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Retos del sistema financiero colombiano en la cuarta revolución industrial
Get PDFLa presente investigación pretende analizar los retos que enfrenta el sistema financiero colombiano en el marco de la cuarta revolución industrial, la cual, a través de la transformación digital origina oportunidades y beneficios para el sistema financiero colombiano, donde los datos se consideran un insumo de primer nivel que procesados mediante tecnologías digitales facilitan una mayor rapidez en la toma de decisiones y permite brindar una experiencia del cliente más ágil, personalizada e interactiva, pero también con la inclusión de altos estándares de seguridad. Esta revolución, también llamada Industria 4.0, ofrece igualmente beneficios con la automatización y optimización de procesos buscando mejoras en la productividad, eficiencia, y disminución de los índices de errores operacionales generados por la ejecución de actividades manuales y mecanizadas. No obstante, es preciso mencionar, que existen algunos retos, los cuales requieren un análisis juicioso para entender cómo pueden afectar en el desempeño de la estrategia digital de las compañías financieras.This research aims to analyze the challenges that the Colombian financial system is facing regarding the fourth industrial revolution. Through digital transformation, the industrial revolution creates opportunities and benefits for the Colombian financial system. The processed data using digital technologies is considered a relevant input that allows faster decision-making and provides a faster, personalized and interactive customer experience, but also with high security standards. his revolution, also known as Industry 4.0, offers more processes automation and optimization, looking for improvements in productivity and efficiency and decreasing the operational errors caused by the execution of manual and mechanized activities. However, there are some challenges that require deep analysis to understand how they can affect the performance of the financial companies' digital strategy.Magíster en Administración MBAMaestrí
Era rectoral 2000-2020: Dos décadas de alta calidad
No full textCon la convicción de que "La educación es el arma más poderosa para cambiar el mundo", como lo expresó Nelson Mandela, la Universidad de Medellín a cargo de nuestro señor Rector, ha trazado durante 20 años un camino con el único propósito de lograr a alta calidad, para transformar a vida no solo de los estudiantes, sino de todos los que hacen parte de esta comunidad académica, pues es indiscutible que lo único constante en la vida es el cambio, y así, la Universidad conocida en el 2000 dejó de existir para convertirse en una Casa de Estudios con grandes logros y reconocimientos que le han significado ser hoy una "Universidad de Docencia con investigación hacia a innovación", cuando en la primera década de este siglo tan solo se pensaba en la “Universidad que Soñamos"
Análisis sistémico-constructivista de la noción “Sistema Contable” como equivalente funcional de un mismo problema conceptual de referencia
Get PDFEl sistema contable es una de las categorías fundamentales de las ciencias contables. No obstante, los diferentes constructos que se han formado en torno a éste han resultado insatisfactorios para dar cuenta de una realidad más compleja que nunca. Esto se hace evidente cuando tomamos en cuenta que la perspectiva todo/parte, fundamental para la concepción del sistema contable, realiza a cabo determinadas funciones para mantener el todo en esta dicotomía. Teniendo esto en cuenta, esta tesis llevó a cabo un análisis sistémico-constructivista de las concepciones respecto del sistema contable, realizadas desde la perspectiva sistema/entorno. Esta perspectiva deja de referirse únicamente a las cosas del mundo (causa/efecto) y a los supuestos planteados de antemano (medio/fin), para empezar a referirse ahora a lo posible como fundamental, en donde la ´función´ se hace relevante no porque sea un factor a producir o de adaptación para conservar, sino que es una operación/observación con el fin de ordenar el mundo, es decir, para organizar soluciones equivalentes comparables entre sí. Para ello la teoría y la metodología de los sistemas sociales de Niklas Luhmann, fue usada para suplir las concepciones tradicionales de sistema, la cuales pueden identificarse en el seno de lo que se han considerado paradigmas en torno al sistema contable.The accounting system is one of the base categories of accounting as a discipline. Nevertheless, the different constructs that find their base on the accounting system have shown to be unsatisfactory when it comes to comprehend reality, which seems to be more complex than it has ever been. This becomes evident when we take into consideration that the whole/part perspective, essential to the conception of the accounting system, performs certain