randomness and order of complete genomic sequences. It maps genomes to a number from 0 (random and of infinite length) to 1 (fully ordered) and applies regardless of sequence length. The 786 complete genomic sequences in GenBank were found to have phi values in a very narrow range, phig=0.031-0.015+0.028. We show this implies that genomes are halfway toward being completely random, or, at the “edge of chaos.” We further show that artificial “genomes” converted from literary classics have phi's that almost exactly coincide with phig, but sequences of low information content do not. We infer that phig represents a high information-capacity “fixed point” in sequence space, and that genomes are driven to it by the dynamics of a robust growth and evolution process. We show that a growth process characterized by random segmental duplication can robustly drive genomes to the fixed point.

  10. Steering plasmodium with light: Dynamical programming of Physarum machine, arXiv Next Article Bookmark and Share

    Abstract: A plasmodium of Physarum polycephalum is a very large cell visible by unaided eye. The plasmodium is capable for distributed sensing, parallel information processing, and decentralized optimization. It is an ideal substrate for future and emerging bio-computing devices. We study space-time dynamics of plasmodium reactiom to localised illumination, and provide analogies between propagating plasmodium and travelling wave-fragments in excitable media. We show how plasmodium-based computing devices can be precisely controlled and shaped by planar domains of illumination.

    1. Progress Toward Artificial Cells: Synthesis Of Uniform, Unilamellar Vesicles By Means Of Microfluidics, Innovations-report Next Article Bookmark and Share

      Excerpts: In cosmetics, lipid vesicles, also known as liposomes, effectively transport ingredients through the skin. However, they are also used to encapsulate pharmaceuticals and release them at the intended point of treatment. They are used as tiny biochemical reactors, and in research they serve as models for biomembranes and cells. The applications described above all require unilamellar vesicles (�). The Japanese team has now developed a new method that is simple but still meets all of these needs. The secret of their success is a microfluidic technique in which tiny volumes of liquid flow through tiny channels. This elicits effects that do not occur in systems of �normal size�. (�)

    2. Genetic Circuit That Regulates Behavior Of Stem Cells Discovered, ScienceDaily Next Article Bookmark and Share

      Excerpts: Jordi (�) has discovered the genetic circuit that controls the behavior of embryonic stem cells. (�) The process by which a stem cell is transformed into another type of cell is called differentiation, and the ability to change into other cell types is known as pluripotentiality. Up until now it was generally believed in the international scientific community that embryonic stem cells are in a state of biochemical repose, static, awaiting a signal that causes them to differentiate, that gives them the initial trait which leads them to become bone, blood or skin cells, or any other type of cell (�).

  11. Advances in development reverse fertility declines, Nature Next Article Bookmark and Share

    Excerpt: Here we show, using new cross-sectional and longitudinal analyses of the total fertility rate and the human development index (HDI), a fundamental change in the well-established negative relationship between fertility and development as the global population entered the twenty-first century. Although development continues to promote fertility decline at low and medium HDI levels, our analyses show that at advanced HDI levels, further development can reverse the declining trend in fertility. The previously negative development"fertility relationship has become J-shaped, with the HDI being positively associated with fertility among highly developed countries.

  12. Dense packings of the Platonic and Archimedean solids, Nature Next Article Bookmark and Share

    Excerpts: Here we formulate the generation of dense packings of polyhedra as an optimization problem, using an adaptive fundamental cell subject to periodic boundary conditions (we term this the 'adaptive shrinking cell' scheme). Using a variety of multi-particle initial configurations, we find the densest known packings of the four non-tiling Platonic solids (the tetrahedron, octahedron, dodecahedron and icosahedron) in three-dimensional Euclidean space. (...) Combining our simulation results with derived rigorous upper bounds and theoretical arguments leads us to the conjecture that the densest packings of the Platonic and Archimedean solids with central symmetry are given by their corresponding densest lattice packings. This is the analogue of Kepler's sphere conjecture for these solids.

  13. Cultural Evolution Continues Throughout Life, Innovations-report Next Article Bookmark and Share

    Excerpts: By successively acquiring culture in the form of values, ideas, and actions throughout their lives, humans influence future learning and the capacity for cultural evolution. (�) "Since there are many similarities between biological evolution and cultural changes, the research community has often suggested that the theory of biological evolution can also be applied in relatively unaltered form as a model for cultural evolution. Using these methods, genes are replaced by so-called memes, which are small cultural elements (�). The current article uses mathematical models to show that there is a crucial and often neglected difference between biological and cultural evolution. (�)

  14. Evolutionary games on scale-free networks with a preferential selection mechanism, Physica A Next Article Bookmark and Share

    Excerpt: Considering the heterogeneity of individuals' influence in the real world, we introduce a preferential selection mechanism to evolutionary games (the Prisoner's Dilemma Game and the Snowdrift Game) on scale-free networks and focus on the cooperative behavior of the system.

