Listar Productos de investigación por título
Mostrando ítems 1027-1046 de 1392
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Perchlorate-Reducing Bacteria from Hypersaline Soils of the Colombian Caribbean
(Hindawi Limited, 2019)Perchlorate (ClO 4 - ) has several industrial applications and is frequently detected in environmental matrices at relevant concentrations to human health. Currently, perchlorate-degrading bacteria are promising strategies ... -
Perdurabilidad de las empresas del sector agrícola, después de la firma del tratado de libre comercio con los Estados Unidos, en el municipio de Cereté, Córdoba /
(2020)El caso de supervivencia y cierre de las empresas agrícolas ubicadas en el municipio de Cerete que han logrado permanecer y destacarse en medio de una crisis general del sector agrícola colombiano, que dentro de sus ... -
Perfil del docente inclusivo de básica primaria: orientado a la transformación del proceso formativo en las instituciones educativas oficiales del distrito de Cartagena-Colombia
(Cartagena de Indias, 2021-01-06)El objetivo del presente estudio es definir el perfil del docente inclusivo de básica primaria de instituciones educativas del Distrito de Cartagena, Colombia. Participaron 91 docentes pertenecientes a seis escuelas oficiales. ... -
Performance analysis of a microstrip patch antenna loaded with an array of metamaterial resonators
(Institute of Electrical and Electronics Engineers Inc., 2016)An analysis of the electrical performance of a microstrip patch antenna loaded with a periodic array of metamaterial resonators is presented in this work. Hexagonal complementary split ring resonators (CSRRs) are selected ... -
Performance Benchmarking of Stochastic and Deterministic Representation Bases with Compressive Sensing in Computerized Tomography Images
(Cartagena de Indias, 2020-12-24)Computerized tomography is a procedure that emits X-rays rotating around the body, projecting signals to be processed and converted to images. X-rays radiation in people may cause cardiovascular diseases, malformations in ... -
Performance evaluation of mechanical engineering degrees using partial minimum squares and data envelopment analysis
(Cartagena de Indias, 2022)This study analysed the causal relationship between the learning outcomes acquired in high school and university by mechanical engineering students in Colombia. The methodology articulates partial least squares and data ... -
Performance evaluation of structures with reinforced concrete columns retrofitted with steel jacketing
(Cartagena de Indias, 2021-01)Several existing reinforced concrete (RC) buildings fail to conform with current seismic codes, increasing its susceptibility to damage and collapse during earthquakes. A concern for building upgrading and rehabilitation ... -
Perspectivas de la política de contabilidad ambiental, sistemas de información administrativa y financiera
(Cartagena de Indias, 2020-06-23)El objetivo del artículo es analizar desde las políticas públicas el proceso de contabilidad medioambiental, como sistema de gestión de información administrativa y financiera. Metodológicamente, se basó en el paradigma ... -
Perspective of environmental accounting policy, administrative and financial information systems
(Cartagena de Indias, 2020-06-23)The objective of the article is to analyze from the public policies the environmental accounting process, as a management system for administrative and financial information. Methodologically, it was based on the positivist ... -
Perturbing the boundary conditions of the generator of a cosine family
(2012)Let A be a densely defined, closed linear operator (which we shall call maximal operator) with domain D(A) on a Banach space X and consider closed linear operators L:D(A)→∂X and Φ:D(A)→∂X (where ∂X is another Banach space ... -
Phakopsora pachyrhizi is the major pathogen associated with soybean rust in Colombia
(Cartagena de Indias, 2021-03-26)Soybean crops grown in the plains of eastern Colombia have been affected by the incidence of rust. This disease, still officially regarded as American soybean rust (caused by Phakopsora meibomiae) by the Colombian Department ... -
Phonetic Detection for Hate Speech Spreaders on Twitter
(Cartagena de Indias, 2021-09-24)Nowadays, hate messages have become the object of study on social media. Efficient and effective detection of hate profiles requires various scientific disciplines, such as computational linguistics and sociology. Here, ... -
Photovoltaic power predictor module based on historical production and weather conditions data
(Cartagena de IndiasIngeniería de Sistemas y Computación, 2022-11-22)In recent years the demand for electrical energy has increased significantly. Usually, the electrical grid covers this demand. However, this fuel energy is known for its significant carbon footprint. For that reason, ... -
Photovoltaic System for Microinverter Applications Based on a Non-Electrolytic-Capacitor Boost Converter and a Sliding-Mode Controller
(Cartagena de Indias, 2022-09-15)This paper presents a photovoltaic (PV) system designed to reduce the DC-link capacitance present in double-stage PV microinverters without increasing the capacitor interfacing the PV source. This solution is based on a ... -
Physical-aware pattern selection for stuck-at faults
(Institute of Electrical and Electronics Engineers Inc., 2017)The stuck-at faults are basic faults that fail the chips. Various defects in the circuit can develop into stuck-at faults. To detect more defects caused by stuck-at faults, some of the fault sites may need to be detected ... -
Physico-Chemical and structural interpretation of discrete derivative indices on N-tuples atoms
(MDPI AG, 2016)This report examines the interpretation of the Graph Derivative Indices (GDIs) from three different perspectives (i.e., in structural, steric and electronic terms). It is found that the individual vertex frequencies may ... -
PI-PBC Approach for Voltage Regulation in Cuk Converters with Adaptive Load Estimation
(Cartagena de Indias, 2020-11-25)This paper proposes a proportional-integral passivity-based controller (PI-PBC) for supporting voltage in linear loads integrated with Ćuk converters. An adaptive load estimator is also employed to avoid current measurements ... -
Pixel-wise rational model for a structured light system
(Cartagena de Indias, 2023-05-15)This Letter presents a novel structured light system model that effectively considers local lens distortion by pixel-wise rational functions. We leverage the stereo method for initial calibration and then estimate the ... -
Plan de acción para la creación de condiciones necesarias que den cumplimiento a los requerimientos del decreto 1072 de 2015 referente al sistema de gestión de seguridad y salud en el trabajo en la empresa HBL infraestructura integral S.A.S. De la ciudad de Cartagena
(2021)En el presente trabajo, basados en la ISO 45001 y abordando el marco legal regido en la república de Colombia, más específicamente en el Decreto 1072 de 2015, se crea un plan de acción que le permita a la empresa HBL ... -
Plan de mejora en el nivel de madurez organizacional en gerencia de proyectos para cinco pymes del sector de la metalmecánica en Cartagena /
(2020)Los diferentes modelos de madurez para gestión de proyectos, han sido ideados para grandes empresas y muy pocos estudios han centrado su interés en las características de las Pymes, el conocimiento de estos modelos por ...
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.