12456 research outputs found
Sort by
Community preferences for participating in ecotourism: a case study in a coastal lagoon in Colombia
No full textEcotourism is grounded in the concept of socio-environmental sustainability. However, the literature needs more clarification on the determinants of ex ante determinants for community participation in ecotourism in coastal lagoon ecosystems. This paper aims to analyze community-based ecosystem management through participation in ecotourism. After a case study design, a survey-like method was used to identify the social willingness to engage in ecotourism and the benefits that the participants preferred as a result of participating. The results show that most respondents believe that ecotourism would promote environmental conservation in the area and also considered their participation essential to ensure the success of ecotourism. Therefore, this research emphasizes the importance of identifying local perceptions of ecotourism before its implementation, evaluates the willingness of locals to participate in this strategy to highlight community agency, and investigates how participation could be achieved. These results are useful for future research and studies on the willingness to take part in ecotourism studies and the understanding of the relationship between society and ecosystems
Gaussian similarity-based adaptive dynamic label assignment for tiny object detection
No full textBenefiting from the advanced deep learning techniques, significant achievements have been made in generic object detection. Tiny object detection (TOD) is a challenging task in computer vision due to the low resolution, insufficient geometric cues, and high noise levels. A recent trend for detectors is introducing more granular label assignment strategies to provide promising supervision information for classification and regression. However, most previous Intersection-Over-Union (IoU) based methods suffer from two main drawbacks, including (1) low tolerance of IoU for bounding box deviations in tiny objects and (2) deficient guidance for optimization caused by inter-sample and intra-sample imbalance. We propose two novel components to address these problems: the Gaussian probabilistic distribution-based fuzzy similarity metric (GPM) and the adaptive dynamic anchor mining strategy (ADAS). GPM aims to address the issue of inaccurate similarity measurement between small bounding boxes and pre-defined anchors, providing a more accurate basis for label assignment. ADAS adopts a dynamically adjusted strategy for label assignment to address the distribution bias between positive and negative samples, ensuring that the label assignment is consistent with the distribution of objects in the image. Extensive experiments are conducted on AI-TODv2 and other tiny object detection datasets to evaluate the proposed ADASGPM method’s performance. The results demonstrate that incorporating ADAS-GPM into an anchorbased object detector yields significant outperformance over state-of-the-art methods on the challenging
AI-TODv2 benchmark. The proposed ADAS-GPM method exhibits good results, clearly demonstrating its validity and potential
EE319 Healthcare resource utilization and direct medical costs associated with post COVID-19 condition in Colombia, 2020-2021
No full textObjectives. This study aimed to estimate the direct medical costs of patients with post COVID-19 condition in a Colombian insurance company with more than 2.5 million affiliates. Methods. We conducted a bottom-up cost-of-illness study of adults with persistent symptoms after at least three months of hospital discharge due to COVID-19. We surveyed patients that were hospitalized between March 2020 and August 2021. We asked about healthcare resource utilization (HCRU), which included laboratories and images, medications, consults, rehospitalizations, and others, associated with post COVID-19 condition. The answers were verified using the company’s outpatient and inpatient service authorization records. Costs were estimated from the third payer perspective and expressed in American dollars using an exchange rate of 1USD824 (95%CI 195-1,454). Costs in outpatient were US3,285 (95%CI -167-6,738). Conclusions. It is crucial to follow up and identify patients discharged from the hospital who persist with symptoms after three months since we observed a greater HCRU, including prolonged recovery therapie
EE224 How Expensive Is a Stroke in the Caribbean Region of Colombia?
