Complexity Digest 2003.43
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- Trade Liberalization, Corruption, And Environmental Policy Formation: Theory And Evidence, J. Env. Econ. & Management
- Viscous Demand, J. Econ. Theory
- Bolivian Leader's Ouster Seen as Warning on U.S. Drug Policy, NYTimes
- Pattern Excitation-Based Processing: The Music of The Brain, arXiv
- Neural Correlates of the Complexity of Rhythmic Finger Tapping, NeuroImage
- Glycine Receptors On the Move, Science
- Prion Diseases: A Nucleic-Acid Accomplice?, Nature
- Hierarchical Organization In Complex Networks, Phys. Rev. E
- How to Search a Social Network, arXiv
- Analysis of Norms Game in networked societies, arXiv
- 2003 World Rock Paper Scissors Championship, NPR
- The Living Cell As A Paradigm For Complex Natural Systems, Complexus
- Does Tumor Growth Follow A "Universal Law"?, J. Theor. Biol.
- Evolution: Opportunity Versus Innovation, Nature
- Single-Gene Speciation By Left-Right Reversal, Nature
- Females Increase Offspring Heterozygosity And Fitness Through Extra-Pair Matings, Nature
- Sipping From a Poisoned Chalice, Science
- A Healthful Dab of Radiation?, Science
- Regrow Your Own, Wired
- Self-assembled Nanocells Function As Non-volatile Memory, ScienceDaily
- Electronic Memory Research That Dwarfs the Silicon Chip, NYTimes
- Halfway to Diamond, Science
- Bonding Changes in Compressed Superhard Graphite, Science
- A Cultural Scorecard Says West Is Ahead, NYTimes
- String Theory: Trying to Visualize Many, Many Dimensions of Weirdness, NYTimes
- The Stovepipe-How The Intelligence System Got Off Course, New Yorker
- Complex Challenges: Global Terrorist Networks
- Planning For Smallpox Outbreaks, Nature
- Student: I Put Box Cutters On Airplanes Five Weeks Ago, New York Daily News
- Scott Simon Essay: Airport Security, NPR Weekend Edition
- Rare Candor, Newsweek
- White House Withholding Sept 11 Files - Report, Reuters
- Links & Snippets
- Other Publications
- Webcast Announcements
- Conference & Call for Papers Announcements
- ComDig Announcement: New ComDig Archive in Beta Test
- Special Announcement: Artists Explore Complex Systems, Federal Reserve Board
Trade Liberalization, Corruption, And Environmental Policy Formation: Theory And Evidence, J. Env. Econ. & Management
Abstract: This study explores the linkages between trade policy, corruption, and environmental policy. We begin by presenting a theoretical model that produces several testable predictions, including: (i) the effect of trade liberalization on the stringency of environmental policy depends on the level of corruption; and (ii) corruption reduces environmental policy stringency. Using panel data from a mix of developed and developing countries from 1982 to 1992, we find evidence that supports these conjectures. We view these results as representing an attempt at understanding the myriad of complex relationships that exist in an open economy.
Abstract: In many markets, demand adjusts slowly to changes in prices, i.e., demand is "viscous". This viscosity gives each firm some monopoly power, since it can raise its price above that of its competitors without immediately losing all of its customers. The resulting equilibrium pricing behavior and market outcomes can differ significantly from what one would predict in the absence of demand viscosity. In particular, the model explains the importance of market share as an investment, as well as "kinked demand curves". It also explains how apparently "competitive" pricing behavior can lead to outcomes that mimic those of collusion.
- Source: Viscous Demand, R. Radner - rradnerstern.nyu.edu, DOI: 10.1016/S0022-0531(03)00115-7, Oct. 2003
- Contributed by Pritha Das - prithadas01yahoo.com
Bolivian Leader's Ouster Seen as Warning on U.S. Drug Policy, NYTimes
Excerpts: American officials have considered Bolivia such a success in the anti-drug campaign that they were looking to replicate their strategy in Peru. But there, too, signs of discontent are appearing, beginning with the re-emergence of the Shining Path, the guerrilla group that terrorized the country throughout the 1980's. "Right now Shining Path is strongest in coca growing areas," (...). "To the extent that the U.S. pushes on eradication targets without any kind of flexibility, it makes people there much more amenable to turning to violent protest or insurgent groups(...)."
