Complexity Digest 2002.28

15-Jul-2002

For individual e-mail subscriptions go to Subscriptions.
Previous issue 2002.27 | Next issue 2002.29

Content

  1. Tracking The Ecological Overshoot Of The Human Economy, PNAS
    1. Bush Seeks New Business Ethic, CNN/Money
    2. Bush Defends Regulator From Critics, Washington Post
    3. Bush: Don't Do As I Did, CNN/Money
  2. Were 'Little People' the First to Venture Out of Africa?, Science
    1. A New Skull of Early Homo from Dmanisi, Georgia, Science
  3. Eye Contact Detection In Humans From Birth, PNAS
  4. Parroting Builds Social Bonds, Nature Science update
  5. Aphids with Attitude, An Army Of Real-Life Adolescent Clones, Science News
  6. "Random Walkers" May Speed Peer-To-Peer Networks, New Scientist
  7. Ecologists See Flaws in Transgenic Mosquito, Science
    1. Patterns In Spatial Simulations: Are They Real?, Ecological Modelling
  8. Space-Time Characterization Of Soil Moisture From Remotely Sensed Data, Remote Sensing Env.
  9. Mixed Schools a Must for Fish?, Science
    1. Sustaining Fisheries Yields Over Evolutionary Time Scales, Science
    2. Fish Policies 'Ignore Evolution', BBC News
  10. Scientists Build Polio Virus From Scratch, NewScientist.com
    1. Polio Made From Scratch, Nature Science update
  11. Stem-Cell Competition, Nature
  12. Demand Management In Cells, Nature
  13. 'No Sex' Rule for Longer Life, BBC News
  14. Your Destiny, From Day One, Nature
    1. Fluid Flow And Broken Symmetry, Nature
    2. Left-Right Development: Conserved Function For Embryonic Nodal Cilia, Nature
    3. Determination Of Left-Right Patterning Of The Mouse Embryo, Nature
  15. Spatial Control Of Signal Release By Intracellular Waves, PNAS
    1. Traveling Metabolic Waves In Oxidant Release By Living Neutrophils, PNAS
    2. Traveling Waves Of Excitation In Neural Field Models, Neural Computation
  16. Collective Effort Makes the Good Times Roll, Science
  17. Spintronics Innovation Bids to Bolster Bits, Science
  18. Tomography And Spectroscopy As Dual Forms Of Quantum Computation, Nature
  19. Complex Challenges: Global Terrorist Networks
    1. A War of Robots, All Chattering on the Western Front, NYTimes
    2. High-Tech Front In The War On Terror, CNN
  20. Links & Snippets
    1. Other Publications
    2. Webcast Announcements
    3. Conference Announcements
    4. Position Announcement

  1. Tracking The Ecological Overshoot Of The Human Economy, PNAS Next Article Bookmark and Share

    Editor's Note: If humans are complex adaptive agents they are no saints and will exploit opportunities to their individual benefit. Establishing rules is one way to encourage cooperative behavior in the common interest but without sufficient pay-off for following the rules (or cost for ignoring them) the impact of the rules can become neutralized. For instance a watchdog agency that announces to become a "kinder and gentler place" for those it is supposed to watch hardly encourages compliance with the rules.

     

    Abstract: Sustainability requires living within the regenerative capacity of the biosphere. In an attempt to measure the extent to which humanity satisfies this requirement, we use existing data to translate human demand on the environment into the area required for the production of food and other goods, together with the absorption of wastes. Our accounts indicate that human demand may well have exceeded the biosphere's regenerative capacity since the 1980s. According to this preliminary and exploratory assessment, humanity's load corresponded to 70% of the capacity of the global biosphere in 1961, and grew to 120% in 1999.

    • Tracking The Ecological Overshoot Of The Human Economy, Mathis Wackernagel, Niels B. Schulz, Diana Deumling, Alejandro, Callejas Linares, Martin Jenkins, Valerie Kapos, Chad Monfreda, Jonathan Loh, Norman Myers, Richard Norgaard, Jorgen Randers, Proc. Natl. Acad. Sci. USA 2002 July 9; 99(14): p. 9266-9271

    1. Bush Seeks New Business Ethic, CNN/Money Next Article Bookmark and Share

      Excerpts: "With strict enforcement and higher ethical standards, we must usher in a new era of integrity in Corporate America," Bush said in a speech delivered to a business group. "In the end, there is no capitalism without conscience, no wealth without character."

