2012年6月22日星期五
2012年6月20日星期三
2012年6月19日星期二
SocialPipeline 06/20/2012 (a.m.)
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Events » Blog Archive » The Search for Genius: Einstein’s Brain
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Marian Diamond
Marian Diamond received some of the brain, and proceeded to study it. She discovered that when compared to normal brains, areas of Einstein’s brain had higher density of glial cells relative to neurons.Work done since by Elizabeth Isaacs (UCL Institute of Cognitive Neuroscience) interestingly showed that children who struggled with maths had lower density of glial cells, suggesting a link between that area of the brain and proficiency in mathematics.
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SocialPipeline 06/19/2012 (p.m.)
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As with most projects and public and government funded programs and business the will and opinions of the people can have a major effect on the future of those projects and businesses. As Abraham Lincoln once said "With public sentiment, nothing can fail; without it nothing can succeed." NASA is one of the major government funded programs that is under close scrutiny by the public. [10] The budget of NASA tends to fluctuate with the public opinion and previous failures and successes that NASA has had. During the mid to late-1960's was the highest NASA has seen with it being 4.41% of the U.S budget. With the near disaster of Apollo 13 in the early 1970's the budget of NASA took a turn for the worst and started on a steady decline till it was about 1% of the U.S budget from 1970-1990. When the crash of the Space Shuttle Columbia occurred in 2003 the budget for NASA dropped below 0.75% of the U.S budget and is below 0.5% in the current year (2012). [11] The American public perceives the NASA budget as commanding a much larger share of the federal budget than it in fact does. A 1997 poll reported that Americans had an average estimate of 20% for NASA's share of the federal budget, far higher than the actual 0.5% to under 1% that has been maintained throughout the late '90s and first decade of the 2000s.[12]
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Wait, Did This 15-Year-Old From Maryland Just Change Cancer Treatment? - Forbes
- Compared with the 60-year-old diagnostic technique called enzyme-linked immunosorbent assay (or ELISA), used in pregnancy test strips and viral checks for HIV, West Nile and hepatitis B, Andraka’s sensor is 168 times faster, 26,667 times less expensive, and 400 times more sensitive. It can spot the presence of the cancer-linked protein well before the cancer itself becomes invasive. This could save the lives of thousands of pancreatic cancer victims each year. The sensor costs $3 (ELISA can cost up to $800) and ten tests can be performed per strip, with each test taking five minutes. It can be used also to monitor resistance to antibiotics and follow the progression of treatment of cancer patients undergoing chemotherapy or radiation.
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2012年6月15日星期五
SocialPipeline 06/16/2012 (a.m.)
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China Goes Shopping for German Factories - Businessweek
- So far this year, nine German “Mittelstand” companies, typically family-owned with fewer than 500 employees, have agreed to be acquired by Chinese buyers, bringing the total to 21 since the beginning of 2011
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2012年6月12日星期二
SocialPipeline 06/13/2012 (a.m.)
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- N1: Neuron 1 name
N2: Neuron 2 name
Type: Type of synapse: S: Send or output (Neuron 1 pre-synaptic to Neuron 2); Sp: Send-poly (Neuron 1 is pre-synaptic to more than one postsynaptic partner. Neuron 2 is just one of these post-synaptic neurons, see Figure 1 below. In White et al, 1986, these polyadic synaptic connections were denoted by “m” in the tables of Appendix 1); R: Receive or input (Neuron 1 is post-synaptic to Neuron 2); Rp: Receive-poly (Neuron 1 is one of several post-synaptic partners of Neuron 2. See Figure 1 and above); EJ: Electric junction; NMJ: Neuromuscular junction (only reconstructed NMJ's are represented).
It must be noted that at polyadic synaptic sites, not all “send-poly” were faithfully labeled as such in White et al, 1986. Some pre-synaptic connections were labeled simply as “sends”. Reconciliation of chemical synapses did not previously distinguish between send from send-poly and receive from receive-poly. In this new reconciliation, the total number of send and send-poly is equal to the total number of receive and receive-poly (S+Sp=R+Rp). Every documented synapse is now listed in this Table, both with respect to the sending neuron and with respect to the receiving neuron(s).
Nbr: Number of synapses between the given neuron pair.
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Ball-and-stick: 5 - Parallel Net -- Sage
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In a parallel context across several machines, communication between hosts can be computationally inefficient when the frequency of events is high and when the message being sent is large. NEURON uses an efficient priority queueing mechanism to deliver events to targets after the delay specified by the NetCon. The message passed is succinct. It is an integer, the unique global identifier (gid) of the source. The following two figures illustrate these ideas and come from Hines M.L. and Carnevale N.T, Translating network models to parallel hardware in NEURON, Journal of Neuroscience Methods 169 (2008) 425–455. Users should also consult the ParallelContext reference.
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