Complexity Digest 2003.31

04-Aug-2003

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Content

  1. IMA International Conference Bifurcation 2003
  2. Electronic Voting System Is Vulnerable To Tampering For US Elections, ScienceDaily
    1. Suit Says Machines Missed 60,000 Votes in 2000 Race, NYTimes
  3. Brain scans 'reveal baby thoughts', BBC News
  4. A Neural Networks-Based Approach To Options Pricing, Int. J. Theor. & Appl. Finance
    1. Emerging Behavior In Electronic Bidding, Phys. Rev. E
  5. Neurobiology: A New Way To Network, Nature
    1. Dynamical Networks In Function Dynamics, Physica D
  6. Coarse-Grained Probabilistic Automata Mimicking Chaotic Systems, arXiv
  7. From Uzbek to Klingon, the Machine Cracks the Code, NYTimes
    1. Romancing the Rosetta Stone, EurekAlert
  8. Hierarchical Small Worlds in Software Architecture, SFI Working Papers
  9. Basic Principles Of Direct Chaotic Communications, Nonlin. Pheno. In Complex Sys.
    1. Press 'N' Peel Lasers: Coaxing Light Beams Out Of Cheap Plastic, Science News
  10. At What Time Scale Does The Nervous System Operate?, Neurocomputing
  11. From Nonlinearity to Optimality: Pheromone Trail Foraging by Ants, Animal Behaviour
  12. Birds Are Overlooked Top Predators In Aquatic Food Webs, Ecology
  13. Bees Trade Off Foraging Speed For Accuracy, Nature
  14. Adaptive Walks in a Gene Network Model of Morphogenesis: Insights into the Cambrian Explosion, SFI Working Papers
    1. A Genetic Melting-Pot, Nature
  15. Cyborg Liberation Front, The Village Voice
  16. Late Date for Siberian Site Challenges Bering Pathway, Science
    1. The Archaeology of Ushki Lake, Kamchatka, and the Pleistocene Peopling of the Americas, Science
  17. Video Violence: Playing With Fire?, Nature
  18. Chaos Theory: Managing DHS, Legal Times
  19. Complex Challenges: Global Terrorist Networks
    1. Central Asia: Terrorism, Religious Extremism, and Regional Stability, Brookings Testimony
    2. Did The Government Let Bin Laden's Trail Go Cold?, New Yorker
    3. Report on 9/11 Suggests a Role by Saudi Spies, NYTimes
    4. Pentagon Prepares a Futures Market on Terror Attacks, NYTimes
    5. Futuremap Program Canceled, DARPA Press Resease
    6. All Bets Are Off, NYTimes
  20. Links & Snippets
    1. Other Papers
    2. Webcast Announcements
    3. Conference & Call for Papers Announcements
    4. ComDig Announcement: New ComDig Archive in Beta Test

  1. IMA International Conference Bifurcation 2003 Next Article Bookmark and Share


  2. Electronic Voting System Is Vulnerable To Tampering For US Elections, ScienceDaily Next Article Bookmark and Share

    Excerpts: The software believed to be at the heart of an electronic voting system being marketed for use in elections across the nation has weaknesses that could easily allow someone to cast multiple votes for one candidate, computer security (...) determined. In particular, they pointed to the use of a "smart card," (...) inserted into the electronic voting machine, is designed to ensure that each person casts only one ballot. But the researchers believe a voter could hide a specially programmed counterfeit card in a pocket, withdraw it inside the booth and use it to cast multiple votes for a single candidate.

    1. Suit Says Machines Missed 60,000 Votes in 2000 Race, NYTimes Next Article Bookmark and Share

      Excerpts: At issue was the decision to disable special sensor latches designed to prevent people from accidentally pulling back the levers to record their votes before they had finished picking their candidates. For reasons that still remain a mystery, the city's election workers disabled those latches in 1964, taking away a built-in safeguard that advocates say would have prevented thousands of residents from losing their votes in every election. (...), seeks to force city election officials to restore the latches on every machine, at an estimated cost of $275,000.