      The president's proposals included lengthening jail time for criminal fraud by corporate officers and directors, doubling the maximum jail term for mail and wire fraud to 10 years, toughening laws criminalizing corporate document shredding, and preventing corporate officers from receiving company loans.

      • Bush Seeks New Business Ethic, In Speech On Wall Street, President Wants Longer Jail Terms, Tougher Laws To Curb Corporate Abuses, Mark Gongloff, CNN/Money, 02/07/09

    2. Bush Defends Regulator From Critics, Washington Post Next Article Bookmark and Share

      Excerpt: Yet Pitt's presence as the government's top securities watchdog carries dangers for Bush, too. Even some Pitt defenders say his close ties to the accounting industry limit his credibility as a reformer. In his first speech as SEC chairman last year, Pitt told an audience of auditors that the SEC would be "a kinder and gentler place for accountants."

       


    3. Bush: Don't Do As I Did, CNN/Money Next Article Bookmark and Share

      Excerpt: President Bush borrowed money from oil company Harken Energy Corp. while he was a member of its board, a practice he condemned this week as part of his plan to curb corporate abuse and fraud, the White House acknowledged Thursday.

      "I challenge compensation committees to put an end to all company loans to corporate officers," Bush said in his Wall Street speech Tuesday on corporate responsibility.

      • Bush: Don't Do As I Did, President's proposals would bar type of loans he got from Harken Energy, reports say, July 11, 2002: 2:57 PM EDT, CNN/Money

  2. Were 'Little People' the First to Venture Out of Africa?, Science Next Article Bookmark and Share

    Excerpts: On page 85 of this issue, a team reports the discovery of a 1.75-million-year-old skull that is the smallest and most primitive ever found outside Africa. Along with two equally ancient skulls reported 2 years ago, researchers say, the fossils appear to bury the notion that big brains spurred our first exodus from Africa, and they raise questions about the identity of the first long-distance traveler.

    1. A New Skull of Early Homo from Dmanisi, Georgia, Science Next Article Bookmark and Share

      Excerpt: The Dmanisi site dated to ~1.75 million years ago has now produced craniofacial portions of several hominid individuals, along with many well-preserved animal fossils and quantities of stone artifacts. (...) The Dmanisi specimens are the most primitive and small-brained fossils to be grouped with this species or any taxon linked unequivocally with genus Homo and also the ones most similar to the presumed habilis-like stem. We suggest that the ancestors of the Dmanisi population dispersed from Africa before the emergence of humans identified broadly with the H. erectus grade.

      • A New Skull of Early Homo from Dmanisi, Georgia, Abesalom Vekua, David Lordkipanidze, G. Philip Rightmire, Jordi Agusti, Reid Ferring, Givi Maisuradze, Alexander Mouskhelishvili, Medea Nioradze, Marcia Ponce de Leon, Martha Tappen, Merab Tvalchrelidze, Christoph Zollikofer, Science 2002 297: 85-89

  3. Eye Contact Detection In Humans From Birth, PNAS Next Article Bookmark and Share

    Abstract: Making eye contact is the most powerful mode of establishing a communicative link between humans. During their first year of life, infants learn rapidly that the looking behaviors of others conveys significant information. Two experiments were carried out to demonstrate special sensitivity to direct eye contact from birth. (...) The results show that, from birth, human infants prefer to look at faces that engage them in mutual gaze and that, from an early age, healthy babies show enhanced neural processing of direct gaze.

  4. Parroting Builds Social Bonds, Nature Science update Next Article Bookmark and Share

    Excerpts: Parrots use their powers of mimicry to make friends, researchers have found. Birds copy the calls of those they want to meet.

    This might explain why pet parrots are so good at imitating human speech, says ornithologist Jack Bradbury, of Cornell University, Ithaca, New York. "Mimicry is very important to them in terms of social affiliation," (...).

