Browsing by Title Artículos de revistas
Now showing items 1046-1065 of 7549
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(PERGAMON-ELSEVIER SCIENCE LTD, 2012-01)This paper analyzes the socioeconomic stratification of achievement in the Chilean voucher system using a census of 4th and 8th graders, a multilevel methodology, and accounting for unobserved selectivity into school sector. ...
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(Frontiers Media, 2020)Fracture mechanics theory and seismological observations suggest that slip-rate is constantly changing during earthquake rupture, including dramatic acceleration from static conditions to high velocity sliding followed by ...
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(The American Astronomical Society, 2013)We present a detailed investigation of the variability of 428 C iv and 235 Si iv broad absorption line (BAL) troughs identified in multi-epoch observations of 291 quasars by the Sloan Digital Sky Survey-I/II/III. These ...
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(MDPI, 2021)The unprecedented size of the 2017 wildfires that burned nearly 600,000 hectares of central Chile highlight a need to better understand the climatic conditions under which large fires develop. Here we evaluate synoptic ...
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(Hindawi Publishing Corp., 2016)Piezoelectric cantilevered beams have been widely used as vibration-based energy harvesters. Nevertheless, these devices have a narrow frequency band and if the excitation is slightly different there is a significant drop ...
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(Royal Soc Chemistry, 2021)We present a new heteroditopic ligand (3pyCCMoid) that contains the typical skeleton of a curcuminoid (CCMoid) decorated with two 3-pyridyl groups. The coordination of 3pyCCMoid with ZnII centres results in a set of novel ...
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(ELSEVIER SCIENCE, 2005-12-31)A de Bruijn sequence over a finite alphabet of span n is a cyclic string such that all words of length n appear exactly once as factors of this sequence. We extend this definition to a subset of words of length n, ...
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(2005)A de Bruijn sequence over a finite alphabet of span n is a cyclic string such that all words of length n appear exactly once as factors of this sequence. We extend this definition to a subset of words of length n, ...
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(SCUOLA NORMALE SUPERIORE, 2016)We consider the problem {-Delta u + u = u(p) + lambda u(q) u > 0 in R-Nu(z) -> 0 as vertical bar z vertical bar -> infinity where p = p* + epsilon, with p* = N+2/N-2, while 1 < q < N+2/N-2 if N >= 4, and 3 < q < 5 if N = ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2008-03-01)In this work we consider the following problem [GRAPHICS] with N/(N - 2) < p < p* = (N + 2)/(N - 2) < q, N >= 3. We prove that if p is fixed, and q is close enough to the critical exponent p*, then there exists a ...
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(2000-10-30)We study the dynamics of bubbles in the one dimensional Cahn-Hilliard equation. For a gas of diluted bubbles we find ordinary differential equations describing their interaction which permits us to describe the ulterior ...
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(European Mathematical Society Publishing House, 2017)We investigate bubbling solutions for the nonlocal equation Aω s u = up, u > 0 in ω, under homogeneous Dirichlet conditions, where ω is a bounded and smooth domain. The operator As ω stands for two types of nonlocal ...
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(Elsevier, 2015)Let (M, g) be an n-dimensional compact Riemannian manifold without boundary and Gamma be a non-degenerate closed geodesic of (M, g). We prove that the supercritical problem -Delta(g)u + hu = u(n+1/n+3) (+/-) (epsilon), ...
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(Oxford Univ Press, 2016)In a hierarchical Universe clusters grow via the accretion of galaxies from the field, groups and even other clusters. As this happens, galaxies can lose and/or consume their gas reservoirs via different mechanisms, ...
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(Springer Science and Business Media Deutschland GmbH, 2019)© 2018, The Author(s).Studies examining urban health and the environment must ensure comparability of measures across cities and countries. We describe a data platform and process that integrates health outcomes together ...
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(Routledge, 2016)We analyse how to deal with the uncertainty before solving a stochastic optimization problem and we apply it to a forestry management problem. In particular, we start from historical data to build a stochastic process for ...
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(IEEE, 2017)The Domain Name System (DNS) has evolved to support the exponential growth of the Internet, by relying heavily on a highly distributed infrastructure. Nevertheless, trust between server must exist in order to guarantee ...
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(John Wiley and Sons Ltd, 2019)In this work, the adsorption of a type of cruciform system integrated by an anthracene central part and two side chains with a pyridine-vinyl structure (DPAC) was studied on plasmonic nanoparticles of silver and gold. The ...
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(Elsevier, 2016)We research the problem of building knowledge maps of graph-like information. There exist well-consolidated cartographic principles and techniques for mapping physical landscapes. However, we live in the digital era and ...
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(Springer, 2017)We present a decision support system to help plan preventive border patrols. The system represents the interaction between defenders and intruders as a Stackelberg security game (SSG) where the defender pools local resources ...
