818 resultados para knowledge based systems


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Se presenta un modelo para decidir los contenidos curriculares de la Organización del Conocimiento en carreras de Bibliotecología, Documentación y Ciencia de la Información, orientado principalmente al Mercosur. Para el diseño del modelo se tuvieron en cuenta los contenidos mínimos recomendados por los encuentros de directores y docentes de escuelas de Bibliotecología del Mercosur, la llamada corriente de ISKO y los aportes de distintos autores relacionados con ambas fuentes. El modelo consta de tres categorías primarias: fundamentos, aplicaciones y ética de la Organización del Conocimiento. Los fundamentos se consideran desde un abordaje multidimensional. Las aplicaciones se dividen en tres categorías primarias: a) construcción de sistemas de organización del conocimiento, b) descripción de contenido y c) gestión de calidad de la Organización del Conocimiento. La ética también se divide en tres categorías secundarias: compromiso ético, valores éticos y problemas éticos. El modelo debe entenderse como un molde vacío que necesita llenarse con los contenidos que decida cada carrera o cada espacio curricular y se espera que facilite la evaluación, actualización y comparación de esos contenidos. Tiene la limitación de basarse en las recomendaciones del Mercosur y la corriente de ISKO, que no son aceptadas por todos los especialistas

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El presente artículo tiene como propósito proponer la incorporación de la teoría administrativa denominada Gestión del Conocimiento (GC), en Bibliotecas Universitarias (BU). ¿El qué, el cómo y el para qué? Representa un reto de gestión que conlleva a la implementación de diversas estrategias para el cambio y la innovación (ECI). Hipotéticamente, el diseño de estrategias de gestión posibilita que la BU en los escenarios competitivos de la sociedad de conocimiento y el tercer entorno desarrolle nuevas competencias y directrices para el aprovechamiento de sus diversos recursos con eficiencia y logren alcanzar sus objetivos con eficacia. La innovación es otra de las variables que posibilita la transformación de los servicios que son ofertados a los usuarios, también denominados "socios estratégicos", bajo la visión de creatividad, sustentabilidad y bienestar

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Se realiza un análisis exploratorio del concepto de "garantía cultural", con el objetivo de caracterizar áreas futuras de investigación en torno al mismo. En primera instancia se analiza la noción genérica de 'garantía', tal como ha sido considerada en la Organización del Conocimiento. Se reseñan diversos tipos de garantías propuestas para legitimar la inclusión de terminología en sistemas de organización del conocimiento. Se cumple un análisis crítico del concepto de "cultura" y la manera en que distintas concepciones antropológicas, sociológicas y políticas confluyen en su construcción epistemológica. Se revisa y se problematiza el tratamiento de la garantía cultural en la literatura del área. Se valora su aporte en la construcción de identidades culturales, a través de elementos de diferenciación de la interpretación y la vivencia de la realidad. En particular se desarrolla la relación entre garantía cultural y cultura local. Se pondera la inserción del factor ético a través de la garantía cultura, en el desarrollo de esquemas de clasificación y en los procesos de clasificación e indización. Entre otras conclusiones, se establece la necesidad de explorar con mayor detenimiento las alternativas metodológicas que puedan sustentarse en esta concepción integradora y democratizadora en el ámbito de la Organización del Conocimiento

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El presente artículo tiene como propósito proponer la incorporación de la teoría administrativa denominada Gestión del Conocimiento (GC), en Bibliotecas Universitarias (BU). ¿El qué, el cómo y el para qué? Representa un reto de gestión que conlleva a la implementación de diversas estrategias para el cambio y la innovación (ECI). Hipotéticamente, el diseño de estrategias de gestión posibilita que la BU en los escenarios competitivos de la sociedad de conocimiento y el tercer entorno desarrolle nuevas competencias y directrices para el aprovechamiento de sus diversos recursos con eficiencia y logren alcanzar sus objetivos con eficacia. La innovación es otra de las variables que posibilita la transformación de los servicios que son ofertados a los usuarios, también denominados "socios estratégicos", bajo la visión de creatividad, sustentabilidad y bienestar

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Se presenta un modelo para decidir los contenidos curriculares de la Organización del Conocimiento en carreras de Bibliotecología, Documentación y Ciencia de la Información, orientado principalmente al Mercosur. Para el diseño del modelo se tuvieron en cuenta los contenidos mínimos recomendados por los encuentros de directores y docentes de escuelas de Bibliotecología del Mercosur, la llamada corriente de ISKO y los aportes de distintos autores relacionados con ambas fuentes. El modelo consta de tres categorías primarias: fundamentos, aplicaciones y ética de la Organización del Conocimiento. Los fundamentos se consideran desde un abordaje multidimensional. Las aplicaciones se dividen en tres categorías primarias: a) construcción de sistemas de organización del conocimiento, b) descripción de contenido y c) gestión de calidad de la Organización del Conocimiento. La ética también se divide en tres categorías secundarias: compromiso ético, valores éticos y problemas éticos. El modelo debe entenderse como un molde vacío que necesita llenarse con los contenidos que decida cada carrera o cada espacio curricular y se espera que facilite la evaluación, actualización y comparación de esos contenidos. Tiene la limitación de basarse en las recomendaciones del Mercosur y la corriente de ISKO, que no son aceptadas por todos los especialistas

