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Sample records for abejas jalea real

  1. Productos de la colmena secretados por las abejas: Cera de abejas, jalea real y veneno de abejas

    OpenAIRE

    Vit, Patricia

    2005-01-01

    Las abejas producen secreciones para la construcción, nutrición y defensa de la colonia, las cuales también pueden ser recolectadas y utilizadas por los apicultores. En esta revisión se presentan las funciones de la cera de abejas, la jalea real y el veneno de abejas en la colonia de abejas, sus definiciones, composición, usos, forma de recolección por el apicultor, y los requisitos de calidad. Se considera la utilidad referencial de las normas brasileñas para cera, jalea real y veneno de abe...

  2. Plan de comercialización para el posicionamiento de los productos apícolas (miel de abeja, jalea real y turrón) elaborados por la asociación de apicultores de la parroquia cacha “apica” en los supermercados mayoristas de la ciudad de Riobamba.

    OpenAIRE

    Chérrez Pazmiño, Ángel Yobani

    2015-01-01

    El objetivo del presente estudio fue elaborar un Plan de Comercialización para el Posicionamiento de los productos apícolas (Miel de abeja, Jalea real y Turrón) elaborados por la Asociación de productores apícolas “APICA” en los supermercados de la ciudad de Riobamba, con la finalidad que la empresa incremente el índice de sus ventas y estas generen mayores recursos económicos a los socios. Se realizó el estudio de mercado para determinar las preferencias de consumo de los productos apícolas...

  3. Jalea Real (tabletas masticables) una alternativa en el tratamiento de pacientes pediátricos con inmunodeficiencia celular

    OpenAIRE

    Odalis María de la Guardia Peña; Joan Espinaso Kuan; Tarsis Planas Viatel; Magdalena Sabigne Lamote

    2004-01-01

    Para evaluar la eficacia del uso de la Jalea Real (tabletas masticables) en el tratamiento de niños con inmunodeficiencias celulares, se estudió a 100 niños diagnosticados con esta afección, en la consulta de Inmunología del Hospital Infantil Norte Docente "Juan de la Cruz Martínez Maceira" de Santiago de Cuba; en los años 2000 al 2002. Se establecieron 3 grupos de tratamiento: grupo 1: Tratamiento habitual con levamisol y vitaminas; grupo 2: Tratamiento habitual más Jalea Real a mitad de dos...

  4. Efecto de la jalea real sobre la proliferación de los linfocitos humanos

    OpenAIRE

    del Valle Pérez, Lázaro O; Macías Abraham, Consuelo; Esquivel Suárez, Ileana; Rodríguez Amado, Jacqueline; Alpízar Olivares, Yulién; Torres Leyva, Isabel

    2001-01-01

    Se estudió el efecto in vitro de la jalea real (JR) sobre los linfocitos de 10 donantes voluntarios del Banco de Sangre del Instituto de Hematología e Inmunología mediante la prueba de transformación linfoblástica con el empleo de timidina tritiada. Se cultivaron 100 mL de la muestra (2 ´ 106 linf/mL) en las siguientes condiciones experimentales: 100 mL de RPMI 1640 suplementado con suero fetal bovino al 20 %, diluciones dobles de la JR (tableta 100 mg) desde 1:2 hasta 1:4096 respectivamente....

  5. Jalea Real (tabletas masticables una alternativa en el tratamiento de pacientes pediátricos con inmunodeficiencia celular

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    Odalis María de la Guardia Peña

    2004-03-01

    Full Text Available Para evaluar la eficacia del uso de la Jalea Real (tabletas masticables en el tratamiento de niños con inmunodeficiencias celulares, se estudió a 100 niños diagnosticados con esta afección, en la consulta de Inmunología del Hospital Infantil Norte Docente "Juan de la Cruz Martínez Maceira" de Santiago de Cuba; en los años 2000 al 2002. Se establecieron 3 grupos de tratamiento: grupo 1: Tratamiento habitual con levamisol y vitaminas; grupo 2: Tratamiento habitual más Jalea Real a mitad de dosis optima; grupo 3: Jalea Real a dosis optima. Se encontró una mejoría clínica y de laboratorio superior en los pacientes que usaron Jalea Real, sin aparición de reacciones adversas, aumento de la calidad de vida y del apetito, además de aumento del conteo de linfocitos T periféricos mediante la prueba de Roseta. Cuando se combinó Jalea Real con levamisol disminuyó considerablemente la aparición de neutropenia. De los resultados de este estudio se deriva que la Jalea Real pudiera ser usada como inmunomodulador celular.In order to evaluate the efficacy of the use of Royal Jelly (chewable tablets in children with cellular immunodeficiencies, 100 children that were diagnosed this affection at the Immunology Department of "Juan Cruz Martínez Maceira" Northern Children Teaching Hospital, in Santiago de Cuba, from 200 to 2002, were studied. 3 groups of treatment were established: group 1, usual treatment with levamisol and vitamins; group 2, usual treatment plus half of the optimun dose of Royal Jelly; group 3, Royal Jelly at optimum dose. A higher clinical and laboratory improvement was observed among patients using Royal Jelly. No adverse reactions were detected and there was an increase of the quality of life and of appetite . A rise of the peripheral T lymphocytes count was also proved by Roseta test. When the Royal Jelly was mixed with levamisol, the appearance of neutropenia decreased considerably. According to the results of this study, the

  6. PANAL DE ABEJAS [Material gráfico

    OpenAIRE

    Anonymous

    1990-01-01

    ENTRE LOS PRODUCTOS APÍCOLAS DESTACAN: LA MIEL, EL POLEN, LA CERA, LOS PROPÓLEOS, LA APITOXINA Y LA JALEA REAL. RETRATO DE SERAFÍN TALAVERA MOLINA ENSEÑANDO UN PANAL EN CORRALILLOS. Copia digital. Madrid : Ministerio de Educación, Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 2015

  7. Complejidad social y aprendizaje de tareas de forrajeo en abejas

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    MARISOL AMAYA-MÁRQUEZ

    2008-12-01

    Full Text Available Las predicciones sobre aprendizaje derivadas de los modelos de complejidad social y forrajeo central, fueron sometidas a prueba usando una especie de abeja social (Apis mellifera y una especie de abeja solitaria (Osmia lignaria, a las cuales les fue ofrecida una tarea de aprendizaje en el contexto de forrajeo de néctar. Ambas especies fueron expuestas a las mismas condiciones de forrajeo, donde 1 se cambió únicamente la molaridad de la recompensa entre las formas florales, y 2 se cambió únicamente el volumen de la recompensa. Los experimentos se hicieron con parches de flores artificiales utilizando dos variedades de color floral (azul y blanco para estandarizar las recompensas de néctar en cada situación experimental. Aunque las abejas sociales aprendieron más rápido que las solitarias cuando se les presentó un problema de diferencia de molaridad en la recompensa, no hubo una diferencia significativa con respecto al aprendizaje de diferencias en volumen de néctar. Adicionalmente, la tasa a la cual O. lignaria aprendió diferencias en el volumen de la recompensa, no difirió de la tasa a la cual A. melifera aprendió las diferencias de concentración del néctar. Los resultados no apoyan las predicciones de la teoría de la complejidad social, pero soportan las del modelo de forrajeo central.

  8. POTENCIAL DE LAS ABEJAS NATIVAS EN LA POLINIZACIÓN DE CULTIVOS

    OpenAIRE

    JOSE JAVIER QUEZADA-EUAN

    2009-01-01

    RESUMEN En esta nota se discute sobre la polinización de cultivos como una actividad potencial del cultivo de abejas nativas. Palabras clave: abejas nativas, polinación de cultivos ABSTRACT This note refers to the potential of native bees cultivation in crop polinization. Key words: native bees, crop polinization

  9. Abejas englosinas de Colombia (Hymenoptera: Apidae I. Claves ilustradas Abejas englosinas de Colombia (Hymenoptera: Apidae I. Claves ilustradas

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    Bonilla Gómez María Argenis

    1992-09-01

    Full Text Available One hundred and eight euglossine bee species are registered for Colombia, distributed in five genera: Aglae (1, Eufriesea (30, Euglossa (60, Eulaema (13 and Exaerete (4. New records for Colombia include: Eufriesea auripes, Ef. dressleri, Ef. fragrocara, Ef. xantha, Euglossa viridis, Eg. azureoviridis, Eg. cognata, Eg. singularis, EI. boliviensis, EI. seabrai and EI mocsaryi. Keys are given for males and females of Aglae, Exaerete, Eulaema and Eufriesea and for males of Euglossa of the 108 Colombian euglossines. A key for the subgenera of Euglossa is presented by the first time. Revisando diferentes fuentes de literatura y colecciones de abejas en Colombia y el exterior se encontró para Colombia un total de 108 especies de abejas de la subfamilia Euglossinae repartidas en 5 géneros: Aglae (1 especie, Eufriesea (30 especies, Euglossa (60 especies, Eulaema (13 especies y Exaerete (4 especies. Se registran por primera vez para Colombia 11 especies de abejas euglosinas: Eufriesea auripes, Ef. fragrocara, Ef. dressleri, Ef. xantha, Euglossa viridis, Eg. cognata, Eg. singularis, Eg. azureoviridis, Eulaema boliviensis, EI. seabrai y EI. mocsaryi. Se presentan claves para las 108 especies de los 5 géneros así, machos y hembras de Eufriesea, Exaerete y Aglae y los machos de Euglossa y por primera vez una clave para los subgéneros de Euglossa.

  10. Abejita Chicolon

    OpenAIRE

    Malaver Izquierdo, Leoncio

    2013-01-01

    La apicultura es el arte y la técnica de cuidar a las abejas, con fines profesionales para la venta de los productos como miel, polen, propóleo, jalea real y cera, obtenidos en la colmena. De allí que se dice que es un arte porque la apicultura no consiste en el cuidado directo de las abejas en comparación a otras especies de animales, porque las abejas son insectos socialmente muy evolucionados, con unas estrategias desarrolladas a un nivel muy alto para conseguir su supervivencia. El arte d...

  11. Caracterización preliminar de la jalea de propóleos al 10 % para uso estomatológico

    OpenAIRE

    Padró-Rodríguez, Lourdes; Chil-Núñez, Idelsys

    2014-01-01

    El propóleos constituye la base de muchas formulaciones farmacéuticas. El presente trabajo propone la caracterización preliminar de una jalea de propóleos para el tratamiento de la gingivitis. Se realizó un estudio en el Laboratorio de Tecnología Farmacéutica de la Universidad de Oriente en el periodo marzo-mayo 2013; por medio del empleo del método de incorporación se procedió a la elaboración de la jalea, a la cual se le evaluaron los parámetros de calidad establecidos. Los mismos mostraron...

  12. MEMORIA Y APRENDIZAJE EN LA ESCOGENCIA FLORAL DE LAS ABEJAS

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    MARISOL AMAYA

    2009-05-01

    Full Text Available RESUMEN Los polinizadores altamente especializados en su dieta, no hacen escogencias florales, ellos visitan un recurso específico siguiendo el dictado de la información almacenada en sus genes. En contraste, para la abeja social Apis mellifera una escogencia floral implica, la toma de una decisión, usualmente con criterio económico, basada en información aprendida y almacenada en alguna forma de memoria. Aunque existen numerosos estudios y modelos sobre la escogencia floral en abejas, la gran mayoría de éstos, han derivado sus conclusiones a partir de condiciones temporalmente fijas de la interacción. Muy pocos estudios han abordado la dinámica propia del contexto ecológico, en el cual el mercado floral de las abejas cambia con las estaciones del año y con los patrones diarios de antesis floral. Este cambio en la disponibilidad de especies florales enfrenta a los polinizadores, a realizar escogencias secuenciales acerca del alimento a explotar. En este trabajo abordo el tema del forrajeo secuencial en parches florales heterospecíficos, enfocándome en el uso que la abeja melífera hace de la información previamente aprendida en un contexto, cuando se enfrenta a la explotación de alimento en un contexto ecológicamente diferente. He realizado experimentos sobre escogencia floral simulando las condiciones de cambio del paisaje floral, exponiendo abejas individuales de A. mellifera a decidir sobre cuales especies forrajear en cada parche. Los resultados indican que la abeja invierte en procesos de aprendizaje en un muestreo inicial, pero una vez almacenada la información, utiliza una pieza de la información previamente aprendida (color para explotar parches florales heteroespecíficos siguiendo una imagen de búsqueda de color. En esta revisión discuto situaciones biológicas de la interacción planta-abeja, las cuales apoyan la idea que en la naturaleza el uso de imágenes de búsqueda de color por parte de abejas sociales puede

  13. Desarrollo y optimización de una jalea de piroxicam 0,5 %

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    Oscar García Pulpeiro

    Full Text Available Se desarrolló por primera vez en Cuba, una formulación de jalea de piroxicam al 0,5 %. Se tomó como referencia la composición de la formulación líder del mercado FELDENE GELâ, a la cual se le efectuaron algunas modificaciones. Se realizaron 4 experimentos en las evaluaciones preliminares que sirvieron de base para la etapa posterior de diseño y optimización de la formulación. Se aplicó un diseño de experimentos con mezcla, para lo cual se emplearon como variables independientes la concentración de Carbopol 940, trietanolamina y hidroxipropilmetilcelulosa. Se evaluó la influencia de estos componentes en el pH, el área de extensibilidad y en algunas propiedades organolépticas. A partir de estos resultados, se seleccionó una formulación óptima.

