Complexity Digest 2003.37

15-Sep-2003

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Content

  1. How Managers Misuse Information When Making Decisions, Knowledge @ Wharton
    1. Santiago Dreaming, The Guardian
  2. Slowed Down by Speed, Science
    1. Amphetamine Or Cocaine Limits Structural Neocortex, PNAS
    2. When Intelligence Loses Its Impact: Neural Efficiency, Int. J. Psychophysiol.
  3. A Model For Emergent Complex Order In Small Neural Networks, J. Integrative Neurosc.
  4. Palaeoanthropology: Tracking The First Americans, Nature
  5. Getting More From a PC's Spare Time, KurzweilAI.net
    1. Computer That Reads Lips, KurzweilAI.net
    2. Smart Software Makes Sense Of Rough Sketches, NewScientist
    3. Bacteria-Powered Battery Runs On A Sweet Tooth, Usa Today
  6. MIT's RoboSnails Model Novel Movements, ScienceDaily
  7. Hypocrisy Keeps Nations Poor, New Zealand Herald
    1. Give Unto Others: Monkeys Give Food To Those Who Give Food Back, Alphagalileo & Proc. Biol. Sc.
  8. Evolution Of Cooperation And Conflict In Experimental Bacterial Populations, Nature
    1. Evolution Of Novel Cooperative Swarming In The Bacterium Myxococcus Xanthus, Nature
    2. Defective Or Effective? Mutualistic Interactions Between Virus Genotypes, Alphagalileo & Proc. Biol. Sc.
  9. Self-Organization of Cognitive Performance, Journal of Experimental Psychology: General
  10. Gene Regulation: RNA To The Rescue?, Nature
    1. Cell Plasticity: Flexible Arrangement, Nature
  11. Soundless Music Shown to Produce Weird Sensations, Reuters
  12. Science Of Waves May Unlock Surfing Secrets, New Zealand Herald
  13. The Legacy of Biosphere 2 for the Study of Biospherics and Closed Ecological Systems, Advances in Space Research
  14. Distributed Climate Model Aims For Errors, NewScientist
  15. Venus Possibly Habitable For Billions Of Years, NewScientist
    1. Suffocation Suspected For Greatest Mass Extinction, NewScientist
    2. Allee Effects, Extinctions, And Chaotic Transients In Simple Population Models, Theor. Population Biol.
  16. Quantum Physics: Entanglement Hits The Big Time, Nature
    1. Biomolecule Behaves Like A Wave, Physics Web
    2. Wave Nature of Biomolecules and Fluorofullerenes, Phys. Rev. Lett.
  17. Dissipationless Quantum Spin Current at Room Temperature, Science
    1. Scientists Forge Ahead With Domestication Of Molecules, MIT News
  18. Detecting Chemical Threats With 'Intelligent' Networks, ScienceDaily
  19. Complex Challenges: Global Terrorist Networks
    1. Finding the Face of Terror in Data, NYTimes
    2. Plans for Terror Inquiries Still Fall Short, Report Says, NYTimes
    3. Questions Grow on Pakistan's Commitment to Fight Taliban, NYTimes
  20. Links & Snippets
    1. Other Publications
    2. Webcast Announcements
    3. Conference & Call for Papers Announcements
    4. ComDig Announcement: New ComDig Archive in Beta Test

  1. How Managers Misuse Information When Making Decisions, Knowledge @ Wharton Next Article Bookmark and Share

    Excerpts: Fans of the hit TV comedy "The Jerry Seinfeld Show" may remember an episode in which Jerry's friend George leaves his car parked at work so that the boss will think George is putting in long hours, even when he's not. The idea, of course, is that George's apparent productivity will net him a higher raise or bonus. Wharton professor Maurice Schweitzer would call George's behavior "an attempt to invoke the input bias - the use of input information (in this case the false impression of long hours) to judge outcomes." As extreme as this example might seem, business decisions are frequently made based on input that is either biased or manipulated, as Schweitzer and colleague Karen Chinander suggest in a new paper entitled, "The Input Bias: The Misuse of Input Information in Judgments of Outcomes."