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Se realiza un análisis exploratorio del concepto de "garantía cultural", con el objetivo de caracterizar áreas futuras de investigación en torno al mismo. En primera instancia se analiza la noción genérica de 'garantía', tal como ha sido considerada en la Organización del Conocimiento. Se reseñan diversos tipos de garantías propuestas para legitimar la inclusión de terminología en sistemas de organización del conocimiento. Se cumple un análisis crítico del concepto de "cultura" y la manera en que distintas concepciones antropológicas, sociológicas y políticas confluyen en su construcción epistemológica. Se revisa y se problematiza el tratamiento de la garantía cultural en la literatura del área. Se valora su aporte en la construcción de identidades culturales, a través de elementos de diferenciación de la interpretación y la vivencia de la realidad. En particular se desarrolla la relación entre garantía cultural y cultura local. Se pondera la inserción del factor ético a través de la garantía cultura, en el desarrollo de esquemas de clasificación y en los procesos de clasificación e indización. Entre otras conclusiones, se establece la necesidad de explorar con mayor detenimiento las alternativas metodológicas que puedan sustentarse en esta concepción integradora y democratizadora en el ámbito de la Organización del Conocimiento

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This paper proposes evidences for linking innovation and knowledge exchanges in developing economies towards a comprehensive theory of new economic geography in the knowledge based spatial economy. Firms which dispatched engineers to customers achieved more innovations than firms which did not. Mutual sharing of knowledge also stimulates innovations. A just-in-time relationship is effective for dealing with upgrading production process. But such strong complementarities with partners are not effective for product innovation.. These evidences support the hypothesis that face-to-face communication and complementarities among production linkages have different roles in knowledge creation.

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This study presents a robust method for ground plane detection in vision-based systems with a non-stationary camera. The proposed method is based on the reliable estimation of the homography between ground planes in successive images. This homography is computed using a feature matching approach, which in contrast to classical approaches to on-board motion estimation does not require explicit ego-motion calculation. As opposed to it, a novel homography calculation method based on a linear estimation framework is presented. This framework provides predictions of the ground plane transformation matrix that are dynamically updated with new measurements. The method is specially suited for challenging environments, in particular traffic scenarios, in which the information is scarce and the homography computed from the images is usually inaccurate or erroneous. The proposed estimation framework is able to remove erroneous measurements and to correct those that are inaccurate, hence producing a reliable homography estimate at each instant. It is based on the evaluation of the difference between the predicted and the observed transformations, measured according to the spectral norm of the associated matrix of differences. Moreover, an example is provided on how to use the information extracted from ground plane estimation to achieve object detection and tracking. The method has been successfully demonstrated for the detection of moving vehicles in traffic environments.

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Purpose – The strategic management literature lacks a comprehensive explanation as to why seemingly similar business models in the same industry perform differently. This paper strives to explain this phenomenon. Design/methodology/approach – The model is conceptualized and accompanied by a case study on the airline industry to explain knowledge brokerage that creates value from the effective utilization of knowledge resources acquired from intra- and inter-firm environments. Findings – The model explains a cyclical view of business model flexibility in which the knowledge-based resource accumulation of the business model is spread across the intra- and inter-firm environments. Knowledge brokerage strategies from the inter- and intra-firm environments result in improved performance of the business model. The flexibility that the business model acquires is determined by how efficiently resource accumulation is aligned with its external environment. Originality/value – The paper effectively integrates the concepts of knowledge brokerage and business models from a resource accumulation-based view and simultaneously arrives at the performance heterogeneity of seemingly similar business models within the same industry. It has performance implications for firms that start out without any distinct resources of their own, or that use an imitated business model, to attain better performance through business model evolution aligned with successful knowledge brokerage strategies. It adds to the resource accumulation literature by explaining how resources can be effectively acquired to create value.

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In this paper, we propose a solution to an NP-complete problem, namely the "3-colorability problem", based on a network of polarized processors. Our solution is uniform and time efficient.