No full textObjectives: We aimed to describe the annual direct medical costs of stroke in the Caribbean region of Colombia, 2018-2021. Methods: A cross-sectional study of patients with a stroke event was conducted. We described the direct medical costs and use of health resources between 2018-2021. The analyzed patients were affiliated to a health insurer in Colombia (Mutual SER EPS) with more than 2.5 million affiliates in the Caribbean region. Mean and median cost were expressed as annual averages with their 95% confidence intervals. An american dollars average rate of 3,981.16 COP for 12/31/2021 was used to express the cost. Results: 357 patients were analyzed, 52.4% female and 58.8% were from Bolivar and 24.4% were from Sucre; the mean age was 68.9(SD16.5) and 97.8% are poor (belong to subsidize health regime). 60.2% use drugs with a mean cost of 105.5- 61.9 95% CI 79.6). Only 16 patients used ICU service, however, it represents 36.8% of the total cost of care (median cost 3,359.0-809.2 95%IC 1,012.4) and only 0.28% required a surgery. Conclusions: ICU and intermediate hospitalization represent high cost of care for patient with stroke in the caribbean region of Colombia. Home care represent almost the same cost of general hospitalization. It is recommended to continue working in prevention programs to reduce strokes and cost of care
Estrategias innovadoras en unidades productivas agropecuarias: conocimiento en desarrollo de nuevos servicios y cadenas de valor
No full textThe world faces unavoidable challenges that force organizations to undertake actions that solve, mitigate and reverse problems arising from the lack of social, economic and environmental sustainability, with climate change being one of the most pressing. The implementation of new technologies would mean a costly transition, but fundamental and necessary to trace paths that help preserve the planet and the institutions of all kinds that exist in it. The research seeks to describe innovative strategies in agricultural production units as part of the knowledge in the development of new services and value chains. The innovation and adoption of new technologies in processes and consumption patterns will only be possible if companies manage to develop markets that provide in their value offer, the component of environmental sustainability in a transversal way in all their activities. The findings show that the adoption of innovative strategies in agricultural production companies has been slow, so the accompaniment of government entities, civil society organizations, academia, research centers and others is crucial to address these problems and generate strategies to solve them.El mundo enfrenta desafíos ineludibles que obligan a las organizaciones a emprender acciones que resuelvan, mitiguen y reviertan los problemas derivados de la falta de sostenibilidad social, económica y ambiental, siendo el cambio climático uno de los más apremiantes. La implementación de nuevas tecnologías significaría una transición costosa, pero fundamental y necesaria para trazar caminos que ayuden a preservar el planeta y las instituciones de todo tipo que en él existen. La investigación busca describir estrategias innovadoras en unidades productivas agropecuarias como parte del conocimiento en el desarrollo de nuevos servicios y cadenas de valor. La innovación y adopción de nuevas tecnologías en procesos y patrones de consumo solo será posible si las empresas logran desarrollar mercados que aporten en su oferta de valor, el componente de sostenibilidad ambiental de manera transversal en todas sus actividades. Los hallazgos muestran que la adopción de estrategias innovadoras en las empresas productoras agropecuarias ha sido lenta, por lo que el acompañamiento de entidades gubernamentales, organizaciones de la sociedad civil, academia, centros de investigación y otros es crucial para abordar estos problemas y generar estrategias para solucionarlo
Analysis of the tourism sector of the city of Barranquilla applying machine learning
No full textIntroducción— Anualmente llegan a Colombia más de 6.5 millones de personas provenientes de otros países, según lo indicado por el Ministerio de Comercio, Industria y Turismo, demostrando que el país es un destino turístico clave en la región. Se debe aprovechar el auge que vive el sector e insertarse en el mercado como un destino innovador, diverso y de alto valor. Objetivo— El objetivo de esta investigación es presentar de manera general el sector turístico en Colombia e introducir el concepto de aprendizaje automático aplicado a dicho sector. Metodología— Para la documentación de este estudio, se utilizó una metodología de exploración de fuentes secundarias, a través de la exploración de bases de datos como Scopus, Science Direct, EbscoHost, IEEE, entre otras. Resultado— En la revisión conceptual se encontró que Colombia tiene un gran potencial turístico en diferentes áreas y en sus diversas regiones. Sin embargo, existen limitaciones en la gestión y organización de los sectores y en la implementación de nuevas tecnologías para mejorar su competitividad. Conclusión— El sector turístico busca soluciones más realistas y satisfactorias como resultado de la innovación de las TIC y el uso de sistemas informáticos y equipos de telecomunicaciones en el procesamiento de