Pattern Excitation-Based Processing: The Music of The Brain, arXiv
Abstract: An approach to information processing based on the excitation of patterns of activity by non-linear active resonators in response to their input patterns is proposed. Arguments are presented to show that any computation performed by a conventional Turing machine-based computer, called T-machine in this paper, could also be performed by the pattern excitation-based machine, which will be called P-machine. A realization of this processing scheme by neural networks is discussed. In this realization, the role of the resonators is played by neural pattern excitation networks, which are the neural circuits capable of exciting different spatio-temporal patterns of activity in response to different inputs. Learning in the neural pattern excitation networks is also considered. It is shown that there is a duality between pattern excitation and pattern recognition neural networks, which allows to create new pattern excitation modes corresponding to recognizable input patterns, based on Hebbian learning rules. Hierarchically organized, such networks can produce complex behavior. Animal behavior, human language and thought are treated as examples produced by such networks.
Contributing Editor's Note: This paper shows that theoretical "brain like" machines can perform the same computations than a Turing machine. Could a Turing machine perform all the computations a "brain-like" machine can do? If so, can this be achieved only in theory, or also in practice?
Neural Correlates of the Complexity of Rhythmic Finger Tapping, NeuroImage
Abstract: Using functional magnetic resonance imaging (fMRI), we studied the neural correlates of the complexity of rhythmic finger tapping. Our experiments measured the brain activity of 13 subjects performing rhythmic tapping on a response box with multistable rhythms of 1 to 5 different interresponse intervals. From the button press response times, we constructed phase portraits where we identified the number of clusters of periodic points in a rhythm that corresponded to the number of different beats of the rhythm performed. We then constructed a statistical model for correlation analysis involving the following behavioral parameters: rate of tapping and number of beats in a rhythm. The tapping rate correlated with the brain activity in the ipsilateral pre/postcentral gyrus, and the number of beats (complexity) was correlated with activations in the primary motor cortex, supplementary motor area, basal ganglia, thalamus, and cerebellum. A region of interest (ROI) average analysis showed that the complexity of a rhythm had a differential correlation with the activity in these regions. The cerebellum and the thalamus showed increasing activity, and the basal ganglia showed decreasing activity with complexity of a rhythm. These results identify the areas involved in a rhythm generation and the modulation of brain activity with the complexity.
Glycine Receptors On the Move, Science
Summary: Semiconductor quantum dots (QDs) have recently emerged as probes with the potential to revolutionize fluorescence imaging. Dahan et al. (A href=" http://www.sciencemag.org/cgi/content/short/302/5644/442" target="new">p. 442
) have now detected single QD-tagged glycine receptors in living cultured spinal neurons. By combining in vivo monitoring and post hoc electron microscopic analysis, the dynamics of receptors was monitored over time and the entry of a receptor into the synapse was directly observed.
Prion Diseases: A Nucleic-Acid Accomplice?, Nature
Excerpts: Prion proteins that trigger a cascade of protein misfolding in the brain are suspected of being the sole transmissible cause of some brain-destroying diseases. But nucleic acids could be their partner in crime.
(...) hypothesis, which holds that prions are "transmissible particles that are devoid of nucleic acid"; however, direct proof of the 'protein-only' nature of TSE agents has remained elusive. (...) evidence that nucleic acids might, after all, be involved in propagating TSE infectivity. (...) suggest that vertebrate single-stranded RNA is required for the in vitro amplification of PrPSc.
Hierarchical Organization In Complex Networks, Phys. Rev. E
Abstract: Many real networks in nature and society share two generic properties: they are scale-free and they display a high degree of clustering. We show that these two features are the consequence of a hierarchical organization, implying that small groups of nodes organize in a hierarchical manner into increasingly large groups, while maintaining a scale-free topology. We find that several real networks, such as the World wide web, actor network, the Internet at the domain level, and the semantic web obey this scaling law, indicating that hierarchy is a fundamental characteristic of many complex systems. #level
How to Search a Social Network, arXiv
Abstract: We address the question of how participants in a small world experiment are able to find short paths in a social network using only local information about their immediate contacts. We simulate such experiments on a network of actual email contacts within an organization as well as on a student social networking website. On the e-mail network we find that small world search strategies using a contact's position in physical space or in an organizational hierarchy relative to the target can effectively be used to locate most individuals. However, we find that in the online student network, where the data is incomplete and hierarchical structures are not well defined, local search strategies are less effective. We compare our findings to recent theoretical hypotheses about underlying social structure that would enable these simple search strategies to succeed and discuss the implications to social software design.
