Much work has gone into the construction of quasicontinuum energies that reduce the coupling error along the interface between atomistic and continuum regions. The largest consistency errors are typically pointwise O( 1 ε ) errors, and in some cases this has been reduced to pointwise O(1) errors. In this paper we show that one cannot create a coupling method using a finite-range coupling interf...

Sepsis is a systemic inflammatory response syndrome in the presence of suspected or proven infection, and it may progress to or encompass organ failure (severe sepsis) and hypotension (septic shock). Clinicians possess an arsenal of supportive measures to combat severe sepsis and septic shock, and some success, albeit controversial, has been achieved by using low doses of corticosteroids or rec...

We prove that there is no degree invariant solution to Post’s problem that always gives an intermediate degree. In fact, assuming definable determinacy, if W is any definable operator on degrees such that a <W (a) < a′ on a cone then W is low2 or high2 on a cone of degrees, i.e., there is a degree c such that W (a)′′ = a′′ for every a ≥ c or W (a)′′ = a′′′ for every a ≥ c. A striking phenomenon...

The Australian government has announced to price carbon at an initial price of $23 per tonne. Despite detailed modelling undertaken by the Commonwealth Treasury, there is widespread speculation about the possible economic impact of a carbon tax in Australia. In this paper we build a computable general equilibrium (CGE) model incorporating many new features to deal with the issue of emissions an...

This paper considers how actions to slow atmospheric accumulation of greenhouse gases from fossil fuel use could also reduce "criteria" air pollutants (as defined in the Clean Air Act) in the U.S. The benefits that result would be "ancillary" to greenhouse gas abatement. Moreover, these benefits would tend to accrue in the near term, while any benefits from reduced climate change mostly accrue ...