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Esta colección incluye artículos de profesores de la Pontificia Universidad Católica de Chile, publicados en revistas nacionales y extranjeras.

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Effectiveness of a health technician-delivered brief intervention for alcohol: a Bayesian reanalysis of a clinical trial

Barticevic Lantadilla, Nicolás A.; Poblete A., Fernando; Bradshaw, Laura; Bendtsen, Marcus (2022)

Objective: To reanalyze a clinical trial on the effectiveness of a Brief Intervention (BI) delivered by non-professionals to reduce risky alcohol drinking. Our previous null-hypothesis test of the effects of the BI yielded ...
Where School Is Cool

Rudnick van de Wyngard, Hugh; Palma Behnke, Rodrigo; Carneiro, Sandoval; Assis, Tatiana M. L.; Salazar, Harold; Valencia Velasquez, Jaime Alejandro (IEEE, 2010)

Electrical Engineering and Power Engineering are alive and well in Latin America. While IEEE and IEEE Power and Energy Society look for ways to entice high school students in the United States to go into engineering, the ...
Some Remarks on the Paper "semQA: SPARQL with Idempotent Disjunction”

Arenas Saavedra, Marcelo Alejandro; Gutiérrez Gallardo, Claudio; Pérez, Jorge (IEEE, 2011)

In the paper, “semQA: SPARQL with Idempotent Disjunction”, the authors study the RDF query language SPARQL. In particular, they claim that some of the results presented in are not correct. In this note, we refute the claims ...
Fuzzy modelling of pulp density in a mineral grinding plant

Cipriano Zamorano, Aldo; Ramos, M.; Munoz, C.; Guarini, M.; Guesalaga, A. (IEEE, 1994)

This paper describes an identification algorithm of fuzzy models and its application to the modeling of the pulp density in a mineral grinding plant. The parameters of the fuzzy model are estimated using information obtained ...
From Reliability to Resilience: Planning the Grid Against the Extremes

Moreno Vieyra, Rodrigo Andrés; Panteli, M.; Mancarella, P.; Rudnick van de Wyngard, Hugh; Lagos, T.; Navarro Espinosa, Alejandro Andrés; Ordonez, F.; Araneda, J. C. (IEEE, 2020)

Although extreme events, mainly natural disasters and climate change-driven severe weather, are the result of naturally occurring processes, power system planners, regulators, and policy makers do not usually recognize ...
Distribution Pricing: Are We Ready for the Smart Grid?

Li, F.; Marangon, J.; Rudnick van de Wyngard, Hugh; Marangon, L.; Padhy, N.; Brunekreeft, G.; Reneses, J.; Kang, C. (IEEE, 2015)

Energy transportation costs typically make up a quarter of consumers? electricity bills, and most of this amount (90% in the United Kingdom, 75% in Brazil and Spain, and 60% in India, for example) is due to energy ...
The Green Effect

L. A. Barroso; Rudnick van de Wyngard, Hugh; F. Sensfuss; P. Linares (IEEE, 2010)

This article contributes to the discussion by assessing some general market and economic impacts of renewable generation in some electricity markets in Spain, Germany and Latin America. The need to diversify away from ...
Disaster Management

Rudnick van de Wyngard, Hugh; Mocarquer, S.; Andrade, Eduardo; Vuchetich, Esteban; Miquel Duran, Pedro Enrique (IEEE, 2011)

In this paper its is discussed that the transmission and distribution facilities are more vulnerable to major earthquakes than the generation facilities. The design of the generation facilities usually adopts a higher ...
Flexible Connections: Solutions and Challenges for the Integration of Renewables in South America

Rudnick van de Wyngard, Hugh; Barroso, Luiz; Llarens, Daniel; Watts Casimis, David; Ferreira, Rafael de Sà (IEEE, 2012)

Feed-in tariffs, quota systems, and auction schemes are all used to stimulate NCRE growth in South America. These methods present common challenges in terms of development, operation, and transmission. Common solutions to ...
Restless Waters: Fossil Fuel Emissions Conditioning a Reduction in Hydroelectric Resources in Chile

Rudnick van de Wyngard, Hugh; Palma Behnke, Rodrigo; Rudnick, A.; Benavides, C. (IEEE, 2014)

Climate change may result in a significant reduction of hydroelectric resources, worrying countries that are heavily dependent on it like many in Central and South America, where most electricity demand is met through ...
Simulating Railway and Metropolitan Rail Networks: From Planning to On-line Control

Nuñez Retamal, Felipe Eduardo; Reyes Leiva, Francisco; Grube Krebs, Pablo; Cipriano Zamorano, Aldo (IEEE, 2010)

Train-based systems are the principal means of public transportation in many of the world's cities, and continue to grow in the face of rising demand. Expanding infrastructure is costly, however, and at a certain point ...
Distribution Network Rate Making in Latin America: An Evolving Landscape

Moreno Vieyra, Rodrigo Andrés; Bezerra, B.; Rudnick van de Wyngard, Hugh; Suazo Martínez, C.; Carvalho, M.; Navarro Espinosa, Alejandro Andrés; Silva Montes, Carlos; Strbac, G. (IEEE, 2020)

Following the trend observed in developed economies, various Latin American governments are committed to reducing greenhouse gas emissions, particularly in the power sector. In countries such as Chile, Peru, Colombia, ...
Latin America Goes Electric: The Growing Social Challenges of Hydroelectric Development

Varas Valenzuela, Pablo I.; TironiRodó, Manuel; Rudnick van de Wyngard, Hugh; Rodríguez, N. (IEEE, 2013)

