Complexity Digest 2004.14

05-Apr-2004

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Content

  1. Braving Bullying Hecklers, Simulants Run for President, NY Times
  2. Modelling Learning and R&D in Innovative Environments: a Cognitive Multi-Agent Approach, JASSS
    1. Knowledge Creation Facing Hierarchy: the Dynamics of groups inside the Firm, JASSS
    2. Small World Dynamics and The Process of Knowledge Diffusion: The Case of The Metropolitan Area of Greater Santiago De Chile, JASSS
  3. Pricing Less Competitive Online, NPR Audio
  4. Phase Shifts, J Investment Management
  5. Human Evolution: The Primate Bite: Brawn Versus Brain?, Science
    1. Evolution's Lost Bite: Gene Change Tied To Ancestral Brain Gains, Science News
  6. Learning Theory: Past Performance And Future Results, Nature
    1. General Conditions For Predictivity In Learning Theory, Nature
  7. Neuroscience: The Sweet Smell Of Success, Nature
    1. It's Time! Fetal Lungs Tell Mom When To Deliver Baby, Science News
  8. Cell Bodies In A Cage, Nature
  9. Mathematicians Predict Patterns In Fingerprints And Cacti, ScienceDaily
  10. Signal Processing: Neural Coding By Correlation?, Nature
  11. Quantum Optimally Controlled Transition Landscapes, Science
  12. The Perfect Pitch of Blue Whales, NPR Audio
    1. The Social Lives of Snakes, Science News
    2. A Conceptual Framework For Nonkin Food Sharing: Timing And Currency Of Benefits, Animal Behaviour
    3. Complexity Of Behavioural Sequences And Their Relation To Stress Conditions In Chickens, Appl. Animal Behav. Sc.
  13. Ferns Younger, 'Smarter' Than Believed, NPR Audio
  14. Fossil Illuminates Evolution of Limbs from Fins, Scientific American
  15. New Ways to Control Malaria, Science
  16. Mimicking Viruses May Provide New Way To Defeat Them, ScienceDaily
  17. Unravelling Migrations In The Steppe: Mitochondrial DNA Sequences From Ancient Central Asians, Alphagalileo & Proc. Biol. Sc.
  18. The 'Snowball Effect' and Intel on Iraq's WMDs, NPR ATC
  19. Complex Challenges: Global Terrorist Networks
    1. Simulation of The Dynamic Interactions Between Terror and Anti-Terror Organizational Structures, JASSS
    2. Top Focus Before 9/11 Wasn't on Terrorism, Washington Post
    3. The Iraq War and Global Terrorism, NPR Audio
  20. Links & Snippets
    1. Other Publications
    2. Webcast Announcements
    3. Conference & Call for Papers Announcements

  1. Braving Bullying Hecklers, Simulants Run for President, NY Times Next Article Bookmark and Share

    Excerpts: In this election, the central issue of each candidate's campaign is how to cope with a belligerent group of players called grievers or scammers, who bully newcomers by locking them into boring story lines, stealing their money or even beating them up for the sake of humiliation. The scammers are elusive and their motives are unclear, but their behavior is thought to undercut new players' enthusiasm and diminish the popularity of the game.(...)

    "Some Sims can be vicious. It's just like real life, sort of."

  2. Modelling Learning and R&D in Innovative Environments: a Cognitive Multi-Agent Approach, JASSS Next Article Bookmark and Share

    Abstract: Evolutionary arguments are an appropriate approach to the analysis of industry dynamics in a knowledge-based economy, because they can deal properly with innovation processes, technological change, path-dependence and knowledge. But in order to formalise all of this verbal accounting, researchers need methodological tools which support their theoretical analysis. In this paper we suggest some of the main requirements for computer simulation to have the same standing as the traditional tools used by neoclassical economists. Among others, aggregated behaviour should emerge from micro-foundations, economic agents should exhibit bounded rational behaviour, learning must be endogenous and human learning should be in agreement with some stylised facts from cognitive science and psychology. We argue that multi-agent systems is a methodology which fulfills some of the requirements above. We also propose an alternative way for modelling cognitive learning in evolutionary environments, which is in agreement with some basic concepts from cognitive science. Agents are endowed with both declarative and procedural knowledge. We have used our approach to build evolutionary models of innovative industries, where firms learn how to change their decisions about R&D budget, production, technology, etc. We refer as well to some applications using the same framework to model behavioural financial markets, economic geography and water resource management.

