Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 13853-13872 of 20437

    • A note on tilings and translation surfaces 
      Gambaudo, Jean Marc (CAMBRIDGE UNIV PRESS, 2006-02)
      Consider a tiling T of the two-dimensional Euclidean space made with copies up to translation of a finite number of polygons meeting each other full edge to full edge. In this paper, we prove that, associated with T, there ...
    • A Note on Total and List Edge-Colouring of Graphs of Tree-Width 3 
      Lang, Richard (Springer, 2016)
      It is shown that Halin graphs are -edge-choosable and that graphs of tree-width 3 are -edge-choosable and -total-colourable.
    • NOVA V2362 CYGNI (NOVA CYGNI 2006): SPITZER, SWIFT, AND GROUND-BASED SPECTRAL EVOLUTION 
      Lynch, David K.; Woodward, Charles E.; Gehrz, Robert; Helton, L. Andrew; Rudy, Richard J.; Russell, Ray W.; Pearson, Richard; Venturini, Catherine C.; Mazuk, S.; Rayner, John; Ness, Jan-Uwe; Starrfield, Sumner; Wagner, R. Mark; Osborne, Julian P.; Page, Kim; Puetter, Richard C.; Perry, R. Brad; Schwarz, Greg; Vanlandingham, Karen; Black, John; Bode, Michael; Evans, Aneurin; Geballe, Thomas; Greenhouse, Matthew; Hauschildt, Peter; Krautter, Joachim; Liller, William; Lyke, James; Truran, Jim; Kerr, T.; Eyres, S. P. S.; Shore, Steven N. (IOP PUBLISHING LTD, 2008-11)
      Nova V2362 Cygni has undergone a number of very unusual changes. Ground-based spectroscopy initially revealed a normal sequence of events: the object faded and its near-infrared emission lines gradually shifted to higher ...
    • A novel blind deconvolution de-noising scheme in failure prognosis 
      Zhang, Bin; Khawaja, Taimoor; Patrick, Romano; Vachtsevanos, George; Orchard Concha, Marcos; Saxena, Abhinav (2010)
      With increased system complexity, condition-based maintenance (CBM) becomes a promising solution for system safety by detecting faults and scheduling maintenance procedures before faults become severe failures resulting ...
    • Novel channel hopping sequence approaches to rendezvous for VANETs 
      Montejo Sánchez, Samuel; Azurdia Meza, César; Bolufé, Sandy; Céspedes Umaña, Sandra; Soto, Ismael; Souza, Richard Demo (IEEE, 2017)
      Vehicularad hocnetworks (VANETs) have emergedas a paradigm for sharing information among vehicles andinfrastructure that has the potential to provide road safety andtravellers comfort. The bandwidth limitation is one of ...
    • A novel deterministic approach for aspect-based opinion mining in tourism products reviews 
      Marrese Taylor, Edison; Velásquez, Juan D.; Bravo Márquez, Felipe (Elsevier, 2014)
      This work proposes an extension of Bing Liu’s aspect-based opinion mining approach in order to apply it to the tourism domain. The extension concerns with the fact that users refer differently to different kinds of products ...
    • The novel ligand 4 '-phenyl-3,2 ':6 ',3 ''-terpyridine (L) and the supramolecular structure of the dinuclear ... 
      Granifo, Juan; Vargas, Moisés; Garland, María Teresa; Ibáñez, Andrés; Gaviño, Rubén; Baggio, Ricardo (ELSEVIER, 2008-11)
      The new terpyridyl ligand 4'-phenyl-3,2':6',3 ''-terpyridine (L) reacts with Zn(acac)(2) to produce the dizinc complex [Zn-2(mu-L)(acac)(4)] center dot H2O (1) (acac = acetylacetonato). The analysis of the crystal structure ...
    • A Novel Methodology for Assessing the Fall Risk Using Low-Cost and Off-the-Shelf Devices 
      Loncomilla, Patricio; Tapia, Claudio; Daud Albasini, Omar; Ruíz del Solar San Martín, Javier (IEEE, 2014)
      Early detection of fall risk can reduce health costs associated with surgery, rehabilitation, imaging studies, hospitalizations, and medical evaluations. This paper proposes a measurement-focused study oriented to ...
    • Novel methodology for selecting representative operating points for the TNEP 
      Álvarez, Ricardo; Moser, Albert; Rahmann Zúñiga, Claudia (IEEE, 2017)
      As part of transmission network expansion planning(TNEP), a technical and economical assessment of several planningalternatives must be performed in order to ensure fulfillment of thenetwork security criteria and to estimate ...
    • A novel model for biofilm growth and its resolution by using the hybrid immersed interface-level set method 
      Cumsille, Patricio; Asenjo de Leuze, Juan; Conca Rosende, Carlos (Elsevier, 2014)
      In this work we propose a new model to simulate biofilm structures (‘‘finger-like’’, as well as, compact structures) as a result of microbial growth in different environmental conditions. At the same time, the numerical ...