la información lo que permite dar mejores respuestas a los clientes y mejorar los sistemas productivos.Introduction— Annually more than 6.5 million people arrive in Colombia from other countries, as indicated by the Ministry of Commerce, Industry and Tourism, demonstrating that the country is a key tourist destination in the region. It should take advantage of the boom in the sector and enter the market as an innovative, diverse and high-value destination. Objetive— The objective of this research is to present in a general way the tourism sector in Colombia and to introduce the concept of machine learning applied to this sector. Metodology— For the documentation of this study, a methodology of exploration of secondary sources was used, through the exploration of databases such as Scopus, Science Direct, EbscoHost, IEEE, among others. Results— In the conceptual review, it was found that Colombia has great tourism potential in different areas and in its various regions. However, there are limitations in the management and organization of the sectors and in the implementation of new technologies to improve their competitiveness. Conclusions— The tourism sector seeks more realistic and satisfactory solutions because of ICT innovation and the use of computer systems and telecommunications equipment in information processing, which allows better responses to customers and improve production systems
Análisis para la Constitución de Acqua Services S.A.S., Empresa de Servicios Financieros como Intraemprendimiento de Un Fondo de Empleados
No full textEl proyecto titulado "Análisis para la Constitución de Acqua Services SAS, Empresa de Servicios Financieros como Intraemprendimiento de un Fondo de Empleados" se enfoca en la evaluación y planificación de la creación de Acqua Services SAS, una empresa de servicios financieros que surge como un proyecto de intraemprendimiento dentro de un fondo de empleados. Este proyecto busca determinar la viabilidad de establecer una nueva entidad financiera dentro del marco de un fondo de empleados, considerando factores financieros, legales y operativos. Para lograrlo, se llevará a cabo un análisis exhaustivo que incluya la identificación de oportunidades de mercado, la evaluación de los recursos necesarios, la definición de estructuras organizativas y la elaboración de un plan estratégico sólido. El proyecto también explorará la regulación y los requisitos legales que rodean la creación y operación de una empresa de servicios financieros, asegurando el cumplimiento normativo en todo momento. El objetivo final es proporcionar a los interesados, incluidos los miembros del fondo de empleados, una visión clara de cómo se llevará a cabo la constitución de Acqua Services SAS y cómo esta iniciativa puede contribuir al crecimiento y desarrollo de la comunidad de empleados. Este análisis estratégico y exhaustivo sentará las bases para la toma de decisiones informadas y la implementación exitosa del proyecto de intraemprendimiento.The project entitled "Analysis for the Constitution of Acqua Services SAS, Financial Services Company as an Intrapreneurship of an Employees' Fund" focuses on the evaluation and planning of the creation of Acqua Services SAS, a financial services company that emerges as an intrapreneurship project within an employees' fund. This project seeks to determine the feasibility of establishing a new financial entity within the framework of an employee fund, considering financial, legal and operational factors. To achieve this, a comprehensive analysis will be carried out, including the identification of market opportunities, assessment of necessary resources, definition of organizational structures and the development of a sound strategic plan. The project will also explore the regulatory and legal requirements surrounding the creation and operation of a financial services company, ensuring regulatory compliance at all times. The ultimate goal is to provide stakeholders, including employee fund members, with a clear vision of how the formation of Acqua Services SAS will be carried out and how this initiative can contribute to the growth and development of the employee community. This strategic and comprehensive analysis will lay the foundation for informed decision making and successful implementation of the intrapreneurship project.Listas de Tablas y Fíguras 4 -- Introducción 11 -- Capítulo I. Planteamiento del Problema 15 -- Descripción del Problema 15 -- Formulación del Problema 19 -- Justificación 20 -- Objetivos 22 -- Objetivo General 22 -- Objetivos Específicos 22 -- Capítulo II. Marco de Referencias 23 -- Antecedentes 23 -- Emprendimiento e Intraemprendimiento 23 -- Fondo de Empleados 25 -- El Entorno Económico y Financiero 27 -- Análisis de la Empresa y el Mercado 28 -- Análisis Interno de la Empresa 29 -- Análisis Externo del Mercado 30 -- Capítulo III. Diseño Metodológico 35 -- Método 35 -- Árbol de Problemas 35 -- Pestel 36 -- Las 5 Fuerzas de Porter 37 -- Análisis Dofa 38 -- Benchmarking 39 -- Modelo de Negocio: Canvas 40 -- Propuesta de valor 42 -- Marketing Mix. 43 -- Desarrollo de la Marca 45 -- Proyecciones Financieras 47 -- Capítulo IV. Ejecución del Proyecto 50 -- Diseño de la Empresa y su Estrategia 50 -- Diseño de la Estructura Organizacional 52 -- Árbol de Problemas 54 -- Desarrollo de la Herramienta Pestel 56 -- Las 5 Fuerzas de Porter 58 -- Análisis Dofa 60 -- Benchmarking 61 -- Modelo de Negocio: Canvas 65 -- Propuesta de Valor 65 -- Desarrollo y Despliegue Pendiente 68 -- Marketing Mix. 68 -- Plan de Marketing 68 -- Análisis de Estrategia Empresarial con Base en Datos Obtenidos del Software Absolute IA 81 -- Desarrollo de la Marca 82 -- Proyecciones Financieras 83 -- Conclusiones 94 -- Referencias 97Magíster en AdministraciónMaestrí
