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Reduction of losses and operating costs in distribution networks using a genetic algorithm and mathematical optimization
(2021-02-09)
This study deals with the minimization of the operational and investment cost in the distribution and operation of the power flow considering the installation of fixed-step capacitor banks. This issue is represented by a ...
Girls Do Not Sweat: the Development of Gender Stereotypes in Physical Education in Primary School
(2020-06-27)
Despite efforts towards gender equality, from an early age, girls practice sport less than boys. Explaining this is paramount to psychology. Stereotypes about gender-appropriate behaviour play a key role in doing physical-sports ...
Numerical Simulations of a Polydisperse Sedimentation Model by Using Spectral WENO Method with Adaptive Multiresolution
(World Scientific Publishing Co. Pte Ltd, 2016)
In this work, we apply adaptive multiresolution (Harten's approach) characteristic-wise fifth-order Weighted Essentially Non-Oscillatory (WENO) for computing the numerical solution of a polydisperse sedimentation model, ...
A generalization of the Gauss–Bonnet–Hopf–Poincaré formula for sections and branched sections of bundles
(Elsevier B.V., 2017)
For a two-dimensional compact oriented Riemannian manifold (M,g), and a vector field V on M, the Hopf–Poincaré theorem combined with the Gauss–Bonnet theorem gives the Gauss–Bonnet–Hopf–Poincaré (GBHP) formula: ∑z∈Z(V)indz(V)= ...
Topological Invariants of Principal G-Bundles with Singularities
(Pleiades Publishing, 2018)
principal G-bundle with singularities is a principal bundle π: P¯ → M with structure group G¯ which reduces to a subgroup G ⊂ G¯ on the set M \ Σ, where M is an n-dimensional compact manifold and Σ ⊂ M is a k-dimensional ...
3-webs with singularities
(Maik Nauka-Interperiodica Publishing, 2016)
A 3-web with singularities is an ordered collection of three one-dimensional distributions L1, L2, L3 on a 2-dimensional manifold M. The subset Σ ⊂ M where these distributions are not pairwise transversal is called the ...
Classical simple Lie 2-algebras of odd toral rank and a contragredient Lie 2-algebra of toral rank 4
(2021-04-29)
After the classification of simple Lie algebras over a field of characteristic p > 3, the main problem not yet solved in the theory of finite dimensional Lie algebras is the classification of simple Lie algebras over a ...
On some families of subsemigroups of a numerical semigroup
(2020-04-07)
To a given numerical semigroup S we associate a family of subsemigroups {휕nS}, n ∈ ℕ, that permits us to understand some of the structure of S. We characterize this family in case S is a supersymmetric numerical semigroup ...
Modelo de programación matemática para la optimizar la programación del personal en una tienda retail : caso de aplicación retail Sincelejo /
(2020)
En los últimos tiempos, las operaciones de las tiendas minoristas enfrentan una variedad de desafíos y complejidades novedosas. El concepto de tienda retail cada día se ve más notorio entre las tiendas que cada usuario ...
Infrastructure and rurality: Challenges for sustainable economic development in Latin America
(2020)
Latin America is a region with a great environmental and cultural diversity; however, most of its countries have high levels of poverty and inequality, characteristics that are accentuated in rural areas. This paper ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.