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Sample records for mes posparto factores

  1. La preeclampsia y la hipertensión gestacional como factores de riesgo para el desarrollo del estado de prehipertensión y de hipertensión arterial a las doce semanas posparto. Un estudio descriptivo prospectivo

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    Bernardo Agudelo Jaramillo; Joaquín Guillermo Gómez Dávila; Samuel Eduardo Gélvez Téllez; Elkin Darío Cuartas Arias

    2008-01-01

    OBJETIVO: explorar si la preeclampsia y la hipertensión gestacional son factores de riesgo para los estados prehipertensivo e hipertensivo a las doce semanas posparto. DISEÑO: estudio descriptivo prospectivo de pacientes del área metropolitana del valle de Aburrá, hospitalizadas por preeclampsia o hipertensión gestacional, a quienes se les atendió el parto en el Hospital Universitario San Vicente de Paúl de Medellín, Colombia, y se les hizo seguimiento hasta las doce semanas posparto. MÉTODO:...

  2. Factores de riesgo asociados a muerte materna por hemorragia posparto en el departamento de Antioquia en los años 2004-2006

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    John Jairo Zuleta Tobón

    2008-02-01

    Full Text Available La mortalidad materna en Antioquia se calculó para los años 2004 y 2005 en 63,2 y 48,1 por 100.000 nacidos vivos, respectivamente; la principal causa fue la hemorragia posparto con 44% y 28% en los mismos años. Por cada caso de muerte se calcula en 30 los casos de eventos obstétricos que implican riesgo de morir. Al analizar estos casos se han encontrado algunos factores que impactan el desenlace. OBJETIVOS: describir las características generales de las pacientes que presentaron hemorragia obstétrica en el departamento de Antioquia en los años 2004-2006, así como identificar los factores de riesgo asociados a muerte en estas pacientes. TIPO DE ESTUDIO: de casos y controles. RESULTADOS Y CONCLUSIONES: en el departamento de Antioquia para los años 2004-2006 se informaron 35 casos de muerte materna por hemorragia posparto, y en la ciudad de Medellín, 42 casos de hemorragia obstétrica grave del tercer trimestre en los años 2005 y 2006. En el 47,6% de las pacientes con hemorragia obstétrica y en el 34,3% de las pacientes fallecidas se hizo manejo activo del alumbramiento con oxitocina. Los retrasos I y II fueron más frecuentes en el grupo de mortalidad con 54,5% y 21,2%, respectivamente, y el retraso tipo III fue similar para ambos grupos: 86,8% vs. 90,9%. El manejo de líquidos y la utilización de hemoderivados fueron similares en ambos grupos, aunque no fueron administrados según las recomendaciones para el manejo del choque hipovolémico. La hemorragia posparto continúa siendo la principal causa de mortalidad materna y de morbilidad obstétrica grave en el departamento de Antioquia, sin que se logre evidenciar diferencias claras que condicionen uno u otro desenlace.

  3. Identification of the Drosophila Mes4 gene as a novel target of the transcription factor DREF

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    Suyari, Osamu; Ida, Hiroyuki [Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan); Insect Biomedical Research Center, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan); Yoshioka, Yasuhide; Kato, Yasuko; Hashimoto, Reina [Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan); Insect Biomedical Research Center, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan); Venture Laboratory, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan); Yamaguchi, Masamitsu, E-mail: myamaguc@kit.ac.jp [Department of Applied Biology, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan); Insect Biomedical Research Center, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585 (Japan)

    2009-05-01

    The Mes4 gene has been identified as one of the maternal Dorsal target genes in Drosophila. In the present study, we found a DNA replication-related element (DRE, 5'-TATCGATA) in the Mes4 promoter recognized by the DRE-binding factor (DREF). Luciferase transient expression assays in S2 cells using Mes4 promoter-luciferase fusion plasmids revealed that the DRE sequence is essential for Mes4 promoter activity. Requirement of DRE for Mes4 promoter activity was further confirmed by anti-{beta}-galactosidase antibody-staining of various tissues from transgenic flies carrying Mes4 promoter-lacZ fusion genes. Furthermore, wild type Mes4 promoter activity was decreased by 40% in DREF-depleted S2 cells. These results indicate that DREF positively regulates Mes4 gene expression. Band mobility shift analyses using Kc cell nuclear extracts further indicated that the DRE sequence in the Mes4 promoter is especially important for binding to DREF. Moreover, specific binding of DREF to the involved genomic region could be demonstrated by chromatin immunoprecipitation assays using anti-DREF antibodies. These results, taken together, indicate that the DRE/DREF system activates transcription of the Mes4 gene. In addition, knockdown of the Mes4 gene in wing imaginal discs using the GAL4-UAS system caused an atrophied wing phenotype, suggesting that Mes4 is required for wing morphogenesis.

  4. Identification of the Drosophila Mes4 gene as a novel target of the transcription factor DREF

    International Nuclear Information System (INIS)

    Suyari, Osamu; Ida, Hiroyuki; Yoshioka, Yasuhide; Kato, Yasuko; Hashimoto, Reina; Yamaguchi, Masamitsu

    2009-01-01

    The Mes4 gene has been identified as one of the maternal Dorsal target genes in Drosophila. In the present study, we found a DNA replication-related element (DRE, 5'-TATCGATA) in the Mes4 promoter recognized by the DRE-binding factor (DREF). Luciferase transient expression assays in S2 cells using Mes4 promoter-luciferase fusion plasmids revealed that the DRE sequence is essential for Mes4 promoter activity. Requirement of DRE for Mes4 promoter activity was further confirmed by anti-β-galactosidase antibody-staining of various tissues from transgenic flies carrying Mes4 promoter-lacZ fusion genes. Furthermore, wild type Mes4 promoter activity was decreased by 40% in DREF-depleted S2 cells. These results indicate that DREF positively regulates Mes4 gene expression. Band mobility shift analyses using Kc cell nuclear extracts further indicated that the DRE sequence in the Mes4 promoter is especially important for binding to DREF. Moreover, specific binding of DREF to the involved genomic region could be demonstrated by chromatin immunoprecipitation assays using anti-DREF antibodies. These results, taken together, indicate that the DRE/DREF system activates transcription of the Mes4 gene. In addition, knockdown of the Mes4 gene in wing imaginal discs using the GAL4-UAS system caused an atrophied wing phenotype, suggesting that Mes4 is required for wing morphogenesis.

  5. Factores psicosociales asociados a un alto, medio y bajo riesgo de síntomas depresivos en el posparto inmediato Psychosocial factors associated to low, medium and high risk of depressive symptoms in the immediate postpartum period

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    Cynthia Inés Paolini

    2012-03-01

    Full Text Available OBJETIVOS: evaluar factores psicosociales asociados a síntomas depresivos en el posparto inmediato. MÉTODOS: 45 mujeres puérperas de un hospital público de Buenos Aires, Argentina, fueron entrevistadas entre el 1er y el 3er día posparto, de marzo-diciembre 2010. La Escala de Depresión Posnatal de Edimburgo (EPDS fue administrada para evaluar síntomas depresivos. La entrevista psicológica perinatal (EPP fue administrada para detectar variables psicosociales. A partir de los resultados obtenidos en la EPDS, se separó la muestra en tres grupos con diferentes grados de riesgo de sintomatología depresiva: "negativas o de bajo riesgo", "positivas de riesgo medio" y "positivas de alto riesgo". Los puntajes de corte utilizados fueron 9 y 19. RESULTADOS: se encontraron diferencias significativas entre los tres grupos con violencia familiar, migración, historia previa de depresión, presencia de síntomas depresivos durante el embarazo y mayor cantidad de estresores. CONCLUSIONES: el establecimiento de los dos puntajes de corte en la EPDS permite una detección temprana de las mujeres que presentan síntomas depresivos. Se sugiere la utilidad del puntaje de corte de 19 para la detección temprana de mujeres con mayor riesgo de desarrollar depresión posparto.OBJECTIVES: evaluate psychosocial factors associated to depressive symptoms during the immediate postpartum period. METHODS: a total of 45 argentine puerperal women hospitalized in a public maternal hospital of Buenos Aires, Argentina, were interviewed on the 1st and 3rd day postpartum from March to December 2010. Aiming to assess the presence of depressive symptoms, the Edinburgh Postnatal Depression Scale (EPDS was administrated. The Perinatal Psychological Interview was administrated to explore psychosocial variables. Based on the scores obtained in the EPDS, the sample was separated in three different groups with increasing risk of depressive symptomatology: "negative or low risk

  6. Factores asociados a la aceptación de salpingoclasia posparto entre mujeres infectadas por el VIH

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    Figueroa-Damián Ricardo

    2001-01-01

    Full Text Available OBJETIVO: Identificar los factores asociados a la aceptación de salpingoclasia entre mujeres infectadas por el virus de inmunodeficiencia humana (VIH, después de finalizar su embarazo. MATERIAL Y MÉTODOS: Se realizó un estudio de casos y controles con 72 pacientes embarazadas seropositivas al VIH, en el Instituto Nacional de Perinatología (INPer, entre marzo de 1988 y febrero de 1999. Se consideraron casos a 49 mujeres que al finalizar el embarazo aceptaron la realización de salpingoclasia, 23 pacientes que rechazaron este procedimiento conformaron los controles. En cada paciente se investigaron antecedentes demográficos, historia sexual y reproductiva y condiciones relacionadas con la infección por el VIH. Se realizó estadística descriptiva, las variables categóricas se compararon con ji² o prueba exacta de Fisher y las continuas con t de Student, se hizo cálculo de razón de momios (RM, con intervalo de confianza al 95% y se realizó análisis estratificado mediante ji² de Mantel Haenszel para variables potencialmente confusoras. RESULTADOS: La edad promedio de las pacientes seropositivas fue de 25.5 ± 5.5 años. Estas ingresaron al hospital con una mediana de 27 semanas de gestación (intervalo de 7 a 40 semanas; 16 (22.2% no tuvieron control prenatal en el INPer. La mediana de tiempo de conocerse infectadas fue de nueve meses (intervalo 1 a 108. Las variables que se asociaron con la aceptación de salpingoclasia fueron: el antecedente de hijos previos, con una RM de 11.1 (IC 95% 3.4 a 36; la atención a partir del año de 1995, con una RM de 4.7 (IC 95% 1.7 a 13.3 y el tener cuando menos un hijo previo infectado, con una RM de 4.6 (IC 95% 1.1 a 23.1. El análisis estratificado no mostró modificación en la fuerza de asociación de estas variables con la aceptación de salpingoclasia. CONCLUSIONES: El tener hijos previos fue el factor que más influyó en la aceptación de salpingoclasia. El texto completo en inglés de este

  7. Factores asociados con lactancia materna exclusiva hasta el sexto mes en madres adolescentes. medellin, 2010

    OpenAIRE

    Gómez Aristizábal, Liliana Yanet; Díaz Ruíz, Carlos Eduardo; Manrique Hernández, Ruben Dario

    2013-01-01

    Objetivo Determinar los factores asociados con la lactancia materna exclusiva hasta el sexto mes en madres adolescentes de los niveles I y II del SISBEN de la ciudad de Medellín.Métodos Se realizó un estudio de casos y controles con 323 madres adolescentes, 197 casos y 126 controles de la “Estrategia Buen Comienzo Había una Vez-BCHV” de Metrosalud y la Alcaldía de Medellín. Se aplicó estadística descriptiva para el análisis univariado. Se hizo un análisis de correspondencias. La comparación d...

  8. Depresión posparto: ¿se encuentra asociada a la violencia basada en género?

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    Juan Escobar

    2009-06-01

    Full Text Available Introducción: La depresión posparto y la violencia basada en género son patologías muy frecuentes en la mujer; la importancia de un diagnóstico y tratamiento oportuno radica en evitar las consecuencias a futuro en la mujer, el recién nacido y la familia en general. Objetivos: Determinar la asociación entre depresión posparto y la violencia basada en género. Diseño: Exploratorio, de corte transversal. Lugar: Hospital Nacional Docente Madre Niño San Bartolomé, Lima, Perú. Participantes: Mujeres puérperas. Intervenciones: Se aplicó una ficha de datos sociodemográficos y del parto, la escala de Edimburgo, el inventario revisado de factores predictores de depresión posparto y el instrumento de detección de violencia basada en género a 100 mujeres, de 1 a 12 meses de tiempo puerperal. Principales medidas de resultados: Asociación entre depresión posparto y violencia basada en género. Resultados: La tasa de depresión posparto fue 17%, encontrando diferencias estadísticas al compararla con autoestima, depresión previa al embarazo, ansiedad durante la gestación, satisfacción marital y eventos estresantes durante la gestación. El 51% fue víctima de violencia basada en género, siendo la más frecuente la forma psicológica. Se halló diferencias estadísticas entre depresión posparto y violencia basada en género (p=0,001, así como, diferencias estadísticas entre depresión posparto y violencia durante la gestación, encontrando un OR de 5,5 (IC: . Conclusiones: Las mujeres víctimas de violencia tienen riesgo elevado de sufrir depresión posparto.

  9. Plaquetas e hipertensión arterial durante el posparto

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    Sanabria Vera, Charles; Núñez González, José; Rojas González, Liliana; Urdaneta, Baldimiro

    2001-01-01

    Objetivo: Determinar el contaje plaquetario posparto en preclampsia, eclampsia e hipertensión arterial crónica con preeclampsia sobreañadida. Método: Se cuantificaron las plaquetas pre y posparto de las gestantes ingresadas se repitieron cada 12 horas hasta normalizarse el reporte de trombocitopenia (< 150 000 x mm3). Ambiente: Maternidad del Hospital Central "Dr. Urquinaona". Maracaibo, Estado Zulia. Resultados: Hubo 85 pacientes admitidas; 21 con preeclampsia severa, 10 con eclampsia y 19 c...

  10. DEPRESIÓN POSPARTO EN EL CONTEXTO DEL HOSPITAL GENERAL

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    Dr. Enrique Jadresic M.

    2017-01-01

    El puerperio es un período de mayor vulnerabilidad psíquica y la depresión posparto (DPP) es la complicación obstétrica más común. En el caso de la depresión, la última clasificación de la Asociación Americana de Psiquiatría (DSM-5) (2013) sustituyó el especificador “de comienzo en el posparto” por “con inicio en el periparto” porque muchas depresiones posparto comienzan en el embarazo. Empero, la denominación posparto sigue siendo válida, y debe conservarse con independencia de si su inicio ...

  11. DEPRESIÓN POSPARTO EN EL CONTEXTO DEL HOSPITAL GENERAL

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    Dr. Enrique Jadresic M.

    2017-11-01

    Full Text Available El puerperio es un período de mayor vulnerabilidad psíquica y la depresión posparto (DPP es la complicación obstétrica más común. En el caso de la depresión, la última clasificación de la Asociación Americana de Psiquiatría (DSM-5 (2013 sustituyó el especificador “de comienzo en el posparto” por “con inicio en el periparto” porque muchas depresiones posparto comienzan en el embarazo. Empero, la denominación posparto sigue siendo válida, y debe conservarse con independencia de si su inicio fue en el posparto (hasta seis meses después del parto o en el embarazo. Los síntomas depresivos puerperales pueden encontrarse en la disforia, la DPP (monopolar o bipolar o la psicosis afectiva puerperal. La DPP y la psicosis comprometen el funcionamiento materno y se asocian a alteraciones del vínculo madre/hijo(a. El tratamiento oportuno y la prevención de estos trastornos minimizan los riesgos y favorecen la salud de la madre y su descendencia.

  12. ANESTRO POSPARTO EN GANADO BOVINO EN EL TRÓPICO

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    Giovanni Báez S, M.Sc

    2009-12-01

    Full Text Available La productividad y rentabilidad de las empresas ganaderas depende en gran medida de la capacidad fisiológica de las hembras para cumplir con el objetivo de tener una cría por año. Un factor determinante para lograrlo es reducir al máximo el periodo de anestro posparto, que es el tiempo luego del parto durante el cual no existen suficientes niveles pulsátiles de hormona luteinizante (LH que permitan un desarrollo final del folículo y la consiguiente ovulación. Dos factores intervienen principalmente en este fenómeno: la nutrición y el amamantamiento. Existen señales metabólicas que indican al eje hipotálamo-hipófisis que se ha alcanzado un equilibrio en el balance energético para que este inicie la secreción de hormona liberadora de gonadotropinas (GnRH y se inicie el restablecimiento de la actividad reproductiva. Por su parte, el estimulo que ejerce el ternero sobre la vaca genera secreción de endorfinas endógenas a nivel hipotalámico que también van a inhibir la liberación de GnRH. Otros factores que modulan los efectos de la nutrición y el amamantamiento son la edad, numero de partos, raza, estrés calórico y factores sociales (efecto macho y hembra. Generalmente, luego de la primera ovulación, se presenta un ciclo estral de corta duración que corresponde a una luteolisis temprana en respuesta a la prostaglandina F2 alfa (PGF2a de origen uterino; sin embargo, los niveles de progesterona producidos durante este corto periodo ejercen un importante papel en el establecimiento de la ciclicidad subsecuente.

  13. MIPyMEs Industriales de Colombia y México: Factores que dificultan o facilitan su desarrollo 2000-2013

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    Luna Rincón, Jonny Eliecer; Vargas Pulino, William Ernesto

    2017-01-01

    La presente investigación aborda los diferentes puntos de vista teórico-prácticos de los factores productivos (trabajo, tierra, capital y tecnología) y de entorno (Política económica que a su vez se divide en Política Monetaria, Política de Rentas, Política Fiscal, Política Cambiaria y Política Exterior) que facilitan o dificultan el desarrollo económico de las MIPyMEs del sector industrial de Colombia y México en el periodo comprendido del año 2000 al 2013, tomando como referencia las teoría...

  14. Determinando los factores del capital relacional en la interacción de cliente proveedor en MiPyMES

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    José Gerardo Álvarez-Hernández

    2016-01-01

    Full Text Available El objetivo de esta investigación ha sido determinar y analizar los factores que caracterizan el capital relacional en la interacción cliente-pro - veedor en pequeñas y medianas empresas en una región específica de México. Con fundamento en la revisión de literatura se identifican las perspectivas de análisis de la variable de capital relacional en el trato con los proveedores. Se desarrolló y aplicó un cuestionario para recabar datos en 258 micro, pequeñas y medianas empresas (MiPyMES del noreste de México. Se utilizó la técnica de análisis factorial exploratorio para la determinación de los factores que mejor reflejan la estructura subyacente de las variables de estudio. Se obtuvieron tres dimensiones importantes mediante lo cual se puede afirmar que la comunicación y el compromiso, la integración y la socialización son los factores que caracterizan la relación cliente - proveedor, en las micro, pequeñas y medianas empresas estudiadas.

  15. Factores asociados a la aceptación de salpingoclasia posparto entre mujeres infectadas por el VIH Factors associated with acceptance of postpartum tubal ligation among HIV infected women

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    Ricardo Figueroa-Damián

    2001-04-01

    Full Text Available OBJETIVO: Identificar los factores asociados a la aceptación de salpingoclasia entre mujeres infectadas por el virus de inmunodeficiencia humana (VIH, después de finalizar su embarazo. MATERIAL Y MÉTODOS: Se realizó un estudio de casos y controles con 72 pacientes embarazadas seropositivas al VIH, en el Instituto Nacional de Perinatología (INPer, entre marzo de 1988 y febrero de 1999. Se consideraron casos a 49 mujeres que al finalizar el embarazo aceptaron la realización de salpingoclasia, 23 pacientes que rechazaron este procedimiento conformaron los controles. En cada paciente se investigaron antecedentes demográficos, historia sexual y reproductiva y condiciones relacionadas con la infección por el VIH. Se realizó estadística descriptiva, las variables categóricas se compararon con ji² o prueba exacta de Fisher y las continuas con t de Student, se hizo cálculo de razón de momios (RM, con intervalo de confianza al 95% y se realizó análisis estratificado mediante ji² de Mantel Haenszel para variables potencialmente confusoras. RESULTADOS: La edad promedio de las pacientes seropositivas fue de 25.5 ± 5.5 años. Estas ingresaron al hospital con una mediana de 27 semanas de gestación (intervalo de 7 a 40 semanas; 16 (22.2% no tuvieron control prenatal en el INPer. La mediana de tiempo de conocerse infectadas fue de nueve meses (intervalo 1 a 108. Las variables que se asociaron con la aceptación de salpingoclasia fueron: el antecedente de hijos previos, con una RM de 11.1 (IC 95% 3.4 a 36; la atención a partir del año de 1995, con una RM de 4.7 (IC 95% 1.7 a 13.3 y el tener cuando menos un hijo previo infectado, con una RM de 4.6 (IC 95% 1.1 a 23.1. El análisis estratificado no mostró modificación en la fuerza de asociación de estas variables con la aceptación de salpingoclasia. CONCLUSIONES: El tener hijos previos fue el factor que más influyó en la aceptación de salpingoclasia. El texto completo en inglés de este

  16. EL POSPARTO EN LA VACA POST-PARTUM IN THE CATTLE

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    Hernández Vásquez Aureliano

    2007-11-01

    Full Text Available El posparto es un periodo crítico del ciclo reproductivo del bovino. Para que se reasuma la función reproductiva después del parto, es necesario que haya involución uterina, cese la inhibición de la función del hipotálamo y la hipófisis para que se restablezcan el patrón de secreción de la hormona luteinizante y la ovulación. En el presente artículo se discuten sucintamente los aspectos más relevantes que influyen en la restauración de la función reproductiva, a saber: el amamantamiento y cercanía del ternero a la madre, presencia del toro en el hato, la nutrición, las reservas energéticas de la madre y el efecto del suministro de algunas hormonas.The postpartum is a critical period during the reproductive life of a cow. In a general approach, the return to reproductive function after parturition, depends on uterine involution and cessation of the inhibition of hypothalamic and hypophyseal functions. In the present revision, known relevant factors aspects which influence postpartum reproductive physiology, are briefly discussed, including suckling, nutrition and energy status of the cow, contact with the calf and presence of a bull, and the effect of time of the year at parturition, as well as the use of hormonal therapies.

  17. mes

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    Manniez, Yves

    2013-01-01

    Date de l'opération : 1994 (SU) Inventeur(s) : Manniez Yves (AFAN) Plan général des opérations extra muros de Nîmes (Fig. n°2 : Plan général des principales opérations rurales (1991-1998)). En préalable à la construction d’un bâtiment, une expertise archéologique a été réalisée dans la parcelle HB-462 jouxtant au sud la route de Beaucaire et à l’ouest un cours d’eau temporaire aujourd’hui couvert (rue Bergson) (Monteil, Martial. 1999. ) (Fig. n°1 : Plan de localisation des opérations des 74-...

  18. mes

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    Hervé, Marie-Laure

    2013-01-01

    Date de l'opération : 1995 (SD) Inventeur(s) : Hervé Marie-Laure (AFAN) Plan général des opérations extra muros de Nîmes (Fig. n°3 : Plan général des principales opérations rurales (1991-1998)). En préalable à l’établissement d’une construction venant remplacer une station-service, une expertise archéologique a été réalisée dans la parcelle CX-499, CX-500 qui aurait livré en 1931 les restes d’un monument funéraire (Espérandieu, Emile. 1932. ) [ (Fig. n°1 : Plan de localisation des opérations...

  19. Hemoglobinuria posparto en vacas de tres rebaños lecheros de la región del Bío-Bío, Chile

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    Mirela Noro

    2011-12-01

    Full Text Available La hemoglobinuria posparto es una enfermedad metabólica esporádica que presentan las vacas lecheras, manifestándose dentro de las 6 semanas posparto asociada al rápido incremento de la producción de leche al inicio de la lactancia. Se caracteriza por una anemiaaguda regenerativa por hemólisis intravascular con hemoglobinuria. Entre los factores que predisponen a su presentación están la ingesta de una dieta carente en fósforo, cobre o selenio, o bien concomitante a la presencia de agentes hemolíticos en plantas crucíferas como el nabo o colza. El trabajo describe aspectos relacionados a la presentación de brotes de la enfermedad en tres rebaños lecheros de la región del Bío-bío, Chile, con hipofosfatemia asociada a la incorporación de derivados de la remolacha azucarera en la dieta.

  20. FACTORES ASOCIADOS A LA CONDUCTA DE LACTANCIA MATERNA EXCLUSIVA HASTA EL SEXTO MES DE LA VIDA EN NIÑOS Y NIÑAS DE LA COMUNA DE SAN PEDRO DE LA PAZ

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    ROMERO GARCIA, STEPHANIE

    2012-01-01

    Introducción: La comuna de San Pedro de la Paz posee una baja prevalencia de lactancia materna exclusiva en todos sus períodos reportados. Objetivo: Identificar los factores asociados a la conducta de lactancia materna exclusiva en niños/as hasta el octavo mes de vida, que estén bajo control en la red asistencial de la comuna de San Pedro de la Paz. Material y Métodos: Estudio descriptivo transversal mediante aplicación de encuesta en domicilio a 253 madres de niños/as de 1 a 8 meses de vi...

  1. Legrado uterino o nifedipina durante el posparto en pacientes con preeclampsia severa

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    Santos-Bolívar, Joel; Guerra-Velásquez, Mery; Reyna-Villasmil, Eduardo; Mejia-Montilla, Jorly; Reyna-Villasmil, Nadia

    2011-01-01

    Objetivo: Comparar la eficacia del legrado uterino o la nifedipina durante el posparto en pacientes con preeclampsia severa. Ambiente: Maternidad “Dr. Nerio Belloso”, Hospital Central “Dr. Urquinaona”, Maracaibo. Estado Zulia. Métodos: Se realizó una investigación en 60 pacientes con diagnóstico de preeclampsia severa que fueron divididas de la siguiente manera: grupo A (n = 30) que fueron sometidas a legrado uterino inmediatamente después del parto y grupo B (n = 30) que recibieron nifedipin...

  2. REGULACIÓN NEUROENDOCRINA DEL ANESTRO POSPARTO EN LA OVEJA

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    Jaime Arroyo-Ledezma

    2009-02-01

    Full Text Available   La presente revisión se realizó con el propósito de analizar y discutir los eventos neuroendocrinos implicados en el anestro posparto de la oveja. En los mamíferos, durante la etapa posterior al parto, existe un periodo anovulatorio conocido como anestro posparto, estrategia evolutiva que asegura la supervivencia de la cría al incrementar la atención de la madre. En la oveja la presencia del cordero retrasa el reinicio de la actividad ovulatoria y su separación parcial o total adelanta el primer estro y ovulación posparto. Los péptidos opioides endógenos (POEs son neurotransmisores liberados a nivel central en forma aguda o crónica durante periodos de alerta, estrés y lactancia en hembras; están implicados en el mecanismo neuroendocrino que impide la ovulación durante el periodo posparto, actúan como intermediarios entre el estradiol (E2 y las neuronas productoras de la hormona liberadora de gonadotropinas (GnRH; el efecto biológico de este evento es la reducción en la frecuencia de pulsos de GnRH y por lo tanto, de la hormona luteinizante (LH. Los POEs se sintetizan en los lóbulos frontal e intermedio de la hipófisis y en el núcleo hipotalámico A12. En la oveja no es claro si el amamantamiento potencializa el efecto inhibitorio de los POEs. Los sitios de acción de este neurotransmisor, con relación a la reproducción son el área preóptica (APO, eminencia media (EM y núcleo ventromedial (NVM. No se ha determinado si en este evento fisiológico participan el acido gamma aminobutírico (GABA o la dopamina.

  3. Prevención de la congestión mamaria durante el posparto

    Directory of Open Access Journals (Sweden)

    Vanegas de Ahogado Blanca Cecilia

    1991-06-01

    Full Text Available Conociendo los múltiples beneficios de la lactancia materna, con frecuencia la madre está motivada para amamantar a su hijo, pero en los primeros días de posparto, cuando se presenta la ingurgitación mamaria fisiológica y las alteraciones en los pezones, se produce en la madre un gran sufrimiento físico por el dolor en sus senos y sufrimiento sicológico, al percibir que ella como madre ha fracasado en la lactancia y sentirse impotente para solucionar su problema de salud y el de su hijo que llora de hambre.

     

  4. Predictores de depresión posparto en puerperas atendidas en la ese municipal. Villavicencio. 2014

    Directory of Open Access Journals (Sweden)

    Luz Myriam Tobón-Borrero

    2015-04-01

    Full Text Available El presente estudio tuvo como objetivo determinar los predictores de la depresión posparto. Se realizaron visitas domiciliares a las maternas que asistieron a la cita de puerperio en las IPS´s de la ESE Municipal de Villavicencio durante los meses de febrero y marzo de 2014. Diseño descriptivo de corte transversal, con enfoque cuantitativo. La muestra no probabilística de 34 mujeres puérperas atendidas en la IPS La Esperanza, Porfía, Morichal y Popular de la E.S.E Municipal de Villavicencio; Instrumento fue la Escala de Detección Sistemática de Depresión Posparto (PDSS de Cheryl Tatano y colaboradores. Resultados. En la evaluación de la probabilidad de presencia de síntomas agrupados en dimensiones y su asociación con DPSS los hallazgos en la muestra estudio (n=32, determinaron significancia en tres de las siete: labilidad emocional, culpa/vergüenza y ansiedad/inseguridad. Se partió desde una perspectiva bilateral, esto es, desde la hipótesis alternativa que consistió en asumir que existen diferencias en la prevalencia de la DPSS según la presencia de las diferentes dimensiones, grupos de síntomas, que presentaban las usuarias

  5. INFLUENCIA DEL CONTACTO RESTRINGIDO HEMBRA-CORDERO EN LA DURACIÓN DEL ANESTRO POSPARTO EN OVEJAS PELIBUEY

    Directory of Open Access Journals (Sweden)

    Jaime Arroyo Ledezma

    2011-02-01

    Full Text Available El estudio se realizó con el propósito de evaluar el efecto de la restricción del contacto hembra-cordero en la duración del anestro posparto. Se utilizaron 28 ovejas Pelibuey adultas con sus crías. Un día después del parto, las hembras se asignaron aleatoriamente a dos condiciones de manejo. Amamantamiento restringido a 17 h/día (RS; n=17 ovejas; n=21 corderos, separación oveja-cría por 7 h/día (8:00 a 15:00 h. Amamantamiento continuo (US; n=11 ovejas; n=13 corderos, contacto e interacción oveja-cordero 24 h/día. Se colectaron muestras sanguíneas en las ovejas, del parto a los 105 días posparto y se determinó la concentración de progesterona por radioinmunoanálisis. Las ovejas y los corderos se pesaron cada 15 días y se registró la mortalidad durante el experimento. El intervalo parto - primera ovulación en las hembras, se analizó con un ANOVA; el peso al destete y la ganancia diaria de peso en los corderos se evaluaron con un Análisis de Covarianza y los cambios de peso en las hembras con un análisis multivariado para mediciones repetidas en el tiempo. La proporción de hembras ovulando a los 105 d posparto y la mortalidad de los corderos se evaluaron con una prueba de x2. El anestro posparto en RS (83.2 + 5.5 días fue mayor (P

  6. Portuaires et autres poèmes

    OpenAIRE

    Sévry, Jean

    2015-01-01

    Pour Paul Bensimon, affectueusement P O R T U A I R E S Longs dédales lents cheminementsRéseaux patiemment tissésDans l’écheveau de tes doigtsIl fait bon se réfugier Algues de l’accueil cordialité du corailRécifs enchanteurs eaux limpidesCorps libres nudités muscles pleinsNappes glauques où se perdent mes palmesPoisson voilà que je tresse mes écaillesEt mes nageoires effleurent tes pétales Départs sans idée d’escalesAncres légères chaînes détachéesBonheur du port auberges mitonnéesEmbarquemen...

  7. MES Development Framework: Concepts, Ideas, Implementation

    DEFF Research Database (Denmark)

    Caponetti, Fabio; Papaleo, Massimiliano

    MES development remains primarily a labour-intensive effort, thus subject to human limitations. ISA-95 defines a modeling road map, however, engineering techniques have advanced only moderately. Inevitably, the development process introduces errors beginning in requirements formulation, continuing...... performance, reduced dimensions, easier maintenance and coding are the key results of the project....

  8. Embarazo no deseado en adolescentes, y utilización de métodos anticonceptivos posparto

    Directory of Open Access Journals (Sweden)

    Núñez-Urquiza Rosa María

    2003-01-01

    Full Text Available OBJETIVO: Describir la proporción de embarazo no deseado en adolescentes, su asociación con características sociodemográficas y la utilización de anticonceptivos posparto. MATERIAL Y MÉTODOS: Se trata de un estudio transversal con una muestra de 220 mujeres adolescentes entre 13 y 19 años de edad, de dos municipios semiurbanos del estado de Morelos, México, entrevistadas entre 1992 y 1994. Las mujeres fueron entrevistadas en su casa entre seis y 12 semanas después del parto. Se les preguntó si antes de embarazarse desearon el último embarazo. Además, se indagó sobre conocimientos y uso de métodos anticonceptivos posparto. RESULTADOS: Un 17% de todos los nacimientos registrados en la población total en ese periodo fueron producto de madres adolescentes. De éstas, 22.73% declararon que su embarazo no fue deseado. Se encontró una asociación positiva entre no tener derecho de acceso a los servicios de salud de las instituciones del sistema de seguridad social -Instituto Mexicano del Seguro Social (IMSS, Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE- y embarazo no deseado (RM ajustada=3.03, IC 95% 1.31, 7. Asimismo, las adolescentes de comunidades urbanas manifestaron no deseo del embarazo con mayor frecuencia que las mujeres de comunidades rurales (RM ajustada=2.16, IC 95% 1.08, 4.33. Un 91.3% de las madres adolescentes enunció la píldora anticonceptiva entre los métodos que conocía. Un 84.72% conocía el DIU y 63.68% el condón. Sin embargo, sólo 35% estaba utilizando algún método anticonceptivo efectivo después de las seis semanas posparto. No se encontró diferencia en la frecuencia de uso de anticonceptivos según deseo del último embarazo. Entre quienes se atendieron el parto en centros de salud u hospital sólo 43.39% estaba utilizando algún método efectivo de planificación familiar. CONCLUSIONES: Estos hallazgos sugieren que los programas de planificación familiar tienen un

  9. Energy efficient MES. 39 vedors in comparison; Energieeffiziente MES. 39 Anbieter im Vergleich

    Energy Technology Data Exchange (ETDEWEB)

    Theuer, Hanna; Leo, Anne-Kathrin [Potsdam Univ. (Germany). Lehrstuhl fuer Wirtschaftsinformatik und Electronic Government

    2012-07-01

    Due to increased legal restrictions, higher energy costs as well as the growing energy consciousness of the population, in recent years the energy-efficient production has increased in importance. Manufacturing Execution Systems (MES) have a high potential in the recognition of potential savings and in the creation of solutions due to their direct application in production. The Center for Enterprise Research (Potsdam, Federal Republic of Germany) has queried many MES vendors about their functionality as well as the possibilities of the systems in the field of energy efficiency. Answers to 39 systems are received.

  10. Metagenome-Assembled Genome Sequences of Acetobacterium sp. Strain MES1 and Desulfovibrio sp. Strain MES5 from a Cathode-Associated Acetogenic Microbial Community.

    Science.gov (United States)

    Ross, Daniel E; Marshall, Christopher W; May, Harold D; Norman, R Sean

    2017-09-07

    Draft genome sequences of Acetobacterium sp. strain MES1 and Desulfovibrio sp. strain MES5 were obtained from the metagenome of a cathode-associated community enriched within a microbial electrosynthesis system (MES). The draft genome sequences provide insight into the functional potential of these microorganisms within an MES and a foundation for future comparative analyses. Copyright © 2017 Ross et al.

  11. INFLUENCIA DEL AMAMANTAMIENTO CONTROLADO Y DEL EFECTO MACHO SOBRE EL RESTABLECIMIENTO DE LA ACTIVIDAD OVÁRICA POSPARTO EN LA OVEJA PELIBUEY

    Directory of Open Access Journals (Sweden)

    Gladis Morales-Terán

    2011-11-01

    Full Text Available Se determinó el efecto del amamantamiento y del efecto macho sobre la duración del anestro posparto en ovejas Pelibuey y sobre el peso corporal de éstas y sus crías. Siete días después del parto 56 ovejas adultas y sus crías fueron asignadas al azar a los tratamientos: T1 Amamantamiento continuo (CS; n=14; T2 Amamantamiento controlado (RS; n=14; T3 Amamantamiento continuo con carnero (CSR; n=14; y T4 Amamantamiento controlado con carnero (RSR; n=14. Un carnero con mandil fue introducido con las ovejas del día 7 al 60 posparto por 30 min dos veces al día. El peso corporal de ovejas y corderos se registró semanalmente del parto al destete. El porcentaje de ovulación en los primeros 60 días posparto fue mayor en RSR (100 %; P ≤ 0.05 que en RS, CSR y CS (57.1, 64.8 y 35.7 %, respectivamente. El control del amamantamiento redujo (P ≤ 0.05 el intervalo parto-primera ovulación (ILFO en RSR (42.07±2.8 días con respecto a RS, CSR y CS (51.07±3.24, 50.50±3.26 y 56.71±1.73 días, respectivamente. No hubo diferencias (P > 0.05 en peso corporal de ovejas y corderos. La interacción amamantamiento controlado-efecto macho aumentó el porcentaje de ovulación antes del día 60 posparto y redujo el ILFO, sin afectar el peso corporal de ovejas y corderos.

  12. Barreras y facilitadores para actividad física durante el embarazo y posparto en mujeres pobres de México

    Directory of Open Access Journals (Sweden)

    Ana Lilia Lozada-Tequeanes

    2015-05-01

    Full Text Available Objetivo. Explorar percepciones de proveedores de salud y beneficiarias del Programa Oportunidades sobre la práctica de actividad física durante el embarazo y posparto, e identificar características de la consejería sobre el tema en el primer nivel de atención en salud. Material y métodos. Estudio de métodos mixtos que forma parte de una intervención en nutrición del Programa Oportunidades. La información cualitativa se colectó por entrevista (50 mujeres; 34 proveedores de salud y se obtuvo información cuantitativa a partir de un cuestionario (n=88 mujeres; n=64 proveedores; n=111 observaciones de consulta. Resultados. Se documentaron barreras a individuales: falta de tiempo y de apoyo social; b socioculturales: prejuicios de pares y familiares, y falta de instructores, y c ambientales: falta de espacios físicos seguros y apropiados. 38% de las mujeres reporta haber recibido consejería sobre el tema versus 63.4% de proveedores que reportan haberla dado (p=0.002. Conclusiones. Urgen capacitación a proveedores y promoción de la actividad física que eliminen los prejuicios asociados al tema durante el embarazo y posparto.

  13. BENCHMARKING AND CONFIGURATION OF OPENSOURCE MANUFACTURING EXECUTION SYSTEM (MES APPLICATION

    Directory of Open Access Journals (Sweden)

    Ganesha Nur Laksmana

    2013-05-01

    Full Text Available Information now is an important element to every growing industry in the world. Inorder to keep up with other competitors, endless improvements in optimizing overall efficiency areneeded. There still exist barriers that separate departments in PT. XYZ and cause limitation to theinformation sharing in the system. Open-Source Manufacturing Execution System (MES presentsas an IT-based application that offers wide variety of customization to eliminate stovepipes bysharing information between departments. Benchmarking is used to choose the best Open-SourceMES Application; and Dynamic System Development Method (DSDM is adopted as this workguideline. As a result, recommendations of the chosen Open-Source MES Application arerepresented.Keywords: Manufacturing Execution System (MES; Open Source; Dynamic SystemDevelopment Method (DSDM; Benchmarking; Configuration

  14. A methodology for Manufacturing Execution Systems (MES) implementation

    Science.gov (United States)

    Govindaraju, Rajesri; Putra, Krisna

    2016-02-01

    Manufacturing execution system is information systems (IS) application that bridges the gap between IS at the top level, namely enterprise resource planning (ERP), and IS at the lower levels, namely the automation systems. MES provides a media for optimizing the manufacturing process as a whole in a real time basis. By the use of MES in combination with the implementation of ERP and other automation systems, a manufacturing company is expected to have high competitiveness. In implementing MES, functional integration -making all the components of the manufacturing system able to work well together, is the most difficult challenge. For this, there has been an industry standard that specifies the sub-systems of a manufacturing execution systems and defines the boundaries between ERP systems, MES, and other automation systems. The standard is known as ISA-95. Although the advantages from the use of MES have been stated in some studies, not much research being done on how to implement MES effectively. The purpose of this study is to develop a methodology describing how MES implementation project should be managed, utilising the support of ISA- 95 reference model in the system development process. A proposed methodology was developed based on a general IS development methodology. The developed methodology were then revisited based on the understanding about the specific charateristics of MES implementation project found in an Indonesian steel manufacturing company implementation case. The case study highlighted the importance of applying an effective requirement elicitation method during innitial system assessment process, managing system interfaces and labor division in the design process, and performing a pilot deployment before putting the whole system into operation.

  15. ESTRATEGIA INTEGRAL PARA PyMES INNOVADORAS

    Directory of Open Access Journals (Sweden)

    Jairo Sanchez Quintero

    2003-07-01

    Full Text Available La administración y la planeación prospectivas, La planeación estratégica y la logística englobanlas necesidades de direccionamiento estratégico de las empresas a nivel mundial. Estos tres elementos  actúan como un trípode. Es decir, si falta uno de ellos no podrá haber estabilidad. La prospectiva aporta el análisis y construcción de escenarios futuros además del análisis de actores. La planeación estratégica (unida a la prospectiva permite el análisis de las variables internas y externas para formular los propósitos (misión, visión, objetivos y metas, las estrategias, los planes de acción y los indicadores de desempeño y logro, tanto para la empresa en su totalidad como para cada área de la misma en particular. Finalmente, la logística permite agregar valor e integrar los procesos transversales de la empresa, ya que se ocupa del mejoramiento de actividades desde la compra de materias primas o insumos hasta la distribución y el servicio al cliente en actividades de postventa. En este artículo, se presentan los hallazgos centrales de la investigación exploratoria sobre planeación prospectiva, estratégica y logística. Dicho estudio se concentra en una muestra de 29 empresas del sector de alimentos de Bogotá (19 empresas de lácteos y 10 de conservas y aplican una metodología de estudio de caso e Investigación y acción a cuatro empresas. El análisis de esta muestra empresarial y la revisión Bibliográfica realizada sentaron las bases para el diseño de la guía y la herramienta de mejora continua en estrategia, que forma parte de la caja de herramientas, fruto del trabajo del grupo PyMES, EAN durante el último año.

  16. Alimentación del recién nacido en el periodo de posparto inmediato

    Directory of Open Access Journals (Sweden)

    Silvina Berra

    2002-12-01

    Full Text Available OBJETIVO: Describir la modalidad de alimentación de los recién nacidos en instituciones públicas y privadas; y estudiar su relación con prácticas sanitarias de atención del parto y el puerperio y con caraterísticas sociodemográficas. MÉTODOS: Se estudiaron 347 binomios madre - hijo representativos de los nacimientos en maternidades públicas y privadas de la ciudad de Córdoba, Argentina. Las madres fueron entrevistadas entre las 24 y 48h posteriores al parto. Mediante análisis de regresión logística se estudió la asociación de las prácticas sanitarias con la modalidad de alimentación en la institución, controlando el efecto de factores sociodemográficos y perinatales, en instituciones públicas y privadas. Se realizó análisis de regresión logistica expressada en "odds ratio", con intervalo de confianza de un 95%. RESULTADOS: Recibieron lactancia materna exclusiva el 60,4% de los nacidos en instituciones públicas y el 2,9% de los nacidos en instituciones privadas. El riesgo de no tener lactancia materna completa en las instituciones públicas durante el postparto inmediato fue significativamente mayor cuando los niños recibieron un primer alimento diferente de leche materna [odds ratio (OR:149; Intervalo de confianza (IC 95%: 16,7-1332], el primer contacto se retrasó más de 45 minutos (OR:4,43; IC 95%: 1,02-19,20 y la intención de la madre fue amamantar menos de 6 meses (OR:5,80; IC95%: 1,32-25,52; y, en las privadas, cuando los niños recibieron un primer alimento diferente de leche materna (OR:9,88; IC 95%: 1,07-91,15. CONCLUSIONES: La atención del parto y el puerperio no es acorde a las recomendaciones actuales e influye en la modalidad de alimentación del recién nacido independientemente de otros factores estudiados.

  17. Alimentación del recién nacido en el periodo de posparto inmediato

    Directory of Open Access Journals (Sweden)

    Berra Silvina

    2002-01-01

    Full Text Available OBJETIVO: Describir la modalidad de alimentación de los recién nacidos en instituciones públicas y privadas; y estudiar su relación con prácticas sanitarias de atención del parto y el puerperio y con caraterísticas sociodemográficas. MÉTODOS: Se estudiaron 347 binomios madre - hijo representativos de los nacimientos en maternidades públicas y privadas de la ciudad de Córdoba, Argentina. Las madres fueron entrevistadas entre las 24 y 48h posteriores al parto. Mediante análisis de regresión logística se estudió la asociación de las prácticas sanitarias con la modalidad de alimentación en la institución, controlando el efecto de factores sociodemográficos y perinatales, en instituciones públicas y privadas. Se realizó análisis de regresión logistica expressada en "odds ratio", con intervalo de confianza de un 95%. RESULTADOS: Recibieron lactancia materna exclusiva el 60,4% de los nacidos en instituciones públicas y el 2,9% de los nacidos en instituciones privadas. El riesgo de no tener lactancia materna completa en las instituciones públicas durante el postparto inmediato fue significativamente mayor cuando los niños recibieron un primer alimento diferente de leche materna [odds ratio (OR:149; Intervalo de confianza (IC 95%: 16,7-1332], el primer contacto se retrasó más de 45 minutos (OR:4,43; IC 95%: 1,02-19,20 y la intención de la madre fue amamantar menos de 6 meses (OR:5,80; IC95%: 1,32-25,52; y, en las privadas, cuando los niños recibieron un primer alimento diferente de leche materna (OR:9,88; IC 95%: 1,07-91,15. CONCLUSIONES: La atención del parto y el puerperio no es acorde a las recomendaciones actuales e influye en la modalidad de alimentación del recién nacido independientemente de otros factores estudiados.

  18. Communication Standards Suitable for MES Systems Designed for SMES

    Directory of Open Access Journals (Sweden)

    Ondřej WINKLER

    2009-06-01

    Full Text Available A MES (Manufacturing Execution System is a system that large companies use to measure or control critical production activities. Individual parts of this system can be used as a model for development of tools suitable for small and medium enterprises (SMEs. It can demonstrate how manufacturing systems works and which communication standards are usable. The communication standards enable data acquisition, data processing, storing and their conversion for any production report. Furthermore, interfaces for web clients allow displaying the raw or transformed data as a text or a graphic chart. The development of tools for an access to the data retrieved from MES software is described in this paper.

  19. Factores clave para el proceso de gestion de la innovacion para el desarrollo de nuevos productos en el sector PyMEs, caso de estudio la industria de tecnologias de la informacion en Nuevo Leon

    Directory of Open Access Journals (Sweden)

    Oscar Enrique Lopez Treviño

    2010-07-01

    Full Text Available The purpose of this study is to analyze the key factors for managing the product innovation process, from existing models over time. Different proposals are presented by different authors who have studied this phenomenon, and as a result of these have conceptualized the knowledge in different models of innovation, so this work focuses on meeting certain elements in a new model including a new variable was not been considered in previous models (Organizational Creativity. This study was focused on SMEs and their importance in the economy of any country. The analysis of results and findings are presented from a study of 53 samples to the industry of information technology in Nuevo León, México.

  20. Factores para el estudio de la relación entre el grado de control familiar y el desempeño organizacional de las MIPyMEs familiares en el Área Metropolitana de Monterrey

    Directory of Open Access Journals (Sweden)

    Armando Pena Hinojosa

    2012-07-01

    Full Text Available The motors that move and drive the economies and societies of any country are the strength of the companies and might of the owners. At present, the importance of familyowned micro, small and medium sized companies is well known within the economies of the different Latin American and Caribbean countries; although, it is impossible to quantify exactly, the MSMEs are a key component in the contribution of economic growth, competitiveness, innovation, and in the generation of employment in any country; consequently, many governments and private institutions have initiated programs to promote this enterprising segment. It is not any different here in Mexico, as the above mentioned companies provide 50% of total employment and, in addition, 90% are family owned. This is where family influence or control becomes one of the important factors that have been proposed by the scientific academia as determining the organizational performance of a company. Based on this premise, the main topic of this article is to examine how the degree of family control affects the performance of said companies.

  1. ProMES: A method for "accepted control loops"

    NARCIS (Netherlands)

    Tuijl, van H.F.J.M.

    1997-01-01

    ProMES, a method for the measurement and feedback of performance data is related to the concepts of goal setting and feedback (Locke, 1991; Locke and Latham, 1990), and to the concept of self-control (Bandura, 1991). The result is a model for self-management: the "accepted control loop". Whether

  2. Componentes empresariales en las MIPyMES colombianas

    Directory of Open Access Journals (Sweden)

    Rafael Ignacio Pérez Uribe

    2013-07-01

    Full Text Available Varios estudios en Colombia evidencian las oportunidades de mejoramiento de este tipo de empresas. En este artículo solo mencionaremos los más representativos. En ellos se muestra de manera clara y suficiente a qué tienen que enfrentarse las MIPyMES para lograr una sostenibilidad que les permita ser empresas de clase mundial.

  3. Bistable minimum energy structures (BiMES) for binary robotics

    International Nuclear Information System (INIS)

    Follador, M; Conn, A T; Rossiter, J

    2015-01-01

    Bistable minimum energy structures (BiMES) are devices derived from the union of the concepts of dielectric elastomer minimum energy structures and bistable systems. This article presents this novel approach to active, elastic and bistable structures. BiMES are based on dielectric elastomer actuators (DEAs), which act as antagonists and provide the actuation for switching between the two equilibrium positions. A central elastic beam is the backbone of the structure and is buckled into the minimum energy configurations by the action of the two DEAs. The theory and the model of the device are presented, and also its fabrication process. BiMES are considered as fundamental units for more complex structures, which are presented and fabricated as proof of concept. Two different ways of combining the multiple units are proposed: a parallel configuration, to make a simple gripper, and a serial configuration, to generate a binary device. The possibility of using the bistable system as a continuous bender actuator, by modulating the actuation voltage of the two DEAs, was also investigated. (paper)

  4. Embarazo no deseado en adolescentes, y utilización de métodos anticonceptivos posparto Unwanted adolescent pregnancy and post-partum utilization of contraceptive methods

    Directory of Open Access Journals (Sweden)

    Rosa María Núñez-Urquiza

    2003-01-01

    Full Text Available OBJETIVO: Describir la proporción de embarazo no deseado en adolescentes, su asociación con características sociodemográficas y la utilización de anticonceptivos posparto. MATERIAL Y MÉTODOS: Se trata de un estudio transversal con una muestra de 220 mujeres adolescentes entre 13 y 19 años de edad, de dos municipios semiurbanos del estado de Morelos, México, entrevistadas entre 1992 y 1994. Las mujeres fueron entrevistadas en su casa entre seis y 12 semanas después del parto. Se les preguntó si antes de embarazarse desearon el último embarazo. Además, se indagó sobre conocimientos y uso de métodos anticonceptivos posparto. RESULTADOS: Un 17% de todos los nacimientos registrados en la población total en ese periodo fueron producto de madres adolescentes. De éstas, 22.73% declararon que su embarazo no fue deseado. Se encontró una asociación positiva entre no tener derecho de acceso a los servicios de salud de las instituciones del sistema de seguridad social -Instituto Mexicano del Seguro Social (IMSS, Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE- y embarazo no deseado (RM ajustada=3.03, IC 95% 1.31, 7. Asimismo, las adolescentes de comunidades urbanas manifestaron no deseo del embarazo con mayor frecuencia que las mujeres de comunidades rurales (RM ajustada=2.16, IC 95% 1.08, 4.33. Un 91.3% de las madres adolescentes enunció la píldora anticonceptiva entre los métodos que conocía. Un 84.72% conocía el DIU y 63.68% el condón. Sin embargo, sólo 35% estaba utilizando algún método anticonceptivo efectivo después de las seis semanas posparto. No se encontró diferencia en la frecuencia de uso de anticonceptivos según deseo del último embarazo. Entre quienes se atendieron el parto en centros de salud u hospital sólo 43.39% estaba utilizando algún método efectivo de planificación familiar. CONCLUSIONES: Estos hallazgos sugieren que los programas de planificación familiar tienen un

  5. MES lead bismuth forced circulation loop and test results

    International Nuclear Information System (INIS)

    Ono, Mikinori; Mine, Tatsuya; Kitano, Teruaki; Kamata, Kin-ya

    2003-01-01

    Liquid lead-bismuth is a promising material as future reactor coolant or intensive neutron source material for accelerator driven system (ADS). Mitsui Engineering and Shipbuilding Co., Ltd. (MES) completed lead-bismuth coolant (LBC) forced circulation loop in May 2001 and acquired engineering data on economizer, electro magnetic pump, electro magnetic flow meter and so on. For quality control of LBC, oxygen sensor and filtering element are developing using some hydrogen and moisture mixed gases. Structural materials corrosion test for accelerator driver system (ADS) will start soon. And thermal hydraulic test for ADS will start in tree years. (author)

  6. La mujer en posparto: un fenómeno de interés e intervención para la disciplina de enfermería

    Directory of Open Access Journals (Sweden)

    Claudia Maria Moreno Mojica

    2014-11-01

    Full Text Available Introducción: El posparto constituye un fenómeno de interés para la disciplina de enfermería, y ostenta una trayectoria histórica desde el inicio de las prácticas de cuidado; es una etapa determinante para la mujer por la complejidad que deriva el proceso de convertirse en madre. El objetivo del artículo es reconocer y analizar las necesidades de la mujer en pos parto, como base para la  construcción de herramientas para la planeación del cuidado y auto cuidado de la diada, que fomenten la activación del rol maternal y la disminuyan de la morbi-mortalidad materno- perinatal; a parir de la revisión sistemática e integrativa de literatura científica. Materiales y Métodos: Revisión de bases de datos LILACS, PUBMED, SciELO, SCOPUS, SCIENCE DIRECT, EBSCO; Para guiar la revisión de artículos se formuló la siguiente pregunta ¿Cuáles son los productos científicos relacionados con las necesidades de la mujer en pos parto, que lleven a la construcción de intervenciones de enfermería? Resultados: Se seleccionaron 70 artículos y se realizó la lectura exploratoria para la selección de textos para el análisis; La muestra final de esta revisión fueron 50 artículos  citados en el estudio. Discusión y Conclusiones: Enfermería como profesión, debe estructurar  intervenciones sustentadas en teoría disciplinar que permitan actuar sobre las necesidades de la mujer en pos parto a partir del apoyo social que  hace referencia a la cantidad de ayuda que recibe realmente, la satisfacción que produce esa ayuda y las personas (enfermería que la proporcionan, el cual permitirá brindar cuidado humanizado, individual, personalizado de reciprocidad a la mujer ,recién nacido, pareja y/o familia como medio para disminuir la morbi-mortalidad al mejorar su calidad de vida.Palabras clave: Puerperio, Cuidado de Enfermería, Cuidado Domiciliario. (Fuente: DeCS BIREME.Cómo citar este artículo: Moreno C, Rincón T, Arenas YM, Sierra D, Cano

  7. Prenatal multiple micronutrient supplementation impact on biochemical indicators during pregnancy and postpartum Efecto de la suplementación prenatal con micronutrimentos múltiples en indicadores bioquímicos durante el embarazo y el posparto

    Directory of Open Access Journals (Sweden)

    Armando García-Guerra

    2009-08-01

    el estado de Morelos, México, entre 1997 y 2000. Las mujeres fueron asignadas aleatoriamente a recibir un suplemento de MM (n= 249 o Fe (n= 258 diariamente (6 días/semana, cuyo consumo fue supervisado por personal de campo, desde la evaluación basal (aproximadamente 9 semanas de gestación hasta el parto. En una submuestra de mujeres participantes, se tomaron muestras de sangre venosa, a las 9 y 32 semanas de embarazo y al mes posparto (1PP. Se midieron las concentraciones séricas de zinc y retinol y la concentración de folato en sangre total, esta última sólo en la evaluación basal y al 1PP. Además se colectó una muestra de leche materna al 1PP, en donde se midió la concentración de retinol. RESULTADOS: En la evaluación basal no hubo diferencias significativas entre grupos en las concentraciones promedio de zinc y retinol, ni en la concentración de folato o en la prevalencia de deficiencias (Zn 12.2%, vitamina A 2.8%, folato 5.3%. El cambio promedio en zinc y retinol de la evaluación basal a la semana 32 de embarazo, no fue diferente entre grupos, tampoco entre la evaluación basal y al 1PP en zinc, retinol o folato. Al 1PP hubo una tendencia (p= 0.09 a menor prevalencia de deficiencia/depleción de folato en el grupo de MM (10.0% que en el grupo Fe (18.5%. CONCLUSIONES: La suplementación con MM durante el embarazo no mejoró el estado de zinc y vitamina A comparada con la suplementación sólo con Fe. Sin embargo, el estado de folato puede haber mejorado con la suplementación con MM, a pesar de la baja prevalencia de deficiencia de folato. La falta de efecto en vitamina A podría ser explicada por el adecuado estado de la misma en las mujeres estudiadas y la falta de efecto en el estado de zinc requiere futura exploración.

  8. Film Presentation: Big Bang, mes ancêtres et moi

    CERN Multimedia

    2010-01-01

    Big Bang, mes ancêtres et moi, by Franco-German TV producer ARTE (2009)   What do we know about the origins of the world today? This documentary presents a voyage into the mystery of these origins, accompanied by passionate scientists such as paleoanthropologist Pascal Picq, astrophysicist Hubert Reeves, physicist Etienne Klein and quantum gravity theorist Abhay Ashtekar. Organized around three key moments – the birth of the Universe, the appearance of life and the origins of mankind – this investigation takes us to various research areas around the world, including the large underground particle accelerator at CERN. The German version of this film, Big Bang im Labor, will be presented on 1st October. Big Bang, mes ancêtres et moi will be shown on Friday, 24 September from 13:00 to 14:00 in room 222-R-001 Language: French Big Bang im Labor will be shown on Friday, 1 October from 13:00 to 14:00 in the Main Auditorium Language : German   &nbs...

  9. PyMES INNOVADORAS. Cambio de Estrategias e Instrumentos

    Directory of Open Access Journals (Sweden)

    Juan Gonzalo Castellanos

    2003-07-01

    Full Text Available ¿Cómo hacer que las PyMES aumenten el valor de sus productos y servicios? ¿Cómo incorporar valor-conocimiento a la totalidad de la organización? Se intenta en este escrito introducir algunos conceptos útiles para comprender mejor la compleja realidad de los pequeños y medianos negocios en el mercado de hoy. En este artículo se trabajan conceptos relativos a la innovación como actividad primordial e integradora en el quehacer de una empresa competitiva y se revisan los resultados de diversos estudios sobre innovación y PyMES en el mundo desarrollado y en desarrollo, incluyendo los resultados del análisis de los casos elaborados dentro del ejercicio que promueve la Escuela de Administración de Negocios EAN en la línea de investigación sobre pequeñas y medianas empresas.

  10. Factors associated to breastfeeding cessation before 6 months Factores asociados al abandono de la lactancia materna durante los primeros 6 meses de vida Fatores associados ao abandono do aleitamento materno durante os primeiros seis meses de vida

    Directory of Open Access Journals (Sweden)

    Antoni Oliver Roig

    2010-06-01

    Full Text Available This research aimed to identify the determinants of full breastfeeding (FBF and any breastfeeding (ABF cessation before 6 months, through a six-month follow-up of 248 mothers going a postpartum visit. Data were collected by personal interview during the first month and telephone interviews at four and six months postpartum. Cox’s proportional hazards model was used. Not having previous ABF experience, previous ABF duration ≤4 months and worse evaluation of previous experience were associated with cessation of ABF and FBF. Lower educational level was associated with cessation of ABF and the use of pacifiers or occasional breast-milk substitutes with cessation of FBF. Attending childbirth education was a protective factor against early FBF or ABF cessation. Activities supporting breastfeeding should be intensified for mothers with poorer access to information and with negative or without ABF previous experience. The use of pacifiers and not-medically indicated breast milk substitutes should be controlled.El objetivo de la investigación fue identificar los factores asociados al abandono de la lactancia materna (LM y de la lactancia materna completa (LMC. Fueron acompañadas 248 madres que acudieron a la visita posparto. Los datos fueron recolectados mediante entrevista personal durante el primer mes posparto y por teléfono a los cuatro y seis meses siguientes. El análisis se realizó mediante la Regresión de Cox. Los resultados muestran una asociación con el abandono de la LMC y de la LM con no haber amamantado anteriormente, con LM anterior ≤4 meses, y, con una peor valoración de la experiencia anterior. El menor nivel de estudios se relaciona con un mayor abandono de la LM y los chupetes o suplementos en el hospital con el abandono de la LMC. La educación prenatal es un factor protector para la LMC y la LM. Se concluye que el apoyo a la LM debería intensificarse las madres: sin experiencia anterior, con experiencia negativa, y, con

  11. SYSTÈMES COMPTABLES DANS LE CONTEXTE DE LA MONDIALISATION

    Directory of Open Access Journals (Sweden)

    Loredana Oana Hutanu (Toma

    2013-09-01

    Full Text Available La comptabilité joue un rôle important dans les politiques économiques nationales et internationales et analysées dans le contexte de la mondialisation économique, l’harmonisation des normes comptables, a donné lieu au fil du temps, à une source continue de controverse. L'évolution de la comptabilité dans le contexte actuel est caractérisée par un phénomène d'harmonisation et de normalisation internationale. Cet article veut faire connaitre au public les deux principaux systèmes comptables existants et leur besoin d'harmonisation.

  12. mes – 113 route de Beaucaire

    OpenAIRE

    Bel, Valérie

    2013-01-01

    Date de l'opération : 1998 (SD) Inventeur(s) : Bel Valérie (AFAN) Plan général des opérations extra muros de Nîmes  (Fig. n°3 : Plan général des principales opérations rurales (1991-1998)). En préalable à l’établissement d’un bâtiment, un diagnostic archéologique a porté sur une parcelle de 2 115 m2 qui jouxte au sud la route de Beaucaire, à environ 1,3 km à l’est de l’enceinte antique [ (Fig. n°1 : Plan de localisation des opérations des 74-76, 81, 103, 113, route de Beaucaire sur fond cadas...

  13. Gouvernance des systèmes alimentaires urbains pour la prévention ...

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

    ... contre ces systèmes alimentaires en évolution et l'augmentation connexe des maladies ... les systèmes d'information et d'enregistrement des faits d'état civil dans les pays en ... GrowInclusive : la plateforme tant attendue est en construction.

  14. Analyste de systèmes intermédiaire (h/f) | CRDI - Centre de ...

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

    L'analyste de systèmes intermédiaire travaille sous la supervision du ... à la mise en œuvre et à la maintenance d'un large éventail de systèmes tout en assurant ... directement les consultants externes sous contrat afin de faciliter la transition ...

  15. Systèmes d'information sanitaire ou santé sexuelle et reproductive ...

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

    23 mai 2017 ... Systèmes d'information sanitaire ou santé sexuelle et reproductive des adolescents en Afrique de l'Ouest. Appel. Propositions. Programme(s) ... Sujet(s). Systèmes de santé, ADOLESCENTS, SANTÉ REPRODUCTIVE, DROITS EN MATIERE DE PROCREATION. Durée. 36 à 48 mois. Financée par. CRDI ...