    1. Knowledge Creation Facing Hierarchy: the Dynamics of groups inside the Firm, JASSS Next Article Bookmark and Share

      Abstract: The aim of the paper is to analyze the selection of routines within organizational structures characterized by different cognitive representations. Following a brief discussion on the role of hierarchy and the related problem of organizational practice selection in the evolutionary literature, we model the interactions between different groups within a firm trying to interfere with its coordination mechanisms in order to support their own idiosyncratic practices. Numerical simulations highlight differences in the ability to learn in different organizational set-ups with diverse patterns of knowledge distribution, also reproducing configurations analysed in the empirical literature. It is shown that networking schemes are the more profitable organizational configurations because of their dynamics of learning, although they are very sensitive to the truce problem.

    2. Small World Dynamics and The Process of Knowledge Diffusion: The Case of The Metropolitan Area of Greater Santiago De Chile, JASSS Next Article Bookmark and Share

      Abstract: This paper aims to understand some of the mechanisms which dominate the phenomenon of knowledge diffusion in the process that is called 'interactive learning'. We examine how knowledge spreads in a network in which agents have 'face-to-face' learning interactions. We define a social network structured as a graph consisting of agents (vertices) and connections (edges) and situated on a grid which resembles the geographical characteristics of the metropolitan area of Greater Santiago de Chile. The target of this simulation is to test whether knowledge diffuses homogeneously or whether it follows some biased path generating geographical divergence between a core area and a periphery. We also investigate the efficiency of our 'preference' model of agent decision-making and show that this system evolves towards a small-world type network.

  3. Pricing Less Competitive Online, NPR Audio Next Article Bookmark and Share

    Excerpts: A study by MIT finds that the Internet, where customers can easily comparison shop, is actually less price competitive than traditional store retailers. The researchers spent 15 months gathering 8,000 online price comparisons of books and music CDs.

  4. Phase Shifts, J Investment Management Next Article Bookmark and Share

    Abstract: The physical world is composed of phase shifts, and we generally accept and understand the implications. The failure to recognize a phase shift that has taken place is exemplified by the perception of investment people about where they stand in the world . . . even what they stand for. I was part of the first AIMR group to embrace performance standards that implies phase shifts do not take place. We complain about fair disclosure thinking it might inhibit access, but access comes at the price of acquiescence, a coin of our clients that we have been willing to pay for them. We should be willing to adopt high standards of personal behavior, such as classifying ourselves as insiders with respect to our personal investment accounts. ( Full text )
    • Source: Phase Shifts, DEAN LEBARON,, J Investment Management, Vol. 1, No. 2, 2003

  5. Human Evolution: The Primate Bite: Brawn Versus Brain?, Science Next Article Bookmark and Share

    A change in a single muscle protein may have been a key step in the evolution of modern humans, according to a new theory. A mutation in a myosin gene 2.4 million years ago made the protein less effective. Because of this change, primates' massive jaw muscles shrank, (...), making possible a threefold expansion of the brain.

    (...)But some experts in human origins scoff at it. "To suggest that the brain is constrained by chewing muscles is just rubbish,"(...).

    1. Evolution's Lost Bite: Gene Change Tied To Ancestral Brain Gains, Science News Next Article Bookmark and Share

      Excerpts: In a controversial new report, a research team proposes that an inactivating gene mutation unique to people emerged around 2.4 million years ago and, by decreasing the size of jaw muscles, set the stage for brain expansion in our direct ancestors.

  6. Learning Theory: Past Performance And Future Results, Nature Next Article Bookmark and Share

    Excerpts: Learning from experience is hard, and predicting how well what we have learned will serve us in the future is even harder. The most useful lessons turn out to be those that are insensitive to small changes in our experience.

    A hallmark of intelligent learning is that we can apply what we have learned to new situations. In the mathematical theory of learning, this ability is called generalization. On page 419 of this issue, Poggio et al. formulate an elegant condition for a learning system to generalize well.

    1. General Conditions For Predictivity In Learning Theory, Nature Next Article Bookmark and Share

      Excerpts: A milestone in learning theory1-5 was a characterization of conditions on the hypothesis space that ensure generalization for the natural class of empirical risk minimization (ERM) learning algorithms that are based on minimizing the error on the training set. Here we provide conditions for generalization in terms of a precise stability property of the learning process: when the training set is perturbed by deleting one example, the learned hypothesis does not change much. This stability property stipulates conditions on the learning map rather than on the hypothesis space, (...).

