Complexity Digest 2004.11

15-Mar-2004

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Content

  1. The Evolution Of Social Geometry: General Principles Of The Evolution Of Complex Systems, Complexity
    1. Using Artificial Life To Teach Evolutionary Biology, Cognitive Processing
  2. Beyond The Ivory Tower: Constructing Complexity in the Digital Age, Science
    1. Study Finds a Nation of Polarized Readers, NY Times
  3. Superfamilies of Evolved and Designed Networks, Science
  4. The Tangled Webs That Neutrophils Weave, Science
    1. Neutrophil Extracellular Traps Kill Bacteria, Science
  5. Cell Biology: A Cellular Choreographer, Nature
  6. Ovaries May Replenish Eggs, NPR Audio
    1. Lotion Speeds DNA Repair, Protects Mice From Skin Cancer, Science News
  7. UCI Study Identifies How New Neurons Grow In Adult Brain, ScienceDaily
    1. Watching Genes In Action: Method Is First To Show Three Genes At Once In Higher Animals, ScienceDaily
  8. Quantum Computing Gets A Step Closer, Natue Science update
    1. Physics: "Putting The Weirdness To Work", Business Week
    2. Multilevel Molecular Memory, Physics News update
  9. Method Produces Uniform, Self-Assembled Nanocells, Eureka Alert
    1. 100-Metre Nanotube Thread Pulled From Furnace, New Scientist
  10. Superconductivity: Turn Up The Temperature, Nature
    1. An Explanation For A Universality Of Transition Temperatures In Families Of Copper Oxide Superconductors, Nature
  11. Mount Fuji: A Sleeping Giant Stirs, Nature
  12. From The Tallest To (One Of) The Fattest: Fate Of The American Population, Econ. & Human Biol.
  13. Intermingled Basins In A Two Species System, J. Math. Biol.
  14. Optimal Traffic Organization In Ants Under Crowded Conditions, Nature
    1. Fitness Consequences Of Avian Personalities In A Fluctuating Environment, Alphagalileo & Proc. Biol. Sc.
  15. Apparent Competition And Recovery From Infection, J. Theor. Biol.
  16. Calm Mind Creates Complex Tunes, BBC News Online
  17. Pointed Questions on Missile Defense System, NY Times
    1. The Internet and Political Campaigns, NY Times
    2. Egypt rebuffs US over regional reform, The Guardian
  18. Complex Challenges: Global Terrorist Networks
    1. Analysis: Madrid Terrorism Probe, NPR Audio
      1. Britain Frees Citizens Sent Home from Cuba, NPR Audio
    2. Guantanamo Update, NPR TON
  19. Links & Snippets
    1. Other Publications
    2. Webcast Announcements
    3. Conference & Call for Papers Announcements
      1. Strategic Thinking in a Complex World, Smithsonian Resident Associates Program

  1. The Evolution Of Social Geometry: General Principles Of The Evolution Of Complex Systems, Complexity Next Article Bookmark and Share

    Excerpts: This essay takes that path, i.e., looking for general principles that determine the laws of specific complex systems. (...) there are no laws that describe and explain physical, biological, and social complexity in the literally same way. But there may be principles in a rather abstract sense that show that all the different laws, which determine the dynamics (...) of complex systems, are all variations to the same air. I believe that, e.g., by analyzing some aspects of socio-cultural evolution, it is possible to unveil such a principle: the evolution of complex systems must be understood as the evolution of their geometry.

    1. Using Artificial Life To Teach Evolutionary Biology, Cognitive Processing Next Article Bookmark and Share

      Abstract: Two groups of high school students received a standard lesson in evolutionary biology followed by a software session. The experimental group used the suite of artificial life software presented in this paper; the control group used a commercial multimedia hypertext. At the end (...) asked to fill in a simple multiple-choice questionnaire testing the students knowledge of various aspects of evolutionary biology. The results show that the group using the artificial life software performed significantly better than the control group. We argue that (...) the artificial life makes it possible for students to perform experiments, a possibility not available to the control group.
      • Source: Using Artificial Life To Teach Evolutionary Biology, O. Miglino - orazio.miglinoaunina2.it, F. Rubinacci, L. Pagliarini, H. H. Lund, DOI: 10.1007/s10339-004-0009-z, Cognitive Processing, Online 2004/02/24
      • Contributed by Atin Das - dasatinayahoo.co.in

