Mathematics posts
- June 13, 2011
- 11:33 PM
- 1,182 views
Computers and Electrifying Bacteria
by Paige Brown in From The Lab Bench
Computer-based simulations that use an organism's hereditary information are revealing previously unknown but essential life functions of special bacteria that can be modified to help clean our water and produce electricity for our alternative energy needs... Read more »
Mahadevan R, Palsson BØ, & Lovley DR. (2011) In situ to in silico and back: elucidating the physiology and ecology of Geobacter spp. using genome-scale modelling. Nature reviews. Microbiology, 9(1), 39-50. PMID: 21132020
- May 31, 2011
- 05:44 PM
- 925 views
Species-area relationships don't overestimate extinction rates from habitat loss
by Bob O'Hara in Deep Thoughts and Silliness
Today at work we had a journal club about a recent paper in Nature that had caused a bit of a stir. It had suggested that the reason we don't see as many extinctions due to habitat loss as we'd...... Read more »
He, F., & Hubbell, S. (2011) Species–area relationships always overestimate extinction rates from habitat loss. Nature, 473(7347), 368-371. DOI: 10.1038/nature09985
- May 27, 2011
- 08:42 PM
- 1,128 views
1 in 38?
by Lindsay in Autist's Corner
Discussion of a population-based South Korean study of the prevalence of autism... Read more »
Kim, Y., Leventhal, B., Koh, Y., Fombonne, E., Laska, E., Lim, E., Cheon, K., Kim, S., Kim, Y., Lee, H.... (2011) Prevalence of Autism Spectrum Disorders in a Total Population Sample. American Journal of Psychiatry. DOI: 10.1176/appi.ajp.2011.10101532
- May 24, 2011
- 04:34 PM
- 1,020 views
Escaping the poverty trap
by Bob O'Hara in Deep Thoughts and Silliness
(I conned GrrlScientist into posting this on her Guardian blog) Migrant Mother, Nipomo, California (1936) Image: Dorothea Lange (1895-1965) Common domain. As an old fashioned liberal, I want us all to be happy, and for the State to play a...... Read more »
Plucinski, M., Ngonghala, C., & Bonds, M. (2011) Health safety nets can break cycles of poverty and disease: a stochastic ecological model. Journal of The Royal Society Interface. DOI: 10.1098/rsif.2011.0153
- May 16, 2011
- 10:00 AM
- 842 views
Stats and Methods Urban Legend 4: Effect Size vs. Hypothesis Testing
by Richard Landers in NeoAcademic
Yet another article in the null hypothesis significance testing (NHST) and effect size testing (EST) debate. Perhaps we should use both?... Read more »
Cortina, J., & Landis, R. (2010) The Earth is not round (p . Organizational Research Methods, 14(2), 332-349. DOI: 10.1177/1094428110391542
Cohen, J. (1994) The earth is round (p . American Psychologist, 49(12), 997-1003. DOI: 10.1037//0003-066X.49.12.997
- May 3, 2011
- 10:00 AM
- 752 views
Stats and Methods Urban Legend 3: Myths About Meta-Analysis
by Richard Landers in NeoAcademic
In what I can only assume is a special issue of Organizational Research Methods, several researchers discuss common statistical and methodological myths and urban legends (MUL) commonly seen in the organizational sciences (for more introduction, see the first article in the series). Third up: Aguinis et al.[1] write “Debunking Myths and Urban Legends About [...]... Read more »
Aguinis, H., Pierce, C., Bosco, F., Dalton, D., & Dalton, C. (2010) Debunking myths and urban legends about meta-analysis. Organizational Research Methods, 14(2), 306-331. DOI: 10.1177/1094428110375720
- April 27, 2011
- 10:00 AM
- 765 views
Stats and Methods Urban Legend 2: Control Variables Improve Your Study
by Richard Landers in NeoAcademic
The use of control variables to purify statistical analyses is most often an invalid approach to solving the problem of poor methodology and design.... Read more »
Spector, P., & Brannick, M. (2010) Methodological urban legends: The misuse of statistical control variables. Organizational Research Methods, 14(2), 287-305. DOI: 10.1177/1094428110369842
- April 25, 2011
- 10:00 AM
- 1,061 views
Stats and Methods Urban Legend 1: Formative Measurement
by Richard Landers in NeoAcademic
There are two models of the relationships between constructs and measures: reflective and formative. And formative's got some issues.
