126 resultados para Inventor


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We study the functional specialization whereby some countries contribute relatively more inventors vs. organizations in the production of inventions at a global scale. We propose a conceptual framework to explain this type of functional specialization, which posits the presence of feedbacks between two distinct sub-systems, each one providing inventors and organizations. We quantify the phenomenon by means of a new metric, the “inventor balance”, which we compute using patent data. We show that the observed imbalances, which are often conspicuous, are determined by several factors: the innovativeness of a country relative to its level of economic development, relative factor endowments, the degree of technological specialization and, last, cultural traits. We argue that the “inventor balance” is a useful indicator for policy makers, and its routine analysis could lead to better informed innovation policies.

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El fraile Pedro Ponce de León, además de descubridor de La Florida, es la persona a quien se atribuye por vez primera la idea de crear un sistema para que los sordomudos pudieran comunicarse y expresarse. Se pretende arrojar luz sobre la vida y obra de este personaje del siglo XVI, ya que se considera que hay un gran desconocimiento, sobre todo en su aportación para posibilitar la comunicación de los sordomudos. Se hace un análisis de la biografía de Fray Pedro Ponce de León, y de los discípulos y seguidores que continúan su labor a su muerte. En el siglo XVII las aportaciones de Ponce de León tan sólo tienen eco en el extranjero. Pero contactos posteriores con países extranjeros llevaron a la recuperación de las prácticas de Pedro Ponce de León en España y posterior perfeccionamiento.

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O objetivo dessa pesquisa é ampliar o conhecimento a respeito do inventor independente ou individual enquanto inovador ou empreendedor, principalmente o inventor procedente de laboratórios de P&D públicos e privados, e investigar a condição profissional e outras características gerais dos inventores brasileiros em comparação com as encontradas em pesquisas semelhantes realizadas em outros países. Por último, serão analisados os instrumentos governamentais para auxiliar esse tipo de inventor.

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Pós-graduação em Engenharia Mecânica - FEG

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Through a current and practical approach, this work aims to demonstrate how a speed reducer would behave in a real situation, but using a digital environment. Therefore, first, it was made the modeling of each component of the reducer, driven by gears. Completed the modeling of the components, it was possible to realize the connection between them and thus characterize the work as a speed reducer; and using properly sized and shaped reducer, we could finally demonstrate the operation of the same, the very Autodesk Inventor ™ 2014 environment

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Through a current and practical approach, this work aims to demonstrate how a speed reducer would behave in a real situation, but using a digital environment. Therefore, first, it was made the modeling of each component of the reducer, driven by gears. Completed the modeling of the components, it was possible to realize the connection between them and thus characterize the work as a speed reducer; and using properly sized and shaped reducer, we could finally demonstrate the operation of the same, the very Autodesk Inventor ™ 2014 environment

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Grid (or sieve) therapy ("Gitter-" oder "Siebtherapie"), spatially fractionated kilo- and megavolt X-ray therapy, was invented in 1909 by Alban Köhler, a radiologist in Wiesbaden, Germany. He tested it on several patients before 1913 using approximately 60-70kV Hittorf-Crookes tubes. Köhler pushed the X-ray tube's lead-shielded housing against a stiff grid of 1 mm-square iron wires woven 3.0-3.5mm on center, taped tightly to the skin over a thin chamois. Numerous islets unshielded by iron in the pressure-blanched skin were irradiated with up to about 6 erythema doses (ED). The skin was then thoroughly cleansed, disinfected, and bandaged; delayed punctate necrosis healed in several weeks. Although grid therapy was disparaged or ignored until the 1930s, it has been used successfully since then to shrink bulky malignancies. Also, advanced cancers in rats and mice have been mitigated or ablated using Köhler's concept since the early 1990s by unidirectional or stereotactic exposure to an array of nearly parallel microplanar (25-75μm-wide) beams of very intense, moderately hard (median energy approximately 100 keV) synchrotron-generated X rays spaced 0.1-0.4mm on center. Such beams maintain sharp edges at high doses well beneath the skin yet confer little toxicity. They could palliate some otherwise intractable malignancies, perhaps in young children too, with tolerable sequelae. There are plans for such studies in larger animals.

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Afínales del siglo XIX se empezó a construir la Ciudad Lineal, un proveció Innovador formulado desde la iniciativa privada en el que se incorporarían los adelantos técnicos del momento mediante la creación de un tejido urbano que ofreciera mayor calidad de vida a sus habitantes. Su artífice, Arturo Soria y Mata, fue a la vez ideólogo de la propuesta y promotor, al menos en parte, a través de la Compañía Metropolitana de Urbanización

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Inclui notas explicativas e bibliográficas.

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Cover title.

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"Addenda.--May, 1838": p. [369]-380; "Addenda.--January, 1840": p. [381]-385.