  2. Beyond The Ivory Tower: Constructing Complexity in the Digital Age, Science Next Article Bookmark and Share

    Expert: Over the centuries, architects have expressed their designs as one- dimensional strings of text, two- dimensional drawings, three-dimensional scale models, and--most recently--digital databases stored in computers. Successive advances in information technology have enabled the description and execution of increasingly ambitious projects. Today, innovative applications of computer-aided design and manufacturing technology are allowing architects to transcend long-standing limits on complexity and, thus, to respond more sensitively and effectively to varied human needs and construction contexts.

    (...)This complexity may be defined, for our purposes, as the ratio of design content to construction content (...).

    1. Study Finds a Nation of Polarized Readers, NY Times Next Article Bookmark and Share

      Expert: ¡§Bush at War" and "Sleeping With the Devil" are just two of the political books that have dominated the best-seller list of The New York Times (...). But according to Valdis Krebs, (...), these volumes - the first a blow-by-blow account of White House deliberations in the aftermath of Sept. 11, the second an expose of corruption and hypocrisy in American-Saudi relations - share an unusual distinction. They occupy a sparsely populated middle ground, rare titles that have been bought by people who generally tend to shop for much more partisan polemics.

  3. Superfamilies of Evolved and Designed Networks, Science Next Article Bookmark and Share

    Expert: Complex biological, technological, and sociological networks can be of very different sizes and connectivities, making it difficult to compare their structures. Here we present an approach to systematically study similarity in the local structure of networks, based on the significance profile (SP) of small subgraphs in the network compared to randomized networks. We find several superfamilies of previously unrelated networks with very similar SPs. (E) Additional superfamilies include power grids, protein-structure networks and geometric networks, World Wide Web links and social networks, and word-adjacency networks from different languages.

  4. The Tangled Webs That Neutrophils Weave, Science Next Article Bookmark and Share

    Expert: (...) extracellular killing may be riskier, because neutrophils can potentially damage surrounding host tissues. (...) a tool that neutrophils produce to kill extracellular bacteria in a way that minimizes damage to host cells. Brinkmann et al. observed that when neutrophils are stimulated with cytokines or bacterial endotoxin, these cells generate a web of extracellular fibers composed of DNA, histones, and granule proteins such as elastase (see the figure). These fibers, nicknamed neutrophil extracellular traps (NETs), bind to both Gram-positive and Gram-negative bacteria and display bactericidal activity.

    1. Neutrophil Extracellular Traps Kill Bacteria, Science Next Article Bookmark and Share

      Abstract: Neutrophils engulf and kill bacteria when their antimicrobial granules fuse with the phagosome. Here, we describe that, upon activation, neutrophils release granule proteins and chromatin that together form extracellular fibers that bind Gram-positive and -negative bacteria. These neutrophil extracellular traps (NETs) degrade virulence factors and kill bacteria. NETs are abundant in vivo in experimental dysentery and spontaneous human appendicitis, two examples of acute inflammation. NETs appear to be a form of innate response that binds microorganisms, prevents them from spreading, and ensures a high local concentration of antimicrobial agents to degrade virulence factors and kill bacteria.
      • Source: Neutrophil Extracellular Traps Kill Bacteria, Volker Brinkmann, Ulrike Reichard, Christian Goosmann, Beatrix Fauler, Yvonne Uhlemann, David S. Weiss, Yvette Weinrauch, Arturo Zychlinsky, Science 5 March 2004: 1532-1535.

  5. Cell Biology: A Cellular Choreographer, Nature Next Article Bookmark and Share

    Expert: During this time, the epithelial cells adhere tightly to each other within the sheet to provide a protective barrier between the 'outside' and 'inside' environments. But the upper and lower surfaces of the sheet have different surroundings and carry out different functions. For example, the upper surface is involved in taking up nutrients from the food that passes through the intestine, whereas the lower surface transports these nutrients into the blood supply (...). Knowledge of how this asymmetry, or polarization, is established is only just emerging.

