Evolutionary Epistemology, Language, and Culture, Conference Webcast
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When Things Get Complicated, Boston Globe
Complexity theorists want to reproduce these patterns with computer models, in order to gain a kind of insight that equations or statistics supposedly cannot match. What's more, they want to see both the forest and the trees, by viewing big patterns through the local rules of interaction that produce them.
(...) But with computer simulations already a staple in biology and finance, and gaining currency in many other fields of inquiry and industry, the vision of a world made for modeling may be catching on.
Excerpts: "Assembly performed by astronauts would be too expensive and risky," says Shen. His group is collaborating with NASA to develop intelligent robotic systems that can coordinate their own activities, so that they do not have to be precisely monitored and controlled by humans.
Several research groups have demonstrated that teams of mobile, communicating robots can perform complex tasks: for example, they can collaborate to push objects over a surface. This is reminiscent of the way ants show group intelligence when carrying out collective tasks such as foraging.
The prototype robots practice docking manoeuvres on an air hockey table.
© Polymorphic Robotics Laboratory
Through an analogy with sand sculpting, I can better explain the significance of building successful project management strategies in an entrepreneurial company. (...)
Project: Similar to evaluating the sand before you begin sculpting, you need to take a good look at the environment where you will be establishing project management plan. What are the characteristics of the staff you will be working with? Who is the most adaptable and will be your major supporter? Like the sand, without proper evaluation before you start, the work will crumble.
Putting the finishing touches on Stuck Santa during the Ft. Myers Beach Championships.
The New "Molecular Economy", Business Week
Excerpts: A new generation of scientists is inventing the next new world with its own novel nomenclature. Their terms of art, phrases such as "combinatorial chemistry," "gene shuffling," "high-throughput screening," and "MEMS" sound just as arcane to the average person now as computer terminology did in 1971.
But pay attention. In the same way that researchers at PARC and Fairchild Semiconductor and Bell Labs created technology that established a new economy based on information, scientists in labs today are inventing a future based on molecular technologies.
It's Alive: The Coming Convergence of Information, Biology, and Business by Christopher Meyer and Stan Davis
Is the U.S. Brain Gain Faltering?, Science
Excerpts: Academic officials in China, the largest source of foreign applicants for many U.S. programs, say that anticipated visa problems are only one of several reasons Chinese students may be thinking twice about coming to the United States. A growth in postgraduate education in China is giving domestic students a better chance to complete their educations at home, says Yan Xuehong, deputy director of student affairs for the postgraduate school at CAS [Chinese Academy of Sciences, Ed.]. And she says there is also a rising demand for these graduates.
A Foot in Each Country, Science
Excerpts: Chinese scientists have tremendous potential, says Lahn, (...). But "they lack vision. I thought that the way to change that was not to go in as the director of some institute, but to demonstrate a new approach by being a role model." The new center, he says, will "serve as a cultural messenger of how to do science." (...)
Lahn is part of an apparently burgeoning international phenomenon. Although the numbers remain small, foreign-born researchers are reaching out to colleagues back home while remaining anchored in the United States (...).
The Rise Of Café Culture, Nature
Excerpts: A night out in a bar is all the more enjoyable if you can digest some science too. That's the lesson of a growing movement whose character may be local but whose reach is potentially global (...).
Given that the first Café Scientifique was held in 1997, the spread of the events has been remarkable and should be welcomed. Governments across Europe have stressed the need to improve dialogue between scientists and the public. The café organizers, (...), have created a network of successful events that does just that.
Automata Make Antisense, Nature
Excerpts: Information-carrying DNA strands can be used to perform simple computations, but have so far been little more than toys. Can molecular computers be more broadly useful - in medicine, for instance?
(...) such molecular automata might be used to augment so-called antisense technologies, carrying out a diagnosis in vivo (that is, in a living cell) that automatically controls drug delivery.
Antisense drugs are oligonucleotides - short, single-stranded DNA molecules - that offer the promise of treating diseases caused by the expression of a harmful gene, for example a cancer-causing gene.
Citizens, Slaves, And Foreigners: Aristotle On Human Nature, Amer. Pol. Sc. Rev.
Abstract: To most readers, Aristotle's many references to nature throughout the first book of the Politics imply a foundational role for nature outside and prior to politics. Aristotle, they claim, pairs nature with necessity and, thus, sets nature as a standard that fixes the boundaries of inclusion and exclusion in political life. Through readings of Aristotle on the nature of citizens, slaves, and foreigners in the Politics, this essay argues, in contrast, that, to Aristotle, nature, especially human nature, is changeable and shaped by politics. (...) this essay demonstrates (...) Aristotle is especially keen to guard against any assimilation of nature to necessity.
Minority Voices In The American States: Do Social And Institutional Context Matter?, British J. Pol. Sc.