  16. Variables que influyen en el comportamiento de la lactancia materna exclusiva hasta el sexto mes

    Directory of Open Access Journals (Sweden)

    William Cáceres Fernández

    Full Text Available Introducción: la lactancia materna exclusiva hasta los 6 meses se considera la alimentación ideal para el recién nacido, pues se ha demostrado que garantiza el crecimiento y desarrollo, previene enfermedades frecuentes en la infancia y en la edad adulta, y brinda múltiples ventajas para los niños y las madres. Objetivo: determinar algunas variables que influyen en el comportamiento de la lactancia materna exclusiva hasta el 6to mes de vida del recién nacido. Métodos: se realizó un estudio descriptivo retrospectivo a través de la aplicación de una encuesta a 56 madres de niños mayores de 6 meses, pertenecientes a 4 consultorios del médico de la familia del policlínico «Héroes del Moncada», en el periodo comprendido desde enero hasta diciembre de 2012. Se tomaron los datos necesarios de la madre y el niño mediante la aplicación de una encuesta y se vaciaron en un formulario elaborado al efecto. Resultados: el grupo de edad de 20-35 años fue el que predominó en las madres que mantuvieron la lactancia materna exclusiva hasta el sexto mes, con un 73,2 %; fueron las madres con nivel universitario (21,4 % las que tenían más conocimiento sobre las ventajas de la lactancia materna. En el 42,3 % de los casos se interrumpió la lactancia materna exclusiva por la incorporación al trabajo; y se enfermaron más aquellos niños que interrumpieron la lactancia. Conclusiones: existen factores como la edad menor de 20 ó mayor de 35 años, el bajo nivel cultural y la necesidad de reincorporación al trabajo, que atentan contra mantener una lactancia materna exclusiva hasta el sexto mes de vida del recién nacido.

  17. Systèmes de Gestion de Production et Systèmes de Contrôle de Gestion

    OpenAIRE

    Travaillé , Denis

    2009-01-01

    L'interrogation fondamentale des travaux de recherche porte sur la question de la séparabilité et de l'interaction entre système de gestion de production et système de contrôle de gestion. Le premier temps de la réflexion concerne la spécificité du contrôle de gestion en contexte de "Juste-à-Temps. Le second temps de la recherche est relatif aux systèmes d'information de production intégrés en relation avec le système de contrôle de gestion et au rôle des représentations comptables dans la qu...

  18. A Comparative Study of the Eco toxicity of Palm-Based Methyl Ester Sulphonates (MES) to Tilapia and Daphnia magna

    International Nuclear Information System (INIS)

    Razmah, G.; Afida, I.S.; Zulina, A.M.; Noorazah, Z.; Hazimah, A.H.

    2016-01-01

    Methyl ester sulphonates (MES) is a surfactant derived from plant resources, suitable as active ingredient in detergents. MES possesses good surface-active properties, good detergency and tolerant to water hardness. In this study, the eco toxicity of MES was evaluated through the 48 hr Daphnia magna immobilisation test and the 96 hr fish acute toxicity test with Tilapia. MES samples with different alkyl chain lengths (C14, C16 and C16:18) produced by the Malaysian Palm Oil Board (MPOB) and commercial MES (C16:18) were tested. Results from all tests indicated that Daphnia was more sensitive to toxic effects from MES than was Tilapia. There is also significant difference in eco toxicity responses for palm-based MES of various chain lengths regardless of the species tested. The eco toxicity increased as the hydrophobicity of the MES increased due to increase of alkyl chain length. However, less than 30 % of MES is used in detergent products and will not pose environmental effects on aquatic organisms. MES is therefore suitable for environmental compatible cleaning products in view of its eco toxicity that is on par to the widely used anionic surfactants, such as linear alkylbenzene sulphonate (LAS). The use of MES in cleaning products may help the industry to fulfil its social responsibility to a cleaner and better environment. (author)

  19. Zeolite/magnetite composites as catalysts on the Synthesis of Methyl Esters (MES) from cooking oil

    Science.gov (United States)

    Sriatun; Darmawan, Adi; Sriyanti; Cahyani, Wuri; Widyandari, Hendri

    2018-05-01

    The using of zeolite/magnetite composite as a catalyst for the synthesis of methyl esters (MES) of cooking oil has been performed. In this study the natural magnetite was extracted from the iron sand of Semarang marina beach and milled by high energy Milling (HEM) with ball: magnetite ratio: 1:1. The composites prepared from natural zeolite and natural magnetite with zeolite: magnetite ratio 1:1; 2:1; 3:1 and 4:1. Preparation of methyl ester was catalyzed by composite of zeolite/magnetite through transeserification reaction, it was studied on variation of catalyst concentration (w/v) 1%, 3%, 5% and 10% to feed volume. The reaction product are mixture of methyl Oleic (MES), methyl Palmitic (MES) and methyl Stearic (MES). Character product of this research include density, viscosity, acid number and iodine number has fulfilled to SNI standard 7182: 2015.

  20. La dévotion aux âmes du purgatoire à Rio de Janeiro

    OpenAIRE

    Augras, Monique

    2009-01-01

    La dévotion aux âmes du purgatoire est particulièrement vive à Rio de Janeiro. A peu près tolérée par l’Église catholique, elle réunit, chaque lundi, un nombre assez considérable de personnes qui viennent prier, allumer un cierge et déposer diverses offrandes afin de se ménager l’appui des « âmes » pour résoudre les problèmes les plus pressants. A la différence des saints du paradis, dont les vertus les éloignent peut-être du commun des gens, la dévotion aux âmes semble s’appuyer sur une nett...

  1. A Proposal for Production Data Collection on a Hybrid Production Line in Cooperation with MES

    Directory of Open Access Journals (Sweden)

    Znamenák Jaroslav

    2016-12-01

    Full Text Available Due to the increasing competitive environment in the manufacturing sector, many industries have the need for a computer integrated engineering management system. The Manufacturing Execution System (MES is a computer system designed for product manufacturing with high quality, low cost and minimum lead time. MES is a type of middleware providing the required information for the optimization of production from launching of a product order to its completion. There are many studies dealing with the advantages of the use of MES, but little research was conducted on how to implement MES effectively. A solution to this issue are KPIs. KPIs are important to many strategic philosophies or practices for improving the production process. This paper describes a proposal for analyzing manufacturing system parameters with the use of KPIs.

  2. The Use of BPMN for Modelling The MES Level in Information and Control Systems

    Directory of Open Access Journals (Sweden)

    Peter Michalik

    2013-07-01

    Full Text Available This paper describes how to use the process map to model the MES level of information and control systems. In the practical application, the BPMN standard was used for the design of the function of the management maintenance, which, according MES organization, is one of the 11 basic MES functions. The application was implemented on the flexible production line, located in the laboratory at the Department of Cybernetics and Artificial Intelligence. In this article, there is only one BPMN model of  a MES function from the set of modelled functions in our laboratory. These functions were also modelled by the UML Activity Diagram. Although the UML model is not included in this article, there is a comparison of these approaches based on selected criteria and our experiences with modelling in the laboratory at the university.

  3. A Proposal for Production Data Collection on a Hybrid Production Line in Cooperation with MES

    Science.gov (United States)

    Znamenák, Jaroslav; Križanová, Gabriela; Iringová, Miriam; Važan, Pavel

    2016-12-01

    Due to the increasing competitive environment in the manufacturing sector, many industries have the need for a computer integrated engineering management system. The Manufacturing Execution System (MES) is a computer system designed for product manufacturing with high quality, low cost and minimum lead time. MES is a type of middleware providing the required information for the optimization of production from launching of a product order to its completion. There are many studies dealing with the advantages of the use of MES, but little research was conducted on how to implement MES effectively. A solution to this issue are KPIs. KPIs are important to many strategic philosophies or practices for improving the production process. This paper describes a proposal for analyzing manufacturing system parameters with the use of KPIs.

  4. Incidencia de microorganismos mesófilos en la producción del agua de bebida envasada

    Directory of Open Access Journals (Sweden)

    Y. R. Corredor

    1994-09-01

    Full Text Available Con el fin de determinar una posible incidencia de microorganismos mesófilos en la producción del agua de bebida envasada, se analizaron los factores más importantes implicados en la producción. Para determinar la calidad del agua, se almacenó en diferentes tipos de envases (policarbonato, vidrio, polietileno de alta densidad (PAD, polietileno de baja densidad (PBD y polipropileno coextruído con polietileno (PCP, y posteriormente se realizaron recuentos totales para microorganismos mesófilos y número más probable paracoliformes totales y Pseudomona aeruginosa obteniéndose menores recuentos en el agua envasada  en vidrio. Posteriormente, se compararon los tratamientos de descontaminación del agua (cloraciónozonización utilizando dos tipos de envase (PBD y PCP, para determinar el material y tratamiento que conservan mejor las características organolépticas-fisicoquimicas y la menor incidencia de microorganismos mesófilos durante el tiempo de almacenamiento del producto. El envase más adecuado es el de PCP de calibre 2,5 con el tratamiento de cloro 0,6 pm; también se demostró que el crecimiento bacteria no fue un producto más del almacenamiento y el tipo de envase, ya que al realizar el muestre0 de los sistemas de producción, el agua fue siempre potable. Finalmente, se realizó un panel de saboreo, obteniéndose una preferencia del 80% de los encuestados, hacia el envase de PCP con el tratamiento de cloro.

  5. Soutien au programme de recherche du GCRAI sur les systèmes d ...

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

    Plus de 700 millions de personnes dépendent de systèmes d'aquaculture pour gagner leur vie. Ces systèmes agricoles diversifiés combinent culture, élevage, aquaculture, pêche et collecte de ressources naturelles comme les fruits, les graines, le bois et la faune. Toutefois, de nombreuses contraintes empêchent les petits ...

  6. Schéma directeur des Systèmes d'information 2012-2016

    OpenAIRE

    Institut National de Recherche Agronomique UAR 0776 Administration du siège

    2012-01-01

    Le schéma directeur des systèmes d’information de l’inra est le premier Schéma directeur dont l’institut se dote dans le champ des systèmes D’information. Il couvre la période 2012‐2016 du contrat d’objectifs Et s’inscrit dans les perspectives scientifiques dressées par le document D’orientation 2010‐2020

  7. PRIA ja MES teevad koostööd maaelu edendamiseks / Heli Raamets

    Index Scriptorium Estoniae

    Raamets, Heli, 1975-

    2004-01-01

    Ilmunud ka: Nädaline : Maakonna Talu Leht, 16. okt. 2004, lk. 1. Põllumajanduse Registrite ja Informatsiooni Amet (PRIA) ning Maaelu Edendamise Sihtasutus (MES) sõlmisid kokkuleppe, mille alusel külaelu arendajatel, kellele PRIA määras või määrab investeeringutoetuse, on võimalik saada omaosaluse rahastamiseks MES-ist laenu või tagatist pangalaenu jaoks

  8. Interkoneksi Stain, Bsm, Dan Mes Dalam Mengembangkan Ekonomi Islam: Studi Kasus Di Purwokerto

    OpenAIRE

    Dahlan, Ahmad

    2008-01-01

    STAIN, Bank Syariah Mandiri (BSM), and Masyarakat Ekonomi Syariah (MES, Syariah Economic Society) have important rolein the development of Islam economy in Purwokerto. This research result evidenced that these three institutions have an Islamic economydevelopment program according with vision and mission of their institution. STAIN as Islamic higher education is on curriculum design andlecture quality domain, BSM as banking financial institution on enhancing employee/manager quality, and MES ...

  9. INTERKONEKSI STAIN, BSM, DAN MES DALAM MENGEMBANGKAN EKONOMI ISLAM: STUDI KASUS DI PURWOKERTO

    OpenAIRE

    Dahlan, Ahmad

    2015-01-01

    STAIN, Bank Syariah Mandiri (BSM), and Masyarakat Ekonomi Syariah (MES, Syariah Economic Society) have important rolein the development of Islam economy in Purwokerto. This research result evidenced that these three institutions have an Islamic economydevelopment program according with vision and mission of their institution. STAIN as Islamic higher education is on curriculum design andlecture quality domain, BSM as banking financial institution on enhancing employee/manager quality, and MES ...

  10. Processes of Quantum Associative Memory (QuAM) Through New Maximally Entangled States (Singh-Rajput MES)

    Science.gov (United States)

    Singh, Manu Pratap; Rajput, B. S.

    2016-07-01

    Using Singh-Rajput MES as memory states in the evolutionary process of pattern storage and the non-evolutionary process of pattern recall (the two fundamental constituents of QuAM), the suitability and superiority of these MES over Bell's MES have been demonstrated in both these processes. It has been shown that, under the operations of all the possible memorization operators for a two-qubit system, the first two states of Singh-Rajput MES are useful for storing the pattern |11> and the last two of these MES are useful in storing the pattern |10> while Bell's MES are not much suitable as memory states in a valid memorization process. The recall operations have also been conducted by separately choosing Singh-Rajput MES and Bell's MES as memory states for possible various queries and it has been shown that in each case the choices of Singh-Rajput MES as valid memory states are much more suitable than those of Bell's MES.

  11. In vitro differentiation of mouse embryonic stem (mES) cells using the hanging drop method.

    Science.gov (United States)

    Wang, Xiang; Yang, Phillip

    2008-07-23

    Stem cells have the remarkable potential to develop into many different cell types. When a stem cell divides, each new cell has the potential to either remain a stem cell or become another type of cell with a more specialized function, This promising of science is leading scientists to investigate the possibility of cell-based therapies to treat disease. When culture in suspension without antidifferentiation factors, embryonic stem cells spontaneously differentiate and form three-dimensional multicellular aggregates. These cell aggregates are called embryoid bodies(EB). Hanging drop culture is a widely used EB formation induction method. The rounded bottom of hanging drop allows the aggregation of ES cells which can provide mES cells a good environment for forming EBs. The number of ES cells aggregatied in a hanging drop can be controlled by varying the number of cells in the initial cell suspension to be hung as a drop from the lid of Petri dish. Using this method we can reproducibly form homogeneous EBs from a predetermined number of ES cells.

  12. Systèmes multi-échelles, Modélisation et simulation

    Science.gov (United States)

    Le Bris, Claude

    Systèmes multi-échelles est une introduction à la problématique des systèmes multi-échelles du point de vue du mathématicien appliqué. Il se compose d'une mosaique d'exemples dont le seul lien est d'appartenir à la très grande famille des problèmes issus de la physique au sens large qui présentent pour leur modélisation et leur simulation cette difficulté essentielle de comporter en leur sein des échelles de temps oud'espace très différentes.

  13. Evaluación de un proyecto de éxito para PyMEs costarricenses

    OpenAIRE

    Quesada Pineda, Henry

    2013-01-01

    Los investigadores Henry Quesada y Marcela Meneses, de la Escuela de Ingeniería en Producción Industrial del Instituto Tecnológico de Costa Rica (TEC), realizaron una investigación durante el periodo 2007 a 2008 con la intención de identificar si existe un patrón en un modelo de negocios para pequeñas y medianas empresas (PyMEs) que les haya permitido ser competitivas a escala nacional o internacional. El aporte económico de las PyMEs en Costa Rica ha sido documentado en muchas investigacione...

  14. Factores que influyen en el abandono temprano de la lactancia por mujeres trabajadoras

    OpenAIRE

    Navarro-Estrella Manuel; Duque-López María Ximena; Trejo y Pérez Juan Antonio

    2003-01-01

    OBJETIVO: Identificar los factores maternos, laborales y de los servicios de salud que influyen en el abandono temprano de la lactancia materna en madres trabajadoras. MATERIAL Y MÉTODOS: Entre noviembre de 1998 y marzo de 1999 se efectuó un estudio transversal comparativo con madres derechohabientes del Instituto Mexicano del Seguro Social de Ensenada, Baja California, México. A 265 madres se les aplicó un cuestionario entre los tres y nueve meses posparto. Se distribuyeron en: grupo I: madr...

  15. Applications of Singh-Rajput Mes in Recall Operations of Quantum Associative Memory for a Two- Qubit System

    Science.gov (United States)

    Singh, Manu Pratap; Rajput, B. S.

    2016-03-01

    Recall operations of quantum associative memory (QuAM) have been conducted separately through evolutionary as well as non-evolutionary processes in terms of unitary and non- unitary operators respectively by separately choosing our recently derived maximally entangled states (Singh-Rajput MES) and Bell's MES as memory states for various queries and it has been shown that in each case the choices of Singh-Rajput MES as valid memory states are much more suitable than those of Bell's MES. it has been demonstrated that in both the types of recall processes the first and the fourth states of Singh-Rajput MES are most suitable choices as memory states for the queries `11' and `00' respectively while none of the Bell's MES is a suitable choice as valid memory state in these recall processes. It has been demonstrated that all the four states of Singh-Rajput MES are suitable choice as valid memory states for the queries `1?', `?1', `?0' and `0?' while none of the Bell's MES is suitable choice as the valid memory state for these queries also.

  16. The Moment of Learning: Quantitative Analysis of Exemplar Gameplay Supports CyGaMEs Approach to Embedded Assessment

    Science.gov (United States)

    Reese, Debbie Denise; Tabachnick, Barbara G.

    2010-01-01

    In this paper, the authors summarize a quantitative analysis demonstrating that the CyGaMEs toolset for embedded assessment of learning within instructional games measures growth in conceptual knowledge by quantifying player behavior. CyGaMEs stands for Cyberlearning through GaME-based, Metaphor Enhanced Learning Objects. Some scientists of…

  17. The epidemiology of alcohol utilization during pregnancy: an analysis of the Canadian Maternity Experiences Survey (MES

    Directory of Open Access Journals (Sweden)

    Islam Farah

    2011-07-01

    Full Text Available Abstract Background Maternal alcohol consumption during pregnancy may potentially constitute a major public health concern in Canada but despite this, the available epidemiological data on both rates and predictors of alcohol consumption during pregnancy is limited. The present study assessed the prevalence and predictors of maternal alcohol consumption during pregnancy of women living in Canada from 2005-2006 who had a singleton live birth and whose child remained in their care 5-9 months following birth. Prevalence of maternal alcohol consumption was examined across the Canadian provinces. Methods The analysis was based on the Maternity Experience Survey (MES, a population-based survey that assessed pregnancy, delivery and postnatal experiences of mothers and their children between November 2005 and May 2006. The main outcome variable assessed was ever drinking alcohol during pregnancy. The sample of mothers who drank during pregnancy consisted mainly of low to moderate level-alcohol drinkers (95.8%, while only 1.7% of the sample were heavy drinkers (>1 drink per day. Socio-economic factors, demographic factors, maternal characteristics, and pregnancy related factors that proved to be significant at the bivariate level were considered for a logistic regression analysis. Bootstrapping was performed to account for the complex sampling design. Results Analysis of 5882 mothers, weighted to represent 72,767 Canadian women, found that 10.8% of women drank alcohol at some point during their pregnancies. This mainly reflects prevalence of low to moderate maternal alcohol consumption. Prevalence of drinking alcohol during pregnancy was 13.8% in Eastern-Central provinces, 7.8% in Western Provinces-British Columbia, 4.1% in Eastern-Atlantic provinces and 4.0% in Western-Prairie Provinces. Utilizing alcohol during gestation was significantly associated with several important factors including marital status, smoking status, reaction to the pregnancy and

  18. Relativité problèmes résolus

    CERN Document Server

    Lumbroso, Hubert

    1979-01-01

    Ce recueil de problèmes de Relativité Restreinte s'adresse aux élèves des classes préparatoires aux grandes écoles d'ingénieurs (mathématiques spéciales) et aux étudiants du premier cycle universitaire scientifique (D.E.U.G.).

  19. Mot du Directeur régional Pleins feux surla recherche des systèmes ...

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

    Gloria Lihemo

    Afrique sub-saharienne. Nous y parlons du travail que fait le. CRDI pour appuyer la recherche des systèmes sanitaires qui prend en compte une approche holistique, interdisciplinaire pour une meilleure santé. Le CRDI reconnaît ...

  20. Analyste de systèmes principal (h/f) | CRDI - Centre de recherches ...

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

    L'analyste de systèmes principal travaille sous la supervision du ... une analyse fonctionnelle élémentaire des exigences en parlant de la portée et de la raison ... et l'infrastructure en matière de TI tout en se mettant à la place des techniciens, ...

  1. Gestionnaire, Systèmes financiers (h/f) | CRDI - Centre de ...

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

    Examiner et évaluer les répercussions des mises à niveau de l'infrastructure du CRDI .... Analyste des systèmes de gestion ... Le titulaire du poste établit le lien nécessaire entre les activités fonctionnelles financières et administratives et les ...

  2. Le renforcement des systèmes de santé | IDRC - International ...

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

    4 avr. 2013 ... Avec le soutien du CRDI, Walter Flores et une coalition dirigée par le Centro de Estudios para la Equidad y Gobernanza en los Sistemas de Salud ... Les briques et les clics sont importants; il est essentiel de disposer d'infrastructures convenables et de systèmes efficaces de gestion de l'information.

  3. Systèmes de recommandation et Recherche d'Information

    OpenAIRE

    Candillier , Laurent; Chai , Etienne; Delpech , Estelle

    2012-01-01

    National audience; Cet article traite de l'application des technologies de recommandation aux systèmes de Recherche d'Information. Nous y détaillons un cas d'application à la recherche de lieux à travers la présentation de l'annuaire Nomao.

  4. Multinational enterprises in regional innovation systems: attraction factors and integration mechanisms = Les entreprises multinationales dans les systèmes régionaux d'innovation: facteurs d'attraction et mécanismes d'intégration

    OpenAIRE

    Baier, Elisabeth

    2011-01-01

    This work explains mutual influences between MNEs and regional innovation networks during innovation processes. An analytical framework integrates different research perspectives and allows analysing the integration of MNEs in regional innovation networks through the identification of attraction factors and interaction mechanisms between regional and organisational learning.

  5. Initiatives canadiennes d'avant-garde en matière de systèmes de ...

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

    Initiatives canadiennes d'avant-garde en matière de systèmes de santé équitables et d'amélioration de la santé des mères et des enfants ... renforcement des systèmes de santé : d'une part, le recrutement des travailleurs de la santé, le maintien de cet effectif et, d'autre part, le rôle des systèmes d'information sur la santé.

  6. Análisis de los Factores que Influyen en el Éxito de la Transferencia Tecnológica desde los Institutos Tecnológicos a las PyMEs: los Casos de España y Brasil

    Directory of Open Access Journals (Sweden)

    Cassia Viviani Silva Santiago

    2006-10-01

    Full Text Available This article seeks to analyze a number of factors which may influence de process of technology transfer from technological institutes to enterprises. Taking as a reference a literature review and adding up our own knowledge regarding the subject, we have developed a model of technology transfer. This model has been applied to two samples of Spanish and Brazilian technological institutes. The main objective lies in identifying those factors that may have a greater influence on the scientific and financial success of those institutes. It has been carried out a thorough data analysis with the assistance of statistical tools such as: Bivariate Correlation Analysis, Multivariate Analysis and Multiple Regression Stepwise Method. The results show some similarities as well as differences when comparing the two samples. Our results clearly indicate that the Spanish institutes exhibit a greater experience and especialization on cooperative research with comercial companies. However, even within the same country there are different patterns of especialization: some institutes focus on their own research and others seek to satisfy the needs of companies.

  7. Architecture, des normes et des systèmes d'information libres, phase ...

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

    Architecture, des normes et des systèmes d'information libres, phase II (OASIS II) - Renforcement des capacités dans l'ensemble de l'Afrique. Sur presque tout le continent africain, la prestation des services de santé est limitée en raison des maigres ressources disponibles et de la charge de morbidité de plus en plus ...

  8. Armer les villes contre la faim : Systèmes alimentaires urbains ...

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

    Le XXe siècle a été le témoin d'une croissance massive des populations urbaines. ... On y explore le rôle que les structures existantes de marketing et de distribution peuvent jouer pour améliorer l'accessibilité, les systèmes de distribution alimentaire en émergence et leur apport éventuel à l'élimination de la faim dans les ...

  9. Consolidation des systèmes d'approvisionnement en Amérique ...

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

    Les technologies de l'information et de la communication (TIC) jouent un rôle clé dans la modernisation des systèmes d'administration publique, en général, ... Reporte final : VII Conferencia Anual sobre Compras Gubernamentales de las Américas, 18 al 20 de Octubre de 2011, Santo Domingo, República Dominicana.

  10. Systèmes d'information sur la santé

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

    personnel spécialisé — et bien souvent le leadership et la vision — pour ... Recourir aux données probantes pour réduire la mortalité maternelle au Nigeria. □ Incorporer les TIC aux systèmes de santé. □ Intégrer les collectivités à la surveillance du .... il y a lieu de mieux comprendre comment ces outils peuvent étayer la ...

  11. El efecto fin de mes en los principales mercados accionarios latinoamericanos

    Directory of Open Access Journals (Sweden)

    Werner Kristjanpoller Rodríguez

    2015-01-01

    Full Text Available En los mercados accionarios es frecuente encontrar anomalías de calendario, las cuales han sido objeto de diversos estudios en estas últimas décadas, incluso demostrándose que algunas de ellas a través del tiempo han ido desapareciendo. En este contexto, este artículo analiza una de estas anomalías, el efecto fin de mes, tanto en rendimiento como en volatilidad en los mercados accionarios de seis países latinoamericanos; a saber, Brasil, México, Chile, Colombia, Perú y Argentina en el periodo 1993-2011. La importancia de este estudio radica en poder probar si el efecto de fin de mes ha ido desapareciendo o aún persiste, ya que algunos efectos calendario en mercados accionarios desarrollados se han ido disipando. Los hallazgos de esta investigación, que se realizó de acuerdo con los tres periodos diferentes definidos en la literatura para analizar el impacto fin de mes, muestran que la mayoría de los países bajo análisis obtienen rendimientos anormales positivos en los días asociados al cambio de mes y también muestran anomalías en la volatilidad. Esta investigación no solamente analiza los índices característicos de cada mercado, sino que también las acciones en particular de cada uno, dotándolo de una muestra mucho mayor y exigente al momento de concluir sobre la existencia del fenómeno. También se incluye un análisis de volumen de transacción para verificar ciertas hipótesis del fenómeno asociadas a mayor flujo de efectivo.

  12. Actividades predominantes a nivel nacional, regional y local de las PyMEs industriales argentinas

    Directory of Open Access Journals (Sweden)

    Roark, Geraldina Yesica

    2013-06-01

    Full Text Available La creciente importancia e interés que han ido adquiriendo las Pequeñas y Medianas empresas (PyMEs en la actividad económica del país, ha originado la realización de diversos estudios, tanto de instituciones públicas como privadas, que a través de encuestas y registros han caracterizado diferentes temáticas para este tipo de empresas.En este contexto, el Departamento de Ingeniería Industrial de la Facultad de Ingeniería, perteneciente a la Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA, ubicado en la ciudad de Olavarría, se encuentra actualmente desarrollando un proyecto de investigación denominado "Cadena de valor e impacto de las actividades clave en la conducta competitiva de las PyMEs" con el objeto de evaluar sus cadenas de valor y generar propuestas de mejora que impacten positivamente en su competitividad y sustentabilidad en el sector al que pertenecen. Consecuentemente, la relevancia del presente estudio se focaliza en determinar las actividades predominantes de las PyMEs argentinas, a nivel nacional, regional y local, de forma tal de fundamentar la elección de la población objeto de estudio del citado proyecto.

  13. VizieR Online Data Catalog: HerMES Large Mode Survey catalogue (Asboth+, 2016)

    Science.gov (United States)

    Asboth, V.; Conley, A.; Sayers, J.; Bethermin, M.; Chapman, S. C.; Clements, D. L.; Cooray, A.; Dannerbauer, H.; Farrah, D.; Glenn, J.; Golwala, S. R.; Halpern, M.; Ibar, E.; Ivison, R. J.; Maloney, P. R.; Marques-Chaves, R.; Martinez-Navajas, P. I.; Oliver, S. J.; Perez-Fournon, I.; Riechers, D. A.; Rowan-Robinson, M.; Scott, D.; Siegel, S. R.; Vieira, J. D.; Viero, M.; Wang, L.; Wardlow, J.; Wheeler, J.

    2018-01-01

    The HerMES Large Mode Survey (HeLMS) consists of a large area shallow observation of an equatorial field at wavelengths of 250, 350 and 500um, obtained using the SPIRE aboard the Herschel Space Observatory. HeLMS is an extension of HerMES (Oliver et al., 2012MNRAS.424.1614O, Cat. VIII/95 and VIII/103), a 'wedding cake' type survey containing small and deep maps and larger shallower observations of different fields. HeLMS covers about 302deg2 of the sky, making it the largest area observed in the HerMES. The HeLMS field spans 23h14m

  14. Droits des femmes et accès à l'eau et aux systèmes d ...

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

    Partout sur la planète, les citadines pauvres doivent composer chaque jour avec les problèmes liés à l'absence de systèmes d'assainissement sûrs, abordables, accessibles et appropriées. L'ONG Women in Cities International (WICI) tente de trouver des moyens de remédier à cette situation en Inde. Cette subvention lui ...

  15. Characteristics of patients receiving midwife-led prenatal care in Canada: results from the Maternity Experiences Survey (MES).

    Science.gov (United States)

    Abdullah, Peri; Gallant, Sabrina; Saghi, Naseem; Macpherson, Alison; Tamim, Hala

    2017-06-02

    The aim of this study was to determine the characteristics of women in Canada who received care from a midwife during their prenatal period. The findings of this study were drawn from the Maternity Experiences Survey (MES), which was a cross-sectional survey that assessed the experiences of women who gave birth between November 2005 and May 2006. The main outcome variable for this study was the prenatal care provider (i.e. midwife versus other healthcare providers). Demographic, socioeconomic, as well as health and pregnancy factors were evaluated using bivariate and multivariate models of logistic regression. A total of 6421 participants were included in this analysis representing a weighted total of 76,508 women. The prevalence of midwife-led prenatal care was 6.1%. The highest prevalence of midwife-led prenatal care was in British Columbia (9.8%), while the lowest prevalence of midwife-led prenatal care was 0.3% representing the cumulative prevalence in Nova Scotia, Prince Edward Island, Newfoundland and Labrador, New Brunswick, Saskatchewan, and Yukon. Factors showing significant association with midwife-led prenatal care were: Aboriginal status (OR = 2.26, 95% CI: 1.41-3.64), higher education with bachelor and graduate degree attainment having higher ORs when compared to high-school or less (OR = 2.71, 95% CI: 1.71-4.31 and OR = 3.17, 95% CI: 1.81-5.55, respectively), and alcohol use (OR = 1.63, 95% CI: 1.17-2.26). Age, marital status, immigrant status, work during pregnancy, household income, previous pregnancies, perceived health, maternal Body Mass Index (BMI), and smoking during the last 3 months of pregnancy were not significantly associated with midwife care. In general, women who were more educated, have aboriginal status, and/or are alcohol drinkers were more likely to receive care from midwives. Since MES is the most recent resource that includes information about national midwifery utilization, future studies can provide more up

  16. Measures of star formation rates from infrared (Herschel) and UV (GALEX) emissions of galaxies in the HerMES fields

    Science.gov (United States)

    Buat, V.; Giovannoli, E.; Burgarella, D.; Altieri, B.; Amblard, A.; Arumugam, V.; Aussel, H.; Babbedge, T.; Blain, A.; Bock, J.; Boselli, A.; Castro-Rodríguez, N.; Cava, A.; Chanial, P.; Clements, D. L.; Conley, A.; Conversi, L.; Cooray, A.; Dowell, C. D.; Dwek, E.; Eales, S.; Elbaz, D.; Fox, M.; Franceschini, A.; Gear, W.; Glenn, J.; Griffin, M.; Halpern, M.; Hatziminaoglou, E.; Heinis, S.; Ibar, E.; Isaak, K.; Ivison, R. J.; Lagache, G.; Levenson, L.; Lonsdale, C. J.; Lu, N.; Madden, S.; Maffei, B.; Magdis, G.; Mainetti, G.; Marchetti, L.; Morrison, G. E.; Nguyen, H. T.; O'Halloran, B.; Oliver, S. J.; Omont, A.; Owen, F. N.; Page, M. J.; Pannella, M.; Panuzzo, P.; Papageorgiou, A.; Pearson, C. P.; Pérez-Fournon, I.; Pohlen, M.; Rigopoulou, D.; Rizzo, D.; Roseboom, I. G.; Rowan-Robinson, M.; Sánchez Portal, M.; Schulz, B.; Seymour, N.; Shupe, D. L.; Smith, A. J.; Stevens, J. A.; Strazzullo, V.; Symeonidis, M.; Trichas, M.; Tugwell, K. E.; Vaccari, M.; Valiante, E.; Valtchanov, I.; Vigroux, L.; Wang, L.; Ward, R.; Wright, G.; Xu, C. K.; Zemcov, M.

    2010-11-01

    The reliability of infrared (IR) and ultraviolet (UV) emissions to measure star formation rates (SFRs) in galaxies is investigated for a large sample of galaxies observed with the Spectral and Photometric Imaging Receiver (SPIRE) and the Photodetector Array Camera and Spectrometer (PACS) instruments on Herschel as part of the Herschel Multi-Tiered Extragalactic Survey (HerMES) project. We build flux-limited 250-μm samples of sources at redshift z 500 μm. Dust attenuation is discussed on the basis of commonly used diagnostics: the LIR/LUV ratio and the slope, β, of the UV continuum. A mean dust attenuation AUV of mag is measured in the samples. LIR/LUV is found to correlate with LIR. Galaxies with and 0.5 recipe commonly applied to local starbursts is found to overestimate the dust attenuation correction in our galaxy sample by a factor of ~2-3. The SFRs deduced from LIR are found to account for about 90 per cent of the total SFR; this percentage drops to 71 per cent for galaxies with (or ). For these faint objects, one needs to combine UV and IR emissions to obtain an accurate measure of the SFR.

  17. Mecanismos para la internacionalización de las PyMES

    OpenAIRE

    Zapata, Cristina I.

    2008-01-01

    Las empresas PyMEs son conscientes de la importancia que el proceso exportador tiene para el crecimiento y muchas veces hasta para su supervivencia. El comercio internacional representa un papel cada vez más relevante en el aporte a la actividad extractiva, industrial y de servicios de un país como Argentina. Las motivaciones y el desarrollo de estrategias de Marketing Internacional son la base para el logro del proceso exportación de las empresas PyME de Argentina. Facultad de Ciencias Ec...

  18. Non-Financial Performance Measurement for Shariah Banks : a Survey to Masyarakat Ekonomi Syariah (MES) Surakarta

    OpenAIRE

    Astuti, Septin Puji; Astika, Hari

    2011-01-01

    Measurement of non-financial performance in shariah banks is needed to enhance their market share and to maintain their long-term sustainability. The main aim of this research is to show the position of shariah banks in Surakarta in respect with their non-financial aspects (i.e. product, service, human resource and image) based on opinions given by members of Shariah Economic Society (MES) of Surakarta. Extent analysis for Fuzzy Analytic Hierarchy Process is employed to measure the non-financ...

  19. Diagnostic des systèmes de culture à base de mil [ Pennisetum ...

    African Journals Online (AJOL)

    Objectif : Le présent travail a pour objectif, de faire un état des lieux des systèmes de production à base de mil en Côte d'Ivoire septentrionale afin de proposer de nouvelles pistes d'amélioration. Méthodologie et résultats : L'approche méthodologique s'est reposée sur une enquête auprès des paysans sur le terrain dans ...

  20. La co-conception en partenariat de systèmes agricoles innovants

    Directory of Open Access Journals (Sweden)

    Vall Eric

    2016-01-01

    Full Text Available La co-conception de systèmes agricoles innovants est une piste prometteuse pour répondre au défi de l’innovation, notamment pour les exploitations agricoles familiales africaines confrontées à de multiples changements. Mais il faut penser à la place et aux rôles tenus par de multiples acteurs (agriculteurs, conseillers, chercheurs pour produire les changements souhaités par toutes les parties, et donc réfléchir à la question du partenariat dans le processus. Cet article présente la démarche de conception en partenariat de systèmes agricoles innovants (CPSAI élaborée entre 2005 et 2015 dans l’ouest du Burkina Faso, notamment sur la gestion de la fumure organique des cultures. La CPSAI s’appuie sur un dispositif partenarial formalisé et sur une démarche progressive en trois phases itératives : (1 exploration et formalisation du partenariat, (2 conceptions et test des options de changement, (3 bilan et désengagement. Les résultats obtenus montrent que l’innovation est plus efficace et durable quand elle est le produit d’un travail partenarial.

  1. PEMANFAATAN METIL ESTER JARAK PAGAR MENJADI SURFAKTAN MES UNTUK APLIKASI SEBAGAI OIL WELL STIMULATION AGENT

    Directory of Open Access Journals (Sweden)

    Erliza Hambali

    2012-04-01

    Full Text Available Year by year, globally the production of petroleum decreases but its demand increases. The world will get the energy crisis including Indonesia if that condition happens continously. Because of that, Indonesia starts to develop IOR (improved oil recovery method for their oil fields. IOR method is an improvement of the secondary phase in which the oil recovery is expected to increase oil production. One method of IOR is chemical injection with surfactant for injection. Surfactant is dissolved with injection water and injected to reservoir. Generally, surfactant of petroleum sulphonates is used for oil recovery. Due to the weaknesses of petroleum suphonates such as not resistant in high salinity and high hardness water, therefore it triggers to get surfactant substitute like MES (methyl ester sulphonates that is synthesized by bio-oil from Jatropha curcas L. The study was aimed to know the performance of MES surfactant formula from jatropha oil for IOR in fluid sample of oil field and synthetic sandstone core. The best condition from this research was surfactant 0.2 PV with the soaking time of 12 hours. This formula gave the highest of incremental total oil recovery 61%. The number were resulted from 48% waterflooding and 13% surfactant injection.

  2. Volumetric properties of MES, MOPS, MOPSO, and MOBS in water and in aqueous electrolyte solutions

    International Nuclear Information System (INIS)

    Taha, Mohamed; Lee, Ming-Jer

    2010-01-01

    4-Morpholineethanesulfonic acid (MES), 4-morpholinepropanesulfonic acid (MOPS), 3-morpholino-2-hydroxypropanesulfonic acid (MOPSO), and 4-(N-morpholino)butanesulfonic acid (MOBS), are useful for pH control as standard buffers in the physiological region of 5.5-6.7 for MES, 6.5-7.9 for MOPS, 6.2-7.6 for MOPSO, and 6.9-8.3 for MOBS, respectively. On the basis of density measurements at 298.15 K, the apparent molar volumes, V φ , of the above-mentioned buffers in water and in (0.05, 0.16, and 0.25) mol kg -1 aqueous solutions of NaCl, KCl, KBr, and CH 3 COOK have been calculated. The partial molar volumes at infinite dilution, V φ o , obtained from V φ , have been used to calculate the volume of transfer, Δ tr V φ o , from water to aqueous electrolyte solutions. It was found that both V φ o and Δ tr V φ o vary linearly with increasing the number of carbon atoms in the alkyl group side chain of the zwitterionic buffers. These linear correlations have been utilized to estimate the contributions of the zwitterionic end group (morpholinium ion, -SO 3 - ) and -CH 2 - group to V φ o and Δ tr V φ o . The values of V φ o and Δ tr V φ o for some functional group contributions of the zwittierionic buffers with salts have also been reported.

  3. Solvation consequences of polymer PVP with biological buffers MES, MOPS, and MOPSO in aqueous solutions

    International Nuclear Information System (INIS)

    Gupta, Bhupender S.; Chen, Bo-Ren; Lee, Ming-Jer

    2015-01-01

    Highlights: • Densities and viscosities data for aqueous solutions with PVP and/or buffer. • The studied buffers include MES, MOPS, and MOPSO. • DFT was used to estimate the binding energies of the (PVP + buffer) complexes. • The viscosity data were correlated with the Jones–Dole equation. • The investigated buffers behave as Kosmotropies. - Abstract: Densities and viscosities were measured for the aqueous buffer (MES, MOPS, or MOPSO) solutions containing different concentrations of polyvinylpyrrolidone (PVP) (5, 10, 15, 20 and 30) mass% at temperatures from (298.15 to 318.15) K under atmospheric pressure. The DFT calculations were also performed and the binding energies of the possible (PVP + buffer) complexes were obtained. The experimental and computational results reveal the interactions of the PVP with the constituent compounds in the aqueous buffer solutions. Additionally we have explored the solvation behavior of the buffers by measuring the densities and the viscosities data of the aqueous buffer solutions from (0.0 to 1.0) mol · kg"−"1 at temperatures from (298.15 to 318.15) K. The viscosity results were correlated with the Jones–Dole equation. The correlated results confirmed that all the investigated buffers behave as Kosmotropes (structure makers).

  4. PyMES COLOMBIANAS Y LA GESTIÓN DEL CONOCIMIENTO

    Directory of Open Access Journals (Sweden)

    Andrea Carolina Bustos Claro

    2003-07-01

    Full Text Available En los últimos años, la adaptación de modelos e-business se ha convertido en un elemento de vital importancia para las organizaciones, hasta el punto de creer que ésta es la mejor forma de crear una ventaja competitiva en el mercado global. Sin embargo, es necesario tener presente que la existencia de la tecnología por sí sola, no asegura el éxito. Se requiere además del cambio de algunos paradigmas organizacionales: lacultura, los niveles jerárquicos y el manejo que se le da a la información y a la comunicación. Gracias a los resultados obtenidos en el proyecto “Indicadores Pragmáticos de Gestión del Conocimiento aplicado a páginas Web de PyMES colombianas”, adelantado por el Centro de Investigaciones de la EAN, se ha logrado un acercamiento a la situación actual de las páginas Web de las PyMES y su desempeño en la red.

  5. Pivotal Advance: Eosinophilia in the MES rat strain is caused by a loss-of-function mutation in the gene for cytochrome b(-245), alpha polypeptide (Cyba).

    Science.gov (United States)

    Mori, Masayuki; Li, Guixin; Hashimoto, Maiko; Nishio, Ayako; Tomozawa, Hiroshi; Suzuki, Nobuyoshi; Usami, Shin-ichi; Higuchi, Keiichi; Matsumoto, Kiyoshi

    2009-09-01

    MES is a rat strain that spontaneously develops severe blood eosinophilia as a hereditary trait. Herein, we report that eosinophilia in MES rats is caused by a loss-of-function mutation in the gene for cytochrome b(-245), alpha polypeptide (Cyba; also known as p22(phox)), which is an essential component of the superoxide-generating NADPH oxidase complex. The MES rat has a deletion of four nucleotides, including the 5' splice donor GpT of intron 4 of the Cyba gene. As a consequence of the deletion, a 51-nucleotide sequence of intron 4 is incorporated into the Cyba transcripts. Leukocytes from the MES strain lack both CYBA protein and NADPH oxidase activity. Nevertheless, unlike patients with chronic granulomatous disease, who suffer from infections with pathogens due to similar genetic defects in NADPH oxidase, MES rats retain normal innate immune defense against Staphylococcus aureus infection. This is due to large quantities of peritoneal eosinophils in MES rats, which phagocytose and kill the bacteria. MES rat has a balance defect due to impaired formation of otoconia in the utricles and saccules. Eosinophilia of the MES rat was normalized by introduction of a normal Cyba transgene. The mechanisms by which impairment of NADPH oxidase leads to eosinophilia in the MES rat are elusive. However, our study highlights the essential role of NADPH oxidase in homeostatic regulation of innate immunity beyond conventional microbicidial functions.

  6. Adopción por primera vez de la NIIF para las PyMEs en PyMEs argentinas: análisis normativo y cuestiones de aplicación

    OpenAIRE

    Rondi, Gustavo R.; Casal, María del Carmen; Galante, Marcelo Javier; Gómez, Melisa

    2013-01-01

    En el desarrollo de este trabajo se abordan las situaciones y dificultades de orden práctico que pueden presentarse cuando una PyME argentina decide adoptar por primera vez la NIIF para las PyMEs. Para ello, se han analizado el tratamiento que la NIIF para las PyMEs y las normas contables argentinas contemplan para los cambios de políticas contables; las simplificaciones, exenciones especiales y requerimientos específicos que la NIIF establece en su adopción por primera vez; y las principales...

  7. Optical bar code recognition of methyl salicylate (MES) for environmental monitoring using fluorescence resonance energy transfer (FRET) on thin films

    Science.gov (United States)

    Smith, Clint; Tatineni, Balaji; Anderson, John; Tepper, Gary

    2006-10-01

    Fluorescence resonance energy transfer (FRET) is a process in which energy is transferred nonradiatively from one fluorophore (the donor) in an excited electron state to another, the chromophore (the acceptor). FRET is distinctive in its ability to reveal the presence of specific recognition of select targets such as the nerve agent stimulant Methyl Salicylate (MES) upon spectroscopic excitation. We introduce a surface imprinted and non-imprinted thin film that underwent AC-Electrospray ionization for donor-acceptor pair(s) bound to InGaP quantum dots and mesoporous silicate nanoparticles. The donor-acceptor pair used in this investigation included MES (donor) and 6-(fluorescein-5-(and-6)- carboxamido) hexanoic acid, succinimidyl ester bound to InGaP quantum dots (acceptor). MES was then investigated as a donor to various acceptor fluorophore: InGaP: mesoporous silicate nanoparticle layers.

  8. Psychological Factors of Innovativeness among Nomadic Micro-Entrepreneurs for Achieving Business Growth

    Directory of Open Access Journals (Sweden)

    Seyedeh Khadijeh Taghizadeh

    2016-09-01

    Full Text Available The objective of this paper is to explore the psychological factors of innovativeness that drives nomadic micro entrepreneurs’ (MEs in enhancing their business growth in Malaysia. Nomadic micro entrepreneurs refer to those who regularly change the location of their business. To meet the research objective, the current study carried out in-depth interviews among the Nomadic MEs operating their business in Northern region, Malaysia. Twenty Nomadic MEs were interviewed on voluntary basis. Thematic analysis was conducted to identify the recurring themes that delineate psychological factors that may influence innovativeness. Interestingly, the findings revealed that the innovativeness of Nomadic MEs is influenced by four psychological characteristics namely sense of curiosity, interest, risk taking, and risk avoidance. The contribution of this study lies in the identification of four substantial psychological factors that act as a foundation for innovativeness among nomadic micro entrepreneurs’ (MEs in enhancing their business growth.

  9. Alimentación del recién nacido en el periodo de posparto inmediato Newborn feeding in the immediate pospartum period

    Directory of Open Access Journals (Sweden)

    Silvina Berra

    2002-12-01

    Full Text Available OBJETIVO: Describir la modalidad de alimentación de los recién nacidos en instituciones públicas y privadas; y estudiar su relación con prácticas sanitarias de atención del parto y el puerperio y con caraterísticas sociodemográficas. MÉTODOS: Se estudiaron 347 binomios madre - hijo representativos de los nacimientos en maternidades públicas y privadas de la ciudad de Córdoba, Argentina. Las madres fueron entrevistadas entre las 24 y 48h posteriores al parto. Mediante análisis de regresión logística se estudió la asociación de las prácticas sanitarias con la modalidad de alimentación en la institución, controlando el efecto de factores sociodemográficos y perinatales, en instituciones públicas y privadas. Se realizó análisis de regresión logistica expressada en "odds ratio", con intervalo de confianza de un 95%. RESULTADOS: Recibieron lactancia materna exclusiva el 60,4% de los nacidos en instituciones públicas y el 2,9% de los nacidos en instituciones privadas. El riesgo de no tener lactancia materna completa en las instituciones públicas durante el postparto inmediato fue significativamente mayor cuando los niños recibieron un primer alimento diferente de leche materna [odds ratio (OR:149; Intervalo de confianza (IC 95%: 16,7-1332], el primer contacto se retrasó más de 45 minutos (OR:4,43; IC 95%: 1,02-19,20 y la intención de la madre fue amamantar menos de 6 meses (OR:5,80; IC95%: 1,32-25,52; y, en las privadas, cuando los niños recibieron un primer alimento diferente de leche materna (OR:9,88; IC 95%: 1,07-91,15. CONCLUSIONES: La atención del parto y el puerperio no es acorde a las recomendaciones actuales e influye en la modalidad de alimentación del recién nacido independientemente de otros factores estudiados.OBJECTIVE: To describe the type of newborn feeding in public and private institutions and to investigate its relationship with health practices during delivery and in the puerperium and

  10. Les grands problèmes mathématiques ils orientent l'avenir des maths

    CERN Document Server

    2012-01-01

    Les mathématiques ont leurs sept merveilles ! Il s’agit des sept problèmes du millénaire, mis à prix à un million de dollars chacun par l’Institut Clay de mathématiques en 2000. Mais l’intelligence des mathématiciens est aussi mise à l’épreuve par bien d’autres problèmes, tels ceux de Hilbert. Découvrez dans ce numéro comment ces énigmes orientent l’avenir de la discipline ouvrant la voie à de nouvelles connaissances fondamentales.

  11. Un modelo asociativo con base tecnológica para la competitividad de PyMes: caso floricultor colombiano

    OpenAIRE

    Giraldo, Olga Lucia; Herrera, Andrea

    2004-01-01

    La globalización ha abierto los mercados haciendo que la tecnología desempeñe un papel clave en la búsqueda y logro de competitividad. Este estudio, basado en el enfoque de cluster, primero analiza la competitividad a la luz del diamante de Porter, de las PyMes colombianas centrándose en el sector floricultor; segundo estudia las áreas donde las tecnologías de información tendrían mayor impacto; y tercero propone soluciones asociativas, basadas en el modelo de ASP, para lograr que las PyMes t...

  12. [Mes differ by positioning: empirical testing of decentralized dynamics of the self].

    Science.gov (United States)

    Mizokami, Shinichi

    2013-10-01

    The present study empirically tested the conceptualization of the decentralized dynamics of the self proposed by Hermans & Kempen (1993), which they developed theoretically and from clinical cases, not from large samples of empirical data. They posited that worldviews and images of the self could vary by positioning even in the same individual, and denied that the ego was an omniscient entity that knew and controlled all aspects of the self (centralized ego). Study 1 tested their conceptualization empirically with 47 university students in an experimental group and 17 as a control group. The results showed that the scores on the Rosenberg's self-esteem scale and images of the Mes in the experimental group significantly varied by positioning, but those in the control group did not. Similar results were found in Study 2 with a sample of 120 university students. These results empirically supported the conceptualization of the decentralized dynamics of the self.

  13. PENENTUAN LAMA SULFONASI PADA PROSES PRODUKSI SURFAKTAN MES UNTUK APLIKASI EOR

    Directory of Open Access Journals (Sweden)

    Mira Rivai

    2011-04-01

    Full Text Available For producing oil remains that remained at old oil wells (mature field, a method of advanced oil acquirement improvement known as an Enhanced Oil Recovery (EOR should be applied. Surfactant plays an important role in EOR process by reducing interfacial tension (IFT, altering wettability, reducing oil viscosity, and stabilizing dispersion to facilitate the process of oil jetting from reservoir to production well. To optimally cleanse oil that still remained a surfactant compatible with formation water and reservoir is needed. This study was conducted to get the best time of sulfonation process for producing MES surfactant with lower interfacial tension for EOR application. Results showed that the best times of sulfonation process with lower interfacial tension value were 3 and 4 hours

  14. Estudio de marcadores de transición epitelio-mesénquima en neoplasias renales

    OpenAIRE

    Cadenas González, Nuria

    2016-01-01

    HIPÓTESIS: La expresión de ciertas proteínas, ligadas a eventos de transición epitelio-mesénquima en el cáncer renal, podrían estar relacionada con la agresividad biológica y comportarse como marcadores pronósticos. MATERIAL Y MÉTODOS: La población de estudio son 156 pacientes con cáncer renal de las cinco variedades histológicas más frecuentes: carcinoma de células claras (con el subtipo sarcomatoide), carcinoma papilar, carcinoma cromófobo y oncocitoma. El periodo mínimo de seguimiento s...

  15. Principales prácticas de recursos humanos de las PyMEs industriales exitosas.

    Directory of Open Access Journals (Sweden)

    Liliana Rocío López Suárez

    2013-04-01

    Full Text Available El éxito competitivo de la PyME depende en parte de la buena gestión de recursos humanos,por lo que no darle el valor que requiere constituye una de las principales causas de fracasode estas empresas. La responsabilidad de la gestión eficaz de los recursos humanos recae fundamentalmenteen los directivos. La presente investigación tiene como objetivo identificarlos estilos de dirección y las principales prácticas de recursos humanos que llevan a cabo lasPyMEs industriales exitosas de México y España. Para alcanzar los objetivos antes reseñados,se ha realizado un análisis documental, así como entrevistas en profundidad a expertosen el área de recursos humanos. En este trabajo se presentan los principales resultados conrespecto a las prácticas mencionadas.

  16. Effect of methotrexate conjugated PAMAM dendrimers on the viability of MES-SA uterine cancer cells

    Directory of Open Access Journals (Sweden)

    Samreen Khatri

    2014-01-01

    Full Text Available The aim of this work was to synthesize methotrexate (MTX-polyamidoamine (PAMAM dendritic nanoconjugates and to study their effect on cell viability in uterine sarcoma cells. The amide-bonded PAMAM dendrimer-MTX conjugates were prepared by conjugation between the amine-terminated G5 dendrimer and the carboxylic groups of the MTX using a dicyclohexylcarbodiimide coupling reaction. The formation of conjugates was evaluated by ultraviolet (UV and 1 H nuclear magnetic resonance ( 1 H NMR spectroscopy studies. The cell survival of MES-SA cells, a uterine sarcoma cell line, was evaluated in the presence of the dendrimer-MTX nanoconjugate, using appropriate controls. The UV and 1 H NMR study confirmed the formation of covalent bonds between the drug and the dendrimer. The cell viability study indicated that the nanoconjugates had significantly improved cell killing compared to the free MTX.

  17. Résister : les poèmes de guerre de Charles Camproux

    OpenAIRE

    Lassaque, Aurélia

    2014-01-01

    Charles Camproux, né à Marseille en 1908, fut publiquement reconnu comme poète suite à la parution des Poemas sens poesia. Ce premier recueil portant sur la captivité, composé « sot lo ceu d’Alemanha », fut publié peu après le retour de Camproux en France, par les soins d’Ismaël Girard à la SEO en 1942. Camproux composa au cours des deux années suivantes un ensemble de poèmes réunis tardivement sous le titre de Poëmas de Resistència. Contrairement à L’an quaranta e tres et au Bestiari, écrits...

  18. Silvio Pellico, Mes prisons : un “best-seller” de l'édification

    Directory of Open Access Journals (Sweden)

    Jean-Claude Vimont

    2012-06-01

    Full Text Available La France réserva un accueil enthousiaste à la traduction du récit de Silvio Pellico (1789-1854, Le mie prigioni. Les mémoires romantiques de ce « martyr de la liberté » italien, incarcéré pendant dix années sous les Plombs de Venise et dans la geôle autrichienne du Spielberg, furent réédités plus de cent cinquante fois en langue française de 1833 à 1914 . Nous cumulons pour atteindre ce chiffre, les traductions de Mes prisons, les traductions augmentées de chapitres inédits, les traductions...

  19. ‘El Mesías’: tradición, religiosidad y magnetismo

    Directory of Open Access Journals (Sweden)

    Marco Antonio De La Ossa Martínez

    2018-01-01

    En defnitiva, en este artículo nos acercaremos a la vida y obra de Haendel, su vinculación con Bach y la génesis y características de El Mesías. Además, incluiremos un poema que Dubosq escribió sobre Haendel, una discografía y flmografía recomendada sobre la obra, el índice de la misma y los textos en inglés y español. Tampoco olvidaremos citar algunas curiosidades, como la relación que le unió dos siglos después con Jimi Hendrix o un nuevo éxito del alemán nacionalizado inglés en el siglo XXI: el himno de la Champions League

  20. Systèmes de type radar appliqués aux domaines routiers et ferroviaires

    OpenAIRE

    DELOOF, P; GHYS, JP; RIVENQ, A; HAESE, N; SAINT-VENANT, M

    2001-01-01

    La détection d'obstacles par radar peut s'appliquer aussi bien au domaine des transports routiers qu'à ceux des transports en commun. Quelques uns de ces systèmes sont étudiés au LEOST dans le cadre du GRRT, Groupement Régional Nord Pas-de-Calais pour la Recherche dans les Transports. La plupart des capteurs micro-ondes furent réalisés par le DHS. Ils étaient fondés soit sur la modulation linéaire en fréquence (FMCW) soit sur la modulation par impulsions. Ces études ont mené à la réalisation ...

  1. Automated Inventory and Monitoring of the ALICE HLT Cluster Resources with the SysMES Framework

    International Nuclear Information System (INIS)

    Ulrich, J; Lara, C; Böttger, S; Kebschull, U; Haaland, Ø; Röhrich, D

    2012-01-01

    The High-Level-Trigger (HLT) cluster of the ALICE experiment is a computer cluster with about 200 nodes and 20 infrastructure machines. In its current state, the cluster consists of nearly 10 different configurations of nodes in terms of installed hardware, software and network structure. In such a heterogeneous environment with a distributed application, information about the actual configuration of the nodes is needed to automatically distribute and adjust the application accordingly. An inventory database provides a unified interface to such information. To be useful, the data in the inventory has to be up to date, complete and consistent. Manual maintenance of such databases is error-prone and data tends to become outdated. The inventory module of the ALICE HLT cluster overcomes these drawbacks by automatically updating the actual state periodically and, in contrast to existing solutions, it allows the definition of a target state for each node. A target state can simply be a fully operational state, i.e. a state without malfunctions, or a dedicated configuration of the node. The target state is then compared to the actual state to detect deviations and malfunctions which could induce severe problems when running the application. The inventory module of the ALICE HLT cluster has been integrated into the monitoring and management framework SysMES in order to use existing functionality like transactionality and monitoring infrastructure. Additionally, SysMES allows to solve detected problems automatically via its rule-system. To describe the heterogeneous environment with all its specifics, like custom hardware, the inventory module uses an object-oriented model which is based on the Common Information Model. The inventory module provides an automatically updated actual state of the cluster, detects discrepancies between the actual and the target state and is able to solve detected problems automatically. This contribution presents the current implementation

  2. ZASTOSOWANIE FUNKCJONAŁU HU-WASHIZU W PLASTYCZNEJ ANALIZIE MES PŁYT GRUBYCH

    Directory of Open Access Journals (Sweden)

    Jakub LEWANDOWSKI

    2016-07-01

    Full Text Available W pracy sformułowano oryginalny, autorski funkcjonał dla zagadnień teorii plastyczności. Podstawą był funkcjonał Hu-Washizu z teorii sprężystości. Przyrostowa postać funkcjonału pozwala w prosty sposób budować algorytmy MES. Zastosowanie funkcjonału przedstawiono na przykładzie płyty grubej. Zastosowano model warstwowy aby uwzględnić częściowe uplastycznienie przekroju płyty. Algorytm MES dla płyty grubej zbudowano w oparciu o trójkątny trzy węzłowy element skończony z liniowymi funkcjami kształtu dla wszystkich przemieszczeń uogólnionych. Naprężenia i odkształcenia w tego typu elemencie przyjmuje się jako stałe. Przedstawiony algorytm nie wymaga żadnych dodatkowych równań teorii plastyczności i jest równoważny stowarzyszonemu prawu płynięcia plastycznego. Algorytm prowadzi do nieliniowego, przyrostowego układu równań algebraicznych, który rozwiązuje się metodą Newtona. Kilka prostych przykładów pozytywnie weryfikuje przyjęte założenia i stosowane algorytmy.

  3. Protection of MES23.5 dopaminergic cells by obestatin is mediated by proliferative rather than anti-apoptotic action.

    Science.gov (United States)

    Shen, Xiao-Li; Jia, Feng-Ju; Song, Ning; Xie, Jun-Xia; Jiang, Hong

    2014-02-01

    Obestatin is an endogenous peptide sharing a precursor with ghrelin. This study aims to investigate whether and how obestatin protects MES23.5 dopaminergic cells against 1-methyl-4-phenylpyridinium (MPP(+))-induced neurotoxicity. MES23.5 cells were pretreated with obestatin (10(-13)-10(-6) mol/L) for 20 min prior to incubation with 200 μmol/L MPP(+) for 12 or 24 h, or treated with obestatin alone (10(-13) to 10(-6) mol/L) for 0, 6, 12, and 24 h. The methyl thiazolyl tetrazolium (MTT) assay was used to measure cell viability. Flow cytometry was used to measure the caspase-3 activity and the mitochondrial transmembrane potential. Proliferating cell nuclear antigen (PCNA) protein levels were determined by Western blotting. Obestatin (10(-13) to 10(-7) mol/L) pretreatment blocked or even reversed the MPP(+)-induced reduction of viability in MES23.5 cells, but had no effect on MPP(+)-induced mitochondrial transmembrane potential collapse and caspase-3 activation. When applied alone, obestatin increased viability. Elevated PCNA levels occurred with 10(-7), 10(-9), 10(-11) and 10(-13) mol/L obestatin treatment for 12 h. The results suggest that the protective effects of obestatin against MPP(+) in MES23.5 cells are due to its proliferation-promoting rather than anti-apoptotic effects.

  4. Mes chers collègues, les moines, ou le partage de l’ignorance

    Directory of Open Access Journals (Sweden)

    Laurence Caillet

    2009-03-01

    Full Text Available Mes chers collègues, les moines, ou le partage de l’ignorance. Aucun statut ne m’a autant étonnée que celui de collègue qui me fut conféré par les moines du Grand monastère de l’Est, à Nara. Après avoir testé mes connaissances en matière de rituel, ces moines fort savants manifestèrent en effet, avec ostentation, leur ignorance. Pointant pour moi des détails liturgiques qu’ils tenaient pour incompréhensibles, ils prirent un plaisir évident à bavarder histoire et théologie, comme si je pouvais apporter quoi que ce soit. Cette mise en scène du caractère incompréhensible du rituel soulignait le caractère ineffable de cérémonies jadis accomplies au ciel par des entités supérieures. Je fournissais prétexte à décrire la vanité de l’érudition face à l’accomplissement des mystères et aussi l’importance de cette érudition pour renouer avec un sens originel irrémédiablement inconnaissable.My dear colleagues the monks, or the sharing of ignorance. No status has ever surprised me as much as that of “colleague” conferred on me by the monks of the Great Eastern Monastery of Nara. After testing my knowledge of ritual, these very learned monks made great show of their ignorance. Drawing my attention to liturgical details that they held to be incomprehensible, they took obvious pleasure in chatting about history and theology, as if I were capable of making the slightest contribution. This staging of the impenetrable nature of the ritual highlighted the ineffable character of the ceremonies performed in heaven long ago by superior beings. I provided a convenient pretext for describing the vanity of erudition in the face of the accomplishment of the mysteries, and also the importance of this erudition for renewing an original, irreparably unknowable meaning.

  5. Le transport aérien en Colombie. Historique et problèmes actuels

    Directory of Open Access Journals (Sweden)

    1993-01-01

    Full Text Available Le transport aérien colombien est à un tournant de son histoire. En effet, après une longue période de protectionnisme, l’État a décidé d’appliquer une politique libérale qui doit profondément modifier le ciel colombien. Cet article présente un historique de l’aviation nationale avant de s’attacher aux problèmes actuels. EL TRANSPORTE AÉREO EN COLOMBIA - HISTORIAL Y PROBLEMAS ACTUALES. El transporte aéreo se encuentra en un momento crucial de su historia. Después de un largo tiempo de proteccionismo, el Estado decidió autorizar una política liberal que debe modificar totalmente el cielo colombiano. Este artículo presenta una historia de la aviación nacional y analiza los problemas actuales. AERIAL TRANSPORT IN COLOMBIA - HISTORIC AND CURRENT PROBLEMS. Aerial transport in Colombia has entered a key period. After decades of protectionism, the State has initiated a liberal policy that will bring about a revolution in the Colombian skies. This article presents the history of national aviation and analyses its current problems.