  3. Brain scans 'reveal baby thoughts', BBC News Next Article Bookmark and Share

    Excerpts: The researchers involved, from Birkbeck College, and University College London, believe their finding could begin to settle a controversial argument on baby brain development. When an object is shown to six-month-old babies, then hidden, they often behave as if it is no longer present.(...) The London team wired up their babies to a harmless "hair-net" of sensors which measured electrical activity in the brain. (...) They were looking for a burst of activity that might correspond to the infant thinking about the object while it was hidden. One of the traditional tests used for these experiments is a toy train that is pushed into and out of a tunnel. What they found was a distinctive burst of electrical activity over a part of the brain called the temporal lobe at key stages in the game. It happened both when the object was "occluded", or hidden, and again at around the time the baby might expect the train to reappear from the tunnel.

  4. A Neural Networks-Based Approach To Options Pricing, Int. J. Theor. & Appl. Finance Next Article Bookmark and Share

    Abstract: The paper presents two alternative schemes for pricing European and American call options, both based on artificial neural networks. The first method uses binomial trees linked to an innovative stochastic volatility model. The volatility model is based on wavelets and artificial neural networks. Wavelets provide a convenient signal/noise decomposition of the volatility in the non-linear feature space. Neural networks are used to infer future volatility levels from the wavelets feature space in an iterative manner. In the second approach neural networks are trained with genetic algorithms (...). Market options prices as quoted on the Chicago Board Options Exchange are used for performance comparison (...).

    1. Emerging Behavior In Electronic Bidding, Phys. Rev. E Next Article Bookmark and Share

      Abstract: We characterize the statistical properties of a large number of agents on two major online auction sites. The measurements indicate that the total number of bids placed in a single category and the number of distinct auctions frequented by a given agent follow power-law distributions, implying that a few agents are responsible for a significant fraction of the total bidding activity on the online market. We find that these agents exert an unproportional influence on the final price of the auctioned items. This domination of online auctions by an unusually active minority may be a generic feature of all online mercantile processes.

  5. Neurobiology: A New Way To Network, Nature Next Article Bookmark and Share

    Excerpts: During the development of the nervous system, nerve cells must extend projections called axons over considerable distances to construct a complex network of connections. How axons extend in the correct direction is conceptually simple: the extremity of the axon (...) explores its local environment for molecular cues, which guide it along the right trajectory. In practice, however, guidance of the growth cone is a complex, tightly regulated mechanism that involves several different families of guidance molecules. (...) acts on nerve-cell axons to ensure that the brain develops normally.

    1. Dynamical Networks In Function Dynamics, Physica D Next Article Bookmark and Share

      Abstract: As a first step toward realizing a dynamical system that evolves while spontaneously determining its own rule for time evolution, function dynamics (FD) is analyzed. FD consists of a functional equation with a self-referential term, given as a dynamical system of a one-dimensional map. Through the time evolution of this system, a dynamical graph (a network) emerges. This graph has three interesting properties: (i) vertices appear as stable elements, (ii) the terminals of directed edges change in time, and (iii) some vertices determine the dynamics of edges, and edges determine the stability of the vertices, complementarily.

  6. Coarse-Grained Probabilistic Automata Mimicking Chaotic Systems, arXiv Next Article Bookmark and Share

    Abstract: Discretization of phase space usually nullifies chaos in dynamical systems. We show that if randomness is associated with discretization dynamical chaos may survive and be indistinguishable from that of the original chaotic system, when an entropic, coarse-grained analysis is performed. Relevance of this phenomenon to the problem of quantum chaos is discussed.

  7. From Uzbek to Klingon, the Machine Cracks the Code, NYTimes Next Article Bookmark and Share

    Excerpts: Statistical machine translation - in which computers essentially learn new languages on their own instead of being "taught" the languages by bilingual human programmers - has taken off. The new technology allows scientists to develop machine translation systems for a wide number of obscure languages at a pace that experts once thought impossible. Dr. Knight and others said the progress and accuracy of statistical machine translation had recently surpassed that of the traditional machine translation programs used by Web sites like Yahoo and BabelFish.

    1. Romancing the Rosetta Stone, EurekAlert Next Article Bookmark and Share

      Excerpt: Och is a standout exponent of a newer method of using computers to translate one language into another that has become more successful in recent years as the ability of computers to handle large bodies of information has grown, and the volume of text and matched translations in digital form has exploded, on (for example) multilingual newspaper or government web sites. Och's method uses matched bilingual texts, the computer-encoded equivalents of the famous Rosetta Stone inscriptions. Or, rather, gigabytes and gigabytes of Rosetta Stones.