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A new design for a photovoltaic concentrator, the most recent advance based on the Kohler concept, is presented. The system is mirror-based, and with geometry that guaranties a maximum sunlight collection area (without shadows, like those caused by secondary stages or receivers and heat-sinks in other mirror-based systems). Designed for a concentration of 1000x, this off axis system combines both good acceptance angle and good irradiance uniformity on the solar cell. The advanced performance features (concentration-acceptance products ?CAP- about 0.73 and affordable peak and average irradiances) are achieved through the combination of four reflective folds combined with four refractive surfaces, all of them free-form, performing Köhler integration 2 . In Köhler devices, the irradiance uniformity is not achieved through additional optical stages (TIR prisms), thus no complex/expensive elements to manufacture are required. The rim angle and geometry are such that the secondary stage and receivers are hidden below the primary mirrors, so maximum collection is assured. The entire system was designed to allow loose assembly/alignment tolerances (through high acceptance angle) and to be manufactured using already well-developed methods for mass production, with high potential for low cost. The optical surfaces for Köhler integration, although with a quite different optical behavior, have approximately the same dimensions and can be manufactured with the same techniques as the more traditional secondary optical elements used for concentration (typically plastic injection molding or glass molding).

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In recent years, remote sensing imaging systems for the measurement of oceanic sea states have attracted renovated attention. Imaging technology is economical, non-invasive and enables a better understanding of the space-time dynamics of ocean waves over an area rather than at selected point locations of previous monitoring methods (buoys, wave gauges, etc.). We present recent progress in space-time measurement of ocean waves using stereo vision systems on offshore platforms, which focus on sea states with wavelengths in the range of 0.01 m to 1 m. Both traditional disparity-based systems and modern elevation-based ones are presented in a variational optimization framework: the main idea is to pose the stereoscopic reconstruction problem of the surface of the ocean in a variational setting and design an energy functional whose minimizer is the desired temporal sequence of wave heights. The functional combines photometric observations as well as spatial and temporal smoothness priors. Disparity methods estimate the disparity between images as an intermediate step toward retrieving the depth of the waves with respect to the cameras, whereas elevation methods estimate the ocean surface displacements directly in 3-D space. Both techniques are used to measure ocean waves from real data collected at offshore platforms in the Black Sea (Crimean Peninsula, Ukraine) and the Northern Adriatic Sea (Venice coast, Italy). Then, the statistical and spectral properties of the resulting observed waves are analyzed. We show the advantages and disadvantages of the presented stereo vision systems and discuss future lines of research to improve their performance in critical issues such as the robustness of the camera calibration in spite of undesired variations of the camera parameters or the processing time that it takes to retrieve ocean wave measurements from the stereo videos, which are very large datasets that need to be processed efficiently to be of practical usage. Multiresolution and short-time approaches would improve efficiency and scalability of the techniques so that wave displacements are obtained in feasible times.

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This paper presents a description of our system for the Albayzin 2012 LRE competition. One of the main characteristics of this evaluation was the reduced number of available files for training the system, especially for the empty condition where no training data set was provided but only a development set. In addition, the whole database was created from online videos and around one third of the training data was labeled as noisy files. Our primary system was the fusion of three different i-vector based systems: one acoustic system based on MFCCs, a phonotactic system using trigrams of phone-posteriorgram counts, and another acoustic system based on RPLPs that improved robustness against noise. A contrastive system that included new features based on the glottal source was also presented. Official and postevaluation results for all the conditions using the proposed metrics for the evaluation and the Cavg metric are presented in the paper.

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Remote sensing imaging systems for the measurement of oceanic sea states have recently attracted renovated attention. Imaging technology is economical, non-invasive and enables a better understanding of the space-time dynamics of ocean waves over an area rather than at selected point locations of previous monitoring methods (buoys, wave gauges, etc.). We present recent progress in space-time measurement of ocean waves using stereo vision systems on offshore platforms. Both traditional disparity-based systems and modern elevation-based ones are presented in a variational optimization framework: the main idea is to pose the stereoscopic reconstruction problem of the surface of the ocean in a variational setting and design an energy functional whose minimizer is the desired temporal sequence of wave heights. The functional combines photometric observations as well as spatial and temporal smoothness priors. Disparity methods estimate the disparity between images as an intermediate step toward retrieving the depth of the waves with respect to the cameras, whereas elevation methods estimate the ocean surface displacements directly in 3-D space. Both techniques are used to measure ocean waves from real data collected at offshore platforms in the Black Sea (Crimean Peninsula, Ukraine) and the Northern Adriatic Sea (Venice coast, Italy). Then, the statistical and spectral properties of the resulting observed waves are analyzed. We show the advantages and disadvantages of the presented stereo vision systems and discuss the improvement of their performance in critical issues such as the robustness of the camera calibration in spite of undesired variations of the camera parameters.

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The design of a Final Assembly Line (FAL) is carry out in the product industrialization activity. The phase dealing with the definition of conceptual solutions is characterized by depending heavily on the personnel experience and being time-consuming. To enhance such process, it is proposed a development of a knowledge based software application to assist designers in the definition of scenarios and to generate conceptual FAL alternatives. Both the scenario and the generated FAL solution are part of the industrialization digital mock-up (IDMU). A commercial software application used in the aircraft programmes and supporting the IDMU concepts of: Product, Process and Resource; was selected to implement a software prototype. This communication presents the adopted methodological approach and the architecture of the developed application.