    1. Simulated Trust: A cheap social learning strategy, Theoretical Population Biology Next Article Bookmark and Share

      Excerpt: Animals use heuristic strategies to determine from which conspecifics to learn socially. This leads to directed social learning.[...] Our findings point out new theoretical opportunities to regulate social learning for animals.

    2. Preferential selection promotes cooperation in a spatial public goods game, Physica A Next Article Bookmark and Share

      Excerpt: We introduce a preferential selection mechanism into a spatial public goods game where players are located on a square lattice. [...] It is shown that the introduction of such a preferential selection can remarkably promote the emergence of cooperation ...

    3. Cooperative behavior in evolutionary snowdrift game with bounded rationality, Physica A Next Article Bookmark and Share

      Excerpt: An evolutionary snowdrift game (SG) that incorporates bounded rationality and limited information in the evolutionary process is proposed and studied.

  15. Does uncertainty lead to sincerity? Simple and complex voting mechanisms, Social Choice and Welfare Next Article Bookmark and Share

    Abstract: We ask whether the absence of information about other voters� preferences allows optimal voting to be interpreted as sincere. We start by classifying voting mechanisms as simple and complex according to the number of message types voters can use to elect alternatives. We show that while in simple voting mechanisms the elimination of information about other voters� preferences allows optimal voting to be interpreted as sincere, this is no longer always true for complex ones. In complex voting mechanisms, voters� optimal strategy may vary with the size of the electorate. (...)

  16. A complex systems methodology to transition management, Journal of Evolutionary Economics Next Article Bookmark and Share

    Abstract: There is a general sense of urgency that major technological transitions are required for sustainable development. Such transitions are best perceived as involving multiple transition steps along a transition path. Due to the path dependent and irreversible nature of innovation in complex technologies, an initial transition step along some preferred path may cut off paths that later may turn out to be more desirable. For these reasons, initial transition steps should allow for future flexibility, where we define flexibility as robustness regarding changing evidence and changing preferences. (...)

    1. Irrationality, Non-equilibrium Conflict and Complex Dynamics, Peace Economics, Peace Science and Public Policy Next Article Bookmark and Share

      Abstract: The bulk of research in conflict theory turns on the pivot of modern decision theory that is, in turn, concerned with an optimal decision-making, which is predicated upon an ideal decision maker who is fully informed and hence fully rational. Conflict is difficult to comprehend in the context of optimal decision making that accords undue importance to the volition of exchange, the gains from trade and, hence, the win-win aspect of exchange. We offer for the first time a model of non-equilibrium conflict in a simple framework of duopoly that examines decision-makers who refrain from maximising short-run returns/profits. (...)

  17. Leaping the Efficiency Gap, Science Next Article Bookmark and Share

    Summary: Efficiency is at the heart of the Obama Administration's energy strategy. Tighter appliance standards are on a fast track through the Department of Energy bureaucracy. Billions of dollars from the stimulus package are pouring into programs to weatherize and retrofit homes with energy-saving technology, investments that quickly pay for themselves in lower energy bills. But meeting the more ambitious goal of reducing greenhouse gas emissions will require more aggressive measures that cause some economic pain. The biggest challenge is not inventing new technology but persuading more people to adopt technology and practices that already exist. A new generation of researchers and government officials is now examining new strategies for energy efficiency, looking for the key"or a whole ring of keys"that will unlock its full potential.
    • Source: Leaping the Efficiency Gap, Dan Charles, DOI: 10.1126/science.325_804, Science Vol. 325. no. 5942, pp. 804 - 811, 2009/08/14

  18. The Validation and Assessment of Machine Learning: A Game of Prediction from High-Dimensional Data, PLoS ONE Next Article Bookmark and Share

    Excerpt: In applied statistics, tools from machine learning are popular for analyzing complex and high-dimensional data. However, few theoretical results are available that could guide to the appropriate machine learning tool in a new application. [...] The article presents a game which provides some grounds for conducting a fair model comparison.

