Food webs, since introduced by Elton in 1927, have proven to be useful descriptors of ecological communities, and have generated an impressive amount of theory and data (see e.g. the PEaCE Lab or the IWDB). In their simplest expression, food webs are visualized as a matrix with one population (e.g. the preys) as rows and [...]... Read more »
Blüthgen N, Menzel F, & Blüthgen N. (2006) Measuring specialization in species interaction networks. BMC ecology, 9. PMID: 16907983
Ayco J. M. Tack, Sofia Gripenberg, & Tomas Roslin. (2010) Can we predict indirect interactions from quantitative food webs? – an experimental approach. Journal of Animal Ecology. info:/10.1111/j.1365-2656.2010.01744.x
The BBC News Sci/tech section recently ran a few stories about neuroscience and technology that I considered to be a bit oversold. There was one article in particular I wanted to write about: Brain works more like internet than ‘top down’ company. The article refers to a recent study in PNAS that used injections of [...]... Read more »
Thompson, R., & Swanson, L. (2010) Hypothesis-driven structural connectivity analysis supports network over hierarchical model of brain architecture. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.1009112107
Here it is, finally: the post you’ve been waiting for. Having already convinced you that you should care about the possibility of consciousness in cephalopods in Part 1 and having briefly outlined the state of research on consciousness in non-human animals in Part 2, I’ll get right down to it and discuss the possibility of [...]... Read more »
Think back to your college years. Remember those premed courses that you had to take? Biology, chemistry, physics... oh my. How helpful were these in your preparation for medical school and clinical practice? In 1981, the Association of American Medical Colleges assembled a group, the General Professional Education of the Physician and College Preparation for Medicine (GPEP) to relook at these premed requirements. In 1984, the published a report "Physicians for the Twenty-First Century". They ad........ Read more »
Muller D, & Kase N. (2010) Challenging traditional premedical requirements as predictors of success in medical school: the Mount Sinai School of Medicine Humanities and Medicine Program. Academic medicine : journal of the Association of American Medical Colleges, 85(8), 1378-83. PMID: 20671464
This paper describes an infrastructure risk analysis model, considering possible threats and potential impacts. Their model follows the commonly accepted risk assessment method of fault and event trees and provides a systematic process to conduct vulnerability modelling, assessment and management across different infrastructures, allowing for rank-ordering of alternatives and scenario bounding. ... Read more »
Today I start an irregular series on doctoral dissertations on Supply Chain Risk Management. An immense effort and dedication is spent on these works only to find the results hidden in libraries. So the goal is raise interest in their research.
Author / Topic
The first dissertation was written by Ingo Schneider in 2009 as his doctoral thesis at the Helmut Schmidt University in Hamburg, Germany. It was published by Shaker, Aachen and can be ordered here from amazon.de or your local library......... Read more »
Schneider, Ingo. (2009) Die Risikobetrachtung in der Beschaffung als strategische Komponente im Supply-Chain-Design : eine Analyse am Beispiel Karosserieblechteile in der Automobilindustrie. Shaker, Aachen. info:/
A number of studies have shown cardiovascular benefits of eating flavanol rich cocoa. Cocoa is the important substance of chocolate. Especially dark chocolate can contain high levels of flavanols. The possible underlying mechanisms of these cardioprotective properties of chocolate can be several.
The biggest question that remains is about the right dose of dark chocolate. [...]
Related posts:The Right Chocolate Dose?