  6. Ovaries May Replenish Eggs, NPR Audio Next Article Bookmark and Share

    Expert: Researchers studying mouse ovaries report a startling discovery: Ovaries are constantly replenishing their supply of eggs. The finding challenges scientific dogma, which holds that female mammals are born with a finite supply of eggs that dwindles as they age. Experts say the research could revolutionize fertility treatments for middle-age women.

    1. Lotion Speeds DNA Repair, Protects Mice From Skin Cancer, Science News Next Article Bookmark and Share

      Expert: Snippets of DNA that activate a cell's DNA repair process may protect mice from skin cancer caused by ultraviolet radiation. (...) Dermatologists warn that not even the best sunscreens prevent all the potentially cancer-causing damage that ultraviolet light (UV) does to skin. A new study, however, suggests that incorporating certain snippets of DNA into sunscreens could prompt skin to repair UV-induced genetic damage before it leads to cancer. Indeed, scientists have found that slathering such DNA fragments onto UV-exposed hairless mice thwarts skin cancer.

  7. UCI Study Identifies How New Neurons Grow In Adult Brain, ScienceDaily Next Article Bookmark and Share

    Excerpts: (...) study on cell growth in the adult brain may provide important clues to the potential use of stem cells in the treatment of memory-related diseases such as Alzheimer's. The study shows for the first time how newborn neurons in the adult brain grow and integrate into the area involved with learning and memory. The findings may prove significant because these new neurons begin in a primitive state similar to stem cells (...) that new neurons in the adult brain grow neural signaling appendages in a similar way to those found in developing brains.

    1. Watching Genes In Action: Method Is First To Show Three Genes At Once In Higher Animals, ScienceDaily Next Article Bookmark and Share

      Excerpts: Using chicken embryos and colorful fluorescent dyes, (...) have demonstrated for the first time in a higher animal that it is possible to simultaneously show three genes working within an embryo, body tissue or even a single cell. "This method allows us to visualize how embryos develop in more detail and with greater clarity than ever before. We can look at three different genes in the same embryo at the same time - even when they overlap." Mauch says the new method should help (...) creating artificial organs such as kidneys for people whose own organs have failed.

  8. Quantum Computing Gets A Step Closer, Natue Science update Next Article Bookmark and Share

    Expert: These mobile bits of quantum information, known as 'flying qubits', have the potential to travel over many kilometres, (...). ¡§Ultimately a quantum link over a very long distance could be created,¡¨ (...). Researchers have already entangled pairs of atoms, and pairs of photons. But this is the first time that scientists have seen a single atom entangled with a single photon. "This has probably been going on in other experiments, it is just that no one has looked for it before," says Monroe.

    1. Physics: "Putting The Weirdness To Work", Business Week Next Article Bookmark and Share

      Expert: (...) putting Bose-Einstein condensate atoms into the valleys of an optical lattice. His special twist is creating two simultaneous lattices with two different "colors" of laser beams. He also puts his atoms in two states at the same time. Then he can move one of the landscapes so that the atom particles interact in new ways. "We can entangle hundreds of thousands of atoms and measure the state of each particle," he says. "It is a completely new way of thinking about a quantum computer."

    2. Multilevel Molecular Memory, Physics News update Next Article Bookmark and Share

      Expert: (...) would like to store information in the form of parcels of charge placed at several active sites around a single molecule. A USC/NASA-Ames collaboration has taken a step in the direction of such a chemical memory by producing a memory cell with three different controllable bit states, with a total of 8 (2 raised to the 3rd power) distinct levels. This multilevel molecular memory unit works by charging or discharging "molecular wires" consisting of molecules (attached to an underlying nanowire) into different chemically reduced or oxidized (redox) states.

  9. Method Produces Uniform, Self-Assembled Nanocells, Eureka Alert Next Article Bookmark and Share

    Expert:
    The peaks on this three-dimensional plot indicate a high concentration of liposomes forming in a microchannel.
    The new NIST method uses micrometer-size channels etched into a device to produce self-assembled liposomes of specific sizes from as large as about 240 nanometers (nm) to as small as about 100 nm. A stream of natural fats (lipids) dissolved in alcohol is directed at an intersection of two channels that looks like a micro version of a four-way stop. A water-based liquid containing medicines or other substances is sent toward the lipid stream from two opposing directions. Rather than mixing with the water, the lipids surround it, forming self-assembled nanocells.