    1. Santiago Dreaming, The Guardian Next Article Bookmark and Share

      Excerpts: (...) This was known as Project Cybersyn, and nothing like it had been tried before, or has been tried since.
      Stafford Beer attempted, in his words, to "implant" an electronic "nervous system" in Chilean society. Voters, workplaces and the government were to be linked together by a new, interactive national communications network, which would transform their relationship into something profoundly more equal and responsive than before - a sort of socialist internet, decades ahead of its time.

  2. Slowed Down by Speed, Science Next Article Bookmark and Share

    Excerpts: Cocaine may not exactly fry your brain, but even modest exposure to speed-type drugs stunts growth in brain cells.

    1. Amphetamine Or Cocaine Limits Structural Neocortex, PNAS Next Article Bookmark and Share

      Excerpts: Drugs of abuse and many other kinds of experiences share the ability to alter the morphology of neuronal dendrites and spines, the primary site of excitatory synapses in the brain. We hypothesized, therefore, that exposure to psychostimulant drugs might influence later experience-dependent structural plasticity. We tested this hypothesis by treating rats repeatedly with amphetamine or cocaine and then housing them in either a complex environment or standard laboratory cages for 3-3.5 mo. (...) number of dendritic branches and the density of dendritic spines on medium spiny neurons in the nucleus accumbens and pyramidal cells in the parietal cortex were quantified. On most measures, prior treatment with amphetamine or cocaine interfered with the ability of experience in a complex environment to increase dendritic arborization and spine density. We conclude that in some brain regions, repeated exposure to psychomotor-stimulant drugs limits the ability of later experience to produce this form of synaptic plasticity, which may contribute to the persistent behavioral and cognitive deficits associated with drug abuse.

    2. When Intelligence Loses Its Impact: Neural Efficiency, Int. J. Psychophysiol. Next Article Bookmark and Share

      Abstract: Several studies have revealed that persons with a lower IQ show more cortical activity when solving intelligence-related tasks than more intelligent persons do. Such results are interpreted in terms of neural efficiency: the more intelligent a person is, the fewer mental resources have to be activated. A comparison of participants with lower and higher IQs (median split) revealed higher cortical activation in the less intelligent group for the novel task, but not for the familiar task. These results suggest that long-term experience can compensate for lower intellectual ability, even at the level of cortical activation.

  3. A Model For Emergent Complex Order In Small Neural Networks, J. Integrative Neurosc. Next Article Bookmark and Share

    Abstract: A new neural network model is introduced in this paper. The aim of the proposed Sierpinski neural networks is to provide a simple and biologically plausible neural network architecture that produces emergent complex spatio-temporal patterns through the activity of the output neurons of the network and is able to perform computational tasks. Such networks may play an important role in the analysis and understanding of complex dynamic activity observed at various levels of biological neural systems. We discuss about emerging neural activity patterns and their interpretations, neuro-computation with such emerging activity patterns, and also possible implications for computational neuroscience.

  4. Palaeoanthropology: Tracking The First Americans, Nature Next Article Bookmark and Share

    Excerpts: A study of 33 ancient skulls excavated from Mexico invites us to reconsider our view of the ancestry of the early Americans. Unlike most other early American remains, the skulls resemble those from south Asian populations. (...) and that they arrived in America from northeast Asia about 12,000 years ago. (...) They present a comparative study of early historic human skulls from Baja California, Mexico, and their findings lend weight to the view that not all early American populations were directly related to present-day Native Americans.

  5. Getting More From a PC's Spare Time, KurzweilAI.net Next Article Bookmark and Share

    Excerpts: A new program, Berkeley Open Infrastructure for Network Computing (Boinc), will eventually allow the SETI@home project to join forces with other distributed computing initiatives so volunteers can take part in multiple projects instead of just one. David P. Anderson, a scientist at the...

