Complexity Digest 2009.13

2009/06/19

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

New ComDig website: turing.iimas.unam.mx/~comdig
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Previous issue 2009.12 | Next issue 2009.14

Content

  1. The common patterns of nature, arXiv
  2. Modeling Nonlinear Dynamics and Chaos: A Review, Mathematical Problems in Engineering
  3. The Energy Landscape of Social Balance, arXiv
    1. The complexity of advice-giving, Complexity
  4. Lifetime of Anthropogenic Climate Change: Millennial Time Scales of Potential CO2 and Surface Temperature Perturbations, Journal of Climate
    1. Planting the forest of the future, Nature
  5. Bonnie Bassler on how bacteria "talk", TED.com
  6. Emergence and pandemic potential of swine-origin H1N1 influenza virus, Nature
    1. Pandemic Potential of a Strain of Influenza A (H1N1): Early Findings, Science
    2. Strategies To Rein In Disease Epidemics Need To Be Retooled For Rural Populations, Innovations-report
  7. Unlocking the secrets of the genome, Nature
  8. Media research: The black box, Nature
    1. Does Movie Violence Increase Violent Crime?, Quar. J. Econ.
  9. Economic Recovery: Are Happy Days Here Again?, Knowledge@Wharton
    1. Volatility, Heterogeneous Agents and Chaos, The Electronic Journal of Evolutionary Modeling and Economic Dynamics
    2. The leadership of emergence: A complex systems leadership theory of emergence at successive organizational levels, The Leadership Quarterly
    3. Complexity, simplicity, simplexity, European Management Journal
  10. Self-organization in the developing nervous system: theoretical models, HFSP J.
    1. Self-organization in dissipative structures: A thermodynamic theory for the emergence of prebiotic cells and their epigenetic evolution, Biosystems
  11. So You Think Owning a Home Will Make You Happy? Don't Be Too Sure, Knowledge@Wharton
  12. Why Do Species Vary In Their Rate Of Molecular Evolution?, Biol. Lett.
  13. Mathematicians Take Aim At 'Phantom' Traffic Jams: New Model Could Help Design Better Roads, ScienceDaily
  14. Design Complexity In Termite-Fishing Tools Of Chimpanzees, Biol. Lett.
  15. Adaptation and the evolution of parasite virulence in a connected world, Nature
    1. Bumble-Bees Learn The Value Of Social Cues Through Experience, Biol. Lett.
  16. Simple Chemical System Created That Mimics DNA, ScienceDaily
  17. Structural complexity in digital images as an ecological indicator for monitoring forest dynamics across scale, space and time, Ecological Indicators
  18. The Academic Achievement Gap In Grades 3 To 8, Rev. Econ. & Stat.
  19. Book Announcements
    1. Risk Analysis of Complex and Uncertain Systems, Springer
    2. Weak Links: The Universal Key to the Stability of Networks and Complex Systems, Springer
    3. Science Matters: Humanities As Complex Systems, World Scientific Publishing Company
    4. Computational Complexity: A Modern Approach, Cambridge University Press
    5. Adaptive Networks: Theory, Models and Applications, Springer
  20. Links & Snippets
    1. Other Publications
    2. Conference Announcements
    3. Webcast Announcements
    4. Other Announcements

  1. The common patterns of nature, arXiv Next Article Bookmark and Share

    Excerpts: We typically observe large-scale outcomes that arise from the interactions of many hidden, small-scale processes. Examples include age of disease onset, rates of amino acid substitutions, and composition of ecological communities. The macroscopic patterns in each problem often vary around a characteristic shape that can be generated by neutral processes. (...) In this paper, I present the theoretical background by which we can understand why these neutral generative models are so successful. I show how the classic patterns such as Poisson and Gaussian arise. Each classic pattern was often discovered by a simple neutral generative model. The neutral patterns share a special characteristic: they describe the patterns of nature that follow from simple constraints on information.

