Complexity Digest 2002.20

20-May-2002

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Content

  1. Life and the Evolution of Earth's Atmosphere, Science
  2. Odds On Aliens: One In Three Planets Like Earth Probably Harbour Life, Nature Science Update
    1. Does The Rapid Appearance Of Life On Earth Suggest That Life Is Common In The Universe?, Astrobiology
    2. Deep Life in the Slow, Slow Lane, Science
  3. Ecosystem Health: The State Of The Planet, Nature
    1. Stability in Real Food Webs: Weak Links in Long Loops, Science
    2. From Elton to Mathematics and Back Again, Science
  4. Roots And Promises Of Chemical-Based Computing, Biosystems
  5. Does Complexity Constrain Organelle Evolution?, Trends in Plant Science
  6. 'Screen Language': The New Currency for Learning, HBSWK Pub
  7. A Man Who Would Shake Up Science, NYTimes
  8. Entropy And Complexity Of Finite Sequences As Fluctuating Quantities, BioSystems
  9. Conduction Pathways In Microtubules, Biological Quantum Computation, And Consciousness, BioSystems
    1. Our Mind Electric?, Alphagalileo
    2. Evidence For An Electromagnetic Field Theory Of Consciousness, J. Consciousness Studies
    3. Difficulties With The Electromagnetic Field Theory Of Consciousness, J. Consciousness Studies
  10. Distributions of Money in Model Markets of Economy, arXiv
  11. Dynamical Model Of Sequential Spatial Memory: Winnerless Competition Of Patterns, arXiv
  12. Genes For A Better Brain Found: Discovery Surprises Neuroscientists, Harvard University Gazette
  13. Neurons Keep Cells In Rhythm, BioMedNet
  14. Some Language Experts Think Humans Spoke First With Gestures, NYTimes
  15. The Irrelevance of Turing Machines to AI, University of Birmingham
  16. Mating Instabilities Lead to Sympatric Speciation, arXiv
  17. Tornado Alley, USA: New Map Defines Nation's Twister Risk, Science News
    1. Finding the What, When, Where and Why of the Supertwister, NYTimes
  18. September's Science: Shutdown Of Airlines Aided Contrail Studies, Science News
  19. Complex Challenges: Global Terrorist Networks
    1. U.S. Intercepting Messages Hinting At A New Attack, NYTimes
    2. Clues Surfaced Before Sept. 11, AP/NYTimes
    3. Senate's Shelby Blasts FBI on Flight School Memo, Reuters/NYTimes
    4. Survival In An Insecure World, Scientific American
  20. Links & Snippets
    1. Other Publications
    2. Webcast Announcements
    3. Course Announcements
    4. Conference Announcements

  1. Life and the Evolution of Earth's Atmosphere, Science Next Article Bookmark and Share

    Excerpts: Harvesting light to produce energy and oxygen (photosynthesis) is the signature of all land plants. This ability was co-opted from a precocious and ancient form of life known as cyanobacteria. Today these bacteria, as well as microscopic algae, supply oxygen to the atmosphere (...). Under the more dim light of a young sun cooler than today's, certain groups of anaerobic bacteria may have been pumping out large amounts of methane, thereby keeping the early climate warm and inviting. The evolution of Earth's atmosphere is linked tightly to the evolution of its biota.

  2. Odds On Aliens: One In Three Planets Like Earth Probably Harbour Life, Nature Science Update Next Article Bookmark and Share

    Excerpts: If there are other planets like Earth out there, at least one in three probably harbours life (...). If life can arise on planets unlike ours, then the odds on finding life are even more favourable. (...) despite our sample of habitable planets being but one, we are not as ignorant about life elsewhere as it might seem.

    According to the earliest fossil records, life took no more than about half a billion years to gain a foothold, once the planetary conditions were amenable. This rapidity tells us that the probability of life developing on an Earth-like planet is high.


