The news industry's business model is challenged by the likes of Twitter.
"It does not happen very often but essentially if we feel that a business model is challenged and the company is not responding".
The universal applicability and appropriateness of Hempel's model was challenged.
However, this PINK1-Parkin signaling pathway model was challenged by Richard J. Youle's latest research.
It wasn't until 1610, when Galileo Galilei observed the moons of Jupiter and the phases of Venus, that the geocentric model was challenged by observations it could not explain and was eventually replaced by a heliocentric model.
This '12RSS anchoring model' is challenged by our suggestion that Jβ 12RSSs are captured by Dβ 23RSSs.
The winning model is challenged by in silico experiments.
This model was challenged using a subset of 23 freeze thawed training samples.
However, this model is challenged by the conclusions of the genetic studies.
Furthermore, the model was challenged with another, unknown, model compound and proved its discriminative capability (Hrach et al. 2011).