  19. Book Announcements Next Article Bookmark and Share

    1. The Calculus of Friendship: What a Teacher and a Student Learned about Life while Corresponding about Math, Princeton University Press Next Article Bookmark and Share

      Summary:
      The Calculus of Friendship is the story of an extraordinary connection between a teacher and a student, as chronicled through more than thirty years of letters between them. What makes their relationship unique is that it is based almost entirely on a shared love of calculus. For them, calculus is more than a branch of mathematics; it is a game they love playing together, a constant when all else is in flux. The most inspiring ideas of calculus, differential equations, and chaos theory are explained through metaphors, images, and anecdotes in a way that all readers will find beautiful.

    2. Chaos: Concepts, Control and Constructive Use, Springer Next Article Bookmark and Share

      Summary:
      The study of chaotic behaviour in nonlinear, dynamical systems is now a well established research domain with ramifications into all fields of sciences. A more recent discovery is that chaos can be controlled and, under appropriate conditions, can actually be constructive in the sense of becoming a control parameter itself for the system under investigation. The present work is putting emphasis on the latter aspects, and after recalling the paradigm changes introduced by the concept of chaos, leads the reader through the basics of chaos control and the issue of synchronization in chaotic systems.

    3. Language Complexity as an Evolving Variable, Oxford University Press Next Article Bookmark and Share

      Summary:
      This book presents a challenge to the widely-held assumption that human languages are both similar and constant in their degree of complexity. Geoffrey Sampson's introductory chapter re-examines and clarifies the notion and theoretical importance of complexity in language, linguistics, cognitive science, and evolution. The authors consider the links between linguistic structure and social complexity and relate their findings to the causes and processes of language change. Their arguments are frequently controversial and provocative; their conclusions add up to an important challenge to conventional ideas about the nature of language.

    4. From System Complexity to Emergent Properties, Springer Next Article Bookmark and Share

      Summary:
      Emergence and complexity refer to the appearance of higher-level properties and behaviours of a system that obviously comes from the collective dynamics of that system's components. These properties are not directly deducible from the lower-level motion of that system. Emergent properties are properties of the "whole'' that are not possessed by any of the individual parts making up that whole. This book highlights complexity modelling through dynamical or behavioral systems. The pluridisciplinary purposes, developed along the chapters, are able to design links between a wide-range of fundamental and applicative Sciences.

  20. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. From complexities to the rules of thumb: towards optimisation in pricing decisions, Erkki K. Laitinen, 2009/08/01, International Journal of Applied Management Science, vol. 1, issue 4, pages 340-366, DOI: 10.1504/IJAMS.2009.026197
      2. Inter-market information flow: a nonlinear approach, Adel Boubaker, Saber Sebai, 2009/08/01, Applied Economics Letters, vol. 16, issue 10, pages 1009-1015, DOI: 10.1080/17446540802345414
      3. Assessing the Validity Domains of Graphical Gaussian Models in Order to Infer Relationships among Components of Complex Biological Systems, Fanny Villers et al., 2009/08/01, Statistical Applications in Genetics and Molecular Biology, vol. 7, issue 2, pages 14, DOI: 10.2202/1544-6115.1371
      4. Zeno Squeezing of Cellular Automata, Martin Schaller and Karl Svozil, 2009/08/06, arXiv:0908.0835
      5. People With Lots Of Working Memory Are Not Easily Distracted, 2009/08/08, ScienceDaily & University of Oregon
      6. Traffic Jam In Brain Causes Schizophrenia Symptoms; First Mouse To Develop Disease As Teenager, Just Like Humans, 2009/08/11, ScienceDaily & Northwestern University
      7. The Right Messenger For A Healthy Immune Response, 2009/08/11, ScienceDaily & Helmholtz Association of German Research Centres
      8. New Computer Simulation Helps Explain Folding In Important Cellular Protein, 2009/08/11, ScienceDaily & University of Georgia
      9. Brain Damage Seen On Brain Scans May Predict Memory Loss In Old Age, 2009/08/11, Innovations-report
      10. Stress Hormone Dynamics: An Adaptation To Migration?, A. L. K. Nilsson - anna.nilssonabio.uio.no, M. I. Sandell, 2009/08/23, online 2009/05/05, Biological Letters, DOI: 10.1098/rsbl.2009.0193
      11. Nectar, Not Colour, May Lure Insects To Their Death, K. F. Bennett, A. M. Ellison - aellisonafas.harvard.edu, 2009/08/23, online 2009/05/08, Biological Letters, DOI: 10.1098/rsbl.2009.0161
      12. On fairness and randomness, Manfred Jaeger, 2009/09, Information and Computation Volume 207, Issue 9, Pages 909-922, DOI: 10.1016/j.ic.2009.01.005
      13. Generalized risk-dominance and asymmetric dynamics, Peski M, 24 July 2009, Journal of Economic Theory, in Press, DOI: 10.1016/j.jet.2009.05.007
      14. Song Types, Song Performance, And The Use Of Repertoires In Dark-Eyed Juncos (Junco Hyemalis), G. C. Cardoso - gcardosoaunimelb.edu.au, J. W. Atwell, E. D. Ketterson, T. D. Price, Jul.-Aug. 2009, online 2009/06/15, Behavioral Ecology, DOI: 10.1093/beheco/arp079