Abstract: Previous research has shown that institutional factors, particularly 'direct democracy', along with racial context, shape policy outcomes in the fifty American states. But less is understood about the impact of such factors on attitudes towards government of racial and ethnic minorities. The passage of ballot initiatives targeting minority interests might be expected to have a negative effect on these groups. This study considers the impact of institutional and social context on attitudes about government responsiveness (...) there is strong evidence that citizens in states with frequent exposure to direct democracy are more likely to perceive that government is responsive to their needs.
What Are Elections For? Conferring The Median Mandate, British J. Pol. Sc.
Abstract: Democracy is often described as a system in which a majority of electors choose one out of a number of competing parties to form a government and carry out its programme. Unfortunately, spontaneous majorities rarely form in support of one party. We generalize from a 'government' to a 'median' mandate, in which the median elector chooses the pivotal party in parliament, which then translates his or her preferences into public policy. To check this we investigate how accurately parliaments and governments represent the left-right position of the median voter in each of twenty parliamentary democracies.
Who Tests Voting Machines?, NY Times
Excerpts: But there is, to begin with, a stunning lack of transparency surrounding this process. Voters have a right to know how voting machine testing is done. Testing companies disagree, routinely denying government officials and the public basic information. Kevin Shelley, the California secretary of state, could not get two companies testing his state's machines to answer even basic questions. One of them, Wyle Laboratories, refused to tell us anything about how it tests, or about its testers' credentials. "We don't discuss our voting machine work," (...).
Ecology for a Crowded Planet, Science
Excerpts: Studying the few and rapidly shrinking undisturbed ecosystems is important, but now is the time to focus on an ecology for the future. Because our planet will be overpopulated for the foreseeable future and natural resource consumption shows no signs of slowing, human modifications of the environment will only increase. Thus, a research perspective that incorporates human activities as integral components of Earth's ecosystems is needed, as is a focus on a future in which Earth's life support systems are maintained while human needs are met.
- Source: Ecology for a Crowded Planet, Margaret Palmer, Emily Bernhardt, Elizabeth Chornesky, Scott Collins, Andrew Dobson, Clifford Duke, Barry Gold, Robert Jacobson, Sharon Kingsland, Rhonda Kranz, Michael Mappin, M. Luisa Martinez, Fiorenza Micheli, Jennifer Morse, Michael Pace, Mercedes Pascual, Stephen Palumbi, O. J. Reichman, Ashley Simons, Alan Townsend, Monica Turner, Science : 1251-1252., 04/05/28
Evolving Eco-system: a Network of Networks, arXiv
Abstract: Ecology and evolution are inseparable. Motivated by some recent experiments, we have developed models of evolutionary ecology from the perspective of dynamic networks. In these models, in addition to the intra-node dynamics, which corresponds to an individual-based population dynamics of species, the entire network itself changes slowly with time to capture evolutionary processes. After a brief summary of our recent published works on these network models of eco-systems, we extend the most recent version of the model incorporating predators that wander into neighbouring spatial patches for food.
Consumption Pattern, Trade, And Greenhouse Gas Leakage In India, Env. & Dev. Econ.
Abstract: The policy discussions for sharing the global responsibility for abatement of greenhouse gas (GHG) emissions by individual countries take account neither of the pattern of their final consumption nor of the role of globalization through trade in the leakage of GHGs across national boundaries. This paper gives the methodology of estimating the total emissions of a GHG (...). The paper estimates the effect of trade on the net leakage of carbon dioxide and methane from India. It shows a significant net leakage of carbon dioxide from India for the observed consumption pattern in the 1990s.
Global Vineyard, Can Technology Take On A Warming Climate?, Science News
In precision viticulture, grape growers tailor their agricultural practices to different parts of the vineyard. First, the farmers create detailed maps of their vineyard that depict critical parameters such as the quality, depth, clay content, water content, and pH of soil, as well as the amounts of water, fertilizers, pesticides, and other chemicals that were used in various sectors of the site. Then, the growers assess the yield and quality of grapes that they harvest, using measures such as the number of grape bunches per vine,, (...).
WATER SEARCH. Prototype equipment such as this ground-penetrating radar could help grape growers quickly and easily monitor the soil moisture in their vineyards.
Characterization Of Dendrites As Nonlinear Computation Devices, Neurocomputing
Abstract: From the spines to the soma, signal processing in the neuron is intrinsically nonlinear. In this paper we present first results of a project whose objective is to identify/characterize dendrites as nonlinear devices in the hope that the resulting model will be of use in bio-inspired connectionist architectures. The project starts by applying the method to a computer model of the Purkinje cell as a guide for the design of real neurophysiological experiments, as well as an aid for the interpretation of results.
