Complexity Digest 2002.04

28-Jan-2002

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Content

  1. Mammalian Cells Spin a Spidery New Yarn, Science
    1. Cow Used in Man-Made Spider Web, Wired News
    2. Spider Silk Fibers Spun from Soluble Recombinant Silk Produced in Mammalian Cells, Science
  2. Biotechs Fight Threat Of 'Superbugs', CNN
  3. Hasty Editing Linked To Cancer, Science Now
  4. The Economics Of Impatience, Nature
  5. Memories Bound: The Neuroscience Of Dreams, Trends in Cognitive Neurosciences
  6. A Computer Scientist Looks At Game Theory, arXiv
  7. Time-Of-Day As A Modulator Of Executive Response Control, Neuropsychologia
    1. Brain Function And Effects Of Shift Work, Neuropsychologia
  8. Every Curriculum Tells a Story, KurzweilAI.net
    1. The Elements of an Education, Science Book Report
  9. Star-Spangled Universe Dawned in Early Light, Science
  10. What Makes the Sun Flare, Wired News
  11. Turbulence And Thick Gas As A Possible Precursor To Galactic Evolution, Cornell Press Release
  12. Quantum Effects Of Gravity, Nature
    1. The Puny Force Follows the Pack, Science
    2. Quantum States Of Neutrons In The Earth's Gravitational Field, Nature
  13. Quantum Engine Blasts Past High Gear, Science
  14. Fuel Cells That Fit in a Laptop, Wired News
    1. Bush Trades Hybrid for Hydrogen Model, Science
  15. Microbes Use Mud to Make Electricity, Science
  16. Alien-Like Microbes Found Deep Underground, AP/CNN
  17. On Thickening Ice?, Science
    1. Positive Mass Balance of the Ross Ice Streams, West Antarctica, Science
  18. Europe GPS Plan Shelved, Wired
  19. Complex Challenges: Global Terrorist Networks
    1. Science, Terrorism, and Natural Disasters, Science
    2. "The CNN Effect": How 24-Hour News Coverage Affects Government Decisions and Public Opinion, Brookings/Harvard Forum
    3. The Chip On China's Shoulder, NYTimes
    4. Ashcroft Defends Detainees' Treatment, CNN
    5. Camp X-Ray, When Is A War Prisoner Not A POW?, Time
  20. Links & Snippets
    1. Dean LeBaron's Virtual Book Party!
    2. Other Papers
    3. Conference Announcements
  1. Mammalian Cells Spin a Spidery New Yarn, Science Next Article Bookmark and Share

    Excerpt: Not even the priciest threads from New York's fashion district can match the wonders of a simple spider web. Spider dragline silk is stronger than Kevlar and stretches better than nylon, a combination of properties seen in no other fiber. That's had entrepreneurs and scientists scheming for more than 100 years to find a way either to farm spiders or, lately, to transfer their silkmaking genes into organisms that can produce enough silk to be useful. None have succeeded--until now.

    1. Cow Used in Man-Made Spider Web, Wired News Next Article Bookmark and Share

      A Montreal biotech company and the U.S. Army say they've developed the first man-made spider silk, made from mammal cell cultures of a cow, with properties similar to the real thing.

      Nexia's BioSteel fibers will be used for commercial products such as medical sutures, biodegradable fishing lines and soft body armor. (...)

      Researchers have successfully produced spider silk proteins in bacteria and yeast in the past, but haven't been able to spin fibers with properties comparable to a spider's, according to Nexia.


    2. Spider Silk Fibers Spun from Soluble Recombinant Silk Produced in Mammalian Cells, Science Next Article Bookmark and Share

      Excerpt: Spider silks are protein-based "biopolymer" filaments or threads secreted by specialized epithelial cells as concentrated soluble precursors of highly repetitive primary sequences. Spider dragline silk is a flexible, lightweight fiber of extraordinary strength and toughness comparable to that of synthetic high-performance fibers. We sought to "biomimic" the process of spider silk production by expressing in mammalian cells the dragline silk genes (...). The spun fibers were water insoluble with a fine diameter (...) and exhibited toughness (...) comparable to those of native dragline silks but with lower tenacity.


