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Sample records for system velocity-motor ventajas

  1. Advantages and disadvantages in the use of a variable system velocity-motor; Ventajas y desventajas en el uso de un sistema variador de velocidad-motor

    Energy Technology Data Exchange (ETDEWEB)

    Nunez Perez, J. [Baldor de Mexico (Mexico)

    1997-12-31

    At present every time is more costly to generate the electric power utilized in all of the aspects of our society. The energy savings by means of a variable velocity device is focussed to the industrial sector, where the electric motor consumes a significant part of the total electricity utilized. The electric power suffers losses right from its generation stage, then through the transmission stage by means of the distribution networks and its conversion into mechanical energy. From these losses the more important ones are the first and the last stage, therefore the end users have a great savings potential by optimizing their electric power consumption. Evidently, the use of variable velocity devices in A.C. (also known as inverters o frequency variators) as well as in D.C. or rectifiers, have disadvantages, such as the generation of harmonics and noise on the power transmission lines inside the factory as well as in the city power lines. This paper discusses the savings that can be obtained by he use of these devices and how to counteract their disadvantages. [Espanol] En la actualidad es cada vez mas costoso producir la energia electrica que se utiliza en todos los aspectos de nuestra sociedad. El enfoque de ahorro de energia usando un variador de velocidad para motores, sera el sector industrial, donde los motores electricos constituyen una parte importante del consumo de electricidad. La energia electrica sufre perdidas desde su etapa de generacion, en su etapa de transmision por medio de redes de distribucion y en su transformacion a energia mecanica. De estas perdidas, las mas cuantiosas son la primera y la ultima etapa, por lo que los usuarios finales tienen un gran potencial de ahorro si optimizan su consumo de energia electrica. Por supuesto que el uso de variadores de velocidad tanto de C.A. (tambien conocidos como inversores o variadores de frecuencia), como de C.D. o rectificadores, tiene algunas desventajas, tal es el caso de la generacion de armonicas y ruido en las lneas de transmision tanto interiores a una planta o como a nivel local en una poblacion. En el presente articulo se estudiara que ahorros se pueden obtener usando estos equipos y como contrarrestar las desventajas de los mismos.

  2. Comparison between refrigeration systems: advantages, disadvantages and environmental impact; Comparacion entre sistemas de refrigeracion: ventajas, desventajas y impacto ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Aguilo, Roberto Ricardo [CIAR, Congreso Iberoamericano de Aire Acondicionado y Refrigeracion, Buenos Aires (Argentina)]. E-mail: rraguilo@ciudad.com.ar

    2000-07-01

    This work perform a comparison among flow control systems with distinct cooling fluids, including the alternative of secondary cooling fluid, for evaluation of advantages and disadvantages of each system, from the technical, economical and environment impact view points.

  3. Ventajas del uso de la inyección electrónica en Cuba para vehículos diesel ligeros. // Advantages of injection electronic control systems for cars with Diesel engines.

    Directory of Open Access Journals (Sweden)

    J. L. Reyes González

    2002-05-01

    Full Text Available Se presenta un análisis sobre las ventajas que brinda el control electrónico en la inyección Diesel en vehículos ligeros enfunción de las condiciones de clima y explotación en nuestro país. En nuestro trabajo se hace un análisis experimental y sedemuestra la influencia notable que presenta esta novedosa técnica en la contaminación ambiental y el consumo decombustible.Palabras claves: Inyección Diesel, control electrónico, contaminación ambiental, gases de escape.______________________________________________________________________Abstract.This paper deals with the advantages of the electronic control systems in Diesel engines in cars, taking intoconsideration the weather and exploitation conditions in our country. The experimental analysis shows the influence ofelectronic injections systems in the fuel consumption and the environmental impact of the exhaust gases.Key words: Diesel inyection, electronic control, ambiental pollution, exhaust gases.

  4. Medicina basada en la evidencia (MBE: Ventajas

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    L.M. Junquera

    2003-10-01

    Full Text Available La Medicina basada en la Evidencia (MBE se define como un proceso cuyo objetivo es la selección de los mejores argumentos científicos para la resolución de los problemas que la práctica médica cotidiana plantea. Filosóficamente es un nuevo paradigma (verificacionista, que se ha extendido a todas las profesiones sanitarias (Cirugía Basada en la Evidencia, Odontología Basada en la Evidencia, etc., soportado por los avances tecnológicos. Aunque sus ventajas son evidentes, también se han reconocido limitaciones, especialmente en lo concerniente a la práctica quirúrgica. En el presente trabajo se revisan los fundamentos y principales ventajas de la MBE.Evidence Based Medicine (EBM is defined as a process whose objective is the selection of the best scientific arguments for the resolution of problems in the medical practice. Phylosophically, it is a new paradigm that has been extended to all the sanitary professions (Evidence Based Surgery, Evidence Based Dentistry, etc., sustained by the technological advances. Although their advantages are evident, also there have been recognized limitations, specially concerning the surgical practice. At the present work the bases and the main advantages of the EBM are checked.

  5. Ventaja de jugar en casa en voleibol de alto rendimiento

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    Rui Marcelino

    2009-01-01

    Full Text Available En este estudio se ha pretendido estudiar la ventaja en casa en el Voleibol de alto rendimiento, apoyándonos en las estadísticas de los partidos que más pueden explicar ese fenómeno. Se han analizado 65.949 acciones de juego seleccionadas de la Liga Mundial 2005. El instrumento de observación que se ha elaborado es una combinación de formato de campo con sistemas de categorías. Los datos se han obtenido mediante el "Volleyball Information System" y se han analizado mediante la prueba t de Student, y la prueba ji-cuadrado. Los resultados demuestran que hay ventaja en casa en Voleibol (57,5% de victorias jugando en casa. Las estadísticas del ataque (t= 2.49, p = 0.01, del servicio (t= -2.18, p= 0.03, de la recepción (t= 16.74, p<0.001 y de la distribución (t= 2.03, p= 0.04 muestran rendimientos superiores para los equipos que juegan en casa. No se han encontrado diferencias en el rendimiento del bloqueo (t= -0.25, p= 0.80 y la defensa (t= 0.11, p= 0.92 entre los juegos disputados en casa y los disputados fuera.

  6. INNOVACIÓN: FACTOR CLAVE PARA LOGRAR VENTAJAS COMPETITIVAS

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    Luis Mathison

    2007-07-01

    Full Text Available El presente artículo ha sido elaborado con la finalidad de mostrar a la innovación como un factor organizacional que permite el logro de ventajas competitivas. Para ello han sido consultados diversas referencias teóricas que permitieron definir el concepto de ventajas competitivas, de innovación, el proceso innovador, su influencia sobre la cadena de valor de la organización y la gestión de la innovación, para llegar así, de manera sistemática, a una propuesta sobre los principales aspectos a considerar en el proceso de innovación como factor importante en el logro de ventajas competitivas.

  7. Las TIC como fuente de ventaja competitiva en las PYMES

    OpenAIRE

    Álvaro Fernando Moncada Niño; Martha Lucía Oviedo Franco

    2013-01-01

    Desde su aparición, las Tecnologías de la Información y las Comunicaciones (TIC) se han convertido en un recurso fundamental de las empresas para competir en la mayoría de las industrias, generalizando el planteamiento de que son fuente de ventaja competitiva. Pero realmente, ¿cuándo las TIC son fuente potencial de ventaja competitiva para las pymes? ¿Bajo qué condiciones se logra que contribuyan a generar valor y mejorar su posición competitiva? ¿Qué características deben cumplir para alcanz...

  8. Las TIC como fuente de ventaja competitiva en las PYMES

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    Álvaro Fernando Moncada Niño

    2013-06-01

    Full Text Available Desde su aparición, las Tecnologías de la Información y las Comunicaciones (TIC se han convertido en un recurso fundamental de las empresas para competir en la mayoría de las industrias, generalizando el planteamiento de que son fuente de ventaja competitiva. Pero realmente, ¿cuándo las TIC son fuente potencial de ventaja competitiva para las pymes? ¿Bajo qué condiciones se logra que contribuyan a generar valor y mejorar su posición competitiva? ¿Qué características deben cumplir para alcanzar y sustentar la Ventaja Competitiva? Este documento basado en la Teoría de los Recursos y Capacidades (TRC responde estas preguntas y presenta al análisis de recurso Valioso, Raro, Inimitable y Organización (VRIO como herramienta para la determinación del potencial y valor que las TIC pueden alcanzar en las pymes y cómo pueden contribuir a que la empresa alcance ventajas competitivas sostenibles, en complemento de sus recursos y capacidades organizacionales.

  9. Las TIC como fuente de ventaja competitiva en las PYMES

    Directory of Open Access Journals (Sweden)

    Álvaro Fernando Moncada Niño

    2013-07-01

    Full Text Available Desde su aparición, las Tecnologías de la Información y las Comunicaciones (TIC se han convertido en un recurso fundamental de las empresas para competir en la mayoría de las industrias, generalizando el planteamiento de que son fuente de ventaja competitiva. Pero realmente, ¿cuándo las TIC son fuente potencial de ventaja competitiva para las pymes? ¿Bajo qué condiciones se logra que contribuyan a generar valor y mejorar su posición competitiva? ¿Qué características deben cumplir para alcanzar y sustentar la Ventaja Competitiva? Este documento basado en la Teoría de los Recursos y Capacidades (TRC responde estas preguntas y presenta al análisis de recurso Valioso, Raro, Inimitable y Organización (VRIO como herramienta para la determinación del potencial y valor que las TIC pueden alcanzar en las pymes y cómo pueden contribuir a que la empresa alcance ventajas competitivas sostenibles, en complemento de sus recursos y capacidades organizacionales.

  10. Propiedades, ventajas e inconvenientes de los materiales utilizados en supercondensadores

    OpenAIRE

    Calvo, E.; Arenillas, A.; Menéndez, J.; González, M.; Viera, J.

    2009-01-01

    Este trabajo recoge una visión general de las propiedades, ventajas e inconvenientes de los principales materiales usados en los electrodos de los condensadores electroquímicos (también denominados supercondensadores). La elección de estos materiales tiene una enorme influencia en las características finales del dispositivo electroquímico. Entre los materiales de electrodo disponibles para su aplicación en supercondensadores se incluyen los materiales porosos basados en carbón, los óxidos de ...

  11. Advantages and Limitations of BiRads''tm System Application in Clinical Practice; Ventajas y limitaciones de la aplicacion del sistema BI-RADS''TM en la practica clinica

    Energy Technology Data Exchange (ETDEWEB)

    Torres Tabanera, M. [Hospital de la Rioja. Logrono (Spain); Acebal Blanco, M. M. [Hospital Costa del Sol. Marbella (Spain)

    2004-07-01

    The BiRads''Tm system (Breast-Imaging Report and Database System) was created by the American College of Radiology in 1992 with the participation of other American scientific societies. It is a quality assurance tool designed to standardize mammographic reports, reduce confusion in the interpretation of breast images and facilitate the monitoring of results. It consists of five sections: breast Imaging Lexicon, Reporting System, Follow-up and Outcome Monitoring, National Mammography Database and Appendices. It was designed in order to create a common lexicon, universally accepted by breast pathology specialists, which would standardize both content and format of mammographic reports, as well as constitute a tool for continuing quality improvement. However, these promising objectives give rise to some serious controversies when sufficient experience is gained in a daily clinical use of the system. In this study, the advantages and contributions of Bi-Rads''TM system use is reviewed. Drawbacks are also cited, based on then years experience, with regard to lexicon, categories and recommendations. (Author)

  12. Auge y declive de la ventaja bilingüe: un estudio bibliométrico

    OpenAIRE

    Víctor A. Sánchez Azanza; Raúl López Penadés; Daniel Adrover-Roig

    2018-01-01

    El fenómeno de la ventaja bilingüe (teoría que propone que los bilingües desarrollan mejores capacidades cognitivas debido al entrenamiento que supone usar dos lenguajes a diario) genera debate entre los científicos que lo investigan. En un estudio reciente hemos mostrado que se ha producido un cambio de tendencia en la publicación de artículos en este ámbito de la ciencia cognitiva, de modo que los artículos en contra de la existencia de esta ventaja superan ya a los que la defienden. Discut...

  13. Biomarcadores para fibrosis hepática, avances, ventajas y desventajas

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    A. Cequera

    2014-07-01

    En este trabajo se describen los biomarcadores empleados actualmente para el estudio de la fibrosis hepática en humanos, incluyendo sus ventajas y desventajas y la implementación de tecnologías de nueva generación, y la evaluación de las posibilidades de su empleo para el diagnóstico.

  14. Entorno y desarrollo de ventajas competitivas: esquema conceptual para analizar el entorno de las empresas

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    Carlos Alberto Restrepo R.

    2010-12-01

    Full Text Available Desarrollar ventajas competitivas requiere que las empresas estén en capacidad de monitorear y analizar el entorno. Este artículo presenta una propuesta conceptual para analizar el entorno de las empresas de una manera integral. Se presenta una revisión de la literatura que relaciona la estrategia y el entorno, así como la literatura que explora el papel del entorno como determinante de la localización, en particular lo que tiene que ver con el efecto país. El artículo sugiere que se debe considerar, por una parte, el entorno inmediato de las empresas y, por otra, el entorno institucional. El impacto del entorno es relevante en cuanto permite a las empresas desarrollar ventajas basadas en la innovación.

  15. Las estrategias de marketing en tiendas virtuales y las ventajas competitivas: un estudio de caso

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    Vinícius Silva Pereira

    2011-09-01

    Full Text Available Este artículo tiene como objetivo identificar y analizar el mix de marketing de Submarino.com y las ventajas competitivas conferidas por ésta. Se realizó un estudio de caso de Submarino.com, una compañía líder en ventas en Internet de Brasil, dentro de un enfoque cualitativo. Se observó que la forma en que el Submarino utiliza el mix de marketing está en línea con su visión estratégica declarada. Así que la empresa puede diferenciarse de la competencia y establecer barreras a la entrada de nuevos competidores, obteniendo una ventaja competitiva como: el pionero, una red de relaciones con proveedores y clientes, el surtido de productos, entre otros.

  16. Ventajas del ingreso en el hogar como forma de atención ambulatoria

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    Isnoel Saura de la Torre

    1998-10-01

    Full Text Available Se ofrece una revisión actualizada sobre las ventajas que ofrece el ingreso en el hogar como forma de atención ambulatoria, para el paciente, la familia, la comunidad, los profesionales de la salud y el Estado; donde se exponen 15 ventajas sacadas de la literatura nacional y extranjera con un total de 30 referencias bibliográficas. Puede servir de marco teórico para incentivar la realización de investigaciones para su desarrolloAn updated review on the advantages of home admission as a form of ambulatory care for the patient, the family, the community, the health professionals and the State is made. 15 advantages obtained from the national and foreign literature with a total of 30 bibliographic references are put into the readers’ consideration. This may be used a theoretical basis to encourage research for developing this type of admission

  17. Los gremios económicos y su influencia en la creación de ventajas competitivas sectoriales

    OpenAIRE

    López Padilla, Carlos Andrés

    2006-01-01

    La presente investigación se centra en un discernimiento teórico sobre el papel de los gremios económicos y su influencia en la creación de ventajas competitivas sectoriales, a la luz de la teoría de la ventaja competitiva y las teorías microeconómicas de mercado, presentando herramientas teóricas que inciden en la propuesta de modelos de gestión orientados a la creación sostenimiento y avance de las ventajas competitivas sectoriales. Los principales disertaciones aquí desarrolladas se centra...

  18. Capital intelectual y ventajas competitivas en pymes basadas en recursos naturales de Latinoamérica

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    Carlos María Fernández-Jardón

    2016-03-01

    Full Text Available El enfoque de capital intelectual sugiere que este es fuente de ventajas competitivas. Las pequeñas y medianas empresas (pymes basadas en recursos naturales son una importante fuente de crecimiento en las economías latinoamericanas; sin embargo, presentan limitaciones de capital intelectual, lo que puede afectar su competitividad. Este trabajo analiza el proceso de generación de ventajas competitivas en estas pymes y, de modo especial, cuál es el efecto de los diferentes componentes de capital intelectual sobre el desempeño empresarial. El modelo teórico se estudia para el caso de pymes madereras de Oberá (Argentina. Los resultados sugieren que las pymes basadas en recursos naturales utilizan el capital intelectual junto con otros recursos para generar capacidades organizativas que, unidas al territorio, afectan a sus factores estratégicos, lo que les permite obtener mejores resultados. Dentro de ese modelo, se determinan elementos del capital humano (la actitud, la formación y las capacidades del personal, del capital estructural (la cultura la tecnología y la organización interna de la empresa y del capital relacional (las relaciones con clientes y proveedores, la cooperación y la imagen de la empresa. Estos elementos mejoran las capacidades organizativas que son fuente de ventaja competitiva.

  19. Ventajas comparativas en el comercio agroalimentario, México y Estados unidos 2007-2011

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    Carlos Ricardo Menéndez Gámiz

    2013-06-01

    Full Text Available En este artículo se realiza una revisión del estado actual de las ventajas comparativas de México y Estados Unidos en el mercado agroalimentario mundial. Se recurre a las ventajas comparativas, como una herramienta de la teoría económica, aplicada en el análisis de los diez capítulos agropecuarios y catorce agroalimentarios del Sistema armonizado del comercio internacional (HS por sus siglas en inglés, para el período 2007 a 2011. Se encontró que en México hay 8 capítulos con Ventaja comparativa, y en Estados Unidos 10 de los 24. Para México el escenario es desfavorable en relación con la economía agrícola más grande del mundo, cuando en junio del 2013 se propuso apoyo por 890 mil millones de dólares para la “Farm Bill” 2014-2018 en EE.UU.

  20. Variables críticas en las ventajas competitivas de restaurantes gourmet, La Serena, Chile

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    Segundo Ricardo Cabana Villca

    2015-12-01

    Full Text Available La investigación se centró en analizar las variables que influyen en el logro de las ventajas competitivas en empresas pertenecientes al mercado gastronómico gourmet en La Serena, Chile. Para esto se construyó un modelo que relaciona la calidad de servicio, satisfacción, lealtad, vínculo relacional y ventaja competitiva, creando hipótesis entre las variables y validándolas con una muestra significativa de clientes. Para contrastar las hipótesis se utilizó el método de modelos estructurales a través del método basado en covarianza (MBC. Concluyendo que la ventaja competitiva en negocios de restaurante gourmet si bien depende significativamente de la lealtad de los clientes, esto mismo provoca que sea relevante que exista una gestión proactiva sistémica, centrada en la calidad de servicio y la satisfacción que se genera. Como consecuencia de lo anterior, además debe lograr un vínculo relacional con el cliente como consecuencia de la lealtad del mismo. Por lo tanto, en esta industria las empresas sólo tendrán un crecimiento sostenible sí la lealtad del cliente es un activo que asume un rol de cliente socio que contribuye en la creación de una propuesta de valor innovadora

  1. SOBRE LAS VENTAJAS DE LA ALIANZA DEL PACÍFICO PARA COLOMBIA

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    Iván Alejandro Trujillo Acosta

    2014-01-01

    Full Text Available La Alianza del Pacífico (AP es un área de integración de interés en las relaciones internacionales. No obstante, existe un vacío en la literatura sobre las ventajas de ésta para la política exterior de Colombia. Este artículo busca analizar las ventajas de la AP para Colombia. Se defiende la idea que la AP ofrece ventajas para la inserción internacional de Colombia basadas tanto en las características de esa área de integración como en las oportunidades que ofrece para su política exterior. La AP es un área de integración que tiene en sus instituciones una agenda definida de integración, la cosecha temprana de las negociaciones, el seguimiento a las cumbres y una presidencia pro témpore eficaz. Por otra parte, le ofrece a Colombia un área de integración sin tensiones con otros actores, instrumentos para diversificar sus relaciones con el mundo y una opción de liderazgo regional desde la persuasión.

  2. Capital social emprendedor como ventaja competitividad para la performance del proyecto empresarial

    OpenAIRE

    Ribeiro Soriano, Domingo; Vila, José E.; Fornoni, Mariel

    2005-01-01

    El trabajo es una aproximación teórica al valor del capital social en las ciencias de gestión y analiza el estado del arte en la literatura de capital social y de la creación de valor observando resultados de numerosos trabajos empíricos en el campo del capital social y de las relaciones intrafirmas e interfirmas. Observamos que la posesión de capital social es un elemento importante a la hora para generar una ventaja competitiva que permita a un emprendedor llevar adelante un proyecto empren...

  3. Ventajas y desventajas de las TIC en la enseñanza

    OpenAIRE

    Daniel Gómez

    2015-01-01

    Este documento describe cómo la aplicación de las TIC presenta ventajas y desventajas cuando se utiliza como parte fundamental en el proceso de enseñanza-aprendizaje. La tecnología avanza a pasos agigantados generando múltiples cambios y aplicaciones en todos los campos, inclusive, el ámbito educativo. Estos cambios obligan a los docentes a asumir el reto e involucrarse en una continua preparación con el único objetivo de mejorar los resultados del aprendizaje. Para esto, se realizó una inves...

  4. Ventajas, inconvenientes e impactos territoriales del comercio electrónico

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    Fernando Moliní Fernández

    2002-01-01

    Full Text Available Este artículo analiza las ventajas e inconvenientes de Internet para las empresas y reflexiona sobre sus implicaciones territoriales. Se comentan algunos casos particularmente relevantes de tiendas de comercio electrónico, se desarrollan los principales elementos positivos que representa Internet, se señalan los aspectos negativos, se hace una reflexión sobre el modelo de empresa más competitivo y se comenta el impacto geográfico de las empresas que venden en la Web

  5. Monitorización de fármacos en saliva: ventajas e inconvenientes

    OpenAIRE

    Fagiolino, Pietro

    1990-01-01

    La monitorización de fármacos en saliva es una técnica no invasiva, de fácil obtención, económica y con notorias ventajas éticas. Sin embargo, su relación con la concentración plasmática no es constante en el tiempo y depende del modo de administración del fármaco (dosis única o dosis múltiple), de la velocidad de absorción y del perfd de liberación in vivo desde la forma farmacéutica. Para inferir correctamente la concentración plasmática de droga a partir de niveles salivales, éstos deben s...

  6. La mediana empresa familiar peruana y la creación de ventajas competitivas

    OpenAIRE

    David Wong; Carlos Parodi Trece; Martín Monsalve

    2012-01-01

    "En el siguiente documento se aborda desde una perspectiva administrativa, económica e histórica la evolución de la mediana empresa y la creación de ventajas competitivas en este sector a lo largo del siglo XX y principios del XXI. Se analiza el impacto de la mediana empresa en la economía peruana y su desarrollo histórico como institución administrativa y económica, a partir del caso de Gráficas C, una empresa familiar donde la segunda generación, bajo la guía del fundador, comienza a asumir...

  7. Las estrategias de marketing en tiendas virtuales y las ventajas competitivas: un estudio de caso

    OpenAIRE

    Vinícius Silva Pereira; Vidigal Fernandes Martins

    2011-01-01

    Este artículo tiene como objetivo identificar y analizar el mix de marketing de Submarino.com y las ventajas competitivas conferidas por ésta. Se realizó un estudio de caso de Submarino.com, una compañía líder en ventas en Internet de Brasil, dentro de un enfoque cualitativo. Se observó que la forma en que el Submarino utiliza el mix de marketing está en línea con su visión estratégica declarada. Así que la empresa puede diferenciarse de la competencia y establecer barreras a la entrada de nu...

  8. Estudio de ventajas energéticas en un proceso de destilación

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    Carlos Ariel Cardona Alzate

    2013-04-01

    Full Text Available Este trabajo desarrolla un método para comparar los gastos energéticos entre las configuraciones secuencial (reacción-separación y simultánea (destilación reactiva, analizando los flujos internos y externos de un proceso. Como ejemplo se utilizó una reacción tipo: A + B D C + D; con temperaturas de saturación: TCσventaja de la destilación reactiva sobre los procesos convencionales para este tipo de procesos.

  9. Ventajas y desventajas del desarrollo rural sostenible en ambientes de montaña Ventajas y desventajas del desarrollo rural sostenible en ambientes de montaña

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    Hildegardo Córdova Aguilar

    2009-12-01

    Full Text Available Rural and urban worlds are the two columns that support a society within a given territory. Often, we dedicate much attention to the urban sector because it contains near 60% of the world population and generates and dynamics the contemporary economies. We talk much of the rural sector but do little to solve its problems, especially to bettering the quality of life of the poorest, which in global terms are living in the mountain areas of the world.In this paper I analyze the advantages and disadvantages of the mountain environments to sustainable human development that allows bettering the quality of life of their populations. I insist on resources quality and control and urban demand. I also point out to the infrastructure difficulties and its effects in the circulation of goods and services. The case study is settled at the Sierra of the Department of Piura, northwest Perú, where there is a rural population mostly dedicated to subsistence activities while in the coastal lowlands dominates commercial agriculture.El mundo rural y el urbano son los dos pilares que sostienen a una sociedad dentro de un territorio dado. Se viene dedicando considerable atención al sector urbano porque allí se concentra cerca del 60% de la población mundial y porque allí se generan y dinamizan las economías contemporáneas. Del sector rural se habla mucho y se hace poco, especialmente para mejorar la calidad de vida del subgrupo de los más pobres, que en términos globales se encuentran en los territorios montañosos del mundo.En esta ponencia se analizarán las ventajas y desventajas que presentan estos territorios para el desarrollo humano sostenible, que permita mejorar las condiciones de vida de sus poblaciones. Se insistirá en la calidad y control de los recursos y en las demandas urbanas. Asimismo se hará notar las dificultades de infraestructura y sus efectos en la circulación de bienes y servicios. Como ejemplo se tomará el sector de la sierra del

  10. Construcciones agrarias en madera: una ventaja en la integración en el paisaje

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    Cañas Guerrero, Ignacio

    1991-02-01

    Full Text Available Aesthetic values conservation are more important every day. Wooden constructions are better for this conservation. Construction impact on landscape can be analyzed by two ways; Synthetic and Analytic methods. Using at first a list of wood adventages (based in comparing photographs can be found. It is a natural material and it can be selected a great kind of textures and colours, visual, auditory tactile, smelling and gustative comfort is provided. Psychological factors are in favour of wooden constructions. Assembling and demolition cause less landscape impact. Nevertheless, Analytic method are based on physics and aesthetics components analysis. Physics components are walls materials, buildings distribution and services in buildings. Aesthetics components are shape, sacale. line and colour in a first group and texture in a second. Otherwise the texture wood has different posibilities, its own nature, finished treatement and boards position.

    La conservación de los valores estéticos del paisaje cobran cada día más importancia; en este aspecto las construcciones en madera aportan una serie de ventajas. Para analizar el impacto de las construcciones contamos con dos métodos: Sintético y Analítico. En el primero, basado en el estudio de pares de fotografías, encontramos que la madera tiene una serie de ventajas: es un material natural, ofrece una variedad de colores y texturas, posee confortabilidad visual, auditiva, táctil, olfativa y gustativa, intervienen favorablemente factores sicológicos, se provoca un menor impacto paisajístico a la hora del montaje con un envejecimiento más noble y, llegado el momento, una mayor facilidad para su demolición. El Analítico, sin embargo, se basa en el estudio de los componentes físicos y estéticos. Dentro de los componentes físicos se consideran los materiales, los cerramientos y la distribución de los edificios y obras accesorias. En los componentes estéticos hablamos de la

  11. La internacionalización de la empresa y la ventaja competitiva

    Directory of Open Access Journals (Sweden)

    Jorge Antonio Murillo Ortíz

    2000-07-01

    Full Text Available Debido a la creciente globalización de las economías, se hace imperativa la formulación, fijación y estructuración de estrategias de internacionalización. La mayoría de las Pymes (pequeñas y medianas empresas no han diseñado una estrategia de acceso a los mercados externos, aún cuando cada vez se hace más necesaria, dentro del mercado neoliberal, la internacionalización de la empresa con el fin no solo de no depender de los mercados domésticos, sino de tener participación en ambos mercados, lo cual trae muchas ventajas como la diversificación del portafolio, la presencia en dos mercados, la generación de divisas, el tener mayor competitividad, etc. El presente artículo tiene como objetivo proporcionar herramientas y elementos a los directivos de las empresas sobre como diseñar estrategias de acceso a los mercados internacionales, ya sea en forma directa, indirecta o mixta...

  12. Ventajas y desventajas de la Sociedad por Acciones Simplificada para la empresa familiar en Colombia. Estudio exploratorio

    Directory of Open Access Journals (Sweden)

    José Bernardo Betancourt Ramírez

    2013-04-01

    Full Text Available La Sociedad por Acciones Simplificada (SAS representa la evolución más significativa del sistema societario colombiano en las últimas 4 décadas. Desde su aparición representa cerca del 90% del total de sociedades matriculadas en el país. Este estudio exploratorio descriptivo busca determinar si los empresarios conocen las ventajas y desventajas de las SAS, y si las tienen en cuenta en la toma de decisiones. Se aplicó un cuestionario estructurado a 57 empresas, de las cuales el 84% eran familiares. Se observó un amplio desconocimiento de algunas ventajas y desventajas de la SAS que implica el desaprovechamiento de sus bondades y, en casos puntuales, riesgos para las empresas familiares.

  13. Gestión empresarial orientada al valor del cliente como fuente de ventaja competitiva. Propuesta de un modelo explicativo

    OpenAIRE

    Torres Moraga, Eduardo; Valenzuela, Leslier

    2009-01-01

    La globalización y el entorno altamente competitivo exigen a las empresas estar orientadas al mercado y gestionar su cartera de clientes como un activo estratégico clave para aumentar la rentabilidad del negocio y lograr una ventaja competitiva sostenible en el tiempo. El objetivo de este artículo es contribuir con una propuesta de modelo basado en el valor de la cartera de clientes para ayudar a las empresas a tomar mejores decisiones estratégicas de marketing. Las hipótesis formuladas ha...

  14. TECNOLOGÍA DE INFORMACIÓN Y VENTAJA COMPETITIVA: EL CASO DE LOS SISTEMAS ERP EN CHILE

    Directory of Open Access Journals (Sweden)

    Patricio Ramírez C.

    2007-05-01

    Full Text Available Este trabajo presenta un examen de los factores que anteceden la integración exitosa de una tecnología de información, como son los sistemas ERP (Enterprise Resources Planning, y cuales de estos factores pueden generar una ventaja competitiva sostenible para la empresa. El análisis se basa en un estudio empírico que indagó el fenómeno de implantación exitosa de sistemas ERP en 72 grandes empresas chilenas y lo contrastó con un modelo de investigación propuesto por los autores, utilizando para estos efectos la técnica PLS (Partial Least Square de modelado de ecuaciones estructurales. Basados en el enfoque conceptual de la teoría de recursos y capacidades, los resultados de la investigación indican que el aprendizaje y la predisposición para el cambio (en conjunción con los otros factores antecedentes del éxito de un sistema ERP y del propio ERP pueden ser fuentes de una ventaja competitiva sostenible.

  15. Grupo Semco y las prácticas de recursos humanos de alto compromiso, una ventaja competitiva

    Directory of Open Access Journals (Sweden)

    Juan Nicolás Montoya Monsalve

    2012-12-01

    Full Text Available El presente artículo de reflexión trata de determinar si las prácticas de recursos humanos orientadas a mejorar el compromiso de los empleados con la empresa reportan una identidad común y diferenciadora del resto de empresas, logrando de esta forma una ventaja competitiva. Además de la fundamentación teórica, para analizar el objetivo principal señalado se han utilizado elementos del método del caso, que ayudan a determinar nuevas variables de estudio y permiten comprobar si existen realidades empresariales que consigan alcanzar, a través de las prácticas de alto compromiso, un mejor desempeño y una mayor pertinencia con las organizaciones, y estudiar cómo lo han conseguido. En esta parte de análisis empírico, se analiza la organización Semco, una compañía brasileña que ha atraído el interés de los expertos por las innovadoras prácticas en la gestión del talento humano, su diseño organizativo y la generación de una identidad propia, como base de su ventaja competitiva.

  16. La estrategia, la estructura y las formas de asociación: Fuentes de ventaja competitiva para las pymes colombianas.

    Directory of Open Access Journals (Sweden)

    Francisco Velásquez Vásquez

    2004-01-01

    Full Text Available En este artículo se presenta la importancia de la estrategia, de la estructura y de las formas de asociación de las pequeñas y medianas empresas colombianas (Pymes como fuentes de ventajas competitivas en el entorno internacional. En una primera parte se muestra qué tanto las naciones desarrolladas, como las emergentes, comparten una alta proporción de Pymes en su estructura económica, e igualmente se identifica la caracterización de las mismas en el mundo. En una segunda parte los estudios sobre el diagnóstico de las Pymes colombianas señalan la ausencia de prácticas empresariales competitivas. En una tercera parte se describen distintos modelos teóricos que explican los ciclos de vida de las organizaciones. Adicionalmente se muestran las perspectivas de las Pymes en la primera década del siglo XXI. El artículo finaliza con unas conclusiones y recomendaciones sobre ventajas competitivas para que las Pymes colombianas puedan multiplicar de manera significativa las exportaciones no tradicionales en los próximos años.

  17. Métodos de análisis foliar aplicados bosques naturales y exóticos de interés comercial: características, ventajas y desventajas.

    Directory of Open Access Journals (Sweden)

    Carlos Esse

    2014-07-01

    Full Text Available Resumen El presente trabajo, corresponde a una síntesis bibliográfica cuyo objetivo radica en la descripción de las principales características de tres de los métodos más utilizados en los análisis de tejido foliar de origen vegetal. Para ello, se analizaron los estudios relacionados la temática expuesta, desde los cuales se extrajeron los principales resultados y discusiones sobre las ventajas del uso de cada uno de ellos. Los métodos aquí presentados corresponden al método de los valores críticos (VC, método DRIS (diagnosis and recommendation integrated system, y método a través del análisis de vectores. Las principales conclusiones indican que los tres métodos permiten abordar en general las distintas condiciones en las cuales crecen los bosques naturales y exóticos de interés comercial, no destacándose ningún método sobre otro, sin embargo, cada uno posee sus ventajas dependiendo de la especie tratada y el sitio. Lo anterior permite su recomendación con base a características de la especie analizada y las condiciones de sitio en las cuales crece y se desarrollan las especies forestales.

  18. Logística Integral: Una alternativa para crear valor y ventajas competitivas en las pequeñas y medianas empresas (pymes) del Sector Calzado

    OpenAIRE

    Francisco Javier Villarreal Segoviano

    2012-01-01

    En este documento se plantea la ventaja competitiva como el resultado que las empresas buscan lograr en un contexto global y de hipercompetitividad; para lograr esto se necesitan estrategias que impulsen esas ventajas competitivas en un ambiente cambiante y dinámico, una de estas estrategias es la logística integral, que busca el equilibrio de la estructura de la cadena de valor de negocio y lograr una interacción y operación eficiente de las áreas de una manera en que las actividades proyect...

  19. VENTAJAS ARANCELARIAS OTORGADAS POR ESTADOS UNIDOS POR MEDIO DEL ATPDEA, APROVECHABLES PARA LAS PyMES DE BOGOTA Y CUNDINAMARCA

    Directory of Open Access Journals (Sweden)

    Mario Ernesto

    2003-07-01

    Full Text Available En medio de la crisis de desempleo, pobreza y desigualdad que afronta Colombia, las pequeñas y medianas empresas se han convertido en una alternativa importante de generación de trabajo y valor agregado. Sin embargo, éstas deben aprovechar las ventajas que se otorgaron al país en el marco del ATPDEA, por medio del cual los Estados Unidos concedió preferencias arancelarias a más de cinco mil seiscientos productos que estuvieron vigentes durante más de diez años, y que luego, a partir de septiembre del 2002, se ampliaron en más de seiscientos productos. En este trabajo se presentan los rubros de la lista adicional, que presentan posibilidades de exportación a los Estados Unidos por parte de las PyMES de Bogotá y Cundinamarca.

  20. Utilización de MOOCS en la formación docente: ventajas, desventajas y peligros

    Directory of Open Access Journals (Sweden)

    Ilich Silva Peña

    2014-01-01

    a la luz de las necesidades de formación de docentes. Se presentan las grandes ventajas que tendrían estos cursos para resolver algunos de los problemas de dotación docente a nivel internacional y actualización del conocimiento del profesorado. Se muestran también algunas desventajas frente a los procesos formativos más tradicionales. Sin embargo, el artículo discute principalmente los peligros a los que se enfrenta la utilización de MOOCs en la formación docente presentando una alerta a los problemas de la regulación a través del mercado y los que podrían generarse a través de una neocolonización.

  1. El clúster de salud en Medellín, ventaja competitiva alternativa para la ciudad

    Directory of Open Access Journals (Sweden)

    Jorge Andrés Marulanda Montoya

    2010-08-01

    Full Text Available El presente artículo es una explicación del porqué el Clúster de salud en la ciudad de Medellín, tras su consolidación, se puede convertir en una ventaja competitiva alternativa de alto valor agregado para la ciudad, con miras a la exportación de servicios médicos y odontológicos, caracterizado por el vanguardismo en investigación y desarrollo en procedimientos médicos especializados. El alto nivel desarrollado en Salud, unido a una adecuada consolidación de los sectores educativos, industriales, comerciales (turismo y de servicios (transporte, tanto de la ciudad como de otras zonas del departamento de Antioquia, complementan el desarrollo de la iniciativa con el fin de generar factores diferenciales de competitividad en materia social y económica. En la actualidad, la estrategia Clúster de la ciudad de Medellín y Antioquia , le apuesta a cinco sectores económicos que se enuncian en el artículo; es por ello que los autores argumentan cómo el Clúster de Salud presenta actualmente el mayor potencial competitivo en comparación con los otros cuatro.

  2. ¿Puede la participación transformarse en una fuente de ventaja competitiva en las microfinancieras no convencionales?

    Directory of Open Access Journals (Sweden)

    Ronie Zamor

    2002-02-01

    Full Text Available En la actualidad, el término participación se está convirtiendo en una palabra clave en muchas instituciones. La participación tiene varios niveles de intensidad; dependiendo de los objetivos de las organizaciones se puede aspirar a más o menos intensidad de participación. Cualquier organización que tiene como objetivo incidir en el desarrollo de las comunidades tiene que abrir espacios de participación. En las microfinancieras sin fines de lucro, ayuda a mejorar las relaciones humanas, fomenta el arraigo local, la sostenibilidad social y abre espacios para una auditoria social. Así una microfinancieras que tiene apoyo social es capaz de diseñar políticas estratégicas acordes a las necesidades de sus clientes mejorando su rentabilidad económica. La participación de los clientes se convierte en una fuente de ventaja competitiva para las organizaciones que saben aprovechar esta herramienta.

  3. Gerencia del conocimiento y tecnologías de información como fuentes de ventajas competitivas

    Directory of Open Access Journals (Sweden)

    Judith Colina

    2005-05-01

    Full Text Available Hoy en día existe un gran interés en lo que concierne al conocimiento en las organizaciones, todo esto apunta al hecho de que el conocimiento es fundamental para el éxito y hasta para lograr la supervivencia de cualquier organización. La elaboración de este artículo tiene por objeto abordar algunos aspectos relativos al marco conceptual de la gestión del conocimiento y su relación con las Tecnologías de Información así como su importancia y efectividad en las organizaciones al ser considerada como fuente de ventajas competitivas. Se concluye que la empresa más eficaz será aquella que permita a sus trabajadores un mayor rendimiento, proporcionándoles un acceso rápido a la información así como las herramientas necesarias para organizar y compartir el conocimiento de forma efectiva dentro de la organización.

  4. Eugenol: propiedades farmacológicas y toxicológicas. Ventajas y desventajas de su uso

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    Raimara González Escobar

    2002-08-01

    Full Text Available El Eugenol es un derivado fenólico conocido comúnmente como esencia de clavo, que es utilizado desde hace varios siglos en la práctica odontológica. Por sus propiedades farmacológicas tiene diferentes usos. Sus efectos farmacológicos son complejos y dependen de la concentración del Eugenol libre a la cual el tejido se expone. En este trabajo se presentan sus características farmacológicas y toxicológicas; se mencionan algunos de los mecanismos de acción propuestos para ambos efectos, y se exponen algunos de los nuevos materiales que se utilizan actualmente en estomatología; se presentan sus usos y sus ventajas sobre las formulaciones de Eugenol ya existentes.Eugenol is a phenolic derivative, commonly known as "esencia de clavo", which has been used in dental practice for centuries. Its pharmacological properties determined different uses. Its pharmacological effects are complex and depend on the concentration of free Eugenol to which the tissue is exposed. This paper presents the pharmacological and toxicological characteristics of Eugenol; it mentions some of the mechanisms of action proposed for both effects and also presents some of the new materials used in dentistry nowadays. Their uses and advantages over already existing Eugenol formulations are set forth.

  5. Gestión empresarial orientada al valor del cliente como fuente de ventaja competitiva. Propuesta de un modelo explicativo

    Directory of Open Access Journals (Sweden)

    Leslier Valenzuela

    2008-10-01

    Full Text Available La globalización y el entorno altamente competitivo exigen a las empresas estar orientadas al mercado y gestionar su cartera de clientes como un activo estratégico clave para aumentar la rentabilidad del negocio y lograr una ventaja competitiva sostenible en el tiempo. El objetivo de este artículo es contribuir con una propuesta de modelo basado en el valor de la cartera de clientes para ayudar a las empresas a tomar mejores decisiones estratégicas de marketing. Las hipótesis formuladas han sido contrastadas a través de un modelo estructural con constructos fiables que han sido aplicados al sector turístico, específicamente, a las agencias de viajes en España. Los resultados revelan que existe una relación positiva y significativa entre el grado de orientación al valor del cliente y las mejores decisiones estratégicas de marketing. Finalmente, el estudio presenta las conclusiones e implicaciones que estos resultados pudieran tener para la gestión empresarial.

  6. Advantages of floating covers with LLDPE Liners; Ventajas del uso de geomembranas LLDPE en cubiertas flotantes

    Energy Technology Data Exchange (ETDEWEB)

    Munoz Gomez, J. M.

    2014-02-01

    Using floating covers in irrigation pounds and waste dam gives many advantages. It is a very interesting investment for those place with a high evaporation ratio. this is an easy system which improves several aspects in irrigation or drinkable water reservoirs, mainly it saves water and it saves clean-works (time and cost). It is also used in waste dam to deodorization. Time ago this application was developed with PVC liners and TPO liners, now the innovation is LLDPE liners which improve mechanical properties, durability and an easier installation. This paper develops the state of art of this design technology, and the back ground of our experience. (Author)

  7. Advantages of digital imaging for radiological diagnostic; Ventajas de la imagen digital para el diagnostico radiologico

    Energy Technology Data Exchange (ETDEWEB)

    Trapero, M. A.; Gonzalez, S.; Albillos, J. C.; Martel, J.; Rebollo, M.

    2006-07-01

    The advantages and limitations of radiological digital images in comparison with analogic ones are analyzed. We discuss three main topics: acquisition, post-procedure manipulation, and visualization, archive and communication. Digital acquisition with computed radiology systems present a global sensitivity very close to conventional film for diagnostic purposes. However, flat panel digital systems seems to achieve some advantages in particular clinical situations. A critical issue is the radiation dose-reduction that can be accomplished without reducing image quality nor diagnostic exactitude. The post-procedure manipulation allows, particularly in multiplanar modalities like CT or MR, to extract all implicit diagnostic information in the images: Main procedures are multiplanar and three-dimensional reformations, dynamic acquisitions, functional studies and image fusion. The use of PACS for visualization, archive and communication of images, improves the effectiveness and the efficiency of the workflow, allows a more comfortable diagnosis for the radiologist and gives way to improvements in the communication of images, allowing tele consulting and the tele radiology. (Author) 6 refs.

  8. Evidencia y recomendación. ¿Harmonic Ultracision ofrece ventajas en tiroidectomía?

    Directory of Open Access Journals (Sweden)

    José Luis PARDAL-REFOYO

    2016-07-01

    Full Text Available Introducción y objetivo: En un paciente con patología de tiroides [paciente] sometido a tiroidectomía [intervención] la técnica realizada con Harmonic Ultracision® (HU comparada con las técnicas convencionales (ligadura, electrocoagulación mono o bipolar y Ligasure® [comparación] ¿es más segura [resultado]? Material y método: Búsqueda bibliográfica en las bases de datos PubMed, Cochrane Library y Scopus con la estrategia de búsqueda «(((((ultrasonic scalpel OR harmonic AND thyroidectomy AND meta-analysis. Resultados: Nivel de evidencia: La evidencia de la ventaja del uso de HU en tiroidectomía frente a otras técnicas es alta respecto a la eliminación de las suturas, a la facilitación del acceso a espacios más reducidos, la reducción del tiempo quirúrgico, la reducción del sangrado intraoperatorio y postoperatorio, la reducción del hipoparatiroidismo transitorio, la reducción del dolor postoperatorio, la reducción de la estancia hospitalaria y reducción del coste. Conclusiones: Recomendación: La recomendación del uso de HU en tiroidectomía frenta a otras alternativas (cirugía convencional / Ligasure® es débil a favor porque reduce la incidencia de parálisis laríngea y es fuerte a favor debido a que reduce el tiempo operatorio, reduce el sangrado intraoperatorio y postoperatorio, reduce el volumen drenado, reduce la incidencia de hipocalcemia, reduce la estancia hospitalaria y el coste. La recomendación del uso de HU en tiroidectomía es fuerte a favor.

  9. Ventajas de la perforación direccional: revisión y aplicación en el Oriente Ecuatoriano

    Directory of Open Access Journals (Sweden)

    Darío Cedeño Macías

    2017-05-01

    Full Text Available El avance evolutivo que ha tenido la industria hidrocarburífera a nivel mundial, específicamente en las operaciones de extracción y producción, requieren métodos más precisos y rigurosos para llevar a cabo su cometido, considerando principalmente la relación costo beneficio. Para ello es imperativo desarrollar tecnologías y sistemas de manera paralela a dicha evolución. El objetivo de este trabajo es presentar una revisión actualizada de los aspectos esenciales de la perforación direccional, con énfasis en sus evidentes ventajas respecto a la perforación vertical o convencional, y sobre todo su impacto en la reducción de costos para la industria petrolera. De manera que el nivel académico trabaje estrechamente con el nivel profesional, teniendo como parte medular el análisis de datos de ingeniería de diseño en los sistemas de perforación direccional rotativos y su impacto en la reducción de costos operativos en el proceso de extracción de hidrocarburos. Se presentan y discuten los resultados del desempeño alcanzado por estas herramientas en el campo.   Abstract The evolutionary advance of the hydrocarbon industry worldwide, specifically in the extraction and production operations, requires more precise and rigorous methods to carry out its mission, considering mainly the cost benefit relation. To do this, it is imperative to develop technologies and systems in parallel with this evolution. The objective of this work is to present an updated review of the essential aspects of directional drilling, with emphasis on its obvious advantages over vertical or conventional drilling, and especially its impact on reducing costs for the oil industry. So that the academic level works closely with the professional level, having as a core part the analysis of design engineering data in rotary directional drilling systems and its impact on the reduction of operating costs in the hydrocarbon extraction process. The results of the

  10. Sistemas adhesivos autograbadores en esmalte: ventajas e inconvenientes Self-etching adhesive systems on enamel: advantages and disadvantages

    OpenAIRE

    M.A Gomes Moreira

    2004-01-01

    Se mide la resistencia adhesiva de cinco sistemas adhesivos autograbadores y se compara con dos monocomponentes, en esmalte bovino, utilizando cuatro protocolos de aplicación diferentes (según fabricante, con ácido, dos tiempos y dos capas). Asimismo se evalúan con MEB los patrones de grabado ácido de estos sistemas adhesivos, muy heterogéneos en los autograbadores. Todos los sistemas autograbadores presentan valores aceptables de resistencia adhesiva.The bond strength to bovine enamel of fiv...