Does A Dendritic Democracy Need A Ruler?, Neurocomputing
Abstract: In hippocampal CA1 cells, distance-dependent synaptic scaling helps maintain a "dendritic democracy" where distal and proximal synapses on average contribute equally to the cell's firing. A "dendritic ruler", for example a concentration gradient, might be necessary for synaptic scaling. Alternatively, synapses could "self-regulate" by gauging their distance from the soma using properties of backpropagating spikes. We show in a model CA1 cell that the delay (...) predict the synapse's location and amplitude at the soma well, though the amplitude of the spikes do not. This suggests that a dendritic ruler is not required to scale synapses.
- Source: Does A Dendritic Democracy Need A Ruler?, D. C. D. Sterratt - david.c.sterratted.ac.uk, A. van Ooyen, DOI: 10.1016/j.neucom.2004.01.078, Neurocomputing, Jun. 2004, online 2004/03/05
- Contributed by Atin Das - dasatinyahoo.co.in
Networks Of Neurons That Emit And Recognize Signatures, Neurocomputing
Abstract: Recent experiments have revealed the presence of neural fingerprints in the activity of several neurons of the pyloric central pattern generator of crustacean. These signatures consist of specific spike timings in the bursting activity of the neurons. The existence of cellular mechanisms to identify the origin of individual neural signals, and the study of information processing based on this identification have been neglected in the context of theoretical approaches to the nervous system. (...) we present a simple model to study the ability of a neural network to process information based on the emission and recognition of neural signatures.
- Source: Networks Of Neurons That Emit And Recognize Signatures, A. Tristán - antonio.tristanii.uam.es, F. F. de B. Rodríguez - francisco.rodriguezii.uam.es, E. Serrano - eduardo.serranoii.uam.es, P. Varona - pablo.varonaii.uam.es, DOI: 10.1016/j.neucom.2004.01.020, Neurocomputing, Jun. 2004, online 2004/03/05
- Contributed by Atin Das - dasatinyahoo.co.in
Ageing: Mice And Mitochondria, Nature
An Autonomous Molecular Computer For Logical Control Of Gene Expression, Nature
Epigenetics In Human Disease And Prospects For Epigenetic Therapy, Nature
Moving Towards Individualized Medicine With Pharmacogenomics, Nature
Are Humans Seasonally Photoperiodic?, J. Biol. Rhythms
Abstract: Humans exhibit seasonal variation in a wide variety of behavioral and physiological processes, and numerous investigators have suggested that this might be because we are sensitive to seasonal variation in day length. The evidence supporting this hypothesis is inconsistent. A new hypothesis is offered here-namely, that some humans indeed are seasonally photoresponsive, but others are not, and that individual variation may be the cause of the inconsistencies that have plagued the study of responsiveness to photoperiod in the past. This hypothesis is examined in relation to seasonal changes in the reproductive activity of humans (...).
- Source: Are Humans Seasonally Photoperiodic?, Bronson F. H. - bronsonmail.utexas.edu, DOI: 10.1177/0748730404264658, Journal of Biological Rhythms, Jun. 2004
- Contributed by Atin Das - dasatinyahoo.co.in
Remembrance Of Smells Past: How The Brain Stores Those Meaningful Memories, ScienceDaily
Excerpts: Smells trigger memories but can memories trigger smell, and what does this imply for the way memories are stored? A UCL study of the smell gateway in the brain has found that the memory of an event is scattered across sensory parts of the brain (...). "Our study suggests that, rather than clumping together the sights, sounds and smells of a memory into one bit of the brain, the memory is distributed across different areas and can be re-awakened through just one of our sensory channels. This mechanism would allow human beings more flexibility in retrieving their memories."
Small World Networks Key To Memory, NewScientist
Excerpts: If you recall this sentence a few seconds from now, you can thank a simple network of neurons for the experience. That is the conclusions of researchers who have built a computer model that can reproduce an important aspect of short-term memory.
The key, they say, is that the neurons form a "small world" network.
(...) neurons in this region might be able to switch between two stable states, a property called bistability.
When storing a memory, neurons would participate in self-sustaining bursts of electrical activity.
Path Integration In Desert Ants: How To Make A Homing Ant Run Away From Home, Alphagalileo & Proc. Biol. Sc.
Abstract: Imagine you are out in the desert and watch a food-laden ant stubbornly running in the opposite direction to home. We have caused the ants to display this paradoxical behaviour by training them to repeat landmark-guided homeward runs (...). When the ants have arrived at the nest after their first homeward run, their path integrator is reset to zero state. If they are then displaced back to the feeder and perform their second (and later third, fourth, etc.) homeward run based on landmark guidance alone, their path integrator (...) would generate a vector that pointed away from home.