    When they meet, some birds make a special call, a 'chee' sound. Every bird's chee is slightly different. Copying another's seems to mean 'let's get together'.


  5. Aphids with Attitude, An Army Of Real-Life Adolescent Clones, Science News Next Article Bookmark and Share

    Excerpt: Most aphids spend their lives as independent, pinhead-scale, six-legged versions of cows. They're specialized for grazing but not much else-high throughput, low drama.

    Yet a few aphid species turn out to be more like killer bees than like cows. These aphids live together in colonies, each founded by a highly fertile, queenlike female. While her daughters are still adolescents, they grow the outsized fighting legs that earned them a favorable comparison to Schwarzenegger in a scientific journal.


  6. "Random Walkers" May Speed Peer-To-Peer Networks, New Scientist Next Article Bookmark and Share

    Excerpt: The researchers used computer software to model various P2P networks. They showed that, rather than flooding many messages right across a network, it is better to allow a few messages to randomly "walk" between individual machines. The research indicates that the optimum number of "walkers" sent out to find a file, for example, is between 16 and 64.

    The team also showed that deliberately storing information in a random fashion made the network function more efficiently and that there is an optimum number of copies of a file (...).


  7. Ecologists See Flaws in Transgenic Mosquito, Science Next Article Bookmark and Share

    Summary: A small band of molecular biologists is seeking to replace the natural mosquito populations ravaging developing countries with "designer mosquitoes," genetically modified so that they are unable to transmit diseases such as malaria. But at a workshop here last week, 20 of the world's leading mosquito ecologists said that huge ecological questions remain--and it's time funding agencies, which have enthusiastically endorsed the transgenic mosquito plan, start devoting attention and money to answering them.

    1. Patterns In Spatial Simulations: Are They Real?, Ecological Modelling Next Article Bookmark and Share

      Abstract: We discuss a class of spatial exploiter-victim models that exhibit pattern formation when exploiters disperse farther than their victims on average. The patterns are not Turing patterns; they are akin to patterns seen in models for neurological activities (...). The patterns in our study may be common in ecological simulation studies where often dispersal kernels are chosen that appear to be particularly prone to exhibiting such patterns. Since these patterns are very sensitive to the choice of dispersal kernels, our study points to a potential pitfall in inferring processes from patterns in ecological studies that are based on computer simulations.


  8. Space-Time Characterization Of Soil Moisture From Remotely Sensed Data, Remote Sensing Env. Next Article Bookmark and Share

    Abstract: In particular, empirical scaling analysis was conducted to investigate the linkages between the spatial and temporal variability of soil moisture, and landscape characteristics including terrain, soils, and vegetation. The results show that the soil moisture fields exhibit multiscaling and multifractal behavior varying with the scales of observation (...). A break in statistical symmetry (multiscaling behavior) was identified, which separates the spatial and temporal evolution of the statistical structure of soil moisture fields (...). The multifractal behavior is associated with the temporal evolution of drying and wetting regimes, reflecting the nonlinear character of soil moisture dynamics.

  9. Mixed Schools a Must for Fish?, Science Next Article Bookmark and Share

    Summary: Two scientists have gone fishing in their laboratory to test the idea that selective culls could permanently alter the genetic makeup of wild fish stocks. On page 94, they say they've netted data suggesting that fisheries managers should rethink their rules if they want to prevent some stocks from swimming down dangerous evolutionary paths. Some biologists, however, say the lab-based results lend little to the current debate over how best to protect teetering populations.

    1. Sustaining Fisheries Yields Over Evolutionary Time Scales, Science Next Article Bookmark and Share

      Excerpt: Fishery management plans ignore the potential for evolutionary change in harvestable biomass. We subjected populations of an exploited fish (Menidia menidia) to large, small, or random size-selective harvest of adults over four generations. Harvested biomass evolved rapidly in directions counter to the size-dependent force of fishing mortality. Large-harvested populations initially produced the highest catch but quickly evolved a lower yield than controls. Small-harvested populations did the reverse. These shifts were caused by selection of genotypes with slower or faster rates of growth.


    2. Fish Policies 'Ignore Evolution', BBC News Next Article Bookmark and Share

      Excerpts: Current fishing regulations need to be rethought because they ignore evolution, according to new research.