    1. Computer That Reads Lips, KurzweilAI.net Next Article Bookmark and Share

      Excerpts: Scientists at IBM, Intel, and in many other labs are developing digital lip-reading systems to augment the accuracy of speech...

    2. Smart Software Makes Sense Of Rough Sketches, NewScientist Next Article Bookmark and Share

      Excerpts: Intelligent software that brings rough sketches to life in a virtual world is promising to revolutionise the way children learn and to help engineers visualise their designs. In designing the software, developers at the Massachusetts Institute of Technology have had to tackle several tough tasks. First the software must recognise crude hand-drawn shapes in the way the user intended for example, by spotting that four wiggly lines represent a square with straight sides.

    3. Bacteria-Powered Battery Runs On A Sweet Tooth, Usa Today Next Article Bookmark and Share

      Excerpts: (...) battery that uses iron-breathing bacteria to eat the sugars in carbohydrates and turn them into electricity. Previous research has shown it is possible to use microbes to turn organic matter into electricity, but the process required the use of added materials to shuttle the electrons, making such fuel cells expensive and not long-lasting. (...)bacterium Rhodoferax ferrireducens can turn simple sugars, found in everything from straw to fruit, directly into electricity. (...)discovered a way to dupe the bacteria into passing those electrons onto an electrode instead, producing an electrical current.

  6. MIT's RoboSnails Model Novel Movements, ScienceDaily Next Article Bookmark and Share

    Excerpts: The humble snail, trailed by its ribbon of slime, now has its first robotic counterpart in research at MIT that could lead to new forms of locomotion for future machines. RoboSnails I and II each consist of electronics aboard a rubber "foot" about six inches long by one inch wide. The robots glide over a thin film of "mucus," or silicon oil. The two were created to test mathematical simulations describing forms of snail locomotion. Snails "can maneuver over a range of complex terrains-even across ceilings-and they're very mechanically simple," said (...).

  7. Hypocrisy Keeps Nations Poor, New Zealand Herald Next Article Bookmark and Share

    Excerpts: But I could also see that the problem went deeper - into the very way that the international trading system operated. Behind the complexity lies a stark moral issue. The West preaches free trade and, under the threat of cutting off aid and loans, we force Third World countries to open their markets to our goods. And yet at the same time we slap taxes and tariffs on what they sell to us. The system is rigged so the poorest pay the most.

    1. Give Unto Others: Monkeys Give Food To Those Who Give Food Back, Alphagalileo & Proc. Biol. Sc. Next Article Bookmark and Share

      Abstract: Altruistic food giving among genetically unrelated individuals is rare in nature. The few examples that exist suggest that when animals give food to unrelated others, they do so on the basis of mutualistic or reciprocally altruistic relationships. We present results of four experiments designed to tease apart the factors mediating food giving among genetically unrelated cotton-top tamarins, a cooperatively breeding New World primate. Results show that tamarins altruistically give food to genetically unrelated conspecifics, discriminate between altruistic and selfish actions, and give more food to those who give food back. Tamarins therefore have the psychological capacity for reciprocally mediated altruism.

  8. Evolution Of Cooperation And Conflict In Experimental Bacterial Populations, Nature Next Article Bookmark and Share

    Excerpts: A fundamental problem in biology is the evolutionary transition from single cells to multicellular life forms. During this transition the unit of selection shifts from individual cells to groups of cooperating cells. Although there is much theory, there are few empirical studies. Here we describe an evolutionary transition that occurs in experimental populations of Pseudomonas fluorescens propagated in a spatially heterogeneous environment. Cooperating groups are formed by over-production of an adhesive polymer, which causes the interests of individuals to align with those of the group.

    1. Evolution Of Novel Cooperative Swarming In The Bacterium Myxococcus Xanthus, Nature Next Article Bookmark and Share

      Excerpts: Cooperation among individuals is necessary for evolutionary transitions to higher levels of biological organization. In such transitions, groups of individuals at one level (such as single cells) cooperate to form selective units at a higher level (such as multicellular organisms). Though the evolution of cooperation is difficult to observe directly in higher eukaryotes, microorganisms do offer such an opportunity. Here we report the evolution of novel cooperative behaviour in experimental lineages of the bacterium Myxococcus xanthus.

