Complexity Digest 2002.21

27-May-2002

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Content

  1. A Reconstruction of the Initial Conditions of the Universe by Optimal Mass Transportation, arXiv
  2. Did an Impact Trigger the Dinosaurs' Rise?, Science
    1. Ascent of Dinosaurs Linked to an Iridium Anomaly at the Triassic-Jurassic Boundary, Science
  3. Sea Level Is Rising: Do We Know Why?, PNAS
    1. Twentieth Century Sea Level: An Enigma, PNAS
  4. A Hidden Arabidopsis Emerges Under Stress, Science
  5. Cooperativity Between Bacterial Chemotaxis Receptors, PNAS
    1. Collaborative Signaling By Mixed Chemoreceptor Teams In Escherichia coli, PNAS
  6. Staying Healthy Amidst Bacterial 'Overkill', Harvard University Gazette
  7. Is Face Processing Species-Specific During the First Year of Life?, Science
    1. Instructed Learning In The Auditory Localization Pathway Of The Barn Owl, Nature
    2. What Songbirds Teach Us About Learning, Nature
  8. Consciousness Based on Wireless?, Wired News
  9. Thinking About the Brain, arXiv
  10. Bell, Torvalds Usher Next Wave Of Supercomputing
    1. Gas-Filled Chip Bids to Outshine a Computer, Science
  11. Chaotic Synchronization Via Minimum Information Transmission, arXiv
  12. Identity and Search in Social Networks, Science
    1. Classification of Scale Free Networks, arXiv
    2. Simple Models Of Small World Networks With Directed Links, arXiv
    3. How Structure Affects Power-Law Behavior, arXiv
    4. Epidemics And Immunization In Scale-Free Networks, arXiv
    5. Pattern Detection in Complex Networks: Correlation Profile of the Internet, arXiv
  13. Myhrvold's Exponential Economy, TechnologyReview
  14. Corporate Research: Japan Asks Why More Yen Don't Yield More Products, Science
  15. Shrinking Fuel Cells Promise Power in Your Pocket, Science
    1. Biofuel Cells, Science
    2. The Battery: Not Yet a Terminal Case, Science
  16. Formation of a Matter-Wave Bright Soliton, Science
  17. Stephen Wolfram: What Kind Of Science Is This?, Nature
    1. The Next Newton?, Salon
  18. Paleontologist, Author Gould Dies At 60, Harvard University Gazette
  19. Complex Challenges: Global Terrorist Networks
    1. The Army's New Killer App, BusinessWeek Online
    2. Digital Warriors: Artificial Intelligence May Help Spot Future Terrorism Attacks, ABC News
    3. Putting the Pieces Together, Darwin Mag, 02/02/01
  20. Links & Snippets
    1. Other Publications
    2. Webcast Announcements
    3. Conference Announcements

  1. A Reconstruction of the Initial Conditions of the Universe by Optimal Mass Transportation, arXiv Next Article Bookmark and Share

    Abstract: Reconstructing the density fluctuations in the early Universe that evolved into the distribution of galaxies we see today is a challenge of modern cosmology [ref.]. An accurate reconstruction would allow us to test cosmological models by simulating the evolution starting from the reconstructed state and comparing it to the observations. Several reconstruction techniques have been proposed [8 refs.], but they all suffer from lack of uniqueness because the velocities of galaxies are usually not known. Here we show that reconstruction can be reduced to a well-determined problem of optimization, and present a specific algorithm that provides excellent agreement when tested against data from N-body simulations. By applying our algorithm to the new redshift surveys now under way [ref.], we will be able to recover reliably the properties of the primeval fluctuation field of the local Universe and to determine accurately the peculiar velocities (deviations from the Hubble expansion) and the true positions of many more galaxies than is feasible by any other method.

  2. Did an Impact Trigger the Dinosaurs' Rise?, Science Next Article Bookmark and Share

    Summary: A huge asteroid or comet ended the 135-million-year reign of the dinosaurs when it hit Earth 65 million years ago. Now on page 1305, a group of researchers suggests that an impact also triggered the final rise of dinosaurs to dominance 200 million years ago. Proving that an impact is a two-edged sword will depend on demonstrating that a large body hit Earth at the very geologic instant that the dinosaurs' reptilian competitors abruptly died away and meat-eating dinosaurs came into their own.