      The policy to catch only the larger individuals of any given species - in an attempt to protect juveniles - may cause the average adult size of fish to decrease, it is claimed.

      This evolutionary change could cause a whole host of problems for fish populations, such as decreased breeding rates and increased predation.

      Fishing practices should preserve the natural genetic variation of fish populations rather than selecting only large individuals, say researchers, or we could see a severe decline in numbers.


  10. Scientists Build Polio Virus From Scratch, NewScientist.com Next Article Bookmark and Share

    Summary: Scientists have built the virus that causes polio from scratch in the lab, using nothing more than genetic sequence information from public databases and readily available technology.

    The feat proves that even if all the polio virus in the world were destroyed, it would be easily possible to resurrect the crippling disease. It also raises the worrying possibility that bioterrorists could use a similar approach to create devastating diseases such as ebola and smallpox without having to gain access to protected viral stocks.


    1. Polio Made From Scratch, Nature Science update Next Article Bookmark and Share

      Excerpts: Using genetic code as the recipe and carbon-containing chemicals as ingredients, researchers have made infective poliovirus entirely from scratch. This is the first time that a working biological entity has been made using chemistry alone.

      The team behind the achievement claim that it demonstrates the risk of further viruses being created from just their genetic code - by bioterrorists, for example. (...)

      Compared with living things such as bacteria, animals and plants, viruses are rudimentary (...). Building complex life forms from scratch, (...) is still regarded as impossible.

       


  11. Stem-Cell Competition, Nature Next Article Bookmark and Share

    Excerpts: The debate continues over the relative merits of using embryonic and adult stem cells for research - and perhaps, one day, to treat patients. Two new papers look at the abilities of these remarkable cells.

    (...) For proponents, these cells represent our greatest hope for treating devastating disorders such as Parkinson's disease, diabetes and spinal-cord injuries. But for those who are adamantly opposed to the use of cells derived from human embryos, stem cells from adults have been advocated as an ethically palatable and experimentally reasonable alternative.


  12. Demand Management In Cells, Nature Next Article Bookmark and Share

    Excerpt: The trouble is that it is the business of microbes to produce more microbes, not to divert resources into the wholesale generation of a protein or other metabolite that might be desirable to the metabolic engineer but whose overproduction is of no advantage to the organism itself. So, in trying to increase the flow of intermediates through a metabolic pathway, the metabolic engineer is working against the complex controls of the cell, which act to ensure that this flux remains constant.

  13. 'No Sex' Rule for Longer Life, BBC News Next Article Bookmark and Share

    Excerpts: Scientists have discovered a reason why having sex could be bad for your health.

    The research reveals that hormones are the key to mating insects having a shorter life expectancy.

    The findings may also give clues as to why the same principle appears to hold true for other creatures - including humans.

     


  14. Your Destiny, From Day One, Nature Next Article Bookmark and Share

    Excerpts: The mammalian body plan starts being laid down from the moment of conception, it has emerged. Helen Pearson considers the implications of a surprising shift in embryological thinking.

    Your world was shaped in the first 24 hours after conception. Where your head and feet would sprout, and which side would form your back and which your belly, were being defined in the minutes and hours after sperm and egg united.

    (...) Mammalian embryos were thought to spend their first few days as a featureless orb of cells.

    • Your Destiny, From Day One, Helen Pearson, Nature,Vol 418, 02/07/04, The mammalian body plan starts being laid down from the moment of conception, it has emerged.

    1. Fluid Flow And Broken Symmetry, Nature Next Article Bookmark and Share

      Excerpts:  The asymmetries between the right- and left-hand sides of the body are initiated at an early stage of development. (...)

      How an embryo first distinguishes its left from its right side has baffled embryologists for a long time. The rotational beating of cilia - hair-like structures attached to individual cells - is known to be essential for the process. But cilia have been seen only in mouse embryos, and it has remained unclear whether their movement could really generate the necessary molecular asymmetries.