    1. 100-Metre Nanotube Thread Pulled From Furnace, New Scientist Next Article Bookmark and Share

      Expert: A thread of carbon nanotubes more than 100 metres long has been pulled from a fiery furnace. The previous record holder was a mere 30 centimetres long.

      Carbon nanotubes are stronger than steel and better conductors than copper, but are often just a thousandth of a millimetre in length. (...)

      The carbon nanotubes are made by injecting ethanol into a fast-flowing stream of hydrogen gas. The gas carries the carbon-containing molecules into the centre of a furnace where temperatures soar above 1000 yC.

  10. Superconductivity: Turn Up The Temperature, Nature Next Article Bookmark and Share

    Expert: High-temperature superconductors are far more complex than their low-temperature counterparts, and there are many indications that their unique properties result from the competition between more than one type of order parameter. The electron correlations that are responsible for high-temperature superconductivity are still a mystery. (...) using the order-parameter approach to analyse the interaction between the superconductivity in each layer of the material. The authors have melded these ideas of tunnelling, charge transfer and order into a simple Landau-Ginzburg expression for the total energy of the system.

    1. An Explanation For A Universality Of Transition Temperatures In Families Of Copper Oxide Superconductors, Nature Next Article Bookmark and Share

      Expert: A remarkable mystery of the copper oxide high-transition-temperature (Tc) superconductors is the dependence of Tc on the number of CuO2 layers, n, in the unit cell of a crystal. (...) Here we show that the quantum tunnelling of Cooper pairs between the layers2 simply and naturally explains the experimental results, (...). We calculate the bell-shaped curve and show that, if materials can be engineered so as to minimize the charge imbalance as n increases, Tc can be raised further.

  11. Mount Fuji: A Sleeping Giant Stirs, Nature Next Article Bookmark and Share

    Expert: If that movement portends an eruption, the consequences could be dire. "Nowhere in the world is a large capital city so close to a huge volcano," says Koyama. At the very least, dust and ash would bring Tokyo to a halt by stopping traffic, grounding planes and even corrupting computer hard drives. (...) Even more worrying is new evidence that Fuji has at times produced deadly pyroclastic flows - hot surges of gas, ash and rock that can travel at up to 150 kilometres per hour.

  12. From The Tallest To (One Of) The Fattest: Fate Of The American Population, Econ. & Human Biol. Next Article Bookmark and Share

    Abstract: The American height advantage over Western and Northern Europeans was between 3 and 9 cm in mid-19th century, and Americans tended to be underweight. However, today, the exact opposite is the case as the Dutch, Swedes, and Norwegians are the tallest, and the Danes, British and Germans-even the East-Germans--are also taller, (...) by as much as 3-7 cm. Americans also have shorter lives. The hypothesis is worth considering that this adverse development is related to the greater social inequality, an inferior health care system, and fewer social safety nets (...) in spite of higher per capita income.

  13. Intermingled Basins In A Two Species System, J. Math. Biol. Next Article Bookmark and Share

    Abstract: We present simple examples of (competitive) two species systems with complicated dynamic behaviour. From almost all initial conditions one of the two species dies out. But the survivor is unpredictable: The basins of the two chaotic one-species attractors are everywhere dense and intermingled.
    • Source: Intermingled Basins In A Two Species System, F. Hofbauer, J. Hofbauer - josef.hofbaueraunivie.ac.at, P. Raith, T. Steinberger, DOI: 10.1007/s00285-003-0253-3, Journal of Mathematical Biology, online: 2004/02/06
    • Contributed by Pritha Das - prithadas01ayahoo.com

  14. Optimal Traffic Organization In Ants Under Crowded Conditions, Nature Next Article Bookmark and Share

    Expert: Here, we present an experimental study of ants confronted with two alternative routes. We find that pheromone-based attraction generates one trail at low densities, whereas at a high level of crowding, another trail is established before traffic volume is affected, which guarantees that an optimal rate of food return is maintained. This bifurcation phenomenon is explained by a nonlinear modelling approach. (...) The balancing mechanism between cohesive and dispersive forces appears to be generic in natural, urban and transportation systems.

