Post List

  • November 12, 2010
  • 02:45 PM

Model Identification and Computer Algebra

by Christopher Winship in SMR Blog

Kenneth A. Bollen and Shawn Bauldry, Model Identification and Computer Algebra, Sociological Methods & Research 2010 39: 127-156. Multiequation models that contain observed or latent variables are common in the social sciences. To determine whether unique parameter values exist for such models, one needs to assess model identification. In practice, analysts rely on empirical checks that [...]... Read more »

Bollen, K., & Bauldry, S. (2010) Model Identification and Computer Algebra. Sociological Methods , 39(2), 127-156. DOI: 10.1177/0049124110366238  

  • November 12, 2010
  • 01:47 PM

Pass the Twigs, Please – Toothwear Indicates the Variety of Chalicothere Diets

by Laelaps in Laelaps

Chalicotheres were just plain weird. With horse-like heads, but bodies which appeared to be equal parts gorilla and giant ground sloth, these herbivorous mammals have stymied paleontologists for well over a century. Did they dig for roots and tubers with their massive claws, or did they use their long arms to bring leafy tree branches [...]... Read more »

  • November 12, 2010
  • 01:46 PM

Personal Genetics & Utility: Round 2 – Mind the EGAPP

by Keith Grimaldi in Eurogene

Personal genetics and disease risk prediction should not be compared to the use of traditional risk factors... Read more »

Evaluation of Genomic Applications in Practice and Prevention (EGAPP) Working Group. (2010) Recommendations from the EGAPP Working Group: Genomic profiling to assess cardiovascular risk to improve cardiovascular health. Genetics in medicine : official journal of the American College of Medical Genetics. PMID: 21042222  

  • November 12, 2010
  • 01:00 PM

Weight loss and macrophages

by Kevin Bonham in Food Matters

Macrophages are really good at gobbling stuff up. It's all right there in the name - they are big (macro) eaters (phage). I study them in the context of the immune system - one of the things they do really well is eat up bacteria and other pathogens that have found their way into your tissues. As a front line sentinel, they also are capable of kick-starting inflammation and recruiting the rest of the cells necessary to clear an infection. But that's not all, there's more.

Weight loss and lipoly........ Read more »

Kosteli A, Sugaru E, Haemmerle G, Martin JF, Lei J, Zechner R, & Ferrante AW Jr. (2010) Weight loss and lipolysis promote a dynamic immune response in murine adipose tissue. The Journal of clinical investigation, 120(10), 3466-79. PMID: 20877011  

  • November 12, 2010
  • 12:51 PM

Relativity on a Human Scale: "Optical Clocks and Relativity"

by Chad Orzel in Uncertain Principles

As mentioned in yesterday's post on ion trapping, a month or so back Dave Wineland's group at NIST published a paper in Science on using ultra-precise atomic clocks to measure relativistic effects. If you don't have a subscription to Science, you can get the paper for free from the Time and Frequency Division database, because you can't copyright work done for the US government.

This paper generated quite a bit of interest when it came out, because it demonstrates the time-slowing effects of re........ Read more »

Chou, C., Hume, D., Rosenband, T., & Wineland, D. (2010) Optical Clocks and Relativity. Science, 329(5999), 1630-1633. DOI: 10.1126/science.1192720  

Schmidt, P. (2005) Spectroscopy Using Quantum Logic. Science, 309(5735), 749-752. DOI: 10.1126/science.1114375  

  • November 12, 2010
  • 12:24 PM

Dramatic study shows participants are affected by psychological phenomena from the future

by BPS Research Digest in BPS Research Digest

Perhaps there's something in the drinking water at Cornell University. A new study involving hundreds of Cornell undergrads has provided a dramatic demonstration of numerous 'retroactive' psi effects - that is, phenomena that are inexplicable according to current scientific knowledge (pdf).

Rather than having the students read each others' minds or wear sliced ping-pong balls over their eyes, Daryl Bem has taken the unusual, yet elegantly simple, approach of testing a raft of classic psychologi........ Read more »

Daryl Bem. (2010) Feeling the future: Experimental evidence for anomalous retroactive influences on cognition and affect. Journal of Personality and Social Psychology. info:/

  • November 12, 2010
  • 12:22 PM

Seeing the Beat

by Sarah in Curious!