  2. Modeling Nonlinear Dynamics and Chaos: A Review, Mathematical Problems in Engineering Next Article Bookmark and Share

    Summary: This paper reviews the major developments of modeling techniques applied to nonlinear dynamics and chaos. Model representations, parameter estimation techniques, data requirements, and model validation are some of the key topics that are covered in this paper, which surveys slightly over two decades since the pioneering papers on the subject appeared in the literature.
    • Source: Modeling Nonlinear Dynamics and Chaos: A Review, Luis A. Aguirre, Christophe Letellier, DOI: 10.1155/2009/238960, Mathematical Problems in Engineering, Volume 2009 (2009), 2009/03/01
    • Contributed by Anton Joha - antonjohaagmail.com

  3. The Energy Landscape of Social Balance, arXiv Next Article Bookmark and Share

    Abstract: We model a close-knit community of friends and enemies as a fully connected network with positive and negative signs on its edges. Theories from social psychology suggest that certain sign patterns are more stable than others. This notion of social "balance" allows us to define an energy landscape for such networks. Its structure is complex: numerical experiments reveal a landscape dimpled with local minima of widely varying depths. We derive rigorous bounds on the energies of these local minima and prove that they have a modular structure that can be used to classify them.

    1. The complexity of advice-giving, Complexity Next Article Bookmark and Share

      Abstract: Advice-giving about personal problems is a common form of human interaction. However, an open question is whether there is an abstract and general logic that explains how advice-giving works. In this study, we addressed this question from the perspective of dynamical systems. We measured the nonlinear dynamics of advice-giving by using recurrence quantification analysis. Analyzing 600 texts of request for advice and the advice given, our results uncover a typical logic of advice-giving, and suggest that advice-giving may be understood as a dynamic manipulation of perspective-taking.

  4. Lifetime of Anthropogenic Climate Change: Millennial Time Scales of Potential CO2 and Surface Temperature Perturbations, Journal of Climate Next Article Bookmark and Share

    Abstract: Multimillennial simulations with a fully coupled climateâ€"carbon cycle model are examined to assess the persistence of the climatic impacts of anthropogenic CO2 emissions. It is found that the time required to absorb anthropogenic CO2 strongly depends on the total amount of emissions; for emissions similar to known fossil fuel reserves, the time to absorb 50% of the CO2 is more than 2000 yr. The long-term climate response appears to be independent of the rate at which CO2 is emitted over the next few centuries. Results further suggest that the lifetime of the surface air temperature anomaly might be as much as 60% longer than the lifetime of anthropogenic CO2 and that two-thirds of the maximum temperature anomaly will persist for longer than 10 000 yr. This suggests that the consequences of anthropogenic CO2 emissions will persist for many millennia.

    1. Planting the forest of the future, Nature Next Article Bookmark and Share

      Excerpt: In a world in which many scientists fret about the toll that global warming is exacting on nature, O'Neill is actually doing something about it. A research scientist for the British Columbia Ministry of Forests, he is moving seedlings to areas that are outside their current comfort zone to test how they might handle the warmer conditions of the future. And he is behind a government push to move tree populations into new areas to prepare them for the warming climate.

  5. Bonnie Bassler on how bacteria "talk", TED.com Next Article Bookmark and Share

    About this talk: Bonnie Bassler discovered that bacteria "talk" to each other, using a chemical language that lets them coordinate defense and mount attacks. The find has stunning implications for medicine, industry -- and our understanding of ourselves.

  6. Emergence and pandemic potential of swine-origin H1N1 influenza virus, Nature Next Article Bookmark and Share

    Abstract: Influenza viruses cause annual epidemics and occasional pandemics that have claimed the lives of millions. The emergence of new strains will continue to pose challenges to public health and the scientific communities. A prime example is the recent emergence of swine-origin H1N1 viruses that have transmitted to and spread among humans, resulting in outbreaks internationally. Efforts to control these outbreaks and real-time monitoring of the evolution of this virus should provide us with invaluable information to direct infectious disease control programmes and to improve understanding of the factors that determine viral pathogenicity and/or transmissibility.