    1. Does The Rapid Appearance Of Life On Earth Suggest That Life Is Common In The Universe?, Astrobiology Next Article Bookmark and Share

      Abstract: It is sometimes assumed that the rapidity of biogenesis on Earth suggests that life is common in the Universe. Here we critically examine the assumptions inherent in this if-life-evolved-rapidly-life-must-be-common argument. We use the observational constraints on the rapidity of biogenesis on Earth to infer the probability of biogenesis on terrestrial planets with the same unknown probability of biogenesis as the Earth. We find that on such planets, older than ~ 1 Gyr, the probability of biogenesis is > 33% at the 95% confidence level. This (...) does not necessarily mean that life is common in the Universe.


    2. Deep Life in the Slow, Slow Lane, Science Next Article Bookmark and Share

      Excerpts: Microbial life may seem infinitely adaptable and durable, but microbiologists and geologists probing the most voluminous part of the biosphere--the deep subsurface--are finding it slow going

      Life is a hardy sort. In recent years, microbes have been reported in the most unlikely nooks and crannies of the planet living under incredible conditions: in mine drainage with a pH of 1; (...) ; in cloud droplets; and, albeit in suspended animation, preserved for more than 250 million years in ancient brine pockets in subterranean salt.


  3. Ecosystem Health: The State Of The Planet, Nature Next Article Bookmark and Share

    Excerpt: More than 2,000 experts will be involved in a four-year effort to survey the health of the world's ecosystems and threats posed by human activities. Virginia Gewin profiles the Millennium Ecosystem Assessment. (ˇK}

    Instead of evaluating how ecosystems respond to just one environmental concern, such as climate change, they were talking about providing a complete planetary health check, determining the impacts of changes in land use, loss of biodiversity, the application of agricultural fertilizers, and many other factors - a truly colossal endeavour.


    1. Stability in Real Food Webs: Weak Links in Long Loops, Science Next Article Bookmark and Share

      Excerpts: Increasing evidence that the strengths of interactions among populations in biological communities form patterns that are crucial for system stability requires clarification of the precise form of these patterns, how they come about, and why they influence stability. We show that in real food webs, interaction strengths are organized in trophic loops in such a way that long loops contain relatively many weak links. (...) Loop-weight analysis could be a useful tool for exploring the structure and organization of complex communities.


    2. From Elton to Mathematics and Back Again, Science Next Article Bookmark and Share

      Excerpt: We live in a time when biodiversity is being lost at an alarming rate. There is growing pressure for community ecologists to deliver on basic questions about the consequences of biodiversity loss for ecological stability. But the true complexity of natural systems is overwhelming. Representing their dynamics and understanding the underlying processes is extraordinarily difficult; predicting their future states is even harder. Ecologists try to cope with this complexity by thinking in terms of food webs


  4. Roots And Promises Of Chemical-Based Computing, Biosystems Next Article Bookmark and Share

    Abstract: General principles of information processing by chemical-based biomolecular systems (pseudobiological information processing paradigm) are discussed. These principles include very large scale parallelism of information processing, high behavioral complexity, complementarity of information features, self-organization, and multilevel architecture. Chemical-based information processing devices using these principles seem to be able to solve effectively problems of high computational complexity.

  5. Does Complexity Constrain Organelle Evolution?, Trends in Plant Science Next Article Bookmark and Share

    Excerpts: The evolution of eukaryotes was punctuated by invasions of the bacteria that have evolved to mitochondria and plastids. Yet, having evolved as free-living organisms, they were at first poorly adapted organelles. Although mitochondria and plastids have integrated within the physiology of eukaryotic cells, this integration has probably been constrained by the high level of complexity of their bacterial ancestors and the inability of gradual evolutionary processes to drastically alter complex systems. Here, I review complex processes that directly involve translation of plastid mRNAs and how they could constrain transfer to the nucleus of the genes encoding them.