  6. PROPUESTA DE UN MODELO DE GESTION HUMANA Y CULTURA ORGANIZACIONAL PARA PyMES INNOVADORAS

    Directory of Open Access Journals (Sweden)

    RAFAEL IGNACIO PEREZ URIBE

    2003-07-01

    Full Text Available La gestión humana y cultura organizacional son conceptos inseparables en cualquier tipo de organización y han sido tratados extensamente en el ámbito académico general, pero no en el caso de las PyMES. Las condiciones sociales, económicas y culturales de este nuevo siglo hacen imprescindible que las empresas medianas y pequeñas sean altamente creativas, innovadoras, se adapten ágilmente a los cambios, sobrevivan y crezcan, y para lograrlo necesariamente deben contar con una fuerza laboral comprometida, capacitada y motivada, que trabaje en busca del logro de la misión de la organización, pero que a la vez sienta que están logrando satisfacer sus deseos, expectativas y necesidades más profundas. En este artículo se revisan algunos planteamientos que profundizan sobre gestión humana y cultura organizacional de manera integral y que sirven de guía básica temática para el diseño de un modelo de gestión humana.

  7. Investigation of He–W interactions using DiMES on DIII-D

    International Nuclear Information System (INIS)

    Doerner, R P; Rudakov, D L; Chrobak, C P; Pace, D C; Briesemeister, A R; Corr, C; Kluth, P; Thompson, M; De Temmerman, G; Pitts, R A; Lasnier, C J; McLean, A G; Schmitz, O; Winters, V

    2016-01-01

    Tungsten button samples were exposed to He ELMing H-mode plasma in DIII-D using 2.3 MW of electron cyclotron heating power. Prior to the exposures, the W buttons were exposed to either He, or D, plasma in PISCES-A for 2000 s at surface temperatures of 225–850 °C to create a variety of surfaces (surface blisters, subsurface nano-bubbles, fuzz). Erosion was spectroscopically measured from each DiMES sample, with the exception of the fuzzy W samples which showed almost undetectable WI emission. Post-exposure grazing incidence small angle x-ray scattering surface analysis showed the formation of 1.5 nm diameter He bubbles in the surface of W buttons after only a single DIII-D (3 s, ∼150 ELMs) discharge, similar to the bubble layer resulting from the 2000 s. exposure in PISCES-A. No surface roughening, or damage, was detected on the samples after approximately 600 ELMs with energy density between 0.04–0.1 MJ m −2 . (paper)

  8. La gestion des ressources renouvelables: vers un gestion patrimoniale des écosystèmes

    Directory of Open Access Journals (Sweden)

    2004-01-01

    Full Text Available Cet article analyse et critique les approches de gestion biologique et économique des ressources naturelles traditionnellement appliquées. Sont présentées des alternatives à ces modèles, basées sur l’institutionnalisme et l’approche de gestion patrimoniale. Ce cadre théorique devrait favoriser la mise en œuvre d’une gestion viable des écosystèmes. Este artículo analiza y critica los modelos de gestión biológica y económica de recursos naturales tradicionalmente aplicados. Se presentan alternativas a estos modelos, basados en el institucionalismo y el manejo patrimonial, los que constituirían un marco teórico que viabilice la gestión de recursos naturales en los ecosistemas. This paper analyses and criticizes traditional approaches to biological and economic management of natural resources. Alternative approaches are presented based on institutionalism and heritage management these constitute a theoretical framework for the implementation of appropriate natural resource use in ecosystems.

  9. PyMes: las grandes organizaciones del mañana, ¿ISO la solucion del hoy?

    Directory of Open Access Journals (Sweden)

    Placeres, A.

    2006-07-01

    Full Text Available In this article, we demonstrate the relevance for the companies in terms of maintaining a high competitive ability with their peers, and taking into account the requirement of their clients, trying to procure better tools based upon their financial capabilities, with particular emphasis on PyMes (small and medium-sized companies. This arises from the fact that in order to grow for a company; it should take into account the commitment and variation in this regard, in their clients. In this article the growth options of PyMes based upon the search for standardization, certification and the implementation of their processes with the aid of standard norms such as ISO 9000 are highlighted. This process should be on the basis of the level of the commitment of all their employees, as in the absence of such commitments, such processes will be viewed as unnecessary costs which will not help the growth of the company.

  10. CONSIDERACIONES PRÁCTICAS PARA LA GESTIÓN DEL CAPITAL DE TRABAJO EN LAS PyMES INNOVADORAS

    Directory of Open Access Journals (Sweden)

    Hugo Alfonso Vargas Arévalo

    2003-07-01

    Full Text Available Las PyMES se presentan en la actualidad como las principales empresas generadoras de empleo en Colombia. Son además un segmento empresarial de gran importancia por su contribución al PIB. Sin embargo, muchas de ellas adolecen de la gestión necesaria para convertirlas en unidades innovadoras, autosostenibles y en crecimiento. Hay, por ejemplo, una gran dificultad para obtener financiación, para vender, para generar estrategias de asociación, para gestionar recursos humanos. Este artículo se propone unificar algunos conceptos concernientes a la administración de capital de trabajo de las PyMES. Se hace énfasis en la rentabilidad y se aporta un conjunto de recursos estratégicos que puede contribuir a mejorar la gestión de este tipo de empresas en el contexto colombiano.

  11. CDMA à séquence directe appliqué aux systèmes de communications optiques

    OpenAIRE

    Lourdiane , Mounia

    2005-01-01

    Depuis quelques années, le besoin de systèmes de communications plus rapides et plus sures se fait sentir. Le partage entre utilisateurs de la très grande bande passante des fibres optiques nécessite des techniques d'accès adaptées. Afin de répondre à ces besoins, un certain nombre de techniques de multiplexage, dont le CDMA, ont été développées. Cette technique d'accès multiple est déjà largement utilisée dans les systèmes de communications radio-mobiles, que ce soit dans les normes américai...

  12. Influencia de la condición corporal de novillas Mambí al parto en el comportamiento reproductivo posparto Influence of the body condition of Mambí heifers at parturition on the postpartum reproductive performance

    Directory of Open Access Journals (Sweden)

    O López

    2007-06-01

    Full Text Available Se estudiaron 105 hembras Mambí en un sistema silvopastoril multiasociado, en la vaquería 066 de la Empresa Pecuaria Genética de Matanzas, con el objetivo de evaluar la influencia de la condición corporal de las novillas al parto en el comportamiento reproductivo posparto. El área de la unidad es de 47 ha, de las cuales 42 ha se dedicaron al pastoreo, divididas en 37 cuartones, y las 5 ha restantes se utilizaron para la producción de forraje de caña de azúcar. La carga fue de 1,7 vacas/ha. Se monitoreó la condición corporal (CC de las hembras al parto, se estimó el peso vivo de los animales, se calculó el balance alimentario para las vacas con nueve meses de gestación y se determinaron los indicadores reproductivos. Se encontró una ligera deficiencia de energía de un 5% solo en la época poco lluviosa, mientras que hubo exceso de proteína bruta, calcio y fósforo en ambas épocas del año. La CC de las vacas al parto estuvo por encima de 3 en todos los bimestres del año, con el mayor valor en julio-agosto (3,5 y el menor en mayo-junio (3,1; además, en las dos épocas la CC promedio de los animales fue similar (3,3. El peso de los terneros al nacer no presentó diferencias para los distintos rangos de CC y estuvo entre 36,5 y 38,7 kg/animal. Las vacas que parieron con 2,5 de CC presentaron un intervalo parto-primer servicio (PA total of 105 Mambí heifers were studied in a multi-associated silvopastoral system, in the dairy 066 of the Livestock Genetic Firm of Matanzas, with the objective of evaluating the influence of the body condition of the heifers at parturition on the postpartum reproductive performance. The area of the unit is 47 ha, of which 42 ha were dedicated to grazing, divided into 37 paddocks, and the other 5 were used for forage production from sugarcane. The stocking rate was 1,7 cows/ha. The body condition (BC of the heifers at parturition was monitored, the live weight of the animals was estimated, the feeding

  13. RELACIÓN DE LA VARIACIÓN DEL PESO VIVO Y DE LA CONDICIÓN CORPORAL CON LA DINÁMICA FOLICULAR POSPARTO EN VACAS CEBÚ PRIMERIZAS RELATIONSHIP OF LIVE WEIGHT AND CORPORAL CONDITION VARIATION WITH POSPARTUM FOLLICULAR DYNAMIC IN PRIMIPAROUS ZEBU COWS

    Directory of Open Access Journals (Sweden)

    Guillermo Henao Restrepo

    2008-06-01

    Full Text Available A partir del día del parto se seleccionaron 20 vacas Cebú primerizas amamantando para establecer la relación de los cambios de peso vivo y de condición corporal (CC con indicadores de la dinámica folicular hasta los 60 días posparto. El peso y la CC se midieron el día del parto y cada 15 días hasta los 60 días. Mediante ultrasonografía ovárica diaria se observaron las ondas foliculares, se contó el número de folículos con diámetro ≥3mm y se midió el diámetro de los folículos dominantes, se calculó la tasa de crecimiento folicular y el período interdominancia. Se aplicó una prueba de regresión lineal simple entre los cambios de peso y de CC a los 15, 30, 45 y 60 días posparto y los indicadores de la dinámica folicular. La disminución de peso de vacas Cebú primerizas en amamantamiento a través del posparto temprano se relacionó con un aumento (P≤0,05 del diámetro de los folículos dominantes y del número de folículos por onda y no se relacionó con la tasa de crecimiento folicular ni con el intervalo interdominancia. Los cambios en la CC no se relacionaron con ninguna de las variables indicadoras del desarrollo folicular.Twenty primiparous suckling Zebu cows were selected to establish the relationship between cow weight losses and body condition (CC changes with indicators of follicular dynamic until 60 days pospartum. Cow’s weight and CC were measured at calving and every 15 days up to 60 days. Follicular waves were followed using daily ovarian ultrasonography; the number of follicles with diameters ≥3 mm was counted, diameter of the dominant follicles was measured, follicular growth rate and the interdominance period were calculated. Data was analysed using a simple lineal regression model between cow weight and CC changes at 15, 30, 45 and 60 days pospartum and follicular dynamics indicators. The decrease in weight of primiparous suckling Zebu cows through the early pospartum, coincided with an increase

  14. La recherche-action participative appliquée aux systèmes de santé ...

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

    4 déc. 2014 ... Une nouvelle publication, intitulée Participatory Action Research in Health Systems: a methods reader, a été lancée à l'occasion du troisième Symposium mondial sur la recherche sur les systèmes de santé, qui s'est tenu au Cap, en Afrique du Sud, du 30 septembre au 3 octobre 2014. Ce guide des ...

  15. Comment utiliser les TIC pour s'attaquer aux problèmes de santé ...

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

    On appelle souvent cybersanté l'utilisation des technologies de l'information et de la communication (TIC) dans les systèmes de santé. L'importance accordée par le CRDI à la fois au renforcement des capacités et à l'influence exercée sur les politiques façonne depuis plus de dix ans les divers projets de recherche en ...

  16. Agent des systèmes d'information financière (h/f) | CRDI - Centre de ...

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

    Répondre directement aux demandes des utilisateurs formulées par courriel ou par téléphone ou par l'entremise du système de gestion des appels de dépannage. Communiquer au besoin avec les fournisseurs de logiciels et le personnel responsable des TI pour régler les problèmes rencontrés par les utilisateurs finaux ...

  17. Archivage électronique : spécifications relatives à la conception et à l'exploitation de systèmes informatiques en vue d'assurer la conservation et l'intégrité des documents stockés dans ces systèmes

    CERN Document Server

    Association Française de Normalisation. Paris

    2007-01-01

    Archivage électronique : spécifications relatives à la conception et à l'exploitation de systèmes informatiques en vue d'assurer la conservation et l'intégrité des documents stockés dans ces systèmes

  18. Problèmes linguistiques dans le système multilingues Linguistic Problems in Multilingual Systems

    Directory of Open Access Journals (Sweden)

    Moureau M.

    2006-11-01

    Full Text Available La communauté scientifique est internationale. L'industrie du pétrole est internationale. Des problèmes de communication, de langage, de langue y sont rencontrés chaque jour. C'est pourquoi, bien que tranchant assez vigoureusement sur les sujets habituels de la Revue de l'Institut Français du Pétrole, l'article de Magdeleine Moureau et Gerald Brace sur des problèmes de linguistique ne nous a pas paru trop étranger aux préoccupations de nos lecteurs pour leur être présenté. Cet article a pour but de traiter d'abord des impossibilités théoriques de la traduction, d'évoquer ensuite les modalités pratiques de sa réalisation quotidienne et de les appliquer à l'étude des problèmes inhérents à l'élaboration d'un langage documentaire multilinguisme. The aim of this paper is to discuss the theoretical impossibilities of translation, and then to describe the practical ways of actually translating, and to apply these ways to the task of studying problems inherent in elaborating a multilingual documentary language.

  19. Approches par points de vue pour l’ingénierie des Systèmes d’information

    Directory of Open Access Journals (Sweden)

    Brahim Lahna

    2009-07-01

    Full Text Available Les concepts de point de vue, de rôle, de perspective et de vue ont été largement étudiés et utilisés dans de nombreux travaux, dans divers domaines de l’informatique. On retrouve ces notions dans les Systèmes de Représentation de Connaissances par Objets, les Bases de Données Orientées Objets, les Méthodes de Conception, la Programmation Orientée Objets, etc. Chaque domaine lui donne sa propre définition et l’utilise dans son propre contexte. La notion de vue se développe indépendamment dans ces différentes disciplines. Bien que les propositions différent, elles sont confrontées aux mêmes problèmes : établir des relations entre vues et garantir la cohérence des vues entre elles ou vis-à-vis d'un modèle de référence. Nous présentons dans cet article des travaux relatifs aux notions de vues et points de vue dans différentes disciplines informatiques en insistant sur une proposition originale pour une nouvelle ingénierie des systèmes d’information orientée perspectives et composants multivues réutilisables.

  20. Guide du calcul en mécanique valider le comportement des systèmes techniques

    CERN Document Server

    Spenlé, Daniel

    2012-01-01

    Ce guide couvre l’essentiel des programmes de la Première STI2D aux sections de BTS pour les compétences liées à la mécanique. Pour prendre en compte les nouveautés pédagogiques, cette nouvelle édition évolue vers des systèmes « grand public » (robotique humanoïde, cycle trainer, power-ball…) ou des systèmes liés au développement durable(éolienne, scooter électrique…). Points forts - Un guide qui tient compte des orientations du nouveau programme de STI2D : - systèmes vibratoires ; - accéléromètres, effet gyroscopique ; - développement de l’énergétique. - Les disciplines Génie mécanique/Génie électrique sont décloisonnées: - introduction de dispositifs pluri-techniques ; - présentation d’interfaces liant la partie opérative à la partie commande ; - introduction de la conversion de l’énergie électrique en énergie mécanique et réciproquement, étude comportementale, point de fonctionnement, définition des grandeurs associées. - Le caractère expérimental, ...

  1. EFECTO DE FACTORES GENÉTICOS Y AMBIENTALES SOBRE EL RECUENTO DE CÉLULAS SOMÁTICAS EN GANADO LECHERO DE COSTA RICA

    Directory of Open Access Journals (Sweden)

    María Gabriela Mora

    2016-01-01

    Full Text Available El estudio evaluó el efecto de factores genéticos y ambientales sobre el Score de Célu - las Somáticas [SCS= log 2 (RCS/100 000+3] en ganado lechero de Costa Rica. Se analizaron 198 685 registros diarios, provenientes de 43 535 lactancias, 23 749 vacas lecheras, 237 hatos y 3 grupos raciales. Se utilizó un modelo animal mixto para evaluar efectos fijos de zona, hato dentro de zona, raza, número de lactancia, mes/ año de registro, periodo de lactancia y la cova - riable de producción de leche diaria; también para efectos aleatorios de ambiente permanente, hato×semental y vaca. Se calcularon la heredabi - lidad (h 2 y repetibilidad (r para el Recuento de Células Somáticas (SCS, así como los valores de cría (BLUP y confiabilidad para los individuos en la población. El promedio de SCS fue 3,30 (DE=1,87 todos los efectos fijos, significati - vos. Entre zonas, SCS varió desde 3,4 (bh-p a 3,7 (bmh-p. Para hatos dentro de zona, el SCS osciló entre 1,6 y 5,5. El SCS aumentó desde 2,7 en primera lactancia hasta 4,0 para lactancias ≥6. El SCS fue mayor en Enero (3,6 y menor en Abril (3,4. Se observó un patrón descendente no lineal en SCS desde el 2004 (4,3 hasta el 2015 (3,3 y un patrón no lineal de SCS a lo largo de la lactancia, que inició en 3,7 para disminuir hasta 3,1 al día 60 posparto, mientras que aumentó 3,9 al día 365. Se detectó una reducción de 0,051 en SCS por cada aumento de 1 kg en producción diaria de leche. Los valores de h 2 y r fueron 0,08 (DE=0,008 y 0,33 (DE=0,004, respectivamente. La confiabilidad de los BLUP en vacas y toros fue de 0,40 (DE=0,16 y 0,44 (DE=0,20, res- pectivamente. Estos resultados son útiles para un mejor control de SCS a nivel de hato, basado en el manejo preventivo de grupos más propensos, la optimización del descarte y la selección de sementales.

  2. The Orden de oraciones de mes arreo (Ferrara 1555 and a Bakasah composed by Abraham Usque

    Directory of Open Access Journals (Sweden)

    Herzfeld, Siegfried

    2002-06-01

    Full Text Available The British Library owns the only known copy of a prayer-book composed in 1555 by Abraham Usque: the Libro de Oraciones de mes arreo. Usque was well aware of the difficulties, encountered by many former Marranos still unfamiliar with Jewish liturgy, to follow the sometime long and complicated synagogue service. Abraham tried to provide a simplified version of the Siddur and abridged some part of it. In the Prologue he claimed to have presented the prayers in a plain and straight way (arreo: without the necessity of having to leaf through the book to find the continuation of the service. Abraham inserted in his Siddur a new prayer by which he asked the Lord to put an end to the sufferings of Israel, to raise up a scion of David and to restore His people to its ancient glory and dignity. The Author wanted to provide a reassuring answer to the anxieties and hopes of his generation. Likewise the Jews who left Spain in 1492, also the Portuguese Marranos who reached Ferrara towards the middle of the XVIcentury, continued to cherish the deeply rooted cultural values of their erstwhile homeland and considered their departure from Iberian Peninsula as a most catastrophic event. Abraham Usque asked the Lord to be content with the punishments already inflicted to His people and to grant His pardon to the sons of Israel who had completely abandoned every idolatrie practice.La British Library conserva la única copia conocida de un libro de oraciones compuesto en 1555 por Abraham Usque: el Libro de Oraciones de mes arreo. Usque era consciente de las dificultades que tenían muchos de los antiguos marranos, aún no familiarizados con la liturgia judía, en seguir el a veces largo y complicado servicio de la sinagoga. Abraham trató de proporcionar una versión simplificada del sidur, y lo abrevió en parte. En el Prólogo afirmó que había presentado las oraciones de un modo llano y directo (arreo, sin que hubiera necesidad de hojear el libro en busca de la

  3. Problèmes entomologiques en replantation des palmeraies et des cocoteraies

    Directory of Open Access Journals (Sweden)

    Mariau Dominique

    2000-03-01

    Full Text Available C’est aux alentours de la vingt-cinquième année que l’on envisage de replanter une palmeraie. C’est en effet vers cet âge que commencent à se poser des problèmes de récolte en raison de la taille des palmiers. En un quart de siècle, l’amélioration génétique aura suffisamment fait de progrès pour escompter un gain de production de l’ordre de 20%. Enfin, dans certaines situations, plusieurs maladies ont pu affecter les vieilles palmeraies. Avec de 15 à 25% d’arbres manquants, principalement lorsque ceux-ci se présentent sous la forme de taches, une diminution de la production se fait nettement sentir. Cela peut, par exemple, être le cas avec les maladies de la fusariose en Afrique de l’Ouest, lorsque la palmeraie n’a pas été plantée avec du matériel végétal tolérant, ou du ganoderma en Malaisie. Le renouvellement des cocoteraies se fait avec un espace de temps beaucoup plus long. En effet, la récolte des noix peut se faire au sol et la hauteur des cocotiers n’est donc pas un facteur limitant. Par ailleurs, la majorité des cocoteraies étant sous la forme de petites plantations villageoises, les agriculteurs rechignent toujours à abattre leurs cocotiers, même si des semences potentiellement plus productives leurs sont proposées. Ce sont les raisons pour lesquelles les cocoteraies de 50 ans et plus représentent la règle. L’abattage d’une plantation de palmiers à huile ou de cocotiers constitue naturellement un changement brutal de l’environnement, ce qui a des conséquences importantes notamment sur l’entomofaune, parmi laquelle des ravageurs majeurs ainsi que leurs ennemis naturels.

  4. Microbiota mesófila aeróbia contaminante do leite UHT

    Directory of Open Access Journals (Sweden)

    Juliana Ramos Pereira

    2013-10-01

    Full Text Available A produção nacional de leite tratado por ultra-alta temperatura (UHT em 2011 foi de 5,81 bilhões de litros, representando assim 78% do leite fluido consumido no Brasil. O presente trabalho teve como objetivo estudar a contaminação por aeróbios mesófilos (AM em leite UHT, verificando o atendimento a padrões microbiológicos legais, classificando os grupos encontrados segundo suas características morfo-tintoriais e discutindo a metodologia de enumeração determinada pela Instrução Normativa 62 do Ministério da Agricultura, Pecuária e Abastecimento (MAPA. Das 60 amostras estudadas, 23 (38,3% apresentaram resultados acima do padrão de 100 UFC/mL estabelecido pela IN 370 do MAPA para micro-organismos AM. Quando o Bacillus sporothermodurans foi considerado, as contagens máximas aumentaram 71,2% nas amostras integrais e 31,0% nas amostras desnatadas. Considerando-se as maiores diluições semeadas em que se obteve crescimento, foi possível o isolamento de 462 colônias de AM que, na coloração de Gram representaram 64,3% de bactérias Gram positivas e 9,5%, de bactérias Gram negativas. Fungos filamentosos e leveduras somaram 26,2%. Entre os Gram positivos predominaram cocos, B. sporothermodurans e, outros bacilos. Entre os Gram negativos predominaram os cocobacilos e os bacilos. Como as amostras representam lotes de leite UHT de importantes marcas do sul do país, os resultados demonstram que 11 das 15 marcas estudadas apresentaram excesso de AM, quando comparadas com o parâmetro legal. Os grupos de microrganismos presentes, sobretudo os Gram negativos que são sensíveis à temperatura, indicam possíveis falhas no processamento e/ou contaminação pós-processamento.

  5. BUSY: Una plataforma para la gestión de reservas por hora en PyMes

    OpenAIRE

    González Cabrero, Juan Carlos

    2016-01-01

    El objetivo de este proyecto consiste en el desarrollo de una plataforma software enfocada a pequeñas y medianas empresas (PyMEs), para llevar a cabo la organización de servicios ofrecidos a los clientes. buSy es una herramienta cómoda y sencilla para la gestión de reservas y control de horarios con un ámbito de negocio generalista, ya que su enfoque global permite la utilización de esta aplicación a una amplia gama de categorías de empresa. Se trata de un proyecto web desar...

  6. Comment les aires protégées structurent les écosystèmes des ...

    African Journals Online (AJOL)

    1 mars 2009 ... Cette étude menée a pour but de montrer l'influence des aires protégées sur la structuration des écosystèmes périphériques. Pour cela, une étude diachronique par images satellitaires Landsat de 1985 à 2013 a été faite et une collecte de données de terrain a été réalisée dans les villages autour du Parc ...

  7. PyMEs : Guía de comunicación para exportación

    OpenAIRE

    Barandiain, Dolores; Feiteler, Daniela Elizabeth; Longarzo, María Florencia

    2007-01-01

    Esta guía de comunicación está dirigida al empresario PyME que pretende insertarse en la actividad exportadora o que aspira a mejorar dicho proceso. Este material tiene como objetivo aportar herramientas útiles, prácticas y claras vinculadas a la comunicación, entendiendo el concepto como un valor agregado en la gestión de las PyMEs que exportan. Cualquier acción que la empresa realice va a construir un sentido en el destinatario. A partir de aquí, se plantea la Guía de Comunicación para Expo...

  8. Sistemas de Información Gerencial en los procesos de negocio de las PyMEs de Jujuy

    OpenAIRE

    Castillo, César A.; Herrera Cognetta, Analía; Rico, Lía G.; Salva, Sergio; Sarmiento, Julián; Tejerina, Mario; Villarrubia, Laura R.

    2013-01-01

    El equipo de investigación ha planteado como fundamento para estudio e investigación, la siguiente hipótesis: “la implementación de Sistemas de Información Gerencial en las Pequeñas y Medianas Empresas de la provincia de Jujuy, aportará grandes ventajas para su eficiente administración y crecimiento”. A fin de refutar o confirmar ésta, se ha iniciado el correspondiente relevamiento en las PyMEs de la provincia, en lo concerniente a su situación actual, analizando además, sus necesidades de in...

  9. La science de l’amour dans les poèmes et dans les contes soufis

    Directory of Open Access Journals (Sweden)

    Dr Natália Maria Lopes Nunes

    2011-09-01

    Full Text Available Cet article est le résultat introductoire du travail de recherche sur l’amour divin à partir de deux grands maîtres soufis, Ibn Arabi et Djalal ad Din Rumi, qui ont développé dans leurs poèmes et contes ce qu’on peut appeler la Science de l’Amour. Rumi, considéré comme l'un des maîtres de la "Science de l'Amour", l’a répandue à travers des poèmes mystiques et de la danse des derviches. Ibn Arabi, connu comme le "maître maximum" du Soufisme a saisi la sagesse sur l'amour dans le Traité d’Amour. Les deux amoureux de Dieu, ont exprimé leur sagesse sur l'Amour et la Beauté du Bien-Aimé, l’extase de l'âme dans l'union entre l'homme et Dieu.

  10. Évaluation des services rendus par les écosystèmes  en France

    Directory of Open Access Journals (Sweden)

    Philippe Blancher

    2011-12-01

    Full Text Available Cet article rend compte de la méthode d’évaluation des services écosystémiques appliquée au territoire français dans le cadre d’une approche exploratoire. S’inscrivant dans le sillage du ‘‘Millennium Ecosystem Assessment’’ (MA lancé par l’ONU, l’application de la démarche du MA à un territoire donné a conduit à l’élaboration de nouveaux outils d’analyse et de mesure des interactions entre nature et activités humaines à plusieurs échelles territoriales, à travers une projection cartographique des écosystèmes sur l’ensemble du territoire, un recensement des services rendus par les écosystèmes en France et une méthodologie pour leur quantification.This article introduces a method for the assessment of ecosystem services on the French territory. Following the U.N.-initiated Millennium Ecosystem Assessment framework, the implementation of an ecosystem assessment on a specific territory led to the conception of new tools for the analysis and the measurement of interactions between nature and human activities at different territorial scales, through the mapping of ecosystems, an identification of ecosystem services on the French territory and a methodology for their quantification.

  11. Urinary incontinence in the puerperium and its impact on the health-related quality of life La incontinencia urinaria en periodo de posparto y su impacto en la calidad de vida relacionada a salud A incontinência urinária no puerpério e o impacto na qualidade de vida relacionada à saúde

    Directory of Open Access Journals (Sweden)

    Lígia da Silva Leroy

    2012-04-01

    Full Text Available This case-control study evaluated whether UI in the puerperium compromises the health-related quality of life (HRQoL and if so, in which aspects. The study included 344 women (77 case group and 267 control group up to 90 days postpartum, who were attended the Obstetrics Outpatient Clinic of a public teaching hospital, for the postpartum follow up consultation. A socio-demographic and clinical data questionnaire formulated and validated for the study, the International Consultation on Incontinence Questionnaire - Short-Form (ICIQ-SF, the King's Health Questionnaire (KHQ and the Medical Outcomes Study 36 - Item Short Form Health Survey (SF-36, were applied. The mean score of the ICIQ-SF was 13.9 (SD: 3.7. The case group presented high mean scores in the domains Impact of the Incontinence, Emotions, Daily Activity Limitations and Physical Limitations, of the KHQ. The groups differed significantly in the domains Physical Aspects, Pain, General Health Status, Vitality, Social Aspects and Mental Health of the SF-36. It is concluded that UI significantly affects the physical and mental health of puerperae.Estudio caso-controle ha evaluado se la incontinencia urinaria posparto afecta la calidad de vida relacionada a salud y en que aspectos. Serán incluidas 344 mujeres (77 casos y 267 controles hasta 90 días posparto que asistieron a la Clínica de Obstetricia de un hospital de público y de enseñanza. Fue aplicado cuestionario formulado y validado, el "International Consultation on Incontinence Questionnaire - Short -Form" (ICIQ-SF, "King´s Health Questionnaire" (KHQ y "Medical Outcomes Study 36 - Item Short Form Health Survey" (SF-36. La media del ICIQ-SF fue 13,9 (DP: 3,7. Casos tenían altos puntajes en los dominios del Impacto de la Incontinencia, Emociones, Limitaciones de las Actividades Diarias y Limitaciones Físicas del KHQ. Los grupos presentaron diferencias significativamente en los dominios Aspectos Físicos, Dolor, Estado General de la

  12. Alteraciones en el vínculo materno- infantil: prevalencia, factores de riesgo, criterios diagnósticos y estrategias de evaluación

    Directory of Open Access Journals (Sweden)

    Bruma Palacios-Hernández

    2016-06-01

    Full Text Available La interacción temprana entre una madre y su bebé durante el primer año de posparto, se centra en la respuesta emocional materna que determina el vínculo materno-infantil, considerado éste un importante mediador en el desarrollo psicosocial del infante. Alteraciones en esta vinculación temprana se asocian a importantes consecuencias en el infante a nivel cognitivo, social, de salud mental y con riesgo de maltrato, abuso infantil y hasta infanticidio. Los factores de riesgo para una alteración en el vínculo materno-infantil incluyen factores de la madre, del bebé, del embarazo, parto y posparto y del ambiente social. El estudio de los aspectos psicosociales de la relación temprana entre una madre y su infante, ha sido de principal interés en países desarrollados; sin embargo, en Latinoamérica la investigación es aún muy escasa. En la presente revisión se exploran las características del vínculo materno-infantil, sus factores de riesgo y consecuencias negativas más asociadas, así como una identificación de las estrategias de evaluación más usadas en diferentes países. La detección temprana de una problemática del vínculo materno-infantil es una estrategia fundamental para diseñar intervenciones de salud específicas y pertinentes que disminuyan las consecuencias adversas y promuevan el bienestar de la diada madre-bebé y su ámbito familiar.

  13. Depressão pós-parto em puérperas: conhecendo interações entre mãe, filho e família Depresión posparto en puérperas: conociendo interacciones entre madre, hijo y familia Postpartum depression in puerperal women: knowing the interactions among mother, son and family

    Directory of Open Access Journals (Sweden)

    Francisca Cláudia Sousa da Silva

    2010-06-01

    Full Text Available OBJETIVO: Conhecer a interação de puérperas, que apresentam depressão pós-parto, com seus filhos e compreender a percepção de familiares sobre a doença e cuidados maternos prestados por essas puérperas. MÉTODOS: Estudo qualitativo de caráter exploratório que teve como sujeitos do estudo quatro puérperas com depressão pós-parto, acompanhadas em um Centro de Atenção Psicossocial do município de Quixadá - CE e quatro familiares. Foram realizadas visitas domiciliárias para a execução de entrevistas em profundidade. Os dados foram analisados conforme a técnica de análise de conteúdo proposta por Morse e Field. RESULTADOS: As principais alterações emocionais relatadas foram o choro fácil e nervosismo. As puérperas sentiam-se frustradas e/ou inseguras quanto ao exercício da maternidade. Como agravante foi observado que familiares desconheciam o problema da depressão pós-parto. CONCLUSÃO: O cuidado de enfermagem nessa situação deve começar no pré-natal com avaliação da auto-estima, da rede de suporte social e da satisfação das futuras mães.OBJETIVO: Conocer la interacción de puérperas, que presentan depresión posparto, con sus hijos y, comprender la percepción de familiares sobre la enfermedad y cuidados maternos prestados por esas puérperas. MÉTODOS: Estudio cualitativo de carácter exploratorio que tuvo como sujetos de estudio cuatro puérperas con depresión posparto, acompañadas en un Centro de Atención Psicosocial del municipio de Quixadá (estado de Ceará, y cuatro familiares. Fueron realizadas visitas domiciliarias para la ejecución de entrevistas en profundidad. Los datos fueron analizados conforme la técnica de análisis de contenido propuesta por Morse e Field. RESULTADOS: Las principales alteraciones emocionales relatadas fueron el llanto fácil y el nervosismo. Las puérperas se sentían frustradas y/o inseguras en lo referente al ejercicio de la maternidad. Como agravante fue observado

  14. Propuesta de medición de la competitividad de las PyMES radicadas en la provincia de Córdoba. Aplicación práctica a cámaras empresarias”

    OpenAIRE

    Marín, Laura

    2015-01-01

    I. Resumen - II. Marco Teórico - III. Metodología - IV. Objetivos del trabajo - V. Límites o alcance del trabajo - VI. Organización del trabajo - VII. Introducción - Capítulo 1 - 1. Revisión de la literatura. Conceptualización - 1.1 Evolución histórica del concepto de competitividad - 1.2 Factores que afectan a la competitividad - 1.3 La competitividad empresarial con un enfoque sistemático - 1.4 Responsabilidad social y competitividad empresaria - 1.5 La importancia de las PyMES - 1.5.1 Los ...

  15. Electromagnétisme fondements et applications : avec 300 exercices et problèmes résolus

    CERN Document Server

    Pérez, José-Philippe; Fleckinger, Robert

    1997-01-01

    Cet ouvrage fait partie de ceux qui l'on acquiert dès le début de ses études et que l'on conserve comme ouvrage de référence. Il rassemble en un seul volume les notions fondamentales de l'électromagnétisme et des diverses applications en physique. Il est construit en 30 chapîtres très structurés et illustrés de nombreux exercices et problèmes résolus. Le public Etudiants des DEUG Sciences (SM, MIAS, ST et SV) Etudiants des classes préparatoires (MP, PC, PSI) Etudiants des licences de physique Candidats aux concours d'enseignement.

  16. 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.

  17. Thermodynamique statistique résumés de cours et problèmes résolus

    CERN Document Server

    Chahine, C

    1976-01-01

    Le présent ouvrage est conçu pour une initiation à la thermodynamique statistique en présentant un très grand nombre d'applications sous forme de problèmes résolus, et en donnant des résumés de cours constitués de l'essentiel des résultats théoriques nécessaires pour traiter les applications chaque fois qu'est abordé un nouveau domaine. Partant d'un niveau élémentaire et rédigé de façon très progressive, ce livre qui se suffit à lui-même, permet de saisir l'aspect physique des phénomènes, et de faire le lien entre les statistiques élémentaires et les statistiques de Gibbs. Le lecteur pourra, soit résoudre effectivement les problèmes sans avoir recours à la solution et tirer alors tout le bénéfice d'une recherche personnelle, soit lire l'ensemble de l'énoncé et de la solution qui sont très détaillés, et forment ainsi un exposé très clair. L'ouvrage, qui développe principalement l'aspect physique des phénomènes, intéresse les étudiants en physique dès la 1ère année ...

  18. PSA de radio Mes de Concientización sobre las ETS PSA de radio (30 seg) (STD Awareness Month PSA (:30))

    Centers for Disease Control (CDC) Podcasts

    Abril es el Mes Nacional de Concientización sobre las Enfermedades de Transmisión Sexual (ETS). Las ETS pueden afectar a cualquier persona. Muchas ETS no tienen síntomas, por lo que es importante hacerse pruebas de detección.

  19. Impact des changements climatiques sur les écosystèmes alpins : comment les mettre en évidence et les prévoir ?

    Directory of Open Access Journals (Sweden)

    Nigel G. Yoccoz

    2011-01-01

    Full Text Available Les écosystèmes alpins vont être grandement influencés par les changements climatiques à venir, mais d’autres facteurs, tels que l’utilisation des terres ou les espèces invasives, pourront aussi jouer un rôle important. Le climat peut influencer les écosystèmes à différents niveaux, et nous en décrivons certains, en mettant l’accent sur les méthodes utilisées et les données disponibles. Le climat peut d’abord modifier la phénologie des espèces, comme la date de floraison des plantes ou la date d’éclosion des insectes. Il peut ensuite affecter directement la démographie des espèces (survie, reproduction, dispersion et donc à terme leur répartition. Il peut enfin agir sur les interactions entre espèces – le couvert neigeux par exemple modifie le succès de certains prédateurs. Une caractéristique des écosystèmes alpins est la présence d’un manteau neigeux important et pourtant l’influence de la neige reste relativement mal connue, en particulier pour des raisons logistiques. Même si nous avons fait des progrès importants dans le développement de modèles prédictifs, surtout pour ce qui est de la répartition des plantes alpines, il reste à mettre en place des réseaux d’observations et d’expériences permettant de mieux tenir compte de la variabilité des écosystèmes alpins et des interactions avec le climat.Alpine ecosystems will be greatly impacted by climatic change, but other factors, such as land use and invasive species, are likely to play an important role too. Climate can influence ecosystems at several levels. We describe some of them, stressing methodological approaches and available data. Climate can modify species phenology, such as flowering date of plants and hatching date in insects. It can also change directly population demography (survival, reproduction, dispersal, and therefore species distribution. Finally it can effect interactions among species –snow cover for example

  20. Attitudes des éleveurs et sensibilité des systèmes d'élevage face aux sécheresses dans les Alpes françaises

    Directory of Open Access Journals (Sweden)

    Laurent Dobremez

    2011-01-01

    Full Text Available Les systèmes d'élevage des Alpes françaises sont fortement exposés au changement climatique annoncé et la plupart subissent déjà des épisodes de sécheresse depuis le début des années 2000. Face à ces aléas, les éleveurs ont mis en œuvre un certain nombre de leviers et envisagent d'en activer d'autres à l'avenir. Des enquêtes en exploitation ont permis d’identifier ces leviers. Leur analyse permet de caractériser les attitudes des éleveurs face aux sécheresses et d’évaluer l’évolution de la sensibilité de leurs systèmes d’élevage. A l'exception des exploitations disposant de surfaces irriguées importantes, toutes les exploitations cherchent d'abord à contourner l’aléa. Elles ont recours aux achats de fourrage pour compenser la baisse des récoltes destinées aux stocks hivernaux, mais à des degrés divers selon la durée de l’hivernage. Pour les périodes de pâturage, les éleveurs de haute montagne et les systèmes laitiers des Alpes du nord jouent avant tout sur un système résistant grâce à l’agrandissement et au surdimensionnement des pâtures par rapport aux besoins du troupeau. Les exploitations pastorales des Alpes du sud misent aussi sur une diversité de surfaces et une certaine latitude dans la conduite technique pour s'adapter aux conditions de l'année. Une succession répétée d’années sèches pourrait se traduire par des ruptures plus radicales dans les systèmes d’élevage. Il faut aussi garder à l’esprit que le changement climatique n'est qu'un des facteurs influençant les modes de transformation des exploitations.Livestock farming systems in the French Alps are particularly exposed to the predicted climate change and most of them have already experienced periods of drought since the beginning of the 2000s. Faced with this risk, livestock farmers have put in place a certain number of measures and envisage introducing others in the future. For the present study, surveys were

  1. Synthesis and spectroscopic and structural characterization of the monomeric diborylphosphine and diphosphinoborane compounds PhP(BMes2)2 and MesB(PPh2)2 (Mes = 2,4,6-Me3C6H2)

    International Nuclear Information System (INIS)

    Bartlett, R.A.; Dias, H.V.R.; Power, P.P.

    1988-01-01

    The synthesis and spectroscopic and first x-ray structural characterization of a diborylphosphine, PhP(BMes 2 ) 2 (1), and a diphosphinoborane, MesB(PPh 2 ) 2 (2), are described. The structure of 1 has a planar core that involves the phosphorus and two boron atoms and also the five substituent carbons. In addition, the B-P bond lengths are shortened, which suggests a close structural analogy between 1 and the allyl cation. In the case of 2, although the boron remains planar, both phosphorus centers are pyramidal with slightly longer B-P bonds than in 1. Both 1 and 2 are the first examples of their respective classes of compound to be well characterized. Crystal data with Mo Kα radiation (λ = 0.71069 /angstrom/) at 130 K are as follows. 1: a = 14.302 (4) /angstrom/, b = 15.701 (3) /angstrom/, c = 16.601 (6) /angstrom/, β = 109.61 (2)/degrees/; monoclinic, space group C2/c, Z = 4, R = 0.059. 2: a = 7.815 (2) /angstrom/, b = 8.723 (2) /angstrom/, c = 40.147 (10) /angstrom/, β = 94.90 (2)/degrees/; monoclinic, space group P2 1 /n, Z = 4, R = 0.041. A listing of available 11 B and 31 P NMR data on compounds involving triply connected boron and phosphorus centers is also provided and discussed in the context of the data for 1 and 2. 25 references, 2 figures, 4 tables

  2. Les pensions dans les pays de l'OCDE 2009 panorama des systèmes de retraite

    CERN Document Server

    Organisation for Economic Cooperation and Development. Paris

    2009-01-01

    Les politiques menées en matière de pensions et de retraite ont connu des évolutions considérables au cours des dernières années, les pouvoirs publics s’efforçant de concilier deux objectifs : assurer des revenus suffisants aux retraités et garantir la viabilité financière à long terme des systèmes de retraite face au vieillissement de la population. Panorama des Pensions 2009 propose un cadre de référence cohérent permettant de comparer les politiques adoptées dans ce domaine par les différents pays de l’OCDE, ainsi qu’un ensemble de données fiables. Cette troisième édition renferme des informations actualisées sur les principales caractéristiques des pensions versées au sein des pays de l’OCDE et contient des projections relatives aux revenus que percevront demain les salariés d’aujourd’hui. Elle offre également une gamme élargie d’indicateurs, parmi lesquels figurent des données chiffrées concernant les actifs, les performances des investissements, l’ampleur des ...

  3. DiMES Studies of Temperature Dependence of Carbon Erosion and Re-Deposition in the DIII-D Divertor

    Energy Technology Data Exchange (ETDEWEB)

    Rudakov, D L; Jacob, W; Krieger, K; Litnovsky, A; Philipps, V; West, W P; Wong, C C; Allen, S L; Bastasz, R J; Boedo, J A; Brooks, N H; Boivin, R L; De Temmerman, G; Fenstermacher, M E; Groth, M; Hollmann, E M; Lasnier, C J; McLean, A G; Moyer, R A; Stangeby, P C; Wampler, W R; Watkins, J G; Wienhold, P; Whaley, J

    2007-03-15

    A strong effect of a moderately elevated surface temperature on net carbon deposition and deuterium co-deposition in the DIII-D divertor was observed under detached conditions. A DiMES sample with a gap 2 mm wide and 18 mm deep was exposed to lower-single-null (LSN) L-mode plasmas first at room temperature, and then at 200 C. At the elevated temperature, deuterium co-deposition in the gap was reduced by an order of magnitude. At the plasma-facing surface of the heated sample net carbon erosion was measured at a rate of 3 nm/s, whereas without heating net deposition is normally observed under detachment. In a related experiment three sets of molybdenum mirrors recessed 2 cm below the divertor floor were exposed to identical LSN ELMy H-mode discharges. The first set of mirrors exposed at ambient temperature exhibited net carbon deposition at a rate of up to 3.7 nm/s and suffered a significant drop in reflectivity. In contrast, two other mirror sets exposed at elevated temperatures between 90 C and 175 C exhibited practically no carbon deposition.

  4. Relativité fondements et applications : avec 150 exercices et problèmes résolus

    CERN Document Server

    Pérez, José-Philippe

    1999-01-01

    Cet ouvrage rassemble, en un seul volume, les fondements de la relativité auxquels ont été ajoutés quelques compléments, de nombreux exemples d'illustration et 150 exercices et problèmes résolus. Il est structuré en dix chapitres, dont les trois derniers (physique nucléaire, électromagnétisme et relativité, gravitation et relativité) peuvent être considérés comme des prolongements culturels. Il s'adresse aux étudiants des trois premières années d'études supérieures : DEUG, ENSI-DEUG et licences. En effet leurs connaissances, que ce soit en mathématiques, en mécanique, en électromagnétisme ou en optique, suffisent largement pour comprendre les fondements et les applications physiques de cette théorie du XXe siècle. En raison de son découpage en leçons structurées, quasi autonomes, et de l'accent mis sur le développement des idées, ce livre devrait également intéresser les candidats aux concours d'enseignement (CAPES et agrégation).

  5. Mécanique fondements et applications : avec 300 exercices et problèmes résolus

    CERN Document Server

    Pérez, José-Philippe

    1997-01-01

    Cet ouvrage fait partie de ceux que l'on acquiert dès le début de ses études et que l'on conserve comme ouvrage de référence. Ce cours rassemble en un seul volume les notions fondamentales de la mécanique. Il est construit en 32 chapitres volontairement assez courts mais très pédagogiques, illustrés d'environ 300 exercices et problèmes corrigés. La première partie concerne la mécanique du point matériel soumis à des forces. La seconde présente la mécanique des N points matériels en interaction. La troisième, plus technique, développe la mécanique générale des solides indéformables. Enfin la quatrième porte sur les bases de la mécanique des fluides.

  6. Psiholoģiskā trillera iezīmes filmās "Would you rather" un "The forest"

    OpenAIRE

    Bite, Linda

    2016-01-01

    Bakalaura darba tēma ir psiholoģiskā trillera iezīmes filmās ‘’Ko tu labāk’’ un ‘Mežs’’. Darbs sastāv no teorētiskās daļas, kur tika apskatīta teorija par filmām, šausmu kino, šausmu apakš-žanriem, naratīvu un psihoanalīzi. Darbā tika aprakstīta arī metodoloģija ar kuras palīdzību tika veikts pētījums, kas ir semiotiskā analīze un fokusgrupas pētījums. Darbā tika noteikta pētījuma problēma- kas ir tie elementi, kas ļauj atšķirt šausmu filmu no psiholoģiskā trillera. Pētījuma mērķis ir noskai...

  7. PyMEs y crecimiento económico : Estado de situación de Argentina y su comparación con Brasil y Canadá

    OpenAIRE

    De Simone Martin, Mara

    2017-01-01

    Descripción del estado de situación en Argentina, Brasil y Canadá respecto de la contribución de las PyMES al PBI y Empleo. Organismos o políticas de Apoyo a las PyMES. Incubadoras de Negocios. Durante los últimos 15 años, Argentina muestra muy pocas PyMES y bajo PBI comparada con Brasil y Canadá aún cuando se contemplen paralelismos geopolíticos, similitudes en PBI per Cápita (Argentina-Brasil) o PEA (Argentina-Canadá), entre otras muchas otras variables. Argentina no cuenta con un...

  8. Le Machine Learning confronté aux contraintes opérationnelles des systèmes de détection

    OpenAIRE

    Beaugnon , Anaël; Husson , Antoine

    2017-01-01

    International audience; Les systèmes de détection d’intrusion, reposant traditionnellementsur des signatures, n’ont pas échappé à l’attrait récent des techniquesde Machine Learning. Si les résultats présentés dans les articles de rechercheacadémique sont souvent excellents, les experts en sécurité ontcependant encore de nombreuses réticences concernant l’utilisation duMachine Learning dans les systèmes de détection d’intrusion. Ils redoutentgénéralement une inadéquation de ces techniques aux ...

  9. Systèmes turbiditiques calcaires du Tithonien et du Barrémo-Bédoulien subalpins (SE de la France) (1-3 septembre 2005)

    OpenAIRE

    Ferry , Serge; Atrops , François; Backert , Nicolas; Lozano-Garcia , F.; Savary , Bérangère

    2005-01-01

    International audience; Les systèmes turbiditiques calcaires sont encore peu étudiés par rapport à leurs homologues silico-clastiques, bien que la notion de “calcaires allodapiques” soit à peu près aussi ancienne que la notion de turbidite. Une typologie des appareils calcaires (faciès, géométries, rapports avec les plates-formes carbonatées nourricières) reste à faire.

  10. Activité antérieure – Améliorer la recherche sur les systèmes de ...

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

    15 avr. 2016 ... M. Félix Boa Yapo, directeur général de la santé de la Côte d'Ivoire, a ouvert la séance de consultation, en compagnie de Stanislas Kambour, directeur des systèmes de recherche et de renseignements sur la santé de l'OOAS, et de Chantal de Varennes, ambassadrice du Canada auprès de la République ...

  11. Protective Effects of an Ancient Chinese Kidney-Tonifying Formula against H2O2-Induced Oxidative Damage to MES23.5 Cells.

    Science.gov (United States)

    Xu, Yihui; Lin, Wei; Ye, Shuifen; Wang, Huajin; Wang, Tingting; Su, Youyan; Wu, Liangning; Wang, Yuanwang; Xu, Qian; Xu, Chuanshan; Cai, Jing

    2017-01-01

    Oxidative damage plays a critical role in the etiology of neurodegenerative disorders including Parkinson's disease (PD). In our study, an ancient Chinese kidney-tonifying formula, which consists of Cistanche , Epimedii, and Polygonatum cirrhifolium , was investigated to protect MES23.5 dopaminergic neurons against hydrogen peroxide- (H 2 O 2 -) induced oxidative damage. The damage effects of H 2 O 2 on MES23.5 cells and the protective effects of KTF against oxidative stress were evaluated using MTT assay, transmission electron microscopy (TEM), immunocytochemistry (ICC), enzyme-linked immunosorbent assay (ELISA), and immunoblotting. The results showed that cell viability was dramatically decreased after a 12 h exposure to 150  μ M H 2 O 2 . TEM observation found that the H 2 O 2 -treated MES23.5 cells presented cellular organelle damage. However, when cells were incubated with KTF (3.125, 6.25, and 12.5  μ g/ml) for 24 h after H 2 O 2 exposure, a significant protective effect against H 2 O 2 -induced damage was observed in MES23.5 cells. Using ICC, we found that KTF inhibited the reduction of the tyrosine hydroxylase (TH) induced by H 2 O 2 , upregulated the mRNA and protein expression of HO-1, CAT, and GPx-1, and downregulated the expression of caspase 3. These results indicated that KTF may provide neuron protection against H 2 O 2 -induced cell damage through ameliorating oxidative stress, and our findings provide a new potential strategy for the prevention and treatment of Parkinson's disease.

  12. PSA de radio Mes de Concientización sobre las ETS PSA de radio (30 seg) (STD Awareness Month PSA (:30))

    Centers for Disease Control (CDC) Podcasts

    2011-04-19

    Abril es el Mes Nacional de Concientización sobre las Enfermedades de Transmisión Sexual (ETS). Las ETS pueden afectar a cualquier persona. Muchas ETS no tienen síntomas, por lo que es importante hacerse pruebas de detección.  Created: 4/19/2011 by National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention.   Date Released: 4/20/2011.

  13. Modèle conceptuel commun pour la supervision des systèmes de sûreté du CERN

    CERN Document Server

    Hammouti, L

    2000-01-01

    La supervision des systèmes de sûreté des accélérateurs et des zones expérimentales du CERN est gérée spécifiquement d'une machine à l'autre. Chaque programme a été conçu et réalisé au moyen de la technologie de l'époque et sans suivre un modèle conceptuel commun. La situation actuelle risque de poser des problèmes importants pour l'avenir. En effet la disparité des systèmes de supervision et la nécessité de les faire évoluer ou de les renouveler alourdissent sensiblement la charge de travail ainsi que le coût de la maintenance. D'autre part, il est difficile, voire impossible, de les faire communiquer entre eux, or cela constitue une des requêtes principales de l'opération pour une meilleure coordination de l'exploitation. Le but de ce document consiste à présenter les bases d'un modèle conceptuel unique, en cours d'élaboration dans le cadre du LHC, afin de répondre aux problèmes et aux requêtes posés. Ce modèle servira de référence pour le renouvellement et l'évolution ...

  14. Consideraciones sobre la normativa aplicable en la preparación de información contable de PyMEs

    OpenAIRE

    Rondi, Gustavo R.; Galante, Marcelo Javier

    2012-01-01

    El propósito de la investigación es analizar la situación actual y el impacto futuro de las normas para la preparación de información financiera en las PyMEs en Argentina, a efectos de realizar propuestas específicas y aportar herramientas que contribuyan en la implementación de las mismas.

  15. Funcionamento diferencial dos itens na Escala de Motivos para Evasão do Ensino Superior (M-ES = Differential item functioning in the Higher Education Dropout Reasons Scale (M-ES = Funcionamiento diferencial del ítem en la Escala de Razones para Deserción de la Educación Superior (m-es

    Directory of Open Access Journals (Sweden)

    Ambiel, Rodolfo Augusto Matteo

    2016-01-01

    Full Text Available O estudo visou verificar a adequação da Escala de Motivos para Evasão do Ensino Superior via rating scale model e investigar a presença de funcionamento diferencial dos itens (DIF de acordo com o tipo das instituições dos participantes da pesquisa, pública ou particular. Participaram da pesquisa 327 estudantes universitários, de universidades públicas e particulares, de todos os estados brasileiros, incluindo o Distrito Federal. As idades variaram entre 17 e 58 anos, sendo 80,1% do sexo feminino. O instrumento utilizado foi a Escala de Motivos para Evasão do Ensino Superior (M-ES. Os resultados apontaram que em relação à adequação do instrumento as análises foram satisfatórias e que houve a presença de funcionamento diferencial em alguns itens, sendo que a maior parte dos itens com presença de DIF tiveram como grupo privilegiado os alunos de instituição pública. Os resultados são discutidos de acordo com a literatura e novos estudos são sugeridos

  16. A STUDY OF ANTICONVULSANT EFFECT OF FLUNARIZINE AND NIFEDIPINE IN COMPARISON WITH SODIUM VALPROATE ON MES AND PTZ MODELS OF EPILEPSY IN ALBINO RATS

    Directory of Open Access Journals (Sweden)

    Umesh G.

    2015-03-01

    Full Text Available BACKGROUND : CA +2 ions are involved in initiation as well as spread of seizures. Hence current study was undertaken to evaluate the anticonvulsant effect of calcium channel blockers flunarizine, nifedipine and compare their efficacy with that of sodium valproate, the broad spectrum anticonvulsant in MES and PTZ induced seizures in albino rats. MATERIALS AND METHODS : Albino rats were treated with nife dipine 2.5mg/kg, 5mg/kg, flunarizine 7.5mg/kg,15mg/kg and sodium valproate 250mg/kg bodyweight intraperitoneally and the effects were observed in MES and PTZ models of epilepsy. The parameters observed in MES model was , duration of HLTE phase . Convulsive p hase, and post ictal depressive phase. In PTZ model duration of seizure latency, duration of convulsion , and duration post ictal depression were observed. RESULTS : our study demonstrated that both calcium channel blockers afford protection against convulsi ons induced in both models, and flunarizine affords higher degree of protection than nifedipine, with its efficacy almost approaching that of sodium valproate. CONCLUSION : Flunarizine has significant, while nifedipine has moderate degree of anticonvulsant activity as compared to sodium valproate

  17. Dealing with Communicative Problems in English as a Lingua Franca | Traiter les problèmes communicatifs en anglais considéré comme lingua franca

    Directory of Open Access Journals (Sweden)

    Agnieszka Nowicka

    2008-01-01

    Full Text Available De nos jours, l’anglais est l’une des langues les plus utilisées dans la communication internationale. Les locuteurs qui recourent à l’anglais en tant que lingua franca maîtrisent cette langue de façon inégale. Cependant, dans ce type d’échanges les locuteurs ne sont pas confrontés uniquement à des problèmes d’origine linguistique. Notre but, dans le présent article, est de réfléchir, tout d’abord, à la question de comment les différences socio-culturelles, au niveau des styles d’interaction, peuvent influencer la communication. Ensuite, on se focalisera sur les différentes façons dont les locuteurs réagissent aux problèmes de cette nature lorsqu’ils apparaissent dans l’interaction et, finalement, on démontrera comment ces problèmes sont négociés par les locuteurs. Nous recourrons à l’analyse conversationnelle afin d’analyser des extraits d’interactions en anglais qui serviront d’illustration.

  18. HerMES: dust attenuation and star formation activity in ultraviolet-selected samples from z˜ 4 to ˜ 1.5

    Science.gov (United States)

    Heinis, S.; Buat, V.; Béthermin, M.; Bock, J.; Burgarella, D.; Conley, A.; Cooray, A.; Farrah, D.; Ilbert, O.; Magdis, G.; Marsden, G.; Oliver, S. J.; Rigopoulou, D.; Roehlly, Y.; Schulz, B.; Symeonidis, M.; Viero, M.; Xu, C. K.; Zemcov, M.

    2014-01-01

    We study the link between observed ultraviolet (UV) luminosity, stellar mass and dust attenuation within rest-frame UV-selected samples at z ˜ 4, ˜ 3 and ˜1.5. We measure by stacking at 250, 350 and 500 μm in the Herschel/Spectral and Photometric Imaging Receiver images from the Herschel Multi-Tiered Extragalactic Survey (HerMES) program the average infrared luminosity as a function of stellar mass and UV luminosity. We find that dust attenuation is mostly correlated with stellar mass. There is also a secondary dependence with UV luminosity: at a given UV luminosity, dust attenuation increases with stellar mass, while at a given stellar mass it decreases with UV luminosity. We provide new empirical recipes to correct for dust attenuation given the observed UV luminosity and the stellar mass. Our results also enable us to put new constraints on the average relation between star formation rate (SFR) and stellar mass at z ˜ 4, ˜3 and ˜1.5. The SFR-stellar mass relations are well described by power laws (SFR∝ M_*^{0.7}), with the amplitudes being similar at z ˜ 4 and ˜3, and decreasing by a factor of 4 at z ˜ 1.5 at a given stellar mass. We further investigate the evolution with redshift of the specific SFR. Our results are in the upper range of previous measurements, in particular at z ˜ 3, and are consistent with a plateau at 3 < z < 4. Current model predictions (either analytic, semi-analytic or hydrodynamic) are inconsistent with these values, as they yield lower predictions than the observations in the redshift range we explore. We use these results to discuss the star formation histories of galaxies in the framework of the main sequence of star-forming galaxies. Our results suggest that galaxies at high redshift (2.5 < z < 4) stay around 1 Gyr on the main sequence. With decreasing redshift, this time increases such that z = 1 main-sequence galaxies with 108

  19. Equilibres de phases dans les systèmes fluides petroliers-eau Phase Equilibria in Oil-Water Systems

    Directory of Open Access Journals (Sweden)

    Peneloux A.

    2006-11-01

    Full Text Available Nous présentons quelques résultats obtenus à partir du logiciel FHYD qui permet le traitement des mélanges eau-fluides pétroliers, avec la détermination de la nature des phases (huile-gaz-eau-hydrate thermodynamiquement stables dans des conditions données de température et de pression, ainsi que de la quantité, de la composition de ces différentes phases et de leurs propriétés. Ce logiciel permet le tracé automatique des diagrammes de phases et nous présentons des exemples, depuis les systèmes binaires (eau-éthane, ternaires (eau-méthane-propane jusqu'aux fluides les plus complexes. La présence de sels (chlorure de sodium dissous est envisagée, ainsi que le calcul des conditions de dépôt du sel solide. Des exemples de problèmes pétroliers sont cités (gaz de séparateur saturé en eau, huile saturée en eau dans les conditions de gisement, huile en présence d'eau salée. Les estimations sur les quantités d'hydrate formées et leurs compositions sont comparées à des données expérimentales et aux résultats obtenus par d'autres logiciels. Le programme FHYD pourrait permettre une représentation plus réaliste de l'évolution des fluides pétroliers et des propriétés de transport de leurs différentes phases dans les modèles de simulation des conduites polyphasiques. This article presents a selection of results obtained with the FHYD program. This software allows simulation of mixtures composed of petroleum fluids and water, with determination of the nature of thermodynamically stable phases (oil-gas-water-hydrate under given conditions of temperature and pressure, along with the quantity, composition and properties of these different phases. Additionally, the program can automatically produce phase diagrams. Several examples of these have been included here, ranging from binary systems (water-ethane and ternary systems (water-methane-propane to the most complex petroleum fluids. The presence of dissolved salts

  20. Prevalencia y factores asociados a macrosomía en Perú, 2013

    Directory of Open Access Journals (Sweden)

    Antonio José Ledo Alves da Cunha

    Full Text Available Objetivos. Determinar la prevalencia de macrosomía y factores asociados en Perú, y describir la ocurrencia de complicaciones durante el parto y posparto. Materiales y métodos. Los pesos al nacer de los niños menores de cinco años fueron analizados usando datos de la Encuesta Demográfica y de Salud Familiar (ENDES 2013, llevada a cabo por el Instituto Nacional de Estadística e Informática. Los niños con un peso mayor a 4000 g al nacer fueron considerados como macrosómicos. Se empleó un análisis de regresión logística para establecer la asociación independiente de factores sociodemográficos con la macrosomía. Resultados. La muestra estuvo constituida por 6121 niños. La prevalencia de macrosomía fue 5,3% (intervalo de confianza al 95%: 4,8 a 5,9. El sexo masculino, un orden de nacimiento mayor, la obesidad materna y una mayor estatura materna estuvieron independientemente asociados con la macrosomía. Los partos por cesárea fueron más frecuentes en niños macrosómicos (43,9% vs 26,9%. Las complicaciones durante el parto y posparto fueron frecuentes, pero no estadísticamente asociadas con la macrosomía. Conclusiones. La prevalencia de macrosomía en Perú es relativamente baja comparada con otros países de ingresos bajos o medios. Los factores asociados con la macrosomía fueron principalmente no modificables, con excepción de la obesidad materna. Los niños macrosómicos nacieron más frecuentemente por cesárea. La reducción del peso y la prevención de la obesidad en mujeres en edad fértil en Perú podrían potencialmente reducir la macrosomía y las tasas de cesáreas.

  1. Salvadoran fathers' attendance at prenatal care, delivery, and postpartum care La presencia de los padres salvadoreños durante la atención prenatal, el parto y la atención posparto

    Directory of Open Access Journals (Sweden)

    Marion W. Carter

    2005-09-01

    Full Text Available OBJECTIVE: To provide a baseline perspective on the prevalence of Salvadoran men's attendance at prenatal care, delivery, and postpartum well-baby care and on sociodemographic factors associated with their attendance, with the goal of informing efforts to help men play more positive roles in maternal-child health. METHODS: The data came from the 2003 Salvadoran National Male Health Survey. The data focused on fathers (n = 418 and their most recent live-born child in the preceding five years. Factors associated with the fathers' participation in prenatal care visits, attendance at delivery, and participation in postnatal well-baby visits were explored using logistic and multinomial regression models. RESULTS: Ninety percent of the recent Salvadoran fathers who were surveyed participated in a prenatal care visit, attended the delivery, or participated in a postpartum well-baby care visit; 34% participated in all three of the activities. Attendance at delivery was most common, reported by 81% of fathers; the most common reason that subjects cited for not attending was that they had had to work. CONCLUSIONS: A large majority of the Salvadoran fathers participated in at least one prenatal care visit, delivery, or a postpartum well-baby care visit. While attendance alone does not necessarily indicate that men are supporting their partners, the results suggest that norms are in place for men to play positive roles in maternal-child health matters. Furthermore, the participation of fathers in these maternal and child health care activities may provide new opportunities to educate and further support men in both their own health and their family's health.OBJETIVO: Proporcionar información de base acerca de la frecuencia con la cual los hombres salvadoreños acuden a la atención prenatal, al parto y a la atención del bebé sano después del parto, así como acerca de los factores sociodemográficos que se asocian con su asistencia a esas actividades, a

  2. Poèmes

    Directory of Open Access Journals (Sweden)

    Beryl Schlossman

    2012-10-01

    Full Text Available Video Senegal (From Some Night Traduction par l’auteur Victor’s home movies from Senegalaspire to the stasis of postcardsbut the women turn away and hideunder veils, their long legs stalkacross the screen and run fasterthan birds: migrating herons andindifferent pink flamingosstep toward the edge of the coast. Victor fait des films au Sénégal,ce pays qu’il aimerait figer commeun papillon de nuit ou une cartepostalemais les femmes se détournentse voilent, traversent l’écranrapidement se mette...

