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  • January 9, 2011
  • 02:58 PM
  • 1,051 views

“Is Happiness Contagious Online” Paper presented at #HICSS

by Anatoliy Gruzd in Social Media Lab

This week, I traveled to Hawaii to present a paper entitled “Is Happiness Contagious Online? A Case of Twitter and the 2010 Winter Olympics” (co-authored with Sophie Dorion and Philip Mai) at the 44th Annual Hawaii International Conference on System Sciences (HICSS). HICSS is one of the longest-standing continuously running scientific conferences in the world. [...]... Read more »

Gruzd, A., Doiron, S., Mai, P. (2011) Is Happiness Contagious Online? A Case of Twitter and the 2010 Winter Olympics. Proceedings of the 44th Hawaii International Conference on System Sciences (HICSS), January 4-7, Kauai, HI, USA. info:/

  • January 5, 2011
  • 07:59 AM
  • 1,218 views

Definition of Risk

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


What is risk anyway?
I read this paper already some time ago. It is very important to have a clear definition of the terms used in research. But from my previous experience I know that also in business a clear understanding of the different aspects of risks is important to stay consistent.

Case Study
At a client I was involved in a company wide risk assessment. The participating middle managers were required to list and assess relevant risks using an Excel sheet. There were predefined cate........ Read more »

Kaplan, S., & Garrick, B. (1981) On The Quantitative Definition of Risk. Risk Analysis, 1(1), 11-27. DOI: 10.1111/j.1539-6924.1981.tb01350.x  

  • January 5, 2011
  • 02:45 AM
  • 1,050 views

Invisible hairs cause baldness

by sciencebase in Sciencebase Science Blog

A topic close to my scalp: male-pattern baldness. Regular readers will be aware of my long, wavy locks from teenage years. But, as I got older, it all waved goodbye (my Dad’s joke! He’s even less than cranially hirsute too). Now, scientists in Pennsylvania reckon they have shown that faulty stem cells in the scalp [...]Invisible hairs cause baldness is a post from: Sciencebase Science Blog
... Read more »

  • January 3, 2011
  • 11:18 AM
  • 1,483 views

Learn from Christine O'Donnell's Possible 'Witch Trial': Be Cautious in the Court of Public Opinion

by Dr. Ken Broda-Bahm in Persuasive Litigator

By: Dr. Ken Broda-Bahm - When Christine O'Donnell, the Tea Party favorite who won the Republican nomination for a Delaware Senate seat before losing in November's general election, received word of an U.S. Attorney's Office investigation and possible charges stemming from misuse of about $20,000 in campaign funds to pay her personal expenses, she immediately took to the airwaves. On a variety of network and cable news shows, she unequivocally denied the charges and went further to call the inves........ Read more »

Michele DeStefano Beardslee. (2009) Advocacy in the Court of Public Opinion, Installment One: Broadening the Role of Corporate Attorneys. The Georgetown Journal of Legal Ethics, 22(4). info:/

  • January 3, 2011
  • 10:05 AM
  • 1,377 views

Effective Performance Management

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


Aviation and steering a company can be viewed as somehow alike. At least this is the starting point for the article by Srinivas (2009) reviewed today.

Aviation Analogy
But unlike companies a pilot has some advantages: a clear starting point, a given destination, he knows on which path to get there, he knows anytime if he is off course and he also knows how to get back on track.

Company as a staggering Airplane
On the other hand within a company you have a hard time defining those parame........ Read more »

Srinivas, S. (2009) Effective Performance Management . Journal of Business Logistics, 30(2), 85-100. info:/

  • January 3, 2011
  • 09:30 AM
  • 1,459 views

So maybe reading *should* be harder

by gameswithwords in Games with Words

Some weeks back I chided Jonah Lehrer for his assertion that he'd
love [e-readers] to include a feature that allows us to undo their ease, to make the act of reading just a little bit more difficult. Perhaps we need to alter the fonts, or reduce the contrast, or invert the monochrome color scheme. Our eyes will need to struggle, and we’ll certainly read slower, but that’s the point: Only then will we process the text a little less unconsciously, with less reliance on the ventral pathway. We ........ Read more »