    1. Fitness Consequences Of Avian Personalities In A Fluctuating Environment, Alphagalileo & Proc. Biol. Sc. Next Article Bookmark and Share

      Abstract: Animals, like humans, differ in personality. The existence of genetic variation in personality poses the question how variation in animal personality is maintained in natural populations. We measured a personality trait (exploratory behaviour in a novel environment) in a common garden bird, the great tit, and studied how personality affects survival and offspring production in the wild. We show that certain types do better in certain years, whereas other types do better in other years. Such fluctuating selection may explain why different personality types can coexist in natural populations.

  15. Apparent Competition And Recovery From Infection, J. Theor. Biol. Next Article Bookmark and Share

    Abstract: We use mathematical models to analyse how the recovery rate from infection influences the fitness of a host in a setting of interspecific competition. We show that sub-optimal immunity against pathogens can be advantageous for the host (...). Weaker immunity allows the parasite to be used as a biological weapon, and this increases the fitness of the host relative to a competitor. A parameter region is observed in which the outcome of competition depends on the initial conditions. We extend this model (...) find that the outcome depends on the migration rate of the host species.

  16. Calm Mind Creates Complex Tunes, BBC News Online Next Article Bookmark and Share

    Expert: Researchers are developing a system that will play more intricate music the more relaxed you are
    Peace Composed could be used for stress management
    "The piece consists of seven distinct layers, including bass, piano, strings and flutes," (...).

    "As the user relaxes the layers are peeled back and they drift deeper into the music."

    (...) They detect specific changes in conductivity that happen - a Galvanic Skin Response (GSR) - dependent upon a person's state.

    The difficult part is concentrating on relaxing in order to "unlock" the seven different layers of the music, and some who have tried the system have only heard a bass line, indicating their stress management is ineffective.

  17. Pointed Questions on Missile Defense System, NY Times Next Article Bookmark and Share

    Expert: Weapons experts outside the Pentagon have argued that there is no imminent threat that would justify the program's huge expenditures, up $1.2 billion from the previous year, and the deployment of a system whose capabilities are unknown. (...) "The idea of fly before buy is very difficult for this system," (...) "This is fly as we buy." (...) The office said that while the program had addressed many earlier criticisms, none of the components of the system had been tested in "its deployed configuration."

    1. The Internet and Political Campaigns, NY Times Next Article Bookmark and Share

      Expert: Television and print media are one way.(...). The Internet is two-way communication between the candidate and the supporters. And it's multi-way. The supporters can talk to each other. They can all talk to the candidate in the campaign. And so there's an ownership of the campaign that happens. And in real involvement, a totally different level - a networking that people do among their friends.(...) There's only one medium in the world that can change this country, let all these Americans come together and they get the change they want.

    2. Egypt rebuffs US over regional reform, The Guardian Next Article Bookmark and Share

      Expert: Democratic reform cannot be imposed on the Middle East from outside, the Egyptian president, Hosni Mubarak, told Tony Blair yesterday, rebuffing US proposals for the region. "The president reiterated that any modernization has to stem from the traditions and the culture in the area," (...). "There is no magic wand that you can use to bring democracy overnight and definitely it cannot be dictated," Mr Kaffas added, though he said Egypt would welcome US and European support "to help the nations in the area reach peace and prosperity".

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

    1. Analysis: Madrid Terrorism Probe, NPR Audio Next Article Bookmark and Share

      Expert: NPR's Bob Edwards talks with terrorism analyst Charles Shoebridge, founder of the Crime Consultancy in London, Thursday's terrorist attacks in Madrid.

      1. Britain Frees Citizens Sent Home from Cuba, NPR Audio Next Article Bookmark and Share

        Expert: The British government has set free all five British citizens flown home this week from the U.S. prison at Guantanamo Bay, Cuba. All five men were let go without charges. Many Britons are questioning why it took Prime Minister Tony Blair two years to win their freedom if the evidence against the men did not warrant a U.K. trial.

