Post List

  • September 1, 2010
  • 01:03 PM

The thing with graphene transistors

by Joerg Heber in All That Matters

Graphene is one of the hottest research areas in nanotechnology, and it may seem slightly surprising it took me a month to write my first blog post on the topic. That moment has now come, with the advance publication of a Nature paper that presents highly attractive graphene transistor, even though in my humble opinion [...]... Read more »

Liao, L., Lin, Y.-C., Bao, M., Cheng, R., Bai, J., Liu, Y., Qu, Y., Wang, K. L., Huang, Y., & Duan, X. (2010) High-speed graphene transistors with a self-aligned nanowire gate. Nature. DOI: 10.1038/nature09405  

  • September 1, 2010
  • 01:00 PM

The "Bad" Language of Physics

by S.C. Kavassalis in The Language of Bad Physics

One of the things I sometimes find myself writing about is the “bad” language used by physicists. Sometimes we say Riemannian when we really should say psuedo-Riemannian, sometimes we call something a metric when it really is a line element – the kind of nitpicky pet-peeves that practically everyone has about literature in their field. Today, I’m going to be talking about the bad language in physics in a totally different context however.... Read more »

Regge, T. (1961) General relativity without coordinates. Il Nuovo Cimento, 19(3), 558-571. DOI: 10.1007/BF02733251  

Galassi, M. (1993) Lapse and shift in Regge calculus. Physical Review D, 47(8), 3254-3264. DOI: 10.1103/PhysRevD.47.3254  

Kheyfets A, LaFave NJ, & Miller WA. (1990) Null-strut calculus. II. Dynamics. Physical review D: Particles and fields, 41(12), 3637-3651. PMID: 10012308  

ALPER ÜNGÖR, & ALLA SHEFFER. (2002) PITCHING TENTS IN SPACE-TIME: MESH GENERATION FOR DISCONTINUOUS GALERKIN METHOD. International Journal of Foundations of Computer Science , 13(2). info:/10.1142/S0129054102001059

  • September 1, 2010
  • 01:00 PM

What Hurts Fitness More: 30 Years of Aging or 3 Weeks of Bed Rest?

by Travis Saunders, MSc, CEP in Obesity Panacea

I recently came across a very interesting study published in Circulation in 2001. In it, authors Darren McGuire and colleagues perform the 30-year follow-up on a group of 5 men who had taken part in the Dallas Bed Rest and Training Study (DBRTS). The DBRTS took place in 1966, when all 5 men were healthy 20 year-olds. They were assessed extensively at 3 different time points: baseline, following 3 months of bed rest, and following 8 weeks of physical training. In 1996 these same 5 men were as........ Read more »

  • September 1, 2010
  • 12:42 PM


by Journal Watch Online in Journal Watch Online

Nobody’s against cleaner, greener neighborhoods. But some social scientists have worried that cleaning up could end up clearing out the poor residents who often live around polluted sites. Now, a study from Portland, Oregon looks for a link between gentrification and environmental clean-up.
Researchers have long documented the impact of LULUs — “locally undesirable land […] Read More »... Read more »

  • September 1, 2010
  • 11:35 AM

Towards a new political economy of pensions? The implications for women

by SAGE Insight in SAGE Insight

From Critical Social Policy Over recent years there has been concern about the future sustainability of UK pensions mainly linked with the increase in life expectancy of the general population. The government and pensions industry face the difficult challenge of satisfying two potentially contrasting demands: to ensure that government pension spending remains stable and also [...]... Read more »

Liam Foster. (2010) Towards a new political economy of pensions? The implications for women. Critical Social Policy, 30(1), 27-47. info:/10.1177/0261018309350807

  • September 1, 2010
  • 10:17 AM

Phenologs and unlikely models

by Eva Amsen in the Node

“You’re probably wondering why I’m here”, were the first words of Edward Marcotte’s talk at the SDB meeting last month. After all, he was about to speak about systems biology in a session on organogenesis. What followed was not only a new way to identify genes involved in developmental processes, but also a perfect example [...]... Read more »

Kriston L. McGary, Tae Joo Park, John O. Woods, Hye Ji Cha, John B. Wallingford, & Edward M. Marcotte. (2010) Systematic discovery of nonobvious human disease models through orthologous phenotypes. PNAS. DOI: 10.1073/pnas.0910200107  

  • September 1, 2010
  • 10:00 AM

Blogging with CONTEXT: A recommender system for bloggers

by Anatoliy Gruzd in Social Media Lab

As mentioned in the previous post, last week I was attending the Information Interaction in Context Symposium held in New Brunswick, USA.

