by Artem Kaznatcheev in Evolutionary Games Group
As an evolutionary game theorist working on cooperation, I sometimes feel like a minimalist engineer. I spend my time thinking about ways to design the simplest mechanisms possible to promote cooperation. One such mechanism that I accidentally noticed (see bottom left graph of results from summer 2009) is the importance of free space, or — [...]... Read more »
Hauert, C., Holmes, M., & Doebeli, M. (2006) Evolutionary games and population dynamics: maintenance of cooperation in public goods games. Proceedings of the Royal Society B: Biological Sciences, 273(1600), 2565-2571. DOI: 10.1098/rspb.2006.3600
A tamarin rock star (photographed by Ltshears at Wikimedia)Our moods change when we hear music, but not all music affects us the same way. Slow, soft, higher-pitched, melodic songs soothe us; upbeat classical music makes us more alert and active; and fast, harsh, lower-pitched, dissonant music can rev us up and stress us out. Why would certain sounds affect us in specific emotional ways? One possibility is because of an overlap between how we perceive music and how we perceive human voic........ Read more »
Snowdon, C., & Teie, D. (2009) Affective responses in tamarins elicited by species-specific music. Biology Letters, 6(1), 30-32. DOI: 10.1098/rsbl.2009.0593
So, recently (last week, maybe?), Randall Munroe, of xkcd fame, posted an answer to the question "How many unique English tweets are possible?" as part of his excellent "What If" series. He starts off by noting that there are 27 letters (including spaces), and a tweet length of 140 characters. This gives you 27140 -- or about 10200 -- possible strings.
Of course, most of these are not sensible English statements, and he goes on to estimate how many of these there are. This analysis is base........ Read more »
C. E. Shannon. (1951) Prediction and Entropy of Written English. Bell System Technical Journal, 50-64. info:/
The third (and final, at the moment) paper in the likelihood calculus series from Dr. Terrence Sanger is Distributed control of uncertain systems using superpositions of linear operators. Carrying the torch for the series right along, here Dr. Sanger continues investigating the development of an effective, general method of controlling systems operating under uncertainty. This is the paper that delivers on all the promises of building a controller out of a system described by the stochastic diff........ Read more »
Sanger, T. (2011) Distributed Control of Uncertain Systems Using Superpositions of Linear Operators. Neural Computation, 23(8), 1911-1934. DOI: 10.1162/NECO_a_00151
Using evidence or data to communicate risk to the American public can be a fool’s errand. The most publicized “la, la, la, I can’t hear you!” moments involve people ignoring dangers that threaten ideology or political beliefs. Others may choose to ignore risks because immediate short-term pleasures are too alluring. [...]... Read more »
Bilgin, B., & Brenner, L. (2013) Context affects the interpretation of low but not high numerical probabilities: A hypothesis testing account of subjective probability. Organizational Behavior and Human Decision Processes, 121(1), 118-128. DOI: 10.1016/j.obhdp.2013.01.004
Simone CB 2nd, Hampshire MK, Vachani C, & Metz JM. (2012) The utilization of oncology web-based resources in Spanish-speaking Internet users. American journal of clinical oncology, 35(6), 520-6. PMID: 21654312
I am still working with stochastic processes and, as my readers know, I have proposed a new view of quantum mechanics assuming that at the square root of a Wiener process can be attached a meaning (see here and here). I was able to generate it through a numerical code. A square root of a [...]... Read more »
Marco Frasca. (2012) Quantum mechanics is the square root of a stochastic process. arXiv. arXiv: 1201.5091v2
Keith Chen has found a link between people's economic decisions and whether their language has a future tense. But are there other linguistic variables that are even better at predicting economic decisions?... Read more »
Chen, M. (2011) The Effect of Language on Economic Behavior: Evidence from Savings Rates, Health Behaviors, and Retirement Assets. SSRN Electronic Journal. DOI: 10.2139/ssrn.1914379
Sean Roberts, & James Winters. (2012) Social Structure and Language Structure: the New Nomothetic Approach. Psycology of Language Learning, 16(2), 89-112. info:/10.2478/v10057-012-0008-6
The second paper put out by Dr. Terence Sanger in the likelihood calculus paper series is Neuro-mechanical control using differential stochastic operators. Building on the probabalistic representation of systems through differential stochastic operators presented in the last paper (Controlling variability, which I review here) Dr. Sanger starts exploring how one could effect control over a system whose dynamics are described in terms of these operators. Here, he specifically looks at driving a p........ Read more »
Sanger TD. (2010) Neuro-mechanical control using differential stochastic operators. Conference proceedings : .. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 4494-7. PMID: 21095779
Pea aphids are even better at "stop, drop and roll" than elementary-schoolers. When a threatening ladybug or grazing deer approaches the stem where an aphid is sucking sap, it lets go and plummets toward the ground. By holding its limbs in just the right way, though, the insect can tumble into an upright position before sticking the landing.
The ground is a dangerous place for a small wingless animal, so it might help a falling pea aphid (Acyrthosiphon pisum) to hit it running. Or, bet........ Read more »
Ribak, G., Gish, M., Weihs, D., & Inbar, M. (2013) Adaptive aerial righting during the escape dropping of wingless pea aphids. Current Biology, 23(3). DOI: 10.1016/j.cub.2012.12.010
Warm years limit flu transmission, but that makes us more susceptible to the virus the following season, explains Sherry Towers at Arizona State University, meaning health authorities have to watch for severe epidemics as climate changes. ... Read more »
Towers, S., Chowell, G., Hameed, R., Jastrebski, M., Khan, M., Meeks, J., Mubayi, A., & Harris, G. (2013) Climate change and influenza: the likelihood of early and severe influenza seasons following warmer than average winters. PLoS Currents. DOI: 10.1371/currents.flu.3679b56a3a5313dc7c043fb944c6f138
Science is at a turning point. Decisions has been normally emerged from traditional scientific praxis and a general consent, without a real discussion on it. This worked so far, but nowadays we are facing huge paradigm shifts.