    1. Pandemic Potential of a Strain of Influenza A (H1N1): Early Findings, Science Next Article Bookmark and Share

      Excerpts: A novel influenza A (H1N1) virus has spread rapidly across the globe. Judging its pandemic potential is difficult with limited data, but nevertheless essential to inform appropriate health responses. By analyzing the outbreak in Mexico, early data on international spread, and viral genetic diversity, we make an early assessment of transmissibility and severity. Our estimates suggest that 23,000 (range 6000 to 32,000) individuals had been infected in Mexico by late April, giving an estimated case fatality ratio (CFR) of 0.4% (range: 0.3 to 1.8%) (...) Three different epidemiological analyses gave basic reproduction number (R0) estimates in the range of 1.4 to 1.6, whereas a genetic analysis gave a central estimate of 1.2. (...) Transmissibility is therefore substantially higher than that of seasonal flu, and comparable with lower estimates of R0 obtained from previous influenza pandemics.

    2. Strategies To Rein In Disease Epidemics Need To Be Retooled For Rural Populations, Innovations-report Next Article Bookmark and Share

      Excerpt: Strategies to mitigate disease epidemics in cities will not be so effective in rural areas, according to computer engineers, because in cities, people have a lot of informal contact with one another but looser ties. Rural residents also report being more likely to visit and interact with others during an epidemic. A graph showing one rural resident, represented in the center, and all of the people that person is connected with, represented by nodes radiating from the center. An infectious disease striking a large city may seem like a disastrous scenario -- millions of people sharing apartment buildings, crammed on buses and trains (�).

  7. Unlocking the secrets of the genome, Nature Next Article Bookmark and Share

    Excerpt: (...) our understanding of how the information encoded in a genome can produce a complex multicellular organism remains far from complete. To interpret the genome accurately requires a complete list of functionally important elements and a description of their dynamic activities over time and across different cell types. As well as genes for proteins and non-coding RNAs, functionally important elements include regulatory sequences that direct essential functions such as gene expression, DNA replication and chromosome inheritance.

  8. Media research: The black box, Nature Next Article Bookmark and Share

    Excerpt: Could it alter the brain to 'expect' overstimulation, so that ordinary reality would thereafter seem dull by comparison? And could such a mechanism help to explain the ongoing tsunami of attention deficit hyperactivity disorder (ADHD) diagnoses, whose rise had roughly coincided with the dramatic increase in media consumption in Western societies? (...) After analysing some 1,300 children for whom the appropriate data were available, they found that on average, a child who had watched two hours of television per day before the age of three was 20% more likely to have attentional problems at the age of seven, compared with a child who had watched none.

    1. Does Movie Violence Increase Violent Crime?, Quar. J. Econ. Next Article Bookmark and Share

      Excerpt: Laboratory experiments in psychology find that media violence increases aggression in the short run. We analyze whether media violence affects violent crime in the field. We exploit variation in the violence of blockbuster movies from 1995 to 2004, and study the effect on same-day assaults. We find that violent crime decreases on days with larger theater audiences for violent movies. The effect is partly due to voluntary incapacitation: between 6 P.M. and 12 A.M., a one million increase in the audience for violent movies reduces violent crime by 1.1% to 1.3%. (�)
      • Source: Does Movie Violence Increase Violent Crime?, G. Dahl, S. DellaVigna, DOI: 10.1162/qjec.2009.124.2.677, The Quarterly Journal of Economics, May 2009, Online 2009/05/19
      • Contributed by Pritha Das - prithadas01ayahoo.com

  9. Economic Recovery: Are Happy Days Here Again?, Knowledge@Wharton Next Article Bookmark and Share

    Summary: Stocks have rebounded on Wall Street during the past two months. The pace of job losses seems to be slowing down. Even quarterly reports from banks suggest that the banking sector is slowly struggling back to its feet. Do these signs portend the first indicators of an economic recovery? Not yet, according to experts at Wharton and elsewhere, who insist that despite some of the hopeful data, the recovery will be weaker and take longer to gain momentum than past slowdowns.

