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Mostrando ítems 1011-1020 de 1032
Hadronic energy-energy correlation from electron-positron annihilation at next-to-leading order in quantum chromodynamics
(Universidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - FísicaDepartamento de FísicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2021)
In this thesis, we study the energy-energy correlation event shape variable for the electron-positron annihilation in quantum chromodynamics. We begin with the computation of the distribution at leading order in the strong ...
Looking for a physical basis of rainfall multifractality
(Departamento de Geociencias y Medo AmbienteUniversidad Nacional de Colombia - Sede Medellín, 2019-12-18)
The study of rainfall arises from the necessity for knowing large and short-term climatic dynamics, as well as their affectations in the context of engineering practices. This research focus on the study of tropical rainfall ...
Symmetry conservation in fukui functions
(2015)
In this work, a model-based controller for the air to fuel ratio (represented by ?) is designed for spark ignition (SI) engines in order to rise the fuel consumption efficiency and to reduce the emission of pollutant gases ...
Control of electromagnetic waves using metamaterials and metasurfaces based on Huygens' sources
(Universidad Nacional de ColombiaBogotá - Ciencias - Maestría en Ciencias - FísicaDepartamento de FísicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá, 2022-06)
This Master's thesis is about the study of a Huygens' source and its application to the design of two applications where the small backscattering is required: a left-handed metamaterial matched to free-space impedance and ...
Desarrollo de un modelo probabilístico de flujo de materia y transporte de escalares en yacimientos de hidrocarburos sometidos a inyección de nanofluidos
(Medellín - Minas - Doctorado en Ingeniería - Sistemas EnergéticosDepartamento de Procesos y EnergíaUniversidad Nacional de Colombia - Sede Medellín, 2020-10-20)
During the last decade, the injection of nanofluids in hydrocarbon fields has been of increasing interest, as an enhanced oil recovery (EOR) technique. Specifically, when applying this technique, search among others, i.) ...
Search for production of four top quarks in final states with svame-sign or multiple leptons in proton-proton collisions at root s=13 TeV
(Springer, 2020-01-31)
The standard model (SM) production of four top quarks (tt over bar tt over ba in proton-proton collisions is studied by the CMS Collaboration. The data sample, collected during the 2016-2018 data taking of the LHC, corresponds ...
Fragmentos de Ciudad: Obsolescencia y Territorio en Manizales (Colombia) y Otavalo (Ecuador)
(Facultad de Ciencias Jurídicas y SocialesManizalesAdministración de Empresa Agropecuarias, 2021)