    1. Ascent of Dinosaurs Linked to an Iridium Anomaly at the Triassic-Jurassic Boundary, Science Next Article Bookmark and Share

      Excerpts: Analysis of tetrapod footprints and skeletal material from more than 70 localities in eastern North America shows that large theropod dinosaurs appeared less than 10,000 years after the Triassic-Jurassic boundary (...), synchronous with a terrestrial mass extinction. This extraordinary turnover is associated with an iridium anomaly (...) suggesting that a bolide impact was the cause. Eastern North American dinosaurian diversity reached a stable maximum less than 100,000 years after the boundary, marking the establishment of dinosaur-dominated communities that prevailed for the next 135 million years.


  3. Sea Level Is Rising: Do We Know Why?, PNAS Next Article Bookmark and Share

    Excerpts:   The gradual rise of sea level is one of the most troubling aspects of global change, especially because it is likely to accelerate in the future as global warming progresses. (...) Two processes are involved: an increase of the mass of water in the oceans (the eustatic component), derived largely from the melting of ice on land, and an increase of the volume of the ocean without change in mass (the steric component), largely caused by the thermal expansion of ocean water. Neither of these components is understood fully (...).

    1. Twentieth Century Sea Level: An Enigma, PNAS Next Article Bookmark and Share

      Excerpt:  Melting of polar ice sheets at the upper limit of the Intergovernmental Panel on Climate Change estimates could close the gap, but severe limits are imposed by the observed perturbations in Earth rotation. Among possible resolutions of the enigma are: a substantial reduction from traditional estimates (including ours) of 1.5-2 mm/y global sea level rise; a substantial increase in the estimates of 20th century ocean heat storage; and a substantial change in the interpretation of the astronomic record.


  4. A Hidden Arabidopsis Emerges Under Stress, Science Next Article Bookmark and Share

    Summary: The common mustard plant (Arabidopsis thaliana) may look drab, but results published online by Nature this week show that it has a surprising ability to break out into new forms--some of them weird and exotic--when it is under stress. The report's authors suggest that this ability may play an important role in evolution, possibly allowing organisms to store up alternative survival strategies and express them only when environmental challenges go beyond the normal range.

     


  5. Cooperativity Between Bacterial Chemotaxis Receptors, PNAS Next Article Bookmark and Share

    Excerpts: Cellular sensory transduction pathways typically begin at the cell surface where membrane-spanning receptors detect an external stimulus, propogate a transmembrane signal, and regulate cytoplasmic signaling events. In many pathways these cell surface receptors have been thought to function independently, without significant interactions between receptor molecules. (...).By contrast, receptor-receptor interactions are known to play an important role in certain other receptor classes, including tyrosine kinase receptors. (...)

    In vitro and in vivo studies of attractant regulation of receptor-coupled kinase activity have uncovered cooperative interactions between receptors.


    1. Collaborative Signaling By Mixed Chemoreceptor Teams In Escherichia coli, PNAS Next Article Bookmark and Share

      Collaborative Signaling By Mixed Chemoreceptor Teams In Escherichia coli, Peter Ames, Claudia A. Studdert, Rebecca H. Reiser, John S. Parkinson, PNAS 2002 99: 7060-7065

  6. Staying Healthy Amidst Bacterial 'Overkill', Harvard University Gazette Next Article Bookmark and Share

    Excerpts: Today, however, despite vast advances in medical knowledge and technology, drug-resistant strains of tuberculosis, staphylococcus, pneumococcus, and other germs are appearing with increasing frequency. (...)

    "The development of antibiotics has stalled and the bugs are getting smarter," said Li, who also advised Thompson on the book. "The advent and discovery of antibiotics created a false sense of security and optimism." (...)

    Thompson's book, which is aimed at the general public, presents this background and couples it with an extensive array of practical suggestions on how to live smarter with germs.


  7. Is Face Processing Species-Specific During the First Year of Life?, Science Next Article Bookmark and Share

    Excerpts:  Between 6 and 10 months of age, the infant's ability to discriminate among native speech sounds improves, whereas the same ability to discriminate among foreign speech sounds decreases. Our study aimed to determine whether this perceptual narrowing is unique to language or might also apply to face processing. We tested discrimination of human and monkey faces by 6-month-olds, 9-month-olds, and adults, using the visual paired-comparison procedure. Only the youngest group showed discrimination between individuals of both species; older infants and adults only showed evidence of discrimination of their own species.

