Computer Science / Engineering posts
- February 18, 2011
- 01:18 PM
- 1,361 views
Do people follow trains, or do trains follow people? London’s Underground solves a riddle
by Tim De Chant in Per Square Mile
Transit oriented development is all the rage in urban planning these days. Proponents claim new transit coupled with mixed-use zoning will ignite growth in otherwise struggling areas. Detractors claim running new lines to low-density neighborhoods will leave cities burdened with white elephants. Overall, reality is probably somewhere in between, but transit and population density is [...]... Read more »
Levinson, D. (2007) Density and dispersion: the co-development of land use and rail in London. Journal of Economic Geography, 8(1), 55-77. DOI: 10.1093/jeg/lbm038
- February 13, 2011
- 09:09 AM
- 688 views
Noise of Aviation
by Frautech in Engineer Blogs
What is it that keeps us awake at night? A new study from the German Aerospace Center on sleep patterns showed the unpredictable noises are the most disturbing to our sleep patterns. Noises like an airplane taking off have a more gradual rise and fall in sound despite lasting longer than the passing of a car. And yet in sleep surveys, people report aircraft noise as disturbing their sleep. The study’s authors speculated this was because a typical sleep cycle lasts 20 minutes and so airplan........ Read more »
Basner M, Müller U, & Elmenhorst EM. (2011) Single and combined effects of air, road, and rail traffic noise on sleep and recuperation. Sleep, 34(1), 11-23. PMID: 21203365
- February 10, 2011
- 06:50 AM
- 1,339 views
Physicians on Twitter
by Dr Shock in Dr Shock MD PhD
In the latest issue of the JAMA the results of a survey is published. The authors did a search on physicians using twitter. They extracted the public profile pages of the physicians using twitter with 500 or more followers between May 1 and May 31, 2010. They analyzed the tweets of these professionals.
Of the 5156 [...]
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Chretien KC, Azar J, & Kind T. (2011) Physicians on twitter. JAMA : the journal of the American Medical Association, 305(6), 566-8. PMID: 21304081
- February 7, 2011
- 01:53 AM
- 1,382 views
Facebook Use and Personality
by Dr Shock in Dr Shock MD PhD
Does using online social networking compensate for certain character traits? It’s suggested that participating in online social networks such as Facebook or twitter is mostly done by those who struggle to make social connections in face to face contacts. The use of Facebook to enhance their social relationships online. This is called the social compensation [...]
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Gosling, S., Augustine, A., Vazire, S., Holtzman, N., & Gaddis, S. (2011) Manifestations of Personality in Online Social Networks: Self-Reported Facebook-Related Behaviors and Observable Profile Information. Cyberpsychology, Behavior, and Social Networking, 2147483647. DOI: 10.1089/cyber.2010.0087
- February 6, 2011
- 10:33 AM
- 571 views
Ultra-tough glass: bending without breaking
by Anna Goldstein in Berkeley Science Review Blog
Many years ago, my parents and brother were driving home late at night, full speed on a highway, when a large rock thrown off an overpass struck their car's windshield. There was a time when an impact like that would have shattered the windshield glass, likely leading to a tragic accident and - for me - a painful childhood. But, thanks to the modern miracle of laminated safety glass, the windshield did not shatter; it only cracked. The rock rolled away, my dad maintained control of the car, and ........ Read more »
Demetriou MD, Launey ME, Garrett G, Schramm JP, Hofmann DC, Johnson WL, & Ritchie RO. (2011) A damage-tolerant glass. Nature materials, 10(2), 123-8. PMID: 21217693
- February 4, 2011
- 09:00 AM
- 985 views
Online Plagiarism and Cybercheating Still Strong – 61.9%
by Richard Landers in NeoAcademic
In a study of 1222 undergraduates, Selwyn examined differences in cybercheating levels between a variety of majors and student types. Overall results? 61.9% of students cheat.... Read more »
Selwyn, N. (2008) Not necessarily a bad thing..: A study of online plagiarism amongst undergraduate students. Assessment , 33(5), 465-479. DOI: 10.1080/02602930701563104
- February 3, 2011
- 01:00 PM
- 1,300 views
The IF, THEN and WHY of Web use
by David Bradley in Sciencetext
Analyzing user statistics across Web sites is an issue that often comes under scrutiny from privacy advocates worried that marketing companies are exploiting their personal data to track their behavior and target them with advertising. The issue is, of course, a double-edged sword. Many of us would prefer that our online behavior is not being [...]Post from: David Bradley's Sciencetext Tech TalkThe IF, THEN and WHY of Web use
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Dong Li, Anne Laurent, & Pascal Poncelet. (2011) WebUser: mining unexpected web usage. Int. J. Business Intelligence and Data Mining, 6(1), 90-111. info:/
- February 3, 2011
- 11:40 AM
- 1,195 views
CoalHMM analysis of the human/chimpanzee ancestor, based on the orangutan genome
by Thomas Mailund in Mailund on the Internet
I’ve been wanting to write about our paper on the orangutan genome for a while, but I’ve just been too busy so far, so a little late I finally get to it. Besides the Nature paper, where we contributed to the analysis of the two sub-species of orangutans, we have two companion papers. One is [...]... Read more »
