361 research outputs found

    Transformación digital para el mejoramiento de los servicios al ciudadano beneficiarios de la formalización de tierras en Colombia

    Get PDF
    107 páginas : ilustraciones, mapas, gráficosThrough this project we intend to present a model of information analysis for the follow-up of land allocation processes, which will allow us to identify the states of the procedures and their different variables. with respect to the requests made to the problem of social order of property in Colombia. through the capture and analysis of information. In order to achieve the above, the following objectives were established: • Identify the different sources of information useful for the National land Agency in order to carry out an adequate capture of information of the target group and its subsequent analysis. • Propose a descriptive analytical solution that allows to generate value reports by crossing multiple data sources. • Deliver a useful tool for decision making in the offer towards citizen service. Thus, achieving the objectives set. this project will provide some understanding and decision making in streamlining procedures such as the land Formalization process with defined parameters to make more effective the inclusion of the population in a territorial development schemePor medio de este proyecto se pretende presentar un modelo de análisis de información para el seguimiento a los procesos de adjudicación de tierras. que permitan identificar los estados de los trámites y sus diferentes variables, con respecto a las solicitudes realizadas a la problemática del ordenamiento social de la propiedad en Colombia, mediante la captura y análisis de la información. Con el fin de lograr lo anterior se establecieron los siguientes objetivos: • Identificar las diferentes fuentes de información útiles para la Agencia Nacional de Tierras con el fin de realizar una adecuada captura de información del grupo objetivo y su posterior análisis. • Proponer una solución analítica descriptiva que permita generar reportes de valor mediante el cruce de múltiples fuentes de datos. • Entregar una herramienta útil para la toma de decisiones en la oferta hacia el servicio al ciudadano. Así las cosas, logrando los objetivos trazados, con este proyecto se aportará en alguna medida la comprensión y la toma de decisiones en la racionalización de los trámites como el del proceso de formalización de Tierras con unos parámetros definidos para hacer más efectiva Ia inclusión de la población en un esquema de desarrollo a nivel territorial.Magíster en Gerencia Estratégica de Tecnologías de InformaciónMaestrí

    Diversity of functional groups in the vegetation sandy seashore of the Grande, Anclitas and Caguamas Cays (Jardines de la Reina Archipelago, Cuba)

    Get PDF
    Las costas arenosas son ambientes extremos donde la vegetación desarrolla adaptaciones morfológicas y fisiológicas para su supervivencia. Con la finalidad de cuantificar y relacionar la diversidad funcional con factores abióticos, se tomaron datos de riqueza y abundancia en la vegetación de costa arenosa de los cayos Grande, Anclitas y Caguamas. La flora se caracteriza por poseer un predominio de plantas caméfitas y hemicriptófitas, con hojas nanófilas y síndromes de dispersión de anemocoria y zoocoria. No obstante, la riqueza de los grupos funcionales varía entre los cayos estudiados. La diversidad funcional es semejante entre las estaciones lluvia y seca, y su variación espacial depende de la interacción del conjunto de factores abióticos medidos.Sandy shores are known to be extreme ecosystems where the vegetation has evolved many morphological and physiological adaptations for its survival. With the aim of identify possible relationships between the vegetation´s functional diversity with abiotic factors and its corresponding quantification, we collected data on the abundance and richness of the sandy coast vegetation complex in Grande, Anclitas and Caguamas keys. Its flora is largely characterized by the dominance of hemicryptophytes and chamaephytes plants with nanophyllous leaves and displaying dispersal syndromes such as zoochory and anemochory. However, the functional groups´ richness, in the present study, varies from one key to another. Functional diversity is similar between the wet and dry seasons, and its spatial variation is influenced by the interplay of the set of abiotic factors herein studied

