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116 años de la Revista Chilena de Historia Natural: Breve relato de dos antes y un después
(2013)El año 2013 marcará el cierre de una etapa importante para la Revista Chilena de Historia Natural (RCHN), ya que a partir de 2014 comenzará a publicarse a través de la plataforma SpringerOpen, incluyendo algunos cambios ... 
A bibliometric analysis of aggregation operators
(201908)Aggregation operators consist of mathematical functions that enable the combining and processing of different types of information. The aim of this work is to present the main contributions in this field by a bibliometric ... 
A branch and cut algorithm for the hierarchical network design problem
(2010)The Hierarchical Network Design Problem consists of locating a minimum cost bilevel network on a graph. The higher level subnetwork is a path visiting two or more nodes. The lower level subnetwork is a forest connecting ... 
A branchandprice algorithm for the Vehicle Routing Problem with Deliveries, Selective Pickups and Time Windows
(2010)In the Vehicle Routing Problem with Deliveries, Selective Pickups and Time Windows, the set of customers is the union of delivery customers and pickup customers. A fleet of identical capacitated vehicles based at the depot ... 
A Case Study on EFL Teachers’ Beliefs About the Teaching and Learning of English in Public Education
(2015)Teachers’ beliefs have been a fascinating topic for researchers for the amount of input they can provide for reflection and the improvement of the teaching and learning of English. This case study aims at identifying the ... 
A comparative analysis of intonation between Spanish and English speakers in tag questions, whquestions, inverted questions, and repetition questions
(2013)The aim of this study was to determine the differences and similarities in intonation when producing tag questions, whquestions, inverted questions, and repetition questions among native English speakers and ESL Spanish ... 
A comparison of modeling techniques to predict hydrological indices in ungauged rivers
(2018)Predicting the natural flow regime in ungauged rivers is an important challenge in water resource management and ecological research. We developed models to predict 16 hydrological indices in a river network covering the ... 
A complete characterization of strong duality in nonconvex optimization with a single constraint
(2012)We first establish sufficient conditions ensuring strong duality for cone constrained nonconvex optimization problems under a generalized Slatertype condition. Such conditions allow us to cover situations where recent ... 
A conservation law with multiply discontinuous flux modelling a flotation column
(201806)Flotation is a unit operation extensively used in the recovery of valuable minerals in mineral processing and related applications. Essential insight to the hydrodynamics of a flotation column can be obtained by studying ... 
A contract for coordinating capacity decisions in a businesstobusiness (B2B) supply chain
(2015)We address the problem of coordinating the capacity decisions of two autonomous manufacturers engaged in a buyer–supplier relationship. We propose and analyze a supply contract designed to coordinate the companies׳ single ... 
A design peak flow estimation method for mediumlarge and datascarce watersheds with frontal rainfall
(2012)We developed a reliable peak flow estimation method for the design of hydraulic structures. The method is valid in mediumlarge watersheds (1005,000 km2) located in Chile between 32°45′ and 43°50′S, with scarcity of ... 
A dualmixed finite element method for nonlinear incompressible elasticity with mixed boundary conditions
(2007)In this paper we consider the HuWashizu principle and propose a new dualmixed finite element method for nonlinear incompressible plane elasticity with mixed boundary conditions. The approach extends a related previous ... 
A FEM–DtN formulation for a nonlinear exterior problem in incompressible elasticity
(2003)In this paper, we combine the usual infinite element method with a DirichlettoNeumann (DtN) mapping, derived in terms of an infinite Fourier series, to study the solvability and Galerkin approximations of an exterior ... 
A generalized action for(2 + 1)dimensional Chern–Simons gravity
(2012)We show that the socalled semisimple extended Poincar ́e (SSEP) algebra inDdimensions canbe obtained from the antide Sitter algebraso(D−1,2) by means of theSexpansion procedurewith an appropriate semigroupS. A general ... 
A graph approach for the construction of high order divergencefree Raviart–Thomas finite elements
(201812)We propose and analyze an efficient algorithm for the computation of a basis of the space of divergencefree Raviart–Thomas finite elements. The algorithm is based on graph techniques. The key point is to realize that, ... 
A hot terrestrial planet orbiting the bright M dwarf L 1689 unveiled by TESS
(202004)We report the detection of a transiting superEarthsized planet (R = 1.39 ± 0.09 R⊕) in a 1.4day orbit around L 1689 (TOI134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed ... 
A hybrid deterministic and stochastic approach for tsunami hazard assessment in Iquique, Chile
(202001)The southern Peru and northern Chile coastal region is an active subduction zone that contains one of the most signifcant seismic gaps in the eastern Pacifc basin (~17°S–~24°S). Although the gap was partially flled by the ... 
A mixed method for the biharmonic problem based on a system of firstorder equations.
(2011)We introduce a new mixed method for the biharmonic problem. The method is based on a formulation where the biharmonic problem is rewritten as a system of four firstorder equations. A hybrid form of the method is introduced ... 
A modular multilevel series/parallel converter for a wide frequency range operation
(201910)When providing ac output, modular multilevel converters (MMCs) experience power fluctuation in the phase arms. The power fluctuation causes voltage ripple on the module capacitors, which grows with the output power and ... 
A multicenter study evaluating the stages of change in food consumption with warning labels among Chilean university students
(20200116)Objective. To analyze the stage of change in food consumption with warning labels among Chilean university students. Materials and Methods. Crosssectional study which applied surveys in universities from all over the ...