Browsing Artículos 2017 by Title
Now showing items 1-20 of 30
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Un camino hacia la derivada : secuencia de actividades para construir el concepto de velocidad instantánea empleando la velocidad media
(2017)La siguiente propuesta tiene por objetivo introducir conceptos básicos del análisis diferencial. Está destinada a estudiantes de los últimos años de nivel secundario, de nivel terciario o de los primeros años de nivel ... -
Climatic projections of lightning in southeastern Brazil using CMIP5 models in RCP’s scenarios 4.5 and 8.5
(2017)Given the high and increasing lightning incidence over the Southeast of Brazil and the various impacts that this phenomenon generates to society, there is a growing need in predicting its occurrence, in order to minimize ... -
Comparative studies of hybrid functional materials based on different carbon structures decorated with nano-magnetite. Suitable application as platforms for enzyme-free electrochemical sensing of hydrogen peroxide
(2017)A simple synthesis procedure was designed to obtain hybrid materials based on graphite structures and magnetite nanoparticles. These new structures were characterized using different techniques. The results show that the ... -
d-Dimensional KPZ equation as a stochastic gradient flow in an evolving landscape : interpretation and time evolution of its generating functional
(2017)The deterministic KPZ equation has been recently formulated as a gradient flow. Its non-equilibrium analog of a free energy—the “non-equilibrium potential” Φ[h], providing at each time the landscape where the stochastic ... -
Distinguishability notion based on Wootters statistical distance : application to discrete maps
(2017)We study the distinguishability notion given by Wootters for states represented by probability density functions. This presents the particularity that it can also be used for defining a statistical distance in chaotic ... -
Effects of rainfall on Culex mosquito population dynamics
(2017)The dynamics of a mosquito population depends heavily on climatic variables such as temperature and precipitation. Since climate change models predict that global warming will impact on the frequency and intensity of ... -
Entanglement generation through particle detection in systems of identical fermions
(2017)We investigate the generation of entanglement in systems of identical fermions through a process involving particle detection, focusing on the implications that this kind of processes have for the concept of entanglement ... -
Escaping the trap of ’blocking’ : a kinetic model linking economic development and political competition
(2017)In this paper we present a kinetic model with stochastic game-type interactions, analyzing the relationship between the level of political competition in a society and the degree of economic liberalization. The above issue ... -
Estudio experimental del efecto de la turbulencia sobre el espectro de tamaño de gotas de nube
(2017)El propósito de este trabajo es estudiar empíricamente el efecto sobre el espectro de tamaños de gotas en una nube cálida, sometida a perturbaciones que afectan el movimiento de la parcela de aire en donde se encuentra. ... -
Explaining coexistence of nitrogen fixing and non-fixing rhizobia in legume-rhizobia mutualism using mathematical modeling
(2017)In the mutualism established between legumes and soil bacteria known as rhizobia, bacteria from soil infect plants roots and reproduce inside root nodules where they fix atmospheric N2 for plant nutrition, receiving ... -
The fractal organization of ultradian rhythms in avian behavior
(2017)Living systems exhibit non-randomly organized biochemical, physiological, and behavioral processes that follow distinctive patterns. In particular, animal behavior displays both fractal dynamics and periodic rhythms yet ... -
Intercalation stage dependence of core electronic excitations in Li-intercalated graphite from inelastic X-ray scattering
(2017)Li and C 1s core-electron excitation spectra of electrochemically prepared stage-II and stage-I lithiated graphite were investigated by means of inelastic X-ray scattering spectroscopy. The near-edge structure is discussed, ... -
The lattice of congruences of a finite line frame
(2017)Let F = <F, R> be a finite Kripke frame. A congruence of F is a bisimulation of F that is also an equivalence relation on F. The set of all congruences of F is a lattice under the inclusion ordering. In this article we ... -
Lithium dual uptake anode materials : crystalline Fe3O4 nanoparticles supported over graphite for lithium-ion batteries
(2017)Graphite, the usual anode material for current technology of lithium ion batteries (LIB), has great advantages and its processing is widely known and industrially feasible. For improving the anode’s capacity, recent research ... -
Looking for fairer societies, can hard sciences help? : Comment on “Modeling human behavior in economics and social science” by Marina Dolfin, Leone Leonida and Nisrine Outada
(2017)Comment on "Modeling human behavior in economics and social science" by Marina Dolfin, Leone Leonida and Nisrine Outada. -
A methodology to determine natural radioactivity by γ spectrometry without using calibrated standard samples
(2017)When determining the radioactivity in materials by γ spectra, different processes are involved difficulting the fit. Besides, calibrated standard samples are necessary. In this work we propose a methodology to determine ... -
Microstructure of as-cast single and twin roller melt-spun Ni 2MnGa ribbons
(2017)Stoichiometric Ni2MnGa alloys are processed by two rapid solidification techniques - single-roller (SR) and twin-roller (TR) melt spinning -, and the resulting microstructures and magnetic properties determined. Samples ... -
Una mirada sobre el operativo aprender
(2017)El artículo presenta algunas reflexiones en torno al operativo de evaluación "Aprender". -
Modeling polymeric gels : the role of chain flexibility on the structure of physical gels
(2017)Using molecular dynamics simulations and a simple model for chain molecules we study the gel formation under different conditions. The main characteristic of the model is the short attractive range of the non-bonding ... -
Positivity results for indefinite sublinear elliptic problems via a continuity argument
(2017)We establish a positivity property for a class of semilinear elliptic problems involving indefinite sublinear nonlinearities. Namely, we show that any nontrivial nonnegative solution is positive for a class of problems the ...