    The State of Latino Health and Mental Health

    Get PDF
    The Centro de Estudios Puertorriqueños/Hunter College and Fordham University Graduate School of Social Service collaborated on this report to review the health and mental health status of Latinos/as. This analysis integrates national and local statistics from published reports and scholarly articles. Based on the analysis of Hispanic health and mental health, the authors have generated a set of recommendations for policies targeting the health and mental health needs of Latinos/as and promoting their overall well-being. Aside from these specific recommendations, they call for more disaggregated data collection about Hispanic subgroups

    Estudio comparativo de tres técnicas de navegación para robots móviles

    Get PDF
    This paper described the problem of path-planning in mobile robots in a partially structured environment. The work was divided in three parts: design of a mechatronic system, denominated Robot IO, study of advantages and disadvantages of three path-planning algorithms: neural nets, genetic algorithms and fuzzy logic, and implementation of algorithms that allow to identify the workspace where lO moves.El artículo se centra en la problemática de la navegación de robots móviles que se desplazan por un entorno parcialmente estructurado. El trabajo se divide en tres partes: diseño de un sistema mecatrónico, denominado Robot IO, estudio de las ventajas y desventajas de aplicar tres técnicas de navegación, redes neuronales, algoritmos genéticos y lógica difusa, por último la implementación de un algoritmo que permita identificar el espacio de trabajo por el cual se desplaza lO

    Estudio comparativo de tres técnicas de navegación para robots móviles

    Get PDF
    This paper described the problem of path-planning in mobile robots in a partially structured environment. The work was divided in three parts: design of a mechatronic system, denominated Robot IO, study of advantages and disadvantages of three path-planning algorithms: neural nets, genetic algorithms and fuzzy logic, and implementation of algorithms that allow to identify the workspace where lO moves.El artículo se centra en la problemática de la navegación de robots móviles que se desplazan por un entorno parcialmente estructurado. El trabajo se divide en tres partes: diseño de un sistema mecatrónico, denominado Robot IO, estudio de las ventajas y desventajas de aplicar tres técnicas de navegación, redes neuronales, algoritmos genéticos y lógica difusa, por último la implementación de un algoritmo que permita identificar el espacio de trabajo por el cual se desplaza lO

    Laboratory assessment of porous asphalt mixtures reinforced with synthetic fibers

    Get PDF
    Porous asphalt (PA) mixtures have become a new alternative in the development of new road pavement surface layers given their multiple advantages such as surface runoff improvement, the decrease of the urban heat island effect, the reduction of road traffic noise and the minimization of the spray and aquaplaning effect leading to a safer driving. However, the durability of these mixtures is not as good as for dense graded mixtures. This research studies the effectiveness of adding a blend of polyolefin/aramid fibers and homopolymer polyacrylonitrile fibers in PA mixtures in terms of functionality and mechanical performance. Furthermore, changes in the filler content are assessed. The experimental testing plan includes air voids characterization, permeability, moisture sensitivity and particle loss in dry and wet conditions. Improvements in the mechanical performance can be observed in dry conditions. Finally, the fracture energy, postcracking energy and toughness are also analyzed. The results show that the addition of fibers brings ductility to the PA mixture improving toughness while maintaining functionality since the air void content remains over 20%

    Mechanical performance of fibers in hot mix asphalt: a review

    Get PDF
    The use of fibers in hot mix asphalt (HMA) has become a much more attractive alternative for the con-struction of road pavements. Numerous studies have shown that the incorporation of fibers in the mix-ture improves fatigue resistance, permanent deformation and stiffness. The aim of this paper is to presenta review of the mechanical impact of fibers in HMA by analyzing their reinforcement effect in a qualita-tive and quantitative manner. Fiber properties and characterization tests on fiber-modified bitumen arediscussed. Quantities, blending procedures and performance of bituminous mixtures with different typesof fibers are presented. Results of mechanical improvement are displayed. Based on the current researchresults, depending on the properties and the type of mixture in which they are used, each type of fiberseems to improve certain parameters more than others. Coconut fibers and waste fibers are describedas environmentally friendly alternatives