At the poster session, I and my student Justin Wong (left in the photo) from the University of Toronto, presented our ongoing work on the development and evaluation of a context-aware information retrieval system for blog authors called CONTEXT.... Read more »

Gruzd, A. and Wong, J. (2010) Blogging with CONTEXT: a context-aware information retrieval system for bloggers. In Proceeding of the Third Symposium on information interaction in Context, 289-292. info:/10.1145/1840784.1840827

  • September 1, 2010
  • 09:51 AM

Millipedes and mites do not cospeciate. But do they coevolve?

by Timothée Poisot in Timothée Poisot

Coevolution is a really cool evolutionary process in which a genetically driven change in the phenotype of one species is responsible for a change in the evolutionary pressures on a second species. The term was coined in the 1960s, and the concept (formalized by Janzen in 1980) is receiving an increasing interest ever since. One [...]... Read more »

Janzen, Daniel H. (1980) When is it Coevolution?. Evolution, 34(3). DOI: 10.2307/2408229  

Strauss SY, Sahli H, & Conner JK. (2005) Toward a more trait-centered approach to diffuse (co)evolution. The New phytologist, 165(1), 81-89. PMID: 15720623  

Lynn Swafford, & Jason E Bond. (2010) Failure to cospeciate: an unsorted tale of millipedes and mites. Biological Journal of the Linnean Society. info:/10.1111/j.1095-8312.2010.01499.x

John N Thompson. (2010) Four Central Points About Coevolution. Evolution: Education and Outreach, 57(1). DOI: 10.1007/s12052-009-0200-x  

  • September 1, 2010
  • 09:07 AM

Diversity in the geosciences and the impact of social media

by Chris Rowan in Highly Allochthonous

In the September issue of GSA Today, you can find our article on The Internet as a resource and support network for diverse geoscientists. Where do we go from here? Continue reading →... Read more »

Jefferson, A.J., Hannula, K.A., Campbell, P.B., & Franks, S.E. (2010) The Internet as a resource and support network for diverse geoscientists. GSA Today, 20(9), 59-61. info:/10.1130/GSATG91GW.1

  • September 1, 2010
  • 09:05 AM

New cooperation theory has major Mommy issues

by Jeremy Yoder in Denim and Tweed

The cover article for last week's issue of Nature promised to be the last word in a long-running scientific argument over the evolution of cooperation—but it really just rejiggers the terms of the debate. Instead of solving the problem of how cooperative behavior can evolve, the new paper presents a model of maternal enslavement [$a]. These are not, it turns out, quite the same thing.

Group selection versus kin selection

Let's start with some background. Unselfish, cooperative behavior has l........ Read more »

Axelrod, R., & Hamilton, W. (1981) The evolution of cooperation. Science, 211(4489), 1390-1396. DOI: 10.1126/science.7466396  

Nowak, M., Tarnita, C., & Wilson, E. (2010) The evolution of eusociality. Nature, 466(7310), 1057-62. DOI: 10.1038/nature09205  

  • September 1, 2010
  • 08:37 AM

Dispersants! Part III: Do dispersants really promote degradation of oil?

by Holly Bik in Deep Sea News

Promoting microbial degradation of oil has been one of the main arguments in favor of dispersant use.  Interestingly, the PWSRCAC review (covering literature from 1997-2008) did not identify any recent study that explicitly found dispersant use enhancing the biodegradation of oil.  Actually, ~50% of studies found that chemical additives inhibited microbial degradation and the other half . . . → Read More: Dispersants! Part III: Do dispersants really promote degradation of oil?... Read more »

  • September 1, 2010
  • 08:30 AM

The complex lipidome quantified

by Colby in

There are thousands of lipid species in our bodies that represent 6 categories, but we only usually hear about the subcategories of cholesterol and triglycerides.  We don’t yet understand how they are all altered in response to various nutrients, dietary … Continue reading →... Read more »

Quehenberger O, Armando AM, Brown AH, Milne SB, Myers DS, Merrill AH, Bandyopadhyay S, Jones KN, Kelly S, Shaner RL.... (2010) Lipidomics reveals a remarkable diversity of lipids in human plasma. Journal of lipid research. PMID: 20671299  

  • September 1, 2010
  • 08:22 AM

Inside Nature's Giants, series 2: does Carcharodon bite?

by Darren Naish in Tetrapod Zoology

Earlier this year (in June), Channel 4 television here in the UK broadcast series 2 of Inside Nature's Giants (ING from hereon... titled Raw Anatomy in the US, you poor, poor people). You may have heard it here first. Hopefully you're familiar with ING series 1 - it looked at the anatomy of elephants, baleen whales, crocodiles and giraffes - and, if you're not, be sure to check out the Tet Zoo articles starting here. My praise for series 1 was extreme, by which I mean that I thought it was e........ Read more »

