1,256 research outputs found

    Forecast analysis of optical waveguide bus performance

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    Elements to be considered in the design of a data bus include: architecture; data rate; modulation, encoding, detection; power distribution requirements; protocol, work structure; bus reliability, maintainability; interterminal transmission medium; cost; and others specific to application. Fiber- optic data bus considerations for a 32 port transmissive star architecture, are discussed in a tutorial format. General optical-waveguide bus concepts, are reviewed. The electrical and optical performance of a 32 port transmissive star bus, and the effects of temperature on the performance of optical-waveguide buses are examined. A bibliography of pertinent references and the bus receiver test results are included

    Reanalysis of the FEROS observations of HIP 11952

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    Aims. We reanalyze FEROS observations of the star HIP 11952 to reassess the existence of the proposed planetary system. Methods. The radial velocity of the spectra were measured by cross-correlating the observed spectrum with a synthetic template. We also analyzed a large dataset of FEROS and HARPS archival data of the calibrator HD 10700 spanning over more than five years. We compared the barycentric velocities computed by the FEROS and HARPS pipelines. Results. The barycentric correction of the FEROS-DRS pipeline was found to be inaccurate and to introduce an artificial one-year period with a semi-amplitude of 62 m/s. Thus the reanalysis of the FEROS data does not support the existence of planets around HIP 11952.Comment: 7 pages, 8 figures, 1 tabl

    Dynamics of gravity driven three-dimensional thin films on hydrophilic-hydrophobic patterned substrates

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    We investigate numerically the dynamics of unstable gravity driven three-dimensional thin liquid films on hydrophilic-hydrophobic patterned substrates of longitudinal stripes and checkerboard arrangements. The thin film can be guided preferentially on hydrophilic longitudinal stripes, while fingers develop on adjacent hydrophobic stripes if their width is large enough. On checkerboard patterns, the film fingering occurs on hydrophobic domains, while lateral spreading is favoured on hydrophilic domains, providing a mechanism to tune the growth rate of the film. By means of kinematical arguments, we quantitatively predict the growth rate of the contact line on checkerboard arrangements, providing a first step towards potential techniques that control thin film growth in experimental setups.Comment: 30 pages, 12 figure

    A GSM BASED Real Time system TO MONITOR Underwater Noise Pollution

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    Data on the verification and validation of segmentation and registration methods for diffusion MRI.

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    The verification and validation of segmentation and registration methods is a necessary assessment in the development of new processing methods. However, verification and validation of diffusion MRI (dMRI) processing methods is challenging for the lack of gold-standard data. The data described here are related to the research article entitled "Surface-driven registration method for the structure-informed segmentation of diffusion MR images" [1], in which publicly available data are used to derive golden-standard reference-data to validate and evaluate segmentation and registration methods in dMRI

    Modelo de Gestión Integrado para el lanzamiento de un nuevo producto: Caramelo mentolado 100% natural de maracuyá

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    The authors of this research paper present, at first, the analysis of the company “Canutos” in order to clarify its outlook to embark on the production of a new product: 100% natural passion fruit menthol candy. Afterwards, they show the methodology applied in the development of an integrated management model with four fundamental aspects for the product launch: technical, legal, administrative and financial, which met the interests and expectations of the company when enacted. In this work, part of a graduation project for the industrial engineering program from the Universidad Pontificia Bolivariana (Medellin) entitled: “Integrated management model for the launch of a new product: 100% natural passion fruit menthol candy”, 2010, a systematic study was performed on Excel, it was then modeled with financial management tools for the information collected from the industry.Los autores de este artículo de investigación presentan, en primer lugar, el análisis realizado a la empresa “Canutos” con el fin de esclarecer su panorama para incursionar en la producción de un nuevo producto: caramelo mentolado de maracuyá 100% natural; después, presentan la metodología aplicada en el desarrollo del modelo de gestión integrado con cuatro aspectos fundamentales: técnico, legal, administrativo y financiero para el lanzamiento del producto, el cual cumplió con los intereses y expectativas de la compañía al ser implementado. En este trabajo, perteneciente al proyecto de grado “Modelo de gestión integrado para el lanzamiento de un nuevo producto: caramelo mentolado 100% natural de maracuyá, 2010”, del programa en Ingeniería Industrial en la Universidad Pontificia Bolivariana (Medellín), se realizó una revisión sistemática en Excel y su modelación con herramientas de gestión financiera de la información recopilada en la industria.  &nbsp

    Modelo de Gestión Integrado para el lanzamiento de un nuevo producto: Caramelo mentolado 100% natural de maracuyá