    2. Guantanamo Update, NPR TON Next Article Bookmark and Share

      Expert: The latest on the five former Guantanamo prisoners to Britain earlier this week. The men were let go without charges and flown home this week from the U.S. prison in Cuba.
      • Source: Guantanamo Update, Jackie Northam, Emily Harris, Eugene Fidell, Robert Turner, NPR TON, 04/03/11

  19. Links & Snippets Next Article Bookmark and Share

    1. Other Publications Next Article Bookmark and Share

      1. Deconfined Quantum Critical Points, T. Senthil, Ashvin Vishwanath, Leon Balents, Subir Sachdev, Matthew P. A. Fisher, Science 5 March 2004: 1490-1494.
      2. Late Miocene Teeth from Middle Awash, Ethiopia, and Early Hominid Dental Evolution, Yohannes Haile-Selassie, Gen Suwa, Tim D. White, Science 5 March 2004: 1503-1505
      3. European Seasonal and Annual Temperature Variability, Trends, and Extremes Since 1500, Jurg Luterbacher, Daniel Dietrich, Elena Xoplaki, Martin Grosjean, Heinz Wanner, Science 5 March 2004: 1499-1503.
      4. Functional Anatomy of the Attentional Modulation of Time Estimation, Jennifer T. Coull, Franck Vidal, Bruno Nazarian, Francoise Macar, Science 5 March 2004: 1506-1508.
      5. Anthropology: The Earliest Hominins--Is Less More?, David R. Begun, Science 5 March 2004: 1478-1480
      6. Planetary Science: A Wet Early Mars Seen in Salty Deposit, Richard A. Kerr, Science 5 March 2004: 1450
      7. Microbiology: Reconstructing The Wild Types, Edward F. Delong, 04/03/04, Nature 428, 25 - 26, A challenging way to characterize the world's naturally occurring microbes is to piece together whole genomes from complex communities. An unusually acidic microbial habitat provides the setting for a ranging shot on that target., DOI: 10.1038/428025a
      8. Cell Division: Feeling Tense Enough?, Iain M. Cheeseman, Arshad Desai, 04/03/04, Nature 428, 32 - 33, DOI: 10.1038/428032b
      9. Killer Waves, 04/03/06, Science News, Scientists are using sophisticated computer models, field studies of coastal geology, and data from tidal gauges to assess the tsunami risk for coastal residents.
      10. Early Ancestors Come Together: Humanity's Roots May Lie In Single, Diverse Genus, 04/03/06, Science News, Newly discovered fossil teeth in eastern Africa that are more than 5 million years old suggest that the earliest members of the human family evolved as a single, anatomically diverse genus.
      11. Bubble Fusion: Once-Maligned Claim Rebounds, 04/03/06, Science News, Researchers who reported 2 years ago that they created nuclear-fusion reactions inside bubbles imploding in a vat of liquid acetone have now bolstered their controversial claim with new evidence.
      12. Body Builders, 04/03/06, Science News, By growing stem cells on three- dimensional polymer scaffolds, tissue engineers hope to mimic natural tissue development and ultimately produce replacement body parts.
      13. Keeping Abreast Of Serotonin's Roles, 04/03/06, Science News, Serotonin, a chemical typically associated with the brain, also controls milk production in mammary glands.