  14. GENÉTICA DEL COMPORTAMIENTO: ABEJAS, un ejemplo.

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    Guiomar Nates Parra

    2011-09-01

    Full Text Available El concepto de que el comportamiento de los animales esta determinado genéticamente no es nuevo si se considera que ya Darwin en su famosa obra El origen del hombre, en 1871 mencionaba que… “los rasgos del temperamento de los animales son heredados”. Pero solo hasta hace casi 50 años fue que la genética del comportamiento surgió como una especialidad importante dentro de la Genética; desde esa época muchos son los avances que refuerzan la idea generalmente aceptada de que todos los patrones comportamentales están determinados por componentes tanto ambientales como genotípicos. El análisis del control genético de un determinado comportamiento es complicado por el hecho de que las acciones primarias de un gene pueden afectar: 1. Los órganos sensoriales, cambiando la información recibida. 2. Sistemas intermedios (nervioso, endocrino, alterando capacidades de coordinación y percepción y 3. Órganos efectores, alterando la respuesta. Las mutaciones inducidas, que bloquean o alteran los patrones normales de comportamiento, proporcionan una herramienta muy útil para entender como los genes influencian la conducta (Hall et al, 1982. Al respecto hay muchos ejemplos, cuyo conocimiento ha servido para controlar o seleccionar caracteres indeseables o deseables (respectivamente, importantes para el mejoramiento en algunas especies animales. Por ejemplo, con la llegada de la abeja africanizada a América del Sur (Brasil,1958 (Kerr, 1967 llegaron también varios inconvenientes generados por el fuerte comportamiento defensivo de la nueva subespecie introducida (Apis mellifera scutellata , lo cual hizo que se iniciaran programas de investigación tendientes a conocer la biología y el comportamiento de la nueva especie introducida, de manera que se pudieran establecer cepas de abejas menos defensivas, conjuntamente con otras características como productividad o comportamiento higiénico. El establecimiento de las bases moleculares del

  15. PRIMER REGISTRO DE PARASITOIDISMO DE Melaloncha ronnai (DIPTERA: PHORIDAE EN ABEJAS AFRICANIZADAS EN COLOMBIA

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    Soraya Uribe-Celis

    2015-07-01

    Full Text Available Los fóridos del género Melaloncha, son conocidos por parasitar varias especies de abejas. En este trabajo se reporta por primera vez en Colombia el parasitoidismo de M. ronnai en Apis mellifera scutellata híbrida (abejas africanizadas y adicionalmente se describen algunos aspectos de la biología de este parasitoide. Las observaciones fueron realizadas en el Centro Apícola de la Universidad Nacional de Colombia, sede Medellín. Se obtuvieron en total 20 fóridos, identificados como M. ronnai los cuales emergieron de puparios formados en los tórax de abejas obreras muertas. Los parasitoides presentaron un periodo pupal de 28.18 ± 2.58 días y una duración de su ciclo de vida de aproximadamente 30.35 ± 3.42 días.

  16. EFECTO DE RECUBRIMIENTO DE ALMIDÓN DE YUCA Y CERA DE ABEJAS SOBRE EL CHONTADURO

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    ZULMA LIZETH TOSNE

    Full Text Available El chontaduro tiene alto valor nutritivo y es uno de los frutos más completos como alimento, sin embargo, es altamente perecedero lo que lo hace susceptible a sufrir daños que afectansu calidad y aceptación. Por lo anterior, se evaluó el efecto de un recubrimiento a base de almidón de yuca (variedad SM 707-17 modificado enzimáticamente y cera de abejas sobre lapérdida de peso, la firmeza, los grados Brix, la acidez titulable y la tasa respiratoriade frutos variedad roja en etapa pos cosecha, almacenados bajo condiciones ambientales (18oC y 77,7% de humedad relativa. Se usó un diseño completamente al azar con cuatro tratamientos: T1 muestra testigo, T2 con 0,5% de cera de abejas, T3 con 1,5% de cera de abejas, T4 con 2,5% de cera de abejas, todos adicionados de almidón de yuca modificado (al 4%, glicerina y carboximetilcelulosa (CMC. Se realizaron 3 réplicas y los resultados se sometieron a un análisis de varianza (α=0,05 usando el software SPSS 19, con un nivel de significancia (p<0,05 en las variables de respuesta, identificando T3 como el tratamiento con mayor incidencia, manteniendo las condiciones de calidad del chontaduro por un periodo adicional de 4 días.

  17. Unión de los antibióticos tilosina, tilmicosina y oxitetraciclina a proteínas presentes en abejas, larvas y productos de la colmena de Apis mellifera L Binding of tylosin, tilmicosin and oxytetracycline to proteins from honeybees, larvae and beehive products

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    F. J. Reynaldi

    2010-12-01

    Full Text Available Las abejas melíferas son afectadas por gran cantidad de enfermedades infecciosas principalmente producidas por bacterias, hongos, virus y parásitos eucariotas. Dentro de las ocasionadas por procariotas, la loque americana es una enfermedad extremadamente grave que afecta a larvas y pupas de abejas; su agente causal es la bacteria esporulada Paenibacillus larvae. La administración de antibióticos es la principal alternativa para el control de esta enfermedad en colmenares con altos niveles de infección. El objetivo del presente trabajo fue determinar, mediante un método biológico, la unión de los antibióticos tilosina, tilmicosina y oxitetraciclina a las proteínas presentes en abejas adultas, larvas menores de 72 horas, larvas mayores de 72 horas, jalea de obreras, miel y polen, con la finalidad de diseñar un modelo de ruta cinética de los antibióticos. Los límites de sensibilidad de la técnica de valoración de estos antibióticos fueron 0,05 μg/ml para tilosina y tilmicosina, y 0,01 μg/ml para oxitetraciclina. Los coeficientes de correlación fueron superiores a 0,90 y los coeficientes de variación intra e inter-ensayo inferiores al 5%. Tanto tilosina como oxitetraciclina presentaron un porcentaje de unión a proteínas de un 15% en promedio en tejidos y subproductos de la colmena, lo cual resultó inferior a lo observado con tilmicosina (29% en promedio. En conclusión, por sus características químicas, su actividad antimicrobiana y su baja tasa de unión a las abejas, larvas y subproductos de la colmena, la tilosina presenta propiedades farmacocinéticas que podrían representar una ventaja terapéutica para el tratamiento de la loque americana en colmenas.American Foulbrood (AFB caused by the spore-forming bacterium Paenibacillus larvae is the most serious disease of bacterial origin affecting larvae and pupae of honeybees. Antibiotics are used in many countries for the control of AFB in high incidence areas, but their

  18. Efecto bifidogénico de jalea de Lepidium meyenii Walp. “maca” en el recuento de Bifidobacterium bifidum en yogurt probiótico

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    María Elena León Marroú

    2011-06-01

    Full Text Available Los recuentos de Bifidobacterium bifidum en yogures probióticos tienden a disminuir de manera significativa por diferentes factores: pH, oxígeno disuelto, composición antagónica entre las especies, la composición química del medio, temperatura de almacenamiento, entre otros. Para asegurar que la eficacia de los productos que contienen B. bifidum sea máxima a menudo se incluyen factores bifidogénicos, los cuales tienen la propiedad de promover no solo el crecimiento adecuado, sino también su viabilidad durante el almacenamiento del producto final. El presente estudio investigó sobre el recuento de B. bifidum en yogurt probiótico elaborado en condiciones de laboratorio en relación a dos variables: adición de tres concentraciones diferentes de jalea de Lepidium meyenii “maca” (10 %, 20 % y 30 % y tiempo de almacenamiento. Se realizó el recuento de B. bifidum cada tres días, durante un mes. Se utilizó el método de recuento en placa por siembra en profundidad. Los resultados indicaron que todas las muestras a las que se añadieron jalea de L. meyenii “maca” en diferentes concentraciones mantuvieron recuentos de B. bifidum por encima de los valores establecidos por las normas internacionales. Se concluye que L. meyenii “maca”, en razón de algunos de sus componentes, ejerció un efecto bifidogénico y en concentración de 30 % de jalea fue mayor.

  19. Efecto bifidogénico de jalea de Lepidium meyenii Walp. “maca” en el recuento de Bifidobacterium bifidum en yogurt probiótico

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    María Elena León Marroú

    2011-01-01

    Full Text Available Los recuentos de Bifidobacterium bifidum en yogures probióticos tienden a disminuir de manera significativa por diferentes factores: pH, oxígeno disuelto, composición antagónica entre las especies, la composición química del medio, temperatura de almacenamiento, entre otros. Para asegurar que la eficacia de los productos que contienen B. bifidum sea máxima a menudo se incluyen factores bifidogénicos, los cuales tienen la propiedad de promover no solo el crecimiento adecuado, sino también su viabilidad durante el almacenamiento del producto final. El presente estudio investigó sobre el recuento de B. bifidum en yogurt probiótico elaborado en condiciones de laboratorio en relación a dos variables: adición de tres concentraciones diferentes de jalea de Lepidium meyenii “maca” (10 %, 20 % y 30 % y tiempo de almacenamiento. Se realizó el recuento de B. bifidum cada tres días, durante un mes. Se utilizó el método de recuento en placa por siembra en profundidad. Los resultados indicaron que todas las muestras a las que se añadieron jalea de L. meyenii “maca” en diferentes concentraciones mantuvieron recuentos de B. bifidum por encima de los valores establecidos por las normas internacionales. Se concluye que L. meyenii “maca”, en razón de algunos de sus componentes, ejerció un efecto bifidogénico y en concentración de 30 % de jalea fue mayor.

  20. Loci de rasgos binarios que influyen en la expresión del comportamiento higiénico de las abejas melíferas

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    Miguel E. Arechavaleta-Velasco; Greg J. Hunt; Marla Spivak; Carmen Camacho-Rea

    2011-01-01

    Este estudio se realizó para detectar loci de rasgos binarios (BTL) que influyen en la expresión del comportamiento higiénico de abejas obreras y para localizar marcadores genéticos asociados a estos BTL en un mapa de ligamiento. Se recolectaron abejas que realizaron el comportamiento higiénico y abejas que no realizaron el comportamiento higiénico de una colonia producto de una retrocruza. Se construyó un mapa genético utilizando marcadores AFLP generados a partir del ADN de las abejas que r...

  1. ABEJAS VISITANTES DE Mimosa pigra L. (MIMOSACEAE:COMPORTAMIENTO DE PECOREO Y CARGAS POLÍNICAS

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    CLARA ISABEL AGUILAR SIERRA

    2009-01-01

    Full Text Available RESUMEN Se estudiaron las cargas polínicas de 13 taxones de abejas capturadas visitando a Mimosa pigra en la zona de influencia del Embalse Porce II (Antioquia, Colombia. De los 21 tipos polínicos encontrados, M. pigra presenta el mayor porcentaje acumulado de colecta; Mimosa pudica, Piper aduncum, Solanum diversifolium, Warszewiczia coccinea y Psidium guajava, en su orden, se pueden considerar fuentes alternativas de polen, para varias de las especies de abejas cuyas cargas polínicas fueron analizadas. Dentro de las especies de abejas capturadas visitando a M. pigra se pueden diferenciar varios grupos según el tipo y abundancia relativa de los tipos polínicos encontrados en sus cargas. Uno de ellos, incluye a siete especies de abejas con más del 85% de granos de polen de M. pigra; otro, con cuatro especies de abejas que colectaron más del 94,5% del polen en M. pigra y M. pudica. Adicionalmente, se encontraron especies como Trigona dorsalis con cargas de M. pigra (59,4%, de S. diversifolium (37,8% y especies de abejas como Lasioglossum sp. 113, en cuyas cargas polínicas predominan los granos de polen de P. aduncum (61,8% y de W.coccinea (36,4%, en contraste con los de M. pigra (1,3%. En cuanto a la riqueza de tipos polínicos colectados por las abejas sobresalen Trigona muzoensis (12 tipos polínicos y T. dorsalis (10 tipos, lo cual refleja nichos tróficos más amplios para estas especies y deja duda sobre su constancia floral o hábitos de limpieza. Palabras clave: Mimosa pigra, cargas polínicas, tipos polínicos, abejas, polinización. ABSTRACT We studied the pollen loads of 13 taxa of wild bees visiting the flowers of Mimosa pigra on the influence zone of the Dam Project Porce II (Antioquia, Colombia. Out of 21 different pollen types, M. pigra represents the higuest percentage; Mimosa pudica, Piper aduncum, Solanum diversifolium, Warszewiczia coccinea and Psidium guajava, in that order, were also abundant, and are alternative

  2. Insuficiencia renal aguda con necrosis tubular aguda secundaria a picadura masiva de abejas

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    Gustavo A. Aroca - Martínez

    2006-01-01

    Full Text Available Leñador de 46 años consulta al servicio de nefrología, de la Clínica Renal de la Costa en Barranquilla, con episodio de insuficiencia renal aguda 48 horas después de haber sufrido múltiples picaduras por abejas africanizadas. Durante su estancia hospitalaria presentó incremento de enzimas musculares (AST LDH, y de pruebas de función renal, motivo por el cual fue dializado en varias ocasiones. Con mejoría total, se decide egresar y manejar ambulatoriamente. Se concluye que el caso se trata de una insuficiencia renal por necrosis tubular aguda por rabdomiolisis debida a la picadura múltiple de abejas africanizadas.