  11. El efecto de marcar primero y la ventaja de jugar en casa en la liga de fútbol y en la liga de fútbol sala de España

    Directory of Open Access Journals (Sweden)

    Javier Sampedro Molinuevo

    2012-01-01

    Full Text Available El propósito de esta investigación fue estudiar el efecto de marcar primero y su relación con la ventaja de jugar en casa en la Liga de Fútbol Profesional y en la Liga Nacional de Fútbol Sala de España, para conocer el efecto que tiene marcar primero sobre el resultado final de los partidos y su relación con la localización del partido, en función de si el equipo que se adelanta en el marcador es local o visitante. Se estudió cada liga de manera individual, para después comparar los resultados entre éstas. Con este propósito se introdujeron dos nuevas métricas denominadas 'ventaja de jugar en casa para marcar el primer gol' y 'ventaja de marcar primero'. Los resultados muestran una ventaja de los equipos locales para marcar el primer gol significativamente menor que la ventaja de jugar en casa en las dos ligas. Asimismo se encuentra ventaja por marcar primero en el resultado de los partidos para los equipos locales y visitantes, con diferencias significativas a favor de los equipos locales y valores superiores en la liga de fútbol. Es preciso considerar las distintas características reglamentarias y de juego del fútbol y del fútbol sala que pueden explicar las diferencias encontradas.

  12. Las ventajas de la utilización del Campus Virtual en la Escuela de Trabajo Social de la Universidad Complutense

    OpenAIRE

    Gómez Gómez, Francisco; Aller Macías, Víctor Manuel

    2011-01-01

    Abordamos los aspectos más importantes sobre las ventajas que ofrece la utilización del Campus Virtual a la comunidad universitaria de la Escuela de Trabajo Social de la Universidad Complutense de Madrid. Se ofrecen los datos de participación de los estudiantes, de los profesores y de las asignaturas virtualizadas. La opinión de los estudiantes obtenida mediante encuesta ofrece los niveles de satisfacción de los mismos, así como la importancia que otorgan a su utilización, además de sus gusto...

  13. Las capacidades de absorción del conocimiento como ventajas competitivas para la inserción de pymes en cadenas globales de valor

    OpenAIRE

    Olea Miranda, Jaime; Contreras, Oscar F.; Valenzuela, Mario Barcelo

    2016-01-01

    El propósito del estudio es identificar las capacidades de absorción del conocimiento como fuente de ventajas competitivas que potencializan en las pymes las posibilidades de integrarse a las cadenas globales de valor. Para ello se realizó una revisión del estado del arte que fundamenta la propuesta de un modelo basado en 2 enfoques teóricos: el de sistemas de innovación y el de cadenas globales de valor. La implementación se realizó en pymes del noroeste de México en los sectores...

  14. Las capacidades de absorción del conocimiento como ventajas competitivas para la inserción de pymes en cadenas globales de valor

    OpenAIRE

    Olea-Miranda, Jaime; Contreras, Oscar F.; Barcelo-Valenzuela, Mario

    2016-01-01

    El propósito del estudio es identificar las capacidades de absorción del conocimiento como fuente de ventajas competitivas que potencializan en las pymes las posibilidades de integrarse a las cadenas globales de valor. Para ello se realizó una revisión del estado del arte que fundamenta la propuesta de un modelo basado en 2 enfoques teóricos: el de sistemas de innovación y el de cadenas globales de valor. La implementación se realizó en pymes del noroeste de México en los sectores de tecnolog...

  15. Ventajas terapeúticas del uso de la asociación de ampicilina con Uncaria Tomentosa (Uña de Gato) en pacientes con procesos infecciosos

    OpenAIRE

    Lahoud S., Víctor; Decano de In Facultad de Odontología. UNMSM.; Gutiérrez M., J.; Profesor Principal Departamento de Ciencias Básicas.; Mendoza Z., J.; Profesor Principal Departamento de Estomatología Pediátrica.; Cisneros Z., L.; Profesor Asociado Departamento de Estomatología Médico Quirúrgico.

    2014-01-01

    El estudio científico demostró las ventajas terapéuticas de la administración de la ampicilina 500 mg. asociada con extracto liofilizado de Uncaria Tomentosa 45mg. en comparación con la administración de la ampicilina 500mg.y un inflamatorio a base de piroxican, en procesos infecciosos agudos en la cavidad oral. 40 pacientes diagnosticados con procesos infecciosos agudos en la cavidad oral fueron divididos en dos grupos. Un grupo experimental constituido por 20 pacientes a quienes se administ...

  16. TECNOLOGÍA DE INFORMACIÓN Y VENTAJA COMPETITIVA: EL CASO DE LOS SISTEMAS ERP EN CHILE [doi: 10.5329/RECADM.20070601002

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    Patricio Ramírez C.

    2007-05-01

    Full Text Available Este trabajo presenta un examen de los factores que anteceden la integración exitosa de una tecnología de información, como son los sistemas ERP (Enterprise Resources Planning, y cuales de estos factores pueden generar una ventaja competitiva sostenible para la empresa. El análisis se basa en un estudio empírico que indagó el fenómeno de implantación exitosa de sistemas ERP en 72 grandes empresas chilenas y lo contrastó con un modelo de investigación propuesto por los autores, utilizando para estos efectos la técnica PLS (Partial Least Square de modelado de ecuaciones estructurales. Basados en el enfoque conceptual de la teoría de recursos y capacidades, los resultados de la investigación indican que el aprendizaje y la predisposición para el cambio (en conjunción con los otros factores antecedentes del éxito de un sistema ERP y del propio ERP pueden ser fuentes de una ventaja competitiva sostenible.

  17. GESTIÓN DEL CONOCIMIENTO Y ORIENTACIÓN AL MARKETING INTERNO EN EL DESARROLLO DE VENTAJAS COMPETITIVAS EN EL SECTOR HOTELERO

    Directory of Open Access Journals (Sweden)

    Ruizalba Robledo, José Luis

    2015-05-01

    Full Text Available La orientación al marketing interno (OMI puede constituir una herramienta de gestión del conocimiento de los empleados que permita a las empresas desarrollar una ventaja competitiva en la medida en que genera información, la comunica internamente para terminar ofreciendo una respuesta a sus necesidades. La OMI, mediante la adecuada gestión del capital humano, facilita competir de forma más efectiva y dar una respuesta ágil a las demandas del mercado. En este estudio se analizan las 3 dimensiones que constituyen la OMI y que suponen una gestión del conocimiento en lo que se refiere a generación de inteligencia sobre las necesidades de los empleados, su comunicación y su posterior respuesta. A continuación se realiza una investigación empírica para analizar el grado de OMI en los hoteles españoles y en la que se identifica una clasificación de 3 grupos diferenciados según dichos niveles. Además, se evidencia a la OMI como fuente de ventaja competitiva, ya que se encuentran mayores niveles de satisfacción laboral y de compromiso organizacional en los grupos con mayor OMI.

  18. Logística Integral: Una alternativa para crear valor y ventajas competitivas en las pequeñas y medianas empresas (pymes del Sector Calzado

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    Francisco Javier Villarreal Segoviano

    2012-01-01

    Full Text Available En este documento se plantea la ventaja competitiva como el resultado que las empresas buscan lograr en un contexto global y de hipercompetitividad; para lograr esto se necesitan estrategias que impulsen esas ventajas competitivas en un ambiente cambiante y dinámico, una de estas estrategias es la logística integral, que busca el equilibrio de la estructura de la cadena de valor de negocio y lograr una interacción y operación eficiente de las áreas de una manera en que las actividades proyecten la creación de valor en las empresas pequeñas y medianas del sector calzado. Las operaciones de una empresa pequeña y mediana tienen un contexto particular en donde presentan ventajas y desventajas, que pueden consolidar o no a una empresa en el plano internacional; previo a esto se necesita plantear la aplicación de la Logística que impulse al cambio y a la consolidación de la creación de valor en el negocio. Se aplicaron sesenta (60 encuestas a empresas pyme adheridas a la cámara de calzado y con la base de datos de COFOCE (Coordinadora de Fomento al Comercio Exterior del Estado de Guanajuato, en donde además de aplicar la encuesta, se hacía un recorrido por las instalaciones y se platicaba de forma informal la realidad y contexto de la empresa, y que generaba también información cualitativa útil. Con ello, se pretendió conocer la realidad de las pequeñas y medianas empresas en León, Gto., identificar los aspectos necesarios para revertir esas desventajas identificadas, como la falta del desarrollo de una logística, la ausencia de planeación estratégica, aplicación de las tecnología de la información y comunicación, falta de competitividad internacional y la falta de creación de valor a lo largo de la cadena de valor del negocio.

  19. Ventajas competitivas: Una propuesta paso a paso de búsqueda y aplicación de cadena de valor adaptada a empresas aéreas. Caso Patagonia- Argentina

    OpenAIRE

    María Alejandra Gazzera

    2005-01-01

    El desarrollo del proceso de búsqueda de ventajas competitivas de una empresa se puede plantear como un esfuerzo que se sigue en tres grandes líneas de actuación: la búsqueda centrada en la empresa, centrada en el entorno, y centrada en los competidores. Si bien la búsqueda de ventajas competitivas está estrechamente interrelacionada y vinculada entre las tres líneas, el presente trabajo se centrará en la primera de ellas, es decir al interior de la empresa, sin perder de vista la rel...

  20. El territorio y su relación con las ventajas comparativas y competitivas en el municipio de La Unión, Valle del Cauca, Colombia

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    Magdalida Murgueitio

    2015-01-01

    Full Text Available En el marco del proyecto de investigación denominado “Marketing Territorial, una alternativa para la competitividad y posicionamiento regional en los municipios de La Unión, Zarzal y Cartago durante el periodo 2012-2013” el objetivo principal es identificar las alternativas que promuevan la competitividad y el posicionamiento regional en los municipios de La Unión, Zarzal y Cartago, en el Valle del Cauca. La problemática se aborda con la triangulación de métodos, datos e investigadores. Se obtienen datos con diferentes técnicas e instrumentos como la observación no participante, la opinión de los habitantes, entrevistas semiestructuradas a funcionarios públicos y recopilación de datos estadísticos de los municipios en diferentes rubros; además del análisis de un equipo de investigadores de disciplinas como la Economía, la Contaduría, la Administración, la Ingeniería de Sistemas y la Educación. Los resultados indican que el aprovechamiento de las ventajas comparativas que el territorio brinda, así como la educación, la infraestructura y el apoyo administrativo del gobierno departamen - tal juegan un papel importante en la potencialización de las ventajas competitivas del municipio. Se concluye que el marketing territorial es una herramienta para impulsar la competitividad, la cual se potencializa cuando existe la voluntad política de invertir en ella y de gestionarla.

  1. Territoriality as a factor associated with home advantage. A comparative study by regions in professional Spanish football and futsal leagues La territorialidad como factor asociado a la ventaja de jugar en casa. Un estudio comparativo por regiones en la liga de fútbol y en la liga de fútbol sala de España

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    J. Sampedro

    2011-06-01

    Full Text Available

    The aim of this research was to study home advantage in the professional Spanish football and futsal leagues in a general way, and to make a regional analysis to identify geographical variations and whether they can be interpreted in terms of territoriality as a factor associated with home advantage. Last fifteen seasons were examined, after the introduction of the current system of three points for a win in 1995-96. Home advantage found in the two leagues under study was close to the worldwide figure in football. Individual analysis after controlling team ability showed no significant differences between any of the teams. The analysis of specific regions from elsewhere in the country only showed significant differences that can be interpreted in terms of territoriality in Catalonia within futsal league. Catalan teams also presented the highest values for home advantage in the football league. This suggests considering Catalonia for future work as a region likely to be studied individually in terms of territoriality.
    Key Words:Home advantage, territoriality, regions, football, futsal

    El propósito de la investigación fue estudiar la ventaja de jugar en casa en la Liga de Fútbol Profesional y en la Liga Nacional de Fútbol Sala de España de modo general, y realizar un análisis por regiones para determinar qué variaciones geográficas se dan y si éstas pueden ser interpretadas en términos de la territorialidad como factor asociado a la ventaja de jugar en casa. Se estudiaron las últimas quince temporadas disputadas desde la implantación del sistema actual de tres puntos por victoria en la temporada 1995-96. Se encontró ventaja de jugar en casa en las dos ligas, con valores próximos a la media mundial del fútbol. El análisis individual tras ajustar el nivel de los equipos no mostró diferencias significativas entre los diferentes conjuntos. El análisis comparativo por

  2. Caracterización de la utilización de innovación en el sector bancario: Una aproximación hacia la adquisición de ventajas competitivas

    OpenAIRE

    Herazo Villa, Jesús Alejandro; Restrepo Ramírez, Susana; Yi Forero, Alex Daniel

    2013-01-01

    Investigación exploratoria mixta siguiendo un método deductivo con la que se logró caracterizar el grado de utilización de innovación en el sector bancario y su utilidad en la adquisición de ventajas competitivas con la ayuda de del modelo del Radar de Innovación.

  3. Técnicas moleculares para la detección e identificación de patógenos en alimentos: ventajas y limitaciones

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    Carolina Palomino-Camargo

    2014-09-01

    Full Text Available Las enfermedades transmitidas por alimentos, ocasionadas por microorganismos patógenos, constituyen un grave problema de salud pública a nivel mundial. Los métodos microbiológicos utilizados comúnmente en la detección de estos patógenos, de origen alimentario, son laboriosos y consume mucho tiempo. Esta situación, aunada a la demanda por resultados inmediatos y a los avances tecnológicos, ha conducido al desarrollo de una amplia gama de métodos rápidos en las últimas décadas. En base a esto, la presente revisión describe las ventajas y limitaciones de los principales métodos moleculares utilizados en la detección e identificación de microorganismos patógenos transmitidos por alimentos. Para ello, se consideró la actualidad de la información consultada, el análisis objetivo de la temática y su alcance. La literatura reciente reporta un número significativo de técnicas moleculares, alternativas, sensibles y selectivas para la detección, enumeración e identificación de microorganismos patógenos en alimentos, siendo la reacción en cadena de la polimerasa (PCR la plataforma más popular, mientras que la secuenciación de alto rendimiento se perfila como una técnica de gran aplicabilidad a futuro. Sin embargo, aun con todas las ventajas que ofrecen estas novedosas metodologías, no se deben pasar por alto sus limitaciones. Así, por ejemplo, los métodos moleculares no constituyen protocolos estandarizados, lo que dificulta su utilización en algunos casos. Por esta razón se debe trabajar arduamente para superar tales limitaciones y mejorar la aplicación de estas técnicas en matrices tan complejas como los sistemas alimenticios.

  4. La duración en el poder y el rendimiento electoral de los partidos nacionalistas gobernantes: ¿la ventaja competitiva del nacionalismo?

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    Sonia Alonso

    2008-01-01

    Full Text Available Este trabajo se pregunta si el hecho de apelar a identidades supuestamente primordiales, y por tanto fuertemente arraigadas y estables, ha aportado a los partidos nacionalistas alguna ventaja competitiva a lo largo del tiempo frente a otros partidos políticos basados en otras identidades, como las de clase o las religiosas. Para ello, el trabajo compara los partidos nacionalistas y no nacionalistas de los gobiernos regionales de Canadá, Dinamarca, España, Italia y Reino Unido, centrándose en tres indicadores empíricos: el rendimiento electoral, la fluctuación de los niveles de voto y la duración de los partidos gobernantes en el gobierno. Los resultados muestran que los partidos no nacionalistas son, en general, más severamente castigados que los partidos nacionalistas, especialmente en gobiernos de coalición. En términos de duración en el gobierno, sin embargo, no se aprecian diferencias significativas entre los partidos nacionalistas y los que no lo son.

  5. Diseño de sistema controlador de riego a distància y estudio de la mejora de la ventaja competitiva del medio agrícola

    OpenAIRE

    Sampériz Alós, Miguel

    2013-01-01

    I. Introducción La producción de Alfalfa en la región de Aragón. Descriptivo de la región, de los tipos de cultivo, de cómo funciona actualmente el sistema de riesgo mostrando los problemas y dando estadísticas de las pérdidas en volumen de producción (estimado) y costo. Ventaja Competitiva y nuevas tecnologías. Teoría del análisis de Porter con su ventaja competitiva, la teoría de cómputo móvil, aplicaciones móviles, cómo desarrollarlas, plataformas de desarrollo y habil...

  6. Ventajas del uso de la inyección electrónica para vehículos diesel pesados en las condiciones de Cuba. // Advantages of electronic injection for diesel engines in heavy duty equipment.

    Directory of Open Access Journals (Sweden)

    J. Luis Reyes González

    2002-09-01

    Full Text Available Tomando en cuenta la importancia que tiene para Cuba el obtener una eficiencia energética elevada en los motores decombustión interna, al igual que el control de las emanaciones de gases tóxicos en los mismos, se realizó este trabajo dondese demuestran las ventajas tanto en el orden económico como ecológico de los motores diesel con mando electrónico paraequipos pesados empleados en la transportación de carga por camiones en la empresa Cubalse.Por medio de métodos experimentales y estadísticos, se obtuvo el consumo de combustible y la humosidad en motores coninyección electrónica (Detroit y en motores que utilizan los métodos tradicionales (Cummins. Los rresultadosdemostraron la superioridad en ambos aspectos de los motores con inyección electrónica.Se realizó una valoración del tiempo de amortización de la inversión inicial necesaria para utilizar en el parque existenteesta novedosa técnica de la inyección electrónica.Palabras claves: Eficiencia energética, inyección electrónica, consumo de combustible, motores de combustióninterna.__________________________________________________________________Abstract.Taking into consideration the importance of achieving a high efficiency in the internal combustion engines and emissioncontrol of the exhaust gases, this paper deals with economical and environmental advantages of the electronic controlleddiesel engines in heavy-duty trucks, which are used by Cubalse in the transportation. The fuel consumption and the sootemission in Detroit motors (with electronic injection system and Cummins (with traditional system, were studied usingstatistic and experimental methods, and the Detroit proved to be superior in both parameters. The pay back time for theinvestment needed to change the systems of all the existent trucks were calculatedKey words: Energetic efficiency, electronic injection, fuel consumption, internal combustion engine.

  7. Deficiencias, limitaciones, ventajas y desventajas de las metodologías de análisis sísmico no lineal

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    Mauricio Alexander Mora

    2006-07-01

    Full Text Available El presente trabajo está dirigido a la comparación de las metodologías de análisis sísmico: dinámico cronológico no lineal, pushover tradicional, y dos procedimientos modales. La comparación se realizó a partir del estudio de un edificio de mediana altura, aporticado, de concreto reforzado, representativo de las edificaciones típicamente construidas en Bucaramanga. La estructura fue sometida a uno de los sismos definidos por el estudio de microzonificación de la ciudad, escalado a diferentes valores de aceleración pico efectiva. Los resultados obtenidos fueron comparados en términos de desplazamientos y derivas, con lo cual se pudieron detectar algunas deficiencias, limitaciones, ventajas y desventajas de las metodologías utilizadas, concluyendo que las metodologías modales son una buena aproximación para la determinación del comportamiento sísmico de estructuras de concreto reforzado.This research presents the comparison of different non linear analysis methodologies: the non linear response history analysis, the traditional pushover methodology, and two modal pushover methodologies. A medium rise reinforced concrete building, with moment resisting space frame, representative of the typical buildings in Bucaramanga, is examined using one of the earthquakes in the microzonation study of the city, which was scaled to different values of effective peak acceleration. The comparison of the results (floor displacements and interstory drifts permitted to find deficiencies, limitations, advantages and disadvantages of the methodologies used. It was found that Modal Methodologies are a good approach to assess the seismic performance of reinforced concrete buildings

  8. Ventajas del uso de las TIC en la enseñanza/aprendizaje de la materia Contaminación de Suelos Advantages of Information and Communication Technologies (ICT use in the teaching/learning process of Soil Pollution subject

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    M.L. Andrade

    2010-01-01

    Full Text Available Se pusieron de manifiesto las ventajas de la enseñanza de la materia Contamina­ción de Suelos mediante el uso de las TIC, adaptando la metodología al espacio europeo de educación superior, respecto al sistema tradicional. Este evidenció un 20% de abandono, gran inasistencia a las clases teóricas, seminarios y tutorías, conduciendo a que el 35% no superasen la materia. Los resultados del sistema ensa­yado fueron que los alumnos adquirieron las habilidades y competencias necesarias, la asistencia a las actividades práctica­mente total, todos realizaron los trabajos encomendados, conduciendo a la supera­ción de la materia con buenas calificacio­nes. La observación directa por el profe­sor en tutorías y seminarios, la participa­ción en actividades docentes, los objeti­vos, competencias y destrezas consegui­dos, la realización de los trabajos teóricos y prácticos, la capacidad de interpretación y tratamiento de los datos, la habilidad para extraer conclusiones y su exposición pública indicó un buen conocimiento de la materia.It was highlighted advantages in the teaching of the subject “Soil Pollution” through the use of ICTs, adapting the meth­odology to the European Higher Education Area, with respect to the traditional teaching method. It showed 20% of neglect, absence of large lectures, seminars and tutorials, leading to 35% does not exceed the subject. The results of the system tested were that students ac­quired the necessary skills and competence, assistance for the activities almost complete, all carried out their work, leading to over­coming the subject with good grades. Direct observation by the teacher in tutorials and seminars, participation in educational activi­ties; objectives, competencies, and skills ac­quired; the execution of theoretical and prac­tical work; the ability of processing and in­terpretation of data, the ability to draw con­clusions and his public presentation showed a good

  9. Ventajas del análisis Wavelet sobre el análisis de Fourier para la interpretación del ruido electroquímico

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    Espada, L.

    2003-12-01

    Full Text Available Given its simplicity and low cost compared to other types of methodologies, the measurement and interpretation of Electrochemical Noise, is consolidating itself as one of the analysis methods most frequently used for the interpretation of corrosion. As the technique is still evolving, standard treatment methodologies for data retrieved in experiments do not exist yet. To date, statistical analysis and the Fourier analysis are commonly used in order to establish the parameters that may characterize the recordings of potential and current electrochemical noise. This study introduces a new methodology based on wavelet analysis and presents its advantages with regards to the Fourier analysis in distinguishing periodical and non-periodical variations in the signal power in time and frequency, as opposed to the Fourier analysis that only considerers the frequency.

    Por su sencillez y bajo coste frente a otros tipos de metodologías, la medida e interpretación del Ruido Electroquímico, REQ, se está consolidando como uno de los métodos de análisis más utilizados para la interpretación del fenómeno de la corrosión. Al ser una técnica en desarrollo, no existen todavía metodologías estandarizadas de tratamiento de los datos obtenidos en los experimentos. Hasta la fecha, se suelen utilizar el análisis estadístico y el análisis de Fourier para establecer parámetros que puedan caracterizar a los registros de ruido electroquímico de potencial e intensidad. En este trabajo se introduce una nueva metodología basada en el análisis Wavelet que presenta las ventajas, respecto del análisis de Fourier, de poder distinguir variaciones periódicas y no periódicas de la potencia de la señal tanto en el dominio del tiempo, como en el de la frecuencia, y no sólo en el dominio de la frecuencia como ocurre en el caso del análisis de Fourier.

  10. Ventajas competitivas: Una propuesta paso a paso de búsqueda y aplicación de cadena de valor adaptada a empresas aéreas. Caso Patagonia- Argentina

    Directory of Open Access Journals (Sweden)

    María Alejandra Gazzera

    2005-05-01

    Full Text Available El desarrollo del proceso de búsqueda de ventajas competitivas de una empresa se puede plantear como un esfuerzo que se sigue en tres grandes líneas de actuación: la búsqueda centrada en la empresa, centrada en el entorno, y centrada en los competidores. Si bien la búsqueda de ventajas competitivas está estrechamente interrelacionada y vinculada entre las tres líneas, el presente trabajo se centrará en la primera de ellas, es decir al interior de la empresa, sin perder de vista la relación que tienen las empresas con su entorno o mercado, mediante la aplicación de la cadena de valor de Michael Porter (1985 adaptada a las empresas aéreas que operaban desde y hacia la ciudad de Neuquen, puerta de entrada a la Patagonia Argentina Es necesario destacar que no existen al presente, año 2005, estudios de este tipo en el sector mencionado en Argentina, pero en otros sectores productivos y aún en empresas aéreas de otros países, la cadena de valor ha demostrado su utilidad como tecnología de reflexión estratégica para generar valor en el cliente y para dirigir los esfuerzos de la empresa hacia la consolidación o creación de ventajas competitivas sostenibles en el tiempo.

  11. Un análisis de la gestión de la calidad total y de la gestión del conocimiento como fuente de ventajas competitivas.

    OpenAIRE

    Mihi Ramírez, Antonio

    2008-01-01

    La importancia relativa de los factores productivos ha cambiado, resultando crucial que los procesos de gestión de empresas tengan en cuenta la gestión del conocimiento. Además, la gestión de la calidad total guarda una estrecha relación con la gestión del conocimiento, y son también una fuente importante de ventajas competitivas. La fi nalidad de esta investigación es analizar cómo la gestión de la calidad y la gestión del conocimiento actúan, ambas, como creadoras de las competencias esenci...

  12. Uso de tecnologías de información y comunicación para la negociación internacional ¿ventaja para las empresas colombianas?

    OpenAIRE

    Baena Rojas, José Jaime; Cano Arenas, José Alejandro; Jarrin Quintero, Jairo Alberto; Pérez Arroyave, Hugo Román

    2014-01-01

    Este artículo analiza y reflexiona sobre el uso y las ventajas de las Tecnologías de Información y Comunicación (TIC) en los procesos de negociación internacional de las empresas colombianas, todo ello a partir de un estudio de campo realizado en 380 empresas, soportado por entrevistas telefónicas. De los resultados obtenidos se concluye que en Colombia la mayoría de empresas utilizan, para sus procesos de negociación internacional, TIC genéricas y convencionales, las cuales influyen favorabl...

  13. Ventajas del colgajo frontal expandido para la reconstrucción nasal Advantages of the expanded frontal flap for nasal reconstruction

    Directory of Open Access Journals (Sweden)

    Julio César Gálvez Chávez

    2010-12-01

    Full Text Available INTRODUCCIÓN. Desde 1957 la expansión tisular se ha convertido en una técnica muy utilizada en cirugía reconstructiva, pues permite obtener gran cantidad de tejido blando para corregir defectos cutáneos. En Cuba se ha publicado muy poco sobre la utilización de expansores cutáneos de la región frontal para la reconstrucción nasal. El objetivo de este trabajo fue caracterizar la utilidad del colgajo frontal expandido, para la reconstrucción de defectos nasales distales de espesor total en pacientes con frente corta. MÉTODOS. Se realizó un estudio descriptivo, prospectivo, con pacientes con defectos nasales secundarios a cirugía oncológica, traumatismos y otras causas, a los que se les practicó una reconstrucción nasal con colgajo frontal expandido en el Instituto Nacional de Oncología y Radiobiología y el Hospital «Hermanos Ameijeiras», entre junio de 1999 y mayo de 2007. RESULTADOS. Hubo una ganancia promedio de 1,0 cm en longitud del colgajo frontal expandido con respecto al diseño oblicuo sin expansión. Se logró la reconstrucción de la cubierta cutánea en todos los casos, incluso en los defectos más distales, como los del ala nasal. El cierre de la zona donante siempre fue de forma directa. CONCLUSIONES. Se pudo caracterizar la utilidad del colgajo frontal expandido en la muestra estudiada y se encontró entre sus ventajas fundamentales la ganancia en longitud con respecto a la distancia vertical de la frente. Concordamos con la mayoría de los autores en cuanto a su utilidad, siempre que esté indicado y disponible, y en que es un recurso alternativo cuando existe poco tejido disponible para la reconstrucción de los defectos nasales.INTRODUCTION. From 1957, the tissues expansion has becomes a very used technique in reconstructive surgery, since allows to obtain abundant soft tissue to correct cutaneous defects. In Cuba there aren't much publications on the use of cutaneous expanders of frontal region to nasal

  14. VENTAJAS COMPETITIVAS DE LAS EMPRESAS DE TELEFONÍA MÓVIL EN AMÉRICA LATINA. Análisis desde la perspectiva de los grupos estratégicos

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    Mónica García-Ochoa Mayor

    2015-01-01

    Full Text Available El objetivo del presente artículo es estudiar la estructura de la industria de telefonía móvil en los países latinoamericanos, identificando la existencia de grupos estratégicos así como analizando las diferencias de desempeño empresarial entre los mismos. El propósito final es identificar las ventajas competitivas de los grupos con mejor desempeño, así como las estrategias que les han llevado a conseguirlo. El análisis empírico se ha llevado a cabo utilizando datos de una muestra de las 22 empresas latinoamericanas con mayor capitalización bursátil de la industria en el año 2013. Los resultados revelan la existencia de cinco grupos estratégicos y la presencia de diferencias significativas en el desempeño empresarial intergrupal. Las variables determinantes de las ventajas competitivas de los grupos con mejor desempeño son la cuota de mercado, el número de suscriptores y la fidelidad de los clientes.

  15. Existen ventajas en el abordaje extraperitoneal para el tratamiento del aneurisma de aorta abdominal? Are there advantages in the extraperitoneal approach for the treatment of abdominal aortic aneurysm?

    Directory of Open Access Journals (Sweden)

    Heinz Hiller

    2010-02-01

    Full Text Available Existen controversias acerca de las posibles ventajas del abordaje transperitoneal vs. extraperitoneal en la cirugía de aneurisma de aorta abdominal; con este último, algunos estudios reportan menor morbilidad y complicaciones operatorias. Este estudio describe los resultados que se obtuvieron con los dos abordajes en un solo centro de referencia. Es un estudio retrospectivo, descriptivo, de doce años, en un grupo de 299 pacientes con diagnóstico de aneurisma de aorta abdominal que fueron intervenidos de manera electiva y distribuidos en dos grupos según el abordaje (transperitoneal = grupo 1, extraperitoneal = grupo 2. En total se operaron 93 pacientes en el grupo 1 y 206 pacientes en el 2. En ambos predominaron pacientes del sexo masculino. La edad media fue de 68 años. Las frecuencias de co-morbilidades fueron similares en los dos grupos. Se registró una tendencia a menor número de reoperaciones en el grupo 2 (12,9% vs. 5,8%, De otra parte, se observó una tendencia de mayores complicaciones post-operatorias en el grupo 1 con una frecuencia de 30,1% vs. 12,6% en el grupo 2; sin embargo, el tipo de complicaciones fue similar. Los resultados mostraron una estancia hospitalaria media de 13,3 días (DE ± 10,4 vs. 7,19 días (DE ± 4,20 p= 0,00001, estancia post-operatoria media de 9,16 días (DE ± 8,1 vs. 5,62 días (DE ± 3,46 p= 0,001 y estancia en la unidad de cuidados intensivos media de 2,76 días (DE ± 4,19 vs. 1,56 días (DE ± 1,86 p= 0,00001 en los grupos 1 y 2 respectivamente. La mortalidad inmediata total fue de 3,3%. La frecuencia de mortalidad para los grupos fue de 6,5% (n= 6 vs. 1,9% (n= 4 respectivamente. En nuestra experiencia el abordaje por la vía extraperitoneal presenta una tendencia favorable para los pacientes en cuanto a la estancia hospitalaria, la estancia en la unidad de cuidados intensivos, la frecuencia de complicaciones post-operatorias y la frecuencia de re-intervenciones en el post-operatorio inmediato

  16. La Visión de la empresa Basada en los Recursos: las personas y la formación como fuentes de ventaja competitiva desde dicha visión.

    OpenAIRE

    Basterretxea, Imanol

    2014-01-01

    Este documento corresponde a un capítulo de tesis doctoral. Si citas este documento, cítalo por favor como: Basterretxea, I. (2008): La política de formación como fuente de ventaja competitiva en la experiencia Mondragón. Un análisis desde la visión basada en los recursos, Tesis Doctoral, Universidad del País Vasco, Dpto. Economía Financiera II. ISBN:978-84-9860-117-6 A lo largo de este capítulo, hemos realizado una revisión de la principal literatura que conforma la Visión Basada en lo...

  17. Compulsory equal opportunities plans: Advantages of equal opportunities between women and men for companies Planes de igualdad por ley: Ventajas de la igualdad de oportunidades entre mujeres y hombres para las empresas

    Directory of Open Access Journals (Sweden)

    Olga Pons Peregort

    2009-04-01

    Full Text Available The Equal Opportunities Spanish Law (from 2007, establishes that those companies with more than 250 workers have to design and implement an equal opportunities plan between women and men. Since the “cost-benefit” relation of equal opportunities has not been yet studied, companies have to convince themselves about the convenience of designing and adopting an equal opportunities plan by means of non quantitative reasons. In this paper the main advantages of equal opportunities for companies are discussed, and some criteria are offered for its application.La Ley de Igualdad Efectiva de mujeres y hombres, aprobada en España en 2007, establece la obligatoriedad de elaborar e implantar planes de igualdad de oportunidades a aquellas empresas con más de 250 trabajadores. La relación “coste-beneficio” de la igualdad de oportunidades (relación entre el nivel de igualdad de oportunidades en una empresa y sus resultados es un tema que no ha sido aún explorado y, por ello, las empresas deben autoconvencerse de la conveniencia de implantar planes de igualdad por medio de argumentos no cuantitativos. En este artículo se discuten las principales ventajas que puede ofrecer a las empresas la igualdad de oportunidades entre mujeres y hombres y se ofrecen criterios y herramientas para su aplicación.

  18. Análisis diacrónico de las ventajas e inconvenientes del uso de las TIC en el ámbito educativo a través de mapas conceptuales multimedia

    Directory of Open Access Journals (Sweden)

    López Meneses, Eloy

    2017-06-01

    Full Text Available El artículo presenta un recorrido diacrónico que describe una experiencia innovadora universitaria basada en el desarrollo de mapas conceptuales multimedia con el objetivo de analizar la percepción de los estudiantes sobre las ventajas e inconvenientes del uso de las Tecnologías de la Información y la Comunicación (TIC en el ámbito educativo. Estos mapas fueron presentados, con la aplicación Prezi, por los estudiantes que cursaban la asignatura de Tecnologías de la Información y la Comunicación en la titulación de Grado de Educación Social y Doble Grado de Educación Social y Trabajo Social durante tres cursos académicos comprendidos entre 2010 y 2013 en la Universidad Pablo de Olavide de Sevilla. La metodología de corte cualitativo y descriptivo permitió revisar las 342 aportaciones realizadas por los estudiantes. Entre las conclusiones más importantes se destaca que los futuros educadores valoran los beneficios educativos de las TIC para la mejora de los procesos de aprendizaje.

  19. VENTAJAS Y DESVENTAJAS DEL BILINGÜISMO

    Directory of Open Access Journals (Sweden)

    Alfredo Ardila

    2012-06-01

    Full Text Available Las personas bilingües tienen que coordinar dos sistemas lingüísticos. Esto implica algunas ganancias, pero también un costo. Las ganancias del bilingüismo incluyen: un incremento de la flexibilidad mental; una superioridad en el desarrollo de aquellas funciones cognitivas relacionadas con la atención y la inhibición; el uso de una cantidad mayor de estrategias cognoscitivas en la solución de problemas; un aumento de la llamada conciencia metalingüística; y una habilidad mayor de comunicación. Entre los costos del bilingüismo se menciona: cierto retraso aparente en la adquisición del lenguaje; una interferencia entre ambos sistemas fonológicos, léxicos y gramaticales; y un posible decremento en el vocabulario en las dos lenguas. Se concluye que existe una gran variabilidad de experiencias lingüísticas en las personas bilingües y un gran número de variables afecta su ejecución en diferentes tareas intelectuales.

  20. Ventajas y placeres secretos de estados depresivos

    Directory of Open Access Journals (Sweden)

    Günter Jursch

    2005-04-01

    Full Text Available Las depresiones y los estados depresivos varían de una persona a otra. Si se quiere trabajar para mejorar la situación de las víctimas de estos males, sería indicado saber en qué se distinguen los diferentes fenómenos y dónde se encuentra la causa. Pues las depresiones a menudo cumplen una función que suele aparecer camuflada.

  1. Ventajas de los motores de flujo axial

    Directory of Open Access Journals (Sweden)

    Alberto M Basanta Otero

    2011-03-01

    Full Text Available Es importante conocer sobre una familia de motores que a diferencia de los convencionales o tradicionales no presentanun flujo rotatorio radial, denominados motores de flujo axial. Dichos motores presentan altos valores de par motriz abajas velocidades, una alta eficiencia y alta densidad de potencia. Este trabajo constituye un breve análisis dealgunos motores de la referencia bibliográfica.  Is important to know about a family of motors that at difference whit the traditional, don't have a rotator radial flux,called, axial flux motors. These motors have high torque for low speed, high efficiency and high power density. Thiswork is a brief analysis of several motors of the bibliographic references.

  2. Bovine paratuberculosis: a review of the advantages and disadvantages of different diagnostic tests Paratuberculosis bovina: una revisión sobre las ventajas y desventajas de las diferentes pruebas diagnósticas

    Directory of Open Access Journals (Sweden)

    Liliana R. Gilardoni

    2012-09-01

    varían según el estadio de la enfermedad de los animales que se evalúan. La correcta elección y aplicación de cada una de estas pruebas asegura el éxito del diagnóstico y permite establecer un programa de control. El objetivo de este trabajo es la recopilación y discusión de las diferentes pruebas diagnósticas utilizadas en la detección de los animales infectados por Map, concentrándose en sus ventajas y desventajas.

  3. La responsabilidad social de las organizaciones: ¿Factor de ventaja competitiva? Las acciones sociales de las organizaciones en relación con el tejido social La responsabilidad social de las organizaciones: ¿Factor de ventaja competitiva? Las acciones sociales de las organizaciones en relación con el tejido social

    Directory of Open Access Journals (Sweden)

    Mery Gallego Franco

    2006-06-01

    Full Text Available Mirar las organizaciones desde un enfoque sistémico, permite verlas como un conjunto de partesinteractuantes e interdependientes que en su dinámica conforman un sistema mayor que es lasociedad. Desde esta perspectiva puede comprenderse que cada organización afecta y es afectadapor el entorno en el cual se desenvuelve y que esta mutua relación —de beneficio o perjuicio—determina, en un alto grado, su supervivencia. Ésta es una forma de entender lo que hoy seconoce como Responsabilidad social; sin embargo, este concepto tiene antecedentes desde finalesdel siglo XIX y diversas manifestaciones a lo largo del siglo XX. Más recientemente los efectosnegativos de la globalización, entre otras razones, han forzado el surgimiento de normas, códigosde conducta, guías y otras acciones orientadas a contrarrestar dichos efectos buscando crearcondiciones de vida laboral y social más dignas.El cumplimiento de la responsabilidad por parte de cada organización es un imperativo ético,moral y social pues es desde el cumplimiento de ésta como se contribuye al fortalecimiento y/o recuperación del Tejido Social y a la construcción de lo que se conoce como Capital Social. Toda organización debe cumplir responsabilidades sociales tanto en su interior, conel personal que en ella labora, como con los distintos sectores con los cuales interactúaconocidos hoy como Stakeholders.Approaching organizations from a systemic point of view allows us to see them as a group of interactive and interdependent parts of a larger system called society. This perspective lets us understand that each organization simultaneously affects and is affected by its environment, and this reciprocal relationship —of benefit or damage— largely determines its survival. This paper intends to explain, in a certain way, what is known today as social responsibility, although this concept has antecedents that go back to the end of the Nineteenth century and diverse

  4. Absorption heat pump integrated in an effluent purification system; Bomba de calor por absorcion integrada a un sistema de purificacion de efluentes

    Energy Technology Data Exchange (ETDEWEB)

    Santoyo, Socrates; Siqueiros, Javier; Heard, Christopher; Santoyo, Edgar [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    The results derived of the integration of an absorption heat pump to an industrial effluents purification system, are presented. The advantages of these heat pumps with respect to heat pumps by mechanical compression of vapor, as well as the advantages in using absorption heat pumps in simple distillation systems, are mentioned. Finally, a description is made of the equipment designed and built, as well as the results obtained in a preliminary test. [Espanol] Se presentan los resultados derivados de la integracion de una bomba de calor por absorcion a un sistema de purificacion de efluentes industriales. Se mencionan las ventajas de este tipo de bombas de calor con respecto a las de calor por compresion mecanica de vapor, asi como las ventajas de usar bombas de calor en sistemas de destilacion simple. Finalmente, se describe el equipo disenado y construido, asi como los resultados obtenidos de una prueba preliminar.

  5. An examination of ultrafiltration pretreatment: cost-savings and performance advantages in seawater desalination; Evaluation de la ultrafiltracion comp pretratamiento: disminucion de costes y ventajas de operacion en la desalacion de agua mar

    Energy Technology Data Exchange (ETDEWEB)

    Busch, M.; Garcia Molina, V.; Chu, R.; Rosenberg, S.

    2010-07-01

    Early adopters of ultrafiltration (UF) technology for pretreatment in SWR desalination plants have used membrane-based technology mainly for its ability to reliability treat difficult feedwater. Often a case is made that integrated, or dual membrane systems are less expensive than conventional schemes. Sometimes a case is made that even a pretreatment system can be less expensive, which is especially true when a stand-alone UF unit is compared to enhanced conventional pretreatment techniques that use extended primary treatment (chamber coagulation, clarification processes) and multiple stages of media filtration. This article focuses on more recent drivers for UF adoption, especially on treatment schemes that reduce costs by minimizing environmental impact and the use of primary treatment techniques. (Author) 4 refs.

  6. Incumbents without a Campaign Finance Advantage: Competition and Money in Chile’s Congressional Elections Sin una ventaja financiera: Incumbentes y el gasto electoral en las elecciones parlamentarias de Chile

    Directory of Open Access Journals (Sweden)

    Joel W. Johnson

    2011-01-01

    Full Text Available Research from various countries has shown that incumbents in legislative elections raise and spend more money when they face a tougher contest. A statistical analysis of Chilean candidates’ campaign finance disclosures shows the opposite: an inverse relationship between incumbent spending and electoral competitiveness. This occurs because Chile’s deputies are relatively limited in their influence over policy and pork and because the congressional electoral system makes most competitive contests relevant only to the intra-coalitional balance of power. This account implies that political finance is as much a function of political systems and the supply of contributions as it is candidates’ demand for funds, and motivates several hypotheses about campaign finance in Chile. Among others, the analysis confirms that incumbents and challengers compete on a level playing field, spending similar amounts of campaign finance. The paper also illustrates that incumbents and challengers fare equally well in Chile’s “secret” donation system.Estudios en varios países han demostrado que los incumbentes en las elecciones legislativas recaudan y gastan más dinero cuando se enfrentan a una competencia más dura. No obstante, el análisis estadístico del financiamiento electoral de candidatos chilenos demuestra lo contrario: una relación inversa entre los gastos de los incumbentes y la competitividad electoral. Esto ocurre porque los diputados son relativamente limitados en su influencia sobre políticas públicas e incluso en la dispensa de favores canalizados (pork-barrel y porque el sistema binominal hace que la competencia suceda principalmente al interior de coaliciones. La implicación lógica es que el financiamiento político es tanto una función del sistema político y de la oferta de contribuciones de campaña, como de la demanda de los candidatos por esos fondos, hecho que motiva la presentación de varias hipótesis sobre la financiaci

  7. Factores Críticos de Éxitos en Busca de la Ventaja Competitiva dentro del Comercio Electronico: un Estudio Empírico en las Empresas Paraguayas

    Directory of Open Access Journals (Sweden)

    Chap Kau Kwan Chung

    2014-10-01

    Full Text Available Electronic commerce has been one of the most active fields of investigation in Information Technology in the last few years. It would be interesting to find out which critical factors keep electronic commerce from achieving success and which factors would be regarded as a sustainable competitive advantage for companies. In this investigation we have developed a model for the achievement of success in electronic commerce based on what is proposed by DeLone and McLean regarding the current model to achieve success in Information Systems, tested by the AMOS (Analysis of Moment Structures, through a sample of 55 Paraguayan companies. As for the bibliography used, we have performed a meta-analysis study with the purpose of identifying the most relevant journals, with their respective current authors and the indicators that represent the importance to the project. The results have yielded valuable conclusions to the Paraguayan reality as only two of the 10 indentified critical factors for success were detected: “Experts in information technology (IT and infrastructure” and “Interoperability of the system”. These are regarded as factors which have been converted into a timely competitive advantage but not into a sustainable competitive advantage through time, due to reasons such as a lack of experts in information technology (IT, particularly regarding the knowledge of electronic commerce and the sluggishness of development of electronic commerce which carries out online activities.

  8. Los intangibles del aceite de oliva como ventaja competitiva

    OpenAIRE

    Ruiz Guerra, Ignacio; Martín López, Víctor Manuel; Molina Moreno, Valentín

    2012-01-01

    Objeto: Utilización de nuevas estrategias para el reposicionamiento del Aceite de Oliva a través de los activos intangibles.Diseño/metodología/enfoque: Aplicación del marco teórico de la intangibilidad al Aceite de Oliva y conceptualización de los activos intangibles y desarrollo de un estudio estadístico cuantitativo de valoración de los conceptos planteados.Aportaciones y resultados: Se propone una conceptualización de lo...

  9. Los intangibles del aceite de oliva como ventaja competitiva

    OpenAIRE

    Ruiz Guerra, Ignacio; Martín López, Víctor Manuel; Molina Moreno, Valentín

    2012-01-01

    Objeto: Utilización de nuevas estrategias para el reposicionamiento del Aceite de Oliva a través de los activos intangibles. Diseño/metodología/enfoque: Aplicación del marco teórico de la intangibilidad al Aceite de Oliva y conceptualización de los activos intangibles y desarrollo de un estudio estadístico cuantitativo de valoración de los conceptos planteados. Aportaciones y resultados: Se propone una conceptualización de los activos intangibles que conforman el significado del Aceit...

  10. Ventajas y desventajas del bilingüismo

    Directory of Open Access Journals (Sweden)

    Alfredo Ardila

    2012-01-01

    Full Text Available Las personas bilingües tienen que coordinar dos sistemas lingüísticos. Esto implica algunas ganancias, pero también un costo. Las ganancias del bilingüismo incluyen: un incremento de la flexibilidad mental; una superioridad en el desarrollo de aquellas funciones cognitivas relacionadas con la atención y la inhibición; el uso de una cantidad mayor de estrategias cognoscitivas en la solución de problemas; un aumento de la llamada conciencia metalingüística; y una habilidad mayor de comunicación. Entre los costos del bilingüismo se menciona: cierto retraso aparente en la adquisición del lenguaje; una interferencia entre ambos sistemas fonológicos, léxicos y gramaticales; y un posible decremento en el vocabulario en las dos lenguas. Se concluye que existe una gran variabilidad de experiencias lingüísticas en las personas bilingües y un gran número de variables afecta su ejecución en diferentes tareas intelectuales.