  3. Poèmes

    Directory of Open Access Journals (Sweden)

    Théo Crassas

    2012-10-01

    Full Text Available Paris Volez jusqu’aux limites océaniques de votre organisme vivant, épanouissez-vous en quatre lignes de ciel, devenez jet naturel aux sonorités de mille jours, cherchez votre mouvement dans les travaux de votre poitrine et dans le dessin d’or de votre surface, faites jouer le jardin des cloches et des balançoires, mirez-vous au-delà de toute image secondaire, dans votre essence de Babyloniens, chassez celui qui a maudit vos édifices, frottez-vous sans mépris à la poussière des oiseaux en sur...

  4. Changements climatiques au Maroc: quels systèmes de culture et quelles biotechnologies pour s’y adapter ?

    Directory of Open Access Journals (Sweden)

    Abdelhadi AIT HOUSSA

    2017-09-01

    scale use of seawater in agriculture or finding new salinity tolerant cultivars. In Morocco, we should think of desalinization with renewable energies (solar, wind and the use of this water mainly in coastal areas where climate, land quality, sun and wind are adequate to these projects. To anticipate the future of food security of the country, attention should be given to the use of readily available resources to overcome the structural deficit in wheat starch and animal protein. The study suggests the use of other starch sources that Morocco can produce easily such as potato. For animal protein, we suggest fisheries resources which are still underused by the population. Résumé On présente une étude prospective concernant l’impact probable des changements climatiques sur les systèmes de culture et d’élevage au Maroc. D’après le constat de terrain et dans les limites de ce que signifie ce genre d’étude, l’effet direct du réchauffement climatique peut conduire à terme (et c’est déjà le cas dans certaines contrées à la nécessité d’une redistribution variétale pour des espèces exigeantes en froid comme les rosacées. Des variétés de pomme, telle que le groupe des Golden, risquent de disparaître des montagnes pour laisser la place à d’autres moins exigeantes comme le groupe des Gala. Le bananier et l’avocatier risquent de migrer vers les régions un peu plus continentales, l’olivier et les agrumes un peu plus vers le pied de la montagne. Le réchauffement climatique peut aussi obliger à faire évoluer les systèmes d’élevage et de culture en faisant déplacer la frontière de la sécheresse un peu plus vers le centre et le nord du pays; l’aride serait peut-être envahi par la désertification, le semi-aride passerait en partie à l’étage aride et le Bour dit favorable en partie dans le semi-aride. Comme corollaire à ce changement, il faudrait s’attendre à une perte de potentiel de ressources en eau qui obligerait

  5. Una Revisión Sistemática en los Marcos de Trabajo de Desarrollo Software en las MiPyMEs Productoras de Software

    OpenAIRE

    Antonio A. Aguileta; Grisel B. Ancona; Edwin J. León; Juan P. Ucán

    2015-01-01

    Una revisión sistemática es considerada como un método o protocolo que permite sintetizar investigaciones científicas de diversas áreas, la Ingeniería de Software no es la excepción. En este artículo se presenta este protocolo aplicado en la búsqueda de publicaciones relacionadas con las adaptaciones a los marcos de trabajo de desarrollo de software llevadas a cabo en MiPyMEs desarrolladoras de software, en el período comprendido de 1995 al 2013, centrándose en tendencias, países y sectores q...

  6. Un projet de développement forestier au Niger : problèmes d'adaptation des objectifs initiaux aux contraintes de réalisation

    OpenAIRE

    Clément, Jean

    1986-01-01

    Comme tous les pays du Sahel, le Niger est affronté à de graves problèmes de désertification et de déboisement dont les causes sont diverses : sécheresses successives,intensification du paturage provoquée par l'accroissement des troupeaux, consommation accrue de bois de feu... Sur la base d'une population totale de 6 OOO OOO habitants, la consommation de bois de feu peut être estimée à environ 4 OOO OOO m3 qu'il faut comparer aux 3 OOO OOO m3 d'accroissement en volume annuel des peuplements n...

  7. La industria naval de la ciudad de Mar del Plata. Situación de las PyMEs y de las grandes empresas

    OpenAIRE

    Zini, José María

    2013-01-01

    El objetivo de este trabajo es brindar una descripción cualitativa de la problemática que hoy posen la pequeñas empresas del sector del Industria Naval en la ciudad de Mar del Plata en relación a los grandes grupos económicos que dominan la actividad pesquera y que afectan directamente al normal funcionamiento de estas PyMEs, teniendo en cuenta que denominamos Pymes a aquellas empresas que facturan anualmente hasta $15.000.000 y desde ese valor en adelante las llamamos Grandes Empresas. La in...

  8. Politiques et dynamique des systèmes de production: comment concilier défi alimentaire, compétitivité et environnement ?

    OpenAIRE

    Chatellier, Vincent; Dupraz, Pierre

    2011-01-01

    Cette communication propose une réflexion portant sur l’influence des politiques publiques (commerciale, agricole et environnementale) sur la dynamique des systèmes de production en agriculture. Elle rappelle, dans un premier temps, que les politiques commerciales définies dans le cadre des accords de l’OMC contribuent à une libéralisation accentuée des marchés agricoles internationaux. En se focalisant sur les principales productions agricoles développées dans l’Union européenne (céréales, l...

  9. Systèmes coopératifs hybride Satellite-Terrestre : analyse de performance et dimensionnement du système

    OpenAIRE

    Sreng, Sokchenda

    2012-01-01

    Les systèmes de communications par satellite sont utilisés dans le contexte de la radiodiffusion, de la navigation, du sauvetage et du secours aux sinistrés, car ils permettent de fournir des services sur une large zone de couverture. Cependant, cette zone de couverture est limitée par l'effet de masquage provoqué par des obstacles qui bloquent la liaison directe entre le satellite et un utilisateur terrestre. L'effet de masquage devient plus sévère en cas de satellites à faibles angles d'élé...

  10. Sistema de garantías: financiamiento a las PyMEs a través del mercado de capitales en Argentina. Instrumento: cheque de pago diferido

    OpenAIRE

    Gonzalez Barros, Ariel

    2014-01-01

    Este trabajo propone realizar un análisis exhaustivo sobre uno de los nuevos instrumentos disponibles para brindar financiamiento a las PyMEs en la Argentina a través del Mercado de Capitales. Específicamente se abordará el estudio del financiamiento a dicho segmento a través de la negociación del cheque de pago diferido, instrumento derivado de la obtención de avales por parte de las Sociedades de Garantía Reciproca. Se detallará la evolución del marco normativo vigente, tendiente a operativ...

  11. Variación del peso durante el primer mes de vida en recién nacidos de término sanos con lactancia materna exclusiva

    OpenAIRE

    COVAS, MARÍA; ALDA, ERNESTO; VENTURA, SILVIA; BRAUNSTEIN, SILVIA; SERRALUNGA, GABRIELA; YÁÑEZ, LORETO

    2008-01-01

    La variación del peso en recién nacidos sanos resulta de interés clínico, principalmente en aquellos niños con lactancia materna exclusiva. Objetivos. Determinar el cambio relativo del peso al nacer durante el primer mes, en recién nacidos de término sanos, alimentados exclusivamente con pecho. Diseño. Observacional; tipo cohorte. Prospectivo. Población, material y métodos. Recién nacidos asistidos entre septiembre de 2000 y noviembre de 2001. Criterios de elegibilidad: recién nacidos de térm...

  12. Prevalencia de tabaquismo durante el embarazo y factores asociados en Andalucía 2007-2012

    Directory of Open Access Journals (Sweden)

    Pedro M. Mateos-Vílchez

    2014-01-01

    Full Text Available Fundamentos: El tabaquismo durante la gestación constituye el principal problema prevenible de salud perinatal. El objetivo es establecer la prevalencia de tabaquismo de las mujeres gestantes en distintos momentos del embarazo así como explorar factores asociados al mismo. Métodos: Estudio transversal. La población diana fueron las mujeres cuyo control de embarazo se realizaba en centros de salud públicos. Muestra aleatoria representativa de 40 centros estratificados según número de embarazos. Participaron 1.813 mujeres seleccionadas en 3 muestras independientes (inicio y final del embarazo y posparto. La exposición se midió mediante cotinina en orina, autodeclaración y monóxido de carbono. Se registraron variables sociodemográficas, de tabaquismo y clínico-obstétricas. Se realizó una regresión logística para identificar los factores asociados al tabaquismo. Resultados: La prevalencia media fue 21,6%, menor al final del embarazo (15,6% y en el puerperio (16,7% y mayor en el principio del embarazo (30,3%. Las mujeres fumadoras diarias pasaron del 56,3% antes del embarazo al 14% al final (autodeclaración. El 21,8% de los abandonos se produjo antes del embarazo y el 23,6% cuando las mujeres supieron que estaban embarazadas. La ocultación del consumo fue 19,6% . Fueron factores asociados ser joven (OR: 0,956; IC: 0,92-0,99, estar expuesta al tabaco en el hogar (OR: 3,48; IC: 2,6-4,7, consumo pregestacional alto (6-10 OR: 13,1 IC: 3-56,9; >10 OR: 25,1 IC: 5,8-109,6, mayor edad gestacional en la medición (al final OR: 0,5 IC: 0,4-0,8; posparto inmediato OR: 0,4 IC: 0,3-0,6 y menor nivel de estudios (sin estudios y primer grado comparadas con universitarias OR: 1,98; IC: 1,22-3,22. Conclusiones: El perfil de la mujer gestante fumadora es el de una mujer joven con bajo nivel educativo, expuesta al humo de tabaco en el hogar y con alto consumo pregestacional.

  13. Systèmes multimatériaux – Assemblage par collage Multimaterial systems – Adhesive bonding

    Directory of Open Access Journals (Sweden)

    Zuanna C. Dalla

    2013-11-01

    Full Text Available L'assemblage par collage multimatériaux (métal/composite, métal/verre, métal/plastiques, verre/plastiques… offre de nombreux avantages par rapport aux techniques d'assemblages traditionnelles (pas d'affaiblissement des matériaux par la température, tenues en fatigue et à la corrosion améliorées, esthétisme, étanchéité…. Cependant la qualité et la durabilité à long terme des assemblages collés dépendent d'une bonne conception de ces assemblages : Le choix de préparations de surfaces efficaces, robustes, facilement industrialisables et respectueuses de l'environnement, Le choix d'adhésifs aptes à répondre au cahier des charges fonctionnel de l'assemblage (performances mécaniques, thermiques, chimiques… dont la mise en œuvre est compatible avec les contraintes d'industrialisation (cadences, temps de manipulation des pièces, environnement du poste collage…, Le dessin et le dimensionnement de la liaison de façon à transmettre les efforts mécaniques spécifiés dans la plage de températures de fonctionnement des pièces collées (en tenant compte des dilatations différentielles des matériaux assemblés. Cette démarche sera développée en donnant l'état de l'art actuel et les avancées les plus récentes sur les trois thèmes cités ci-dessus. Adhesive-bonding offers many advantages over traditional joining techniques (no weakening of materials by temperature, required fatigue and improved corrosion resistance, aesthetics, sealing… for multimaterial assembly (metal/composite, metal/glass, metal/plastic, glass/plastic…. However the quality and long term durability of bonded assemblies depend on a correct design of the joint: Choice of eco-efficient surfaces preparations, robust, and easily processed, Choice of adhesive in good adequation with the functional specifications of the assembly (mechanical performance, thermal, chemical… whose implementation is compatible with industrialization constraints

  14. L'interdépendance entre les sous-systèmes conjugal et parental: une analyse personne-processus-contexte

    Directory of Open Access Journals (Sweden)

    Bigras Marc

    2000-01-01

    Full Text Available Dans le présent article nous étudions les mécanismes de transmission des difficultés socioaffectives entre les systèmes conjugal et parental sous l'effet d'une part de stress contextuels comme la pauvreté des familles et, d'autre part, des caractéristiques personnelles des membres de ces familles comme le sexe et l'âge de l'enfant. Un échantillon de couples avec ou sans enfant permet dans une première étude d'estimer l'impact de la présence de l'enfant sur le couple alors que deux autres études posent la question complémentaire de l'impact du couple sur l'enfant. Les résultats de ces études contribuent à démontrer l'interdépendance entre le couple et l'enfant alors que chaque membre de la famille peut-être une source d'influence sur les autres. Nous argumentons qu'une réponse aversive à des problèmes extrafamiliaux favorise des stress intrafamiliaux mais que cela se révèle surtout selon les caractéristiques des membres de la famille.

  15. Lessons from the autumn 2014 flash floods in the city of Nîmes and its neighborhood (France: behavior of several mitigation dams and hydrological analysis

    Directory of Open Access Journals (Sweden)

    Fouchier Catherine

    2016-01-01

    Full Text Available The Languedoc area, in Southern France, is prone to autumnal flash floods which are characteristic of the Mediterranean climate. To cope with this threat, the local authorities have chosen to build several dams on the main dangerous rivers of the area. We have focused on the flood mitigation facilities of two operators: the City of Nîmes and the Gardons Rivers Managing authority. After the catastrophic flash flood of October 1988, the city of Nîmes built flood mitigation dams on many of its high-risk streams. These flood barriers worked several times during the intense rainfalls of autumn 2014. The on-site conclusions drawn from these floods and the computation carried out with hydrological models confirmed how well the dams functioned. In 2010, the Gardons Rivers Managing authority built a flood mitigation dam on the Esquielle River to protect the village of Saint-Geniès-de-Malgoirès. The spillway of this dam worked for the first time in the autumn of 2014. We analyzed one of the major floods monitored on that occasion at its outlet. The goals of this study are: (i to evaluate dams efficiency and (ii to test, on a catchment which was not used for its calibration, the AIGA flash flood warning method, which was developed by IRSTEA.

  16. Methodological development for 87Sr/86Sr measurement in olive oil and preliminary discussion of its use for geographical traceability of PDO Nîmes (France).

    Science.gov (United States)

    Medini, Salim; Janin, Myriam; Verdoux, Patrick; Techer, Isabelle

    2015-03-15

    The lack of a geographical identification protocol for olive oils can lead to fraud and health risks. As some works call for Sr isotopes for the geographical identification of agri-food products, this study focus on the feasibility of extracting Sr from olive oils for isotopic measurements by TIMS. In fact, existing protocols for purification of Sr are unsuitable for lipid matrix. The defined protocol is applied to samples of PDO Nîmes olive oil. The accuracy of the extraction procedure is tested against isotopic standards. The values obtained are in conformity with NIST certified values. This consistency demonstrates that no modification of (87)Sr/(86)Sr ratio is brought about by this protocol. Consequently, the method is preliminary used on PDO Nîmes and Moroccan oils to evaluate the feasibility of a discriminant Sr signature on the two geographical products. This study provides promising results for the geographical discrimination and identification of PDO olive oils. Copyright © 2014 Elsevier Ltd. All rights reserved.

  17. Genome-wide linkage scan for factors of metabolic syndrome in a Chinese population

    Directory of Open Access Journals (Sweden)

    Chan Juliana CN

    2010-02-01

    Full Text Available Abstract Background Shared genetic factors may contribute to the phenotypic clustering of different components of the metabolic syndrome (MES. This study aims to identify genetic loci that contribute to individual or multiple factors related to MES. Results We studied 478 normoglycemic subjects ascertained through 163 families participating in the Hong Kong Family Diabetes Study. Factor analysis on 15 MES-related traits yielded 6 factors including adiposity factor (body mass index, waist and hip circumferences, insulin factor (fasting insulin and insulin AUC during OGTT, glucose factor (fasting glucose and glucose AUC during OGTT, TC-LDLC factor (total cholesterol and LDL-cholesterol, blood pressure factor (systolic and diastolic blood pressure and TG-HDLC factor (triglycerides and HDL-cholesterol. Genome-wide linkage analyses were performed on these factors using variance component approach. Suggestive evidence for linkage (LOD = 1.24 - 2.46 were observed for adiposity factor (chromosome 1 at 187 cM, chromosome 9 at 34 cM and chromosome 17 at 10 cM, insulin factor (chromosome 2 at 128 cM, chromosome 5 at 21 cM and chromosome 12 at 7 cM, glucose factor (chromosome 7 at 155 cM, TC-LDLC factor (chromosome 7 at 151 cM and chromosome 13 at 15 cM and TG-HDLC factor (chromosome 7 at 155 cM. Conclusions In summary, our findings suggest the presence of susceptibility loci that influence either single (chromosomes 1, 2, 5, 9, 12, 13 and 17 or multiple factors (chromosome 7 for MES in Hong Kong Chinese without diabetes.

  18. Modification de la surface du cuivre par implantation ionique par source plasma (IISP): applications à l’érosion cathodique dans les systèmes à arcs

    OpenAIRE

    Roy, F

    2006-01-01

    L’érosion cathodique est un phénomène bien connu qui limite la durée de vie de l’électrode négative dans les systèmes à arcs. Dans le présent mémoire, nous avons tenté de voir si la formation de précipités nanométriques d’oxyde de cuivre pouvait réduire l’érosion cathodique nécessaire au maintien de l’arc en mode thermo-champ (T-F). Les dits précipités ont été produits par implantation ionique par source plasma (IISP). Avec l’aide de techniques de caractérisation telle que la microscopie à fo...

  19. Optimisation globale de problèmes Min-Max : Application à la synthèse de loi de commande robuste

    OpenAIRE

    Monnet , Dominique; Ninin , Jordan; Clement , Benoit

    2018-01-01

    International audience; Ces dernières années, la robotisation et l'automatisation des processus a eu une formidable croissance. Pour le grand public, le développement des drones aériens et des voitures auto-nomes a créé un véritable engouement pour les véhicules autonomes. L'utilisateur réclame de plus en plus que les systèmes d'aide à la décision, dans lesquels il devait intervenir, soient maintenant automatisés complètement, mais sans toutefois, dégrader la qualité du système ou sa sécurité...

  20. Nuevos registros de aves en el bosque mesófilo de montaña del noreste de Hidalgo, México

    Directory of Open Access Journals (Sweden)

    Miguel Angel Martínez-Morales

    2015-06-01

    Full Text Available Se reportan nuevos registros y ampliaciones en el área de distribución de Harpagus bidentatus, Glaucidium sanchezi, Attila spadiceus, Cyanolyca nana, Oreoscoptes montanus y Peucedramus taeniatus. Estas seis especies de aves fueron registradas en el bosque mesófilo de montaña del estado de Hidalgo, México. Dos de estas especies (G. sanchezi y C. nana son especies de distribución restringida, lo que eleva a tres el número de especies de distribución restringida en la zona. Esto enfatiza la importancia de esta región en la conservación de la diversidad de aves. Se discuten las implicaciones de estos nuevos registros en la obtención de inventarios completos de la avifauna de la región y en la conservación de su diversidad de aves.

  1. Etudes sur le mobilier Boulle, l'ébéniste de Louis XIV : quelques problèmes d'interfaces

    OpenAIRE

    Darque-Ceretti , Evelyne; Felder , Eric; Morini , Romain; Aucouturier , Marc; Paulin , Marc-André; Mathieu-Daudé , Agnès

    2010-01-01

    National audience; Dans le cadre d'un programme mis en place par le musée du Louvre, département des objets d'art, et le C2RMF, autour de l'étude et de la restauration des mobiliers attribués à l'atelier d'André-Charles Boulle ou à ses successeurs, il a été dégagé plusieurs problèmes concernant les marqueteries métalliques et les ornements en bronze doré. Cette communication traite en premier lieu de la compréhension de la mauvaise tenue au vieillissement des collages des pièces de marqueteri...

  2. Actes des 5èmes Journées Scientifiques du GDR3544 Sciences du Bois. Journées Annuelles du GDR 3544 Sciences du Bois

    OpenAIRE

    CHAPLAIN, Myriam; CARE, Sabine; GRIL, Joseph

    2016-01-01

    Le Groupement de Recherche en Sciences du bois (GDR3544 Sciences du Bois) a été créé en 2012 par le CNRS et renouvelé en 2016 pour 5 ans. La mission de ce groupement est : (1) de structurer la recherche sur le bois en France pour lui donner une visibilité nationale, (2) de contribuer au développement de la formation en sciences du bois et (3) de servir de relai aux réseaux internationaux de sciences du bois. Les 5èmes journées annuelles du GDR Bois ont été organisées à Bordeaux, au domaine du...

  3. Détection des symptômes anxieux et dépressifs en médecine générale

    OpenAIRE

    Bertin Persichini, Caroline

    2015-01-01

    Contexte : L’anxiété et la dépression sont des problèmes de santé publique. Ces troubles sont fréquents et il est indispensable de les diagnostiquer. Le diagnostic se fait principalement par les médecins généralistes et se base sur leur intuition.Objectif : L’objectif principal était d’établir la sensibilité et la spécificité des médecins généralistes dans la détection de l’anxiété et de la dépression, quelque soit le motif de consultation.Méthodes : Les médecins participants étaient des mait...

  4. Modelo de madurez para la valoración de las mejores prácticas de las PyMES manufactureras

    Directory of Open Access Journals (Sweden)

    Oscar Montaño-Arango

    2018-01-01

    Full Text Available En este trabajo se desarrolló un modelo para medir la aplicación de las mejores prácticas de un grupo de pequeñas empresas manufactureras del estado de Hidalgo. La metodología partió de una investigación con un enfoque mixto, donde el diseño planteado permitió desarrollar un diagnóstico y valorar 14 prácticas comunes en las PyMES en 4 niveles de madurez: vulnerable, estable, crecimiento y mejora continua. Se realizó un benchmarking con las prácticas, que permitieron posicionar a las empresas en 3 pilares: Estructura-Conocimiento-Aplicación, lo cual permitió conocer el estatus de cada empresa; de acuerdo a indicadores que proporcionan los puntos de debilidades, habilidades y sostenibilidad en su manejo.

  5. Dislocations et propriétés mécaniques des matériaux céramiques: Quelques problèmes

    Science.gov (United States)

    Castaing, J.; Dominguez Rodriguez, A.

    1995-11-01

    The study of plastic deformation of ceramic materials raised new problems on low temperature dislocation glide and high temperature dislocation climb. Mechanical behaviour can be explained. In this paper, we review some examples related to oxides which are linked to the activity of J. Philibert. L'étude de la déformation plastique de matériaux céramiques monocristallins a donné l'occasion de poser des nouveaux problèmes sur le glissement des dislocations à basse température et sur leur montée à haute température. Le comportement mécanique peut ainsi être expliqué. Nous passons en revue des cas concernant les oxydes dans lesquels J. Philibert a joué un rôle important.

  6. Creatividad organizacional como un factor clave en el proceso de gestion de la innovacion para el desarrollo de nuevos productos, sector de estudio las PyMEs

    Directory of Open Access Journals (Sweden)

    Oscar Lopez

    2010-01-01

    Full Text Available The purpose of this study is to analyze organizational creativity as a key element in the process of product innovation. Analyzing some manage models for organizational creativity presented by various authors who have studied this phenomenon. Also, this element of Organizational Creativity stems from a doctoral study in which this variable is considered as the contribution to a new management model for the innovation process in developing new products for the SME sector. The analysis of results and conclusions are derived from a study of 34 samples to the industry of information technology in Nuevo León, México.

  7. Collaboration pour l'analyse et l'innovation en matière de systèmes ...

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

    School health in South Africa : reflections on the past and prospects for the future. Téléchargez le PDF. Articles de revue. Health policy and systems research : needs, challenges and opportunities in South Africa - a university perspective. Téléchargez le PDF. Articles de revue. Whole-system change : case study of factors ...

  8. Une intervention en centres d’hébergement et de soins de longue durée visant à réduire les problèmes de santé mentale liés au travail

    Directory of Open Access Journals (Sweden)

    Michel Vézina

    2005-05-01

    Full Text Available Une intervention visant la diminution des contraintes de l’environnement psychosocial du travail et de leurs effets sur la santé mentale a été mise en place à l’hiver 2002. Cette intervention se résume en cinq étapes : l’engagement du milieu et la constitution d’une équipe d’intervention, l’identification des contraintes, l’élaboration des plans d’action, l’actualisation des plans d’action et l’évaluation de l’intervention. La recherche se déroule dans douze centres d’hébergement et de soins de longue durée (CHSLD et inclut l’ensemble du personnel soignant en contact direct avec la clientèle (N = 493. Un devis quasi-expérimental avec quatre groupes expérimentaux, huit groupes témoins et des mesures avant et après l’intervention a été utilisé.La description des phases de développement et d’implantation de la démarche d’intervention est présent��e ainsi que l’évaluation à 12 mois des effets de l’intervention sur la prévalence des contraintes psychosociales au travail et des problèmes de santé mentale.An intervention aimed at reducing adverse occupational psychosocial factors and their mental health effects was begun during the winter of 2002. This intervention can be summarized in five steps: commitment of stakeholders and setting up of an intervention team, identification of adverse occupational psychosocial factors, development of an action plan, implementation of the action plans, and evaluation of the intervention. The study was conducted in twelve residential and extended care centres (CHSLD and included all care-giving staff in direct contact with patients (N= 493. A quasi-experimental design was used with four experimental groups and eight control groups, and with pre- and post-intervention measurements.The description of the intervention’s development and implementation phases and the evaluation at 12 months of the effects of the intervention on the prevalence of

  9. Factores que influyen en el abandono temprano de la lactancia por mujeres trabajadoras

    Directory of Open Access Journals (Sweden)

    Navarro-Estrella Manuel

    2003-01-01

    Full Text Available OBJETIVO: Identificar los factores maternos, laborales y de los servicios de salud que influyen en el abandono temprano de la lactancia materna en madres trabajadoras. MATERIAL Y MÉTODOS: Entre noviembre de 1998 y marzo de 1999 se efectuó un estudio transversal comparativo con madres derechohabientes del Instituto Mexicano del Seguro Social de Ensenada, Baja California, México. A 265 madres se les aplicó un cuestionario entre los tres y nueve meses posparto. Se distribuyeron en: grupo I: madres con abandono temprano de la lactancia materna; grupo II: madres que prolongaron la lactancia materna por más de tres meses. Para identificar los factores asociados con el abandono temprano de la lactancia materna, se utilizó regresión logística. RESULTADOS: El 42.3% (112 de las madres abandonaron temprano la lactancia materna. Los factores de riesgo fueron: tener conocimientos malos sobre lactancia materna, OR 5.97 (IC 95% 1.67-20.67, la ausencia del antecedente de haberla practicado en un hijo previo OR 2.98 (IC 95% 1.66-5.36, tener un plan de duración de la misma de 0 a 3 meses, OR 16.24 (IC 95% 5.37-49.12, y la falta de facilidades en el trabajo para efectuarla, OR 1.99 (IC 95% 1.12-3.56. CONCLUSIONES: Los principales factores asociados con el abandono temprano de la lactancia materna fueron maternos. El único factor laboral fue la ausencia de facilidades para amamantar. Es probable que la calidad de los conocimientos, la experiencia previa con ella y tener facilidades laborales influyan en la decisión de prolongarla.

  10. L'Afrique centrale: entre traditions et transitions. La mutation des socio-écosystèmes en Afrique centrale

    OpenAIRE

    Gillet, Pauline

    2016-01-01

    The forests of the Congo Basin are among the best preserved areas on Earth. Nevertheless, the factors causing deforestation around the world are also present in this subregion. The forest transition theory describes how the trend of forest areas decline at national level may precede an increase in these areas. If the effects of the forest transition are well known in terms of forest cover degradation, little is known about the effects of forest transition on socio-ecosystems (SES) (understood...

  11. Conséquences écologiques des introductions dans les hydrosystèmes : essai de synthèse

    Directory of Open Access Journals (Sweden)

    HAURY J.

    1997-01-01

    Full Text Available Un essai de bilan des effets écologiques des introductions d'espèces est présenté à partir des exposés des orateurs de ce colloque et de la bibliographie. L'aspect inéluctable de la dispersion des espèces au cours du temps et l'efficacité toute relative des barrières intracontinentales qui s'y opposent sont soulignés. Les mécanismes en cause - vagilité et fécondité des espèces introduites, efficacité des barrières, structure des réseaux trophiques récepteurs, degré de saturation de leurs niches écologiques - sont étudiés en regard du fonctionnement des hydrosystèmes, montrant la complexité du problème. Des effets écologiques très variés sont décrits, dont beaucoup sont non intentionnels et inattendus ; un exemple bibliographique est développé, mettant en évidence la diversité des effets de la même introduction selon le milieu récepteur. Il en ressort la nécessité préliminaire absolue d'examiner à la fois la biologie des espèces à introduire et le fonctionnement de l'écosystème récepteur. Un principe de précaution est préconisé face à toute introduction volontaire, et une réglementation sévère et efficace face aux introductions involontaires. Le besoin d'une permanence d'agents de terrain pour établir une veille écologique est souligné. Face au manque de données objectives, des recherches scientifiques sur les effets écologiques des introductions passées ou possibles doivent être initiées ou poursuivies dans un cadre écosystémique, impliquant au minimum un suivi des écosystèmes risquant d'être colonisés.

  12. Une méthodologie d'analyse des effets de la globalisation sur les systèmes régionaux locaux

    Directory of Open Access Journals (Sweden)

    Silvana Lombardo

    1999-06-01

    Full Text Available Ce travail a pour but d'enrichir les études concernant les répercussions du changement de l'économie de l'entreprise au niveau global sur les modèles d'organisation territorial au niveau local les entreprises. La recherche part du constat d'une insuffisance du cadre d'étude et d'un manque d'information systématique généralisé. Dans ce but nous avons essayé d'approfondir certains aspects théoriques relatifs d'une part au modèle de réseau que relie les composantes du système territorial, et d'autre part aux effets de globalisation de l'entreprise.Nous avons abordé l'analyse des systèmes industriels de deux régions de l'Italie - les Abbruzes et le Lazio - très peu étudiées mais qui, dans les années dernières, ont montré de grands changements, notamment en ce qui concerne les PME et la formation de véritables systèmes locaux organisés afin de répondre d'une façon très active aux mutations du système économique global.L'analyse s'appuie sur une enquête directe par questionnaire adressée à un échantillon d'entreprises. La loi sur "la privacy" nous a contraintes à employer les données traditionnelles de l'Institut Central de Statistiques et de l'Union des Chambres de Commerce, à partir desquelles nous avons défini l'univers statistique et construit un échantillon représentatif.Les connaissances produites par l'analyse des données permettent de déterminer les formes des questions et d'identifier les aspects devant être approfondis. Les premières conclusions portent en particulier sur les facteurs principaux des choix de localisation de l'entreprise.

  13. Transition quantique entre états électroniques de systèmes bi-couche

    Science.gov (United States)

    Pasquier, Vincent

    The possible phase transitions when two layers at filling factor νt=1 are gradually separated are studied in this article. In the bosonic case the system should undergo a pairing transition from a Fermi liquid to an incompressible state. In the Fermionic case, the state evolves from an incompressible (1,1,1) state to a Fermi liquid. It is speculated that there is an intermediate phase involving charge two quasiparticles. To cite this article: V. Pasquier, C. R. Physique 3 (2002) 709-715.

  14. 数据采集终端Web通信服务器嵌入式设计%Embedded Design of Web Server for MES Acquisition Terminal

    Institute of Scientific and Technical Information of China (English)

    邓耀华; 吴黎明

    2010-01-01

    设计了一种基于嵌入式系统的制造执行系统(MES)采集终端Web通信服务器,采用ARM9平台作为硬件控制器,Linux操作系统和BOA服务器作为软件平台.介绍了Web服务器中BOA的工作原理,给出了BOA服务器参数配置的详细过程,研究了外部应用扩展应用程序与Web服务器进行通信和参数传递的方法,最后对Web服务器与外部扩展之间的通信进行测试仿真,仿真结果表明,BOA在嵌入式Web服务器运行正常,数据通信可靠正确,Web服务器实时性好,该终端采集服务器具有实际的运用和推广价值.

  15. Avances en las Mejoras de Procesos Software en las MiPyMEs Desarrolladoras de Software: Una Revisión Sistemática

    Directory of Open Access Journals (Sweden)

    Gerzon E. Gómez

    2014-08-01

    Full Text Available Este trabajo presenta la aplicación de un protocolo para revisiones sistemáticas de Ingeniería de Software. En este artículo el protocolo es utilizado como un modelo formal aplicado a la búsqueda de publicaciones relacionadas con las adaptaciones SPI llevadas a cabo en MiPyMEs desarrolladoras de software, en el período comprendido de 1995 a diciembre de 2013, centrán- dose en tendencias, países, y sectores que publican, así como en los modelos, metodologías, estándares y procesos de soporte del software del área de calidad. Los resultados obtenidos sugieren que en la comunidad de Ingeniería de Software hay un interés creciente en este tema, por ejemplo, la mayoría de las inves-tigaciones realizadas surgen en el sector educativo. El modelo de procesos y la metodología más utilizada es CMMi y Xtreme Pro-graming, respectivamente. El estándar más utilizado es el ISO/ IEC 15504 y el proceso de soporte del software del ciclo de vida del software mayormente abordado es SQA.

  16. Les nouveaux systèmes de propulsion envisageable pour les véhicules urbains Potential New Proplusion Systems for Urban Vehicles

    Directory of Open Access Journals (Sweden)

    Salé B.

    2006-11-01

    Full Text Available On demande de plus en plus aux véhicules particuliers utilisés en zone urbaine de répondre à un certain nombre de contraintes relatives à la pollution, au bruit et aux économies d'énergie. Il convient donc d'examiner les différents modes de propulsion qui peuvent être retenus en les classant en deux grandes catégories les systèmes thermomécaniques et les systèmes électrochimiques. Les systèmes thermomécaniques, et parmi eux les moteurs à explosion, présentent l'avantage de disposer à la fois d'une puissance massique élevée et d'une énergie massique importante grâce aux possibilités de stockage qu'offrent les hydrocarbures légers. Dans ces conditions il apparaissait tentant, au moins en première étape, d'adapter les moteurs à explosion classiques aux exigences nouvelles en matière d'environnement et d'économie et ceci d'autant plus que ce type de moteur couvre à l'heure actuelle et pour plusieurs années encore la quasi-totalité du parc automobile. Un effort de recherche important a déjà permis de réduire dans une forte proportion les émissions de polluants par l'adaptation de nouveaux modes de combustion ou par l'utilisation de pots catalytiques. Cet effort s'étend d'ailleurs à l'étude d'autres convertisseurs thermomécaniques, tels que le moteur Stirling, qui conjugue les avantages d'un rendement plus élevé à celui d'une pollution réduite, et tels que le moteur à vapeur handicapé cependant par un rendement et une puissance massique faibles. Mais les systèmes thermomécaniques ne peuvent satisfaire à la fois toutes les exigences précédentes. C'est pourquoi on s'oriente vers l'emploi de sources électrochimiques, qui suppriment les deux nuisances pollution et bruit et sont généralement très bonnes du point de vue du rendement global. Le principal écueil concerne le problème du stockage de l'énergie électrique. Bien que des progrès importants aient été obtenus avec les solutions classiques

  17. ANTIPSYCHOTICS REVERSE P-GLYCOPROTEIN-MEDIATED DOXORUBICIN RESISTANCE IN HUMAN UTERINE SARCOMA MES-SA/Dx5 CELLS: A NOVEL APPROACH TO CANCER CHEMOTHERAPY.

    Science.gov (United States)

    Angelini, A; Ciofani, G; Conti, P

    2015-01-01

    Multidrug resistance (MDR) mediated by P-glycoprotein (Pgp) remains one of the major obstacles to effective cancer chemotherapy. Several chemosensitizers have been used in vivo and in vitro to reverse MDR but have exhibited several unwanted side effects. Antipsychotics are often administered to treat psychiatric disorders such as delirium, anxiety and sleep disorders in cancer patients during chemotherapy. The present in vitro study, examined the effects of two common antipsychotic compounds, haloperidol and risperidone, and a natural compound such as theobromine on reversing MDR Pgp-mediated, to evaluate their potential use as chemosensitizing agents. The human doxorubicin (doxo) resistant uterine sarcoma cells (MES-SA/Dx5) that overexpress Pgp (100-fold), were treated with the antipsychotic alone (1, 10 and 20 μM) or in combination with different concentrations of doxo (2, 4 and 8 μM). The accumulation and cytotoxicity of doxo (MTT assay) and cellular GSH content (GSH assay) in comparison with verapamil, a well-known Pgp inhibitor, used as reference molecule were examined. It was found that the three compounds significantly enhanced the intracellular accumulation of doxo in resistant cancer cells, when compared with cells receiving doxo alone (p 30%) in resistant cells, when compared to untreated control cells (ptheobromine showed to be an effective Pgp inhibitor with the lowest toxicity.

  18. Ediciones en español de La Venida del Mesías en gloria y magestad de Manuel de Lacunza

    Directory of Open Access Journals (Sweden)

    Ramón Carles Gelabert-Santané

    2014-05-01

    Full Text Available Even before 'd just write the text of La Venida del Mesías en gloria y magestad, the book was already circulating in Italy, Spain and even in South America in the form of more or less authentic extracts, however, all the printed editions posthumous author. The impact of the work of Alfred-Félix Vaucher, and that in our bibliography we have seen. Print editions include two in 1812 printed in Spain, a third edition, almost identical to the first, printed in 1815 in Spain, a fourth edition in 1816 in London, a fifth edition in 1821 in Puebla, Mexico, in 1824 a sixth edition in Mexico, just one year later in 1825, a seventh edition in the same year appears also in Mexico, Paris sees the light eighth edition, and the ninth and final edition in Castilian, and considered the best print, is published in the City of London in 1826. in just fifteen years nine editions in Spanish from a theological work that sustains millenarianism, in an age of religious intolerance, can sustain that the Coming of Messiah in Glory and Majesty was a real bestseller with an impact on the biblical religious thought in his time of a magnitude that escapes us today.

  19. Méthodes de calcul pour la conception des systèmes de protection cathodique des structures longilignes Computing Methods for Designing Cathodic Protection Systemes for Elongate Stuctures

    Directory of Open Access Journals (Sweden)

    Roche M.

    2006-11-01

    Full Text Available Les différentes structures longilignes qu'utilise l'industrie des hydrocarbures sont, dans la plupart des cas, soumises à un système de protection cathodique par anodes sacrificielles ou par courant imposé. La conception de ces systèmes doit être basée sur l'étude de la variation du potentiel et de l'intensité le long de la structure causée par la chute ohmique. La méthode classique de calcul résoud couramment le cas des structures longilignes à diamètre constant traversant un terrain dont la résistivité est considérée comme constante sur toute la longueur. Dans le cas où la constitution de la structure varie, comme celui des casings de puits de forage, ou quand celle-ci traverse plusieurs types de terrain, le problème se complique. Nous proposons une méthode générale permettant de traiter rapidement tout problème de ce type, le nombre de tronçons n'étant pas limité. Cette méthode fait appel à des notions de facteur de réflexion et de résistance équivalente déjà exposées dans la littérature mais dont l'usage ne semble pas s'être répandu. The different elongate structures used by the hydrocarbon industry are, in most cases, subjected ta a cathodic protection system consisting of sacrificial anodes or an impressed current. Desings of such systems must be boséd on an analysis of variations in the potential and intensity along the structure as the result of the ohm drop. The conventional computing method commonly solves cases of elongote structures with a constant diameter, running through ground whose resistivity is considéred to be constant over the entire length. When the~nake-up of the structure varies, as is the case for borehole casings, or when it goes through several types of formations, the problem gets more complicated. We propose a general method for quickly dealing with any problem of this type, with no limit ta the number of lengths involved. This method makes use of reflection factor and

  20. ANÁLISIS DE UNA RED DE COOPERACIÓN DE PyMEs EN MISIONES, ARGENTINA: BENEFICIOS Y CARENCIAS PARA EL DESARROLLO LOCAL SOSTENIBLE

    Directory of Open Access Journals (Sweden)

    Juan Carlos, Michalus

    2012-06-01

    Full Text Available Se presenta un estudio de caso de una red de cooperación existente en la provincia de Misiones, Argentina, integrada por una Pequeña y Mediana Empresa (PyME elaboradora de té negro y un grupo de PyMEs de aserrado de madera, constituida a partir de la iniciativa particular del empresario tealero. El objetivo es identificar los beneficios del trabajo en cooperación y a su vez, poner en evidencia las carencias que existen cuando estos procesos no se realizan de manera planificada y orientada al desarrollo local sostenible.El estudio de caso que se expone constituye un caso único, contemporáneo; con relevamiento de datos en los establecimientos pertenecientes a la red de cooperación, entrevistas a empresarios y encargados de producción, que permitieron constatar los beneficios de la cooperación, entre los que figuran: aprovechamiento de residuos, generación de lazos de confianza entre empresarios y contribución al cuidado del medio ambiente. También se constataron las principales deficiencias que impiden la obtención de beneficios mayores, derivados de la carencia de un instrumental metodológico adecuado para implementar este tipo de emprendimientos cooperativos, entre los que se destaca: escaso aprovechamiento de recursos ociosos, ausencia de mejoras en procesos mediante innovaciones conjuntas, falta de participación de actores fundamentales y de orientación sistemática hacia el desarrollo local sostenible.

  1. Una Revisión Sistemática en los Marcos de Trabajo de Desarrollo Software en las MiPyMEs Productoras de Software

    Directory of Open Access Journals (Sweden)

    Antonio A. Aguileta

    2015-11-01

    Full Text Available Una revisión sistemática es considerada como un método o protocolo que permite sintetizar investigaciones científicas de diversas áreas, la Ingeniería de Software no es la excepción. En este artículo se presenta este protocolo aplicado en la búsqueda de publicaciones relacionadas con las adaptaciones a los marcos de trabajo de desarrollo de software llevadas a cabo en MiPyMEs desarrolladoras de software, en el período comprendido de 1995 al 2013, centrándose en tendencias, países y sectores que publican; así como en los modelos, metodologías, estándares, procesos técnicos, procesos de implementación y procesos de reúso del software. Los resultados obtenidos muestran que los países con mayor número de publicaciones sobre el tópico seleccionado son Estados Unidos y Reino Unido, que en su conjunto suman 21%; y que otros países suman el 79% restante. Se observa que el sector con mayor número de publicaciones es el sector educativo con 76%, seguido por los centros de investigación con 18% y el sector privado con el 6%. El modelo de procesos y la metodología más utilizados son CMMi con 33% e IDEAL con 22%, respectivamente. Los estándares más utilizados, con el 18% cada uno, son el ISO/IEC 15504 y CORBA; y los procesos del ciclo de vida del software mayormente abordados son: análisis de requisitos del sistema con un 33% y construcción con un 29%.

  2. Impuretés et systèmes corrélés. Des chaînes aux cuprates supraconducteurs

    Science.gov (United States)

    Bobroff, J.

    2005-01-01

    Impurities and correlated systems Discovery of high TC superconductors has opened the new field of strongly correlated fermions physics. In these compounds, mostly transition metal oxides, strong correlations between electrons affect sharply their electronic properties. In order to determine accurately these correlations and their possible link with superconductivity, we study the effect of local defects such as non magnetic impurities. In fact, in the more simple case of insulating spin chains and ladders, these impurities induce a staggered magnetism in their neighborhood which reveals the underlying electronic correlations. Similar effects are observed in high TC superconductors, using local probes such as nuclear magnetic resonance. These observations allow to get a better understanding of both normal and superconducting state of these oxides, both full of surprises. La découverte des supraconducteurs à haute température critique a ouvert la voie à une nouvelle physique, celle des fermions fortement corrélés. Dans ces systèmes, le plus souvent des oxydes de métaux de transition, les fortes corrélations entre électrons affectent profondément leurs propriétés électroniques et induisent de nouveaux états originaux : liquides de spins, supraconductivité, etc. Pour mesurer ces corrélations et ainsi déterminer leur lien éventuel avec la supraconductivité, nous proposons d'étudier l'effet de défauts ponctuels tels que des impuretés non magnétiques. En effet, dans le cas plus simple de chaînes ou d'échelles de spin isolantes, ces impuretés induisent dans leur voisinage immédiat un magnétisme alterné révélateur des corrélations électroniques. Des effets semblables sont observés dans les supraconducteurs à haute température critique, grâce à des sondes locales comme la résonance magnétique nucléaire. Ces observations permettent de mieux comprendre à la fois l'état normal et supraconducteur de ces oxydes, tous deux riches en

  3. Les deux journaux de José Santos Vargas (1814-1825. 1: Problèmes d'édition

    Directory of Open Access Journals (Sweden)

    1995-01-01

    Full Text Available La découverte du journal de guerre tenu par le guérillero José Santos Vargas a renouvelé nos connaissances sur l’histoire de la guerre d’indépendance dans le Haut Pérou. Cependant, le fait qu’il existe deux manuscrits différents de ce document, publiés tous deux par les soins de don Gunnar Mendoza, l’un en 1952 en Bolivie, l’autre en 1982 au Mexique, pose aux historiens des problèmes que les choix effectués par l’éditeur ont obscurcis. Cette première livraison d’un article qui devrait en comprendre deux remet en question la valeur scientifique de l’édition de 1982. LOS DOS DIARIOS DE JOSÉ SANTOS VARGAS. 1: PROBLEMAS EDITORIALES. El descubrimiento del diario de guerra redactado por el guerrillero José Santos Vargas ha renovado el conocimiento de la guerra de independencia en el Alto Perú. Pero el hecho de que existen dos manuscritos distintos de este documento, ambos publicados por don Gunnar Mendoza, uno en Bolivia en 1952 y otro en México en 1982, plantea a los historiadores problemas que las decisiones del editor han obscurecido. Esta primera entrega de un artículo que constará de dos, pone en tela de juicio el valor científico de la edición de 1982. THE TWO DIARIES OF JOSÉ SANTOS VARGAS. 1: PROBLEMS OF EDITION. The discovery of the diary of the guerillero leader José Santos Vargas add to our knowledge of the history of the independence war in the Alto Peru. However, the existence of two different manuscripts, both published by don Gunnar Mendoza, the first in Bolivia, 1952, the second in Mexico, 1982, present historians with problems that have been obscured by the editor’s choices. In this first part of the two parts article, we question the scientific value of the edition of 1982.

  4. Alternatives to imprisonment: opportunities and problems in Germany / Mesures alternatives à l’incarcération : opportunités et problèmes en Allemagne

    Directory of Open Access Journals (Sweden)

    Bahr Alexander

    2016-12-01

    Full Text Available L'articolo fornisce una breve panoramica sulla normativa tedesco in materia di misure alternative alla detenzione. Vengono successivamente presentati i dati statistici relativi agli istituti penitenziari tedeschi e gli autori riflettono sulle problematiche principali della situazione attuale delle carceri tedesche. Inoltre, sulla base di dati statistici e di esempi pratici, l'articolo presenta una panoramica complessiva sulle misure alternative in Germania e sullo stato dell’arte della ricerca. Infine, gli autori sottolineano il ruolo e la prospettiva delle vittime, arrivando alla conclusione che una serie di iniziative e di progetti sono già stati avviati, ma che è ancora troppo presto per poter giungere a delle conclusioni. Cet article donne un aperçu du cadre juridique allemand des mesures alternatives à l’incarcération. Des données statistiques sur les prison allemandes et sur les détenus sont ensuite présentées. Les auteurs s’interrogent sur certains des principaux problèmes liés à la situation actuelle des prisons allemandes. De plus, cet article donne un aperçu global des mesures alternatives en Allemagne par le biais de données statistiques et d’exemples concrets. S’ensuit l’état des évaluations scientifiques et de la recherche. Enfin, les auteurs valorisent le rôle et la perspective des victimes, toutefois dans leurs conclusions ils soulignent que nombreux sont les programmes et les initiatives déjà commencés, mais qu’il est cependant encore trop tôt pour dresser un bilan. The article provides a short overview on the German legal framework regarding alternatives to imprisonment. Then statistical data about German prisons and their inmates are presented and the authors reflect on some major problems of the contemporary situation in German prisons. Furthermore, the article gives a comprehensive overview on alternative measures in Germany by statistical data and examples from the practice. Then the state

  5. La tectonique panafricaine du secteur d’Igherm : implication des dômes extensifs tardi a post-orogeniques (Anti-Atlas Occidental, Maroc

    Directory of Open Access Journals (Sweden)

    Soulaimani, A.

    2005-12-01

    Full Text Available L’évolution tectonique tardi-orogénique panafricaine du secteur d’Igherm (Anti-Atlas occidental, Maroc se caractérise par l’exhumation des parties profondes paléoprotérozoïques à l’image des dômes extensifs. Elle est contrôlée par un détachement principal ductile de faible pendage et des détachements de fort pendage de type extensionnel qui succèdent à un raccourcissement régional de direction NW-SE. Le détachement principal subhorizontal, est souligné par des mylonites de faible degré métamorphique. Il sépare deux unités : l’unité inférieure (complexe métamorphique du Paléoprotérozoïque à comportement ductile et l’unité supérieure (Quartzites néoprotérozoïques du Supergroupe de l’Anti-Atlas à comportement fragile. Cette évolution coïncide avec la mise en place des bassins « supradétachement » du Supergroupe de Ouarzazate durant l’extension qui aurait débuté après le raccourcissement panafricain datés vers 650 Ma. L’évènement extensionnel peut être généralisé à tout l’Anti-Atlas occidental.La evolución tectónica tardi-orogénica panafricana del sector de Igherm (Anti-Atlas occidental, Marruecos se caracteriza por la exhumación de las partes profundas proterozoicas como domos extensivos. Está controlada por un despegue principal dúctil con poco buzamiento y despegues con alto buzamiento de tipo extensional que se sobreponen a un acortamiento regional de dirección NO-SE. El despegue principal subhorizontal viene marcado por milonitas con metamorfismo de grado bajo. Este accidente separa dos unidades : la unidad inferior (complejo metamórfico del Paleoproterozoico de comportamiento dúctil y la unidad superior (cuarcitas del neoproterozoico del Supergrupo del Anti-Atlas de comportamiento frágil. Esta evolución coincide con el origen de las cuencas de «supra-detachment» del Supergrupo de Ouarzazate durante la extensión que se habría producido después del acortamiento

  6. La trajectoire des symptômes dépressifs de l'enfance à l'adolescence et les cibles d'intervention préventive

    Directory of Open Access Journals (Sweden)

    Diane Marcotte

    2014-03-01

    Full Text Available Cette étude longitudinale s'intéresse à la trajectoire développementale des symptômes de dépression sur une période de cinq ans entre l'enfance et l'adolescence ainsi qu'à ses facteurs associés. À partir de l'analyse de courbes de croissance latente (Latent Growth Model-LGM, les résultats indiquent que les symptômes de dépression augmentent entre l'âge de 11-12 ans et 15-16 ans chez les filles, mais non chez les garçons. Cependant, pour chacun des sexes, la variance de la pente de la trajectoire reflète l'hétérogénéité des sous-groupes, révélant que les trajectoires varient chez les individus. Parmi les facteurs mesurés au temps 1 de l'étude, ceux qui sont le plus étroitement associés à la variation longitudinale des symptômes dépressifs sont le soutien des amis pour les deux genres et l'âge pour les filles. Plusieurs facteurs sont également associés à la présence de dépression au temps initial. Les cibles d'intervention pour une prévention universelle de la dépression chez les jeunes sont ensuite discutées et un programme visant le développement de facteurs de protection chez les adolescents est présenté

  7. Séries de problèmes dans une tradition d'enseignement des mathématiques en Hongrie au 20e siècle1

    Directory of Open Access Journals (Sweden)

    Gosztonyi Katalin

    2015-01-01

    Full Text Available Dans cet article, nous discutons l'intérêt d'étudier des « séries de problèmes » pour la caractérisation d'une tradition d'enseignement des mathématiques en Hongrie au 20e siècle. Dans la partie 1, nous résumons le contexte historique et les principes partagés dans cette tradition sur les mathématiques et leur enseignement. Dans la partie 2, nous étudions plus en détail un texte d'un membre de cette communauté, un extrait du Jeux avec l'infini de Rózsa Péter, qui nous servira de modèle pour les analyses ultérieures. Dans la partie 3, nous présentons différents documents liés à la réforme de l'enseignement des mathématiques dirigée par Tamás Varga dans les décennies 1960 et 1970, cette réforme étant considérée comme une étape significative dans l'histoire de cette « tradition hongroise ». Nous tenterons de montrer qu'une réflexion sur la mise en ordre des problèmes joue un rôle crucial dans la structuration de ces textes divers, écrits souvent dans une forme narrative et quasi-littéraire ; et que l'étude des « séries de problèmes » présentées dans ces textes peut apporter une contribution importante à la caractérisation de la tradition en question.

  8. Avifauna del bosque mesófilo de montaña del noreste de Hidalgo, México Avifauna of the tropical montane cloud forest of northeastern Hidalgo, Mexico

    Directory of Open Access Journals (Sweden)

    Miguel Angel Martínez-Morales

    2007-06-01

    Full Text Available Este trabajo presenta los resultados de un inventario avifaunístico realizado de 1997 a 1999 en fragmentos de bosque mesófilo de montaña del noreste de Hidalgo, México. Se registraron 41 familias y 181 especies de aves mediante observaciones visuales y auditivas en 2 057 puntos de conteo, lo que representó el 98% de las especies esperadas en el área de estudio, para el período y método de muestreo utilizado. Se detectaron 16 especies restringidas al bosque mesófilo, 11 endémicas de México y 3 de distribución restringida. Adicionalmente, con base en la legislación mexicana vigente, 28 de las especies registradas están incluidas dentro de alguna categoría de riesgo de conservación. Esta comunidad de aves estuvo dominada por especies de aves pequeñas, raras (poco abundantes y residentes. Es probable que las más vulnerables de sufrir extinciones locales sean las especies raras y restringidas al bosque mesófilo, donde están incluidas las 3 especies de distribución restringida (Dendrortyx barbatus, Glaucidium sanchezi y Cyanolyca nana. La avifauna del bosque mesófilo de esta región incluye al 40% de la avifauna estatal, lo que destaca la relevancia de este tipo de vegetación y una urgente necesidad de establecer estrategias de manejo para su conservación.This study shows the results of bird census carried out from 1997 to 1999 in cloud forest fragments of northeastern Hidalgo, Mexico. Forty-one bird families and 181 species were recorded through visual and acoustic detections in 2 057 point counts. This represents 98% of the expected species richness for the sampling period and method used. Sixteen species restricted to the cloud forest were detected, 11 Mexican endemic species, and 3 restricted-range species were recorded. Additionally, 28 species are included within some category of conservation concern according to the present Mexican legislation. This bird community was dominated by small, rare (low in abundance, and

  9. Gestão democrática e autonomia da escola no período de 1974-75: as ambiguidades de um processo na perspectiva do Movimento de Esquerda Socialista (MES

    Directory of Open Access Journals (Sweden)

    Carlos V. Estêvão

    2004-01-01

    Full Text Available This paper starts with a reflection about the State role and the centrality of education for social and educational change in the revolutionary times that follow the 25th April 1974; in a second moment, and from the perspective of a left movement (MES, expressed in its newspaper, the ambiguities of the democratic management of Portuguese schools are made visible. Next, the analysis focuses the autonomy concept and its centrality in this Movement discourse as well as the critiques and proposals for the organizational configuration of the democratic management model. Finally, it will be referred the students fight in the educational terrain, namely at the classroom level.

  10. Análisis empírico de la aplicación del modelo de modernización de la gestión para organizaciones en PyMEs colombianas

    Directory of Open Access Journals (Sweden)

    Rafael Pérez Uribe

    2013-08-01

    Full Text Available Esta publicación presenta tres grandes resultados de la aplicación del Modelo de Modernización para la Gestión de Organizaciones – MMGO- en 127 PyMEs colombianas: el análisis estadístico y psicométrico de los instrumentos utilizados en el MMGO, la evidencia empírica de la aplicación del Modelo en las 127 empresas y las recomendaciones para desarrollar una gestión empresarial de excelencia para la PyME colombiana.

  11. Two Phase Flow in Nodular Systems: Laboratory Experiments Écoulements polyphasiques dans des systèmes nodulaires : expériences de laboratoire

    Directory of Open Access Journals (Sweden)

    Alhanai W.

    2006-11-01

    chelle sont de même nature qu'à l'échelle locale. - Dans le cas d'un système nodulaire, la désaturation quasi-statique peut conduire à une inversion du rôle des régions (la région initialement la plus perméable peut devenir la région la moins perméable et inversement. - Il y a une grande différence de comportement entre les deux systèmes nodulaires suivants : système I où la région oméga constitue le nodule et la région êta la région continue, et système II où la région oméga est la région continue et la région êta constitue le nodule.

  12. Collaborative crew performance in complex operational systems: L'Efficacité du travail en équipage dans des systèmes opérationnel complexes

    National Research Council Canada - National Science Library

    1999-01-01

    .... As we progress towards the next millennium, complex operations will increasingly require consideration and integration of the collaborative element wherein crew performance becomes a critical factor for success...

  13. Flux d'énergie dans des systèmes d'élevage laitiers contrastés : élaboration d'indicateurs et analyse de la diversité inter et intra-territoire

    OpenAIRE

    Vigne, Mathieu

    2012-01-01

    Le doublement futur de la demande mondiale en produits laitiers nécessite de concevoir des systèmes plus productifs mais également écologiquement plus durables. Les objectifs de la thèse étaient i) d'évaluer l'intérêt de la prise en compte de l'ensemble des énergies mobilisées dans un système d'élevage (énergie fossile, énergie calorifique contenue dans les produits, énergie liée au travail humain et animal et énergie solaire) à travers des méthodes existantes ou originales pour développer de...

  14. Amélioration de la résilience de systèmes spatiaux soumis à des menaces : vers des réseaux de satellites autonomes

    OpenAIRE

    Cristini, Frédéric

    2014-01-01

    un environnement spatial naturel hostile, les systèmes spatiaux de télédétection traditionnels, monolithiques et téléopérés depuis le sol, demeurent vulnérables face à un nombre croissant de menaces émergentes issues de l’environnement spatial artificiel (armes antisatellites, débris). Plutôt que de chercher à protéger physiquement les satellites, nous proposons d’adopter une stratégie fondée sur le concept de résilience, qui traduit la capacité d’un système à poursuivre sa mis...

  15. Passer de la connaissance à l'action pour résoudre des problèmes complexes : aperçu de l'examen de neuf cas internationaux

    Directory of Open Access Journals (Sweden)

    B. L. Riley

    2015-01-01

    Full Text Available Introduction: La résolution de problèmes complexes du type de la prévention des maladies chroniques présente des défis particuliers pour la création et le transfert de connaissances, soit le passage de la connaissance à l'action (PCA. Les approches axées sur le PCA respectant les principes de la pensée systémique sont jugées prometteuses,mais les stratégies pour les mettre en place ne sont pas bien comprises. Dans cet article, nous présentons les résultats d'une analyse de plusieurs approches systémiques axées sur le PCA dans le but de déterminer comment optimiser leur mise en œuvre et leur efficacité. Méthodologie: Un groupe consultatif de cinq personnes a choisi neuf initiatives représentant une diversité d'enjeux et de formes organisationnelles. Pour chaque cas, l'information a été recueillie à partir de documents et par l'entremise d'entrevues téléphoniques avec des personnes-ressources de chaque organisation. Aprés la vérification des descriptions de cas, une analyse inductive a été effectuée à la fois pour chaque cas et entre les cas. Résultats: Ces cas ont révélé cinq lignes directrices permettant de passer de la conception de systémes de PCA à leur mise en œuvre : établir et entretenir des relations, coproduire et organiser les connaissances, créer des boucles de rétroaction, les encadrer comme des interventions systémiques plutôt que comme des projets et envisager des variations dans le temps et selon les lieux. Conclusion: Les résultats de cette analyse contextuelle constituent un départ modeste pour transformer en résultats concrets les concepts systémiques de PCA. L'utilisation des stratégies mises au jour pourrait améliorer le PCA pour la résolution de problèmes complexes en matière de santé publique. Les stratégies elles-mêmes pourront bénéficier de l'évolution d'une science visant à comprendre l'adaptation et l'apprentissage constant des politiques et des interventions

  16. Programa especial del ciclo Por la radio en reclamo de la aparición con vida de Jorge Julio López : A un mes de haber sido visto por última vez en La Plata

    OpenAIRE

    López, Jorge Julio; Vénere, Virginia; Cardoso, Miriam; Toschi, Damián; Gil Lavedra, Ricardo; Bergman, Miriam; Yanzón, Rodolfo; Derotier de Cobacho, Sara; Eloy, Nilda; Mosquera, Alejandro; Ragendorfer, Alejandro; Vedio, Marta

    2006-01-01

    Con motivo de cumplirse el primer mes de la búsqueda y reclamo de aparición de Jorge Julio López, se emite un programa especial del ciclo Por la radio, programa periodístico de la segunda mañana de Radio Universidad, conducido por Virginia Vénere, Damián Toschi y Miriam Cardoso, con producción periodística de Virginia Ilariucci. Se realizan entrevistas y se reproducen testimonios en torno a la desaparición del testigo del juicio por crímenes de lesa humanidad contra el ex jefe de la Policía B...

  17. Dimensionnement des systèmes photovoltaïques autonomes basé sur le concept d'utilisabilité horaire. Application au sud Algérien

    OpenAIRE

    BOUZID, ZAKARIA

    2014-01-01

    Dans le but de diminuer le coût d'installation et de production d'énergie électrique par voie photovoltaïque, plusieurs études et travaux sont menés autour du dimensionnement des systèmes PV. Dans notre travail, l'étude qu'on a réalisé était dirigé dans ce sens, et cela en prenant en compte trois paramètres importants dans une installation photovoltaïque : la surface et le rendement des panneaux PV et la capacité des batteries. La méthode de dimensionnement et d'optimisation ut...

  18. Application des techniques de diffusion de la lumière des rayons x et des neutrons à l'étude des systèmes colloïdaux. Deuxième partie : étude des différents systèmes : polymères en solution à l'état solide, solutions micellaires, systèmes fractals Application of Light, X-Ray and Neutron Diffusion Techniques to the Study of Colloidal Systems. Part Two: Research on Different Systems: Polymers in Solution in the Solid State, Micellar Solutions, Fractals Systems

    Directory of Open Access Journals (Sweden)

    Espinat D.