  3. DIVERSIDAD DE ABEJAS SIN AGUIJÓN (HYMENOPTERA:MELIPONINI UTILIZADAS EN MELIPONICULTURA EN COLOMBIA

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    Guiomar Nates Parra

    2013-09-01

    Full Text Available En Colombia se conoce la existencia de cerca de 120 especies de abejas nativas sin aguijón, muchas de las cuales tienen importantes usos y representaciones para diversos grupos sociales y culturales. A pesar de que su cría y manejo (meliponicultura, es una actividad que viene creciendo y tecnificándose en Latinoamérica y otras regiones del mundo, sus características y desarrollo en Colombia han sido poco documentados. Se presentan los resultados de entrevistas y visitas a 75 personas en 16 departamentos de Colombia, que cultivan 25 especies de abejas sin aguijón, agrupadas en 12 géneros. Se encontraron al menos nueve especies más sin identificación completa, se reportan cuatro nuevos registros para el país y se amplía la distribución para 21 taxones. Se presenta información sobre la distribución regional y altitudinal, el cultivo urbano y las denominaciones locales para las abejas. Se revisan algunas características de los géneros cultivados más comunes (Tetragonisca, Melipona, Paratrigona, Scaptotrigona, y Nannotrigona y se discute la importancia del vínculo entre diversidad biológica y cultural que se manifiesta en los nombres locales reportados. Ante un escenario mundial de expansión de la meliponicultura, se resaltan necesidades de investigación y riesgos para la conservación y manejo de la diversidad de abejas sin aguijón y los conocimientos asociados.

  4. Las abejas (Hymenoptera: Apoidea del Parque Nacional Natural Gorgona, Pacífico colombiano

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    Marcela González-Córdoba

    2014-02-01

    Full Text Available En este estudio se presenta la diversidad y abundancia de las abejas del PNN Gorgona. En tres visitas en intervalos de tres meses, se muestrearon seis zonas de la isla con cubierta vegetal variable. Los muestreos fueron indirectos usando (i trampas McPhail (cebadas con cineol, silicato de metilo y extracto clavos; (ii trampas Van Someren Rydon (con cebo de pescado o pollo o fruta podridos, (iii trampas Malaise y (iv trampas de luz y directos a lo largo de transectos de longitud indefinida, por períodos de una hora en cada área y se repitieron cuatro veces. Un total de 585 especímenes fueron capturados, de ellos, 443 pertenecen a Apidae (14 géneros, 141 a Halictidae (seis géneros y uno a Megachilidae. Con este informe, el inventario local de Abejas se eleva a 43 especies y 28 géneros. Trigona fulviventris guianae Cockerell, 1910 fue la especie más abundante, Euglossa ignita Smith, 1874 la más atraída por los cebos aromáticos y Megalopta genalis Smith, 1853 dominó durante la noche. Apis mellifera Linnaeus, 1758 no se encontró en los muestreos. La importancia de la Isla Gorgona, como sitio de la diversidad para las especies de abejas es discutida.

  5. Uso del polen de abeja en la alimentación de pollos de engorda

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    de Oliveira, Maria Cristina; Loch, Fernando Carlos; Montes da Silva, Diones; Carneiro Martins, Poliana; Teixeira, Adriely Suzian; Cunha Claro, Daniel

    2015-01-01

    El polen de abeja (PA) puede ser un complemento nutricional para los animales, ya que mejora la eficiencia del uso de nutrientes, lo que aumenta su absorción, acelera el crecimiento de los animales y mejora su rendimiento productivo. El efecto del PA en la dieta de pollos de engorda se evaluó sobre la digestibilidad, rendimiento, mucosa intestinal y calidad de la cama. Para evaluar la digestibilidad, se utilizaron 200 aves en un diseño de bloques al azar con cuatro tratamientos (0, 0.5, 1.0 y...

  6. Loci de rasgos binarios que influyen en la expresión del comportamiento higiénico de las abejas melíferas

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    Miguel E. Arechavaleta-Velasco

    2011-01-01

    Full Text Available Este estudio se realizó para detectar loci de rasgos binarios (BTL que influyen en la expresión del comportamiento higiénico de abejas obreras y para localizar marcadores genéticos asociados a estos BTL en un mapa de ligamiento. Se recolectaron abejas que realizaron el comportamiento higiénico y abejas que no realizaron el comportamiento higiénico de una colonia producto de una retrocruza. Se construyó un mapa genético utilizando marcadores AFLP generados a partir del ADN de las abejas que realizaron el comportamiento higiénico. Se realizó una prueba de bondad de ajuste a cada marcador del mapa para detectar desviaciones en el patrón de segregación esperado (1,1. Los marcadores que presentaron desviaciones significativas del patrón de segregación esperado en las abejas que realizaron el comportamiento higiénico, se generaron en el grupo de abejas que no realizó el comportamiento. Los marcadores que presentaron desviaciones en el patrón de segregación esperado en las abejas que realizaron el comportamiento higiénico pero no en el grupo que no realizó el comportamiento, se sometieron a una prueba de homogeneidad para detectar asociaciones entre el marcador y la expresión del comportamiento higiénico. Doce de los marcadores presentaron desviaciones en el patrón de segregación en las abejas que realizaron el comportamiento (P0.05, y nueve de los marcadores estuvieron asociados a la expresión del comportamiento higiénico (P<0.05. Los nueve marcadores genéticos representan siete BTL que influyen en la expresión del comportamiento higiénico de las abejas.

  7. La difusión de la teoría evolucionista de Lamarck en la revista La Abeja (1862-1870) de Barcelona

    OpenAIRE

    Camós Cabeceran, Agustí

    1997-01-01

    Between 1862 and 1864 Lamarck's works were diffused in Spain through a magazine called La Abeja which was edited by Antoni Bergnes de las Casas, and published in Barcelona. This may reveal a more important influence of Lamarck's theory on the introduction of evolutionary theories in Spain. La Abeja includes the translation of the Histoire naturelle des végétaux where Lamarck incorporated an early explanation of his theory of evolution; and a series of anonymous articles about the reproduction...

  8. Las abejas de Porce familia colletidae (hymenoptera: apoidea notas y claves para los géneros presentes en la zona de influencia del embalse Porce ii.

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    Smith Pardo Allan H.

    1999-12-01

    Full Text Available Se presentan claves taxonómicas a nivel de género para la identificación de las abejas colletidas de la zona de Influencia del Embalse Porce II (Porce, Antioquía, Colombia S.A. Adicionalmente se presentan algunas notas para los géneros de colletidos capturados durante el inventario de las abejas silvestres de la zona.

  9. Uso del polen de abeja en la alimentación de pollos de engorda

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    Maria Cristina de Oliveira

    2015-01-01

    Full Text Available El polen de abeja (PA puede ser un complemento nutricional para los animales, ya que mejora la eficiencia deluso de nutrientes, lo que aumenta su absorción, acelera el crecimiento de los animales y mejora su rendimientoproductivo. El efecto del PA en la dieta de pollos de engorda se evaluó sobre la digestibilidad, rendimiento,mucosa intestinal y calidad de la cama. Para evaluar la digestibilidad, se utilizaron 200 aves en un diseño debloques al azar con cuatro tratamientos (0, 0.5, 1.0 y 1.5 % de inclusión de PA y cinco repeticiones. Cuatrocientas(400 aves se utilizaron para evaluar el desempeño, la morfología de la mucosa intestinal y calidad de la cama,en un diseño completamente al azar con los cuatro tratamientos y cinco repeticiones. El polen tuvo un efectocuadrático en la digestibilidad aparente de la materia seca y extracto etéreo y un efecto lineal sobre laretención de calcio y en el valor de la energía metabolizable aparente. La inclusión de PA no influyó (P>0.05en el desempeño, rendimiento de la canal y las vísceras o el duodeno y el yeyuno a los 42 días, el íleon a los21 días y la calidad de la cama hasta 21 días de edad. El PA mejoró el rendimiento del páncreas, de vellosidades,la morfología en el duodeno y el yeyuno a los 21 días, y en el íleon a los 42 días y la volatilización de amoníaco.Como conclusión, incluyendo 1.5% de polen de abeja mejora la digestibilidad de los nutrientes y la morfologíaintestinal, pero no el comportamiento productivo.

  10. Aspectos energéticos de la recolección de néctar en la abeja doméstica

    OpenAIRE

    Moffat, Luciano

    2000-01-01

    Se analizó la modulación de la inversión energética de la abeja recolectora en la fuente de alimento en función del flujo de sacarosa provisto. Para ello, se puso a punto un dispositivo respirométrico que mide la tasa metabólica de la abeja en vuelo libre de recolección. Analizando el comportamiento de abejas individuales se encontró que tanto la tasa metabólica como Ia carga de buche aumentan con el flujo de sacarosa, pero para una misma carga la tasa metabólica aumenta con el flujo de sacar...

  11. Desarrollo y optimización de una jalea de piroxicam 0,5 % Development and optimization related to a 0.5 % Piroxican jelly

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    Oscar García Pulpeiro

    2009-12-01

    Full Text Available Se desarrolló por primera vez en Cuba, una formulación de jalea de piroxicam al 0,5 %. Se tomó como referencia la composición de la formulación líder del mercado FELDENE GELâ, a la cual se le efectuaron algunas modificaciones. Se realizaron 4 experimentos en las evaluaciones preliminares que sirvieron de base para la etapa posterior de diseño y optimización de la formulación. Se aplicó un diseño de experimentos con mezcla, para lo cual se emplearon como variables independientes la concentración de Carbopol 940, trietanolamina y hidroxipropilmetilcelulosa. Se evaluó la influencia de estos componentes en el pH, el área de extensibilidad y en algunas propiedades organolépticas. A partir de estos resultados, se seleccionó una formulación óptima.For the first time in Cuba a 0.5 % Piroxican jelly formula was developed. The point of reference was the leader formula from FELEDENE GELâ; market which underwent some modifications. During first assessments four experiments were carried out as basis for the later stage of formula design and optimization. An experimental design with mixture was applied using as independent variables the concentration of Carbopol 940, Trietanolamine, and Hidroxypropyl methylcellulose. Influence of these components on pH, the extensibility area, and on some organoleptic properties. From these results, an optimal formula was selected.

  12. La difusión de la teoría evolucionista de Lamarck en la revista La Abeja (1862-1870) de Barcelona

    OpenAIRE

    Camós Cabeceran, Agustí

    1997-01-01

    Between 1862 and 1864 Lamarck's works were diffused in Spain through a magazine called La Abeja which was edited by Antoni Bergnes de las Casas, and published in Barcelona. This may reveal a more important influence of Lamarck's theory on the introduction of evolutionary theories in Spain. La Abeja includes the translation of the Histoire naturelle des végétaux where Lamarck incorporated an early explanation of his theory of evolution; ...

  13. Micoflora asociada a granos de polen recolectados por abejas domésticas (Apis mellifera L

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    Carlos Manuel Bucio Villalobos

    2010-01-01

    Full Text Available Introducción: El polen cosechado de las explotaciones apícolas puede verse colonizado con hongos potencialmente toxigénicos durante su producción o almacenamiento, cuyas toxinas pueden tener consecuencias graves sobre la salud de las personas que lo consuman. El objetivo del presente trabajo fue cuantificar el grado de contaminación con hongos en 19 muestras de polen recolectado por las abejas, obtenidas en la ciudad de León, Gto. Método: 19 muestras de polen en diferentes presentaciones comerciales fueron obtenidas en tiendas naturistas de León, Gto., y fueron procesadas por triplicado colocando 100 gránulos sobre el medio de cultivo Papa Dextrosa Agar, e incubados por siete días a 25 °C. Al final del período de incubación se cuantificó el número de gránulos colonizados por los diferentes hongos. Resultados y Discusión: Los resultados mostraron que las tres muestras con mayor contaminación de hongos (98, 100 y 100 % fueron manejadas a granel, resultado similar al obtenido en un estudio previo realizado en 2007 con muestras recolectadas en la ciudad de Irapuato, Gto. Por otro lado, la contaminación de las muestras empacadas en envases de plástico duro (con y sin sellos en sus tapas tendieron a ser bajas, en contraste con lo encontrado en el estudio previo ya citado, donde hubo muestras envasadas de esa forma con más del 90 % de contaminación, lo que indica que el grado de contaminación no es consecuencia solamente de la forma de envasar el polen. La incidencia de los hongos encontrados fue en general baja: Aspergillus (3.6 %, Alternaria (3.6 %, Mucor (3.1 %, Fusarium (2.9 %, Penicillium (2.9 % y Rhizopus (0.7 %, habiéndose encontrado dentro del género Aspergillus la especie A. flavus, la cual puede incluir cepas capaces de producir aflatoxinas. Esta especie fue detectada en 4 de las 19 muestras analizadas, con incidencias de 27, 14, 10 y 1 %, las cuales fueron más altas que las encontradas en el estudio previo hecho en

