937 resultados para image de la pensée


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7 hojas : fotografías a color.

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22 hojas : ilustraciones, fotografía a colo

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10 hojas : ilustraciones, fotografías

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ImageRover is a search by image content navigation tool for the world wide web. To gather images expediently, the image collection subsystem utilizes a distributed fleet of WWW robots running on different computers. The image robots gather information about the images they find, computing the appropriate image decompositions and indices, and store this extracted information in vector form for searches based on image content. At search time, users can iteratively guide the search through the selection of relevant examples. Search performance is made efficient through the use of an approximate, optimized k-d tree algorithm. The system employs a novel relevance feedback algorithm that selects the distance metrics appropriate for a particular query.

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ImageRover is a search by image content navigation tool for the world wide web. The staggering size of the WWW dictates certain strategies and algorithms for image collection, digestion, indexing, and user interface. This paper describes two key components of the ImageRover strategy: image digestion and relevance feedback. Image digestion occurs during image collection; robots digest the images they find, computing image decompositions and indices, and storing this extracted information in vector form for searches based on image content. Relevance feedback occurs during index search; users can iteratively guide the search through the selection of relevant examples. ImageRover employs a novel relevance feedback algorithm to determine the weighted combination of image similarity metrics appropriate for a particular query. ImageRover is available and running on the web site.

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Some WWW image engines allow the user to form a query in terms of text keywords. To build the image index, keywords are extracted heuristically from HTML documents containing each image, and/or from the image URL and file headers. Unfortunately, text-based image engines have merely retro-fitted standard SQL database query methods, and it is difficult to include images cues within such a framework. On the other hand, visual statistics (e.g., color histograms) are often insufficient for helping users find desired images in a vast WWW index. By truly unifying textual and visual statistics, one would expect to get better results than either used separately. In this paper, we propose an approach that allows the combination of visual statistics with textual statistics in the vector space representation commonly used in query by image content systems. Text statistics are captured in vector form using latent semantic indexing (LSI). The LSI index for an HTML document is then associated with each of the images contained therein. Visual statistics (e.g., color, orientedness) are also computed for each image. The LSI and visual statistic vectors are then combined into a single index vector that can be used for content-based search of the resulting image database. By using an integrated approach, we are able to take advantage of possible statistical couplings between the topic of the document (latent semantic content) and the contents of images (visual statistics). This allows improved performance in conducting content-based search. This approach has been implemented in a WWW image search engine prototype.

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BACKGROUND: Body image (BI) and body satisfaction may be important in understanding weight loss behaviors, particularly during the postpartum period. We assessed these constructs among African American and white overweight postpartum women. METHODS: The sample included 162 women (73 African American and 89 white) in the intervention arm 6 months into the Active Mothers Postpartum (AMP) Study, a nutritional and physical activity weight loss intervention. BIs, self-reported using the Stunkard figure rating scale, were compared assessing mean values by race. Body satisfaction was measured using body discrepancy (BD), calculated as perceived current image minus ideal image (BD<0: desire to be heavier; BD>0: desire to be lighter). BD was assessed by race for: BD(Ideal) (current image minus the ideal image) and BD(Ideal Mother) (current image minus ideal mother image). RESULTS: Compared with white women, African American women were younger and were less likely to report being married, having any college education, or residing in households with annual incomes >$30,000 (all p < 0.01). They also had a higher mean body mass index (BMI) (p = 0.04), although perceived current BI did not differ by race (p = 0.21). African Americans had higher mean ideal (p = 0.07) and ideal mother (p = 0.001) BIs compared with whites. African Americans' mean BDs (adjusting for age, BMI, education, income, marital status, and interaction terms) were significantly lower than those of whites, indicating greater body satisfaction among African Americans (BD(Ideal): 1.7 vs. 2.3, p = 0.005; BD(Ideal Mother): 1.1 vs. 1.8, p = 0.0002). CONCLUSIONS: Racial differences exist in postpartum weight, ideal images, and body satisfaction. Healthcare providers should consider tailored messaging that accounts for these racially different perceptions and factors when designing weight loss programs for overweight mothers.

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La información es el elemento primordial en una Institución, sea del carácter que sea. Fluye de cualquier departamento que la integra y esta información hay que recopilarla, ordenarla, sintetizarla, tratarla y por último y más relevante hay que distribuirla. No se puede retener ni ocultar, se debe canalizar para que todos los integrantes de esa empresa la conozcan, la entiendan, la asuman y la hagan suya. Es así como funcionan bien los organismos conociendo lo que trabajan, sus objetivos, sus límites, sus avances y sus logros. Los gabinetes de comunicación son el motor de la documentación. Gestionan los contenidos, crean archivos de datos y documentos y difunden la información, no solo entre los diferentes componentes de la empresa sino también entre los distintos estamentos de la sociedad, proyectando al exterior la imagen de la Institución para la que trabajan.

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En el presente trabajo se da el primer paso para la creación de una Filmoteca de Prácticas en la facultad de Ciencias de la Información de la Universidad Complutense de Madrid. El Patrimonio Fílmico se ve gravemente expuesto al paso del tiempo y el abandono por lo que se necesita un rescate urgente. Mediante un riguroso trabajo de investigación, en el que se estudian diferentes propuestas y normativas expuestas por organismos especializados, se redacta un manual de inicio. Se han investigado, diseñado y propuesto las herramientas básicas y útiles para poner en funcionamiento la primera Filmoteca de Prácticas en el ámbito universitario español.

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A partir del análisis de las relaciones entre sociología, fotografía y documentación se realiza un recorrido por algunas de las principales fotografías realizadas por Robert Capa durante la Guerra civil española.

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At the end of 1773 an Indian elephant, brought for the royal ménagerie at Aranjuez, was shown in the streets of Madrid. The resulting public fascination provoked by the intrusion of this exotic animal can be traced through poems (Tomás de Iriarte), short plays (Ramón de la Cruz), articles in the periodical press, popular and scientific prints representing the animal, and even in the costumbrista pastels of Lorenzo Tiepolo. The mythic and premodern knowledge of animal nature collides in a debate with the new scientific observation. In the final decades of the 18th century, the image of the captive elephant acquired in Europe a new symbolic meaning linked with the political fight against slavery. All these very different elements converge in Goya's Disparate de bestia.

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En este artículo presentamos los resultados y el análisis de uno de los objetivos del proyecto I+D+i aprobado por el Ministerio de Economía y Competitividad de España titulado Mediaciones audiovisuales en las relaciones entre escuela y familias inmigrantes. Concretamente, el dirigido a conocer las funciones que tienen las imágenes fotográficas en las relaciones de un grupo de padres inmigrantes en el colegio al que asisten sus hijos e hijas. Los datos presentados corresponden a las narraciones biográfico-culturales y visuales iniciadas en las aulas por estas familias junto a la tutora del grupo, y continuadas en sus contextos personal y social. Concluimos que las fotografías en los relatos han tenido las funciones de: fuente de información, soporte de análisis, reflexión y debate y, finalmente, medio para comunicar el conocimiento experiencial generado. Dentro de esta última, se han utilizado tres procedimientos que hemos denominado: denotativo autorreferencial, connotativo texto-visual y secuencial.