functions expected to keep the whole in such dichotomy. Bearing this in mind, this investigation carried out a systemic-constructivist analysis of the different conceptions regarding the accounting system, elaborated from the perspective system/environment. This perspective ceases to refer only to worldly issues (cause/effect) and to the preestablished (means/end), in order to refer to what is possible as fundamental, where the function becomes relevant not for being a producing or adapting factor to keep, but because it is a process /observation that has world ordering as a goal, that is, the organization of analogous solutions. To achieve this, Niklas Luhmann‘s social system theory and method was used to complete the traditional conception of system, which can be identified within the core of paradigms regarding the accounting system
Assessment of the current situation of informal recyclers and recycling: Case study Bogotá
No full textThe contribution of recyclers to the environment and the local economy is not recognized and they are not remunerated for the service they provide to the city. It is well known that informal collection contributes to the recycling of resources in a positive way, but it is also associated with several environmental, health, and social problems. In Colombia, these recyclers work informally. In 2016, Decree 596 was issued, which regulates the utilization of the public cleaning service and the transitory regime for the formalization of informal recyclers. The objective of this work is to evaluate the social and technical impact of recycling in the city of Bogotá three years after the regulations were issued. A study was carried out in order to study how recyclers have been affected by the new regulations after three years of validity as well as understand their perceptions of the evolution of recycling in the city. The study consisted of a series of surveys of recyclers from a statistical sample with 0.05 error that applied a mixed approach. Qualitative and quantitative analysis were included. This analysis was done in order to mix statistical results with deep analysis. The survey indicated that a low percentage of users (good 28%) performed good processes of separation at the source, which lowers the recovery of materials and prevents the potential use of many others. Likewise, it was evidenced that for a material to be sold or commercialized it depends significantly on the separation at the source. In addition, according to the perception of the respondents, society tends to discriminate against them, which leads to the conclusion that discrimination still exists between both the government and society. Finally, the current legislation has not been effective in its implementation and court declarations regarding recyclers as people with inherent rights have not yet been applied in Colombia. © 2019 by the authors
Wood walls insulated with coconut fiber [Muro de madera aislado con fibra de coco]
No full textSolid wood gives the shape to walls, while panels are the coating and they are nailed or screwed to the wood sections. In the cavities between the wood elements and the panels, a thermal and acoustic insulator must be added. Unfortunately, almost all of the currently used insulators (mineral wool, expanded polystyrene, polyurethane) are not biodegradable and require the use of vapor barriers (polyethylene sheets, aluminum foils, etc.) that deteriorate rapidly and that are relatively environmentally unfriendly. In this article, the use of coconut fiber instead of conventional insulators is suggested. The acoustic absorption and thermal conductivity coefficients of composite sections taken from wood walls with coconut fiber are estimated. In this way, good thermo-acoustic conditions inside the wood building are achieved using an ecological insulating material. © The author; licensee Universidad Nacional de Colombia
Sacred Places and Symbolic Altars in Medellin Lugares sagrados e altares simbólicos em Medellín [Lugares sagrados y altares simbólicos en Medellín]
No full textWe make an invitation to visit places where intercultural processes are evident and borders of past and present, rural and urban, as well as the sacred and profane blur. Recognizing the aesthetic singularity that inhabits Medellin city, we were able to relate heteroclite objects in what is recognizable as contemporary rituals and, in this sense, the aesthetics referred to as Chicanas with the intimate scenes of meaning in Medellin, which reflect in visual cartographies of beliefs that evoke Christian religious icons intimately connected with Antioquia s peasant culture. We present a series of photographs to establish connections at the level of the symbolic structures between the Bello Oriente neighborhood altars and some Chicano art manifestations characterized by the use of religious, political, and cultural symbols that reflect social and identity problems in urban scenarios. © 2019 Universidad del Rosario. All Rights Reserved