Hydroelectricity was, for many years, one of the main ways to meet the new electricity needs of Latin American countries. This is evidenced by the presence of some of the larger plants worldwide and the high hydroelectric ...
A Framework for Transmission Expansion Planning: A Complex Problem Clouded by Uncertainty

Velásquez Guerino, Constantin Sebastián Klaus; Watts Casimis, David; Rudnick van de Wyngard, Hugh; Bustos Sölch, Cristián Pablo (IEEE, 2016)

Transmission Expansion Planning (TEP), a complex problem that is vital to ensure the proper functioning of restructured electricity markets, is clouded by uncertainties. Timely and cost-effective transmission expansion is ...
TOI-222: a single-transit TESS candidate revealed to be a 34-d eclipsing binary with CORALIE, EulerCam, and NGTS

Lendl, M.; Bouchy, F.; Gill, S.; Nielsen, L. D.; Turner, O.; Stassun, K.; Acton, J. S.; Anderson, D. R.; Armstrong, D. J.; Bayliss, D.; Belardi, C.; Bryant, E. M.; Burleigh, M. R.; Chaushev, A.; Casewell, S. L.; Cooke, B. F.; EigmÃ¼ller, P.; Gillen, E.; Goad, M. R.; Gunther, M. N.; Hagelberg, J.; Jenkins, J. S.; Louden, T.; Marmier, M.; McCormac, J.; Moyano, M.; Pollacco, D.; Raynard, L.; Tilbrook, R. H.; Udry, S.; Vines, J. I.; West, R. G.; Wheatley, P. J.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J.; Jenkins, J. M.; Addison, B.; Briceño, C.; Brahm, R.; Caldwell, D. A.; Doty, J.; Espinoza, N.; Goeke, B.; Henning, T.; JordÃ¡n, A.; Krishnamurthy, A.; Law, N.; Morris, R.; Okumura, J.; Mann, A. W.; Rodriguez, J. E.; Sarkis, P.; Schlieder, J.; Twicken, J. D.; Villanueva, S.; Wittenmyer, R. A.; Wright, D. J.; Ziegle, C. (2019)

We report the period, eccentricity, and mass determination for the Transiting Exoplanet Survey Satellite (TESS) single-transit event candidate TOI-222, which displayed a single 3000â€‰ppm transit in the TESS 2-min cadence ...
The chemical compositions of accreted and in situ galactic globular clusters according to SDSS/APOGEE

Horta, D.; Schiavon, R. P.; Mackereth, J. T.; Beers, T. C.; Fernández-Trincado, J. G.; Frinchaboy, P. M.; García-Hernández, D. A.; Geisler, D.; Hasselquist, S.; JÃ¶nsson, H.; Lane, R. R.; Majewski, S. R.; MÃ©szÃ¡ros, S.; Bidin, C. M.; Nataf, D. M.; Roman-Lopes, A.; Nitschelm, C.; Vargas-González, J.; Zasowsk, G. (2020)

Studies of the kinematics and chemical compositions of Galactic globular clusters (GCs) enable the reconstruction of the history of star formation, chemical evolution, and mass assembly of the Galaxy. Using the latest data ...
Discovery of optical outflows and inflows in the black hole candidate GRS 1716−249

Cúneo, V. A.; Muñoz-Darias, T.; Sánchez-Sierras, J.; Jiménez-Ibarra, F.; Armas Padilla, M.; Buckle, D. A. H.; Casares, J.; Charles, P.; Corral-Santana, J. M.; Fender, R.; Fernández-Ontiveros, J. A.; Mata Sánchez, D.; Panizo-Espinar, G.; Ponti, G.; Torr, M. A. P. (2020)

We present optical spectroscopy obtained with the GTC, VLT, and SALT telescopes during the decline of the 2016â€“2017 outburst of the black hole candidate GRS 1716âˆ’249 (Nova Oph 1993). Our 18-epoch data set spans 6 months ...
Mid-infrared imaging- and spectro-polarimetric subarcsecond observations of NGC 1068

Lopez-Rodriguez, E.; Packham, C.; Roche, P. F.; Alonso-Herrero, A.; Díaz-Santos, T.; Nikutta, R.; González-Martín, O.; Á lvarez, C. A.; Esquej, P.; Espinos, J. M. R.; Perlman, E.; Ramos Almeida, C.; Telesc, C. M. (2016)

We present subarcsecond 7.5â€“13 Î¼m imaging- and spectro-polarimetric observations of NGC 1068 using CanariCam on the 10.4-m Gran Telescopio CANARIAS. At all wavelengths, we find: (1) A 90 Ã— 60Â pc extended polarized ...
Galaxy And Mass Assembly (GAMA): the signatures of galaxy interactions as viewed from small-scale galaxy clustering

Gunawardhan, M. L. P.; Norberg, P.; Zehavi, I.; Farrow, D. J.; Loveday, J.; Hopkins, A. M.; Davie, L. J. M.; Wang, L.; Alpaslan, M.; Bland-Hawthorn, J.; Brough, S.; Holwerda, B. W.; Owers, M. S.; Wrigh, A. H. (2018)

Statistical studies of galaxy-galaxy interactions often utilize net change in physical properties of progenitors as a function of the separation between their nuclei to trace both the strength and the observable time-scale ...
Spectral analysis of the quiescent low-mass X-ray binary in the globular cluster M30

Echiburú, C. S.; Guillot, S.; Zhao, Y.; Heinke, C. O.; Ozel, F.; Web, N. A. (2020)

We present a recent Chandra observation of the quiescent low-mass X-ray binary containing a neutron star (NS), located in the globular cluster M30. We fit the thermal emission from the NS to extract its mass and radius. ...

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