Analysis of Norms Game in networked societies, arXiv
Abstract: Norms, defined as generally accepted behaviour in societies without central authority (and thus distinguished from laws), are very powerful mechanism leading to coherent behaviour of the society members. This paper examines, within a simple numerical simulation, the various effects that may lead to norm formation and stability. The approach has been first used by Axelrod, who proposed two step model of norm and meta-norm enforcement. We present here an extension and detailed analysis of the original work, as well as several new ideas that may bear on the norm establishment mechanisms in societies. It turns out that a relatively simple model for simulated norm enforcement predicts persistent norm breaking even when it is associated with high punishment levels. The key factors appear to be the combination of the level of penalty for breaking the norm and proximity of norm enforcers. We also study a totally different mechanism of norm establishment, without meta-norms but using instead the direct bonus mechanism to norm-enforcers.
2003 World Rock Paper Scissors Championship, NPR
Excerpts: A fierce battle for supremacy gets under way in Toronto this weekend. At the 2003 Rock Paper Scissors World Championship, competitors will pit fist against splayed fingers against outstretched hand. (...)
One of the first tricks learned by the novice is to hold back a throw of paper until the last possible moment to dupe an opponent into believing that you may actually be throwing a rock. This allows you the extra few milliseconds for fine-tuning your approach and delivery.
The Living Cell As A Paradigm For Complex Natural Systems, Complexus
Excerpts: (...) John von Neumann predicted that a science of complexity will emerge from the 20th century. He started from an intuitive statement about functional complexity: 'An object is of the highest degree of complexity if it can do very difficult and involved things'. He nevertheless outlined 'a decisive property of complexity' (...). What makes up a cell is a network of thousands of chemical reactions (...). All the structural and functional patterns are not determined in a simple way by the genome as if in the execution of a computer program.
Does Tumor Growth Follow A "Universal Law"?, J. Theor. Biol.
Abstract: A general model for the ontogenetic growth of living organisms has been recently proposed. Here we investigate the extension of this model to the growth of solid malignant tumors. A variety of in vitro and in vivo data are analysed and compared with the prediction of a "universal" law, relating properly rescaled tumor masses and tumor growth times. The results support the notion that tumor growth follows such a universal law. Several important implications of this finding are discussed, including its relevance for tumor metastasis and recurrence, cell turnover rates, angiogenesis and invasion.
- Source: Does Tumor Growth Follow A "Universal Law"?, C. Guiot - caterina.guiotunito.it, P. G. Degiorgis, P. P. Delsanto, P. Gabriele & T. S. Deisboeck, DOI: 10.1016/S0022-5193(03)00221-2, 2003/10/02
- Contributed by Pritha Das - prithadas01yahoo.com
Evolution: Opportunity Versus Innovation, Nature
Excerpts: Why have some evolutionary lineages produced many more species than others? (...), being in the right place at the right time is a plausible answer.
(...).For example, plant-feeding in insects has evolved on several occasions and seems generally to have resulted in an increased net rate of speciation. Ricklefs concludes, however, that key innovations are unlikely to have been the major cause of variation in speciation rates among the passerines. Instead, those species that happened to be in the right place at the right time to exploit ecological opportunities (….).
Single-Gene Speciation By Left-Right Reversal, Nature
Excerpts: A land-snail species of polyphyletic origin results from chirality constraints on mating.
A single gene gives rise to the mirror-image form of a snail's body plan, which could become established as a different species if mating is prevented between snails of different chirality by genital mismatch. Here we (...) demonstrate the parallel evolution of reversal between left and right lineages of the Japanese land snail Euhadra. We find that the different mirror-image forms have evolved in favour of the genetically dominant handedness as a result of single-gene speciation.
Females Increase Offspring Heterozygosity And Fitness Through Extra-Pair Matings, Nature
Excerpts: Females in a variety of species commonly mate with multiple males, and there is evidence that they benefit by producing offspring of higher genetic quality; however, the nature of these genetic benefits is debated. (...) Females should thus benefit from mating with genetically dissimilar males. In many birds, social monogamy restricts mate choice, but females may circumvent this by pursuing extra-pair copulations. Here we show that female blue tits, Parus caeruleus, increase the heterozygosity of their progeny through extra-pair matings.