Dickson KA, & Graham JB. (2004) Evolution and consequences of endothermy in fishes. Physiological and biochemical zoology : PBZ, 77(6), 998-1018. PMID: 15674772  

  • September 1, 2010
  • 07:33 AM

the largest whorfian study EVER! (and why it matters)

by Chris in The Lousy Linguist

Let me take the ball Mark Liberman threw on Monday and run with it a bit. Liberman posted a thorough discussion of Fausey and Broditsky's neo-Whorfian English and Spanish speakers remember causal agents differently. Specifically, he invited readers to carefully examine the methodology of the experiments themselves, and not just focus on the conclusions. It turns out that a few years ago another set of neo-Whorfians, Jürgen Bohnemeyer and company, published a paper that addressed similar me........ Read more »

Jürgen Bohnemeyer, Sonja Eisenbeiss, & Bhuvana Narasimhan. (2006) Ways to go: Methodological considerations in Whorfian studies on motion events. ESSEX RESEARCH REPORTS IN LINGUISTICS, 1-19. info:other/

  • September 1, 2010
  • 07:31 AM

Evolving regulation

by Becky in It Takes 30

Earlier this week, I commented in passing about the ubiquity of phosphorylation as a way of regulating protein activity in eukaryotes.  It’s been estimated that somewhere in the region of 1/3 to 1/2 of proteins are — at some time, under some circumstances — phosphorylated on serine, threonine or tyrosine, causing changes in protein behavior that [...]... Read more »

  • September 1, 2010
  • 05:32 AM

Were does Resilience against Depression Reside in the Brain?

by Dr Shock in Dr Shock MD PhD

Resilience is in psychiatry the positive capacity of people to cope with stress and catastrophe. In this post it’s used as having an adaptive system that uses exposure to stress to provide resistance to future negative events.
Stress can lead to depression accompanied by atrophy and loss of neurons in the adult hippocampus in experimental [...]

Related posts:Were is Depression Located in the Brain?
Adolescents brain and Depression
Neurobiology of Psychosocial Stress and Depression
... Read more »

Thomas Frodl,, Angela Carballedo1,, Andrew J. Fagan,, Danusia Lisiecka1,, Yolande Ferguson,, Ian Daly,, James F. Meaney,, & Dermot Kelleher. (2010) Microstructural Correlates of Resilience against Major Depressive Disorder: Epigenetic Mechanisms?. Nature Precedings. info:/

  • September 1, 2010
  • 05:30 AM

A proposed model to help select the best method for oil spill clean ups

by SAGE Insight in SAGE Insight

A model to predict rate of dissolution of toxic compounds into seawater from an oil spill From International Journal of Toxicology As we witness with dismay the media images of the environmental consequences of the current large scale oil spills there is an urgency to find effective ways of dealing with such incidents. Hundreds of [...]... Read more »

  • September 1, 2010
  • 05:17 AM

How Many Unique Papers Are There In Mendeley?

by Duncan Hull in O'Really?

Mendeley is a handy piece of desktop and web software for managing and sharing research papers [1]. This popular tool has been getting a lot of attention lately, and with some impressive statistics it’s not difficult why. At the time of writing Mendeley claims to have over 36 million papers, added by just under half a [...]... Read more »

Victor Henning, & Jan Reichelt. (2008) Mendeley - A For Research?. IEEE Fourth International Conference on eScience, 327-328. DOI: 10.1109/eScience.2008.128  

  • September 1, 2010
  • 05:00 AM

Another Good Reason to Lose the Fat: Stop Urine Leakage

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

 For overweight and obese women, loss of between five and 10% of body weight significantly reduces urine leakage.  According to the research report in last month’s Obstetrics & Gynecology journal, weight loss should be the first approach to urine leakage in overweight and obese women.
The other word for urine leakage is incontinence: an involuntary loss of [...]... Read more »

Wing RR, Creasman JM, West DS, Richter HE, Myers D, Burgio KL, Franklin F, Gorin AA, Vittinghoff E, Macer J.... (2010) Improving urinary incontinence in overweight and obese women through modest weight loss. Obstetrics and gynecology, 116(2 Pt 1), 284-92. PMID: 20664387  

  • September 1, 2010
  • 02:05 AM

Segmenting Supply Chain Strategies

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management

For researchers and practitioners alike it is important to differentiate supply chain strategies.

Not only Fisher (1997) showed, that there is no one-fits-all supply chain. But what are the criteria for should be used for supply chain segmentation?
Fisher focusses on on the product only, and he concludes, that a standard/functional product should be processed by a lean supply chain and innovative products by agile supply chains.
Continue reading "Segmenting Supply Chain Strat........ Read more »

Fischer, Marshall L. (1997) What is the Right Supply Chain for Your Product?. Harvard Business Review, 105-116. info:/

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