  8. Hierarchical Small Worlds in Software Architecture, SFI Working Papers Next Article Bookmark and Share

    Abstract: The components of a large software application do not interact in random ways. Instead, class diagrams exhibit remarkable topological similarities to other natural and artificial systems. The components of a large software application are very well connected because the mean shortest distance between them is very low in spite of having a relatively small number of connections per class. In addition, these diagrams are very heterogeneous. These measurements are of a general nature and are largely independent of the particular semantics of the application. As shown in this paper, and irrespective of the specific features of each system analyzed, the final outcome of software evolution is a small world, hierarchical class diagram with well-defined statistical properties. The consequences for software evolution are outlined.

  9. Basic Principles Of Direct Chaotic Communications, Nonlin. Pheno. In Complex Sys. Next Article Bookmark and Share

    Excerpts: Basics of the theory of direct chaotic communications is presented. We introduce the notion of chaotic radio pulse and consider signal structures and modulation methods applicable in direct chaotic schemes. Signal processing in non-coherent and coherent receivers is discussed. The efficiency of direct chaotic communications is investigated by means of numerical simulation. Potential application areas are analyzed, including multiple access systems.

    1. Press 'N' Peel Lasers: Coaxing Light Beams Out Of Cheap Plastic, Science News Next Article Bookmark and Share

      Excerpts: The key to the new technique is a hard mold with a shallow grating on its surface. The nanometer-scale depths and spacing of the ultrafine, parallel ridges provide a fine structure that stimulates laser action. To make each laser, the researchers press their mold into a droplet of solution. It contains a semiconducting polymer, known by the acronym MEH-PPV, (...). When the coating dries, the polymer retains a negative replica of the mold's ridges. That structure, which the researchers peel from the mold, acts as a laser.

  10. At What Time Scale Does The Nervous System Operate?, Neurocomputing Next Article Bookmark and Share

    Abstract: A novel statistical strategy, the spike jitter method, was developed to assess temporal structure in spike trains from neuronal ensembles. Its key feature is the introduction of a null hypothesis that assumes a uniform relative likelihood of observing a spike at one temporal location versus another within a small temporal window. We applied the method to simultaneously recorded motor cortical neurons in behaving monkeys and examined the occurrence of finely timed synchrony between neuron pairs. Evidence was found for millisecond synchrony that could only be accounted for by assuming fine temporal structure in the constituent neurons' spike trains.

  11. From Nonlinearity to Optimality: Pheromone Trail Foraging by Ants, Animal Behaviour Next Article Bookmark and Share

    Abstract: Pheromone trails laid by foraging ants serve as a positive feedback mechanism for the sharing of information about food sources. This feedback is nonlinear, in that ants do not react in a proportionate manner to the amount of pheromone deposited. Instead, strong trails elicit disproportionately stronger responses than weak trails. Such nonlinearity has important implications for how a colony distributes its workforce, when confronted with a choice of food sources. We investigated how colonies of the Pharaoh's ant, Monomorium pharaonis, distribute their workforce when offered a choice of two food sources of differing energetic value. By developing a nonlinear differential equation model of trail foraging, and comparing model with experiments, we examined how the ants allocate their workforce between the two food sources. In this allocation, the most profitable feeder (i.e. the feeder with the highest concentration of sugar syrup) was usually exploited by the majority of ants. The particular form of the nonlinear feedback in trail foraging means that when we offered the ants a choice between two feeders of equal profitability, foraging was biased to the feeder with the highest initial number of visitors. Taken together, our experiments illuminate how pheromones provide a mechanism whereby ants can efficiently allocate their workforce among the available food sources without centralized control.

  12. Birds Are Overlooked Top Predators In Aquatic Food Webs, Ecology Next Article Bookmark and Share

    Abstract: Most freshwater food web models assume that fish occupy the top trophic level. Yet many diet studies and a few caging and artificial stream experiments suggest that birds may be top predators in many freshwater systems. We conducted a large-scale field experiment to test whether avian predators affect the size distribution and abundance of fish in two midwestern streams. We show that these species of piscivorous birds can alter the abundance of common prey and thus need to be considered more fully when attempting to explain the structure of aquatic food webs.

