Now showing items 1-20 of 99

    • Improved direct model predictive control for grid-connected power converters 

      Abdelrahem, M.; Rodríguez, J.; Kennel, R. (MDPI AG, 2020-05)
      This paper proposes a computationally efficient and robust direct model predictive control (DMPC) technique with enhanced steady-state performance for power converters tied to the electric utility. The discrete space vector ...
    • A dynamic linguistic decision making approach for a cryptocurrency investment scenario 

      TORRES, ROMINA; SOLIS, MIGUEL A.; SALAS, RODRIGO; BARIVIERA, AURELIO F. (Institute of Electrical and Electronics Engineers Inc., 2020-12)
      Cryptocurrencies have been receiving the sustained attention of investors since 2009. These new investment vehicles are digitally native, meaning that they are traded exclusively on 24/7 digital platforms. Consequently, ...
    • A Hybrid FCS-MPC With Low and Fixed Switching Frequency Without Steady-State Error Applied to a Grid-Connected CHB Inverter 

      RAMÍREZ, ROBERTO O.; BAIER, CARLOS R.; VILLARROEL, FELIPE; ESPINOZA, JOSÉ R.; POU, JOSEP; RODRÍGUEZ, JOSÉ (Institute of Electrical and Electronics Engineers Inc., 2020-12)
      This paper presents a new finite control set model predictive control strategy that, contrary to conventional approaches, achieves (i) zero steady-state error in the converter's AC current, and (ii) both fixed and lower ...
    • Denoising and Voltage Estimation in Modular Multilevel Converters Using Deep Neural-Networks 

      LANGARICA, SAÚL; PIZARRO, GERMÁN; POBLETE, PABLO M.; PEREDA, JAVIER; RODRIGUEZ, JOSE; NÚÑEZ, FELIPE (Institute of Electrical and Electronics Engineers Inc., 2020-11)
      Modular Multilevel Converters (MMCs) have become one of the most popular power converters for medium/high power applications, from transmission systems to motor drives. However, to operate properly, MMCs require a considerable ...
    • Spatio-Temporal Prediction of Baltimore Crime Events Using CLSTM Neural Networks 

      ESQUIVEL, NICOLÁS; NICOLIS, ORIETTA; PERALTA, BILLY; MATEU, JORGE (Institute of Electrical and Electronics Engineers Inc., 2020-10)
      Crime activity in many cities worldwide causes significant damages to the lives of victims and their surrounding communities. It is a public disorder problem, and big cities experience large amounts of crime events. ...
    • Influence of the orientation of cohesive blocks upon the structural grain of fold-and-thrust belts: An appraisal by means of analogue modeling 

      Villarroel M.; Jara P.; Herrera S.; Charrier R. (Elsevier Ltd, 2020-11)
      Analogue sand-box experiments have been set up to illustrate and analyze the control exerted by lithological heterogeneities on the evolution of a model fold-and-thrust belt (FTB). The structural architecture within many ...
    • Black carbon and other light-absorbing impurities in snow in the Chilean Andes 

      Rowe, Penny M.; Cordero, Raul R.; Warren, Stephen G.; Stewart, Emily; Doherty, Sarah J.; Pankow, Alec; Schrempf, Michael; Casassa, Gino; Carrasco, Jorge; Pizarro, Jaime; MacDonell, Shelley; Damiani, Alessandro; Lambert, Fabrice; Rondanelli, Roberto; Huneeus, Nicolas; Fernandoy, Francisco; Neshyba, Steven (Nature Publishing Group, 2019-12)
      Vertical profiles of black carbon (BC) and other light-absorbing impurities were measured in seasonal snow and permanent snowfields in the Chilean Andes during Austral winters 2015 and 2016, at 22 sites between latitudes ...
    • Elemental and Mineralogical Composition of the Western Andean Snow (18°S–41°S) 

      Alfonso, Juan A.; Cordero, Raul R.; Rowe, Penny M.; Neshyba, Steven; Casassa, Gino; Carrasco, Jorge; MacDonell, Shelley; Lambert, Fabrice; Pizarro, Jaime; Fernandoy, Francisco; Feron, Sarah; Damiani, Alessandro; Llanillo, Pedro; Sepulveda, Edgardo; Jorquera, Jose; Garcia, Belkis; Carrera, Juan M.; Oyola, Pedro; Kang, Choong-Min (Nature Publishing Group, 2019-12)
      The snowpack is an important source of water for many Andean communities. Because of its importance, elemental and mineralogical composition analysis of the Andean snow is a worthwhile effort. In this study, we conducted ...
    • Probabilistic model for real-time flood operation of a dam based on a deterministic optimization model 

      Cuevas-Velásquez V.; Sordo-Ward A.; García-Palacios J.H.; Bianucci P.; Garrote L. (MDPI AG, 2020-11)
      This paper presents a real-time flood control model for dams with gate-controlled spillways that brings together the advantages of an optimization model based on mixed integer linear programming (MILP) and a case-based ...
    • The 2k neighborhoods for grid path planning 