  14. Especies nuevas de abejas de Cuba y La Española (Hymenoptera: Colletidae, Megachilidae, Apidae

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    Julio A. Genaro

    2001-12-01

    Full Text Available Se describen e ilustran cinco especies nuevas de abejas antillanas: Collectes granpiedrensis n. sp. (Cuba (Colletidae; Osmia (Diceratosmia stangei n. sp. (República Dominicana; Coelioxys (Cyrtocoelioxys alayoi n. sp. (Cuba; C. (Boreocoelioxys sannicolarensis n. sp. (Cuba (Megachilidae y Triepeolus nisibonensis n. sp. (República Dominicana (ApidaeFive new species of Antillean bees are described and illustrated: Colletes granpiedrensis n. sp. (Cuba (Colletidae is charaterized as follows: Head and mesosoma black, legs and metasoma brown. Dense brown hairs on head and mesosoma; white on frons and metasomal terga. Clypeus, frons and mesosoma with large punctures, lesser on vertex and metasoma. Malar space more wide than long. Male and female slightly similar, except in the apical margin of clypeus, supraclipeal area, and color of the pubescence on legs and sterna; Osmia (Diceratosmia stangei n. sp. (Dominican Republic (Megachilidae is charaterized as follows: Dark metallic green, metasoma black with metallic green reflections. Pubescence light; body with large, closed punctures. Female with violet reflections in tergum III and mandible tridentate; Coelioxys (Cyrtocoelioxys alayoi n. sp. (Cuba (Megachilidae is charaterized as follows: Female black, except basal area of mandibles, tegula, legs, lateral area of tergum I and sterna, reddish brown. Posterior margin of scutellum rounded. Apex of tergum VI with spine curved up. Sternum VI fringed with short, closed setae, and the apex with short spine; Coelioxys (Boreocoelioxys sannicolarensis n. sp. (Cuba (Megachilidae is charaterized as follows: Black, except antenna and tegula brown; legs and sterna reddish brown. Clypeal margin straight in profile. Gradular grooves on metasomal terga II and III distinct medially. Fovea on metasomal tergum II of male deep and short, and Triepeolus nisibonensis n. sp. (Dominican Republic (Apidae is charaterized as follows: Dorsal pubescence (short and dense on mesosoma

  15. Uso de la reología en la evaluación de la jalea dentífrica fluida

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    Nilia de la Paz Martín-Viaña

    2002-04-01

    Full Text Available Se estudió el comportamiento reológico de la jalea dentífrica fluida mediante el empleo de un rotoviscosímetro digital HAAKE y se determinó la viscosidad aparente con la utilización de un viscosímetro rotatorio Brookfield modelo RVF. La preparación se almacenó a diferentes condiciones térmicas. Se analizaron los resultados estadísticamente a través de un análisis de varianza para contrastar si existen diferencias significativas entre las medias de las poblaciones. Tras el estudio reológico se pudo llegar al criterio de que corresponde su comportamiento a un cuerpo con flujo no newtoniano pseudoplástico, con un buen grado de recuperación estructural. No se encontraron diferencias estadísticamente significativas con un nivel de confiabilidad del 95 % entre los valores de las medias de la viscosidad aparente de la preparación almacenada a diferentes temperaturas durante 48 semanas después de elaborada. La formulación diseñada resultó estable físicamente, al menos, bajo las condiciones y circunstancias experimentales en que se ha ensayado.The rheologic behavior of the fluid tooth gel was studied by using a HAAKE digital rotatory viscosimeter. The apparent viscosity was determined by a Brookfield RVF rotatory viscosimeter. The preparation was stored under different thermal conditions. The results were statistically analyzed through a variance analysis to know if there were significant differences among the means of the population. According to the rheologic study, it was concluded that its behavior corresponded to a body with non Newtonian pseudoplastic flow, with a good degree of structural recovery. Statistically significant differences were not found. A reliability level of 95 % was attained among the values of the means of the apparent viscosity of the preparation stored at different temperatures during 48 weeks after being made. The designed formulation proved to be physically stable, at least under the experimental

  16. Diagnóstico de enfermedades parasitarias en abejas africanizadas Apis mellifera en el municipio de Marsella, Risaralda, Colombia

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    Boris Daniel Velásquez Gutiérrez

    2016-06-01

    Full Text Available Las enfermedades parasitarias que afectan a las abejas melíferas causan importantes pérdidas económicas a la actividad apícola (Martínez et al., 2011, ya que los daños provocados por dichas parasitosis van desde la reducción en la producción de miel (Cornejo et al., 1974, hasta la pérdida total de las colmenas (De Jong, 1997. El objetivo de este estudio fue determinar la presencia y los niveles de infestación de las enfermedades parasitarias en abejas Apis mellifera de colmenas productoras de miel, ubicadas en el municipio de Marsella, Risaralda, Colombia. Para el diagnóstico se siguieron las recomendaciones del manual de las pruebas de diagnóstico y de las vacunas para los animales terrestres de la Organización Mundial de Sanidad Animal, en su capítulo de enfermedades apícolas (OIE 2008. Se analizaron mediante técnicas de microscopia, 85 muestras de abejas adultas, pertenecientes a 18 apicultores del municipio. Se determinó una alta prevalencia de Varroasis (100% y presencia de nosemiosis (6%; para el caso de acariosis todas las muestras fueron negativas. Un  75,29% (n=64 de las muestras positivas a Varroa, presento un nivel de infestación leve (≤ 3%, un 14,11% (n=12 presento un nivel moderado de infestación (entre 3 a 5 %, mientras que un 11% presento un nivel fuerte de infestación (superior a 5%.Las prácticas de manejo inadecuadas empleadas por los apicultores, tienen una fuerte relación con los niveles de infestación de los parásitos Varroa, presentando coeficientes de correlación positiva (r=0,64. Igualmente se determinó que los altos niveles de prevalencia e infestación de estos parásitos no afectaron el desarrollo productivo de las colmenas.

  17. Bromadiolona: un caso judicial relacionado con la muerte de abejas Bromadiolone: a judicial case related to bees death

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    Guillermo Pablo Salinas

    2011-12-01

    Full Text Available Como resultado de una investigación impulsada por la justicia, se analizaron muestras provenientes de un posible derrame intencional de plaguicidas sobre colmenas con abejas. En los análisis realizados se utilizó GC-MS previa extracción con solventes orgánicos. Debido a dificultades iniciales en la identificación de plaguicidas sobre tres de las muestras, se procedió al reprocesamiento de los cromatogramas utilizando selección de las relaciones de masas m/z 158, 173 y 143. Utilizando es herramienta analítica se obtuvieron los correspondientes cromatogramas, y los espectros de masas con coincidencia frente al divulgado para el producto de descomposición de bromadiolona (PDB, determinando que tanto las abejas como las colmenas habían tenido contacto con bromadiolona (3-[3-(4'-bromobifenil-4-il- 3-hidroxi-1-fenilpropil]-4- hidroxicumarina, un anticoagulante cumarínico de utilización agraria para combatir roedores, que parece ser prácticamente no tóxico para las abejas según informes internacionales. Se observó que en la literatura no se halla propuesta una estructura química definida para el PDB, lo cual podría constituir el fundamento para encarar trabajos futuros con el fin de elucidar el comportamiento de la droga madre en el contexto del caso.As a result of an investigation boosted by ordinary justice, samples from a probable deliberate spill of pesticide over bees and hives were analyzed. Solvent extractions and then GC-MS were used to perform the tests. Due to difficulties since the beginning in pesticide identification upon three samples, chromatograms were reprocessed using mass selection at m/z 158, 173 y 143 mass rates. The correspondent chromatograms were gathered by these analytical tool, and their mass spectrums were found coincident with the previously reported as bromadiolone decomposition product (BDP, showing that hives as well as bees had been in contact with bromadiolone (3-[3-(4'-bromobiphenyl-4-yl- 3-hydroxy

  18. La difusión de la teoría evolucionista de Lamarck en la revista La Abeja

    OpenAIRE

    Camós Cabeceran, Agustí

    1997-01-01

    La obra de Lamarck fue difundida, entre los años 1862 y 1865, por la revista La Abeja dirigida por Antoni Bergnes de las Casas y publicada en Barcelona. En dicha revista aparece explicada la teoría evolucionista de Lamarck tanto en la traducción de su obra. Histoire naturelle des végétaux, como en una serie de artículos anónimos sobre la reproducción de los seres vivos. Estos datos pueden revelar que, en la introducción del evolucionismo en España, la teoría evolucionista de Lamarck tuvo mayo...

  19. OBSERVACIONES SOBRE LA ESTRATIFICACIÓN VERTICAL DE ABEJAS EUGLOSINAS (APIDAE: EUGLOSSINI EN UN BOSQUE RIPARIO DE LA ORINOQUÍA COLOMBIANA

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    VÉLEZ DANNY

    2005-12-01

    Full Text Available Se realizaron observaciones sobre la distribución vertical de abejas euglosinas en un bosque ripario asociado al sistema de lagunas Mata-Mata (Meta-Colombia. Los estratos evaluados fueron: sotobosque (1.8 m, la parte media entre el dosel y sotobosque (12-16 m y el dosel (18-25 m. Un total de 33 machos pertenecientes a cinco especies de Eulaema y Euglossa fueron capturados usando Cineol en trampas de caída. Eulaema nigrita y Euglossa intersecta fueron las especies más abundantes y se capturaron en todos los estratos. En general, no se encontró ninguna diferencia significativa en la diversidad, la abundancia y la riqueza de abejas en los diferentes estratos del bosque.

  20. Variaciones hematológicas y de presión sanguínea en perros después de una picadura de abejas

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    Jorge Muñoz G.

    2013-03-01

    Full Text Available Objetivo. El objetivo de este estudio fue determinar los cambios hematológicos y de presión arterial en perros después de una picadura cutánea de abejas. Material y métodos. Se utilizaron 10 perros adultos, a los cuales se les inoculó veneno de abeja mediante una picadura cutánea controlada. De cada animal se extrajo una muestra de sangre previa y los 15 y 300 minutos post inoculación. Se registró la presión arterial sistólica (PAS, diastólica (PAD, media (PAM y de pulso (PP desde 15 minutos previos hasta 45 minutos posteriores a la inoculación. Resultados. El recuento de eritrocitos, el hematocrito y la concentración de hemoglobina se redujeron a los 15 minutos post-inoculación (p0.05. Conclusiones. La picadura cutánea de abejas produce un descenso transitorio del recuento de eritrocitos, hematocrito y concentración de hemoglobina, junto con una disminución en el recuento de reticulocitos y del recuento relativo de eosinófilos, sin alterar mayormente la presión sanguínea.

  1. Aspectos toxinológicos y biomédicos del veneno de las abejas Apis mellifera

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    Rafael Valderrama Hernández

    2003-03-01

    Full Text Available Bee venom includes organic components of low and high molecular weight such as simple peptides like apamin, polypeptides like mellitin and enzymes like phospholipase A2 and hyaluronidase. It was recently demonstrated that some citrates are also important components of this venom. Mellitin and phospholipase A2 are the main and more abundant components, around 75%, in a ratio of 3:1; mellitin interacts with human red blood cells membranes producing hemolysis; and phospholipase A2, the main allergen of the venom, may act as blocking agent causing respiratory paralysis. Apamin represents about 2% of the total venom; it is less toxic than the aforementioned substances and acts as a motor neurotoxin; it is also responsible for triggering a cardiostimulant effect similar to that of adrenergic drugs; it has antiarrhythmic properties as well. Peptide MCD (Mast Cell Degranulation factor constitutes 2% of the venom, and it is one of the components responsible for histamine and serotonin release. Additionally, other components have been identified such as acid phosphatase, norepinephrine, dopamine and histamine. This review discusses aspects of the conformation and function of the bee stinging apparatus, of venom composition and action and ofs the behavior and habits of these insects. Finally, handling and treatment of bees bites are discussed. Applied aspects of the European and Africanized bees are compared. El veneno de abejas incluye compuestos orgánicos de bajo y alto peso molecular. Se encuentran en él péptidos simples como la apamina, polipéptidos como la melitina y enzimas como la fosfolipasa A2 y la hialuronidasa; recientemente se demostró que algunos citratos son también componentes mayores del veneno. La melitina y la fosfolipasa A2 son los componentes principales y más abundantes, cerca del 75%, en una relación 3:1. La melitina se adhiere a las membranas de los glóbulos rojos, produciendo hemólisis; la fosfolipasa A2, el mayor de los

  2. Diseño y validación de un método espectrofotométrico para el control de calidad del piroxicam jalea 0,5 %

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    Yania Suárez Pérez

    Full Text Available La jalea de piroxicam al 0,5 % es un nuevo producto en fase de desarrollo de la Empresa Laboratorio "Roberto Escudero Díaz". En el presente trabajo se diseñó un método por espectrofotometría UV, para lo cual se empleó ácido clorhídrico etanólico como disolvente y 328 nm como longitud de onda de máxima absorción. Se estableció un procedimiento simple y rápido para procesar la muestra previa al análisis. Posteriormente se aplicó la validación de este según exigencias regulatorias actuales. El método resultó suficientemente específico, lineal, preciso y exacto en el rango de 3,125 a 9,375 µg/mL. Se aplicó a la cuantificación del principio activo en 3 lotes de la formulación desarrollada, con resultados satisfactorios sin diferencias estadísticamente significativas según el procesamiento aplicado.

  3. Biogeografía de las abejas de las orquídeas (Hymenoptera: Apidae: Euglossini en Colombia

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    Alejandro Parra-H.