    2. Defective Or Effective? Mutualistic Interactions Between Virus Genotypes, Alphagalileo & Proc. Biol. Sc. Next Article Bookmark and Share

      Abstract: Deceitful viruses (known as defective viruses) can dump some of their genes, a process that allows them to replicate more quickly. To overcome this loss they steal the proteins necessary for replication and transmission produced by other honest members of the group. We show that defective viruses are present in natural populations of an insect virus. Complete (honest) genotypes help defective genotypes to transmit themselves. In exchange, defective viruses increase the pathogenicity of mixtures containing defective and complete genotypes. Complete genotypes are therefore more likely to be transmitted when accompanied by deceitful companions.

  9. Self-Organization of Cognitive Performance, Journal of Experimental Psychology: General Next Article Bookmark and Share

    Abstract: Background noise is the irregular variation across repeated measurements of human performance. Background noise remains after task and treatment effects are minimized. Background noise refers to intrinsic sources of variability, the intrinsic dynamics of mind and body, and the internal workings of a living being. Two experiments demonstrate 1/f scaling (pink noise) in simple reaction times and speeded word naming times, which round out a catalog of laboratory task demonstrations that background noise is pink noise. Ubiquitous pink noise suggests processes of mind and body that change each other's dynamics. Such interaction-dominant dynamics are found in systems that self-organize their behavior. Self-organization provides an unconventional perspective on cognition, but this perspective closely parallels a contemporary interdisciplinary view of living systems.

  10. Gene Regulation: RNA To The Rescue?, Nature Next Article Bookmark and Share

    Excerpts: The term RNAi was coined just five years ago, in a paper documenting the phenomenon in the nematode worm Caenorhabditis elegans1. Yet doctors and biotech executives are now talking about beginning human trials within the next two or three years - an astonishing rate of progress. Part of the excitement stems from the knowledge that, unlike techniques such as gene therapy, RNAi is a natural defence mechanism that is thought to have evolved to protect organisms from viral diseases.

    1. Cell Plasticity: Flexible Arrangement, Nature Next Article Bookmark and Share

      Excerpts: Until recently it was generally thought that cells move forwards along their respective differentiation paths, but never backwards, and certainly do not jump from one path to another. This dogma of unidirectional, hierarchical cell lineages in tissue development, maintenance and repair is explained by the action of irreversible gene restrictions. As cells differentiate in a lineage, genes that might be required for other pathways are irreversibly repressed. However, exceptions to the loss of plasticity associated with such lineage restrictions have long been recognized in disease and repair

  11. Soundless Music Shown to Produce Weird Sensations, Reuters Next Article Bookmark and Share

    Excerpts: Mysteriously snuffed out candles, weird sensations and shivers down the spine may not be due to the presence of ghosts in haunted houses but to very low frequency sound that is inaudible to humans. British scientists have shown in a controlled experiment that the extreme bass sound known as infrasound produces a range of bizarre effects in people including anxiety, extreme sorrow and chills -- supporting popular suggestions of a link between infrasound and strange sensations.

  12. Science Of Waves May Unlock Surfing Secrets, New Zealand Herald Next Article Bookmark and Share

    Excerpts: He [De Mestre, Ed.] knows of no other mathematicians who share his passion. "There are so few scientists who surf," he lamented. Five to 10 years seems a long time, but it is, he says, a complex science. "People have been studying coastal engineering for decades, and are still trying to understand what happens when waves hit the shore." De Mestre has conducted experiments with subjects including logs, Barbie dolls and "flexible humans", and has already published a preliminary paper.

  13. The Legacy of Biosphere 2 for the Study of Biospherics and Closed Ecological Systems, Advances in Space Research Next Article Bookmark and Share

    Excerpt: The unprecedented challenges of creating Biosphere 2, the world's first laboratory for biospherics, the study of global ecology and long-term closed ecological system dynamics, led to breakthrough developments in many fields, and a deeper understanding of the opportunities and difficulties of material closure. This paper will review accomplishments and challenges, citing some of the key research findings and publications that have resulted from the experiments in Biosphere 2.