Sipping From a Poisoned Chalice, Science
Excerpts: Dioxin and its chemical cousins are among the most deadly compounds on Earth. Spike a rat's water with 10 parts per billion--the equivalent of 7 teaspoons of dioxin dissolved in an Olympic-sized swimming pool--and there's a 50/50 chance that the rat will die of liver cancer. Yet even tinier concentrations of dioxins fed to rats inhibit tumors. The seemingly paradoxical findings have some scientists suggesting what would have been unthinkable not long ago: testing modified dioxins as an anticancer agent in humans.
A Healthful Dab of Radiation?, Science
Excerpts: Radiation risks are now calculated based mainly on cancers among 86,600 survivors of the two atomic bombs dropped on Japan. These human data "are the gold standard," notes carcinogenesis expert Julian Preston of the U.S. Environmental Protection Agency (EPA). The incidence of solid cancers in the survivors rises in a straight line with dose. This suggests that any increase in dose delivers an increase in risk, with no safe level of radiation. But at the lowest doses, there are too few cancers to calculate the actual risks.
Regrow Your Own, Wired
Excerpts: (...) newts hold the key to human healing. (...) This constant replenishment is what enables our 70-year lifespan, but cell growth is calibrated to run at a trickle: too slow to fix major damage. Lose an arm or a kidney and that's it; we can't generate the lost part any more than a car can sprout a new transmission.
Why? It's an evolutionary mystery. (...) But a paradox of regeneration is that the higher you move up the evolutionary chain, the less likely you'll have the ability to regrow limbs or organs.
Self-assembled Nanocells Function As Non-volatile Memory, ScienceDaily
Excerpts: (...) demonstrated that disordered assemblies of gold nanowires and conductive organic molecules can function as non-volatile memory, one of the key components of computer chips. "A large part of the cost associated with creating integrated circuits comes from the painstaking precision required to ensure that each of the millions of circuits on the chip are placed in exactly the right spot. Our research shows that ordered precision isn't a prerequisite for computing. It is possible to make memory circuits out of disordered systems." (...) a self-assembled ensemble of molecular electronic components has been used to create complex devices (...).
Electronic Memory Research That Dwarfs the Silicon Chip, NYTimes
Excerpts: (...) build circuits from molecules that are randomly laid out between larger contact points.
By repeating tiny electrical pulses between adjacent contact points, the researchers were able to create regions they referred to as nanocells, which would function both as memory and as computer logic circuits.
So far, the researchers have created circuits that are about 10 times as dense as silicon chips, though they switch on and off far more slowly, Mr. Tour said.
(...) applications where the stored information is permanent or changes infrequently.
Halfway to Diamond, Science
Summary: In diamond, carbon forms sp3 bonds in a three-dimensional structure, whereas in graphite, carbon sheets form through sp2 bonds. A variety of enigmatic structures between these two have been hinted at when graphite is compressed at ambient temperatures. Mao et al. (A href="http://www.sciencemag.org/cgi/content/short/302/5644/425" target="new">p.
) used near K-edge spectroscopy to resolve this transition. At pressures around 17 gigapascals, half of the weak bonds between the graphite layers convert to diamondlike bonds to create a material hard enough to indent diamond.
Bonding Changes in Compressed Superhard Graphite, Science
Abstract: Compressed under ambient temperature, graphite undergoes a transition at 17 gigapascals. The near K-edge spectroscopy of carbon using synchrotron x-ray inelastic scattering reveals that half of the -bonds between graphite layers convert to -bonds, whereas the other half remain as -bonds in the high-pressure form. The x-ray diffraction pattern of the high-pressure form is consistent with a distorted graphite structure in which bridging carbon atoms between graphite layers pair and form -bonds, whereas the nonbridging carbon atoms remain unpaired with -bonds. The high-pressure form is superhard, capable of indenting cubic-diamond single crystals.
- Source: Bonding Changes in Compressed Superhard Graphite, Wendy L. Mao, Ho-kwang Mao, Peter J. Eng, Thomas P. Trainor, Matthew Newville, Chi-chang Kao, Dion L. Heinz, Jinfu Shu, Yue Meng, Russell J. Hemley,, Science Oct 17 2003: 425-427.
A Cultural Scorecard Says West Is Ahead, NYTimes
Excerpts: "As I write, it appears Europe's run is over," he asserts. "In another few hundred years, books will probably be exploring the reasons why some completely different part of the world became the locus of great human accomplishment. Now is a good time to stand back in admiration. What the human species is today it owes in astonishing degree to what was accomplished in just half a dozen centuries by the peoples of one small portion of the northwestern Eurasian land mass."