    2007-08-01

    del país. Con base en el material de euglosinos depositados en la colección del LABUN, referencias bibliográficas, características morfológicas y comporamentales de la tribu, así como la localización geográfica y altitudinal de las especies, se desarrolló un análisis de correspondencia para determinar cómo las diferentes variables podrían estar implicadas en la distribución de los euglosinos en Colombia. Los resultados del análisis multivariado muestran que no hay una estrecha relación de las especies de euglosinos a las regiones naturales que ocupan, sino que dentro de las variables consideradas, el tamaño corporal (implicado en capacidad de vuelo y la termorregulación, la estructura social (asociada a aprovechamiento y optimización de recursos en el hábitat y la longitud de la lengua (relacionada con la preferencia y toma de néctares, generan la mayor variabilidad de la muestra. De acuerdo a las características morfológicas y comportamentales analizadas se propone un patrón biogeográfico para la distribución de las abejas euglosinas en Colombia.

  4. FRECUENCIA DE VARROOSIS Y NOSEMOSIS EN COLONIAS DE ABEJAS MELÍFERAS (Apis mellifera EN EL ESTADO DE ZACATECAS, MÉXICO

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    Carlos A. Medina-Flores

    2014-01-01

    Full Text Available El objetivo del trabajo fue determinar la frecuencia y grado de infestación de varroosis ( Var ro a destructor e infección de nosemosis ( Nosema spp. en colonias de abejas ( Apis mellifera del estado de Zacatecas, durante el otoño y la primavera. Se inspeccionaron 299 colonias comer - ciales de abejas distribuidas en 15 municipios pertenecientes a tres zonas ecológicas: 1 zona semiseca templada, 2 zona semiseca semicálida y 3 zona subhúmeda templada. La prevalencia general fue 2.3 % para la nosemosis y 88 % para la varroosis. El nivel de infestación de varroa varió significativa - mente ( P = 0.05 entre el otoño y la primavera, y entre zonas sólo varió en la primavera ( P < 0.001. Du - rante el otoño, 44 % de las colonias presentaron niveles de infestación ≥ 5 %, mientras que en la prima - vera sólo 28 % superó dicho nivel. Nosema spp. se observó solamente en 4.7 % de la población analizada en primavera; la mayoría de los casos (86 % se detectó en la zona semiseca semicálida. Los resultados indican que la varroosis es la parasitosis más común de las abejas melíferas adultas en Zacatecas. La nosemosis no representa un problema serio para la apicultura de la entidad, debido a la baja frecuencia.

  5. Diversidad y aspectos biológicos de abejas silvestres de un ambiente urbano y otro natural de la región central de Santa Fe, Argentina

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    Milagros DALMAZZO

    2010-01-01

    Full Text Available El objetivo del presente trabajo fue relevar el elenco de abejas silvestres en la región central de Santa Fe y comparar la diversidad de especies y aspectos biológicos en dos ambientes de una misma región. Las abejas fueron colectadas en el estrato herbáceo de la Reserva Universitaria “Escuela Granja” de la localidad Esperanza, y en la zona urbana de la localidad Susana, ambas ubicadas dentro de la Provincia Fitogeográfica del Espinal. La colecta se realizó en octubre, noviembre y diciembre de 2004 y en enero, febrero y marzo de 2005, registrando las especies vegetales sobre las que se capturaron. Se colectaron 277 ejemplares en total, de los cuales se identificaron 62 especies (27 géneros en 5 familias. Las curvas de rarefacción indican una tasa de acumulación de especies mayor para la Reserva Ecológica, los índices de diversidad de Shannon son 3,25 para la Reserva Ecológica y 2,64 para la Zona Urbana. Para la comparación de las comunidades en ambos sitios, las abejas fueron clasificadas en tres categorías según la especialización en el uso del recurso floral, sustrato de nidificación y comportamiento social. Se observó una asociación entre los grupos especialistas y de nidificación en el suelo con el ambiente natural, y por otro lado, las especies generalistas y de nidificación en cavidades con el ambiente urbano. No se identificaron diferencias, en cuanto al tipo de comportamiento social de las especies, entre ambos sitios.

  6. Estudio cinético de una fermentación alcohólica utilizando miel de abejas como sustrato

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    José Ángel Gómez

    1997-01-01

    Full Text Available El artículo describe un estudio cinético de una fermentación alcohólica utilizando miel de abejas como sustrato; para este efecto se realizaron nueve fermentaciones en proceso discontinuo con un volumen, de 10 L, siguiendo el comportamiento de las concentraciones de sustrato, biomasa y producto en el tiempo. Se evaluó la conveniencia de factores como la agitación y la adición de nutrientes, además, se observa el efecto de las concentraciones iniciales de sustrato e inocula y el tipo de miel.

  7. Acute Contact Toxicity Test of Oxalic Acid on Honeybees in the Southwestern Zone of Uruguay Prueba de Toxicidad Aguda por Contacto de Ácido Oxálico en Abejas de la Zona Sudoeste de Uruguay

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    Leonidas Carrasco-Letelier

    2012-06-01

    Full Text Available This work studies the acute contact toxicity of oxalic acid (OA on a honeybee polyhybrid subspecies (Apis mellifera, which is the dominant biotype in southwestern zone of Uruguay (SWZU and the country's most important honey-producing region. We determined the mean lethal dose (LD50, as well as the no observed effect level (NOEL and the lowest observed effect level (LOEL values. We also estimated the total number of honeybees per hive in the test area. The aim was to assess the relationship between the maximum OA dose used in Uruguay (3.1 g OA per hive and the toxicological parameters of honeybees from SWZU. The current dose of 3.1 g OA per hive corresponds to 132.8 OA per honeybee since determined NOEL is 400 OA per honeybee; our results indicate that the current dose could be increased to 9.3 g OA per hive. The results also highlight some differences between the LD50 value in SWZU honeybees (548.95 OA per honeybee and some published LD50 values for other honeybee subspecies.Este trabajo estudió la toxicidad aguda por contacto del ácido oxálico (AO sobre una subespecie poli-híbrida de abejas (Apis mellifera, la cual es el biotipo dominante en la zona sudoeste de Uruguay (SWZU, la región más importante para la producción de miel en este país. Este estudio determinó la dosis letal 50 (DL50, así como el nivel de efecto no observado (NOEL, el nivel de efecto mínimo observado (LOEL, y el número total de individuos por colmena. El propósito fue evaluar la relación entre la dosis máxima de AO usada en Uruguay (3.1 g AO por colmena y los parámetros toxicológicos de las abejas de la SWZU. Los resultados mostraron que es posible elevar la dosis actual de AO por colmena a 9.3 g, ya que la dosis actual de 3.1 g de AO corresponde a 132.8 AO por abeja, y el NOEL determinado es 400 AO por abeja. Los resultados también destacaron algunas diferencias entre la DL50 de las abejas del SWZU (548.95 AO por abeja y algunos valores de DL50 publicados

  8. Efecto del cambio del paisaje en la estructura de la comunidad de abejas sin aguijón (Hymenoptera: Apidae en Meta, Colombia

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    Guiomar Nates-Parra

    2008-09-01

    Full Text Available Las abejas sin aguijón son unos de los polinizadores naturales más diversos de la fauna Apoidea en los trópicos. Nidifican en diversos sustratos y distintos ambientes, existiendo algunas especies típicas de lugares naturales o artificiales. La alteración del medio donde nidifican tiene un importante impacto sobre la composición natural de su estructura, hecho que se ve reflejado también en la densidad de nidos. Analizamos la composición de la estructura de la comunidad de abejas sin aguijón en tres paisajes del piedemonte llanero colombiano, una región importante por representar la transición entre ambientes andinos y de sabana (seriamente amenazada por la ganadería intensiva. Realizamos muestreos sistemáticos en bosque secundario, agro-ecosistema y zona urbana; registramos la presencia de 204 nidos de 11 géneros representados por 24 especies. La riqueza de abejas sin aguijón fue similar, aun cuando hubo diferencias significativas en la estructura de la comunidad en los tres paisajes. La densidad de nidos por paisaje fue heterogénea y nunca mayor de 16 nidos/Ha. Observamos dos patrones de nidificación y registramos diferente número de especies en la misma zona utilizando otro criterio de muestreo.Effect of landscape change on the structure of the sting-less bee community (Hymenoptera: Apidae in Meta, Colombia. Stingless bees represent one of the most diversified components of the natural Apoidea fauna of pollinators in the tropics. They use diverse kinds of substrates and inhabit varied habitats. Some species are typical for some natural either artificial place. The landscape alteration were this group of bees nests, has and important impact on the natural composition of its community structure, fact which is reflected in the nest density. We analyzed the structure composition of the stingless bees’ community in three environments in the Colombian llanos piedmont, an important region that represents the transition between

  9. Determinación del contenido de vitamina C en miel de abejas venezolanas por volumetría de óxido-reducción

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    Zago G, Karina I; García F, María Y; Di Bernardo, María L; Vit, Patricia; Luna, José R; Gualtieri, María

    2010-01-01

    En este trabajo se ha determinado el contenido de Vita mina C en mieles de abeja de la región andina venezolana. La Vitamina C pertenece junto con la Vitamina B al grupo de las hidrosolubles. Ayuda en el desarrollo de huesos, cartílagos, a la absorción del hierro, a la producción de colágeno (actuando como cofactor en la hidroxilación de los aminoácidos lisina y prolina). La propiedad química antioxidante es la más importante de la vitamina C; esto ayuda a prevenir la oxidación de las vitamin...

  10. DESARROLLO Y OPTIMIZACIÓN DE UNA METODOLOGÍA MULTIRESIDUO POR MÉTODO SIMPLEX PARA EL ANÁLISIS DE PLAGUICIDAS EN MIEL DE ABEJAS

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    Danny Rodriguez

    2014-07-01

    Full Text Available La aplicación de plaguicidas en cultivos cercanos a las zonas de producción apícola puede afectarla supervivencia de las abejas y la calidad de los productos derivados de la colmena, por lo cual es de gran importancia realizar estudios de residualidad de estos agroquímicos en mieles yen otros productos apícolas. Para esto es indispensable desarrollar metodologías que permitan el análisis de estos contaminantes en productos apícolas. Este trabajo muestra los resultados en el desarrollo y optimización de una metodología multiresiduo para el análisis de 30 plaguicidas, incluyendo plaguicidas organoclorados, organofosforados y piretroides en miel de abejas. El método consistió en una extracción líquido-líquido, seguida de un paso de limpieza en fase solida usando una columna cargada con silica gel/florisil. El análisis de los plaguicidas fue realizado por cromatografía de gases con detectores de nitrógeno fósforo (NPD y microcaptura electrónica (µ-ECD.La optimización de las variables experimentales presentes en los pasos de pre-tratamiento, extracción y limpieza se realizó mediante el empleo del método simplex modificado. Con este fin, se escogieron 14 variables las cuales se optimizaron en 21 experimentos. Los resultados mostraron que los porcentajes de recuperación obtenidos para la mayoría de los plaguicidas se encuentran entre el 78.8% y el 114.5%, con coeficientes de variación inferiores al 20%.

  11. Asteraceae visited by honeybees in Argentina: a record from entomopalynological studies Asteraceae visitadas por abejas melíferas en Argentina: un registro a partir de estudios entomopalinológicos

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    María C. Telleria

    2009-07-01

    Full Text Available Entomopalynological studies of Asteraceae in Argentina revealed that 64 taxa occurred in food stored by honeybees. The most visited plant tribes were classified according to both the type of reward provided by the different taxa and the intensity that such reward is collected by honeybees. Exotic plant taxa were intensely visited inside the disturbed areas (e.g. Cardueae and Cichorieae tribes, whereas native taxa (e.g. Barnadesioideae, Mutisieae, Astereae and Eupatorieae were intensely visited in less disturbed areas. A large number of identified taxa of Asteraceae and the evaluation of its importance to honeybee nutrition were presented. The present study contributes to the knowledge of relationship between Asteraceae and honeybees.A partir de estudios entomopalinológicos se encontró que 64 taxa pertenecientes a la familia Asteraceae están presentes en los alimentos almacenados por las abejas melíferas. Los representantes exóticos fueron intensamente visitados en las áreas más alteradas (e.g. Cardueae and Cichorieae, mientras que algunos representantes nativos (e.g. Barnadesioideae, Mutisieae, Astereae y Eupatorieae fueron intensamente visitados en áreas menos alteradas. Se presenta un importante número de taxa de Asteraceae relevantes para la nutrición de las abejas melíferas. El presente trabajo contribuye a conocer la relación entre Asteraceae y abejas melíferas.