What makes you “feel” a beat? Music, most likely; or any sound that occurs at regular intervals. Of course, one can also infer a beat from seeing a flashing light, or feeling the pulse in one’s wrist. Perhaps a beat could even be perceived in finely regulated pulses of flavor or scent… But numerous studies have shown that most people are best at perceiving a beat when they can hear it.
What's less understood is how perception of a beat through one medium affects its subsequent percepti........ Read more »

  • November 12, 2010
  • 11:56 AM

Does it matter which kind of cannabis you smoke?

by mtaffe in TLneuro

A finding that cannabidiol content of smoked cannabis protects against memory impairment.... Read more »

  • November 12, 2010
  • 11:00 AM

How does an anthropological perspective contribute to our understanding of birth control? Part II

by Kate Clancy in Context & Variation

I polled my Twitter followers recently to find out what they wanted me to cover, and heard back a resounding "CONTRACEPTIVES!" So first I am going to re-post a series I wrote on my lab blog in July of 2009, with significant editing and updating. I think after these reposts I'll have a better idea of where it would make sense for me to contribute more, if at all. This is post two of five. Part one can be found here.What is a normal menstrual cycle? Are you normal? Am I? Women spend a lot of time ........ Read more »

Eaton SB, Pike MC, Short RV, Lee NC, Trussell J, Hatcher RA, Wood JW, Worthman CM, Blurton-Jones NG, Konner MJ.... (1994) Women's reproductive cancers in evolutionary context. Quarterley Review of Biology, 69(3), 353-367.

Eaton, S.B., Strassmann, B.I., Nesse, R.M., Neel, J.V., Ewald, P.W., Williams, G.C., Weder, A.B., Eaton III, S.B., Lindeberg, S., Konner, M.J.... (2002) Evolutionary health promotion. Preventive Medicine, 109-118.

  • November 12, 2010
  • 10:32 AM

Does Music Improve Recall of Text?

by Psychology 379 bloggers in Cognition & the Arts

Have you ever wondered if children’s songs that supposedly help them learn certain concepts are actually beneficial? There are many examples of this, including the ABC’s song and the song with all the states in alphabetical order, along with many others. Are these just for fun, or do they serve a beneficial purpose in making it easier for children to learn these concepts?... Read more »

Wallace, W. (1994) Memory for music: Effect of melody on recall of text. Journal of Experimental Psychology: Learning, Memory, and Cognition, 20(6), 1471-1485. DOI: 10.1037//0278-7393.20.6.1471  

  • November 12, 2010
  • 10:30 AM

Keeping ‘em alive

by PalMD in White Coat Underground

As I prepare to emerge from my self-imposed hiatus, I’ve decided to share some classic posts.  Thanks for reading.  –PalMD One of the frequent complaints I hear about real medicine is that it is dangerous. Of course, it’s true—so is riding in a train, but it sure beats walking. And that’s the danger of this [...]... Read more »

Peter Pronovost, M.D., Ph.D., Dale Needham, M.D., Ph.D., Sean Berenholtz, M.D., David Sinopoli, M.P.H., M.B.A., Haitao Chu, M.D., Ph.D., Sara Cosgrove, M.D., Bryan Sexton, Ph.D., Robert Hyzy, M.D., Robert Welsh, M.D., Gary Roth, M.D., Joseph Bander, M.D. (2006) An Intervention to Decrease Catheter-Related Bloodstream Infections in the ICU. New England Journal of Medicine, 355(26), 2725-2732.