    1. Instructed Learning In The Auditory Localization Pathway Of The Barn Owl, Nature Next Article Bookmark and Share

      Excerpts: A bird sings and you turn to look at it - a process so automatic it seems simple. But is it? Our ability to localize the source of a sound relies on complex neural computations that translate auditory localization cues into representations of space. In barn owls, the visual system is important in teaching the auditory system how to translate cues. This example of instructed plasticity is highly quantifiable and demonstrates mechanisms and principles of learning that may be used widely throughout the central nervous system.


    2. What Songbirds Teach Us About Learning, Nature Next Article Bookmark and Share

      Excerpts: (...) like humans, birds must hear the sounds of adults during a sensitive period, and must hear their own voice while learning to vocalize. With the discovery and investigation of discrete brain structures required for singing, songbirds are now providing insights into neural mechanisms of learning. Aided by a wealth of behavioural observations and species diversity, studies in songbirds are addressing such basic issues in neuroscience as perceptual and sensorimotor learning, developmental regulation of plasticity, and the control and function of adult neurogenesis.


  8. Consciousness Based on Wireless?, Wired News Next Article Bookmark and Share

    Excerpts:  McFadden, author of Quantum Evolution, argues that human consciousness is actually the brain's electromagnetic field interacting with its circuitry.

    Nerve cells firing simultaneously create powerful waves in the field, which in turn cause other neurons to spark. In this way, the electromagnetic field works as a sort of wireless processor, combining the most important information from the hard wiring of the brain into a wireless signal, which is then transmitted back to the brain as conscious thought.


  9. Thinking About the Brain, arXiv Next Article Bookmark and Share

    Abstract: We all are fascinated by the phenomena of intelligent behavior, as generated both by our own brains and by the brains of other animals. As physicists we would like to understand if there are some general principles that govern the structure and dynamics of the neural circuits that underlie these phenomena. At the molecular level there is an extraordinary universality, but these mechanisms are surprisingly complex. This raises the question of how the brain selects from these diverse mechanisms and adapts to compute "the right thing" in each context. One approach is to ask what problems the brain really solves. There are several examples - from the ability of the visual system to count photons on a dark night to our gestalt recognition of statistical tendencies toward symmetry in random patterns - where the performance of the system in fact approaches some fundamental physical or statistical limits. This suggests that some sort of optimization principles may be at work, and there are examples where these principles have been formulated clearly and generated predictions which are confirmed in new experiments; a central theme in this work is the matching of the coding and computational strategies of the brain to the statistical structure of the world around us. Extension of these principles to the problem of learning leads us into interesting theoretical questions about how to measure the complexity of the data from which we learn and the complexity of the models that we use in learning, as well as opening some new opportunities for experiment. This combination of theoretical and experimental work gives us some new (if still speculative) perspectives on classical problems and controversies in cognition.

  10. Bell, Torvalds Usher Next Wave Of Supercomputing Next Article Bookmark and Share

    Excerpts: Unlike many supercomputers which use specialized components and can fill entire buildings, the Green Destiny fits 240 server blades from RLX Technologies Inc. into a server rack that would fit inside most closets. The blades use low-powered processors from Transmeta Corp. and a version of the Linux operating system.(...)

    "Because of the substantial difference in power dissipation, the Transmeta processor requires no active cooling, whereas a Pentium 4 (and most definitely an IA-64) processor can heat to the point of failure if its not aggressively cooled," he wrote.


    1. Gas-Filled Chip Bids to Outshine a Computer, Science Next Article Bookmark and Share

      Summary: Want to take in all the sights of London without wearing out your shoes or make all those sales visits in the shortest possible distance? Let some glowing helium gas do the walking. Researchers are taking a crack at the classic "traveling salesman problem" in an entirely new way: using a lab on a chip.