  2. Biotechs Fight Threat Of 'Superbugs', CNN Next Article Bookmark and Share

    Excerpts: Genetic maps of many disease-causing viruses and bacteria are now available to anyone with an Internet connection. Techniques that can make pathogens more deadly are publicized in scientific journals.

    Some scientists fear that information made public with the most altruistic of intentions may also help terrorists create biological weapons laced with genetically modified superbugs. Such germs are created by splicing drug-resistant genes into diseases normally defeated by vaccines. (...)

    It's never been easier to tweak a bug's genes to make it antibiotic-resistant or more potent, (...).


  3. Hasty Editing Linked To Cancer, Science Now Next Article Bookmark and Share

    Excerpts: Until now, researchers thought of errors in DNA as the all-powerful arbiters of cancer. But a new study of a type of nerve cancer shows that DNA's message-bearer, RNA, can also lead cells astray. A last-minute edit to the RNA code that controls a tumor-suppressing protein tips the scales in favor of tumor growth.

    (...) some copies of the messenger RNA (mRNA) responsible for building neurofibromin had been altered. A single nucleotide had been changed in the mRNAs' sequences, producing a genetic "stop" sign that prevented them from building neurofibromin (...).


  4. The Economics Of Impatience, Nature Next Article Bookmark and Share

    Excerpts: In experiments, animals often prefer smaller, immediate rewards over larger rewards that are deferred - thus failing to maximize their total gain. Many people exhibit similar behavior.

    The irresistible cravings of addicts provide an extreme example of short-term behavior with adverse long-term consequences. The field of study known as experimental and behavioral economics indicates, however, that some of the principles that underpin addictive behavior are quite common (...)

    One explanation for this is that, throughout evolutionary history, future rewards have been uncertain.


  5. Memories Bound: The Neuroscience Of Dreams, Trends in Cognitive Neurosciences Next Article Bookmark and Share

    Contributing Editor's Note: What is the the role of dreams in the neural basis of fundamental cognitive activities such as memory consolidation? In an effort to address this issue, the author represents the dream-based memory consolidation hypothesis as discussed in three recent articles. Neural activity associated with the encoding of novel stimuli works in two main sleep stages- REM (rapid eye-movement) and Non-REM. But some questions remain unanswered as the author says 'An unresolved mystery of neuroscience is how disparate episodic memories are bound in long-term memory without displacing previously acquired knowledge.'

    Excerpts: For example, the duration and frequency of REM, but not Non-REM sleep, increases after an animal or human subject receives training on a task but returns to baseline once a task is mastered. Finally, when people are awoken during REM or Non-REM sleep, they describe dreams and exhibit cognitive styles indicative of specific memory processes. During REM sleep people report hyper-associative and emotional dreams, which however are lacking in episodic content. During Non-REM sleep (...)dreams include references to episodes from waking life.
    >Sleep research suggests that neural activity associated with Non-REM sleep, which originates in the hippocampus, reflects this relay from the hippocampus to the neocortex.


  6. A Computer Scientist Looks At Game Theory, arXiv Next Article Bookmark and Share

    Excerpt: (...) Perhaps less obvious is the interplay between game theory and work in distributed computing. At the surface, both areas are interested in much the same problems: dealing with systems where there are many agents, facing uncertainty, and having possibly different goals. In practice, however, there has been signiffcant difference in emphasis in the two areas. In distributed computing, the focus has been on problems such as fault tolerance, scalability, and proving correctness of algorithms; in game theory, the focus has been on strategic concerns (that is, playing so as to optimize returns, in light of the preferences of other agents). In this paper, I hope to make the case that each area has much to learn from the other. I focus on three particular topics: (a) the representation of games (and, in particular, the knowledge and uncertainty of players in a game), (b) strategic concerns vs. fault tolerance, and (c) specification of mechanisms.

