Mostrando registros 1-20 de 11030

    • Life-cycle valuation of different university majors. Case study of Chile 

      Lara, Bernardo; Meller Bock, Patricio; Valdés, Gonzalo (Asociación Interciencia, 2017)
      The aim of this paper is to calculate the rate of return and the net present value for several fields of university studies in Chile. The methodology employed involves the use of earnings over the life cycle for individuals ...
    • Graph logics with rational relations: the role of word combinatorics 

      Barceló Baeza, Pablo; Muñoz, Pablo (Association for Computing Machinery, 2017)
      Graph databases make use of logics that combine traditional first-order features with navigation on paths, in the same way logics for model checking do. However, modern applications of graph databases impose a new requirement ...
    • Geostatistical modeling of the geological uncertainty in an iron ore deposit 

      Mery Guerrero, Nadia Macarena; Emery, Xavier; Cáceres Saavedra, Alejandro; Ribeiro, Diniz; Cunha, Evandro (Elsevier, 2017)
      This paper addresses the problem of quantifying the joint uncertainty in the grades of elements of interest (iron, silica, manganese, phosphorus and alumina), loss on ignition, granulometry and rock types in an iron ore ...
    • A systematic literature review about technologies for self-reporting emotional information 

      Fuentes, Carolina; Herskovic, Valeria; Rodriguez, Iyubanit; Gerea, Carmen; Marques Samary, Maira Rejane; Rossel, Pedro O. (Springer, 2017)
      Emotional information is complex to manage by humans and computers alike, so it is difficult for users to express emotional information through technology. Two main approaches are used to gather this type of information: ...
    • Energy-efficient precoded coordinated multi-point transmission with pricing power game mechanism 

      Fu, Shu; Wen, Hong; Wu, Jinsong; Wu, Bin (IEEE Inst Electrical and Electronic Engineering Inc., 2017)
      The coordinated multiple-point (CoMP) transmission technique recently has been considered as an efficient method to achieve energy-efficient cellular wireless communications and enhance cell-edge user performance. Conventional ...
    • Coordination and uncertainty in strategic network investment: case on the north seas grid 

      Konstantelos, Ioannis; Moreno Vieyra, Rodrigo; Strbac, Goran (Elsevier, 2017)
      The notion of developing a transnational offshore grid in the North Sea has attracted considerable attention in the past years due to its potential for substantial capital savings and increased scope for cross-border trade, ...
    • Changes as first-class citizens: a research perspective on modern software tooling 

      Soetens, Quinten David; Robbes, Romain; Demeyer, Serge (Association for Computing Machinery, 2017)
      Software must evolve to keep up with an ever-changing context, the real world. We discuss an emergent trend in software evolution research revolving around the central notion that drives evolution: Change. By reifying ...
    • Biometric information fusion for web user navigation and preferences analysis: an overview 

      Slanzi, Gino; Pizarro, Gaspar; Velásquez, Juan D. (Elsevier, 2017)
      Throughout the years having knowledge of Web users' interests, navigational actions and preferences has gained importance due to the objectives of organizations and companies. Traditionally this field has been studied from ...
    • Asymptotically optimal encodings of range data structures for selection and Top-K queries 

      Grossi, Roberto; Iacono, John; Navarro, Gonzalo; Raman, Rajeev; Satti, S. Rao (Association for Computing Machinery, 2017)
      Given an array A[1, n] of elements with a total order, we consider the problem of building a data structure that solves two queries: (a) selection queries receive a range [i, j] and an integer k and return the position of ...
    • A parametric description of cities for the normative analysis of transport systems 

      Fielbaum, Andrés; Jara Díaz, Sergio; Gschwender Krause, Antonio (Springer, 2017)
      Urban transport systems analysis requires some explicit or implicit representation of the network, activity pattern and flows pattern of the city. When dealing with transit design in real systems, detailed descriptions of ...
    • A human-scale perspective on global warming: zero emission year and personal quotas 

      Fuente Stranger, Alberto de la; Rojas, Maisa; Mac Lean, Claudia (Public Library Science, 2017)
      This article builds on the premise that human consumption of goods, food and transport are the ultimate drivers of climate change. However, the nature of the climate change problem (well described as a tragedy of the ...
    • Sloan digital sky survey IV: mapping the milky way, nearby galaxies, and the distant universe 

