7,184 research outputs found
Solar thermoelectric generator design and panel development program
Thermoelectric and mechanical performance of silicon-germanium solar thermoelectric generato
Fiddle - Dee - Dee
https://digitalcommons.library.umaine.edu/mmb-vp/1558/thumbnail.jp
Lead Me To That Beautiful Band
https://digitalcommons.library.umaine.edu/mmb-vp/3242/thumbnail.jp
Buen vivir : la irrupción de América Latina en el campo gravitacional del desarrollo sostenible
Este artÃculo esta asociado al proyecto FONDECYT nº 1110428 (CONICYT - Chile). Una version francesa (adaptada) del presente artÃculo esta publicada en el número 46 de la revista Ecologie & Politique dedicado a las EcologÃas polÃticas actuales en América Latina (Vanhulst y Beling 2013). Agradecemos cordialmente Alejandro Pelfini, Edwin Zaccaï y Joan Martinez-Alier por sus lecturas atentas y sus valiosos comentarios.En el presente artÃculo, proponemos una revisión del contenido del Buen vivir como discurso emergente dentro del "campo gravitacional" del desarrollo sostenible: su génesis, sus fundamentos y su singularidad. En primer lugar, consideraremos las crÃticas al discurso del desarrollo y a su heredero directo: el desarrollo sostenible. Luego revisaremos brevemente la posición de América Latina en el campo discursivo global del desarrollo sostenible y el lugar del Buen vivir dentro de las controversias en torno a este campo. Abrevando en el imaginario tradicional de los pueblos originarios del continente, este nuevo discurso fue teorizado en la esfera académica y traducido en principios normativos que han permeado la esfera polÃtica, lo que es visible especialmente en Ecuador y Bolivia. En este artÃculo nos referimos al "Buen vivir" como la reelaboración contemporánea del concepto quechua Sumak Kawsay y conceptos afines de otros pueblos autóctonos. Incluye tanto la idea de una interdependencia entre la sociedad y su medio ambiente natural como también una concepción de lo universal como realidad plural. Por último, más allá de sus implicancias para el debate medio ambiental, la propuesta del Buen vivir implica también una redefinición de las relaciones entre ciudadanÃa, Estado y mercado.This paper aims at reviewing the content of Buen vivir as an emergent discourse within the "gravitational field" of sustainable development: its genesis, its foundations and its singularity. First, we consider the criticisms to the development discourse and to its direct descendant: sustainable development. Next, we review the position of Latin America in the global discursive field of sustainable development and the situation of Buen vivir facing the debates therein. Drawing on the traditional repository of the aboriginal cultures of the continent, this new discourse has been theorized in the academic sphere and translated into normative principles that have permeated the political sphere, which is especially visible in the cases of Ecuador and Bolivia. In this article we refer to "Buen vivir" as the contemporary reelaboration of the quechua concept Sumak Kawsay, and other similar concepts from other indigenous nations. It includes both the idea of interdependence between society and its natural environment, as well as a conception of the universal as plural. Lastly, beyond its implications for environmental debate, Buen vivir also involves an imperative for the redefinition of relations between the citizenry, the state and the market
In-air hearing of a diving duck: A comparison of psychoacoustic and auditory brainstem response thresholds
Auditory sensitivity was measured in a species of diving duck that is not often kept in captivity, the lesser scaup. Behavioral (psychoacoustics) and electrophysiological [the auditory brainstem response (ABR)] methods were used to measure in-air auditory sensitivity, and the resulting audiograms were compared. Both approaches yielded audiograms with similar U-shapes and regions of greatest sensitivity (2000-3000 Hz). However, ABR thresholds were higher than psychoacoustic thresholds at all frequencies. This difference was least at the highest frequency tested using both methods (5700 Hz) and greatest at 1000 Hz, where the ABR threshold was 26.8 dB higher than the behavioral measure of threshold. This difference is commonly reported in studies involving many different species. These results highlight the usefulness of each method, depending on the testing conditions and availability of the animals
Dimensional Crossover in the Large N Limit
We consider dimensional crossover for an Landau-Ginzburg-Wilson model
on a -dimensional film geometry of thickness in the large -limit. We
calculate the full universal crossover scaling forms for the free energy and
the equation of state. We compare the results obtained using ``environmentally
friendly'' renormalization with those found using a direct, non-renormalization
group approach. A set of effective critical exponents are calculated and
scaling laws for these exponents are shown to hold exactly, thereby yielding
non-trivial relations between the various thermodynamic scaling functions.Comment: 25 pages of PlainTe
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