    2. Left-Right Development: Conserved Function For Embryonic Nodal Cilia, Nature Next Article Bookmark and Share

      Excerpts: How left-right handedness originates in the body plan of the developing vertebrate embryo is a subject of considerable debate. In mice, a left-right bias is thought to arise from a directional extracellular flow (nodal flow) (...). Here we show that the existence of node monocilia and the expression of a dynein gene that is implicated in ciliary function are conserved across a wide range of vertebrate classes, indicating that a similar ciliary mechanism may underlie the establishment of handedness in all vertebrates.


    3. Determination Of Left-Right Patterning Of The Mouse Embryo, Nature Next Article Bookmark and Share

      Excerpts: Here we describe the development of a system in which mouse embryos are cultured under an artificial fluid flow and with which we have examined how flow affects L-R patterning. An artificial rightward flow that was sufficiently rapid to reverse the intrinsic leftward nodal flow resulted in reversal of situs in wild-type embryos. The artificial flow was also able to direct the situs of mutant mouse embryos with immotile cilia. These results provide the first direct evidence for the role of mechanical fluid flow in L-R patterning.


  15. Spatial Control Of Signal Release By Intracellular Waves, PNAS Next Article Bookmark and Share

    Excerpts: The versatility of cell-cell communication relies on sophisticated modules for signal generation, transmission, detection, and processing. Compared with signal detection and intracellular processing, signal release is relatively poorly understood. (...) What are the constraints on the time scales of signal release imposed by the corresponding time scales of the signal transmission and detection? Finally, can a cell point its signals toward its neighbors, in a way similar to aiming a gun at a target or to directing electromagnetic and acoustic signals in man-made communications networks?

    1. Traveling Metabolic Waves In Oxidant Release By Living Neutrophils, PNAS Next Article Bookmark and Share

      Excerpts: Cell metabolism self-organizes into two types of dissipative structures: chemical oscillations and traveling metabolic waves. In the present study we test the hypothesis that traveling NAD(P)H waves within neutrophils are associated spatially and temporally with the release of reactive oxygen metabolites (ROMs). (...) Propagating NAD(P)H waves allow neutrophils to specifically deliver substrate to the lamellipodium at high concentrations, thus facilitating the local and periodic release of ROMs in the direction of cell movement and/or a target.


    2. Traveling Waves Of Excitation In Neural Field Models, Neural Computation Next Article Bookmark and Share

      Abstract: Field models provide an elegant mathematical framework to analyze large-scale patterns of neural activity. On the microscopic level, these models are usually based on either a firing-rate picture or integrate-and-fire dynamics. This article shows that in spite of the large conceptual differences between the two types of dynamics, both generate closely related plane-wave solutions. Furthermore, for a large group of models, estimates about the network connectivity derived from the speed of these plane waves only marginally depend on the assumed class of microscopic dynamics. We derive quantitative results about this phenomenon and discuss consequences for the interpretation of experimental data.


  16. Collective Effort Makes the Good Times Roll, Science Next Article Bookmark and Share

    Excerpts: A far better way [than averaging over all clocks, Ed.] is to read only some of the clocks, report physicists Damien Challet and Neil Johnson (...)

    The work is an important step in the study of "collectives," groups of autonomous agents that conspire to achieve a common goal, says David Wolpert: (...)" Such studies will be crucial, Wolpert adds, as computers evolve from machines that perform specific tasks, by following strict rules, to more adaptable entities that can work together and find their own ways to solve larger problems.


  17. Spintronics Innovation Bids to Bolster Bits, Science Next Article Bookmark and Share

    Summary: Changes in the orientation of bits of magnetic data alter the electrical resistance of electrons flowing through the read head, translating the magnetic data into a stream of electrical pulses. In the 1 July issue of Physical Review B, materials scientists report on the largest effect ever seen of a phenomenon known as ballistic magnetoresistance (BMR). The larger BMR effect could lead to smaller and more sensitive read heads capable of reading smaller magnetic bits, which, in turn, could allow diskmakers to boost the storage density of disk drives to a staggering 1 trillion bits per square inch.

  18. Tomography And Spectroscopy As Dual Forms Of Quantum Computation, Nature Next Article Bookmark and Share

    Excerpt: It is important to be able to determine the state of a quantum system and to measure properties of its evolution. State determination can be achieved using tomography, in which the system is subjected to a series of experiments, whereas spectroscopy can be used to probe the energy spectrum associated with the system's evolution. Here we show that, for a quantum system whose state or evolution can be modelled on a quantum computer, tomography and spectroscopy can be interpreted as dual forms of quantum computation.