  11. Chaotic Synchronization Via Minimum Information Transmission, arXiv Next Article Bookmark and Share

    Abstract: Chaotic synchronization is generally extremely sensitive to the presence of noise and other inference in the channel. Is this sensitivity a fundamental property of chaotic synchronization or is it related to the choice of synchronization method and can be suppressed by a modification of the method? If the answer is positive, then what are the relationships between the properties of a dynamical system and the level of noise at which the suppression of this sensitivity is still possible? What are particular methods to achieve synchronization that is stable to the presence of noise? In this paper we present the analysis of this issue from the standpoint of the information theory. The fundamental reason of this sensitivity is the fact that chaotic signal contains information and that requires a certain minimal threshold signal-to-noise ratio for this information to be transmitted. Only in this case high quality synchronization is achievable and only if the required information is transmitted (coded) optimally. Otherwise the threshold level can be much higher.

  12. Identity and Search in Social Networks, Science Next Article Bookmark and Share

    Excerpt: Social networks have the surprising property of being "searchable": Ordinary people are capable of directing messages through their network of acquaintances to reach a specific but distant target person in only a few steps. We present a model that offers an explanation of social network searchability in terms of recognizable personal identities: sets of characteristics measured along a number of social dimensions. Our model defines a class of searchable networks and a method for searching them that may be applicable to many network search problems (...).

    1. Classification of Scale Free Networks, arXiv Next Article Bookmark and Share

      Abstract: While the emergence of a power law degree distribution in complex networks is intriguing, the degree exponent is not universal. Here we show that the betweenness centrality displays a power law distribution with an exponent eta which is robust and use it to classify the scale-free networks. We have observed two universality classes with eta approx 2.2 and 2.0, respectively. Real world networks for the former are the protein interaction networks, the metabolic networks for eukaryotes and bacteria, and the co-authorship network, and those for the latter one are the Internet, the world-wide web, and the metabolic networks for archaea. Distinct features of the mass-distance relation, generic topology of geodesics and resilience under attack of the two classes are identified. Various model networks also belong to either of the two classes while their degree exponents are tunable.


    2. Simple Models Of Small World Networks With Directed Links, arXiv Next Article Bookmark and Share

      Abstract: We investigate the effect of directed short and long range connections in a simple model of small world network. Our model is such that we can determine many quantities of interest by an exact analytical method. We calculate the function V(T), defined as the number of sites affected up to time T when a naive spreading process starts in the network. As opposed to shortcuts, the presence of un-favorable bonds has a negative effect on this quantity. Hence the spreading process may not be able to affect all the network. We define and calculate a quantity named the average size of accessible world in our model. The interplay of shortcuts, and unfavorable bonds on the small world properties is studied.

    3. How Structure Affects Power-Law Behavior, arXiv Next Article Bookmark and Share

      Abstract: Complex systems contain a lot of individuals and some interactions between them. The structure of interactions can be modeled to be a network: nodes represent individuals and links to be interaction between two individuals. This paper tries to investigate how structure of interactions in the system will affect the power-law behaviors based on the BS co-evolution model from points of system size, the density of connectivity and the ways of connectivity of the interaction network. The current experiments show that small size, high density of connectivity and random connected way will weaken the power-law distribution.


    4. Epidemics And Immunization In Scale-Free Networks, arXiv Next Article Bookmark and Share

      Abstract: In this chapter we want to provide a review of the main results obtained in the modeling of epidemic spreading in scale-free networks. In particular, we want to show the different epidemiological framework originated by the lack of any epidemic threshold and how this feature is rooted in the extreme heterogeneity of the scale-free networks' connectivity pattern.

    5. Pattern Detection in Complex Networks: Correlation Profile of the Internet, arXiv Next Article Bookmark and Share

      Abstract: A general scheme for detecting and analyzing topological patterns in complex networks is presented. To this end one first generates a randomized version of a given network which preserves some of its low-level topological properties, such as e.g. connectivities of individual nodes, and does not allow for multiple edges between the same pair of nodes. One then concentrates only on those higher level properties of the complex network in question that significantly deviate from the above null model, and, therefore, likely reflect its basic design principles and/or evolutionary history. Our general methods allow us to measure the correlation profile of the Internet quantifying correlations between connectivities of neighboring nodes. This profile was found to be qualitatively different from that previously reported for molecular networks. It was further demonstrated that the level of clustering of the Internet is very sensitive to both the connectivity distribution and its correlation profile and is some 60 percent higher than in a random network preserving both these properties.