String Theory: Trying to Visualize Many, Many Dimensions of Weirdness, NYTimes
Abstract: (...) multiple theories were each in fact different facets of a single underlying theory that he called M theory, which requires 11 dimensions and allows for the existence of not just strings but multidimensional membranes - "branes" in the new cosmic jargon - that could be island universes.(...)
"M stands for magic, mystery or matrix, according to taste," he says in the "11th Dimension" episode, then adds, "Some cynics have also occasionally suggested that M may also stand for murky, because our level of understanding of the theory is so primitive."
Contributed by Dean LeBaron
The Stovepipe-How The Intelligence System Got Off Course, New Yorker
Excerpts: A retired C.I.A. officer described for me some of the questions that would normally arise in vetting: "Does dramatic information turned up by an overseas spy square with his access, (...)? (...)" The vetting process is especially important when one is dealing with foreign-agent reports-sensitive intelligence that can trigger profound policy decisions. In theory, no request for action should be taken directly to higher authorities-a process known as "stovepiping"-without the information on which it is based having been subjected to rigorous scrutiny.
Complex Challenges: Global Terrorist Networks
Planning For Smallpox Outbreaks, Nature
Excerpts: Mathematical models of viral transmission and control are important tools for assessing the threat posed by deliberate release of the smallpox virus and the best means of containing an outbreak. Models must balance biological realism against limitations of knowledge, and uncertainties need to be accurately communicated to policy-makers. (...) spread in contemporary populations must be elucidated largely from historical studies undertaken before disease eradication in 1979. We review the use of models in smallpox planning within the broader epidemiological context set by recent outbreaks of both novel and re-emerging pathogens.
- Source: Planning For Smallpox Outbreaks, Neil M. Ferguson, Matt J. Keeling, W. John Edmunds, Raymond Gani, Bryan T. Grenfell, Roy M. Anderson, Steve Leach, DOI: 10.1038/nature02007, Nature 425, 681 - 685, 16 October 2003
Student: I Put Box Cutters On Airplanes Five Weeks Ago, New York Daily News
Excerpts: On Sept. 15, the Transportation Security Administration received an e-mail from Heatwole saying he had "information regarding six security breaches" at the Raleigh-Durham and Baltimore-Washington airports between Feb. 7 and Sept. 14, the FBI affidavit said. (...)
The affidavit does not say what was done about the e-mail after it was received in September. The bags containing box cutters and other items were not discovered until last Thursday night, after a lavatory on one of the planes had maintenance problems and workers found them.
Editor's Note: During a recent stopover I tried to report a security breach on TSA's toll free number (1-866-289-9673, Monday thru Friday 8 am - 10 pm). I dialed the number about a dozen times from 8a.m. to 9:30a.m. only to get a recorded message that I should call back "during business hours".
Excerpts: NPR's Scott Simon reflects on the college student who was charged this week for planting box cutters on airplanes to, as he claims, draw attention to security threats.
Excerpts: Either way, the truths that Rumsfeld put to paper in the memo leaked to USA Today reflect the hard reality of our engagement in Iraq, and should be the public posture of the administration. The fact that Rumsfeld dares to say the administration lacks "the metrics to measure" progress in fighting terrorism is the most chilling aspect of his frosty analysis. "It seems the harder we work, the behinder we get," he says. They can put that on the administration's tombstone.
White House Withholding Sept 11 Files - Report, Reuters
Excerpts: The head of the federal commission investigating the September 11, 2001 attacks says the White House is withholding highly classified intelligence documents and he is ready to subpoena them if they are not released within weeks, according to a report. (...)
It was the first explicit public warning to the White House that it risked subpoena and a possible courtroom battle with the commission over access to the documents, which include Oval Office intelligence reports that preceded the attacks.
Links & Snippets
- Smart Servers as Watchdogs for Trouble on the Web, ANNE EISENBERG, NY Times
- 'Qwik Clot' Aids Wounded Troops in the Field , The U.S. military is using a new product to help wounded soldiers in the field. It's a blood-clotting powder that looks a bit like kitty litter and is surprisingly effective. NPR's Allison Aubrey reports.