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

    1. A War of Robots, All Chattering on the Western Front, NYTimes Next Article Bookmark and Share

      Excerpt: Since the United States military campaign began in Afghanistan, the unmanned spy plane has gone from a bit player to a starring role in Pentagon planning. Rather than the handful of "autonomous vehicles," or A.V.'s, that snooped on Al Qaeda hideouts, commanders are envisioning wars involving vast robotic fleets on the ground, in the air and on the seas - swarms of drones that will not just find their foes, but fight them, too.

      But such forces would need an entirely new kind of network (...).


    2. High-Tech Front In The War On Terror, CNN Next Article Bookmark and Share

      Excerpt: Experts say a new technique called hyperspectral imaging can do just that. The devices measure the energy emitted or reflected from an object in more detail than can be provided by a conventional camera or thermal imager.

      "With hyperspectral imaging you're looking at literally hundreds of different colors, and minute differences in those colors can tell you the difference between leaves and a camouflaged command post," says John Pike, director of GlobalSecurity.org, an Alexandria, Virginia-based group that analyzes security risks and weapons improvement.

       


  20. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. Rapid Natural Scene Categorization In The Near Absence Of Attention, Fei Fei Li, Rufin VanRullen, Christof Koch, Pietro Perona, PNAS 2002;99 9596-9601
      2. Modulation of Induced Gamma Band Responses in a Perceptual Learning Task in the Human EEG, Thomas Gruber, Matthias M. Muller, Andreas Keil, J. Cogn. Neurosci. 2002 July 1; 14(5): p. 732-744
      3. Is the Human Amygdala Critical for the Subjective Experience of Emotion?, Evidence of Intact Dispositional Affect in Patients with Amygdala Lesions, Adam K. Anderson, Elizabeth A. Phelps, J. Cogn. Neurosci. 2002 July 1; 14(5): p. 709-720
      4. Auditory Cortical Responses to Speech-Like Stimuli in Dyslexic Adults, Hanna Renvall, Riitta Hari, J. Cogn. Neurosci. 2002 July 1; 14(5): p. 757-768
      5. Neural Substrates of Action Event Knowledge, Joseph W. Kable, Jessica Lease-Spellmeyer, Anjan Chatterjee, J. Cogn. Neurosci. 2002 July 1; 14(5): p. 795-805
      6. Cluster Analysis Of Gene Expression Dynamics, Marco F. Ramoni, Paola Sebastiani, Isaac S. Kohane, Proc. Natl. Acad. Sci. USA 2002 July 9; 99(14): p. 9121-9126
      7. Data Visualization: Picture This, Philip Ball, Nature 418, 11 - 13 (2002); doi:10.1038/418011a, Drowning in data? New visualization techniques could help.
      8. An Early Tetrapod From 'Romer's Gap', J. A. Clack, doi:10.1038/nature00824
      9. Controller Sent Jets Into Crash, Flight Data Show, Edmund L. Andrews, NYTimes, 02/07/08
      10. Evolutionary Circuit Design: Information Theory Perspective on Signal Propagation . Denis V. Popel, Nawar Al-Hakeem, arXiv.
      11. Computational complexity arising from degree correlations in networks . A. Vazquez and M. Weigt, arXiv.
      12. Agent Programming with Declarative Goals . F.S. de Boer, K.V. Hindriks, W. van der Hoek and J.-J.Ch. Meyer, arXiv.
      13. Scaling Exponents in Anisotropic Hydrodynamic Turbulence . Victor S. L'vov, Itamar Procaccia, Vasil Tiberkevich, arXiv.
      14. Buyer feedback as a filtering mechanism for reputable sellers . Paolo Laureti, Frantisek Slanina, Yi-Kuo Yu and Yi-Cheng Zhang, arXiv.
