Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 19873-19892 of 20501
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(Oxford University Press, 2013)We have used the Two-Micron All-Sky Survey and the Wide-field Infrared Survey Explorer to look for ultracool dwarfs that are part of multiple systems containing main-sequence stars.We cross-matched L dwarf candidates ...
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(BLACKWELL, 2006-02)The structures of the two title isomeric compounds, [Zn(C5H7O2)(2)(C12H10N4)](n), are built up around two non-equivalent symmetry centres, one of them at the cation position and the other bisecting the N-N bond in the ...
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(Universidad de Chile, 2014)En este trabajo se aborda el problema de encontrar soluciones regulares para algunas EDPs elípticas e hipo-elípticas no lineales y estudiar sus propiedades cualitativas. En una primera etapa, se considera la ecuación $$ -\Delta ...
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Two studies on the interplay between topological phases, robust edge states and bosonic excitations (Universidad de Chile, 2021)Esta tesis está compuesta por dos partes. En la parte I estudiamos el rol de la topología en la propagación de luz cuántica por una red fotónica con orden topológico no trivial. Nos enfocamos en el comportamiento de estados ...
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(IOP, 2021)The Cosmology Large Angular Scale Surveyor (CLASS) is a four-telescope array observing the largest angular scales (2 ℓ 200) of the cosmic microwave background (CMB) polarization. These scales encode information ...
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(SPRINGER/PLENUM PUBLISHERS, 2008-04)Three new coordination complexes of Zn(II) and Mn(II) have been synthesised using two different tridentate N,N,O donor hydrazone ligands, Hpbh and Hacpbh respectively. The complexes [Zn(pbh)2] (1) and [Zn (acpbh)2] (2) ...
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(Institute of Electrical and Electronics Engineers Inc., 2018)The Block Tree (BT) is a novel compact data structure designed to compress sequence collections. It obtains compression ratios close to Lempel-Ziv and supports efficient direct access to any substring. The BT divides the ...
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(2009)Term-partitioned indexes are generally inefficient for the evaluation of conjunctive queries, as they require the communication of long posting lists. On the other side, document-partitioned indexes incur in excessive ...
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(ELSEVIER, 2003-10)A two-dimensional dynamic model for bioleaching of secondary copper minerals from a pile has been developed. In the model. aeration of the pile is considered to be due to natural convection caused by the density gradient ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2006-12-01)We consider the problem of Ambrosetti-Prodi type [GRAPHICS] where Q is a bounded, smooth domain in R-2, phi(1) is a positive first eigenfunction of the Laplacian under Dirichlet boundary conditions and h is an element ...
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(2006-07-15)We consider the two-dimensional motion of a rigid structure immersed in an incompressible fluid governed by Navier-Stokes equations. The control force acts on a fixed subset of the fluid domain. We prove that our system ...
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Two-dimensional nanomaterials for the removal of pharmaceuticals from wastewater: a critical review (MDPI, 2021)The removal of pharmaceuticals from wastewater is critical due to their considerable risk on ecosystems and human health. Additionally, they are resistant to conventional chemical and biological remediation methods. ...
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(American Institute of Physics, 2020)Two-dimensional arrays of coupled waveguides or coupled microcavities allow us to confine and manipulate light. Based on a paradigmatic envelope equation, we show that these devices, subject to a coherent optical injection, ...
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(IEEE-Inst Electrical Electronics Engineers, 2021)The aim of Neuroevolution is to nd neural networks and convolutional neural network (CNN) architectures automatically through evolutionary algorithms. A crucial problem in neuroevolution is search time, since multiple ...
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Two-stage robust UC including a novel scenario-based uncertainty model for wind power applications (Elsevier, 2015)The complex processes involved in the determination of the availability of power from renewable energy sources, such as wind power, impose great challenges in the forecasting processes carried out by transmission system ...
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(IOP, 2020)The Cosmology Large Angular Scale Surveyor (CLASS) is a telescope array that observes the cosmic microwave background (CMB) over 75% of the sky from the Atacama Desert, Chile, at frequency bands centered near 40, 90, 150, ...
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(IOP Publishing, 2017-06-01)We investigate the star formation properties of a large sample of similar to 2300 X-ray-selected Type 2 Active Galactic Nuclei (AGNs) host galaxies out to z similar to 3 in the Chandra COSMOS Legacy Survey in order to ...
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(Universidad de Chile, 2020)El tipado de seguridad para control de ujos de información previene que información con- dencial sea liberada hacia canales públicos. La propiedad fundamental de control de ujos de información, conocida como ...
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(Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 2017)Information-flow security typing statically prevents confidential information to leak to public channels. The fundamental information flow property, known as noninterference, states that a public observer cannot learn ...
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(Elsevier, 2016)We construct new ancient compact solutions to the Yamabe flow. Our solutions are rotationally symmetric and converge, as t -> -infinity, to two self-similar complete noncompact solutions to the Yamabe flow moving in opposite ...