  7. Time-Of-Day As A Modulator Of Executive Response Control, Neuropsychologia Next Article Bookmark and Share

    Abstract: Here, we examined performance variability among healthy young adults as a function of time-of-day on a clinical task that is sensitive to absent-minded slips in brain-injured groups. We found significantly higher error rates at 1 pm and 7 pm compared with 1 am and 7 pm [probably should read 7am], and significant correlations between errors and two subjective sleepiness scales. No circadian modulation of the more routine aspects of the task was observed suggesting some specificity to the effect. Given evidence that the circadian cycle differentially affects different brain regions (...) examining variation over the course of the day can prove a useful additional methodology in this area.

    1. Brain Function And Effects Of Shift Work, Neuropsychologia Next Article Bookmark and Share

      Abstract: A significant percentage of shift workers report discomfort or health problems (...). Apart from social implications, the issue has medical and scientific relevance, with evidence suggesting that the circadian rhythm phases are neither equivalent nor interchangeable with respect to function and performance. Shift work may affect the gastrointestinal and cardiovascular functions, alter the hormonal and sleepiness cycles, favor sleep disturbances of medical relevance, interfere with behavior and social life and increase the risk of accidents (e.g. road accidents). Basic and clinical research should take into account (...) working schedule in inappropriate phases of the circadian cycles (...).


  8. Every Curriculum Tells a Story, KurzweilAI.net Next Article Bookmark and Share

    Excerpt: The SCC [Story Centered Curriculum, Ed.] will work in any complex learning environment as long as there are mentors available and realistic roles to learn. A great deal of work is required to build a realistic environment. This environment would be on the web and can be used in a live on the ground school or on line. In either case teamwork and mentoring as well as the successive evaluation of work products that are the result of activities are the sine qua non of the SCC

    1. The Elements of an Education, Science Book Report Next Article Bookmark and Share

      Excerpt: There he encounters the museum's giant periodic table, which covers an entire wall at the top of the stairs. He realizes at once that the table enables him to order and organize the knowledge gained in his basement lab and from visits to his uncle's factories. For the first time, Sacks was able to feel not only the richness and diversity of the chemical world, but also science's capacity for giving structure to the results of experience.


  9. Star-Spangled Universe Dawned in Early Light, Science Next Article Bookmark and Share

    Excerpt: A few hundred million years after the big bang, the universe blazed with the most violent burst of star formation it has ever experienced. Since then, the rate of star formation has decreased, and the current activity is just a fizzle compared with the natal fireworks. That new theory, to be published in an upcoming issue of The Astrophysical Journal, contradicts earlier ones, which suggested that star formation gradually increased until a "baby boom" took place some 4 billion years after the big bang before dropping off again.

  10. What Makes the Sun Flare, Wired News Next Article Bookmark and Share

    Excerpt: Past thinking viewed the sun as a pretty simple entity, but the Stanford study -- by delving under the sun's surface -- has revealed that it is a lot more complex.

    "It's like there is a huge dynamo operating in the sun. There are different levels of rotation, magnetized plasma being pushed past itself, rotations occurring at different rates and at different latitudes," (...)

    (...) the storage of magnetic structures probably occurs at the bottom of the sun's convection zone (...) which extends 124,000 miles beneath the sun's surface.


  11. Turbulence And Thick Gas As A Possible Precursor To Galactic Evolution, Cornell Press Release Next Article Bookmark and Share

    Excerpt: (...) In a huge river of primordial hydrogen flowing from the neighboring Magellanic louds into our own Milky Way galaxy, astronomers have discovered the first evidence of turbulence and concluded that the invisible, hot mass of gas surrounding our galaxy is much thicker than physicists previously thought.Galactic turbulence, an ingredient in cosmic cloud and star formation, has never before been seen in starless areas of the cosmos. "What causes turbulence in a star-free cosmic stream is unclear, but this finding could be important in understanding the cosmic-cloud and star-formation processes," (...)