      15. Complex dynamics in a simple model of pulsations for Super-Asymptotic Giant Branch Stars . Andreea Munteanu, Enrique Garcia-Berro, Jordi Jose, Emilia Petrisor, arXiv.
      16. Bursts of extensive air showers: chaos vs. stochasticity . Yu. A. Fomin, G. V. Kulikov, M. Yu. Zotov, arXiv.
      17. Quantum diffusion of prices and profits . E.W. Piotrowski, J. Sladkowski, arXiv
      18. Uncorrelated Random Networks , Z. Burda, A. Krzywicki, arXiv Paper ID: cond-mat/0207020. 30-Jun-2002
      19. Numerical and Theoretical Studies of Noise Effects in the Kauffman Model , X. Qu, M. Aldana, Leo P. Kadanoff, arXiv Paper ID: nlin.AO/0207016. 9-July-2002
      20. Influence Of Intraspecific Density Dependence On A Three-Species Food Chain With And Without External Stochastic Disturbances, C. Xu & Z. Li , Ecological Modelling, Vol. 155 (1), pp.:71 - 83, July 2002
      21. Components Of Execution Costs: Evidence Of Asymmetric Information At The Mexican Stock Exchange, A. C. Silva, G. Chavez, J. of Int. Fin. Markets, Inst. & Money, Vol. 12 (3), pp.:253-278, July 2002
      22. Automated Volcanic Eruption Detection Using MODIS, R. Wright  , L. Flynn, H. Garbeil, A. Harris & E. Pilger, Remote Sensing of the Environment, Vol. 82 (1), pp.:135-155, July 2002
      23. Neural Systems Underlying British Sign Language And Audio-Visual English Processing In Native Users, M. MacSweeney, B. Woll, R. Campbell, P. K. McGuire, A. S. David, S. C. R. Williams, J. Suckling, G. A. Calvert & M. J. Brammer  , Brain, Vol. 125, No. 7, 1583-1593, July 2002
      24. Energy Balance For Analysis Of Complex Metabolic Networks, D. A. Beard, S. Liang, & H. Qian, Biophys J, p. 79-86, Vol. 83, No. 1, July 2002
      25. The Neuropathology Of Primary Mood Disorder, P. J. Harrison, Brain, Vol. 125, No. 7, 1428-1449, July 2002
      26. Low Body Temperature, Time Dilation, And Long-Trace Conditioned Flavor Aversion In Rats, Misanin J.R., Anderson M.J., Christianson J.P. , Collins M.M., Goodhart M.G., Rushanan S.G., Hinderliter C.F., Neurobiology of Learning and Memory, vol. 78, no. 1, pp. 167-177(11) , July 2002
      27. Using Noise To Compute Error Surfaces In Connectionist Networks: A Novel Means Of Reducing Catastrophic Forgetting, R. M. French,N. Chater, Neural Computation.;14, pp:1755-1769. July, 2002
      28. A Note On Approximate Bayesian Bootstrap Imputation, Kim J.K., Biometrika, Vol. 89, No. 2, pp. 470-477(8), June 2002
      29. Local Multiple Imputation, Biometrika, Aerts M., Claeskens G., Hens N. & Molenberghs G., Vol. 89, No. 2, pp. 375-388(14), June 2002
      30. Sequence-Dependent Motions Of DNA: A Normal Mode Analysis At The Base-Pair Level, A. Matsumoto & W K. Olson, Biophys J, p. 22-41, Vol. 83, No. 1, July 2002

         


    2. Webcast Announcements Next Article Bookmark and Share

      1. International Conference on Complex Systems (ICCS2002), Nashua, NH, 02/06/09-14 (video + mp3 downloadable audio)
      2. Understanding Complex Systems: Symposium Complexity in Physical and Biological Structures, Medicine & Ecology, Department of Physics, University of Illinois at Urbana-Champaign, 02/05/13-15
      3. ROBOT: The Future of Flesh and Machine, Rodney A. Brooks, MIT AI Lab, Talk given at the School of Cognitive and Computing Sciences of the University of Sussex, May 14th, 2002.
      4. Introducing Complexity, The University of Liverpool ,02/04/24, (mp3 web-cast and audio download, contributed by Carlos Gershenson)
      5. Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998