    2. Conference Announcements Next Article Bookmark and Share

      1. EULAKS Summer School, Mexico City, Mexico, 09/08/17-30
      2. 2nd International Workshop on Guided Self-Organisation (GSO-2009), Leipzig, Germany, 09/08/18-20
      3. NICO Complexity Conference, Evanston, IL, USA, 09/09/1-3
      4. Mathematical Models in Ecology and Evolution 2009, Bristol, UK, 09/09/10-11
      5. Darwin Meets von Neumann: European Conference on Artificial Life 2009, Budapest, Hungary, 09/09/13-16
      6. IEEE International Conference on Self-Adaptive and Self-Organizing Systems , San Francisco, California, 09/09/14-18
      7. 6th Conference of the European Social Simulation Association, Guilford, UK, 09/09/14-18
      8. European Conference on Complex Systems 2009 (ECCS'09), University of Warwick, UK, 09/09/21-25
        1. Statistical Mechanics of Molecular and Cell Biology, 09/09/23
        2. EmergeNET3: Emergence and Networks, 09/09/24
      9. International Workshop on Natural Computing, Himeji, Japan, 09/09/23-25
      10. The 2009 International Conference on Adaptive & Intelligent Systems (ICAIS'09), Klagenfurt, Austria, 09/09/24-26
      11. Complexity Theories of Cities have come of Age, Delft Netherlands, 09/09/24-27
      12. IC3K 2009 - Int'l Joint Conf. on Knowledge Discovery, Knowledge Engineering and Knowledge Management, Madeira, Portugal, 09/10/6-8
      13. Systems Chemistry II: Evolution and Systems, Balatonfüred/Lake Balaton, Hungary, 09/10/18-23
      14. Workshop: Computing action policies that ensure resilience of social and ecological systems, Madeira, Portugal, 09/10/21-22
      15. Natural and Biomimetic Mechanosensing, Dresden, Germany, 09/10/26-28
      16. The 11th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2009) , Lyon, France, 09/11/03-06
      17. International Conference on Intelligent Networking and Collaborative Systems (INCoS 2009) , Barcelona, Spain, 09/11/4-6
      18. the 9th Asia-Pacific Complex Systems Conference Complex'09 How to Manage Complexity? , Tokyo, Japan, 09/11/4-7
      19. CAS in the Natural and Social Sciences, AAAI Fall Symposium Arlington, VA, USA, 09/11/5-7
      20. Ninth International Conference on Epigenetic Robotics: Modeling Cognitive Development in Robotic Systems, Venice, Italy, 09/11/12-14
      21. 1st Global Peter F. Drucker Forum, ‘Managing the Future’, Vienna, Austria, 09/11/19-20
      22. Darwin09, International Workshop on 150 Years after Darwin: From Molecular Evolution to Language, Palma de Mallorca, Spain, 09/11/23-27
      23. 9th International Conference on Intelligent Systems Design and Applications, Pisa, Italy, 09/11/30-12/02
      24. World Congress on Nature & Biologically Inspired Computing (NaBIC 2009), Coimbatore, India, 09/12/9-11
      25. Dynamics Days 2010, Evanston, IL, USA, 10/01/04-07
      26. 5th Biennial Convention about the philosophical, epistemological, and methodological implications of the Theory of Complexity, Havana, Cuba, 10/01/6-8
      27. 2nd International Conference on Agents and Artificial Intelligence (ICAART 2010), Valencia, Spain, 10/01/22-24
      28. 20th European Meeting on Cybernetics and Systems Research, EMCSR 2010, University of Vienna, Austria, 10/04/6-9
      29. The IV International Workshop on Nature Inspired Cooperative Strategies for Optimization - NICSO 2010, Granada, Spain, 09/05/12-14
      30. Artificial Life XII (ALife XII), Odense, Denmark, 10/08/19--23