Birds Use Herbs To Protect Their Nests, ScienceDaily
Excerpts: Researchers (...) suggest that some birds may select nesting material with antimicrobial agents to protect their young from harmful bacteria. "If the fresh herbs and plant materials that parent birds bring into the nest have a sufficient concentration of antimicrobial compounds, they could protect the nestlings from harmful bacteria." To find out if plants brought into the nest might prevent disease (...) tested twelve different volatile plant materials against feather-degrading bacteria. Results showed that several types of plant materials and extracts including usnic acid, ascorbic acid, yarrow, and two oak species inhibited the growth of a number of harmful bacteria.
Excerpts: The simple dice game known as Pig is surprisingly complex when you're trying to find an optimal strategy for playing it.
The game's object is to be the first player, rolling a die, to reach a total of 100 points.(...)
In general, as shown by the irregular landscape of the roll/hold boundary for Pig, details of optimal play can be far from intuitive.
Interestingly, if both players play optimally, the starting player wins 53 percent of the time.
The Large-Scale Organization of Chemical Reaction Networks in Astrophysics, SFI Working Papers
Abstract: The large-scale organization of complex networks, both natural and artificial, has shown the existence of highly heterogeneous patterns of organization. Such patterns typically involve scale-free degree distributions and small world, modular architectures. One example is provided by chemical reaction networks, such as the metabolic pathways. The chemical reactions of the Earth's atmosphere have also been shown to give rise to a scale-free network. Here we present novel data analysis on the structure of several astrophysical networks including the chemistry of the planetary atmospheres and the interstellar medium. Our work reveals that Earth's atmosphere displays a hierarchical organization, close to the one observed in cellular webs. Instead, the other astrophysical reaction networks reveal a much simpler pattern consistent with an equilibrium state. The implications for large-scale regulation of the planetary dynamics are outlined.
A Heavenly Example of Scale-free Networks and Self-organized Criticality, Physica A
Abstract: The sun provides an explosive, heavenly example of self-organized criticality. Sudden bursts of intense radiation emanate from rapid rearrangements of the magnetic field network in the corona. Avalanches are triggered by loops of flux that reconnect or snap into lower-energy configurations when they are overly stressed. Our recent analysis of observational data reveal that the loops (links) and footpoints (nodes), where they attach on the photosphere, embody a scale-free network. The statistics of the avalanches and of the network structure are unified through a simple dynamical model where the avalanches and network co-generate each other into a complex, critical state. This particular example points toward a general dynamical mechanism for self-generation of complex networks.
Experpt: Soft computing is a consortium of methodologies, (like fuzzy logic, neural networks, genetic algorithms, rough sets), that works synergistically and provides, in one form or another, flexible information processing capabilities for handling real life problems. Its aim is to exploit the tolerance for imprecision, uncertainty, approximate reasoning and partial truth in order to achieve tractability, robustness, low solution cost, and close resemblance with human like decision-making. (...) Soft computing tools, individually or in integrated manner, are turning out to be strong candidates for performing data mining tasks efficiently.
See Also: Information Sciences: Special Issue on Soft Computing Data Mining
- Source: Soft Computing Data Mining, Sankar K. Pal, Ashish Ghosh, DOI: 10.1016/j.ins.2003.03.012, Information Sciences 163(1-3):1-3, 2004-06-14
Reductions of Hidden Information Sources, SFI Working Papers
Abstract: In all but special circumstances, measurements of time-dependent processes reflect internal structures and correlations only indirectly. Building predictive models of such hidden information sources requires discovering, in some way, the internal states and mechanisms. Unfortunately, there are often many possible models that are observationally equivalent. Here we show that the situation is not as arbitrary as one would think. We show that generators of hidden stochastic processes can be reduced to a minimal form and compare this reduced representation to that provided by computational mechanics-the $epsilon$-machine. On the way to developing deeper, measure-theoretic foundations for the latter, we introduce a new two-step reduction process. The first step (internal-event reduction) produces the smallest observationally equivalent $sigma$-algebra and the second (internal-state reduction) removes $sigma$-algebra components that are redundant for optimal prediction. For several classes of stochastic dynamical systems these reductions produce representations that are equivalent to $epsilon$-machines.
Abstract: The internet is known to display a highly heterogeneous structure and complex fluctuations in its traffic dynamics. Congestion seems to be an inevitable result of users' behavior coupled with network dynamics and its effects should be minimized by choosing appropriate routing strategies. But what are the requirements of routing depth in order to optimize the traffic flow? In this paper we analyze the behavior of internet traffic with a topologically realistic spatial structure as described in a previous study (S-H. Yook et al., Proc. Natl. Acad. Sci. USA, 99 (2002) 13382). The model involves self-regulation of packet generation and different levels of routing depth. It is shown that it reproduces the relevant, key, statistical features of the internet's traffic. Moreover, we also report the existence of a critical path horizon defining a transition from poorly performing traffic to highly efficient flow. This transition is actually a direct consequence of the web's small world architecture exploited by the routing algorithm. Once routing tables reach the network diameter, the traffic experiences a sudden transition from poorly performing to highly efficient behavior. It is conjectured that routing policies might have spontaneously reached such a compromise in a distributed manner. The internet would thus be operating close to a critical path horizon.