Designing multifunctional biocatalytic cascade system by multi-enzyme co-immobilization on biopolymers and nanostructured materials
No full textIn recent decades, enzyme-based biocatalytic systems have garnered increasing interest in industrial and applied research for catalysis and organic chemistry. Many enzymatic reactions have been applied to sustainable and environmentally friendly production processes, particularly in the pharmaceutical, fine chemicals, and flavor/fragrance industries. However, only a fraction of the enzymes available has been stepped up towards industrial-scale manufacturing due to low enzyme stability and challenging separation, recovery, and reusability. In this context, immobilization and co-immobilization in robust support materials have emerged as valuable strategies to overcome these inadequacies by facilitating repeated or continuous batch operations and downstream processes. To further reduce separations, it can be advantageous to use multiple enzymes at once in one pot. Enzyme co-immobilization enables biocatalytic synergism and reusability, boosting process efficiency and cost-effectiveness. Several studies on multi-enzyme immobilization and co-localization propose kinetic advantages of the enhanced turnover number for multiple enzymes. This review spotlights recent progress in developing versatile biocatalytic cascade systems by multi-enzyme co-immobilization on environmentally friendly biopolymers and nanostructured materials and their application scope in the chemical and biotechnological industries. After a succinct overview of carrier-based and carrier-free immobilization/co-immobilizations, co-immobilization of enzymes on a range of biopolymer and nanomaterials-based supports is thoroughly compiled with contemporary and state-of-the-art examples. This study provides a new horizon in developing effective and innovative multi-enzymatic systems with new possibilities to fully harness the adventure of biocatalytic systems
On the influence of drained cyclic preloadings on the cyclic behaviour of Zbraslav sand
No full textThis article experimentally evaluates the influence of directional drained cyclic preloadings on the subsequent undrained monotonic and cyclic response of Zbraslav sand. The cyclic tests were performed on dense samples and under triaxial conditions. The experiments considered several different preloading directions, magnitude of the maximum deviatoric stress reached during the drained preloading stage and deviatoric stress amplitudes during the undrained shearing stage. The experimental results suggested that the rate of strains and pore water pressure accumulation, and therefore, the number of cycles to reach initial liquefaction or failure conditions are remarkably affected by the direction of the drained preloading history. In addition, the preloading direction plays a major role on the contractive/dilative response during the subsequent undrained monotonic loading. In particular, directional drained cyclic preloadings toward positive deviatoric stresses at constant mean effective stress and isotropic compression led to more dilative responses. Contrary, preloadings toward negative deviatoric stresses at constant mean effective stress led to more contractive responses. The results suggest that these major variations cannot be associated to the rather small changes in the relative density of the samples but likely due to fabric changes and induced anisotropy caused by the drained preloading history
Ruta pedagógica mediada por las Tic, como estrategia para el fortalecimiento de la convivencia Escolar
No full textEn este proyecto de investigación se identifican las causas que originan los conflictos que afectan la convivencia en las aulas educativas, caracterizando los comportamientos estudiantiles que reflejan relaciones disruptivas, ausencia de valores sociales, problemáticas familiares e influencia negativa del contexto social.Para mitigar los conflictos en las instituciones, se presenta una propuesta que consiste en el diseño de una ruta pedagógica, mediada por las TIC, que contribuya al fortalecimiento de la convivencia escolar, posibilitando un ambiente de paz a partir de la resolución pacífica de los problemas utilizando para ello el diálogo, la mediación y el cumplimiento de acuerdos escolares. La propuesta está enmarcada en una investigación (de tipo) racionalista crítico, bajo el método deductivo en tres fases de investigación constituida por una etapa teórica de recopilación de información con trabajos similares. En una segunda etapa enmarcada en la recopilación de datos de tipo cuantitativo, aplicando la técnica de la encuesta y de la entrevista. La última etapa de tipo propositiva se presenta la propuesta de ruta pedagógica bajo los lineamientos del marco lógico en diseño, estructura, operatividad y evaluación por los actores educativos.