  6. 'Screen Language': The New Currency for Learning, HBSWK Pub Next Article Bookmark and Share

    Excerpts: Kids are on to something big, says John Seely Brown. (...) In the past year and a half, the knowledge expert and chief scientist of Xerox Corporation said he's gained a new respect-indeed an awe-for screen language. And what is screen language? It's simply the vernacular of digital culture, the way technology is increasingly put in the service of human imagination in sophisticated ways. For the shorthand version, just think of any teenager's natural affinity for instant messaging, video games, movies, open source, and eBay.

  7. A Man Who Would Shake Up Science, NYTimes Next Article Bookmark and Share

    Excerpt: Some images on the back jacket of Stephen Wolfram's 1,197-page tome, "A New Kind of Science," are familiar: a splash of liquid, jets of gas, sea anemone, ancient mosaics and mollusk shells. But others become understandable only after working through ideas in this much-awaited book: spindly sketches of leaves and snowflakes, a baroque lacework of light, schematic diagrams that waver under the gaze.

    Many of these images, created by Mr. Wolfram, are ghostlike reductions of familiar objects, skeletal representations of processes that may lie beneath natural forms.


  8. Entropy And Complexity Of Finite Sequences As Fluctuating Quantities, BioSystems Next Article Bookmark and Share

    Abstract: The paper is devoted to the analysis of digitized sequences of real numbers and discrete strings, by means of the concepts of entropy and complexity. Special attention is paid to the random character of these quantities and their fluctuation spectrum. As applications, we discuss neural spike-trains and DNA sequences. We consider a given sequence as one realization of finite length of certain random process. The other members of the ensemble are defined by appropriate surrogate sequences and surrogate processes. (...)

  9. Conduction Pathways In Microtubules, Biological Quantum Computation, And Consciousness, BioSystems Next Article Bookmark and Share

    Excerpts: Technological computation is entering the quantum realm, focusing attention on biomolecular information processing systems such as proteins, as presaged by the work of Michael Conrad. Protein conformational dynamics and pharmacological evidence suggest that protein conformational states fundamental information units (`bits') in biological systems are governed by quantum events, and are thus perhaps akin to quantum bits (`qubits') as utilized in quantum computation. `Real time' dynamic activities within cells are regulated by the cell cytoskeleton, particularly microtubules (MTs) which are cylindrical lattice polymers of the protein tubulin. (...) The pathways within tubulin match helical patterns in the microtubule lattice structure, which lend themselves to topological quantum effects resistant to decoherence.

    1. Our Mind Electric?, Alphagalileo Next Article Bookmark and Share

      Excerpts: (...) every time a nerve fires, the electrical activity sends a signal to the brainˇ¦s electromagnetic (em) field. But unlike solitary nerve signals, information that reaches the brainˇ¦s em field is automatically bound together with all the other signals in the brain. (...)  the brainˇ¦s em field is consciousness. The brainˇ¦s electromagnetic field is not just an information sink; it can influence our actions, pushing some neurons towards firing and others away from firing.

      The theory explains why conscious actions feel so different from unconscious ones ˇV it is because they plug into the vast pool of information held in the brainˇ¦s electromagnetic field (...).


    2. Evidence For An Electromagnetic Field Theory Of Consciousness, J. Consciousness Studies Next Article Bookmark and Share

      Abstract: The human brain consists of approximately 100 billion electrically active neurones that generate an endogenous electromagnetic (em) field (...). Synchronous firing has previously been demonstrated to correlate with awareness and perception, indicating that perturbations to the brainˇ¦s em field also correlate with awareness. The brainˇ¦s em field represents an integrated electromagnetic field representation of distributed neuronal information and has dynamics that closely map to those expected for a correlate of consciousness. I propose that the brainˇ¦s em information field is the physical substrate of conscious (...). It thus places consciousness within a secure physical framework and provides a route towards constructing an artificial consciousness.