    Contributing Editor's Note: In addition to the multiple scales present within turbulent dynamics, the phenomenon of turbulence itself occurs in systems at many scales. It is important not only in astronomy, but also in oceanography, etc.


  12. Quantum Effects Of Gravity, Nature Next Article Bookmark and Share

    Excerpts: The effects of gravity and quantum mechanics rarely overlap because of the different scales involved. An experiment with ultracold neutrons has now been able to probe both simultaneously.

    The visible effects of gravity usually occur at large scales: (...) By contrast, the effects of quantum mechanics - one of the great successes of twentieth-century physics - are usually only observable at the atomic scale. In the quantum realm, the gravitational force is so weak that it is difficult to observe quantum effects caused by gravity.


    1. The Puny Force Follows the Pack, Science Next Article Bookmark and Share

      Excerpts: If the neutrons behaved classically, they could inhabit virtually any energy level, and hence no matter how high the ceiling, some would reach the detector. But the researchers found that when the ceiling was roughly 15 micrometers or less above the surface, no neutrons got through. They concluded that the energy levels of the neutrons were quantized. "This is the first experiment that proves the phenomenon exists," says Nesvizhevsky.

      Such a result has long been predicted by physicists-indeed (...)


    2. Quantum States Of Neutrons In The Earth's Gravitational Field, Nature Next Article Bookmark and Share

      Excerpts: The discrete quantum properties of matter are manifest in a variety of phenomena. (...) Here we report experimental evidence for gravitational quantum bound states of neutrons. The particles are allowed to fall towards a horizontal mirror which, together with the Earth's gravitational field, provides the necessary confining potential well. Under such conditions, the falling neutrons do not move continuously along the vertical direction, but rather jump from one height to another, as predicted by quantum theory.


  13. Quantum Engine Blasts Past High Gear, Science Next Article Bookmark and Share

    Except: Scully found that in theory he could take the hot exhaust from one kind of heat engine and drive a laser with it. Lasers work by storing energy in the internal quantum energy states of atoms or molecules and then releasing the energy in the form of photons. But heat engines generally ignore the internal states and instead harness the thermal motions of atoms and molecules in the "working fluid" (for example, the hot gas made by burning gasoline) as it expands and moves pistons to turn a crankshaft.

  14. Fuel Cells That Fit in a Laptop, Wired News Next Article Bookmark and Share

    Excerpts: While many micro fuel cell companies have yet to show any real product, Smart Fuel Cell has been rapidly advancing its micro fuel cell line. In late January, the Bavarian company will roll out a pilot production of its first portable methanol fuel cells (...).

    Recharging the battery will only involve replacing the liquid fuel and won't require shutting down the computer. "The content of our prototype cartridge holds 120 ml methanol and generates about 150 Wh -- enough to power a 15W notebook computer for 10 hours,"(...).


    1. Bush Trades Hybrid for Hydrogen Model, Science Next Article Bookmark and Share

      Excerpt: Secretary of Energy Spencer Abraham announced last week that he is junking the Clinton Administration's effort to build super efficient cars in favor of building vehicles powered by pollution-free hydrogen fuel cells. Abraham released no budget details of the new program, but analysts say most of the old program's research efforts will continue. The deadlines for getting a car on the road, however, have been pushed way back.


  15. Microbes Use Mud to Make Electricity, Science Next Article Bookmark and Share

    Excerpt: Self-recharging bacterial batteries that clean up organic pollution as they generate electricity? Sounds more like science fiction than science. But on page 483, microbiologists report coming one step closer to making microbial fuel cells a reality: They harnessed bacteria to generate electricity from underwater sediments. The microbes make excess electrons that they stick directly to graphite wires, which in turn send current to a second wire much like a car battery does. For fuel, the bacteria use organic material in the sea floor.

    Excerpts: Energy in the form of electricity can be harvested from marine sediments by placing a graphite electrode (the anode) in the anoxic zone and connecting it to a graphite cathode in the overlying aerobic water. (...) This finding not only provides a method for extracting energy from organic matter, but also suggests a strategy for promoting the bioremediation of organic contaminants in subsurface environments.