  7. Neuroscience: The Sweet Smell Of Success, Nature Next Article Bookmark and Share

    Excerpts: Such individual differences in sensitivity to smells are thought to be the result of variations between olfactory receptors - (...). We have hundreds of distinct receptors, which between them can distinguish thousands of different chemicals. But without a clear understanding of how this information is encoded by olfactory receptors, scientists have made little progress in determining how our brain perceives complex fragrances such as 'chocolate' or 'freshly baked bread'.

    "The mammalian nose is the best chemical detector in the world, yet we still don't understand how it codes," (...).

    1. It's Time! Fetal Lungs Tell Mom When To Deliver Baby, Science News Next Article Bookmark and Share

      Excerpts: One of the central unresolved questions in mammalian biology is how a mother knows when to give birth. Scientists studying mice have now found evidence that the maturing lungs of a fetus release a protein that initiates the process.

      If also true in women, the finding could provide insight into the causes of premature births and suggest ways of preventing them. About 6 to 10 percent of all pregnancies end with prematurely born babies, who frequently struggle to survive even with intensive medical care.

  8. Cell Bodies In A Cage, Nature Next Article Bookmark and Share

    Excerpts: To harmonize all these diverse cytological observations of eukaryotic forms, a discrete subcellular element is required that will take over from the cell as the fundamental unit, not only of eukaryotic structure, but as a propagule of life itself. One possible candidate is the 'cell body' which was proposed for animal cells by the late Daniel Mazia in 1993. The 'cell body' comprises the nucleus and a set of perinuclear radiating microtubules, and can be regarded as the basic unit of eukaryotic life, being both autonomous and self-reproducing.
    • Source: Cell Bodies In A Cage, Frantiek Baluka, Dieter Volkmann, Peter W. Barlow, DOI: 10.1038/428371a, Nature 428, 371, 04/03/25

  9. Mathematicians Predict Patterns In Fingerprints And Cacti, ScienceDaily Next Article Bookmark and Share

    Excerpts: Patterns in nature can be seen every day, yet in many cases, little is understood about how and why they form. (...) developed a mathematical model that can reproduce fingerprint patterns, while (...) created a mathematical model to explain the arrangement of repeated units in various plants. Even though the use of fingerprints for identification began more than 2000 years ago in China and they have been studied experimentally for over two hundred years, there is no widely accepted explanation for their occurrence. Likewise, the reasons behind nature's choice of patterns in plants have been difficult for mathematicians to explain, (...).

  10. Signal Processing: Neural Coding By Correlation?, Nature Next Article Bookmark and Share

    Excerpts: A spike train can be represented by the sequence of intervals between spikes; this is characterized by the interval statistics (in the time domain by probability distributions and correlations, and in the frequency domain by spectral densities). Chacron et al.1 consider two schemes of spike generation. The first produces a 'renewal process' that has no memory of the excitation because the system resets itself each time a spike is generated. (...)

  11. Quantum Optimally Controlled Transition Landscapes, Science Next Article Bookmark and Share

    Excerpts: A large number of experimental studies and simulations show that it is surprisingly easy to find excellent quality control over broad classes of quantum systems. We now prove that for controllable quantum systems with no constraints placed on the controls, the only allowed extrema of the transition probability landscape correspond to perfect control or no control. Under these conditions, no suboptimal local extrema exist as traps that would impede the search for an optimal control. The identified landscape structure is universal (...).

  12. The Perfect Pitch of Blue Whales, NPR Audio Next Article Bookmark and Share

    Excerpts: NPR's Linda Wertheimer talks to Jim Metzner, host and producer of the radio program Pulse of the Planet about the various sounds blue whales make, and how they all "sing" on the exact same pitch, four octaves below middle C.

    1. The Social Lives of Snakes, Science News Next Article Bookmark and Share

      Excerpts:
      BABY RATTLER. A newborn pygmy rattlesnake isn't very big, so the continued presence of its mother during the first days of its life may offer protection.
      ©Peter May
      Does the mother's presence help the newborns? Because the little snakes don't see well through their soon-to-be-shed skin and can't muster the striking force of a grown-up, the lingering mother might be deterring predators. Also, her large body might keep the young ones warm.

      Despite the plausibility of such benefits, Greene doesn't use the term "parental care" for the mother snake's apparent solicitude; she calls it "maternal attendance." Also, the benefits of the mother's vigilance haven't been tested, he points out.

