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  • 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
  • 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:/

  • August 31, 2010
  • 01:51 PM

Seeing double: perhaps is simply optical diplopia

by Pablo Artal in Optics confidential

Changes in the optics of the eye can produce double or even multiple images... a real case is explained as an example and more... ... Read more »

  • August 31, 2010
  • 12:30 PM

Genomic analysis can be powerful – in the right hands

by Rachel Bernstein in Berkeley Science Review Blog

You may have heard about the controversial genetics study connecting a set of 150 genetic markers to “exceptional longevity” (people living past 100). Everybody’s interested in living longer, so it’s not surprising that the work, published by Boston University researchers in July in the journal Science, was covered with much fanfare in many main-stream news outlets (for example, in the NY Times and Scientific American). Science even hosted a media teleconference to promote the story. Con........ Read more »

Teslovich TM, Musunuru K, Smith AV, Edmondson AC, Stylianou IM, Koseki M, Pirruccello JP, Ripatti S, Chasman DI, Willer CJ.... (2010) Biological, clinical and population relevance of 95 loci for blood lipids. Nature, 466(7307), 707-13. PMID: 20686565  

  • August 30, 2010
  • 03:48 AM

Infrastructure Vulnerability

by Jan Husdal in

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 »

Ezell, B., Farr, J., & Wiese, I. (2000) Infrastructure Risk Analysis Model. Journal of Infrastructure Systems, 6(3), 114. DOI: 10.1061/(ASCE)1076-0342(2000)6:3(114)  

  • August 30, 2010
  • 02:37 AM

Supply Chain Risk Management Dissertations (No. 1)

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management

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 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:/

  • August 25, 2010
  • 08:00 AM

Resolving conflicts to make finding a job easier

by David Bradley in Sciencetext

Politicians might tell you that, “the ongoing evaluation of global joblessness data can be represented by a negative slope on the current employment hysteresis”. Unemployment is on the rise, in other words. So, it’s rather timely that a powerful “meta job search” engine is being developed by Austrian and UK computer scientists. Tabbasum Naz of [...]Post from: David Bradley's Sciencetext Tech TalkResolving conflicts to make finding a job easier
... Read more »

Tabbasum Naz, Jürgen Dorn, & Alexandra Poulovassilis. (2010) Configurable meta-search in the job domain. Int. J. Web Engineering and Technology, 6(1), 33-57. info:/

  • August 24, 2010
  • 07:35 AM

Perceptual Warping of Colour

by Sean Roberts in The Adventures of Auck

There is evidence that categorisations can influence perception, which has been identified as a crucial argument for Relativism. In this post, the idea of perceptual warping is explained and applied to colour categorisation.... Read more »

DEBOER, B. (2000) Self-organization in vowel systems. Journal of Phonetics, 28(4), 441-465. DOI: 10.1006/jpho.2000.0125  

Goldstone, R. (1994) Influences of categorization on perceptual discrimination. Journal of Experimental Psychology: General, 123(2), 178-200. DOI: 10.1037//0096-3445.123.2.178  

Miyawaki, K., Strange, W., Verbrugge, R. R., Liberman, A. M., Jenkins, J. J., & Fujimura, O. (1975) An effect of linguistic experience: The discrimination of (r) and (l) by native speakers of Japanese and English . Perception and Psychophysics, 331-340. info:/

  • August 24, 2010
  • 05:00 AM

Evolution of Colour Terms: 8 Embodied Relationships

by Sean Roberts in A Replicated Typo 2.0

In a series of  posts, I’ve been discussing constraints on the evolution of colour terms.  In the last post, I discussed Perceptual Warping.  Here, a further adjustment to the assumptions about perceptual space is suggested.
The assumption that all perceptual spaces are the same may be unrealistic and may favour Universalism (see Levinson, 2000).  To begin with, . . . → Read More: Evolution of Colour Terms: 8 Embodied Relationships... Read more »

Levinson, S. (2000) Yeli Dnye and the Theory of Basic Color Terms. Journal of Linguistic Anthropology, 10(1), 3-55. DOI: 10.1525/jlin.2000.10.1.3  

Bornstein, M., Kessen, W., & Weiskopf, S. (1976) Color vision and hue categorization in young human infants. Journal of Experimental Psychology: Human Perception and Performance, 2(1), 115-129. DOI: 10.1037/0096-1523.2.1.115  