  11. Sarcophagidae (Diptera de importancia forense en la puna de Catamarca, Argentina: a ovoviviparidad como ventaja en condiciones de extrema aridez Sarcophagidae (Diptera of forensic importance at a high altitude desert in Catamarca, Argentina: ovoviviparity as an advantage under extreme arid conditions

    Directory of Open Access Journals (Sweden)

    Fernando H. Aballay

    2011-12-01

    Full Text Available A pesar de ser fauna necrófaga y de estar presentes en cadáveres humanos, los Sarcophagidae no suelen utilizarse en estudios forenses debido a la dificultad en su identificación y la poca información sobre su biología. En este trabajo, se identificaron las especies de Sarcophagidae asociadas a cadáveres y se estudió su relación con los estados de descomposición. Se analizaron las preferencias por los sustratos cadavéricos (cerdo y llama y las condiciones microambientales (sol y sombra en un ambiente de altura (3.600 msnm, durante la primavera. Se utilizaron dos cadáveres de cerdo dispuestos al sol y a la sombra y un cadáver de llama dispuesto al sol. Se colectaron 597 individuos pertenecientes a cinco especies de Sarcophagidae: M. antofagastensis Mulieri, Mariluis & Aballay (n=347, M. quimaliensis (Lopes (n=117, M. rusca (Hall (n=32, M. penai (Lopes (n=5 y M. aulacophyto Pape (n=96. Tanto M. antofagastensis, como M. quimaliensis fueron las únicas especies con colonización efectiva y representaron el 78% del total de adultos colectados. Microcerella antofagastensis fue la colonizadora primaria. Ambas especies respondieron de forma similar ante las condiciones microambientales y prefirieron el cadáver de cerdo. Se discute la importancia de M. antofagastensis y M. quimaliensis, como especies indicadoras y las posibles ventajas de la ovoviviparidad frente a otras especies ovíparas, en condiciones de extrema aridez.Despite their prevalence in human corpses during decomposition, Sarcophagidae are not frequently used in forensic studies due to the difficulty in their identification and to the lack of information on their biology. In this paper, we identified the species of Sarcophagidae associated to corpses and studied their relationship to decomposition stages. We analyzed preferences for different cadaveric substrates (pig and lama and microenvironmental conditions (shade, sun at a site located at 3600 m.a.s.l. during the spring. Two

  12. Advantages of a recovery system implementation of gases of turbo generators, with the cogeneration systems application in process areas; Ventajas de la implementacion de un sistema de recuperacion de gases de turbogeneradores, con aplicacion de sistemas de cogeneracion en areas de proceso

    Energy Technology Data Exchange (ETDEWEB)

    Verazas Mijangos, Enrique [Petroleos Mexicanos (Mexico)

    2007-04-15

    In this article it presented the experience of a project that arises within a scheme based on the legislation that allows the industry to generate electric power for its self-supplying, with the option of transferring the energy surpluses to the network of Federal Electricity Commission or to transport to other centers of consumption, optimizing to its maximum the use of the energy and taking advantage of the installed capacity. This is the case of Petroquimica Pajaritos, engaged in improving the yield energy/product, the installed capacity as well as fulfilling the commitments Mexican Petroleum has acquired with communities where it operates, and of diminishing the atmospheric emissions. [Spanish] En este articulo se presenta la experiencia de un proyecto que surge dentro de un esquema basado en la legislacion que permite a la industria generar energia electrica para su autoabastecimiento, con la opcion de transferir los excedentes de energia a la red de la Comision Federal de Electricidad o portear a otros centros de consumo, optimizando al maximo el uso de la energia y aprovechando la capacidad instalada. Este es el caso de Petroquimica Pajaritos comprometida en mejorar el rendimiento energia/producto, la capacidad instalada, asi como cumplir con los compromisos que Petroleos Mexicanos ha adquirido, con las comunidades donde opera, y de disminuir las emisiones atmosfericas.

  13. Integral system for computer aided design of power line transmission towers; Sistema integral para el diseno asistido por computadora de torres de transmision

    Energy Technology Data Exchange (ETDEWEB)

    Nagore, Gabriel [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1986-12-31

    The profitable use of the advantages offered by the computer aided design, through the integral system for the structural design of power transmission towers (SIDETT) will contribute to facilitate and improve the design of the structures that link the electric power generation centers with the consumers. [Espanol] El aprovechamiento de las ventajas que ofrece el diseno asistido por computadora, a traves del sistema integral para el diseno estructural de torres de transmision (SIDETT), contribuira a agilizar y mejorar el diseno de las estructuras que enlazan los centros de generacion de energia electrica con los consumidores.

  14. Sistema de gestión de redes: diez años de desarrollo; Networt Management System : Ten Years of Development

    Directory of Open Access Journals (Sweden)

    Raúl Fernández Álvarez

    2011-02-01

    Full Text Available En este trabajo se resume a través de los diez módulos más significativos el desarrollo que ha tenido elSistema de Gestión de Redes en los diez años desde su aprobación. Se identifican las ventajas mássignificativas que se logran con su implementación In this work we analyze through the 10 most significant modules the development of the NetworksManagement System in 10 years from his approval, identifying the most significant advantages that ourorganization has achieved by his implementation.

  15. Alianças Estratégicas e Redes Associativas como Fonte de Vantagem Competitiva no Varejo de Material de ConstruçãoStrategic Alliances and Associativism Networks as a Source of Competitiveness Advantage in the Retailers Market of ConstructionAlianzas Estratégicas y Redes Asociativas como Fuente de Ventajas Competitiva en la Venta al por Menor de Material de Construcción

    Directory of Open Access Journals (Sweden)

    PACANHAN, Mário Ney

    2004-01-01

    de posicionamiento estratégico y a la búsqueda constante de ventajas competitivas. Una de las formas que encontró resonancia en el mercado como modelo de gestión, que permite diferenciación y cooperación al mismo tiempo, es la de alianzas estratégicas y entre sus aplicaciones, las redes asociativistas, usadas principalmente por pequeñas organizaciones. Este artículo expone los conceptos de esas modalidades, sus ventajas y desventajas y presenta su uso en las ventas al por menor, específicamente en la red formada por pequeños minoristas en el área de material de construcción formada inicialmente en la ciudad de Maringá en Paraná y que se expandió hacia otras ciudades y estados, y que de diez asociados reúne actualmente 181. El estudio de este caso permite comprobar de qué forma el proceso de formulación y reformulación organizacional se instala y como surgen los puntos positivos y negativos en este proceso interno y en las relaciones de competición y competencia con el mercado que de él adviene.

  16. Fusões e Aquisições sob a Perspectiva da Vantagem Competitiva: o caso da Perdigão Agroindustrial S.A.Mergers and Acquisitions from the Perspective of Competitive Advantage: the Perdigão Agroindustrial S.A. caseFusiones y Adquisiciones bajo la Perspectiva de la Ventaja Competitiva: el caso de la Perdigão Agroindustrial S.A.

    Directory of Open Access Journals (Sweden)

    ARAGÃO, Lindenberg Araújo

    2007-05-01

    ão Agroindustrial S.A.? Searching for an answer to the problem, the study has aimed at checking if the process of acquisition has brought competitive advantage while focusing on two phases (i integration and (ii acquisition management (assimilation. The case was investigated in 16 branches through interviews (face-to-face and on the telephone, and secondary material. The gathering of data took place in 2006 and 2007. The study was of exploratory nature with a qualitative approach. To the consolidation of data the content analysis technique, especially the theme analysis has proven most appropriate. We can conclude that the acquisition of Batavo Frios has generated relative competitive advantage to Perdigão Agroindustrial S.A.RESUMENLas organizaciones que tengan interés en nuevos segmentos de mercado, pueden optar por estrategias de fusión y adquisición. El éxito de esas transacciones es normalmente definido por la expectativa de retorno sobre el capital invertido. Este artículo identificó otra forma de medir los resultados de las adquisiciones a partir de la percepción de los administradores. Definiéndose como resultados, cualquier efecto tangible o intangible en el ambiente organizacional y el posicionamiento de la empresa frente al mercado. Se buscó responder la siguiente cuestión orientadora: ¿la transacción de adquisición de la empresa Batavo Frios generó ventajas competitivas para Perdigão Agroindustrial S.A.? Tratando de encontrar una respuesta para el problema el estudio tuvo como objetivo constatar si el proceso trajo ventajas competitivas, separándolo en dos fases: (i la integración y (ii el gerenciamiento de la adquisición (asimilación. El caso fue investigado en diecisiete filiales por medio de entrevistas (cara a cara o por teléfono y material secundario. La colecta de datos se dio en 2006 y 2007. El estudio fue de carácter exploratorio, con abordaje cualitativo. Para la consolidación de los datos la técnica de análisis de contenido espec

  17. Systems

    International Nuclear Information System (INIS)

    Anon.

    1980-01-01

    Papers in this session describe the concept of mined geologic disposal system and methods for ensuring that the system, when developed, will meet all technical requirements. Also presented in the session are analyses of system parameters, such as cost and nuclear criticality potential, as well as a technical analysis of a requirement that the system permit retrieval of the waste for some period of time. The final paper discusses studies under way to investigate technical alternatives or complements to the mined geologic disposal system. Titles of the presented papers are: (1) Waste Isolation System; (2) Waste Isolation Economics; (3) BWIP Technical Baseline; (4) Criticality Considerations in Geologic Disposal of High-Level Waste; (5) Retrieving Nuclear Wastes from Repository; (6) NWTS Programs for the Evaluation of Technical Alternatives or Complements to Mined Geologic Repositories - Purpose and Objectives

  18. systems

    Directory of Open Access Journals (Sweden)

    Alexander Leonessa

    2000-01-01

    Full Text Available A nonlinear robust control-system design framework predicated on a hierarchical switching controller architecture parameterized over a set of moving nominal system equilibria is developed. Specifically, using equilibria-dependent Lyapunov functions, a hierarchical nonlinear robust control strategy is developed that robustly stabilizes a given nonlinear system over a prescribed range of system uncertainty by robustly stabilizing a collection of nonlinear controlled uncertain subsystems. The robust switching nonlinear controller architecture is designed based on a generalized (lower semicontinuous Lyapunov function obtained by minimizing a potential function over a given switching set induced by the parameterized nominal system equilibria. The proposed framework robustly stabilizes a compact positively invariant set of a given nonlinear uncertain dynamical system with structured parametric uncertainty. Finally, the efficacy of the proposed approach is demonstrated on a jet engine propulsion control problem with uncertain pressure-flow map data.

  19. systems

    Directory of Open Access Journals (Sweden)

    Patrick L. Brockett

    1978-01-01

    Full Text Available Suppose S={{Xnj,   j=1,2,…,kn}} is an infinitesimal system of random variables whose centered sums converge in law to a (necessarily infinitely divisible distribution with Levy representation determined by the triple (γ,σ2,M. If {Yj,   j=1,2,…} are independent indentically distributed random variables independent of S, then the system S′={{YjXnj,j=1,2,…,kn}} is obtained by randomizing the scale parameters in S according to the distribution of Y1. We give sufficient conditions on the distribution of Y in terms of an index of convergence of S, to insure that centered sums from S′ be convergent. If such sums converge to a distribution determined by (γ′,(σ′2,Λ, then the exact relationship between (γ,σ2,M and (γ′,(σ′2,Λ is established. Also investigated is when limit distributions from S and S′ are of the same type, and conditions insuring products of random variables belong to the domain of attraction of a stable law.

  20. SYSTEM

    Directory of Open Access Journals (Sweden)

    K. Swarnalatha

    2013-01-01

    Full Text Available Risk analysis of urban aquatic systems due to heavy metals turns significant due to their peculiar properties viz. persis tence, non-degradab ility, toxicity, and accumulation. Akkulam Veli (AV, an urba n tropical lake in south India is subjected to various environmental stresses due to multiple waste discharge, sand mining, developmental activities, tour ism related activitie s etc. Hence, a comprehensive approach is adopted for risk assessment using modified degree of contamination factor, toxicity units based on numerical sediment quality guidelines (SQGs, and potentialecological risk indices. The study revealed the presence of toxic metals such as Cr, C d, Pb and As and the lake is rated under ‘low ecological risk’ category.

  1. Political consequences of the electoral calendar in Latin America: Advantages and disadvantages of simultaneous and separate parliamentary and presidential elections Consecuencias políticas del calendario electoral en América latina: ventajas y desventajas de elecciones simultáneas o separadas para presidente y legislatura

    Directory of Open Access Journals (Sweden)

    José Enrique MOLINA V.

    2010-07-01

    Full Text Available The paper analyzes the ideas put forward by Shugart and Carey (1992 and Mainwaring and Shugart (1997 regarding the combined effect of presidential electoral systems and the timing of the parliamentary elections over political representation and governability. The hypotheses of these authors are contrasted with the results of Latin American presidential elections (1996-2000. The conclusion is reached that, as expected, the timing of presidential and parliamentary elections and the electoral system for president tend to influence the chance that the party or coalition of the president has a sizeable or majority parliamentary representation.El trabajo analiza los planteamientos desarrollados por Shugart y Carey (1992 y Mainwaring y Shugart (1997 con relación al efecto que sobre la gobernabilidad y la representatividad tienen las distintas combinaciones de sistema electoral para presidente de la República con la fecha en que se realizan las elecciones legislativas (simultáneas o separadas con las presidenciales, confrontando las hipótesis que se derivan de estos análisis con los resultados de las elecciones presidenciales celebradas en los países de América Latina entre 1996 y 2000. Se llega a la conclusión de que los resultados electorales tienden a corroborar las hipótesis sobre el efecto combinado del calendario electoral y el sistema electoral presidencial sobre la gobernabilidad y la representatividad, y en particular sobre la posibilidad de que el presidente electo cuente con una fuerza parlamentaria mayoritaria o sólida.

  2. El fatal Kafka y las ventajas de la incomprensión

    OpenAIRE

    Víquez Jiménez, Alí

    2013-01-01

    Por medio principalmente del examen de tres relatos, “El artista del trapecio”, “El artista del hambre” y “Josefina la cantora o el pueblo de los ratones”, este ensayo elabora una estética kafkiana en la que el arte como ejecución de un ars moriendi y el proceso de recepción como “malentendido provechoso” se destacan. 

  3. Ventajas y desventajas del barefoot running. Revisión sistemática

    OpenAIRE

    Aperribay Urrutia, Iñigo

    2014-01-01

    RESUMEN Introducción: Correr “barefoot” es correr “descalzo”, dejando que el pie efectúe su movimiento natural que ayudará a las piernas a atenuar el impacto. Correr “calzado”, altera la propiocepción, modifica la postura y no permite trabajar a los músculos y articulaciones, reduce el impacto del pie; pero, aumenta las fuerzas en rodilla y cadera. Corriendo descalzo hay mejor propiocepción, menos estrés y menos consumo de energía, lo cual implica menor riesgo de lesión. Correr descalzo e...

  4. Biomarcadores para fibrosis hepática, avances, ventajas y desventajas

    OpenAIRE

    A. Cequera; M.C. García de León Méndez

    2014-01-01

    La cirrosis hepática en México es una de las principales causas de muerte en sujetos entre los 25 y los 50 años de edad. Una de las principales razones del fracaso terapéutico es el desconocimiento de los mecanismos moleculares que producen el trastorno hepático y lo hacen irreversible. Entre sus características anatómicas prevalece un depósito excesivo de tejido fibroso que adopta diferentes formas, dependiendo de la etiología y etapa de la enfermedad. La biopsia hepática, considerada tra...

  5. VENTAJAS E INCONVENIENTES DEL USO DE MUESTRAS DE ESTUDIANTES EN CUESTIONARIOS ONLINE

    Directory of Open Access Journals (Sweden)

    Myriam Martínez Fiestas

    2013-07-01

    Full Text Available The use of student samples in consumer research has been widely used since the beginning of the discipline, although this practice has not been without criticism from the academy. In this paper we use the results of two studies conducted on a sample of college students and another obtained from the general population which answered the same questionnaire online. The results show that while the samples of students can provide better response rates, they present a problem because they do not get results similar to those that provide individuals with samples with greater diversity in age and educational level. Thus, while student samples are shown useful in the study of consumer behavior, researchers who use them should be cautious when extrapolating the results to larger populations.

  6. Ventajas y desventajas de las TIC en la enseñanza

    Directory of Open Access Journals (Sweden)

    Daniel Gómez

    2015-10-01

    This paper describes how the application of ICT has advantages and disadvantages when used as a fundamental part in the process of teaching and learning. Technology advances rapidly generating multiple changes and applications in all fields, even education. These changes require teachers to take up the challenge and engage in ongoing preparation for the sole purpose of improving learning outcomes. For this, we performed a qualitative research methodology using a case study.

  7. PROSPECTIVA TECNOLÓGICA COMO VENTAJA COMPETITIVA PARA LA GESTIÓN FINANCIERA EN LAS PYMES

    Directory of Open Access Journals (Sweden)

    Cesar Asdraldo Vargas

    2015-09-01

    Full Text Available Las diferentes tendencias financieras, han sido diseñadas principal­mente para responder a las necesidades de las grandes empresas. Se proyectan los elementos mínimos que se deberían considerar para incorporar, las herramientas de gestión financiera en las pymes y su integración con la gestión del conocimiento, las cuales por tradición han sido marginadas de su aplicación. Se parte de la presentación de unos componentes básicos que ubican al lector en el contexto de las mipymes; se esbozan algunos elementos contables y financieros de aplicación; se consideran elementos sobre análisis de riesgo y valoración de estas empresas, formulando de este modo una visión prospectiva y panorámica en torno a la gestión productiva de las señaladas unidades empresariales.

  8. Responsabilidad social con valor compartido constituyen ventajas competitivas en empresas peruanas y mexicanas

    OpenAIRE

    Gutiérrez Huby, Ana María; Facultad de Ciencias Contables, Universidad Nacional Mayor de San Marcos; Amador Murguia, Eugenia; Universidad de Guadalajara - CULAGOS / México

    2016-01-01

    En este artículo se tiene por objetivo profundizary poner al alcance de los involucrados en el ámbitoempresarial de Perú y México, el conocimiento dela responsabilidad social con valor compartido. Elpropósito es sensibilizar en torno al desarrollo de unagestión empresarial responsable. Entre las conclusionesmás significativas, cabe mencionar: la incipienteimplementación de prácticas responsables pese a laproliferación de información sobre la temática; elejercicio del liderazgo en las práctica...

  9. Estimulación oportuna: ventajas para el desarrollo de su hijo

    Directory of Open Access Journals (Sweden)

    Natalia Salas-Guzmán

    2011-08-01

    Full Text Available Early stimulation presents as it’s principle that “the earlier the child learns, better and more advantages he/she will obtain from the future” (Bravo and Pons, año 1, Nº5, p.66. The family, as a unique and first encounter for the child, supplies a fundamental role in the structure and development of the child's personality, presenting itself as main environment where the child is educated and stimulated; therefore, early stimulation starts at home. The present article establishes the importance of early stimulation in children's objectives for life, in it’s development and educational compounds, showing the five sense in wich it can be worked, and explaining the highly significant role that the parent has in integral development of the personality in the child, in it’s physical, cognitive, psychological and social areas.

  10. Sistemas expertos y su aplicación en medicina Medical expert systems

    Directory of Open Access Journals (Sweden)

    Javier E. Fox

    1991-03-01

    Full Text Available

    El presente artículo es una revisión de los Sistemas Expertos Médicos como aplicación concreta de la inteligencia Artificial. Se hace un recuento histórico de los mismos desde la década de los setenta; se dan nociones generales sobre lo que son los Sistemas Expertos, su arquitectura interna y las personas que Interactúan con ellos para hacer posibles su desarrollo y aplicación; se destacan sus ventajas y desventajas y se integran los conocimientos básicos sobre Sistemas Expertos con el prototipo PULMONOLOGIST que hace diagnóstico diferencial de quince enfermedades pulmonares y muestra al usuario el diagnóstico más probable, los síntomas que dejó de exhibir el paciente, las pruebas confirmatorias realizadas y el tratamiento recomendado.

    A review on medical diagnostic systems based on computer programs (Medical Expert Systems-MES as an application of artificial intelligence is presented. It includes a historical account, general notions, internal architecture of Expert Systems, subjects who interact with them during their development and application, as well as advantages and disadvantages. PULMONOLOGIST, a MES for differential diagnosis of pulmonary diseases, is presented as an example of the potential of this technology.

  11. Las ventajas de estar presente: desarrollando una conciencia plena para reducir el malestar psicológico

    OpenAIRE

    Andrés Martín-Asuero; Gloria García de la Banda

    2007-01-01

    Este estudio cuasi-experimental examina la eficacia de una intervención psicoeducativa, basada en el desarrollo de la conciencia plena, para reducir el malestar psicológico asociado al estrés. La muestra se compone de 28 voluntarios, en su mayoría profesionales de la salud, que experimentaban un grado de malestar superior a la media de la población española, medido según el inventario SCL-90-R. La intervención duró ocho semanas, empleando un total de 28 horas lectivas y siguiendo la técnica d...

  12. Ventajas de la implementación de la práctica de gobierno corporativo en las empresas

    Directory of Open Access Journals (Sweden)

    Dilia Castillo

    2007-10-01

    Full Text Available El objetivo primordial de una empresa es maximizar la riqueza corporativa. Lapráctica de Gobierno Corporativo (Corporate Governance de una organización protege los intereses de sus diversos grupos. Ésta es tarea directiva de la sentidades públicas o privadas, para asegurar la aplicación de los principios empresariales como equidad, justicia, economía, verdad, honestidad, eficacia,y responsabilidad tanto para clientes externos como internos. De igual modo, garantiza la reproducción de una información fidedigna y transparente, orientada por la Dirección, la cual estará pendiente de revisar y guiar la estrategia de la compañías, sus planes de acción, las políticas de contratación, los objetivos de desempeño, incluyendo el servicio posventa al cliente y la planeación. Así mismo, está pendiente de que la información publicitaria y de promoción sean realmente las que se estén ejecutando y cumpliendo, para garantizar que todos los esfuerzos sean transmitidos al consumidor final como valor agregado que asegura su fidelidad a la empresa.

  13. Ventajas y desventajas que trajo consigo la reforma tributaria ley 1607 de 2012 para las personas naturales declarantes en Colombia

    OpenAIRE

    Ramírez Ortiz, Ana Milena

    2015-01-01

    Artículo de Reflexión para optar el título de (Contador Público).-- Universidad de San Buenaventura, Facultad de Ciencias Administrativas y Contables, Programa de Contaduría Pública, 2015 Cada país tiene su estructura tributaria, la cual determina quiénes pagan o no impuestos; el motivo, la cantidad, etc. Cada reforma representa cambios que en ocasiones pueden ser muy significativos como ha sucedido con la actual. La reforma tributaria2012 según el gobierno, tiene un propósito trascendenta...

  14. La Imagen Corporativa: Creación de ventajas competitivas a través de estrategias sociales

    Directory of Open Access Journals (Sweden)

    María Isabel Corvera Valenzuela

    2016-02-01

    Full Text Available El trabajo muestra la importancia de la imagen corporativa como elemento de la comunicación de la empresa hacia el mercado y la sociedad. Se destacan diferentes estrategias que las empresas emplean para proyectar su imagen hacia el exterior de la misma.

  15. Las ventajas de estar presente: desarrollando una conciencia plena para reducir el malestar psicológico

    Directory of Open Access Journals (Sweden)

    Andrés Martín-Asuero

    2007-01-01

    Full Text Available Este estudio cuasi-experimental examina la eficacia de una intervención psicoeducativa, basada en el desarrollo de la conciencia plena, para reducir el malestar psicológico asociado al estrés. La muestra se compone de 28 voluntarios, en su mayoría profesionales de la salud, que experimentaban un grado de malestar superior a la media de la población española, medido según el inventario SCL-90-R. La intervención duró ocho semanas, empleando un total de 28 horas lectivas y siguiendo la técnica denominada Reducción de estrés basado en la Conciencia Plena (Mindfulness-Based Stress Reduction o MBSR. Los resultados muestran una disminución del malestar medio del 51%, descendiendo del percentil 84 al 48. Los mayores cambios se encontraron en los siguientes componentes del malestar, por orden de magnitud: depresión, hostilidad, somatización y ansiedad. Dichos componentes muestran reducciones de más del 50%, que suponen disminuciones en 29 o más puntos percentiles. Estos resultados indican que MBSR puede ser una intervención aplicable para reducir el malestar psicológico en programas de formación para profesionales de la salud.

  16. Gestión empresarial orientada al valor del cliente como fuente de ventaja competitiva. Propuesta de un modelo explicativo

    Directory of Open Access Journals (Sweden)

    LESLIER VALENZUELA

    2008-01-01

    fi ables que han sido aplicados al sector turístico, específi camente, a las agencias de viajes en España. Los resultados revelan que existe una relación positiva y signifi cativa entre el grado de orientación al valor del cliente y las mejores decisiones estratégicas de marketing. Finalmente, el estudio presenta las conclusiones e implicaciones que estos resultados pudieran tener para la gestión empresarial.

  17. La importancia de la reputatión empresarial en la obtención de ventajas competitivas as sostenibles

    OpenAIRE

    Martín de Castro, Gregorio; Navas López, José Emilio

    2006-01-01

    The increasing attention of the corporate reputation on the part of the professional and academic world denotes its importance in obtaining sustained competitive advantages, and consequently, in the creation of value. In the present article we will try to argue the strategic character of the corporate reputation from the Resource-Based View.

  18. Amenazas y ventajas de la enseñanza de la Historia del Pensamiento Económico hoy

    Directory of Open Access Journals (Sweden)

    Andrés Álvarez Gallo

    2010-12-01

    Full Text Available This article intends to rebut the arguments against teaching and research in the history of economic thought, thus, highlighting its relevance in the academic formation of future economists. In a moment where economics has been questioned for its inability to provide answers and for its fascination with measurement and technique, we believe it is time to advocate and promote history of economic thought as a field of reflection, criticism and introspection. A field that shows future economists that economics is a process and not a product, providing them with the necessary insights to participate actively in the “extended present” of their discipline.

  19. Capital intelectual y otros determinantes de la ventaja competitiva en empresas exportadoras de la zona norte de Honduras

    OpenAIRE

    Calix, Carlos Geovany; Vigier, Hernán P.; Briozzo, Anahí E.

    2015-01-01

    The objective of this research is to analyze the intellectual capital and other determinants of competitive advantage in exporting companies in northern Honduras, from two perspectives: the theory of resources and capabilities, and the theory of the firm based on the knowledge. At the end of the hypothesis test data were used by probit regression. The evidence found indicates that having more intellectual capital, the seniority of the exporting company, the size and degree of requirement of t...

  20. Ventajas de la cicatrización cutánea asistida por láser (LASH

    Directory of Open Access Journals (Sweden)

    S. Mordon

    Full Text Available La fase final de toda cirugía es la sutura y su cicatriz correspondiente y, frecuentemente, ésta es la única secuela visible de una intervención. La técnica LASH (cicatrización cutánea asistida por láser, estimula los mecanismos de reparación de la piel por efecto térmico, condicionando la calidad de la cicatrización. Estudios experimentales en ratones comparando los resultados obtenidos en heridas quirúrgicas radiadas con laser diodo 810 nm tras ser suturadas, con los obtenidos en igual tipo de heridas suturadas de manera convencional, han demostrado que se consiguen cicatrices mucho menos visibles cuando se practica el tratamiento con láser. La histología confirma, comparativamente, una notable aceleración del proceso cicatricial con modificación del TGFβ (Transforming Growth Factor-Beta directamente implicado en la reparación tisular, en los animales en los que la sutura fue asistida por láser. Igualmente, el análisis tensiométrico demostró mayor resistencia a la acción de estiramiento mecánico en estas heridas. Estudios clínicos en pacientes sometidos a dermolipectomia, reducción mamaria y estiramiento facial, demuestran que al tratar con LASH una parte o una de las líneas de sutura, los análisis realizados tanto por los pacientes como por cirujanos independientes a los 8 días, 3 meses y un año, evidencian resultados más favorables para la técnica láser, Las dosis eficaces determinadas para las fluencias láser están entre 80 y 120 J/cm². La técnica LASH es simple de efectuar, reproducible, rápida y ofrece una clara evidencia de que es posible reducir considerablemente la cicatriz, logrando que ésta sea de mejor calidad y más estética.

  1. Hiperacumulación de metales : ¿una ventaja para la planta y para el hombre?

    OpenAIRE

    Llugany i Ollé, Mercè

    2007-01-01

    La hiperacumulación es la capacidad que tienen algunas plantas para concentrar metales en sus tejidos a niveles muy por encima de los normales sin presentar síntomas de toxicidad. Estas plantas hiperacumuladoras han desarrollado mecanismos internos de tolerancia a la toxicidad por metales. Esta peculiaridad las hace útiles para el hombre como herramienta en las nuevas tecnologías de fitoremediación. Sin embargo, ¿cual es el beneficio de esta hiperacumulación de metales para la propia planta? ...

  2. Hiperacumulación de metales: ¿una ventaja para la planta y para el hombre?

    OpenAIRE

    Llugany Ollé, Mercè; Tolrà Pérez, Roser; Poschenrieder Wiens, Charlotte; Barceló Coll, Joan

    2007-01-01

    La hiperacumulación es la capacidad que tienen algunas plantas para concentrar metales en sus tejidos a niveles muy por encima de los normales sin presentar síntomas de toxicidad. Estas plantas hiperacumuladoras han desarrollado mecanismos internos de tolerancia a la toxicidad por metales. Esta peculiaridad las hace útiles para el hombre como herramienta en las nuevas tecnologías de fitoremediación. Sin embargo, ¿cual es el beneficio de esta hiperacumulación de metales para la pro...

  3. Hiperacumulación de metales: ¿una ventaja para la planta y para el hombre?

    OpenAIRE

    M. Llugany; R. Tolrà; C. Poschnrieder; J. Barceló

    2007-01-01

    La hiperacumulación es la capacidad que tienen algunasplantas para concentrar metales en sus tejidos a niveles muy por encima de los normales sin presentar síntomas de toxicidad. Estas plantas hiperacumuladoras han desarrollado mecanismos internos de tolerancia a la toxicidad por metales. Esta peculiaridad las hace útiles para el hombre como herramienta en las nuevas tecnologías de fitoremediación. Sin embargo, ¿cual es el beneficio de esta hiperacumulación de metales para la propia planta? S...

  4. Materiales piezoeléctricos: formas de presentación ventajas y desventajas en las aplicaciones

    OpenAIRE

    Jiménez, B.

    1995-01-01

    El enorme desarrollo que han experimentado las aplicaciones de los materiales piezoeléctricos en las nuevas tecnologías se ha debido, fundamentalmente, al descubrimiento de las propiedades ferroeléctricas en los materiales con estructura tipo perovskita de composiciones basadas en el Titanato de Plomo. La posibilidad de preparar soluciones sólidas en forma cerámica y más recientemente el polímero PVDF y los materiales compuestos por una fase activa piezoeléctrica y otra fase no activa , "comp...

  5. Energy management system. Opti-dmaX Control; Sistema de administracion de energia. Control Opti-dmaX

    Energy Technology Data Exchange (ETDEWEB)

    Automatizacion, Productividad y Calidad S.A. de C.V. Puebla (Mexico)

    2005-07-01

    The electrical energy is an essential element in the activities of the present world. Optimizing its consumption represents a competitive advantage for the companies, since the operation costs would be reduced as well as the negative impact to the environment. In billing the electrical energy the tariffs consider: the consumption, the demand, the power and the schedule of use for the medium and large companies. With the Opti-dmaX system the necessary information for the correct administration of the electrical energy consumption is obtained from the measurement in the strategic points of the installation. At the same time, the processes and services are controlled, maintaining an efficient power operation that diminishes operative costs. [Spanish] La energia electrica es un elemento indispensable en las actividades del mundo actual, y optimizar su consumo, representa una ventaja competitiva para las empresas, ya que se consigue reducir los costos de operacion y el impacto al ambiente. En la facturacion de la energia electrica las tarifas consideran: el consumo, la demanda, la potencia y el horario de uso para las medianas y grandes empresas. Con el sistema Opti-dmaX se obtiene la informacion necesaria para la correcta administracion del consumo de energia electrica a partir de la medicion en los puntos estrategicos de la instalacion. A su vez, se controlan los procesos y servicios, manteniendo una operacion energetica eficiente que minimiza los costos operativos.

  6. Information systems for civil engineering; Sistemas de informacion para ingenieria civil

    Energy Technology Data Exchange (ETDEWEB)

    De Buen R, Pablo R; Alvarado G, Alonso; Alaniz Q, Felipe de J; Guerrero F, Vicente A. [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2004-07-01

    Since its beginnings, in the Gerencia de Ingenieria Civil (GIC) of the Instituto de Investigaciones Electricas (IIE) the interest has existed to take advantage of and to promote the advantages that the appropriate use of the computerizing systems in the different tasks of civil engineering in the power sector represent. Either as a part of its infrastructure or at the request of their clients, at the GIC have been developed calculation systems for the analysis and design of special structures such as turbo-generators foundations, poles for transmission and distribution and transmission towers, in addition the information systems for the consultation and the analysis of diverse information, such as the related to the Manuals of Civil Works of the Comision Federal de Electricidad (CFE) or the relative to the existing instruments in the large dams of our country. In this article are briefly described some of the computer systems developed by the GIC in recent years. [Spanish] Desde sus inicios, en la Gerencia de Ingenieria Civil (GIC) del Instituto de Investigaciones Electricas (IIE) ha existido el interes por aprovechar y promover las ventajas que representa el uso adecuado de los sistemas de computo en las diferentes tareas de ingenieria civil en el sector energetico. Ya sea como parte de su infraestructura o a solicitud de sus clientes, en la GIC se han desarrollado sistemas de calculo para el analisis y diseno de estructuras especiales como lo son las cimentaciones de turbogeneradores, los postes para transmision y distribucion y las torres de transmision, ademas de sistemas de informacion para la consulta y el analisis de informacion diversa, como es la relacionada con los manuales de obras civiles de la Comision Federal de Electricidad (CFE) o a la relativa a los instrumentos existentes en las grandes presas de nuestro pais. En este articulo se describen brevemente algunos de los sistemas de computo desarrollos por la GIC en anos recientes.

  7. System Budgets

    DEFF Research Database (Denmark)

    Jeppesen, Palle

    1996-01-01

    The lecture note is aimed at introducing system budgets for optical communication systems. It treats optical fiber communication systems (six generations), system design, bandwidth effects, other system impairments and optical amplifiers.......The lecture note is aimed at introducing system budgets for optical communication systems. It treats optical fiber communication systems (six generations), system design, bandwidth effects, other system impairments and optical amplifiers....

  8. DIREPI: Sistema para el cálculo a resistencia de recipientes sometidos a presión interna // DIREPI: System for the resistance calculation of recipients with internal pressure

    Directory of Open Access Journals (Sweden)

    L. S. Flores Bernal

    1999-07-01

    Full Text Available El trabajo muestra la confección de un software para el cálculo a resistencia de recipientes sometidos a presión interna y construidosde acero, aborda también las ventajas que reporta el tener automatizado la metodología de trabajo por la calidad de los resultadosfinales que se obtienen y la fiabilidad de los mismos, el sistema posee una salida gráfica por AutoCAD que permite obtener losplanos de taller de los componentes de los recipientes diseñados.Palabras claves: CADD, CAD, diseño, cálculo de recipientes._________________________________________________________________________________AbstractThe work shows the making of a software for the calculation to resistance of steel recipients with internal pressure, it also approachesthe advantages that reports having automated the work methodology, the system has a graphic result for AutoCAD that allows toobtain the blueprinters of the components of the designed recipients.Key words: CADD, AutoCAD, design, calculation of recipients.

  9. The efficient use of the electric energy in underground water pumping systems in the Bajio (lowlands); El uso eficiente de la energia electrica en los sistemas de bombeo de agua subterranea en el Bajio

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, E. [Irapuato (Mexico)

    1997-12-31

    In the Bajio region the underground water is the main source of drinking water and approximately constitutes 50% of the water used for agricultural purposes. From the energy standpoint pumping represents 33% of the electricity consumption and a wastage of 35% is estimated. In order to take care of this problem a methodology was designed for an energetic appraisal of the well pumping systems, with the basic objective of knowing the electro-mechanical efficiency of the equipment and the efficiency of the auxiliary equipment and the well hydraulic response. The analysis of the results of 221 diagnoses performed demonstrates the profitability of the equipment rehabilitation, plus other advantages of collective character . [Espanol] En la region del Bajio, el agua subterranea constituye la principal fuente de agua potable y aproximadamente, el 50% del agua para riego agricola; desde el punto de vista energetico, el bombeo de ella representa el 33% de la electricidad que se consume y se estima un desperdicio del 35%. Para atender la problematica, se diseno una metodologia para un diagnostico energetico de los sistemas de bombeo de los pozos, con el objetivo basico de conocer la eficiencia electro-mecanica de los equipos, el comportamiento de los equipos auxiliares y la capacidad de respuesta hidraulica del pozo. El analisis de los resultados de 221 diagnosticos realizados, pone de manifiesto la redituabilidad de la rehabilitacion de los equipos, ademas de otras ventajas de caracter colectivo.

  10. Coeficiente de corrección en engranajes cilíndricos como factor de conversión entre sistemas AGMA e ISO. // Addendum modification coefficient as conversion factor of cylindrical gears in AGMA system to ISO standards.

    Directory of Open Access Journals (Sweden)

    G. González Rey

    2007-09-01

    Full Text Available A partir de la experiencia de los autores, en trabajos asociados con el análisis para la reconversión de engranajes ensistemas AGMA a partir de herramientas con referencia a normas ISO, en el artículo se pretende exponer las principalesdefiniciones y recomendaciones asociadas al coeficiente de corrección relativo al módulo en engranajes cilíndricos de ejesparalelos con dientes de flanco de evolvente que permitan un racional cálculo de la geometría del engranaje y apreciarmediante ejemplos la ventaja del coeficiente de corrección en la solución de problemas prácticos de conversión deengranajes en sistemas AGMA a ISO.Palabras claves: geometría de engranaje cilíndrico, coeficiente de corrección, conversión AGMA a ISO________________________________________________________________________________AbstractDefinitions and recommendations associated to the addendum modification coefficient are presented. Examples, based onauthor’s experiences in the analysis, recovery and conversion of helical and spur gears in AGMA system to ISO standards showthe advantage of application of the addendum modification coefficient in the solution of practical problems and rationalcalculation of gears.Key words: external parallel-axis cylindrical involute gears, gear geometry, , ISO gear standards, rack shift coefficient x

  11. Ventilation systems

    International Nuclear Information System (INIS)

    Gossler

    1980-01-01

    The present paper deals with - controlled area ventilation systems - ventilation systems for switchgear-building and control-room - other ventilation systems for safety equipments - service systems for ventilation systems. (orig./RW)

  12. Diseño de Hardware y Software de Systems on Chip empleando tecnología Xilinx EDK

    Directory of Open Access Journals (Sweden)

    Julio Cadena

    2012-11-01

    Full Text Available El presente artículo resume el proceso empleado para obtener el primer System on Chip (SoC diseñado, desarrollado, y emulado en la Escuela Politécnica del Ejército (ESPE y en el Ecuador. Se demostrará que combinando las ventajas del diseño sobre Field Programable Gate Arrays (FPGAs empleando la reutilización de IP Cores y plataformas, junto al uso de la tecnología de desarrollo Xilinx EDK, se puede diseñar tanto el hardware como el software de un chip de manera rápida y económicamente fiable. Además, se detalla el uso de la metodología Platform Based Design (PBD y del concepto de co-diseño de hardware y software para diseñar las capas de hardware, sistema operativo y aplicación de un chip. La capa de hardware contiene una serie de IP Cores gobernados por un procesador MicroBlaze trabajando dentro de la arquitectura CoreConnect de IBM. Mientras que la capa de sistema operativo está conformada por drivers, librerías y el Sistema Operativo en Tiempo Real (RTOS Xilkernel. Por último, la capa de aplicación tiene la funcionalidad de controlar una planta de temperatura, mediante la selección de dos técnicas de control: ON-OFF o PID. Cabe destacar que el co-diseño se desarrolló considerando un adecuado enfoque conceptual, arquitectural, y metodológico1.

  13. Los sistemas de control de la fuerza de ventas (the sales force control systems

    Directory of Open Access Journals (Sweden)

    María de Miguel Molina

    2012-04-01

    Full Text Available El objetivo de este análisis es estudiar qué sistemas son utilizados para controlar a la fuerza de ventas y cuáles son más adecuados, si aquellos basados en el resultado o los basados en el comportamiento. Los directores de ventas deben combinar una cantidad elevada de diferentes elementos de control que podrán afectar al comportamiento de los vendedores de forma diferente. La combinación individual en un sistema integrado de supervisión es un ejercicio de gran complejidad que debe indicar a los vendedores cómo se supone que deben realizar su trabajo (Oliver y Anderson, 1994. La selección de herramientas y procesos depende de los objetivos que se quieran conseguir. Para analizar las ventajas e inconvenientes de cada uno de estos sistemas se ha realizado una revisión de la literatura. Tras este análisis se deduce que lo más aconsejable, en el caso de la fuerza de ventas, es utilizar un sistema híbrido. En un trabajo posterior, se podrían identificar las variables más adecuadas en función de los objetivos que quiera lograr cada empresa, lo que en concreto puede ser de gran utilidad para las pymes que carecen de sistemas de control. Su aplicación podrá permitir valorar la eficacia de las variables seleccionadas.(The objective of this paper is to analyze the suitability of the systems used to control the sales force: those that use the results as a reference and those that take into account aspects related to the behavior of sellers, to determine if they meet the objectives established by the company. It is therefore a complex issue that should guide the vendors in terms of how they are supposed to do their work (Oliver and Anderson, 1994. The literature review indicates that in most cases, hybrid systems are used with a predominance of one or another component, depending on the type of company, product and purpose. This study aims to facilitate the managers how to identify the variables that best suit the goals each company wants

  14. Thermal systems; Systemes thermiques

    Energy Technology Data Exchange (ETDEWEB)

    Lalot, S. [Valenciennes Univ. et du Hainaut Cambresis, LME, 59 (France); Lecoeuche, S. [Ecole des Mines de Douai, Dept. GIP, 59 - Douai (France)]|[Lille Univ. des Sciences et Technologies, 59 - Villeneuve d' Ascq (France); Ahmad, M.; Sallee, H.; Quenard, D. [CSTB, 38 - Saint Martin d' Heres (France); Bontemps, A. [Universite Joseph Fourier, LEGI/GRETh, 38 - Grenoble (France); Gascoin, N.; Gillard, P.; Bernard, S. [Laboratoire d' Energetique, Explosion, Structure, 18 - Bourges (France); Gascoin, N.; Toure, Y. [Laboratoire Vision et Robotique, 18 - Bourges (France); Daniau, E.; Bouchez, M. [MBDA, 18 - Bourges (France); Dobrovicescu, A.; Stanciu, D. [Bucarest Univ. Polytechnique, Faculte de Genie Mecanique (Romania); Stoian, M. [Reims Univ. Champagne Ardenne, Faculte des Sciences, UTAP/LTM, 51 (France); Bruch, A.; Fourmigue, J.F.; Colasson, S. [CEA Grenoble, Lab. Greth, 38 (France); Bontemps, A. [Universite Joseph Fourier, LEGI/GRETh, 38 - Grenoble (France); Voicu, I.; Mare, T.; Miriel, J. [Institut National des Sciences Appliquees (INSA), LGCGM, IUT, 35 - Rennes (France); Galanis, N. [Sherbrooke Univ., Genie Mecanique, QC (Canada); Nemer, M.; Clodic, D. [Ecole des Mines de Paris, Centre Energetique et Procedes, 75 (France); Lasbet, Y.; Auvity, B.; Castelain, C.; Peerhossaini, H. [Nantes Univ., Ecole Polytechnique, Lab. de Thermocinetiquede Nantes, UMR-CNRS 6607, 44 (France)

    2005-07-01

    This session about thermal systems gathers 26 articles dealing with: neural model of a compact heat exchanger; experimental study and numerical simulation of the thermal behaviour of test-cells with walls made of a combination of phase change materials and super-insulating materials; hydraulic and thermal modeling of a supercritical fluid with pyrolysis inside a heated channel: pre-dimensioning of an experimental study; energy analysis of the heat recovery devices of a cryogenic system; numerical simulation of the thermo-hydraulic behaviour of a supercritical CO{sub 2} flow inside a vertical tube; mixed convection inside dual-tube exchangers; development of a nodal approach with homogenization for the simulation of the brazing cycle of a heat exchanger; chaotic exchanger for the cooling of low temperature fuel cells; structural optimization of the internal fins of a cylindrical generator; a new experimental approach for the study of the local boiling inside the channels of exchangers with plates and fins; experimental study of the flow regimes of boiling hydrocarbons on a bundle of staggered tubes; energy study of heat recovery exchangers used in Claude-type refrigerating systems; general model of Carnot engine submitted to various operating constraints; the free pistons Stirling cogeneration system; natural gas supplied cogeneration system with polymer membrane fuel cell; influence of the CRN coating on the heat flux inside the tool during the wood unrolling process; transport and mixture of a passive scalar injected inside the wake of a Ahmed body; control of a laser welding-brazing process by infrared thermography; 2D self-adaptative method for contours detection: application to the images of an aniso-thermal jet; exergy and exergy-economical study of an 'Ericsson' engine-based micro-cogeneration system; simplified air-conditioning of telephone switching equipments; parametric study of the 'low-energy' individual dwelling; brief synthesis of

  15. Data Systems vs. Information Systems

    OpenAIRE

    Amatayakul, Margret K.

    1982-01-01

    This paper examines the current status of “hospital information systems” with respect to the distinction between data systems and information systems. It is proposed that the systems currently existing are incomplete data dystems resulting in ineffective information systems.

  16. EXPERT SYSTEMS

    OpenAIRE

    Georgiana Marin; Mihai Catalin Andrei

    2011-01-01

    In recent decades IT and computer systems have evolved rapidly in economic informatics field. The goal is to create user friendly information systems that respond promptly and accurately to requests. Informatics systems evolved into decision assisted systems, and such systems are converted, based on gained experience, in expert systems for creative problem solving that an organization is facing. Expert systems are aimed at rebuilding human reasoning on the expertise obtained from experts, sto...

  17. Multibody Systems

    DEFF Research Database (Denmark)

    Wagner, Falko Jens

    1999-01-01

    Multibody Systems is one area, in which methods for solving DAEs are of special interst. This chapter is about multibody systems, why they result in DAE systems and what kind of problems that can arise when dealing with multibody systems and formulating their corresponding DAE system....

  18. Closure system

    International Nuclear Information System (INIS)

    Kube, L.J.

    1978-01-01

    This invention relates generally to gas-cooled nuclear reactor systems and, more particularly, to an improved closure system for a pressure vessel in such a system wherein a penetration is provided for accommodating a heat exchanger. (author)

  19. Lymph system

    Science.gov (United States)

    Lymphatic system ... neck, under the arms, and groin. The lymph system includes the: Tonsils Adenoids Spleen Thymus ... JE, Flynn JA, Solomon BS, Stewart RW. Lymphatic system. In: Ball JW, Dains JE, Flynn JA, Solomon ...

  20. INIS system

    International Nuclear Information System (INIS)

    Sokalski, A.

    1982-01-01

    History, organizational structure and operation principles of INIS system are presented. The preparation of input, checking and data processing as well as output production, computer forms of files and information retrieval systems are described in detail. The active participation of Poland in the system is emphasized. The possible ways of system development are presented. (author)

  1. Systems effectiveness

    CERN Document Server

    Habayeb, A R

    1987-01-01

    Highlights three principal applications of system effectiveness: hardware system evaluation, organizational development and evaluation, and conflict analysis. The text emphasizes the commonality of the system effectiveness discipline. The first part of the work presents a framework for system effectiveness, partitioning and hierarchy of hardware systems. The second part covers the structure, hierarchy, states, functions and activities of organizations. Contains an extended Appendix on mathematical concepts and also several project suggestions.

  2. Reactive Systems

    DEFF Research Database (Denmark)

    Aceto, Luca; Ingolfsdottir, Anna; Larsen, Kim Guldstrand

    A reactive system comprises networks of computing components, achieving their goals through interaction among themselves and their environment. Thus even relatively small systems may exhibit unexpectedly complex behaviours. As moreover reactive systems are often used in safety critical systems......, the need for mathematically based formal methodology is increasingly important. There are many books that look at particular methodologies for such systems. This book offers a more balanced introduction for graduate students and describes the various approaches, their strengths and weaknesses, and when...

