A growth model with endogenous innovation and accumulation of high-tech and low-tech human capital is developed. The model accounts for a recently established fact about human capital composition, which stated that \the richest countries are investing proportionally less than middle income...

A growth model with endogenous innovation and accumulation of high-tech and low- tech human capital is developed. The model accounts for a recently established fact about human capital composition, which stated that \the richest countries are investing proportionally less than middle income...

We present a unified potential-energy model that successfully reproduces the hydrogen bonding effect in proteins and can be used to represent well-defined secondary structures, both α-helices and β-sheets. The native structures of the model contain both α-helices and β-sheets and are...

The viscosity of electrorheological (ER) fluids can be changed drastically by imposing an external electric field. We study the relation between microstructures of ER fluids and their viscosity change by performing Stokesian dynamics simulations of a model ER system both in a quiescent state and...