  12. Frecuencia de Varroa destructor, Nosema apis y Acarapis woodi en colonias manejadas y enjambres silvestres de abejas (Apis mellifera en Mérida, Yucatán, México

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    Jesús Froylán Martínez Puc

    2011-01-01

    Full Text Available Las enfermedades y parasitosis que afectan a las abejas melíferas causan importantes pérdidas económicas a la actividad apícola. Sin embargo, los daños provocados por dichas parasitosis se presentan de manera heterogénea en colonias manejadas y en enjambres silvestres. Con la finalidad de determinar la frecuencia y niveles de infestación de V. destructor, N. apis y A. woodi en abejas melíferas en Yucatán, se colectaron un total de 76 muestras de abejas melíferas, durante junio a septiembre de 2006, siendo 27 de colonias manejadas y 49 de enjambres silvestres. La frecuencia de V. destructor en colonias manejadas fue de 62.9 %, con un nivel de infestación de 1.70 ± 0.26 (ácaros/100 abejas, y en los enjambres silvestres fue de 55.1 %, con un nivel de infestación de 1.96 ± 0.44. No se observaron diferencias en la frecuencia (X2 = 0.44, gl = 1, P =0.51, y niveles de infestación (t=0.14, P=0.89. La frecuencia de N. apis en las colonias manejadas fue de 74.0 %, con una media de infestación de 1´480 x 103 ± 232 x 103 (esporas/ abeja, y en los enjambres silvestres de 53.0 %, con una media de infestación de 1´416 x 103 ± 264 x 103, no se observaron diferencias en la frecuencia (X2 = 3.22, gl = 1, P= 0.07 y niveles de infestación (t=0.18, P=0.86. No se detectó la presencia de A. woodi en las muestras analizadas. Los resultados demuestran un aumento en la frecuencia de N. apis en Yucatán.

  13. Estudio de la actividad antifúngica de un extracto de propóleo de la abeja Apis mellifera proveniente del estado de México

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    Amparo Londoño Orozco

    2013-05-01

    Full Text Available El objetivo del presente trabajo fue evaluar la acción inhibitoria de un extracto etanólico al 15% de propóleo de la abeja Apis mellifera, procedente del apiario de la Facultad de Estudios Superiores Cuautitlán, UNAM, sobre el crecimiento de Candida albicans (ATCC 14055, Cryptococcus neoformans, y Aspergillus fumigatus, mediante dos pruebas de susceptibilidad: difusión en agar y microdilución. Se impregnaron los discos con el extracto de propóleo. Las pruebas de difusión fueron efectuadas sobre agar dextrosa Sabouraud (SDA, Müeller-Hinton con 2% de glucosa y 0,5 μg/mL de azul de metileno (MHAM: documento NCCLS M-44ª y RPMI 1640 con agar noble. Para obtener la concentración inhibitoria mínima (CIM, se realizaron pruebas de microdilución según los métodos M27-A2 (levaduras y M38-A (filamentosos del NCCLS (National Committee for Clinical Laboratory Standard: ahora Institute for Clinical Laboratory Standard. Se observó actividad inhibitoria sobre el desarrollo de todos los hongos estudiados. Estos resultados sugieren el posible potencial del propóleo como un tratamiento alternativo contra las infecciones por hongos, tanto levaduriformes como filamentosos.

  14. Producción de miel e infestación con Varroa destructor de abejas africanizadas (Apis mellifera con alto y bajo comportamiento higiénico

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    Carlos Aurelio Medina-Flores

    2014-01-01

    Full Text Available El objetivo del estudio fue comparar la producción de miel y los niveles de Varroa destructor entre colonias de abejas africanizadas (AA ( Apis mellifera con alto y bajo comportamiento higiénico (CH en el altiplano semiárido de México. Se midió el nivel de CH a 57 colonias por congelamiento de la cría con nitrógeno líquido (N 2 . Las colonias se clasificaron en dos grupos: alto CH (> 95 % y bajo CH (0.05. Estos resultados sugieren que aparentemente el comportamiento higiénico no tiene un efecto mayor en la resistencia de las AA al crecimiento poblaci onal del ácaro. También sugieren que el comportamiento higiénico alto podría contribuir a incrementar la producción de miel en épocas del año con flujo reducido de néctar.

  15. Cinética de degradación térmica de betacianinas, betaxantinas y vitamina C en una bebida a base de jugo de remolacha (Beta vulgaris L. y miel de abeja

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    William Sánchez-Chávez

    2015-01-01

    Full Text Available La cinética de degradación de la betacianinas, betaxantinas y vitamina C a 30 °C, 40 °C y 50 ºC fue evaluada en una bebida a base de betarraga y miel de abeja, utilizando los modelos cinéticos de orden cero, primer y segundo orden; así como el modelo de Arrhenius para evaluar la dependencia de la velocidad de degradación con respecto a la temperatura. Se determinó que la degradación de los tres compuestos evaluados en las tres temperaturas ensayadas siguió una cinética de primer orden con una alta correlación (R2 = 0,974; 0,98; 0,979. Se determinó que las betacianinas y la vitamina C presentan un sensibilidad similar a la temperatura; mientras que las betaxantinas fueron más estables. Con referencia a la influencia de la temperatura en la velocidad de degradación se determinaron las energías de activación y los valores Q10 de la reacción los cuales confirman la mayor estabilidad de las betaxantinas con respecto a las betacianinas y la vitamina C en la bebida de remolacha y miel de abeja.

  16. ABEJAS VISITANTES DE Aspilia tenella (KUNTH S. F. BLAKE (ASTERACEAE: COMPORTAMIENTO DE FORRAJEO Y CARGAS POLÍNICAS BEES VISITING Aspilia tenella (KUNTH S .F. BLAKE (ASTERACEAE: FORAGING BEHAVIOR AND POLLEN LOADS

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    Clara Isabel Aguilar Sierra

    2008-12-01

    Full Text Available En cuatro localidades de la zona de influencia del embalse Porce II (Antioquia, Colombia, se observó el comportamiento de 23 taxones de abejas durante sus visitas a Aspilia tenella (Kunth S. F. Blake; se registró el número de individuos y el tiempo total de visita y se midieron la temperatura y la humedad relativa. Los análisis de varianza indican que hubo una relación estadísticamente significativa en cuanto a los atributos considerados para las especies de abejas y una covariación significativa con las variables ambientales. Las pruebas de rangos múltiples muestran que Trigona nigerrima es la especie con los mayores valores promedio para el número de individuos y el tiempo de visita. En el estudio de las cargas polínicas se encontraron 30 tipos polínicos, dentro de los cuales A. tenella presentó el mayor porcentaje; Piper aduncum, Miconia minuti flora, Psidium guajava, Rapanea sp., Mimosa pudica y Psychotria sp., en su orden, son otras fuentes de polen importantes para varias de las especies de abejas. El análisis de agrupamiento para las abejas capturadas permitió diferenciar dos grupos: el primero incluye a 18 especies cuyas cargas polínicas que poseían una abundancia relativa de granos de polen de A. tenella por encima de 77%; el segundo grupo estaba conformado por cinco especies de abejas que recolectaron porcentajes mayores de otros tipos polínicos: Exomalopsis sp. 1 (90,4% de M. minuti flora; Lasioglossum sp. 1 y Coelioxys aff. mexicana (77,4% y 64,1% de P. aduncum, respectivamente; Exomalopsis sp. 2 (67,1% de P. guajava y Auglochloropsis vesta (55,5% de Rapanea sp.. Trigona fulviventris y Apis mellifera presentaron los valores más altos de riqueza de tipos polínicos en las cargas de polen; ello evidencia sus nichos tróficos amplios y su comportamiento generalista de visita.We observed the behavior of 23 species of wild bees visiting Aspilia tenella (Kunth S .F. Blake in four different localities of the Porce II dam

  17. Efectos en ratas de los alcoholes de cera de abejas (D-002 sobre la colitis ulcerativa inducida por sulfato de dextrano y etanol

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    Vivian Molina-Cuevas

    Full Text Available Objetivos. Investigar los efectos del D-002, mezcla de seis alcoholes alifáticos primarios de alto peso molecular, obtenida de la cera de abejas (Apis mellifera, sobre la colitis ulcerativa (CU inflamatoria severa inducida por sulfato de dextrano (DSS y etanol en ratas (Ratus ratus. Materiales y métodos. Las ratas se distribuyeron aleatoriamente en seis grupos: un control cero al que no se provocó daño, y cinco a los que se les indujo la CU: un control negativo (vehículo, tres tratados con D-002 (25, 100 y 400 mg/kg y un control positivo con sulfazalacina (200 mg/kg (sustancia de referencia. Se cuantificaron las manifestaciones clínicas (variación del peso corporal, presencia de diarrea y de sangrado rectal, el puntaje de daño macroscópico e histológico, y la actividad de mieoloperoxidasa (MPO. Resultados. El tratamiento oral con D-002 (25, 100 y 400 mg/kg previno significativamente la disminución del peso corporal. La dosis de 400 mg/kg redujo la presencia de diarreas y sangrado rectal, aunque su comparación con el control negativo solo alcanzó significación estadística sobre las diarreas. El D-002 (25, 100 y 400 mg/kg redujo significativamente el puntaje de las lesiones macroscópicas (40,0; 43,3 y 47,2% de inhibición, respectivamente, el puntaje de daño histológico (31,5; 53,7 y 67,1% de inhibición, respectivamente y la actividad de MPO (73,2; 83,6 y 85,0% de inhibición, respectivamente, comparado con el grupo control negativo. La sulfazalacina redujo significativamente todas las variables estudiadas. Conclusiones. El D-002 (25, 100 y 400 mg/kg protegió significativamente la mucosa colónica en ratas con CU inflamatoria severa inducida por DSS y etanol.

  18. Efectos en ratas de los alcoholes de cera de abejas (D-002 sobre la colitis ulcerativa inducida por sulfato de dextrano y etanol

    Directory of Open Access Journals (Sweden)

    Vivian Molina-Cuevas

    Full Text Available RESUMEN Objetivos. Investigar los efectos del D-002, mezcla de seis alcoholes alifáticos primarios de alto peso molecular, obtenida de la cera de abejas (Apis mellifera, sobre la colitis ulcerativa (CU inflamatoria severa inducida por sulfato de dextrano (DSS y etanol en ratas (Ratus ratus. Materiales y métodos. Las ratas se distribuyeron aleatoriamente en seis grupos: un control cero al que no se provocó daño, y cinco a los que se les indujo la CU: un control negativo (vehículo, tres tratados con D-002 (25, 100 y 400 mg/kg y un control positivo con sulfazalacina (200 mg/kg (sustancia de referencia. Se cuantificaron las manifestaciones clínicas (variación del peso corporal, presencia de diarrea y de sangrado rectal, el puntaje de daño macroscópico e histológico, y la actividad de mieoloperoxidasa (MPO. Resultados. El tratamiento oral con D-002 (25, 100 y 400 mg/kg previno significativamente la disminución del peso corporal. La dosis de 400 mg/kg redujo la presencia de diarreas y sangrado rectal, aunque su comparación con el control negativo solo alcanzó significación estadística sobre las diarreas. El D-002 (25, 100 y 400 mg/kg redujo significativamente el puntaje de las lesiones macroscópicas (40,0; 43,3 y 47,2% de inhibición, respectivamente, el puntaje de daño histológico (31,5; 53,7 y 67,1% de inhibición, respectivamente y la actividad de MPO (73,2; 83,6 y 85,0% de inhibición, respectivamente, comparado con el grupo control negativo. La sulfazalacina redujo significativamente todas las variables estudiadas. Conclusiones. El D-002 (25, 100 y 400 mg/kg protegió significativamente la mucosa colónica en ratas con CU inflamatoria severa inducida por DSS y etanol.

  19. Selectividad de pecoreo de la abeja sin aguijón Melipona beecheii Bennett en la EEPF "Indio Hatuey", Matanzas Foraging selectivity of the stingless bee Melipona beecheii Bennett at the EEPF "Indio Hatuey", Matanzas

    Directory of Open Access Journals (Sweden)

    Leydi Fonte

    2012-09-01

    Full Text Available El trabajo se realizó en la EEPF "Indio Hatuey", con el objetivo de determinar la selectividad de pecoreo de la abeja sin aguijón (Melipona beecheii Bennett, mediante el análisis palinológico de muestras de miel y polen. Previamente se realizó un inventario florístico del área, alrededor del emplazamiento del meliponario, basado en el radio de vuelo de las abejas. En las silvopasturas se utilizó el método de la escalera, y en el caso de los cercados vivos se contaron los árboles cada 10 m y se reflejaron en el croquis del área muestreada. En las arboledas y los traspatios de las viviendas se contaron y clasificaron todos los árboles existentes, y en el estrato herbáceo se aplicó el método de los pasos. En ambos tipos de muestra predominaron los granos de polen de guayaba (Psidium guajava y almácigo (Bursera simaruba, seguidos por los de dormidera (Mimosa pudica, sensitiva (Mimosa pigra, y naranjo y limonero (Citrus spp.. Se concluye que las abejas meliponas presentaron una marcada selectividad de pecoreo por las floraciones del almácigo y la guayaba, y que la Estación cuenta con el potencial melífero suficiente para que puedan desarrollarse favorablemente, sobre una base alimentaria sustentable.The work was conducted at the EEPF "Indio Hatuey" to determine the foraging selectivity of stingless bees (Melipona beecheii Bennett through the analysis of honey and pollen samples. A floristic inventory of the area had been previously made around the apiary location, taking into consideration the bees' flight radius. The stair method was used in the silvopastures, and in the case of the living fences the trees were counted every 10 meters and this was shown in the sketch of the sampled area. In the groves and yards all trees where counted and classified, and in the herbaceous stratum the step method was applied. The pollen grains of guava (Psidium guajava and mastic tree (Bursera simaruba predominated in both kinds of samples

  20. Diseño y validación de un método espectrofotométrico para el control de calidad del piroxicam jalea 0,5 % Design and validation of a spectrophotometry method used in quality control of a 0,5 % Piroxican jelly

    Directory of Open Access Journals (Sweden)

    Yania Suárez Pérez

    2009-12-01

    Full Text Available La jalea de piroxicam al 0,5 % es un nuevo producto en fase de desarrollo de la Empresa Laboratorio "Roberto Escudero Díaz". En el presente trabajo se diseñó un método por espectrofotometría UV, para lo cual se empleó ácido clorhídrico etanólico como disolvente y 328 nm como longitud de onda de máxima absorción. Se estableció un procedimiento simple y rápido para procesar la muestra previa al análisis. Posteriormente se aplicó la validación de este según exigencias regulatorias actuales. El método resultó suficientemente específico, lineal, preciso y exacto en el rango de 3,125 a 9,375 µg/mL. Se aplicó a la cuantificación del principio activo en 3 lotes de la formulación desarrollada, con resultados satisfactorios sin diferencias estadísticamente significativas según el procesamiento aplicado.The 0.5 % jelly Piroxican is a new product in developing phase from "Roberto Escudero Díaz" Laboratory Enterprise. In present paper a UV spectrophotometry method was designed using ethanol chloride acid as solvent and 328 nm as maximal absorption wave length. A simple and fast procedure was established to processing the sample previous to analysis. Subsequently, we applied the validation of it according current regulatory demands. Method was enough specific, linear, precise and exact at the 3.125 to 9.375 µg/mL. Active principle quantification was applied in three batches of developed formula achieving satisfactory results without statistically significant differences according the applied procedure.