Connor Diemand-Yauman, Daniel M. Oppenheimer, & Erikka B. Vaughan. (2011) Fortune favors the bold (and the italicized): Effects of disfluency on educational outcomes. Cognition, 111-115. info:/doi:10.1016/j.cognition.2010.09.012

  • December 30, 2010
  • 04:20 PM
  • 969 views

Burrowing Owls Embark on Cross-Continent Migration

by Scott A. in JournOwl

I’ve definitely been neglecting my journal reading over the last few months, and if I want to be honest it’s probably more like a 6 month hiatus.  As I returned from a field visit in Winters, California, I got the itch to see what’s up with the latest in raptor research.  And the little voice [...]... Read more »

Holroyd, G., Trefry, H., & Duxbury, J. (2010) Winter Destinations and Habitats of Canadian Burrowing Owls. Journal of Raptor Research, 44(4), 294-299. DOI: 10.3356/JRR-09-87.1  

  • December 29, 2010
  • 07:35 PM
  • 739 views

The geography of Food vs. Forests

by Paul Spraycar in Beyond Climate Change

To answer the question of how to meet the food and fuel needs of a growing, increasingly prosperous human population without cutting down the world’s forests in the process, a research team literally drew a map of carbon stocks and crop yields for the entire globe. Based on the “strong differences in the carbon-crop tradeoff among regions,” increasing yield on existing tropical croplands is preferable to clearing new land. The authors used maps of crop distribution and average yields, toge........ Read more »

  • December 28, 2010
  • 07:00 AM
  • 1,312 views

Completely Automated Public Turing-test-to-tell Computers and Humans Apart

by David Bradley in Sciencetext

Web sites, services, and apps everywhere often require a user login before you can use the service and even once you’re logged in, there’s often an additional step you must take to prove that you are human, rather than a spam bot or other computer script up to mischief. The device is commonly known as [...]Post from: David Bradley's Sciencetext Tech TalkCompletely Automated Public Turing-test-to-tell Computers and Humans Apart
... Read more »

Brian M. Powell, Adam C. Day, Richa Singh, Mayank Vatsa, & Afzel Noore. (2010) Image-based face detection CAPTCHA for improved security. Int. J. Multimedia Intelligence and Security, 1(3), 269-284. info:/

  • December 27, 2010
  • 10:51 PM
  • 2,109 views

Meme Theory Today (NSFW)

by Neurobonkers in Neurobonkers

A look at how meme theory can explain the wide spread misquotation of it's own "inventor" Richard Dawkins.... Read more »

  • December 26, 2010
  • 10:37 AM
  • 1,115 views

Oscar: training data, models, etc

by egonw in Chem-bla-ics

Oscar uses a Maximum Entropy Markov Model (MEMM) based on n-grams. Peter Corbett has written this up (doi:10.1186/1471-2105-9-S11-S4). So, it basically is statistics once more. If you really want a proper bioinformatics education, so do your PhD at a (proteo)chemometrics department.

N-grams are word parts of n characters. For example, the trigrams of acetic acid include ace, cid, tic, eti, and aci. N-grams of length four include acid, etic, and acet. The MEMM assigns weights to these n-grams, a........ Read more »

  • December 23, 2010
  • 08:54 AM
  • 674 views

an instance of misconstrued media reporting: placebos

by Ragamuffin in How We Are Hungry

A most recent example of the media mis-representing scientific findings is the recent NPR report on placebos being equally effective in IBS patients as "the strongest prescription drugs", even when the patients knew that they were being given the placebo. This coverage was a translation of a study out of Harvard Medical, and published in PLoS ONE.... Read more »

Ted J. Kaptchuk, Elizabeth Friedlander, John M. Kelley, M. Norma Sanchez, Efi Kokkotou, Joyce P. Singer, Magda Kowalczykowski, Franklin G. Miller, Irving Kirsch, Anthony J. Lembo. (2010) Placebos without Deception: A Randomized Controlled Trial in Irritable Bowel Syndrome. PLoS. info:/

  • December 20, 2010
  • 06:52 AM
  • 1,116 views

Case Study Research for Theory Creation

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


How is new knowledge generated in the social sciences? One method is case study research.