Some related articles on Neo-Academic:Predicting Dropout Rates for Students Completing Online Surveys
The Lies That Data Tell
GRE: The Personality Test
... Read more »
Edwards, J. (2010) The fallacy of formative measurement. Organizational Research Methods, 14(2), 370-388. DOI: 10.1177/1094428110378369
- April 22, 2011
- 12:00 AM
- 882 views
Inevitability of the Improbable
by Mika McKinnon in GeoMika
A philosophy of science discussion of the reality of low-frequency events (particularly catastrophes) occurring on geologic timescales.... Read more »
Wilson, R., & Crouch, E. (1987) Risk assessment and comparisons: an introduction. Science, 236(4799), 267-270. DOI: 10.1126/science.3563505
- April 20, 2011
- 12:20 PM
- 1,231 views
Calculating minimum energy urban layouts
by James Keirstead in James Keirstead.ca
Designing a new eco-city? Wondering if your master plan is ambitious enough or if you could go further? We have a new paper out describing how mixed-integer linear programming and Monte Carlo analysis can be used to calculate a minimum energy urban layout as a benchmark for evaluating master plans and policy options.... Read more »
Keirstead, J., & Shah, N. (2011) Calculating minimum energy urban layouts with mathematical programming and Monte Carlo analysis techniques. Computers, Environment and Urban Systems. DOI: 10.1016/j.compenvurbsys.2010.12.005
- April 4, 2011
- 04:10 PM
- 883 views
It’s Not The Coach’s Fault
by Brian Mossop in The Decision Tree
My latest story for Wired Playbook discusses recent research from a group that analyzed 46 seasons of professional German soccer league data to determine that firing a coach mid-season — a tactic clubhouses use to jump-start a fledgling team — has absolutely no effect on the squad’s performance.... Read more »
Heuer, A., Müller, C., Rubner, O., Hagemann, N., & Strauss, B. (2011) Usefulness of Dismissing and Changing the Coach in Professional Soccer. PLoS ONE, 6(3). DOI: 10.1371/journal.pone.0017664
- March 22, 2011
- 11:18 AM
- 1,158 views
One Nanostep for Technology, One Quantum Leap for Psychiatry
by Neurobonkers in Neurobonkers
do_sud_thumb("http://neurobonkers.com/wp-content/uploads/2011/03/computer-doctor.jpg","One Nanostep for Technology, One... Read more »
Khodayari-Rostamabad A, Reilly JP, Hasey G, Debruin H, & Maccrimmon D. (2010) Diagnosis of psychiatric disorders using EEG data and employing a statistical decision model. Conference proceedings : .. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 4006-9. PMID: 21097280
Khodayari-Rostamabad, A., Hasey, G., MacCrimmon, D., Reilly, J., & Bruin, H. (2010) A pilot study to determine whether machine learning methodologies using pre-treatment electroencephalography can predict the symptomatic response to clozapine therapy. Clinical Neurophysiology, 121(12), 1998-2006. DOI: 10.1016/j.clinph.2010.05.009
Charles DeBattista, Gustavo Kinrys, Daniel Hoffman, Corey Goldstein, John Zajecka, James Kocsis, Martin Teicher, Steven Potkin, Adrian Preda, Gurmeet Multani, Len Brandt, Mark Schiller, Dan Iosifescu, Maurizio Fava. (2011) The use of referenced-EEG (rEEG) in assisting medication selection for the treatment of depression . Psychiatric Research, 15(12), 64-75. DOI: The use of referenced-EEG (rEEG) in assisting medication selection for the treatment of depression
- March 21, 2011
- 06:48 AM
- 1,115 views
Sidney Coleman’s QFT lectures
by Marco Frasca in The Gauge Connection
This post is just to point out to my readers that the lectures of Sidney Coleman on QFT are now available in TeX and pdf format. I have taken this information from Lubos’ site. The link for the full pdf is this. For this excellent work the person to be grateful is Bryan Chen a [...]... Read more »
Coleman, S. (1977) There are no classical glueballs. Communications in Mathematical Physics, 55(2), 113-116. DOI: 10.1007/BF01626513
Marco Frasca. (2009) Exact solutions of classical scalar field equations. arxiv. arXiv: 0907.4053v2
- March 21, 2011
- 12:09 AM
- 1,281 views
Darwin Eats Cake: Lyapunov Exponent
by Jon Wilkins in Lost in Transcription
So, you may or may not know that The Hives also said this.
URL for hotlinking or embedding: http://www.darwineatscake.com/img/comic/10.jpg
For more, go to Darwin Eats Cake.