  14. Distributed Climate Model Aims For Errors, NewScientist Next Article Bookmark and Share

    Excerpts: A new distributed computing project is aiming to put error bars on the global warming predictions made by computer models of the Earth's climate. Until now, a lack of computing power has meant the complex models could only be run a small number of times. But many repetitions are needed to assess the uncertainty in, for example, a predicted rise in temperature. The project, called climateprediction.net, was launched on Friday and hopes to provide the computing power required by using the spare computer time of thousands of volunteers.

  15. Venus Possibly Habitable For Billions Of Years, NewScientist Next Article Bookmark and Share

    Excerpts: The hellish climate of Venus may have arisen far more recently than previously supposed, suggests new research. If so, pleasant Earth-like conditions probably persisted for two billion years after the planet's birth - plenty of time for life to have developed. Venus is virtually the same size as Earth and, on average, is our nearest neighbour. Today, its atmospheric temperatures are hot enough to melt lead and concentrated sulfuric acid continuously drizzles down from thick sulphurous clouds that completely block out the Sun.

    1. Suffocation Suspected For Greatest Mass Extinction, NewScientist Next Article Bookmark and Share

      Excerpts: The oxygen-starved aftermath of an immense global belch of methane left land animals gasping for breath and caused the Earth's largest mass extinction, suggests new research. Greg Retallack, an expert in ancient soils at the University of Oregon in Eugene, says his theory also explains the mysterious survival of a barrel-chested reptile that became the most common animal on the planet after the end of the Permian period, 251 million years ago. (...) There is no evidence for a large asteroid impact, but sharp changes in carbon isotope ratios (...).

    2. Allee Effects, Extinctions, And Chaotic Transients In Simple Population Models, Theor. Population Biol. Next Article Bookmark and Share

      Abstract: Discrete time single species models with overcompensating density dependence and an Allee effect due to predator satiation and mating limitation are investigated. The models exhibit four behaviors: persistence for all initial population densities, bistability in which a population persists for intermediate initial densities and otherwise goes extinct, extinction for all initial densities, and essential extinction in which "almost every" initial density leads to extinction. For fast-growing populations, these models show populations can persist at high levels of predation (...) the mechanism behind these disappearances are chaotic dynamics driving populations below a critical threshold determined by the Allee effect.

  16. Quantum Physics: Entanglement Hits The Big Time, Nature Next Article Bookmark and Share

    Excerpts: Entanglement is a quantum phenomenon usually associated with the microscopic world. Now it is clear that its effects are also relevant on macroscopic scales, such as in the magnetic properties of some solids. (...) display an excess of correlations between the individual magnets (...) they could be entangled. (...) presence of this entanglement can make a difference in observed macroscopic quantities. As the quantum correlations are stronger than classical ones, we can predict that the susceptibility will be higher according to quantum mechanics. This is indeed demonstrated (...).

    1. Biomolecule Behaves Like A Wave, Physics Web Next Article Bookmark and Share

      Excerpts: Physicists at the University of Vienna in Austria have observed wave-particle duality in a biomolecule for the first time. The team also reports observing wave-like behaviour in the most massive molecule yet - a fluorinated 'buckyball'. It is twice as large as the previously biggest molecule known to exhibit quantum wave-like behaviour. (...) These biological molecules are present in chlorophyll and haemoglobin. They have a diameter of about 2 nm (figure 1), which is over twice as big as a carbon-60 molecule.