Complex Challenges: Global Terrorist Networks
U.S. Refocusing Military Strategy for War on Terror, Rumsfeld Says, The Information Warfare Site
Excerpts: The new concepts guiding U.S. responsibilities in the world are based in partnerships with allies, greater force flexibility, rapid deployment capabilities and a cross-regional strategy, Rumsfeld said.
"This cause is an international one, important to all civilized societies," Rumsfeld said. "Success depends on encouraging friends and allies with whom we are so interdependent, to not be terrorized by threats, or isolated by fears."
(...) "A terrorist needs to succeed only occasionally; but as defenders, we need to be successful always."
Excerpts: However, after the attacks on World Trade Center and the Pentagon, symbols of U.S.' economic and military dominance, terrorist organizations of global reach like al Qaeda have identified the world's energy system as a major vulnerability and a certain way to deliver a blow to America's oil dependent economy as well as global economy at large.(...) terrorists looking for a big bang might find oil, to quote al Qaeda, the "umbilical cord and lifeline of the crusader community," the object of the next major assault on the west, (...).
- Source: Terror's Next Target, Gal Luft, Anne Korin, The Journal of International Security Affairs, 03/12, Institute for the Analysis of Global Security,, 04/05/30
Americans Are Turning To BBC For News, Cox News Service
Excerpts: But with the United States ever more involved in an increasingly turbulent world, more and more Americans are turning to the British Broadcasting Corp. for a different take on the news of the day.(...)
"Americans were actually turning to BBC World for a global perspective that was not biased toward any of the countries, that was sort of balanced about what was going on," Young said.
In November 2001, according to the Nielsen ratings, 466,000 households in the United States watched BBC World News on an average evening. Now the number is 930,000.
Links & Snippets
- Education and Racial Inequality in Post-Apartheid South Africa, Malcolm Keswell, SFI Working Papers, DOI: SFI-WP 04-02-008
- On the Derivation of Power-Law Distributions in the Canonical Ensemble, Rudolf Hanel, Stefan Thurner, SFI Working Papers, DOI: SFI-WP 04-06-013
- Disaster Movies Raise The Stakes, James Bregman, BBC News Online entertainment staff
- Worm Life Span Set By Chromosome Tips, For worms, longer chromosome tips mean longer lives.
- Smart Music System Skips To Chorus, 04/05/28, Helen Pearson, Nature Science update,
The programme highlights the chorus and other repetitive areas of music.
© Masataka Goto
- Nanoparticles Illuminate Brain Tumors For Days Under MRI, 04/04/26, Oregon Health & Science University, Press Release,
OHSU study finds tiny crystals also help brain lesion tissue to be viewed under microscope
- Pharmacogenomics Could Replace 'Trial-And-Error' With Science From The Human Genome, 04/04/26, St. Jude Children's Research Hospital , Press Release, Nature article from St. Jude points to challenges ahead and approaches that will be required to individualize drug therapy based on a patient's genetic make-up
- News Items for Agent-Based Computational Economics (ACE), 04/05
- Branching Out: Semiconducting Nanotrees Could Boost Electronics, 04/05/22, Science News, Forests of semiconducting nanotrees could form the basis of future solar cells, low-energy lighting, and other optical or microelectronic devices.
- Humanity's Strange Face, 04/05/22, Science News, New fossil finds in a Romanian cave fuel controversy over whether different, closely related species interbred on the evolutionary path that led to people.
- Young Talent On Display: Tomorrow's Scientists And Engineers Win Recognition, Rewards, Ben Harder, 04/05/22, Science News, The three top winners of the 2004 Intel International Science and Engineering Fair hail from high schools on different continents.
- Antidepressant Could Help Reverse Paralysis, Charlotte Grayson, 04/05/24, WebMD Medical News
- Universe Measured: We're 156 Billion Light-years Wide!, By Robert Roy Britt
Senior Science Writer, 04/05/24,
If you've ever wondered how big the universe is, you're not alone.
- Staying on the Path – One Atom at a Time, 04/05/27, NSF Press Release,
Surface rendering of a neuron. A Delauney tessellation scheme was use to discretize the volume. This new approach can be applied to any vertically single-branched cell.