    2. A Conceptual Framework For Nonkin Food Sharing: Timing And Currency Of Benefits, Animal Behaviour Next Article Bookmark and Share

      Abstract: Many animal species, from arthropods to apes, share food. This paper presents a new framework that categorizes nonkin food sharing according to two axes: (1) the interval between sharing and receiving the benefits of sharing, and (2) the currency units in which benefits accrue to the sharer (especially food versus nonfood). Sharers can obtain immediate benefits from increased foraging efficiency, (...). When benefits are delayed or when food is exchanged for nonfood benefits, maintaining sharing can become more difficult because animals face discounting and currency conversion problems. The immediate, selfish fitness benefits that a sharer may gain through by-product or manipulative mutualism, (...).

    3. Complexity Of Behavioural Sequences And Their Relation To Stress Conditions In Chickens, Appl. Animal Behav. Sc. Next Article Bookmark and Share

      Abstract: A complexity analysis was performed on the behaviour time series of four groups of seven chickens (Gallus gallus domesticus) using (...) quantifies the fractal-like correlation properties of behaviour sequences on short time scales (seconds) over active periods of approximately 0.5 h (2050 s). In this study the level of randomization of locomotor and resting sequences was related to the rearing conditions of chickens. The complexity of locomotor sequences decreased with high stress (food limitation). Adding a sand substrate increased the complexity of other activities (...). Under stress it appeared that there was not enough energy to perform complex adult behaviour.

  13. Ferns Younger, 'Smarter' Than Believed, NPR Audio Next Article Bookmark and Share

    Excerpts: Scientists have long believed ferns evolved way before flowering plants appeared, and have been evolutionary dead ends ever since. But new findings in the journal Nature suggest the arrival of flowering plants actually stimulated ferns to evolve and thrive.

  14. Fossil Illuminates Evolution of Limbs from Fins, Scientific American Next Article Bookmark and Share

    Excerpts:
    Image: COURTESY OF KALLIOPI MONOYIOS
    For example, compared with the anatomy of other tetrapods of the same age there is a large space for chest muscle attachment, the scientists report. This added brawn would have enabled a motion similar to a benchpress or push-up. Based on the apparent size and extent of the muscles, the authors posit that the humerus played a significant role in the support and movement of the animal.

    The findings indicate that the ability to prop up the body is more ancient than previously believed.

  15. New Ways to Control Malaria, Science Next Article Bookmark and Share

    Excerpts: The report by Osta et al. [ HN6] on page 2030 of this issue ( 1]) advances the quest for new methods to control the mosquito vector, an imperative if we are to sustain our position, let alone win the war, against malaria. These authors identify three mosquito genes that control the immune response of Anopheles gambiae [ HN7]], the principal vector of the malaria parasite in Africa. They show that these three genes directly affect development of the rodent malaria parasite, Plasmodium berghei [ HN8]], within the insect gut.

  16. Mimicking Viruses May Provide New Way To Defeat Them, ScienceDaily Next Article Bookmark and Share

    Excerpts: Viruses, often able to outsmart many of the drugs designed to defeat them, may have met their match, according to new research (...). The findings show that the introduction of a harmless molecule that uses the same machinery a virus needs to grow may be a potent way to shut down the virus before it infects other cells or becomes resistant to drugs. "When a virus encounters a susceptible cell, it enters and says, 'I'm now the boss.' It pirates the cell's resources to produce virus progeny that, following release from the host cell, can infect other cells."

  17. Unravelling Migrations In The Steppe: Mitochondrial DNA Sequences From Ancient Central Asians, Alphagalileo & Proc. Biol. Sc. Next Article Bookmark and Share

    Abstract: The vast steppes of Central Asia have been the scene of complex human migrations throughout history. Using ancient DNA techniques, we analysed the mtDNA lineages of human remains from archaeological sites in Kazakhstan dating from the 15th century BC to the 5th century AD. Our results indicated that all mtDNA sequences from individuals dating before 7th-8th century BC had a West Eurasian origin, whereas, after this period, sequences from East Eurasian origin began to appear in ancient Kazakh populations. This supports an ancient West Eurasian origin for Central Asia human populations (...) that was later erased by East Asian migrations to the West.

  18. The 'Snowball Effect' and Intel on Iraq's WMDs, NPR ATC Next Article Bookmark and Share

    Excerpts: The "echo effect," the "snowball effect" and false assumptions -- these were some of the reasons why intelligence agencies around the world were, to use former chief weapons inspector David Kay's phrase, "all wrong" about weapons of mass destruction in Iraq. European intelligence is often derivative of U.S. intelligence, and vice versa, creating trans-Atlantic echoes that seem to corroborate each other. Israeli assessments got analyzed by U.S. intelligence, which tended to bolster the assessment as they were passed on to other governments, creating the snowball effect. And governments around the world assumed that because they could not prove that Iraq destroyed its weapons of mass destruction, Iraq must still have them.