    2. Wave Nature of Biomolecules and Fluorofullerenes, Phys. Rev. Lett. Next Article Bookmark and Share

      Abstract: We demonstrate quantum interference for tetraphenylporphyrin, the first biomolecule exhibiting wave nature, and for the fluorofullerene C60F48 using a near-field Talbot-Lau interferometer. For the porphyrins, which are distinguished by their low symmetry and their abundant occurrence in organic systems, we find the theoretically expected maximal interference contrast and its expected dependence on the de Broglie wavelength. For C60F48, the observed fringe visibility is below the expected value, but the high contrast still provides good evidence for the quantum character of the observed fringe pattern. The fluorofullerenes therefore set the new mark in complexity and mass (1632 amu) for de Broglie wave experiments, exceeding the previous mass record by a factor of 2.

  17. Dissipationless Quantum Spin Current at Room Temperature, Science Next Article Bookmark and Share

    Excerpts: (...) the transport of energy and information in most devices is an irreversible process. It is this irreversibility that leads to intrinsic dissipations in electronic devices and limits the possibility of quantum computation. We theoretically predict that the electric field can induce a substantial amount of dissipationless quantum spin current at room temperature, (...). Principles found here could enable quantum spintronic devices with integrated information processing and storage units, operating with low power consumption and performing reversible quantum computation.

    1. Scientists Forge Ahead With Domestication Of Molecules, MIT News Next Article Bookmark and Share

      Excerpts: Thousands of years after humans domesticated farm animals, they're moving on to a different sort of workhorse: molecules. "About 10,000 years ago, man began to domesticate plants and animals. Now it's time to domesticate molecules," (...). Lindquist studies yeast proteins to learn what makes them fold into the shapes they take and how to get them to fold differently to create new structures. Scientists have found that misfolded proteins called prions can influence the fate of cells, causing the daughter cells to create the same prions, which are believed to be a major culprit in amyloid diseases such as Alzheimer's, mad cow disease and scrapie, and may be a factor in smallpox.

  18. Detecting Chemical Threats With 'Intelligent' Networks, ScienceDaily Next Article Bookmark and Share

    Excerpts: Prototype microsensor arrays connected to artificial neural networks--computer models that "learn"--can reliably identify trace amounts of toxic gases in seconds, well before concentration levels become lethal, (...). The system has the potential to provide cost-effective early warning of chemical warfare agents. Lab experiments show that the sensors, which use NIST-patented microheater technology, can detect compounds such as sulfur-mustard gas and nerve agents (tabun and sarin) at levels below 1 part per million. The neural networks, which currently run on a personal computer (...).

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

    1. Finding the Face of Terror in Data, NYTimes Next Article Bookmark and Share

      Excerpts: The amount of data available to the federal government far exceeds the human capacity to analyze it. (...) In January 2002 the Defense Advanced Research Projects Agency, (...), established an Information Awareness Office to focus on technologies to help counter terrorism. We established a new research and development program, now called the Terrorism Information Awareness program, to test ways to find information faster, share information across agencies, aid in conducting analysis and enable better decision-making. The goal is to help the government "connect the dots" and prevent foreign terrorist attacks.

    2. Plans for Terror Inquiries Still Fall Short, Report Says, NYTimes Next Article Bookmark and Share

      Excerpts: The Justice Department, criticized for its treatment of hundreds of illegal immigrants jailed after the terrorist attacks of Sept. 11, 2001, has not done enough to avoid a repeat by spelling out clear criteria for determining who is considered a terrorist suspect, (...). (...) the Justice Department inspector general's office said federal authorities had not developed adequate plans for classifying illegal immigrants arrested in terror investigations to ensure that those with no ties to terrorism would be cleared quickly and adequate F.B.I. resources would be devoted to such investigations.

    3. Questions Grow on Pakistan's Commitment to Fight Taliban, NYTimes Next Article Bookmark and Share

      Excerpts: Two years after the Sept. 11 attacks, questions are growing about whether Pakistan, a crucial American ally in the campaign against terrorism, is mounting a sincere effort to crack down on a resurgent Taliban and other Islamic militants. (...) But members of the Afghan government and some Pakistani political and intelligence officials suggest that Pakistan is not doing all it could to stop Taliban forces from using its territory to attack Afghan territory, and that some elements of Pakistan's army are harboring Taliban and Qaeda members.