Chocolate and Pregnancy
Chocolate lowers cardiac mortality after first acut........ Read more »
Mostofsky, E., Levitan, E., Wolk, A., & Mittleman, M. (2010) Chocolate Intake and Incidence of Heart Failure: A Population-Based, Prospective Study of Middle-Aged and Elderly Women. Circulation: Heart Failure. DOI: 10.1161/CIRCHEARTFAILURE.110.944025
Last May, I sketched out an idea for a research project that would look at what senior governments could do to ensure that those who make decisions about the growth of North American cities do a better job of respecting … Continue reading →... Read more »
The long awaited paper that would ‘solve’ the controversies about the presence of Xenotropic Murine Leukemia Virus-related virus (XMRV) in patients with chronic fatigue syndrome (CFS) was finally published in PNAS last week . The study, a joint effort of the NIH and the FDA, was withheld, on request of the authors , because it contradicted [...]... Read more »
Lo SC, Pripuzova N, Li B, Komaroff AL, Hung GC, Wang R, & Alter HJ. (2010) Detection of MLV-related virus gene sequences in blood of patients with chronic fatigue syndrome and healthy blood donors. Proceedings of the National Academy of Sciences of the United States of America. PMID: 20798047
Erlwein, O., Kaye, S., McClure, M., Weber, J., Wills, G., Collier, D., Wessely, S., & Cleare, A. (2010) Failure to Detect the Novel Retrovirus XMRV in Chronic Fatigue Syndrome. PLoS ONE, 5(1). DOI: 10.1371/journal.pone.0008519
Groom, H., Boucherit, V., Makinson, K., Randal, E., Baptista, S., Hagan, S., Gow, J., Mattes, F., Breuer, J., Kerr, J.... (2010) Absence of xenotropic murine leukaemia virus-related virus in UK patients with chronic fatigue syndrome. Retrovirology, 7(1), 10. DOI: 10.1186/1742-4690-7-10
van Kuppeveld, F., Jong, A., Lanke, K., Verhaegh, G., Melchers, W., Swanink, C., Bleijenberg, G., Netea, M., Galama, J., & van der Meer, J. (2010) Prevalence of xenotropic murine leukaemia virus-related virus in patients with chronic fatigue syndrome in the Netherlands: retrospective analysis of samples from an established cohort. BMJ, 340(feb25 1). DOI: 10.1136/bmj.c1018
McClure, M., & Wessely, S. (2010) Chronic fatigue syndrome and human retrovirus XMRV. BMJ, 340(feb25 1). DOI: 10.1136/bmj.c1099
Lombardi VC, Ruscetti FW, Das Gupta J, Pfost MA, Hagen KS, Peterson DL, Ruscetti SK, Bagni RK, Petrow-Sadowski C, Gold B.... (2009) Detection of an infectious retrovirus, XMRV, in blood cells of patients with chronic fatigue syndrome. Science (New York, N.Y.), 326(5952), 585-9. PMID: 19815723
Enserink M. (2010) Chronic fatigue syndrome. New XMRV paper looks good, skeptics admit--yet doubts linger. Science (New York, N.Y.), 329(5995), 1000. PMID: 20798285
[Wherein our hero ponders the implications of speeding and slowing the passage of time for personal gain at the expense of others... while Physicists are busy not-doing-it, Psychologists have got the subjective element down.] We talk about some abstract concepts in my stats class. My first exposure to a three-way interaction in a factorial design [...]... Read more »
Rhodes, M., & McCabe, D. (2009) Expertise makes the world slow down: Judgements of duration are influenced by domain knowledge. The Quarterly Journal of Experimental Psychology, 62(12), 2313-2319. DOI: 10.1080/17470210903128536
Sackett AM, Meyvis T, Nelson LD, Converse BA, & Sackett AL. (2010) You're having fun when time flies: the hedonic consequences of subjective time progression. Psychological science : a journal of the American Psychological Society / APS, 21(1), 111-7. PMID: 20424031
Luigi Preziosi (Politecnico di Torino, Italy) and coworkers have developed a mathematical model for the mechanical stress experienced by cell aggregates, relevant to cellular function in normal health (blood flow) and disease (cancer). This news feature was written on August 29, 2010.... Read more »
Sometimes, even with the best practice, treatment doesn’t go the way you expect it to. Graded exposure, using a phobia treatment model, can be one of those amazingly quick methods – or it can be a long-haul challenge. This paper by Flink, Boersma and Linton, just published in European Journal of Pain identifies one of … Read more... Read more »
Flink, I., Boersma, K., & Linton, S. (2010) Catastrophizing moderates the effect of exposure in vivo for back pain patients with pain-related fear. European Journal of Pain, 14(8), 887-892. DOI: 10.1016/j.ejpain.2010.02.003
Last May, I sketched out an idea for a research project that would look at what senior governments could do to ensure that those who make decisions about the growth of North American cities do a better job of respecting the environment. That idea has now matured into a research proposal. In this entry, I'll summarize the proposal and provide a link to the full proposal.
