Browsing by Title

Now showing items 63358-63377 of 92003

    • On the Functioning of the Southern Oscillation in the South American Sector. Part II: Upper-Air Circulation 
      Aceituno Gutiérrez, Patricio (AMER METEOROLOGICAL SOC, 1989-04)
      The functioning of the Southern Oscillation (SO) in the South American sector is analyzed with particular emphasis on the upper-air circulation anomalies. Throughout the year, but especially during austral summer, the ...
    • On the gas-phase electronic chemical potential of anions 
      Pérez Méndez, Claudio; Fuentealba, Claudio; Contreras Ramos, Renato (2009)
      In the process of evaluating intrinsic electronic chemical potentials and related properties of anions in the gas phase, positive values for this quantity often arise. We herein examine in detail this result in terms of ...
    • On the generation of totem pole emissions 
      Brinca, A. L.; Romeiras, F. J.; Gomberoff, L.; Marçal, M. H. (Blackwell Publishing Ltd, 2004)
      Understanding of the generation of electron cyclotron harmonic waves by almost monoenergetic perpendicular ion beams contributes to the interpretation of the totem pole (TP) emissions observed at the Earth's magnetopause ...
    • On the geometry of the action of finite linked groups: Isogenous Jacobian varieties via intermediate covering. 
      Bravo Rubio, Estefanía Nicole (Universidad de Chile, 2022)
      Let G be a nite group acting on a compact Riemann surface X. This action induces the so called group algebra decomposition of the corresponding Jacobian variety JX. Moreover, consider a subgroup H G of G and ...
    • On the graphene Hamiltonian operator 
      Conca Rosende, Carlos; Orive, R.; San Martín Aristegui, Jaime; Solano, V. (Springer, 2020)
      We solve a second-order elliptic equation with quasi-periodic boundary conditions defined on a honeycomb lattice that represents the arrangement of carbon atoms in graphene. Our results generalize those found by Kuchment ...
    • On the group algebra decomposition of a Jacobian Variety 
      Jimenez Palma, Leslie (Universisdad de Chile, 2014)
    • On the group algebra decomposition of a Jacobian variety 
      Jimenez, Leslie (Springer, 2016)
      Given a compact Riemann surface X with an action of a finite group G, the group algebra provides an isogenous decomposition of its Jacobian variety JX, known as the group algebra decomposition of JX. We obtain a method to ...
    • On the heterogeneous spread of COVID-19 in Chile 
      Freire Flores, Danton Igor; Llanovarced Kawles, Nyna Koyllor; Sánchez Daza, Anamaría; Olivera Nappa, Alvaro María (Elsevier, 2021)
      Non-pharmaceutical interventions (NPIs) have played a crucial role in controlling the spread of COVID-19. Nevertheless, NPI efficacy varies enormously between and within countries, mainly because of population and behavioral ...
    • On the hodological criterion for homology 
      Faunes, Macarena; Botelho, João Francisco; Galleguillos, Patricio Ahumada; Mpodozis Marín, Jorge (Frontiers Research Foundation, 2015)
      © 2015 Faunes, Francisco Botelho, Ahumada Galleguillos and Mpodozis. Owen's pre-evolutionary definition of a homolog as "the same organ in different animals under every variety of form and function" and its redefinition ...
    • On the identifiability of a rigid body moving in a stationary viscous fluid 
      Conca Rosende, Carlos; Schwindt, Erica L.; Takahashi, Takéo (2012)
      This paper is devoted to a geometrical inverse problem associated with a fluid– structure system. More precisely, we consider the interaction between amoving rigid body and a viscous and incompressible fluid. Assuming a ...
    • On the identification of a rigid body immersed in a fluid: A numerical approach 
      Alvarez, Catalina; Conca Rosende, Carlos; Lecaros, Rodrigo; Ortega Palma, Jaime (Elsevier, 2008-11)
      This work deals with the study of an inverse geometric problem in fluid mechanics. In particular, we are interested in the numerical reconstruction of a rigid body which is immersed in a cavity, filled with a fluid, by ...