  1. Colonia de abejas artificiales y optimización por enjambre de partículas para la estimación de parámetros de regresión no lineal

    Directory of Open Access Journals (Sweden)

    Sergio Gerardo de los Cobos Silva

    2014-04-01

    Full Text Available Este trabajo presenta la comparación de los resultados de las técnicas heurísticas de ABC colonias de abejas artificiales (Artificial Bee Colony y PSO enjambres de partículas (Particle Swarm Optimization que son utilizadas para la estimación de parámetros de modelos de regresión no lineal. Los algoritmos fueron probados sobre 27 bases de datos de la colección NIST(2001, de las cuales 8 son consideradas con un alto grado de dificultad, 11 con un grado de dificultad medio y 8 con un grado de dificultad bajo. Se presentan los resultados experimentales.

  2. Cinética de degradación térmica de betacianinas, betaxantinas y vitamina C en una bebida a base de jugo de remolacha (Beta vulgaris L.) y miel de abeja

    OpenAIRE

    William Sánchez-Chávez; Juán Cortez-Arredondo; Miguel Solano-Cornejo; Julio Vidaurre-Ruiz

    2015-01-01

    La cinética de degradación de la betacianinas, betaxantinas y vitamina C a 30 °C, 40 °C y 50 ºC fue evaluada en una bebida a base de betarraga y miel de abeja, utilizando los modelos cinéticos de orden cero, primer y segundo orden; así como el modelo de Arrhenius para evaluar la dependencia de la velocidad de degradación con respecto a la temperatura. Se determinó que la degradación de los tres compuestos evaluados en las tres temperaturas ensayadas siguió una cinética de primer orden con una...

  3. Evaluation of Yield Component Traits of Honeybee-Pollinated (Apis mellifera L.Rapeseed Canola (Brassica napus L. Evaluación de Parámetros de Rendimiento del Raps (Brassica napus L. Polinizado por Abejas (Apis mellifera L.

    Directory of Open Access Journals (Sweden)

    Ximena Araneda Durán

    2010-06-01

    Full Text Available Recent introduction of hybrid varieties raises the question if bees (Apis mellifera L. contribute as pollinator agents in developing the full yield potential of rapeseed (Brassica napus L.. In order to evaluate the yield achieved by B. napus cv. Artus pollinated by A. mellifera testing was carried out in the district of Freire, La Araucanía Region, Chile. This consisted in isolating or excluding rapeseed plants from pollinators with exclusion cages. Treatments applied were total exclusion (T1, partial exclusion (T2 and free pollination (T0 with a density of 6.5 hives ha-1, in order to determine the following yield components traits: grains per silique, siliques per plant, 1000 grain weight and yield. The experimental design used was randomized complete blocks with three treatments and three replicates. Results obtained show that the parameter least affected by bee intervention was the grains per silique variable. In contrast, siliques per plant and 1000 grain weight parameters presented significant differences, contributing to a yield greater than 5 t ha-1; which represented a figure 50.34% higher than in the treatment without bees. It may be concluded that the inclusion of bees in crops is fully justified as a production tool.La reciente introducción de variedades híbridas plantea la interrogante de la contribución que pueda tener la presencia de abejas (Apis mellifera L. como agentes polinizadores para desarrollar en pleno el potencial productivo del raps (Brassica napus L.. Con el objetivo de evaluar el rendimiento alcanzado por B. napus cv. Artus polinizado por A. mellifera, se realizó un ensayo en la localidad de Freire, Región de La Araucanía, Chile. Éste consistió en aislar o excluir las plantas de raps de los polinizadores mediante el uso de jaulas excluidoras. Los tratamientos consistieron en la exclusión total (T1, exclusión parcial (T2 y libre polinización (T0 con una densidad de 6,5 colmenas ha-1, con el fin de determinar

  4. Variación de la comunidad de abejas de las orquídeas (Hymenoptera: Apidae en tres ambientes perturbados del piedemonte llanero colombiano

    Directory of Open Access Journals (Sweden)

    Alejandro Parra-H

    2007-12-01

    Full Text Available Las abejas de las orquídeas subsisten en vastas áreas de bosque tropicales gracias a que mantienen estrechas relaciones con tipos de vegetación particular en diversos micro-hábitats. Con base en este tipo de relaciones con el medio y características biológicas como preferencia por ciertos tipos de néctares y de polen, y diversidad morfológica y etológica de la tribu, es posible evaluar la calidad de un hábitat según la distribución de euglosinos. Este trabajo propone el uso de esta información, además de índices de diversidad para la evaluación de la calidad del medio. Entre marzo y diciembre de 2003 muestreamos tres tipos de paisaje (Urbano, Rural y Conservado en el piedemonte llanero colombiano, usando redes entomológicas y sustancias aromáticas (Cineol y Metil Salicilato. Para las 15 localidades muestreadas se registraron 17 de las 26 especies conocidas para el área. Eulaema nigrita fue la más frecuente mientras que Euglossa magnipes, E. cybelia, E. heterosticta, E. singularis, Eulaema bombiformis, E. speciosa y Exaerete frontalis correspondieron a ambientes considerados de aceptable a buena calidad. La composición y cercanía de fragmentos de bosque son factores favorables. La diversidad relativa (máxima variación de formas y tamaños dentro de la tribu, sería proporcional a la calidad del medio.Variation of the orchid bees community (Hymenoptera: Apidae in three altered habitats of the Colombian "llano" piedmont. Orchid bees subsist in vast tropical forest areas because they maintain close relationships with particular plant species in diverse micro-habitats. Based on the relationships among the environment and biological features (food preference, morphologic and ethologic diversity, it is possible to determine habitat quality using the euglossine array. This work proposes the use of this ecological information, in addition to diversity indices, for the evaluation of environmental quality. Fifteen localities in

  5. Curación de heridas sépticas con miel de abejas Use of honey to cure of septic wounds

    Directory of Open Access Journals (Sweden)

    Iván lavandera Rodríguez

    2011-06-01

    Full Text Available INTRODUCCIÓN. Variadas investigaciones reconocen a la miel ventajas sobre fármacos de origen químico. Este trabajo persiguió como objetivo fundamental determinar la acción de la miel en el tratamiento de heridas sépticas. MÉTODOS. Se realizó un estudio descriptivo, observacional y comparativo sobre los efectos cicatrizantes de la miel, con un universo de 200 pacientes con heridas sépticas, que fueron atendidos en el Hospital «Freyre Andrade» y la Clínica Central «Cira García» entre los años 2000 y 2010. Se dividió aleatoriamente a los pacientes en dos grupos de 100 pacientes cada uno: un grupo control, a cuyos integrantes se les hizo una cura local diaria con solución salina al 0,9 %, antisépticos y antibióticos locales; y un grupo de estudio, curado también localmente con solución salina al 0,9 % pero con posterior aplicación de miel de abejas, en una capa que ocupó la herida en toda su profundidad y superficie. RESULTADOS. La mayoría de los cultivos realizados el primer día antes de curar la herida en el grupo control (98 continuaron siendo positivos (82 en el segundo cultivo (cuarto día, mientras que en el grupo de estudio solo fueron positivos 35 de los 95 cultivos realizados. En este grupo la fetidez y el tejido desvitalizado desaparecieron en las primeras 24 h de tratamiento, mientras que en el grupo control la situación se prolongó hasta el quinto y sexto días de tratamiento. El tejido de granulación útil apareció al segundo día en el grupo de estudio y en el octavo en el grupo control. En este último se documentaron 19 complicaciones asociadas al método de curación; no ocurrió así en el grupo de estudio, donde no hubo complicaciones ni reacciones adversas a la miel. CONCLUSIONES. La miel se puede utilizar para curar cualquier herida séptica, independientemente de su localización. Tiene fuertes propiedades desodorizantes, de limpieza y favorece la cicatrización de las heridas. En este estudio no

  6. INCIDENCIA Y NIVEL DE INFESTACIÓN POR VARROASIS EN ABEJAS (Apis mellifera EN EL LABORATORIO DE IDENTIFICACIÓN Y DIAGNÓSTICO APÍCOLA DE 2002 A 2006

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    Agustín Ruíz-Flores

    2012-01-01

    Full Text Available El objetivo fue estudiar las tendencias anuales y mensuales para el número de muestras positivas (NMP y el nivel de infestación (NI por Varroa destructor en abejas (Apis mellifera. El estudio se realizó de 2002 a 2006 en el Laboratorio de Identificación y Diagnóstico Apícola de la SAGARPA. La detección del ácaro se realizó con la técnica de De Jong para V. destructor. Los estimadores de las tendencias anuales y mensuales para NMP y NI se obtuvieron mediante regresión. El promedio mensual para NMP fue 47.6 ± 49.3 (0 a 248 muestras. La tendencia anual para el incremento del NMP fue -5.69 ± 4.48 (P = 0.2087. La tendencia mensual de enero a diciembre fue 0.91 ± 1.7 (P = 0.6024. El NI promedio fue 3.27 ± 2.6 %, el promedio mensual varió de 0 a 10.06 %. La tasa media de incremento anual en el NI fue 0.34 ± 0.23 % (P = 0.2494. La tasa media de incremento mensual de enero a diciembre fue -0.17 ± 0.1 % (P = 0.1194. Los NMP con V. destructor y los NI, no mostraron incrementos significativos para el periodo estudiado. No se detectó el efecto de la estacionalidad sobre el NMP y NI.

  7. Desarrollo de una herramienta para evaluar los programas prerrequisitos del Sistema (HACCP, instaurado en la planta de beneficio de miel de abejas de la UEB Apícola de Sancti Spíritus.

    Directory of Open Access Journals (Sweden)

    Yorexis Guilarte Navarro

    2012-04-01

    Full Text Available Los alimentos están expuestos a agentes físicos, químicos o biológicos, causando un efecto adverso para la salud. Un estudio poblacional arrojó que el mayor % de los casos diarreicos tuvo relación con la ingestión de alimentos, lo que evidencia, que estos tienen importantes cargas bacterianas desde su origen. En el caso de la miel de abeja, los principales peligros están dados por contaminación de envases, por presencia de antibióticos y por fermentación. Como solución, se desarrolló y validó un instrumento que se sustenta en la Gestión de la Higiene y la Calidad, aplicable al diagnóstico de los 7 planes previos de higiene y trazabilidad, necesario para implantar un sistema Hazard Analysis Critical Control Point (HACCP en cualquier empresa del sector agroalimentario, capaz de, medir los programas prerrequisitos del sistema descrito. Sometido a validación de contenido por Delphy, la herramienta final obtuvo, la aprobación de los expertos, que otorgan alta confiabilidad a valores obtenidos por encima del 90% de cumplimiento. La herramienta permitió organizar y evaluar los prerrequisitos del Sistema HACCP, además de evaluar los resultados de su implantación, en el beneficio de la miel. La validación del Sistema HACCP, arroja resultados satisfactorios, reflejándose en la obtención de un producto inocuo.