  16. Alien-Like Microbes Found Deep Underground, AP/CNN Next Article Bookmark and Share

    Excerpt: Scientists plumbing the bubbling, black depths of a geothermal hot spring in Idaho have discovered a unique community of microbes that thrive without sunlight or oxygen.

    The organisms are similar to life as it might exist on Mars and other planets, the researchers suggested.

    The one-celled organisms, known as Archaea, grow by consuming hydrogen that is produced by hot water reacting with bedrock 600 feet (180 meters) below the Beaverhead Mountains. They produce tiny amounts of methane as a byproduct of their weird metabolism.


  17. On Thickening Ice?, Science Next Article Bookmark and Share

    Excerpts: Joughin and Tulaczyk also highlight the great complexity of the system. They studied ice streams that feed the floating Ross Ice Shelf (...). Reduced ice-stream flow into the ice shelf may allow it to thin and float free of the impeding grounding points, perhaps rejuvenating the ice streams and thus the ice shelf. Failure of this complex feedback path may lead to ice-shelf shrinkage or loss, with implications for formation of oceanic deep waters and thus for large-scale climate.

    1. Positive Mass Balance of the Ross Ice Streams, West Antarctica, Science Next Article Bookmark and Share

      Excerpts: We find strong evidence for ice-sheet growth (+26.8 gigatons per year), in contrast to earlier estimates indicating a mass deficit ( 20.9 gigatons per year). Average thickening is equal to ~25% of the accumulation rate, with most of this growth occurring on Ice Stream C. Whillans Ice Stream, which was thought to have a significantly negative mass balance, is close to balance, reflecting its continuing slowdown. The overall positive mass balance may signal an end to the Holocene retreat of these ice streams.


  18. Europe GPS Plan Shelved, Wired Next Article Bookmark and Share

    Editor's Note: There seems to be a pattern in how the current US government interacts with other agents in the global system of governments: After standing basically alone in international negotiations ranging from global warming to international law, Geneva convention, and treaties on biological weapons, the US government now makes it clear that it doesn't want to share its monopoly of power about knowing one's location. It is hard to see how independent nations could tolerate in the long run that a single superpower has the means to tell everyone where on the world they are located; and in the case of a conflict deny or manipulate that information. It is not hard to predict that a natural response would be that the Europeans -discouraged from building their own GPS system- would look for alternative location providers such as China or Russia.

    Excerpts: Exasperated European officials say U.S. pressure appears to have torpedoed a $3 billion project to build a European version of the U.S. global positioning system (...).

    The proposed system, dubbed Galileo, was intended to give Europeans more autonomy, both industrially and militarily. That's no small concern, since the United States can selectively block access to GPS, as it has during the military campaign in Afghanistan.

    Also, European plans to develop a rapid-reaction military force will become much more credible with their own GPS in military operations.


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

    1. Science, Terrorism, and Natural Disasters, Science Next Article Bookmark and Share

      Excerpts: Modern industrial societies, because they are complex arrangements optimized for efficiency, tend to be quite resistant to random failure; but careful studies of various networks, including subsystems of our own efficient industrial economy, reveal a troublesome feature. The Internet exemplifies the pattern: It consists of multiple nodes (...). The organization is scale-free, because added nodes connect preferentially to others that are already well connected. Such networks are robust with respect to random failure. But they are highly vulnerable to targeted disruption of the most highly connected nodes.

    2. "The CNN Effect": How 24-Hour News Coverage Affects Government Decisions and Public Opinion, Brookings/Harvard Forum Next Article Bookmark and Share

      Excerpts: (...)examine the so-called "CNN Effect"-the impact of 24-hour-a day, live television coverage broadcast from around the world by all-news cable channels

      Policymakers acknowledge that they often first learn of new trouble spots around the globe from cable channel coverage. World leaders often direct messages to each other through such news channels, as President Bush has done in the current crisis. And videotaped statements by Osama bin Laden are an example of how America's enemies can take advantage of the all-news channels to spread propaganda against the United States.


