11,337 research outputs found
Fiscal stabilization and exchange rate instability
The aim of this paper is to examine the implications for certain key macroeconomic variables in relation to reductions in public spending. In particular, the paper looks at; the rate of inflation, the interest rate, and the rate of growth of real GNP. The paper develops an intertemporal general equilibrium model that is used to analyze reductions in government spending and the implications for the exchange rate and the balance of payments of these reductions. Section II gives a brief review of background literature and provides an intuitive explanation of our model. Section III formally derives the analytics of the model, while Section IV sketches a proof of the existence of an intertemporal equilibrium. Section V gives some policy simulations using Mexican data, and finally, Section VI concludes the paper.Economic Stabilization,Banks&Banking Reform,Public Sector Economics&Finance,Economic Theory&Research,Environmental Economics&Policies
Longitudinal investigation of medical student perceptions of a video-based guided study resource used to facilitate an eight week module in medicine
We use an action research approach to evaluate three successive cohorts of medical student perceptions of using a multi-faceted video-based guided study resource which provides academic (skills-based), social (motivation-based) and professional (clinical-based) interventions aimed at facilitating and enriching learning across an eight week module in the second year of the MBChB medical degree. Our findings show that whilst students value these video resources both as a revision tool and an aid to learning during the semester, they have specific critiques about several areas which would improve the project. We interpret our data to evidence a tangible beneficial argument for the use video-based learning objects to support student learning that is reliably reaffirmed by our longitudinal data
Thermodynamically stable lithium silicides and germanides from density-functional theory calculations
Density-functional-theory (DFT) calculations have been performed on the Li-Si
and Li-Ge systems. Lithiated Si and Ge, including their metastable phases, play
an important technological r\^ole as Li-ion battery (LIB) anodes. The
calculations comprise structural optimisations on crystal structures obtained
by swapping atomic species to Li-Si and Li-Ge from the X-Y structures in the
International Crystal Structure Database, where X={Li,Na,K,Rb,Cs} and
Y={Si,Ge,Sn,Pb}. To complement this at various Li-Si and Li-Ge stoichiometries,
ab initio random structure searching (AIRSS) was also performed. Between the
ground-state stoichiometries, including the recently found LiSi
phase, the average voltages were calculated, indicating that germanium may be a
safer alternative to silicon anodes in LIB, due to its higher lithium insertion
voltage. Calculations predict high-density LiSi and LiGe
layered phases which become the ground state above 2.5 and 5 GPa
respectively and reveal silicon and germanium's propensity to form dumbbells in
the LiSi, stoichiometry range. DFT predicts the stability of
the LiGe , LiGe and LiGe
phases and several new Li-Ge compounds, with stoichiometries LiGe,
LiGe, LiGe and LiGe.Comment: 10 pages, 5 figure
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