Here's the summary:
My proposed research will shed new light on a major, but much-neglected question: What can we learn from........ Read more »
Velicer & Yu from the University of Tuebingen have used a group of mutant M. xanthus, which are lacking the type IV pili gene to show that cooperative swarming can evolve using an alternative mechanism. The mutant bacteria do that by forming a physical net of sugars and proteins connecting them — and their rippling motion — together. Watching behavior evolve: how cool is that?... Read more »
Velicer, G., & Yu, Y. (2003) Evolution of novel cooperative swarming in the bacterium Myxococcus xanthus. Nature, 425(6953), 75-78. DOI: 10.1038/nature01908
In an era of ever increasing lifespan, a recent study estimated that there would be 81.1 million people with dementia by 2040 (Ferri et. al., 2005). The prevalence and incidence of dementia has also been documented to increase with increasing age (Fratiglioni, Ronchi & Agüero-Torres, 1999). Abraham Lincoln in his infinite wisdom, once said: “In the end, it's not the years in your life that count. It's the life in your years”. So what can we do to enhance our cognitive functions as ........ Read more »
Ferri, C., Prince, M., Brayne, C., Brodaty, H., Fratiglioni, L., Ganguli, M., Hall, K., Hasegawa, K., Hendrie, H., & Huang, Y. (2006) Global prevalence of dementia: a Delphi consensus study. The Lancet, 366(9503), 2112-2117. DOI: 10.1016/S0140-6736(05)67889-0
We know that black holes can grow to become absolutely enormous in size, tipping the scales at billions and billions of times the mass of our sun. The numbers involved make the gravitational monsters in question very hard to visualize, and pose a big mystery. Did they form from the remnants of the first stars [...]... Read more »
Mayer, L., Kazantzidis, S., Escala, A., & Callegari, S. (2010) Direct formation of supermassive black holes via multi-scale gas inflows in galaxy mergers. Nature, 466(7310), 1082-1084. DOI: 10.1038/nature09294
I know, a couple of week it was multiple exclamation points, then a reference to lyrics from a band anyone who is remotely cool is trying to forget they ever liked and this week it's all caps all the way. Hopefully, by the end of this post you'll agree that, this time at least, the subject left me with no option. I missed out a little fact about peripatus when I wrote about them the other day: Dunedin is full of them. There is even a local endemic species which appears to be restricted to one pa........ Read more »
Steens, M., Winter, D., Morris, R., McCartney, J., & Greenslade, P. (2007) New Zealand's giant Collembola: New information on distribution and morphology for Holacanthella Borner, 1906 (Neanuridae: Uchidanurinae). New Zealand Journal of Zoology, 34(1), 63-78. DOI: 10.1080/03014220709510065
Esther Herrmann (Max Planck Institute for Evolutionary Anthropology, Germany) and coworkers have found that, relative to each other, bonobos possess a superior grasp of social causality, while chimpanzees possess a superior grasp of physical causality. This news feature was written on August 28, 2010.... Read more »
Herrmann, E., Hare, B., Call, J., & Tomasello, M. (2010) Differences in the Cognitive Skills of Bonobos and Chimpanzees. PLoS ONE, 5(8). DOI: 10.1371/journal.pone.0012438
Contrary to accepted wisdom, high protein intake does not seem to be harmful to mineralization of bone, according to Seattle-based researchers reporting in the American Journal of Clinical Nutriton. Mineralization of bone is important because higher bone mineral content generally translates to lower risk of fractures. A consistent criticism of low-carbohydrate diets in the past is [...]... Read more »
Beasley, J., Ichikawa, L., Ange, B., Spangler, L., LaCroix, A., Ott, S., & Scholes, D. (2010) Is protein intake associated with bone mineral density in young women?. American Journal of Clinical Nutrition, 91(5), 1311-1316. DOI: 10.3945/ajcn.2009.28728
Is animal cruelty a “red flag” for family violence? investigating co-occurring violence toward children, partners, and pets From Journal of Interpersonal Violence This week in the UK a nation of animal lovers were horrified at the CCTV footage circulated on YouTube that caught a woman throwing a cat in a wheely bin. For all who [...]... Read more »
DeGue, S., & DiLillo, D. (2008) Is Animal Cruelty a "Red Flag" for Family Violence?: Investigating Co-Occurring Violence Toward Children, Partners, and Pets. Journal of Interpersonal Violence, 24(6), 1036-1056. DOI: 10.1177/0886260508319362
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