      14. Gene Transfer Puts Good Fats In Mammals, 04/03/06, Science News, Scientists have used a worm gene to genetically engineer mice whose tissues are unusually rich in the heart-healthy fats found mainly in fish.
      15. Quantum Sentinels, 04/03/06, Science News, Quantum physics may soon help physicians track whether a cancer has spread.
      16. Trade Deficit Explainer, 04/03/11, NPR TOTN, NPR's Neal Conan and guests look at the trade defecit -- what it means and how it affects the economy. Guest: Mike Santoli *Senior editor at Barron's
      17. Assessment And Assortment: How Fishes Use Local And Global Cues To Choose Which School To Go To, A. J. W. Ward, P. J. B. Hart, J Krause, 2004/03/08, Alphagalileo & Biology Letters
      18. Do Positive Interactions Increase With Abiotic Stress?, F. T. Maestre, J. Cortina, 2004/03/08, Alphagalileo & Biology Letters
      19. Forelimb Proportions And The Evolutionary Radiation Of Neornithes, R. L. Nudds, G. J. Dyke, J. M. V. Rayner, 2004/03/08, Alphagalileo & Biology Letters
      20. To Understand Butterfly Wing Colors, Biologists Develop First Transgenic Butterflies, 2004/03/08, ScienceDaily & University At Buffalo
      21. Temperature At Birth Linked To Health Later In Life, E. Dickinson - edickinsonabmj.com, 2004/03/09, Alphagalileo
      22. Getting Personal With Your Wearable Network, T. Morris - tmorrisagopa-cartermill.com, 2004/03/10, Alphagalileo
      23. Key Gene Identified For Development Of Inner-ear Structure Required For Balance, 2004/03/10, ScienceDaily & The Jackson Laboratory
      24. Online Secure Chatting System Using Discrete Chaotic Map, H. S. Kwok - hskwokaee.cityu.edu.hk, W. K. S. Tang, K. F. Man, Jan. 2004, International Journal of Bifurcation and Chaos, DOI: 10.1142/S0218127404009053
      25. Computational Model Of Obsessive-Compulsive Disorder: A Unified Explanation Of The Treatments, S. Kubota - kubotaasat.t.u-tokyo.ac.jp, K. Aihara, Jan. 2004, International Journal of Bifurcation and Chaos, DOI: 10.1142/S0218127404009156
      26. Ethics, Science, And The Mechanisation Of The World Picture, H. Rosenbrock, online: 2003/12/03, AI & Society, DOI: 10.1007/s00146-003-0293-7
      27. New Evidence Of Animal Consciousness, D. R. Griffin, G. B. Speck - gayleawjh.harvard.edu, online: 2003/12/05, Animal Cognition, DOI: 10.1007/s10071-003-0203-x
      28. Consequences Of Symbiosis For Food Web Dynamics, B.W. Kooi, L. D. J. Kuijper, S.A. L. M. Kooijman, online: 2004/01/02, Journal of Mathematical Biology, DOI: 10.1007/s00285-003-0256-0
      29. A Branching Model For The Spread Of Infectious Animal Diseases In Varying Environments, P. Trapman - trapmanavet.uu.nl, R. Meester, H. Heesterbeek, online: 2004/03/03, Journal of Mathematical Biology, DOI: 10.1007/s00285-004-0267-5
      30. Human Leg Design: Optimal Axial Alignment Under Constraints, M. Günther - guentheratat.physik.uni-tuebingen.de, V. Keppler, A. Seyfarth, R. Blickhan, online: 2004/03/04, Journal of Mathematical Biology, DOI: 10.1007/s00285-004-0269-3