      Rivera, N.; Hernández, C.; Hormazábal, N.; Baier, J. (AI Access Foundation, 2020)
      Grid path planning is an important problem in AI. Its understanding has been key for the development of autonomous navigation systems. An interesting and rather surprising fact about the vast literature on this problem is ...
    • Statistical post-processing of ensemble forecasts of temperature in Santiago de Chile 

      Díaz, M.; Nicolis, O.; Marín, J.; Baran, S. (John Wiley and Sons Ltd, 2020)
      Modelling forecast uncertainty is a difficult task in any forecasting problem. In weather forecasting a possible solution is the use of forecast ensembles, which are obtained from multiple runs of numerical weather prediction ...
    • Multimodal Capacitated Hub Location Problems with Multi-Commodities: An Application in Freight Transport 

      Osorio-Mora, A.; Núñez-Cerda, F.; Gatica, G.; Linfati, R. (Hindawi Limited, 2020)
      Hub location problems (HLPs) support decision making on multimodal transport strategic planning. It is related to the location of hubs and the allocation of origin/destination (O/D) flow in a system. Classical formulations ...
    • Conceptual Framework for the Strategic Management: A Literature Review - Descriptive 

      Fuertes, G.; Alfaro, M.; Vargas, M.; Gutierrez, S.; Ternero, R.; Sabattin, J. (Hindawi Limited, 2020)
      The objective of this work is to review the literature of the main concepts that lead to determining the strategic approach, creation of strategies, organizational structures, strategy formulation, and strategic evaluation ...
    • Stable water isotopes and accumulation rates in the Union Glacier region, Ellsworth Mountains,West Antarctica, over the last 35 years 

      Hoffmann, Kirstin; Fernandoy, Francisco; Meyer, Hanno; Thomas, Elizabeth R.; Aliaga, Marcelo; Tetzner, Dieter; Freitag, Johannes; Opel, Thomas; Arigony-Neto, Jorge; Florian Göbel, Christian; Jaña, Ricardo; Rodríguez Oroz, Delia; Tuckwell, Rebecca; Ludlow, Emily; McConnell, Joseph R.; Schneider, Christoph (Copernicus GmbH, 2020-03)
      Antarctica is well known to be highly susceptible to atmospheric and oceanic warming. However, due to the lack of long-term and in situ meteorological observations, little is known about the magnitude of the warming and ...
    • Simple Finite-Control-Set Model Predictive Control of Grid-Forming Inverters with LCL Filters 

      Young, H.; Marin, V.; Pesce, C.; Rodriguez, J. (Institute of Electrical and Electronics Engineers Inc., 2020)
      Grid-forming inverters (GFI) play an important role as power interfaces for distributed generation units in islanded microgrids, where inductive-capacitive-inductive (LCL) output filters are commonly employed to mitigate ...
    • Modeling crack patterns by modified stit tessellations 

      León, R.; Nagel, W.; Ohser, J.; Arscott, S. (Slovenian Society For Stereology And Quantitative Image Analysis, 2020)
      Random planar tessellations are presented which are generated by subsequent division of their polygonal cells. The purpose is to develop parametric models for crack patterns appearing at length scales which can change by ...
    • Multipath Adaptive A∗: Factors That Influence Performance in Goal-Directed Navigation in Unknown Terrain 

      Hernandez Ulloa, C.; Baier, J.; Asin-Acha, R. (Institute of Electrical and Electronics Engineers Inc., 2020)
      Incremental heuristic search algorithms are a class of heuristic search algorithms applicable to the problem of goal-directed navigation. D∗ and D∗Lite are among the most well-known algorithms for this problem. Recently, ...
    • Technology Support for Collaborative Preparation of Emergency Plans 

      Gustavo, Zurita; Baloian, Nelson; Frez, Jonathan; Pino, Jose; Sergio, Peñafiel; Abarca, Alvaro (MDPI AG, 2019-11)
      Preparing a plan for reaction to a grave emergency is a significant first stage in disaster management. A group of experts can do such preparation. Best results are obtained with group members having diverse backgrounds ...
    • Characterization of the Chilean Public Procurement Ecosystem Using Social Network Analysis 

      Leiva, F.; Torres, R.; Nicolis, o.; Fe, R. (Institute of Electrical and Electronics Engineers Inc., 2020)
      'Mercado Público' is a Chilean electronic platform used for purchasing processes by Chilean public organizations for the last two decades. The main aim of this study is to characterize the Chilean public procurement ecosystem ...
    • Methodological proposals for the development of services in a smart city: A literature review 

      Serey J.; Quezada L.; Alfaro M.; Fuertes G.; Ternero R.; Gatica G.; Gutierrez S.; Vargas M. (MDPI AG, 2020-12)
      This literature review analyzes and classifies methodological contributions that answer the different challenges faced by smart cities. This study identifies city services that require the use of artificial intelligence ...