  3. Advantages of a program of quality control in the nuclear medicine equipment; Ventajas de un programa de control de calidad en los equipos de medicina nuclear

    Energy Technology Data Exchange (ETDEWEB)

    Trujillo Z, F.E.; Argumosa, E. [Departamento de Medicina Nuclear del Instituto Nacional de Cancerologia, Tlalpan, Mexico D.F. (Mexico); Herrera R, M.R. [Hospital Infantil de Mexico ' Federico Gomez' , Mexico D.F. (Mexico)

    2007-07-01

    In Nuclear Medicine more 90% of the entirety of the carried out procedures its are with diagnostic ends where it is acquired one or several images. This makes indispensable to have an appropriate operation of the dedicated equipment to produce images and also of those non former images, as the activity caliper, to assure an appropriate quality diagnoses not from the images and the correct dose administration to the patient. In this work the main calibrations that should be carried out and an example of the program of quality control of a gamma camera mark Siemens and model E.CAM are presented. Considerations that should take as for the radiological protection are exposed. Comments on the parameters that correct the required calibrations and the images taken place by an operation or inadequate calibrations are included. In conclusion, the necessity of a program that it contains as minimum the quality control of the gamma cameras and of the activity caliper, having as main advantages a good image quality diagnoses and to minimize the dose imparted the patient are exposed. (Author)

  4. 30 años de España en la Unión Europea: principales ventajas e inconvenientes.

    OpenAIRE

    Martín Díaz, Cristina

    2017-01-01

    En 2016 España cumplió 30 años desde su adhesión a la UE. Durante este periodo nuestro país ha vivido uno de las peores etapas económicas desde su historia moderna: La crisis financiera de 2008. Esta etapa hizo que numerosos economistas y ciudadanos españoles cuestionasen los beneficios de formar parte de la UE, creando un ambiente de pesimismo hacia Europa que aún persiste, a pesar de los pequeños progresos económicos que se es...

  5. Ventajas de la gammaglobulina endovenosa en el síndrome de Guillain-Barré en el niño

    Directory of Open Access Journals (Sweden)

    Lourdes Valdés Urrutia

    2002-12-01

    Full Text Available Veintidós niños con síndrome de Guillain-Barré (SGB se examinaron y evaluaron posteriormente, en su evolución clínica acorde con el tratamiento. Predominó el sexo masculino (59,1 %. La edad promedio fue de 7 años. Estos pacientes mostraron infección previa, y fueron las más frecuentes las infecciones respiratorias agudas. La proteinorraquia se observó en 21 pacientes (95,2 %. Un grupo recibió esteroides (grupo A con 8 pacientes y otro grupo, inmunoglobulina cubana endovenosa (grupo B con 14 enfermos. La mejoría clínica y la condición para la deambulación, conocida como la capacidad para caminar independientemente se evaluó en ambos grupos. Los pacientes del grupo A mostraron un promedio de mejoría de 17,3 días y un promedio máximo para obtener la condición ambulatoria de 57,1 días. Por otra parte, el grupo B inició la mejoría con un promedio de 8,3 días y el tiempo para la condición ambulatoria fue de 25,42 días. El análisis estadístico en el estudio fue altamente significativo (p=,0002.Twenty two children suffering from Guillain-Barré´s syndrome (GBS were examined and further evaluated in their clinical course according to the treatment. Males prevailed (59.1%. Average age was 7 years. These children had previous infections, being acute respiratory infections the most frequent. Proteinrachia was observed in 21 patients (95,2%. One group (group A with 8 patients was given steroids and the other group (group B with 14 patients was intravenously administered Cuban immunoglobulin. The clinical improvement and the independent walking ability of the patients were evaluated in both groups. The patients included in group A showed clinical improvement after 17,3 days as an average and a maximum average length of 57.1 days to reach the ambulatory capacity. On the other hand, the group B started improvement at an average of 8.3 days and reached walking capacity after 25,42 days. The statistical analysis was highly significant (p=.0002.

  6. Installation of a new type of nuclear reactor in Mexico: advantages and disadvantages; Instalacion de un nuevo tipo de reactor nuclear en Mexico: ventajas y desventajas

    Energy Technology Data Exchange (ETDEWEB)

    Jurado P, M.; Martin del Campo M, C. [FI-UNAM, 04510 Mexico D.F. (Mexico)]. e-mail: mjp_green@hotmail.com

    2005-07-01

    In this work the main advantages and disadvantages of the installation of a new type of nuclear reactor different to the BWR type reactor in Mexico are presented. A revision of the advanced reactors is made that are at the moment in operation and of the advanced reactors that are in construction or one has already planned its construction in the short term. Specifically the A BWR and EPR reactors are analyzed. (Author)

  7. Ventajas e inconvenientes de la gestión de proyectos en la Pyme con sistemas de información integral

    OpenAIRE

    Rubio Alburquerque, Inmaculada

    2013-01-01

    Este proyecto fin de carrera pone de manifiesto la importancia de la gestión de proyectos en la Pyme y la necesidad de utilizar un sistema de gestión integral para llevar a cabo este proceso considerado como innovación organizativa de la empresa. Tras realizar un análisis de las características de la Pyme en relación a los niveles de innovación nos damos cuenta de que, a pesar de la importancia de la innovación en los resultados de la empresa (Triguero y Córcoles, 2013), las Pymes apenas invi...

  8. Frentes y remolinos como estructuras clave en el habitat de las larvas de peces marinos: oportunidad, respuesta adaptativa y ventaja competitiva

    OpenAIRE

    Bakun, Andrew

    2006-01-01

    Los frentes superficiales y los remolinos de mesoescala son dos tipos de estructuras de mesoescala que producen patrones significativos en los hábitats de los organismos marinos. Ambos son notables por ser lugares en los que la energía mecánica del sistema físico puede ser accesible para aumentar la energía trófica disponible para los organismos biológicos. Por consiguiente, pueden ofrecer oportunidades para que se produzcan producciones y crecimientos localmente excepcionales de especi...

  9. Enseñanza de la lengua latina : resultados preliminares sobre las ventajas e inconvenientes en el empleo de diferentes metodologías

    OpenAIRE

    de Lerma, Gala L.

    2016-01-01

    La metodología para la enseñanza y el aprendizaje de la lengua latina en el bachillerato es motivo de debate por distintos colectivos de expertos. Con el fin de aportar datos para la investigación y reflexión, diseñamos y enviamos un cuestionario a profesores y alumnos de segundo de bachillerato pertenecientes a distintas comunidades autónomas. El análisis de una parte de los datos obtenidos por la muestra de 189 docentes acerca de la metodología adoptada en el aula, su valoración, el grado d...

  10. Enseñanza de la lengua latina: resultados preliminares sobre las ventajas e inconvenientes en el empleo de diferentes metodologías.

    OpenAIRE

    López de Lerma, Gala; Ambròs, Alba

    2016-01-01

    La metodología para la enseñanza y el aprendizaje de la lengua latina en el bachillerato es motivo de debate por distintos colectivos de expertos. Con el fin de aportar datos para la investigación y reflexión, diseñamos y enviamos un cuestionario a profesores y alumnos de segundo de bachillerato pertenecientes a distintas comunidades autónomas. El análisis de una parte de los datos obtenidos por la muestra de 189 docentes acerca de la metodología adoptada en el aula, su valoración, el grado d...

  11. Análisis de las ventajas e inconvenientes del uso de tracción cutánea preoperatoria en pacientes con fractura de cadera

    OpenAIRE

    Alonso Vega, Melisa

    2014-01-01

    La fractura de cadera en pacientes ancianos es la causa más frecuente de ingreso hospitalario en los servicios de Cirugía Ortopédica y Traumatología de nuestro país. Se presenta predominantemente en personas de edad avanzada y constituye uno de los problemas más importantes de nuestra sociedad debido a su elevada incidencia, principalmente motivada por el envejecimiento de la población. Una gestión adecuada de su tratamiento es extremadamente importante pues tiene un efecto significativo sobr...

  12. La información y la asistencia en la Administración tributaria electrónica: ventajas e inconvenientes de las TIC

    Directory of Open Access Journals (Sweden)

    Irene Rovira Ferrer

    2011-10-01

    Full Text Available

    Ante la imposibilidad de practicar caso por caso los millones de liquidaciones anuales relativas a las más importantes figuras impositivas, los ciudadanos se encontraron con la responsabilidad de conocer, interpretar y aplicar el complejo, cambiante y, a veces, incluso deficiente ordenamiento tributario, por lo que debía compensarse la reducción de la actividad administrativa con una fuerte prestación de los deberes de información y asistencia a los obligados tributarios. Por ello, y teniendo en cuenta que la información y la comunicación son la base de los deberes, parece evidente que constituyen uno de los ámbitos administrativos más susceptible de ser transformado por la incorporación de las tecnologías de la información y la comunicación, de la misma forma que es posible pensar que las consecuencias que ha tenido la incorporación de los nuevos medios en su prestación han comportado un antes y un después.

  13. La contratación laboral en el sector de la construcción en Colombia: ¿ventajas para quién?

    Directory of Open Access Journals (Sweden)

    Diana Carolina González Valencia

    2017-06-01

    Full Text Available El presente artículo tiene como objetivo aportar algunas reflexiones alrededor de la contratación laboral de los empleados de la construcción en Colombia. Se empleó como metodología la revisión del marco normativo actual del régimen de contratación laboral en Colombia, específicamente para el caso de empleados de la construcción; contrastando la información con otras fuentes tales como: la Cámara Colombiana de la Construcción (Camacol, Ministerio de Trabajo y la Intergremial de la Construcción y la Madera (ICM. Se concluye que en el actual sistema de contratación para empleados de la construcción vienen dándose numerosas irregularidades en los procesos inserción laboral en el sector que aumentan la informalidad y la subcontratación; cuyas desventajas recaen tanto en el empleado al ser más frecuente la vulneración de sus derechos laborales, como en las empresas constructoras, al aumentar sus gastos tanto en la subcontratación de personal como en el pago de las posibles sanciones legales ocasionadas por los desaciertos en los procesos de contratación.

  14. Ventajas de la utilización del dimetilsulfóxido en la determinación de clorofilas y feofitinas en líquenes

    OpenAIRE

    Calatayud, A.; Sanz, M. J.; Barreno, Enrique Segundo; Valle Tascón, Secundino del

    1995-01-01

    Los pigmentos fotosintéticos de Ramalina fraxinea (L.) Ach. se extraen por trituración ó inmersión del talo con acetona (80%) y dimetilsulfóxido (DMSO). El solvente DMSO es más adecuado que la acetona (80%) para la extracción de clorofilas ya que la extracción es completa y la absorción óptica de los extractos permanece constante durante períodos de tiempos largos.

  15. LA CERTIFICACIÓN ISO 9000 EN EL SECTOR INDUSTRIAL DEL MUEBLE: EVIDENCIAS SOBRE LA CULTURA DE CALIDAD TOTAL Y LAS VENTAJAS QUE LA CARACTERIZAN

    Directory of Open Access Journals (Sweden)

    Marín Vinuesa, L.M

    2010-01-01

    Full Text Available Este estudio analiza si el nivel de implantación de prácticas de gestión de la calidad total, y el nivel de resultados empresariales, son factores que caracterizan a las empresas certificadas con la norma ISO 9000 en la industria nacional del mueble. Asimismo, se comprueba la posible relación de determinados aspectos TQM con la mejora de los resultados empresariales. Los resultados del análisis realizado sobre una muestra de empresas del citado sector muestran que las empresas certificadas con la norma ISO 9001:2000 implantan prácticas TQM en mayor medida que las empresas no certificadas, y asimismo obtienen mejores resultados de la calidad. Para todas las prácticas analizadas se evidencia la existencia de relaciones positivas con el resultado de la calidad, sin embargo, sólo algunas de ellas están directamente relacionadas con los resultados operativos y la rentabilidad de la empresa.

  16. LA CERTIFICACIÓN ISO 9000 EN EL SECTOR INDUSTRIAL DEL MUEBLE: EVIDENCIAS SOBRE LA CULTURA DE CALIDAD TOTAL Y LAS VENTAJAS QUE LA CARACTERIZAN

    OpenAIRE

    Marín Vinuesa, L.M; Gimeno Zuera, J.

    2010-01-01

    Este estudio analiza si el nivel de implantación de prácticas de gestión de la calidad total, y el nivel de resultados empresariales, son factores que caracterizan a las empresas certificadas con la norma ISO 9000 en la industria nacional del mueble. Asimismo, se comprueba la posible relación de determinados aspectos TQM con la mejora de los resultados empresariales. Los resultados del análisis realizado sobre una muestra de empresas del citado sector muestran que las empresas certificadas co...

  17. Advantages of using 3D design tools in the nuclear power plants projects; Ventajas del uso de herramientas de diseno 3D en los proyectos de centrales nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Roldan, P.; Melendro, J.; Gomez, A.; Hermana, I.

    2011-07-01

    It there is anything that distinguished Iberdrola Ingeneria y Construccion, as part of the Iberdrola Group, it is its firm commitment to innovation and continuous improvement. This is the philosophy that led the company to its interest in three-dimensional design tools back when they were in an early stage of development : very little international implementation, lack of integration with other applications, absence of previous experiences to understand the best possible configuration for each case, etc. Nevertheless, the company was able to see the tremendous advantage of having a construction program in the early months of a project- a detailed program that could predict, and therefore avoid, the problems that, if not anticipated, would arise in the construction phase when they result in higher costs, longer time frames and a multitude of complications. This is precisely what 3D design tools offer prediction and this has been proven in the latest combined cycle projects executed with these tools. A project executed without errors not only decreases cost and time overruns, but also necessarily increases the quality of the end result. Efficiency and quality: these are both basic goals of Iberdrola Ingenieria y Construccion. The knowledge of and skill in the use of these tools have grown at the same time that their development has reached increasingly higher levels. As a result, Iberdrola Ingenieria y Conctruccion now has intensive experience in the use of 3D design tools and is preprared for the future challenges posed by these tools, the capabilities of which have attained such heights that it is possible to take on one of the most technically challenging projects that exists a nuclear power plant. And we are ready. (Author)

  18. Advantages and applications of moving bed technology in urban and industrial waste waters; Ventajas y aplicaciones de la tecnologia de lecho movil en aguas residuales urbanas e industriales

    Energy Technology Data Exchange (ETDEWEB)

    Larrea Urcola, A.; Zalakain Bengoa, G.; Larrea Ucola, L.; Abad Alba, A.

    2004-07-01

    Moving bed technology is a new biological treatment by activated sludge where the biomass grows attached to a inert media (plastic) that moves free along the reactor. The main advantages of this technology are the reduction of the reactor volume, simplicity of operation and the easiest way for the upgrading of plants. Results of different industrial applications are shown together with the latest researches lines that combine organic matter and nitrogen removal. (Author) 12 refs.

  19. Ventajas de incluir la figura de candidato suplente para la elección de gobernador en el Estado de México

    Directory of Open Access Journals (Sweden)

    Enrique González de la Paz

    2016-08-01

    Full Text Available En este trabajo se describe la figura jurídica de la suplencia, que en la actualidad está reconocida en la legislación mexicana para diversos cargos de elección federal, estatal y municipal; así, los integrantes del Congreso de la Unión (senadores y diputados federales, los diputados a las legislaturas de los estados y los miembros de los ayuntamientos (presidente municipal, síndicos y regidores son designados por fórmulas y planillas formadas por propietarios y suplentes. La legislación vigente no contempla la suplencia para los titulares del Poder Ejecutivo a niveles federal y estatal; por esto, el presidente de la república y los gobernadores son elegidos de manera individual; en caso de faltas temporales o absolutas, el Congreso de la Unión o los congresos locales se constituyen en colegio electoral para designar al interino, provisional o sustituto. En el estudio se investigan las causas de la inexistencia de un suplente para el gobernador del Estado de México, a través de registros históricojurídicos sobre la evolución y el desarrollo de esta representación en las diversas leyes supremas federales y locales que han tenido vigencia; se averigua si hay prohibiciones o limitantes constitucionales para no incluir esta figura en el caso sugerido; se ilustra sobre la organización actual del Poder Ejecutivo, así como acerca de las reglas de suplencia de los titulares de dicha representación a nivel federal y en la entidad mexiquense, y se examinan casos de sustitución de presidente de la república y de gobernador y candidatos a dicho cargo en el estado que nos ocupa y otros. / This paper analyzes the legal figure of the substitute, which is currently recognized in the Mexican legislation for different federal, state and municipal election offices. Therefore, the members of the Congress of the Union (senators and federal representatives, the representatives of the States legislatures and the members of the local government (municipal president, representatives and councilors are appointed by a list of candidates that include holders and substitutes. The current legislation does not consider the substitution for the holders of the Executive Power on a federal and state level. This is why the President of the Republic and the governors are elected individually. In case of temporal or permanent absence, the Congress of the Union or the local congress become an electoral board to appoint a temporary person or to appoint the substitute. This study investigates the reasons why the figure of a substitute for the governor of the State of Mexico does not exist. This is done through historical and legal records on the evolution and development of this representation in the different supreme federal and local laws. We also researched if there is a constitutional prohibition or limitation so that this figure is not included in this case. The current organization of the Executive Power is presented as well as the substitution regulations for the holders of this Power on a federal level and in the State of Mexico. Different cases of substitution of the President of the Republic are analyzed as well as other cases of governor and candidates to this office in the same State.

  20. APLICACIONES, VENTAJAS Y LIMITACIONES DEL MODELAJE DEL NICHO ECOLÓGICO PARA EL MANEJO Y CONSERVACIÓN DE GRUPOS CON DIFERENTES HISTORIAS DE VIDA

    OpenAIRE

    Ortega Rodríguez, Juan Manuel

    2012-01-01

    En este trabajo se exploraron tres aplicaciones de la modelación espacial del nicho ecológico. En primera instancia, se hace un análisis de las características geográficas de los sitios de anidación del loro corona lila, en una aplicación en la que no se usan algoritmos sofisticados para modelar, sino una metodología más tradicional, dentro del ambiente de los sistemas de información geográfica, pero que nos permitió contribuir al entendimiento de las preferencias de anidación de ...

  1. La ventaja epidemiológica de la orientación preferencial del control de la tuberculosis hacia los pobres

    Directory of Open Access Journals (Sweden)

    J. R. Andrews

    2015-09-01

    Full Text Available La tuberculosis (TB continúa concentrada de manera desproporcionada entre los pobres, pero los determinantes conocidos de reactivación de la TB pueden no explicar las desigualdades observadas en las tasas de enfermedad según la riqueza. En el presente estudio, mediante la revisión de datos sobre desigualdades en TB en la India y la distribución de factores de riesgo de TB conocidos según riqueza, se describe cómo los patrones de mezcla social pueden estar contribuyendo a las desigualdades en TB. La mezcla social por afinidad selectiva según la riqueza, por la cual es más probable que las personas entren en contacto con otras personas de orígenes socioeconómicos similares, amplifica las pequeñas diferencias en el riesgo de TB y genera grandes desigualdades a nivel poblacional. A medida que las desigualdades y la asortatividad (o afinidad selectiva aumentan, se hace más difícil controlar la TB; este efecto queda enmascarado cuando se examinan solamente promedios poblacionales de parámetros epidemiológicos, tales como las tasas de detección de casos. El estudio ilustra cómo los esfuerzos de control de TB pueden beneficiarse a partir de una orientación preferencial hacia los pobres. En la India, una intervención a escala equivalente podría tener un impacto sustancialmente mayor si se orientara a quienes viven por debajo de la línea de pobreza que el de una estrategia a toda la población. Además de las eficiencias potenciales de focalizar en poblaciones en más alto riesgo, los esfuerzos de control de la TB podrían llevar a una mayor reducción en el número de casos secundarios de TB por cada caso primario diagnosticado si es que tales esfuerzos fuesen preferencialmente orientados hacia los pobres. El estudio destaca la necesidad de recolectar datos programáticos sobre las desigualdades en TB e incorporar de manera explícita consideraciones de equidad en los planes de control de la TB.

  2. PCR-RFLP de las regiones ITS-5.8S como herramienta de identificación de levaduras: ventajas y desventajas

    Directory of Open Access Journals (Sweden)

    Luis E. Segura G.

    2010-01-01

    Full Text Available Las levaduras juegan un papel muy importante en los procesos de fermentación de bebidas yalimentos, por lo que es necesario identificarlas. A finales de los años 90 se propuso la técnica de análisis delpolimorfismo en la longitud de los fragmentos de restricción (RFLP de las regiones ITS-5.8S como una herramienta rápida y confiable para identificarlas. En este trabajo se analizaron 104 cepas de Saccharomyces cerevisiae de la colección de CIATEJ. Además se analizaron los patrones de bandas publicados hasta el momento para levaduras, lo que nos permitió establecer el parámetro de error de dicha técnica. A partir de este análisis se comprobó que esta técnica es rápida y confiable en la gran mayoría de los casos, sin embargo para algunas especies de levaduras existen ambigüedades en los patrones publicados o no permite diferenciar especies cercanas.

  3. Propuesta de estrategia de costos logísticos como ventaja competitiva de una empresa importadora de productos de tecnología.

    OpenAIRE

    Ceballos Millán, Mónica Lilia.

    2015-01-01

    El presente estudio expone un modelo de reducción de costos logísticos y tiempos de entrega de una empresa importadora de productos de tecnología. El modelo parte de la detección de los factores que impactan los costos logísticos y que afectan en la competitividad de la empresa importadora. Para su construcción se realizó una investigación durante un periodo de un año, donde se definieron antecedentes de los costos logísticos tanto en el ámbito nacional e internacional, la afec...

  4. Las ventajas y desventajas que el vínculo multiempresa y la red de cooperación empresarial internacional presentan para la PYME.

    Directory of Open Access Journals (Sweden)

    González Alvarado, Tania Elena

    2008-06-01

    Full Text Available The aim of this article is to show the advantages and disadvantages that multi-enterprise tie and networks of enterprise cooperation offer to small and medium-sized enterprises (SMEs. Multi-enterprise tie may contribute to SMEs’ participate in international markets and to contribute to local development. In this article five enterprise cases are analyzed. Each case demonstrated the advantage and disadvantages of multi-enterprise tie and the way that SMEs took advantage of them.

  5. Fisura velopalatina con intervención quirúrgica temprana y atención logopédica precoz : ventajas para el desarrollo del lenguaje infantil

    OpenAIRE

    Díaz de Tudanca Muñoz, Raquel

    1994-01-01

    La fisura velopalatina es una de la diez malformaciones congénitas de mayor frecuencia en el recién nacido. Su importancia viene dada por la repercusión que tiene en el desarrollo del individuo tanto a nivel organcio, psicológico, pedagógico y sobre todo en el área del lenguaje, pueden presentar trastornos añadidos de caracter otológico, dental, psicológico y retrasos escolares... Los sujetos que presentan esta malformación tienen alteraciones de lenguaje oral como: golpe de glois, nalsalizac...

  6. Ventajas de la cicatrización cutánea asistida por láser (LASH Advantages of laser assisted scar healing (LASH

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    S. Mordon

    2011-12-01

    Full Text Available La fase final de toda cirugía es la sutura y su cicatriz correspondiente y, frecuentemente, ésta es la única secuela visible de una intervención. La técnica LASH (cicatrización cutánea asistida por láser, estimula los mecanismos de reparación de la piel por efecto térmico, condicionando la calidad de la cicatrización. Estudios experimentales en ratones comparando los resultados obtenidos en heridas quirúrgicas radiadas con laser diodo 810 nm tras ser suturadas, con los obtenidos en igual tipo de heridas suturadas de manera convencional, han demostrado que se consiguen cicatrices mucho menos visibles cuando se practica el tratamiento con láser. La histología confirma, comparativamente, una notable aceleración del proceso cicatricial con modificación del TGFβ (Transforming Growth Factor-Beta directamente implicado en la reparación tisular, en los animales en los que la sutura fue asistida por láser. Igualmente, el análisis tensiométrico demostró mayor resistencia a la acción de estiramiento mecánico en estas heridas. Estudios clínicos en pacientes sometidos a dermolipectomia, reducción mamaria y estiramiento facial, demuestran que al tratar con LASH una parte o una de las líneas de sutura, los análisis realizados tanto por los pacientes como por cirujanos independientes a los 8 días, 3 meses y un año, evidencian resultados más favorables para la técnica láser, Las dosis eficaces determinadas para las fluencias láser están entre 80 y 120 J/cm². La técnica LASH es simple de efectuar, reproducible, rápida y ofrece una clara evidencia de que es posible reducir considerablemente la cicatriz, logrando que ésta sea de mejor calidad y más estética.Suture is the final stage of surgery and as a consequence, a scar is frequently the only visible effect after an operation. LASH technique (Laser Assisted Scar Healing produces thermal effects to stimulate mechanisms for tissue repair that will determine the quality of the scar. In the experimental phase, rats were irradiated with 810 nm diode-laser after surgical wounds were sutured, and then, compared to another group of rats with the same type of wounds which were sutured with conventional techniques. The results were that those rats treated with laser had less visible scars. Histology comparatively confirmed a notable acceleration in the scarring process with modification of the TGFβ (Transforming Growth Factor-Beta, which is directly involved in tissue repair in those rats treated with laser. The tensiometric analysis also demonstrated a better resistance to mechanical stress of wounds. Clinically, in dermolipectomy patients, breast reductions and facial lifts, in which part of the sutures were treated with LASH, at 8 days, 3 months and 1 year controls, evaluated by independent surgeons to the study and by patients, statistical results were more favourable for patients treated with LASH technique. The effective doses determined for treatment were laser fluencies between 80 and 120 J/cm². LASH is a fast, simple to carry out and reproducible method, with clear evidence that it is possible to considerably reduce scars, giving them a better quality and aesthetic appearance.

  7. Ventajas Del Perenox. Fungicida de la Casa COOPER sobre el Caldo Bordelés y otros productos a base de cobre.

    Directory of Open Access Journals (Sweden)

    Universidad Nacional de Colombia Facultad de Ciencias Agrarias

    1941-10-01

    Full Text Available "Perenox" es un Oxido de Cobre especialmente preparado, presentado en la forma de un polvo dispersivo extraordinariamente soluble en agua. Contiene 50 % de Cobre, mientras que los cristales del Sulfato de Cobre sólo contienen 25%, Una libra de "Perenox" reemplaza a lo menos 4 libras de Sulfato de Cobre y la correspondiente cantidad de cal y adherentes necesarios para la preparación del Caldo Bordelés. El "Perenox" se puede usar en todos esos casos en que entra el empleo del Caldo Bordelés, como por ejemplo para fumigar contra la "Gota" de la papa, la "Sigatoka" del banano, enfermedades de los cafetos, árboles de cacao, árboles frutales, etc. Se puede agregar al "Perenox" arseniato de plomo u otras substancias cuando se desee también controlar plagas de insectos.

  8. Advantages of the synthetic technique for the conduction of short circuit tests to breakers; Ventajas de la tecnica sintetica para realizar pruebas de corto circuito a interruptores

    Energy Technology Data Exchange (ETDEWEB)

    Sibilski, Henry [Instituto Electrotecnico de Varsovia, Varsovia (Poland); Ochoa Vivanco, Ruben [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1986-12-31

    In this article the operational principle of the synthetic test is described; specifically of the current injection circuit in parallel. Its utilization in the research and development of new breaker models and its wide possibilities regarding its testing characteristics is outlined. Likewise the different tests that can be performed by means of the synthetic technique are described. Finally the importance of the synthetic tests is outlined for the development of own technology in the area of interruption equipment and emphasis is made that in industrialized countries this technique is of common practice. [Espanol] En este articulo se describe el principio de operacion de la prueba sintetica; especificamente del circuito de inyeccion de corriente en paralelo. Se destaca su utilizacion en la investigacion y desarrollo de nuevos modelos de interruptores y sus amplias posibilidades en cuanto a caracteristicas de prueba. Asimismo, se describen las diferentes pruebas que pueden realizarse mediante la tecnica sintetica. Por ultimo, se destaca la importancia de las pruebas sinteticas para el desarrollo de tecnologia propia en el area de equipos de interrupcion, y se hace notar que en paises desarrollados, esta tecnica es practica comun.

  9. Los intangibles del aceite de oliva como ventaja competitiva Olive Oil intangibility for competitive advantage Olive Oil intangibility for competitive advantage

    Directory of Open Access Journals (Sweden)

    Víctor Manuel Martín López

    2012-04-01

    Full Text Available Objeto: Utilización de nuevas estrategias para el reposicionamiento del Aceite de Oliva a través de los activos intangibles.Diseño/metodología/enfoque: Aplicación del marco teórico de la intangibilidad al Aceite de Oliva y conceptualización de los activos intangibles y desarrollo de un estudio estadístico cuantitativo de valoración de los conceptos planteados.Aportaciones y resultados: Se propone una conceptualización de los activos intangibles que conforman el significado del Aceite de Oliva, más allá de lo meramente alimenticio. El desarrollo de la conceptualización de la intangibilidad del Aceite de Oliva responde a una estrategia de reposicionamiento del producto ante la competencia en un escenario de globalización de los mercados.Limitaciones: El estudio parte de la limitación del uso de un método estadístico con un margen de confiabilidad exigente, pero difuso en la realidad, teniendo en cuenta que el impacto del consumo del Aceite de Oliva en el mundo es de tan sólo el 5% en el mercado de grasas vegetales.Implicaciones prácticas: El trabajo expone las características intangibles que tiene el Aceite de Oliva, más allá de lo meramente alimenticio. Esta caracterización no es algo nuevo, es simplemente una conceptualización de aspectos tan cotidianos que no se le da la importancia que verdaderamente tienen, sobre todo, como elementos de diferenciación ante la competencia en un mercado tan feroz como el que vivimos. El posicionamiento comercial de un producto necesita de nuevas estrategias de diferenciación y el Aceite de Oliva puede utilizar los intangibles que conforman su significado para, cuando menos, justificar que el precio sea mayor que otras grasas vegetales.Implicaciones sociales: El sector oleícola está en una situación de debilidad ante la depresión comercial importante que estamos viviendo, y ello arrastra a los olivicultores que dedican su trabajo a la producción de Aceite de Oliva, la mayoría implantados en el medio rural, lo que le infiere un impacto social importante por la gran pérdida de rentas que están sufriendo en los últimos años.Originalidad / Valor añadido: El Aceite de Oliva es un producto característico de la cultura mediterránea, y el trabajo conceptualiza todos aquellos aspectos que lo conforman desde que se comenzó a producir hace varios milenios y, cuyos significados, han ido perdiendo impacto en el conocimiento del consumidor actual. El reposicionamiento de un producto característico de nuestra forma de vida a partir de los valores intrínsecos de nuestra cotidianeidad añade una característica más a este trabajo y a los valores que caracterizan a nuestra cultura y nuestra sociedad.Purpose: New strategies and its uses to commercial reposition of the olive oil through the intangibles assets.Design/methodology/approach: The theoretical framework application of the olive oil intangibility and to concept the intangible assets and statistical research quantitative development to valorize the concepts.Findings: It proposes a conceptualization of the intangibles assets to create the olive oil concept, beyond to alimentary set. Conceptualization of the development of the intangibility of the olive oil responds to a repositioning strategy of the product in front of the competition in a globalization markets place.Research limitations/implications: The research begins from the use limitation in a statistical method demanding reliability margin, but really diffuse, given that the improvement of olive oil consumption is only 5% in the vegetables oils markets.Practical implications: The research proposes the intangibilities and characteristics of the olive oil. This isn´t new, it simply is a conceptualization of diary aspects but without importance, above all with the differentiation elements to competition actually. The commercial positioning of the product needs new strategies of differentiation and the olive oil can use the intangibles to confirm it means to justify the price expensive than other vegetable oils.Social implications: The oleo sector is in a fragile important situation to commercial depression, and that take the olive farmers from the rural areas. This information impact directly to the people to lose rent levels that they are suffering in last years.Originality/value: The olive oil is a characteristic product of the Mediterranean culture, and the research helps to conceptualize all the aspects that confirm the history and story of the olive oil from thousands years ago, and their means have been lost in this time. The repositioning of the product is characteristic of our way of live.Purpose: New strategies and its uses to commercial reposition of the olive oil through the intangibles assets.Design/methodology/approach: The theoretical framework application of the olive oil intangibility and to concept the intangible assets and statistical research quantitative development to valorize the concepts.Findings: It proposes a conceptualization of the intangibles assets to create the olive oil concept, beyond to alimentary set. Conceptualization of the development of the intangibility of the olive oil responds to a repositioning strategy of the product in front of the competition in a globalization markets place.Research limitations/implications: The research begins from the use limitation in a statistical method demanding reliability margin, but really diffuse, given that the improvement of olive oil consumption is only 5% in the vegetables oils markets.Practical implications: The research proposes the intangibilities and characteristics of the olive oil. This isn´t new, it simply is a conceptualization of diary aspects but without importance, above all with the differentiation elements to competition actually. The commercial positioning of the product needs new strategies of differentiation and the olive oil can use the intangibles to confirm it means to justify the price expensive than other vegetable oils.Social implications: The oleo sector is in a fragile important situation to commercial depression, and that take the olive farmers from the rural areas. This information impact directly to the people to lose rent levels that they are suffering in last years.Originality/value: The olive oil is a characteristic product of the Mediterranean culture, and the research helps to conceptualize all the aspects that confirm the history and story of the olive oil from thousands years ago, and their means have been lost in this time. The repositioning of the product is characteristic of our way of live.

  10. Autonomía laboral, transferencia de conocimiento y motivación de los trabajadores como fuente de ventajas competitivas

    Directory of Open Access Journals (Sweden)

    Sáenz Blanco Fabiola

    2010-08-01

    Full Text Available A partir de una revisión de la importancia empresarial del capital intelectual se analiza su aplicación a la empresa española Irizar, facilitando su salida de la crisis productiva. En este contexto, se pretende validar tres premisas de la generación de conocimiento, las cuales permiten entender cómo una empresa puede superar momentos críticos: (1 debe incentivarse la creatividad y procesos de toma de decisiones en los trabajadores – autonomía laboral–; e(2 se requiere desarrollar prácticas de recursos humanos en un entorno y cultura que potencien la transmisión de conocimientos y (3 es necesario mantener un elevado grado de compromiso en la fuerza de trabajo.

  11. Ventajas del mineral trióxido agregado y del hidróxido de calcio frente a patologías pulpares de tipo degenerativo

    Directory of Open Access Journals (Sweden)

    Edison Gabriel Quintero Ricardo

    2014-06-01

    Full Text Available ResumenEl agregado de trióxido mineral (MTA es un material desarrollado para endodoncia. Las principales indicaciones del MTA, son el tratamiento pulpar en dientes vitales (pulpotomias, recubrimiento pulpar directo, apicoformaciones (barrera apical, cirugía endodóncica, reparación de perforaciones furcales, laterales y las provocadas por las reabsorciones. El MTA favorece la formación de hueso y cemento, y puede facilitar la regeneración del ligamento periodontal sin provocar inflamación; como un coadyuvante del MTA en los procesos de reparación tenemos el hidróxido de calcio que es un potente agente bacteriostático y bactericida que se utiliza para el control de microorganismos cuando es empleado como medicamento intraconducto, igualmente actúa como agente catalizador en la modificación del pH en los tejidos periapicales con el fin de favorecer el proceso de cicatrización, presenta excelentes propiedades higroscópica en cuanto al control del exudado en conductos radiculares de dientes con lesiones periapicales grandes los cuales muchas veces presentan humedad persistente en los canales radiculares asimismo actúa en la prevención o detención de procesos resortivos ejerciendo efectos moduladores en la actividad clástica. Por tales propiedades el artículo tiene como fin mostrar los efectos a corto plazo que ocurren en una reabsorción interna y lesión apical al momento de utilizar mineral trióxido agregado (MTA e hidróxido de calcio como material intracanal. (Duazary 2009-II 141-146AbstractMineral trioxide aggregate (MTA is a new material developed for endodontics. The principal indications of MTA are vital pulp therapy (pulpotomy, direct pulp capping, apexification (apical plug, endodontic surgery, and lateral, furcal and resorption perforations repair. The MTA induce the formation of cementum and bone, and it may facilitate the regeneration of the periodontal ligament without causing any inflammation; as a helping of the MTA in the repair processes we have the bactericidal calcium hydroxide which is a powerful bacteriostatic agent and it is used for the control of microorganisms when is placed as a canal medication, also acts like catalytic agent in the modification of the pH in periapicals tissues with the purpose to favor the healing process, presents excellent higroscopic properties in the control of the exudates in root canals of teeth with great periapical injuries which often present persistent humidity in the root canals and also acts in the prevention or halting of resorptives processes exerting effects modulators in the clástica activity. The purpose of this article is to show the short term effects that happen in an internal resorption and apical injury at the time of using mineral trioxide aggregate (MTA and calcium hydroxide as a root canal medication.Key words: Mineral trioxide aggregate; calcium hydroxide; endodontics; microorganisms; Internal root resorption; apical lesion; root canal treatment.

  12. Indicaciones, ventajas e inconvenientes y probable utilización en trastrornos de la comunicación verbal del vendaje neurotisular

    OpenAIRE

    Castro Huelves, Beatriz de

    2014-01-01

    Introducción: Conociendo en profundidad los efectos terapéuticos, técnicas y formas de aplicación del Vendaje Neuromuscular y la anatomía del aparato fonador, analizar los trastornos de éste (en especial, las disfonías) que suelen tener un impacto en la calidad de vida de los individuos que los padecen, siendo en algunos casos causa de incapacidad laboral. Objetivo: se pretende evaluar los beneficios y eficacia del Vendaje Neuromuscular en trastornos orofaciales que afecten directa o indirect...

  13. Ventajas del reforzamiento de muros de bloques de tierra compactados (BTC, como opción para el rescate de viviendas rurales

    Directory of Open Access Journals (Sweden)

    Juárez, L. A.

    2010-06-01

    Full Text Available Experimental research was made in compressed soil block (BTC piles. These specimens were reinforced with hexagonal mesh and welded wire mesh to determinate its mechanics characteristics by means of axial and diagonal compression, and flexion tests. We made experimental assays in accord with Mexican Code specifications of NTCM(1 and UNAM(2 Engineering Institute researchers. In axial compression test, the piles reinforced with welded wire mesh had a significant increase in maxim admissible load (39% but had not in masonry strength (4%. In diagonal compression test, the reinforced groups had significant increases in both, load capacity (90-125% and masonry strength (60-83%. The strength and deformation capacity were higher in specimens reinforced with welded wire mesh. In the flexion test had similar results. Although the compression, shear and flexion design parameters was determinate, it’s important and necessary to make more tests to corroborate these results.

    Se realizó una investigación experimental en pilas de bloques de tierra compactados (BTC reforzadas con malla hexagonal y malla electrosoldada para determinar la influencia del refuerzo, mediante ensayes de compresión axial, compresión diagonal y flexión lateral, según lo especifican las Normas Técnicas Complementarias para Mampostería (NTCM(1 y UNAM(2 del DF, en México. En el ensayo a compresión axial, se determinó que la carga máxima admisible se incrementó significativamente en el grupo reforzado con malla electrosoldada (39%, no así la resistencia (4%. En el ensaye a compresión diagonal, el incremento en la carga máxima admisible y resistencia fue significativo para los dos grupos reforzados, de 90 a 125% y de 60 a 83% respectivamente. A flexión lateral los incrementos fueron altamente significativos para el grupo reforzado con malla electrosoldada. Aunque se determinaron los parámetros de diseño a compresión, cortante y flexión del BTC, es importante realizar mas ensayes para corroborar estos resultados.

  14. Bitcoin System

    Directory of Open Access Journals (Sweden)

    Jan Lánský

    2017-06-01

    Full Text Available Cryptocurrency systems are purely digital and decentralized systems that use cryptographic principles to confirm transactions. Bitcoin is the first and also the most widespread cryptocurrency. The aim of this article is to introduce Bitcoin system using a language understandable also to readers without computer science education. This article captures the Bitcoin system from three perspectives: internal structure, network and users. Emphasis is placed on brief and clear definitions (system components and their mutual relationships. A new system view of the stated terms constitutes author’s own contribution.

  15. Citrus orchard planted with no tillage and conventional systemsHuerto de cítricos plantado con sistema de cero labranza y sistema convencional

    Directory of Open Access Journals (Sweden)

    Carmen Silvia Vieira Janeiro Neves

    2010-02-01

    Full Text Available No tillage system has brought many advantages to soil protection, without reducing the yield of annual crops. This system has been adapted for Citrus orchards, with the plantation of trees in furrows opened in areas previously occupied by pastures. This work had as objective to evaluate tree development, root system, yield, and soil characteristics in an orchard planted in two systems. The study was made in Parana State, Brazil, in a medium texture oxisol with ‘Valência’ orange (Citrus sinensis L. trees with Rangpur lime rootstock (Citrus limonia Osbeck. The treatments were no tillage (furrowing and plantation and conventional plantation (hole area plowing and disk harrowing before furrowing and plantation. The yield was 86 - 129 kg of fruits per plant, without significant difference between treatments. The plantation systems either do not affect the development of the plants, the amount of roots and the fruit quality. In the conventional plantation system the soil has greater resistance to penetration in inter rows than in the zero tillage system plantation.El sistema de cero labranza ha traído muchas ventajas en la protección del suelo, sin perjudicar el rendimiento de los cultivos anuales. Este sistema ha sido adaptado para los huertos citrícolas, realizándose la plantación en surcos abiertos en terrenos anteriormente ocupados por pastizales. El trabajo tuvo como objetivo evaluar el desarrollo de las plantas y del sistema radicular, producción, características del suelo en un huerto plantado en dos sistemas de labranza. El estudio fue realizado en el Noroeste de Paraná, en un oxisol con textura media, en plantas de naranja ‘Valência’ con patrón de lima Rangpur. Los tratamientos evaluados fueron: cero labranza (apertura de surcos y plantación y plantación convencional (arado de discos y grada, seguido de apertura de surcos y plantación. La producción fue de 86 a 129 kg de frutos por planta, sin diferencia significativa

  16. Intelligent Systems

    Data.gov (United States)

    National Aeronautics and Space Administration — The autonomous systems (AS) project, led by NASA Ames, is developing software for system operation automation. AS technology will help astronauts make more decisions...

  17. Crystal Systems.

    Science.gov (United States)

    Schomaker, Verner; Lingafelter, E. C.

    1985-01-01

    Discusses characteristics of crystal systems, comparing (in table format) crystal systems with lattice types, number of restrictions, nature of the restrictions, and other lattices that can accidently show the same metrical symmetry. (JN)

  18. Filter systems

    International Nuclear Information System (INIS)

    Vanin, V.R.

    1990-01-01

    The multidetector systems for high resolution gamma spectroscopy are presented. The observable parameters for identifying nuclides produced simultaneously in the reaction are analysed discussing the efficiency of filter systems. (M.C.K.)

  19. Tear System

    Science.gov (United States)

    ... and symptoms may result from the tear drainage system becoming obstructed at any point from the puncta ... specializes in the eyelids, orbit, and tear drain system. It’s also important that he or she is ...

  20. Biliary system

    Science.gov (United States)

    The biliary system creates, moves, stores, and releases bile into the duodenum . This helps the body digest food. It also assists ... from the liver to the duodenum. The biliary system includes: The gallbladder Bile ducts and certain cells ...

  1. Expert systems

    International Nuclear Information System (INIS)

    Haldy, P.A.

    1988-01-01

    The definitions of the terms 'artificial intelligence' and 'expert systems', the methodology, areas of employment and limits of expert systems are discussed. The operation of an expert system is described, especially the presentation and organization of knowledge as well as interference and control. Methods and tools for expert system development are presented and their application in nuclear energy are briefly addressed. 7 figs., 2 tabs., 6 refs

  2. Watchdog System

    DEFF Research Database (Denmark)

    Madsen, Tanja Kidholm Osmann; Bahnsen, Chris Holmberg; Jensen, Morten Bornø

    This deliverable is part of WP4. Overall WP4 is motivated by the need for automatic systems that can ease the task of annotating massive amounts of traffic data. Concretely this deliverable is related to WP4.2 - the watchdog system. The idea with the watchdog is to develop a system that can remov...

  3. Embedded Systems

    Indian Academy of Sciences (India)

    system programmers should take into consideration all possi- bilities and write programs that do not fail. Responsiveness: Embedded systems should respond to events as soon as possible. For example, a patient monitoring system should process the patient'S heart signals quickly and immedi- ately notify if any abnormality ...

  4. Systems Engineering

    Science.gov (United States)

    Pellerano, Fernando

    2015-01-01

    This short course provides information on what systems engineering is and how the systems engineer guides requirements, interfaces with the discipline leads, and resolves technical issues. There are many system-wide issues that either impact or are impacted by the thermal subsystem. This course will introduce these issues and illustrate them with real life examples.

  5. Creative Systems

    DEFF Research Database (Denmark)

    Manelius, Anne-Mette; Beim, Anne

    2007-01-01

    Opsamling af diskussioner på konferencen og udstillingen Creative Systems i september/oktober 2007. Konferencen og Udstillingen Creative Systems sætter fokus på systemer som en positiv drivkraft i den kreative skabelsesproces. CINARK inviterede fire internationale kapaciteter, som indenfor hver...

  6. Systems Biology

    Indian Academy of Sciences (India)

    IAS Admin

    Systems biology seeks to study biological systems as a whole, contrary to the reductionist approach that has dominated biology. Such a view of biological systems emanating from strong foundations of molecular level understanding of the individual components in terms of their form, function and interactions is promising to ...

  7. Digestive System

    Science.gov (United States)

    ... Staying Safe Videos for Educators Search English Español Digestive System KidsHealth / For Parents / Digestive System What's in this ... the body can absorb and use. About the Digestive System Almost all animals have a tube-type digestive ...

  8. Embedded Systems

    Indian Academy of Sciences (India)

    sumer electronic systems, they are cost sensitive. Thus their cost must be low. Robustness: Embedded systems should be robust since they operate in a harsh environment. They should endure vibrations, power supply fluctuations and excessive heat. Due to limited power supply in an embedded system, the power ...

  9. Operating systems

    CERN Document Server

    Tsichritzis, Dionysios C; Rheinboldt, Werner

    1974-01-01

    Operating Systems deals with the fundamental concepts and principles that govern the behavior of operating systems. Many issues regarding the structure of operating systems, including the problems of managing processes, processors, and memory, are examined. Various aspects of operating systems are also discussed, from input-output and files to security, protection, reliability, design methods, performance evaluation, and implementation methods.Comprised of 10 chapters, this volume begins with an overview of what constitutes an operating system, followed by a discussion on the definition and pr

  10. Multifunction system

    International Nuclear Information System (INIS)

    Wauthier, J.; Fiori, R.

    1990-01-01

    The development, the characteristics and the applications of a multifunction system are presented. The system is used on the RBES laboratory pipes, at Marcoule. The system was developed in order to allow, without time loss, the modification of the circuit function by replacing only one component. The following elements form the multifunction system: a fixed base, which is part of the tube, a removable piece, which is inserted into the base, a cover plate and its locking system. The material, chosen among commercial trade marks, required small modifications in order to be used in the circuit [fr

  11. Cognitive Systems

    DEFF Research Database (Denmark)

    The tutorial will discuss the definition of cognitive systems as the possibilities to extend the current systems engineering paradigm in order to perceive, learn, reason and interact robustly in open-ended changing environments. I will also address cognitive systems in a historical perspective an...... in cognitive systems include e.g. personalized information systems, sensor network systems, social dynamics system and Web2.0, and cognitive components analysis. I will use example from our own research and link to other research activities.......The tutorial will discuss the definition of cognitive systems as the possibilities to extend the current systems engineering paradigm in order to perceive, learn, reason and interact robustly in open-ended changing environments. I will also address cognitive systems in a historical perspective...... to be modeled within a limited set of predefined specifications. There will inevitably be a need for robust decisions and behaviors in novel situations that include handling of conflicts and ambiguities based on the capability and knowledge of the artificial cognitive system. Further, there is a need...