    1. Volatility, Heterogeneous Agents and Chaos, The Electronic Journal of Evolutionary Modeling and Economic Dynamics Next Article Bookmark and Share

      Summary: Agent heterogeneity has been used in recent economic literature to justify nonlinear dynamics for the time paths of aggregate economic variables. In this paper, the mechanism through which heterogeneous agents leads to chaotic motion is explained. Adding to a system with initial behavior heterogeneity an adaptive learning rule based on discrete choice theory, one is able to encounter a reasonable explanation for nonlinear motion.
      • Source: Volatility, Heterogeneous Agents and Chaos, Orlando Gomes, DOI: NA, The Electronic Journal of Evolutionary Modeling and Economic Dynamics, available online June 2009, 2009/06/01
      • Contributed by Anton Joha - antonjohaagmail.com

    2. The leadership of emergence: A complex systems leadership theory of emergence at successive organizational levels, The Leadership Quarterly Next Article Bookmark and Share

      Summary: Complexity science reframes leadership by focusing on the dynamic interactions between all individuals, explaining how those interactions can, under certain conditions, produce emergent outcomes. We develop a Leadership of Emergence using this approach, through an analysis of three empirical studies which document emergence in distinct contexts. Each of these studies identifies the same four �conditions� for emergence: the presence of a Dis-equilibrium state, Amplifying actions, Recombination/Self-organization, and Stabilizing feedback. From these studies we also show how these conditions can be generated through nine specific behaviors which leaders can enact.

    3. Complexity, simplicity, simplexity, European Management Journal Next Article Bookmark and Share

      Summary: �In the midst of order, there is chaos; but in the midst of chaos, there is order�, John Gribbin wrote in his book Deep Simplicity (p. 76). In this dialectical spirit, we discuss the generative tension between complexity and simplicity in the theory and practice of management and organization. Complexity theory suggests that the relationship between complex environments and complex organizations advanced by the well-known Ashby�s law, may be reconsidered: only simple organization provides enough space for individual agency to match environmental turbulence in the form of complex organizational responses.
      • Source: Complexity, simplicity, simplexity, Miguel Pina e Cunha, Arm�nio Rego, DOI: 10.1016/j.emj.2009.04.006, European Management Journal, Volume 22, Issue 2, 2009/06/01
      • Contributed by Anton Joha - antonjohaagmail.com

  10. Self-organization in the developing nervous system: theoretical models, HFSP J. Next Article Bookmark and Share

    Excerpt: Sensory maps in the nervous system often connect to each other in a topographic fashion. This is most strikingly seen in the visual system, where neighboring neurons in the retina project to neighboring neurons in the target structure, such as the superior colliculus. This article discusses the developmental mechanisms that are involved in the formation of topographic maps, with an emphasis on the role of theoretical models in helping us to understand these mechanisms. (...)

    1. Self-organization in dissipative structures: A thermodynamic theory for the emergence of prebiotic cells and their epigenetic evolution, Biosystems Next Article Bookmark and Share

      Summary: This paper presents a discussion on self-organization processes in dissipative structures, in order to highlight the general conditions for raising complexity and generate order. In particular, some concepts were introduced from non-equilibrium thermodynamics and from the Molecular Anamorphic Evolution Theory, especially concerning processes of matter randomization. Once a theoretical thermodynamics-based framework for understanding self-organizing systems had been presented, a spontaneous transition from macrostates richer in microstates to macrostates poorer in microstates was explained, as an attempt to point out the probable existing conditions at the formation of prebiotic structures.

  11. So You Think Owning a Home Will Make You Happy? Don't Be Too Sure, Knowledge@Wharton Next Article Bookmark and Share

    Summary: Owning a home has long been viewed as the cornerstone of the American Dream, the foundation for a happy family life and long-term financial security. Now, a new research paper challenges that conventional wisdom. Wharton's Grace Wong Bucchianeri, a professor of real estate, says her research shows that while homeowners experience significant joy, they also face more aggravation, spend less time with friends, and are even heavier than renters living in comparable homes.