  20. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. "Media on Terror", (9/11/03), interview with Stephen Hess and Marvin Kalb; NPR's Morning Edition
      2. Networking from the Rooftop, Erico Guizzo, 03/08/29, Technology Review
      3. Scientists Highlight Fish 'Intelligence', Fish are socially intelligent creatures who do not deserve their reputation as the dim-wits of the animal kingdom, 03/08/31, BBC News
      4. Eyeing The Perfect Pitch , Martin Miller, 03/09/02, Los Angeles Times
      5. President Bush Addressed the Nation Sunday Night , 03/09/07, Address of the President to the Nation The Cabinet Room
      6. Define Paradox? A Leading School, Below Standard, The appearance of schools that some see as urban successes on the state's list of failing schools exemplifies the new yardstick used by the federal No Child Left Behind law. Elissa Gootman, 03/09/12, NYTimes
      7. Middle East Math, To ensure its survival, Israel must implement a radical shift in tactics that includes abandoning the West Bank settlements., 03/09/12, NYTimes
      8. A Matrix Perturbation View Of The Small World Phenomenon, D. J. Higham, 2003, DOI: 10.1137/S0895479802406142
      9. Web Page Feature Selection and Classification Using Neural Networks, Ali Selamat, Sigeru Omatu, 2003-09-04, Information Sciences, Article in Press, Uncorrected Proof, DOI: 10.1016/j.ins.2003.03.003
      10. Social Networks and Web Minorities, Marco Gori, Teresa Numerico, 2003-12, Cognitive Systems Research 4(4):355-364, DOI: 10.1016/S1389-0417(03)00016-0
      11. Trade-Offs And The Evolution Of Virulence Of Microparasites: Do Details Matter?, V. V. Ganusov - vganusoaemory.edu & r. antia, 2003/07/09, DOI: 10.1016/S0040-5809(03)00063-7
      12. Colony Response To Graded Resource Changes: An Analytical Model Of The Influence Of Genotype, Environment, And Dominance, S. M. Bertram - sbertramaasu.edu, r. gorelick & j. h. fewell, 2003/07/09, DOI: 10.1016/S0040-5809(03)00064-9
      13. Electrical Signaling In The Olfactory Bulb, G. Lowe - lowegamonell.org, 2003/07/15, DOI: 10.1016/S0959-4388(03)00092-8
      14. Neuronal Mechanisms For The Perception Of Ambiguous Stimuli, A. J Parker - andrew.parkeraphysiol.ox.ac.uk & k. krug, 2003/08/02, DOI: 10.1016/S0959-4388(03)00099-0
      15. Itinerant Memory Dynamics And Global Bifurcations In Chaotic Neural Networks, H. Kitajima, K. Aihara & H. Kawakami, 2003/08/22, DOI: 10.1063/1.1601912
      16. A Challenge To Chaotic Itinerancy From Brain Dynamics, L. M. Kay, 2003/08/22, DOI: 10.1063/1.1596071
      17. Visual Motion Retards Alternations Between Conflicting Perceptual Interpretations, R. Blake - randolph.blakeavanderbilt.edu, k. v. sobel & l. a. gilroy, 2003/08/30
      18. Hypoxia In Paradise: Widespread Hypoxia Tolerance In Coral Reef Fishes, G. E. Nilsson & S. O. Nilsson, 2003/09/08
      19. Designing A Better Catalyst For 'Artificial Photosynthesis', 2003/09/10, ScienceDaily & Brookhaven National Lab.
      20. Jefferson And Brigham And Women's Researchers Find Blue Light Important For Setting Biological Clock, 2003/09/11, ScienceDaily & Thomas Jefferson Univ.
      21. Cannibalism In An Age-Structured Predator-Prey System, C. Kaewmanee & I. M. Tang - scimtamahidol.ac.th, 2003/09/15, DOI: 10.1016/S0304-3800(03)00190-X
      22. Are The Electroencephalograms Mainly Rhythmic? Assessment Of Periodicity In Wide-Band Time Series, T. H. Bullock - tbullockaucsd.edu, m. c. mcclune & j. t. enright, 2003/09/26, DOI: 10.1016/S0306-4522(03)00208-2
      23. Olfactory Perceptual Learning: The Critical Role Of Memory In Odor Discrimination, D. A. Wilson - dwilsonaou.edu & r. j. stevenson, Jun. 2003, DOI: 10.1016/S0149-7634(03)00050-2
      24. Neural Net Tracks Skin Color, A. Cockburn, Sep. 10/17, 2003