Roberson, D., Davidoff, J., Davies, I., & Shapiro, L. (2004) The Development of Color Categories in Two Languages: A Longitudinal Study. Journal of Experimental Psychology: General, 133(4), 554-571. DOI: 10.1037/0096-3445.133.4.554  

  • August 24, 2010
  • 03:00 AM

Synthetic ‘cradle’ boosts hope of stem cell therapies

by Wellcome Trust in Wellcome Trust Blog

Stem cells – with their famed ability to change into any type of cell – hold tremendous promise for medicine, but growing them is a challenging task. “For therapeutics, you need millions and millions of cells,” says Dr Krishanu Saha from the Whitehead Institute for Biomedical Research. “If we can make it easier for the cells [...]... Read more »

Mei, Y., Saha, K., Bogatyrev, S., Yang, J., Hook, A., Kalcioglu, Z., Cho, S., Mitalipova, M., Pyzocha, N., Rojas, F.... (2010) Combinatorial development of biomaterials for clonal growth of human pluripotent stem cells. Nature Materials, 768-778. DOI: 10.1038/nmat2812  

  • August 23, 2010
  • 02:46 AM

Measuring the Bullwhip Effect in Supply Chains

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management

The bullwhip effect in supply chains has been around for some time now. The term "bullwhip effect" originated at Procter & Gamble, and is defined as: demand amplification across echelons within a supply chain. This describes the effect that end customer demand may be very static (as for "Pampers" by Procter & Gamble), but the demand experienced by the manufacturer or supplier shows amplified demand variations. (Fransoo and Wouters (2000))

Causes of the Bullwhip Effect
Lee et al. (1........ Read more »

Fransoo, J., & Wouters, M. (2000) Measuring the bullwhip effect in the supply chain. Supply Chain Management: An International Journal, 5(2), 78-89. DOI: 10.1108/13598540010319993  

  • August 21, 2010
  • 08:42 AM


by Kevin Zelnio in The Online Laboratory of Kevin Zelnio

I absolutely adore the theory of evolution. It has a divine predictive, the results so wondrous in and of themselves. During my studies into symbiosis I have seen alot of strange and unusual adaptations, but the deeper I dig they more they keep getting stranger and stranger. The word this week is:
Top: [...]... Read more »

  • August 20, 2010
  • 10:00 AM

Exploring Information Interaction ‘Context’ with Tefko Saracevic at #IIIX2010

by Anatoliy Gruzd in Social Media Lab

I am writing from the ‘Information Interaction in Context Symposium‘ in New Brunswick (the one in New Jersey, not the one in Canada), the home of Rutgers University. Usually I would wait until a conference is over and the dust is settled before blogging about an event, but in this case I’ll make an exception. Specifically, I would like to share some of the highlights from the keynote speaker while it’s still fresh in my mind.... Read more »

Saracevic, T. (2010) The Notion of Context in "Information Interaction in Context.". Inivited keynote at the conference Information Interaction in Context. info:/

  • August 20, 2010
  • 04:26 AM

What’s the point of the semantic web?

by sciencebase in Sciencebase Science Blog

I was scanning journal tables of contents as usual this week and it occurred to me that there must be a better way to find relevant and timely research information that would be of interest to Sciencebase readers…and, of course, out pops the following title: Technically approaching the semantic web bottleneck Sounded, perfect…kind of…but what’s [...]What’s the point of the semantic web? is a post from: Sciencebase Science Blog
... Read more »

Nikolaos Konstantinou, Dimitrios-Emmanuel Spanos, Periklis Stavrou, & Nikolas Mitrou. (2010) Technically approaching the semantic web bottleneck. Int. J. Web Engineering and Technology, 6(1), 83-111. info:/

  • August 19, 2010
  • 02:00 PM

Scientists With Data Agree…A Deepwater Oil Plume Exists in the Gulf

by Dr. M in Deep Sea News

BP want’s to deny the presence of a deepwater oil plume in the Gulf of Mexico.  The very oil plume both predicted by models published in 2003.  The very oil plume that the massive amounts of dispersant injected at depth created to prevent oil from washing ashore.  Even the government wants to deny the existence of any . . . → Read More: Scientists With Data Agree…A Deepwater Oil Plume Exists in the Gulf... Read more »