Credit: Yun-Bo Yi and Ann Marie Sastry, University of Michigan
- Researchers Zero In On A Cause Of Aging, 04/05/27, Experiment points to defect in cells
Alice Dembner, Boston Globe
- Chimp Chromosome Creates Puzzles, 04/05/27, Laura Nelson, Nature Science update,
Thousands of chimp genes could significantly differ from those in humans.
- Striking Back, Alison Abbott, 04/05/27, Nature 429, 338 - 339. Stroke has disabled millions of people, stealing their ability to walk or communicate. Can future victims be helped by treatments that stimulate the growth of new brain cells?
, DOI: 10.1038/429338a
- Granular Materials: The Brazil Nut Effect — In Reverse, Troy Shinbrot, 04/05/27, Nature 429, 352 - 353 , DOI: 10.1038/429352b
- Hormone Therapy: Physiological Complexity Belies Therapeutic Simplicity, Judith L. Turgeon, Donald P. McDonnell, Kathryn A. Martin, Phyllis M. Wise, 04/05/28, Science : 1269-1273
- Changes in Earth's Reflectance over the Past Two Decades, E. Pallé, P. R. Goode, P. Montańés-Rodríguez, S. E. Koonin, 04/05/28, Science : 1299-1301
- Cellular Interactions in the Stem Cell Niche, Andrew E. Wurmser, Theo D. Palmer, Fred H. Gage, 04/05/28, Science : 1253-1255.
- Saturn: The Unfinished Symphony, Richard A. Kerr, 04/05/28, Science : 1230-1232.
- Stretching the Limits of Evolutionary Biology, Carl Zimmer, 04/05/28, Science : 1235-1236
- For The Universe, A Bouncing Baby Planet, Harvey McGavin, 04/05/29, The Independent
- Chemical Knot: Scientists assemble legendary symbol by interlocking molecules, Alexandra Goho, 04/05/29, Science News,
MOLECULAR ICON. In forming these Borromean rings, zinc ions (silver spheres) guided the assembly of molecular chains into interlocking circles.
- Red Sweat: Hippo Skin Oozes Antibiotic Sunscreen, 04/05/29, Science News, The hippo version of sweat, which is red-orange, contains pigments that can block microbial growth and some ultraviolet light.
- Cosmic Push: X-Ray Study Confirms Universe's Dark Side, 04/05/29, Science News, Culling clues from X rays emitted by distant clusters of galaxies, astronomers report new evidence that some mysterious force overcame gravity's tug about 6 billion years ago and ever since has been pushing galaxies apart at an accelerating rate.
- Crawling Through Time: Fish Bones Reveal Past Climate Change, 04/05/29, Science News, The timing of ancient migrations of snakehead fish from the Indian subcontinent into Europe, Asia, and Africa tells scientists about temperature and humidity changes in those locations.
- Folate Enrichment Pays Baby Dividends, 04/05/29, Science News, The federally mandated fortification of grain-based foods with folic acid has led to a 25 percent drop in the rate of potentially life-threatening neural tube birth defects.
- Live! Venus' Transit On The Web, 04/05/29, Science News, On June 8, astronomers in Europe plan to Webcast observations of the transit of Venus, the first time the planet has passed across the face of the sun as seen from Earth in 122 years.
- Strange Brew Brings Inorganic Chemicals To Life, 04/05/29, Science News, A mixture of inorganic chemicals spontaneously forms cell-like structures that behave like tiny chemical reactors.
- Cutting Blood Supply To Kill Off Fat, 04/05/29, Science News, Killing the blood vessels that sustain fat tissue causes obese mice to lose weight.
- Scant Evidence Cited in Long Detention of Iraqis, Douglas Jehl, Kate Zernike, 04/05/30, NYTimes
- It Was the Porn That Made Them Do It, Frank Rich, 04/05/30, NYTimes
- Parents Key to Child's Success in School , 04/05/31, NPR, ME, The extent to which parents are involved in their child's school is considered the most important predictor of the child's educational success. But some parents need a little enticement. NPR's Claudio Sanchez reports.