    2. Webcast Announcements Next Article Bookmark and Share

      1. The Semantic Web and Language Technology - Its Potential and Practicalities,, Bucharest, Romania, 03/07/28-08/08
      2. Fair Value; The Good, The Bad, and The Unknown, Financial Executives International (FEI), 03/08/26, 5:00-6:00 p.m. GMT
      3. 13th Ann Intl Conf, Soc f Chaos Theory in Psych & Life Sciences, Boston, MA, USA, 2003/08/08-10
      4. IMA International Conference Bifurcation 2003, Univ. Southampton, UK, 27-30 July, 2003
      5. New Santa Fe Institute President About His Vision for SFI's Future Role, (Video, Santa Fe, NM, 03/06/04)
      6. SPIE's 1st Intl Symp on Fluctuations and Noise, Santa Fe, NM, 2003/06/01-04
      7. NAS Sackler Colloquium on Mapping Knowledge Domains, Video/Audio Report, 03/05/11
      8. Uncertainty and Surprise: Questions on Working with the Unexpected and Unknowable, The University of Texas Austin, Texas USA, 2003/04/10-12
      9. 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

      10. Edge Videos
      11. Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998

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

      1. Thematic Institute "Networks and Risks", Budapest, Hungary, 03/08/25 - 09/27
      2. Executive Leadership in a Changing Environment, Washington, DC, 03/09/07-12, 03/10/05-10
      3. 7th European Conference on Artificial Life (ECAL-2003), Dortmund, Germany, 2003/09/14-17
      4. A Dual International Conference on Ethics, Complexity & Organisations & Creativity, London, UK, 2003/09/17-18
      5. Innovative Clusters- A New Challenge, Competitive Institute 6th Global Conference, Gothenburg, Sweden, 03/09/17-19
      6. 1st German Conference on Multiagent System Technologies (MATES'03), Erfurt, Germany, 2003/09/22-25
      7. Dynamics Days 2003, XXIII Annual Conference, 4 Decades of Chaos 1963-2003, Palma de Mallorca, Spain, 03/09/24-27
      8. Improving The NHS Through The Lens Of Complexity, U Exeter, UK, 03/09/24-26
      9. Emerging Technologies Conference at MIT, Cambridge, MA, 2003/09/24-25
      10. Exystence Thematic Institute - Algorithms And Challenges In Hard Combinatorial Problems, Turin, Italy, 03/10/01-30
      11. Intl School Mathematical Aspects of Quantum Chaos II Quantum Chaos on Hyperbolic Manifolds, Schloss Reisensburg (Gunzburg, Germany), 03/10/04-11
      12. European Workshop on The Analysis of Microfabrics in Geomaterials, Munchen, Germany, 03/10/06-11
      13. 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

      14. Intl Congress on Computational Intelligence, Medellin, Colombia, 03/11/06-08,(Mirror)
      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. 3rd Intl Conf on Systems Thinking in Management (ICSTM 2004) "Transforming Organizations to Achieve Sustainable Success", Philadelphia, Pennsylvania, USA, 04/05/19-21
      28. 9th Annual Workshop on Economics and Heterogeneous Interaction Agents (WEHIA04),, Kyoto, Japan, 2004/05/27-29
      29. 13th International Symposium on HIV & Emerging Infectious Diseases, Toulon, France, 04/06/03-05
      30. From Animals To Animats 8, 8th Intl Conf On The Simulation Of Adaptive Behavior (SAB'04), Los Angeles, USA, 04/07/13-17

    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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