Scientific Blogs and social networking are well spread in the Internet community, and this fact is having a huge impact on the trends of scientific research.
Big Data, ITs and "omic-like" projects are some of the aspects that are speeding our world faster tha........ Read more »
Kobro-Flatmoen, A., Langdon, G., Wright, C., Block, J., Gilarranz, L., Lever, J., Rohr, R., Fortuna, M., Kamfonik, D., Grahl, J.... (2012) NextGenVoices -- Results. Science, 335(6064), 36-38. DOI: 10.1126/science.335.6064.36
Van Noorden, R. (2013) Mathematicians aim to take publishers out of publishing. Nature. DOI: 10.1038/nature.2013.12243
Before I moved to my current position in Maastricht, I had the great pleasure to work with Prof. Roland Grafström (check his pathway bioinformatics done with his then PhD Rebecca) and Prof. Bengt Fadeel at the Karolinska Institutet. During this year I part-time worked on ToxBank and part-time on nano-QSAR, and worked on semantics, predictive toxicology, and Open Data. This blog post is about the ToxBank work.
I promised firework, and the first rockets are heading upw........ Read more »
Kohonen, P., Benfenati, E., Bower, D., Ceder, R., Crump, M., Cross, K., Grafström, R., Healy, L., Helma, C., Jeliazkova, N.... (2013) The ToxBank Data Warehouse: Supporting the Replacement of In Vivo Repeated Dose Systemic Toxicity Testing. Molecular Informatics. DOI: 10.1002/minf.201200114
If you ask most heterosexual people what height they're looking for in a partner, they'll describe basically what a children's-book illustrator would draw: the man taller than the woman but not towering over her. But those of us who aren't pen-and-paper must settle for real human partners in human shapes and sizes. Nevertheless, new research says most people end up with a reality that matches the fantasy.
Researchers led by Gert Stulp of the University of Groningen in the Netherlands wondere........ Read more »
Stulp, G., Buunk, A., Pollet, T., Nettle, D., & Verhulst, S. (2013) Are Human Mating Preferences with Respect to Height Reflected in Actual Pairings?. PLoS ONE, 8(1). DOI: 10.1371/journal.pone.0054186
I’m revisiting some older research of mine, so that I can talk a little bit about some data visualization I did along the way. If you frequent TriZPUG or the SplatSpace, you might have seen my original presentation, but In Case You Missed It… You might remember a while back I got interested in researching [...]... Read more »
Dr. Terry Sanger has a series of papers that have come out in the last few years describing what he has named ‘likelihood calculus’. The goal of these papers is to develop a ‘a theory of optimal control for variable, uncertain, and noisy systems that nevertheless accomplish real-world tasks reliably.’ The idea being that successful performance can be thought of as modulating variance of movement, allocating resources to tightly control motions when required and allowing variability in ta........ Read more »
A look at the new fun approach and interest taken in science and how this is being marketed and aimed at young people. ... Read more »
E Markham. (2013) Sweet Science. Blogspot. info:/
“In theory, theory and practice are the same. In practice, they are not.” There is a relatively famous quote attributed to Michelangelo who was discussing his process of carving a statue: “I saw the angel in the marble and carved … Continue reading →... Read more »
Researchers have found that in learning mathematics, motivation and study skills and habits play more important role than the intelligence.
This research has been published online in the journal Child Development.
"While intelligence as assessed by IQ tests is important in the early stages of developing mathematical competence, motivation and study skills play a more important role in students' subsequent growth," Kou Murayama, postdoctoral researcher of psychology at the ........ Read more »
Murayama, K., Pekrun, R., Lichtenfeld, S., & vom Hofe, R. (2012) Predicting Long-Term Growth in Students' Mathematics Achievement: The Unique Contributions of Motivation and Cognitive Strategies. Child Development. DOI: 10.1111/cdev.12036
So, last week featured a lot of news about a paper that came out in the Quarterly Review of Biology titled "Homsexuality as a Consequence of Epigenetically Canalized Sexual Development." The authors were Bill Rice (UCSB), Urban Friberg (Uppsala U), and Sergey Gavrilets (U Tennessee). The paper got quite a bit of press. Unfortunately, most of that press was of pretty poor quality, badly misrepresenting the actual contents of the paper. (PDF available here.)
I'm going to walk through the paper's ........ Read more »
Rice, W., Friberg, U., & Gavrilets, S. (2012) Homosexuality as a Consequence of Epigenetically Canalized Sexual Development. The Quarterly Review of Biology, 87(4), 343-368. DOI: 10.1086/668167
In 1996 physicist Alan Sokal succeeded in getting a unique article published in the journal Social Text. The article was titled “Transgressing the Boundaries: Towards a Transformative Hermeneutics of Quantum Gravity,” and it was unique because it was complete gibberish. Known as the Sokal Hoax, it was a crowning moment for pretense-haters everywhere. While journal editors have managed [...]... Read more »
Eriksson, Kimmo. (2012) The nonsense math effect. Judgment and Decision Making, 7(6), 746-749. info:/
Do you write about peer-reviewed research in your blog? Use ResearchBlogging.org to make it easy for your readers — and others from around the world — to find your serious posts about academic research.
If you don't have a blog, you can still use our site to learn about fascinating developments in cutting-edge research from around the world.
Research Blogging is powered by SMG Technology.
To learn more, visit seedmediagroup.com.