  13. Myhrvold's Exponential Economy, TechnologyReview Next Article Bookmark and Share

    Excerpts:  The cost of shipping was dramatically affected by the railroad, but we've hunted up all the records on what was the cost of shipping a ton of grain, all throughout the 19th century. It improved by about a factor of ten. The price of steel improved by maybe a factor of three. All of those things went through a price/performance ratio change. But typically less than a factor of 10. Whereas from the first transistor to today, the improvement was something like a factor of a billion. (...)

  14. Corporate Research: Japan Asks Why More Yen Don't Yield More Products, Science Next Article Bookmark and Share

    Summary: The importance of research is an article of faith within Japanese industry and government. But recent news is straining that belief in the power of R&D. Government officials are puzzling over an equation that shows a simultaneous rise in research spending and a decline in global competitiveness

  15. Shrinking Fuel Cells Promise Power in Your Pocket, Science Next Article Bookmark and Share

    Summary: The future of consumer electronics hinges on finding compact, long-lasting sources of power. As devices become ever smaller and more ravenous for electricity, they have already outstripped technology's ability to keep pace. The first story in this special Focus package explores micro fuel cells, small devices thatconvert chemical fuels such as hydrogen or methanol directly into electrical power. Micro fuel cells stack up well against batteries on paper, but they still face engineering, financial, and even political hurdles. The second story discusses how makers of conventional batteries might adapt their products to compete in the power struggle.

    1. Biofuel Cells, Science Next Article Bookmark and Share

      Summary: Researchers are looking to create rice-grain-sized fuel cells that run on chemicals inside our bodies. Such cells, they say, could someday power futuristic implantable sensors that monitor everything from blood glucose levels in diabetics to chemicals that signal the onset of heart disease or cancer.


    2. The Battery: Not Yet a Terminal Case, Science Next Article Bookmark and Share

      Summary: It seems inevitable that fuel cells will soon take over many of the jobs that batteries now do (see p. 1222), and increasingly photovoltaic cells and even clockwork are muscling in on their territory. But the chemists and materials scientists who work in the field say they still have a few tricks up their sleeves. Complex ceramic electrodes and solid electrolytes made from conducting polymers may keep rivals at bay for years yet.

       


  16. Formation of a Matter-Wave Bright Soliton, Science Next Article Bookmark and Share

    Abstract: We report the production of matter-wave solitons in an ultracold lithium-7 gas. The effective interaction between atoms in a Bose-Einstein condensate is tuned with a Feshbach resonance from repulsive to attractive before release in a one-dimensional optical waveguide. Propagation of the soliton without dispersion over a macroscopic distance of 1.1 millimeter is observed. A simple theoretical model explains the stability region of the soliton. These matter-wave solitons open possibilities for future applications in coherent atom optics, atom interferometry, and atom transport.

  17. Stephen Wolfram: What Kind Of Science Is This?, Nature Next Article Bookmark and Share

    Excerpt: It is a call for researchers to turn away from calculus and other conventional mathematical tools and to embrace instead simple 'rules' that can be applied to generate patterns of astounding variety and complexity. Hidden within these patterns, Wolfram asserts, are the keys to understanding a multitude of biological and physical phenomena from the shapes of leaves to the structure of space-time itself. He suggests that his work will change almost every branch of the natural sciences, and even social sciences and the arts.

    1. The Next Newton?, Salon Next Article Bookmark and Share

      Excerpt: But computer technology allows more than programming languages; to Wolfram, it makes a fundamentally new kind of science possible, just as the development of telescope technology made astronomy possible and microscope technology took biology beyond mere taxonomy. "Computers are not just limited to working out the consequences of mathematical equations," he says, whether they be Feynman diagrams or your checking account statements. Rather, studying the behavior of even the simplest programs reveals extremely complex behavior, as anyone who's tried to debug a piece of software knows.


  18. Paleontologist, Author Gould Dies At 60, Harvard University Gazette Next Article Bookmark and Share

    Excerpts: Stephen Jay Gould, (...), died Monday morning (May 20) in Manhattan of metastasized lung cancer.