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

    1. Simulation of The Dynamic Interactions Between Terror and Anti-Terror Organizational Structures, JASSS Next Article Bookmark and Share

      Abstract: A discrete-event model of the dynamics of certain social structures is presented. The structures include terrorist organizations, anti-terrorism and terrorism-supporting structures. The simulation shows the process of creating the structures and their interactions. As a result, we can see how the structure size changes and how the interactions work, and the process of destroying terrorist organization links by the anti-terrorist agents. The simulation is agent-oriented and uses the PASION simulation system.

    2. Top Focus Before 9/11 Wasn't on Terrorism, Washington Post Next Article Bookmark and Share

      Excerpts: On Sept. 11, 2001, national security adviser Condoleezza Rice was scheduled to outline a Bush administration policy that would address "the threats and problems of today and the day after, not the world of yesterday" -- but the focus was largely on missile defense, not terrorism from Islamic radicals.

      The speech provides telling insight into the administration's thinking (...). The address was designed to promote missile defense as the cornerstone of a new national security strategy, and contained no mention of al Qaeda, Osama bin Laden (...).
      Editor's Note: In Complexity Digest 2001.37 we point out:

      "Choosing to use knives -weapons not of the 21st century but of biblical times -to gain control over civilian airplanes the terrorists preempted the high-tech multi-billion dollar NMD program."

      It is amazing that even today the same government still wants to sell the same NMD program.

    3. The Iraq War and Global Terrorism, NPR Audio Next Article Bookmark and Share

      Excerpts: NPR's Linda Wertheimer speaks with Rami Khouri, executive editor of Lebanon's Daily Star, about the effect the U.S.-led war against Iraq has had on terrorism worldwide.