  12. Why Do Species Vary In Their Rate Of Molecular Evolution?, Biol. Lett. Next Article Bookmark and Share

    Excerpts: Despite hopes that the processes of molecular evolution would be simple, clock-like and essentially universal, variation in the rate of molecular evolution is manifest at all levels of biological organization. Furthermore, it has become clear that rate variation has a systematic component: rate of molecular evolution can vary consistently with species body size, population dynamics, lifestyle and location. This suggests that the rate of molecular evolution should be considered part of life-history variation between species, which must be taken into account when interpreting DNA sequence differences between lineages. (�)

  13. Mathematicians Take Aim At 'Phantom' Traffic Jams: New Model Could Help Design Better Roads, ScienceDaily Next Article Bookmark and Share

    Excerpt: Countless hours are lost in traffic jams every year. Most frustrating of all are those jams with no apparent cause -- no accident, no stalled vehicle, no lanes closed for construction. Such phantom jams can form when there is a heavy volume of cars on the road. In that high density of traffic, small disturbances (a driver hitting the brake too hard, or getting too close to another car) can quickly become amplified into a full-blown, self-sustaining traffic jam. A team of MIT mathematicians has developed a model that describes how and under what conditions such jams form, which could help road designers minimize the odds of their formation. (�)

  14. Design Complexity In Termite-Fishing Tools Of Chimpanzees, Biol. Lett. Next Article Bookmark and Share

    Excerpts: Adopting the approach taken with New Caledonian crows (Corvus moneduloides), we present evidence of design complexity in one of the termite-fishing tools of chimpanzees (Pan troglodytes) in the Goualougo Triangle, Republic of Congo. Prior to termite fishing, chimpanzees applied a set of deliberate, distinguishable actions to modify herb stems to fashion a brush-tipped probe, which is different from the form of fishing tools used by chimpanzees in East and West Africa. This means that �brush-tipped fishing probes�, unlike �brush sticks�, are not a by-product of use but a deliberate design feature absent in other chimpanzee populations. (�) suggest that these wild chimpanzees are attentive to tool modifications. (�)

  15. Adaptation and the evolution of parasite virulence in a connected world, Nature Next Article Bookmark and Share

    Summary: The evolution of lowered virulence in spatially structured populations with limited dispersal has been suggested to be an example of adaptation at the group level. The extension of previous models now shows that the effect of dispersal can be understood within the framework of inclusive fitness theory, demonstrating that reduced virulence could be due to individual-level adaptation by the parasite.

    1. Bumble-Bees Learn The Value Of Social Cues Through Experience, Biol. Lett. Next Article Bookmark and Share

      Excerpt: Natural selection should lead animals to use social cues (SC) when they are useful, and disregard them when they are not. Theoretical investigation predicts that individuals should thus employ social learning �strategies�, but how might such context specificity be achieved on a proximate level? Operant conditioning, whereby the use of SC is reinforced through rewarding results, provides a potential mechanism. We investigate the role of reinforcement in joining behaviour in bumble-bees, Bombus terrestris. When bees visit unfamiliar flower species, they prefer to probe inflorescences where others are also foraging, and here we show that such behaviour is promoted through experience when conspecific presence reliably predicts reward. (�)

  16. Simple Chemical System Created That Mimics DNA, ScienceDaily Next Article Bookmark and Share

    Excerpt: A team of Scripps Research scientists has created a new analog to DNA that assembles and disassembles itself without the need for enzymes. Because the new system comprises components that might reasonably be expected in a primordial world, the new chemical system could answer questions about how life could emerge. The work, reported in the journal Science, might also be a starting point on the way to exotic new materials that repair themselves or transform in response to their environment. Scientists are both bemused and fascinated by the question of how life could have arisen on Earth. One of the most prominent theories is that, before the emergence of DNA, (�).

  17. Structural complexity in digital images as an ecological indicator for monitoring forest dynamics across scale, space and time, Ecological Indicators Next Article Bookmark and Share

    Summary: The development of ecological indicators for actively monitoring an ecosystem at a high resolution in scale, space and time is a challenge of primary interest. In this context, measures of structural complexity derived from close-range repeat photography may form a part of the solution. Moreover, recent mathematical tools are becoming accessible for characterizing the multivariate dynamics of natural systems given short, stochastic and non-stationary series. This field study is one of the first to demonstrate that old-growth forest ecosystems behave like complex systems exhibiting nonlinear vegetation structure and dynamics across scales.