    Multi-Response Optimization of Porous Asphalt Mixtures Reinforced with Aramid and Polyolefin Fibers Employing the CRITIC-TOPSIS Based on Taguchi Methodology

    Get PDF
    For the optimum design of a Porous Asphalt (PA) mixture, different requirements in terms of functionality and durability have to be fulfilled. In this research, the influence of different control factors such as binder type, fiber content, and binder content were statistically investigated in terms of multiple responses such as total air voids, interconnected air voids, particle loss in dry conditions, particle loss in wet conditions, and binder drainage. The experiments were conducted based on a Taguchi L18 orthogonal array. The best parametric combination per each response was analyzed through signal to noise ratio values. Multiple regression models were employed to predict the responses of the experiments. As more than one response is obtained, a multi-objective optimization was performed by employing Criteria Importance through Criteria Inter-Correlation (CRITIC) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methodologies. The weights for the selection of the functional and mechanical performance criteria were derived from the CRITIC approach, whereas the ranking of the different experiments was obtained through the TOPSIS technique. According to the CRITIC-TOPSIS based Taguchi methodology, the optimal multiple-response was obtained for a polymer modified binder (PMB) with fiber and binder contents of 0.15% and 5.0%, respectively. In addition, good results were obtained when using a conventional 50/70 penetration grade binder with a 5.0% binder content and 0.05% fiber content.FORESEE project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 769373

    Effect of Synthetic Fibers and Hydrated Lime in Porous Asphalt Mixture Using Multi-Criteria Decision-Making Techniques

    Get PDF
    Porous asphalt is a type of mixture characterized by having high air void percentages that offers multiple benefits when used in wearing courses in terms of driving safety, water flow management, and noise reduction. However, the durability of porous asphalt (PA) mixtures is significantly shorter when compared to dense-graded asphalt mixtures. This study investigated the impact of polyolefin-aramid fibers and hydrated lime in the functional and mechanical performance of porous asphalt mixtures. A parametric study based on the concept of design of experiments was carried out through the Taguchi methodology. Accordingly, an experimental design was conducted based on the L18 full factorial orthogonal array. Three control factors-fiber content, binder content, and filler type- were included at various levels, and multiple responses including total air voids, interconnected air voids, particle loss in dry conditions, particle loss in wet conditions, and binder drainage were assessed experimentally. Signal-to-noise ratios were calculated to determine the optimal solution levels for each control factor for the multiple responses. In the second phase of the research, multi-criteria decision-making techniques -namely, criteria importance through inter-criteria correlation and weighted aggregated sum product assessment- were used to transform the multiple-response optimization problem into a single-unique optimization problem and to elaborate a preference ranking among all the mixture designs. The most significant levels for acquiring the optimum overall response value were found to be 0.05% for fiber content and 5.00% for binder content and mixed filler with hydrated limeFunding: TheFORESEEproject has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No769373

    Prevalence of early childhood caries in non-fluoridated rural areas of Chile.

    Get PDF
    Introduction: Early Childhood Caries (ECC) constitutes a serious public health issue worldwide, especially in communities without water fluoridation. Objectives: To assess the prevalence of ECC in children 2 and 3 years old from rural preeschools without access to water fluoridation. Methods: A cross-sectional study to community level was performed during 2012. The eligible population was children 2 and 3 years old from rural preschools in non-fluoridated areas located in the Regions of the Araucanía, Los Ríos and Los Lagos. Four calibrated researchers (ICC= 0.83) determined the prevalence of dental caries on the criteria proposed by the WHO. The data was analyzed using the statisticals, chi-square test, t-test and logistic regression models. Results: The sample was constituted by 587 children of whom 53.32% had 2 years old and 52.47 were girls. The prevalence of ECC was 51.62% with a dmft index average of 2.53. The Region with the most prevalence was Araucania with a 52.79%. The variables that showed association were age, IHO-S and prevision (p<0.05). Conclusion: The prevalence of ECC in non-fluoridated areas is high
    corecore