    3. Conference Announcements Next Article Bookmark and Share

      1. Let's Face Chaos Through Nonlinear Dynamics, Maribor, Slovenia, 02/06/30 - 07/14
      2. Dynamical Systems in Physiology and Medicine, Urbino, Italy02/07/07-17
      3. 7th International Conference on Music Perception & Cognition - ICMPC7, Sydney, 02/07/17-21
      4. Mental Research Institute 2002 Summer Conference, San Mateo, CA, 02/07/26-27
      5. 20th System Dynamics Conference: Organizational Change Dynamics - Understanding Systems, Managing Transformation, Palermo, Italy, 02/07/28-08/01
      6. Complexity and Philosophy, Norwood, Massachusetts, USA, 02/07/29-30
      7. Workshop On Fluctuations Chaos And Complexity In Multistable Systems, Lancaster University, 02/08/01-07
      8. 12th Ann Intl Conf Society For Chaos Theory in Psychology & Life Sciences: Chaos and Complexity in a Changing World, Portland, OR, USA, 02/08/01-04
      9. FROM ANIMALS TO ANIMATS 7 The Seventh International Conference on the SIMULATION OF ADAPTIVE BEHAVIOR (SAB'02), Edinburgh, UK, 02/08/04-11
      10. New Directions in Dynamical Systems, Kyoto, Japan, 02/08/05-15
      11. International Workshop on Meta-Synthesis and Complex Systems, Shanghai, China, 02/08/07-08
      12. International Workshop on Biologically Inspired Robotics: The Legacy of W. Grey Walter, Bristol, UK, 02/08/14-16
      13. 7th Experimental Chaos Conference, San Diego, USA, 02/08/25-29
      14. Econophysics Conference, Denpasar, Bali, Indonesia, 02/08/29-31
      15. Self-Organisation and Evolution of Social Behaviour, Monte Verità, Switzerland, 02/09/08-13
      16. Complex Systems (CS02) Complexity with Agent-Based Modeling, Chuo University, Tokyo, Japan, 02/09/10-12
      17. 3rd Intl NAISO Symposium on Engineering Of Intelligent Systems (EIS 20020), Malaga, Spain, 02/09/24-27
      18. Seminar on Non-equilibrium Phenomena and Phase Transitions in Complex Systems, Avila, Spain, 02/09/24-28.
      19. ACRI 2002, 5th Intl Conf on Cellular Automata for Research and Industry, Geneva, Switzerland, 02/10/09-11 
      20. Dynamical Systems Methods for Advanced Diagnosis and Prognosis, 39th Annual Technical Meeting of the Society of Engineering Science, University Park, Pennsylvania, 02/10/13-16
      21. 4th Asia-Pacific Conference on Simulated Evolution And Learning (SEAL'02), 9th International Conference on Neural Information Processing (ICONIP'02), International Conference on Fuzzy Systems and Knowledge Discovery (FSKD'02), Singapore, 02/11/18-22
      22. International Conference on Systems, Development and Self-Organization (ICSDS'2002 ),Beijing, 02/11/30-12/01
      23. Managing the Complex IV, Naples , FL, Early December 2002
      24. Artificial Life VIII, UNSW, Sydney, Australia, 02/12/09-13
        1. 1st Workshop on the Modelling of Dynamical Hierarchies in Alife (WDH 2002)
      25. Hawaii International Conference On System Sciences (HICSS-36), Big Island, Hawaii, 03/01/06-09
      26. INSC 2003, International Nonlinear Sciences Conference Research and Applications in the Life Sciences,Vienna, Austria, 03/02/07-09
      27. 21st ICDE World Conference on Open Learning and Distance Education, Hong Kong, 03/06/01-05

    4. Position Announcement Bookmark and Share

      Staff Memberposition available, Modeling, Algorithms, and Informatics Group (CCS-3), Los Alamos National Laboratory, (...) Current areas of focus relevant to this job include cybersecurity, intelligence analysis for homeland defense, object/target recognition, document classification, bionetwork identification and bio-ontology systems, knowledge network analysis, and collaboration and recommendation technology for digital libraries.
      • Luis Mateus Rocha, Complex Systems Research, MS B256, Los Alamos, NM, (505) 665-1676

Also available in: Simple HTML format | TXT format | TXT format with links | Print