  20. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. Complicity: An International Journal of Complexity and Education , publishes scholarly and original research linking complexity and related theories to the field of education at all levels.
      2. Signs of Water Flow: Oceans of data point to ancient Martian sea, 04/03/27, Science News, Vol. 165, No. 13, Also available in Audible format . A robotic rover on Mars has found strong evidence that some rocks near the Martian equator were laid down by a shallow, ancient ocean, indicating one of the most likely places to look for remains of life on the Red Planet.
      3. Miniaturized 3-D Printing: New polymer ink writes tiny structures, 04/03/27, Science News, Vol. 165, No. 13, Also available in Audible format . A new 3-D printer can build up complex polymer microstructures with features small enough for creating photonic crystals or scaffolds for tissue engineering.
      4. Wolf vs. Raven? Thieving birds may drive canines to form big packs, 04/03/27, Science News, Vol. 165, No. 13, Also available in Audible format . A previously underappreciated reason why wolf packs get so big could be the relentless food snitching of ravens.
      5. Fish guts reveal microbial alliance, 04/03/27, Science News, Vol. 165, No. 13, Also available in Audible format . Scientists are studying germfree zebra fish to better understand how microbes influence gut development.
      6. A Techno-Geek's New Car, David Pogue, 04/04/01, NYTimes
      7. Calif. Mob Tries to Create Supercomputer, Terence Chea, 04/04/03, San Jose Mercury News
      8. Evolutionary Ecology in-silico: Evolving Foodwebs, Migrating Population and Speciation, Jose J. Ramasco, S. N. Dorogovtsev, Romualdo Pastor-Satorras, 2004-03-27, arXiv, DOI: q-bio.PE/0403040
      9. Formation and Destruction of Autocatalytic Sets in an Evolving Network Model, Sandeep Krishna, 2004-03-28, arXiv, DOI: nlin.AO/0403050
      10. A Biological Coevolution Model with Correlated Individual-Based Dynamics, Volkan Sevim, Per Arne Rikvold, 2004-03-30, arXiv, DOI: q-bio.PE/0403042
      11. When and Why Does Haggling Occur? Some Suggestions from a Qualitative but Computational Simulation of Negotiation, Bruce Edmonds, David Hales, 2004-03-31, JASSS 7(2)
      12. Seeking Equilibrium Leads to Chaos: Multiple Equilibria Regulation Model, Ioannis D Katerelos, Andreas Koulouris, 2004-03-31, JASSS 7(2)
      13. Applied Evolutionary Economics and Social Simulation, Andreas Pyka, Petra Ahrweiler, 2004-03-31, JASSS 7(2)
      14. Adoption and Use of Electronic Markets: Individual and Collective Learning, Eric Darmon, Dominique Torre, 2004-03-31, JASSS 7(2)
      15. Micro Behavioural Attitudes and Macro Technological Adaptation in Industrial Districts: an Agent-Based Prototype, Riccardo Boero, Marco Castellani, Flaminio Squazzoni, 2004-03-31, JASSS 7(2)
      16. Network Structure and the Diffusion of Knowledge, Robin Cowan, Nicolas Jonard, 2004-06, Journal of Economic Dynamics and Control 28(8):1557-1575, DOI: 10.1016/j.jedc.2003.04.002
      17. Do House Mice Modify Their Foraging Behaviour In Response To Predator Odours And Habitat?, F. Powell - f.powellastudent.unsw.edu.au, P. B. Banks, 2004/02/11, Animal Behaviour, DOI: 10.1016/j.anbehav.2003.08.016
      18. Correlations Between Adult Mimicry And Larval Hostplants In Ithomiine Butterflies, K. R. Willmott, J. L. B. Mallet, 2004/03/29, Alphagalileo & Biology Letters
      19. Breathing With A Mouth Full Of Eggs: Respiratory Consequences Of Mouthbrooding In Cardinalfish, S. O.-Nilsson, G. E. Nilsson, 2004/03/29, Alphagalileo & Proceedings Biological Sciences
      20. Self-assembling Proteins Could Help Repair Human Tissue, 2004/03/29, ScienceDaily & Johns Hopkins University
      21. Tropical Medicine: A Brittle Tool Of The New Imperialism, R. Lane - richard.lanealancet.com, 2004/03/31, Alphagalileo & Lancet
      22. 'Nano-Lightning' Could Be Harnessed To Cool Future Computers, 2004/03/31, ScienceDaily & Purdue University
      23. Web-Based Education Limited By Publishers' Restrictions, G. Bradley - pressabiomedcentral.com, 2004/04/01, Alphagalileo & BioMed Central
      24. Investigation Of Possible Neural Architectures Underlying Information-Geometric Measures, Tatsuno M., Okada M., Apr. 2004, Neural Computation, DOI: 10.1162/089976604322860686
      25. Estimating The Entropy Rate Of Spike Trains Via Lempel-Ziv Complexity, Amigó J. M., Szczepaski J., Wajnryb E., Sanchez-V. M. V., Apr. 2004, Neural Computation, DOI: 10.1162/089976604322860677
      26. The Shape Of Neural Dependence, Jenison R. L., Reale R.A., Apr. 2004, Neural Computation, DOI: 10.1162/089976604322860659
      27. Do Multinationals Standardise Or Localise? The Cross-Cultural Dimensionality Of Product-Based Web Sites, Okazaki S., Feb. 2004, Internet Research: Electronic Networking Applications and Policy, DOI: 10.1108/10662240410516336
      28. Personal Factors Affecting Users' Web Session Lengths, Sánchez-F. M. J., Rey J. R-B., Feb. 2004, Internet Research: Electronic Networking Applications and Policy, DOI: 10.1108/10662240410516327
      29. Assisting The Searcher: Utilizing Software Agents For Web Search Systems, Jansen B. J., Pooch U., Feb. 2004, Internet Research: Electronic Networking Applications and Policy, DOI: 10.1108/10662240410516291
      30. MPEG Digital Compression And Analogue Videotape: A Comparison Of Moving Images And Electroencephalogram Data In Epileptic Patients, Akazawa K., Kameyama S., Mase R., Yamayaka T., Hashiba M., Mar. 2004, Medical Informatics and the Internet in Medicine, DOI: 10.1080/14639230410001662110
      31. Public Investment And Regional Inequality In Rural China, X. Zhang - x.zhangacgiar.org, S. Fan, online 2004/01/05, Agricultural Economics, DOI: 10.1016/j.agecon.2002.09.003
      32. Sociability And The Willingness Of Individual Sheep To Move Away From Their Companions In Order To Graze, Angela M. S - angela.sibbaldamacaulay.ac.uk, Russell J. H., online 2004/01/16 Applied Animal Behaviour Science, DOI: 10.1016/j.applanim.2003.11.010
      33. Complexity: An Energetics Agenda: Energy As The Motor Of Evolution, E. J. Chaisson - eric.chaissonatufts.edu, Online:2004/03/23, Complexity, DOI: 10.1002/cplx.20009

