When Push Comes to Shove:

Rethinking the national organ transplant program: when push comes to shove.

EGF Receptor Activation: Push Comes to Shove

A study by Zhang et al. (2006) in this issue of Cell provides compelling evidence that the tyrosine kinase domain of the epidermal growth factor receptor (EGFR) is activated by the formation of an asymmetric dimer, with one kinase domain in the EGF-mediated dimer activating the other through an allosteric mechanism.

Implications of Wealth Heterogeneity For Macroeconomics

Today’s dominant strain of macroeconomic models supposes that aggregate consumption can be understood by assuming the existence of a ‘representative agent’ whose behavior rationalizes observed outcomes. But representative agent models yield embarrassingly implausible (and empirically inaccurate) descriptions of consumption behavior. When push comes to shove, real-world forecasters (including th...

When Push Comes to Shove: A Preliminary Study of the Relation Between Interaction Dynamics and Young Children’s Verb Use

The maps-for-verbs framework predicts that our use of verbs to describe simple whole-body interactions is influenced by the characteristics of the physical dynamics in the before, during and after phases of the interaction. We report an initial investigation of this claim in a study in which young children were asked to describe movies of simple interactions governed by the dynamics proposed in...

When push comes to shove: exclusion processes with nonlocal consequences

Stochastic agent-based models are useful for modelling collective movement of biological cells. Lattice-based random walk models of interacting agents where each site can be occupied by at most one agent are called simple exclusion processes. An alternative motility mechanism to simple exclusion is formulated, in which agents are granted more freedom to move under the compromise that interactio...