      Blanton, Michael R.; Bershady, Matthew A.; Abolfathi, Bela; Muñoz Vidal, Ricardo Rodrigo; Santana, Felipe (IOP Publishing Ltd., 2017)
      We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands ...
    • Procesamiento y análisis de radio eco-sondaje (RES) sobre glaciares chilenos: relación entre volumen de hielo y área superficial 

      Huenante Gutiérrez, Jorge Andrés (Universidad de Chile, 2018)
      El Método RES es un método geofísico similar al método sísmico, pero que en lugar de ondas elásticas, se basa en la propagación de ondas electromagnéticas a través de antenas entre un emisor y un receptor, ambos normalmente ...
    • Problem solving as a professional development strategy for teachers: a case study with fractions 

      Perdomo Díaz, Josefa; Felmer Aichele, Patricio; Randolph, Valeria; González, Guillermo (Modestum Ltd., 2017)
      In this paper we present a professional development course designed to impact on teachers' mathematical knowledge for teaching fractions. The main features of the course are the use of i) problem solving activities related ...
    • Spatiotemporal chaos and two-dimensional dissipative rogue waves in Lugiato-Lefever model 

      Panajotov, Krassimir; Clerc Gavilán, Marcel; Tlidi, Mustapha (Springer, 2017)
      Driven nonlinear optical cavities can exhibit complex spatiotemporal dynamics. We consider the paradigmatic Lugiato-Lefever model describing driven nonlinear optical resonator. This model is one of the most-studied ...
    • Reconstruction of the microalga Nannochloropsis salina genome-scale metabolic model with applications to lipid production 

      Loira, Nicolás; Mendoza, Sebastián; Cortés, María Paz; Rojas, Natalia; Travisany, Dante; Di Genova, Alex; Gajardo, Natalia; Ehrenfeld, Nicole; Maass Sepúlveda, Alejandro (Biomed Central Ltd., 2017)
      Background: Nannochloropsis salina (= Eustigmatophyceae) is a marine microalga which has become a biotechnological target because of its high capacity to produce polyunsaturated fatty acids and triacylglycerols. It has ...
    • Owa-based aggregation operations in multi-expert MCDM model 

      Yusoff, Binyamin; Merigó Lindahl, José; Ceballos, David (Academy of Economic Studies, 2017)
      This paper presents an analysis of multi-expert multi-criteria decision making (ME-MCDM) model based on the ordered weighted averaging (OWA) operators. Two methods of modeling the majority opinion are studied as to aggregate ...
    • On the spectral analysis of residual stress in finite elasticity 

      Shariff, M. H. B. M.; Bustamante Plaza, Roger; Merodio, J. (Oxford university press, 2017)
      In the literature, residual stress problems are generally formulated using classical invariants despite most of them having an unclear physical meaning and not having experimental advantages. In this article, we give an ...
    • Modeling the multi-seasonal link between the hydrodynamics of a reservoir and itshydropower plant operation 

      Carpentier, Diego; Haas, Jannik; Olivares Alveal, Marcelo; Fuente Stranger, Alberto de la (MDPI AG, 2017)
      The hydrodynamics of many hydropower reservoirs are controlled by the operation of their power plant, but the associated water quality impact is often poorly understood. In particular, significant hydropeaking operations ...
    • Exploring dust around HD 142527 down to 0.025 (4au) using SPHERE/ZIMPOL 

      Avenhaus, H.; Quanz, S. P.; Schmid, H. M.; Dominik, C.; Stolker, T.; Ginski, C.; de Boer, J.; Szulagyi, J.; Garufi, A.; Zurlo, A.; Hagelberg, J.; Benisty, M.; Henning, T.; Menard, F.; Meyer, M. R. (IOP Publishing Ltd., 2017)
      We have observed the protoplanetary disk of the well-known young Herbig star HD 142527 using ZIMPOL polarimetric differential imaging with the very broad band (similar to 600-900 nm) filter. We obtained two data sets in ...