    2006-11-01

    Full Text Available Cet article fait suite à la première partie (Revue Inst. Franç. du Pétrole, vol. 45, n°6, novembre-décembre 1990 concernant l'application des techniques de diffusion de la lumière, des rayons X et des neutrons à l'étude des systèmes colloïdaux et plus précisément à la présentation théorique des trois méthodes. L'objet de cette deuxième partie est la présentation non exhaustive de quelques domaines d'applications. Nous nous attacherons tout particulièrement à présenter les potentialités des méthodes pour la caractérisation de systèmes colloïdaux ou divisés rencontrés dans de nombreuses branches d'activité de l'industrie pétrolière. Nous aborderons dans une première partie les solutions polymériques et colloïdales. En particulier nous nous attarderons sur l'importance des techniques de diffusion pour la caractérisation des polymères en solution et des solutions micellaires. Nous verrons également quelles informations la diffusion centrale peut apporter sur la macrostructure des polymères cristallisés ou amorphes à l'état solide. De nombreux systèmes présentent une structure de type fractal ; après présentation de quelques exemples, nous montrerons que les méthodes de diffusion peuvent apporter certaines informations sur ces matériaux, notamment la dimension fractale. This article is the second one (the first one was published in Revue de l'Institut Français du Pétrole No. 6, NovemberDecember 1990 concerning the application of techniques of light scattering, X rays and neutrons to the analysis of colloidal systems and more specifically to the theoretical description of the three methods. The aim of this second part is to make a nonexhaustive description of several fields of applications. A special effort is made to describe the potential of these methods for characterizing colloidal or divided systems encountered in a great many activities involving the petroleum industry. The first part of this

  19. Analyse des stratégies d’apprentissage dans une méthode d’apprentissage par problèmes : le cas d’étudiantes en soins infirmiers

    Directory of Open Access Journals (Sweden)

    Caroline Larue

    2009-09-01

    Full Text Available Plusieurs institutions d’enseignement supérieur ont adopté l’apprentissage par problèmes comme méthode pédagogique, mais peu d’études, à notre connaissance, se sont intéressées à décrire les stratégies utilisées par les étudiants dans un curriculum d’apprentissage par problèmes. Le but de cette recherche est justement l’étude de ces stratégies. L’analyse des verbatims obtenus auprès de 31 étudiantes1 de soins infirmiers a permis de dégager un ensemble de stratégies et d’en évaluer la fréquence. Les résultats suggèrent que les étudiantes utilisent davantage des stratégies de traitement en surface de l’information que des stratégies de traitement en profondeur malgré des indications voulant que l’utilisation d’une approche en profondeur soit associée à une meilleure réussite au cours.Several higher education institutions have adopted problem-based learning as an educational method. But, as far as we know, very few studies try to describe the strategies which are used by students in order to succeed in a problem-based learning context. The purpose of this research is to study those strategies. The analysis of the verbatim obtained from 31 nursing students uncovered the main strategies and their respective frequency. The results suggest that the students are more likely to use strategies based on surface treatment of the information than in-depth learning strategies. This preference is maintained even though they were told that in-depth learning strategies increase their academic achievements.

  20. Collaborative crew performance in complex operational systems: L'Efficacité du travail en équipage dans des systèmes opérationnel complexes

    National Research Council Canada - National Science Library

    1999-01-01

    Contains the proceedings of the first RTO Human Factors and Medical Panel (HFM) Symposium, held in Edinburgh, Scotland, April 20-22, 1998, including the Technical Evaluation Report and Keynote Addresses...

  1. Un modelo explicativo de los niveles de adopción de comercio electrónico en MiPyMes de Córdoba, Argentina

    OpenAIRE

    Alderete, María Verónica; Jones, Carola; Motta, Jorge; Gonzalez Kriegel, Bernardo

    2014-01-01

    En este trabajo se pretende explicar los factores que simultáneamente inciden en el nivel de adopción del comercio electrónico para una muestra de 119 Micro, Pequeñas y Medianas (MiPyME) empresas de Córdoba, Argentina. Para ello, se aplica un modelo de regresión Probit ordenado. Se toma como referencia el estudio exploratorio-descriptivo de Jones, Alderete y Motta (2013) que identifica los principales factores relacionados con la adopción del comercio electrónico, entre los cuales se desta...

  2. La lógica interna y los dominios de acción motriz de las situaciones motrices de expresión (SME (The internal logic and action domain of motor skills in motor expression situations (MES

    Directory of Open Access Journals (Sweden)

    Marco Antonio Coelho Bortoleto

    2011-01-01

    communicative coding (language body, and its maximum specialization is constituted by the artistic practices (scenic body. Therefore, the expressive dimension is implicit in every motor practice and explicit in motor expression situations in which the practical effectiveness of the action is subject to its expressive effectiveness. The present essay intends to reveal the motor goal and the dominant features that characterize the internal logic of the motor expression situations (MES. Once recognized the structural features that express this class of motor situations, the article proposes to locate them in the variety of motor action domains proposed by Parlebas (2001. The reflections presented in this article indicate that the MES extend from those in which the goal is the pure pattern of the movement by itself – in which the actions are the message per se (poetic function – to those situations in which the pattern refers to a subject, an external reference (referential function, covering a wide range of practices that goes from spontaneity to maximum coding; motor situations characterized by an intentional communicative expression (otherness. Moreover, the article highlights that the MES may have a cooperative psychomotor and/or sociomotor logic, and may be developed both in stable and unstable (with an informational uncertainty environments. For this reason, these practices may take place in the eight subdomains of the motor practice classification devised by Parlebas. Finally, considering their expressive nature, it is observed the need to develop a specific subdomain to these practices, one that allows them to be gathered and distinguished from other ones.

  3. Optimisation de stratégies de gestion des batteries au plomb utilisées dans les systèmes photovoltaïques

    OpenAIRE

    Karoui , Fathia

    2007-01-01

    Batteries used in photovoltaic systems are subjected to penalizing operating conditions due to the intermittency of the solar resource. Their effects may be reduced by the optimisation of energy management strategies. This study deals with the pulse charge of lead acid batteries, the most used ones for this application. The effects of this charge mode are shown both on experimental cells and commercial batteries. The influence of the parameters, frequency, duty cycle and charge factor, on the...

  4. Systèmes de surveillance de la fièvre jaune en Afrique : rôle des centres OMS et place de la surveillance entomologique

    OpenAIRE

    Thonnon, J.; Mathiot, C.; Fontenille, Didier

    1998-01-01

    WHO Collaborating Centers, or (by default) designated national laboratories, intervene at two levels in the surveillance of yellow fever : (1) upstream, through knowledge and analysis of risk factors linked to vectors and populations, including : collection of entomological data (surveillance of the sylvatic cycle, Kédougou, Senegal), measuring the risk of an outbreak in urban areas (quantity of larvae of #Aedes aegypti$), measuring the national immunity to yellow fever among human population...

  5. Guide de pratique clinique pour les lésions cérébrales traumatiques légères et les symptômes persistants

    Science.gov (United States)

    Marshall, Shawn; Bayley, Mark; McCullagh, Scott; Velikonja, Diana; Berrigan, Lindsay

    2012-01-01

    Résumé Objectif Présenter les nouvelles lignes directrices sur la prise en charge des lésions cérébrales traumatiques légères (LCTL) et les symptômes persistants post-commotion (SPPC) afin de renseigner et d’orienter les médecins qui prennent en charge des patients qui se remettent d’une LCTL. Qualité des données On a effectué une recherche des guides de pratique clinique existants portant sur les LCTL et une synthèse critique des ouvrages scientifiques évaluant le traitement des SPPC. Étant donné la rareté des conseils sur la prise en charge des SPPC dans les travaux sur les lésions cérébrales traumatiques, une deuxième recherche documentaire a été faite pour recenser les guides de pratique clinique et les synthèses critiques concernant la prise en charge de ces symptômes communs dans la population en général. On a convoqué des professionnels de la santé provenant de différentes disciplines et régions du Canada et de l’étranger à une conférence consensuelle d’experts pour examiner les lignes directrices et les données probantes existantes et élaborer un guide complet pour la prise en charge des LCTL et des SPPC. Message principal À l’aide d’un processus Delphi modifié, on a produit 71 recommandations portant sur le diagnostic et la prise en charge des LCTL et des SPPC. De plus, on a inclus dans le guide de nombreuses ressources et des outils pour faciliter la mise en œuvre des recommandations. Conclusion Un guide de pratique clinique a été élaboré pour aider les professionnels de la santé à fournir des soins fondés sur les données probantes et les pratiques exemplaires à la population complexe de personnes qui ont des SPPC à la suite d’une LCTL.

  6. L'introduction des agents pathogènes dans les écosystèmes aquatiques : aspects théoriques et réalités

    Directory of Open Access Journals (Sweden)

    BLANC G.

    1997-01-01

    Full Text Available La multiplicité des introductions ou translocations de poissons, mollusques ou crustacés s'est largement amplifiée dans les dernières décennies et s'est accompagnée de multiples introductions d'agents pathogènes dans les hydrosystèmes naturels. L'analyse de la diversité des sources de ces agents pathogènes montre que certaines voies sont encore largement sous-évaluées aujourd'hui. L'amélioration apportée aux méthodologies et aux techniques d'identification a récemment permis un progrès spectaculaire dans la traçabilité des agents pathogènes et dans l'analyse de leurs introductions. Elle apporte, en partie, les clarifications nécessaires pour tenter de faire le bilan des introductions mais pose nettement le problème du seuil de perception de l'intrus. Une revue de la littérature a permis de recenser environ une centaine d'introductions relativement récentes d'agents pathogènes dans les hydrosystèmes naturels européens. Les caractères biologiques lato sensu favorables à la naturalisation des agents pathogènes introduits sont présentés. La diversité et la non-prédictibilité des impacts consécutifs à ces introductions sont ensuite détaillées à la lumière des études de terrain et de l'écologie théorique de la relation hôte-pathogène. Un cadre conceptuel d'analyse de risque est succinctement délimité pour évaluer ces introductions et des recommandations sont proposées.

  7. Determinantes del acceso al crédito de PyMES industriales argentinas. Descomposición espacial en el período 2004-2014

    Directory of Open Access Journals (Sweden)

    Carlos Matías Hisgen

    2017-10-01

    Full Text Available El presente trabajo analiza los factores determinantes del acceso al crédito bancario para las empresas industriales pyme en Argentina. El objetivo principal es identificar los factores que mayor incidencia ejercen en la probabilidad de una empresa de obtener financiamiento bancario, así como también evaluar la existencia de heterogeneidades a nivel regional en la incidencia de los mencionados factores. Para ello se analiza empíricamente el fenómeno del acceso al crédito bancario para el período comprendido entre 2004 y 2014, en base a una muestra de empresas pyme industriales argentinas, provista por la Fundación Observatorio Pyme. La metodología empleada comprende el análisis de regresión para datos de panel, incluyendo estimadores lineales y no lineales, de efectos aleatorios, de promedios agrupados y de efectos entre grupos. Como conclusión general se obtiene que las variables de escala se encuentran entre las más relevantes a nivel agregado a lo largo de todo el periodo, indicando que a mayor tamaño de la empresa, mayores probabilidades de acceder al crédito. Ciertos parámetros de desempeño como el uso de la capacidad instalada y la cualidad de inversora resultan también muy influyentes. Finalmente, el acceso al crédito presenta heterogeneidad en términos regionales, siendo la región del Norte del país la que sufre mayores desventajas

  8. Crioterapia no pos-parto: tempo de aplicacao e mudancas na temperatura perineal

    Directory of Open Access Journals (Sweden)

    Adriana Amorim Francisco

    2013-06-01

    Full Text Available Estudo descritivo com dados de dois ensaios clínicos realizados em 2008 e 2009 em uma maternidade de uma instituição filantrópica da cidade de São Paulo. Teve como objetivo descrever a temperatura perineal após a aplicação de bolsa de gelo no pós-parto normal. Três grupos com 38 puérperas cada (n=114 receberam aplicação perineal de bolsa de gelo entre 2 e 48h após o parto. Os achados indicaram que com 10 min de crioterapia as médias da temperatura perineal atingiram de 13,3 a 15,3oC, com pequena redução de temperatura ao final de aplicações de 15 e 20 minutos (2,4 e 2,7o, respectivamente. Após resfriamento por 10 min., as mulheres referiram frio e alívio e, depois de 15 a 20 min., dormência e anestesia local. Conclui-se que 10 minutos de aplicação foram suficientes para reduzir a temperatura perineal aos níveis recomendados para analgesia (10-15oC.

  9. Crioterapia no pos-parto: tempo de aplicacao e mudancas na temperatura perineal

    OpenAIRE

    Adriana Amorim Francisco; Sonia Maria Junqueira Vasconcellos de Oliveira; Lucila Coca Leventhal; Caroline de Souza Bosco

    2013-01-01

    Estudo descritivo com dados de dois ensaios clínicos realizados em 2008 e 2009 em uma maternidade de uma instituição filantrópica da cidade de São Paulo. Teve como objetivo descrever a temperatura perineal após a aplicação de bolsa de gelo no pós-parto normal. Três grupos com 38 puérperas cada (n=114) receberam aplicação perineal de bolsa de gelo entre 2 e 48h após o parto. Os achados indicaram que com 10 min de crioterapia as médias da temperatura perineal atingiram de 13,3 a 15,3oC, com peq...

  10. Prevalencia de depresión posparto en puérperas adolescentes y adultas

    OpenAIRE

    Molero,Katherine L; Urdaneta Machado,José Ramón; V,Charles; Baabel Zambrano,Nasser; Contreras Benítez,Alfi; Azuaje Quiroz,Estefany; Baabel Romero,Nadia

    2014-01-01

    Objetivo: Comparar la prevalencia de depresión postparto (DPP) entre puérperas adolescentes y adultas atendidas en el Servicio de Obstetricia y Ginecología del Hospital "Dr. Manuel Noriega Trigo", en San Francisco, Estado Zulia, Venezuela. Métodos: Investigación comparativa con diseño no experimental, transeccional, de casos y controles, que incluyó una muestra de 100 mujeres en puerperio tardío, divididas en dos grupos pareados de 50 adolescentes (casos) y 50 adultas (controles); las que fue...

  11. European Geothermal Drilling Experience. Problem Areas and Case Studies L'expérience du forage géothermique en Europe. Nature des problèmes et études de cas

    Directory of Open Access Journals (Sweden)

    Baron G.

    2006-11-01

    . Current geothermal drilling practice in Europe is illustrated by three typical case studies. En Europe Occidentale, le forage géothermique est resté longtemps limité au seul champ géothermique de Larderello en Italie pour la production de vapeur sèche. Au cours des dernières années, une expérience plus large s'est accumulée à la suite de l'intensification des programmes d'exploration et de développement entrepris pour évaluer et produire en parallèle les ressources géothermiques haute et basse enthalpies. Un échantillonnage d'une quarantaine de puits indique les sources des problèmes. 1. Forage géothermique basse enthalpie Par suite de situations similaires - système d'eau chaude s'écoulant dans des formations sédimentaires à des tem-pératures s'étalant de 40 à 140 °C et des profondeurs s'étageant de 1000 à 3500 m - la technologie est ici fortement liée à la pratique du forage des puits à huile et à gaz. Cependant, des problèmes spécifiques demeurent dans le domaine de la reconnaissance des réservoirs multiples et de la complétion des puits au niveau de la production et de la réinjection, particulièrement dans les séries fluvio-deltaïques faiblement consolidées amenant des problèmes de contrôle des venues de sables et de gonflement des argiles. Des travaux d'expertise sont nécessaires en vue de diminuer les coûts, d'assurer des capacités de production élevées, de longues durées d'exploitation, des frais de maintenance minimaux compatibles avec l'économie et l'absence de moyens convenables pour les travaux de reprise de puits. 2. Forage géothermique haute enthalpie Le forage d'exploration combine, en langage courant, le forage de recherche et les investigations plus profondes sur les champs connus. Les pertes de circulation, la corrosion des trains de tiges, les tubages, les boues de forage et les cimentations et la maîtrise de la déviation constituent les difficultés les plus fréquemment rencontrées dans les

  12. Banking of environmental samples for short-term biochemical and chemical monitoring of organic contamination in coastal marine environments: the GICBEM experience (1986-1990). Groupe Interface Chimie Biologie des Ecosystèmes, Marins.

    Science.gov (United States)

    Garrigues, P; Narbonne, J F; Lafaurie, M; Ribera, D; Lemaire, P; Raoux, C; Michel, X; Salaun, J P; Monod, J L; Romeo, M

    1993-11-01

    The GICBEM (Groupe Interface Chimie Biologie des Ecosystèmes Marins) program consists of an evaluation of the ecosystem health status in the Mediterranean Sea mainly based on chemical and biochemical approaches. Specific chemical contaminants (polycyclic aromatic hydrocarbons (PAH), polychlorobiphenyls (PCB), heavy metals) in waters, sediments, and related biotransformation indicators in target organisms (mussels, fish) have been selected for a complete survey of the coastal waters. In order to provide an appropriate sampling program for standardization for each sampling cruise, various aspects have been studied: (a) parameters for the choice of the sample sites; (b) ways of collection the samples (waters, sediments, marine organisms); and (c) preparation of the samples for a short term storage on board ship and for further analyses in the ground laboratory. Methods of preparation and storage of the samples are described and could be used to initiate an environmental banking program including both possible retrospective analyses of chemical pollutants and biochemical indicators. Moreover, the correlation between chemicals (PAH) and biochemical (mixed function oxygenase activities) parameters has been studied and this demonstrates the capability of the enzyme activities as reliable pollution biomarkers.

  13. Comportamiento espacio-temporal de la nube estratocúmulo, productora de niebla en la costa del desierto de Atacama (21° lat. S., 70° long. W., durante un mes de invierno y otro de verano

    Directory of Open Access Journals (Sweden)

    Martín Farías Salvador

    2012-02-01

    Full Text Available Se muestran los resultados de la utilización de imágenes satelitales GOES, cada 90 minutos, para estudiar el comportamiento espacio-temporal de la nube estratocúmulo, productora de niebla advectiva, en un sector costero del desierto de Atacama. Este potencial recurso hidrológico, muy influyente en los ecosistemas de desierto, se investiga además con la intención de abastecer de agua potable a pequeños poblados rurales, para agricultura, bebederos en predios ganaderos y reforestación. A través de la comparación del comportamiento de este tipo de nube, entre un mes de invierno y otro de verano, se determinan sus ciclos diario y mensual, la frecuencia de su presencia, los corredores por donde penetra desde el océano hacia el interior, potenciales lugares para captación de agua y una gran diferencia existente entre los meses seleccionados.

  14. Analyse de systèmes de production au sein du périmètre irrigué du Tadla (Maroc

    Directory of Open Access Journals (Sweden)

    Parfonry, R.

    1990-01-01

    Full Text Available Farming systems analysis in the irrigated area of Tadla - Morocco. The project "Survey of the soils under irrigation and drainage" executed in one of the 9 areas irrigated of Morocco (The Tadla is the purpose of taking stock, with the help of observations, measures and tapping of available data, of a system of develop land in cruising speed. It cornes forward to determinate "outstanding factors of a develop land with irrigation" in order to estimate the efficiency. The objectives were distributed among the 4 following subjects : Survey of the soils Farming systems Irrigation and drainage Irrigations forecast. This publication achieves the synthesis of the enquiries collected together by the analysis of the farming systems.

  15. Factores para el estudio de la relación entre el grado de control familiar y el desempeño organizacional de las MIPyMEs familiares en el Área Metropolitana de Monterrey

    OpenAIRE

    Armando Pena Hinojosa; Joel Mendoza Gomez

    2012-01-01

    The motors that move and drive the economies and societies of any country are the strength of the companies and might of the owners. At present, the importance of familyowned micro, small and medium sized companies is well known within the economies of the different Latin American and Caribbean countries; although, it is impossible to quantify exactly, the MSMEs are a key component in the contribution of economic growth, competitiveness, innovation, and in the generation of employment in any ...

  16. Les ressorts de lʹinspiration poétique dans les poèmes de Paul Éluard (1895-1952

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    Ahmed Abed Abbas

    2017-08-01

    Full Text Available Paul Eluard is one of the most distinguished poets in the twentieth century. He is the poet of love, and the poet of the French resistance against the Nazi's occupation. He appeared during the age emerging different trends in literature and art. At his time the surrealism was the most notable trend but he was distinguished with his poetic style. The present study which entitled "Les ressorts de l'inspiration poetique dans les poemes de Paul Eluard(1895-1952" "The Circumstances of the Poetic Inspiration in Paul Eluard's Poems" deals with the conditions behind his poetic creativity especially for those poems he writes to his three wives who toke part of his literary and political life. His literary production is divided into three stages each stage is related to one of his wives: Gala, Nush, and Dominique. These three wives are considered his muse. The research focuses on his role in the struggle against the Nazi's occupation to France especially his poem (Freedom and his international role in poetry and politics. Poetry, according to Eluard, takes personal, public, and humanistic dimensions as a result to social and ideological factors and his poetry goes beyond the limits of expressing his personal concerns to be global concerns.

  17. HerMES: The rest-frame UV emission and a lensing model for the z = 6.34 luminous dusty starburst galaxy HFLS3

    International Nuclear Information System (INIS)

    Cooray, Asantha; Calanog, Jae; Casey, C. M.; Ma, Brian; Osage, W. A.; Wardlow, Julie L.; Bock, J.; Bridge, C.; Burgarella, D.; Bussmann, R. S.; Clements, D.; Conley, A.; Farrah, D.; Fu, H.; Gavazzi, R.; Ivison, R. J.; La Porte, N.; Lo Faro, B.; Magdis, G.; Oliver, S. J.

    2014-01-01

    We discuss the rest-frame ultraviolet emission from the starbursting galaxy HFLS3 at a redshift of 6.34. The galaxy was discovered in Herschel/SPIRE data due to its red color in the submillimeter wavelengths from 250 to 500 μm. Keck/NIRC2 K s -band adaptive optics imaging data showed two potential near-IR counterparts near HFLS3. Previously, the northern galaxy was taken to be in the foreground at z = 2.1, while the southern galaxy was assumed to be HFLS3's near-IR counterpart. The recently acquired Hubble/WFC3 and Advanced Camera for Surveys (ACS) imaging data show conclusively that both optically bright galaxies are in the foreground at z < 6. A new lensing model based on the Hubble imaging data and the millimeter-wave continuum emission yields a magnification factor of 2.2 ± 0.3, with a 95% confidence upper limit on the magnification of 3.5. When corrected for lensing, the instantaneous star formation rate is 1320 M ☉ yr –1 , with the 95% confidence lower limit around 830 M ☉ yr –1 . The dust and stellar masses of HFLS3 from the same spectral energy distribution (SED) models are at the level of 3 × 10 8 M ☉ and ∼5 × 10 10 M ☉ , respectively, with large systematic uncertainties on assumptions related to the SED model. With Hubble/WFC3 images, we also find diffuse near-IR emission about 0.5 arcsec (∼3 kpc) to the southwest of HFLS3 that remains undetected in the ACS imaging data. The emission has a photometric redshift consistent with either z ∼ 6 or a dusty galaxy template at z ∼ 2.

  18. Factores que influyen en el abandono temprano de la lactancia por mujeres trabajadoras Factors associated with short duration of breast-feeding in Mexican working women

    Directory of Open Access Journals (Sweden)

    Manuel Navarro-Estrella

    2003-08-01

    Full Text Available OBJETIVO: Identificar los factores maternos, laborales y de los servicios de salud que influyen en el abandono temprano de la lactancia materna en madres trabajadoras. MATERIAL Y MÉTODOS: Entre noviembre de 1998 y marzo de 1999 se efectuó un estudio transversal comparativo con madres derechohabientes del Instituto Mexicano del Seguro Social de Ensenada, Baja California, México. A 265 madres se les aplicó un cuestionario entre los tres y nueve meses posparto. Se distribuyeron en: grupo I: madres con abandono temprano de la lactancia materna; grupo II: madres que prolongaron la lactancia materna por más de tres meses. Para identificar los factores asociados con el abandono temprano de la lactancia materna, se utilizó regresión logística. RESULTADOS: El 42.3% (112 de las madres abandonaron temprano la lactancia materna. Los factores de riesgo fueron: tener conocimientos malos sobre lactancia materna, OR 5.97 (IC 95% 1.67-20.67, la ausencia del antecedente de haberla practicado en un hijo previo OR 2.98 (IC 95% 1.66-5.36, tener un plan de duración de la misma de 0 a 3 meses, OR 16.24 (IC 95% 5.37-49.12, y la falta de facilidades en el trabajo para efectuarla, OR 1.99 (IC 95% 1.12-3.56. CONCLUSIONES: Los principales factores asociados con el abandono temprano de la lactancia materna fueron maternos. El único factor laboral fue la ausencia de facilidades para amamantar. Es probable que la calidad de los conocimientos, la experiencia previa con ella y tener facilidades laborales influyan en la decisión de prolongarla.OBJECTIVE:To identify the maternal, work, and health services factors associated with a short duration of breast-feeding in working mothers. MATERIAL AND METHODS: A cross-sectional study was carried out between November 1998 and March 1999, among 265 mothers medically insured by (Instituto Mexicano del Seguro Social, IMSS Mexican Institute of Social Security, who completed a questionnaire when their babies were 3 to 9 months old

  19. Smoking cessation and associated factors during pregnancy Cese del consumo de tabaco durante el embarazo y factores asociados

    Directory of Open Access Journals (Sweden)

    Matías Torrent

    2004-06-01

    Full Text Available Objective: To examine smoking habits before and during pregnancy, as well as factors associated with smoking cessation, in three European settings. Methods: Women seeking antenatal care in Ashford (UK, Minorca and Barcelona (Spain were recruited to the Asthma Multicenter Infant Cohort Study (AMICS. Questionnaires inquiring into the smoking habits of each woman and her partner, demographic data, occupation, educational level, number of previous children, breast feeding, alcohol intake, and history of asthma and of other allergic diseases were completed during pregnancy and in the first year after delivery. Results: A total of 1 572 pregnant women were included in the three cohorts. Smoking prior to pregnancy was more common in Barcelona (46.2% than in Minorca (39.8% or Ashford (31.6%. Cessation rates during pregnancy also differed: 18% of women in Ashford, 20.4% in Minorca and 31.9% in Barcelona were still smoking during the first trimester. In a multivariate regression model, the factors showing a significant (negative association with smoking cessation during pregnancy were having older children, having a partner who smoked and starting smoking at a young age. Conclusions: Baseline smoking habits and changes in smoking habits during pregnancy significantly differed between the three communities studied. Women pregnant with their first child, those who had started smoking at a later age and those whose partners were non-smokers were more likely to stop smoking when pregnant.Objetivo: Describir el hábito tabáquico antes y durante el embarazo y los factores asociados con su cese con relación al embarazo en distintos entornos europeos. Métodos: Se ha incluido en el estudio a las mujeres captadas durante el embarazo para participar en el estudio AMICS (Asthma Multicentre Infant Cohort Study en Ashford (Reino Unido, Barcelona y Menorca (España. Se administró un cuestionario durante el embarazo y otro durante el primer año posparto, que inclu

  20. Applications des techniques de diffusion de la lumière, des rayons X et des neutrons a l'étude des systèmes colloïdaux. Troisième partie : caractérisation des microémulsions et des composés solides. Étude de différents systèmes d'intérêt industriel Application of Light, X-Ray and Neutron Diffusion Techniques to the Study of Colloidal Systems. Part Three: Microemulsions, Solid Materials, Liquids and Miscellaneous Systems with Industrial Uses

    Directory of Open Access Journals (Sweden)

    Espinat D.

    2006-11-01

    Full Text Available Cette troisième partie clôt une revue bibliographique concernant la caractérisation des systèmes colloïdaux par les techniques de diffusion (lumière, rayons X, neutrons (Rev. Inst. Franç. du Pétrole, Vol. 45, No 6, novembre-décembre 1990. Nous poursuivrons cette présentation en nous intéressant aux microémulsions. Après la présentation des informations que l'on peut obtenir sur les systèmes polymériques, les solutions micellaires ou les systèmes fractals, qui ont fait l'objet de multiples travaux, nous reviendrons sur les applications plus restreintes à des systèmes colloïdaux parfois moins bien définis et d'origine industrielle, telles les fractions lourdes des pétroles, les asphaltènes ou encore les additifs de lubrification. Les possibilités de la diffusion des rayons X et des neutrons à l'étude de matériaux solides seront présentées à travers la caractérisation des solides poreux et en particulier des catalyseurs. Nous terminerons cette présentation par les liquides purs ou les mélanges; les techniques de diffusion ont contribué fortement à la description des structures des phases liquides. This article is the second one (the first one was published in Revue de l'Institut Français du Pétrole No. 6, November-December 1990 concerning the application of techniques of light scattering, X rays and neutrons to the analysis of colloidal systems and more specifically to the theoretical description of the three methods. The aim of this second part is to make a nonexhaustive description of several fields of applications. A special effort is made to describe the potential of these methods for characterizing colloidal or divided systems encountered in a great many activities involving the petroleum industry. The first part of this article takes up polymer and colloidal solutions. Particular attention is paid to the importance of scattering techniques for characterizing polymers in solution and micellar solutions. A

  1. Vers une méthode de réglage expérimentale des commandes PID floues : application aux systèmes électromécaniques

    Science.gov (United States)

    Maussion, P.; Hissel, D.

    1998-08-01

    Electrical and electromechanical systems have to satisfy to more and more constrained specifications. Therefore, non-linear control structures must be spread out. Among them, fuzzy logic control can be one interessant and performant alternative. The main handicap of this kind of stucture resides in the fact that the tuning parameters are very numerous. In this paper, we first propose an on-site tuning strategy of this set of parameters in the case of a fuzzy proportionnal-integrative controller based on the experimental designs methodology and on a limited number of pre-defined closed-loop experiments. Then, a complete set of predetermined parameters for a fuzzy proportionnal-integrative-derivative controller will be given. These parameters have been optimized on a specified benchmark according to an IAE criterion. They are calculated like the Ziegler-Nichols or Broïda methodology on conventional controllers; that is, using a single open-loop step response to obtain a model of a first-order plus delay transfert function. Validity limits for this method are provided. Les systèmes électriques ou électromécaniques doivent satisfaire à des spécifications de plus en plus contraignantes qui nécessitent la mise au point de structures de commande non linéaires. Parmi celles-ci, la commande par logique floue constitue une alternative intéressante et performante. Son principal handicap réside dans le nombre très important de paramètres à régler. Dans cet article, nous nous proposons de systématiser ces réglages dans deux cas de figure. Tout d'abord nous utiliserons la méthodologie des plans d'expérimentations pour effectuer un réglage sur site d'un contrôleur flou de type proportionnel-intégral. Ce réglage sera obtenu en ne réalisant qu'un nombre limité d'essais expérimentaux en boucle fermée avec des combinaisons prédéfinies des paramètres à régler. La combinaison optimale de ces paramètres au sens d'un critère de type IAE (Intégrale de la

  2. Construire un jeu éducatif en ligne, Asthme : 1, 2, 3 … Respirez!, pour sensibiliser les jeunes du secondaire aux problèmes de l'asthme

    Directory of Open Access Journals (Sweden)

    Louise Sauvé

    2011-05-01

    Full Text Available Dans le cadre d’une étude financée par le Conseil de recherche en sciences sociales et humaines (CRSH, 2008-2011, nous examinons l’efficacité d’un jeu éducatif en ligne sur l’apprentissage cognitif (structuration des connaissances et affectif (changement d'attitudes. Construit à partir des règles du jeu de société Parchési auxquelles plusieurs adaptations ont été apportées, le jeu Asthme : 1, 2, 3… Respirez! a été conçu pour s'inscrire dans le programme d’éducation à la santé pour les élèves du secondaire IV et V, âgés entre 15 et 17 ans. Dans cet article, nous présenterons brièvement les problèmes associés à l’asthme au Québec et au Canada. Ensuite, nous expliciterons l'apport des jeux éducatifs sur la structuration des connaissances et le changement d’attitudes ainsi que les paramètres d'apprentissage utilisés pour construire le jeu. Enfin, nous décrirons comment le jeu a été construit et la mise à l'essai réalisée avec 40 élèves pour évaluer son design, sa lisibilité pédagogique et sa convivialité.

  3. Une nouvelle orientation dans l’enseignement supérieur au vietnam: de la mémoire à la résolution de problèmes

    Directory of Open Access Journals (Sweden)

    TRƯƠNG Quang Dũng

    2016-12-01

    Full Text Available L’enseignement supérieur traditionnel est essentiellement basé sur la transmission du savoir et occasionnellement sur celle du savoir-faire. Il se réclame donc des disciplines universitaires (mathématiques, physique, chimie, géologie.... dispensées dans les universités et grandes écoles. Or, la réussite professionnelle et sociale dans le monde moderne exige d’autres acquis plus probants que des connaissances pures. Plusieurs recherches récentes ont ainsi montré que la résolution de bien des problèmes requiert des qualités pragmatiques d’efficacité indispensables pour l’accomplissement d’un travail créatif. Résoudre un problème revient alors à apprendre à maitriser une démarche méthodique composée de plusieurs phases, depuis l’identification du problème jusqu’à sa solution finale en passant par l’analyse judicieuse des causes. Il faut également maîtriser l’utilisation d’outils conceptuels et Méthodologiques tels que, entre autres, la « loi de Pareto », le questionnement systématique et le brainstorming . Au Vietnam on peut espérer la mise en application de ces nouvelles orientations dans un enseignement supérieur qui doit absolument se fixer comme objectif d’améliorer la qualité du travail social pour répondre aux nouvelles exigences de développement du pays.

  4. La paridad cambiaria dólar/peso en la liquidez y rentabilidad de las MiPyMEs del sector de Confecciones en la ciudad de Cúcuta, años 2005-2008.

    Directory of Open Access Journals (Sweden)

    Liliana Marcela Bastos Osorio

    2013-03-01

    Full Text Available En este artículo se presentan los resultados de una investigación, de un proyecto de grado de la maestría en Gerencia de Empresas de la Universidad Experimental del Táchira (Venezuela, cuyo objetivo general fue determinar la relación de la paridad cambiaria dólar/peso en la liquidez y rentabilidad de las MIPYMES del sector de las confecciones en la ciudad de Cúcuta (2005-2008. Esta investigación fue de carácter descriptivo y correlacional, teniendo en cuenta datos contables, financieros y teorías financieras, las cuales permitieron determinar indicadores financieros que arrojaron los siguientes resultados: se presenta un proceso de revaluación del peso colombiano frente al dólar; se observa una aparente liquidez sustentada en altos inventarios; y la rentabilidad del sector es variable en los años de estudio y con tendencia a la disminución. Según la regresión lineal, aplicada entre estas variables, el comportamiento de la tasa de cambio del dólar solo afecta por el lado de la liquidez al indicador de la productividad del capital de trabajo; mientras que por el lado de la rentabilidad existen dos indicadores que presentan un alto grado de correlación con la tasa promedio del dólar. Para ello, se propone dos pasos para la ayuda al sector: una primera etapa es la realización de un diagnóstico del  mismo sector que contemple aspectos mesoeconómicos y financieros; y una segunda etapa es la creación de una asociación gremial de las MiPyMEs del sector de confecciones de Cúcuta.

  5. Interpréter la sériation des problèmes des Arithmétiques de Diophante : une forme de modélisation ?

    Directory of Open Access Journals (Sweden)

    Bernard Alain

    2015-01-01

    Full Text Available Dans cette étude on propose une réflexion méthodologique sur une première tentative de rendre compte de la progressivité des premiers problèmes arithmétiques contenus dans le recueil ancien des Arithmétiques du à Diophante d'Alexandrie. On résume le principe du cadre analytique que Jean Christianidis et moi-même avons bâti pour rendre compte de cette progressivité, en le rapportant au questionnement initial qui l'a motivé. On montre en outre que l'intérêt de cette interprétation réside au moins autant dans ses succès (exhiber une forme de progressivité qui n'est pas évidente a priori que dans ses limites, dont l'identification conduit à explorer et définir de nouvelles pistes d'interprétation. L'ensemble de ce processus est finalement interprété comme un processus de modélisation, au sens où l'entend Willard McCarty dans son étude Humanities Computing(2005. Cette explicitation conduit également à distinguer différentes formes de sérialité, notamment déclarative (explicitée par Diophante, et reconstruite (via les cadres analytiques proposés : l'effort de modélisation vise précisément à réduire l'écart entre ces deux types.

  6. Payments for Environmental Services: Can They Work? Systèmes de paiement pour services environnementaux : une solution efficace ? Le cas du Mexique Pago por Servicios Ambientales: ¿Pueden funcionar? El caso de México

    Directory of Open Access Journals (Sweden)

    Helena García Romero

    2012-06-01

    Full Text Available Payments for Environmental Services (PES Programs can be useful policy instruments for achieving conservation objectives through incentive mechanisms.  However, the success of such programs depends on the particular solutions that are given to political economy constraints and challenges. The Mexican case provides helpful lessons on this topic, in addition to design and implementation insights.The Mexican PES program has been in place since 2003.  It strives to protect well-conserved forests and to have a social impact through payments made to the most marginalized communities.  Nevertheless, its impact in terms of avoided deforestation is not very high. This is due to targeting failures that arise from an internal trade-off between social and conservation goals.  In order to align both objectives the continuous negotiation of goals and targeting mechanisms between the different stakeholders: government, bureaucracy, non-government organizations (NGOs, and local communities must be kept in mind. Understanding and anticipating this policy process can ensure the desirable outcomes of PES programs in terms of poverty alleviation and conservation.Les programmes de systèmes de paiement pour services environnementaux (PES - Payments for Environmental Services peuvent être des instruments d’intervention efficaces pour atteindre les objectifs en matière de conservation des écosystèmes grâce aux mesures d’incitation qu’ils englobent. La réussite de ce type de programmes dépend toutefois des solutions spécifiques mises en place pour répondre aux contraintes et problématiques de l’économie politique. Le cas du Mexique permet de tirer des enseignements utiles à ce sujet et donne des éclairages sur la manière de concevoir et de mettre en oeuvre ces programmes.Le programme PES est mis en oeuvre au Mexique depuis 2003. Il vise à protéger les forêts préservées et à avoir un impact social en rémunérant les communautés les plus

  7. Associated Factors of Sleep Quality and Behavior among Students of Two Tertiary Institutions in Northern Malaysia.

    Science.gov (United States)

    Lai, P P; Say, Y H

    2013-06-01

    The objective of the study was to investigate the associated factors of sleep quality and behavior among Malaysian tertiary students. The response rate to the questionnaire study was 41.0%. 1,118 students (M = 486, F = 632; mean age = 20.06 ± 1.53 years) were recruited from Universiti and Kolej Tunku Abdul Rahman (Perak campuses) who completed a sleep quality and behavior questionnaire based on Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), Horne-Ostberg Morningness-Eveningness Scale (MES) and craving of high-calorie foods. Results showed that students had the following sleeping habits - bed time = 2.41 a.m. ± 3.35 hr, rise time = 9.00 a.m. ± 1.76 hr, sleep latency = 16.65 ± 14.30 min and sleep duration = 7.31 ± 1.45 hr. 32.9% of the students were defined as poor quality sleepers, 30.6% suffering excessive daytime sleepiness (EDS) and 81.6% were categorized as individuals with 'definitely eveningness', defined as people who are definitely most alert in the late evening hours and prefer to go to bed late. There were no significant gender differences in sleep quality, 'chronotype' and EDS. Although there was no association of sleep quality and EDS with cumulative Grade Point Average (cGPA) and class skipping, EDS was associated with the tendency to fall asleep in class. Body Mass Index (BMI) was not associated with total sleep, PSQI, ESS and MES scores. Meanwhile, high-calorie food craving was associated with sleep duration, PSQI and ESS, but not MES. In conclusion, poor sleep behavior among Malaysian tertiary students in this study was not associated with gender, academic performance and BMI, but was associated with craving of high-calorie foods instead.

  8. Antennes relais et symptômes

    DEFF Research Database (Denmark)

    Berg-Beckhoff, G.; Blettner, M.; Kowall, B.

    2009-01-01

    Continuing their investigation of the adverse effects of mobile phone base stations, the German team conducting this first large-scale field study looked for an association between residential exposure to radiofrequency electromagnetic fields and different health scores....

  9. 5 km de autopista al mes

    Directory of Open Access Journals (Sweden)

    Editorial, Equipo

    1972-02-01

    Full Text Available This is one of the most important civil engineering projects of its kind currently under construction in the country. It consists of 93 km of motor road, with four traffic lanes, and it includes many ancillary works, using prefabricated units, multilevel crossings and overpasses of varying lengths, some of them 600 m long. The large scale use of prefabricated elements and of very modern machinery will make it possible to complete the project several months ahead of schedule.Esta obra, que puede contarse entre las más importantes del país, comprende 93 km de autopista con cuatro circulaciones, numerosas obras de fábrica —prefabricadas—, intersecciones a distinto nivel y pasos elevados con longitudes varias, algunos de 600 metros. La prefabricación masiva y el empleo de una modernísima maquinaria permitió terminar la obra varios meses antes del plazo previsto.

  10. Les particules fantômes

    CERN Multimedia

    2004-01-01

    During Discovery Monday on 5th July 2004 light will be shed on the path that the neutrinos will take to Gran Sasso. Attendees will also learn about the methods physicists use to try and catch them in order to prove that they have a mass (1/2 page)

  11. “Enverdeciendo” las PyMEs

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

    dramos

    31 Mar 2015 ... SMEs are subject to increasing pressures to adopt greener environmental practices, due to the combination of civil society pressures, increasingly stringent local and international legislation and market demands. As SMEs in developing countries contribute with the bulk of employment, the management of ...

  12. El pan nuestro de cada mes

    Directory of Open Access Journals (Sweden)

    Dora Cecilia Ramírez

    1989-01-01

    Full Text Available Comenzar escribiendo que Pan fue una revista singular sería caer en un lugar común. Lo más fácil sería decir que Pan fue o es una caja de sorpresas. Corre 1935. Colombia es un país rural; cobija una sociedad que se resiste, a pesar de los discursos progresistas, a ese proceso de transformación que ya anuncia el comercio cafetero y las primeras huelgas. Es la época de auge de los ferrocarriles nacionales, cuando se toma Cafiaspirina y Griperol, se viaja a Nueva York vía La Habana en lujosos trasatlánticos y, por supuesto, no existe la televisión. La mujer está en la casa en "lo suyo" el hombre por fuera también en "lo suyo", "las ventanas de acero se imponen en las construcciones modernas" y la soledad del ser es la misma de hoy. Se respira una gran mediocridad nacional y los escritores adoran la retórica. Entonces aparece Pan, con su formato de 15 por 23 centímetros y sus ochenta y cuatro páginas.

  13. Elaboration, microstructure, propriétés électriques et magnétiques de matériaux textures dans les systèmes Nd-Ce-Cu-O et Bi-Sr-Ca-Cu-O

    Science.gov (United States)

    Dhalenne, G.; Trouilleux, L.; Jegoudez, J.; Revcolevschi, A.; Monod, P.; Kormann, R.; Ganne, J. P.; Motohira, N.; Kitazawa, K.

    1991-11-01

    Superconducting textured materials were grown from the melt by a floating zone technique in the Nd-Ce-Cu-O and Bi-Sr-Ca-Cu-O systems. The influence of growth conditions and starting compositions on the microstructures and phase composition of the samples were studied by optical microscopy under polarized light, electron microprobe analysis and X-ray diffraction. The superconducting properties of these samples were examined by both electrical resistivity and magnetic measurements. A very strong influence of the microstructure on the superconducting properties as well as a magnetic and electrical anisotropy were shown. In the case of the Bi-Sr-Ca-Cu-O system, critical current densities ranging from 1 600 to 3 000 A.cm^{-2} were measured at 77 K. Des matériaux supraconducteurs texturés ont été élaborés à partir de l'état liquide dans les systèmes Nd-Ce-Cu-O et Bi-Sr-Ca-Cu-O par une technique de fusion de zone. L'influence des conditions de croissance et des compositions initiales sur la microstructure des échantillons a été étudiée par microscopie optique en lumière polarisée, microsonde électronique et diffraction des rayons X. Les propriétés supraconductrices des échantillons ont été examinées par des mesures électriques et magnétiques. Il a été observé une forte influence de la microstructure sur les propriétés supraconductrices ainsi qu'une anisotropie électrique et magnétique. Dans le cas du système Bi-Sr-Ca-Cu-O, les densités de courant critique mesurées à 77 K sont comprises entre 1 600 et 3 000 A.cm^{-2}.

  14. Analyse thermique de systèmes de chauffage localisé à basse température dans les serres agricoles : paillage radiant et tubes enterrés

    Science.gov (United States)

    Monteil, C.; Amouroux, M.

    1993-10-01

    Greenhouse heating can be achieved using various systems, for the generator as well as for the exchanger. The exchanger characteristics involve quite different modes of energy distribution, with differing agronomic and economic consequences. This paper focuses on two ground-level heating systems with low temperature (20 40°C) water circulation: a “radiant mulch” exchanger, composed of a network of ground-level heating hoses, and a “buried pipes” exchanger, composed of a network of under-ground pipes. The first part of the paper develops a model for these exchangers and its integration into a previously described greenhouse global model. The second part compares the effects of these exchangers on the greenhouse energetical behaviour with those of classic aerial metallic pipes with hot (50 70°C) water circulation. Le chauffage des serres agricoles peut être réalisé avec divers types de systèmes, tant pour le générateur que pour l'échangeur situé au sein de la serre. Les caractéristiques de l'échangeur induisent des modes de distribution de l'énergie très différents, dont les conséquences agronomiques et économiques peuvent être importantes. Le présent article s'intéresse à deux types d'échangeurs à circulation d'eau “à basse température” (20 40°C) localisés au niveau du sol de la serre: chauffage par gaines en matière plastique posées à même le sol (ou “paillage radiant”), chauffage par réseau de tubes enterrés à faible profondeur dans le sol de la serre. Une première partie développe une modélisation de ces échangeurs et son intégration dans un modèle plus global de la serre agricole, déjà présenté par ailleurs. Une seconde partie exploite cette modélisation en effectuant une analyse comparative de ces échangeurs avec un échangeur de référence constitué de tubes métalliques aériens à circulation d'eau chaude (50 70°C), très classiquement utilisé dans les serres.

  15. EnMa Tool: una herramienta de software en apoyo al estándar ISO 50001 con basamento en indicadores clave de desempeño para la búsqueda de eficiencia energética en procesos productivos de PyMEs

    OpenAIRE

    Nahuel, Leopoldo; Maccarone, José Luis; Marchesini, Javier; Rognoni, Marcela; García Rodrigo, María

    2015-01-01

    En el presente trabajo se analizan las principales causas de ineficiencia energética y se busca definir Indicadores Clave de Desempeño (Key Performance Indicator, KPI por sus siglas en inglés) para su implementación en PyMEs industrializadas de cualquier tipo, con la finalidad de alcanzar la eficiencia energética en los procesos productivos que en éstas se realizan. Se siguen los lineamientos propuestos por la norma internacional ISO 50001, para el diseño de un Sistema de Gestión de la Energí...

  16. Clasificación de los bosques mesófilos de montaña de México: afinidades de la flora Classification of the Mexican cloud forests: floristic affinities

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Ruiz-Jiménez

    2012-12-01

    Full Text Available Se realizó un análisis de clasificación numérica para comparar las semejanzas florístico-geográficas-bioclimáticas de los bosques mesófilos de montaña (BMM de México. Con base en publicaciones de carácter florístico, de vegetación y sinecológico se obtuvo una base de datos de la flora vascular del BMM que contiene 6 453 especies, 1 426 géneros y 213 familias. La matriz de presencia-ausencia consta de 2 856 especies (180 familias, 897 géneros distribuidas en 83 localidades; la clasificación se realizó mediante un análisis de conglomerados, utilizando índices de similitud; se agrupó con el método UPGMA y se construyeron dendrogramas. Con BIOCLIM se obtuvo el perfil bioclimático de cada grupo y con el promedio de las variables se generó una matriz que se clasificó como la anterior. La importancia de las variables bioclimáticas fue evaluada mediante un análisis de ordenación por componentes principales. Los grupos florísticamente similares se ajustan a las provincias florísticas de México y los perfiles bioclimáticos respaldan dichas agrupaciones. Por sus características bioclimáticas, los BMM se agrupan en 3 conjuntos de localidades. Se sustenta que las localidades geográficamente más cercanas presentan mayor similitud florística. Conforme se genera más información sobre el BMM de México se refuerzan las hipótesis de relación entre las provincias florísticas.A numerical classification analysis was made to compare the floristic-geographic-bioclimatic resemblance among Mexico's cloud forest (MCF. A MCF vascular flora database was made based on floristics, vegetation and sinecological published work; which contains 6 453 species, 1 426 genera and 213 families. The presence-absence matrix consists of 2 856 species (180 families and 897 genera scattered through 83 localities; this was rated by means of a conglomerate analysis using the similarity indexes this was put together using the UPGMA method; dendrograms

  17. Revealing the ISM in high redshift starburst galaxies: An analysis of Herschel PACS and SPIRE FTS spectroscopic observations of HerMES and H-ATLAS-selected lensed galaxies

    Science.gov (United States)

    Cooray, Asantha

    In the quest to develop a fundamental understanding of galaxy formation and evolution, observations of dusty star-forming galaxies (DSFGs) promise significant progress this decade. The importance of DSFGs is highlighted by the fact that half of the energy emitted by extragalactic sources emerges as dust-reprocessed light at infrared (IR) to sub millimeter wavelength. In the post-herschel\\ era, we are now at a unique position to tackle some of the key questions on galaxy formation and evolution because of the large area Herschel's Key Project surveys (HerMES and H-ATLAS). In particular those surveys have allowed us to identify a sample of 250 strongly gravitationally lensed DSFGs at z > 1. They give us a unique opportunity to dissect the detailed structures and kinematics of DSFGs. The Herschel Science Archive also contains individual follow up data on 44 and 25 of the brightest sources with SPIRE-FTS and PACS, respectively, in the spectroscopy mode, taking over 250 hours in four open-time programs. Only one of the 44 SPIRE FTS targets has yet to appear in the published literature. One of the four include an open-time 2 PACS spectroscopy program that was led at UCI by a former postdoc from the PI's group. That program was initially approved at Priority 2 in 2011, but was triggered in late 2012 and achieved 100% completion during the last two weeks of Herschel lifetime in May 2013. This archival analysis, interpretation, and modeling program involves two parts: (i) PACS spectroscopy in 50 to 200 microns of 25 lensed galaxies in the fine-structure emission lines [SiII]34, [SIII]33, [OIV]26, [OIII]52, [NIII]57 and [OI]63, and the molecular hydrogen H_2 S(0) and S(1). (ii) SPIRE FTS spectroscopy of 44 lensed galaxies, including above 25, over the wavelength range of 200 to 600 microns targeting [CII]158, [OIII]88, [OI]63/145, and [NI]122. The analysis will lead to a better understanding of the ISM of starbursting galaxies that span 1 research supports Goal 2 of the

  18. Optimization of Gas Turbine Cogeneration Systemfor Various Heat Exchanger Configurations Optimisation des systèmes de turbine à combustion en cogénération pour différentes configurations des échangeurs de chaleur

    Directory of Open Access Journals (Sweden)

    Costea M.

    2011-11-01

    Full Text Available The present paper investigates and compares the performance of three configurations of Gas Turbine systems allowing cogeneration of heat and electricity, on the basis of an irreversible regenerative Brayton-Joule cycle. The proposed model is developed for two different cycle constraints, namely, an imposed heat transfer rate released by the fuel combustion, or an imposed maximum cycle temperature. The model also includes the irreversibility due to the friction in the compressor and turbine, and due to the heat losses in the combustion chamber and heat exchangers. Energy efficiency for the system without and with cogeneration, and the exergetic efficiency are used in order to emphasize the cogeneration advantages, but also to help the designer to choose the best configuration of the Gas Turbine system that suits to his needs. Experimental data from a real operating microturbine were used to validate the model. The power output and the energy and exergetic efficiencies are optimized with respect to a set of operating parameters. The optimum values of the Gas Turbine engine parameters corresponding to maximum power output and respectively to maximum thermodynamic efficiency are discussed. The results show same optimal values of the compression ratio corresponding to almost all maximum performances for an imposed heat transfer rate released by the fuel combustion, excepting the maximum exergetic efficiency that requires higher optimal values of the compression ratio than the maximum exergy rate one. A performance comparison of the three configurations is done and future perspectives of the work are proposed. Cet article explore et compare les performances des trois configurations de systèmes de turbine à combustion permettant la production combinée de chaleur et d’électricité, sur la base du cycle irréversible régénératif de Brayton-Joule. Le modèle proposé est développé pour deux contraintes différentes sur le cycle, notamment le

  19. Population study of depressive symptoms and risk factors in pregnant and parenting Mexican adolescents Estudio poblacional sobre los síntomas depresivos y los factores de riesgo en adolescentes mexicanas embarazadas o con hijos

    Directory of Open Access Journals (Sweden)

    María Asunción Lara

    2012-02-01

    Full Text Available OBJECTIVE: To study the prevalence of, severity of, and risk factors for depressive symptoms in a probabilistic sample of Mexican adolescent mothers. METHODS: A sample of adolescents aged 13-19 years, drawn from a national survey, was interviewed in relation to severity of depressive symptoms [Center for Epidemiological Studies Depression Scale (CES-D 16-23 and CES-D > 24] and pregnancy or parenting status. RESULTS: Depressive symptoms (CES-D 16-23 ranged from 2.3% in the first postpartum semester to 32.5% in the second trimester of pregnancy; high depressive symptoms (CES-D > 24 ranged from 3.0% in the second postpartum semester to 24.7% in mothers of an infant more than 1 year old. Significant differences between groups were in mothers in the second gestation trimester, who had significantly more symptoms than those who had never been pregnant and those in the first postpartum semester. In those with high symptomatology, no significant differences were observed between groups. A multinomial logistic regression model used to estimate the likelihood of depression found increased risk of depressive symptoms (CES-D 16-23 in those without a partner in the first, second, or third trimester of pregnancy; in the second postpartum semester; and with a child over the age of 1 year. Increased risk of high symptomatology (CES-D > 24 was found in those not in school or with a child over the age of 1 year. CONCLUSIONS: Depressive symptoms entail an enormous burden of disease for the mother and mental health risks to the infant; mothers should therefore be targeted in prevention and intervention actions.OBJETIVO: Estudiar la prevalencia, la gravedad y los factores de riesgo de los síntomas depresivos en una muestra probabilística de madres adolescentes de México. MÉTODOS: En una muestra de adolescentes de 13 a 19 años de edad tomadas de una encuesta nacional se efectuaron entrevistas relacionadas con la gravedad de los síntomas depresivos (Center for

  20. FACTORES AMBIENTALES Y GENÉTICOS QUE INFLUYEN SOBRE LA EDAD AL PRIMER PARTO EN HEMBRAS DE LA RAZA ROMOSINUANO

    Directory of Open Access Journals (Sweden)

    Marco Suárez

    2006-05-01

    Full Text Available Objetivo. Estudiar los factores ambientales y genéticos que influyen sobre la edad al primer parto dehembras romosinuano. Materiales y métodos. Fueron estudiados 932 datos de la edad al primer partode hembras de la raza Romosinuano, nacidas en el Centro de Investigación Turipaná de CORPOICA,Cereté, Colombia, en el período de 1980 a 2001. Para el estudio de los factores ambientales se utilizóel análisis de varianza mediante modelos lineales utilizando el procedimiento GLM de SAS (1995.Resultados. La edad al primer parto fue de 1162.3±4.2 días, con un coeficiente de variación del 11.19%.El análisis de varianza reveló que el año y mes de nacimiento fueron causas estadísticamente significativasde variación de la edad al primer parto. La heredabilidad, calculada por la correlación intraclase entremedias hermanas paternas fue de 0.16±0.08. Conclusión. El año y mes de nacimiento influyeron en laedad al primer parto de hembras romosinuano, pero la heredabilidad de la edad al primer parto y elsexo de la cría no se constituyen en características importantes a tener en cuenta.

  1. Rome ou la solution à tous les problèmes européens : Georg Moenius et le concept de romanité durant l´entre-deux-guerres

    Directory of Open Access Journals (Sweden)

    Joris Lehnert

    2012-10-01

    Full Text Available Cet article se propose d´étudier l´interprétation par le prêtre allemand Georg Moenius (1890-1953 de la religion catholique romaine comme instrument nécessaire à la restauration spirituelle de l´Occident – de la civilisation européenne – la crise de l’Europe de l’entre-deux-guerres. Pacifiste et pourfendeur acharné de tout nationalisme (et en particulier du national-socialisme, il se mit en congé de son diocèse et livra, grâce à des relations de voyages en Italie et en France, une ébauche de sa pensée. A partir de 1929 éditeur de l´hebdomadaire catholiques munichois Allgemeine Rundschau, il s’employa, grâce à cette « arme intellectuelle » et jusqu'à son exil provoqué par l’arrivé d’Hitler au pouvoir, à diffuser et expliquer la nécessité de la Romanitas proposée par Gonzague de Reynold. Admirateur de Maurras, fréquentant les milieux de l’Action française lors de ses séjours parisiens, il traduisit également l’ouvrage programmatique d’Henri Massis, Défense de l’Occident qu’il accompagna d’une longue introduction. Celle-ci présentait à la manière d’un véritable manifeste le retour à l’esprit du Saint Empire Romain Germanique médiéval, spirituellement dirigé par Rome, comme la solution à tous les problèmes de l’Europe.This article focuses on the ideas of the Bavarian priest Georg Moenius who saw the Roman Catholic Church as the necessary tool to spiritually restore the European civilization in times of the crisis of the interwar period. Pacifist and virulent opponent of all nationalism (and soon especially of the national-socialism, he took leave of his diocese and expressed his thoughts through travel books containing his impressions of Italy and of France. From 1929 until his exile provoked by Hitler’s accession to power, he was editor of the Allgemeine Rundschau, a catholic Bavarian weekly journal, and worked on the diffusion and explanation of the necessity of

  2. On Implementation of Dynamic Programming for Optimal Control Problems with Final State Constraints À propos de l’implémentation de la programmation dynamique pour des problèmes de contrôle optimal avec des contraintes sur l’état final

    Directory of Open Access Journals (Sweden)

    Sundström O.

    2009-09-01

    Full Text Available In this paper we present issues related to the implementation of dynamic programming for optimal control of a one-dimensional dynamic model, such as the hybrid electric vehicle energy management problem. A study on the resolution of the discretized state space emphasizes the need for careful implementation. A new method is presented to treat numerical issues appropriately. In particular, the method deals with numerical problems that arise due to high gradients in the optimal cost-to-go function. These gradients mainly occur on the border of the feasible state region. The proposed method not only enhances the accuracy of the final global optimum but also allows for a reduction of the state-space resolution with maintained accuracy. The latter substantially reduces the computational effort to calculate the global optimum. This allows for further applications of dynamic programming for hybrid electric vehicles such as extensive parameter studies. Cette publication présente certains problèmes concernant l’implémentation de la programmation dynamique pour le contrôle optimal d’un modèle dynamique scalaire, comme par exemple la gestion énergétique d’un véhicule hybride électrique. Une étude sur la résolution de l’espace d’état discrétisé souligne le besoin d’une implémentation minutieuse. Une nouvelle méthode qui permet de traiter des problèmes numériques d’une façon adéquate est présentée. Cette méthode permet particulièrement de résoudre des problèmes numériques engendrés par de forts gradients dans la fonction coût optimale. Ces gradients se situent surtout aux bornes de l’ensemble d’états atteignables. La méthode proposée améliore non seulement la précision de l’optimum global, mais permet aussi de réduire la résolution de l’espace d’état en conservant la précision. Le nombre de calculs nécessaire pour évaluer l’optimum global est ainsi considérablement réduit. Cela permet des

  3. Risk Factors

    Science.gov (United States)

    ... cells do not invade nearby tissues or spread. Risk Factors Key Points Factors That are Known to ... chemicals . Factors That are Known to Increase the Risk of Cancer Cigarette Smoking and Tobacco Use Tobacco ...

  4. Factores asociados con la irregularidad de la ingesta de Dapsona en pacientes con lepra: Dapsona en pacientes con lepra

    Directory of Open Access Journals (Sweden)

    Luis Carlos Orozco Vargas

    2013-04-01

    Full Text Available Introducción: Conocer los factores asociados al cumplimiento del tratamiento en pacientes con lepra, es muy importante para prevenir la resistencia del Mycobacterium leprae y garantizar la cura bacteriológica de estas personas. La prueba de orina para Dapsona, presente en el régimen autoadministrado, es un método sencillo para establecer la regularidad del tratamiento. Objetivo: Explorar los factores asociados a la irregularidad de la ingesta del tratamiento antileproso. Métodos: Estudio de corte transversal de los enfermos que recibieron tratamiento antileproso en un centro dermatológico. La irregularidad se estableció con la prueba de dapsonuria. Se consideró irregular el que presentó la prueba negativa. Las variables sospechosas de influir en la irregularidad se analizaron con regresión logística exacta. Resultados: En el modelo final del análisis multivariado se encontraron cinco variables asociadas, entre éstas sobresalen como factores de riesgo, la ausencia de discapacidad, OR 28.56 (IC90% 1.2-2.1 y la entrega de tratamiento para tiempos mayores a un mes, por cada mes OR 3.41 (IC90% 1.4-9.2 y como factor protector, la aceptación familiar de la enfermedad OR 0.008 (IC90% 0.001-0.24. Conclusión: Aunque es posible que el pequeño tamaño de muestra no haya permitido detectar algunos factores de riesgo informados en otras investigaciones, la mayoría de esos estudios no han realizado análisis multivariado por lo cual es posible que muchos de los factores informados en la literatura no tengan importancia. Salud UIS 2013; 45 (1: 7-14

  5. Illustration de systèmes de surveillance de deuxième génération du VIH et IST à travers une étude de comportement et une étude de séroprévalence dans les Territoires français du Pacifique Sud

    OpenAIRE

    Laroche, Sophie

    2007-01-01

    Ce mémoire se penche sur la prévalence du VIH/SIDA et d'autres IST [infections sexuellement transmissibles] parmi les jeunes dans les Territoires français du Pacifique Sud. Le présent rapport expose les principes des SDG [systèmes de surveillance de deuxième génération], illustrés par deux types d'enquêtes : une enquête de comportements et une enquête de séroprévalence. [...] L'enquête de comportements intitulée: "Enquête sur les attitudes, comportements et croyance du VIH/SIDA parmi les j...

  6. Quelques conséquences de l'introduction de deux espèces de macrophytes, Elodea canadensis Michaux et Elodea nuttallii St. John, dans les écosystèmes aquatiques continentaux : exemple de la plaine d'Alsace et des Vosges du Nord (Nord-Est de la France

    Directory of Open Access Journals (Sweden)

    THIEBAUT G.

    1997-01-01

    Full Text Available L'introduction au XIXème et XXème siècle, de deux espèces d'élodées Elodea canadensis Michaux et Elodea nuttallii St. John, dans les cours d'eau du nord-est de la France, a induit des modifications dans la composition floristique et le fonctionnement des écosystèmes aquatiques. L'analyse comparative de la distribution géographique de ces deux hydrophytes dans les eaux calcaires (plaine d'Alsace et acides (Vosges du Nord a permis de préciser leur écologie. Après des phases successives d'expansion des deux espèces, celles-ci se sont intégrées dans les phytocénoses aquatiques. L'introduction dans les écosystèmes aquatiques d'Elodea canadensis et d'E. nuttallii a induit des phénomènes de compétition interspécifique, en faveur essentiellement d'Elodea nuttallii. Cette dernière apparaît comme l'espèce la plus compétitive dans les cours d'eau eutrophes de la plaine d'Alsace (aptitude à accumuler le phosphore, sensibilité moindre à l'azote ammoniacal. Les élodées peuvent réaliser une épuration biologique, mais provoquent, lors de leur décomposition, une eutrophisation secondaire des eaux en absence de faucardage.

  7. Complicaciones posparto del síndrome HELLP: diagnóstico post mórtem

    OpenAIRE

    Beltrán, C.M.; Pérez-Jorge, P.J.; Martínez, M.C.