Richard Camilli, Christopher M. Reddy, Dana R. Yoerger, Benjamin A. S. Van Mooy, Michael V. Jakuba, James C. Kinsey, Cameron P. McIntyre, Sean P. Sylva, & James V. Maloney. (2010) Tracking Hydrocarbon Plume Transport and Biodegradation at Deepwater Horizon. Science. info:/10.1126/science.1195223

  • August 19, 2010
  • 11:30 AM

Cleaning up emissions

by sciencebase in Sciencebase Science Blog

Emissions trading is an economic workaround, a fudge if you will, to reducing one’s pollution levels by buying off the emissions credits of others who are polluting less. Emissions trading (also known as cap and trade) is a market-based approach used to control pollution by providing economic incentives for achieving reductions in the emissions of [...]Cleaning up emissions is a post from: Sciencebase Science Blog
... Read more »

  • August 19, 2010
  • 08:17 AM

Jumping Spiders Prefer Vegetated Corridors

by Kevin Zelnio in The Online Laboratory of Kevin Zelnio

Barriers to dispersal come in all shapes and sizes and not all are obvious. Baker conducted experiments with jumping spiders, Phidippus princeps (Salticidae) in which he manipulated corridors connecting patches of old growth fields (clover and alfalfa). Patches were either not connected (bare corridors), all connected, or partly connected by vegetated corridors (see schema [...]... Read more »

  • August 19, 2010
  • 06:00 AM

Evolution of Colour Terms: 3 Perceptual Constraints

by Sean Roberts in A Replicated Typo 2.0

Continuing my series on the Evolution of Colour terms, this post reviews evidence for perceptual constraints on colour terms. For the full dissertation and for references, go here.

The perceptual space that results from the processing of opponent colours is non-uniform (see Figure below), meaning that there are optimal ways to describe it (Jameson & D’Andrade, . . . → Read More: Evolution of Colour Terms: 3 Perceptual Constraints... Read more »

  • August 18, 2010
  • 11:22 AM

Can Energy Sector Workers Serve as Influential Public Ambassadors?

by Matthew C. Nisbet in Age of Engagement

Earlier today, in response to Sheril Kirshenbaum’s query at Discover’s Intersection blog, I spotlighted the key influence of opinion-leaders on energy related behavior.  As a follow up, let’s take a look at a new study out this month, co-authored by John Besley, an assistant professor of Communication at the University of South Carolina (and a friend of mine from our doctoral studies together at Cornell.)
In the study appearing at the International Journal of Hydrogen Ener........ Read more »

  • August 18, 2010
  • 06:15 AM

Environmental Constraints on Colour Term Evolution

by Sean Roberts in A Replicated Typo 2.0

Continuing my series on the Evolution of Colour terms, this post reviews evidence for environmental constraints on colour perception.... Read more »

Regan, B., Julliot, C., Simmen, B., Vienot, F., Charles-Dominique, P., & Mollon, J. (2001) Fruits, foliage and the evolution of primate colour vision. Philosophical Transactions of the Royal Society B: Biological Sciences, 356(1407), 229-283. DOI: 10.1098/rstb.2000.0773  

Clarke, B.C. (1979) The evolution of genetic diversity. Proceedings of the Royal Society of London B, 453-474. info:/

Webster, M., Webster, S., Bharadwaj, S., Verma, R., Jaikumar, J., Madan, G., & Vaithilingham, E. (2002) Variations in normal color vision. III. Unique hues in Indian and United States observers. Journal of the Optical Society of America A, 19(10), 1951. DOI: 10.1364/JOSAA.19.001951  

LAENG, B., BRENNEN, T., ELDEN, A., GAAREPAULSEN, H., BANERJEE, A., & LIPTON, R. (2007) Latitude-of-birth and season-of-birth effects on human color vision in the Arctic. Vision Research, 47(12), 1595-1607. DOI: 10.1016/j.visres.2007.03.011  

Dowman, M. (2007) Explaining Color Term Typology With an Evolutionary Model. Cognitive Science: A Multidisciplinary Journal, 30(1), 99-132. DOI: 10.1207/s15516709cog3101_4  

Griffin LD. (2006) Optimality of the basic colour categories for classification. Journal of the Royal Society, Interface / the Royal Society, 3(6), 71-85. PMID: 16849219  

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