- Hölder Exponent Spectra For Human Gait, ddejBJ&iclitemid=XbfaadajBI&tid=WbehchdCE
N. Scafetta, L. Griffin and B.J. West, Physica A: Statistical Mechanics and its Applications 328(3-4) (2003) 561-583
- A Hybridization Model for the Plasmon Response of Complex Nanostructures, E. Prodan, C. Radloff, N. J. Halas, P. Nordlander, Science Oct 17 2003: 419-422.
- Solvent-Free Electrolytes with Aqueous Solution-Like Conductivities, Wu Xu, C. Austen Angell, Science Oct 17 2003: 422-425.
- Always Good Turing: Asymptotically Optimal Probability Estimation, Alon Orlitsky, Narayana P. Santhanam, Junan Zhang, Science Oct 17 2003: 427-431
- Centenarian Advantage: Some old folks make cholesterol in big way , Science News, Vol. 164, No. 16, Oct. 18, 2003
Also available in
People who live to be nearly 100 and their offspring are more likely to have large cholesterol particles in their blood, a condition conducive to good health.
- Your Spiral or Mine? Snail gene reverses coil, makes new species, Science News, Vol. 164, No. 16, Oct. 18, 2003
Also available in Audible format
A snail with a shell spiraling to the right can't mate readily with a lefty, so changes in the single gene that controls shell direction have created new snail species.
- Erectus Ahoy, Prehistoric Seafaring Floats Into View, Bruce Bower, Science News, Vol. 164, No. 16, Oct. 18, 2003, p. 248. A researcher who explores the nautical abilities of Stone Age people by building rafts and having crews row them across stretches of ocean contends that language and other cognitive advances emerged 900,000 years ago with Homo erectus, not considerably later among modern humans, as is usually assumed.
- Danger, Danger, Cry Injured Cells, Damaged cells may release uric acid to rouse the immune system. Science News, Vol. 164, No. 16, Oct. 18, 2003
Also available in
- State Dept. Study Foresaw Trouble Now Plaguing Iraq, Eric Schmitt, Joel Brinkley, 03/10/19, NYTimes
- Dreams versus Reality: Plenary Debate Session on Quantum Computing, This is a transcript of a debate on quantum computing that took place at 6:00pm, Wednesday, 4th June 2003, La Fonda Hotel, Santa Fe, USA. Transcript editor: Derek Abbott. Pro Team: Carlton M. Caves, Daniel Lidar, Howard Brandt, Alex Hamilton. Con Team: David Ferry, Julio Gea-Banacloche, Sergey Bezrukov, Laszlo Kish. Derek Abbott, 03/10/21, arXiv, quant-ph/0310130
- Nanowires Make Flexible Circuits, Eric Smalley, 03/10/22, Technology Research News
- Full Disclosure on Leaks, Robert Booth, 03/10/22, NYTimes
- Let Someone Else Do the Talking, Alton Frye, 03/10/22, NYTimes
- Cell Cycle Sees The Light, Sean Lawler, 03/10/22, The Scientist
- The Mullahs and the Bomb, Gary Milhollin, 03/10/23, NYTimes
- Venture to Offer ID Card for Use at Security Checks, John Schwartz, 03/10/23, NYTimes
- Rumsfeld Sees Need to Realign Military Fight Against Terror, Thom Shanker, 03/10/23, NYTimes
- Failing Teachers, Bob Herbert, 03/10/24, NYTimes
- Iraqis on the Sidelines, Susan E. Rice, 03/10/24, NYTimes
- The Speed Of Information In A 'Fast-Light' Optical Medium , Michael D. Stenner, Daniel J. Gauthier, Mark A. Neifeld, 16 October 2003, Nature 425, 695 - 698, DOI: 10.1038/nature02016
- The Search For Homology: A Paradigm For Molecular Interactions?, M. Dutreix - marie.dutreixcurie.u-psud.fr, R. Fulconis & J. L Viovy, 2003, DOI: 10.1159/000070465
- Modeling Of Protein Interaction Networks, A. Vázquez, A. Flammini, A. Maritan - maritansissa.it, A. Vespignani, 2003, DOI: 10.1159/000067642
- Complex Systems In Biomedicine in The Architecture of Biological Networks, S. Wuchty, E. Ravasz & A.-L. Barabási, 2003, DOI: 10.1007/s10115-002-0094-1
- Complexity Of Hearing, A. Kern - albertini.phys.ethz.ch, 2003, Modeling, Computing, and Mastering Complexity 2003, Soc. f Compu. Econ.