  12. Expert System

    DEFF Research Database (Denmark)

    Hildebrandt, Thomas Troels; Cattani, Gian Luca

    2016-01-01

    An expert system is a computer system for inferring knowledge from a knowledge base, typically by using a set of inference rules. When the concept of expert systems was introduced at Stanford University in the early 1970s, the knowledge base was an unstructured set of facts. Today the knowledge...... base of expert systems is often given in terms of an ontology, extracted and built from various data sources by employing natural language-processing and statistics. To emphasize such capabilities, the term “expert” is now often replaced by “cognitive,” “knowledge,” “knowledge-based,” or “intelligent......” system. With very few exceptions, general-purpose expert systems have failed to emerge so far. However, expert systems are applied in specialized domains, particularly in healthcare. The increasing availability of large quantities of data to organizations today provides a valuable opportunity...

  13. Ternary systems

    International Nuclear Information System (INIS)

    Kagan, D.N.; Hubberstey, P.; Barker, M.G.

    1985-01-01

    The paper reviews the experimental and theoretical studies carried out on multicomponent alkali metal systems. Solid-liquid phase equilibria studies are mainly concerned with the systems Na-K-Rb and Na-K-Cs, and data on the liquidus temperatures in these systems are presented. The thermodynamic properties of the ternary Na-K-Cs eutectic system have been determined experimentally, and the enthalpy, heat capacity and excess functions of the alloy are given. An analysis of calculational methods used in determining thermodynamic functions of ternary liquid metals systems is described. Finally, data are tabulated for the density, compressibility, saturated vapour pressure, viscosity and thermal conductivity of the ternary Na-K-Cs eutectic system. (UK)

  14. Material Systems

    DEFF Research Database (Denmark)

    Jensen, Mads Brath; Mortensen, Henrik Rubæk; Mullins, Michael

    2009-01-01

    This paper describes and reflects upon the results of an investigative project which explores the setting up of a material system - a parametric and generative assembly consisting of and taking into consideration material properties, manufacturing constraints and geometric behavior. The project...... approaches the subject through the construction of a logic-driven system aiming to explore the possibilities of a material system that fulfills spatial, structural and performative requirements concurrently and how these are negotiated in situations where they might be conflicting....

  15. Recommender systems

    CERN Document Server

    Kembellec, Gérald; Saleh, Imad

    2014-01-01

    Acclaimed by various content platforms (books, music, movies) and auction sites online, recommendation systems are key elements of digital strategies. If development was originally intended for the performance of information systems, the issues are now massively moved on logical optimization of the customer relationship, with the main objective to maximize potential sales. On the transdisciplinary approach, engines and recommender systems brings together contributions linking information science and communications, marketing, sociology, mathematics and computing. It deals with the understan

  16. Energetic Systems

    Data.gov (United States)

    Federal Laboratory Consortium — The Energetic Systems Division provides full-spectrum energetic engineering services (project management, design, analysis, production support, in-service support,...

  17. Intelligent systems

    CERN Document Server

    Irwin, J David

    2011-01-01

    Technology has now progressed to the point that intelligent systems are replacing humans in the decision making processes as well as aiding in the solution of very complex problems. In many cases intelligent systems are already outperforming human activities. Artificial neural networks are not only capable of learning how to classify patterns, such images or sequence of events, but they can also effectively model complex nonlinear systems. Their ability to classify sequences of events is probably more popular in industrial applications where there is an inherent need to model nonlinear system

  18. Reactive Systems

    DEFF Research Database (Denmark)

    Aceto, Luca; Ingolfsdottir, Anna; Larsen, Kim Guldstrand

    A reactive system comprises networks of computing components, achieving their goals through interaction among themselves and their environment. Thus even relatively small systems may exhibit unexpectedly complex behaviours. As moreover reactive systems are often used in safety critical systems...... they are best used. Milner's CCS and its operational semantics are introduced, together with the notions of behavioural equivalences based on bisimulation techniques and with recursive extensions of Hennessy-Milner logic. In the second part of the book, the presented theories are extended to take timing issues...

  19. Anticipatory systems as linguistic systems

    Science.gov (United States)

    Ekdahl, Bertil

    2000-05-01

    The idea of system is well established although not well defined. What makes up a system depends on the observer. Thinking in terms of systems is only a convenient way to conceptualize organizations, natural or artificial, that show coherent properties. Among all properties, which can be ascribed to systems, one property seems to be more outstanding than others, namely that of being anticipatory. In nature, anticipatory properties are found only in living organizations. In this way it can be said to separate non-living systems from living because there is no indication that any natural phenomenon occurring in systems where there is no indication of life is anticipatory. The characteristic of living systems is that they are exposed to the evolution contrary to causal systems that do not undergo changes due to the influence of the environment. Causal systems are related to the past in such a way that subsequent situations can be calculated from knowledge of past situations. In causal systems the past is the cause of the present and there is no reference to the future as a determining agent, contrary to anticipatory systems where expectations are the cause of the present action. Since anticipatory properties are characteristic of living systems, this property, as all other properties in living systems, is a result of the evolution and can be found in plants as well as in animals. Thus, it is not only tied to consciousness but is found at a more basic level, i.e., in the interplay between genotype and phenotype. Anticipation is part of the genetic language in such a way that appropriate actions, for events in the anticipatory systems environment, are inscribed in the genes. Anticipatory behavior, as a result of the interpretation of the genetic language, has been selected by the evolution. In this paper anticipatory systems are regarded as linguistic systems and I argue that as such anticipation cannot be fragmented but must be holistically studied. This has the

  20. Vacuum system

    OpenAIRE

    Gröbner, Oswald

    2006-01-01

    The vacuum system of a particle accelerator must provide the necessary conditions for the high energy beam to avoid loss of particles and deterioration of the beam quality. In this talk we will review basic design concepts, vacuum components and procedures required for an accelerator vacuum system.

  1. Immune System

    Science.gov (United States)

    ... jobs to do: B lymphocytes are like the body's military intelligence system, seeking out their targets and sending defenses ... like the soldiers, destroying the invaders that the intelligence system has ... that invades the body is called an antigen (pronounced: AN-tih-jun). ...

  2. Retrofitting Systems

    DEFF Research Database (Denmark)

    Rose, Jørgen

    1997-01-01

    This report gives an overview of the different retrofitting possibilities that are available today. The report looks at both external and internal systems for external wall constructions, roof constructions, floor constructions and foundations. All systems are described in detail in respect to use...

  3. GEOMASS system

    International Nuclear Information System (INIS)

    Ohyama, Takuya; Saegusa, Hiromitsu

    2009-03-01

    As a part of the research and development regarding characterisation of deep geological environment, the GEOMASS (GEOLOGICAL MODELLING ANALYSIS AND SIMULATION SOFTWARE) system has been developed by the Japan Atomic Energy Agency in order to carry out geological and hydrogeological modelling and groundwater flow simulation and so on. The GEOMASS system integrates a commercial geological interpretation system (EarthVision), which is used for geological modelling and visualisation, with a proprietary code for groundwater flow (FracAffinity). This integrated system allows users to make rapid improvement of models as data increases. Also, it is possible to perform more realistic groundwater flow simulation due to the capability of modelling the rock mass as a continuum with discrete hydro-structural features in the rock mass. This paper consists of 'Overview of GEOMASS system', FracAffinity Theoretical Background' and 'FracAffinity User Guide' and is edited as a GEOMASS system manual. 'Overview of GEOMASS system' describes the outline of this system. 'FracAffinity Theoretical Background' describes the information of technical background of FracAffinity software. FracAffinity User Guide' describes the structure of the FracAffinity input files, the usage of FracAffinity Interface and flow-solver. Updating of the FracAffinity has been continued as needed and FracAffinity version3.3 is the latest version at present (July 2008). (author)

  4. Operating Systems

    Indian Academy of Sciences (India)

    M Suresh Babu is currently a fourth year undergraduate student in the Department of. Computer Science and. Engineering, Narayana. Engineering College,. Nellore, Andhra Pradesh. He would like to work in operating systems, computer networks and also in Internet security concepts. Keywords. Operating systems, file sys-.

  5. Operating Systems

    Indian Academy of Sciences (India)

    The process concept and concurrency are at the heart of modern operating systems (OS). A process is the unit of work in a computer system. A process must be in main memory during execution. To improve the utilization of central processing unit. (CPU) as well as the speed of its response to its users, the computer must ...

  6. Caste System

    OpenAIRE

    Hoff, Karla

    2016-01-01

    In standard economics, individuals are rational actors and economic forces undermine institutions that impose large inefficiencies. The persistence of the caste system is evidence of the need for psychologically more realistic models of decision-making in economics. The caste system divides South Asian society into hereditary groups whose lowest ranks are represented as innately polluted. ...

  7. Energy System

    Energy Technology Data Exchange (ETDEWEB)

    Kaya, Yoichi

    1987-01-10

    In the wake of the oil shock in 1973, the need for developing more effective energy systems has been mounting. The dominant views and topics for power generation systems in terms of scale merit shifted from the advocacy of centralization/scaling-up of facilities to the soft energy path theory insisting on the efficiency of dispersed small-scale plants, followed by the recent holonic path theory which maintains that large and small scale plants should be centralized or dispersed in an optimum manner. At the same time, an autonomous-type system concept has emerged which points out that the energy systems can be operated efficiently through mutual coordination and cooperation between the suppliers and users to find a balance point that meets the market principle, while abolishing the conventional suppliers-governed system. As a result, the load management system based on time-of-use pricing or adaptive pricing is expected to be adopted widely in near future. All these new theories are aimed at developing flexible and reasonable system structures that can be adapted to the changing circumstances. (4 figs, 17 refs)

  8. Imaging system

    International Nuclear Information System (INIS)

    Froggatt, R.J.

    1981-01-01

    The invention provides a two dimensional imaging system in which a pattern of radiation falling on the system is detected to give electrical signals for each of a plurality of strips across the pattern. The detection is repeated for different orientations of the strips and the whole processed by compensated back projection. For a shadow x-ray system a plurality of strip x-ray detectors are rotated on a turntable. For lower frequencies the pattern may be rotated with a Dove prism and the strips condensed to suit smaller detectors with a cylindrical lens. (author)

  9. Dynamical systems

    CERN Document Server

    Sternberg, Shlomo

    2010-01-01

    Celebrated mathematician Shlomo Sternberg, a pioneer in the field of dynamical systems, created this modern one-semester introduction to the subject for his classes at Harvard University. Its wide-ranging treatment covers one-dimensional dynamics, differential equations, random walks, iterated function systems, symbolic dynamics, and Markov chains. Supplementary materials offer a variety of online components, including PowerPoint lecture slides for professors and MATLAB exercises.""Even though there are many dynamical systems books on the market, this book is bound to become a classic. The the

  10. Kaonic systems

    Directory of Open Access Journals (Sweden)

    Oset E.

    2012-12-01

    Full Text Available I make a short review of the situation of the kaonic systems, with novel information supporting the two Λ(1405 states from the K-d → nπΣ reaction. A review is made of the K¯$ar K$NN system with recent calculations converging to smaller bindings and larger widths. Novel systems involving two kaons and one nucleon or three kaons are also reported and finally a short discussion is made of the analogous state DNN for which recent studies find a large binding and a small width.

  11. Saturn Systems.

    Science.gov (United States)

    U Rehman, Habib; McKee, Nida A; McKee, Michael L

    2016-01-15

    Several ring systems (Saturn systems) have been studied using DFT methods that include dispersion effects. Comparison with X-ray structures are made with three systems, and the agreement is quite good. Binding enthalpies and binding free energies in dichloromethane and toluene have been computed. The effect of an encapsulated lithium cation is accessed by comparing C60 @(C6 H4 )10 and [Li@C60 @(C6 H4 )10 ](+). The [Li@C60 ](+) cation is a much better acceptor than C60 which leads to greater donor-acceptor interactions and larger charge transfer from the ring to [Li@C60 ](+). © 2015 Wiley Periodicals, Inc.

  12. Bubble systems

    CERN Document Server

    Avdeev, Alexander A

    2016-01-01

    This monograph presents a systematic analysis of bubble system mathematics, using the mechanics of two-phase systems in non-equilibrium as the scope of analysis. The author introduces the thermodynamic foundations of bubble systems, ranging from the fundamental starting points to current research challenges. This book addresses a range of topics, including description methods of multi-phase systems, boundary and initial conditions as well as coupling requirements at the phase boundary. Moreover, it presents a detailed study of the basic problems of bubble dynamics in a liquid mass: growth (dynamically and thermally controlled), collapse, bubble pulsations, bubble rise and breakup. Special emphasis is placed on bubble dynamics in turbulent flows. The analysis results are used to write integral equations governing the rate of vapor generation (condensation) in non-equilibrium flows, thus creating a basis for solving a number of practical problems. This book is the first to present a comprehensive theory of boil...

  13. ring system

    African Journals Online (AJOL)

    1,3,2-DIAZABORACYCLOALKANE. RING SYSTEM. Negussie Retta" and Robert H. Neilson. 'Department of Chemistry, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia. Department of Chemistry, Texas Christian University.

  14. Respiratory system

    Science.gov (United States)

    Bartlett, R. G., Jr.

    1973-01-01

    The general anatomy and function of the human respiratory system is summarized. Breathing movements, control of breathing, lung volumes and capacities, mechanical relations, and factors relevant to respiratory support and equipment design are discussed.

  15. Dryland systems

    CSIR Research Space (South Africa)

    Wessels, Konrad J

    2006-01-01

    Full Text Available This chapter describes the current condition of dryland systems with respect to the services they provide and the drivers that determine trends in their provision. Within the context of the mounting global concern caused by land degradation...

  16. Nanorobotic Systems

    Directory of Open Access Journals (Sweden)

    Lixin Dong

    2008-11-01

    Full Text Available Two strategies towards the realization of nanotechnology have been presented, i.e., top-down and bottom up. The former one is mainly based on nanofabrication and includes technologies such as nano-lithography, nano-imprint, and etching. Presently, they are still 2D fabrication processes with low resolution. The later one is an assembly-based technique. At present, it includes such items as self-assembly, dip-pen lithography, and directed self-assembly. These techniques can generate regular nano patterns in large scales. To fabricate 3D complex nano devices there are still no effective ways by so far. Here we show our effort on the development of a nano laboratory, a prototype nanomanufacturing system, based on nanorobotic manipulations. In which, we take a hybrid strategy as shown in Fig. 1. In this system, nano fabrication and nano assembly can be performed in an arbitrary order to construct nano building blocks and finally nano devices. The most important feature in this system is that the products can be fed back into the system to shrink the system part by part leading to nanorobots. Property characterization can be performed in each intermediate process. Due to the nanorobotic manipulation system, dynamic measurement can be performed rather than conventional static observations.

  17. System-of-Systems Complexity

    Directory of Open Access Journals (Sweden)

    Hermann Kopetz

    2013-11-01

    Full Text Available The global availability of communication services makes it possible to interconnect independently developed systems, called constituent systems, to provide new synergistic services and more efficient economic processes. The characteristics of these new Systems-of-Systems are qualitatively different from the classic monolithic systems. In the first part of this presentation we elaborate on these differences, particularly with respect to the autonomy of the constituent systems, to dependability, continuous evolution, and emergence. In the second part we look at a SoS from the point of view of cognitive complexity. Cognitive complexity is seen as a relation between a model of an SoS and the observer. In order to understand the behavior of a large SoS we have to generate models of adequate simplicity, i.e, of a cognitive complexity that can be handled by the limited capabilities of the human mind. We will discuss the importance of properly specifying and placing the relied-upon message interfaces between the constituent systems that form an open SoS and discuss simplification strategies that help to reduce the cognitive complexity.

  18. Una ecuación diferencial para el cálculo de las funciones de Jost para potenciales regulares Aplicación al sistema e‾+ H(1s A differential equation for the calculation of the functions de jost for regular potentials Application to the system e

    Directory of Open Access Journals (Sweden)

    Héctor Maya Taboada

    2011-06-01

    Full Text Available La función de Jost Fl es el concepto teórico que permite estudiar de una manera unificada los estados ligados, virtuales, dispersados y resonantes que pueden originarse en las interacciones entre dos sistemas cuánticos. En teoría de colisiones la función de Jost Fl juega un papel muy importante, puesto que se relaciona de forma directa con la matriz de dispersión S. En la mayoría de los métodos existentes en teoría de colisiones para el cálculo de la función Fl, primero es necesario conocer la solución regular del sistema tratado, la cual se obtiene via solución de la ecuación radial de Schrödinger, para poder hallar después la función Fl. Con la metodología propuesta en este trabajo se obtieneuna ecuación diferencial lineal ordinaria de segundo orden cuya solución en los límites asintóticos coincide con la función Fl. La ventaja del trabajo presente es que al solucionar la ecuación diferencial, mencionada antes, se puedeobtener de manera directa la función Fl, sin tener que hallar la solución regular del problema. Otra ventaja es que no importando las condiciones iniciales (reales que se escojan para la solución de la ecuación diferencial, siempre se obtienen los mismos elementos de la matriz S. Como un ejemplo y prueba de la metodología, se resuelve dicha ecuación diferencial numéricamente, para la dispersión elástica de electrones por átomos de hidrogeno en el estado base a bajas energías (e− + H(1s, obteniendo para este sistema la función Fl, los elementos de la matriz S y los corrimientos de fase, estos últimos se comparan con los calculados por Klaus BartschatThe function of Jost Fl is the theoretical concept that allows to study in an unified way the bound, virtual, scattered and resonant states that can originate in the interactions between two quantum systems. In theory of collisions the function of Jost Fl plays a very important role, since it is related in a direct way with the scattering

  19. Systems Studies

    Energy Technology Data Exchange (ETDEWEB)

    Graham, R.L.

    1998-03-17

    The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

  20. Fiscal system analysis - contractual systems

    International Nuclear Information System (INIS)

    Kaiser, M.J.

    2006-01-01

    Production sharing contracts are one of the most popular forms of contractual system used in petroleum agreements around the world, but the manner in which the fiscal terms and contract parameters impact system measures is complicated and not well understood. The purpose of this paper is to quantify the influence of private and market uncertainty in contractual fiscal systems. A meta-modelling approach is employed that couples the results of a simulation model with regression analysis to construct numerical functionals that quantify the fiscal regime. Relationships are derived that specify how the present value, rate of return, and take statistics vary as a function of the system parameters. The deepwater Girassol field development in Angola is taken as a case study. (author)

  1. Factibilidad de instalación de sistemas fotovoltaicos conectados a red; Feasibility of installation of connected photovoltaic systems to grid

    Directory of Open Access Journals (Sweden)

    Carlos Manuel Giraudy Arafet

    2015-04-01

    Full Text Available Se muestra la posibilidad de implementar sistemas fotovoltaicos conectados a red en las áreas próximas a las centrales eléctricas para la generación distribuida en la provincia Santiago de Cuba, introducir alternativas de generación de energía, aprovechando los sistemas de transformación, distribución y subestaciones existentes, proponiendo una nueva visión con la explotación de la energía renovable, como alternativa viable de desarrollo sustentable. Se hace un análisis desde el punto de vista del ordenamiento territorial, de la capacidad que pudiera instalarse, así como las ventajas que traería el montaje de los sistemas renovables conectados a red. Los estudios se realizan a partir de la radiación solar que incide en las áreas próximas a la central eléctrica (CE de San Luis, aportando los criterios sobre la cantidad de energía que se podría generar y la reducción de los gastos asociados al combustible fósil y los impactos ambientales.  The possibility is shown of implementing connected photovoltaic systems to net in the next areas to the electric power stations for the generation distributed in the county Santiago from Cuba, to introduce alternative of energy generation, taking advantage of the transformation, distribution and existent substations systems, proposing a new vision with the exploitation of the renewable energy, as viable alternative of sustainable development. An analysis is made from the point of view of the territorial ordination, of the capacity that could settle, as well as the advantages it would bring the assembly from the connected renewable systems to grid. The studies are carried out starting from the solar radiation that impacts in the next areas to San Luis power station, contributing the approaches on the quantity of energy that you could generate and the reduction of the expenses associated the fossil fuel and the environmental impacts.

  2. Factibilidad de instalación de sistemas fotovoltaicos conectados a red; Feasibility of installation of connected photovoltaic systems to grid

    Directory of Open Access Journals (Sweden)

    Carlos Manuel Giraudy Arafet

    2014-06-01

    Full Text Available Se muestra la posibilidad de implementar sistemas fotovoltaicos conectados a red en las áreas próximas a las centrales eléctricas para la generación distribuida en la provincia Santiago de Cuba, introducir alternativas de generación de energía, aprovechando los sistemas de transformación, distribución y subestaciones existentes, proponiendo una nueva visión con la explotación de la energía renovable, como alternativa viable de desarrollo sustentable. Se hace un análisis desde el punto de vista del ordenamiento territorial, de la capacidad que pudiera instalarse, así como las ventajas que traería el montaje de los sistemas renovables conectados a red. Los estudios se realizan a partir de la radiación solar que incide en las áreas próximas a la central eléctrica (CE de San Luis, aportando los criterios sobre la cantidad de energía que se podría generar y la reducción de los gastos asociados al combustible fósil y los impactos ambientales. The possibility is shown of implementing connected photovoltaic systems to net in the next areas to the electric power stations for the generation distributed in the county Santiago from Cuba, to introduce alternative of energy generation, taking advantage of the transformation, distribution and existent substations systems, proposing a new vision with the exploitation of the renewable energy, as viable alternative of sustainable development. An analysis is made from the point of view of the territorial ordination, of the capacity that could settle, as well as the advantages it would bring the assembly from the connected renewable systems to grid. The studies are carried out starting from the solar radiation that impacts in the next areas to San Luis power station, contributing the approaches on the quantity of energy that you could generate and the reduction of the expenses associated the fossil fuel and the environmental impacts.

  3. Computer systems

    Science.gov (United States)

    Olsen, Lola

    1992-01-01

    In addition to the discussions, Ocean Climate Data Workshop hosts gave participants an opportunity to hear about, see, and test for themselves some of the latest computer tools now available for those studying climate change and the oceans. Six speakers described computer systems and their functions. The introductory talks were followed by demonstrations to small groups of participants and some opportunities for participants to get hands-on experience. After this familiarization period, attendees were invited to return during the course of the Workshop and have one-on-one discussions and further hands-on experience with these systems. Brief summaries or abstracts of introductory presentations are addressed.

  4. Microbiology System

    Science.gov (United States)

    1992-01-01

    Technology originating in a NASA-sponsored study of the measurement of microbial growth in zero gravity led to the development of Biomerieux Vitek, Inc.'s VITEK system. VITEK provides a physician with accurate diagnostic information and identifies the most effective medication. Test cards are employed to identify organisms and determine susceptibility to antibiotics. A photo-optical scanner scans the card and monitors changes in the growth of cells contained within the card. There are two configurations - VITEK and VITEK JR as well as VIDAS, a companion system that detects bacteria, viruses, etc. from patient specimens. The company was originally created by McDonnell Douglas, the NASA contractor.

  5. System Description:

    DEFF Research Database (Denmark)

    Schürmann, Carsten; Poswolsky, Adam

    2009-01-01

    Delphin is a functional programming language [Adam Poswolsky and Carsten Schürmann. Practical programming with higher-order encodings and dependent types. In European Symposium on Programming (ESOP), 2008] utilizing dependent higher-order datatypes. Delphin's two-level type-system cleanly separates...... data from computation, allowing for decidable type checking. The data level is LF [Robert Harper, Furio Honsell, and Gordon Plotkin. A framework for defining logics. Journal of the Association for Computing Machinery, 40(1):143-184, January 1993], which allows for the specification of deductive systems...

  6. Distributed systems

    CERN Document Server

    Van Steen, Maarten

    2017-01-01

    For this third edition of "Distributed Systems," the material has been thoroughly revised and extended, integrating principles and paradigms into nine chapters: 1. Introduction 2. Architectures 3. Processes 4. Communication 5. Naming 6. Coordination 7. Replication 8. Fault tolerance 9. Security A separation has been made between basic material and more specific subjects. The latter have been organized into boxed sections, which may be skipped on first reading. To assist in understanding the more algorithmic parts, example programs in Python have been included. The examples in the book leave out many details for readability, but the complete code is available through the book's Website, hosted at www.distributed-systems.net.

  7. Sistemas expertos y su aplicación en medicina Medical expert systems

    OpenAIRE

    Javier E. Fox

    1991-01-01

    El presente artículo es una revisión de los Sistemas Expertos Médicos como aplicación concreta de la inteligencia Artificial. Se hace un recuento histórico de los mismos desde la década de los setenta; se dan nociones generales sobre lo que son los Sistemas Expertos, su arquitectura interna y las personas que Interactúan con ellos para hacer posibles su desarrollo y aplicación; se destacan sus ventajas y desven...

  8. Systems Biology

    Energy Technology Data Exchange (ETDEWEB)

    Wiley, H S.

    2006-06-01

    The biology revolution over the last 50 years has been driven by the ascendancy of molecular biology. This was enthusiastically embraced by most biologists because it took us into increasingly familiar territory. It took mysterious processes, such as the replication of genetic material and assigned them parts that could be readily understood by the human mind. When we think of ''molecular machines'' as being the underlying basis of life, we are using a paradigm derived from everyday experience. However, the price that we paid was a relentless drive towards reductionism and the attendant balkanization of biology. Now along comes ''systems biology'' that promises us a solution to the problem of ''knowing more and more about less and less''. Unlike molecular biology, systems biology appears to be taking us into unfamiliar intellectual territory, such as statistics, mathematics and computer modeling. Not surprisingly, systems biology has met with widespread skepticism and resistance. Why do we need systems biology anyway and how does this new area of research promise to change the face of biology in the next couple of decades?

  9. Operating Systems

    Indian Academy of Sciences (India)

    areas in which this type is useful are multimedia, virtual reality, and advanced scientific projects such as undersea exploration and planetary rovers. Because of the expanded uses for soft real-time functionality, it is finding its way into most current operating systems, including major versions of Unix and Windows NT OS.

  10. Solar system

    CERN Document Server

    Bell, Samantha

    2018-01-01

    "Using the new Next Generation Science Standards (NGSS), the My World of Science series provides the earliest readers with background on key STEM concepts. Solar System explores basic planetary astronomy in a simple, engaging way that will help readers develop word recognition and reading skills. Includes a glossary and index."-- Provided by publisher.

  11. Systems Science

    Science.gov (United States)

    Christakis, Alexander; Hammond, Debora; Jackson, Michael; Laszlo, Alexander; Mitroff, Ian; Snowden, Dave; Troncale, Len; Carr-Chellman, Alison; Spector, J. Michael; Wilson, Brent

    2013-01-01

    Scholars representing the field of systems science were asked to identify what they considered to be the most exciting and imaginative work currently being done in their field, as well as how that work might change our understanding. The scholars included Alexander Christakis, Debora Hammond, Michael Jackson, Alexander Laszlo, Ian Mitroff, Dave…

  12. Bioenergy systems

    International Nuclear Information System (INIS)

    Mitchell, C.P.

    1997-01-01

    The objective of this paper is to demonstrate that a bioenergy system has to be considered as an integrated process in which each stage or step interacts with other steps in the overall process. There are a number of stages in the supply and conversion of woody biomass for energy. Each step in the chain has implications for the next step and for overall system efficiency. The resource can take many forms and will have varying physical and chemical characteristics which will influence the efficiency and cost of conversion. The point in the supply chain at which size and moisture content is reduced and the manner in which it is done is influential in determining feedstock delivered cost and overall system costs. To illustrate the interactions within the overall system, the influence of the nature, size and moisture content of delivered feedstocks on costs of generating electricity via thermal conversion processes is examined using a model developed to investigate the inter-relationships between the stages in the supply chain. (author)

  13. Transport system

    NARCIS (Netherlands)

    Drenth, K.F.

    1999-01-01

    The transport system comprises at least one road surface (2) and at least one vehicle (4) on wheels (6). The road surface (2) has a substantially bowl-shaped cross section and the vehicle (4) is designed so that the wheels (6) run directly on the road surface (2) while the road surface (2) acts as a

  14. Barrier Systems

    NARCIS (Netherlands)

    Heteren, S. van

    2015-01-01

    Barrier-system dynamics are a function of antecedent topography and substrate lithology, Relative sea-level (RSL) changes, sediment availability and type, climate, vegetation type and cover, and various aero- and hydrodynamic processes during fair-weather conditions and extreme events. Global change

  15. Immune System

    Science.gov (United States)

    A properly functioning immune system is essential to good health. It defends the body against infectious agents and in some cases tumor cells. Individuals with immune deficiencies resulting from genetic defects, diseases (e.g., AIDS, leukemia), or drug therapies are more suscepti...

  16. Fusion systems

    OpenAIRE

    Aschbacher, Michael; Oliver, Bob

    2016-01-01

    This is a survey article on the theory of fusion systems, a relatively new area of mathematics with connections to local finite group theory, algebraic topology, and modular representation theory. We first describe the general theory and then look separately at these connections.

  17. Glymphatic system

    DEFF Research Database (Denmark)

    Benveniste, Helene; Nedergaard, Maiken

    2016-01-01

    a so-called glymphatic pathway which comprise the peri-vascular space and acuaporin-4 water channels on astroglial endfeet. As such the glymphatic pathway can be perceived as a hitherto overlooked compartment of the extracellular space of the central nervous system which is involved in clearance...

  18. Bricks / Systems

    DEFF Research Database (Denmark)

    At first glance, this book may appear eclectic. It contains writings from architectural practice in a language and structure based on subjective views and experiences, combined with research contributions based on systematic design investigations of discrete computational systems. Discussions range...... from an undulating masonry wall at the University of Virginia erected by then-U.S. President Thomas Jefferson to agile robotic manufacturing processes and computational solver strategies based on graph networks. Conversely, the focus of this anthology is expressed directly in the title: bricks...... and systems. The basis for this theme is the work conducted at the Utzon(x) Research Group at Aalborg University, in combination with the rich tradition and implementation of masonry work in Denmark, which has attracted increasing attention from architectural practitioners and researchers alike. How should...

  19. TUBO system

    International Nuclear Information System (INIS)

    Barbosa, H.J.C.; Guerreiro, J.N.C.; Toledo, E.M.

    1980-01-01

    Proceedings recently incorporated to TUBO system like the seismic analysis and the stress verification acccording to ASME-Boiler Rule and Pressure Vessel Code-section III are presented. The seismic analysis comprehend the consideration of uniform motion of the support, its multiple excitation, and the attainment of the spectral response for both cases. The module for stress verification uses stresses resulting fromthe combination of the loads specified by the user, in the automatic verification of permissible stresses for the pipings class 1 and 2, based on criteria NB-3650 and NC-3650 of ASME. The implementation of these proceedings in the TUBO system are discussed and a numerical example that covers the different phases of a stress analysis in a piping is presented [pt

  20. Systemic Architecture

    DEFF Research Database (Denmark)

    Poletto, Marco; Pasquero, Claudia

    This is a manual investigating the subject of urban ecology and systemic development from the perspective of architectural design. It sets out to explore two main goals: to discuss the contemporary relevance of a systemic practice to architectural design, and to share a toolbox of informational...... design protocols developed to describe the city as a territory of self-organization. Collecting together nearly a decade of design experiments by the authors and their practice, ecoLogicStudio, the book discusses key disciplinary definitions such as ecologic urbanism, algorithmic architecture, bottom......-up or tactical design, behavioural space and the boundary of the natural and the artificial realms within the city and architecture. A new kind of "real-time world-city" is illustrated in the form of an operational design manual for the assemblage of proto-architectures, the incubation of proto...

  1. Bilateral system. The ABACC system

    International Nuclear Information System (INIS)

    Nicolas, Ruben O.

    2001-01-01

    After relating the antecedents of the creation of the Brazilian-Argentine Agency for the Accounting and Control of Nuclear Materials (ABACC), the paper describes the common system of accounting and control set up by Argentina and Brazil. The organization of ABACC is also outlined

  2. Physical system requirements: Overall system

    International Nuclear Information System (INIS)

    1992-01-01

    The Nuclear Waste Policy Act (NWPA) of 1982 assigned to the Department of Energy (DOE) the responsibility for managing the disposal of spent nuclear fuel and high-level radioactive waste and established the Office of Civilian Radioactive Waste Management (OCRWM) for that purpose. The Secretary of Energy, in his November 1989 report to Congress (DOE/RW-0247), announced three new initiatives for conduct of the Civilian Radioactive Waste Management (CRWM) program. One of these initiatives was to establish improved management structure and procedures. In response, OCRWM performed a management study and the Direct subsequently issued the Management Systems Improvement Strategy (MSIS) on August 10, 1990, calling for a rigorous implementation of systems engineering principles with a special emphasis on functional analysis. This approach establishes a framework for integrating the program management efforts with the technical requirements analysis into a single, unified, and consistent program. The functional analysis approach recognizes that just the facilities and equipment comprising the physical waste management system must perform certain functions, so must certain programmatic and management functions be performed within the program in order to successfully bring the physical system into being

  3. Cardiovascular system

    International Nuclear Information System (INIS)

    Soulen, R.L.; Grosh, J.

    1984-01-01

    Invasive cardiovascular diagnostic procedures involve a finite risk and therefore can be recommended only when the benefit appears to exceed the risk by a substantial margin. The risk/benefit ratio varies not only with the procedure concerned but with the status of the vascular system, concomitant diseases, and the risks of both the suspected illness and its treatment. The risks inherent in the procedures per se are detailed in the sections to follow

  4. Security system

    Science.gov (United States)

    Baumann, Mark J.; Kuca, Michal; Aragon, Mona L.

    2016-02-02

    A security system includes a structure having a structural surface. The structure is sized to contain an asset therein and configured to provide a forceful breaching delay. The structure has an opening formed therein to permit predetermined access to the asset contained within the structure. The structure includes intrusion detection features within or associated with the structure that are activated in response to at least a partial breach of the structure.

  5. Systemic Assurance

    Science.gov (United States)

    2015-07-31

    early lifecycle phases will have intended quality outcomes. Requirements and Quality Validation Develop requirements elicitation and management...gradients within a system. That is, there are attack surfaces at internal APIs and service interfaces. The complexity also arises from particular features...interoperation (compatibility and support for with SoS APIs and practices), as well as a diverse range of ilities (evolvability/extensibility

  6. CONTROL SYSTEM

    Science.gov (United States)

    Shannon, R.H.; Williamson, H.E.

    1962-10-30

    A boiling water type nuclear reactor power system having improved means of control is described. These means include provisions for either heating the coolant-moderator prior to entry into the reactor or shunting the coolantmoderator around the heating means in response to the demand from the heat engine. These provisions are in addition to means for withdrawing the control rods from the reactor. (AEC)

  7. Análisis de métodos heurísticos de reconfiguración de sistemas de distribución para la reducción de pérdidas de potencia;Heuristics analysis of distribution system reconfiguration for power loss reduction

    Directory of Open Access Journals (Sweden)

    Jorge Enrique - Carrión González

    2011-11-01

    Full Text Available La dependencia cada vez mayor del consumo de energía eléctrica para las diferentes actividades humanas, hatraído como consecuencia que los usuarios exijan mayor calidad del servicio, por tal motivo las empresassuministradoras en todo el mundo buscan mejorar los esquemas de operación de las redes de distribución primaria,con las que distribuyen la energía eléctrica, para mejorar su confiabilidad. La reconfiguración de una red dedistribución es un proceso que altera las estructuras topológicas de los alimentadores, cambiando el estado deapertura/cierre de los seccionadores e interruptores, bajo condiciones de operación normal, los objetivos sondisminuir las pérdidas del sistema. En el presente artículo se tiene como objetivos presentar el concepto dereconfiguración de sistemas de distribución y describir dos metodologías de reconfiguración para la reducción depérdidas de potencia. Se realizará un análisis de las ventajas y desventajas de cada uno de los métodos.The increasing dependence on electrical energy consumption for various human activities, has resulted in the usersdemand higher quality of service for that reason supplying companies worldwide seeking to improve operationalschemes of distribution networks primary with distributing electric power to improve its reliability. The reconfigurationof a distribution network is a process that alters the topological structures of the feeders, changing the state ofopening / closing of breakers and switches, under normal operating conditions, the objectives are to reduce systemlosses.In the present article aims to introduce the concept of reconfiguration of distribution systems and describe twomethods for reconfiguration to reduce power losses. An analysis of the advantages and disadvantages of eachmethod.

  8. Complex Systems

    Directory of Open Access Journals (Sweden)

    Yi Zhao

    2012-01-01

    Full Text Available Quantum instanton (QI approximation is recently proposed for the evaluations of the chemical reaction rate constants with use of full dimensional potential energy surfaces. Its strategy is to use the instanton mechanism and to approximate time-dependent quantum dynamics to the imaginary time propagation of the quantities of partition function. It thus incorporates the properties of the instanton idea and the quantum effect of partition function and can be applied to chemical reactions of complex systems. In this paper, we present the QI approach and its applications to several complex systems mainly done by us. The concrete systems include, (1 the reaction of H+CH4→H2+CH3, (2 the reaction of H+SiH4→H2+SiH3, (3 H diffusion on Ni(100 surface; and (4 surface-subsurface transport and interior migration for H/Ni. Available experimental and other theoretical data are also presented for the purpose of comparison.

  9. Color uniformity in spotligths - visual perception and system design

    OpenAIRE

    Teupner, Anne

    2015-01-01

    La iluminación con diodos emisores de luz (LED) está reemplazando cada vez en mayor medida a las fuentes de luz tradicionales. La iluminación LED ofrece ventajas en eficiencia, consumo de energía, diseño, tamaño y calidad de la luz. Durante más de 50 años, los investigadores han estado trabajando en mejoras LED. Su principal relevancia para la iluminación está aumentando rápidamente. Esta tesis se centra en un campo de aplicación importante, como son los focos. Se utilizan para enfocar la luz...

  10. Dynamical systems

    CERN Document Server

    Birkhoff, George D

    1927-01-01

    His research in dynamics constitutes the middle period of Birkhoff's scientific career, that of maturity and greatest power. -Yearbook of the American Philosophical Society The author's great book€¦is well known to all, and the diverse active modern developments in mathematics which have been inspired by this volume bear the most eloquent testimony to its quality and influence. -Zentralblatt MATH In 1927, G. D. Birkhoff wrote a remarkable treatise on the theory of dynamical systems that would inspire many later mathematicians to do great work. To a large extent, Birkhoff was writing about his o

  11. Videobasierte Systeme

    Science.gov (United States)

    Knoll, Peter

    Videosensoren spielen für Fahrerassistenz systeme eine zentrale Rolle, da sie die Interpretation visueller Informationen (Objektklassifikation) gezielt unterstützen. Im Heckbereich kann die Video sensorik in der einfachsten Variante die ultraschallbasierte Einparkhilfe bei Einpark- und Rangiervorgängen unterstützen. Beim Nachtsichtsystem NightVision wird das mit Infrarotlicht angestrahlte Umfeld vor dem Fahrzeug mit einer Frontkamera aufgenommen und im Fahrzeugcockpit auf einem Display dem Fahrer angezeigt (s. Nachtsichtsysteme). Andere Fahrerassistenzsysteme verarbeiten die Videosignale und generieren daraus gezielt Informationen, die für eigenständige Funktionen (z. B. Spurverlassenswarner) oder aber als Zusatzinformation für andere Funktionen ausgewertet werden (Sensordatenfusion).

  12. Linear systems

    CERN Document Server

    Bourlès, Henri

    2013-01-01

    Linear systems have all the necessary elements (modeling, identification, analysis and control), from an educational point of view, to help us understand the discipline of automation and apply it efficiently. This book is progressive and organized in such a way that different levels of readership are possible. It is addressed both to beginners and those with a good understanding of automation wishing to enhance their knowledge on the subject. The theory is rigorously developed and illustrated by numerous examples which can be reproduced with the help of appropriate computation software. 60 exe

  13. Nuclear systems

    CERN Document Server

    Todreas, Neil E

    2011-01-01

    Principal Characteristics of Power ReactorsIntroductionPower CyclesPrimary Coolant SystemsReactor CoresFuel AssembliesAdvanced Water- and Gas-Cooled Reactors (Generation III And III+)Advanced Thermal and Fast Neutron Spectrum Reactors (Generation IV)ReferencesProblemsThermal Design Principles and ApplicationIntroductionOverall Plant Characteristics Influenced by Thermal Hydraulic ConsiderationsEnergy Production and Transfer ParametersThermal Design LimitsThermal Design MarginFigures of Merit for Core Thermal PerformanceThe Inverted Fuel ArrayThe Equivalent Annulus ApproximationReferencesProble

  14. Sterilization System

    Science.gov (United States)

    1990-01-01

    Cox Sterile Products, Inc.'s Rapid Heat Transfer Sterilizer employs a heat exchange process that induces rapid air movement; the air becomes the heat transfer medium, maintaining a uniform temperature of 375 degrees Fahrenheit. It features pushbutton controls for three timing cycles for different instrument loads, a six-minute cycle for standard unpackaged instruments, eight minutes for certain specialized dental/medical instruments and 12 minutes for packaged instruments which can then be stored in a drawer in sterile condition. System will stay at 375 degrees all day. Continuous operation is not expensive because of the sterilizer's very low power requirements.

  15. Bearing system

    Science.gov (United States)

    Kapich, Davorin D.

    1987-01-01

    A bearing system includes backup bearings for supporting a rotating shaft upon failure of primary bearings. In the preferred embodiment, the backup bearings are rolling element bearings having their rolling elements disposed out of contact with their associated respective inner races during normal functioning of the primary bearings. Displacement detection sensors are provided for detecting displacement of the shaft upon failure of the primary bearings. Upon detection of the failure of the primary bearings, the rolling elements and inner races of the backup bearings are brought into mutual contact by axial displacement of the shaft.

  16. EVOLUCIÓN HISTÓRICA Y TÁCTICA DE LOS SISTEMAS DE JUEGO DEFENSIVOS EN BALONMANO EN SITUACIONES DE DESIGUALDAD NUMÉRICA [Tactical and historical evolution of defensive play system in hadball in situations of numerical inequality] Tactical and historical evolution of defensive play system in hadball in situations of numerical inequality

    Directory of Open Access Journals (Sweden)

    Roberto Cejuela Anta

    2012-06-01

    Full Text Available El presente artículo tiene por objeto establecer las pautas evolutivas que desde el punto de vista físico, técnico, táctico y antropométrico han sufrido los Sistemas de Juego Defensivos en situaciones de desigualdad numérica.Desde los orígenes del Balonmano a 7, en el primer tercio del siglo XX, el reglamento ha contemplado la posibilidad de excluir a uno o varios jugadores por periodos de dos minutos, lo cual supone que estas situaciones de desigualdad numérica son consustanciales a la propia esencia del juego.Las distintas posibilidades que ofrecen dos estructuras tan antagónicas como lo son el defender con clara ventaja o desventaja (en función, claro está, de si la/s exclusión/es la ha sufrido nuestro equipo o el equipo contrario, nos sitúan ante una amplísima amalgama de variables tácticas.Palabras Claves: Balonmano, Sistema de Juego Defensivo, Inferioridad Numérica, Superioridad Numérica, Táctica.This article has as its main aim to establish the evolutionary guidelines that Defensive Game Systems have undergone from a physical, technical, tactical and anthropometrical approach in situations of numerical inequality.From the origins of Handball (7 in the first third of the twentieth (20th Century the regulation has considered the possibility to exclude one or more players for periods of two minutes, which means that these situations of numerical inequality are something inherent in the own essence of game.The different possibilities which are offered by such a antagonistic structures as depending with a clear advantage or with a disadvantage (obviously on the fact that exclusions have taken place in our team or in the opposing team present us a wide variety of tactical variables.Key Words: Handball, System of Defensive Game, Numerical Inferiority, Numerical Superiority, Tactical.

  17. Expert Systems: What Is an Expert System?

    Science.gov (United States)

    Duval, Beverly K.; Main, Linda

    1994-01-01

    Describes expert systems and discusses their use in libraries. Highlights include parts of an expert system; expert system shells; an example of how to build an expert system; a bibliography of 34 sources of information on expert systems in libraries; and a list of 10 expert system shells used in libraries. (Contains five references.) (LRW)

  18. Booking System

    OpenAIRE

    Jersák, Jan

    2007-01-01

    Cílem studie je definovat možné směry dalšího vývoje nové aplikace pro potřeby cestovního ruchu, online rezervačního systému Booking System. Tohoto cíle je dosaženo jednak zkoumáním dosavadního vývoje aplikace a zásadních inovací, které přináší, a dále analýzou socioekonomického prostředí a konkurenčních služeb.

  19. Posting system

    International Nuclear Information System (INIS)

    Hackney, S.

    1983-01-01

    A system for posting hazardous materials into and out of an enclosure, such as a glovebox, through a port in a wall of the enclosure. The port is normally closed by a door which cooperates with a removable end closure, on a container or the like when the latter is presented to and secured at the port. The container is secured in position at the port by means of a rotatable coupling ring. A single interlock ensures that the door cannot be opened in the absence of a container at the port and also that the container cannot be removed from the port when the door is open. In place of the container, a glove secured to a rigid sleeve may be used to enable the operator to perform a work function within the glovebox. (author)

  20. Systemic Planning

    DEFF Research Database (Denmark)

    Leleur, Steen

    This book presents principles and methodology for planning in a complex world. It sets out a so-called systemic approach to planning, among other things, by applying “hard” and “soft” methodologies and methods in combination. The book is written for Ph.D and graduate students in engineering......, business and other fields, and it is useful for all professionals, across a wide range of employment areas, who share an interest in renewing planning practice. Such an endeavour is seen as both important and timely, recognising that many complex planning tasks necessitate organisations – be they public...... or private – to engage in planning to prepare proactive decision-making....

  1. Nonlinear systems

    CERN Document Server

    Palmero, Faustino; Lemos, M; Sánchez-Rey, Bernardo; Casado-Pascual, Jesús

    2018-01-01

    This book presents an overview of the most recent advances in nonlinear science. It provides a unified view of nonlinear properties in many different systems and highlights many  new developments. While volume 1 concentrates on mathematical theory and computational techniques and challenges, which are essential for the study of nonlinear science, this second volume deals with nonlinear excitations in several fields. These excitations can be localized and transport energy and matter in the form of breathers, solitons, kinks or quodons with very different characteristics, which are discussed in the book. They can also transport electric charge, in which case they are known as polarobreathers or solectrons. Nonlinear excitations can influence function and structure in biology, as for example, protein folding. In crystals and other condensed matter, they can modify transport properties, reaction kinetics and interact with defects. There are also engineering applications in electric lattices, Josephson junction a...

  2. Posting system

    International Nuclear Information System (INIS)

    Jones, E.L.

    1983-01-01

    A posting system for the movement of equipment, such as a manipulator, into and out of an enclosure e.g. a cell or glovebox, for toxic or radioactive materials has the manipulator arranged within a collapsible bellows-like container with an end of the container cooperating with a port entry to the enclosure. The collapsible container isolates the manipulator from the environment outside the enclosure and allows the manipulator to enter and leave the contaminated enclosure without breach of the containment. A particular construction of cell for use with radioactive material is described, having a thick wall of shielding material such as concrete provided with a door normally closed by a Pb shutter and having a cylindrical gamma shield block located over the shutter on the exterior of the wall. (author)

  3. RECURSOS TECNOLÓGICOS AUDIOVISUALES DE FORMACIÓN EN RED: SISTEMAS STREAMING MEDIA Y TELEINMERSIVOS TECHNOLOGICAL RESOURCES FOR ON-LINE INSTRUCTION: STREAMING MEDIA AND TELEIMMERSION SYSTEMS

    Directory of Open Access Journals (Sweden)

    Juan Antonio Juanes Méndez

    2010-06-01

    Full Text Available Presentamos dos modalidades tecnológicas de enseñanza en red: la consolidada y ampliamente utilizada tecnología video-streaming, y el futuro de la comunicación a distancia, la teleinmersión. La primera permite la transmisión de audio/vídeo por la red para que puede ser vista por el usuario en su ordenador personal, desde cualquier lugar que disponga de una conexión a red. La información será recibida y decodificada por el usuario final utilizando cualquier reproductor de los que existen en el mercado. La teleinmersión, por su parte, permite crear espacios virtuales de colaboración entre profesionales, ofreciendo entornos muy cercanos a la realidad. Esta tecnología revolucionará, sin duda, nuestros sistemas de enseñanza en los próximos años, facilitando la interacción profesor-alumno. Es evidente que la formación e-learning aporta a los alumnos y a los docentes grandes ventajas como: menores tiempos de aprendizaje, flexibilidad de horarios y de ubicación geográfica, entre otras. We describe two technological modes of on-line teaching: the consolidated and widely used video-streaming mode and teleimmersion, the future of distance communications. The former mode allows the transmission of audio/video through the network so that it can be seen by the user on a PC from anywhere harbouring a network connection. The information is received and decoded by the final user using any reproducer available on the market. Teleimmersion allows the creation of virtual spaces for collaboration among professionals, offering venues that are very similar to reality. This technology will undoubtedly revolutionize our teaching systems in the near future, facilitating instructor-student interaction. It is clear that e-learning- instruction offers both students and instructors huge advantages, such as shorter learning times and schedule and geographic flexibility, among others.