    2. Webcast Announcements Next Article Bookmark and Share

      1. Voices of Public Intellectuals Lecture Series: Democracy's Response to the Terrorist Threat Now in its fifth year, the Radcliffe Institute Voices of Public Intellectuals lecture series brings issues affecting civic life to a public forum. This year's series of three lectures features experts in the study of terrorism and the prosecution of terrorists to explore the effects of terrorism on democracy. These lectures take place in Cambridge on February 26, March 4, and March 11 at 4 p.m.
      2. World Economic Forum 2004, Davos, Switzerland
      3. The Process of Curricular Review: Redefining a World-Class Education, Benedict Gross, Thomas Bender, Harvard@home, 04/01/21, Dean of Harvard College Benedict Gross discusses Harvard's first comprehensive review of the undergraduate curriculum in almost 3 decades. This program introduces the process of curricular review by presenting two segmented lectures. The first, by Dean Gross, outlines the approach and considerations in undertaking the current review. The second lecture, presented by NYU Professor Thomas Bender, presents a historical perspective on academic culture.
      4. Cancer Biology , NPR Talk of the Nation, 04/01/16, How the spread of cancer is like wound healing gone awry.
      5. Tracking Ebola , NPR Talk of the Nation, 04/01/16, A new study might help scientists predict where Ebola may! strike next.
      6. Animal Thought and Communication, NPR Talk of the Nation, 04/01/16, How do animals think and communicate with each other? And what can studying animals tell us about the evolution of language in humans? In this hour, NPR's Ira Flatow and guests look at thought and communication in apes, gorillas and monkeys. What can non-human primates tell us about communication in humans?
      7. CODIS 2004, International Conference On Communications, Devices And Intelligent Systems, 2004 Calcutta, India, 04/01/09-10
      8. EVOLVABILITY & INTERACTION: Evolutionary Substrates of Communication, Signaling, and Perception in the Dynamics of Social Complexity, London, UK, 03/10/08-10
      9. The Semantic Web and Language Technology - Its Po tential and Practicalities, Bucharest, Romania, 03/07/28-08/08
      10. ECAL 2003, 7th European Conference on Artificial Life, Dortmund, Germany, 03/09/14-17
      11. New Santa Fe Institute President About His Vision for SFI's Future Role, (Video, Santa Fe, NM, 03/06/04)
      12. SPIE's 1st Intl Symp on Fluctuations and Noise, Santa Fe, NM, 2003/06/01-04
      13. NAS Sackler Colloquium on Mapping Knowledge Domains, Video/Audio Report, 03/05/11
      14. 13th Ann Intl Conf, Soc f Chaos Theory in Psych & Life Sciences, Boston, MA, USA, 2003/08/08-10
      15. CERN Webcast Service, Streamed videos of Archived Lectures and Live Events
      16. Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998
      17. Edge Videos