    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 Next Article Bookmark and Share

        Interdisciplinary Colloquium, Security Bytes, Security/Life/Terror , Lancaster, 04/07/17-19
      1. Arbeitskreis Physik sozio-ökonomischer Systeme Jahrestagung (AKSOE), Regensburg, Germany, 04/03/08-12
      2. 11th Annual Winter Chaos Conference Dynamical Systems Thinking in Science and Society, Stony Creek, CT, USA, 04/03/12-14
      3. Alife Mutants' Hackingsession on Systems and Organisms, Bielefeld (Germany), 04/03/06-13
      4. Capital Science 2004, Washington, 04/0! 3/20-21
      5. Fractal 2004, "Complexity and Fractals in Nature", 8th Intl Multidisciplinary Conf, Vancouver, Canada, 04/04/04-07
      6. 6th German Workshop on Artificial Life 2004 (GWAL-6), Bamberg, Germany, 04/04/14-16
      7. The 9th IEEE Intl Conf on Engineering of Complex Computer Systems, Florence, Italy, 04/04/14-16
      8. Complexity Science and the Exploration of the Emerging World, Austin, TX, 04/04/17
      9. 2004 Advanced Simulation Technologies Conference (ASTC'04), Arlington, VA., USA, 04/04/18-22
        10. NKS (New Kind of Science) 2004 Conference and Minicourse, Boston, Massachusetts, 04/04/22-25
      10. IDS'04 - Intentional Dynamic Systems Symposium, Memphis, TN, USA, 04/04/24-26
      11. New Horizons In Search Theory , Newport, RI, 04/04/26-28
      12. Urban Vulnerability and Network Failure: Constructions and Experiences of Emergencies, Crises and Collapse, Manchester, UK, 04/04/29-30
      13. What Really Matters ?The Global Forum 2004, Santa Fe, NM, 04/05/02-04
      14. 5th International Conference on Complex Systems (ICCS2004), Boston, MA, USA, 04/05/16-21
      15. 3rd Intl Conf on Systems Thinking in Management (ICSTM 2004) "Transforming Organizations to Achieve Sustainable Success", Philadelphia, Pa, USA, 04/05/19-21
      16. 4th Intl Conf on Fractals And Dynamic Systems In Geoscience, München, Germany, 04/05/19-22
      17. 9th Annual Workshop on Economics and Heterogeneous Interaction Agents (WEHIA04), Kyoto, Japan, 2004/05/27-29
      18. 13th International Symposium on HIV & Emerging Infectious Diseases, Toulon, France, 04/06/03-05
      19. ECC8 Experimental Chaos Conference, Florence, Italy, 04/06/14-17
      20. An Intl Tribute to Francisco V arela, Paris,04/06/18-20
      21. 7th Intl Conf on Linking Systems Thinking, Innovation,Quality, Entrepreneurship and Environment (STIQE), MARIBOR, SLOVENIA, 04/06/24-26
      22. NAACSOS 2004, North American Association for Computational Social and Organizational Science, Pittsburgh PA, 04/06/27-29
      23. Statphys - Kolkata V An International Conference on Complex Networks: Structure, Function and Processes , Kolkata, India, 04/06/27-30
      24. ICAD 2004 10th International Conference on Auditory Display, Sydney, Australia, 04/07/06-09
      25. 3rd Intl School Topics in Nonlinear Dynamics Discrete Dynamical Systems and Applications , Urbino (Italy), 04/07/07-09
      26. `Perspectives on Nonlinear Dynamics 2004 (PNLD-2004), Chennai, India, 04/07/12-15
      27. From Animals To Animats 8, 8th Intl Conf On The Simulation Of Adaptive Behavior (SAB'04), Los Angeles, USA, 04/07/13-17
      28. 14th Annual International Conference The Society for Chaos Theory in Psychology & Life Sciences , Milwaukee, WI, USA, 04/07/15-18
      29. Facing Complexity, Wellington, NZ, 04/07/15-17
      30. Gordon Research Conference on "Oscillations & Dynamic Instabilities In Chemi! cal Systems", Lewiston, ME, 04/07/18-23
      31. 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
      32. 8th World Multi-Conference on Systemics, Cybernetics and Informatics, Orlando, Florida, USA, 04/07/18-21
      33. 2004 Summer Simulation MultiConference (SummerSim'04), San Jose Hyatt, San Jose, California, 04/07/25-29
      34. SME 2004 Symposium on Modeling and Control of Economic Systems , University in Redlands, CA, 04/01/28-31
      35. 6th International Mathematica Symposium (IMS 2004), Banff, Canada, 04/08/02-06
      36. Fractals and Natural Hazards at 32nd Intl Geological Congress (IGC), Florence, Italy, 04/08/20-28
      37. ICCC 2004, IEEE International Conference on Computational Cybernetics, , Vienna, Austria, 04/08/30-09/01
      38. ANTS 2004, 4th International Workshop on Ant Colony Optimization and Swarm Intelligence, Brussels, Belgium, 04/09/05-08
      39. Dynamic Ontology, An Inquiry into Systems, Emergence, Levels of Reality, and Forms of Causality, Trento, Italy, 04/09/08-11
        40. 9th Intl Conf on the Simulation and Synthesis of Living Systems (ALIFE9), Boston, Massachusetts, 04/09/12-15
      40. The Verhulst 200 on Chaos, Brussels, BELGIUM, 04/09/16-18
      41. The 8th Intl Conf on Parallel Problem Solving from Nature (PPSN VIII), Birmingham, UK, 04/09/18-22
      42. XVII Brazilian Symposium on Artificial Intelligence, Sao Luis, Maranhao - Brazil, 04/09/22-24
      43. TEDMED Conference , Charleston SC, 04/10/12-15
      44. Wolfram Technology Conference, Champaign, Illinois, 04/10/21-23
      45. 6th Intl Conf on Electronic C! ommerce ICEC'2004: Towards A New Services Landscape, Delft, The Netherlands, 04/10/25-27
      46. Complexity and Philosophy Workshop - 2-Day Conference , Rio de Janeiro, 04/11

      1. Strategic Thinking in a Complex World, Smithsonian Resident Associates Program Bookmark and Share

        Expert:
        Recognizing the world as one vast interconnected system is essential to understanding the level of complexity in today's global environment.
        This course is designed to give you a working knowledge of complexity science, and to show how to apply insights from the new science to your life and work, and to world events.

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