    3. The Chip On China's Shoulder, NYTimes Next Article Bookmark and Share

      Excerpts: Even in the chat rooms, the initial tone of xing zai le huo (gloating at the pain of others) faded as the death toll grew.

      Yet there is something going on here, something more complex - and, to me, far more worrying - than simply schadenfreude at seeing America humbled. It is a rapidly increasing Chinese nationalism.

      This nationalism has deep roots in China and results in part from the battering that the country suffered at foreign hands over the last 200 years.


    4. Ashcroft Defends Detainees' Treatment, CNN Next Article Bookmark and Share

      Excerpt: "Secretary of Defense [Donald] Rumsfeld and others insist that these are not prisoners of war and there, frankly, he's wrong," said Kenneth Roth, executive director of Human Rights Watch. "The Geneva Conventions require all prisoners to be treated as presumptive prisoners of war until a competent tribunal determines otherwise."(...)

      But Attorney General John Ashcroft defended his classification of the detainees as "war criminals." "These people are terrorists, they haven't fought like soldiers, they don't wear uniforms, they don't reveal themselves," Ashcroft said Sunday.


    5. Camp X-Ray, When Is A War Prisoner Not A POW?, Time Next Article Bookmark and Share

      Excerpts: Some (...) presumably thought they were part of the Afghan army. Are they POWs? Washington says no, because the Taliban had no clear chain of command and was not a legitimate government. That may be so; unfortunately, as Amnesty International has pointed out, under the Geneva Convention the Pentagon has no business making such a determination. Those who fall into the enemy's hands are entitled to POW status until a "competent tribunal" has determined their status. In the case of those in Cuba, that hasn't happened.


  20. Links & Snippets Next Article Bookmark and Share

    1. Dean LeBaron's Virtual Book Party! Next Article Bookmark and Share

      a. Dean LeBaron's Virtual Book Party!
      You are invited to a first... a virtual global book party - one week of online presence beginning January 23, 2002. We'll be celebrating the publication of 3 books by John Wiley & Sons, New York during the month of December 2001:

      The party is happening right now at www.deanlebaron.com/bookparty

      b. Webcast from Joint International SFI/SINP Workshop Dynamics of Networks and Spatially Extended Systems, Kolkata (Calcutta), India, 02/01/21-23, at http://www.comdig.de/DNSES

      c. Center for Business Innovation's Future Scan: Five Emerging Trends, Karina Funk, CBI, 02/01/15 (

      Note: Includes web-cast and presentation slides
      Webcast:Joint Intl SFI/SINP Workshop Dynamics of Networks and Spatially Extended Systems, Calcutta
    2. Other Papers Next Article Bookmark and Share

      1. Dynamics and Constancy in Cortical Spatiotemporal Patterns of Orientation Processing, Dahlia Sharon, Amiram Grinvald, Science 2002 295: 512-515
      2. Tuning Order in Cuprate Superconductors, Subir Sachdev and Shou-Cheng Zhang, Science 2002 295: 452
      3. Antiferromagnetic Order Induced By An Applied Magnetic Field In A High-Temperature Superconductor, B Lake, H M Rønnow, N B Christensen, G Aeppli, K Lefmann, D F Mcmorrow, P Vorderwisch, P Smeibidl, N Mangkorntong, T Sasagawa, M Nohara, H Takagi & T E Mason, Nature 415, 299 - 302 (2002)
      4. Shear Instabilities In Granular Flows, D J Goldfarb, B J Glasser & T Shinbrot, Nature 415, 302 - 305 (2002)
      5. Visual Categorization Shapes Feature Selectivity In The Primate Temporal Cortex, N Sigala & N K Logothetis, Nature 415, 318 - 320 (2002)
      6. Energetic Landscape Of Alpha-Lytic Protease Optimizes Longevity Through Kinetic Stability, S S Jaswal, J L Sohl, J H Davis & D A Agard, Nature 415, 343 - 346 (2002)
      7. Universality: Setting Standards, Frank Wilczek, Nature 415, 265 (2002)
      8. Priming Plasticity, Lynn E. Dobrunz, Craig C Garner, Nature 415, 277 - 278 (2002)
      9. Perception And Memory In Neuroscience: A Conceptual Analysis, M.R. Bennett & P.M.S. Hacker, Progress in Neurobiology, Vol 65, Issue 6, pp. 499 - 543, December 2001
      10. A New Direction For Population Vectors, Giuseppe Di Pellegrino, Trends in Cognitive Neurosciences, Vol 6, Issue 1, January 2002
      11. Patterns Of Dissociation In The Processing Of Verb Meanings In Brain-Damaged Subjects, D. Kemmerer, D. Tranel, J. Barrash, Language and Cognitive Processes, Vol. 16; Issue 1, pp. 1-34, 2001
      12. Stimulation Of Appetite By Alcohol, Marion M. Hetherington , F. Cameron, D. J. Wallis & L. M. Pirie, Physiology and Behaviour, Vol 74, Issue 3, pp. 283-289, October 2001
      13. Self-Reinforcing Dominance Interactions Between Virtual Males And Females. Hypothesis Generation For Primate Studies , Charlotte Hemelrijk, Adaptive Behavior 8, 2000
      14. China Tightens Web Controls, Wired/Associated Press, 02/01/18