  13. Bees Trade Off Foraging Speed For Accuracy, Nature Next Article Bookmark and Share

    Excerpts: Bees have an impressive cognitive capacity 1-4, but the strategies used by individuals in solving foraging tasks have been largely unexplored. Here we test bumblebees (Bombus terrestris) in a colour-discrimination task on a virtual flower meadow and find that some bees consistently make rapid choices but with low precision, whereas other bees are slower but highly accurate. Moreover, each bee will sacrifice speed in favour of accuracy when errors are penalized (...). To our knowledge, bees are the first example of an insect to show between-individual and within-individual speed- accuracy trade-offs.

  14. Adaptive Walks in a Gene Network Model of Morphogenesis: Insights into the Cambrian Explosion, SFI Working Papers Next Article Bookmark and Share

    Abstract: The emergence of complex patterns of organization close to the Cambrian boundary is known to have happened over a (geologically) short period of time. It involved the rapid diversification of body plans and stands as one of the major transitions in evolution. How it took place is a controversial issue. Here we explore this problem by considering a simple model of pattern formation in multicellular organisms. By modeling gene network-based morphogenesis and its evolution through adaptive walks, we explore the question of how combinatorial explosions might actually have been involved in the Cambrian event. Here we show that a small amount of genetic complexity, including both gene regulation and cell-cell signaling, allows one to generate an extraordinary repertoire of stable spatial patterns of gene expression that are compatible with observed anteroposterior patterns in the early development of metazoans. The consequences for the understanding of the tempo and mode of the Cambrian event are outlined.

    1. A Genetic Melting-Pot, Nature Next Article Bookmark and Share

      Excerpts: The issue of whether race is a biologically useful or even meaningful concept when applied to humans in a medical context is controversial (...). But there is no contradiction between these two well-substantiated bodies of data, as they actually deal with two different questions that have become confused with one another. The first question is: "Is it possible to find DNA sequences that differ sufficiently between populations to allow correct assignment of major geographical origin with high probability?" The answer to this question is yes, (...).
      • Source: A Genetic Melting-Pot, Marcus W. Feldman, Richard C. Lewontin, Mary-Claire King, Nature, VOL 424, 24 JULY 2003

  15. Cyborg Liberation Front, The Village Voice Next Article Bookmark and Share

    Excerpts: From the first walking stick to bionic eyes, neural chips, and Stephen Hawking's synthesized voice, they would argue we've long been in the process of becoming cyborgs. A "hybrot," a robot governed by neurons from a rat brain, is now drawing pictures. Dolly the sheep broke the barrier on cloning, and new transgenic organisms are routinely created. The transhumanists gathered because supercomputers are besting human chess masters, and they expect a new intelligence to pole-vault over humanity-in this century.

  16. Late Date for Siberian Site Challenges Bering Pathway, Science Next Article Bookmark and Share

    Excerpts: (...) the first people to arrive in the Americas have tended to appear and vanish with each new twist in the archaeological record. (...) casts another shadow over a once-cherished idea: that Asian big-game hunters crossed the Bering Land Bridge to give rise to the Clovis people, who were considered the first Americans. New dates show that a crucial Siberian site, thought to be a way station along the Bering road, wasn't occupied until after the Clovis had begun killing mammoths in North America.

    1. The Archaeology of Ushki Lake, Kamchatka, and the Pleistocene Peopling of the Americas, Science Next Article Bookmark and Share

      Excerpts: The Ushki Paleolithic sites of Kamchatka, Russia, have long been thought to contain information critical to the peopling of the Americas, especially the origins of Clovis. New radiocarbon dates indicate that human occupation of Ushki began only 13,000 calendar years ago-nearly 4000 years later than previously thought. (...), these data suggest that late-glacial Siberians did not spreadinto Beringia until the endof the Pleistocene, perhaps too recently to have been ancestral to proposedpre-Clovis populations in the Americas.