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    The authors of this research paper present, at first, the analysis of the company “Canutos” in order to clarify its outlook to embark on the production of a new product: 100% natural passion fruit menthol candy. Afterwards, they show the methodology applied in the development of an integrated management model with four fundamental aspects for the product launch: technical, legal, administrative and financial, which met the interests and expectations of the company when enacted. In this work, part of a graduation project for the industrial engineering program from the Universidad Pontificia Bolivariana (Medellin) entitled: “Integrated management model for the launch of a new product: 100% natural passion fruit menthol candy”, 2010, a systematic study was performed on Excel, it was then modeled with financial management tools for the information collected from the industry.Los autores de este artículo de investigación presentan, en primer lugar, el análisis realizado a la empresa “Canutos” con el fin de esclarecer su panorama para incursionar en la producción de un nuevo producto: caramelo mentolado de maracuyá 100% natural; después, presentan la metodología aplicada en el desarrollo del modelo de gestión integrado con cuatro aspectos fundamentales: técnico, legal, administrativo y financiero para el lanzamiento del producto, el cual cumplió con los intereses y expectativas de la compañía al ser implementado. En este trabajo, perteneciente al proyecto de grado “Modelo de gestión integrado para el lanzamiento de un nuevo producto: caramelo mentolado 100% natural de maracuyá, 2010”, del programa en Ingeniería Industrial en la Universidad Pontificia Bolivariana (Medellín), se realizó una revisión sistemática en Excel y su modelación con herramientas de gestión financiera de la información recopilada en la industria.  &nbsp

    Under-reporting bicycle accidents to police in the COST TU1101 international survey: Cross-country comparisons and associated factors

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    Police crash reports are often the main source for official data in many countries. However, with the exception of fatal crashes, crashes are often underreported in a biased manner. Consequently, the countermeasures adopted according to them may be inefficient. In the case of bicycle crashes, this bias is most acute and it probably varies across countries, with some of them being more prone to reporting accidents to police than others. Assessing if this bias occurs and the size of it can be of great importance for evaluating the risks associated with bicycling. This study utilized data collected in the COST TU1101 action “Towards safer bicycling through optimization of bicycle helmets and usage”. The data came from an online survey that included questions related to bicyclists' attitudes, behaviour, cycling habits, accidents, and patterns of use of helmets. The survey was filled by 8655 bicyclists from 30 different countries. After applying various exclusion factors, 7015 questionnaires filled by adult cyclists from 17 countries, each with at least 100 valid responses, remained in our sample. The results showed that across all countries, an average of only 10% of all crashes were reported to the police, with a wide range among countries: from a minimum of 0.0% (Israel) and 2.6% (Croatia) to a maximum of a 35.0% (Germany). Some factors associated with the reporting levels were type of crash, type of vehicle involved, and injury severity. No relation was found between the likelihood of reporting and the cyclist's gender, age, educational level, marital status, being a parent, use of helmet, and type of bicycle. The significant under-reporting – including injury crashes that do not lead to hospitalization – justifies the use of self-report survey data for assessment of bicycling crash patterns as they relate to (1) crash risk issues such as location, infrastructure, cyclists' characteristics, and use of helmet and (2) strategic approaches to bicycle crash prevention and injury reduction.Fil: Shinar, D.. Ben Gurion University of the Negev; IsraelFil: Valero Mora, Pedro. Universidad de Valencia; EspañaFil: van Strijp Houtenbos, M.. Institute For Road Safety Research; Países BajosFil: Haworth, N.. Queensland University of Technology; AustraliaFil: Schramm, A.. Queensland University of Technology; AustraliaFil: de Bruyne, G.. Universiteit Antwerp; BélgicaFil: Cavallo, V.. No especifíca;Fil: Chliaoutakis, J.. No especifíca;Fil: Pereira Dias, Joao. Instituto Superior Tecnico; PortugalFil: Ferraro, Ottavia Eleonora. Universita Degli Studi Di Pavia; ItaliaFil: Fyhri, Aslak. No especifíca;Fil: Sajatovic, Anika Hursa. No especifíca;Fil: Kuklane, Kalev. Lund University; SueciaFil: Ledesma, Ruben Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Psicología Básica, Aplicada y Tecnología. Universidad Nacional de Mar del Plata. Facultad de Psicología. Instituto de Psicología Básica, Aplicada y Tecnología.; ArgentinaFil: Calvé Mascarell, Oscar. Ben Gurion University of the Negev; IsraelFil: Morandi, A.. Universita Degli Studi Di Pavia; ItaliaFil: Muser, Markus. No especifíca;Fil: Otte, Diettmar. No especifíca;Fil: Papadakaki, M.. No especifíca;Fil: Sanmartín, J.. Universidad de Valencia; EspañaFil: Dulf, D.. No especifíca;Fil: Saplioglu, M.. No especifíca;Fil: Tzamalouka, Georgia. No especifíca
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