    3. Webcast Announcements Next Article Bookmark and Share

      1. Symmetry Festival 2009, Budapest, Hungary, 09/08/1-4.

      2. International Workshop on Coping with Crises in Complex Socio-Economic Systems, Zurich, Switzerland, 09/06/8-12

      3. Memorial Service for Dr Gottfried Mayer, Founding Editor Complexity Digest, Taipei, Taiwan (1954-2009). Video [RM], 09/02/13

      4. Making Connections: In Memory and Celebration of the Life of Dr. Gottfried Mayer (1954-2009). Video [RM] [MPG], 09/02/13

      5. Eulogy for Gottfried Mayer by Dean LeBaron [WMV, 25 Mb], [RM, 10 Mb], 09/02/10

      6. Can Ants Solve Traffic Jams?, Danielle Parsons, Slatev.com, 08/07/22

      7. Reseau Nationale des Systemes Complexes , (in French), 2007
      8. World Economic Forum , Davos, Switzerland, 08/01/22-27
      9. TED Talks, TED Conferences LLC , since 2006
      10. Talking Robots: The PodCast on Robotics and AI, Ecole Polytechnique Federale de Lausanne, Switzerland, 06/11/03
      11. Potentials of Complexity Science for Business, Governments, and the Media 2006, Budapest, Hungary, 06/08/03-05
      12. 6th Intl Conf on Complex Systems (ICCS), Boston, MA, 06/06/25-30
      13. Artificial Life X, 10th Intl Conf on the Simulation and Synthesis of Living Systems, Bloomington, IN, USA. 2006/06/03-07
      14. 6th Understanding Complex Systems Symposium, Urbana-Champaign, Il, 06/05/15-18
      15. Ralph Abraham on Complexity Digest, , Calcutta, India, 05/12/27
      16. An Afternoon with Michael Crichton, Washington, 05/11/06
      17. Illuminating the Shadow of the Future, Ann Arbor, Mi 05/09/23-25
      18. Open Network of Centres of Excellence in Complex Systems - Brainstorming Meeting, Paris, France 05/09/19-23
      19. Complexity, Science & Society Conference 2005, U. Liverpool, UK 2005/09/11-14
      20. ECAL 2005 - VIIIth European Conference on Artificial Life, Canterbury, Kent, UK 2005/09/5-9
      21. T. Irene Sanders, Executive Director and Founder, The Washington Center for Complexity & Public Policy, 05/08/27, QuickTime video (10:38 min), Podcast
      22. North American Society for the Psychology of Sport and Physical Activity 2005 Conference, Virtual Conference Network, St. Pete's Beach, Florida, 05/06/09-11
      23. Understanding Complex Systems - Computational Complexity and Bioinformatics, Virtual Conference Network, Urbana-Champaign, Il, UIUC, 05/05/16-19
      24. Nonlinearity, Fluctuations, and Complexity, with a celebration of the 65th birthday of Gregoire Nicolis. , Complexity Session, Universite' Libre de Bruxelles, Brussels, Belgium, 05/03/16
      25. 1st European Conference on Complex Systems, Torino, Italy, 04/12/5-7
      26. From Autopoiesis to Neurophenomenology: A Tribute to Francisco Varela (1946-2001), Paris, France, 2004/06/18-20
      27. Evolutionary Epistemology, Language, and Culture, Brussels, Belgium, 04/05/26-28
      28. International Conference on Complex Systems 2004, Boston, 04/05/16-21
      29. Nonlinear Dynamics And Chaos: Lab Demonstrations, Strogatz, Steven H., Internet-First University Press, 1994
      30. CERN Webcast Service, Streamed videos of Archived Lectures and Live Events
      31. Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998
      32. Edge Videos

    4. Other Announcements Bookmark and Share

      • European Conference on Complex Systems, 21-25 September 2009, University of Warwick, UK
        The principal annual international conference in Complexity Science.
        For up to date information and to register, see http://eccs09.info .
        Key dates:
        13 July: Reduced registration ends
        1 September: Poster submission deadline, but apply early to be sure your submission is considered in time to get your abstract published in the programme.
        1 September: Last assured registrations

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