Magneto-optical properties of Fibonacci graphene superlattices
No full textAbstract: We have studied the transition strength and magneto-optical absorption in Fibonacci graphene superlattices under the effects of perpendicularly applied magnetic field. It is shown that the former quantity present self-similarity and anti-self-similarity behavior at magnetic field strengths connected via ?4 and ?2, respectively, ? being the golden mean. In order to be able to observe this effect, it is necessary that for a particular field the transition strength curve is displaced laterally as a rigid body so that the adjustment is achieved with that corresponding to the other field. It was found that this shifting is determined by the symmetry and scaling properties of the Fibonacci structure. For all the magnetic fields and polarizations of the incident radiation considered here, it is observed that the absorption spectra have the characteristic of self-similarity and also that they show resonant peak structures that satisfy selection rules that keep, in very good approximation, the same characteristics of graphene monolayers. We showed analytically that the similarity properties of both the transition strength and optical absorption are a direct consequence of those of the magnetic subbands. Graphical abstract: [Figure not available: see fulltext.] © 2020, EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature
Extension of the Systemic Entrepreneurship Intention Model in university students
No full textThe extension of the Systemic Entrepreneurship Intention Model, to identify and understand the factors, and their relations, that promote university students' entrepreneurial intention, was proposed in this paper. That is, in the long run, one of the main strategies to promote economic development. The Confirmatory Factor Analysis methodology to analyze the data collected from a selfadministrative questionnaire, which was applied to students of three universities of Colombia, was performed. It was found that personal attitudes and perceived feasibility are the most influential factors when it comes to starting a business. Moreover, young people may have greater intentions of creating a company when they identify good ideas and they perceive them feasible regardless of their risk levels. It is recommended implementing this model in the context of university students in emerging economies to obtain reliable results in understanding their behavior. © 2019, Serbian Journal of Management
Symmetry-protected metallic and topological phases in penta-materials
No full textWe analyze the symmetry and topological features of a family of materials closely related to penta-graphene, derived from it by adsorption or substitution of different atoms. Our description is based on a novel approach, called topological quantum chemistry, that allows to characterize the topology of the electronic bands, based on the mapping between real and reciprocal space. In particular, by adsorption of alkaline (Li or Na) atoms we obtain a nodal line metal at room temperature, with a continuum of Dirac points around the perimeter of the Brillouin zone. This behavior is also observed in some substitutional derivatives of penta-graphene, such as penta-PC2. Breaking of time-reversal symmetry can be achieved by the use of magnetic atoms; we study penta-MnC2, which also presents spin-orbit coupling and reveals a Chern insulator phase. We find that for this family of materials, symmetry is the source of protection for metallic and nontrivial topological phases that can be associated to the presence of fractional band filling, spin-orbit coupling and time-reversal symmetry breaking. © 2019, The Author(s)
Optoelectronic properties of phosphorene quantum dots functionalized with free base porphyrins
No full textElectronic and optical properties of phosphorene quantum dots functionalized with an organic molecule, porphyrin, are investigated using density functional theory with two different van der Waals functionals. The electronic structure of this complex is obtained and with this information, the real and imaginary parts of the dielectric function are calculated, from which, the interband optical response can be determined. Depending on the size of the quantum dot and the relative orientation between the dot and the organic molecule, it is found that the porphyrin physisorption leads to important modifications of the energy spectrum of the functionalized blue phosphorene quantum dots. These changes reflect in the optical response of the complex which shows features that come from both the blue phosphorene structure and the organic molecule. It is also found that the rotations of the molecule with respect to the phosphorene quantum dot do not practically alter the value of the binding energy. © 2019 Elsevier B.V