    3. Conference Announcements Bookmark and Share

      1. Topics in Nonlinear Dynamics, Collective Phenomena and Complexity: Dynamical Model Formulation, Analysis and Symmetry, Canberra, Australia, 02/01/21-02/01
      2. Managing Complex Health Care Organizations In A Complex World, Cambridge, MA, 02/02/04-05
      3. Winter Chaos 2002, Brattleboro VT, 02/02/8-10
      4. 1st annual Conference on the Convergence of Nano- and Bio- Technology, San Diego, CA, 02/02/11-12
      5. Technology, Entertainment and Design (TED 12), Monterey, CA, 02/02/20-23
      6. ASPS [American Studies Project at Skeria] Seminar, Globalization and Business Cultures, Skellefteå, Sweden, 02/02/15-
      7. Physik Sozio-Oekonomischer Systeme, Regensburg, Germany, 02/03/11-15
      8. Capturing Business Complexity with Agent-Based Modeling and Simulation, Argonne National Laboratory, Il. 02/03/04-08
      9. SwarmFest 2002: Sixth Annual Swarm Users Meeting, Seattle, 02/03/29-31
      10. AIS'2002: Towards Component-Based Modeling and Simulation, Lisbon, Portugal, 02/04/07-10
      11. Modeling & Simulation of Microsystems (MSM 2002) & Intl. Conf on Comp Nano Science (ICCN 2002), San Juan, Puerto Rico, 02/04/22-25
      12. World Conference NL 2002 - Networked Learning in a Global Environment: Challenges and Solutions for Virtual Education, Berlin, Germany, 02/05/01-04
      13. International Conference on Complex Systems (ICCS2002), Nashua, NH, 02/06/9-14
      14. International Conference SocioPhysics, ZIF - Bielefeld, Germany, 02/06/06-09
      15. 2nd International Conference on Development and Learning (ICDL'02), MIT, Cambridge, Massachusetts USA, 02/06/12-15
      16. 7th International Conference on Music Perception & Cognition - ICMPC7, Sydney, 02/07/17-21
      17. Self-Organisation and Evolution of Social Behaviour, Monte Verità, Switzerland, 02/09/08-13
      18. Complex Systems (CS02) Complexity with Agent-based Modelling, Chuo University, Tokyo, Japan, 02/09/10-12
      19. 3rd Intl NAISO Symposium on Engineering Of Intelligent Systems (EIS 20020), Malaga, Spain, 02/09/24-27
      20. ACRI 2002, 5th Intl Conf on Cellular Automata for Research and Industry, Geneva, Switzerland, 02/10/09-11
      21. Artificial Life VIII, UNSW, Sydney, Australia, 02/12/09-13

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