473 research outputs found
Bostonia. Volume 13
Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs
Decoupling electrocaloric effect from Joule heating in a solid state cooling device
We report a heat dynamics analysis of the electrocaloric effect (ECE) in
commercial multilayer capacitors based on BaTiO3 dielectric, a promising
candidate for applications as a solid state cooling device. Direct measurements
of the time evolution of the sample's temperature changes under different
applied voltages allow us to decouple the contributions from Joule heating and
from the ECE. Heat balance equations were used to model the thermal coupling
between different parts of the system. Fingerprints of Joule heating and the
ECE could be resolved at different time scales. We argue that Joule heating and
the thermal coupling of the device to the environment must be carefully taken
in to account in future developments of refrigeration technologies employing
the ECE.Comment: Acepted to be published in Applied Phys. Letters (2011
European economic constitution and the transformation of democracy : on class and the state of law
In the context of contemporary analyses of the Europe Union as a post-democratic form of economic governance, this article explores the (ordo)liberal character of monetary union as a regime of imposed liberty. The argument holds that rather than forcing the member states into retreat, the economic constitution of Europe strengthens their liberal foundation, securing their utility as the organised force of a mode of social reproduction founded on free labour. It develops the character of the liberal state as the political form of a free market economy with reference to Adam Smith’s classical political economy and the German ordoliberal tradition, which calls for a rule-based system of federated forms of economic governance to secure a free labour economy in conditions of mass democratic aspirations for a freedom from want. It explores the rationale of the ordoliberal distinction between the liberal character and the democratic character of the state and, in this context, assesses the meaning of liberal democracy in a post-democratic Eurozone
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