    2013-01-01

    El síndrome HELLP (del inglés Hemolytic anemia, Elevated Liver enzyme, Low Platelet count) es una complicación que afecta aproximadamente al 0,1% a 0,6% de los embarazos que cursan con preeclampsia. El hecho de que este síndrome se asocie a una rotura hepática es una complicación rara y potencialmente letal, con una incidencia inferior a un 2%, aunque algunos autores la cifran en un 9%. Se ha descrito que hasta un 80% de las pacientes en que se produce un hematoma subcapsular hepático espontá...

  8. Factor XII (Hageman factor) deficiency

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000545.htm Factor XII (Hageman factor) deficiency To use the sharing features on this ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  9. Determinantes sociales frente a estilos de vida en la diabetes mellitus de tipo 2 en Andalucía: ¿la dificultad para llegar a fin de mes o la obesidad? Social determinants vs. lifestyle in type 2 diabetes mellitus in Andalusia (Spain: difficulty in making ends meet or obesity?

    Directory of Open Access Journals (Sweden)

    Antonio Escolar Pujolar

    2009-10-01

    Full Text Available Objetivo: Valorar las relaciones de la dificultad para llegar a fin de mes con la obesidad y la diabetes mellitus de tipo 2 en Andalucía. Métodos: Estudio transversal basado en los datos de la Encuesta de Salud de Andalucía-2003. Cálculo de prevalencias y odds ratio (OR de tener diabetes mellitus de tipo 2 según variables de estilo de vida, y de obesidad y diabetes mellitus de tipo 2 según la dificultad autopercibida para llegar a fin de mes. Resultados: La OR ajustada por edad de tener diabetes mellitus de tipo 2 en personas obesas respecto a las de peso normal fue de 2,52 (intervalo de confianza del 95% [IC95%]:1,63-3,88 y de 2,13 (IC95%:1,28-3,54 en las mujeres y los hombres, respectivamente. El sedentarismo no se asoció con un riesgo significativo de diabetes mellitus de tipo 2 en ninguno de los dos sexos. Para las mujeres con mayor dificultad económica para llegar a fin de mes, respecto a las que tienen más facilidades, la OR de ser obesa, ajustada por edad y ejercicio físico, fue de 3,03 (IC95%:1,96-4,66, y la de diabetes mellitus de tipo 2, ajustada por edad, ejercicio físico e índice de masa corporal, fue de 2,55 (IC95%:1,28-5,10. En los hombres ninguna de las OR fue estadísticamente significativa. Conclusión: En las mujeres, las dificultades para llegar a fin de mes reflejan un contexto socioeconómico favorecedor de obesidad y de diabetes mellitus de tipo 2. Las desigualdades de clase social y género identificadas pueden contribuir a ampliar el actual marco explicativo de los determinantes de la diabetes mellitus de tipo 2, excesivamente centrado en las conductas individuales. La dificultad autopercibida para llegar a fin de mes podría utilizarse como indicador de pobreza en los estudios de desigualdades en salud.Objective: To assess the relationship between difficulty in making ends meet and obesity and type 2 diabetes mellitus in Andalusia. Methods: We performed a cross-sectional survey based on the Andalusian Health

  10. Contagem de bactérias mesófilas aeróbias e características físico-químicas do leite humano armazenado em embalagem de polietileno / Aerobic mesophilic bacteria count and physical and chemical characteristics of breast milk stored in polyethylene packages

    Directory of Open Access Journals (Sweden)

    Mayara de Simas Mesquita

    2016-08-01

    Full Text Available Objetivo: Avaliar a contaminação por bactérias mesófilas aeróbias em leite humano ordenhado pasteurizado (LHOP e a influência da embalagem de polietileno sobre as características físico-químicas do leite humano (LH cru e pasteurizado. Metodologia: Foram analisadas 55 amostras de leite humano ordenhado (LHO, oriundas do Banco de Leite Humano (BLH do Hospital Maternidade Herculano Pinheiro (HMHP e do Instituto Fernandes Figueira (IFF. Na determinação das condições higiênico-sanitárias do LHOP, foi realizada contagem de bactérias mesófilas aeróbias. A acidez Dornic, o valor energético, gordura, lactose e proteínas em LH cru e pasteurizado foram realizados antes e após o armazenamento de 15 dias nas embalagens. Foram realizadas análises descritivas e da influência da embalagem sobre os parâmetros, segundo ANOVA. Valores p < 0,05 foram considerados significativos. Resultados: A ocorrência de mesófilos no LHOP variou de 0 a 12%. O LH cru e pasteurizado apresentaram acidez < 8oDornic, indicando boas práticas de manejo e condições higiênico-sanitárias adequadas. Gordura, valor energético, lactose e proteínas do LH nas embalagens de polietileno e vidro variaram, respectivamente, 3,2–3,5%, 65–68 Kcal/dL, 6,0% e 0,9–1,3%. Não foram observadas diferenças significativas nas características físico-químicas do LH entre as embalagens. Conclusão: A embalagem de polietileno pode ser uma alternativa viável para uso em BLH. ======================================================= Objective: To determine the aerobic mesophilic bacteria count in pasteurized human milk and to evaluate the influence of polyethylene bags on the physicochemical characteristics of raw and pasteurized human milk. Methods: 55 samples of human milk coming from the Human Milk Bank of Herculano Pinheiro Hospital and Fernandes Figueira Institute were analyzed. An aerobic mesophilic bacteria count was performed when determining the sanitary hygienic

  11. Quantificação de coliformes, Staphylococcus aureus e mesófilos presentes em diferentes etapas da produção de queijo frescal de leite de cabra em laticínios Enumeration of coliforms, Staphylococcus aureus and aerobic mesofilic bacteria throughout the manufacture process of a goat unripened cheese produced in a dairy plant

    Directory of Open Access Journals (Sweden)

    Simone Ulrich Picoli

    2006-03-01

    Full Text Available O objetivo do presente estudo foi acompanhar a produção de queijo frescal de leite de cabra, avaliando a qualidade higiênica do processamento pela quantificação de coliformes, S. aureus e mesófilos totais. A produção de três diferentes lotes de queijo foi acompanhada, sendo coletadas amostras de várias etapas do processamento. Além disso, amostras de queijo pertencente ao lote acompanhado foram coletadas na prateleira de um estabelecimento comercial durante seu período de validade. Os suabes coletados foram semeados em ágar sangue ovino; as amostras de água foram submetidas à Colimetria; as demais amostras foram submetidas à contagem de S. aureus, coliformes e mesófilos totais por meio de protocolos de rotina. Verificou-se que, apesar da pasteurização ter diminuído consideravelmente as populações microbianas presentes no leite cru, a falta de sanificação adequada de um equipamento que entrava em contato com o leite cru e que dá acesso ao tanque de coagulação, resultou na recontaminação da matéria-prima. Ao final do processamento, o queijo encontrava-se dentro dos padrões exigidos pela legislação, contudo a elevada contagem de mesófilos totais sugere que sejam melhoradas as medidas de sanitização durante o processamento, a fim de garantir a qualidade higiênica e uma maior vida de prateleira ao queijo produzido.The aim of this study was to evaluate the hygienic conditions throughout the manufacture process of a goat unripened cheese, using the enumeration of coliforms, S. aureus and aerobic mesofilic bacteria as indicators. The production of three different lots of cheese was followed, being collected samples throughout the processing steps. Furthermore, samples of cheese belonging to the same sampled lot were collected in the shelf of a commercial establishment throughout the shelf life period. Swabs were streaked onto blood agar plates; water samples were submitted to colimetric assays; all other samples were

  12. Robust factorization

    DEFF Research Database (Denmark)

    Aanæs, Henrik; Fisker, Rune; Åström, Kalle

    2002-01-01

    Factorization algorithms for recovering structure and motion from an image stream have many advantages, but they usually require a set of well-tracked features. Such a set is in generally not available in practical applications. There is thus a need for making factorization algorithms deal effect...

  13. Organizational factors

    International Nuclear Information System (INIS)

    Holy, J.

    1999-12-01

    The following organizational factors are considered with respect to the human factor and operating safety of nuclear power plants: external influences; objectives and strategy; positions and ways of management; allocation of resources; working with human resources; operators' training; coordination of work; knowledge of organization and management; proceduralization of the topic; labour organizing culture; self-improvement system; and communication. (P.A.)

  14. El factoring

    Directory of Open Access Journals (Sweden)

    Alberto Rosenthal

    1988-04-01

    Full Text Available RESUMEN El artículo  presenta, una conceptualización general de lo que es el factoring, el origen del mismo, su evolución y hace una clasificación de los distintos tipos de factoring.

  15. L'impact des développements scientifiques sur la résolution des problèmes techniques posés par la nouvelle conjoncture dans l'exploration et la production du pétrole Impact of Scientific Developments on the Solving of Technical Problems Raised by the New Economic Situation in Oil Exploration and Production

    Directory of Open Access Journals (Sweden)

    Tissot B.

    2006-11-01

    Full Text Available Dans les circonstances difficiles que traverse l'exploration et la production du pétrole, le savoir-faire technologique, associé à la maîtrise des coûts, seront pour l'industrie pétrolière et parapétrolière des atouts essentiels. On envisage ici l'impact prévisible des développements scientifiques sur la résolution des problèmes techniques dans l'exploration et la production. Les principales disciplines scientifiques concernées (géologie, géophysique, géochimie, mécanique des roches et des sols, mécanique des fluides, physicochimie des interfaces ainsi que trois techniques de base (modélisation, systèmes experts, matériaux nouveaux sont examinées dans ce sens. En particulier,la modélisation numérique voit son importance croître de manière spectaculaire : elle couvre désormais des domaines nouveaux, comme les Sciences de la Terre, et continue à s'enrichir de développements importants, même dans les secteurs où on l'utilise depuis 20 ans comme la production. Ces évolutions s'accompagneront nécessairement d'ajustements dans la formation des hommes et le fonctionnement des organisations; en particulier un espace nouveau pourrait se dégager pour de petites entreprises de conseil et de service plus riches en matière grise qu'en investissements lourds. In the difficult circumstances now confronting oil exploration and production, technical know-how combined with cost control will be essential assets for the petroleum and petroleum equipment and service industries. This article considers the foreseeable impact of scientific developments on the solving of technical problems in exploration and production. The principal scientific disciplines involved (geology, geophysics, geochemistry, rock and soil mechanics, fluid mechanics, interface physicochemistry as well as three basic techniques (modeling, expert systems, new materials are examined within this context. In particular, numerical modeling is increasing in

  16. El factoring

    Directory of Open Access Journals (Sweden)

    Alberto Rosenthal

    2015-04-01

    Full Text Available RESUMEN Se presenta la segunda parte del artículo aparecido en  el número 6 de la revista EAN. Su contenido es complementario a lo expuesto en dicho número, en está aparecen las ventajas del factoring, conveniencias, limitaciones así como la forma  de efectuar un factor en Colombia,  su necesidad, incidencia económica, etc.

  17. Prevalencia del consumo de hipnosedantes en población ocupada y factores de estrés laboral asociados

    OpenAIRE

    Colell Ortega, Esther, 1961-; Sánchez Niubò, Albert; Domingo i Salvany, Antònia; Delclòs i Clanchet, Jordi, 1956-; Benavides, Fernando G. (Fernando García)

    2014-01-01

    Objetivo: Explorar la prevalencia de consumo de ansiolíticos y somníferos (hipnosedantes) en una muestra de la población ocupada en España y evaluar su asociación con determinados factores de estrés relacionados con el trabajo. Métodos: Con datos de la Encuesta Domiciliaria sobre Alcohol y Drogas en España (EDADES) 2007 se analizó la distribución del consumo de hipnosedantes en el último mes entre la población ocupada de 16 a 64 años de edad (n = 13.005). Mediante regresión logística se ex...

  18. Méthode intégro-variationnelle appliquée aux probèmes intérieur et extérieur avec surface libre de l'hydrodynamique linéaire Integro-Variational Method Applied to Indoor and Outdoor Problems with a Free Surface of Linear Hydrodinamics

    Directory of Open Access Journals (Sweden)

    Berhault C.

    2006-11-01

    Full Text Available Le but de cet article est de montrer que l'on peut appliquer une rintégro-variationnelle pour résoudre les problèmes intérieur (comportementliquide en milieu confiné et extérieur (diffraction-radiation de l'hydrodynamique linéaire. Une comparaison des résultats obtenus pour le problème intérieur dans Q les méthodes classiques : équation intégrale (singularités et formulation rationnelle (éléments finis, montre les avantages de cette méthode. The aim of this article is to show that an integro-variational method can be applied for solving interior (behavior of a liquid in a confined environment and exterior (diffraction-radiation problems of linear hydrodynamics. A comparison of the results obtained for the interior problem in IR2 with conventional methods, i.e. intégral équation (singularities and variational formulation (finite elements, shows the advantages of this method.

  19. Échanges lexiculturels dans le domaine des fêtes et de la gas-tronomie: problèmes traductologiques et traitement lexicogra-phique (fr.-esp./esp.-fr.

    Directory of Open Access Journals (Sweden)

    Mª Mercedes Eurrutia Cavero

    2013-04-01

    Full Text Available The present study analyzes the transla-tion problems posed by the socio-cultural nuances implicit in the lexicon of two key branches of the tourism sector: feasts and gastronomy. Bearing in mind an initial hypothesis by which You will leave the hypothesis cultural penetration within a language lacks uniformity, lexical asymmetries are most observed in linguistic interac-tions featuring an insufficient knowledge of the other’s culture. From Galisson’s standpoint (1991, I will explore the semantic changes occurring in the process of creation of neologisms as well as the socio-cultural factors underlying them. The absence of discourse equivalents will lead us to bring new approaches stemming in a bilingual lexicographic methodology.

  20. Quality factors

    International Nuclear Information System (INIS)

    Kerr, G.D.

    1986-01-01

    The quality factor, Q, is a dimensionless modifier used in converting absorbed dose, expressed in rads (or grays), to dose equivalent, expressed in rems (or seiverts). The dose equivalent is used in radiation protection to account for the biological effectiveness of different kinds of radiation. The quality factor is related to both the linear energy transfer (LET) and relative biological effectiveness (RBE). The RBE's obtained from biological experiments depend in a complex way on the observed biological effect, the specific test organism, and the experimental conditions. Judgement is involved, therefore, in the choice of the quality factor. Questions regarding the adequacy of current Q values for neutrons were raised first in a 1980 statement by the National Council on Radiation Protection (NCRP) and later in a 1985 statement by the International Commission on Radiological Protection (ICRP). In 1980, the NCRP alerted the technical community to possible future increases between a factor of three and ten in the Q for neutrons, and in 1985, the ICRP suggested an increase by a factor of two in Q for neutrons. Both the ICRP and NRCP are now recommending essentially the same guidance with regard to Q for neutrons: an increase by a factor of two. The Q for neutrons is based on a large, albeit unfocused, body of experimental data. In spite of the lack of focus, the data supporting a change in the neutron quality factor are substantial. However, the proposed doubling of Q for neutrons is clouded by other issues regarding its application. 33 refs., 4 figs., 6 tabs

  1. Evolución del metabolismo hidrocarbonado a 5 años tras Diabetes Gestacional y su relación con factores predictores de diabetes al año del parto

    OpenAIRE

    Rando Nagera, Eduvigis

    2017-01-01

    Introducción Definimos la Diabetes Gestacional(DG) “como cualquier intolerancia hidrocarbonada, de gravedad variable, con comienzo o primer reconocimiento durante el embarazo independientemente del tratamiento y de la evolución”. La incidencia de DG y de Diabetes mellitus tipo 2(DM) está aumentando en todo el mundo. La DG se estima alrededor del 8,8% . El desarrollo de DG en una gestación conlleva complicaciones(materno-fetales y posparto: recurrencia de DG, disglucemias como glucemia b...

  2. Mesure des flux de CO2 et séquestration de carbone dans les écosystèmes terrestres ouest-africains (synthèse bibliographique

    Directory of Open Access Journals (Sweden)

    Ago, EE.

    2016-01-01

    Full Text Available CO2 measurement and carbon sequestration in West African terrestrial ecosystems. A review. Introduction. In West Africa, as elsewhere in other parts of the world, preserving terrestrial ecosystems has proven essential to any emissions mitigation policy for greenhouse gases, notably carbon dioxide. A meaningful assessment of the contribution of a given region to the global carbon cycle implies the need to think in terms of balance, taking into account the totality of the carbon export and import within the ecosystems. Literature. This review, based on the results of a small number of published and unpublished studies focusing on West African ecosystems, has as its main objective the assessment of the importance of carbon exchange. Carbon fluxes appear to be spatially highly variable in the West African region, mainly due to the variability of the types of vegetation, approaches to ecosystem management, and edaphic and climatic conditions. The mean annual precipitation appears to be the main factor controlling plant respiration and photosynthesis in this region. Annual cumulated NEE has been positively correlated with the rate of photosynthesis, and has been shown to account for 71% of its spatial variability at the annual scale. This paper also confirms the presence of carbon sink behavior for considered ecosystems in the West Africa with an annual average carbon sequestration of -2.0 ± 1.5 t C·ha-1 and highlights the need to improve understanding of factors or mechanisms controlling the carbon exchange between the ecosystems and the atmosphere. Conclusions. Based on these results, which were collected on a very limited number of sites, it appears necessary to continue with the measurement of carbon fluxes in the long term at the ecosystem scale in order to better appreciate the temporal and spatial variabilities, especially on a seasonal and inter-annual basis. This paper highlights the need to extend eddy covariance measurements to other

  3. Effect of Laparoscopic Adjustable Gastric Banding on Metabolic Syndrome and Its Risk Factors in Morbidly Obese Adolescents

    Directory of Open Access Journals (Sweden)

    Rushika Conroy

    2011-01-01

    Full Text Available We examined the effect of laparoscopic adjustable gastric banding (LAGB on weight loss, inflammatory markers, and components of the Metabolic Syndrome (MeS in morbidly obese adolescents and determined if those with MeS lose less weight post-LAGB than those without. Data from 14–18 yr adolescents were obtained at baseline, 6 and 12 months following LAGB. Significant weight loss and improvements in MeS components were observed 6 months and one year following LAGB. The incidence of MeS declined 56.8% after 6 months and 69.6% after 12 months. There was no significant difference in amount of weight lost post-LAGB between those with and without MeS at either timepoint. Correlations between change in weight parameters and components of MeS in those with and without MeS at baseline were examined and found to vary by diagnostic category. LAGB is effective for short-term improvement in weight, inflammatory markers, and components of MeS in morbidly obese adolescents.

  4. Risk factors

    International Nuclear Information System (INIS)

    Dennery, M.; Dupont, M.A.

    2007-01-01

    This article deals with the development of risk management in the gas sector business: why a risk factor legal mention must precede any published financial information? Do gas companies have to face new risks? Is there specific risks bound to gas activities? Why companies want to master their risks? Is it mandatory or just a new habit? Do they expect a real benefit in return? These are the risk management questions that are analyzed in this article which is based on the public communication of 15 gas companies randomly selected over the world. The information comes from their annual reports or from documents available on their web sites. The intention of this document is not to be exhaustive or to make statistics but only to shade light on the risk factors of the gas sector. (J.S.)

  5. Organizational factors

    International Nuclear Information System (INIS)

    Wahlstroem, B.; Kettunen, J.

    2005-01-01

    The goal of this lecture is to give an overview of important concepts connected to organisational factors and to provide an understanding of mechanisms by which they can contribute to safe or unsafe behaviour of people. The lecture gives examples of ways to organise work, organisational deficiencies and good practices applied in safety oriented organisations. The lecture also gives an introduction to international work and Finnish national regulation connected to organisation and management. (orig.)

  6. Factor analysis

    CERN Document Server

    Gorsuch, Richard L

    2013-01-01

    Comprehensive and comprehensible, this classic covers the basic and advanced topics essential for using factor analysis as a scientific tool in psychology, education, sociology, and related areas. Emphasizing the usefulness of the techniques, it presents sufficient mathematical background for understanding and sufficient discussion of applications for effective use. This includes not only theory but also the empirical evaluations of the importance of mathematical distinctions for applied scientific analysis.

  7. Caractérisation rhéologique et modélisation structurelle des systèmes argile-polymère. Application aux fluides de forage Rheometry and Structural Modelling of Clay-Polymer Systems. Application to Drilling Fluids

    Directory of Open Access Journals (Sweden)

    Cartalos U.

    2006-12-01

    Full Text Available Le comportement rhéologique des systèmes argile-polymère couramment utilisés dans les formulations des fluides de forage est examiné dans cet article. Un protocole d'essai adapté à leur nature thixotrope qui permet d'effectuer des mesures reproductibles est mis au point. Les propriétés intrinsèques du matériau sont ainsi déterminées sur toute la gamme de sollicitations : du comportement solide aux faibles déformations au comportement fluide aux taux de déformations intenses. Il est montré que ces systèmes sont caractérisés par des temps de restructuration longs, par des rhéogrammes en régime permanent présentant un minimum de contrainte et par des dépassements importants de la contrainte lors des essais transitoires. Ces effets peuvent être complètement masqués par des procédures d'essai préconisés par les normes en vigueur dans le forage. Une loi de comportement structurelle récente qui relie les propriétés thixotropes et viscoélastiques du matériau aux mécanismes de création et de rupture des flocs peut reproduire l'ensemble des phénomènes observés. Sa capacité de décrire le changement de structure au sein du fluide sous écoulement ou au repos et les variations associées de la contrainte permet d'envisager une meilleure modélisation de l'hydraulique du forage. The rheological behaviour of clay-polymer systems that are currently used in the formulation of drilling fluids was studied. A specific experimental procedure was used to account for thixotropic effects and obtain, thus, reproducible results. In this way it was possible to determine intrinsic properties in the whole range, from solid behaviour below the yield stress to liquid behaviour at very high shear. These systems are shown to be characterised by very long time scales of structure recovery, by the existence of a minimum shear stress in the steady state flow curve and by important stress overshoots in transient flows. These effects can be

  8. The role of the matrix-edge dynamics of amphibian conservation in tropical montane fragmented landscapes La dinámica del borde-matriz en bosques mesófilos de montaña fragmentados y su papel en la conservación de los anfibios

    Directory of Open Access Journals (Sweden)

    Georgina Santos-Barrera

    2011-06-01

    el efecto de borde y la matriz es indispensable para entender el proceso de colonización de numerosos grupos de organismos en ecosistemas manejados o perturbados. Estudiamos la dinámica de 7 especies de ranas y salamandras que habitan en 8 ecotonos de bosque mesófilo de montaña que se encuentran adyacentes a zonas de cultivo de café y maíz en el estado de Guerrero, México. Tras un esfuerzo de captura de 196 horas/hombre a lo largo de 72 trayectos registramos 58 individuos de anfibios pertenecientes a 7 especies y se midieron 12 variables ambientales y estructurales. Se observó que la diversidad y la abundancia de los anfibios dependen del tipo de matriz adyacente al bosque. El interior del bosque proporciona a los anfibios mayor humedad relativa, mayor cobertura del dosel y de hojarasca. Estos resultados muestran que los anfibios prefieren los cafetales sobre los cultivos de maíz, posiblemente por la presencia de elementos de la vegetación original en los cafetales de sombra y a lo reducido de su manejo en comparación a los cultivos de maíz. Los cafetales reducen los efectos del borde en estos fragmentos de bosque mesófilo, mejoran la conectividad entre ellos e incrementan la calidad del ambiente para las especies que habitan en el interior del bosque. La investigación sobre el manejo de fauna silvestre debería tomar en cuenta este tipo de hallazgos para comprender la dinámica de las especies que se mueven a lo largo de ecotonos antropogénico-naturales.

  9. Milk contamination in different points of the dairy process. ii mesophilic, psychrotrophic and proteolytic microorganisms/ Contaminação do leite em diferentes pontos da produção leiteira: ii microrganismos mesófilos, psicrotróficos e proteolíticos

    Directory of Open Access Journals (Sweden)

    Viviane Vieira Gusmão

    2004-05-01

    , analisando diversos pontos do processo. Determinou-se a contagem de microrganismos aeróbios mesófilos (48hs a 35ºC, psicrotróficos (25hs a 21ºC, psicrotróficos proteolíticos (72 hs a 22ºC e as características morfotintoriais da microbiota psicrotrófica proteolítica predominante. Os principais pontos de contaminação por psicrotróficos foram a água residual de latões, tanques de expansão e tetos higienizados inadequadamente, sendo que os psicrotróficos proteolíticos predominam nos latões e tetos. Bacilos Gram negativos representaram 45% da microbiota proteolítica de todo o processo de produção, no leite refrigerado corresponderam a 69% dos psicrotróficos proteolíticos encontrados e ainda predominaram nos tetos higienizados, teteiras, água residual de latões e tanques de expansão. As contagens de psicrotróficos superaram as de mesófilos em leite refrigerado, mostrando que a pesquisa de psicrotróficos é ideal para avaliar a real carga microbiana do leite refrigerado. Como a refrigeração a 4oC não inibe o crescimento deste grupo de microrganismos, deve-se evitar sua incorporação ao leite durante a produção, havendo necessidade da adoção de boas práticas de manejo em todo o processo produtivo.

  10. LES PROLIFÉRATIONS VÉGÉTALES AQUATIQUES EN FRANCE :CARACTÈRES BIOLOGIQUES ET ÉCOLOGIQUES DES PRINCIPALESESPÈCES ET MILIEUX PROPICES.II. IMPACT SUR LES ÉCOSYSTÈMES ET INTÉRÊT POUR LECONTRÔLE DES PROLIFÉRATIONS.

    Directory of Open Access Journals (Sweden)

    PELTRE M. C.

    2002-04-01

    Full Text Available De nombreux milieux aquatiques de nature et d’usages divers sont plus ou moins régulièrement le siège de proliférations végétales. Le contrôle de celles-ci pose des difficultés, principalement liées à l’appréciation des déséquilibres induits dans le milieu et à celle des nuisances anthropiques qui en découlent. En effet, dans le cas d’un constat de prolifération, source et témoin d’un dysfonctionnement, le manque d’analyse objective des situations, les limites de compatibilité des différents usages du milieu, la mauvaise connaissance des végétaux en cause et du fonctionnement écologique des milieux sont autant de freins à une gestion cohérente de ces sites. La présentation de quelques exemples, à travers différents modes connus de gestion des milieux et de régulation des peuplements végétaux (notamment les méthodes mécaniques, chimiques ou biologiques, illustre la mise à profit des connaissances sur les caractéristiques biologiques et écologiques des macrophytes proliférants. La mise en Oeuvre de cette démarche devrait permettre à l’avenir de mieux évaluer les perturbations induites par les proliférations, d’intervenir si nécessaire dans de meilleures conditions, en vue d’envisager une restauration des écosystèmes concernés compatible avec une meilleure satisfaction des différents usages.

  11. Angiotensin-converting enzyme genotype is not a significant genetic risk factor for idiopathic nephrotic syndrome in Croatian children.

    Science.gov (United States)

    Batinić, Danko; Sertić, Jadranka; Ćorić, Marijana; Konjevoda, Paško; Batinić, Danica; Milošević, Danko

    2015-01-01

    The association of the angiotensin-converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism with idiopathic nephrotic syndrome (INS) is controversial. Only scarce information on European populations is available. The aim of the study was to investigate the distribution of the ACE gene I/D polymorphism and its impact on INS in children from Croatia. Ninety-five children with INS were investigated: 30 with minimal change disease (MCD), 35 with mesangial proliferative glomerulonephritis (MesPGN) and 30 with focal segmental glomerulosclerosis (FSGS). The control group consisted of 73 healthy adults. ACE gene was analyzed using the PCR method. The results were correlated with clinical features, renal morphology and response to immunosuppresive therapy. There was no correlation of ACE genotype with gender, age of the disease onset, level of proteinuria, presence of hematuria or hypertension, and GFR at onset of the disease. No statistically significant differences in ACE genotype or allele frequencies between the controls and whole group of patients, MCD group, MesPGN group, FSGS group, steroid sensitive (SS) patients, steroid resistant (SR) patients, as well as each other, were found, although DD genotype tended to be more frequent in FSGS patients, SR patients, and frequent relapsers. Among 11 children treated with cyclophosphamide the D allele was significantly higher among non-responders (p = 0.003). DD genotype is not a genetic risk factor for acquiring INS nor significant phenotype modifier regarding to clinical and pathohistological picture and response to steroids in Croatian children. The potential application of ACE genotyping in predicting cyclophosphamide response deserves further investigation. © 2015 S. Karger AG, Basel.

  12. EVALUATION DE L’IMPACT ENVIRONNEMENTAL : GeneSys-Colza : un modèle des effets à moyen et à long terme des systèmes de culture sur les flux de gènes entre champs de colza et repousses dans un espace agricole

    Directory of Open Access Journals (Sweden)

    Colbach Nathalie

    2000-07-01

    Full Text Available On a beaucoup parlé, lors de l’examen des demandes d’autorisation de mise en culture de variétés transgéniques de colza, des risques d’hybridation interspécifique du colza avec les crucifères sauvages, et d’introgression de transgènes dans les espèces adventices [1, 2]. Les flux de gènes intraspécifiques ont moins attiré l’attention du grand public; ils sont pourtant bien plus probables. Les transgènes peuvent être disséminés dans le temps, par l’intermédiaire de repousses de colza apparaissant dans les cultures suivant les variétés transgéniques, à cause de la perte d’une partie des graines produites par les cultures de colza avant ou pendant la récolte [3, 4], et dans l’espace, par l’intermédiaire de semences et de pollen disséminés par le vent ou d’autres vecteurs tels que les oiseaux ou les insectes [5-8]. Les semences dispersées peuvent produire directement des repousses de colza dans des champs voisins, tandis que le pollen peut transmettre le transgène en fécondant des plantes de colza présentes dans ces autres champs. Ce flux de gènes peut être à l’origine de différents problèmes tels que l’apparition de repousses de colza résistantes aux herbicides, difficiles à éliminer lorsqu’il s’agit d’un transgène de résistance à un herbicide, ou la pollution de récoltes de colza classique par le transgène, quelle que soit sa nature, et l’impossibilité d’écouler ces récoltes dans une filière « non-OGM ». Il est donc apparu nécessaire et urgent de mieux évaluer ce risque et d’identifier les moyens de le maîtriser. Les premiers éléments de réponse ont été donnés par les plates-formes « plantes transgéniques » des instituts techniques [9, 10]; cependant, ces plates-formes sont limitées dans le temps et l’espace et il n’est pas possible d’y rendre compte de la variabilité régionale des systèmes de culture et de leurs effets sur le devenir des

  13. Human factors

    International Nuclear Information System (INIS)

    Brown, G.J.

    1991-01-01

    Recent reactor accidents have spurred the major review, described here, of the contribution of operator personnel to safety in Scottish Nuclear Power Stations. The review aims to identify factors leading to the Chernobyl accident and take preventative measures to avoid possible recurrence. Scottish Nuclear power stations aim to remove the operator from a position where failure to take correct action could lead to a safety hazard. Instead operators concentrate on routine and breakdown maintenance and measures are taken to minimize the probability of operator error. The review concluded that most safety procedures were satisfactory but safety analysis supported by good design practices may offer a significant reduction in the risk of operator error. (UK)

  14. La expresión neonatal de microRNAs como potenciales biomarcadores tempranos del síndrome metabólico

    OpenAIRE

    P. Rodil-García; L.A. Salazar-Olivo

    2015-01-01

    El síndrome metabólico es un trastorno caracterizado por obesidad, hipertensión arterial, hipercolesterolemia, hiperlipidemia y alteraciones en el metabolismo de la glucosa, y constituye un factor de riesgo para el desarrollo de diabetes y enfermedades cardiovasculares. Las condiciones nutricionales, hormonales y metabólicas de la madre durante el embarazo y el posparto temprano pueden condicionar el desarrollo de enfermedades metabólicas en la vida adulta de los hijos. Este concepto, llamado...

  15. Trends in e-learning and factors for successful and effective introduction of e-learning in adult education in Slovenia

    Directory of Open Access Journals (Sweden)

    Lea Bregar

    2011-12-01

    Full Text Available E-learning provides a number of advantages for adult education, which derive from its greater flexibility regarding time, space, pace, content and learning methods. Today e-learning manifests itself in a great variety of implementation program- mes, which are based on various teaching models, employ a wide range of technological tools, reflect different roles of educational institutions management and different institutional frameworks. The versatility and the dynamic and complex character of e-learning are the reasons that the basic characteristics of this development are hidden in the multitude of current manifestations, making recognition of key development trends a difficult task. The article deals with the developmental characteristics of e-learning, then analyses the state of adult e-learning in Slovenia, and finally presents the factors which – at the present e-learning level in Slovenia – appear to be decisive for a successful and effective introduction of e-learning in adult education.

  16. Las PyMES y su integración

    OpenAIRE

    Surraco, Genoveva

    2008-01-01

    En líneas generales y atendiendo a las diferentes conceptualizaciones en torno a estos agrupamientos de pequeñas y medianas empresas, se puede sintetizar que los distritos productivos son sistemas regionales, constituidos por agrupaciones de empresas altamente especializadas, con cierta proximidad geográfica, problemáticas productivas similares o complementarias; que se asocian para lograr ventajas competitivas, integración de cadenas productivas, incorporación de nuevas tecnologías, el agreg...

  17. TICs y procesos productivos en PyMES

    OpenAIRE

    De Giusti, Armando Eduardo; Pesado, Patricia Mabel; Naiouf, Marcelo; Thomas, Pablo Javier; Estrebou, César Armando; Galdámez, Nicolás; Moralejo, Lucrecia; Delía, Lisandro Nahuel

    2008-01-01

    En el marco del Proyecto PAE EICAR, el Instituto de Investigación y Desarrollo en Informática participa en los temas específicos de “Planificación, supervisión y optimización de la producción en Pymes” y “Tecnología en Gestión de stocks (fijos y en movimiento)” en conjunto con la Facultad de Ciencias Económicas de la UNLP, la Universidad Nacional de La Matanza y la Universidad del Centro de la Pcia. de Bs. As. y de la creación de la “RED (EICAR) de Centros Regionales de investigación y desarr...

  18. Les poèmes ragusains de Dejan Despic

    OpenAIRE

    Stefanović Ana

    2005-01-01

    (francuski) Les œuvres de Dejan Despic (1930), inspirées par Dubrovnik: Jadranski soneti op. 17 (1951-1954), Dubrovacki divertimento op. 18 (1952) et Dubrovacki kanconijer op. 96 (1989), révèlent, outre leur thème commun, une parenté supplémentaire importante. Elles sont incitées et, d'une manière essentielle, médiatisées par la poésie: soit par les vers de Jovan Ducic (1871-1943), poète du Parnasse et symbolisme serbe, soit par la poésie pétrarquiste ragusaine. Or, ces compositions ne se mon...

  19. Les poèmes ragusains de Dejan Despic

    Directory of Open Access Journals (Sweden)

    Stefanović Ana

    2005-01-01

    Full Text Available (francuski Les œuvres de Dejan Despic (1930, inspirées par Dubrovnik: Jadranski soneti op. 17 (1951-1954, Dubrovacki divertimento op. 18 (1952 et Dubrovacki kanconijer op. 96 (1989, révèlent, outre leur thème commun, une parenté supplémentaire importante. Elles sont incitées et, d'une manière essentielle, médiatisées par la poésie: soit par les vers de Jovan Ducic (1871-1943, poète du Parnasse et symbolisme serbe, soit par la poésie pétrarquiste ragusaine. Or, ces compositions ne se montrent pas seulement en tant qu` issues de l`inspiration par la poésie sur Dubrovnik, mais aussi d'un conditionnement spirituel plus profond: de l`inspiration poétique du compositeur lui-même par Dubrovnik. C`est le sentiment poétique du monde, en tant que constante de la vision créatrice de Dejan Despic, qui provient de cette inspiration particulière. Ce monde ragusain du compositeur est le monde classique dans une signification universelle du concept, selon la nature même du milieu évoqué. Or, cela n implique pas une monochromie stylistique des compositions considérées. Au contraire, les perspectives musicales de l`impressionnisme, du néoclassicisme, voire, de la néorennaissance, varient ce cadre stylistique général, tout en marquant les traits distincts d'une poétique de composition très individualisée.

  20. Minimum Efficient Scale (MES) and preferred scale of container terminals

    OpenAIRE

    Kaselimi, Evangelia N.; Notteboom, Theo E.; Pallis, Athanasios A.; Farrell, Sheila

    2011-01-01

    Abstract: The decision on the scale of a port terminal affects the terminals managerial, operational and competitive position in all the phases of its life. It also affects competition structures in the port in which the terminal is operating, and has a potential impact on other terminals. Port authorities and terminal operators need to know the scale of the terminal when engaging in concession agreements. In economic theory the scale of a plant/firm is typically defined in relation to the Mi...

  1. systèmes de santé

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

    d'autopsies verbales — entretiens réalisés après un décès — laisse supposer que les oublis volontaires et la partialité dissimu- lent peut-être les causes véritables des décès des femmes. Bien qu'au Karnataka, près des deux tiers des femmes enceintes souffrent d'anémie en raison de la malnutri- tion, ce trouble de santé, ...

  2. Promouvoir des systèmes alimentaires sains

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

    fdieudonne

    d'hypertension, de maladie cardiaque, de diabète et d'accidents vasculaires cérébraux. Le CRDI contribut aux efforts déployés pour réduire la consommation de sel, de sucre et de gras : Au Costa Rica, des objectifs de réduction de la consommation de sel ont été établis en s'appuyant sur les résultats de la recherche.

  3. La mémoire des fantômes

    OpenAIRE

    Tabois, Stéphanie

    2012-01-01

    Dans les univers domestiques, les « objets-souvenir » rapportés de voyages, au même titre que les trophées sportifs ou les photographies, représentent autant de traces matérielles des actions accomplies et des expériences passées. Examinant les rapports qu’un groupe déraciné entretient avec ses objets affectifs, cet article se donne pour objectif de montrer que la perte (temporaire ou définitive) de certains biens n’entrave toutefois pas nécessairement leur appropriation mnésique. Le fait de ...

  4. LES PROBLÈMES AGRICOLE DE LA GUINÉE

    Directory of Open Access Journals (Sweden)

    Ousmane Kobele-Keita

    2010-01-01

    Full Text Available Dans le présent article il est indiqué les caracteristiques agricoles de la République de Guinée comme facteur déterminant de son économie. L’analyse concerne les conditions pedo-climatiques de la Guinée, sa situation géographique, demographique, économique, mais aussi les aspects culturels et juridiques de la vie paysanne de ce pays de l’Afrique de l’Ouest. L’accent a été mis également sur les difficultés que rencontre l’agriculture guinéenne tout en soulignant les voies et moyens á suivre pour développer cette agriculture.

  5. Systèmes de recommandation dans des contextes industriels

    OpenAIRE

    Meyer , Frank

    2012-01-01

    This thesis deals with automatic recommendation systems. Automatic recommendation systems are systems that allow, through data mining techniques, to recommend automatically to users, based on their past consumption, items that may interest them. These systems allow for example to increase sales on e-commerce websites: the Amazon site has a marketing strategy based mainly on the recommendation. Amazon has popularized the use of automatic recommendation based on the recommendation function that...

  6. Tesis de Posgrado: Los factores de competitividad en las pequeñas y medianas empresas y la Responsabilidad Social Empresaria

    Directory of Open Access Journals (Sweden)

    Juan Pablo del Barco

    2016-03-01

    Full Text Available El debate vinculado a la actuación de la Responsabilidad Social Empresaria (RSE se está difundiendo en manera siempre mayor y se está buscando en muchos casos pasar de una visión moral y ética de la cuestión a una más estratégica y organizada. Es para destacar que todavía muchas empresas aplican prácticas de RSE en forma estática, desconectada y fragmentada respecto a los objetivos del negocio. La investigación se centraliza en las PyMEs, considerando que la realidad y características de estas empresas son diversas a la de las grandes empresas. El trabajo comienza con un análisis de las contribuciones de la doctrina nacional e internacional, terminando con una investigación empírica desarrollada sobre una muestra de empresas de mediana dimensión de dos regiones, la región delle Marche en Italia, y la provincia de Santa Fe en Argentina. El objetivo principal de la presente investigación es el de comprender cómo y en qué modalidad se puede integrar la RSE en la estrategia empresaria de las PyMEs. Considerando a la RSE como un factor que aporta beneficios a la sociedad y mejora la capacidad competitiva. Con los resultados se ha demostrado que las PyMEs de ambas regiones desarrollan acciones o prácticas de RSE. Sin embargo, estas prácticas frecuentemente son realizadas en forma aisladas, sin una estrategia o gestión integral de RSE. Las diversas acciones que realizan estas empresas pueden ser reagrupadas principalmente en cuatro áreas bien diferenciadas, en las cuales está demostrado su enfoque a la responsabilidad social, en la mayor parte de los casos, sin que estas empresas sean conscientes (es decir, realizando una RSE implícita, informal y silenciosa; las mismas son: los empleados, producto/calidad, el medioambiente y la cadena de valor (proveedores y clientes.

  7. Incidencia del factor de riesgo sedentarismo en personas de la comunidad de Buena Vista.

    Directory of Open Access Journals (Sweden)

    Mirtha Domínguez Ceballo

    2007-09-01

    Full Text Available La experiencia está basada en un sistema de acciones que incluye, además de un sistema de ejercicios, actividades de promoción y educación para la salud con la finalidad de reducir el factor de riesgo sedentarismo y con ello su incidencia en las enfermedades cardiovasculares en la comunidad. Todo el proceso de investigación se desarrolló del mes de septiembre de 2004 a febrero del presente año. Para ello se utilizó una muestra de 23 personas a quienes mediante la observación, medición y aplicación se le realizaron encuestas y test de comprobación al principio y al final. Se apreció que el estilo de vida sedentario de estas personas influía en la aparición de enfermedades cardiovasculares al traer asociados otros factores, mientras un estilo de vida activo, a partir de la introducción de un sistema de conocimientos y habilidades, propiciaron resultados positivos y también que se incorporaran de forma consciente y activa a la actividad hasta llegar a un estado de independencia y conocimiento de ella que les permitió ser promotores de la misma en la comunidad con el ejemplo personal.

  8. Poliglobulia como factor de riesgo en Hipertensión Arterial

    Directory of Open Access Journals (Sweden)

    María Ximena Tapia Paguay

    2017-05-01

    la relación de Poliglobulia como factor de riesgo para hipertensión arterial en habitantes de ciudades de alturas superior a 2500msnm; Estudio descriptivo, transversal, no experimental. Incluye 980 personas de 20 años y más. Se tomó muestras de sangre para medir concentración de hemoglobina y hematocrito. La presión arterial se cuantificó tres veces por semana durante un mes (en horario específico a pacientes con poliglobulia, los resultados: 53,7% mujeres y 42,3% hombres, 12,2% tuvieron poliglobulia, de los cuales 60% fueron hombres mayores de 40 años. En presión arterial, 72 fueron hombres: 76,4% con prehipertensión, 23,6% estaban hipertensos. En mujeres con poliglobulia 66.7% fueron prehipertensas 33.3% tenían hipertensión, como conclusión: El incremento de hematocrito ocasiona disminución del flujo sanguíneo, favorece la resistencia arterial y aumenta las cifras tensionales. Se recomienda evaluar en los pacientes hipertensos la presencia de poliglobulia como factor de riesgo.

  9. Factores asociados y consecuencias clínicas de la anemia post trasplante renal

    Directory of Open Access Journals (Sweden)

    Mónica Freiberg

    2013-04-01

    Full Text Available Un porcentaje considerable de pacientes presentan anemia post trasplante renal. Su origen es multifactorial y sus principales etiologías dependen de la etapa post trasplante que se considere. Estudiamos en un grupo de 134 pacientes los factores asociados con anemia tardía (6 meses post trasplante y sus implicaciones clínicas a mediano plazo. En el análisis de regresión múltiple, la duración de la oliguria post trasplante y el número de episodios de rechazo fueron las variables significativamente asociadas con esta complicación. La supervivencia del órgano mostró una diferencia significativa a los 36 meses entre los grupos (83% en los anémicos versus 96% de los no anémicos p < 0.01. No observamos diferencias en mortalidad o eventos cardiovasculares. Concluimos que la presencia de anemia al sexto mes post trasplante renal está independiente y significativamente asociada con factores que condicionan la masa renal funcionante que explicarían además la menor supervivencia del injerto renal observada en estos pacientes.

  10. Distribución espacial de la macrofauna edáfica en bosque mesófilo, bosque secundario y pastizal en la reserva La Cortadura, Coatepec, Veracruz, México Spatial distribution of soil macrofauna in cloud forest, secondary forest and grassland in La Cortadura reserve, Coatepec, Veracruz, Mexico

    Directory of Open Access Journals (Sweden)

    Isis N. De la Rosa

    2012-03-01

    Full Text Available La conversión de un área de bosque para la agricultura o el pastoreo homogeniza las propiedades del suelo y las comunidades de macroinvertebrados. Este trabajo estudió si la diversidad (H', densidad y heterogeneidad espacial (tamaño de parche de macroinvertebrados de hojarasca y suelo se recuperan en una secuencia sucesional pastizal (Pas-bosque secundario (Bsec-bosque mesófilo maduro (BMM. En el sustrato hojarasca se observó un gradiente de aumento para todas las variables estudiadas en la secuencia Pas-Bsec-BMM. Sin embargo, este patrón no se presentó en el suelo, ya que la mayor diversidad y densidad (por taxón y total se encontraron en el Bsec. Mediante un análisis de variografía, en la hojarasca se encontraron distribuciones espaciales heterogéneas de los macroinvertebrados en ambos bosques, mientras que en el pastizal la distribución fue homogénea, lo que apoya la idea de que el disturbio va acompañado de una homogenización espacial de las comunidades de macroinvertebrados, pero la restructuración espacial se recupera en la sucesión temprana. En el suelo de los 3 sitios, la distribución de todas las variables fue en parches (5 a 60 m de diámetro, pero no se encontró disminución en la heterogeneidad espacial predicha para la secuencia Pas-Bsec-BMM.The conversion of forest to agriculture or pasture homogenizes soil properties, including the communities of macroinvertebrates. This study examined whether the diversity (H', density and spatial heterogeneity (patch size of litter and soil macroinvertebrate recover through the secondary successional sequence pasture (Pas-secondary forest (Bsec- mature cloud forest (BMM. In the litter an increasing gradient for all variables was observed through the successional sequence. However, this pattern was not present in the soil, where the highest diversity and density (per taxon and total were found in the Bsec. Using variography, we found heterogeneous spatial distributions of

  11. Quantification of endogenous metabolites by the postcolumn infused-internal standard method combined with matrix normalization factor in liquid chromatography-electrospray ionization tandem mass spectrometry.

    Science.gov (United States)

    Liao, Hsiao-Wei; Chen, Guan-Yuan; Wu, Ming-Shiang; Liao, Wei-Chih; Tsai, I-Lin; Kuo, Ching-Hua

    2015-01-02

    Quantification of endogenous metabolites has enabled the discovery of biomarkers for diagnosis and provided for an understanding of disease etiology. The standard addition and stable isotope labeled-internal standard (SIL-IS) methods are currently the most widely used approaches to quantifying endogenous metabolites, but both have some limitations for clinical measurement. In this study, we developed a new approach for endogenous metabolite quantification by the postcolumn infused-internal standard (PCI-IS) method combined with the matrix normalization factor (MNF) method. MNF was used to correct the difference in MEs between standard solution and biofluids, and PCI-IS additionally tailored the correction of the MEs for individual samples. Androstenedione and testosterone were selected as test articles to verify this new approach to quantifying metabolites in plasma. The repeatability (n=4 runs) and intermediate precision (n=3 days) in terms of the peak area of androstenedione and testosterone at all tested concentrations were all less than 11% relative standard deviation (RSD). The accuracy test revealed that the recoveries were between 95.72% and 113.46%. The concentrations of androstenedione and testosterone in fifty plasma samples obtained from healthy volunteers were quantified by the PCI-IS combined with the MNF method, and the quantification results were compared with the results of the SIL-IS method. The Pearson correlation test showed that the correlation coefficient was 0.98 for both androstenedione and testosterone. We demonstrated that the PCI-IS combined with the MNF method is an effective and accurate method for quantifying endogenous metabolites. Copyright © 2014 Elsevier B.V. All rights reserved.

  12. Incidencia y factores de riesgo para adquirir diarrea aguda en una comunidad rural de la selva peruana

    Directory of Open Access Journals (Sweden)

    César Henríquez Camacho

    2002-04-01

    Full Text Available Objetivo: Determinar la incidencia y factores de riesgo para adquirir diarrea aguda en una comunidad rural localizada en la selva del departamento de San Martín, Perú. Material y métodos: Una cohorte de 119 personas fue seleccionada al azar entre la población de 446 habitantes y seguida diariamente por un mes entre enero y febrero de 1999, buscando casos de diarrea aguda, definida como tres ó más cámaras de deposiciones al día por no más de 3 días. Un estudio caso control pareado fue diseñado para determinar los factores de riesgo para adquirir diarrea. Resultados: Fueron observados 18 casos de diarrea aguda; la incidencia fue 15.1 casos por 100 personas-mes (IC 95%: 9.45-23.12. La edad media de los casos fue de 10.7 años (rango: 1-34 años y 66% de los casos fueron niños menores de 10 años de edad. Los factores de riesgo para adquirir diarrea fueron: consumo de alimentos crudos, RR: 2.2 (IC 95%: 1.12-4.33, consumo de alimentos no lavados, RR: 4.47 (IC 95%: 1.56-12.82, falta de lavado de manos antes de alimentarse, RR: 9.61 (95% IC: 1.44-64.16, consumo de agua no hervida, RR: 4.52 (IC 95%: 1.23-16.65 y alimentación fuera de casa, RR: 2.2 (IC 95%: 1.51-3.20. La diferencia en el número promedio (DE de personas que vivían por casa entre casos y controles fue de 4.38 (1.03 vs. 3.22 (0.54, p=0.0003, respectivamente. No hubo diferencia en el tiempo de residencia en la comunidad entre casos y controles, media de 5.61 ( 5.04 años vs. 8.83 (9.79, p=0.5747. Conclusiones: Diarrea aguda es un problema de salud pública en la selva de San Martín. Hacinamiento, carencia de saneamiento y pobres prácticas higiénicas son los responsables para adquirir diarrea aguda en esta comunidad de bajo nivel socioeconómico. Campañas educativas y mejora en las condiciones sanitarias son claramente necesarias para superar este problema.

  13. Heart disease - risk factors

    Science.gov (United States)

    Heart disease - prevention; CVD - risk factors; Cardiovascular disease - risk factors; Coronary artery disease - risk factors; CAD - risk ... a certain health condition. Some risk factors for heart disease you cannot change, but some you can. ...

  14. Desarrollo de la competencia resolución de problemas en el área de matemática en el nivel educativo primario de Uruguay. Factores asociados

    OpenAIRE

    Luaces Bernasconi, Oscar A.

    2007-01-01

    La ponencia se basa en la tesis, presentada por quien suscribe, para la obtención del título de Maestría en Evaluación de Políticas Públicas, en la Universidad ORT de Uruguay, en el mes de abril del año 2004. El desarrollo de la investigación estuvo dirigido al área de Educación y analizó la incidencia de factores asociados al desarrollo, en el área de Matemática, de la competencia Resolución de Problemas. La investigación partió de un modelo teórico de función de producción educativ...

  15. Efectos del alta hospitalaria temprana en el periodo posparto en la Clínica del Prado, Medellín, Colombia

    OpenAIRE

    Cardona-Ospina, Arturo; Ordoñez-Molina, Jaime; Vásquez-Trespalacios, Elsa María; Universidad CES; Mestra-Palomino, Laureano; García-Posada, Raúl Alejandro

    2014-01-01

    Problema: evaluar el efecto del alta hospitalaria temprana en pacientes sanas. Objetivo: establecerel riesgo de complicaciones en pacientes obstétricas con alta temprana respecto a aquellasque egresan después de 24 horas. Métodos: cohorte prospectiva con seguimiento postparto.Resultados: 750 pacientes, edad promedio de 24,5 años y edad gestacional de 38,5 semanas.El porcentaje de consulta luego del alta fue 2,0 %. El efecto del alta hospitalaria tempranasobre la necesidad de consultar luego d...

  16. Evidence that platelet-derived growth factor may be a novel endogenous pyrogen in the central nervous system.

    Science.gov (United States)

    Pelá, I R; Ferreira, M E; Melo, M C; Silva, C A; Coelho, M M; Valenzuela, C F

    2000-05-01

    Platelet-derived growth factor (PDGF) exerts neurotrophic and neuromodulatory actions in the mammalian central nervous system (CNS). Like the cytokines, PDGF primarily signals through tyrosine phosphorylation-dependent pathways that activate multiple intracellular molecules including Janus family kinases. We previously showed that microinjection of PDGF-BB into the lateral ventricle induced a febrile response in rats that was reduced by pretreatment with Win 41662, a potent inhibitor of PDGF receptors (Pelá IR, Ferreira MES, Melo MCC, Silva CAA, and Valenzuela CF. Ann NY Acad Sci 856: 289-293, 1998). In this study, we further characterized the role of PDGF-BB in the febrile response in rats. Microinjection of PDGF-BB into the third ventricle produced a dose-dependent increase in colonic temperature that peaked 3-4 h postinjection. Win 41662 attenuated fever induced by intraperitoneal injection of bacterial lipopolysaccharide, suggesting that endogenous PDGF participates in the febrile response to this exogenous pyrogen. Importantly, febrile responses induced by tumor necrosis factor-alpha, interleukin-1beta, and interleukin-6 were unchanged by Win 41662. Both indomethacin and dexamethasone blocked the PDGF-BB-induced increase in colonic temperature, and, therefore, we postulate that PDGF-BB may act via prostaglandin- and/or inducible enzyme-dependent pathways. Thus our findings suggest that PDGF-BB is an endogenous CNS mediator of the febrile response in rats.

  17. LABOR SUBSTITUTABILITY IN LABOR INTENSIVE AGRICULTURE AND TECHNOLOGICAL CHANGE IN THE PRESENCE OF FOREIGN LABOR

    OpenAIRE

    Napasintuwong, Orachos; Emerson, Robert D.

    2004-01-01

    The Morishima elasticity of substitution (MES) is estimated to address factor substitutability in Florida agriculture during 1960-1999. By adopting a profit maximization model of induced innovation theory, the MES's between hired and self-employed labor and the MES's between labor and capital provide implications for future immigration policies.

  18. Factores de riesgo y protectores en el suicidio: un estudio de casos y controles mediante la autopsia psicológica

    Directory of Open Access Journals (Sweden)

    José M. Antón-San-Martín

    2013-10-01

    Full Text Available Las tasas, los métodos y algunos de los factores de riesgo en el suicidio parecen depender de las diferencias geográficas y culturales, lo que implica la elaboración de estudios en zonas específicas de alto riesgo cara a la implementación de estrategias preventivas. Este estudio busca determinar los factores de riesgo y protectores en el suicidio en la Comarca de Antequera-Málaga (España. Se realiza en un estudio de caso y controles mediante la autopsia psicológica con 40 casos de suicidio y 80 controles poblacionales emparejados en género, edad y zona de residencia. El modelo multivariante hallado está compuesto por los siguientes factores: el presentar antecedentes familiares de suicidio y agregación de desordenes mentales en la familia, un diagnóstico de trastorno de la personalidad y conflictos familiares en el mes previo al suicidio. Estos factores permiten discriminar poblaciones de riesgo cara a la implementación de programas preventivos.

  19. Factores asociados al maltrato del adulto mayor de Antioquia, 2012

    Directory of Open Access Journals (Sweden)

    Sara M. Cano

    2015-07-01

    Full Text Available Objetivo: determinar los factores asociados al maltrato del adulto mayor del departamento de Antioquia en el año 2012. Metodología: mediante estudio descriptivo transversal, se caracterizaron los factores demográficos, económicos y de salud mental de la población adulta mayor de Antioquia para el año 2012, con el fin de aportar al análisis de la situación de salud y condiciones de vida del adulto mayor. El estudio se basó en los resultados del instrumento aplicado por la Universidad ces a 4.215 adultos de sesenta años y más de edad, en el cual se indagó sobre percepción de maltrato, funcionamiento cognitivo, nivel de depresión, nivel de ansiedad, apoyo social, escala de recursos sociales, entre otras; los resultados se expandieron a 654.473 adultos del departamento. Resultados: el 72,8% de adultos del departamento son mujeres, 53,7% vive en Medellín, 55% tiene primaria incompleta, 72,9% pertenece a estratos socioeconómicos 1 y 2, 45,1% no registraron ingresos en el último mes, 26,3% tiene riesgo de depresión y 34,4% tiene riesgo de ansiedad, 2,5% reportó haber sufrido descuido, 5,0% necesidades afectivas ignoradas, 1,7% algún caso de agresión física, 0,4% agresión sexual y 1,3%, afirmó haber sufrido maltrato económico. Las variables estrato socioeconómico, tipo de vivienda, etnia, riesgo de depresión, riesgo de ansiedad, riesgo de deterioro cognitivo y red de apoyo fueron las que más ayudaron a explicar la presencia de maltrato. Conclusión: enfrentar este problema requiere de una atención integral a las necesidades de los adultos mayores, participación de todos los sectores de la sociedad y conciencia transgeneracional.

  20. Electroweak form factors

    International Nuclear Information System (INIS)

    Singh, S.K.

    2002-01-01

    The present status of electroweak nucleon form factors and the N - Δ transition form factors is reviewed. Particularly the determination of dipole mass M A in the axial vector form factor is discussed

  1. Risk Factors for Scleroderma

    Science.gov (United States)

    ... You are here: Home For Patients Risk Factors Risk Factors for Scleroderma The cause of scleroderma is ... what biological factors contribute to scleroderma pathogenesis. Genetic Risk Scleroderma does not tend to run in families ...

  2. Risk Factors and Prevention

    Science.gov (United States)

    ... Resources Risk Factors & Prevention Back to Patient Resources Risk Factors & Prevention Even people who look healthy and ... Blood Pressure , high cholesterol, diabetes, and thyroid disease. Risk Factors For Arrhythmias and Heart Disease The following ...

  3. Factors and factorizations of graphs proof techniques in factor theory

    CERN Document Server

    Akiyama, Jin

    2011-01-01

    This book chronicles the development of graph factors and factorizations. It pursues a comprehensive approach, addressing most of the important results from hundreds of findings over the last century. One of the main themes is the observation that many theorems can be proved using only a few standard proof techniques. This stands in marked contrast to the seemingly countless, complex proof techniques offered by the extant body of papers and books. In addition to covering the history and development of this area, the book offers conjectures and discusses open problems. It also includes numerous explanatory figures that enable readers to progressively and intuitively understand the most important notions and proofs in the area of factors and factorization.

  4. Assessment of the efficiency of SimPlate™ total plate count color indicator (TPC CI to quantify mesophilic aerobic microorganisms in pasteurized milk Avaliação da eficiência do SimPlate™ Total Plate Count Color Indicator (TPC CI para enumeração de microrganismos aeróbios mesófilos em leite pasteurizado

    Directory of Open Access Journals (Sweden)

    Luís Augusto Nero

    2002-01-01

    Full Text Available The SimPlate™ TPC CI system is a rapid method to count mesophilic aerobic microorganisms (MAM in foods, based on the use of resazurine to indicate bacterial growth. Its efficiency in pasteurized milk was evaluated using 142 pasteurized milk samples (38 type A, 43 type B and 61 type C collected in Londrina, PR. The standard plating method, using Plate Count Agar (PCA was used for comparison. The plates of both systems were incubated at 35ºC and read after 24h and 48h. The occurrence of false-positive and false-negative wells and the predominant microorganisms in them were also evaluated. The results were compared by simple correlation and mean variance analyses. The correlation (r and mean variance values were 0.6811 and 0.7583 for the results obtained after 24h, respectively, and 0.9126 and 0.0842 for the results obtained after 48h, respectively. These results indicate that the performance of the system increases when the plates are incubated for 48h. When the three types of milk were evaluated separately, these values were 0.9285 and 0.0817 for type A milk, 0.9231 and 0.0466 for type B milk and 0.7209 and 0.1082 for type C milk. These results indicate that the better the quality of the milk the better the performance of SimPlate™ TPC CI. False-negative wells, found more frequently in samples with high MAM counts, were caused by Gram positive microorganisms, poorly detected by the SimPlate™ TPC CI system because they grew slowly and had low reduction capacity. The results indicated a higher efficiency of the SimPlate™ TPC CI system in the reading at 48h.O sistema SimPlate™ TPC CI é um método rápido para enumeração de microrganismos aeróbios mesófilos (MAM em alimentos que utiliza a resazurina como substância indicadora de crescimento bacteriano. Para avaliar sua eficiência em leite pasteurizado, 142 amostras (38 de leite tipo A, 43 de leite tipo B e 61 de leite tipo C foram colhidas em Londrina, PR, e analisadas pelo Sim

  5. Contribution de la télédétection et des systèmes d'information géographique à la prise en compte du risque de prolifération des Aedes dans les zones humides de Bizerte (Nord de la Tunisie

    Directory of Open Access Journals (Sweden)

    Noura Brahmi

    2010-10-01

    Full Text Available Cette recherche a pour objectif d'aider les services d'hygiène en matière de cartographie numérique des biotopes potentiels à gîtes larvaires d'Aedes tout autour des zones humides de la région de Bizerte (Nord de la Tunisie. Ces zones humides subissent souvent des invasions inopinées de ces moustiques qui peuvent transmettre à l'homme des affections virales, microbiennes ou parasitaires (malaria, fièvre jaune, dengue…. Ces invasions posent des problèmes importants de nuisance qu'il importe d'analyser précisément si l'on veut se donner des chances de les enrayer. Pour lutter efficacement contre ces Aedes, il est nécessaire d'avoir une bonne connaissance de leur milieu et de leur écologie. C'est pourquoi, dans un premier temps, nous avons créé une base de données intégrée dans un système d'information géographique (SIG afin de définir, de localiser et d'analyser, par la superposition de plusieurs couches d'informations relatives au milieu naturel, les biotopes potentiels de prolifération des gîtes larvaires d'Aedes sur la carte d'aléa. Celle-ci constitue une source d'information nécessaire pour préciser le lien existant entre l'environnement et la nuisance, l'élément jugé vulnérable étant la population humaine. La carte du risque de nuisance est alors obtenue par croisement des cartes d'aléa et de vulnérabilité. La classe où le risque est fort concerne Menzel Bourguiba, Menzel Jmil, Menzel Abderrahmen, Tinja and Ghar el Melh. La classe correspondant à un risque moyen englobe toutes les villes et villages aux alentours du lac Ichkeul. La classe ne présentant pratiquement pas de risque couvre le bassin de l'oued Sejnene et la Garaât el Mabtouha.The major objective of this research is to provide concrete solutions numerical cartography of the potential biotopes to larval lodgings of Aedes all around the wetlands of the area of Bizerte (Northern of Tunisia. These zones are presented in the form of favourable

  6. Intelligent Energy Management for Plug-in Hybrid Electric Vehicles: The Role of ITS Infrastructure in Vehicle Electrification Gestion énergétique intelligente pour véhicules électriques hybrides rechargeables : rôle de l’infrastructure de systèmes de transport intelligents (STI dans l’électrification des véhicules

    Directory of Open Access Journals (Sweden)

    Marano V.