PARKS, P. (1992). A. M. Lyapunov's stability theory—100 years on. IMA Journal of Mathematical Control and Information, 9 (4), 275-303 DOI: 10.1093/imamci/9.4.275
... Read more »
PARKS, P. (1992) A. M. Lyapunov's stability theory—100 years on. IMA Journal of Mathematical Control and Information, 9(4), 275-303. DOI: 10.1093/imamci/9.4.275
- March 18, 2011
- 02:00 AM
- 774 views
Green’s functions
by Christine Corbett Moran in Cosmic Rays
Some of the most important equations in physics can be solved by constructing a beast with a curious set of properties, called a Green’s function. This post contains some interesting nuggets from a lecture I gave on St. Patrick’s day about Green’s functions to the course I assist, Mathematical Methods in the Physical Sciences II. I’ll give some historical background about the life of George Green, the functions’ namesake, introduce what a Green’s function actually is–and what exact........ Read more »
George Green. (1841) An Essay on the Application of mathematical Analysis to the theories of Electricity and Magnetism. Crelle's Journal. arXiv: 0807.0088v1
- March 16, 2011
- 07:02 AM
- 1,069 views
So how are your math skills?
by Doug Keene in The Jury Room
Math is often seen as a necessary evil. But math literacy plays a part in virtually all civil trials, and you need to understand how to manage that effect. You’ll want to prepare. We’re here for you. Even when you don’t know you’re not really that good at math. Litigation involves numbers. Sometimes the numbers [...]
Related posts:Trial Skills Journal on the Web: The Jury Expert
A picture is worth a thousand words…
Outsmarting your biases & helping jurors outsmart theirs too
... Read more »
Pandelaere, M., Briers, B., & Lembregts, C. (2011) How to make a 29% increase look bigger: The unit effect in option comparisons. . Journal of Consumer Research. info:/
- March 11, 2011
- 06:30 PM
- 882 views
Are Species Abundance Distributions Biologically Meaningful?
by Michael Long in Phased
A common ecological assumption is fundamentally challenged.... Read more »
Warren II, R. J., Skelly, D. K., Schmitz, O. J., & Bradford, M. A. (2011) Universal Ecological Patterns in College Basketball Communities. PLoS ONE, 6(3). DOI: 10.1371/journal.pone.0017342
- March 10, 2011
- 05:01 PM
- 1,315 views
Defending Your Territory: Be Smelly, Be Fast
by Jason Goldman in The Thoughtful Animal
Welcome to the third installment of Animal Territoriality Week. See part 1 here, and part 2 here.
In 1994, a disease called sarcoptic mange swept through Bristol's fox population, severely crippling the population and killing most of the individuals. Professor Stephen Harris of the University of Bristol, who had been studying the movements and territories of those foxes, noticed that as the animals in one territory died, neighboring foxes were able to colonize the vacant areas in 3-4 days. He........ Read more »
Luca Giuggioli, Jonathan R. Potts, & Stephen Harris. (2011) Animal Interactions and the Emergence of Territoriality. PLoS Computational Biology, 7(3). info:/10.1371/ journal.pcbi.1002008
- March 10, 2011
- 10:16 AM
- 1,373 views
Math is not for girls: The stereotype begins early!
by Nestor Lopez-Duran PhD in Child-Psych
Imagine yourself an elementary school teacher. One of your female students fails to complete an arithmetic assignment and offers an excuse that ‘‘Girls don’t do math.’’ What might be a pretext for avoiding homework could also be the outcome of social-cognitive development. Combining cultural stereotypes (‘‘Math is for boys’’) with the knowledge about one’s own gender identity [...]
... Read more »
Dario Cvencek, Andrew N. Meltzoff, & Anthony G. Greenwald. (2011) Math–Gender Stereotypes in Elementary School Children. Child Development. info:/
- March 1, 2011
- 01:58 PM
- 1,539 views
How Long Do Stem Cells Live?
by Sanford- Burnham in Beaker
Have you or a family member donated bone marrow or received a transplant? We’d love to hear what this type of research means to you. Please drop us a line in the comments below.
When patients receive a bone marrow transplant, they are getting a new population of hematopoietic stem cells. Fresh stem cells are needed [...]... Read more »
Sieburg HB, Rezner BD, & Muller-Sieburg CE. (2011) Predicting clonal self-renewal and extinction of hematopoietic stem cells. Proceedings of the National Academy of Sciences. info:/10.1073/pnas.1011414108
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