- Network-Based Analysis Of Metabolic Regulation In The Human Red Blood Cell, N. D. Price, J. L. Reed, J. A. Papin, S. J. Wiback, B. O. Palsson - bpalssonucsd.edu, 2003/10/04, DOI: 10.1016/S0022-5193(03)00237-6
- Health Effects From Mobile Phone Radiation, M. Meriläinen - minna.merilainenhelsinki.fi, 2003/10/17
- Unusual Form Of Memory Loss Often Confused With Alzheimer's Disease, 2003/10/17, ScienceDaily & Northwestern Univ.
- Toad Tadpoles And The 'Laurel And Hardy' Effect, K. Baxter - mediaofficekent.ac.uk, 2003/10/20
- Mammal Population Regulation, Keystone Processes And Ecosystem Dynamics, A. R. E. Sinclair, 2003/10/29, DOI: 10.1098/rstb.2003.1359
- Cooperative Breeding In Oscine Passerines: Does Sociality Inhibit Speciation?, A. Cockburn, 2003/11/07
- Stock Prices In Japan Rise At Night, Y. Tsutsui - tsutsuiecon.osaka-u.ac.jp, Dec. 2003, DOI: 10.1016/S0922-1425(02)00049-X
- Communicating Global Activism: Strengths And Vulnerabilities Of Networked Politics, W. L. Bennett, Jun. 2003
- Production, Consumption, And General Equilibrium With Physical Constraints, F. C. Krysiak - krysilcasp.zrz.tu-berlin.de, D. Krysiak, Nov. 2003, DOI: 10.1016/S0095-0696(03)00028-7
- A People-Counting System Using A Hybrid RBF Neural Network, D. Huang, T. W. S. Chow, Oct. 2003
- Terahertz Rays See Into The Nanoworld, Rensselaer Polytechnic Institute researchers have shown that terahertz rays can be used in conjunction with scanning near-field microscopy to circumvent the usual "diffraction limit" on imaging methods, which restricts the resolution to the same order of magnitude as the wavelength of the radiation..., Oct. 23, 2003, Kurzweilai.Net Newsletter
- Emotions And Behaviour: Data From A Cross-Cultural Recognition Study, N. S. Consedine, K. T. Strongman & C. Magai, Sep. 2003
- Scale-Free And Hierarchical Structures In Complex Networks, A.-L. Barabási, Z. Dezs, E. Ravasz, S.-H. Yook & Z. Oltvai, to appear 2004
& INTERACTION: Evolutionary Substrates of Communication,
Signaling, and Perception in the Dynamics of Social
Complexity, London, UK, 03/10/08-10
Semantic Web and Language Technology - Its Potential and
Practicalities, Bucharest, Romania,
2003, 7th European Conference on Artificial
Life, Dortmund, Germany,
LeBaron's Archive of Daily Video
Commentary, Ongoing Since February
International Conference Bifurcation
2003, Univ. Southampton, UK, 27-30
Santa Fe Institute President About His Vision for SFI's
Future Role, (Video, Santa Fe, NM,
1st Intl Symp on Fluctuations and
Noise, Santa Fe, NM,
Sackler Colloquium on Mapping Knowledge
Domains, Video/Audio Report,
and Surprise: Questions on Working with the Unexpected and
Unknowable, The University of Texas
Austin, Texas USA, 2003/04/10-12
Trends In Industrial Partnership And Innovation Management
At European Research Laboratories,
CERN, Geneva, 2003/03/19 (with webcast)
Streamed videos of Archived Lectures and Live
Ann Intl Conf, Soc f Chaos Theory in Psych & Life
Sciences, Boston, MA, USA,
Value; The Good, The Bad, and The
Unknown, Financial Executives
International (FEI), 03/08/26, 5:00-6:00 p.m.