- The Globalization Of Liberalization: Policy Diffusion In The International Political Economy, B. A. Simmons - bsimmonslatte.harvard.edu, Z. Elkins, 2004, American Political Science Review, DOI: 10.1017/S0003055404001078
- Modelling Adoption Of Natural Resources Management Technologies: The Case Of Fallow Systems, A. N. Honlonkou - hmeintofirstnet.bj, 2004, Environment and Development Economics, DOI: 10.1017/S1355770X03001128
- Epidemiology Through Cellular Automata, Situngkir, Hokky, 2004-03-17, Cogprints
- Asynchronous Game of Life, Jia Lee, Susumu Adachi, Ferdinand Peper, Kenichi Morita, 2004-05-18, Physica D, Article in Press, Corrected Proof, DOI: 10.1016/j.physd.2004.03.007
- Effects of Neighbourhood Size and Connectivity on Spatial Continuous Prisoner's Dilemma, Margarita Ifti, Timothy Killingback, Michael Doebeli, 2004-05-24, arXiv, DOI: q-bio.PE/0405018
- Study of Pakistan Election System as Intelligent e-Election, Muhammad Nadeem, Javaid R. Laghari, 2004-05-28, arXiv, DOI: cs.CY/0405105
- Natural Computation and Non-Turing Models of Computation, B.J.Bruce J. MacLennan, 2004-06-04, Theoretical Computer Science 317(1-3):115-145, DOI: 10.1016/j.tcs.2003.12.008
- Book Review: Smart Mobs. The Next Social Revolution, Brian J. L. Berry, 2004-07, Technological Forecasting and Social Change 71(6):651-652, DOI: 10.1016/j.techfore.2004.02.002
- Avian Psychology And Communication, C. Rowe, J. Skelhorn, 2004/05/24, Alphagalileo & Proceedings Biological Sciences
- Pretending To Be A Bird, S. Komarov - textmasterinformnauka.ru, 2004/05/24, Alphagalileo & Blackwell Publishing Ltd
- Prevalent Mental Health Problems Three Years After NATO Bombing Of Serbia, G. Bradley - pressbiomedcentral.com, 2004/05/27, Alphagalileo & BioMed Central
- Could Mice Hold The Secret To Longer Life?, K. Stinchcombe - kate.stinchcombeoxon.blackwellpublishing.com, 2004/05/28, Alphagalileo & Blackwell Publishing Ltd
- Raw Ingredients For Life Detected In Planetary Construction Zones, 2004/05/28, ScienceDaily & NASA/Jet Propulsion Laboratory
- Developing Tools For Reliable 'Gene Chip' Measurements, 2004/05/28, ScienceDaily & National Institute Of Standards And Technology
- Incorporating Ideas From Computer-Supported Cooperative Work, W. Pratt - wprattu.washington.edu, M. C. Reddy, D. W. McDonald, P. T.-Hornoch, J. H. Gennari, Apr. 2004, online 2004/04/20, Journal of Biomedical Informatics, DOI: 10.1016/j.jbi.2004.04.001
- Phase Relationships Between Sleep-Wake Cycle And Underlying Circadian Rhythms In Morningness-Eveningness, Mongrain V., Lavoie S., Selmaoui B., Paquet J., Dumont M. - m-dumontcrhsc.umontreal.ca, Jun. 2004, Journal of Biological Rhythms, DOI: 10.1177/0748730404264365
- Exploring Smoothness And Discontinuities In Human Motor Behaviour With Fourier Analysis, C. M. Harris, Mar.-Apr. 2004, Mathematical Biosciences, DOI: 10.1016/j.mbs.2003.08.011
Evolutionary Epistemology, Language, and Culture, Brussels, Belgium, 04/05/26-28
International Conference on Complex Systems 2004, Boston, 04/05/16-21
Life, a Nobel Story, Brussels, Belgium, 04/04/28
Nonlinear Dynamics and Statistical Mechanics Days, Brussels, Belgium, 04/04/26-27
Science Education Forum for Chinese Language Culture, , Panel Discussion, Taipei, Taiwan, 04/05/01
Biologically Inspired Approaches to Advanced Information Technology, , Lausanne,Switzerland, 04/01/29-30
Nonlinear Dynamics And Chaos: Lab Demonstrations, Strogatz, Steven H., Internet-First University Press, 1994
- World Economic Forum 2004, Davos, Switzerland
- Riding the Next Democratic Wave, Al-Thani, Khan, Vike-Freiberga, Wade, Soros, Zakaria, World Economic Forum, 04/01/25
- The Future of Global Interdependence, Kharrazi, Held, Owens, Shourie, Annan, Martin, Schwab, World Economic Forum, 04/01/25
- Why Victory Against Terrorism Demands Shared Values
- CODIS 2004, International Conference On Communications, Devices And Intelligent Systems, 2004 Calcutta, India, 04/01/09-10
- EVOLVABILITY & INTERACTION: Evolutionary Substrates of Communication, Signaling, and Perception in the Dynamics of Social Complexity, London, UK, 03/10/08-10
- The Semantic Web and Language Technology - Its Po tential and Practicalities, Bucharest, Romania, 03/07/28-08/08
- ECAL 2003, 7th European Conference on Artificial Life, Dortmund, Germany, 03/09/14-17
- New Santa Fe Institute President About His Vision for SFI's Future Role, (Video, Santa Fe, NM, 03/06/04)
- SPIE's 1st Intl Symp on Fluctuations and Noise, Santa Fe, NM, 2003/06/01-04
- NAS Sackler Colloquium on Mapping Knowledge Domains, Video/Audio Report, 03/05/11
- 13th Ann Intl Conf, Soc f Chaos Theory in Psych & Life Sciences, Boston, MA, USA, 2003/08/08-10
- CERN Webcast Service, Streamed videos of Archived Lectures and Live Events
- Dean LeBaron's Archive of Daily Video Commentary, Ongoing Since February 1998
- Edge Videos
Conference & Call for Papers Announcements
Experimental Chaos Conference, Florence, Italy,
- An Intl Tribute to Francisco Varela, Paris,04/06/18-20
Intl Conf on Linking Systems Thinking, Innovation,Quality, Entrepreneurship and Environment (STIQE),
MARIBOR, SLOVENIA, 04/06/24-26
Biannual Meeting Society for Research on Biological Rhythms, Whistler, BC, 04/06/24-26
NAACSOS 2004, North American Association for Computational Social and Organizational Science, Pittsburgh PA, 04/06/27-29
Statphys - Kolkata V An International Conference on Complex Networks: Structure, Function and Processes , Kolkata, India, 04/06/27-30
ICAD 2004 10th International Conference on Auditory Display, Sydney, Australia, 04/07/06-09
3rd Intl School Topics in Nonlinear Dynamics Discrete Dynamical Systems and Applications , Urbino (Italy), 04/07/07-09
- `Perspectives on Nonlinear Dynamics 2004 (PNLD-2004), Chen!
