Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 9192-9211 of 20579
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(Wiley, 2020)The exchange rate is one of the most important prices in open economies. Exchange rate volatility (ERV) has been studied in terms of its measurement, forecast and impact and relationship with other variables. This article ...
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(Elsevier, 2014)In aspect-oriented programming (AOP) languages, advice evaluation is usually considered as part of the base program evaluation. This is also the case for certain pointcuts, such as if pointcuts in AspectJ, or simply all ...
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(Universidad de Chile, 2020)Given the increasing demand for energy and the challenges posed by climate change, the need for a clean, renewable and dispatchable source of energy is greater than ever. Chile has an outstanding solar potential and ...
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(Universidad de Chile, 2017)The present report contains an exergy analysis of the Chilean society in 2013. Wall s approach was taken to assess the exergy efficiency of four main economic sectors: mining, manufacturing, transportation, and ...
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(Elsevier, 2019)A detailed exergy cost and thermoeconomic analysis applied to a Rankine Cycle (RC) coupled to a Multi-Effect Distillation (MED) plant was performed. The aim of this work is to identify the impact of design and operating ...
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(Elsevier Ltd, 2019)An exergy cost assessment of integrated solar multi-generation schemes, which includes cogeneration, trigeneration, and polygeneration schemes, for the joint production of electricity, fresh water, cooling, and process ...
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(International Solar Energy Society, 2017)A thermoeconomic analysis of a solar polygeneration plant for the joint production of electricity, fresh water, cooling, and process heat is carried out, in order to analyze in depth the process of exergy cost formation ...
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(Universidad de Chile, 2014)Se entenderá por calidad de servicio el conjunto de propiedades y estándares normales que, conforme la Ley y el Reglamento Eléctrico son inherentes a la actividad de distribución concesionada, y constituyen las condiciones ...
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(SIAM Publications, 2015)Variational problems under uniform quasi-convex constraints on the gradient are studied. Our technique consists in approximating the original problem by a one-parameter family of smooth unconstrained optimization problems. ...
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(AMER MATHEMATICAL SOC, 2005)We prove global existence of nonnegative solutions to the singular parabolic equation ut - Deltau+chi ({u> 0})(- u(-beta) +lambdaf(u)) = 0 in a smooth bounded domain Omega subset of R-N with zero Dirichlet boundary condition ...
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Existence and asymptotic behavior of solutions to semilinear elliptic problems via reduction methods (Universidad de Chile, 2012)Este trabajo se concentra principalmente en estudiar el método de reducción de Lyapunov-Schmidt y sus aplicaciones al estudio de existencia de soluciones a problemas semilineales elípticos. En particular, utilizamos ...
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Existence and multiplicity results for degenerate elliptic equations with dependence on the gradient (2007)We study the existence of positive solutions for a class of degenerate nonlinear elliptic equations with gradient dependence. For this purpose, we combine a blowup argument, the strong maximum principle, and Liouville-type ...
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Existence and nonexistence of positive solutions to some fully nonlinear equation in one dimension (Academic Press Inc., 2018)In this paper, we consider the existence (and nonexistence) of solutions to −Mλ,Λ ±(u″)+V(x)u=f(u)inR where Mλ,Λ + and Mλ,Λ − denote the Pucci operators with 0<λ≤Λ<∞ V(x) is a bounded function, f(s) is a continuous ...
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(Texas State Univ, 2015)This work concerns the existence of almost periodic solutions for certain di erential equations with piecewise constant arguments. The coef- cients of these equations are almost periodic and the equation can be seen as ...
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(Universidad de Chile, 2022)We study a Newtonian model, that allows us to describe some phenomena in stellar dynamics. This model is described by a partial differential equation known as the Vlasov equation or the Liouville equation, whose solutions ...
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(2011-07)We study the existence of local and global mild solutions of the fractional-order differential equations in an arbitrary Banach space by using the semigroup theory and the Schauder fixed-point theorem. We also give some ...
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(Society for Industrial and Applied Mathematics, 2013)For a boundedly generated drop [a,E] (a property which holds, for instance, whenever E is bounded), where a belongs to a real Banach space X and E ⊂ X is a nonempty convex set, we show that for every lower semicontinuous ...
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(Elsevier, 2020)This paper proposes an omega-periodic version of the Ellermeyer model of delayed chemostat. We obtain a sufficient condition ensuring the existence of a positive omega-periodic solution. Our proof is based on the application ...
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(Taylor & Francis, 2020)A quasi-equilibrium problem is an equilibrium problem where the constraint set does depend on the reference point. It generalizes important problems such as quasi-variational inequalities and generalized Nash equilibrium ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2010-12-01)In this paper, we study the motion of rigid bodies in a perfect incompressible fluid. The rigid-fluid system fils a bounded domain in R3. Adapting the strategy from Bourguignon and Brezis [1], we use the stream lines of ...