Hobolth, A., Dutheil, J., Hawks, J., Schierup, M., & Mailund, T. (2011) Incomplete lineage sorting patterns among human, chimpanzee and orangutan suggest recent orangutan speciation and widespread selection. Genome Research. DOI: 10.1101/gr.114751.110
- February 2, 2011
- 07:00 AM
- 945 views
Use and abuse on the web
by David Bradley in Sciencetext
Analysing user statistics across websites is an issue that often comes under scrutiny from privacy advocates worried that marketing companies are exploiting their personal data to track their behaviour and target them with advertising. The issue is, of course, a double-edged sword. Many of us would prefer that our online behaviour is not being monitored [...]Post from: David Bradley's Sciencetext Tech TalkUse and abuse on the web
... Read more »
Dong Li, Anne Laurent, & Pascal Poncelet. (2011) WebUser: mining unexpected web usage. Int. J. Business Intelligence and Data Mining, 6(1), 90-111. info:/
- February 1, 2011
- 02:00 PM
- 1,000 views
The trouble with encryption
by sciencebase in Sciencebase Science Blog
Lots of us encrypt files using the likes of AxCrypt and TrueCrypt. If there’s a risk of losing a device carrying sensitive information such as contacts, email, bank statements, invoices etc, then it is worth using such a tool. The ease with which a file, folder or even complete hard drive or USB device can [...]The trouble with encryption is a post from: Sciencebase Science Blog
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George R.S. Weir, & Michael Morran. (2010) Hiding the hidden message: approaches to textual steganography. Int. J. Electronic Security and Digital Forensics, 3(3), 223-233. info:/
- January 27, 2011
- 07:33 AM
- 672 views
the linguistics of heaven and hell
by Chris in The Lousy Linguist
The value of pop culture data for legitimate research is being put to the test. Exactly what, if anything, can the reality show Big Brother tell us about language change over time?Voice Onset Time is a measure of how long you wait to begin vibrating your vocal folds after you release a stop consonant. Voiced stop consonants like /b/ and /d/ require two things: 1) stop all airflow from escaping the airway by closing the glottis and 2) after the air is released, begin vibrating the glottis (by usi........ Read more »
Max Ban, Peter Graf, & Morgan Sonderegge. (2011) Longitudinal phonetic variation in a closed system. Linguistic Society of America. info:/
- January 25, 2011
- 07:00 AM
- 1,109 views
Does it matter what kind of online networker you are?
by David Bradley in Sciencetext
According to a new study in Europe there are just five types of social network user. Indeed, the types apply equally as well to any social networking site, these are: Sporadics, Lurkers, Socializers, Debaters, and Actives. As social networking sites become more and more prevalent and more and more a part of our daily lives (viz 600 million Facebook users [...]Post from: David Bradley's Sciencetext Tech TalkDoes it matter what kind of online networker you are?
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Petter Bae Brandtzæg, & Jan Heim. (2011) A typology of social networking sites users. Int. J. Web Based Communities, 7(1), 28-51. info:/
- January 25, 2011
- 07:00 AM
- 982 views
Behavioural Stratergies of Visually Disabled ‘Surfers’ [#accessibility #a11y]
by Simon Harper in Thinking Out Loud
Markel Vigo is taking up a research position spending two years with us here in Manchester and then a final year with Julio Abascal at the University of the Basque Country.... Read more »
Darren Lunn and Eleni Michailidou and Simon Harper. (2007) Observational Notes Acquired from Henshaws' Skillstep to Success Class: Observation Period 1. WEL Technical Reports, SADIe Technical Report 5(61). info:other/http://wel-eprints.cs.manchester.ac.uk/61/
Darren Lunn and Eleni Michailidou and Simon Harper. (2008) Observational Notes Acquired from Henshaws' Skillstep to Success Class: Observation Period 2. WEL Technical Reports, SADIe Technical Report 8(64). info:other/http://wel-eprints.cs.manchester.ac.uk/64/
- January 25, 2011
- 06:50 AM
- 1,636 views
teaching robots to walk, the evolutionary way
by Greg Fish in weird things
While robots aren’t yet conquering the world and won’t be anytime soon, they’re finally learning to walk, and in the near future, the kind of bipedal locomotion that’s a major part of what makes humanoid robots such an enormous engineering and maintenance challenge, may get a lot easier. And not only are they learning how [...]... Read more »
Bongard J. (2011) Morphological change in machines accelerates the evolution of robust behavior. PNAS. PMID: 21220304
Bongard, J., Zykov, V., & Lipson, H. (2006) Resilient Machines Through Continuous Self-Modeling. Science, 314(5802), 1118-1121. DOI: 10.1126/science.1133687
- January 24, 2011
- 03:36 AM
- 1,170 views
Phylogeny rules:
by Jonathan Eisen in The Tree of Life
I am a coauthor on a new paper in PLoS Computational Biology I thought I would promote here. The full citation for the paper is:
PhylOTU: A High-Throughput Procedure Quantifies Microbial Community Diversity and Resolves Novel Taxa from Metagenomic Data (doi:10.1371/journal.pcbi.1001061).