    • Novel multilayer extreme learning machine as a massive MIMO receiver for millimeter wave communications 
      Carrera, Diego Fernando; Vagas Rosales, César; Zabala Blanco, David; Yungaicela Naula, Noe M; Azurdia Meza, César Augusto; Mohamed, Marey; Ali Dehghan, Firoozabadi (IEEE, 2022)
      Wireless communication systems working in millimeter-wave (mmWave) frequency bands offer higher bandwidths than traditional radio frequency schemes. This technology allows multibeam steering and data multiplexing with the ...
    • Novel paramagnetic-luminescent building blocks containing manganese(II) and anthracene-based curcuminoids 
      Menelaou, Melita; Weyhermüller, Thomas; Soler Jauma, Mónica; Aliaga Alcalde, Nuria (Elsevier, 2013)
      In an effort to study innovative multifunctional molecular materials, two new coordination compounds have been designed containing MnII as a metallic source and a specific curcuminoid called 9Accm as a chelating ligand. ...
    • Novel route to synthesize CuO nanoplatelets 
      Zárate Aliaga, Ramón; Hevia, F.; Fuentes, S.; Fuenzalida, V. M.; Zúñiga Páez, Alejandro (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2007-04)
      A new synthesis route to obtain high-purity cupric oxide, CuO, using the hydrothermal reaction of copper sulfide and a NaOH solution in an oxygen atmosphere has been developed. The synthesized products showed nanoplatelet-like ...
    • A novel, fully automated pipeline for period estimation in the EROS 2 data set 
      Protopapas, Pavlos; Huijse Heise, Pablo Andrés; Estévez Valencia, Pablo; Zegers, Pablo; Principe, José; Marquette, Jean Baptiste (IOP Publishing, 2015)
      We present a new method to discriminate periodic from nonperiodic irregularly sampled light curves. We introduce a periodic kernel and maximize a similarity measure derived from information theory to estimate the periods ...
    • Nowcasting earthquake damages with Twitter 
      Mendoza, Marcelo; Poblete Labra, Bárbara; Valderrama, Ignacio (SpringerOpen, 2019)
      © 2019, The Author(s). The Modified Mercalli intensity scale (Mercalli scale for short) is a qualitative measure used to express the perceived intensity of an earthquake in terms of damages. Accurate intensity reports are ...
    • NP-completeness results for edge modification problems 
      Burzyn, Pablo; Bonomo, Flavia; Durán Maggiolo, Guillermo (ELSEVIER, 2006-08-15)
      The aim of edge modification problems is to change the edge set of a given graph as little as possible in order to satisfy a certain property. Edge modification problems in graphs have a lot of applications in different ...
    • NPARSEC: NTT Parallaxes of Southern Extremely Cool objects. Goals, targets, procedures and first results 
      Smart, R. L.; Tinney, C. G.; Bucciarelli, B.; Marocco, F.; Abbas, U.; Andrei, A.; Bernardi, G.; Burningham, B.; Cardoso, C.; Costa Hechenleitner, Edgardo; Crosta, M. T.; Daprá, A.; Day Jones, A.; Goldman, B.; Jones, H. R.; Lattanzi, M. G.; Leggett, S. K.; Lucas, P.; Méndez Bussard, René Alejandro; Penna, J. L.; Pinfield, D.; Smith, L.; Sozzetti, A.; Vecchiato, A. (Oxford University Press on behalf of the Royal Astronomical Society, 2013)
      The discovery and subsequent detailed study of T dwarfs have provided many surprises and pushed the physics and modelling of cool atmospheres in unpredicted directions. Distance is a critical parameter for studies of ...
    • Nucleación de cobre por electrodeposición sobre TIO2 [001] 
      Olavarría Contreras, Ignacio José (Universidad de Chile, 2013)
      Este trabajo analiza el problema de la nucleación de cobre en el proceso de electrodepo- sición, la formación de estructuras bi y tridimensionales en la superficie de un sustrato, de manera de determinar las características ...
    • Nuclear halo structure from quasielastic charge-exchange reactions 
      Arellano Sepúlveda, Hugo; Love, W. G. (ELSEVIER SCIENCE BV, 2005-06-13)
      Neutron and proton densities in the nuclear periphery are investigated within (p,n) charge-exchange isobar transitions. For this purpose we have developed parameter-free optical potentials (1)) with a detailed treatment ...
    • The Nuclear Near-Infrared Spectral Properties of Nearby Galaxies 
      Mason, R. E.; Rodríguez-Ardila, A.; Martins, L.; Riffel, R.; González Martín, O.; Ramos Almeida, C.; Ruschel Dutra, D.; Ho, L. C.; Thanjavur, K.; Flohic, H.; Alonso Herrero, A.; Lira Teillery, Paulina; McDermid, R.; Riffel, R. A.; Schiavon, R. P.; Winge, C.; Hoenig, M. D.; Perlman, E. (2015-03)
      We present spectra of the nuclear regions of 50 nearby (D = 1–92 Mpc, median = 20 Mpc) galaxies of morphological types E to Sm. The spectra, obtained with the Gemini Near-IR Spectrograph on the Gemini North telescope, ...