    3. Difficulties With The Electromagnetic Field Theory Of Consciousness, J. Consciousness Studies Next Article Bookmark and Share

      Abstract: The authorˇ¦s version of the electromagnetic field theory of consciousness is stated briefly and then three difficulties with the theory are discussed. The first (...) how to measure accurately enough the spatial properties of the fields which are proposed to be conscious and then how to generate these artificially, so that the theory can be tested. The second difficulty (...) is that present measurements seem to show a non-constant relationship between brain-generated electromagnetic fields and sensation. The third difficulty involves the basic question of whether consciousness per se has any direct effect on the brain.

       


  10. Distributions of Money in Model Markets of Economy, arXiv Next Article Bookmark and Share

    Abstract: We study the distributions of money in a simple closed economic system for different types of monetary transactions. We know that for arbitrary and random sharing but locally conserving money transactions, the money distribution goes to the Gibb's distribution of statistical mechanics. We then consider the effects of savings, etc. and see how the distribution changes. We also propose a new model where the agents invest equal amounts of money in each transaction. We find that for short time-periods, the money distribution obeys a power-law with an exponent very close to unity, and has an exponential tail; after a very long time, this distribution collapses and the entire amount of money goes to a tiny fraction of the population.

  11. Dynamical Model Of Sequential Spatial Memory: Winnerless Competition Of Patterns, arXiv Next Article Bookmark and Share

    Abstract: We introduce a new biologically-motivated model of sequential spatial memory which is based on the principle of winnerless competition (WLC). We implement this mechanism in a two-layer neural network structure and present the learning dynamics which leads to the formation of a WLC network. After learning, the system is capable of associative retrieval of pre-recorded sequences of spatial patterns.

  12. Genes For A Better Brain Found: Discovery Surprises Neuroscientists, Harvard University Gazette Next Article Bookmark and Share

    Excerpts: Genes that have allowed brains to become larger and more complicated have been found and cloned (...).

    One of the genes has been guiding the formation of nervous systems since the first fishlike animals with backbones appeared on Earth. The other evolved about the time that the brains of these vertebrates got larger than those of birds.

    In the discovery process, neuroscientists were surprised to learn that their theory about how central nervous systems (brains, spines, and eyes) develop in everything from mice to humans was wrong.


  13. Neurons Keep Cells In Rhythm, BioMedNet Next Article Bookmark and Share

    Excerpt: New evidence that neuronal signaling is critical to the function of a circadian clock "challenges" researchers to step outside an individual cell and explore how different components work together to establish an internal rhythm, says a leading researcher in the field.Organisms ranging from fungi, fruit flies and humans have a robust internal clock. Even when cut off from all external stimuli, such as light and temperature, they still exhibit circadian behavior. Although the level of complexity can vary tremendously (1,000s of neurons are involved in the human clock; a mere 10 pairs in the fruit-fly), the general "molecular theme" is well-conserved, says Todd Holmes, assistant professor of biology at New York University.

  14. Some Language Experts Think Humans Spoke First With Gestures, NYTimes Next Article Bookmark and Share

    Excerpts: Where language comes from remains one of human evolution's enduring puzzles. But in a new book, "From Hand to Mouth: The Origins of Language" (Princeton Univerity Press), Mr. Corballis pluckily takes a stand, arguing that speech was an ingenious innovation (...). Proposing that human ancestors made the switch from gestures to speech quite recently - he puts the date at around 50,000 years ago, a mere yesterday in evolutionary terms - Mr. Corballis believes that language itself, and the sophisticated mental capacities necessary to produce it, are far older.

  15. The Irrelevance of Turing Machines to AI, University of Birmingham Next Article Bookmark and Share

    Abstract: The common view that the notion of a Turing machine is directly relevant to AI is criticized. It is argued that computers are the result of a convergence of two strands of development with a long history: development of machines for automating various physical processes and machines for performing abstract operations on abstract entities, e.g. doing numerical calculations. Various aspects of these developments are analysed, along with their relevance to AI, and the similarities between computers viewed in this way and animal brains. This comparison depends on a number of distinctions: between energy requirements and information requirements of machines, between ballistic and online control, between internal and external operations, and between various kinds of autonomy and self-awareness. The ideas are all intuitively familiar to software engineers, though rarely made fully explicit. Most of this has nothing to do with Turing machines or most of the mathematical theory of computation. But it has everything to do with both the scientific task of understanding, modelling or replicating human or animal intelligence and the engineering applications of AI, as well as other applications of computers.