  18. The Academic Achievement Gap In Grades 3 To 8, Rev. Econ. & Stat. Next Article Bookmark and Share

    Abstract: Using data for North Carolina public school students in grades 3 to 8, we examine achievement gaps between white students and students from other racial and ethnic groups. We focus on cohorts of students who stay in the state's public schools for all six years. While the black-white gaps are sizable and robust, both Hispanic and Asian students tend to gain on whites as they progress in school. Beyond simple mean differences, we find that the racial gaps in math between low-performing students have tended to shrink as students progress through school, while those for high-performing students have generally widened.
    • Source: The Academic Achievement Gap In Grades 3 To 8, C. T. Clotfelter, H. F. Ladd, J. L. Vigdor, DOI: 10.1162/rest.91.2.398, The Review of Economics and Statistics, May 2009, Online 2009/05/06
    • Contributed by Pritha Das - prithadas01ayahoo.com

  19. Book Announcements Next Article Bookmark and Share

    1. Risk Analysis of Complex and Uncertain Systems, Springer Next Article Bookmark and Share

      Summary: This book shows Quantitative Risk Assessment (QRA) can be used to improve risk management decisions and policies. It develops and illustrates QRA methods for complex and uncertain biological, engineering, and social systems � systems that have behaviors that are just too complex to be modelled accurately in detail with high confidence � and shows how they can be applied to applications including assessing and managing risks from chemical carcinogens, antibiotic resistance, mad cow disease, terrorist attacks, and accidental or deliberate failures in telecommunications network infrastructure.

    2. Weak Links: The Universal Key to the Stability of Networks and Complex Systems, Springer Next Article Bookmark and Share

      Summary: How can our societies be stabilized in a crisis? Why can we enjoy and understand Shakespeare? Why are fruitflies uniform? How do omnivorous eating habits aid our survival? What makes the Mona Lisa�s smile beautiful? Could there possibly be a single answer to all these questions? This book shows that the statement: "weak links stabilize complex systems" provides the key to understanding each of these intriguing puzzles, and many others too. The author uses weak (low affinity, low probability) interactions as a thread to introduce a vast variety of networks from proteins to economics and ecosystems.

    3. Science Matters: Humanities As Complex Systems, World Scientific Publishing Company Next Article Bookmark and Share

      Summary: All earnest and honest human quests for knowledge are efforts to understand Nature, which includes both human and nonhuman systems, the objects of study in science. Thus, broadly speaking, all these quests are in the science domain. The methods and tools used may be different; e.g. the literary people use mainly their bodily sensors and their brain as the information processor, while natural scientists may use, in addition, measuring instruments and computers. All these activities could be viewed in a unified perspective: they are scientific developments at varying stages of maturity.

    4. Computational Complexity: A Modern Approach, Cambridge University Press Next Article Bookmark and Share

      Summary: This beginning graduate textbook describes both recent achievements and classical results of computational complexity theory. Requiring essentially no background apart from mathematical maturity, the book can be used as a reference for self-study for anyone interested in complexity, including physicists, mathematicians, and other scientists, as well as a textbook for a variety of courses and seminars. More than 300 exercises are included with a selected hint set.

    5. Adaptive Networks: Theory, Models and Applications, Springer Next Article Bookmark and Share

      Description:
      With adaptive, complex networks, the evolution of the network topology and the dynamical processes on the network are equally important and often fundamentally entangled. Recent research has shown that such networks can exhibit a plethora of new phenomena which are ultimately required to describe many real-world networks. Some of those phenomena include robust self-organization towards dynamical criticality, formation of complex global topologies based on simple, local rules, and the spontaneous division of "labor" in which an initially homogenous population of network nodes self-organizes into functionally distinct classes. These are just a few. This book is a state-of-the-art survey of those unique networks. In it, leading researchers set out to define the future scope and direction of some of the most advanced developments in the vast field of complex network science and its applications.