  4. Systems engineering simplified

    CERN Document Server

    Cloutier, Robert; Bone, Mary Alice

    2015-01-01

    IntroductionOverviewDiscussion of Common TerminologyThe Case for Systems EngineeringA Brief History of Systems EngineeringSystem ExamplesSummaryThe System Life CycleManaging System Development-The Vee ModelSystem ProductionSystem Utilization and SupportSystem Retirement and DisposalOther Systems Engineering Development ModelsSpiral ModelAgile Model for Systems EngineeringSystem of InterestAbstraction and DecompositionIntegrationDeveloping and Managing RequirementsCyclone Requiremen

  5. Chem systems

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This paper reports that world styrene demand, paced by a near doubling of combined requirements in East Asia and Oceania, could reach 19.3 million metric tons by 2000, an average growth rate of 3.7%/year. So concludes Chem Systems Inc., Tarrytown, N.Y., in a study of world styrene markets through the end of the century. Pacific Rim styrene production and consumption throughout the 1990s are predicted to make up increasingly larger shares of world markets, while demand and production lag in the U.S. and western Europe. Demand and capacity in other parts of the world will grow in real terms, increasing combined market shares only slightly. Most of the increase will be driven by demand in East Asia and Oceania, where consumption by century's end is expected to increase 4.48 million metric tons from 2.25 million tons in 1991. Meantime, Japan's styrene demand in 2000 is projected at 2.64 million tons, a 500,000 ton increase from 1991 demand but a net market loss of 1.9%

  6. New Systems Produced by Systemic Change

    Science.gov (United States)

    Battino, Wendy; Clem, Jo; Caine, Renate N.; Reigeluth, Charles M.; Chapman, Carrie; Flinders, David J.; Malopinsky, Larissa V.

    2006-01-01

    This article presents new systems produced by systemic change. First is Systemic Changes in the Chugach School District by Wendy Battino and Jo Clem. Second is Systemic Changes in Public Schools through Brain-Based Learning by Renate N. Caine. Third is A Vision of an Information-Age Educational System by Charles M. Reigeluth. Fourth is Systemic…

  7. Analysis of availability, functional integration and remote maintenance for the design of critical components and systems in nuclear fusion technology

    OpenAIRE

    Fernández Berceruelo, Iván

    2016-01-01

    Junto a las conocidas ventajas de la Fusión Nuclear frente a otras tecnologías energéticas: seguridad inherente por principio físico, gestión del impacto ambiental y disponibilidad a largo plazo de combustibles primarios (deuterio, litio), la competitividad de la energía generada por fusión determinará su capacidad de penetración en el mercado. Para lograrla será necesario revisar rigurosamente las opciones de diseño existentes, de modo que se justifique sólidamente la elección de una solució...

  8. System safety education focused on system management

    Science.gov (United States)

    Grose, V. L.

    1971-01-01

    System safety is defined and characteristics of the system are outlined. Some of the principle characteristics include role of humans in hazard analysis, clear language for input and output, system interdependence, self containment, and parallel analysis of elements.

  9. Airport Information Retrieval System (AIRS) System Design

    Science.gov (United States)

    1974-07-01

    This report presents the system design for a prototype air traffic flow control automation system developed for the FAA's Systems Command Center. The design was directed toward the immediate automation of airport data for use in traffic load predicti...

  10. Systems Biology and Health Systems Complexity in;

    NARCIS (Netherlands)

    Donald Combs, C.; Barham, S.R.; Sloot, P.M.A.

    2016-01-01

    Systems biology addresses interactions in biological systems at different scales of biological organization, from the molecular to the cellular, organ, organism, societal, and ecosystem levels. This chapter expands on the concept of systems biology, explores its implications for individual patients

  11. Variability and Evolution in Systems of Systems

    Directory of Open Access Journals (Sweden)

    Goetz Botterweck

    2013-11-01

    Full Text Available In this position paper (1 we discuss two particular aspects of Systems of Systems, i.e., variability and evolution. (2 We argue that concepts from Product Line Engineering and Software Evolution are relevant to Systems of Systems Engineering. (3 Conversely, concepts from Systems of Systems Engineering can be helpful in Product Line Engineering and Software Evolution. Hence, we argue that an exchange of concepts between the disciplines would be beneficial.

  12. System specifications for the NDS Dictionary System

    International Nuclear Information System (INIS)

    Attree, P.M.; Smith, P.M.

    1979-09-01

    The NDS Dictionary System is a computerized system for maintaining and distributing the EXFOR dictionaries and for preparing internal versions of these dictionaries for use in the NDS EXFOR System and other NDS systems. This document is an internal manual for the system specifications of the NDS Dictionary System. It includes flow charts, system and program summaries, input and output specifications and file and record descriptions. This manual is updated from time to time when system modifications are made; this is the version of January 1979

  13. System for the design of electrical distribution substations; Sistema para el diseno de subestaciones electricas de distribucion

    Energy Technology Data Exchange (ETDEWEB)

    Zayas Perez, Benjamin Eddie; Islas Perez, Eduardo; Bahena Rada, Jessica Liliana; Romero Lima, Jesus [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico); Sierra Rodriguez, Benjamin; Moreno Diaz, Humberto [Comision Federal de Electricidad (Mexico)

    2011-07-01

    The physical design of electric substations involves a variety of activities, such as developing, reviewing and performing modifications to different design proposals, estimating costs and producing documents to be integrated into an executive project. These activities are usually conducted at the Distribution Divisions of the Federal Electric Commission (CFE) through two separate processes: the development of engineering plans with computer-aided design software (CAD) and volumetric calculations for the initial budget using conventional spreadsheets. The documents are manually developed on an individual basis, without the existence of any functions to allow for automatically updating the design modifications of any of the plans. The corresponding initial budget becomes a lengthy and laborious process with the likelihood of inconsistencies among the documents. In order to optimize the design process for the public and electromechanical works of electric substations (ES) in a three-dimensional (3D) graphic environment, the IIE's Management of Process Supervision, in coordination with the CFE Distribution Subdivision, developed the System for the Design of Electric Substation Distribution (SDESD). This system makes use of the advantages of CAD3D technology to develop detail engineering, cost engineering to calculate initial budgets and virtual reality for three-dimensional interactive navigation. It is worth mentioning that this system is currently in the implementation phase at the CFE Distribution Subdivision. This article briefly describes the main stages in the development of the project, as well as the functioning and principal components of the system. [Spanish] El diseno fisico de subestaciones electricas implica una variedad de actividades, tales como elaborar, revisar y efectuar modificaciones de diferentes propuestas de diseno, estimar costos y producir documentos, para integrarlos como parte de un proyecto ejecutivo. Estas actividades usualmente se

  14. Development of a microwave dielectric spectroscopy system for materials characterization using the open-ended coaxial probe technique

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Ruiz, I.; Aviles-Castro, D. [Centro Nacional de Metrologia, Queretaro (Mexico); Jardon-Aguilar, H. [Instituto Politecnico Nacional, Mexico, D. F. (Mexico)

    2001-02-01

    Dielectric spectroscopy is a measurement technique to characterize the interaction between electromagnetic energy and macroscopic samples as a function of frequency. It is based on the measurement of complex permittivity plus conductivity and it has shown to be very useful to provide information about internal structure of matter. It has some advantages over others like optical or chemical analysis: it is very fast, easy to implement, requires little or no preparation of the sample, it can be non-destructive and/or minimally intrusive. In this paper the development of a dielectric spectroscopy system for the microwave frequency range (50 MHz-20 GHz), using an open-ended coaxial probe as sensor, is described. The complete system includes a vector network analyzer, a microwave coaxial cable, the probe, a sample holder and a computer to automate measurements and further data processing. This system has been used to measure some liquid and solid materials such as alcohol, water and Teflon. The real and imaginary parts of permittivity as function of frequency, for several sugarcane alcohol and deionised water mixtures, tequilas and Teflon samples are given. Measurement repeatability and accuracy considerations were taken and it was identified that uncertainty of reference standards and system repeatability are the most important error sources. Also, it was found that open-ended coaxial probe technique is appropriate for measuring not only liquids but also solid materials. Some of the obtained results were compared to those reported in literature and good convergence was observed. [Spanish] La espectroscopia dielectrica es una tecnica moderna de medicion para caracterizar la interaccion entre la energia electromagnetica y muestras macroscopicas como funcion de la frecuencia. Esta tecnica se basa en la medicion de la permitividad compleja y conductividad de los materiales y ha mostrado ser muy util para proporcionar informacion sobre la estructura interna de estos. Tiene

  15. Algoritmo Heurístico para la Reconfiguración de Sistemas de Distribución Mediante Intercambio de Ramas; Heuristic Algorithm for Distribution Systems Reconfiguration By Means of Branches Exchange

    Directory of Open Access Journals (Sweden)

    José Angel González Quintero

    2012-11-01

    Full Text Available La reconfiguración de la red de distribución es también parte de la operación de los sistemas eléctricos de potencia. El problema de reconfiguración de la red de distribución, conocido en la literatura como DNRC (Distribution Network Reconfiguration, es encontrar una estructura de operación radial que minimice las pérdidas de potencia del sistema satisfaciendo las restricciones de operación. Este trabajo presenta un algoritmo heurístico basado en el método de intercambio de rama simple. La ventaja de este método radica enque es fácil de programar y poner en práctica por su simplicidad para producir siempre variantes radiales. Procediendo de esta manera se evitan las demoras de los chequeos de radialidad que realizan otras implementaciones del algoritmo. La desventaja fundamental consiste en que la solución obtenida es un óptimo local que no necesariamente tiene que ser el óptimo global. Un ejemplo numérico se emplea para explicar los pasos fundamentales de la metodología propuesta.  The reconfiguration of the distribution net is also part of the operation of the electric systems of power. The problem of reconfiguration of the distribution net, well-known in the literature like DNRC (Distribution NetworkReconfiguration, it is to find a structure of radial operation that minimizes the power system losses while satisfying the operation restrictions. This work presents a heuristic algorithm based on the simple branch exchange method. The advantage of this method resides in its easy understanding and its simplicity to always produce radial variants. Coming this way the delays of the radiality checkups that carry out other algorithms areavoided. The main disadvantage consists in that the obtained solution is a local optimum that not necessarily has to be the global optimum. A numeric example is used to explain the fundamental steps of the roposedmethodology.

  16. Una propuesta para el diagnóstico de fallos en sistemas industriales mediante el uso de estrategias bioinspiradas A proposal to fault diagnosis in industrial systems using bio-inspired strategies

    Directory of Open Access Journals (Sweden)

    Lídice Camps Echevarría

    2011-08-01

    Full Text Available In this work a study on the application of bio-inspired strategies for optimization to Fault Diagnosis in industrial systems is presented. The principal aim is to establish a basis for the development of new and viable model-based Fault Diagnosis Methods which improve some difficulties that the current methods cannot avoid. These difficulties are related mainly with fault sensitivity and robustness to external disturbances. In this study, there have been considered the Differential Evolution and the Ant Colony Optimization algorithms. This application is illustrated using simulated data of the Two tanks system benchmark. In order to analyze the advantages of these algorithms to obtain a diagnosis which needs to be sensitive to faults and robust to external disturbances, some experiments with incipient faults and noisy data have been simulated. The results indicate that the proposed approach, basically the combination of the two algorithms, characterizes a promising methodology for Fault Diagnosis.En el presente trabajo se presenta un estudio sobre la aplicación de estrategias bioinspiradas para la optimización al diagnóstico de fallos en sistemas industriales. El objetivo principal es establecer una base para el desarrollo de nuevos y viables métodos de diagnóstico de fallos basados en modelos que permitan mejorar las dificultades de los métodos actuales. Estas dificultades están relacionadas, fundamentalmente, con la sensibilidad ante la presencia de fallos y la robustez ante perturbaciones externas. En el estudio se consideraron los algoritmos Evolución Diferencial y Optimización por Colonia de Hormigas. La efectividad de la propuesta es analizada mediante experimentos con el conocido problema de prueba de los dos tanques. Los experimentos consideraron presencia de ruido en la información y fallos incipientes de manera que fuera posible analizar las ventajas de la propuesta en cuanto a diagnóstico robusto y sensible. Los resultados

  17. Release of alkali salts and coal volatiles affecting internal components in fluidized bed combustion systems

    Directory of Open Access Journals (Sweden)

    Arias del Campo, E.

    2003-12-01

    Full Text Available In spite of the potential advantages of atmospheric fluidized bed systems, experience has proved that, under certain environments and operating conditions, a given material employed for internal components could lead to catastrophic events. In this study, an attempt is made to establish material selection and operational criteria that optimize performance and availability based on theoretical considerations of the bed hydrodynamics, thermodynamics and combustion process. The theoretical results may indicate that, for high-volatile coals with particle diameters (dc of 1-3 mm and sand particle size (ds of 0.674 mm, a considerable proportion of alkali chlorides may be transferred into the freeboard region of fluidized bed combustors as vapor phase, at bed temperatures (Tb < 840 °C, excess air (XSA ≤ 20 %, static bed height (Hs ≤ 0.2 m and fluidizing velocity (Uo < 1 m/s. Under these operating conditions, a high alkali deposition may be expected to occur in heat exchange tubes located above the bed. Conversely, when the combustors operate at Tb > 890 °C and XSA > 30 %, a high oxidation rate of the in-bed tubes may be present. Nevertheless, for these higher Tb values and XSA < 10 %, corrosion attack of metallic components, via sulfidation, would occur since the excessive gas-phase combustion within the bed induced a local oxygen depletion.

    A pesar de las ventajas potenciales de los sistemas atmosféricos de lecho fluidizado, la experiencia ha demostrado que, bajo ciertas atmósferas y condiciones de operación, un material que se emplea como componente interno podría experimentar una falla y conducir a eventos catastróficos. En este estudio, se intenta establecer un criterio tanto operativo como de selección del material que permita optimizar su disponibilidad y funcionalidad basados en consideraciones teóricas de la hidrodinámica del lecho, la termodin

  18. Quality management system

    International Nuclear Information System (INIS)

    Lee, Mu Sung

    2009-08-01

    This book deals with ISO9001 quality management system which includes summary of this system such as classification of quality, principle of quality management, and definition, requirement and procedure of quality management system, introduction of ISO9001 system like model of ISO9001 quality management system, ISO certificate system, structure of ISO9001 standard, requirement of ISO9001 quality management system, process approach and documentation of system, propel cases of ISO9001 quality management system.

  19. Protecting Information in Systems of Systems

    NARCIS (Netherlands)

    Trivellato, Daniel; Zannone, Nicola; Etalle, Sandro

    2011-01-01

    Systems of Systems (SoS) are dynamic, distributed coalitions of autonomous and heterogeneous systems that collaborate to achieve a common goal. While offering several advantages in terms of scalability and flexibility, the SoS paradigm has a strong impact on system interoperability and on the

  20. Networked control of microgrid system of systems

    Science.gov (United States)

    Mahmoud, Magdi S.; Rahman, Mohamed Saif Ur; AL-Sunni, Fouad M.

    2016-08-01

    The microgrid has made its mark in distributed generation and has attracted widespread research. However, microgrid is a complex system which needs to be viewed from an intelligent system of systems perspective. In this paper, a network control system of systems is designed for the islanded microgrid system consisting of three distributed generation units as three subsystems supplying a load. The controller stabilises the microgrid system in the presence of communication infractions such as packet dropouts and delays. Simulation results are included to elucidate the effectiveness of the proposed control strategy.

  1. Calculation of sensitivities in electrical systems with SIFLETCA devices; Calculo de sensibilidades en sistemas electricos con dispositivos SIFLETCA

    Energy Technology Data Exchange (ETDEWEB)

    Rubio Marroquin, Gabriel Omar

    2004-03-15

    With the purpose of avoiding the installation of new transmission lines, some researches have proposed the installation of SIFLETCA devices. Therefore in this thesis, different models in steady state of diverse SIFLETCA devices are described, such as: compensator variable series (VSC), static compensator of VArs (SCV), transformer phase shifter (TPS), transformer with changer under load (TWCL) and the universal controller of power flows (UCPF). In addition, it is developed in this thesis the equations used in the Jacobean of the method Newton-Raphson, to solve power flows including SIFLETCA devices. The different applications that are obtained when installing a device, such as prevention of flows in ring, electronic barrier, increment in the transmission capacity and specification of the power flow in transmission lines. On the other hand in the thesis, an analysis of sensitivities of a power system in steady state is developed. Also the control parameters are proposed in the thesis for which the sensitivities are calculated. Also, a performance index is used to measure the degree of congestion of an electrical system. In calculating the sensitivities the obtained results of the power flows are utilized. Four electrical networks are used to find where each SIFLETCA device must be located to reduce the congestion in the system. Also, the method developed in the thesis is compared with a method of sensitivities that uses DC flows, for validation and to show the advantages of using the Newton method in power flows. [Spanish] Con el fin de evitar instalar nuevas lineas de transmision, algunos investigadores han propuesto la instalacion de los dispositivos SIFLETCA. Por lo tanto en esta tesis, se describe diferentes modelos en estado estacionario de diversos dispositivos SIFLETCA, siendo: compensador serie variable (CSV), compensador estatico de VArs (CEV), transformador desfasador (TD), transformador con cambiador bajo carga (TTC) y el controlador universal de flujos

  2. System design specification Brayton Isotope Power System (BIPS) Flight System (FS), and Ground Demonstration System (GDS)

    International Nuclear Information System (INIS)

    1976-01-01

    The system design specification for ground demonstration, development, and flight qualification of a Brayton Isotope Power System (BIPS) is presented. The requirements for both a BIPS conceptual Flight System (FS) and a Ground Demonstration System (GDS) are defined

  3. Situation awareness with systems of systems

    CERN Document Server

    Tretmans, Jan; Borth, Michael

    2013-01-01

    This book discusses various aspects, challenges, and solutions for developing systems-of-systems for situation awareness, using applications in the domain of maritime safety and security.  Topics include advanced, multi-objective visualization methods for situation awareness, stochastic outlier selection, rule-based anomaly detection, an ontology-based event model for semantic reasoning, new methods for semi-automatic generation of adapters bridging communication gaps, security policies for systems-of-systems, trust assessment, and methods to deal with the dynamics of systems-of-systems in run-time monitoring, testing, and diagnosis. Architectural considerations for designing information-centric systems-of-systems such as situation awareness systems, and an integrated demonstrator implementing many of the investigated aspects, complete the book.

  4. Computer System Design System-on-Chip

    CERN Document Server

    Flynn, Michael J

    2011-01-01

    The next generation of computer system designers will be less concerned about details of processors and memories, and more concerned about the elements of a system tailored to particular applications. These designers will have a fundamental knowledge of processors and other elements in the system, but the success of their design will depend on the skills in making system-level tradeoffs that optimize the cost, performance and other attributes to meet application requirements. This book provides a new treatment of computer system design, particularly for System-on-Chip (SOC), which addresses th

  5. Nonapeptidergic systems in the brain of the mouse. Mapping the distribution of vasopressin and oxytocin in the social and maternal brain = Sistemas nonapeptidérgicos en el encéfalo del ratón: cartografiando la distribución de vasopresina y oxitocina en el cerebro social y maternal

    OpenAIRE

    Otero García, Marcos

    2015-01-01

    1. INTRODUCCIÓN 1.1. El comportamiento social El comportamiento social se define como el conjunto de interacciones que ocurren entre dos o más individuos de una misma especie. Presumiblemente, los comportamientos sociales evolucionaron al suponer una ventaja selectiva para los individuos que los practicaban. Por ejemplo, interacciones cooperativas pueden ayudar en la búsqueda de alimento, incrementar la protección contra depredadores o facilitar los desplazamientos y la cría. Las esp...

  6. Smart electromechanical systems the central nervous system

    CERN Document Server

    Kurbanov, Vugar

    2017-01-01

    This book describes approaches to solving the problems of developing the central nervous system of robots (CNSR) based on smart electromechanical systems (SEMS) modules, principles of construction of the various modules of the central nervous system and variants of mathematical software CNSR in control systems for intelligent robots. It presents the latest advances in theory and practice at the Russian Academy of Sciences. Developers of intelligent robots to solve modern problems in robotics are increasingly addressing the use of the bionic approach to create robots that mimic the complexity and adaptability of biological systems. These have smart electromechanical system (SEMS), which are used in various cyber-physical systems (CPhS), and allow the functions of calculation, control, communications, information storage, monitoring, measurement and control of parameters and environmental parameters to be integrated. The behavior of such systems is based on the information received from the central nervous syst...

  7. Linking Political Systems and War Systems

    DEFF Research Database (Denmark)

    Harste, Gorm

    2009-01-01

    military coercion to be the appropriate mean. Using the system theory and the theory of systemic risks displayed by the German sociologist Niklas Luhmann the article demonstrates how military systems due to their own autonomy and autopoiesis do not fit into the idea of political government......Decisive parts of the Western political system have demonstrated a seemingly surprising misinterpretation of military might. As Madelaine Albright has suggested, the mighty perceived themselves as "almighty". Political power seems to have invested in instrumental coercive power relations and found....... The Clausewitzian ideal of a political system that could continue its power games by means of war was moderated by Clausewitz' own analysis of "friction". How can a political system be so blind towards the possibilities of another system? What are the risks of systemic blind spots? The argument of the paper...

  8. Situation Awareness with Systems of Systems

    NARCIS (Netherlands)

    Laar, P. van de; Tretmans, J.; Borth, M.

    2013-01-01

    This book discusses various aspects, challenges, and solutions for developing systems-of-systems for situation awareness, using applications in the domain of maritime safety and security. Topics include advanced, multi-objective visualization methods for situation awareness, stochastic outlier

  9. Designing information systems

    CERN Document Server

    Blethyn, Stanley G

    2014-01-01

    Designing Information Systems focuses on the processes, methodologies, and approaches involved in designing information systems. The book first describes systems, management and control, and how to design information systems. Discussions focus on documents produced from the functional construction function, users, operators, analysts, programmers and others, process management and control, levels of management, open systems, design of management information systems, and business system description, partitioning, and leveling. The text then takes a look at functional specification and functiona

  10. Triggering system innovation in agricultural innovation systems

    NARCIS (Netherlands)

    Turner, James A.; Williams, Tracy; Nicholas, Graeme; Foote, Jeff; Rijswijk, Kelly; Barnard, Tim; Beechener, Sam; Horita, Akiko

    2017-01-01

    This article describes a process for stimulating engagement among change agents to develop a shared understanding of systemic problems in the agricultural innovation system (AIS), challenge prevalent institutional logics and identify actions they might undertake to stimulate system innovation.

  11. Expert systems in process control systems

    International Nuclear Information System (INIS)

    Wittig, T.

    1987-01-01

    To illustrate where the fundamental difference between expert systems in classical diagnosis and in industrial control lie, the work of process control instrumentation is used as an example for the job of expert systems. Starting from the general process of problem-solving, two classes of expert systems can be defined accordingly. (orig.) [de

  12. System Design of the SWRL Financial System.

    Science.gov (United States)

    Ikeda, Masumi

    To produce various management and accounting reports in order to maintain control of SWRL (Southwest Regional Laboratory) operational and financial activities, a computer-based SWRL financial system was developed. The system design is outlined, and various types of system inputs described. The kinds of management and accounting reports generated…

  13. Modeling learning technology systems as business systems

    NARCIS (Netherlands)

    Avgeriou, Paris; Retalis, Symeon; Papaspyrou, Nikolaos

    2003-01-01

    The design of Learning Technology Systems, and the Software Systems that support them, is largely conducted on an intuitive, ad hoc basis, thus resulting in inefficient systems that defectively support the learning process. There is now justifiable, increasing effort in formalizing the engineering

  14. Expert Systems for auditing management information systems

    Directory of Open Access Journals (Sweden)

    Gheroghe Popescu

    2007-05-01

    Full Text Available Expert systems are built with the help of: specialised programming languages or expert system generators (shell. But this structure was reached after tens of years of work and research, because expert systems are nothing but pragmatic capitalisation of the results of research carried out in artificial intelligence and theory of knowledge.

  15. General Systems Theory and Instructional Systems Design.

    Science.gov (United States)

    Salisbury, David F.

    1990-01-01

    Describes basic concepts in the field of general systems theory (GST) and identifies commonalities that exist between GST and instructional systems design (ISD). Models and diagrams that depict system elements in ISD are presented, and two matrices that show how GST has been used in ISD literature are included. (11 references) (LRW)

  16. Optical system defect propagation in ABCD systems

    DEFF Research Database (Denmark)

    McKinley, W.G.; Yura, H.T.; Hanson, Steen Grüner

    1988-01-01

    We describe how optical system defects (tilt/jitter, decenter, and despace) propagate through an arbitrary paraxial optical system that can be described by an ABCD ray transfer matrix. A pedagogical example is given that demonstrates the effect of alignment errors on a typical optical system...

  17. Biomedical signals and systems

    CERN Document Server

    Tranquillo, Joseph V

    2013-01-01

    Biomedical Signals and Systems is meant to accompany a one-semester undergraduate signals and systems course. It may also serve as a quick-start for graduate students or faculty interested in how signals and systems techniques can be applied to living systems. The biological nature of the examples allows for systems thinking to be applied to electrical, mechanical, fluid, chemical, thermal and even optical systems. Each chapter focuses on a topic from classic signals and systems theory: System block diagrams, mathematical models, transforms, stability, feedback, system response, control, time

  18. Psychology of system design

    CERN Document Server

    Meister, D

    2014-01-01

    This is a book about systems, including: systems in which humans control machines; systems in which humans interact with humans and the machine component is relatively unimportant; systems which are heavily computerized and those that are not; and governmental, industrial, military and social systems. The book deals with both traditional systems like farming, fishing and the military, and with systems just now tentatively emerging, like the expert and the interactive computer system. The emphasis is on the system concept and its implications for analysis, design and evaluation of these many di

  19. Operating System Security

    CERN Document Server

    Jaeger, Trent

    2008-01-01

    Operating systems provide the fundamental mechanisms for securing computer processing. Since the 1960s, operating systems designers have explored how to build "secure" operating systems - operating systems whose mechanisms protect the system against a motivated adversary. Recently, the importance of ensuring such security has become a mainstream issue for all operating systems. In this book, we examine past research that outlines the requirements for a secure operating system and research that implements example systems that aim for such requirements. For system designs that aimed to

  20. Intrusion Detection Systems with Live Knowledge System

    Science.gov (United States)

    2016-05-31

    AFRL-AFOSR-JP-TR-2016-0058 Intrusion Detection Systems with Live Knowledge System Byeong Ho Kang UNIVERSITY OF TASMANIA Final Report 05/31/2016...COVERED (From - To) 20 May 2015 to 19 May 2016 4. TITLE AND SUBTITLE Intrusion Detection Systems with Live Knowledge System 5a.  CONTRACT NUMBER 5b...298 10/26/2016https://livelink.ebs.afrl.af.mil/livelink/llisapi.dll Final Report for AOARD Grant FA2386-15-1-4061 “ Intrusion Detection Systems with

  1. Systems Measures of Water Distribution System Resilience

    Energy Technology Data Exchange (ETDEWEB)

    Klise, Katherine A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Murray, Regan [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Walker, La Tonya Nicole [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-01-01

    Resilience is a concept that is being used increasingly to refer to the capacity of infrastructure systems to be prepared for and able to respond effectively and rapidly to hazardous events. In Section 2 of this report, drinking water hazards, resilience literature, and available resilience tools are presented. Broader definitions, attributes and methods for measuring resilience are presented in Section 3. In Section 4, quantitative systems performance measures for water distribution systems are presented. Finally, in Section 5, the performance measures and their relevance to measuring the resilience of water systems to hazards is discussed along with needed improvements to water distribution system modeling tools.

  2. Lighting system with thermal management system

    Science.gov (United States)

    Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

    2013-05-07

    Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

  3. Evaluation and tuning of control algorithms for power system stabilizers; Evaluacion y sintonizacion de algoritmos de control para el estabilizador de sistemas de potencia

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez Gonzalez, Miguel

    1998-08-01

    A procedure based on the phase compensation technique for tuning satisfactorily lead-lag power system stabilizers (PSS) is presented in this work. This procedure can be applied to standard models of PSS`s (with two phase compensation stages) where rotor speed deviation or an equivalent rotor speed signal is used as input. An analysis of several state of the art advanced control schemes is also presented, which are proposed for overcoming the limitations of conventional fixed parameters PSS`s. The advantages and drawbacks in designing certain types of PSS`s which are based on adaptive control, fuzzy logic and neural networks techniques are investigated. Based on this study, and taking into account the highly complex and non-linear nature of power systems, a fuzzy logic PSS is designed. In order to have good damping characteristics, speed deviation ({Delta}{omega}) of a machine and its acceleration ({Delta}{omega}) are chosen as the input signals to the fuzzy stabilizer of that particular machine. The performance of the lead-lag PSS and fuzzy stabilizer are validated through the simulation of two case studies: a single machine-infinite bus system, and a multimachine power system. All simulations were performed using a tool based on algorithms developed in MATLAB for the study of power system stability. [Espanol] Se presenta un procedimiento basado en la tecnica de compensacion de fase para ajustar en forma satisfactoria los parametros de los estabilizadores de sistemas de potencia (ESP) del tipo de adelanto-atraso. Este procedimiento es aplicable a modelos estandar de ESP`s (con dos redes de compensacion de fase) que utilizan como senal de entrada la velocidad del rotor del generador en cuestion, o una senal de velocidad equivalente. Por otra parte, se realiza un estudio de diversos esquemas de control avanzado del ESP que se proponen en la literatura actual para superar las limitantes de los estabilizadores convencionales. Basicamente, se analizan las ventajas y

  4. Automatic control systems engineering

    International Nuclear Information System (INIS)

    Shin, Yun Gi

    2004-01-01

    This book gives descriptions of automatic control for electrical electronics, which indicates history of automatic control, Laplace transform, block diagram and signal flow diagram, electrometer, linearization of system, space of situation, state space analysis of electric system, sensor, hydro controlling system, stability, time response of linear dynamic system, conception of root locus, procedure to draw root locus, frequency response, and design of control system.

  5. Root production method system

    Science.gov (United States)

    Wayne Lovelace

    2002-01-01

    The RPM system (Root Production Method) is a multistep production system of container tree production that places primary emphasis on the root system because the root system ultimately determines the tree's survival and performance in its outplanted environment. This particular container production system has been developed to facilitate volume production, in a...

  6. Collaborative Systems Testing

    Science.gov (United States)

    Pocatilu, Paul; Ciurea, Cristian

    2009-01-01

    Collaborative systems are widely used today in various activity fields. Their complexity is high and the development involves numerous resources and costs. Testing collaborative systems has a very important role for the systems' success. In this paper we present taxonomy of collaborative systems. The collaborative systems are classified in many…

  7. Systems Intelligence Inventory

    Science.gov (United States)

    Törmänen, Juha; Hämäläinen, Raimo P.; Saarinen, Esa

    2016-01-01

    Purpose: Systems intelligence (SI) (Saarinen and Hämäläinen, 2004) is a construct defined as a person's ability to act intelligently within complex systems involving interaction and feedback. SI relates to our ability to act in systems and reason about systems to adaptively carry out productive actions within and with respect to systems such as…

  8. Mapping biological systems to network systems

    CERN Document Server

    Rathore, Heena

    2016-01-01

    The book presents the challenges inherent in the paradigm shift of network systems from static to highly dynamic distributed systems – it proposes solutions that the symbiotic nature of biological systems can provide into altering networking systems to adapt to these changes. The author discuss how biological systems – which have the inherent capabilities of evolving, self-organizing, self-repairing and flourishing with time – are inspiring researchers to take opportunities from the biology domain and map them with the problems faced in network domain. The book revolves around the central idea of bio-inspired systems -- it begins by exploring why biology and computer network research are such a natural match. This is followed by presenting a broad overview of biologically inspired research in network systems -- it is classified by the biological field that inspired each topic and by the area of networking in which that topic lies. Each case elucidates how biological concepts have been most successfully ...

  9. Sistemas Integrados de Gestión Bibliotecaria: libres y de código abierto = Free/Open Source Integrated Library Systems

    OpenAIRE

    Parrado Prieto, José Ángel

    2012-01-01

    Informe sobre la situación actual de los Sistemas Integrados de Gestión Bibliotecaria libres o de código abierto. Se indican los distintos programas informáticos, las ventajas e inconvenientes de este modelo de desarrollo, cómo llevar a cabo una migración de sistemas y como combinar los distintos productos con otros como los OPACs sociales. También se comenta la situación en España: bibliotecas, empresas de soporte y proyectos

  10. LOS SISTEMAS DE INFORMACIÓN GEOGRÁFICA (SIG), UNA GRAN HERRAMIENTA PARA LA SILVICULTURA URBANA GEOGRAPHICAL INFORMATION SYSTEMS (GIS), A GREAT TOOL FOR URBAN SYLVICULTURE

    OpenAIRE

    Leodán Andrés Otaya Burbano; Robinson de Jesús Sánhez Zapata; León Morales Soto; Verónica Botero Fernández

    2006-01-01

    Como una fase piloto, para adquirir experiencia, definir metodologías y determinar las ventajas de los Sistemas de Información Geográfica (SIG) al ser aplicados en la Silvicultura Urbana, se realizó el inventario, diagnóstico, propuesta de manejo y valoración económica del Bosque Urbano del barrio La Magnolia del Municipio de Envigado, Departamento de Antioquia, Colombia. Para el manejo y análisis de los registros recolectados en campo, se diseñó una base de datos en el software Microsoft Acc...

  11. Information system model to support proactive environmental management in SME

    Directory of Open Access Journals (Sweden)

    Ismael Santiago Mejía S.

    2012-08-01

    Full Text Available Rev.esc.adm.neg En muchas empresas de manufactura, principalmente en las pequeñas y medianas (PYMES, la gestión ambiental se caracteriza por buscar sólo el cumplimiento de la normatividad ambiental. Sin embargo, se han propuesto conceptos como el de gestión ambiental proactiva (GAP. Según la teoría de la Visión Basada en Recursos Naturales (NRBV, la GAP es una compleja coordinación de recursos estratégicos, capacidades organizacionales y prácticas ambientales que conducen a un mejor desempeño ambiental y una mayor ventaja competitiva. Dichas capacidades se soportan en recursos empresariales estratégicos. Este proyecto de investigación busca construir un modelo de sistema de información (SI, como recurso estratégico, que facilite y apoye la gestión de información, inicialmente de una capacidad organizacional: “la gestión de stakeholders”, la cual permite a una firma desplegar prácticas ambientales más proactivas para alcanzar una ventaja competitiva sostenible. El modelo de SI fue desarrollado siguiendo algunas pautas de la metodología Arquitectura Dirigida por Modelos (MDA, además basándose en lo encontrado en la literatura, principalmente en la teoría NRBV y en el análisis de un diagnóstico realizado a 10 empresas de Bogotá, Colombia. Los resultados permiten concluir, entre otras cosas, que la gestión de información sobre la GAP en una firma se despliega de forma mucha más transversal que vertical a lo largo del SI y de las actividades primarias y secundarias de una compañía. Y además, los resultados proporcionan una guía para la adecuada gestión de información sobre la gestión de stakeholders encaminada hacia una GAP en PYMES de manufactura.

  12. TWRSview system requirements specification

    International Nuclear Information System (INIS)

    Caldwell, J.A.; Lee, A.K.

    1995-12-01

    This document provides the system requirements specification for the TWRSview software system. The TWRSview software system is being developed to integrate electronic data supporting the development of the TWRS technical baseline

  13. Antiskid braking system

    Science.gov (United States)

    Pazdera, J. S.

    1974-01-01

    Published report describes analytical development and simulation of braking system. System prevents wheels from skidding when brakes are applied, significantly reducing stopping distance. Report also presents computer simulation study on system as applied to aircraft.

  14. Calo trigger acquisition system

    CERN Multimedia

    Franchini, Matteo

    2016-01-01

    Calo trigger acquisition system - Evolution of the acquisition system from a multiple boards system (upper, orange cables) to a single board one (below, light blue cables) where all the channels are collected in a single board.

  15. The Trinity System

    Energy Technology Data Exchange (ETDEWEB)

    Archer, Billy Joe [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Vigil, Benny Manuel [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-01-13

    This paper describes the Trinity system, the first ASC Advanced Technology System (ATS-1). We describe the Trinity procurement timeline, the ASC computing strategy, the Trinity specific mission needs, and the Trinity system specifications.

  16. Central Nervous System Vasculitis

    Science.gov (United States)

    ... Forms of Vasculitis / Central Nervous System (CNS) Vasculitis Central Nervous System (CNS) Vasculitis Swap out your current Facebook Profile ... your Facebook personal page. Replace with this image. Central nervous system (CNS) vasculitis is inflammation of blood vessel walls ...

  17. What Are Expert Systems?

    Science.gov (United States)

    d'Agapeyeff, A.

    1986-01-01

    Intended for potential business users, this paper describes the main characteristics of expert systems; discusses practical use considerations; presents a taxonomy of the systems; and reviews several expert system development projects in business and industry. (MBR)

  18. Connected motorcycle system performance.

    Science.gov (United States)

    2016-01-15

    This project characterized the performance of Connected Vehicle Systems (CVS) on motorcycles based on two key components: global positioning and wireless communication systems. Considering that Global Positioning System (GPS) and 5.9 GHz Dedicated Sh...

  19. Pneumatic transfer systems

    International Nuclear Information System (INIS)

    Bichler, H.; Boeck, H.; Hammer, J.; Buchtela, K.

    1988-11-01

    A pneumatic transfer system for research reactors, including a sample changer system and to be used for neutron activation analysis, is described. The system can be obtained commercially from the Atominstitut. 2 figs. (qui)

  20. System Software 7 Macintosh

    CERN Multimedia

    1991-01-01

    System 7 is a single-user graphical user interface-based operating system for Macintosh computers and was part of the classic Mac OS line of operating systems. It was introduced on May 13, 1991, by Apple Computer. It succeeded System 6, and was the main Macintosh operating system until it was succeeded by Mac OS 8 in 1997. Features added with the System 7 release included virtual memory, personal file sharing, QuickTime, QuickDraw 3D, and an improved user interface. This is the first real major evolution of the Macintosh system, bringing a significant improvement in the user interface, improved stability and many new features such as the ability to use multiple applications at the same time. "System 7" is the last operating system name of the Macintosh that contains the word "system". Macintosh operating systems were later called "Mac OS" (for Macintosh Operating System).

  1. Immune System Quiz

    Science.gov (United States)

    ... Safe Videos for Educators Search English Español Quiz: Immune System KidsHealth / For Kids / Quiz: Immune System Print How much do you know about your immune system? Find out by taking this quiz! Partner Message ...

  2. Male Reproductive System

    Science.gov (United States)

    ... Videos for Educators Search English Español Male Reproductive System KidsHealth / For Parents / Male Reproductive System What's in ... your son's reproductive health. About the Male Reproductive System Most species have two sexes: male and female. ...

  3. Autonomic Nervous System Disorders

    Science.gov (United States)

    Your autonomic nervous system is the part of your nervous system that controls involuntary actions, such as the beating of your heart ... breathing and swallowing Erectile dysfunction in men Autonomic nervous system disorders can occur alone or as the result ...

  4. Formulações de anestésicos locais de liberação controlada: aplicações terapêuticas Formulaciones de anestésicos locales de liberación controlada: aplicaciones terapéuticas Drug-delivery systems for local anesthetics: therapeutic applications

    Directory of Open Access Journals (Sweden)

    Daniele Ribeiro de Araújo

    2003-09-01

    ésicas mais eficazes e seguras.JUSTIFICATIVA Y OBJETIVOS: El desenvolvimiento de sistemas de liberación controlada ha sido motivo de pesquisas desde cuatro décadas por lo menos. Desde que fue sugerida su aplicación en la industria farmacéutica, fueron obtenidos muchos resultados, especialmente en la manipulación molecular de carreadores y en el estudio de sus interacciones con las drogas encapsuladas. Esos nuevos carreadores tienen la ventaja de contornar propiedades físico-químicas limitantes (como la solubilidad acuosa o en membranas de las drogas encapsuladas, mejorando asi la farmacodinámica (potencialización del efecto terapéutico, farmacocinética (control de la absorción y distribución de tejidos y los efectos toxicológicos (reducción de la toxicidad local y sistémica de las mismas. Entre los principales carreadores, se destacan los liposomas y las ciclodextrinas, que están trayendo innúmeras ventajas en el desarrollo de formulaciones para liberación controlada de anestésicos locales. Este trabajo de revisión, objetiva describir la interacción de anestésicos locales con liposomas o ciclodextrinas, el desarrollo de las pesquisas básica y clínica en esa área, además de la aplicabilidad terapéutica de esas formulaciones. CONTENIDO: Liposomas tienen la capacidad de transportar drogas en órganos-clave, disponibilizando apenas una fracción - liberación controlada - para el sitio de acción. Ya las ciclodextrinas alteran la intensidad y la duración de efectos de las drogas a través de la baja absorción sistémica del complejo. Pesquisas básicas y clínicas, apuntan como ventajas del uso de anestésicos locales encapsulados en liposomas o complejos con ciclodextrinas la liberación lenta de la droga que prolonga la duración de la anestesia, y reduce la toxicidad para los sistemas cardiovascular y nervioso central. CONCLUSIONES: No obstante varias pesquisas están aún en andamiento, los sistemas de liberación controlada de anest

  5. Gas transfer system

    International Nuclear Information System (INIS)

    Oberlin, J.C.; Frick, G.; Kempfer, C.; North, C.

    1988-09-01

    The state of work on the Vivitron gas transfer system and the system functions are summarized. The system has to: evacuate the Vivitron reservoir; transfer gas from storage tanks to the Vivitron; recirculate gas during operation; transfer gas from the Vivitron to storage tanks; and assure air input. The system is now being installed. Leak alarms are given by SF6 detectors, which set off a system of forced ventilation. Another system continuously monitors the amount of SF6 in the tanks [fr

  6. Battery systems engineering

    CERN Document Server

    Rahn, Christopher D

    2012-01-01

    A complete all-in-one reference on the important interdisciplinary topic of Battery Systems Engineering Focusing on the interdisciplinary area of battery systems engineering, this book provides the background, models, solution techniques, and systems theory that are necessary for the development of advanced battery management systems. It covers the topic from the perspective of basic electrochemistry as well as systems engineering topics and provides a basis for battery modeling for system engineering of electric and hybrid electric vehicle platforms. This original

  7. Small test SDHW systems

    DEFF Research Database (Denmark)

    Vejen, Niels Kristian

    1999-01-01

    Three small test SDHW systems was tested in a laboratory test facility.The three SDHW systems where all based on the low flow principe and a mantle tank but the design of the systems where different.......Three small test SDHW systems was tested in a laboratory test facility.The three SDHW systems where all based on the low flow principe and a mantle tank but the design of the systems where different....

  8. Bridge Management Systems

    DEFF Research Database (Denmark)

    Thoft-Christensen, Palle

    In this paper bridge management systems are discussed with special emphasis on management systems for reinforced concrete bridges. Management systems for prestressed concrete bridges, steel bridges, or composite bridges can be developed in a similar way.......In this paper bridge management systems are discussed with special emphasis on management systems for reinforced concrete bridges. Management systems for prestressed concrete bridges, steel bridges, or composite bridges can be developed in a similar way....

  9. Geometric Fuzzy Logic Systems

    OpenAIRE

    Coupland, Simon

    2006-01-01

    There has recently been a significant increase in academic interest in the field oftype-2 fuzzy sets and systems. Type-2 fuzzy systems offer the ability to model and reason with uncertain concepts. When faced with uncertainties type-2 fuzzy systems should, theoretically, give an increase in performance over type-l fuzzy systems. However, the computational complexity of generalised type-2 fuzzy systems is significantly higher than type-l systems. A direct consequence of this is that, prior to ...

  10. Marketing reporting system

    Directory of Open Access Journals (Sweden)

    Hanić Hasan M.

    2004-01-01

    Full Text Available The main components of a developed and good organized marketing information system are: internal reporting system, marketing reporting system, market research system and analytical marketing system. Marketing reporting system provides data and information about changes in business and micro marketing environment. This component of MIS ensures that marketing managers are up-to-date with what is going on, and to be informed about changes in company marketing environment.

  11. Avionics System Performance Management

    National Research Council Canada - National Science Library

    Damania, Bhavesh

    1998-01-01

    .... The reasons for improved performance management include advances in processor technology and architectures, increasingly integrated systems, and the requirement of reducing costs in developing and deploying the systems...

  12. Airports Geographic Information System -

    Data.gov (United States)

    Department of Transportation — The Airports Geographic Information System maintains the airport and aeronautical data required to meet the demands of the Next Generation National Airspace System....

  13. Control system design method

    Science.gov (United States)

    Wilson, David G [Tijeras, NM; Robinett, III, Rush D.

    2012-02-21

    A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

  14. Neural Systems Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — As part of the Electrical and Computer Engineering Department and The Institute for System Research, the Neural Systems Laboratory studies the functionality of the...

  15. Credit Management System

    Data.gov (United States)

    US Agency for International Development — Credit Management System. Outsourced Internet-based application. CMS stores and processes data related to USAID credit programs. The system provides information...

  16. Aeronautical Information System -

    Data.gov (United States)

    Department of Transportation — The Aeronautical Information System (AIS) is a leased weather automated system that provides a means of collecting and distributing aeronautical weather information...

  17. Cognitive Medical Multiagent Systems

    Directory of Open Access Journals (Sweden)

    Barna Iantovics

    2010-01-01

    Full Text Available The development of efficient and flexible agent-based medical diagnosis systems represents a recent research direction. Medical multiagent systems may improve the efficiency of traditionally developed medical computational systems, like the medical expert systems. In our previous researches, a novel cooperative medical diagnosis multiagent system called CMDS (Contract Net Based Medical Diagnosis System was proposed. CMDS system can solve flexibly a large variety of medical diagnosis problems. This paper analyses the increased intelligence of the CMDS system, which motivates its use for different medical problem’s solving.

  18. Systems engineering for very large systems

    Science.gov (United States)

    Lewkowicz, Paul E.

    Very large integrated systems have always posed special problems for engineers. Whether they are power generation systems, computer networks or space vehicles, whenever there are multiple interfaces, complex technologies or just demanding customers, the challenges are unique. 'Systems engineering' has evolved as a discipline in order to meet these challenges by providing a structured, top-down design and development methodology for the engineer. This paper attempts to define the general class of problems requiring the complete systems engineering treatment and to show how systems engineering can be utilized to improve customer satisfaction and profit ability. Specifically, this work will focus on a design methodology for the largest of systems, not necessarily in terms of physical size, but in terms of complexity and interconnectivity.