  17. Video Violence: Playing With Fire?, Nature Next Article Bookmark and Share

    Excerpts: Different experiments often measure different proxies for aggression, for example. Some merely record signs of physiological arousal, such as increased heart rate and blood pressure, after subjects play violent games. Others try to assess violent thoughts, based, for example, on how subjects complete a partial story given to them. Few studies have looked at actual acts, such as blasting another person with sound in the lab, or hitting other children. (...) carefully designed longitudinal studies - tracking the real-life histories of heavy game players - would advance our understanding.

  18. Chaos Theory: Managing DHS, Legal Times Next Article Bookmark and Share

    Excerpts: The Department of Homeland Security is seeking a few good lawyers -- 68 to be exact. (...) Not only will they be organizing their own newly created office, but also they'll be assisting with the massive government restructuring of 22 federal agencies and a bureaucracy of more than 170,000 employees that make up the Department of Homeland Security. (...) it remains unclear what role DHS lawyers will play in handling major homeland security-related legal issues, including civil rights, the use of the military on American soil, and emergency response.

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

    1. Central Asia: Terrorism, Religious Extremism, and Regional Stability, Brookings Testimony Next Article Bookmark and Share

      Excerpts: (...) harsh government repression of dissent is as much, if not more of, a threat to Central Asian stability today and in the immediate future as the radical Islamic movements that have developed indigenously or moved into the region. This contention is underscored by the fact that in spite of faltering political and economic reforms, mounting social problems, and constraints on opposition forces in all the Central Asian states, the most fertile ground for radical groups has been Uzbekistan where government repression has been more acute and targeted than elsewhere.

    2. Did The Government Let Bin Laden's Trail Go Cold?, New Yorker Next Article Bookmark and Share

      Excerpts: To the frustration of many of the people involved in the fight against Al Qaeda, the Bush Administration is said to have been distracted by competing priorities-most notably, the war in Iraq. Rohan Gunaratna, a Sri Lankan terrorism expert who has analyzed thousands of Al Qaeda documents recovered by various governments, said, "I feel that if they had not gone to Iraq they would have found Osama by now. The best people were moved away from this operation. The best minds were moved to Iraq.

    3. Report on 9/11 Suggests a Role by Saudi Spies, NYTimes Next Article Bookmark and Share

      Excerpts: The classified part of a Congressional report on the terrorist attacks on Sept. 11, 2001, says that two Saudi citizens who had at least indirect links with two hijackers were probably Saudi intelligence agents and may have reported to Saudi government officials, according to people who have seen the report. These findings, according to several people who have read the report, help to explain why the classified part of the report has become so politically charged, causing strains between the United States and Saudi Arabia.

    4. Pentagon Prepares a Futures Market on Terror Attacks, NYTimes Next Article Bookmark and Share

      Excerpts: The Pentagon, in defending the program, said such futures trading had proven effective in predicting other events like oil prices, elections and movie ticket sales. "Research indicates that markets are extremely efficient, effective and timely aggregators of dispersed and even hidden information," the Defense Department said in a statement. "Futures markets have proven themselves to be good at predicting such things as elections results; they are often better than expert opinions." (...) "The payoff if he's assassinated is $1 per future.(...)"

    5. Futuremap Program Canceled, DARPA Press Resease Next Article Bookmark and Share

      Excerpts: The Director of the Defense Advanced Research Projects Agency (DARPA) announced today that DARPA's participation in the Futures Markets Applied to Prediction (FutureMAP) program has been withdrawn. The related Small Business Innovative Research effort will be terminated for convenience, effective immediately. FutureMAP was one of the sponsors of the Policy Analysis Market web site that has been the subject of recent news articles. (...) DARPA believes it is important to continue funding research that examines how to better use advanced information technologies and processes as predictive tools for terrorist acts. The U.S. will need capabilities to solve the problems identified in the Congressional report on the 9-11 attacks.

    6. All Bets Are Off, NYTimes Next Article Bookmark and Share

      Excerpts: (...) markets work better when they are deep and liquid - that is, with many participants and lots of transactions. This raises reliability and reduces the risk of manipulation. How deep and liquid could the market for terrorism futures be? (...) To attract "investors," the Pentagon needed to offer a significant payoff. But with big payoffs, the incentive for market manipulation rises. And in the case of terrorism futures, market manipulation can show up not as a forged buy order but as a bullet. Fortunately, existing markets already gauge worldwide risks.