    Gould, along with Niles Eldredge, a paleontologist at New York's Museum of Natural History, developed an evolutionary theory called "punctuated equilibrium," where long periods of evolutionary stability are broken by shorter spurts of evolutionary change, perhaps sparked by external events such as climate change or the impact of a comet. The theory contrasts with more traditional evolutionists, who believe evolution is a slow, steady process occurring at a nearly constant rate.


  19. Complex Challenges: Global Terrorist Networks Next Article Bookmark and Share

    Excerpts: To start the games, players create their own customized soldier characters, then guide them through boot camp and various missions -- kind of like The Sims but with barracks, M-16s, and stints in Fort Leavenworth military prison. The players can also participate in Web-based team missions with other potential recruits from all over the country. "We want to teach kids what it's really like to be a soldier," says Casey Wardynski, director of the Army's Office of Economic & Manpower Analysis.

    1. The Army's New Killer App, BusinessWeek Online Next Article Bookmark and Share

      Excerpts: Sifting through piles of intelligence data to spot a terrorist attack may require the use of artificially intelligent computer systems. But don't expect these smart systems to provide blanket protection in an uncertain world.

      (...) the crush of raw information is enormous and the accuracy of A.I. systems is unknown.

      "There is a ton of information out there," says Robert Steele, chief executive officer of Open Source Solutions, an intelligence analysis organization in Oakton, Va. "But the intelligence community collects less than five percent of it," says Steele.


    2. Digital Warriors: Artificial Intelligence May Help Spot Future Terrorism Attacks, ABC News Next Article Bookmark and Share

      Excerpts: Could we have anticipated the terrorist attacks? Maybe. But managing knowledge has been a challenge in the corporate world for decades. Now, once-rival intelligence and police agencies around the globe need to share and analyze information. Fast.

      Remember the children's game of Telephone, where players whispered a message around the room until the original phrases were often mangled beyond recognition?


    3. Putting the Pieces Together, Darwin Mag, 02/02/01 Next Article Bookmark and Share

      Well, for generations, military, intelligence and law enforcement agents have played their own game of telephone, with important messages misconstrued or sometimes lost.


  20. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. A Statistical Measure of Complexity. Ricardo Lopez-Ruiz, Hector Mancini, Xavier Calbet. arXiv
      2. Bootstrapping Structure into Language: Alignment-Based Learning. Menno M. van Zaanen. arXiv
      3. Interference of Quantum Market Strategies. E. W. Piotrowski, J. Sladkowski, J. Syska. arXiv.
      4. Big Bucks for MIT Brain Center, Andrew Lawler, Science 2002 296: 1217
      5. Endangered Species Act: Cherished Concepts Faltering in the Field, Ben Shouse, Science 2002 296: 1219
      6. A Small-Systems Approach To Motor Pattern Generation, Michael P. Nusbaum, Mark P. Beenhakker, Nature 417, 343 - 350 (2002)
      7. Neurology: An Ancient Sensory Organ In Crocodilians, Daphne Soares, Nature 417, 241 - 242 (2002) doi:10.1038/417241a, Waiting alligators can detect silent ripples in the water even in total darkness.
      8. Cosine Tuning Minimizes Motor Errors, Emanuel Todorov, Neural Computation. 2002;14:1233-1260
      9. Learning Curves for Gaussian Process Regression: Approximations and Bounds, Peter Sollich,Anason Halees, Neural Computation. 2002;14:1393-1428 

    2. Webcast Announcements Next Article Bookmark and Share

      1. Understanding Complex Systems: Symposium Complexity in Physical and Biological Structures, Medicine & Ecology, Department of Physics, University of Illinois at Urbana-Champaign, 02/05/13-15
      2. The Body is a Machine, the World is a System: The Convergence of Engineering and the Life Sciences, Cornell Society of Engineers Conference, 02/04/11-13
      3. Powell Voices Support for Scientific Contributions to U.S. Foreign Policy, 139th Annual Meeting of the National Academy of Sciences, Washington, D.C., 02/04/30
      4. Invisible Advantage Webcast, Cambridge, Massachusetts, 02/05/15, Jon Low, Center for Business Innovation Senior Research Fellow, will preview his new book, Invisible Advantage
      5. Introducing Complexity, The University of Liverpool ,02/04/24, (mp3 web-cast and audio download, contributed by Carlos Gershenson)
      6. The Adaptive Enterprise in Action, The Center for Business Innovation, online until June 2002
      7. Protecting the Homeland Through Executive Leadership And Effective Communication, Princeton, NJ, 02/04/23
      8. Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998

