625 research outputs found
D in the presence of spillovers, revisited
No full textThis is both a replication of Eberhardt et al. (Review of Economics and Statistics, 2013, 95(2), 436–448) using different software, and a critical extension and diagnostic reassessment of the original results. The main findings of the paper are confirmed and sometimes reinforced. We point out some inconsistencies, in particular in the calculation of standard errors for the common correlated effects pooled model; we extend the diagnostic checks; lastly, in the spirit of the original contribution, we show how local cross-sectional dependence diagnostics can be used to provide a first assessment of the direction of spillovers. We provide complete replication code in open source R
Alien Registration- Di Millo, Maria D. (Portland, Cumberland County)
No full texthttps://digitalmaine.com/alien_docs/23030/thumbnail.jp
Experimental Investigation on Soot and NOx Formation in a DI Common Rail Diesel Engine with Pilot Injection
No full textComputational analysis of internal and external EGR strategies combined with Miller cycle concept for a two stage turbocharged medium speed marine Diesel engine
No full textCombining dual stage turbocharging with extreme Miller timings to achieve NOx emissions reductions in marine Diesel engines
No full textPhenotype of the Millo Corvo maize cultivar and ears comparison with two other maize traditional cultivars.
No full text<p>(A) Plant at maturity, (B) immature ear with silks, (C) tassel and (D) ear of Millo Corvo cultivar, (E) ear of Ottofile cultivar and (F) ear of Scagliolo cultivar.</p
Propuesta didáctica para la ejecución de la flauta de Millo. "Diálogo de saberes".
No full textEl presente trabajo se basa en la creación de una propuesta didáctica, nutrida de los saberes que brindan la tradición oral y los diferentes referentes escritos consultados. Esta propuesta, permite al estudiante aprender a ejecutar la flauta de millo, mediante el ejercicio vivo de la música, a través de temas creados en carácter secuencial que permitan al estudiante, apropiar cada una de las técnicas necesarias para la ejecución de este instrumento.Licenciado en MúsicaTesis de pregrad
Experimental Investigation on Three Different Ceramic Substrate Materials for a Diesel Particulate Filter
No full textThree different ceramic substrate materials (Silicon Carbide, Cordierite and Aluminum Titanate) for a Diesel Particulate Filter (DPF) for a European passenger car diesel engine have been experimentally investigated in this work.
The filters were soot loaded under real world operating conditions on the road and then regenerated in two different ways that simulate the urban driving conditions, which are the most severe for DPF regeneration, since the low exhaust flow has a limited capability to absorb the heat generated by the soot combustion.
The tests showed higher temperature peaks, at the same soot loading, for Cordierite and Aluminum Titanate compared to the Silicon Carbide, thus leading to a lower soot mass limit, which in turn required for these components a higher regeneration frequency with draw backs in terms of fuel consumption and lube oil dilution. On the other hand Cordierite and Aluminum Titanate could guarantee a lower thermal loss across the DPF, thus allowing the attainment of higher temperature levels and consequently of higher efficiencies of an SCR system placed downstream of the DPF
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