  19. Integrated Systems Health Management for Intelligent Systems

    Science.gov (United States)

    Figueroa, Fernando; Melcher, Kevin

    2011-01-01

    The implementation of an integrated system health management (ISHM) capability is fundamentally linked to the management of data, information, and knowledge (DIaK) with the purposeful objective of determining the health of a system. It is akin to having a team of experts who are all individually and collectively observing and analyzing a complex system, and communicating effectively with each other in order to arrive at an accurate and reliable assessment of its health. In this paper, concepts, procedures, and approaches are presented as a foundation for implementing an intelligent systems ]relevant ISHM capability. The capability stresses integration of DIaK from all elements of a system. Both ground-based (remote) and on-board ISHM capabilities are compared and contrasted. The information presented is the result of many years of research, development, and maturation of technologies, and of prototype implementations in operational systems.

  20. Automatic system of tests for control equipment in combined cycle power stations; Sistema automatico de pruebas para equipos de control en centrales de ciclo combinado

    Energy Technology Data Exchange (ETDEWEB)

    Martinez M, Miguel A; Flores L, Zenon; Delgadillo V, Miguel A; Gutierrez A, Ruben [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2001-07-01

    This article deals on the Automatic System of Tests, denominated PROBADOR, used by the Gerencia de Control e Instrumentation (GCI) of the Instituto de Investigaciones Electricas (IIE)for the accomplishment of dynamic tests in laboratory, to the systems of acquisition and control developed with the electronic line SAC-IIE that are installed in the Thermoelectric Power station of Combined Cycle (CTCC) of Dos Bocas, Veracruz and Gomez Palacio, Durango, Mexico. Also the architecture, the functions that are carried out in the equipment of the System of Acquisition and control (SAC) and in the personal computer (PC) that conforms it are described, as well as the methodology used for the development of the tests. The PC constitutes Interface Man-Machine (IMM) and in the SAC equipment the simulation of the processes is made (by means of the execution of algebraic-differential equations) in the compressor, combustion chamber, gas turbine, heat recuperators, steam turbines and condenser equipment that integrate a CTCC. The equations that are used are based in the thermodynamics, flow dynamics and heat transfer; they become attached to the real process with a margin of error that is estimated in 10%. Finally, the tendencies of the PROBADOR and the technical and economic advantages are described that it has provided for the improvement in the performance of the control systems, before different situations, with no need to have the real process. [Spanish] Este articulo versa sobre el Sistema Automatico de Pruebas, denominado PROBADOR, utilizado por la Gerencia de Control e Instrumentacion (GCI) del Instituto de Investigaciones Electricas para la realizacion de pruebas dinamicas en laboratorio, a los sistemas de adquisicion y control desarrollado con la linea electronica SAC-IIE que estan instalados en las Centrales Termoelectricas de Ciclo Combinado (CTCC) de Dos Bocas, Veracruz y Gomez Palacio, Durango, Mexico. Tambien se describen la arquitectura, las funciones que se llevan

  1. Systems analysis of a security alarm system

    International Nuclear Information System (INIS)

    Schiff, A.

    1975-01-01

    When the Lawrence Livermore Laboratory found that its security alarm system was causing more false alarms and maintenance costs than LLL felt was tolerable, a systems analysis was undertaken to determine what should be done about the situation. This report contains an analysis of security alarm systems in general and ends with a review of the existing Security Alarm Control Console (SACC) and recommendations for its improvement, growth and change. (U.S.)

  2. Formal System Verification for Trustworthy Embedded Systems

    Science.gov (United States)

    2011-04-19

    step is for the first time formal and machine-checked. Contemporary OS verification projects include Verisoft, Verisoft XT, and Verve . The Verisoft...tens of thousands lines of code. The Verve kernel [22] shows that type and memory safety properties can be established on the assembly level via type...systems and therefore with much lower cost. Verve contains a formally verified runtime system, in particular a garbage collector that the type system

  3. L-system fractals

    CERN Document Server

    Mishra, Jibitesh

    2007-01-01

    The book covers all the fundamental aspects of generating fractals through L-system. Also it provides insight to various researches in this area for generating fractals through L-system approach & estimating dimensions. Also it discusses various applications of L-system fractals. Key Features: - Fractals generated from L-System including hybrid fractals - Dimension calculation for L-system fractals - Images & codes for L-system fractals - Research directions in the area of L-system fractals - Usage of various freely downloadable tools in this area - Fractals generated from L-System including hybrid fractals- Dimension calculation for L-system fractals- Images & codes for L-system fractals- Research directions in the area of L-system fractals- Usage of various freely downloadable tools in this area

  4. SYSTEMS APPROACH FOR CONTEMPORARY COMPLEX TOURISM SYSTEMS

    Directory of Open Access Journals (Sweden)

    Tadeja Jere Jakulin

    2016-09-01

    Full Text Available Systems approach represents thinking outside the box and is connected to the transformation of common linear approach and thinking. Western society followed rules of classical western science, which form many centuries took analysis as mainstream of thinking and researching. One can find perfect and logical explanation for this. In the past, classical science researched matter and reached optimal results with analysis and analytical thinking. Nowadays more and more scientists research intangible world around matter and cooperate with prevailed, fastest growing service industry such as tourism. Following paper presents systems approach in tourism, which defines wideness, co-dependency among tourism system elements, and "big picture" point of view. In a frame of systems methodology, we will show the importance of systems approach in order to understand complexity in the area of tourism. At once an excellent example of the analytical approach will be shown in so called "the tip of the iceberg" theory, where events represent analytical thinking and structure or base of the iceberg represents systems approach. Complexity of the tourism systems will be explained and a model of a common tourism system developed. We claim that the analysis, in the past, caused technological progress; it caused the development of western science, which we now know it. It led to the discoveries but for dealing with contemporary complex challenges is not sufficient. Today a systems approach is suitable enough for dealing with complex question in the area of tourism and of course in global society.

  5. Power system protection 2 systems and methods

    CERN Document Server

    1995-01-01

    The worldwide growth in demand for electricity has forced the pace of developments in electrical power system design to meet consumer needs for reliable, secure and cheap supplies. Power system protection, as a technology essential to high quality supply, is widely recognised as a specialism of growing and often critical importance, in which power system needs and technological progress have combined to result in rapid developments in policy and practice in recent years. In the United Kingdom, the need for appropriate training in power system protection was recognised in the early 1960s with t

  6. Automating System Assembly of Aerospace Systems

    Science.gov (United States)

    Manolios, Panagiotis

    2008-01-01

    One of the major challenges in modern aerospace designs is the integration and assembly of independently developed components. We have formalized this as the system assembly problem: from a sea of available components, which should be selected and how should they be connected, integrated, and assembled so that the overall system requirements are satisfied in a certifiable way? We present a powerful framework for automatically solving the system assembly problem directly from system requirements by using formal verification technology. We also present a case study where we applied our work to large-scale industrial examples from the Boeing Dreamliner.

  7. Site systems engineering: Systems engineering management plan

    Energy Technology Data Exchange (ETDEWEB)

    Grygiel, M.L. [Westinghouse Hanford Co., Richland, WA (United States)

    1996-05-03

    The Site Systems Engineering Management Plan (SEMP) is the Westinghouse Hanford Company (WHC) implementation document for the Hanford Site Systems Engineering Policy, (RLPD 430.1) and Systems Engineering Criteria Document and Implementing Directive, (RLID 430.1). These documents define the US Department of Energy (DOE), Richland Operations Office (RL) processes and products to be used at Hanford to implement the systems engineering process at the site level. This SEMP describes the products being provided by the site systems engineering activity in fiscal year (FY) 1996 and the associated schedule. It also includes the procedural approach being taken by the site level systems engineering activity in the development of these products and the intended uses for the products in the integrated planning process in response to the DOE policy and implementing directives. The scope of the systems engineering process is to define a set of activities and products to be used at the site level during FY 1996 or until the successful Project Hanford Management Contractor (PHMC) is onsite as a result of contract award from Request For Proposal DE-RP06-96RL13200. Following installation of the new contractor, a long-term set of systems engineering procedures and products will be defined for management of the Hanford Project. The extent to which each project applies the systems engineering process and the specific tools used are determined by the project`s management.

  8. Hot Spot Removal System: System description

    International Nuclear Information System (INIS)

    1997-09-01

    Hazardous wastes contaminated with radionuclides, chemicals, and explosives exist across the Department of Energy complex and need to be remediated due to environmental concerns. Currently, an opportunity is being developed to dramatically reduce remediation costs and to assist in the acceleration of schedules associated with these wastes by deploying a Hot Spot Removal System. Removing the hot spot from the waste site will remove risk driver(s) and enable another, more cost effective process/option/remedial alternative (i.e., capping) to be applied to the remainder of the site. The Hot Spot Removal System consists of a suite of technologies that will be utilized to locate and remove source terms. Components of the system can also be used in a variety of other cleanup activities. This Hot Spot Removal System Description document presents technologies that were considered for possible inclusion in the Hot Spot Removal System, technologies made available to the Hot Spot Removal System, industrial interest in the Hot Spot Removal System''s subsystems, the schedule required for the Hot Spot Removal System, the evaluation of the relevant technologies, and the recommendations for equipment and technologies as stated in the Plan section

  9. Integración regional, necesidades de salud de la población y dotación de recursos humanos en sistemas y servicios de salud: aproximación al concepto de estimación de brecha Regional integration, population health needs, and human resources for health systems and services: an approach to the concept of health care gap

    Directory of Open Access Journals (Sweden)

    Arturo Luis Francisco Schweiger

    2007-01-01

    Full Text Available La existencia de brechas asistenciales entre las necesidades de salud de la población y los recursos humanos disponibles para responder a ellas, así como las limitaciones de los métodos que permitirían estimar dichas necesidades, constituyen un factor clave a trabajar para el desarrollo e integración de los sistemas de salud de los países de la región. El objetivo de este trabajo es iniciar un primer examen bibliográfico de las herramientas y procedimientos, presentes en la literatura, empleados para estimar y programar la dotación de recursos humanos en salud y, a partir de la revisión realizada, identificar las ventajas, limitaciones y complementariedades de dichas herramientas, planteando la necesidad de profundizar estudios referentes a su aplicabilidad en el diseño de políticas sanitarias regionales. Desde esa perspectiva se presenta el concepto de Bienes Públicos Globales en Salud, cuya generación y aprovechamiento resulta una alternativa estratégica para la mejora e integración de los sistemas de salud de la región y la población a la que asisten.The existence of gaps between the population's health needs and the human resources available for meeting them, as well as limitations in the methods to estimate such needs, constitute key factors to be tackled in the development and integration of health systems in Latin America. This aim of this study was to conduct an initial literature review on the tools and procedures used to estimate and plan human resources allocation in health and to use this review as the basis for identifying the advantages, limitations, and complementary characteristics of these tools, subsequently proposing the need for more in-depth studies on their applicability for designing regional health policies. The article then presents the concept of global public health goods, the generation and use of which results in a strategic alternative for improving both health systems integration in the region and

  10. “Modelo de plan de negocio para las empresas constructoras de la ciudad de Riobamba provincia de Chimborazo como ventaja en el posicionamiento del mercado periodo julio 2015 – julio 2016

    OpenAIRE

    Mejía Paucar, Luis Miguel

    2017-01-01

    This research was carried out in the construction company Andrade & Obregon province of Chimborazo, Riobamba Canton, in order to optimize all your resources and thus achieve a continuous improvement of the administrative and financial processes that are carried out. In the world, versatile that live the offer of construction has increased in them last years and as consequence there is greater competitiveness in the branch, making that the consumer is more demanding and look for places that me...

  11. Telework and daily life: Its pros and cons for work-life balance Teletrabajo y vida cotidiana: Ventajas y dificultades para la conciliación de la vida laboral, personal y familiar.

    Directory of Open Access Journals (Sweden)

    Carmen Pérez Sánchez

    2009-05-01

    Full Text Available In this article we discuss whether telework constitutes a useful work-life balance strategy for women teleworkers with dependants. From our analysis we show that the discourse of the women interviewed about telework is not homogeneous, compact or linear, but includes plenty of contradictions, paradoxes and tensions. This fact reinforces telework’s enormous polysemy: it liberates and enslaves, it is a trap and an opportunity, it fulfills and can mean self-sacrifice. But, despite this rich complexity, our women informants agree on one particular matter: telework’s risks and possibly pernicious effects cannot hide either its advantages for work-life balance or the benefits it brings, at least in some cases, to one's personal life.

    En este artículo discutimos si el teletrabajo constituye una estrategia de conciliación de la vida laboral, familiar y personal para las mujeres teletrabajadoras con cargas familiares. A través de nuestro análisis mostramos que el discurso de las mujeres entrevistadas sobre el teletrabajo no es homogéneo, compacto o lineal, sino que aparece plagado de contradicciones, paradojas y tensiones. Este hecho refuerza su enorme polisemia: libera y esclaviza, es una trampa y una oportunidad, realiza personalmente y puede significar una renuncia. Pero, a pesar de esta rica complejidad, nuestras entrevistadas están de acuerdo en una cuestión muy concreta: los riesgos y los posibles efectos perniciosos del teletrabajo no pueden ensombrecer ni su potencial laboral ni los beneficios que comporta de cara a conciliar su vida laboral, familiar, y sólo en algunos casos, personal.

  12. Determinación de las ventajas ambientales que presenta un vehículo híbrido respecto a un vehículo normal de similares características

    OpenAIRE

    Cajamarca Tigre, Diego Armando; García Toledo, Vladimir Eduardo

    2010-01-01

    Los contaminantes atmosféricos emitidos por los automóviles, son causantes de diversos problemas ambientales, que afectan directamente a la salud de las personas, actualmente se considera que del 25 al 30% de total de enfermedades respiratorias son causadas por la contaminación del aire. Por lo que es necesario y recomendable utilizar vehículos con tecnologías más limpias que utilicen energías alternativas, con el afán de disminuir la emisión de contaminantes hacia la atmosfera. Una forma ...

  13. Economic and environmental advantages for the utilization of the industrial potential of cogeneration in Mexico; Ventajas economicas y ambientales para el aprovechamiento del potencial industrial de cogeneracion en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Leon de los Santos, G [Division de Estudios Posgrado, Facultad de ingenieria, Universidad Nacional Autonoma de Mexico, Mexico, D.F. (Mexico)

    2003-01-15

    Mexico has an industrial cogeneration potential very important, not evaluated or projected within its historical growth. The objective of the present work consist of studying the industrial cogeneration potential that exists in Mexico, as well as the economic and environmental savings that it would be achieved if one took advantage of this potential. As a result of the present work we can conclude that the cogeneration in Mexico offers a theoretical potential middle of 28,000 MWe to the 2007. It is estimated an economic saving potential in the construction of generation infrastructure electrical, for the high stage of its utilization of almost 7000 million dollars and a stage of emissions reduction of 2007- 21.4%, instead of 2007- 0.35%, for the industrial sector of the country. Provided that change the vision of the government of seeing to the cogeneration as a measure of energy saving and substitute it by that of political of complement to the development of the national electrical sector. [Spanish] Mexico tiene un importante potencial de cogeneracion industrial que no ha sido evaluado ni proyectado dentro de su crecimiento historico, por ello, el objetito de este trabajo consiste en estudiar y conocer los ahorros economicos y ambientales que se podrian lograr si se aprovechara dicho potencial. Como resultado, se muestra que la cogeneracion en Mexico ofrece un potencial teorico medio de 28,000 MW e al ano 2007. Se estima tambien un ahorro economico en la construccion de infraestructura de generacion electrica para el escenario alto de su aprovechamiento de casi 7000 mdd, y un escenario de reduccion de emisiones para el sector industrial del pais de un 0.35% a un 21.47% para el ano 2007. Estos pronosticos se pueden lograr, siempre y cunado el gobierno cambie la vision de manejar este tema como una medida de ahorro de energia, y la sustituya por la politica de complemento al desarrollo del sector electrico nacional.

  14. Economic and environmental advantages for the use of the industrial potential of cogeneration in Mexico City; Ventajas economicas y ambientales para el aprovechamiento del potencial industrial de cogeneracion en Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Leon de los Santos, G. [Division de Estudios de Posgrado, Facultad de Ingenieria, UNAM, Mexico, D.F. (Mexico)

    2003-03-01

    Mexico has an industrial cogeneration potential very important, not evaluated or projected within its historical growth. The objective of the present work consist of studying the industrial cogeneration potential that exists in Mexico, as well as the economic and environmental savings that it would be achieved if one took advantage of this potential. As a result of the present work we can conclude that the cogeneration in Mexico offers a theoretical potential middle of 28,000 MWe to the 2007. It is estimated an economic saving potential in the construction of generation infrastructure electrical, for the high stage of its utilization of almost 7000 million of dollars and a stage of emissions reduction of 2007- 21.37% instead of 2007- 0.35% for the industrial sector of the country. These prognoses can be obtained, as long as the government changes vision to handle this subject as a measure of energy saving, and substitute it by the policy of complement the development of the national electrical sector. [Spanish] Mexico tiene un importante potencial de cogeneracion industrial que no ha sido evaluado ni proyectado dentro de su crecimiento historico, por ello, el objetivo de este trabajo consiste en estudiar y conocer los ahorros economicos y ambientales que se podrian lograr si se aprovechara dicho potencial. Como resultado, se muestra que la cogeneracion en Mexico ofrece un potencial teorico medio de 28,000 MWe al ano 2007. Se estima tambien un ahorro economico en la construccion de infraestructura de generacion electrica para el escenario alto de su aprovechamiento de casi 7 000 mdd, y un escenario de reduccion de emisiones para el sector industrial del pais de un 0.35% a un 21.4% para el ano 2007. Estos pronosticos se pueden lograr, siempre y cuando el gobierno cambie la vision de manejar este tema como una medida de ahorro de energia, y la sustituya por la politica de complemento al desarrollo del sector electrico nacional.

  15. Innovación tecnológica y desarrollo de ventaja competitiva en la atención a la salud: enfoque conceptual y metodológico

    OpenAIRE

    Giacometti-Rojas, Luis Fernando; UDES Panamá

    2013-01-01

    La competitividad es tan antigua como la economía y el comercio. Es el resultado de una combinaciónde tendencias y escuelas de pensamiento que aportan elementos orientados a fortalecercapacidades organizativas, de producción para el comercio internacional, mayor sostenibilidady mejora en el desempeño. La discusión entre producción, tecnología y competitividad ha sidomuy tratada en el campo empresarial, no así en el sector salud, donde ha sido más vinculada areformas sectoriales e introducción...

  16. Análisis de la implementación de facturación electrónica en el Ecuador: ventajas y desventajas frente a la facturación física

    OpenAIRE

    Pazmiño Rubio, Viviana Andrea

    2015-01-01

    La vigente Ley de Comercio Electrónico, Firmas Electrónicas y Mensajes de Datos del Ecuador (Ley de Comercio Electrónico), publicada en el Registro Oficial número 557 (17 de abril de 2002), define la factura electrónica como el "conjunto de registros lógicos archivados en soportes susceptibles de ser leídos por equipos electrónicos de procesamiento de datos que documentan la transferencia de bienes y servicios, cumpliendo con los requisitos exigidos por las Leyes Tributarias, Mercantiles y má...

  17. Revisión bibliográfica : ventajas e inconvenientes de la aplicación de los modelos de enfermería en la práctica

    OpenAIRE

    Moretón Calderón, María

    2012-01-01

    Este trabajo pretende analizar de forma crítica los diferentes estudios realizados en la última década acerca de la aplicabilidad de los modelos de enfermería en términos de funcionalidad en la práctica asistencial. Se tomó como base para el estudio los artículos publicados en las revistas de enfermería de habla hispana; Enfermería Global, Index de Enfermería, Metas de Enfermería y Enfermería Clínica y en las de habla inglesa; Nursing Outlook, Nursing Research y Nursing Inquiry, en los años c...

  18. Ventajas de aplicar la triangulación empresarial entre España, China y América Latina. Una relación win-win para todos los polos

    Directory of Open Access Journals (Sweden)

    Agueda Parra Pérez

    2016-05-01

    Full Text Available España tiene la oportunidad de desempeñar un papel importante en el proceso de internacionalización de las empresas chinas hacia Europa y América Latina gracias a la histórica experiencia de las multinacionales españolas en estas regiones. Puesto que las relaciones diplomáticas entre España y China gozan de buena sintonía, si España aprovecha la posición de privilegio respecto al resto de economías europeas, el gigante asiático podría estar interesado en el apoyo de España en América Latina, propiciando así la implantación de iniciativas de cooperación entre los tres polos. Los puntos clave para construir una relación win-win en clave triangular es la importancia de un socio local para profundizar en su despliegue internacional en América Latina, que las empresas chinas requieren, además del expertise y know-how necesarios en los procesos operativos, siendo en estos ámbitos las empresas españolas las mejor posicionadas.

  19. Hard hardfacing by welding in the manufacture of valves; Problem Cobalt, alternatives, advantages, disadvantages; Recargues Duros por Soldadura en la Fabricacion de Valvulas ; el Problema del Cobalto, alternativas, ventajas, inconvenientes

    Energy Technology Data Exchange (ETDEWEB)

    Piquer Caballero, J.

    2014-07-01

    Alloys of recharge usually used in the field of the valves are base alloys cobalt (stellite), but in the field of nuclear power plants, due to radioactive activation of the cobalt, there is a growing trend to replace these alloys with other calls cobalt free . In this paper we will explore the most frequent and will be deducted the relevant advantages and disadvantages of these, in comparison with base alloys cobalt. (Author)

  20. La protección de los diseños industriales en la unión europea. Principales rasgos y ventajas del diseño comunitario

    Directory of Open Access Journals (Sweden)

    Manuel Marhuenda

    2006-01-01

    Full Text Available El presente estudio analiza los diferentes elementos que singularizan la protección jurídica del “diseño comunitario” en la Unión Europea, comprendiendo dentro de esta expresión, tanto los dibujos como los modelos industriales comunitarios. Igualmente se examinarán brevemente varias cuestiones concretas relativas al reconocimiento y la protección de los diseños industriales como objetos de propiedad industrial conjuntamente con los vínculos que acercan este derecho a otros objetos de propiedad industrial como son las marcas tridimensionales y los derechos de Autor.

  1. Un análisis de la gestión de la calidad total y de la gestión del conocimiento como fuente de ventajas competitivas.

    Directory of Open Access Journals (Sweden)

    Antonio Mihi Ramírez

    2008-05-01

    Full Text Available The relative importance of the productive factors has changed, being crucial that the processes of management of companies consider the knowledge management. in addition, the total quality management bears one narrow relation to the knowledge management, and they are also an important source of competitive advantages. The purpose of this investigation is to analyze how the total quality management and the knowledge acts, both, like creators of the essential competitions so that an organization has important competitive advantages that they favor the increase of his yield in all his levels.

  2. Un análisis de la gestión de la calidad total y de la gestión del conocimiento como fuente de ventajas competitivas.

    OpenAIRE

    Antonio Mihi Ramírez

    2008-01-01

    The relative importance of the productive factors has changed, being crucial that the processes of management of companies consider the knowledge management. in addition, the total quality management bears one narrow relation to the knowledge management, and they are also an important source of competitive advantages. The purpose of this investigation is to analyze how the total quality management and the knowledge acts, both, like creators of the essential competitions so that an organizatio...

  3. De la planeación estratégica a la planeación tecnológica “La búsqueda de ventajas competitivas sostenibles en un ambiente global”

    OpenAIRE

    Sánchez Preciado, Deycy Janeth; Alvarez, Ricardo

    2005-01-01

    El presente artículo describe la relación existente entre la planeación estratégica de negocios y la planeación tecnológica, mediante el análisis del papel de la innovación y la tecnología, a fin de caracterizar las dos planeaciones. Una vez realizado lo anterior, se profundiza en la planeación tecnológica como un componente final para dar soporte a la planeación estratégica de negocios. Se presentan además, en una primera aproximación, los puntos esenciales en el momento de proponer algunos ...

  4. Bovine paratuberculosis: a review of the advantages and disadvantages of different diagnostic tests Paratuberculosis bovina: una revisión sobre las ventajas y desventajas de las diferentes pruebas diagnósticas

    OpenAIRE

    Liliana R. Gilardoni; Fernando A. Paolicchi; Silvia L. Mundo

    2012-01-01

    Paratuberculosis (PTB), or Johne's disease, is a chronic infectious granulomatous enteritis of ruminants, caused by Mycobacterium avium subspecies paratuberculosis (Map). It is characterized by diarrhea and progressive cachexia, which may cause the death of the animal. Calves are the most susceptible to infection. Infected animals excrete Map mainly by the feces. PTB is endemic worldwide, with high prevalence levels, strong economic impact and public health relevance because of its possible a...

  5. Consecuencias políticas del calendario electoral en América latina: ventajas y desventajas de elecciones simultáneas o separadas para presidente y legislatura

    Directory of Open Access Journals (Sweden)

    José Enrique MOLINA V.

    2010-07-01

    Full Text Available El trabajo analiza los planteamientos desarrollados por Shugart y Carey (1992 y Mainwaring y Shugart (1997 con relación al efecto que sobre la gobernabilidad y la representatividad tienen las distintas combinaciones de sistema electoral para presidente de la República con la fecha en que se realizan las elecciones legislativas (simultáneas o separadas con las presidenciales, confrontando las hipótesis que se derivan de estos análisis con los resultados de las elecciones presidenciales celebradas en los países de América Latina entre 1996 y 2000. Se llega a la conclusión de que los resultados electorales tienden a corroborar las hipótesis sobre el efecto combinado del calendario electoral y el sistema electoral presidencial sobre la gobernabilidad y la representatividad, y en particular sobre la posibilidad de que el presidente electo cuente con una fuerza parlamentaria mayoritaria o sólida.

  6. La protección de los diseños industriales en la unión europea. Principales rasgos y ventajas del diseño comunitario

    Directory of Open Access Journals (Sweden)

    Manuel Marhuenda

    2006-11-01

    Full Text Available El presente estudio analiza los diferentes elementos que singularizan la protección jurídica del “diseño comunitario” en la Unión Europea, comprendiendo dentro de esta expresión, tanto los dibujos como los modelos industriales comunitarios. Igualmente se examinarán brevemente varias cuestiones concretas relativas al reconocimiento y la protección de los diseños industriales como objetos de propiedad industrial conjuntamente con los vínculos que acercan este derecho a otros objetos de propiedad industrial como son las marcas tridimensionales y los derechos de Autor.

  7. Information Systems Security Audit

    OpenAIRE

    Gheorghe Popescu; Veronica Adriana Popescu; Cristina Raluca Popescu

    2007-01-01

    The article covers:Defining an information system; benefits obtained by introducing new information technologies; IT management;Defining prerequisites, analysis, design, implementation of IS; Information security management system; aspects regarding IS security policy; Conceptual model of a security system; Auditing information security systems and network infrastructure security.

  8. Product Service Systems

    DEFF Research Database (Denmark)

    Departing from Product Development models based on physical artefacts. Moving towards integrated Product Development and System Operations models suited Product/Service-systems......Departing from Product Development models based on physical artefacts. Moving towards integrated Product Development and System Operations models suited Product/Service-systems...

  9. ERP–systems

    OpenAIRE

    Shustova I.

    2016-01-01

    In this work, we analyzed the existing ERP–systems of foreign and domestic manufacturers. Popular ERP–systems in the Republic of Belarus were considered. The leading ERP-systems in the domestic market and their features were described in detail. Finally, we described the steps that must be taken to select the most suitable ERP-system for a particular company.

  10. Medical imaging systems

    Science.gov (United States)

    Frangioni, John V

    2013-06-25

    A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.

  11. Expert Systems: An Overview.

    Science.gov (United States)

    Adiga, Sadashiv

    1984-01-01

    Discusses: (1) the architecture of expert systems; (2) features that distinguish expert systems from conventional programs; (3) conditions necessary to select a particular application for the development of successful expert systems; (4) issues to be resolved when building expert systems; and (5) limitations. Examples of selected expert systems…

  12. CDMA systems capacity engineering

    CERN Document Server

    Kim, Kiseon

    2004-01-01

    This new hands-on resource tackles capacity planning and engineering issues that are crucial to optimizing wireless communication systems performance. Going beyond the system physical level and investigating CDMA system capacity at the service level, this volume is the single-source for engineering and analyzing systems capacity and resources.

  13. Combinatorial Hybrid Systems

    DEFF Research Database (Denmark)

    Larsen, Jesper Abildgaard; Wisniewski, Rafal; Grunnet, Jacob Deleuran

    2008-01-01

    As initially suggested by E. Sontag, it is possible to approximate an arbitrary nonlinear system by a set of piecewise linear systems. In this work we concentrate on how to control a system given by a set of piecewise linear systems defined on simplices. By using the results of L. Habets and J. v...

  14. EUCLID ARCHIVE SYSTEM PROTOTYPE

    NARCIS (Netherlands)

    Belikov, Andrey; Williams, Owen; Droge, Bob; Tsyganov, Andrey; Boxhoorn, Danny; McFarland, John; Verdoes Kleijn, Gijs; Valentijn, E; Altieri, Bruno; Dabin, Christophe; Pasian, F.; Osuna, Pedro; Soille, P.; Marchetti, P.G.

    2014-01-01

    The Euclid Archive System prototype is a functional information system which is used to address the numerous challenges in the development of fully functional data processing system for Euclid. The prototype must support the highly distributed nature of the Euclid Science Ground System, with Science

  15. System Performance and Testing

    NARCIS (Netherlands)

    Frei, U.; Oversloot, H.

    2004-01-01

    This chapter compares and contrasts the system performance of two widely used solar thermal systems using testing and simulation programs. Solar thermal systems are used in many countries for heating domestically used water. In addition to the simple thermosiphon systems, better designed pumped

  16. Hybrid intelligent engineering systems

    CERN Document Server

    Jain, L C; Adelaide, Australia University of

    1997-01-01

    This book on hybrid intelligent engineering systems is unique, in the sense that it presents the integration of expert systems, neural networks, fuzzy systems, genetic algorithms, and chaos engineering. It shows that these new techniques enhance the capabilities of one another. A number of hybrid systems for solving engineering problems are presented.

  17. Immune System (For Parents)

    Science.gov (United States)

    ... Staying Safe Videos for Educators Search English Español Immune System KidsHealth / For Parents / Immune System What's in this ... can lead to illness and infection. About the Immune System The immune system is the body's defense against ...

  18. The Linux Operating System

    Indian Academy of Sciences (India)

    Linux Distributions. Linux per se refers only to the kernel of the operating system. A full fledged Unix system however requires a set of applications and support software that make the system user friendly. Hundreds of programmers around the world ,have contributed to bring the Linux system to its current state of robustness.

  19. A Multiagent System for Distributed Systems Management

    OpenAIRE

    H. M. Kelash; H. M. Faheem; M. Amoon

    2007-01-01

    The demand for autonomous resource management for distributed systems has increased in recent years. Distributed systems require an efficient and powerful communication mechanism between applications running on different hosts and networks. The use of mobile agent technology to distribute and delegate management tasks promises to overcome the scalability and flexibility limitations of the currently used centralized management approach. This work proposes a multiagent s...

  20. ENVIRONMENTAL SYSTEMS MANAGEMENT AND SUSTAINABLE SYSTEMS THEORY

    Science.gov (United States)

    Environmental Systems Management is the management of environmental problems at the systems level fully accounting for the multi-dimensional nature of the environment. This includes socio-economic dimensions as well as the usual physical and life science aspects. This is importa...

  1. Transdisciplinarity Needs Systemism

    Directory of Open Access Journals (Sweden)

    Wolfgang Hofkirchner

    2017-02-01

    Full Text Available The main message of this paper is that systemism is best suited for transdisciplinary studies. A description of disciplinary sciences, transdisciplinary sciences and systems sciences is given, along with their different definitions of aims, scope and tools. The rationale for transdisciplinarity is global challenges, which are complex. The rationale for systemism is the concretization of understanding complexity. Drawing upon Ludwig von Bertalanffy’s intention of a General System Theory, three items deserve attention—the world-view of a synergistic systems technology, the world picture of an emergentist systems theory, and the way of thinking of an integrationist systems method.

  2. What is systems engineering?

    Energy Technology Data Exchange (ETDEWEB)

    Bahill, A.T. [comp.] [Arizona Univ. (United States). Systems and Industrial Engineering

    1995-08-01

    Systems Engineering is an interdisciplinary process that ensures that the customers` needs are satisfied throughout a system`s entire life cycle. This process includes: understanding customer needs; stating the problem; specifying requirements; defining performance and cost measures, prescribing tests, validating requirements, conducting design reviews, exploring alternative concepts, sensitivity analyses, functional decomposition, system design, designing and managing interfaces, system integration, total system test, configuration management, risk management, reliability analysis; total quality management; project management; and documentation. Material for this paper was gathered from senior Systems Engineers at Sandia National Laboratories.

  3. Photovoltaic systems and applications

    Energy Technology Data Exchange (ETDEWEB)

    1982-01-01

    Abstracts are given of presentations given at a project review meeting held at Albuquerque, NM. The proceedings cover the past accomplishments and current activities of the Photovoltaic Systems Research, Balance-of-System Technology Development and System Application Experiments Projects at Sandia National Laboratories. The status of intermediate system application experiments and residential system analysis is emphasized. Some discussion of the future of the Photovoltaic Program in general, and the Sandia projects in particular is also presented.

  4. SQL injection detection system

    OpenAIRE

    Vargonas, Vytautas

    2017-01-01

    SQL injection detection system Programmers do not always ensure security of developed systems. That is why it is important to look for solutions outside being reliant on developers. In this work SQL injection detection system is proposed. The system analyzes HTTP request parameters and detects intrusions. It is based on unsupervised machine learning. Trained by regular request data system detects outlier user parameters. Since training is not reliant on previous knowledge of SQL injections, t...

  5. Multiprocessor data acquisition system

    International Nuclear Information System (INIS)

    Haumann, J.R.; Crawford, R.K.

    1987-01-01

    A multiprocessor data acquisition system has been built to replace the single processor systems at the Intense Pulsed Neutron Source (IPNS) at Argonne National Laboratory. The multiprocessor system was needed to accommodate the higher data rates at IPNS brought about by improvements in the source and changes in instrument configurations. This paper describes the hardware configuration of the system and the method of task sharing and compares results to the single processor system

  6. Intrusion detection system elements

    International Nuclear Information System (INIS)

    Eaton, M.J.; Mangan, D.L.

    1980-09-01

    This report highlights elements required for an intrusion detection system and discusses problems which can be encountered in attempting to make the elements effective. Topics discussed include: sensors, both for exterior detection and interior detection; alarm assessment systems, with the discussion focused on video assessment; and alarm reporting systems, including alarm communication systems and dislay/console considerations. Guidance on careful planning and design of a new or to-be-improved system is presented

  7. Licensing open spectrum systems

    OpenAIRE

    Vázquez, Miguel Angel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A.

    2012-01-01

    This paper studies how the spectrum regulation could change in the future open spectrum communication systems. Due to their huge success in short-range communication systems (WiFi, Zigbee, ...), broader area telecommunication providers might mimic the open spectrum philosophy to their systems. Nevertheless, current wireless open spectrum systems are not designed for wide areas and they do not provide QoS to their users. This work proposes an alternative to the nowadays open spectrum systems i...

  8. The control system

    International Nuclear Information System (INIS)

    1988-01-01

    The present control system has matured both in terms of age and capacity. Thus a new system based on a local area network (LAN) is being developed. A pilot project has been started but, owing to difficulties encountered with the present operating system used with the microprocessors, it has become necessary to reconsider the choice of operating system. A recently-released multi-tasking operating system that runs on the existing hardware has been chosen. 1 fig

  9. Structures and semiotic systems

    OpenAIRE

    Somov, Georgij Yu

    2007-01-01

    A model of interrelations between various types of mentation and semiotic systems is suggested. The relations of structures, forms, and signs in different mentation processes and their effect on semiotic systems are discussed. Major features of these systems are examined from the viewpoint of simulation of changes in physical objects and human environment. Most are multilateral and are clearly structures of various systems. Their organizing role in semiotic systemity are evinced through the a...

  10. Systems Theory and Systems Approach to Leadership

    Directory of Open Access Journals (Sweden)

    Dr.Sc. Berim Ramosaj

    2014-06-01

    Full Text Available Systems theory is product of the efforts of many researchers to create an intermediate field of coexistence of all sciences. If not for anything else, because of the magnitude that the use of systemic thinking and systemic approach has taken, it has become undisputed among the theories. Systems theory not only provides a glossary of terms with which researchers from different fields can be understood, but provides a framework for the presentation and interpretation of phenomena and realities. This paper addresses a systematic approach to leadership, as an attempt to dredge leadership and systems theory literature to find the meeting point. Systems approach is not an approach to leadership in terms of a manner of leader’s work, but it’s the leader's determination to factorize in his leadership the external environment and relationships with and among elements. Leader without followers is unable to exercise his leadership and to ensure their conviction he should provide a system, a structure, a purpose, despite the alternative chaos. Systems approach clarifies the thought on the complexity and dynamism of the environment and provides a framework for building ideas. If the general system theory is the skeleton of science (Boulding: 1956, this article aims to replenish it with leadership muscles by prominent authors who have written on systems theory and leadership, as well as through original ideas. In this work analytical methods were used (by analyzing approaches individually as well as synthetic methods (by assaying individual approaches in context of entirety. The work is a critical review of literature as well as a deductive analysis mingled with models proposed by authors through inductive analysis. Meta-analysis has been used to dissect the interaction and interdependence between leadership approaches.

  11. Simulación de sistemas eléctricos con cargas no lineales y variantes en el tiempo Simulation of electric systems with non-linear and time-variant loads

    Directory of Open Access Journals (Sweden)

    William Carvajal Carreño

    2011-06-01

    Full Text Available En este artículo se propone una metodología, implementada en un programa de computador por medio de una interfase gráfica con el usuario (GUI, que permite simular redes eléctricas con elementos no lineales (principalmente convertidores de potencia, tanto en el dominio del tiempo como en el dominio de la frecuencia. El método propuesto combina dos tipos de análisis en una herramienta flexible, de forma que se puedan aprovechar las ventajas de cada uno de ellos, y que permita analizar sistemas lineales y no lineales en el dominio del tiempo, sistemas lineales en el dominio de la frecuencia y sistemas mixtos utilizando este método híbrido. La herramienta es un instrumento de cálculo versátil y completo que puede ser usado de una manera sencilla, para los estudios de análisis de propagación de armónicos en las redes eléctricas. Se presentan ejemplos extraídos de la bibliografía utilizada en cursos de sistemas de potencia, circuitos eléctricos y electrónica de potencia, así como sistemas de prueba para análisis de cargas no lineales o variantes en el tiempo, generados como marco de referencia para las simulaciones de armónicos. Se analizan los resultados y se hacen observaciones acerca de las características de convergencia y estabilidad algorítmica del método propuesto. Dada la complejidad y carga computacional del análisis del método híbrido propuesto, se han seleccionado modelos de elementos, modelos de los componentes del sistema y algoritmos apropiados, para que la solución del problema se realice dentro de límites razonables de tiempo de simulación y consumo de recursos del equipo de cómputo.This paper deals with a methodology implemented in a computer program with a Graphic User Interface (GUI that allows us to simulate electrical networks (mainly power converters with non linear elements. The proposed approach mixes two analysis types in a flexible tool, in that way, we can take advantage of the features of each

  12. Modeling Power Systems as Complex Adaptive Systems

    Energy Technology Data Exchange (ETDEWEB)

    Chassin, David P.; Malard, Joel M.; Posse, Christian; Gangopadhyaya, Asim; Lu, Ning; Katipamula, Srinivas; Mallow, J V.

    2004-12-30

    Physical analogs have shown considerable promise for understanding the behavior of complex adaptive systems, including macroeconomics, biological systems, social networks, and electric power markets. Many of today's most challenging technical and policy questions can be reduced to a distributed economic control problem. Indeed, economically based control of large-scale systems is founded on the conjecture that the price-based regulation (e.g., auctions, markets) results in an optimal allocation of resources and emergent optimal system control. This report explores the state-of-the-art physical analogs for understanding the behavior of some econophysical systems and deriving stable and robust control strategies for using them. We review and discuss applications of some analytic methods based on a thermodynamic metaphor, according to which the interplay between system entropy and conservation laws gives rise to intuitive and governing global properties of complex systems that cannot be otherwise understood. We apply these methods to the question of how power markets can be expected to behave under a variety of conditions.

  13. Design of combi systems

    DEFF Research Database (Denmark)

    Andersen, Elsa; Shah, Louise Jivan; Furbo, Simon

    2001-01-01

    Investigations have shown that the thermal performance of Danish combi systems is a subject of large variations from system to system. Some systems are well performing, however, more systems have a poor performance. [Ellehauge K et al (2000)]. Most of the combined systems that are installed...... is determined. The calculations are based on the simulation program TrnSys [Klein S.A et al. (1996)] and weather data from the Danish Design Reference Year, DRY. The paper will present and compare measured and calculated thermal performances and solar fractions of different combi systems and the main reasons...... in Denmark correspond to the system illustrated in Figure1. The control system operates the three-way valve in the solar collector circuit so solar heat is supplied either to the storage tank or to the heat exchanger between the collector loop and the space-heating loop. [Ellehauge K, ShahL.J. (2000...

  14. System performance optimization

    International Nuclear Information System (INIS)

    Bednarz, R.J.

    1978-01-01

    The System Performance Optimization has become an important and difficult field for large scientific computer centres. Important because the centres must satisfy increasing user demands at the lowest possible cost. Difficult because the System Performance Optimization requires a deep understanding of hardware, software and workload. The optimization is a dynamic process depending on the changes in hardware configuration, current level of the operating system and user generated workload. With the increasing complication of the computer system and software, the field for the optimization manoeuvres broadens. The hardware of two manufacturers IBM and CDC is discussed. Four IBM and two CDC operating systems are described. The description concentrates on the organization of the operating systems, the job scheduling and I/O handling. The performance definitions, workload specification and tools for the system stimulation are given. The measurement tools for the System Performance Optimization are described. The results of the measurement and various methods used for the operating system tuning are discussed. (Auth.)

  15. Rover waste assay system

    International Nuclear Information System (INIS)

    Akers, D.W.; Stoots, C.M.; Kraft, N.C.; Marts, D.J.

    1997-01-01

    The Rover Waste Assay System (RWAS) is a nondestructive assay system designed for the rapid assay of highly-enriched 235 U contaminated piping, tank sections, and debris from the Rover nuclear rocket fuel processing facility at the Idaho Chemical Processing Plant. A scanning system translates a NaI(Tl) detector/collimator system over the structural components where both relative and calibrated measurements for 137 Cs are made. Uranium-235 concentrations are in operation and is sufficiently automated that most functions are performed by the computer system. These functions include system calibration, problem identification, collimator control, data analysis, and reporting. Calibration of the system was done through a combination of measurements on calibration standards and benchmarked modeling. A description of the system is presented along with the methods and uncertainties associated with the calibration and analysis of the system for components from the Rover facility. 4 refs., 2 figs., 4 tabs

  16. ITER cooling systems

    International Nuclear Information System (INIS)

    Natalizio, A.; Hollies, R.E.; Sochaski, R.O.; Stubley, P.H.

    1992-06-01

    The ITER reference system uses low-temperature water for heat removal and high-temperature helium for bake-out. As these systems share common equipment, bake-out cannot be performed until the cooling system is drained and dried, and the reactor cannot be started until the helium has been purged from the cooling system. This study examines the feasibility of using a single high-temperature fluid to perform both heat removal and bake-out. The high temperature required for bake-out would also be in the range for power production. The study examines cost, operational benefits, and impact on reactor safety of two options: a high-pressure water system, and a low-pressure organic system. It was concluded that the cost savings and operational benefits are significant; there are no significant adverse safety impacts from operating either the water system or the organic system; and the capital costs of both systems are comparable

  17. Micro Information Systems

    DEFF Research Database (Denmark)

    Ulslev Pedersen, Rasmus; Kühn Pedersen, Mogens

    2014-01-01

    such as medical and manufacturing. These new sensor applications have implications for information systems (IS) and, the authors visualize this new class of information systems as fractals growing from an established class of systems; namely that of information systems (IS). The identified applications...... and implications are used as an empirical basis for creating a model for these small new information systems. Such sensor systems are called embedded systems in the technical sciences, and the authors want to couple it with general IS. They call the merger of these two important research areas (IS and embedded...... systems) for micro information systems (micro-IS). It is intended as a new research field within IS research. An initial framework model is established, which seeks to capture both the possibilities and constraints of this new paradigm, while looking simultaneously at the fundamental IS and ICT aspects...

  18. Nonlinearity of colloid systems oxyhydrate systems

    CERN Document Server

    Sucharev, Yuri I

    2008-01-01

    The present monograph is the first systematic study of the non-linear characteristic of gel oxy-hydrate systems involving d- and f- elements. These are the oxyhydrates of rare-earth elements and oxides - hydroxides of d- elements (zirconium, niobium, titanium, etc.) The non-linearity of these gel systems introduces fundamental peculiarities into their structure and, consequently, their properties. The polymer-conformational diversity of energetically congenial gel fragments, which continu-ously transform under the effect of, for instance, system dissipation heat, is central to the au-thor's hy

  19. Embedded systems handbook networked embedded systems

    CERN Document Server

    Zurawski, Richard

    2009-01-01

    Considered a standard industry resource, the Embedded Systems Handbook provided researchers and technicians with the authoritative information needed to launch a wealth of diverse applications, including those in automotive electronics, industrial automated systems, and building automation and control. Now a new resource is required to report on current developments and provide a technical reference for those looking to move the field forward yet again. Divided into two volumes to accommodate this growth, the Embedded Systems Handbook, Second Edition presents a comprehensive view on this area

  20. Photovoltaic systems engineering

    CERN Document Server

    Messenger, Roger A

    2010-01-01

    BackgroundPopulation and Energy DemandEnergy UnitsCurrent World Energy Use PatternsExponential GrowthHubbert's Gaussian ModelNet Energy, Btu Economics, and the Test for SustainabilityDirect Conversion of Sunlight to Electricity with PhotovoltaicsThe SunThe Solar SpectrumThe Effect of Atmosphere on SunlightSunlight SpecificsCapturing SunlightIntroduction to PV SystemsThe PV CellThe PV ModuleThe PV ArrayEnergy StoragePV System LoadsPV System AvailabilityAssociated System Electronic ComponentsGeneratorsBalance of System (BOS) ComponentsGrid-Connected Utility-Interactive PV SystemsApplicable Codes and StandardsDesign Considerations for Straight Grid-Connected PV SystemsDesign of a System Based on Desired Annual System PerformanceDesign of a System Based on Available Roof SpaceDesign of a Microinverter-Based SystemDesign of a Nominal 21 kW System that Feeds a Three-Phase Distribution PanelDesign of a Nominal 250 kW SystemSystem Performance MonitoringMechanical ConsiderationsImportant Properties of MaterialsEstabli...

  1. VALIDATING THE BEHAVIOR OF A SUPERVISED SYSTEM USING PETRI NETS

    Directory of Open Access Journals (Sweden)

    CARLOS ARTURO PARRA ORTEGA

    2012-01-01

    Full Text Available Un aspecto fundamental de los sistemas de producción es la validación de su comportamiento. Paraobtener este comportamiento, se recurre frecuentemente a modelos matemáticos tales como redes de Petri, con el fin de validar su comportamiento concurrente, presencia/ausencia de bloqueos, y sincronización de actividades, entre otros aspectos. A pesar de sus ventajas, el uso de redes de Petri no permite evaluar otros aspectos que son importantes en los procesos de manufactura, así como su gestión. Por tal motivo se recurre a la simulación de sistemas estocásticos y a la tecnología de agentes para obtener otros índices de desempeño. En este artículo se propone una combinación de redes de Petri, sistemas multi-agentes y sistemas estocásticos en un método propuesto para validar el comportamiento de los sistemas de producción, y se presenta como este método es usado en un ejemplo académico de manufactura.

  2. EPICS system: an overview

    International Nuclear Information System (INIS)

    Bartlett, J.F.; Bobbitt, J.S.; Kramper, B.J.; Lahey, T.E.; MacKinnon, B.A.; West, R.E.