  16. Mating Instabilities Lead to Sympatric Speciation, arXiv Next Article Bookmark and Share

    Abstract: One of the most challenging issues of evolutionary biology concerns speciation, the emergence of new species from an initial one. The huge amount of species found in nature demands a simple and robust mechanism. Yet, no consensus has been reached concerning a reasonable disruptive selection mechanism that prevents mixing genes among the emerging species, especially when they live in sympatry. Usually it is assumed that females select males according to their displaying traits, but males perform no selection on female traits. However, recent experimental evidence accumulates towards the existence of male choice. Here we propose a robust mechanism for sympatric speciation, based on the assumption that sexual selection operates in two directions: selection of males by females and of females by males. Complex mating instabilities emerge, creating differential  fitness depending on the individuals displaying traits and preferences. When a secondary sexual trait is introduced in a population, due to mutations, the activation of previously neutral genes or due to a different perception of already existent displaying traits, sympatric speciation may result (together with a species recognition system) from a competitive exclusion principle. We suggest that potential candidates to test our theory could be yeasts.

  17. Tornado Alley, USA: New Map Defines Nation's Twister Risk, Science News Next Article Bookmark and Share

    Excerpt: Although scientists know nature's overall ingredients for tornadoes (...), mystery enshrouds the small-scale phenomena that cook up a twister. In fact, says Doswell, the real question is why there aren't more? Only a tiny fraction of the storms that occur each year produce tornadoes, and the ones that end up spawning damaging funnels aren't much different from those that don't. (...)

    While tornadoes are most common on the Great Plains and throughout the Mississippi River valley, they can occur almost anywhere in the United States.


    1. Finding the What, When, Where and Why of the Supertwister, NYTimes Next Article Bookmark and Share

      Excerpt: Although meteorologists have greatly improved their understanding of how certain conditions generate especially powerful thunderstorms and how these towering heat engines can spin out twisters, the experts have yet to figure out what ingredients spawn an F-5.

      "This is still fundamentally one of the things we can't predict," said Dr. Harold E. Brooks, a research meteorologist at the National Severe Storms Laboratory in Norman, Okla. "I'm not even sure we know what measurements we need to take to try to understand them."


  18. September's Science: Shutdown Of Airlines Aided Contrail Studies, Science News Next Article Bookmark and Share

    Excerpt: Immediately after four hijacked airliners slammed into New York's World Trade Center, the Pentagon, and a field in southwestern Pennsylvania, the Federal Aviation Administration shut down all U.S. commercial air traffic for 3 days. The unprecedented grounding of airliners enabled airports to step up security measures. At the same time, scientists stepped up to a unique opportunity to study the influence of high-flying aircraft on Earth's climate.

    One way that aircraft may affect climate is through their cloud like contrails, which appear behind jets flying at high altitude.


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

    1. U.S. Intercepting Messages Hinting At A New Attack, NYTimes Next Article Bookmark and Share

      Excerpts: American intelligence agencies have intercepted a vague yet troubling series of communications among Al Qaeda operatives over the last few months (...)

      But just as last summer's threats left counterterrorism analysts guessing about Al Qaeda's intentions, (...), the new interceptions are so general that they have left President Bush and his counterterrorism team in the dark about the time, place or method of what some officials refer to as a second-wave attack. As a result, the government is essentially limited to taking broad defensive measures.


    2. Clues Surfaced Before Sept. 11, AP/NYTimes Next Article Bookmark and Share

      Excerpt: Larry Johnson, deputy director of the State Department's office of counterterrorism in 1989-93, criticized Rice for discounting the possibility that a Sept. 11-type attack could have been foreseen.