The paper discusses a new software program "phylOTU" which is for phylogenetic-based identification of "operational taxonomic units", which are also known as OTUs. What are OTUs? ........ Read more »
Sharpton, T., Riesenfeld, S., Kembel, S., Ladau, J., O'Dwyer, J., Green, J., Eisen, J., & Pollard, K. (2011) PhylOTU: A High-Throughput Procedure Quantifies Microbial Community Diversity and Resolves Novel Taxa from Metagenomic Data. PLoS Computational Biology, 7(1). DOI: 10.1371/journal.pcbi.1001061
- January 24, 2011
- 02:07 AM
- 1,167 views
Why Teenagers don’t use Social Networking Sites
by Dr Shock in Dr Shock MD PhD
In a recent study the conclusion about social networking sites and teens was that 93% of teens and young adults go online, compared to only 38% of adults over 65 years of age. It is surprising that 7% of 12-29 year olds still don’t use social networking sites. Twitter is the exception because it’s the [...]
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Baker, R., & White, K. (2010) In Their Own Words: Why Teenagers Use Social Networking Sites . Cyberpsychology, Behavior, and Social Networking, 2147483647. DOI: 10.1089/cyber.2010.0016
- January 21, 2011
- 04:49 PM
- 775 views
dbSNP, or is it?
by Todd Smith in finchtalk
dbSNP is NCBI’s catalog of DNA variation. While the SNP in the name implies a focus on Single Nucleotide Polymorphisms, dbSNP is far more comprehensive and includes length variants, mutations, and a plethora of annotations that characterize over 75...
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Sherry ST, Ward M, & Sirotkin K. (1999) dbSNP-database for single nucleotide polymorphisms and other classes of minor genetic variation. Genome research, 9(8), 677-9. PMID: 10447503
- January 21, 2011
- 06:44 AM
- 674 views
CUDA: Lattice QCD on a Personal Computer
by Marco Frasca in The Gauge Connection
At the conference “The many faces of QCD” (see here, here and here) I have had the opportunity to talk with people doing lattice computations at large computer facilities. They said to me that this kind of acitivities imply the use of large computers, user queues (as these resources are generally shared) and months of [...]... Read more »
Nuno Cardoso, & Pedro Bicudo. (2010) Lattice SU(2) on GPU's. arxiv. arXiv: 1010.1486v1
Nuno Cardoso, & Pedro Bicudo. (2010) SU(2) Lattice QCD Simulations on Fermi GPUs. arxiv. arXiv: 1010.4834v1
- January 20, 2011
- 07:00 AM
- 1,204 views
LG’s lucky break and rebooting your brand
by David Bradley in Sciencetext
LG is a strong brand. Life’s good, isn’t it? They build high-quality gadgets, mobile phones and white goods. LG is all slick websites and vast 3D TVs, viral and vital ads and green tech. Aren’t they? Well…they are today, but it doesn’t take a degree in ancient history to see that LG was once a [...]Post from: David Bradley's Sciencetext Tech TalkLG’s lucky break and rebooting your brand
... Read more »
Khan, B. (2011) Reinventing the LG brand: a manifesto for corporate brand management. J. for International Business and Entrepreneurship Development, 5(3), 199. DOI: 10.1504/JIBED.2011.038030
- January 20, 2011
- 06:26 AM
- 1,664 views
the amazing disappearing habitable world?
by Greg Fish in weird things
Gliese 581g, we hardly knew you. After a grand announcement, nearly immediate colonization plans from a leading sci-fi blog, and even a tale of supposed alien signals emanating from the newly discovered world, which was actually just an invention of the Daily Mail, rumors started surfacing that this planet wasn’t being detected in subsequent reviews [...]... Read more »
Philip C. Gregory. (2011) Bayesian Re-analysis of the Gliese 581 Exoplanet System. n/a. arXiv: 1101.0800v1
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