Geoffrey Chalmers Hanna

Hanna Kokko

in mathematics who decides to be a film maker as long as I knew that she had been well-taught in science. I am angry when I see graduate students deeply excited about studying the brain lose their joy when their laboratory environment becomes more about “getting the paper in Neuron” than about discovering new knowledge. I am angry when I see graduate students crying over gratuitously hostile or...

Re-reading Chalmers Johnson

Amgad H . Hanna and Linda

Recent findings Recently published preoperative fasting guidelines for pediatric patients are covered along with studies comparing gastric volume following different fasting intervals. Pediatric obstructive sleep apnea is discussed. Clinical presentation, severity, perioperative risks, and controversies as whether outpatient procedures are suitable for these patients are presented. New data cov...

Geoffrey Jefferson 1886-1961.

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Envelopment Thomas Eisenmann Geoffrey

Due to network effects and switching costs, platform providers often become entrenched. To dislodge them, entrants generally must offer revolutionary products. We explore a second path to platform leadership change that does not rely on Schumpeterian creative destruction: platform envelopment. By leveraging common components and shared user relationships, one platform provider can move into ano...