  20. Links & Snippets Next Article Bookmark and Share

    1. Other Papers Next Article Bookmark and Share

      1. SFI Working Papers
      2. Cooperation and Competition in Heterogeneous Environments: The Evolution of Resource Sharing in Clonal Plants, Krisztian Magori, Beáta Oborny, Ulf Dieckmann, Geza Meszena, DOI: SFI-WP 03-08-047
      3. Play Signaling and the Perception of Social Rules by Juvenile Chimpanzees, Jessica C. Flack, Lisa A. Jeannotte, Frans B. M. de Waal, DOI: SFI-WP 03-08-046
      4. From Finite to Infinite Range Order via Annealing: The Causal Architecture of Deformation Faulting in Annealed Close-Packed Crystals, Dowman P. Varn, James P. Crutchfield, DOI: SFI-WP 03-07-045
      5. Beyond Clots: Platelets In Blood May Guide Immune Response, Platelets, best known for their ability to create blood clots in wounds, may also have a role in the immune system. Also available in Audible format
      6. Miniature Motor: Nanotubes Central To New Rotating Device, Researchers have used miniature, nested cylinders, called multiwalled carbon nanotubes, to make a motor only 300 nanometers long.
      7. Mastering the Mixer, Almost anything can happen when a batch of grains or powders is mixed-including striking, swirling patterns and spontaneous, total separation-so researchers are playing with beads, salt, sand, and other particles in simple tumblers to find out what's going on. Also available in Audible format
      8. New Neurons on Demand?, A molecular switch regulates neuron production in the adult brain, Also available in Audible format
      9. Quantum Dots Wired for Spintronics, Connected dots are a step toward a new breed of ultrapowerful computers, Also available in Audible format
      10. Making Memories Through Music, Music lessons boost children's memory for words, Also available in Audible format
      11. 30,000 Years of Hydrothermal Activity at the Lost City Vent Field, Gretchen L. Früh-Green, Deborah S. Kelley, Stefano M. Bernasconi, Jeffrey A. Karson, Kristin A. Ludwig, David A. Butterfield, Chiara Boschi, Giora Proskurowski, Science 2003 301: 495-498
      12. Giving Aid, Staying Alive: Elderly Helpers Have Longevity Advantage, Bruce Bower, 03/07/26, Science News, Vol. 164, No. 4, Also available in Audible format
      13. Catch Zero, What Can Be Done As Marine Ecosystems Face A Deepening Crisis?, Ben Harder, 03/07/26, Science News, Vol. 164, No. 4, Also available in Audible format
      14. Electrodes In Brain To 'Switch Off' Pain, Breakthrough Implant Surgery May Help Patients To Control Agony Caused By Major Injury, Jo Revill, 03/07/27, The Observer
      15. Virtual Humans Edge Closer, Spencer Kelly, 03/07/27, BBC Online
      16. I Think, Therefore I Communicate, Lakshmi Sandhana, 03/07/30, Wired
      17. Ground-Breaking Work In Understanding Of Time, Mechanics, Zeno and Hawking undergo revision, 03/07/31, EurekAlert
      18. Iterated Learning and Grounding: From Holistic to Compositional Languages, Paul Vogt, 2003-07-16, CogPrints, DOI: 3057
      19. Grounded Lexicon Formation Without Explicit Reference Transfer: who's talking to who?, Paul Vogt, 2003-07-16, CogPrints (ECAL 2003), DOI: 3059
      20. Anchoring of Semiotic Symbols, Paul Vogt, 2003-07-16, CogPrints (Robotics and Autonomous Systems 43(2):109-120), DOI: 3054
      21. Learning Analogies and Semantic Relations, Peter D. Turney, Michael L. Littman, 2003-07-24, arXiv, DOI: cs.LG/0307055
      22. Modeling the Topological Organization of Cellular Processes, Jean-Louis Giavitto, Olivier Michel, 2003-07-26, Biosystems, Article in Press, Corrected Proof, DOI: 10.1016/S0303-2647(03)00037-6
      23. Web Access to Cultural Heritage for the Disabled, Jonathan P. Bowen, 2003-07-30, arXiv, DOI: cs.CY/0307068
      24. Low Dimensional Attractors Arise From Forcing At Small Scales, J. C. Robinson - jcramaths.warwick.ac.uk, 2003/07/01, DOI: 10.1016/S0167-2789(03)00096-4
      25. Topology Of The World Trade Web, M. Á. Serrano & M. Boguñá, 2003/07/11, DOI: 10.1103/PhysRevE.68.015101
      26. Moving And Staying Together Without A Leader, G. Grégoire - gregoireadrecam.saclay.cea.fr, h. chaté & yuhai tu, 2003/07/15, DOI: 10.1016/S0167-2789(03)00102-7
      27. Reduced Oxygen At High Altitude Limits Maximum Size, G. Chapelle & L. S. Peck, 2003/07/28
      28. Pattern Formation In Malthusian Growth With Transport Memory, S Harris - stewart.harrisasunysb.edu, 2003/08/01, DOI: 10.1088/0305-4470/36/30/306
      29. Neurobiology: Caught In The Act, Yadin Dudai, 24 July 2003, Nature 424, 377 - 378, DOI: 10.1038/424377a
      30. Developmental Biology: Synthetic Sex Cells, Carina Dennis, 24 July 2003, Nature 424, 364 - 366, DOI: 10.1038/424364a
      31. Productivity-Biodiversity Relationships Depend On The History Of Community Assembly, Tadashi Fukami, Peter J. Morin, 24 July 2003, Nature 424, 423 - 426, DOI: 10.1038/nature01785
      32. The Role Of Neuronal Identity In Synaptic Competition, Narayanan Kasthuri, Jeff W. Lichtman, 24 July 2003, Nature 424, 426 - 430, DOI: 10.1038/nature01836
      33. Experiments On Direct Chaotic Communications In Microwave Band, A. S. Dmitriev, B. Ye. Kyarginsky, A. I. Panas & S. O. Starkov, Jun. 2003, DOI: 10.1142/S0218127403007345
      34. A Source Of Individual Variation, W. B. Levy - wblavirginia.edu, x. wu, a. j. greene & b. a. spellman, Jun. 2003, DOI: 10.1016/S0925-2312(02)00802-0
      35. Activity-Based Knowledge Management Systems, H. Hasan & E. Gould, Jun. 2003, DOI: 10.1142/S0219649203000048
      36. The Cat's Cradle Network, D. Pigott, J. Gammack & V. Hobbs, Jun. 2003, DOI: 10.1142/S0219649203000097
      37. Adaptive Habitat Use In Size-Structured Populations: Linking Individual Behavior To Population Processes, L. Persson & A. M. De Roos, May 2003