Conference & Call for Papers Announcements
Thematic Institute - Algorithms And Challenges In Hard
Combinatorial Problems, Turin, Italy, 03/10/01-30
& Artificial Life International Competition,
Practice: Competency for Medical Professionals, Boston,
- Intl Congress
on Computational Intelligence, Medellin, Colombia,
Society for Cybernetics (ASC) 2003 Conference
(H.v.Foerster), Vienna, Austria, 03/11/10-15
Workshop, MIT, Cambridge, MA, 03/11/15-16
- Trends And
Perspectives In Extensive And Non-Extensive Statistical
Mechanics, In Honour Of The 60th Birthday Of Constantino
Tsallis, Angra Dos Reis, Brazil, 2003/11/19-21
'03: 3rd IEEE International Conference on Data
Mining, Melbourne, Florida, USA, 03/11/19-22
Intl Conf on Systems Science and Systems Engineering,
Hong Kong, 03/11/25-28
International Workshop on Meta-Synthesis and Complex
System, Guangzhou, China, 03/11/29-30
Intelligence and Law, Special Issue on Electronic
Democracy, Submissions Deadline: 03/11/30
Organizational Management Conference With Ralph Stacey,
Washington, DC, 03/12/02-04
with Everett Rogers and Ralph Stacey: Bridging the Quality
Chasm Between Medical Knowledge and Clinical Practice,
Rockville, MD, 03/12/02-03
with Ralph Stacey: On Thinking and Learning About Complex
Responsive Processes, Rockville, MD, 03/12/03-04
- Intl Wkshp Networks
of Interacting Machines: Industrial Production Systems and
Biological Cells, Berlin, Germany, 03/12/11-13
International Workshop on the Mathematics and Algorithms of
Social Insects, Georgia Tech, Atlanta, Georgia, USA;
WSEAS Intl Conf on Non-linear Analysis, Non-linear
Systems and Chaos, Athens, Greece, 03/12/29-31
Physical, Biological and Social Systems, MIT,
Cambridge, MA, 04/01/05-09
Biennial Seminar on the Philosophical, Epistemological, and
Methodological Implications of Complexity Theory,
Havana, Cuba, 04/01/07-10
Western Simulation MultiConference (WMC'04), San Diego,
CA., USA, 04/01/18-24)
International Workshop on Biologically Inspired Approaches to
Advanced Information Technology, Lausanne, Switzerland,
- Leadership in
Rapidly Changing Business Environments -Learning and Adapting
in Time, Cambridge, MA, 04/02/26-27
Intl ICSC Symposium Engineering Of Intelligent Systems (EIS
2004), Island of Madeira, Portugal, 04/02/29-03/02
Physik sozio-ökonomischer Systeme Jahrestagung
(AKSOE), Regensburg, Germany, 04/03/08-12
Science 2004, Washington, 04/03/20-21
2004, "Complexity and Fractals in Nature", 8th Intl
Multidisciplinary Conf, Vancouver, Canada, 04/04/04-07
Advanced Simulation Technologies Conference (ASTC'04),
Arlington, VA., USA, 04/04/18-22
Vulnerability and Network Failure: Constructions and
Experiences of Emergencies, Crises and Collapse,
Manchester, UK, 04/04/29-30
International Conference on Complex Systems (ICCS2004),
Boston, MA, USA, 04/05/16-21
- 3rd Intl Conf
on Systems Thinking in Management (ICSTM 2004) "Transforming
Organizations to Achieve Sustainable Success",
Philadelphia, Pa, USA, 04/05/19-21
Annual Workshop on Economics and Heterogeneous Interaction
Agents (WEHIA04),, Kyoto, Japan, 2004/05/27-29
International Symposium on HIV & Emerging Infectious
Diseases, Toulon, France, 04/06/03-05
- From Animals To
Animats 8, 8th Intl Conf On The Simulation Of
Adaptive Behavior (SAB'04), Los Angeles, USA,
World Multi-Conference on Systemics, Cybernetics and
Informatics, Orlando, Florida, USA, 04/07/18-21
Summer Simulation MultiConference (SummerSim'04), San
Jose Hyatt, San Jose, California, 04/07/25-29
2004, 4th International Workshop on Ant Colony
Optimization and Swarm Intelligence, Brussels, Belgium,
8th International Conference on Parallel Problem
Solving from Nature (PPSN VIII), Birmingham, UK,
Brazilian Symposium on Artificial Intelligence, Sao
Luis, Maranhao - Brazil, 04/09/22-24
ComDig Announcement: New ComDig Archive in Beta Test
We are in the process of upgrading the Complexity Digest archives to a format with improved search capabilities. Also, we will finally be able to adequately publish the valuable feedback and comments from our knowledgable readers. You are cordially invited to become a beta tester of our new ComDig2 archive.
Special Announcement: Artists Explore Complex Systems, Federal Reserve Board
COMPLEXITY, the first major museum exhibition about complex systems, is on display at the Federal Reserve Board in Washington, DC, ongoing - 03/11/28. The Washington exhibition is being co-sponsored by the Washington Center for Complexity and Public Policy and the Fine Arts Program of the Federal Reserve Board.
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