    1984-02-01

    This paper presents an overview of the EPICS control system at FERMILAB. EPICS is a distributed, multi-user, interactive system for the control and monitoring of particle beamlines at a high-energy experimental physics laboratory. The overview discusses the operating environment of the control system, the requirements which determined the design decisions, the hardware and software configurations, and plans for the future growth and enhancement of the present system. This paper is the first of three related papers on the EPICS system. The other two cover (1) the system structure and user interface and (2) RSX implementation issues

  3. Adaptive intrusion data system

    International Nuclear Information System (INIS)

    Johnson, C.S.

    1976-01-01

    An Adaptive Intrusion Data System (AIDS) was developed to collect data from intrusion alarm sensors as part of an evaluation system to improve sensor performance. AIDS is a unique digital data compression, storage, and formatting system. It also incorporates capability for video selection and recording for assessment of the sensors monitored by the system. The system is software reprogrammable to numerous configurations that may be utilized for the collection of environmental, bi-level, analog and video data. The output of the system is digital tapes formatted for direct data reduction on a CDC 6400 computer, and video tapes containing timed tagged information that can be correlated with the digital data

  4. Cooperating systems: Layered MAS

    Science.gov (United States)

    Rochowiak, Daniel

    1990-01-01

    Distributed intelligent systems can be distinguished by the models that they use. The model developed focuses on layered multiagent system conceived of as a bureaucracy in which a distributed data base serves as a central means of communication. The various generic bureaus of such a system is described and a basic vocabulary for such systems is presented. In presenting the bureaus and vocabularies, special attention is given to the sorts of reasonings that are appropriate. A bureaucratic model has a hierarchy of master system and work group that organizes E agents and B agents. The master system provides the administrative services and support facilities for the work groups.

  5. Hydraulic Yaw System

    DEFF Research Database (Denmark)

    Stubkier, Søren; Pedersen, Henrik C.; Mørkholt, M.

    system and rotor shaft when utilizing the soft yaw drive concept compared to the original stiff yaw system. The physical demands of the hydraulic yaw system are furthermore examined for a life time of 20 years. Based on the extrapolated loads, the duty cycles show that it is possible to construct...... a hydraulic soft yaw system, which is able to reduce the loads on the wind turbine significantly. A full scale hydraulic yaw test rig is available for experiments and tests. The test rig is presented as well as the system schematics of the hydraulic yaw system....

  6. Reliable computer systems.

    Science.gov (United States)

    Wear, L L; Pinkert, J R

    1993-11-01

    In this article, we looked at some decisions that apply to the design of reliable computer systems. We began with a discussion of several terms such as testability, then described some systems that call for highly reliable hardware and software. The article concluded with a discussion of methods that can be used to achieve higher reliability in computer systems. Reliability and fault tolerance in computers probably will continue to grow in importance. As more and more systems are computerized, people will want assurances about the reliability of these systems, and their ability to work properly even when sub-systems fail.

  7. EPICS system: an overview

    Energy Technology Data Exchange (ETDEWEB)

    Bartlett, J.F.; Bobbitt, J.S.; Kramper, B.J.; Lahey, T.E.; MacKinnon, B.A.; West, R.E.

    1984-02-01

    This paper presents an overview of the EPICS control system at FERMILAB. EPICS is a distributed, multi-user, interactive system for the control and monitoring of particle beamlines at a high-energy experimental physics laboratory. The overview discusses the operating environment of the control system, the requirements which determined the design decisions, the hardware and software configurations, and plans for the future growth and enhancement of the present system. This paper is the first of three related papers on the EPICS system. The other two cover (1) the system structure and user interface and (2) RSX implementation issues.

  8. Braking System Integration in Dual Mode Systems

    Science.gov (United States)

    1974-05-01

    An optimal braking system for Dual Mode is a complex product of vast number of multivariate, interdependent parameters that encompass on-guideway and off-guideway operation as well as normal and emergency braking. : Details of, and interralations amo...

  9. System of Systems Technology Readiness Assessment

    National Research Council Canada - National Science Library

    Majumdar, WindyJoy S

    2007-01-01

    ...). In many cases, advanced technologies must be matured simultaneously by multiple systems to support the degree of interoperability and/or integration required Current DoD guidance with respect...

  10. Water Fluoridation Reporting System (Public Water Systems)

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Water Fluoridation Reporting System (WFRS) has been developed to provide tools to assist states in managing fluoridation programs. WFRS is designed to track all...

  11. Combat Systems Department Employee Recognition System

    National Research Council Canada - National Science Library

    1996-01-01

    This handbook contains two types of information: guidelines and instructions. The guidelines provide a foundation of purpose, assumptions, principles, expectations and attributes the Employee Recognition System is designed to reflect...

  12. Business System Planning Project System Requirements Specification

    Energy Technology Data Exchange (ETDEWEB)

    NELSON, R.E.

    2000-09-08

    The purpose of the Business Systems Planning Project System Requirements Specification (SRS) is to provide the outline and contents of the requirements for the CH2M HILL Hanford Group, Inc. (CHG) integrated business and technical information systems. The SRS will translate proposed objectives into the statement of the functions that are to be performed and data and information flows that they require. The requirements gathering methodology will use (1) facilitated group requirement sessions; (2) individual interviews; (3) surveys; and (4) document reviews. The requirements will be verified and validated through coordination of the technical requirement team and CHG Managers. The SRS document used the content and format specified in Lockheed Martin Services, Inc. Organization Standard Software Practices in conjunction with the Institute of Electrical and Electronics Engineers Standard 8340-1984 for Systems Requirements Documents.

  13. Information system development activities and inquiring systems

    DEFF Research Database (Denmark)

    Carugati, Andrea

    2008-01-01

    This article presents a framework that maps information system development (ISD) activities on systems for the creation of knowledge. This work addresses the relevant and persisting problem of improving the chances of ISD success. The article builds upon previous research on knowledge aspects...... provides a new way to see the development of a system in terms of the knowledge created in the process. The main practical implication of the framework is that it improves the managers' ability to guide ISD activities as knowledge activities embedded in a knowledge process, a crucial element in development...... of ISD, abandoning the idea of a monolithic approach to knowledge and presenting a pluralistic approach based on the idea that different inquiring systems can support micro-level ISD activities. The article is divided into two parts. The first part presents the theoretical development of the framework...

  14. Test System Impact on System Availability

    DEFF Research Database (Denmark)

    Pau, L. F.

    1987-01-01

    The specifications are presented for an imperfect automatic test system (ATS) (test frequency distribution, reliability, false alarm rate, nondetection rate) in order to account for the availability, readiness, mean time between unscheduled repairs (MTBUR), reliability, and maintenance of the sys......The specifications are presented for an imperfect automatic test system (ATS) (test frequency distribution, reliability, false alarm rate, nondetection rate) in order to account for the availability, readiness, mean time between unscheduled repairs (MTBUR), reliability, and maintenance...... of the system subject to monitoring and test. A time-dependent Markov model is presented, and applied in three cases, with examples of numerical results provided for preventive maintenance decisions, design of an automatic test system, buffer testing in computers, and data communications....

  15. User Registration Systems for Distributed Systems

    Science.gov (United States)

    Murphy, K. J.; Cechini, M.; Pilone, D.; Mitchell, A.

    2010-12-01

    As NASA’s Earth Observing System Data and Information System (EOSDIS) systems have evolved over the years, most of the EOSDIS data are now available to users via anonymous on-line access. Although the changes have improved the dissemination efficiency of earth science data, the anonymous access has made it difficult to characterize users, capture metrics on the value of EOSDIS and provide customized services that benefit users. As the number of web-based applications continues to grow, data centers and application providers have implemented their own user registration systems and provided new tools and interfaces for their registered users. This has led to the creation of independent registration systems for accessing data and interacting with online tools and services. The user profile information maintained at each of these registration systems is not consistent and the registration enforcement varies by system as well. This problem is in no way unique to EOSDIS and represents a general challenge to the distributed computing community. In a study done in 2007(http://www2007.org/papers/paper620.pd), the average user has approximately 7 passwords for about 25 accounts and enters a password 8 times a day. These numbers have only increased in the last three years. To try and address this, a number of solutions have been offered including Single Sign-On solutions using a common backend like Microsoft Active Directory or an LDAP server, trust based identity providers like OpenID, and various forms of authorization delegation like OAuth or SAML/XACML. This talk discusses the differences between authentication and authorization, the state of the more popular user registration solutions available for distributed use, and some of the technical and policy drivers that need to be considered when incorporating a user registration system into your application.

  16. SUBSURFACE EMPLACEMENT TRANSPORTATION SYSTEM

    International Nuclear Information System (INIS)

    Wilson, T.; Novotny, R.

    1999-01-01

    The objective of this analysis is to identify issues and criteria that apply to the design of the Subsurface Emplacement Transportation System (SET). The SET consists of the track used by the waste package handling equipment, the conductors and related equipment used to supply electrical power to that equipment, and the instrumentation and controls used to monitor and operate those track and power supply systems. Major considerations of this analysis include: (1) Operational life of the SET; (2) Geometric constraints on the track layout; (3) Operating loads on the track; (4) Environmentally induced loads on the track; (5) Power supply (electrification) requirements; and (6) Instrumentation and control requirements. This analysis will provide the basis for development of the system description document (SDD) for the SET. This analysis also defines the interfaces that need to be considered in the design of the SET. These interfaces include, but are not limited to, the following: (1) Waste handling building; (2) Monitored Geologic Repository (MGR) surface site layout; (3) Waste Emplacement System (WES); (4) Waste Retrieval System (WRS); (5) Ground Control System (GCS); (6) Ex-Container System (XCS); (7) Subsurface Electrical Distribution System (SED); (8) MGR Operations Monitoring and Control System (OMC); (9) Subsurface Facility System (SFS); (10) Subsurface Fire Protection System (SFR); (11) Performance Confirmation Emplacement Drift Monitoring System (PCM); and (12) Backfill Emplacement System (BES)

  17. System and method for creating expert systems

    Science.gov (United States)

    Hughes, Peter M. (Inventor); Luczak, Edward C. (Inventor)

    1998-01-01

    A system and method provides for the creation of a highly graphical expert system without the need for programming in code. An expert system is created by initially building a data interface, defining appropriate Mission, User-Defined, Inferred, and externally-generated GenSAA (EGG) data variables whose data values will be updated and input into the expert system. Next, rules of the expert system are created by building appropriate conditions of the rules which must be satisfied and then by building appropriate actions of rules which are to be executed upon corresponding conditions being satisfied. Finally, an appropriate user interface is built which can be highly graphical in nature and which can include appropriate message display and/or modification of display characteristics of a graphical display object, to visually alert a user of the expert system of varying data values, upon conditions of a created rule being satisfied. The data interface building, rule building, and user interface building are done in an efficient manner and can be created without the need for programming in code.

  18. Operating System for Runtime Reconfigurable Multiprocessor Systems

    Directory of Open Access Journals (Sweden)

    Diana Göhringer

    2011-01-01

    Full Text Available Operating systems traditionally handle the task scheduling of one or more application instances on processor-like hardware architectures. RAMPSoC, a novel runtime adaptive multiprocessor System-on-Chip, exploits the dynamic reconfiguration on FPGAs to generate, start and terminate hardware and software tasks. The hardware tasks have to be transferred to the reconfigurable hardware via a configuration access port. The software tasks can be loaded into the local memory of the respective IP core either via the configuration access port or via the on-chip communication infrastructure (e.g. a Network-on-Chip. Recent-series of Xilinx FPGAs, such as Virtex-5, provide two Internal Configuration Access Ports, which cannot be accessed simultaneously. To prevent conflicts, the access to these ports as well as the hardware resource management needs to be controlled, e.g. by a special-purpose operating system running on an embedded processor. For that purpose and to handle the relations between temporally and spatially scheduled operations, the novel approach of an operating system is of high importance. This special purpose operating system, called CAP-OS (Configuration Access Port-Operating System, which will be presented in this paper, supports the clients using the configuration port with the services of priority-based access scheduling, hardware task mapping and resource management.

  19. Business system: Sustainable development and anticipatory system

    Directory of Open Access Journals (Sweden)

    Vojko Potočan

    2002-01-01

    Full Text Available The existence and development of humankind depends mainly upon the co-ordinated operation of all areas and levels of human activity. However, in theory and in practice there is no model of operation, which would provide a harmonized and target oriented development. A partial solution is offered by sustainable development, which tries to define and carry out common goals of mankind with a harmonized implementation of human activities at all levels of its living and behaviour. Companies belong to central institutions of modern society which essentially co–create the sustainability of society. The company’s endeavour by simulation to prepare models of their goals concerning their internal and external environment. On the base of systemic treatment, we can define companies as business system, which can survive in a log-run only on the basis of sustainable development. The business system can also be supported by the application of the anticipatory systems. The anticipatory systems can be, in this sense, understood as an entity of the methodological approach, techniques and modes of work. Their characteristics have, a direct impact on the determination of goals, on the orientation of operation, and hence on the achievement of the business system results.

  20. Visitor Registration System

    Data.gov (United States)

    US Agency for International Development — Visitor Registration System (VRS) streamlines visitor check-in and check-out process for expediting visitors into USAID. The system captures visitor information...

  1. Saturated Switching Systems

    CERN Document Server

    Benzaouia, Abdellah

    2012-01-01

    Saturated Switching Systems treats the problem of actuator saturation, inherent in all dynamical systems by using two approaches: positive invariance in which the controller is designed to work within a region of non-saturating linear behaviour; and saturation technique which allows saturation but guarantees asymptotic stability. The results obtained are extended from the linear systems in which they were first developed to switching systems with uncertainties, 2D switching systems, switching systems with Markovian jumping and switching systems of the Takagi-Sugeno type. The text represents a thoroughly referenced distillation of results obtained in this field during the last decade. The selected tool for analysis and design of stabilizing controllers is based on multiple Lyapunov functions and linear matrix inequalities. All the results are illustrated with numerical examples and figures many of them being modelled using MATLAB®. Saturated Switching Systems will be of interest to academic researchers in con...

  2. Voluntary Service System (VSS)

    Data.gov (United States)

    Department of Veterans Affairs — Voluntary Service System (VSS) is a national-level application which replaced the site-based Voluntary Timekeeping System (VTK). VTK was used for many years at the...

  3. The remote control system

    International Nuclear Information System (INIS)

    Jansweijer, P.P.M.

    1988-01-01

    The remote-control system is applied in order to control various signals in the car of the spectrometer at distance. The construction (hardware and software) as well as the operation of the system is described. (author). 20 figs

  4. VT DSL Systems 2006

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The VT DSL Broadband System dataset (DSL2006) includes polygons depicting the extent of Vermont's DSL broadband system as of 12/31/2006. This data...

  5. Drinking Water Distribution Systems

    Science.gov (United States)

    Learn about an overview of drinking water distribution systems, the factors that degrade water quality in the distribution system, assessments of risk, future research about these risks, and how to reduce cross-connection control risk.

  6. Optical Airborne Tracker System

    Data.gov (United States)

    National Aeronautics and Space Administration — The Optical Airborne Tracker System (OATS) is an airborne dual-axis optical tracking system capable of pointing at any sky location or ground target.  The objectives...

  7. Online data processing system

    International Nuclear Information System (INIS)

    Nakahara, Yoshinori; Yagi, Hideyuki; Yamada, Takayuki

    1979-02-01

    A pulse height analyzer terminal system PHATS has been developed for online data processing via JAERI-TOKAI computer network. The system is controled by using a micro-computer MICRO-8 which was developed for the JAERI-TOKAI network. The system program consists of two subprograms, online control system ONLCS and pulse height analyzer control system PHACS. ONLCS links the terminal with the conversational programming system of FACOM 230/75 through the JAERI-TOKAI network and controls data processing in TSS and remote batch modes. PHACS is used to control INPUT/OUTPUT of data between pulse height analyzer and cassette-MT or typewriter. This report describes the hardware configuration and the system program in detail. In the appendix, explained are real time monitor, type of message, PEX to PEX protocol and Host to Host protocol, required for the system programming. (author)

  8. Avian respiratory system disorders

    Science.gov (United States)

    Olsen, Glenn H.

    1989-01-01

    Diagnosing and treating respiratory diseases in avian species requires a basic knowledge about the anatomy and physiology of this system in birds. Differences between mammalian and avian respiratory system function, diagnosis, and treatment are highlighted.

  9. Semiotic labelled deductive systems

    Energy Technology Data Exchange (ETDEWEB)

    Nossum, R.T. [Imperial College of Science, Technology and Medicine, London (United Kingdom)

    1996-12-31

    We review the class of Semiotic Models put forward by Pospelov, as well as the Labelled Deductive Systems developed by Gabbay, and construct an embedding of Semiotic Models into Labelled Deductive Systems.

  10. Cross Disciplinary Biometric Systems

    CERN Document Server

    Liu, Chengjun

    2012-01-01

    Cross disciplinary biometric systems help boost the performance of the conventional systems. Not only is the recognition accuracy significantly improved, but also the robustness of the systems is greatly enhanced in the challenging environments, such as varying illumination conditions. By leveraging the cross disciplinary technologies, face recognition systems, fingerprint recognition systems, iris recognition systems, as well as image search systems all benefit in terms of recognition performance.  Take face recognition for an example, which is not only the most natural way human beings recognize the identity of each other, but also the least privacy-intrusive means because people show their face publicly every day. Face recognition systems display superb performance when they capitalize on the innovative ideas across color science, mathematics, and computer science (e.g., pattern recognition, machine learning, and image processing). The novel ideas lead to the development of new color models and effective ...

  11. Health System Measurement Project

    Data.gov (United States)

    U.S. Department of Health & Human Services — The Health System Measurement Project tracks government data on critical U.S. health system indicators. The website presents national trend data as well as detailed...

  12. Designing automatic resupply systems.

    Science.gov (United States)

    Harding, M L

    1999-02-01

    This article outlines the process for designing and implementing autoresupply systems. The planning process includes determination of goals and appropriate participation. Different types of autoresupply mechanisms include kanban, breadman, consignment, systems contracts, and direct shipping from an MRP schedule.

  13. Handbook of systems toxicology

    National Research Council Canada - National Science Library

    Casciano, Daniel A; Sahu, Saura C

    2011-01-01

    "In the first handbook to comprehensively cover the emerging area of systems toxicology, the Handbook of Systems Toxicology provides an authoritative compilation of up-to-date developments presented...

  14. Organizing Systemic Innovation

    NARCIS (Netherlands)

    F.P.H. Jaspers (Ferdinand)

    2009-01-01

    textabstractSystemic innovation refers to product development activities that involve the change of multiple interdependent components. Unlike autonomous innovation, which refers to components that change independently, systemic innovation is for many firms the norm rather than the exception. This

  15. Renewable Energy Tracking Systems

    Science.gov (United States)

    Renewable energy generation ownership can be accounted through tracking systems. Tracking systems are highly automated, contain specific information about each MWh, and are accessible over the internet to market participants.

  16. Inductive Monitoring System (IMS)

    Data.gov (United States)

    National Aeronautics and Space Administration — IMS: Inductive Monitoring System The Inductive Monitoring System (IMS) is a tool that uses a data mining technique called clustering to extract models of normal...

  17. The Core Knowledge System

    National Research Council Canada - National Science Library

    Strat, Thomas M; Smith, Grahame B

    1987-01-01

    This document contains an in-depth description of the Core Knowledge System (CKS)-an integrative environment for the many functions that must be performed by sensor-based autonomous and semi-autonomous systems...

  18. Immune System and Disorders

    Science.gov (United States)

    Your immune system is a complex network of cells, tissues, and organs that work together to defend against germs. It ... t, to find and destroy them. If your immune system cannot do its job, the results can be ...

  19. Pneumonia - weakened immune system

    Science.gov (United States)

    ... medlineplus.gov/ency/article/000093.htm Pneumonia - weakened immune system To use the sharing features on this page, ... fighting off infection because of problems with the immune system. This type of disease is called "pneumonia in ...

  20. Geographical information systems

    DEFF Research Database (Denmark)

    Möller, Bernd

    2004-01-01

    The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management.......The chapter gives an introduction to Geographical Information Systems (GIS) with particular focus on their application within environmental management....

  1. Systems engineering management plan

    International Nuclear Information System (INIS)

    Conner, C.W.

    1985-10-01

    The purpose of this Systems Engineering Management Plan (SEMP) is to prescribe the systems engineering procedures to be implemented at the Program level and the minimum requirements for systems engineering at the Program-element level. The Program level corresponds to the Director, OCRWM, or to the organizations within OCRWM to which the Director delegates responsibility for the development of the System and for coordinating and integrating the activities at the Program-element level. The Office of Policy and Outreach (OPO) and the Office of Resource Management (ORM) support the Director at the Program level. The Program-element level corresponds to the organizations within OCRWM (i.e., the Office of Geologic Repositories (OGR) and the Office of Storage and Transportation Systems (OSTS)) with overall responsibility for developing the System elements - that is, the mined geologic disposal system (MGDS), monitored retrievable storage (MRS) (if approved by Congress), and the transportation system

  2. Mobile intelligent autonomous systems

    National Research Council Canada - National Science Library

    Raol, J. R; Gopal, Ajith K

    2013-01-01

    "Written for systems, mechanical, aero, electrical, civil, industrial, and robotics engineers, this book covers robotics from a theoretical and systems point of view, with an emphasis on the sensor...

  3. BioSystems

    Data.gov (United States)

    U.S. Department of Health & Human Services — The NCBI BioSystems Database provides integrated access to biological systems and their component genes, proteins, and small molecules, as well as literature...

  4. Multiuser MIMO Systems

    National Research Council Canada - National Science Library

    Poor, H. V

    2004-01-01

    .... This talk will discuss implications of using MIMO systems in multiple-access networks. The main focus of the talk will be on receiver signal processing for such systems and in particular on multiuser detection and related issues...

  5. Multiple System Atrophy (MSA)

    Science.gov (United States)

    Multiple system atrophy (MSA) Overview Multiple system atrophy (MSA) is a rare, degenerative neurological disorder affecting your body's involuntary (autonomic) functions, including blood pressure, breathing, bladder function and muscle ...

  6. Cardiac conduction system

    Science.gov (United States)

    The cardiac conduction system is a group of specialized cardiac muscle cells in the walls of the heart that send signals to the ... contract. The main components of the cardiac conduction system are the SA node, AV node, bundle of ...

  7. Gleason grading system

    Science.gov (United States)

    ... medlineplus.gov/ency/patientinstructions/000920.htm Gleason grading system To use the sharing features on this page, ... score of between 5 and 7. Gleason Grading System Sometimes, it can be hard to predict how ...

  8. Central nervous system

    Science.gov (United States)

    The central nervous system is composed of the brain and spinal cord. Your brain and spinal cord serve as the main "processing center" for your entire nervous system. They control all the workings of your body.

  9. Integrated Reporting Information System -

    Data.gov (United States)

    Department of Transportation — The Integrated Reporting Information System (IRIS) is a flexible and scalable web-based system that supports post operational analysis and evaluation of the National...

  10. Pressurized water reactor systems

    International Nuclear Information System (INIS)

    Meyer, P.J.

    1975-01-01

    Design and mode of operation of the main PWR components are described: reactor core, pressure vessel and internals, cooling systems with pumps and steam generators, ancillary systems, and waste processing. (TK) [de

  11. Lithium battery management system

    Science.gov (United States)

    Dougherty, Thomas J [Waukesha, WI

    2012-05-08

    Provided is a system for managing a lithium battery system having a plurality of cells. The battery system comprises a variable-resistance element electrically connected to a cell and located proximate a portion of the cell; and a device for determining, utilizing the variable-resistance element, whether the temperature of the cell has exceeded a predetermined threshold. A method of managing the temperature of a lithium battery system is also included.

  12. Systems of Innovation

    OpenAIRE

    Soete, Luc; Verspagen, Bart; Weel, Bas ter

    2009-01-01

    We review the literature on national innovation systems. We first focus on the emergence of the concept of innovation systems, reviewing its historical origins and three main flavours (associated to three “founding fathers†of the concept). After this, we discuss how the notion of innovation systems filled a need for providing a broader basis for innovation policy. We conclude with some perspectives on the future of the innovation systems literature.

  13. Audit Management System

    CERN Document Server

    Alconada, Federico

    2015-01-01

    In the need of renewing their system, the Internal Audit department has given a proposal for building a new one. Taking into consideration the problems of their system they elaborated a requirement's list with the functionalities and features they were expecting from the new management system. This new system would be primarily for the use of the Internal Audit staff but it would also support the follow-up of internal audit recommendations by potentially all CERN staff members.

  14. Systemic Risk and Returns

    OpenAIRE

    Boman, Arthur Lee

    2013-01-01

    I solve a consumption based model, with interfirm systemic risk, for a portfolio optimization with arbitrary return distributions and endogenous stochastic discount factor (sdf). The model highlights a new systemic risk: systemic allocation risk. In contrast to the case without systemic risk, the market and planner allocate capital differently. The externality causes the planner to reduce investment in the risky firm. The market, modeled as a representative agent, does not just ignore the ext...

  15. Wood Species Recognition System

    OpenAIRE

    Bremananth R; Nithya B; Saipriya R

    2009-01-01

    The proposed system identifies the species of the wood using the textural features present in its barks. Each species of a wood has its own unique patterns in its bark, which enabled the proposed system to identify it accurately. Automatic wood recognition system has not yet been well established mainly due to lack of research in this area and the difficulty in obtaining the wood database. In our work, a wood recognition system has been designed based on pre-processing te...

  16. Market economic systems

    OpenAIRE

    Pryor, Frederic L.

    2004-01-01

    The new comparative economics has focused on individual institutions, rather than the economic system as a whole. This essay argues that economic systems should be defined in terms of clusters of complementary or covarying institutions. A cluster analysis of OECD countries using data on forty different economic institutions shows that four economic systems characterize these nations. Further, these systems have no significant impact on economic growth or inflation, but they do have an importa...

  17. SSC Cryogenic System

    International Nuclear Information System (INIS)

    Brown, D.P.; Louttit, R.I.; Rode, C.; VanderArend, P.C.

    1985-01-01

    The design of the 4.5 K primary cooling system and higher temperature shield cooling systems for the SSC are described. Typical flow diagrams for the magnet piping systems are presented. Estimated heat loads are given. The systems have been designed to accomodate the great distances, 90 km and up, over which the load will be distributed. Provision has been made for cooldown, warmup, quench recovery and magnet replacement, as well as for steady-state operation

  18. IAEA safeguards information system

    International Nuclear Information System (INIS)

    Nardi, J.

    1984-01-01

    The basic concepts, structure, and operation of the Agency Safeguards Information System is discussed with respect to its role in accomplishing the overall objectives of safeguards. The basis and purposes of the Agency's information system, the structure and flow of information within the Agency's system, the relationship of the components is the Agency system, the requirements of Member States in respect of their reporting to the Agency, and the relationship of accounting data vis-a-vis facility and inspection data are described

  19. Operating system MINIX

    OpenAIRE

    JIRKŮ, Radek

    2012-01-01

    This thesis introduces readers to the MINIX operating system, which was used in the creation of the Linux OS. It discusses the history and development of the system and explains its core and the file system. Also solves MINIX installation and configuration of the virtual machine at each step and deals with disputes that had a creator of Minix creator of Linux. In conclusion, compared with Linux MINIX and summarizes the advantages and disadvantages and the use of the operating system at present.

  20. Hybrid Action Systems

    DEFF Research Database (Denmark)

    Ronkko, Mauno; Ravn, Anders P.

    1997-01-01

    a differential action, which allows differential equations as primitive actions. The extension allows us to model hybrid systems with both continuous and discrete behaviour. The main result of this paper is an extension of such a hybrid action system with parallel composition. The extension does not change...... the original meaning of the parallel composition, and therefore also the ordinary action systems can be composed in parallel with the hybrid action systems....

  1. TMACS system description

    International Nuclear Information System (INIS)

    Scaief, C.C.

    1995-01-01

    This document provides a description of the Tank Monitor and Control System (TMACS). It is intended as an introduction for those persons unfamiliar with the system as well as a reference document for the users, maintenance personnel, and system designers. In addition to describing the system, the document outlines the associated drawing documentation, provides maintenance and spare parts information, and discusses other TMACS documents that provide additional detail

  2. Rainfed intensive crop systems

    DEFF Research Database (Denmark)

    Olesen, Jørgen E

    2014-01-01

    This chapter focuses on the importance of intensive cropping systems in contributing to the world supply of food and feed. The impact of climate change on intensive crop production systems is also discussed.......This chapter focuses on the importance of intensive cropping systems in contributing to the world supply of food and feed. The impact of climate change on intensive crop production systems is also discussed....

  3. System programming languages

    OpenAIRE

    Šmit, Matej

    2016-01-01

    Most operating systems are written in the C programming language. Similar is with system software, for example, device drivers, compilers, debuggers, disk checkers, etc. Recently some new programming languages emerged, which are supposed to be suitable for system programming. In this thesis we present programming languages D, Go, Nim and Rust. We defined the criteria which are important for deciding whether programming language is suitable for system programming. We examine programming langua...

  4. Human Resource Management System

    OpenAIRE

    Navaz, A. S. Syed; Fiaz, A. S. Syed; Prabhadevi, C.; Sangeetha, V.; Gopalakrishnan, S.

    2013-01-01

    The paper titled HUMAN RESOURCE MANAGEMENT SYSTEM is basically concerned with managing the Administrator of HUMAN RESOURCE Department in a company. A Human Resource Management System, refers to the systems and processes at the intersection between human resource management and information technology. It merges HRM as a discipline and in particular its basic HR activities and processes with the information technology field, whereas the programming of data processing systems evolved into standa...

  5. Vacuum system for ISABELLE

    International Nuclear Information System (INIS)

    Hobson, J.P.

    1975-01-01

    An analysis is presented of the proposed vacuum system for the planned ISABELLE storage rings with respect to acceptability and practicality from the vacuum viewport. A comparison is made between the proposed vacuum system and the vacuum system at the CERN ISR, and some comments on various design and operational parameters are made

  6. Flexible energy systems

    DEFF Research Database (Denmark)

    Lund, Henrik

    2003-01-01

    The paper discusses and analyses diffent national strategies and points out key changes in the energy system in order to achieve a system which can benefit from a high percentage of wind and CHP without having surplus production problems, introduced here as a flexible energy system....

  7. IDC System Specification Document.

    Energy Technology Data Exchange (ETDEWEB)

    Clifford, David J.

    2014-12-01

    This document contains the system specifications derived to satisfy the system requirements found in the IDC System Requirements Document for the IDC Reengineering Phase 2 project. Revisions Version Date Author/Team Revision Description Authorized by V1.0 12/2014 IDC Reengineering Project Team Initial delivery M. Harris

  8. Health Information Systems

    International Development Research Centre (IDRC) Digital Library (Canada)

    health information system can mean peoples' basic needs are unmet. Reducing silos and ensuring community input. Through its Governance and Equity in. Health Systems (GEHS) program, IDRC invests in research and training to help low- and middle-income countries strengthen their health information systems. The aim ...

  9. Lofar information system design

    NARCIS (Netherlands)

    Valentijn, E.; Belikov, A. N.

    2009-01-01

    The Lofar Information System is a solution for Lofar Long Term Archive that is capable to store and handle PBs of raw and processed data. The newly created information system is based on Astro-WISE - the information system for wide field astronomy. We review an adaptation of Astro-WISE for the new

  10. Central Dental Evacuation Systems.

    Science.gov (United States)

    1982-05-01

    20 High-Vacuum Oral Evacuation System (HIVAC) for Oral Surgery, Periodontics, and Endodontics Treatment Rooms..................... 20...box-section steel rails. Rubber isolator pads between this frame and the structure floor absorb vibration and prevent its magnification . The inlet...System (HIVAC) for Oral Surgery, Periodontics, and Endodontics Treatment Rooms The HIVAC system is designed to build and sustain high vacuum pressures

  11. LOFAR Information System

    NARCIS (Netherlands)

    Begeman, K.; Belikov, A. N.; Boxhoorn, D. R.; Dijkstra, F.; Holties, H.; Meyer-Zhao, Z.; Renting, G. A.; Valentijn, E. A.; Vriend, W. -J.

    In this paper, we present a newly designed and implemented scientific information system for the LOFAR Long Term Archive. It is a distributed multi-tier storage and data processing system that allows a number of users to process Petabytes of data. The LOFAR Information System is designed on the base

  12. Automated System Marketplace 1994.

    Science.gov (United States)

    Griffiths, Jose-Marie; Kertis, Kimberly

    1994-01-01

    Reports results of the 1994 Automated System Marketplace survey based on responses from 60 vendors. Highlights include changes in the library automation marketplace; estimated library systems revenues; minicomputer and microcomputer-based systems; marketplace trends; global markets and mergers; research needs; new purchase processes; and profiles…

  13. Maternal early warning systems.

    Science.gov (United States)

    Friedman, Alexander M

    2015-06-01

    This article reviews evidence and recommendations for maternal early warning systems designed to reduce severe maternal morbidity and mortality. The clinical rationale for these systems is discussed as is research literature on early warning systems from other fields. Copyright © 2015 Elsevier Inc. All rights reserved.

  14. Personal Food System Mapping

    Science.gov (United States)

    Wilsey, David; Dover, Sally

    2014-01-01

    Personal food system mapping is a practical means to engage community participants and educators in individualized and shared learning about food systems, decisions, and behaviors. Moreover, it is a useful approach for introducing the food system concept, which is somewhat abstract. We developed the approach to capture diversity of personal food…

  15. Polymerase chain reaction system

    Science.gov (United States)

    Benett, William J.; Richards, James B.; Stratton, Paul L.; Hadley, Dean R.; Milanovich, Fred P.; Belgrader, Phil; Meyer, Peter L.

    2004-03-02

    A portable polymerase chain reaction DNA amplification and detection system includes one or more chamber modules. Each module supports a duplex assay of a biological sample. Each module has two parallel interrogation ports with a linear optical system. The system is capable of being handheld.

  16. Functional System Dynamics

    NARCIS (Netherlands)

    Ligterink, N.E.

    2007-01-01

    Functional system dynamics is the analysis, modelling, and simulation of continuous systems usually described by partial differential equations. From the infinite degrees of freedom of such systems only a finite number of relevant variables have to be chosen for a practical model description. The

  17. Operation auxiliary system (SAO)

    International Nuclear Information System (INIS)

    Lolich, J.; Santome, D.; Drexler, J.

    1990-01-01

    This work presents an auxiliary system for nuclear power plants operation (SAO). The development purpose consisted in a computing supervision system to be installed at different sites of a reactor, mainly in the control room. The inclusion of this system to a nuclear power plant minimizes the possibility of human error for the facility operation. (Author) [es

  18. Energy systems security

    CERN Document Server

    Voeller, John G

    2014-01-01

    Energy Systems Security features articles from the Wiley Handbook of Science and Technology for Homeland Security covering topics related to electricity transmission grids and their protection, risk assessment of energy systems, analysis of interdependent energy networks. Methods to manage electricity transmission disturbances so as to avoid blackouts are discussed, and self-healing energy system and a nano-enabled power source are presented.

  19. Information extraction system

    Science.gov (United States)

    Lemmond, Tracy D; Hanley, William G; Guensche, Joseph Wendell; Perry, Nathan C; Nitao, John J; Kidwell, Paul Brandon; Boakye, Kofi Agyeman; Glaser, Ron E; Prenger, Ryan James

    2014-05-13

    An information extraction system and methods of operating the system are provided. In particular, an information extraction system for performing meta-extraction of named entities of people, organizations, and locations as well as relationships and events from text documents are described herein.

  20. Faculty Assignment Classification System.

    Science.gov (United States)

    Whatcom Community Coll., Ferndale, WA.

    This document outlines the point-based faculty assignment classification system in effect at Whatcom Community College (Washington). The purpose of the point system is to provide an equitable and flexible means of compensating faculty members based on a system of assigning quantitative values to tasks. Teaching, which includes classroom…

  1. The Quality System

    DEFF Research Database (Denmark)

    Brogaard Buus, Daniel; Eland, Morten Vestergaard; Lystlund, Rasmus

    2015-01-01

    In this article, we present our efforts to try to increase cohesiveness and connectivity between quests generated by a recreation of an existing procedural quest generation system, with an addition of a progressive tier system called Quality System. A study gave strong indications that the Quality...

  2. Network SCADA System

    International Nuclear Information System (INIS)

    Milivojevic, Dragan R.; Tasic, Visa; Karabasevic, Dejan

    2003-01-01

    Copper Institute, Industrial Informatics department, is developing and applying network real time process monitoring and control systems. Some of these systems are already in use. The paper presents some hardware and software general remarks and performances, with special regard to communication sub-systems and network possibilities. (Author)

  3. Fusion systems engineering

    International Nuclear Information System (INIS)

    Anon.

    1977-01-01

    Summaries of research are included for each of the following topics: (1) fusion reactor systems studies, (2) development of blanket processing technology for fusion reactors, (3) safety studies of fusion concepts, (4) the MACK/MACKLIB system for nuclear response functions, and (5) energy storage and power supply systems for fusion reactors

  4. Digestive System (For Teens)

    Science.gov (United States)

    ... Staying Safe Videos for Educators Search English Español Digestive System KidsHealth / For Teens / Digestive System What's in this ... out of the body as feces. About the Digestive System Every morsel of food we eat has to ...

  5. Automated Vehicle Monitoring System

    OpenAIRE

    Wibowo, Agustinus Deddy Arief; Heriansyah, Rudi

    2014-01-01

    An automated vehicle monitoring system is proposed in this paper. The surveillance system is based on image processing techniques such as background subtraction, colour balancing, chain code based shape detection, and blob. The proposed system will detect any human's head as appeared at the side mirrors. The detected head will be tracked and recorded for further action.

  6. Solar tracking system

    Science.gov (United States)

    Okandan, Murat; Nielson, Gregory N.

    2016-07-12

    Solar tracking systems, as well as methods of using such solar tracking systems, are disclosed. More particularly, embodiments of the solar tracking systems include lateral supports horizontally positioned between uprights to support photovoltaic modules. The lateral supports may be raised and lowered along the uprights or translated to cause the photovoltaic modules to track the moving sun.

  7. Radiology systems architecture.

    Science.gov (United States)

    Deibel, S R; Greenes, R A

    1996-05-01

    This article focuses on the software requirements for enterprise integration in radiology. The needs of a future radiology systems architecture are examined, both at a concrete functional level and at an abstract system-properties level. A component-based approach to software development is described and is validated in the context of each of the abstract system requirements for future radiology computing environments.

  8. Expert Systems in Education.

    Science.gov (United States)

    Hartschuh, Wayne

    This paper argues that the concepts and techniques used in the development of expert systems should be expanded and applied to the field of education, particularly in the area of intelligent tutoring systems. It is noted that expert systems are a well known area of artificial intelligence and have been proven effective in well-defined topic areas.…

  9. Knowledge systems in agroforestry

    Science.gov (United States)

    Wieland Kunzel

    1993-01-01

    Pacific Islands agroforestry has evolved into sustainable, diverse and productive a land use systems in many areas. We marvel at these systems, and the scientific world is trying to catch up with the traditional knowledge. At the same time, Pacific Islands farmers are abandoning their agroforestry systems in great numbers. It is mainly intensified agriculture for cash...

  10. Interactions within wastewater systems

    NARCIS (Netherlands)

    Langeveld, J.G.

    2004-01-01

    Wastewater systems consist of sewer systems and wastewater treatment works. As the performance of a wastewater treatment plant is affected by the characteristics, i.e. operation and design, of the contributing sewer systems, knowledge of the interactions between sewers and wastewater treatment works

  11. NPOx Decontamination System

    Energy Technology Data Exchange (ETDEWEB)

    Archibald, K.; Demmer, R.; Argyle, M.; Ancho, M.; Hai-Pao, J.

    2002-02-25

    The nitric acid/potassium permanganate/oxalic acid (NPOx) Phase II system is being prepared for remote operation at the Idaho National Engineering and Environmental Laboratory (INEEL). Several tests have been conducted to prepare the system for remote operation. This system performs very well with high decontamination efficiencies and very low quantities of waste generated during decontamination.

  12. Dynamic Systems and Control Engineering

    International Nuclear Information System (INIS)

    Kim, Jong Seok

    1994-02-01

    This book deals with introduction of dynamic system and control engineering, frequency domain modeling of dynamic system, temporal modeling of dynamic system, typical dynamic system and automatic control device, performance and stability of control system, root locus analysis, analysis of frequency domain dynamic system, design of frequency domain dynamic system, design and analysis of space, space of control system and digital control system such as control system design of direct digital and digitalization of consecutive control system.

  13. Petascale system management experiences.

    Energy Technology Data Exchange (ETDEWEB)

    Desai, N.; Bradshaw, R.; Lueninghoener, C.; Cherry, A.; Coghlan, S.; Scullin, W. (LCF); ( MCS)

    2008-01-01

    Petascale High-Performance Computing (HPC) systems are among the largest systems in the world. Intrepid, one such system, is a 40,000 node, 556 teraflop Blue Gene/P system that has been deployed at Argonne National Laboratory. In this paper, we provide some background about the system and our administration experiences. In particular, due to the scale of the system, we have faced a variety of issues, some surprising to us, that are not common in the commodity world. We discuss our expectations, these issues, and approaches we have used to address them. HPC systems are a bellwether for computing systems at large, in multiple regards. HPC users are motivated by the need for absolute performance; this results in two important pushes. HPC users are frequently early adopters of new technologies and techniques. Successful technologies, like Infiniband, prove their value in HPC before gaining wider adoption. Unfortunately, this early adoption alone is not sufficient to achieve the levels of performance required by HPC users; parallelism must also be harnessed. Over the last 15 years, beowulf clustering has provided amazing accessibility to non-HPC-savvy and even non-technical audiences. During this time, substantial adoption of clustering has occurred in many market segments unrelated to computational science. A simple trend has emerged: the scale and performance of high-end HPC systems are uncommon at first, but become commonplace over the course of 3-5 years. For example, in early 2003, several systems on the Top500 list consisted of either 1024 nodes or 4096-8192 cores. In 2008, such systems are commonplace. The most recent generation of high-end HPC systems, so called petascale systems, are the culmination of years of research and development in research and academia. Three such systems have been deployed thus far. In addition to the 556 TF Intrepid system at Argonne National Laboratory, a 596 TF Blue Gene/L-based system has been deployed at Lawrence Livermore

  14. 2014 Runtime Systems Summit. Runtime Systems Report

    Energy Technology Data Exchange (ETDEWEB)

    Sarkar, Vivek [US Dept. of Energy, Washington, DC (United States); Budimlic, Zoran [US Dept. of Energy, Washington, DC (United States); Kulkani, Milind [US Dept. of Energy, Washington, DC (United States)

    2016-09-19

    This report summarizes runtime system challenges for exascale computing, that follow from the fundamental challenges for exascale systems that have been well studied in past reports, e.g., [6, 33, 34, 32, 24]. Some of the key exascale challenges that pertain to runtime systems include parallelism, energy efficiency, memory hierarchies, data movement, heterogeneous processors and memories, resilience, performance variability, dynamic resource allocation, performance portability, and interoperability with legacy code. In addition to summarizing these challenges, the report also outlines different approaches to addressing these significant challenges that have been pursued by research projects in the DOE-sponsored X-Stack and OS/R programs. Since there is often confusion as to what exactly the term “runtime system” refers to in the software stack, we include a section on taxonomy to clarify the terminology used by participants in these research projects. In addition, we include a section on deployment opportunities for vendors and government labs to build on the research results from these projects. Finally, this report is also intended to provide a framework for discussing future research and development investments for exascale runtime systems, and for clarifying the role of runtime systems in exascale software.

  15. Business System Planning Project, Preliminary System Design

    International Nuclear Information System (INIS)

    EVOSEVICH, S.

    2000-01-01

    CH2M HILL Hanford Group, Inc. (CHG) is currently performing many core business functions including, but not limited to, work control, planning, scheduling, cost estimating, procurement, training, and human resources. Other core business functions are managed by or dependent on Project Hanford Management Contractors including, but not limited to, payroll, benefits and pension administration, inventory control, accounts payable, and records management. In addition, CHG has business relationships with its parent company CH2M HILL, U.S. Department of Energy, Office of River Protection and other River Protection Project contractors, government agencies, and vendors. The Business Systems Planning (BSP) Project, under the sponsorship of the CH2M HILL Hanford Group, Inc. Chief Information Officer (CIO), have recommended information system solutions that will support CHG business areas. The Preliminary System Design was developed using the recommendations from the Alternatives Analysis, RPP-6499, Rev 0 and will become the design base for any follow-on implementation projects. The Preliminary System Design will present a high-level system design, providing a high-level overview of the Commercial-Off-The-Shelf (COTS) modules and identify internal and external relationships. This document will not define data structures, user interface components (screens, reports, menus, etc.), business rules or processes. These in-depth activities will be accomplished at implementation planning time

  16. The Stringer system

    DEFF Research Database (Denmark)

    Almegaard, Henrik

    2004-01-01

    whether or not the system is statically and geometrically/kinematically determinate. 2. the geometry corresponds to the curvature of the considered surface and ensures that the system can be applied as a valid static and geometric model for the membrane shell. In most cases, the stringer system regarded...... investigated by (Szabo and Tarnai 1992). However, these efforts have not solved the problem completely. The paper presents a triangular single layer truss system - the stringer system - which differs from the above mentioned models in two ways: 1. the systematic topology makes it relatively simple to control...

  17. Power system relaying

    CERN Document Server

    Horowitz, Stanley H; Niemira, James K

    2013-01-01

    The previous three editions of Power System Relaying offer comprehensive and accessible coverage of the theory and fundamentals of relaying and have been widely adopted on university and industry courses worldwide. With the third edition, the authors have added new and detailed descriptions of power system phenomena such as stability, system-wide protection concepts and discussion of historic outages. Power System Relaying, 4th Edition continues its role as an outstanding textbook on power system protection for senior and graduate students in the field of electric power engineering and a refer

  18. Proposed TFTR electrical system

    International Nuclear Information System (INIS)

    Bronner, G.; Murray, J.

    1975-01-01

    The development of controlled thermonuclear fusion has progressed to the stage where the present facilities and energy available for future devices are not sufficient and must be increased by about a factor of ten. This report describes the proposed TFTR ac utility power distribution system, an energy storage motor generator flywheel facility, and the rectifier conversion equipment for the Toroidal Field Confining System (TF), Ohmic Heating System (OH), Equilibrium Field System (EF) and the Neutral Beam Heating System (NB). The general requirements are described and the special design considerations identified

  19. Superconductor rotor cooling system

    Science.gov (United States)

    Gamble, Bruce B.; Sidi-Yekhlef, Ahmed; Schwall, Robert E.; Driscoll, David I.; Shoykhet, Boris A.

    2002-01-01

    A system for cooling a superconductor device includes a cryocooler located in a stationary reference frame and a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with a rotating reference frame in which the superconductor device is located. A method of cooling a superconductor device includes locating a cryocooler in a stationary reference frame, and transferring heat from a superconductor device located in a rotating reference frame to the cryocooler through a closed circulation system external to the cryocooler. The closed circulation system interfaces the stationary reference frame with the rotating reference frame.

  20. Smart vehicular transportation systems

    Energy Technology Data Exchange (ETDEWEB)

    Little, C.Q.; Wilson, C.W.

    1997-05-01

    This work builds upon established Sandia intelligent systems technology to develop a unique approach for the integration of intelligent system control into the US Highway and urban transportation systems. The Sandia developed concept of the COPILOT controller integrates a human driver with computer control to increase human performance while reducing reliance on detailed driver attention. This research extends Sandia expertise in sensor based, real-time control of robotics systems to high speed transportation systems. Knowledge in the form of maps and performance characteristics of vehicles provides the automatic decision making intelligence needed to plan optimum routes, maintain safe driving speeds and distances, avoid collisions, and conserve fuel.