  • November 12, 2010
  • 10:30 AM

Mediterranean Diet Prevents Middle-Age Weight Gain? Yeah, Right…

by Steve Parker, M.D. in Advanced Mediterranean Diet

Several mainstream media sources recently touted the Mediterranean diet as an effective method for prevention of the expected middle-age weight gain.  Reuters is one source, for example.  Men on the Mediterranean diet gained 2 lb (about a kilogram) less than other men over six years.  Mediterranean-dieting women gained weight too, but a whole 0.77 lb (0.35 [...]... Read more »

  • November 12, 2010
  • 10:26 AM

Stegosaurs Walked Like Sauropods

by Brian Switek in Dinosaur Tracking

Paleontologists certainly have their hands full finding and describing new dinosaurs, but there is still much to learn about the already familiar species. The configuration of different parts of dinosaur anatomy, for one thing, is an area of research in which scientists are constantly re-examining how ancient bones would have been arranged in life. Now [...]... Read more »

  • November 12, 2010
  • 10:20 AM

Some parasites decide working with their host is more their style

by Prof-like Substance in The Spandrel Shop

Apicomplexans. The term probably means little to you unless you have ever faced the prospect of contracting Malaria. Even still, it is unlikely that you are aware that Plasmodium falciparum, the causative agent of Malaria, is a member of a large group of parasites, classified as the apicomplexans. Other members include Toxoplasma gondii (Toxoplasmosis), Cryptosporidium [...]... Read more »

Saffo MB, McCoy AM, Rieken C, & Slamovits CH. (2010) Nephromyces, a beneficial apicomplexan symbiont in marine animals. Proceedings of the National Academy of Sciences of the United States of America, 107(37), 16190-5. PMID: 20736348  

  • November 12, 2010
  • 09:24 AM

The RAD-57 Pulse Co-Oximeter – Does It Work – Part I

by Rogue Medic in Rogue Medic

The RAD-57 "zero" readings are in the Pet Rock Area. I could run some wires and a fancy probe to a Pet Rock. I would obtain the same result as the RAD-57 for all of these patients. The laboratory readings indicate that they had readings of up to 35.2. ... Read more »

  • November 12, 2010
  • 08:10 AM

Simple Jury Persuasion: If they say ‘No’, ask ‘why not’?

by Rita Handrich in The Jury Room

PsyBlog continues their exploration of research on persuasion techniques and we will continue to monitor their posts and translate those relevant to the realm of litigation advocacy. [Their first post was on how "light" swearing makes you more persuasive. We figured you knew better than to try that one in court!] This time, they explore [...]

Related posts:Simple Jury Persuasion: Channeling Cialdini & becoming a master of social influence
Simple Jury Persuasion: The Alpha Strategies
Simpl........ Read more »

  • November 12, 2010
  • 08:00 AM

Will Regulators Stop the Development of Anti-Obesity Drugs?

by Arya M. Sharma in Dr. Sharma's Obesity Notes

Regular readers may recall that I was recently called upon to present at an advisory meeting of the US Food and Drug Administration (FDA) on whether or not the obesity drug sibutramine should remain on the US market.
Readers may also recall that the vote resulted in a tie that did not stop the FDA from [...]... Read more »

Dvorak RV, Sharma AM, & Astrup A. (2010) Anti-obesity drugs: to be or not to be?. Obesity reviews : an official journal of the International Association for the Study of Obesity. PMID: 21054758  

  • November 12, 2010
  • 07:00 AM

Faith or Fiction?

by Shaheen Lakhan in Brain Blogger

Arguably, one of the greatest scenes in all of movie history is the parting of the Red Sea by Moses played by Charlton Heston in the blockbuster epic The Ten Commandments. (The awe inspired by the portrayal of the miracle during the Israelites’s exodus from Egypt is matched only by the awe that movie special [...]... Read more »

  • November 12, 2010
  • 06:37 AM

Risk from the Managers Perspective (Part 2)

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management

Today I will write about the implications of the risk understanding by managers covered in Part 1 of this series. Continue reading "Risk from the Managers Perspective (Part 2)"
... Read more »

March, J., & Shapira, Z. (1987) Managerial Perspectives on Risk and Risk Taking. Management Science, 33(11), 1404-1418. DOI: 10.1287/mnsc.33.11.1404  

  • November 12, 2010
  • 05:14 AM

Competing interests at medical journals: industry sponsored trials boost impact factors

by Helen Jaques in In Sickness and In Health

These days medical journals are rigorous when it comes to getting researchers to declare any associations with industry that might influence how a trial is reported. Before agreeing to publish a paper, many of the top medical journals require authors to sign a comprehensive conflicts of interest form that outlines any financial or personal relationships [...]... Read more »

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