       


    3. Conference Announcements Bookmark and Share

      1. 2002 World Wireless Congress, San Francisco, USA, 02/05/28-31
      2. International Conference Ethics and Technological Complexity, Louvain-la-Neuve, 02/05/29-31
      3. International Conference SocioPhysics, ZIF - Bielefeld, Germany, 02/06/06-09
      4. International Conference on Complex Systems (ICCS2002), Nashua, NH, 02/06/9-14
      5. Sitges Conference "Statistical Mechanics of Complex Networks", Sitges, Spain, 02/06/10-14
      6. 2nd International Conference on Development and Learning (ICDL'02), Cambridge, Massachusetts USA, 02/06/12-15
      7. AES 22nd International Conference on Virtual, Synthetic And Entertainment Audio, Espoo, Finland, 02/06/15-17
      8. Complex Systems: Control and Modeling Problems, Samara, Russia, 02/06/17
      9. 3rd European Interdisciplinary School on Nonlinear Dynamics for System and Signal Analysis EUROATTRACTOR2002, Warsaw, 02/06/18-27
      10. International Conference: Emergence in Chemical Systems, University of Alaska Anchorage, 02/06/20-23
      11. Plexus Conference - Diffusing Innovations: Learning With Everett Rogers & Each Other, Borgess Navigation Center Kalamazoo, Michigan USA , 02/06/21-22
      12. Let's Face Chaos Through Nonlinear Dynamics, Maribor, Slovenia, 02/06/30 - 07/14
      13. 7th International Conference on Music Perception & Cognition - ICMPC7, Sydney, 02/07/17-21
      14. 20th System Dynamics Conference: Organizational Change Dynamics - Understanding Systems, Managing Transformation, Palermo, Italy, 02/07/28-08/01
      15. Complexity and Philosophy, Norwood, Massachusetts, USA, 02/07/29-30
      16. Workshop On Fluctuations Chaos And Complexity In Multistable Systems, Lancaster University, 02/08/01-07
      17. 12th Ann Intl Conf Society For Chaos Theory in Psychology & Life Sciences: Chaos and Complexity in a Changing World, Portland, OR, USA, 02/08/01-04
      18. International Workshop on Meta-Synthesis and Complex Systems, Shanghai, China, 02/08/07-08
      19. Econophysics Conference, Denpasar, Bali, Indonesia, 02/08/29-31
      20. Self-Organisation and Evolution of Social Behaviour, Monte Verità, Switzerland, 02/09/08-13
      21. Complex Systems (CS02) Complexity with Agent-Based Modeling, Chuo University, Tokyo, Japan, 02/09/10-12
      22. 3rd Intl NAISO Symposium on Engineering Of Intelligent Systems (EIS 20020), Malaga, Spain, 02/09/24-27
      23. Seminar on Non-equilibrium Phenomena and Phase Transitions in Complex Systems, Avila, Spain, 02/09/24-28.
      24. ACRI 2002, 5th Intl Conf on Cellular Automata for Research and Industry, Geneva, Switzerland, 02/10/09-11 
      25. Dynamical Systems Methods for Advanced Diagnosis and Prognosis, 39th Annual Technical Meeting of the Society of Engineering Science, University Park, Pennsylvania, 02/10/13-16
      26. 4th Asia-Pacific Conference on Simulated Evolution And Learning (SEAL'02), 9th International Conference on Neural Information Processing (ICONIP'02), International Conference on Fuzzy Systems and Knowledge Discovery (FSKD'02), Singapore, 02/11/18-22
      27. Managing the Complex IV, Naples , FL, Early December 2002
      28. Artificial Life VIII, UNSW, Sydney, Australia, 02/12/09-13
      29. Hawaii International Conference On System Sciences (HICSS-36), Big Island, Hawaii, 03/01/06-09
      30. 21st ICDE World Conference on Open Learning and Distance Education, Hong Kong, 03/06/01-05

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