nai, India, 04/07/12-15
- From Animals To Animats
8, 8th Intl Conf On The Simulation Of Adaptive Behavior
(SAB'04), Los Angeles, USA, 04/07/13-17
- 14th Annual International Conference The Society for Chaos Theory in Psychology & Life Sciences , Milwaukee, WI, USA, 04/07/15-18
Facing Complexity, Wellington, NZ, 04/07/15-17
Interdisciplinary Colloquium, Security Bytes, Security/Life/Terror
, Lancaster, 04/07/17-19
- Gordon Research Conference on "Oscillations & Dynamic Instabilities In Chemical Systems", Lewiston, ME, 04/07/18-23
Intl Conf Autonomous Agents & Multi-Agent Systems Conference (AAMAS 2004), New York City, 04/07/19-23
Intl Workshop on: Trust in Agent Societies , New York City, 04/07/19-20
World Multi-Conference on Systemics, Cybernetics and
Informatics, Orlando, Florida, USA, 04/07/18-21
The 4 th International Workshop on Meta-Synthesis and Complex Systems
(MCS'2004) , Beijing, 04/07/22-23
Summer Simulation MultiConference (SummerSim'04), San Jose
Hyatt, San Jose, California, 04/07/25-29
- SME 2004 Symposium on Modeling
and Control of Economic Systems , University in Redlands, CA, 04/07/28-31
International Mathematica Symposium (IMS 2004), Banff,
- Fractals and Natural Hazards at
32nd Intl Geological Congress (IGC), Florence, Italy, 04/08/20-28
Intl Conf on Science of Complex Networks: from Biology
to the Internet and WWW (CNET2004), Aveiro
ICCC 2004, IEEE International Conference on Computational Cybernetics, ,
Vienna, Austria, 04/08/30-09/01
2004, 4th International Workshop on Ant Colony
Optimization and Swarm Intelligence, Brussels, Belgium,
An Inquiry into Systems, Emergence, Levels of Reality,
and Forms of Causality, Trento, Italy,
Intl Conf on the Simulation and Synthesis of Living Systems
(ALIFE9), Boston, Massachusetts, 04/09/12-15
- Neuroeconomics 2004, Charleston, SC, 04/09/16-19
- TNew Economic Windows 2004: Complexity Hints for Economic Policy, Salerno, Italy, 04/09/16-18
Verhulst 200 on Chaos, Brussels, BELGIUM, 04/09/16-18
8th Intl Conf on Parallel Problem Solving from Nature
(PPSN VIII), Birmingham, UK, 04/09/18-22
- XVII Brazilian
Symposium on Artificial Intelligence, Sao Luis, Maranhao -
- TEDMED Conference ,
Charleston SC, 04/10/12-15
Technology Conference, Champaign, Illinois,
- 6th Intl Conf on Electronic Commerce
ICEC'2004: Towards A New Services Landscape, Delft, The Netherlands, 04/10/25-27
- Complexity and Philosophy Workshop - 2-Day Conference , Rio de Janeiro, 04/11
- The 7th Asia-Pacific Complex Systems Conference, Queensland, Australia, 04/12/06-10
- 17th Australian Joint Conference on Artificial Intelligence, Queensland, Australia, 04/12/06-10
18th International Conference on Noise and Fluctuations (ICNF 2005), Salamanca, Spain, 05/09/19-23