Papers by Maria Nubia Quevedo Cubillos
REFCalE: Revista Electrónica Formación y Calidad Educativa. ISSN 1390-9010, Aug 31, 2019
El objetivo de la investigacion se centro en la evaluacion del clima organizacional en los colect... more El objetivo de la investigacion se centro en la evaluacion del clima organizacional en los colectivos de anos academicos para finalmente justificar la necesidad de fortalecer sus procesos organizacionales. El estudio se centra en los procesos organizacionales, se valoran las dimensiones de relaciones interpersonales, cohesion de grupo y motivacion. Se realizo con un enfoque esencialmente cuantitativo, no experimental y ex post facto, sin intentar modificar las dimensiones y variables investigadas, para determinar la percepcion que tienen los profesores sobre el clima organizacional en estos colectivos y establecer relaciones entre los resultados obtenidos. Se obtuvo como resultado que la dimension de relaciones interpersonales es desfavorable, incidiendo notablemente en esta dimension la percepcion desfavorable de la variable companerismo y colaboracion; asi como, la variable comunicacion. Las dimensiones de cohesion en el grupo y motivacion clasificaron como favorables.
Sigma Journal of Engineering and Natural Sciences, Oct 5, 2021
In this article we present a second-order differential equation in the framework of the derivativ... more In this article we present a second-order differential equation in the framework of the derivative N, and various qualitative properties of the solutions are studied, firstly conditions are obtained under which the equation under study has a non-continuity solution at infinity. Later we study the conditions for the prolongation of the solutions and their oscillation.
Issues of Analysis
In this work, we use weighted integrals to obtain new integral inequalities of the Simpson type f... more In this work, we use weighted integrals to obtain new integral inequalities of the Simpson type for the class of pℎ, , q-convex functions of the second type. In the work we show that the obtained results include some known from the literature, as particular cases.
The shape of income distributions has been represented by several functional forms, including pow... more The shape of income distributions has been represented by several functional forms, including power law, gamma, exponential and even parabolic function. We follow the approach proposed in econophysics for fitting an exponential of Boltzmann-Gibbs to the lower tail of the Colombian income distribution and a Pareto function to the top income segment, and give possible explanations from the perspective of econophysics and economics. We found that, even though the approach holds relatively well in Colombian case, there is an important deviation in the surroundings of the low-middle class level of income, which suggests that other functions might be more accurate.
We use the Legendre invariant formalism of geometrothermodynamics to investigate the geometric pr... more We use the Legendre invariant formalism of geometrothermodynamics to investigate the geometric properties of the equilibrium space of a spherically symmetric phantom black hole with electric charge and dilaton. We find that at certain points of the equilibrium space, the thermodynamic curvature is characterized by the presence of singularities that are interpreted as phase transitions. We also investigate the phase transition structure by using the standard approach of black hole thermodynamics based upon the analysis of the heat capacity and response functions. We show compatibility between the two approaches. In addition, a new type of phase transition is found which is due to the presence of phantom energy and corresponds to a transition between black hole states with different stability properties.
The European Physical Journal C, 2016
We show that to investigate the thermodynamic properties of charged phantom spherically symmetric... more We show that to investigate the thermodynamic properties of charged phantom spherically symmetric anti-de Sitter black holes, it is necessary to consider the cosmological constant as a thermodynamic variable so that the corresponding fundamental equation is a homogeneous function defined on an extended equilibrium space. We explore all the thermodynamic properties of this class of black holes by using the classical physical approach, based upon the analysis of the fundamental equation, and the alternative mathematical approach as proposed in geometrothermodynamics. We show that both approaches are compatible and lead to equivalent results.
We present the basic mathematical elements of geometrothermodynamics which is a formalism develop... more We present the basic mathematical elements of geometrothermodynamics which is a formalism developed to describe in an invariant way the thermodynamic properties of a given thermodynamic system in terms of geometric structures. First, in order to represent the first law of thermodynamics and the general Legendre transformations in an invariant way, we define the phase manifold as a Legendre invariant Riemannian manifold with a contact structure. The equilibrium manifold is defined by using a harmonic map which includes the specification of the fundamental equation of the thermodynamic system. Quasi-static thermodynamic processes are shown to correspond to geodesics of the equilibrium manifold which preserve the laws of thermodynamics. We study in detail the equilibrium manifold of the ideal gas and the van der Waals gas as concrete examples of the application of geometrothermodynamics.
Journal of Thermodynamics, 2011
We formulate the thermodynamics of economic systems in terms of an arbitrary probability distribu... more We formulate the thermodynamics of economic systems in terms of an arbitrary probability distribution for a conserved economic quantity. As in statistical physics, thermodynamic macroeconomic variables emerge as the mean value of microeconomic variables, and their determination is reduced to the computation of the partition function, starting from an arbitrary function. Explicit hypothetical examples are given which include linear and nonlinear economic systems as well as multiplicative systems such as those dominated by a Pareto law distribution. It is shown that the macroeconomic variables can be drastically changed by choosing the microeconomic variables in an appropriate manner. We propose to use the formalism of phase transitions to study severe changes of macroeconomic variables.
We formulate the thermodynamics of economic systems in terms of an arbitrary probability distribu... more We formulate the thermodynamics of economic systems in terms of an arbitrary probability distribution for a conserved economic quantity. As in statistical physics, thermodynamic macroeconomic variables emerge as the mean value of microeconomic variables, and their determination is reduced to the computation of the partition function, starting from an arbitrary function. Explicit hypothetical examples are given which include linear and nonlinear economic systems as well as multiplicative systems such as those dominated by a Pareto law distribution. It is shown that the macroeconomic variables can be drastically changed by choosing the microeconomic variables in an appropriate manner. We propose to use the formalism of phase transitions to study severe changes of macroeconomic variables.