    2. Webcast Announcements Next Article Bookmark and Share

      1. IMA International Conference Bifurcation 2003, Univ. Southampton, UK, 27-30 July, 2003
      2. New Santa Fe Institute President About His Vision for SFI's Future Role, (Video, Santa Fe, NM, 03/06/04)
      3. Edge Videos
        1. Einstein And Poincaré, Peter Galison, 03/06/
        2. Genome Changes Everything, Matt Ridley, 03/06/
        3. A United Biology, E.O. Wilson, 03/05/28
        4. In The Matrix, Martin Rees, 03/05/19
        5. Who Cares About Fireflies? Steven Strogatz, 03/05/12
      4. World Economic Forum Extraordinary Annual Meeting, Jordan, 03/06/21-23
      5. SPIE's 1st Intl Symp on Fluctuations and Noise, Santa Fe, NM, 2003/06/01-04
      6. NAS Sackler Colloquium on Mapping Knowledge Domains, Video/Audio Report, 03/05/11
      7. Uncertainty and Surprise: Questions on Working with the Unexpected and Unknowable, The University of Texas Austin, Texas USA, 2003/04/10-12
      8. New Trends In Industrial Partnership And Innovation Management At European Research Laboratories, CERN, Geneva, 2003/03/19 (with webcast)
        1. CERN Webcast Service, Streamed videos of Archived Lectures and Live Events
      9. Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998

       