    2012-08-01

    lectriques hybrides, hybrides rechargeables et sur batteries. Ces technologies de propulsion, en même temps que les avancées en matière de télécommunication et de puissance de calcul, présentent le potentiel de rendre les véhicules particuliers et commerciaux plus efficaces sur le plan énergétique et plus écologiques. En particulier, les algorithmes de gestion énergétique sont partie intégrante des véhicules rechargeables et sont très importants pour atteindre les bénéfices de performances. Les performances optimales des algorithmes de gestion énergétique dépendent fortement de la capacité à prévoir la demande énergétique du véhicule. Les informations disponibles concernant l’environnement (température, humidité, vent, qualité de route, etc. et le trafic (densité du trafic, feux de circulation, etc. sont très importantes en termes de fonctionnement d’un véhicule à efficacité optimale. Le présent article passe brièvement en revue certaines technologies actuelles susceptibles d’aider à atteindre cet objectif d’efficacité optimale. En plus des informations disponibles issues des systèmes d’informations télématiques et géographiques, la connaissance de la demande de chargement projetée des véhicules sur le réseau électrique est nécessaire pour construire un dispositif de commande de gestion énergétique intelligent pour les futurs véhicules hybrides rechargeables et électriques. L’incidence du chargement de millions de véhicules à partir du réseau électrique pourrait être significative, sous forme d’une charge accrue des centrales électriques, des lignes de transmission et de distribution, des émissions et de l’aspect économique (des informations sont données et discutées dans le cas des USA. En conséquence, ces effets doivent être pris en considération d’une manière intelligente en commandant/programmant le chargement par l’intermédiaire d’un dispositif de commande répartie basé sur la communication.

  7. Epuration des eaux usées de raffinerie par le procédé biologique des lits bactériens. Problèmes pratiques de l'exploitation Purifying Refinery Waste Water by the Bacterial Bed Biological Process. Practical Operational Problems

    Directory of Open Access Journals (Sweden)

    Leising M.

    2006-11-01

    Full Text Available Le traitement des eaux de raffinerie par le procédé des Iits bactériens constitue une solution intéressante. Néanmoins, il subsiste actuellement des problèmes pratiques d'exploitation, en particulier la tendance au colmatage des lits bactériens existants qui résulte d'un encrassement incontrôlé des garnissages en vrac. Après étude, il est confirmé que les hydrocarbures, les matières en suspension contenus dans l'effluent et une mauvaise évacuation de la biomasse sont à l'origine du problème. L'examen des possibilités de lutte contre ce phénomène permet de distinguer des mesures curatives et des mesure préventives. Les mesures curatives qui consistent à régénérer le garnissage par augmentation de la charge hydraulique, nettoyage chimique, ou nettoyage manuel ne donnent pas entière satisfaction. Parmi tes mesures préventives, l'une des méthodes consiset à réduire la charge polluante de l'effluent : les eaux usées phénolées sont dessalées, les eaux de désulfuration du gas oil (DGO et fluid cracking catalytic (FCC sont strippées, les soudes sont réinjectées dans le brut, les huiles récupérées juste en aval de leur rejet, les traitements primaires sont optimisés, notamment par installation de racleurs et de tambours oléophiles sur les séparateurs API et par un meilleur choix de floculants. Néanmoins, l'expérience montre que cette méthode ne permet que de retarder l'échéance du colmatage. Le meilleur moyen de lutte réside dans le choix du matériau de garnissage, ainsi que le montrent les essais pilotes comparatifs réalisés par l'Institut National de Recherche Chimique Appliquée (lRCHA et Compagnie Française de Raffinage (CFR. Ces essais, qui ont portés sur l'évolution de la densité du garnissage, les performances épuratoires et la qualité des boues montrent que le Cloisonyle, garnissage tubulaire, est probablement le matériau le mieux adapté. Refinery waste-water treatment by trickling

  8. Amplification factor variable amplifier

    NARCIS (Netherlands)

    Akitsugu, Oshita; Nauta, Bram

    2007-01-01

    PROBLEM TO BE SOLVED: To provide an amplification factor variable amplifier capable of achieving temperature compensation of an amplification factor over a wide variable amplification factor range. ; SOLUTION: A Gilbert type amplification factor variable amplifier 11 amplifies an input signal and

  9. Amplification factor variable amplifier

    NARCIS (Netherlands)

    Akitsugu, Oshita; Nauta, Bram

    2010-01-01

    PROBLEM TO BE SOLVED: To provide an amplification factor variable amplifier capable of achieving temperature compensation of an amplification factor over a wide variable amplification factor range. ;SOLUTION: A Gilbert type amplification factor variable amplifier 11 amplifies an input signal and can

  10. Foundations of factor analysis

    CERN Document Server

    Mulaik, Stanley A

    2009-01-01

    Introduction Factor Analysis and Structural Theories Brief History of Factor Analysis as a Linear Model Example of Factor AnalysisMathematical Foundations for Factor Analysis Introduction Scalar AlgebraVectorsMatrix AlgebraDeterminants Treatment of Variables as Vectors Maxima and Minima of FunctionsComposite Variables and Linear Transformations Introduction Composite Variables Unweighted Composite VariablesDifferentially Weighted Composites Matrix EquationsMulti

  11. Blood coagulation factor VIII

    Indian Academy of Sciences (India)

    Factor VIII (FVIII) functions as a co-factor in the blood coagulation cascade for the proteolytic activation of factor X by factor IXa. Deficiency of FVIII causes hemophilia A, the most commonly inherited bleeding disorder. This review highlights current knowledge on selected aspects of FVIII in which both the scientist and the ...

  12. Constructivism, Factoring, and Beliefs.

    Science.gov (United States)

    Rauff, James V.

    1994-01-01

    Discusses errors made by remedial intermediate algebra students in factoring polynomials in light of student definitions of factoring. Found certain beliefs about factoring to logically imply many of the errors made. Suggests that belief-based teaching can be successful in teaching factoring. (16 references) (Author/MKR)

  13. Application des techniques de diffusion de la lumière des rayons X et des neutrons à l'étude des systèmes colloïdaux. Première partie : Présentation théorique des trois techniques Application of Light, X-Ray and Neutron Diffusion Techniques to the Study of Colloidal Systems. Part One : Theoretical Description of Three Techniques

    Directory of Open Access Journals (Sweden)

    Espinat D.

    2006-11-01

    Full Text Available Les techniques de diffusion, des rayons X, des neutrons et de la lumière, jouent un rôle très important pour la compréhension des milieux colloïdaux. Peu d'articles de la littérature s'attachent à présenter conjointement les trois méthodes. Nous avons, dans la première partie de cet article, détaillé les principes théoriques en insistent tout particulièrement sur les spécificités de chacune. Après les rappels concernant la diffusion par les systèmes dilués, nous nous sommes intéressés aux systèmes concentrés pour lesquels les entités diffusantes sont en interaction. Les milieux dispersés montrent souvent une certaine polydispersité que l'on cherche à mesurer; les techniques de diffusion permettent cette mesure. Nous terminerons cette revue par une description des appareillages utilisés. La deuxième partie de cet article concernera une large illustration des possibilités de ces méthodes d'analyse à l'étude des systèmes colloïdaux, sur la base de travaux effectués à I'IFP (Institut Français du Pétrole ou dans de nombreux laboratoires de recherche extérieurs. This article aims to describe X-ray, neutron and light scattering techniques with emphasis on their specific nature and their scope of application. Indeed, whereas light diffusion has been used for a long time in research laboratories, in particular for characterizing polymers in solution, small angle X-ray scattering has been the subject of renewed interest in recent years. Neutron scattering, which is obviously more difficultly accessible, has proven to be extremely useful for studying various systems for which light and X-ray scattering remain relatively powerless. Whereas there is an abundant literature concerning various applications of the three methods, it should be noted that only a few articles have attempted to describe all three techniques at the same time. In this article we have tried to make up for this lack, and as such it was

  14. Factors affecting construction performance: exploratory factor analysis

    Science.gov (United States)

    Soewin, E.; Chinda, T.

    2018-04-01

    The present work attempts to develop a multidimensional performance evaluation framework for a construction company by considering all relevant measures of performance. Based on the previous studies, this study hypothesizes nine key factors, with a total of 57 associated items. The hypothesized factors, with their associated items, are then used to develop questionnaire survey to gather data. The exploratory factor analysis (EFA) was applied to the collected data which gave rise 10 factors with 57 items affecting construction performance. The findings further reveal that the items constituting ten key performance factors (KPIs) namely; 1) Time, 2) Cost, 3) Quality, 4) Safety & Health, 5) Internal Stakeholder, 6) External Stakeholder, 7) Client Satisfaction, 8) Financial Performance, 9) Environment, and 10) Information, Technology & Innovation. The analysis helps to develop multi-dimensional performance evaluation framework for an effective measurement of the construction performance. The 10 key performance factors can be broadly categorized into economic aspect, social aspect, environmental aspect, and technology aspects. It is important to understand a multi-dimension performance evaluation framework by including all key factors affecting the construction performance of a company, so that the management level can effectively plan to implement an effective performance development plan to match with the mission and vision of the company.

  15. The joy of factoring

    CERN Document Server

    Wagstaff, Samuel S

    2013-01-01

    This book is about the theory and practice of integer factorization presented in a historic perspective. It describes about twenty algorithms for factoring and a dozen other number theory algorithms that support the factoring algorithms. Most algorithms are described both in words and in pseudocode to satisfy both number theorists and computer scientists. Each of the ten chapters begins with a concise summary of its contents. The book starts with a general explanation of why factoring integers is important. The next two chapters present number theory results that are relevant to factoring. Further on there is a chapter discussing, in particular, mechanical and electronic devices for factoring, as well as factoring using quantum physics and DNA molecules. Another chapter applies factoring to breaking certain cryptographic algorithms. Yet another chapter is devoted to practical vs. theoretical aspects of factoring. The book contains more than 100 examples illustrating various algorithms and theorems. It also co...

  16. Factor VII deficiency

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000548.htm Factor VII deficiency To use the sharing features on this page, please enable JavaScript. Factor VII (seven) deficiency is a disorder caused by a ...

  17. Annual Adjustment Factors

    Data.gov (United States)

    Department of Housing and Urban Development — The Department of Housing and Urban Development establishes the rent adjustment factors - called Annual Adjustment Factors (AAFs) - on the basis of Consumer Price...

  18. Stroke - risk factors

    Science.gov (United States)

    ... oxygen. Brain cells can die, causing lasting damage. Risk factors are things that increase your chance of ... a disease or condition. This article discusses the risk factors for stroke and things you can do ...

  19. Human factors in training

    International Nuclear Information System (INIS)

    Dutton, J.W.; Brown, W.R.

    1981-01-01

    The Human Factors concept is a focused effort directed at those activities which require human involvement. Training is, by its nature, an activity totally dependent on the Human Factor. This paper identifies several concerns significant to training situations and discusses how Human Factor awareness can increase the quality of learning. Psychology in the training arena is applied Human Factors. Training is a method of communication represented by sender, medium, and receiver. Two-thirds of this communications model involves the human element directly

  20. Neutron electromagnetic form factors

    International Nuclear Information System (INIS)

    Finn, J.M.; Madey, R.; Eden, T.; Markowitz, P.; Rutt, P.M.; Beard, K.; Anderson, B.D.; Baldwin, A.R.; Keane, D.; Manley, D.M.; Watson, J.W.; Zhang, W.M.; Kowalski, S.; Bertozzi, W.; Dodson, G.; Farkhondeh, M.; Dow, K.; Korsch, W.; Tieger, D.; Turchinetz, W.; Weinstein, L.; Gross, F.; Mougey, J.; Ulmer, P.; Whitney, R.; Reichelt, T.; Chang, C.C.; Kelly, J.J.; Payerle, T.; Cameron, J.; Ni, B.; Spraker, M.; Barkhuff, D.; Lourie, R.; Verst, S.V.; Hyde-Wright, C.; Jiang, W.-D.; Flanders, B.; Pella, P.; Arenhoevel, H.

    1992-01-01

    Nucleon form factors provide fundamental input for nuclear structure and quark models. Current knowledge of neutron form factors, particularly the electric form factor of the neutron, is insufficient to meet these needs. Developments of high-duty-factor accelerators and polarization-transfer techniques permit new experiments that promise results with small sensitivities to nuclear models. We review the current status of the field, our own work at the MIT/Bates linear accelerator, and future experimental efforts

  1. Disconnected electromagnetic form factors

    International Nuclear Information System (INIS)

    Wilcox, Walter

    2001-01-01

    Preliminary results of a calculation of disconnected nucleon electromagnetic factors factors on the lattice are presented. The implementation of the numerical subtraction scheme is outlined. A comparison of results for electric and magnetic disconnected form factors on two lattice sizes with those of the Kentucky group is presented. Unlike previous results, the results found in this calculation are consistent with zero in these sectors

  2. Mesonic Form Factors

    Energy Technology Data Exchange (ETDEWEB)

    Frederic D. R. Bonnet; Robert G. Edwards; George T. Fleming; Randal Lewis; David Richards

    2003-07-22

    We have started a program to compute the electromagnetic form factors of mesons. We discuss the techniques used to compute the pion form factor and present preliminary results computed with domain wall valence fermions on MILC asqtad lattices, as well as Wilson fermions on quenched lattices. These methods can easily be extended to rho-to-gamma-pi transition form factors.

  3. Factores externos determinantes de las decisiones de inversión a largo plazo en el sector farmacéutico

    Directory of Open Access Journals (Sweden)

    Josnel Martínez

    2016-01-01

    Full Text Available La presente investigación tiene por objetivo identificar los factores externos determinantes de las decisiones de inversión a largo plazo en el sector farmacéutico del estado Zulia. Desde el punto de vista teórico, los principales autores citados son David (2008, Hitt y otros (2004 y Hill y Jones (1996. Metodológicamente, es de tipología descriptiva con un diseño de campo-no experimental y transversal. La población estuvo compuesta por las siete (7 farmacias inscritas y activas en el Registro Municipal de la Alcaldía Bolivariana del municipio Jesús Enrique Lossada – estado Zulia, al mes de mayo de 2015. Se utilizó el cuestionario estructurado como instrumento de recolección de datos aplicado a los gerentes generales, quienes fueron las unidades informantes; el mismo fue validado por cinco (5 expertos y el nivel de confiabilidad aplicando el Alpha-Cronbach, que fue de 0,89. Los resultados evidencian que los factores externos determinantes de las decisiones de inversión a largo plazo en el sector farmacéutico del estado Zulia son: la inflación, la escasez, la fluctuación de precios, el patrón de consumo y la tendencia del desempleo (dentro de los factores económicos; los hábitos de compra (dentro de los factores sociales, culturales, demográficas y ambientales; la política monetaria y la política fiscal (dentro de los factores políticas gubernamentales y legales; los avances en la tecnología (dentro de los factores tecnológicos y las debilidades en la cartera de productos ofertados por la competencia (dentro de los factores competitivos.

  4. Factor estimulante de colonias de granulocitos en pacientes con cáncer Granulocyte-colony stimulating factor in patients with cancer

    Directory of Open Access Journals (Sweden)

    María Cristina Céspedes Quevedo

    2013-01-01

    Full Text Available Se efectuó un estudio descriptivo, longitudinal y prospectivo de 26 pacientes con cáncer en diferentes localizaciones asociado a leucopenia y neutropenia inducidas por citotóxicos, atendidos en el Servicio de Quimioterapia del Hospital Oncológico Docente "Conrado Benítez" de Santiago de Cuba, de mayo del 2011 a igual mes del 2012, con vistas a determinar el efecto del factor de colonias granulocítica recombinante Ior® LeukoCIM --producido por el Centro de Inmunología Molecular de Ciudad de La Habana-- en ellos mediante la realización de conteos globales de leucocitos y neutrófilos, antes y después de aplicar el tratamiento. En la serie predominaron el sexo femenino, el cáncer de mama y el estadio clínico II; también se obtuvo que 92,3 % de los pacientes respondieron satisfactoriamente a la terapia, el estadio clínico del cáncer no modificó el efecto mielodepresor de los citotóxicos ni el mieloestimulador de la hormona, y el cisplatino y la adriamicina se relacionaron con las neutropenias mayores y la falta de reacción al factor. Para finalizar, el Ior® LeukoCIM estimuló el sistema granulopoyético de la mayoría de los afectados.A descriptive, longitudinal and prospective study was conducted in 26 patients with cancer in different locations associated with leukopenia and neutropenia induced by cytotoxic drugs, treated at the Chemotherapy Department of "Conrado Benítez" Teaching Oncology Hospital of Santiago de Cuba, from May 2011 to the same month of 2012, with the purpose of determining the effect of the recombinant granulocyte-colony factor Ior® LeukoCIM --produced by the Center of Molecular Immunology in Havana city-- in them by means of global counts of leukocytes and neutrophils before and after applying the treatment. Female sex, breast cancer and clinical stage II prevailed in the series. It was also found that 92.3% of patients responded successfully to the therapy, the clinical stage of cancer did not modify the

  5. demographic factors associated factors associated with malaria

    African Journals Online (AJOL)

    userpc

    .8%) than those in other nce of 35.4% which was actors can predispose alence of malaria in a study were significantly eveloping guidelines and more effective disease endemic areas (Bashar et therefore attempts to rmation on possible demographic factors d out in four selected geria; Major Ibrahim B. Hospital Zaria, Hajiya.

  6. Diversidad y datos reproductivos de mamíferos medianos y grandes en el bosque mesófilo de montaña de la Reserva de la Biosfera Sierra de Manantlán, Jalisco-Colima, México Medium and large mammal diversity and reproductive data in the cloud forest, Biosphere Reserve of Sierra Manantlán, Jalisco-Colima, Mexico

    Directory of Open Access Journals (Sweden)

    Marcelo Aranda

    2012-09-01

    Full Text Available El bosque mesófilo de montaña (BMM es uno de los ecosistemas con menor extensión territorial y de los más amenazados en México. Este trabajo presenta datos sobre la riqueza, abundancia relativa, actividad y datos reproductivos de especies de mamíferos medianos y grandes en el BMM ubicado en la Reserva de la Biosfera Sierra de Manantlán. Entre febrero de 2008 y agosto de 2009, mediante la utilización de fototrampas, se obtuvieron 372 registros independientes que corresponden a 17 especies. Esta información respalda la elección adecuada de método y sitios de monitoreo. Los resultados indican que el ecosistema se encuentra en buen estado de conservación, lo que coincide con lo que en fecha reciente registró la Comisión Nacional para el Conocimiento y Uso de la Biodiversidad. Es recomendable establecer acciones de monitoreo a mediano y largo plazo en múltiples sitios, para complementar la evaluación que se ha realizado de este ecosistema en el país.The cloud forest (CF is one of the ecosystems with less surface and the most threatened in Mexico. This paper presents information on the richness, relative abundance, activity and reproductive data of medium and large mammals in the CF located in the Sierra de Manantlán Biosphere Reserve. Between February 2008 and August 2009, we used camera-traps with which we obtained 372 independent records, corresponding to 17 species. We believe this data supports an appropriate choice of method and monitoring sites; but also data on richness, abundance and reproduction of the species indicate that the ecosystem is properly preserved in the area, which is consistent with recently reported Conabio. Therefore we recommend establishing monitoring activities in the medium and long term in multiple sites, which could complement the assessment that has been undertaken at national level in this ecosystem.

  7. Eficiencia reproductiva de diferentes genotipos bovinos en la Amazonia Ecuatoriana

    OpenAIRE

    Ortiz Naveda, N. R.; Castro Guamán, W. E.; Marin, P. R.; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC

    2015-01-01

    Los problemas reproductivos en el centro de la Amazonia Ecuatoriana, están condicionados por un sin número de factores, que directa e indirectamente conspiran para mejorar los parámetros productivos de la zona. Las condiciones ambientales, el manejo, la falta de energía en la dieta, la salud, la infraestructura y los genotipos utilizados influyen para no lograr una eficiente reproducción Lopez et al., 2014). El anestro posparto es el principal factor que afecta negativamente el desempeño repr...

  8. Salud mental y aborto terapéutico

    OpenAIRE

    Rondón, Marta B.

    2015-01-01

    Se revisa el concepto de salud para argumentar que el componente mental es inherente al bienestar integral, estando la salud mental y la física íntimamente interrelacionadas. Se describe la relación entre depresión y eventos del ciclo reproductivo, especialmente en cuanto al riesgo que supone el embarazo no deseado, que es un factor de riesgo para depresión posparto reportado en investigaciones realizadas en diversos lugares del mundo. Siendo así, las mujeres que presentan factores de riesgo ...

  9. Fatores de risco e proteção à infecção respiratória aguda em lactentes Factores de riesgo y protección de la infección respiratoria aguda en lactantes Risk and protective factors of acute respiratory infections in infants

    Directory of Open Access Journals (Sweden)

    Claudia Regina Cachulo Lopes

    2009-12-01

    embarazo (n=42, y el tercero la recibía en el posparto inmediato (n=45. Las infecciones presumiblemente causadas por el pneumococo en los lactantes fueron acompañadas a los tres y seis meses de vida y colectadas muestras de nasofaringe. Fueron investigados factores de riesgo como: fumadores en el domicilio, otros niños en el domicilio y amamantamiento materno exclusivo. RESULTADOS: La vacuna pneumocóccica polisacarídica no mostró protección contra infecciones causadas por pneumococo. Sin embargo, el amamantamiento materno exclusivo hasta los seis meses protegió los lactantes contra las infecciones respiratorias (OR=7,331. La colonización de la nasofaringe por pneumococo a los tres o seis meses aumentó la probabilidad de infecciones respiratorias (OR=2,792. CONCLUSIONES: Lactantes amamantados exclusivamente con leche materna hasta los seis meses son significativamente protegidos contra infecciones por pneumococos, independientemente de la vacunación pneumocóccica.OBJECTIVE: To analyze the effectiveness of maternal pneumococcal polysaccharide vaccine and the risk and protective factors for acute respiratory infections in infants. METHODS: Nested cross-sectional study of a clinical trial evaluating children of 139 women selected in a public prenatal care unit in the municipality of São Paulo, Southeastern Brazil, from 2005 to 2006. Subjects were randomly assigned to three groups: non-immunized (n=46; immunized with pneumococcal polysaccharide vaccine in the last trimester of pregnancy (n=42; and immunized with the vaccine immediately after childbirth (n=45. Infants were followed up for infections presumably caused by pneumococcus at the age of three and six months and nasopharyngeal samples were collected. Risk factors such as smokers living in the same household, siblings and exclusive maternal breastfeeding were investigated. RESULTS: The pneumococcal polysaccharide vaccine did not provide protection against pneumococcus infections. However, exclusive maternal

  10. Aspects of QCD factorization

    International Nuclear Information System (INIS)

    Neubert, Matthias

    2001-01-01

    The QCD factorization approach provides the theoretical basis for a systematic analysis of nonleptonic decay amplitudes of B mesons in the heavy-quark limit. After recalling the basic ideas underlying this formalism, several tests of QCD factorization in the decays B→D (*) L, B→K * γ, and B→πK, ππ are discussed. It is then illustrated how factorization can be used to obtain new constraints on the parameters of the unitarity triangle

  11. Oversimplifying quantum factoring.

    Science.gov (United States)

    Smolin, John A; Smith, Graeme; Vargo, Alexander

    2013-07-11

    Shor's quantum factoring algorithm exponentially outperforms known classical methods. Previous experimental implementations have used simplifications dependent on knowing the factors in advance. However, as we show here, all composite numbers admit simplification of the algorithm to a circuit equivalent to flipping coins. The difficulty of a particular experiment therefore depends on the level of simplification chosen, not the size of the number factored. Valid implementations should not make use of the answer sought.

  12. Radioimmunoassay of human Hageman factor (factor XII)

    International Nuclear Information System (INIS)

    Saito, H.; Ratnoff, O.D.; Pensky, J.

    1976-01-01

    A specific, sensitive, and reproducible radioimmunoassay for human Hageman factor (HF, factor XII) has been developed with purified human HF and monospecific rabbit antibody. Precise measurements of HF antigen were possible for concentrations as low as 0.1 percent of that in normal pooled plasma. A good correlation (correlation coefficient = 0.82) existed between the titers of HF measured by clot-promoting assays and radioimmunoassays among 42 normal adults. Confirming earlier studies, HF antigen was absent in Hageman trait plasma, but other congenital deficient plasmas, including those of individuals with Fletcher trait and Fitzgerald trait, contained normal amounts of HF antigen. HF antigen was reduced in the plasmas of patients with disseminated intravascular coagulation or advanced liver cirrhosis, but it was normal in those of patients with chronic renal failure or patients under treatment with warfarin. HF antigen was detected by this assay in plasmas of primates, but not detectable in plasmas of 11 nonprimate mammalian and one avian species

  13. Gender disparities in the association between socio-demographics and non-communicable disease risk factors among adults with disabilities in Shanghai, China

    Directory of Open Access Journals (Sweden)

    Youran Zhang

    2018-03-01

    Full Text Available Background Non-communicable disease (NCD risk factors can co-exist with disability and cause a greater burden on the health status of adults with disabilities. A lack of egalitarian social policies in China may result in gender disparities in the NCD risk factors of adults with disabilities. However, little is known about the gender disparities in the association between socio-demographics and NCD risk factors among adults with disabilities in China; consequently, we examined this association among adults with disabilities in Shanghai, China. Methods We used the health examination data of 44,896 adults with disabilities in Shanghai in 2014. Descriptive analyses and logistic regression models were conducted to estimate gender disparities in the association between socio-demographics, disability characteristics, and four selected NCD risk factors among adults with disabilities—including high blood pressure, high blood glucose, high blood lipids, and being overweight. We estimated marginal effects (MEs on NCD risk factors between gender and other confounders. Results Women with disabilities were about 11.6 percentage points more likely to suffer from high blood lipids and less likely to develop the other three risk factors than men were. The association of age group, residence permit, education level, marital status, and disability type with health outcomes varied by gender among adults with disabilities. The difference in age effects between men and women was more pronounced in older age groups. Urban residence was associated with less risk of high blood pressure risk among women (ΔME =  − 0.035, p < 0.01, but no significant difference in other NCD risk factors. Education remained a major protective factor against high blood pressure, high blood glucose and being overweight among women with disabilities (MEs < 0, p < 0.05; however, this did not hold for men. The difference in marriage effects between men and women was observed in

  14. Recycling of solid wastes in Mexico City in livestock and agricultural production systems as a sustainable alternative Le recyclage des déchets solides issus du bétail et des systèmes de production agricole comme solution alternative durable à la gestion des déchets dans la ville de Mexico Reciclaje de desechos sólidos para la producción agropecuaria en la Ciudad de México como alternativa sustentable

    Directory of Open Access Journals (Sweden)

    H. Losada

    2011-04-01

    Full Text Available The use of solid organic wastes (manure and  fruit and vegetable refusals as a way to recycle rubbish from peri-urban areas for the production of crops for local consumption, has been designated by some researchers as an alternate method to partially reduce city waste disposal problems as well as to generate employment and promote the consumption of local products. This model production has also been suggested as a closed system ideally suited for urban environments in order to reduce the use of external inputs and encourage waste recycling policies for resource usage. A system that uses a significant amount of solid waste in the form of fruits and vegetables and the local food industry to feed dairy cows has been implemented in the East of Mexico City. The stable refusal consisting of manure and straw are sent in a fresh way to agricultural areas of the South-East of the city and used as an important external input support for the production of nopal-verdura which constitutes an important food in the diet of the inhabitants of Mexico City. The main goal of this paper is to expose and analyze current and future advantages and problems in both systems as sustainable alternatives for waste management.L’utilisation de déchets organiques solides (fumier et déchets de fruits et légumes comme moyen de recyclage des ordures des zones périurbaines pour produire des récoltes destinées à la consommation locale, a été décrite par certains chercheurs comme une solution permettant de réduire partiellement les problèmes de gestion des déchets dans les villes, de générer de l’emploi et d’encourager la consommation de produits locaux. Ce modèle de production est également considéré comme un système fermé parfaitement adapté aux environnements urbains car il permet de réduire le recours à des ressources externes et d’encourager les politiques de recyclage des déchets pour l’utilisation des ressources. Un système qui utilise

  15. What Are Rare Clotting Factor Deficiencies?

    Science.gov (United States)

    ... Deficiency Factor V Deficiency Combined FV & FVIII Deficiencies Factor VII Deficiency Factor X Deficiency Factor XI Deficiency Factor ... Deficiency Factor V Deficiency Combined FV & FVIII Deficiencies Factor VII Deficiency Factor X Deficiency Factor XI Deficiency Factor ...

  16. PAYMENT CAPACITY SENSITIVITY FACTORS

    Directory of Open Access Journals (Sweden)

    Daniel BRÎNDESCU – OLARIU

    2014-11-01

    The results of the study facilitate the determination and classification of the main sensitivity factors for the payment capacity at sample level, the establishment of general benchmarks for the payment capacity (as no such benchmarks currently exist in the Romanian literature and the identification of the mechanisms through which the variation of different factors impacts the payment capacity.

  17. Respirator field performance factors

    International Nuclear Information System (INIS)

    Skaggs, B.J.; DeField, J.D.; Strandberg, S.W.; Sutcliffe, C.R.

    1985-01-01

    The Industrial Hygiene Group assisted OSHA and the NRC in measurements of respirator performance under field conditions. They reviewed problems associated with sampling aerosols within the respirator in order to determine fit factors (FFs) or field performance factor (FPF). In addition, they designed an environmental chamber study to determine the effects of temperature and humidity on a respirator wearer

  18. Factors affecting nuclear development

    International Nuclear Information System (INIS)

    Stevens, G.H.; Girouard, P.

    1995-01-01

    Among the factors affecting nuclear development, some depend more or less on public authorities, but many are out of public authorities control (foreign policies, market and deregulation, socials and environmental impacts, public opinion). As far as possible, the following study tries to identify those factors. (D.L.). 2 photos

  19. Soil Forming Factors

    Science.gov (United States)

    It! What is Soil? Chip Off the Old Block Soil Forming Factors Matters of Life and Death Underneath It All Wise Choices A World of Soils Soil Forming Factors 2 A Top to Bottom Guide 3 Making a Soil Monolith 4 Soil Orders 5 State Soil Monoliths 6 Where in the Soil World Are You? >> A Top to

  20. Description of Three New α Variants and Four New β Variants: Hb Montluel [α110(G17)Ala → Val; HBA1: c.332C > T], Hb Cap d'Agde [α131(H14)Ser → Cys; HBA2: c.395C > G] and Hb Corsica [α100(G7)Leu → Pro; HBA1: 302T > C]; Hb Nîmes [β104(G6)Arg → Gly; HBB: c.313A > G], Hb Saint Marcellin [β112(G14)Cys → Gly; HBB: c.337T > G], Hb Saint Chamond [β80(EF4)Asn → 0; HBB: c.241_243delAAC] and Hb Dompierre [β29(B11)Gly → Arg; HBB: c.88G > C].

    Science.gov (United States)

    Renoux, Céline; Feray, Cécile; Joly, Philippe; Lacan, Philippe; Francina, Alain

    2015-01-01

    We present here seven new hemoglobin (Hb) variants identified during routine Hb analysis. All of them are caused by a missense mutation except Hb Saint Chamond, which results from an in-frame deletion of the asparagine residue at β80. All these variants are clinically silent in the heterozygous state but two of them (Hb Cap d'Agde and Hb Dompierre) may be unstable, whereas Hb Nîmes could present a very slightly elevated oxygen affinity. These data are to be confirmed by appropriate biochemical tests.

  1. Microbiological quality of raw milk and factors that influence its quality Qualidade microbiológica de leite cru refrigerado e fatores associados

    Directory of Open Access Journals (Sweden)

    Liliane Borsatti

    2009-03-01

    Full Text Available In order to investigate the microbiological conditions of raw milk and some factors that influence its quality, 31 dairy farms of municipality of Marechal Cândido Rondon were evaluated. Analyses of aerobic mesophilic microorganisms, coliforms at 35ºC, thermotolerant coliforms and fungi and yeasts were accomplished. The following issues were evaluated: type of milking management, cleaning of utensils, separation of animals in batches during milking, teat washing and use of pre and post dipping disinfectant solution. The results showed that 25.8% (for aerobic mesophilic and 19.35% (for coliforms at 35°C of the analyzed samples had their counting above the actual legislation standard and 58.06% of the samples were contaminated with thermotolerant coliforms. It was verified that 64.51% of samples had fungi and yeasts counting above 100 UFC/mL. There were failures at hygiene and cleaning procedures in all dairy farms. Severe regulatory policies must be adopted for this kind of product aiming a food safety warranty to the customer.Para avaliação das condições microbiológicas do leite cru e estudo de alguns dos fatores que influenciam sua qualidade, foram analisadas 31 propriedades leiteiras do município de Marechal Cândido Rondon. Realizaram-se análises de microrganismos aeróbios mesófilos, coliformes a 35ºC, coliformes termotolerantes e de bolores e leveduras. Foram analisados tipo de ordenha, lavagem dos utensílios, separação dos animais no momento da ordenha por lotes, lavagem dos tetos e uso de soluções desinfetantes para pré e pós-dipping. Entre as amostras analisadas, 25,8% (para aeróbios mesófilos e 19,35% (para coliformes a 35ºC apresentaram contagens acima do padrão vigente pela legislação e 58,06% possuíam coliformes termotolerantes. Verificou-se que 64,51% das amostras apresentaram contagem de bolores e leveduras acima de 100 UFC/mL. Em todas as propriedades havia falhas nos procedimentos de higiene e limpeza

  2. Relación entre morfología foliar de antófitos y factores abióticos en las principales pluvisilvas de la Región Oriental cubana

    Directory of Open Access Journals (Sweden)

    Eddy Martínez Quesada

    2009-06-01

    Full Text Available Se estudió la morfología foliar de los antófitos que son representativos de cuatro tipos de pluvisilvas de la Región Oriental de Cuba y se relacionó con los principales factores abióticos. Se encontró que existen varios tipos de hojas, pero predominó la micrófila en las especies endémicas y la mesófila, en las no endémicas. En la epidermis foliar se hallaron estructuras que son características de plantas mesomórficas y algunas xeromórficas, pero también se observaron otras que permiten una adaptación a las condiciones de alta humedad atmosférica, las que se consideraron higromórficas.Relationship between antophyte foliar morphology and abiotic factors in the main rainforests of Eastern Cuba. The foliar morphology of representative antophytes in four rainforest types of Eastern Cuba was studied in relation to the main abiotic factors. Although there are several leaf types in these forests, the microphyll type is the most important among endemic species in the ophiolites complex and the Montane rainforest. At the Lowland rainforest (metamorphic complex the mesophyll leaf was the most important. Most foliar epidermis had structures normally found in mesomorphic plants, but xeromorphic and higromorphic morphologies were also present. Rev. Biol. Trop. 57 (1-2: 235-256. Epub 2009 June 30.

  3. Two-factor authentication

    CERN Document Server

    Stanislav, Mark

    2015-01-01

    During the book, readers will learn about the various technical methods by which two-factor authentication is implemented, security concerns with each type of implementation, and contextual details to frame why and when these technologies should be used. Readers will also be provided with insight about the reasons that two-factor authentication is a critical security control, events in history that have been important to prove why organization and individual would want to use two factor, and core milestones in the progress of growing the market.

  4. Business Intelligence Success Factors

    DEFF Research Database (Denmark)

    Gaardboe, Rikke; Jonasen, Tanja Svarre

    2018-01-01

    Business intelligence (BI) is a strategically important practice in many organizations. Several studies have investigated the factors that contribute to BI success; however, an overview of the critical success factors (CSFs) involved is lacking in the extant literature. We have integrated...... 34 CSFs related to BI success. The distinct CSFs identified in the extant literature relate to project management skills (13 papers), management support (20 papers), and user involvement (11 papers). In the articles with operationalized BI success, we found several distinct factors: system quality...

  5. Human factor reliability program

    International Nuclear Information System (INIS)

    Knoblochova, L.

    2017-01-01

    The human factor's reliability program was at Slovenske elektrarne, a.s. (SE) nuclear power plants. introduced as one of the components Initiatives of Excellent Performance in 2011. The initiative's goal was to increase the reliability of both people and facilities, in response to 3 major areas of improvement - Need for improvement of the results, Troubleshooting support, Supporting the achievement of the company's goals. The human agent's reliability program is in practice included: - Tools to prevent human error; - Managerial observation and coaching; - Human factor analysis; -Quick information about the event with a human agent; -Human reliability timeline and performance indicators; - Basic, periodic and extraordinary training in human factor reliability(authors)

  6. [Human factors in medicine].

    Science.gov (United States)

    Lazarovici, M; Trentzsch, H; Prückner, S

    2017-01-01

    The concept of human factors is commonly used in the context of patient safety and medical errors, all too often ambiguously. In actual fact, the term comprises a wide range of meanings from human-machine interfaces through human performance and limitations up to the point of working process design; however, human factors prevail as a substantial cause of error in complex systems. This article presents the full range of the term human factors from the (emergency) medical perspective. Based on the so-called Swiss cheese model by Reason, we explain the different types of error, what promotes their emergence and on which level of the model error prevention can be initiated.

  7. Shell Buckling Knockdown Factors

    Data.gov (United States)

    National Aeronautics and Space Administration — The Shell Buckling Knockdown Factor (SBKF) Project, NASA Engineering and Safety Center (NESC) Assessment #: 07-010-E, was established in March of 2007 by the NESC in...

  8. Risk factors for neoplasms

    International Nuclear Information System (INIS)

    Brachner, A.; Grosche, B.

    1991-06-01

    A broad survey is given of risk factors for neoplasms. The main carcinogenic substances (including also ionizing radiation and air pollution) are listed, and are correlated with the risk factors for various cancers most frequently explained and discussed in the literature. The study is intended to serve as a basis for a general assessment of the incidence of neoplasms in children, and of cancer mortality in the entire population of Bavaria in the years 1983-1989, or 1979-1988, respectively, with the principal idea of drawing up an environment-related health survey. The study therefore takes into account not only ionizing radiation as a main risk factor, but also other risk factors detectable within the ecologic context, as e.g. industrial installations and their effects, refuse incineration plants or waste dumps, or the social status. (orig./MG) [de

  9. Factor IX assay

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003679.htm Factor IX assay To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  10. Factor VIII assay

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003678.htm Factor VIII assay To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  11. Factor II assay

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003674.htm Factor II assay To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  12. Factor V deficiency

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000550.htm Factor V deficiency To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  13. Rheumatoid factor (RF)

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/003548.htm Rheumatoid factor (RF) To use the sharing features on this ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  14. Factor II deficiency

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000549.htm Factor II deficiency To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  15. Factor VII assay

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/003676.htm Factor VII assay To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  16. Factor X deficiency

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000553.htm Factor X deficiency To use the sharing features on ... M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health ...

  17. New microbial growth factor

    Science.gov (United States)

    Bok, S. H.; Casida, L. E., Jr.

    1977-01-01

    A screening procedure was used to isolate from soil a Penicillium sp., two bacterial isolates, and a Streptomyces sp. that produced a previously unknown microbial growth factor. This factor was an absolute growth requirement for three soil bacteria. The Penicillium sp. and one of the bacteria requiring the factor, an Arthrobacter sp., were selected for more extensive study concerning the production and characteristics of the growth factor. It did not seem to be related to the siderochromes. It was not present in soil extract, rumen fluid, or any other medium component tested. It appears to be a glycoprotein of high molecular weight and has high specific activity. When added to the diets for a meadow-vole mammalian test system, it caused an increased consumption of diet without a concurrent increase in rate of weight gain.

  18. Human factors in aviation

    National Research Council Canada - National Science Library

    Salas, Eduardo; Maurino, Daniel E

    2010-01-01

    .... HFA offers a comprehensive overview of the topic, taking readers from the general to the specific, first covering broad issues, then the more specific topics of pilot performance, human factors...

  19. [Risk factors of schizophrenia].

    Science.gov (United States)

    Suvisaari, Jaana

    2010-01-01

    Schizophrenia is a multifactorial, neurodevelopmental disorder caused by a combination of genetic and environmental risk factors. Disturbances of brain development begin prenatally, while different environmental insults further affect postnatal brain maturation during childhood and adolescence. Genome-wide association studies (GWAS) have succeeded in identifying hundreds of new risk variants for common, multifactorial diseases. In schizophrenia research, GWAS have found several rare copy number variants that considerably increase the risk of schizophrenia, and have shown an association between schizophrenia and the major histocompatibility complex. Research on environmental risk factors in recent years has provided new information particularly on risk factors related to pregnancy and childhood rearing environment. Gene-environment interactions have become a central research topic. There is evidence that genetically susceptible children are more vulnerable to the effects of unstable childhood rearing environment and other environmental risk factors.

  20. Human Factors Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — Purpose: The purpose of the Human Factors Laboratory is to further the understanding of highway user needs so that those needs can be incorporated in roadway design,...

  1. Factors Affecting Wound Healing

    Science.gov (United States)

    Guo, S.; DiPietro, L.A.

    2010-01-01

    Wound healing, as a normal biological process in the human body, is achieved through four precisely and highly programmed phases: hemostasis, inflammation, proliferation, and remodeling. For a wound to heal successfully, all four phases must occur in the proper sequence and time frame. Many factors can interfere with one or more phases of this process, thus causing improper or impaired wound healing. This article reviews the recent literature on the most significant factors that affect cutaneous wound healing and the potential cellular and/or molecular mechanisms involved. The factors discussed include oxygenation, infection, age and sex hormones, stress, diabetes, obesity, medications, alcoholism, smoking, and nutrition. A better understanding of the influence of these factors on repair may lead to therapeutics that improve wound healing and resolve impaired wounds. PMID:20139336

  2. The stem factor challenge

    International Nuclear Information System (INIS)

    Russell, M.J.; Steele, R. Jr.; DeWall, K.G.; Watkins, J.C.; Bramwell, D.

    1994-01-01

    One of the most important challenges that still needs to be met in the effort to understand the operation of motor-operated, rising-stem valves is the ability to determine stem factor throughout the valve's load range. The stem factor represents the conversion of operator torque to stem thrust. Determining the stem factor is important because some motor-operated valves (MOVs) cannot be tested in the plant at design basis conditions. The ability of these valves to perform their design basis function (typically, to operate against specified flow and pressure loads) must be ensured by analytical methods or by extrapolating from the results of tests conducted at lower loads. Because the stem factor tends to vary in response to friction and lubrication phenomena that occur during loading and wedging, analytical methods and extrapolation methods have been difficult to develop and implement. Early investigations into variability in the stem factor tended to look only at the tip of the iceberg; they focused on what was happening at torque switch trip, which usually occurs at full wedging. In most stems, the stem factor is better (lower) in the wedging transient than before wedging, so working with torque switch trip data alone led many early researchers to false conclusions about the relationship between stem factor and load. However, research at the Idaho National Engineering Laboratory (INEL) has taken a closer look at what happens during the running portion of the closing stroke along with the wedging portion. This shift in focus is important, because functional failure of a valve typically consists of a failure to isolate flow, not a failure to achieve full wedging. Thus, the stem factor that must be determined for a valve's design basis closing requirements is the one that corresponds with the running load before wedging

  3. Factors Affecting Wound Healing

    OpenAIRE

    Guo, S.; DiPietro, L.A.

    2010-01-01

    Wound healing, as a normal biological process in the human body, is achieved through four precisely and highly programmed phases: hemostasis, inflammation, proliferation, and remodeling. For a wound to heal successfully, all four phases must occur in the proper sequence and time frame. Many factors can interfere with one or more phases of this process, thus causing improper or impaired wound healing. This article reviews the recent literature on the most significant factors that affect cutane...

  4. Los factores de riesgo

    Directory of Open Access Journals (Sweden)

    Justo Senado Dumoy

    1999-01-01

    Full Text Available Sobre el fundamento filosófico de los conceptos de la Dialéctica Materialista, se presenta un análisis en relación con el concepto e interpretación de los Factores de Riesgo.A analysis on the concept and interpretation of risk factors is presented based on the philosophical foundation of the concepts of materialist dialectics.

  5. Brain derived neurotrophic factor

    DEFF Research Database (Denmark)

    Mitchelmore, Cathy; Gede, Lene

    2014-01-01

    Brain Derived Neurotrophic Factor (BDNF) is a neurotrophin with important functions in neuronal development and neuroplasticity. Accumulating evidence suggests that alterations in BDNF expression levels underlie a variety of psychiatric and neurological disorders. Indeed, BDNF therapies are curre......Brain Derived Neurotrophic Factor (BDNF) is a neurotrophin with important functions in neuronal development and neuroplasticity. Accumulating evidence suggests that alterations in BDNF expression levels underlie a variety of psychiatric and neurological disorders. Indeed, BDNF therapies...

  6. Factors Impacting Knowledge Sharing

    DEFF Research Database (Denmark)

    Schulzmann, David; Slepniov, Dmitrij

    The purpose of this paper is to examine various factors affecting knowledge sharing at the R&D center of a Western MNE in China. The paper employs qualitative methodology and is based on the action research and case study research techniques. The findings of the paper advance our understanding...... about factors that affect knowledge sharing. The main emphasis is given to the discussion on how to improve knowledge sharing in global R&D organizations....

  7. FGF growth factor analogs

    Science.gov (United States)

    Zamora, Paul O [Gaithersburg, MD; Pena, Louis A [Poquott, NY; Lin, Xinhua [Plainview, NY; Takahashi, Kazuyuki [Germantown, MD

    2012-07-24

    The present invention provides a fibroblast growth factor heparin-binding analog of the formula: ##STR00001## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y and Z are as defined, pharmaceutical compositions, coating compositions and medical devices including the fibroblast growth factor heparin-binding analog of the foregoing formula, and methods and uses thereof.

  8. Factorization and pion form factor in QCD

    International Nuclear Information System (INIS)

    Efremov, A.V.; Radyushkin, A.V.

    1979-01-01

    The behaviour of the pion electromagnetic form factor (EMFF) in the framework of quantum chromodynamics (QCD) is discussed. Pion is considered to be a quark-antiquark bound state. It is proposed to use an OPE description of the bound state structure by matrix elements of certain local gauge-invariant operators. Short-distance quark interactions is proved using a direct analysis of perturbation theory in the α-parametric representation of the Feynman diagrams. It is shown that the short-distance parton picture privides a self-consistent description of the large Q 2 momentum behaviour of the pion EMFF in QCD. Pion EMFF asymptotics is expressed in terms of fu fundamental constants of the theory

  9. [Pathological gambling: risk factors].

    Science.gov (United States)

    Bouju, G; Grall-Bronnec, M; Landreat-Guillou, M; Venisse, J-L

    2011-09-01

    In France, consumption of gambling games increased by 148% between 1960 and 2005. In 2004, gamblers lost approximately 0.9% of household income, compared to 0.4% in 1960. This represents approximately 134 Euros per year and per head. In spite of this important increase, the level remains lower than the European average (1%). However, gambling practices may continue to escalate in France in the next few years, particularly with the recent announce of the legalisation of online games and sports betting. With the spread of legalised gambling, pathological gambling rates may increase in France in the next years, in response to more widely available and more attractive gambling opportunities. In this context, there is a need for better understanding of the risk factors that are implicated in the development and maintenance of pathological gambling. This paper briefly describes the major risk factors for pathological gambling by examining the recent published literature available during the first quarter of 2008. This documentary basis was collected by Inserm for the collective expert report procedure on Gambling (contexts and addictions). Seventy-two articles focusing on risk factors for pathological gambling were considered in this review. Only 47 of them were taken into account for analysis. The selection of these 47 publications was based on the guide on literature analysis established by the French National Agency for Accreditation and Assessment in Health (ANAES, 2000). Some publications from more recent literature have also been added, mostly about Internet gambling. We identify three major types of risk factors implicated in gambling problems: some of them are related to the subject (individual factors), others are related to the object of the addiction, here the gambling activity by itself (structural factors), and the last are related to environment (contextual or situational factors). Thus, the development and maintenance of pathological gambling seems to be

  10. Complicaciones postquirúrgicas en la población infantil de 1 a 17 años intervenidos por trauma abdominal y torácico en el servicio de cirugía pediátrica del hospital “Carlos Andrade Marín” desde el mes de junio de 2013 hasta septiembre de 2016

    OpenAIRE

    López Vaca, César Augusto

    2017-01-01

    El trauma pediátrico provoca altos índices de mortalidad y morbilidad, que generan gran coste económico y humano, por lo que requiere de métodos que permitan hacer una estimación del riesgo de aparición de complicaciones y de esta manera identificarlas y tratarlas tempranamente. Objetivo: Identificar los factores asociados a complicaciones postquirúrgicas en la población infantil de 1 a 17 años intervenidos por trauma abdominal y torácico en el servicio de Cirugía Pediátrica del Hospital “Ca...

  11. Financiamiento de PyMEs en el mercado de Capitales - Viabilidad de la obtención de fondos para Empresas PyMEs del sector del retail

    OpenAIRE

    Berardo, Carlos Fernando

    2014-01-01

    En el presente trabajo se analizará la viabilidad que existe para que una empresa PyME acceda a financiarse en el Mercado de Capitales con el fin de reemplazar su actual estructura de financiamiento.- El mismo cuenta con un Marco Teórico donde se expondrán los principales modelos utilizados, entre los cuales puedo enumerar: La Teoría Clásica de las Series de Tiempo, utilizada para estimar la tendencia futura de las ventas; el Modelo de Regresión Lineal Simple, aplicado para conocer ...

  12. Generalised Batho correction factor

    International Nuclear Information System (INIS)

    Siddon, R.L.

    1984-01-01

    There are various approximate algorithms available to calculate the radiation dose in the presence of a heterogeneous medium. The Webb and Fox product over layers formulation of the generalised Batho correction factor requires determination of the number of layers and the layer densities for each ray path. It has been shown that the Webb and Fox expression is inefficient for the heterogeneous medium which is expressed as regions of inhomogeneity rather than layers. The inefficiency of the layer formulation is identified as the repeated problem of determining for each ray path which inhomogeneity region corresponds to a particular layer. It has been shown that the formulation of the Batho correction factor as a product over inhomogeneity regions avoids that topological problem entirely. The formulation in terms of a product over regions simplifies the computer code and reduces the time required to calculate the Batho correction factor for the general heterogeneous medium. (U.K.)

  13. factores psicosociales asociados

    Directory of Open Access Journals (Sweden)

    María Teresa Varela Arévalo

    2007-01-01

    Full Text Available El objetivo de este trabajo fue describir el consumo de sustancias psicoactivas [SPA] ilegales en jóvenes y los factores psicosociales de riesgo y de protección asociados. Participaron 763 estudiantes (46,5% hombres y 52,4% mujeres de una universidad privada de Cali, quienes diligenciaron el cuestionario de factores de riesgo y protección para el consumo de drogas. Los resultados muestran que la marihuana fue la droga de mayor consumo; y que existe una fuerte asociación entre el consumo de las cuatro SPA ilegales (marihuana, opiáceos, cocaína y éxtasis y los factores psicosociales de riesgo y/o protección, principalmente, las habilidades de autocontrol, los preconceptos y valoración de las SPA, la relación con personas consumidoras y los comportamientos perturbadores.

  14. Multi-factor authentication

    Science.gov (United States)

    Hamlet, Jason R; Pierson, Lyndon G

    2014-10-21

    Detection and deterrence of spoofing of user authentication may be achieved by including a cryptographic fingerprint unit within a hardware device for authenticating a user of the hardware device. The cryptographic fingerprint unit includes an internal physically unclonable function ("PUF") circuit disposed in or on the hardware device, which generates a PUF value. Combining logic is coupled to receive the PUF value, combines the PUF value with one or more other authentication factors to generate a multi-factor authentication value. A key generator is coupled to generate a private key and a public key based on the multi-factor authentication value while a decryptor is coupled to receive an authentication challenge posed to the hardware device and encrypted with the public key and coupled to output a response to the authentication challenge decrypted with the private key.

  15. Human factors guides

    International Nuclear Information System (INIS)

    Penington, J.

    1995-10-01

    This document presents human factors guides, which have been developed in order to provide licensees of the AECB with advice as to how to address human factors issues within the design and assessment process. This documents presents the results of a three part study undertaken to develop three guides which are enclosed in this document as Parts B, C and D. As part of the study human factors standards, guidelines, handbooks and other texts were researched, to define those which would be most useful to the users of the guides and for the production of the guides themselves. Detailed specifications were then produced to outline the proposed contents and format of the three guides. (author). 100 refs., 3 tabs., 11 figs

  16. Human factors guides

    Energy Technology Data Exchange (ETDEWEB)

    Penington, J [PHF Services Inc., (Canada)

    1995-10-01

    This document presents human factors guides, which have been developed in order to provide licensees of the AECB with advice as to how to address human factors issues within the design and assessment process. This documents presents the results of a three part study undertaken to develop three guides which are enclosed in this document as Parts B, C and D. As part of the study human factors standards, guidelines, handbooks and other texts were researched, to define those which would be most useful to the users of the guides and for the production of the guides themselves. Detailed specifications were then produced to outline the proposed contents and format of the three guides. (author). 100 refs., 3 tabs., 11 figs.

  17. The focus factor

    DEFF Research Database (Denmark)

    Nicolaisen, Jeppe; Frandsen, Tove Faber

    2015-01-01

    Introduction. We present a new bibliometric indicator to measure journal specialisation over time, named the focus factor. This new indicator is based on bibliographic coupling and counts the percentage of re-citations given in subsequent years. Method. The applicability of the new indicator....... To validate re-citations as caused by specialisation, other possible causes were measured and correlated (obsolescence, journal self-citations and number of references). Results. The results indicate that the focus factor is capable of distinguishing between general and specialised journals and thus...... effectively measures the intended phenomenon (i.e., journal specialisation). Only weak correlations were found between journal re-citations and obsolescence, journal self-citations, and number of references. Conclusions. The focus factor successfully measures journal specialisation over time. Measures based...

  18. Services, systems, and policies affecting mobility device users' community mobility: A scoping review: Services, systèmes et politiques influençant la mobilité dans la communauté des utilisateurs d'aides à la mobilité : examen de la portée.

    Science.gov (United States)

    Jónasdóttir, Sigrún Kristín; Polgar, Jan Miller

    2018-04-01

    Opportunities to travel from one place to another in the community, or community mobility, are especially important for mobility device users' ability to participate fully in society. However, contextual challenges to such mobility exist. This study summarizes the literature on existing community mobility barriers and facilitators of mobility device users created by services, systems, and policies as defined by the International Classification of Functioning, Disability, and Health (ICF). Arksey and O'Malley's approach for scoping studies was used for the review. The extraction chart was organized following the ICF, and frequency counts were used to report the data. The findings suggest that certain factors, such as transportation, open-space planning, and architecture and construction, influence community mobility opportunities. However, little attention has been paid to services, systems, and policies in the research literature, limiting the knowledge on the subject. Further research is needed to examine the relationship between specific services, systems, and policies and mobility device users' mobility within their communities.

  19. WRKY transcription factors

    Science.gov (United States)

    Bakshi, Madhunita; Oelmüller, Ralf

    2014-01-01

    WRKY transcription factors are one of the largest families of transcriptional regulators found exclusively in plants. They have diverse biological functions in plant disease resistance, abiotic stress responses, nutrient deprivation, senescence, seed and trichome development, embryogenesis, as well as additional developmental and hormone-controlled processes. WRKYs can act as transcriptional activators or repressors, in various homo- and heterodimer combinations. Here we review recent progress on the function of WRKY transcription factors in Arabidopsis and other plant species such as rice, potato, and parsley, with a special focus on abiotic, developmental, and hormone-regulated processes. PMID:24492469

  20. On braid monodromy factorizations

    International Nuclear Information System (INIS)

    Kharlamov, V M; Kulikov, Vik S

    2003-01-01

    We introduce and develop a language of semigroups over the braid groups to study the braid monodromy factorizations (bmf's) of plane algebraic curves and other related objects. As an application, we give a new proof of Orevkov's theorem on the realization of bmf's over a disc by algebraic curves and show that the complexity of such a realization cannot be bounded in terms of the types of factors of the bmf. We also prove that the type of a bmf distinguishes Hurwitz curves with singularities of inseparable type up to H-isotopy and J-holomorphic cuspidal curves in CP 2 up to symplectic isotopy

  1. Dose conversion factors

    International Nuclear Information System (INIS)

    Kocher, D.C.; Eckerman, K.F.

    1992-01-01

    The following is discussed in this report: concepts and quantities used in calculating radiation dose from internal and external exposure. Tabulations of dose conversion factor for internal and external exposure to radionuclides. Dose conversion factors give dose per unit intake (internal) or dose per unit concentration in environment (external). Intakes of radionuclides for internal exposure and concentrations of radionuclides in environment for external exposure are assumed to be known. Intakes and concentrations are obtained, e.g., from analyses of environmental transport and exposure pathways. differences between dosimetry methods for radionuclides and hazardous chemicals are highlighted

  2. Factors stimulating content marketing

    Directory of Open Access Journals (Sweden)

    Naser Azad

    2016-02-01

    Full Text Available This paper presents an empirical investigation to determine factors influencing on content marketing in banking industry. The study designs a questionnaire consists of 40 questions in Likert scale and distributes it among 550 randomly selected regular customers of Bank Mellat in city of Tehran, Iran and 400 properly filled questionnaires are collected. Cronbach alphas for all components of the survey are well above desirable level. Using principle component analysis with Varimax rotation, the study has determined six factors influencing the most on content marketing including organization, details, having new ideas, quality, sensitivity and power while the last component contains only two subcomponents and is removed from the study.

  3. STEREOTYPICAL FACTORS IN TOURISM

    Directory of Open Access Journals (Sweden)

    Cristina-Elena ALBU

    2013-06-01

    Full Text Available International tourism has grown rapidly nowdays, contributing to the growth of the global economy. The purpose of this essay is to identify and analyze stereotypical factors in the development of strategies concerning the offer for the tourism industry: the image of a tourist destination, brand, country of origin and customer behaviour. Documentary study was the research method used: representative articles were analysed, as recent as possible, to determine the factors mentioned above. Professionals in the industry of tourism need to understand cultural differences between tourists, as well as those of the host country, to be able to create tourist reception offers that live up to the standards expected by clients.

  4. Factor analysis and scintigraphy

    International Nuclear Information System (INIS)

    Di Paola, R.; Penel, C.; Bazin, J.P.; Berche, C.

    1976-01-01

    The goal of factor analysis is usually to achieve reduction of a large set of data, extracting essential features without previous hypothesis. Due to the development of computerized systems, the use of largest sampling, the possibility of sequential data acquisition and the increase of dynamic studies, the problem of data compression can be encountered now in routine. Thus, results obtained for compression of scintigraphic images were first presented. Then possibilities given by factor analysis for scan processing were discussed. At last, use of this analysis for multidimensional studies and specially dynamic studies were considered for compression and processing [fr

  5. The Transcription Factor Encyclopedia

    DEFF Research Database (Denmark)

    Yusuf, Dimas; Butland, Stefanie L; Swanson, Magdalena I

    2012-01-01

    mini review articles on pertinent human, mouse and rat TFs. Notable features of the TFe website include a high-quality PDF generator and web API for programmatic data retrieval. TFe aims to rapidly educate scientists about the TFs they encounter through the delivery of succinct summaries written......ABSTRACT: Here we present the Transcription Factor Encyclopedia (TFe), a new web-based compendium of mini review articles on transcription factors (TFs) that is founded on the principles of open access and collaboration. Our consortium of over 100 researchers has collectively contributed over 130...

  6. Factorizations and physical representations

    International Nuclear Information System (INIS)

    Revzen, M; Khanna, F C; Mann, A; Zak, J

    2006-01-01

    A Hilbert space in M dimensions is shown explicitly to accommodate representations that reflect the decomposition of M into prime numbers. Representations that exhibit the factorization of M into two relatively prime numbers: the kq representation (Zak J 1970 Phys. Today 23 51), and related representations termed q 1 q 2 representations (together with their conjugates) are analysed, as well as a representation that exhibits the complete factorization of M. In this latter representation each quantum number varies in a subspace that is associated with one of the prime numbers that make up M

  7. Model Correction Factor Method

    DEFF Research Database (Denmark)

    Christensen, Claus; Randrup-Thomsen, Søren; Morsing Johannesen, Johannes

    1997-01-01

    The model correction factor method is proposed as an alternative to traditional polynomial based response surface techniques in structural reliability considering a computationally time consuming limit state procedure as a 'black box'. The class of polynomial functions is replaced by a limit...... of the model correction factor method, is that in simpler form not using gradient information on the original limit state function or only using this information once, a drastic reduction of the number of limit state evaluation is obtained together with good approximations on the reliability. Methods...

  8. [Natural factors influencing sleep].

    Science.gov (United States)

    Jurkowski, Marek K; Bobek-Billewicz, Barbara

    2007-01-01

    Sleep is a universal phenomenon of human and animal lives, although the importance of sleep for homeo-stasis is still unknown. Sleep disturbances influence many behavioral and physiologic processes, leading to health complications including death. On the other hand, sleep improvement can beneficially influence the course of healing of many disorders and can be a prognostic of health recovery. The factors influencing sleep have different biological and chemical origins. They are classical hormones, hypothalamic releasing and inhibitory hormones, neuropeptides, peptides and others as cytokines, prostaglandins, oleamid, adenosine, nitric oxide. These factors regulate most physiologic processes and are likely elements integrating sleep with physiology and physiology with sleep in health and disorders.

  9. Purification, crystallization and preliminary X-ray analysis of OsAREB8 from rice, a member of the AREB/ABF family of bZIP transcription factors, in complex with its cognate DNA

    International Nuclear Information System (INIS)

    Miyazono, Ken-ichi; Koura, Tsubasa; Kubota, Keiko; Yoshida, Takuya; Fujita, Yasunari; Yamaguchi-Shinozaki, Kazuko; Tanokura, Masaru

    2012-01-01

    OsAREB8 from rice (O. sativa), a member of the AREB/ABF family of bZIP transcription factors, was expressed, purified and crystallized using the sitting-drop vapour-diffusion method. A crystal of OsAREB8 in complex with its cognate DNA diffracted X-rays to 3.65 Å resolution. The AREB/ABF family of bZIP transcription factors play a key role in drought stress response and tolerance during the vegetative stage in plants. To reveal the DNA-recognition mechanism of the AREB/ABF family of proteins, the bZIP domain of OsAREB8, an AREB/ABF-family protein from Oryza sativa, was expressed in Escherichia coli, purified and crystallized with its cognate DNA. Crystals of the OsAREB8–DNA complex were obtained by the sitting-drop vapour-diffusion method at 277 K with a reservoir solution consisting of 50 mM MES pH 6.4, 29% MPD, 2 mM spermidine, 20 mM magnesium acetate and 100 mM sodium chloride. A crystal diffracted X-rays to 3.65 Å resolution and belonged to space group C222, with unit-cell parameters a = 155.1, b = 206.7, c = 38.5 Å. The crystal contained one OsAREB8–DNA complex in the asymmetric unit

  10. Environmental factors and leukaemia

    Energy Technology Data Exchange (ETDEWEB)

    Brandt, L

    1985-01-01

    Investigations on the association between environmental hazards and the development of various types of leukaemia are reviewed. Regarding acute non-lymphocytic leukaemia (ANLL) exposure to ionizing radiation is a well-documented risk factor. According to several recent studies exposure to strong electromagnetic fields may be suspected to be of etiologic importance for ANLL. There is evidence that occupational handling of benzene is a risk factor and other organic solvents may also be leukaemogenic. Occupational exposure to petrol products has been proposed to be a risk factor although the hazardous substances have not yet been defined. Results of cytogenetic studies in ANLL suggest that exposure to certain environmental agents may be associated with relatively specific clonal chromosome aberrations. Exposure in utero to ionizing radiation has been proposed to be a risk factor for acute lymphocytic leukaemia (ALL) in children. Unlike ANLL there seems at present to be little evidence that ALL is related to exposure to some chemicals. Chronic myeloid leukaemia (CML) may follow exposure to high doses of ionizing radiation whereas such exposure seems to be of insignificant importance for the development of chronic lymphocytic leukaemia (CLL). According to some studies an abnormally high incidence of CLL may be found among farmers in the USA. These results have not been confirmed in Scandinavian studies. There seems to be little evidence that CML or CLL are related to occupational handling of some chemicals. 35 references.