Recently, in econophysics, it has been shown that it is possible to analyze economic
systems as e... more Recently, in econophysics, it has been shown that it is possible to analyze economic
systems as equilibrium thermodynamic models. We apply statistical thermodynamics
methods to analyze income distribution in the Colombian economic
system. Using the data obtained in random polls, we show that income distribution
We use the Legendre invariant formalism of geometrothermodynamics to investigate the geometric pr... more We use the Legendre invariant formalism of geometrothermodynamics to investigate the geometric properties of the equilibrium space of a spherically symmetric phantom black hole with electric charge and dilaton. We find that at certain points of the equilibrium space, the thermodynamic curvature is characterized by the presence of singularities that are interpreted as phase transitions.
We also investigate the phase transition structure by using the standard approach of black hole thermodynamics based upon the analysis of the heat capacity and response functions. We show compatibility between the two approaches. In addition, a new type of phase transition is found
which is due to the presence of phantom energy and corresponds to a transition between black hole states with different stability properties.
We show that to investigate the thermodynamic properties of charged phantom spherically symmetric... more We show that to investigate the thermodynamic properties of charged phantom spherically symmetric anti-de Sitter black holes, it is necessary to consider the cosmological constant as a thermodynamic variable so that the corresponding fundamental equation is a homogeneous function defined on an extended equilibrium space. We explore all the ther-modynamic properties of this class of black holes by using the classical physical approach, based upon the analysis of the fundamental equation, and the alternative mathematical approach as proposed in geometrothermodynamics. We show that both approaches are compatible and lead to equivalent results.
We present the basic mathematical elements of geometrothermodynamics which is a formalism
develop... more We present the basic mathematical elements of geometrothermodynamics which is a formalism
developed to describe in an invariant way the thermodynamic properties of a given thermodynamic
system in terms of geometric structures. First, in order to represent the first law of thermodynamics
and the general Legendre transformations in an invariant way, we define the phase manifold as a
Legendre invariant Riemannian manifold with a contact structure. The equilibrium manifold is
defined by using a harmonic map which includes the specification of the fundamental equation of
the thermodynamic system. Quasi-static thermodynamic processes are shown to correspond to
geodesics of the equilibrium manifold which preserve the laws of thermodynamics. We study in
detail the equilibrium manifold of the ideal gas and the van der Waals gas as concrete examples of
the application of geometrothermodynamics.
by Diego Alfonso Pacheco Saenz, Natalia P., Luis Perez, Sandra Viviana Gomez Mora, Juan Dios Urbina, Tania Julieth Plazas Merchan, Baltazar Ramón, Alexander Guio, Ana Rodriguez, Patricia Perry, John Bacares, Gabriela Net, Yudi Andrea Ortiz Rocha, José Raúl Panqueva Sánchez, Tulia Esther Rivera Flórez, Edgar Alberto Guacaneme SuÁrez, Camargo Leonor, Maria Nubia Quevedo Cubillos, and Paola Cardenas Se autoriza la reproducción total o parcial de algún artículo, previa cita a la fuente: Perry, P.... more Se autoriza la reproducción total o parcial de algún artículo, previa cita a la fuente: Perry, P. (Ed.) (2015). Memorias del Encuentro de Geometría y sus Aplicaciones, 22. Bogotá, Colombia: Universidad Pedagógica Nacional.
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Papers by Maria Nubia Quevedo Cubillos
systems as equilibrium thermodynamic models. We apply statistical thermodynamics
methods to analyze income distribution in the Colombian economic
system. Using the data obtained in random polls, we show that income distribution
We also investigate the phase transition structure by using the standard approach of black hole thermodynamics based upon the analysis of the heat capacity and response functions. We show compatibility between the two approaches. In addition, a new type of phase transition is found
which is due to the presence of phantom energy and corresponds to a transition between black hole states with different stability properties.
developed to describe in an invariant way the thermodynamic properties of a given thermodynamic
system in terms of geometric structures. First, in order to represent the first law of thermodynamics
and the general Legendre transformations in an invariant way, we define the phase manifold as a
Legendre invariant Riemannian manifold with a contact structure. The equilibrium manifold is
defined by using a harmonic map which includes the specification of the fundamental equation of
the thermodynamic system. Quasi-static thermodynamic processes are shown to correspond to
geodesics of the equilibrium manifold which preserve the laws of thermodynamics. We study in
detail the equilibrium manifold of the ideal gas and the van der Waals gas as concrete examples of
the application of geometrothermodynamics.
systems as equilibrium thermodynamic models. We apply statistical thermodynamics
methods to analyze income distribution in the Colombian economic
system. Using the data obtained in random polls, we show that income distribution
We also investigate the phase transition structure by using the standard approach of black hole thermodynamics based upon the analysis of the heat capacity and response functions. We show compatibility between the two approaches. In addition, a new type of phase transition is found
which is due to the presence of phantom energy and corresponds to a transition between black hole states with different stability properties.
developed to describe in an invariant way the thermodynamic properties of a given thermodynamic
system in terms of geometric structures. First, in order to represent the first law of thermodynamics
and the general Legendre transformations in an invariant way, we define the phase manifold as a
Legendre invariant Riemannian manifold with a contact structure. The equilibrium manifold is
defined by using a harmonic map which includes the specification of the fundamental equation of
the thermodynamic system. Quasi-static thermodynamic processes are shown to correspond to
geodesics of the equilibrium manifold which preserve the laws of thermodynamics. We study in
detail the equilibrium manifold of the ideal gas and the van der Waals gas as concrete examples of
the application of geometrothermodynamics.