  20. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. Equilibrium Selection via Adaptation: Using Genetic Programming to Model Learning in a Coordination Game, Shu-Heng Chen, John Duffy, Chia-Hsuan Yeh, 2009/06/01, The Electronic Journal of Evolutionary Modeling and Economic Dynamics, available online June 2009, DOI: NA
      2. Experimental Analysis of Self-organizing Team's Behaviors, Jing Lia, Yuejin Zhou, 2009/06/08, Expert Systems with Applications, Available online 8 June 2009, DOI: 10.1016/j.eswa.2009.05.084
      3. Phishing Still A Mystery To Most Web Users: Vast Majority Of Surfers Fail To Spot The Tell-Tale Signs, I. Williams, 2009/06/11, vnunet.com
      4. Universal driving structure of self-sustained oscillatory complex networks, Xuhong Liao, Weiming Ye, Xiaodong Huang, Qinzhi Xia, Xuhui Huang, Pengfei Li, Yu Qian, Xiaoqing Huang, Gang Hu, 2009/06/12, arXiv:0906.2356
      5. Are Changes In Earth's Main Magnetic Field Induced By Oceans' Circulation?, 2009/06/15, ScienceDaily & Institute of Physics
      6. Magnetic Sensors Attract Attention: Chemical-Induced Switching Of Polymer Magnetism Achieved At Room Temperature, 2009/06/15, Innovations-report
      7. Brain Energy Use Key To Understanding Consciousness, 2009/06/16, ScienceDaily & Yale University
      8. The Dawn Of Quantum Applications, 2009/06/16, ScienceDaily & ICT Results
      9. Beggar Thy Neighbor? The In-State, Out-Of-State, And Aggregate Effects Of R&D Tax Credits, D. J. Wilson, May 2009, Online 2009/05/06, The Review of Economics and Statistics, DOI: 10.1162/rest.91.2.431
      10. Schooling Externalities, Technology, And Productivity: Theory And Evidence From U.S. States, S. Iranzo, G. Peri, May 2009, Online 2009/05/06, The Review of Economics and Statistics, DOI: 10.1162/rest.91.2.420