    3. Conference & Call for Papers Announcements Next Article Bookmark and Share

      1. Exystence Thematic Institute - Algorithms And Challenges In Hard Combinatorial Problems - Trieste, Italy, 03/07/01-31, Turin, Italy, 03/10/01-30
      2. Leadership for Complex Changes - Seattle Conference, Seattle, WA USA, 03/08/04-05
      3. 13th Annual International Conference, Soc f Chaos Theory in Psych & Life Sciences,Boston, MA, USA, 2003/08/08-10
      4. Thematic Institute "Networks and Risks", Budapest, Hungary, 03/08/25 - 09/27
      5. Conference on Growing Networks and Graphs in Statistical Physics, Finance, Biology and Social Systems, Rome, 03/09/01-05
      6. Call for Papers on Dynamical Hierarchies, Special Issue of Artificial Life, Deadline: 2003/09/05
      7. 7th European Conference on Artificial Life (ECAL-2003), Dortmund, Germany, 2003/09/14-17
      8. A Dual International Conference on Ethics, Complexity & Organisations & Creativity, London, UK, 2003/09/17-18
      9. 1st German Conference on Multiagent System Technologies (MATES'03), Erfurt, Germany, 2003/09/22-25
      10. Dynamics Days 2003, XXIII Annual Conference, 4 Decades of Chaos 1963-2003, Palma de Mallorca, Spain, 03/09/24-27
      11. Improving The NHS Through The Lens Of Complexity, U Exeter, UK, 03/09/24-26
      12. Emerging Technologies Conference at MIT, Cambridge, MA, 2003/09/24-25
      13. Intl School Mathematical Aspects of Quantum Chaos II Quantum Chaos on Hyperbolic Manifolds, Schloss Reisensburg (Günzburg, Germany), 03/10/04-11
      14. 2003 IEEE/WIC Intl Joint Conf. Web Intelligence and Intelligent Agent Technology, Halifax, Canada, 2003/10/13-17
        1. Workshop on Collaboration Agents: Autonomous Agents for Collaborative Environments, Halifax, Canada, 03/10/13
      15. American Society for Cybernetics (ASC) 2003 Conference (H.v.Foerster), Vienna, Austria , 2003/11/10-15
      16. Trends And Perspectives In Extensive And Non-Extensive Statistical Mechanics, In Honour Of The 60th Birthday Of Constantino Tsallis, Angra Dos Reis, Brazil, 2003/11/19-21
      17. ICDM '03: The Third IEEE International Conference on Data Mining, Melbourne, Florida, USA, 2003/11/19-22
      18. 4th Intl Conf on Systems Science and Systems Engineering, Hong Kong, 03/11/25-28
      19. 3rd International Workshop on Meta-Synthesis and Complex System, Guangzhou, China, 2003/11/29-30
      20. 2nd International Workshop on the Mathematics and Algorithms of Social Insects, Georgia Tech, Atlanta, Georgia, USA; 2003/12/15-17
      21. 2nd Biennial Seminar on the Philosophical, Epistemological, and Methodological Implications of Complexity Theory, Havana, Cuba, 04/01/07-10
      22. 1st International Workshop on Biologically Inspired Approaches to Advanced Information Technology, Lausanne, Switzerland, 04/01/29-30
      23. 4th Intl ICSC Symposium Engineering Of Intelligent Systems (EIS 2004), Island of Madeira, Portugal, 04/02/29-03/02
      24. Fractal 2004, "Complexity and Fractals in Nature", 8th Intl Multidisciplinary Conf , Vancouver, Canada, 2004/04/04-07
      25. Urban Vulnerability and Network Failure: Constructions and Experiences of Emergencies, Crises and Collapse, Manchester, UK, 04/04/29-30
      26. Fifth International Conference on Complex Systems (ICCS2004), Boston, MA, USA, 2004/05/16-21
      27. 13th International Symposium on HIV & Emerging Infectious Diseases, Toulon, France, 04/06/03-05

    4. ComDig Announcement: New ComDig Archive in Beta Test Bookmark and Share

      We are in the process of upgrading the Complexity Digest archives to a format with improved search capabilities. Also, we will finally be able to adequately publish the valuable feedback and comments from our knowledgable readers. You are cordially invited to become a beta tester of our new ComDig2 archive.

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