Case Study
A case study is an in-depth investigation of a specific question regarding an individual research object, it can be differentiated using the following criteria:
Number of objects investigated: single / multiple cases
Number of levels of analysis: embedded design
Data collection: used data collection methods (eg. interviews, written files,...)
Kind of data ascertained: qualitative / quantita........ Read more »

Eisenhardt, K. (1989) Building Theories from Case Study Research. The Academy of Management Review, 14(4), 532. DOI: 10.2307/258557  

  • December 15, 2010
  • 02:55 PM
  • 1,341 views

Bias in Supply Management Decisions

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


... and what to do about it.
Decisions within a company are not made on pure rational grounds. Assuming that there is the will to make a rational decision, nevertheless limits in information gathering, computing capabilities and memory lead to irrational conclusions (bounded rationality).

So the goal must be to enhance rational decision making and for this end Kaufmann et al. (2009) developed a framework to combat irrationality.

Methodology
The authors use case studies to analyze companie........ Read more »

Kaufmann, L., Michel, A., & Carter, C.R. (2009) Debiasing Strategies in Supply Management Decision-Making. Journal of Business Logistics, 30(1), 85-106. info:/

  • December 13, 2010
  • 05:14 AM
  • 1,422 views

Enablers and Barriers to Risk Mitigation

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


Everybody concerned with the task of developing risk mitigation strategies has a list in his mind of different factors influencing a company's exposure to risk and if you think about it: those factors are probably related.
Example: The number of suppliers for one component can have a huge impact on risk, but the necessity of a high number of (redundant) suppliers may itself be affected by the trust you built with your main supplier. Both trust and having multiple suppliers affect supply cha........ Read more »

Faisal, M. N., Banwet, D.K., & Shankar, R. (2006) Supply Chain Risk Mitigation: Modeling the Enablers. Business Process Management Journal, 12(4), 535-552. info:/

  • December 9, 2010
  • 05:51 AM
  • 985 views

Inter-speaker variation and detection of invariant structure

by Sean Roberts in A Replicated Typo 2.0

Results of a web-experiment. Gomez (2002) shows that increased variation in adjacent dependencies can cause learners to pick up on long-distance dependencies. I hypothesise that the variation in input from multiple speakers gives better cues to more abstract structures than input from one speaker alone.... Read more »

Gómez RL. (2002) Variability and detection of invariant structure. Psychological science : a journal of the American Psychological Society / APS, 13(5), 431-6. PMID: 12219809  

  • December 9, 2010
  • 05:00 AM
  • 929 views

A few facts about asbestos

by sciencebase in Sciencebase Science Blog

Today, medical journal The Lancet has publicly criticised the Canadian government for its attitude towards asbestos, saying that although Canada will not expose its own citizens to asbestos, it will continue exporting the deadly substance to developing nations [Canada accused of hypocrisy, Lancet]. A few facts about asbestos All forms of asbestos are proven human [...]A few facts about asbestos is a post from: Sciencebase Science Blog
... Read more »

Collegium Ramazzini. (2010) Asbestos is still with us: repeat call for a universal ban. International Journal of Environment and Health, 4(4), 380-388. info:/

  • December 8, 2010
  • 04:41 AM
  • 981 views

Personalized Products and its Impacts on Supply Chain Design

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


Experts from research and business alike argue that within the last decades consumers have grown to be a more demanding factor for supply chain management. At the same time manufacturing and supply chain strategies adapted to this development (from lean to agile, see Christopher and Towill, 2000).

But how are customer demands going to develop? Are we already seeing the decentralized manufacturing world, where everybody uses his own 3D printer to produce individual products on their desks? ........ Read more »

  • December 8, 2010
  • 04:41 AM
  • 983 views

Personalized Products and their Impact on Supply Chain Design

by Daniel Dumke in SCRM Blog - Supply Chain Risk Management


Experts from research and business alike argue that within the last decades consumers have grown to be a more demanding factor for supply chain management. At the same time manufacturing and supply chain strategies adapted to this development (from lean to agile, see Christopher and Towill, 2000).

But how are customer demands going to develop? Are we already seeing the decentralized manufacturing world, where everybody uses his own 3D printer to produce individual products on their desks? ........ Read more »

  • December 7, 2010
  • 09:21 AM
  • 593 views

Pregnant While Already Pregnant

by Nature Education in Student Voices

Ladies, lo and behold, here come the super-mothers! A study recently published i...... Read more »

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