  11. Hyperglycemia: a prothrombotic factor?

    NARCIS (Netherlands)

    Lemkes, B. A.; Hermanides, J.; DeVries, J. H.; Holleman, F.; Meijers, J. C. M.; Hoekstra, J. B. L.

    2010-01-01

    Diabetes mellitus is characterized by a high risk of atherothrombotic events. What is more, venous thrombosis has also been found to occur more frequently in this patient group. This prothrombotic condition in diabetes is underpinned by laboratory findings of elevated coagulation factors and

  12. Thermal disadvantage factor

    International Nuclear Information System (INIS)

    Abdullah, K.M.S.; Loyalka, S.K.

    1990-01-01

    A method is described where reactor cell flux and the disadvantage factor are calculated by using diffusion theory in the moderator and integral transport in the fuel. The method is efficient (noniterative) and provides results that agree well with Monte Carlo, P 5 and ABH results

  13. Threshold factorization redux

    Science.gov (United States)

    Chay, Junegone; Kim, Chul

    2018-05-01

    We reanalyze the factorization theorems for the Drell-Yan process and for deep inelastic scattering near threshold, as constructed in the framework of the soft-collinear effective theory (SCET), from a new, consistent perspective. In order to formulate the factorization near threshold in SCET, we should include an additional degree of freedom with small energy, collinear to the beam direction. The corresponding collinear-soft mode is included to describe the parton distribution function (PDF) near threshold. The soft function is modified by subtracting the contribution of the collinear-soft modes in order to avoid double counting on the overlap region. As a result, the proper soft function becomes infrared finite, and all the factorized parts are free of rapidity divergence. Furthermore, the separation of the relevant scales in each factorized part becomes manifest. We apply the same idea to the dihadron production in e+e- annihilation near threshold, and show that the resultant soft function is also free of infrared and rapidity divergences.

  14. Fibroblast growth factor 23

    African Journals Online (AJOL)

    Dr Olaleye

    Systemic phosphate homeostasis is maintained through several hormonal mechanisms which involve fibroblast growth factor 23 (FGF-23), α-klotho, vitamin D and parathyroid hormone. FGF-23 is known to be the major regulator of phosphate balance (Mirams et al., 2004). FGF-23 is a phosphaturic hormone, which is.

  15. Human factors information system

    International Nuclear Information System (INIS)

    Goodman, P.C.; DiPalo, C.A.

    1991-01-01

    Nuclear power plant safety is dependent upon human performance related to plant operations. To provide improvements in human performance, data collection and assessment play key roles. This paper reports on the Human factors Information System (HFIS) which is designed to meet the needs of the human factors specialists of the United States Nuclear Regulatory Commission. These specialists identify personnel errors and provide guidance designed to prevent such errors. HFIS is a simple and modular system designed for use on a personal computer. It is designed to contain four separate modules that provide information indicative of program or function effectiveness as well as safety-related human performance based on programmatic and performance data. These modules include the Human Factors Status module; the Regulatory Programs module; the Licensee Event Report module; and the Operator Requalification Performance module. Information form these modules can either be used separately or can be combined due to the integrated nature of the system. HFIS has the capability, therefore, to provide insights into those areas of human factors that can reduce the probability of events caused by personnel error at nuclear power plants and promote the health and safety of the public. This information system concept can be applied to other industries as well as the nuclear industry

  16. PATTERNS AND FACTORS INVOLVED

    African Journals Online (AJOL)

    Between 1*' of July 1996 and 30'h of June 2000 a total of 3583 patients were registered at the accident and emergency unit of Nnamdi. Azikiwe ... The case files of these were reviewed with a view to ascertaining the causes and factors involved in the deaths of these patients. The .... H.I.V/AIDS related complications 23 6.8.

  17. Introduction to human factors

    International Nuclear Information System (INIS)

    Winters, J.M.

    1988-03-01

    Some background is given on the field of human factors. The nature of problems with current human/computer interfaces is discussed, some costs are identified, ideal attributes of graceful system interfaces are outlined, and some reasons are indicated why it's not easy to fix the problems

  18. Prognostic factors in oligodendrogliomas

    DEFF Research Database (Denmark)

    Westergaard, L; Gjerris, F; Klinken, L

    1997-01-01

    An outcome analysis was performed on 96 patients with pure cerebral oligodendrogliomas operated in the 30-year period 1962 to 1991. The most important predictive prognostic factors were youth and no neurological deficit, demonstrated as a median survival for the group younger than 20 years of 17...

  19. Factors affecting mining costs

    International Nuclear Information System (INIS)

    Lowell, A.F.

    1977-01-01

    The subject is discussed under the following headings: investment decision-making, unit cost factors (declining ore grade, low-price contracts, ore grade/output relationship, above average cost increases). Economic, environmental, sociological and political aspects are considered. (U.K.)

  20. Human factors in network security

    OpenAIRE

    Jones, Francis B.

    1991-01-01

    Human factors, such as ethics and education, are important factors in network information security. This thesis determines which human factors have significant influence on network security. Those factors are examined in relation to current security devices and procedures. Methods are introduced to evaluate security effectiveness by incorporating the appropriate human factors into network security controls

  1. Electromagnetic form factors

    International Nuclear Information System (INIS)

    Desplanques, B.

    1987-01-01

    Electromagnetic form factors, in first approximation, are sensitive to spatial distribution of nucleons and to their current. In second approximation, more precise effects are concerned, whose role is increasing with momentum transfer and participating essentially of short range nuclei description. They concern of course the nucleon-nucleon interaction while approaching each other and keeping their free-state identity, but also mutually polarizing one the other. In this last effect, radial and orbital excitations of nucleon, the nucleon mesonic cloud modification and the nucleon antinucleon pair excitation are included. In this paper, these contributions are discussed while trying to find the important elements for a good description of form factors. Current questions are also discussed. Light nuclei are essentially concerned [fr

  2. Researching organizational factors

    International Nuclear Information System (INIS)

    Coffman, F.

    1991-01-01

    This paper discusses feedback and insights from experience (both successful and unsuccessful) with the past and the ongoing organizational factors research. That experience suggests a leading set of ingredients that appear proper for performing regulatory research on organizational processes. By keeping focused upon these proper ingredients, the research will contribute to the regulatory assessments of utility management through the use of improved methods and measures in investigations, inspections, diagnostics, performance indicators, and PRA insights. This paper is organized into (1) an introductory description of what the agency is doing to assess organizational effectiveness, (2) some insights from past and ongoing research, (3) an opinion on a leading set of ingredients to properly research organizational factors, and (4) a summary

  3. On braid monodromy factorizations

    Energy Technology Data Exchange (ETDEWEB)

    Kharlamov, V M [Institut de Recherche Matematique Avanee Universite Louis Pasteur et CNRS 7 rue Rene Descartes (France); Kulikov, Vik S [Steklov Mathematical Institute, Russian Academy of Sciences (Russian Federation)

    2003-06-30

    We introduce and develop a language of semigroups over the braid groups to study the braid monodromy factorizations (bmf's) of plane algebraic curves and other related objects. As an application, we give a new proof of Orevkov's theorem on the realization of bmf's over a disc by algebraic curves and show that the complexity of such a realization cannot be bounded in terms of the types of factors of the bmf. We also prove that the type of a bmf distinguishes Hurwitz curves with singularities of inseparable type up to H-isotopy and J-holomorphic cuspidal curves in CP{sup 2} up to symplectic isotopy.

  4. Prevalencia de depresión y factores asociados con ella en la población colombiana The prevalence of and factors associated with depression in Colombia

    Directory of Open Access Journals (Sweden)

    Carlos Gómez-Restrepo

    2004-12-01

    Full Text Available OBJETIVOS: Analizar la prevalencia del síndrome depresivo y los factores asociados con la depresión en Colombia entre los años 2000 y 2001. MÉTODOS: Para este estudio descriptivo de corte transversal se aplicó una encuesta entre noviembre de 2000 y enero de 2001 a 1 116 adultos de 18 años de edad o más de uno u otro sexo que residían en viviendas particulares seleccionadas mediante un muestreo representativo nacional polietápico, estratificado según el grado de urbanización del área incluida en el muestreo. La depresión se clasificó en breve, subclínica o clínica (leve, moderada o grave en los 30 días y los 12 meses previos a la entrevista. Se calcularon las frecuencias simples y estratificadas por la edad y el sexo, y los intervalos de confianza de 95% (IC95% de más de 500 variables. La asociación de las variables seleccionadas con episodios depresivos se evaluó mediante un modelo de regresión logística con múltiples variables. RESULTADOS: De las personas estudiadas, 10,0% (IC95%: 9,2 a 10,7 presentaron algún episodio depresivo en los 12 meses previos a la encuesta y 8,5% (IC95%: 7,8 a 9,2 sufrieron alguno durante el último mes. Hubo una mayor proporción de mujeres con depresión en ambos períodos. Más de 50% de los episodios fueron moderados, tanto en hombres como en mujeres, y las mayores prevalencias se encontraron en las personas mayores de 45 años. Los factores asociados con la depresión en el último mes fueron ser mujer, considerar el estado de salud propio como regular o malo, sufrir de dolores o molestias, tener dificultades en las relaciones interpersonales, consumir marihuana o sustancias adictivas, medicamentos estimulantes o calmantes, tener dependencia del alcohol, o estar desempleado con discapacidad. CONCLUSIÓN: La depresión es una afección frecuente en Colombia. Se deben poner en marcha medidas dirigidas a reducir el riesgo de depresión, especialmente en mujeres y en personas mayores de 45 a

  5. Factors in Agile Methods Adoption

    Directory of Open Access Journals (Sweden)

    Samia Abdalhamid

    2017-05-01

    Full Text Available There are many factors that can affect the process of adopting Agile methods during software developing. This paper illustrates the critical factors in Agile methods adoption in software organizations. To present the success and failure factors, an exploratory study is carried out among the critical factors of success and failure from existing studies. Dimensions and Factors are introduced utilizing success and failure dimensions. The mind map was used to clarify these factors.

  6. Factors of academic procrastination

    OpenAIRE

    Kranjec, Eva; Košir, Katja; Komidar, Luka

    2017-01-01

    This study investigated dimensions of perfectionism, anxiety, and depression as factors of academic procrastination. Our main research interest was to examine the role of specific dimensions of perfectionism as moderators in the relationship between anxiety and depression and academic procrastination. Four scales were administered on the sample of 403 students: perfectionism scale FMPS, academic procrastination scale APS-SI, depression scale CESD and anxiety scale STAI-X2. The results showed ...

  7. Concentration factors for fish

    International Nuclear Information System (INIS)

    Feldt, W.; Lauer, R.; Melzer, M.; Siebert, W.

    1978-01-01

    Concentration factors are defined as operators allowing to calculate the specific activity of fish meat from a given concentration of an element in the water. This parameter depends among others from the content of stable isotopes and homologues in the different waters. If this parameter is reasonably to be used for model calculations it must be referred to water with all of its content substances, these calculations also being based on this type of 'water'. (orig.) [de

  8. Prognostic factors for medulloblastoma

    International Nuclear Information System (INIS)

    Jenkin, Derek; Al Shabanah, Mohamed; Al Shail, Essam; Gray, Alan; Hassounah, Maher; Khafaga, Yasser; Kofide, Amani; Mustafa, Mahmoud; Schultz, Henrik

    2000-01-01

    Purpose: To evaluate prognostic factors for medulloblastoma. Methods and Materials: One hundred and seventy-three consecutive patients with medulloblastoma, treated at King Faisal Specialist Hospital (KFSH) from 1988-1997, were reviewed. Eighty-four percent were children less than 15 years old. From 1988-1994, treatment was at the discretion of the investigator. From 1994-1998, patients entered a single-arm best practice protocol in which, in staged patients, the surgical intent was total resection, standard radiation treatment was defined, and adjuvant chemotherapy was given to a 'high-risk' subset. Results: For 150 patients who completed surgical and radiation treatment, the 5-year survival rate was 58%, compared with 0% for 16 patients who were unable to start or complete radiation treatment. For staged patients, the 5-year survival was M0 + M1, 78% and M2 + M3, 21% (p 14 years and gross cystic/necrotic features in the primary tumor. The size of the primary tumor, the degree of hydrocephalus at diagnosis, the presence of residual tumor in the post-operative CT/MRI, and the functional status of the patient prior to radiation treatment were not significant factors. Conclusions: Stage M0 + M1 was the most powerful favorable prognostic factor. In Saudi Arabia more patients present with advanced disseminated disease, 41% M2 + M3, than in the West, and this impacts adversely on overall survival. Total resection and standard radiation treatment were not sensitive prognostic factors in a treatment environment in which 78% of patients underwent at least 90% tumor resection and 60% received standard radiation treatment. In order to improve the proportion of patients able to complete radiation treatment, consideration should be given to limiting resection when the attainment of total resection is likely to be morbid, and to delaying rather than omitting radiation treatment in the patient severely compromised postoperatively

  9. Risk factors for cancer

    International Nuclear Information System (INIS)

    Lyman, G.H.

    1992-01-01

    It is no longer reasonable to divide cancers into those that are genetic in origin and those that are environmental in origin. With rare exception, carcinogenesis involves environmental factors that directly or indirectly exert a change in the cell's genome. Virtually all causes of cancer are multifactorial, sometimes involving an inherited predisposition to the carcinogenic effects of environmental factors, which include chemicals, ionizing radiation, and oncogenic virus. Carcinogenesis is a multistep process including induction, promotion, and progression. Initiation requires an irreversible change in the cellular genome, whereas promotion is commonly associated with prolonged and reversible exposure. Tumor progression results in genotypic and phenotypic changes associated with tumor growth, invasion, and metastasis. Most information on human cancer risk is based on epidemiologic studies involving both exposed and unexposed individuals. The quality of such studies depends on their ability to assess the strength of any association of exposure and disease and careful attention to any potential bias. Few cancers are inherited in a Mendelian fashion. Several preneoplastic conditions, however, are clearly inherited and several malignancies demonstrate weak familial patterns. Environmental factors may exert their effect on DNA in a random fashion, but certain consistent changes, including specific translocations of genetic information, are often found. Currently, there is great interest in the close proximity of certain oncogenes governing growth control to the consistent chromosomal changes observed. Such changes may represent a final common pathway of action for environmental carcinogens. Sufficient laboratory and epidemiologic evidence exists to establish a causal association of several chemical agents with cancer

  10. Human factoring administrative procedures

    International Nuclear Information System (INIS)

    Grider, D.A.; Sturdivant, M.H.

    1991-01-01

    In nonnuclear business, administrative procedures bring to mind such mundane topics as filing correspondence and scheduling vacation time. In the nuclear industry, on the other hand, administrative procedures play a vital role in assuring the safe operation of a facility. For some time now, industry focus has been on improving technical procedures. Significant efforts are under way to produce technical procedure requires that a validated technical, regulatory, and administrative basis be developed and that the technical process be established for each procedure. Producing usable technical procedures requires that procedure presentation be engineered to the same human factors principles used in control room design. The vital safety role of administrative procedures requires that they be just as sound, just a rigorously formulated, and documented as technical procedures. Procedure programs at the Tennessee Valley Authority and at Boston Edison's Pilgrim Station demonstrate that human factors engineering techniques can be applied effectively to technical procedures. With a few modifications, those same techniques can be used to produce more effective administrative procedures. Efforts are under way at the US Department of Energy Nuclear Weapons Complex and at some utilities (Boston Edison, for instance) to apply human factors engineering to administrative procedures: The techniques being adapted include the following

  11. Human Factors Review Plan

    International Nuclear Information System (INIS)

    Paramore, B.; Peterson, L.R.

    1985-12-01

    ''Human Factors'' is concerned with the incorporation of human user considerations into a system in order to maximize human reliability and reduce errors. This Review Plan is intended to assist in the assessment of human factors conditions in existing DOE facilities. In addition to specifying assessment methodologies, the plan describes techniques for improving conditions which are found to not adequately support reliable human performance. The following topics are addressed: (1) selection of areas for review describes techniques for needs assessment to assist in selecting and prioritizing areas for review; (2) human factors engineering review is concerned with optimizing the interfaces between people and equipment and people and their work environment; (3) procedures review evaluates completeness and accuracy of procedures, as well as their usability and management; (4) organizational interface review is concerned with communication and coordination between all levels of an organization; and (5) training review evaluates training program criteria such as those involving: trainee selection, qualification of training staff, content and conduct of training, requalification training, and program management

  12. Human Factors Review Plan

    Energy Technology Data Exchange (ETDEWEB)

    Paramore, B.; Peterson, L.R. (eds.)

    1985-12-01

    ''Human Factors'' is concerned with the incorporation of human user considerations into a system in order to maximize human reliability and reduce errors. This Review Plan is intended to assist in the assessment of human factors conditions in existing DOE facilities. In addition to specifying assessment methodologies, the plan describes techniques for improving conditions which are found to not adequately support reliable human performance. The following topics are addressed: (1) selection of areas for review describes techniques for needs assessment to assist in selecting and prioritizing areas for review; (2) human factors engineering review is concerned with optimizing the interfaces between people and equipment and people and their work environment; (3) procedures review evaluates completeness and accuracy of procedures, as well as their usability and management; (4) organizational interface review is concerned with communication and coordination between all levels of an organization; and (5) training review evaluates training program criteria such as those involving: trainee selection, qualification of training staff, content and conduct of training, requalification training, and program management.

  13. Human and Organizational Factors

    International Nuclear Information System (INIS)

    Eshiett, P.B.S.

    2016-01-01

    The Human and Organizational Factors Approach to Industrial Safety (HOFS) consists of identifying and putting in place conditions which encourage a positive contribution from operators (individually and in a team) with regards to industrial safety. The knowledge offered by the HOFS approach makes it possible better to understand what conditions human activity and to act on the design of occupational situations and the organization, in the aim of creating the conditions for safe work. Efforts made in this area can also lead to an improvement in results in terms of the quality of production or occupational safety (incidence and seriousness rates) (Daniellou, F., et al., 2011). Research on industrial accidents shows that they rarely happen as a result of a single event, but rather emerge from the accumulation of several, often seemingly trivial, malfunctions, misunderstandings, incorrect assumptions and other issues. The nuclear community has established rigorous international safety standards and concepts to ensure the protection of people and the environment from harmful effects of ionizing radiation (IAEA, 2014). A review of major human induced disasters in a number of countries and in different industries yields insights into several of the human and organizational factors involved in their occurrence. Some of these factors relate to failures in: • Design or technology; • Training; • Decision making; • Communication; • Preparation for the unexpected; • Understanding of organizational interdependencies

  14. Molecular factors in migraine

    Science.gov (United States)

    Kowalska, Marta; Prendecki, Michał; Kozubski, Wojciech; Lianeri, Margarita; Dorszewska, Jolanta

    2016-01-01

    Migraine is a common neurological disorder that affects 11% of adults worldwide. This disease most likely has a neurovascular origin. Migraine with aura (MA) and more common form - migraine without aura (MO) – are the two main clinical subtypes of disease. The exact pathomechanism of migraine is still unknown, but it is thought that both genetic and environmental factors are involved in this pathological process. The first genetic studies of migraine were focused on the rare subtype of MA: familial hemiplegic migraine (FHM). The genes analysed in familial and sporadic migraine are: MTHFR, KCNK18, HCRTR1, SLC6A4, STX1A, GRIA1 and GRIA3. It is possible that migraine is a multifactorial disease with polygenic influence. Recent studies have shown that the pathomechanisms of migraine involves both factors responsible for immune response and oxidative stress such as: cytokines, tyrosine metabolism, homocysteine; and factors associated with pain transmission and emotions e.g.: serotonin, hypocretin-1, calcitonin gene-related peptide, glutamate. The correlations between genetic variants of the HCRTR1 gene, the polymorphism 5-HTTLPR and hypocretin-1, and serotonin were observed. It is known that serotonin inhibits the activity of hypocretin neurons and may affect the appearance of the aura during migraine attack. The understanding of the molecular mechanisms of migraine, including genotype-phenotype correlations, may contribute to finding markers important for the diagnosis and treatment of this disease. PMID:27191890

  15. Structuring factoring business: accounting aspects

    Directory of Open Access Journals (Sweden)

    I.M. Vygivska

    2017-08-01

    Full Text Available The article theoretically substantiates the fact that factoring belongs to the main operational activity of a factoring company, and this allowed structuring the factoring business by types of activity. The lack of a unified approach to the classification of factoring (factoring services made it possible to systematize and refine their classification as a basis for developing accounting and analytical support for risk management of factoring business. The authors single out such classification signs as: the right of the reverse claim (reverse, irretrievable, a territorial feature (international, internal, the subject of the factoring contract (real, consensual, the availability of notification of the debtor (conventional, confidential. The structuring of factoring business contributes to the identification of the risks of the economic activities of a factoring company depending on the type of factoring, the development of methodological support for the bookkeeping of factoring transactions in a risk environment, the search for risk management practices and the determination of management effectiveness in general.

  16. How a Brazilian Firm is Sustainably Solving the Problems of Urban Slums, One Community at a Time Une entreprise brésilienne résout durablement les problèmes des bidonvilles urbains, communauté par communauté Cómo una empresa brasileña está resolviendo de manera sostenible los problemas de las favelas, comunidad por comunidad

    Directory of Open Access Journals (Sweden)

    Diana de Castro

    2012-06-01

    économie formelle, 2 les gouvernements résolvent les problèmes complexes et onéreux associés aux bidonvilles urbains et collectent les impôts et 3 les propriétaires sont dédommagés pour les terres occupées. La stratégie de régularisation durable des terres mise en oeuvre par Terra Nova constitue ainsi une solution digne et stimulante d’officialisation des droits de propriété.Terra Nova, un emprendimiento social con fines de lucro, ayuda a los habitantes de favelas –asentamientos  urbanos marginales– a obtener el título de propiedad legal de la parcela que ocupan de manera irregular. Gracias a la gestión de todos los aspectos del proceso de regularización de la propiedad, Terra Nova habilita a los residentes de la comunidad a comprar la parcela en la que viven, formalizando un recurso importante y catalizando el crecimiento económico. Este proceso permite al gobierno implementar las infraestructuras indispensables como el agua corriente, sistemas de saneamiento, electricidad y pavimentación de calles. El proceso brinda un triple resultado (beneficios sociales, medioambientales y económicos a estas favelas, transformando recursos muertos en capitales que benefician a todas las partes interesadas: 1 los residentes de la comunidad adquieren una propiedad, pueden acceder al crédito y dan el paso de transición para entrar a la economía formal; 2 los gobiernos resuelven los complejos y costosos problemas asociados con los asentamientos urbanos marginales y recaudan impuestos; y 3 los antiguos propietarios son compensados por la parcela que ha sido ocupada. La metodología de Terra Nova para lograr la regularización sostenible de la propiedad brinda una solución digna y motivadora a la formalización de los derechos de propiedad.A Terra Nova é uma empresa social, com fins lucrativos, que auxilia os moradores de assentamentos precários a obter o título de propriedade das áreas que foram ocupadas irregularmente. Ao gerenciar todos os aspectos do processo de

  17. Démarche d’intervention sur l’organisation du travail afin d’agir sur les problèmes de santé mentale au travail Approach to work organization intervention in order to take action on mental health problems in the workplace Proceso de intervención sobre la organización del trabajo con el fin de actuar sobre los problemas de salud mental en el trabajo

    Directory of Open Access Journals (Sweden)

    Louise St-Arnaud

    2010-11-01

    Full Text Available Les problèmes de santé mentale au travail représentent actuellement un problème de santé publique et économique majeur. Bien que le caractère pathogène de certaines dimensions de l’organisation du travail sur la santé mentale ait été largement documenté, la recherche portant sur l’identification de stratégies efficaces pour réduire ces contraintes est peu développée. Prenant appui sur un cadre d’intervention d’une démarche participative sur l’organisation du travail, un groupe d’intervenants et de chercheurs en santé mentale au travail a expérimenté à plusieurs reprises la démarche proposée, en y intégrant un processus d’évaluation en continu. Chaque étape de la démarche a été revue en considérant les actions et les méthodes utilisées et ce, en tenant compte de l’expérience des intervenants et des observations faites dans les interventions en cours. Ce qui a été appris à partir des expériences menées dans les milieux de travail et à partir de la littérature a été utilisé pour modifier, améliorer ou préciser la démarche d’intervention. Cet article présente en détail chacune des étapes d’une démarche d’intervention préventive en santé mentale au travail, telle que revue par un processus d’expérimentation et d’évaluation en continu.Mental health problems in the workplace currently represent a public health and major economic problem. While the pathogenic impact of certain dimensions of work organization on mental health has been widely documented, research on the identification of effective strategies for reducing these constraints has not been extensively developed. Founded on an intervention framework of a participatory work organization process, a group of practitioners and researchers in mental health in the workplace tested the proposed process on several occasions, by integrating a continuous evaluation process into it. Each step in the process was reviewed by

  18. Milestones and Impact Factors

    Directory of Open Access Journals (Sweden)

    Grandjean Philippe

    2010-07-01

    Full Text Available Abstract Environmental Health has just received its first Impact Factor by Thomson ISI. At a level of 2.48, this achievement is quite satisfactory and places Environmental Health in the top 25% of environmental science journals. When the journal was launched in 2002, it was still unclear whether the Open Access publishing model could be made into a viable commercial enterprise within the biomedical field. During the past eight years, Open Access journals have become widely available, although still covering only about 15% of journal titles. Major funding agencies and institutions, including prominent US universities, now require that researchers publish in Open Access journals. Because of the profound role of scientific journals for the sharing of results and communication between researchers, the advent of Open Access may be of as much significance as the transition from handwriting to printing via moveable type. As Environmental Health is an electronic Open Access journal, the numbers of downloads at the journal website can be retrieved. The top-20 list of articles most frequently accessed shows that all of them have been downloaded over 10,000 times. Back in 2002, the first article published was accessed only 49 times during the following month. A year later, the server had over 1,000 downloads per month, and now the total number of monthly downloads approaches 50,000. These statistics complement the Impact Factor and confirm the viability of Open Access in our field of research. The advent of digital media and its decentralized mode of distribution - the internet - have dramatically changed the control and financing of scientific information dissemination, while facilitating peer review, accelerating editorial handling, and supporting much needed transparency. Both the meaning and means of "having an impact" are therefore changing, as will the degree and way in which scientific journals remain "factors" in that impact.

  19. Factor 4 planning

    International Nuclear Information System (INIS)

    Bariol-Mathais, Brigitte; Lavoillotte, Philippine; Gall-Sorrentino, Florence; Malez, Marianne; Sanna, Daniela; Marsauche, Maud; Marquet, Sarah; Debergue, Sophie; Aminu, Olufunmi; Bernard, Helene; Marchand, Jean-Michel; Blin, Frederic; Grange, Jerome; Caillierez, Sophie; Muller, Dania; Clement, Bob; Desire, Jean-Charles; Metais, Benedicte; Lannuzel, Philippe; Pezet-Kuhn, Murielle; Pons, Anne; Rivoire-Meley, Benedicte; Tissot, Heloise

    2015-07-01

    Factor 4 is the goal of cutting our greenhouse gas emissions by 75% by 2050. Achieving this objective will necessitate radical changes in our practices, in particular concerning transport and housing; the measures currently implemented, such as positive-energy buildings, low-impact mobility and eco-neighbourhoods, will not be enough to meet this goal. These measures must be conceived in the framework of broad territorial planning that integrates environmental and energy objectives far upstream. To this end, the French Environment and Energy Management Agency (ADEME) and the French network of Urban Planning Agencies (FNAU), pursuing their missions in their respective areas of competence, have joined forces to make infrastructure and land use planning an integral part of the environmental and energy transition process. In 2013, the two organisations signed a partnership agreement and compiled an inventory of practices that are relevant to Factor 4 planning. This work was led by Epures, Saint-etienne urban planning agency, along with FNAU, drawing upon the expertise of a dozen urban planning agencies in precursor territories. This inventory describes the stakes, resources and strengths for each territory, which have led to cross-sectoral territorial planning exercises with ambitious environmental and energy objectives; the importance of evaluation in attaining these goals is emphasised. Current experience, questions and available methodological tools are summarised in this document, to encourage territories and help them design their planning policies along a trajectory to achieve Factor 4 goals. The compilation also aims to be a contribution to the COP21 climate conference

  20. Accidents and human factors

    International Nuclear Information System (INIS)

    Nishiwaki, Y.; Kawai, H.; Morishima, H.; Terano, T.; Sugeno, M.

    1984-01-01

    When the TMI accident occurred it was 4 a.m., an hour when the error potential of the operators would have been very high. The frequency of car and train accidents in Japan is also highest between 4 a.m. and 6 a.m. The error potential may be classified into five phases corresponding to the electroencephalogramic pattern (EEG). At phase 0, when the delta wave appears, a person is unconscious and in deep sleep; at phase I, when the theta wave appears, he is very tired, sleepy and subnormal; at phase II, when the alpha wave appears, he is normal, relaxed and passive; at phase III, when the beta wave appears, he is normal, clear-minded and active; at phase IV, when the strong beta or epileptic wave appears, he is hypernormal, excited and incapable of normal judgement. Should an accident occur at phase II, the brain condition may jump to phase IV. At this phase the error or accident potential is maximum. The response of the human brain to different types of noises and signals may vary somewhat for different individuals and for different groups of people. Therefore, the possibility that such differences in brain functions may influence the mental structure would be worthy of consideration in human factors and in the design of man-machine systems. Human reliability and performance would be affected by many factors: medical, physiological and psychological, etc. The uncertainty involved in human factors may not necessarily be probabilistic, but fuzzy. Therefore, it would be important to develop a theory by which both non-probabilistic uncertainties, or fuzziness, of human factors and the probabilistic properties of machines can be treated consistently. From the mathematical point of view, probabilistic measure is considered a special case of fuzzy measure. Therefore, fuzzy set theory seems to be an effective tool for analysing man-machine systems. To minimize human error and the possibility of accidents, new safety systems should not only back up man and make up for his

  1. Speeding Fermat's factoring method

    Science.gov (United States)

    McKee, James

    A factoring method is presented which, heuristically, splits composite n in O(n^{1/4+epsilon}) steps. There are two ideas: an integer approximation to sqrt(q/p) provides an O(n^{1/2+epsilon}) algorithm in which n is represented as the difference of two rational squares; observing that if a prime m divides a square, then m^2 divides that square, a heuristic speed-up to O(n^{1/4+epsilon}) steps is achieved. The method is well-suited for use with small computers: the storage required is negligible, and one never needs to work with numbers larger than n itself.

  2. Improved Balanced Incomplete Factorization

    Czech Academy of Sciences Publication Activity Database

    Bru, R.; Marín, J.; Mas, J.; Tůma, Miroslav

    2010-01-01

    Roč. 31, č. 5 (2010), s. 2431-2452 ISSN 0895-4798 R&D Projects: GA AV ČR IAA100300802 Grant - others:GA AV ČR(CZ) M100300902 Institutional research plan: CEZ:AV0Z10300504 Source of funding: I - inštitucionálna podpora na rozvoj VO Keywords : preconditioned iterative methods * sparse matrices * incomplete decompositions * approximate inverses * Sherman-Morrison formula * nonsymmetric matrices Subject RIV: BA - General Mathematics Impact factor: 1.725, year: 2010

  3. Sleep-inducing factors.

    Science.gov (United States)

    García-García, Fabio; Acosta-Peña, Eva; Venebra-Muñoz, Arturo; Murillo-Rodríguez, Eric

    2009-08-01

    Kuniomi Ishimori and Henri Piéron were the first researchers to introduce the concept and experimental evidence for a chemical factor that would presumably accumulate in the brain during waking and eventually induce sleep. This substance was named hypnotoxin. Currently, the variety of substances which have been shown to alter sleep includes peptides, cytokines, neurotransmitters and some substances of lipidic nature, many of which are well known for their involvement in other biological activities. In this chapter, we describe the sleep-inducing properties of the vasoactive intestinal peptide, prolactin, adenosine and anandamide.

  4. "Factor Analysis Using ""R"""

    Directory of Open Access Journals (Sweden)

    A. Alexander Beaujean

    2013-02-01

    Full Text Available R (R Development Core Team, 2011 is a very powerful tool to analyze data, that is gaining in popularity due to its costs (its free and flexibility (its open-source. This article gives a general introduction to using R (i.e., loading the program, using functions, importing data. Then, using data from Canivez, Konold, Collins, and Wilson (2009, this article walks the user through how to use the program to conduct factor analysis, from both an exploratory and confirmatory approach.

  5. Perinatal risk factors for strabismus

    DEFF Research Database (Denmark)

    Torp-Pedersen, Tobias; Boyd, Heather A; Poulsen, Gry

    2010-01-01

    Little is known about the aetiological factors underlying strabismus. We undertook a large cohort study to investigate perinatal risk factors for strabismus, overall and by subtype.......Little is known about the aetiological factors underlying strabismus. We undertook a large cohort study to investigate perinatal risk factors for strabismus, overall and by subtype....

  6. Activation of human factor V by factor Xa and thrombin

    International Nuclear Information System (INIS)

    Monkovic, D.D.; Tracy, P.B.

    1990-01-01

    The activation of human factor V by factor Xa and thrombin was studied by functional assessment of cofactor activity and sodium dodecyl sulfate-polycarylamide gel electrophoresis followed by either autoradiography of 125 I-labeled factor V activation products or Western blot analyses of unlabeled factor V activation products. Cofactor activity was measured by the ability of the factor V/Va peptides to support the activation of prothrombin. The factor Xa catalyzed cleavage of factor V was observed to be time, phospholipid, and calcium ion dependent, yielding a cofactor with activity equal to that of thrombin-activated factor V (factor Va). The cleavage pattern differed markedly from the one observed in the bovine system. The factor Xa activated factor V subunits expressing cofactor activity were isolated and found to consist of peptides of M r 220,000 and 105,000. Although thrombin cleaved the M r 220,000 peptide to yield peptides previously shown to be products of thrombin activation, cofactor activity did not increase. N-Terminal sequence analysis confirmed that both factor Xa and thrombin cleave factor V at the same bond to generate the M r 220,000 peptide. The factor Xa dependent functional assessment of 125 I-labeled factor V coupled with densitometric analyses of the cleavage products indicated that the cofactor activity of factor Xa activated factor V closely paralleled the appearance of the M r 220,000 peptide. The data indicate that factor Xa is as efficient an enzyme toward factor V as thrombin

  7. Organizational factors in Korean NPPs

    International Nuclear Information System (INIS)

    Jang, D. J.; Kim, Y. I.; Jeong, C. H.; Kim, J. W.

    2003-01-01

    Organizational factors are referred to as the factors that influence the achievement of a goal of an organization. Latent problems of an organization could contribute to causing human errors in such stages as design, operation and maintenance, and furthermore, leading to an severe accident. In order to evaluate an organization from the safety viewpoint, it is necessary to identify the organizational factors in a systematic fashion. In this paper, some efforts to identify the organizational factors in Korean NPPs are presented. The study was performed in the following steps: 1) Reviewing the definitions and range of the organizational factors used by the previous 13 researches, 2) Structuring the organizational factors by screening and collating factors, 3) Analysing the organizational factors that is considered to have contributed to the trip events based on the trip report of Korean NPPs, 4) Suggesting a more reliable taxonomy of organizational factors for event analysis by applying the Onion Structure Model to the selected factors

  8. Risk Factors in Pemphigus

    Directory of Open Access Journals (Sweden)

    Gülşen Tükenmez Demirc

    2011-09-01

    Full Text Available Background and Design: There have been reports suggesting the involvement of environmental factors in the disease process of pemphigus. In this study, we aimed to find out the risk factors which could play role in the etiopathogenesis in our pemphigus patients.Material and method: A total of 42 patients (15 male and 27 female who were diagnosed as pemphigus with histopathological and direct immunoflurosence examinations in our clinic between the years 1998-2004, were interviewed for assessment of regarding with the subjects of the demographic properties, occupational groups, educational level, the number of pregnancies, stressfull life events, diet habits, smoking and alcohol consumption before the onset of the disease and the results were compared to 42 age and gender-matched controls with similar socioeconomic circumstances. Results: Working in agriculture and livestock, multi-parity, absence of smoking and stressfull life events were found to be statistically significant in pemphigus patients than in controls. Conclusion: Working in agriculture and livestock, multi-parity, absence of smoking and stressfull life events were assumed to play role in the etiopathogenesis and course of pemphigus.

  9. Activation of 125I-Factor IX and 125I-Factor X: Effect of tissue factor and Factor VII, Factor Xsub(a) and thrombin

    International Nuclear Information System (INIS)

    Oesterud, B.; Rapaport, S.I.

    Activation of Factor IX and Factor X was studied by adding 125 I-Factor IX or 125 I-Factor X to reaction mixtures and quantitating cleavage products by reduced sodium dodecylsulfate gel electrophoresis. Thrombin failed to activate Factors IX or X; Factor Xsub(a) produced insignificant amounts of cleavage products of both factors. In contrast, the reaction product of tissue factor and Factor VII cleaved large amounts of both Factor IX and Factor X in purified systems and in plasma. In incubation mixtures of plasma containing added 125 I-Factor IX or 125 I-Factor X, tissue factor and Ca 2+ ions, the percentage of total radioactivity in the heavy chain peak of 125 I-IXsub(a) and the heavy chain of 125 I-Xsub(a) increased at a similar rate. When the tissue factor was diluted, similar curves were obtained for percent cleavage of 125 I-Factor IX and percent cleavage of 125 I-Factor X plotted against tissue factor concentration. These findings support the hypothesis that activation of Factor IX by the tissue factor-Factor VII reaction product represents a physiologically significant step in normal haemostasis. (author)

  10. Psychosomatic factors in pruritus.

    Science.gov (United States)

    Tey, Hong Liang; Wallengren, Joanna; Yosipovitch, Gil

    2013-01-01

    Pruritus and psyche are intricately and reciprocally related, with psychophysiological evidence and psychopathological explanations helping us to understand their complex association. Their interaction may be conceptualized and classified into 3 groups: pruritic diseases with psychiatric sequelae, pruritic diseases aggravated by psychosocial factors, and psychiatric disorders causing pruritus. Management of chronic pruritus is directed at treating the underlying causes and adopting a multidisciplinary approach to address the dermatologic, somatosensory, cognitive, and emotional aspects. Pharmcotherapeutic agents that are useful for chronic pruritus with comorbid depression and/or anxiety comprise selective serotonin reuptake inhibitors, mirtazapine, tricyclic antidepressants (amitriptyline and doxepin), and anticonvulsants (gabapentin, pregabalin); the role of neurokinin receptor-1 antagonists awaits verification. Antipsychotics are required for treating itch and formication associated with schizophrenia and delusion of parasitosis (including Morgellons disease). Copyright © 2013 Elsevier Inc. All rights reserved.

  11. Factorization of Observables

    Science.gov (United States)

    Eliaš, Peter; Frič, Roman

    2017-12-01

    Categorical approach to probability leads to better understanding of basic notions and constructions in generalized (fuzzy, operational, quantum) probability, where observables—dual notions to generalized random variables (statistical maps)—play a major role. First, to avoid inconsistencies, we introduce three categories L, S, and P, the objects and morphisms of which correspond to basic notions of fuzzy probability theory and operational probability theory, and describe their relationships. To illustrate the advantages of categorical approach, we show that two categorical constructions involving observables (related to the representation of generalized random variables via products, or smearing of sharp observables, respectively) can be described as factorizing a morphism into composition of two morphisms having desired properties. We close with a remark concerning products.

  12. Functional Maximum Autocorrelation Factors

    DEFF Research Database (Denmark)

    Larsen, Rasmus; Nielsen, Allan Aasbjerg

    2005-01-01

    MAF outperforms the functional PCA in concentrating the interesting' spectra/shape variation in one end of the eigenvalue spectrum and allows for easier interpretation of effects. Conclusions. Functional MAF analysis is a useful methods for extracting low dimensional models of temporally or spatially......Purpose. We aim at data where samples of an underlying function are observed in a spatial or temporal layout. Examples of underlying functions are reflectance spectra and biological shapes. We apply functional models based on smoothing splines and generalize the functional PCA in......\\verb+~+\\$\\backslash\\$cite{ramsay97} to functional maximum autocorrelation factors (MAF)\\verb+~+\\$\\backslash\\$cite{switzer85,larsen2001d}. We apply the method to biological shapes as well as reflectance spectra. {\\$\\backslash\\$bf Methods}. MAF seeks linear combination of the original variables that maximize autocorrelation between...

  13. Pion form factor

    Energy Technology Data Exchange (ETDEWEB)

    Ryong Ji, C.; Pang, A.; Szczepaniak, A. [North Carolina State Univ., Raleigh, NC (United States)

    1994-04-01

    It is pointed out that the correct criterion to define the legal PQCD contribution to the exclusive processes in the lightcone perturbative expansion should be based on the large off-shellness of the lightcone energy in the intermediate states. In the lightcone perturbative QCD calculation of the pion form factor, the authors find that the legal PQCD contribution defined by the lightcone energy cut saturates in the smaller Q{sup 2} region compared to that defined by the gluon four-momentum square cut. This is due to the contribution by the highly off-energy-shell gluons in the end point regions of the phase space, indicating that the gluon four-momentum-square cut may have cut too much to define the legal PQCD.

  14. Eukaryotic transcription factors

    DEFF Research Database (Denmark)

    Staby, Lasse; O'Shea, Charlotte; Willemoës, Martin

    2017-01-01

    Gene-specific transcription factors (TFs) are key regulatory components of signaling pathways, controlling, for example, cell growth, development, and stress responses. Their biological functions are determined by their molecular structures, as exemplified by their structured DNA-binding domains...... regions with function-related, short sequence motifs and molecular recognition features with structural propensities. This review focuses on molecular aspects of TFs, which represent paradigms of ID-related features. Through specific examples, we review how the ID-associated flexibility of TFs enables....... It is furthermore emphasized how classic biochemical concepts like allostery, conformational selection, induced fit, and feedback regulation are undergoing a revival with the appreciation of ID. The review also describes the most recent advances based on computational simulations of ID-based interaction mechanisms...

  15. Nucleon Electromagnetic Form Factors

    Energy Technology Data Exchange (ETDEWEB)

    Marc Vanderhaeghen; Charles Perdrisat; Vina Punjabi

    2007-10-01

    There has been much activity in the measurement of the elastic electromagnetic proton and neutron form factors in the last decade, and the quality of the data has greatly improved by performing double polarization experiments, in comparison with previous unpolarized data. Here we review the experimental data base in view of the new results for the proton, and neutron, obtained at JLab, MAMI, and MIT-Bates. The rapid evolution of phenomenological models triggered by these high-precision experiments will be discussed, including the recent progress in the determination of the valence quark generalized parton distributions of the nucleon, as well as the steady rate of improvements made in the lattice QCD calculations.

  16. Wave friction factor rediscovered

    Science.gov (United States)

    Le Roux, J. P.

    2012-02-01

    The wave friction factor is commonly expressed as a function of the horizontal water particle semi-excursion ( A wb) at the top of the boundary layer. A wb, in turn, is normally derived from linear wave theory by {{U_{{wb}}/T_{{w}}}}{{2π }} , where U wb is the maximum water particle velocity measured at the top of the boundary layer and T w is the wave period. However, it is shown here that A wb determined in this way deviates drastically from its real value under both linear and non-linear waves. Three equations for smooth, transitional and rough boundary conditions, respectively, are proposed to solve this problem, all three being a function of U wb, T w, and δ, the thickness of the boundary layer. Because these variables can be determined theoretically for any bottom slope and water depth using the deepwater wave conditions, there is no need to physically measure them. Although differing substantially from many modern attempts to define the wave friction factor, the results coincide with equations proposed in the 1960s for either smooth or rough boundary conditions. The findings also confirm that the long-held notion of circular water particle motion down to the bottom in deepwater conditions is erroneous, the motion in fact being circular at the surface and elliptical at depth in both deep and shallow water conditions, with only horizontal motion at the top of the boundary layer. The new equations are incorporated in an updated version (WAVECALC II) of the Excel program published earlier in this journal by Le Roux et al. Geo-Mar Lett 30(5): 549-560, (2010).

  17. [The Steel factor].

    Science.gov (United States)

    Cáceres-Cortés, J R

    1997-01-01

    Mice bearing mutations at either of two loci, dominant White spotting(W) or Steel(Sl), exhibit development defects in hematopoietic, melanocytic and germ cells. Genetics studies have shown that the SI locus encodes the Steel factor (SF), which is the ligand for the tyrosine kinase receptor c-kit, the product of the W locus. SF is synthesized in membrane-bound form and can be processed to produce a soluble form. Cell-cell interaction is important in the production of normal blood cells in vivo and in vitro and in the cellular expansion of leukemic cells. We discuss here how SF decreases the requirements in cell interaction for blast colony formation in acute myeloblastic leukemia (AML) and the presence of membrane-bound SF possibly contributes to the density-dependent growth of the AML blasts. We explain that SF is mainly a survival factor for hematopoietic cells, of little proliferative effect, which maintains CD34+ hematopoietic cells in an undifferentiated state. These properties would potentially allow the maintenance of hematopoietic cells in culture for the purpose of marrow purging or gene therapy. The activation of the c-kit signal transduction pathway may play a significant role in the development of many types of non-hematological malignancies by disrupting normal cell-cell interactions and allowing the growth of cancer cell populations. In summary, the properties of the SF indicate it has a role for survival signals during the process of normal differentiation, AML proliferation and in the maintenance of many c-kit+ tumors.

  18. Neutron quality factor

    International Nuclear Information System (INIS)

    1995-06-01

    Both the International Commission on Radiological Protection (ICRP) and the National Council on Radiation Protection and Measurements (NCRP) have recommended that the radiation quality weighting factor for neutrons (Q n , or the corresponding new modifying factor, w R ) be increased by a value of two for most radiation protection practices. This means an increase in the recommended value for Q n from a nominal value of 10 to a nominal value of 20. This increase may be interpreted to mean that the biological effectiveness of neutrons is two times greater than previously thought. A decision to increase the value of Q n will have a major impact on the regulations and radiation protection programs of Federal agencies responsible for the protection of radiation workers. Therefore, the purposes of this report are: (1) to examine the general concept of open-quotes quality factorclose quotes (Q) in radiation protection and the rationale for the selection of specific values of Q n ; and (2) to make such recommendations to the Federal agencies, as appropriate. This report is not intended to be an exhaustive review of the scientific literature on the biological effects of neutrons, with the aim of defending a particular value for Q n . Rather, the working group examined the technical issues surrounding the current recommendations of scientific advisory bodies on this matter, with the aim of determining if these recommendations should be adopted by the Federal agencies. Ultimately, the group concluded that there was no compelling basis for a change in Q n . The report was prepared by Federal scientists working under the auspices of the Science Panel of the Committee on Interagency Radiation Research and Policy Coordination (CIRRPC)

  19. Factores asociados a mastitis en vacas de la microcuenca lechera del altiplano norte de Antioquia, Colombia

    Directory of Open Access Journals (Sweden)

    Nicolás Ramírez Vásquez

    2011-12-01

    Full Text Available Se efectuó un estudio de corte sobre la prevalencia de mastitis bovina en una muestra representativa de las granjas lecheras del altiplano norte de Antioquia, Colombia. Se evaluaron los resultados del California Mastitis Test (CMT, Recuento de Células Somáticas (RCS y cultivo bacteriológico de leche, y se analizaron los factores de riesgo asociados a mastitis bovina. El análisis estadístico de la información se efectuó por medio de estadística descriptiva, análisis de razón de prevalencias y regresión logística multinivel. Con la prueba de CMT se detectó un 20% de cuartos afectados con mastitis, la prevalencia de mastitis subclínica por vaca fue del 39,5% y la de mastitis clínica fue del 1,7%. Se efectuaron 648 cultivos de muestras de leche, de las cuales 23,9% fueron negativas, 34% positivas a Streptococcus agalactiae y 10,2% a Estafilococo coagulasa negativo. El análisis de regresión reveló que las vacas que tuvieron más de seis meses de lactancia presentaron una Odds Ratio (OR de 2,65 en comparación con las de un mes de lactancia (p < 0,05. Se halló un OR de 1,24 para la asociación de la edad y la mastitis (p < 0,05. Para el lavado de manos se encontró un OR de 0,36 en comparación con no hacerlo (p < 0,05. En conclusión, se halló una alta frecuencia de mastitis por vaca. El microorganismo más hallado fue el Streptococcus agalactiae. El trauma podría ser una causa importante de mastitis dado que no se observó crecimiento bacteriano en 23,9% de los cultivos de muestras de leche de cuartos con mastitis.

  20. Dependecia a la nicotina en Bucaramanga, Colombia: Prevalencia y factores de riesgo. Nicotine dependecne in Bucaramanga, Colombia: Prevalence and risk factors

    Directory of Open Access Journals (Sweden)

    Germas Eduardo Rueda-Jaimes, MD

    2010-11-01

    Full Text Available Antecedentes: La dependencia a la nicotina (DN es la dependencia más frecuente en la población general colombiana; sin embargo, a la fecha no se conocen los factores asociados.Objetivo: Determinar la prevalencia y los factores asociados a DN en adultos del área urbana de Bucaramanga, Colombia. Método: Se diseñó un estudio poblacional transversal para estudiar una muestra probabilística de personas entre 18 y 65 años. La DN se determinó en fumadores diarios durante el último mes con la escala de Etter para dependencia al cigarrillo (CDS, con un punto de corte de 30/60. Mediante regresión logística se ajustaron las variables asociadas.Resultados: Participaron 2.496 personas con edad promedio de 38,0 años (DE=13,5, 69,7% mujeres. Un total de 250 (10,0% personas informaron consumo diario de cigarrillo; de este grupo, 154 (61,6% presentaron DN. La prevalencia ajustada de DN en la población global fue 5,6%. La DN fue más frecuente en varones (3,0; IC95% 2,0-4,4, en personas con menor escolaridad (OR=1,1; (IC95% 1,0-1,1, en personas empleadas (OR=1,5; IC95% 1,0-2,2, en residentes en estrato bajo (OR=1,7; IC95% 1,2-2,4, en consumidores diarios de café (OR=2,8; IC95% 1,9-4,1, en presencia de consumo abusivo de alcohol (OR=4,1; IC95% 2,4-7,2 y quienes informaron trastornos mentales comunes (OR=3,5; IC95% 2,3-5,1.Conclusiones: La prevalencia de DN es alta en la población general de Bucaramanga, Colombia. Dos tercios de los fumadores diarios presentan DN. La DN se asocia a consumo diario de café, consumo abusivo de alcohol y la presencia de trastornos mentales comunes.Background: Nicotine dependence (ND is the most common substance dependence in Colombian population. However, its factors associated are unknown. Objective: To establish the prevalence and factors associated with ND among adults in Bucaramanga, Colombia. Method: A cross-sectional study was done with adults aged between 18 and 65 years. Among current cigarette smokers, the ND

  1. Breastfeeding and Postpartum Amenorrhea in Rural Guatemala

    Directory of Open Access Journals (Sweden)

    Guido Pinto Aguirre

    2005-01-01

    Full Text Available La asociación entre los patrones de lactancia y el retorno de la menstruación de posparto es estudiada en mujeres rurales de Guatemala a partir del estudio longitudinal INCAP (1969-1977. En el estudio se distinguen entre mujeres que experimentaron la muerte de un infante antes del regreso de la menstruación, mujeres que quitaron la leche materna a sus hijos antes del regreso de la menstruación y mujeres que menstruaron mientras estaban lactando a sus hijos. Se encontró que el destete y mortalidad del infantil antes de la menstruación son factores de riesgo para el retorno de la menstruación. También se encontró que el bajo número de episodios de lactancia por día y una introducción temprana de alimentos sólidos en la dieta del infante son factores de riesgo significativos para el retorno de la menstruación de posparto.

  2. Factorization and non-factorization in diffractive hard scattering

    International Nuclear Information System (INIS)

    Berera, Arjun

    1997-01-01

    Factorization, in the sense defined for inclusive hard scattering, is discussed for diffractive hard scattering. A factorization theorem similar to its inclusive counterpart is presented for diffractive DIS. For hadron-hadron diffractive hard scattering, in contrast to its inclusive counterpart, the expected breakdown of factorization is discussed. Cross section estimates are given from a simple field theory model for non-factorizing double-pomeron-exchange (DPE) dijet production with and without account for Sudakov suppression

  3. Robust and Sparse Factor Modelling

    DEFF Research Database (Denmark)

    Croux, Christophe; Exterkate, Peter

    Factor construction methods are widely used to summarize a large panel of variables by means of a relatively small number of representative factors. We propose a novel factor construction procedure that enjoys the properties of robustness to outliers and of sparsity; that is, having relatively few...... nonzero factor loadings. Compared to the traditional factor construction method, we find that this procedure leads to a favorable forecasting performance in the presence of outliers and to better interpretable factors. We investigate the performance of the method in a Monte Carlo experiment...

  4. Influence of Clays on Borehole Stability : a Literature Survey Part One: Occurence of Drilling Problems. Physico-Chemical Description of Clays and of Their Interaction with Fluids Influence des argiles sur la stabilité des parois de puits : revue bibliographique. Première partie : les problèmes rencontrés lors du forage dans les argiles. Description physico-chimique des argiles et de leur interaction avec les fluides

    Directory of Open Access Journals (Sweden)

    Forsans T.

    2006-11-01

    . Taking into account physico-chemistry has been done generally using an osmoticpressure, with the assumption that the shales behave as a semi-permeable membrane. Even if this assumption is too simplistic, it is still used, but more refined models are being studied, which take into account variations in pore pressures and salinities. The fourth section deals with what actually occurs on application to real wellbore. Improvement of mud formulation tries to prevent any problem occurring during drilling. Evolution of formulation is described, from lime, oil, KCI to polymers additions, and to nowadays constraints brought by environment concerns : requirements may be opposite, and thus compromises must be found. Mud monitoring seems a good prospect. In a second part, availability of representative samples, artefacts related to the recovery and storage of samples as well as choice of experimental conditions are reviewed. It is recalled that downhole conditions are rarely taken into account, and problems like drying of the samples, which induces a suction pressure, anisotropy and cohesion of the samples are rarely considered. The conclusion emphasises that if swelling pressures can now be more precisely defined in hydration domains, the effects of physicochemistry on mechanical properties are still to be investigated more thoroughly. Further experiments should be set in conditions closer to downhole ones, and teams must work together to get all the data needed. This will allow proper stability modelling, with coupling of physico-chemistry and mechanics, to become a predictive tool. Cette revue bibliographique a été réalisée dans le cadre du programme STAR (STabilité des ARgiles entrepris par l'ARTEP (Association de Recherche sur les Techniques d'Exploitation du Pétrole. Elle se divise en quatre sections: La première section rappelle les problèmes spécifiques rencontrés lors du forage des argiles, qui représentent environ 70 % des formations traversées, et sont r

  5. Identifying the important factors in simulation models with many factors

    NARCIS (Netherlands)

    Bettonvil, B.; Kleijnen, J.P.C.

    1994-01-01

    Simulation models may have many parameters and input variables (together called factors), while only a few factors are really important (parsimony principle). For such models this paper presents an effective and efficient screening technique to identify and estimate those important factors. The

  6. External Factors, Internal Factors and Self-Directed Learning Readiness

    Science.gov (United States)

    Ramli, Nurjannah; Muljono, Pudji; Afendi, Farit M.

    2018-01-01

    There are many factors which affect the level of self-directed learning readiness. This study aims to investigate the relationship between external factors, internal factors and self-directed learning readiness. This study was carried out by using a census method for fourth year students of medical program of Tadulako University. Data were…

  7. Electromagnetic Hadronic Form-Factors

    International Nuclear Information System (INIS)

    Edwards, Robert G.

    2005-01-01

    We present a calculation of the nucleon electromagnetic form-factors as well as the pion and rho to pion transition form-factors in a hybrid calculation with domain wall valence quarks and improved staggered (Asqtad) sea quarks

  8. R-Factor for Alaska

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The rainfall-runoff erosivity factor (R-Factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The...

  9. Air Emissions Factors and Quantification

    Science.gov (United States)

    Emissions factors are used in developing air emissions inventories for air quality management decisions and in developing emissions control strategies. This area provides technical information on and support for the use of emissions factors.

  10. Integrated Factors Correlating Undergraduate Academic ...

    African Journals Online (AJOL)

    Integrated Factors Correlating Undergraduate Academic Achievement in Bayelsa State, Nigeria. ... AFRREV IJAH: An International Journal of Arts and Humanities ... Thus, it is study investigated the integrated factors determining academic performance of students in public secondary schools in Bayelsa State, Nigeria.

  11. Human Factors in Training

    Science.gov (United States)

    Barshi, Immanuel; Byrne, Vicky; Arsintescu, Lucia; Connell, Erin

    2010-01-01

    Future space missions will be significantly longer than current shuttle missions and new systems will be more complex than current systems. Increasing communication delays between crews and Earth-based support means that astronauts need to be prepared to handle the unexpected on their own. As crews become more autonomous, their potential span of control and required expertise must grow to match their autonomy. It is not possible to train for every eventuality ahead of time on the ground, or to maintain trained skills across long intervals of disuse. To adequately prepare NASA personnel for these challenges, new training approaches, methodologies, and tools are required. This research project aims at developing these training capabilities. By researching established training principles, examining future needs, and by using current practices in space flight training as test beds, both in Flight Controller and Crew Medical domains, this research project is mitigating program risks and generating templates and requirements to meet future training needs. Training efforts in Fiscal Year 09 (FY09) strongly focused on crew medical training, but also began exploring how Space Flight Resource Management training for Mission Operations Directorate (MOD) Flight Controllers could be integrated with systems training for optimal Mission Control Center (MCC) operations. The Training Task addresses Program risks that lie at the intersection of the following three risks identified by the Project: 1) Risk associated with poor task design; 2) Risk of error due to inadequate information; and 3) Risk associated with reduced safety and efficiency due to poor human factors design.

  12. Self-shielding factors

    International Nuclear Information System (INIS)

    Kaul, D.C.

    1982-01-01

    Throughout the last two decades many efforts have been made to estimate the effect of body self-shielding on organ doses from externally incident neutrons and gamma rays. These began with the use of simple geometry phantoms and have culminated in the use of detailed anthropomorphic phantoms. In a recent effort, adjoint Monte Carlo analysis techniques have been used to determine dose and dose equivalent to the active marrow as a function of energy and angle of neutron fluence externally incident on an anthropomorphic phantom. When combined with fluences from actual nuclear devices, these dose-to-fluence factors result in marrow dose values that demonstrate great sensitivity to variations in device type, range, and body orientation. Under a state-of-the-art radiation transport analysis demonstration program for the Japanese cities, sponsored by the Defense Nuclear Agency at the request of the National Council on Radiation Protection and Measurements, the marrow dose study referred to above is being repeated to obtain spectral distributions within the marrow for externally incident neutrons and gamma rays of arbitrary energy and angle. This is intended to allow radiobiologists and epidemiologists to select and to modify numbers of merit for correlation with health effects and to permit a greater understanding of the relationship between human and laboratory subject dosimetry

  13. Research organizational factors

    International Nuclear Information System (INIS)

    Coffman, F.D. Jr.

    1990-01-01

    Organizational processes at nuclear power plants should be sufficient to prevent accidents and to protect public health and safety upon the occurrence of an accident. The role of regulatory research is to confirm that agency assessments of organization processes are on a firm technical basis and provide for improvements in the NRC [Nuclear Regulatory Commission] programs. A firm technical basis is achieved by reducing uncertainties associated with methods and measures used to assess organization processes. The general objective for regulatory research is to confirm that the agency has a coherent understanding of the organizational processes that are individually necessary and are collectively sufficient for safe operations, methods are available to reliably characterize organizational processes, and measures exist to monitor changes in the key organizational processes. The first specific objective was to develop a method to translate organizational processes into PRAs. The discussion provides feedback and insights from experience with the past and the ongoing organizational factors research. That experience suggests a set of ingredients that appear proper for performing regulatory research on organizational processes. By keeping focused upon these proper ingredients, the research will contribute to the regulatory assessments of utility management through the use of improved methods and measures in investigations, inspections, diagnostics, performance indicators, and PRA insights

  14. BASIC FACTORS OF MARKET CONCENTRATION

    OpenAIRE

    V. Fyliuk

    2013-01-01

    The paper systemizes factors which reinforce trends towards market concentration in all economic systems. These factors include factors related to the general changes in economic environment such as globalization of the world economy, state structural and taxation policies, cycle of economic development and changes in consumer demand. They also include factors related to competition (intensification of competition, companies’ desire to monopolize market and present market structure) and scien...

  15. Human Factors in Marine Casualties

    Directory of Open Access Journals (Sweden)

    Jelenko Švetak

    2002-05-01

    Full Text Available Human factors play an important role in the origin of accidents,and it is commonly claimed that between seventy andninety-five percent of industrial and transport accidents involvehuman factors, see Figure 1.Some authorities, however, claim that ultimately, all accidentsinvolve human factors.

  16. Risks factoring business: accounting measurement

    Directory of Open Access Journals (Sweden)

    Z.V. Gutsaylyuk

    2015-06-01

    Full Text Available The paper carried out the identification of risk factors for the development of possible accounting software management. Studied theoretical and methodological aspects of the risk classification of factoring operations in the part of the risk assessment factors. It is proposed to consider the risks factors as the risk that is acceptable controlled by accounting instruments and the risks that can not be taken into account in the accounting records. To minimize the risk factor, accounting-driven tools, a method of self-insurance, which is a factor in the creation of provision for factoring transactions designed to cover unexpected expenses and losses. Provision for factoring factor will establish more stable conditions of financial activity and avoid the fluctuations of profit factor in relation to the writing off of losses on factoring operatsіyam.Developed proposals allow for further research to improve the organizational and methodological basis of accounting and analysis of information as a basis for providing risk management factor, particularly in terms of improving the evaluation questions such risks and their qualitative and quantitative analysis.

  17. Investing in systematic factor premiums

    NARCIS (Netherlands)

    Koedijk, Kees G.; Slager, Alfred M. H.; Stork, P.A.

    In this paper we investigate and evaluate factor investing in the US and Europe for equities and bonds. We show that factor-based portfolios generally produce comparable or better portfolios than market indices. We expand the analysis to other asset classes and factors, work with other optimisation

  18. Sparse and Robust Factor Modelling

    NARCIS (Netherlands)

    C. Croux (Christophe); P. Exterkate (Peter)

    2011-01-01

    textabstractFactor construction methods are widely used to summarize a large panel of variables by means of a relatively small number of representative factors. We propose a novel factor construction procedure that enjoys the properties of robustness to outliers and of sparsity; that is, having

  19. Risk Factor Assessment Branch (RFAB)

    Science.gov (United States)

    The Risk Factor Assessment Branch (RFAB) focuses on the development, evaluation, and dissemination of high-quality risk factor metrics, methods, tools, technologies, and resources for use across the cancer research continuum, and the assessment of cancer-related risk factors in the population.

  20. Renforcement des systèmes d'innovation agricole locaux en ...

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

    Journal articles. Integrating indigenous knowledge with conventional science : enhancing localised climate and weather forecasts in Nessa, Mulanje, Malawi. Journal articles. Vulnerability and adaptation of rain fed agriculture to climate change and variability in semi-arid Tanzania. Journal articles. Impacts of climate change ...