      ``She's foolish in saying that. Intelligence analysts are paid to imagine the unimaginable. That information was in their files, and if they weren't imagining it, that is a failure of intelligence and a failure of imagination,'' he said.

      Another clue to Sept. 11 came in 2000, and it was partially a result of the 1995 Philippine investigation.


    3. Senate's Shelby Blasts FBI on Flight School Memo, Reuters/NYTimes Next Article Bookmark and Share

      Excerpts: In a 1996 confession a Pakistani, (...), said he planned to use his training from U.S. flight schools to fly a plane into CIA headquarters outside Washington or another federal building, the Times reported.

      And a report for the CIA released on Friday said in 1999 that bin Laden could crash a plane into the Pentagon, the CIA or the White House. The White House and other senior government officials have all said that before Sept. 11 it was never imagined that an attack might involve hijacked airliners.


    4. Survival In An Insecure World, Scientific American Next Article Bookmark and Share

      Excerpt: To defeat cyberterrorists, computer systems must be designed to work around sabotage. David A. Fisher's new programming language will help do just that. (...)

      "Easel allows us to simulate unbounded systems even when given incomplete information about their state," Fisher says. "So I can write programs that help control the power grid or help prevent distributed denial of service attacks" such as those that knocked out the CNN and Yahoo! Web sites a few years ago.


  20. Links & Snippets Next Article Bookmark and Share


    1. Other Publications Next Article Bookmark and Share

      20.1 Other Publications
      1. Broken Limits to Life Expectancy, Jim Oeppen and James W. Vaupel, Science May 10 2002: 1029-1031
      2. No More Surprises From Evanescent Squid, Adam Bostanci, Science May 10 2002: 1000-1001.
      3. Can You Predict The Unpredictable?, HBSWK Pub., 02/05/13, See also: Predicting the Unpredictable, Harvard Business Review
      4. Filling In Blanks: Automating The Restoration Of A Picture's Missing Pieces, Ivars Peterson, Science News, 02/05/11
      5. Unexpected Boost: A Superconductivity Killer's Silver Lining, Science News, 02/05/11, Among superconductors-materials able to conduct electricity without resistance-an effect that normally diminishes current-carrying ability surprisingly turns out to sometimes enhance it.
      6. Minimotor: Single Molecule Does Some Work, Science News, 02/05/11, A single molecule has performed mechanical work-pulling and releasing a cantilever tip-when exposed to light.
      7. Heavenly Taffy: Galaxies In Collision, Science News, 02/05/11, Astronomers have discovered a pair of colliding galaxies connected by a bridge of high-speed electrons and elongated magnetic field.
      8. Rethinking Green Consumerism, Jared Hardner and Richard Rice, Scientific American, May 2002, Buying green products won't be enough to save biodiversity in the tropics. A new plan for marketing conservation services may be the answer
      9. Fuzzy Rule-Based Mobility And Load Management For Self-Organizing Wireless Networks, J. Habetha, B. Walke, Intl. J. Wireless Info. Networks, 9 (2): 119-140, April 2002
      10. Complexity in Some Physical Systems. Ricardo Lopez-Ruiz. arXiv
      11. The Prospects for Mathematical Logic in the Twenty-First Century. Samuel R. Buss, Alexander S. Kechris, Anand Pillay, Richard A. Shore. arXiv
      12. Portfolio Allocation to Corporate Bonds with Correlated Defaults. Mark B. Wise and Vineer Bhansali. arXiv
      13. Spatial Patterns in Chemically and Biologically Reacting Flows. Emilio Hernandez-Garcia, Cristobal Lopez and Zoltan Neufeld. arXiv
      14. New Rocket Fuel? Solid Nitrogen Could Pack Double The Punch Of Existing Space Propellants, P. Ball, Nature Science Update, 14 May 2002
      15. No Love Nest For Rare Birds: World's Most Endangered Bird Puts Home Comforts Before Sex, Nature Science Update, J. Whitfield, 9 May 2002
      16. Gardens In Space: A Model Of A System For Growing Plants To Plan Biological Experiments In Space, E. Rolfe, European Space Agency, Alphagalileo, 13 May 2002
      17. Hierarchical Text Categorization Using Neural Networks, M. E. Ruiz, P. Srinivasan, Information Retrieval, 5 (1): 87-118, January 2002
      18. Europe In Disunion About Proposed Infectious Disease Center, J. Clayton, BioMedNet News, 3 May 2002
      19. Internet Connectivity For Ad Hoc Mobile Networks, Y. Sun, E. M. Belding-Royer & C. E. Perkins, Intl. J. Wireless Info. Networks, 9 (2): 75-88, April 2002