    3. Conference & Call for Papers Announcements Bookmark and Share

      1. Fractal 2004, "Complexity and Fractals in Nature", 8th Intl Multidisciplinary Conf, Vancouver, Canada, 04/04/04-07
      2. 6th German Workshop on Artificial Life 2004 (GWAL-6), Bamberg, Germany, 04/04/14-16
      3. The 9th IEEE Intl Conf on Engineering of Complex Computer Systems, Florence, Italy, 04/04/14-16
      4. Complexity Science and the Exploration of the Emerging World, Austin, TX, 04/04/17
      5. 2004 Advanced Simulation Technologies Conference (ASTC'04), Arlington, VA., USA, 04/04/18-22
      6. NKS (New Kind of Science) 2004 Conference and Minicourse, Boston, Massachusetts, 04/04/22-25
      7. IDS'04 - Intentional Dynamic Systems Symposium, Memphis, TN, USA, 04/04/24-26
      8. New Horizons In Search Theory , Newport, RI, 04/04/26-28
      9. Human Systems Dynamics at Work: Complexity Tools for Today, Minneapolis, Minnesota, 04/04/27-28
      10. Life, a Nobel Story , Brussels, BE, 04/04/28
      11. Urban Vulnerability and Network Failure: Constructions and Experiences of Emergencies, Crises and Collapse, Manchester, UK, 04/04/29-30
      12. Strategic Thinking in a Complex World, Smithsonian Resident Associates Program, 04/05/01-22
      13. What Really Matters ?The Global Forum 2004, Santa Fe, NM, 04/05/02-04
      14. International Conference on the Ontology of Spacetime, Montreal, Quebec, Canada, 04/05/11-14
      15. 5th International Conference on Complex Systems (ICCS2004), Boston, MA, USA, 04/05/16-21
      16. 3rd Intl Conf on Systems Thinking in Management (ICSTM 2004) "Transforming Organizations to Achieve Sustainable Success", Philadelphia, Pa, USA, 04/05/19-21
      17. 4th Intl Conf on Fractals And Dynamic Systems In Geoscience, München, Germany, 04/05/19-22
      18. 9th Annual Workshop on Economics and Heterogeneous Interaction Agents (WEHIA04), Kyoto, Japan, 2004/05/27-29
      19. 13th International Symposium on HIV & Emerging Infectious Diseases, Toulon, France, 04/06/03-05
        20. !
      20. ECC8 Experimental Chaos Conference, Florence, Italy, 04/06/14-17
      21. An Intl Tribute to Francisco Varela, Paris,04/06/18-20
      22. 7th Intl Conf on Linking Systems Thinking, Innovation,Quality, Entrepreneurship and Environment (STIQE), MARIBOR, SLOVENIA, 04/06/24-26
      23. Biannual Meeting Society for Research on Biological Rhythms, Whistler, BC, 04/06/24-26
      24. NAACSOS 2004, North American Association for Computational Social and Organizational Science, Pittsburgh PA, 04/06/27-29
      25. Statphys - Kolkata V An International Conference on Complex Networks: Structure, Function and Processes , Kolkata, India, 04/06/27-30
      26. ICAD 2004 10th International Conference on Auditory Display, Sydney, Australia, 04/07/06-09
      27. 3rd Intl School Topics in Nonlinear Dynamics Discrete Dynamical Systems and Applications , Urbino (Italy), 04/07/07-09
      28. `Perspectives on Nonlinear Dynamics 2004 (PNLD-2004), Chen! nai, India, 04/07/12-15
      29. From Animals To Animats 8, 8th Intl Conf On The Simulation Of Adaptive Behavior (SAB'04), Los Angeles, USA, 04/07/13-17
      30. 14th Annual International Conference The Society for Chaos Theory in Psychology & Life Sciences , Milwaukee, WI, USA, 04/07/15-18
      31. Facing Complexity, Wellington, NZ, 04/07/15-17
      32. Interdisciplinary Colloquium, Security Bytes, Security/Life/Terror , Lancaster, 04/07/17-19
      33. Gordon Research Conference on "Oscillations & Dynamic Instabilities In Chemical Systems", Lewiston, ME, 04/07/18-23
      34. 3rd Intl Conf Autonomous Agents & Multi-Agent Systems Conference (AAMAS 2004), New York City, 04/07/19-23
        1. 7th Intl Workshop on: Trust in Agent Societies , New York City, 04/07/19-20
      35. 8th World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Florida, USA, 04/07/18-21
      36. 2004 Summer Simulation MultiConference (SummerSim'04), San Jose Hyatt, San Jose, California, 04/07/25-29
      37. SME 2004 Symposium on Modeling and Control of Economic Systems , University in Redlands, CA, 04/01/28-31
      38. 6th International Mathematica Symposium (IMS 2004), Banff, Canada, 04/08/02-06
      39. Fractals and Natural Hazards at 32nd Intl Geological Congress (IGC), Florence, Italy, 04/08/20-28
      40. ICCC 2004, IEEE International Conference on Computational Cybernetics, , Vienna, Austria, 04/08/30-09/01
      41. ANTS 2004, 4th International Workshop on Ant Colony Optimization and Swarm Intelligence, Brussels, Belgium, 04/09/05-08
      42. Dynamic Ontology, An Inquiry into Systems, Emergence, Levels of Reality, and Forms of Causality, Trento, Italy, 04/09/08-11
      43. 9th Intl Conf on the Simulation and Synthesis of Living Systems (ALIFE9), Boston, Massachusetts, 04/09/12-15
      44. The Verhulst 200 on Chaos, Brussels, BELGIUM, 04/09/16-18
      45. The 8th Intl Conf on Parallel Problem Solving from Nature (PPSN VIII), Birmingham, UK, 04/09/18-22
      46. XVII Brazilian Symposium on Artificial Intelligence, Sao Luis, Maranhao - Brazil, 04/09/22-24
      47. TEDMED Conference , Charleston SC, 04/10/12-15
      48. Wolfram Technology Conference, Champaign, Illinois, 04/10/21-23
      49. 6th Intl Conf on Electronic Commerce ICEC'2004: Towards A New Services Landscape, Delft, The Netherlands, 04/10/25-27
      50. Complexity and Philosophy Workshop - 2-Day Conference , Rio de Janeiro, 04/11

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