Se descubrieron elementos interesantes en cuanto a la coherencia entre los requerimientos del ente legal/teórico con la implementación de directrices para resolver problemas convivenciales, atendiendo a la influencia del contexto, la familia, la normalización de la violencia y la población inclusiva. Se recomienda aplicar la propuesta para mitigar los conflictos mejorando los ambientes de aprendizaje.In this research project, the causes of conflicts that affect coexistence in educational classrooms are identified, characterizing student behaviors that reflect disruptive relationships, the absence of social values, family problems, and the negative influence of the social context. To mitigate conflicts in educational institutions, a proposal is presented that consists of the design of a pedagogical route, mediated by ICT, which contributes to the strengthening of school coexistence, enabling an environment of peace from the peaceful resolution of problems using for it the dialogue, mediation, and compliance with school agreements. The proposal is framed in a critical rationalist investigation (type) in three research phases constituted by a theoretical stage of information gathering with similar research works, complemented with institutional documentary analysis, plus the legal regulations on which they are based.
In a second stage framed in the collection of quantitative data, applying the survey technique. The last initiative-taking stage under the guidelines of the logical framework in design, structure, operation and evaluation by educational actors. Interesting elements were discovered regarding the coherence between the requirements of the legal/theoretical entity with the implementation of guidelines to solve coexistence problems, considering the influence of the context, the family, the normalization of violence and the inclusive population. The implementation of the proposal is recommended to mitigate conflicts by improving learning environments.Lista de tablas y figuras 10 -- Capítulo I. Situación de Estudio 16 -- Problema de Investigación. 16 -- Formulación del Problema 27 -- ¿Cuáles componentes teóricos operativos deben considerarse en el diseño de una ruta pedagógica que mediadas por las TIC, posibilite el fortalecimiento de la convivencia escolar en los estudiantes de la IED despertar del sur en Barranquilla- Colombia para el año 2022? 28 -- ¿Cómo validar el diseño de una ruta pedagógica que mediada por las TIC, fortalezca la convivencia escolar en estudiantes de la IED despertar del Sur en Barranquilla- Colombia para el año 2022? 28 -- Objetivos 28 -- Objetivo General 28 -- Objetivos Específicos 29 – Justificación 30 -- Delimitación y alcance de la investigación 33 -- Delimitación Temática 33 -- Delimitación Espacial 33 -- Delimitación Temporal 34 -- Capitulo II Sistema Teórico 36 -- Estado del arte 36 -- La convivencia escolar: una aproximación a sus fundamentos conceptuales 43 -- Fundamentación Legal 53 -- Decretos Sobre Convivencia 55 -- Capítulo III Sistema metodológico 69 -- Enfoque Epistemológico 70 -- Paradigma de Investigación 70 -- Capítulo IV. Presentación y Análisis de los resultados 77 -- Presentación de los Resultados 78 -- Análisis de los resultados 79 -- Análisis de revisión documental 79 -- Análisis Factorial Exploratorio y Confirmatorio 93 -- Análisis de Resultados de Docentes 93 -- Codificación y categorización de datos cualitativos 189 -- Triangulación concomitante 210 -- Capítulo V. La Propuesta: Ruta Pedagógica Mediada Por Las TIC, como Estrategia Para El Fortalecimiento de La Convivencia Escolar 216 -- Presentación de La Propuesta 216 -- Fundamentación Axiológica de La Propuesta 218 – Misión 218 -- Visión. 218 -- Principios Institucionales 219 -- Principios de La Ruta Pedagógica Para El Fortalecimiento de La Convivencia 219 -- Valores de La Institucionales 220 -- Valores Por desarrollar 220 -- Perfil de Los Actores Educativos 221 – Objetivos 222 – Objetivo General: Diseñar la propuesta, Ruta Pedagógica, mediada por las TIC, para el fortalecimiento de la convivencia en los estudiantes de la I.E.D. despertar del Sur 222 --
Objetivos Específicos 222 -- Componente Sociodemográfico 222 -- Fundamentos Teóricos y Legales 223 -- Fundamentación Teórica 223 -- Fundamentación Legal 224 -- Componente Epistemológico 228 -- Etapas de La Ruta Pedagógica Mediadas Por Las TIC 229 -- Diseño de la propuesta y validación 231 -- Operatividad de La Propuesta Etapa 1 234 -- Validación del diseño del plan operativo de la propuesta 238 – Conclusiones 241-- Recomendaciones 244 – Referencia 249 --Magíster en Educación – Modalidad VirtualMaestrí