    2. Conference Announcements Next Article Bookmark and Share

      1. 17th Intl Workshop on Nonlinear Dynamics of Electronic Systems (NDES 2009), Rapperswil, Switzerland, 09/06/21-24
      2. First Latin American Conference on Computing and Philosophy, Mexico City, Mexico, June 22-23, 2009
      3. Emergence in Chemical Systems, , Anchorage, Alaska, 09/06/22-26
      4. From Systemic Thinking to Systems Design and Systems Practice, Xanthi, Greece, 09/06/24-27
      5. International Conference on Computational Aspects of Social Networks - CASoN 2009, Fontainebleau, France, 09/06/24-27
      6. CCSA 2009 The 3rd International Conference on Complex Systems and Applications, University of Le Havre, France. 09/06/29-07/02
      7. ICALP 2009: 36th International Colloquium on Automata, Languages and Programming , Rhodes, Greece, 09/07/05-12
      8. 7th Intl Conf on Computing, Communications and Control Technologies: CCCT 2009, Orlando, Florida, USA. 09/07/10-13
      9. Complex Systems and Social Simulations, Budapest, Hungary, 09/07/13-24
      10. Second International Workshop on Nonlinear Dynamics and Synchronization (INDS'09), Klagenfurt, Austria, 09/07/20-21
      11. Third Annual French Complex Systems Summer School, Lyon and Paris, France, 09/07/20-08/14.
      12. The 19th Annual Intl Conf Society for Chaos Theory in Psychology & Life Sciences , Milwaukee, WI USA, 09/07/23-25
      13. 2009 Intl Conf of the System Dynamics Society, Albuquerque, New Mexico, 09/07/26-30
      14. Swarm Cognition Workshop, Amsterdam, The Netherlands, 09/07/29
      15. 5th Intl Conf on Fractals and Dynamic Systems in Geoscience, Townsville, Australia, 09/08/13-14
      16. EULAKS Summer School, Mexico City, Mexico, 09/08/17-30
      17. 2nd International Workshop on Guided Self-Organisation (GSO-2009), Leipzig, Germany, 09/08/18-20
      18. Mathematical Models in Ecology and Evolution 2009, Bristol, UK, 09/09/10-11
      19. Darwin Meets von Neumann: European Conference on Artificial Life 2009, Budapest, Hungary, 09/09/13-16
      20. IEEE International Conference on Self-Adaptive and Self-Organizing Systems , San Francisco, California, 09/09/14-18
      21. 6th Conference of the European Social Simulation Association, Guilford, UK, 09/09/14-18
      22. 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
      23. International Workshop on Natural Computing, Himeji, Japan, 09/09/23-25
      24. The 2009 International Conference on Adaptive & Intelligent Systems (ICAIS'09), Klagenfurt, Austria, 09/09/24-26
      25. Complexity Theories of Cities have come of Age, Delft Netherlands, 09/09/24-27
      26. IC3K 2009 - Int'l Joint Conf. on Knowledge Discovery, Knowledge Engineering and Knowledge Management, Madeira, Portugal, 09/10/6-8
      27. Systems Chemistry II: Evolution and Systems, Balatonfüred/Lake Balaton, Hungary, 09/10/18-23
      28. Natural and Biomimetic Mechanosensing, Dresden, Germany, 09/10/26-28
      29. The 11th International Symposium on Stabilization, Safety, and Security of Distributed Systems (SSS 2009) , Lyon, France, 09/11/03-06
      30. International Conference on Intelligent Networking and Collaborative Systems (INCoS 2009) , Barcelona, Spain, 09/11/4-6
      31. the 9th Asia-Pacific Complex Systems Conference Complex'09 How to Manage Complexity? , Tokyo, Japan, 09/11/4-7
      32. CAS in the Natural and Social Sciences, AAAI Fall Symposium Arlington, VA, USA, 09/11/5-7
      33. Ninth International Conference on Epigenetic Robotics: Modeling Cognitive Development in Robotic Systems, Venice, Italy, 09/11/12-14
      34. 1st Global Peter F. Drucker Forum, ‘Managing the Future’, Vienna, Austria, 09/11/19-20
      35. 9th International Conference on Intelligent Systems Design and Applications, Pisa, Italy, 09/11/30-12/02
      36. World Congress on Nature & Biologically Inspired Computing (NaBIC 2009), Coimbatore, India, 09/12/9-11
      37. 5th Biennial Convention about the philosophical, epistemological, and methodological implications of the Theory of Complexity, Havana, Cuba, 10/01/6-8
      38. 2nd International Conference on Agents and Artificial Intelligence (ICAART 2010), Valencia, Spain, 10/01/22-24

    3. Webcast Announcements Next Article Bookmark and Share

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

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

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

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

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

    4. Other Announcements Bookmark and Share

      • PhD studentships at the Institute of Complex Systems Simulation, Southampton University, UK.
        There are 10 fully funded 4-year EPSRC PhD studentships available every year. We expect to admit a cohort of at least 20 students per year. Applications for October 2009 are invited now.
        http://www.icss.soton.ac.uk/
      • Workshop Invitation
        Prof. Helen Cooper (Chester University) and Prof. Robert Geyer (Lancaster University) are organising a 2 day workshop funded by the European Science Foundation (ESF) entitled 'Can Complexity Improve European Health Policy?'
        The purpose of the workshop is to bring together 20-25 leading academics and practitioners throughout Europe (the ESF requires that attendees be based in a EU memberstate) for an intense period of discussion and interaction to examine the potential of complexity theory and its applications to improve European health systems and policy and explore the potential for further European research projects.
        The workshop will be held from 23-25 September 2009 at Lancaster University. The ESF will pay travel and accommodation expenses. The workshop themes and structure are available on the workshop website: http://www.lancs.ac.uk/fass/politics/event/2876
        If you are interested in attending please contact the workshop organiser Emilie Secker e.e.secker@lancaster.ac.uk
        Sincerely, Helen Cooper and Robert Geyer

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