    • On the identification of a single body immersed in a Navier-Stokes fluid 
      Doubova, Anna; Fernández Cara, Enrique; Ortega Palma, Jaime (2007)
      In this work we consider the inverse problem of the identification of a single rigid body immersed in a fluid governed by the stationary Navier-Stokes equations. It is assumed that friction forces are known on a part of ...
    • On the identity of Liolaemus Nigromaculatus Wiegmann, 1834 (Iguania, Liolaemidae) and correction of its ... 
      Troncoso Palacios, Jaime; Garin, Carlos F. (Pensoft Publishers, 2013)
      In the current study, we review the taxonomic status of Liolaemus nigromaculatus. Despite being the nominal species of the nigromaculatus group and being the second species of the genus Liolaemus that was described, this ...
    • On the image content of a web segment: Chile as a case study 
      Jaimes, A.; Ruiz del Solar, Javier; Verschae, Rodrigo; Baeza Yates, Ricardo; Castillo, C.; Yaksic, D.; Davis, E. (Rinton Press, 2004)
      We propose a methodology to characterize the image contents of a web segment, and we present an analysis of the contents of a segment of the Chilean web (.CL domain). Our framework uses an efficient web-crawling architecture, ...
    • On the Importance of the Arrival of New Information 
      Chumacero Escudero, Rómulo (Universidad de Chile. Facultad de Economía y Negocios, 2010-12)
      This paper develops a framework for evaluating the importance of the arrival of new information for forecasting, estimation, and decision making. By fusing known and recently developed statistical tests and concepts, the ...
    • On the improvement of positioning accuracy in WiFi-based wireless network using correntropy-based kernel ... 
      Xue, Nan; Luo, Xiong; Wu, Jinsong; Wang, Weiping; Wang, Long (Wiley Blackwell, 2019)
      Currently, we have witnessed the rapid development of data-driven machine learning methods, which have achieved very effective results in communication systems. Kernel learning is a typical nonlinear learning method in the ...
    • On the improvement of the electroluminescent signal of organic light emitting diodes by the presence of an ... 
      Bernède, J. C.; Martínez Concha, Francisco; Neculqueo, G.; Cattin, L. (WILEY-V C H VERLAG GMBH, 2008-01)
      The electroluminescent (EL) signal of organic light emitting diodes (OLEDs) based on simple "hole transporting layer/electron transporting layer" (HTL/ETL) structures has been studied as a function of the anode/HTL interface, ...
    • On the incidence of strong MgII absorbers along gamma-ray burst sight lines 
      Prochter, Gabriel E.; Prochaska, Jason X.; Chen, Hsiao-Wen; Bloom, Joshua S.; Dessauges-Zavadsky, Miroslava; Foley, Ryan J.; López Morales, Sebastián; Pettini, Max; Dupree, Andrea K.; Guhathakurta, P. (UNIV CHICAGO PRESS, 2006-09-10)
      We report on a survey for strong ( rest equivalent width W-r >= 1 angstrom) intervening Mg II systems along the sight lines to long-duration gamma-ray bursts (GRBs). The GRB spectra that comprise the survey have a heterogeneous ...
    • On the increase of sensitivity and specificity in the oscillopolarography of uranium 
      Morales, Alfonso; González V., Flora (Elsevier, 1967)
      The behaviour of uranium in both organic and inorganic supporting electrolytes is examined, and also the influence of complexing agents on the incision in the curve, dE/dt =f(E). The addition of TEA to supporting electrolytes ...
    • On the independence of strain invariants of two preferred direction nonlinear elasticity 
      Shariff, M. H. B. M.; Bustamante Plaza, Roger (Elsevier, 2015)
      It is often assumed in the literature that the nine classical strain invariants, which are used to characterize the strain energy of a compressible anisotropic elastic solid with two preferred non-orthogonal directions are ...