     


  21. Webcast Announcements Next Article Bookmark and Share

    20.2 Coming and Ongoing Webcasts

    1. New:  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
      Note: Complexity Digest recorded all presentations in mpeg4 (asf) format that can be played with Windows Media Player. The files on this site are higly compressed and therefore of marginal quality but suitable for modem connections. Better quality versions of the video clips (~50MB each) are available on request.
      For some of the talks we also have a downloadable audio version (mp3) available to make it possible to listen to the talks off-line with a portable mp3 player. From our own experience this mode of listening to a lecture is much more effective.
    2. New: 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

     


  22. Course Announcements Next Article Bookmark and Share

    20.3 Course Announcements

    1. Complexity, Chaos And Creativity, Masters Program Offered Through The Internet, The Academic Group 'Quadruple C' At The University Of Western Sydney
    2. Two Week Advanced Course and Supervised Study/Research in Complex Systems, July 2002, Cambridge, MA

      


  23. Conference Announcements Bookmark and Share

    A NAME=20.4>20.4 Conference Announcements 

    1. ˇ§Search Theory, Invented Nowˇ¨, New Horizons in Search Theory, 2nd Workshop, Newport, Rhode Island, 02/05/21-23
    2. 2002 World Wireless Congress, San Francisco, USA, 02/05/28-31
    3. International Conference Ethics and Technological Complexity, Louvain-la-Neuve, 02/05/29-31
    4. International Conference SocioPhysics, ZIF - Bielefeld, Germany, 02/06/06-09
    5. International Conference on Complex Systems (ICCS2002), Nashua, NH, 02/06/9-14
    6. Sitges Conference "Statistical Mechanics of Complex Networks", Sitges, Spain, 02/06/10-14
    7. 2nd International Conference on Development and Learning (ICDL'02), Cambridge, Massachusetts USA, 02/06/12-15
    8. AES 22nd International Conference on Virtual, Synthetic And Entertainment Audio, Espoo, Finland, 02/06/15-17
    9. Complex Systems: Control and Modeling Problems, Samara, Russia, 02/06/17
    10. 3rd European Interdisciplinary School on Nonlinear Dynamics for System and Signal Analysis EUROATTRACTOR2002, Warsaw, 02/06/18-27
    11. International Conference: Emergence in Chemical Systems, University of Alaska Anchorage, 02/06/20-23
    12. Plexus Conference - Diffusing Innovations: Learning With Everett Rogers & Each Other, Borgess Navigation Center Kalamazoo, Michigan USA , 02/06/21-22
    13. Let's Face Chaos Through Nonlinear Dynamics, Maribor, Slovenia, 02/06/30 - 07/14
    14. 7th International Conference on Music Perception & Cognition - ICMPC7, Sydney, 02/07/17-21
    15. 20th System Dynamics Conference: Organizational Change Dynamics - Understanding Systems, Managing Transformation, Palermo, Italy, 02/07/28-08/01
    16. Complexity and Philosophy, Norwood, Massachusetts, USA, 02/07/29-30
    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

    Complexity Digest is an independent publication available to organizations that may wish to repost ComDig to their own mailing lists. ComDig is published by Dean LeBaron and edited by Gottfried J. Mayer. For individual free e-mail subscriptions send requests to: subscriptions@comdig.org.

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