  8. Efectos del extracto de alcoholes purificados de la cera de abejas (Apis mellifera en dos modelos de analgesia Effect of purified alcohols extract from the bee wax (Apis mellifera in two analgesia models

    Directory of Open Access Journals (Sweden)

    Lilia Fernández Dorta

    2010-06-01

    Full Text Available El D-002 es una mezcla de 6 alcoholes alifáticos de alto peso molecular purificada de la cera de abejas (Apis mellifera. Este estudio tuvo como objetivo investigar los efectos del tratamiento por vía oral con D-002 sobre las contorsiones abdominales inducidas por ácido acético y en el modelo del plato caliente en ratones. Los animales se distribuyeron aleatoriamente en 5 grupos (10-20 animales/grupo: uno control que recibió el vehículo goma acacia/H2O, tres tratados con D-002 (25, 125 y 250 mg/kg y uno con aspirina (modelo de contorsiones abdominales o morfina (plato caliente. El D-002 (25-250 mg/kg inhibió significativamente las contorsiones inducidas por ácido acético en un 44,5; 44,8 y 47,1 % respectivamente; sin embargo, no modificó la latencia de la respuesta en el modelo del plato caliente. Estos resultados muestran que el tratamiento por vía oral con D-002 (25-250 mg/kg es capaz de inhibir de forma moderada las contorsiones abdominales por ácido acético sin afectar la respuesta al plato caliente. Esto sugiere que el D-002 ejerce una acción analgésica periférica pero no a nivel central.The D-002 is a mixture of 6 high molecular weight aliphatic acids purified from bee wax (Apis mellifera. The aim of present study was to research the effects of an oral treatment using D-002 on the acetic acid- induced abdominal writhings and in the hot plate model in mice. Animals were randomized distributed to 5 groups (10-20 animals/group: a control one received the Gum Arabic vehicle/H(20, three received D-002 (25, 125 and 250 mg/kg, and another received aspirin (abdominal contortions model or morphine (hot plate. The D-002 inhibited the above mentioned writhings in a 44., 44,8 and 47. , respectively; however, not modified the response latency in the hot plate model. These results demonstrate that the D-002 (25-250 mg/kg oral treatment may to inhibit in a moderate way the above mentioned writhings without to affect the response to hot

  9. Real Language Meets Real Business

    Science.gov (United States)

    Muirhead, Muirhead; Schechter, Sarah

    2016-01-01

    The Real Business Language Challenge was a collaborative pilot project between Coca-Cola Enterprises (CCE) and Routes into Languages East for Year 9 and 10 pupils. It was based on CCE's award-winning Real Business Challenge, part of its highly acclaimed education programme. The Real Business Language Challenge transformed the project into a…

  10. Real Forestry for Real Estate

    Science.gov (United States)

    Gagnon, Jennifer; Fisher, Jason

    2013-01-01

    Virginia is poised to see an unprecedented change in forest land ownership. To provide new landowners with information on sustainable forest management, we developed a two-part program, Real Forestry for Real Estate. First, we assembled New Landowner Packets, which contain a variety of sustainable forest management resources. Second, two…

  11. Real analysis

    CERN Document Server

    McShane, Edward James

    2013-01-01

    This text surveys practical elements of real function theory, general topology, and functional analysis. Discusses the maximality principle, the notion of convergence, the Lebesgue-Stieltjes integral, function spaces and harmonic analysis. Includes exercises. 1959 edition.

  12. Getting real with real options

    OpenAIRE

    M. R Grasselli

    2006-01-01

    We apply a utility-based method to obtain the value of a finite-time investment opportunity when the underlying real asset is not perfectly correlated to a traded financial asset. Using a discrete-time algorithm to calculate the indifference price for this type of real option, we present numerical examples for the corresponding investment thresholds, in particular highlighting their dependence with respect to correlation and risk aversion.

  13. Diversidad y aspectos biológicos de abejas silvestres de un ambiente urbano y otro natural de la región central de Santa Fe, Argentina Diversity and biological aspects of wild bees in an urban and a natural environment in the central region of Santa Fe, Argentina

    Directory of Open Access Journals (Sweden)

    Milagros Dalmazzo

    2010-06-01

    Full Text Available El objetivo del presente trabajo fue relevar el elenco de abejas silvestres en la región central de Santa Fe y comparar la diversidad de especies y aspectos biológicos en dos ambientes de una misma región. Las abejas fueron colectadas en el estrato herbáceo de la Reserva Universitaria "Escuela Granja" de la localidad Esperanza, y en la zona urbana de la localidad Susana, ambas ubicadas dentro de la Provincia Fitogeográfica del Espinal. La colecta se realizó en octubre, noviembre y diciembre de 2004 y en enero, febrero y marzo de 2005, registrando las especies vegetales sobre las que se capturaron. Se colectaron 277 ejemplares en total, de los cuales se identificaron 62 especies (27 géneros en 5 familias. Las curvas de rarefacción indican una tasa de acumulación de especies mayor para la Reserva Ecológica, los índices de diversidad de Shannon son 3,25 para la Reserva Ecológica y 2,64 para la Zona Urbana. Para la comparación de las comunidades en ambos sitios, las abejas fueron clasificadas en tres categorías según la especialización en el uso del recurso floral, sustrato de nidificación y comportamiento social. Se observó una asociación entre los grupos especialistas y de nidificación en el suelo con el ambiente natural, y por otro lado, las especies generalistas y de nidificación en cavidades con el ambiente urbano. No se identificaron diferencias, en cuanto a la sociabilidad de las especies, entre ambos sitios.The purpose of this contribution is to present a survey of wild bees in the central region of Santa Fe, and to compare the diversity and biological aspects of the bee communities at two different environments of the same region. Bees were surveyed at the ecological reserve Reserva Universitaria "Escuela Granja" in the locality of Esperanza, and at an urban area in the locality of Susana, both in the Espinal Phytogeographic Province. Bees were sampled from October to December 2004 and from January to March 2005

  14. Real analysis

    CERN Document Server

    Loeb, Peter A

    2016-01-01

    This textbook is designed for a year-long course in real analysis taken by beginning graduate and advanced undergraduate students in mathematics and other areas such as statistics, engineering, and economics. Written by one of the leading scholars in the field, it elegantly explores the core concepts in real analysis and introduces new, accessible methods for both students and instructors. The first half of the book develops both Lebesgue measure and, with essentially no additional work for the student, general Borel measures for the real line. Notation indicates when a result holds only for Lebesgue measure. Differentiation and absolute continuity are presented using a local maximal function, resulting in an exposition that is both simpler and more general than the traditional approach. The second half deals with general measures and functional analysis, including Hilbert spaces, Fourier series, and the Riesz representation theorem for positive linear functionals on continuous functions with compact support....

  15. Real Heroes.

    Science.gov (United States)

    Denenberg, Dennis

    2001-01-01

    Presents stories taken from the book, "50 American Heroes Every Kid Should Meet," explaining that children need to learn about the value of real-life human accomplishments (versus those of athletes, television personalities, and rock stars). The heroes include Elizabeth Blackwell, first American woman doctor; George C. Marshall,…

  16. Real analysis

    CERN Document Server

    DiBenedetto, Emmanuele

    2016-01-01

    The second edition of this classic textbook presents a rigorous and self-contained introduction to real analysis with the goal of providing a solid foundation for future coursework and research in applied mathematics. Written in a clear and concise style, it covers all of the necessary subjects as well as those often absent from standard introductory texts. Each chapter features a “Problems and Complements” section that includes additional material that briefly expands on certain topics within the chapter and numerous exercises for practicing the key concepts. The first eight chapters explore all of the basic topics for training in real analysis, beginning with a review of countable sets before moving on to detailed discussions of measure theory, Lebesgue integration, Banach spaces, functional analysis, and weakly differentiable functions. More topical applications are discussed in the remaining chapters, such as maximal functions, functions of bounded mean oscillation, rearrangements, potential theory, a...

  17. Efecto de la cantidad de cría de abeja Apis mellifera (Apidae sobre la eficacia del Oxavar® para el control del ácaro Varroa destructor (Varroidae Effect of Apis mellifera (Apidae honeybee brood amount on Oxavar® acaricide efficacy against the mite Varroa destructor (Varroidae

    Directory of Open Access Journals (Sweden)

    Jorge Marcangeli

    2004-12-01

    Full Text Available El objetivo del presente trabajo fue evaluar la eficacia acaricida del Oxavar® en el control del ácaro ectoparásito Varroa destructor (Anderson & Trueman. El trabajo fue realizado en el apiario experimental del Centro de Extensión Apícola ubicado en Coronel Vidal, provincia de Buenos Aires. Se seleccionaron diez colmenas tipo Langstroth que fueron divididas en dos grupos: a cinco colmenas con tres cuadros cubiertos completamente de cría en desarrollo y b cinco colmenas con seis cuadros cubiertos por cría. Ambos grupos recibieron cinco ml of Oxavar® (Apilab, Argentina; 64,6 g/l de ácido oxálico en agua destilada por cuadro cubierto por abejas adultas en tres dosis a intervalos de siete días. Semanalmente, se colectaron los ácaros muertos de los pisos especiales provistos a las colmenas de estudio con el objeto de evitar su remoción por parte de las abejas. Una vez concluido el tratamiento, en cada colmena se introdujeron dos tiras plásticas de Apistan® (Roteh, Argentina para eliminar los ácaros remanentes y poder así calcular la eficacia acaricida del Oxavar®. Los resultados mostraron que la eficacia del Oxavar® en el primer grupo (85,6% ± 1,4 resultó significativamente superior a la registrada en el segundo grupo (75,7 ± 1,7. Estas diferencias fueron testeadas a partir del número total de ácaros eliminados por el Oxavar® y Apistan® en ambos grupos de colmenas (pThe aim of this work was to evaluate the effect of honeybee brood on acaricide efficacy of Oxavar® to control the ectoparasitic mite Varroa destructor (Anderson & Trueman. Work was done at Centro de Extensión Apícola experimental apiary located at Coronel Vidal, province of Buenos Aires. Ten Langstroth hives were selected and divided in two groups: a hives containing three honeybee combs full of brood and b hives containing six honeybee brood combs. Both groups received five ml of Oxavar® (Laboratorio Apilab, Argentina; 64.6 g/l oxalic acid in destilled water

  18. Real-time systems

    OpenAIRE

    Badr, Salah M.; Bruztman, Donald P.; Nelson, Michael L.; Byrnes, Ronald Benton

    1992-01-01

    This paper presents an introduction to the basic issues involved in real-time systems. Both real-time operating sys and real-time programming languages are explored. Concurrent programming and process synchronization and communication are also discussed. The real-time requirements of the Naval Postgraduate School Autonomous Under Vehicle (AUV) are then examined. Autonomous underwater vehicle (AUV), hard real-time system, real-time operating system, real-time programming language, real-time sy...

  19. The Real World.

    Science.gov (United States)

    Tanner, John Sears

    1981-01-01

    Relates personal experiences about what constitutes the "real world." Shows how experiences from philosophy, history, literature, art, and the movies add meaning to "reality." Stresses a compromise of imagination and sensation to make the real world palatable. (RL)

  20. Real Time Revisited

    Science.gov (United States)

    Allen, Phillip G.

    1985-12-01

    The call for abolishing photo reconnaissance in favor of real time is once more being heard. Ten years ago the same cries were being heard with the introduction of the Charge Coupled Device (CCD). The real time system problems that existed then and stopped real time proliferation have not been solved. The lack of an organized program by either DoD or industry has hampered any efforts to solve the problems, and as such, very little has happened in real time in the last ten years. Real time is not a replacement for photo, just as photo is not a replacement for infra-red or radar. Operational real time sensors can be designed only after their role has been defined and improvements made to the weak links in the system. Plodding ahead on a real time reconnaissance suite without benefit of evaluation of utility will allow this same paper to be used ten years from now.

  1. Real analysis and applications

    CERN Document Server

    Botelho, Fabio Silva

    2018-01-01

    This textbook introduces readers to real analysis in one and n dimensions. It is divided into two parts: Part I explores real analysis in one variable, starting with key concepts such as the construction of the real number system, metric spaces, and real sequences and series. In turn, Part II addresses the multi-variable aspects of real analysis. Further, the book presents detailed, rigorous proofs of the implicit theorem for the vectorial case by applying the Banach fixed-point theorem and the differential forms concept to surfaces in Rn. It also provides a brief introduction to Riemannian geometry. With its rigorous, elegant proofs, this self-contained work is easy to read, making it suitable for undergraduate and beginning graduate students seeking a deeper understanding of real analysis and applications, and for all those looking for a well-founded, detailed approach to real analysis.

  2. Removal new alternative to chemical and mechanical removal for the study of pollen carried on the wild bee scopae Remoción química como nueva alternativa a la remoción mecánica para el estudio del polen transportado en las escopas de abejas silvestres

    Directory of Open Access Journals (Sweden)

    Marta Caccavari

    2010-12-01

    Full Text Available Taxonomic recognition and quantification of the different pollen types collected by bees offer the most direct method to study the diet. To determine the importance of each plant taxon, it is necessary to separate the pollen deposited only in the collecting structures in order to minimize contamination of grains collected passively in other parts of the body. The technique currently applied is based on the mechanical removal of the pollen loads with dissecting needles and repeated washings with ethanol. Metathoracic scopae that underwent this procedure showed traces of pollen in varying amounts when observed under the microscope. As an alternative to this technique chemical removal using HOK is proposed. The leg is removed and treated separatedly to avoid contamination. The deflocculant properties of HOK successfully allowed to separate the pollen adhered to the scopae, which can be then returned to the individual, unaffected by the procedure. Suspend the pollen in a know quantity of mounting fluid permit take the subsamples and determine the total number of pollen grains of each taxon. In this paper, the new technique is presented and its effectiveness is compared to the technique currenty used.El reconocimiento taxonómico y la cuantificación de los distintos tipos polínicos colectados por las abejas ofrecen el método más directo para estudiar la dieta. Para determinar la importancia de cada taxón vegetal y minimizar la contaminación, es necesario separar el polen depositado en las estructuras de colecta, de los granos recolectados en forma pasiva en otras partes del cuerpo. La técnica que se aplica hasta el momento se basa en la remoción mecánica de las cargas polínicas con agujas de disección y sucesivos lavados con etanol. Escopas de patas metatoráxicas sometidas a este procedimiento al ser observadas bajo lupa presentaban aún granos de polen en cantidades variables. Como una alternativa a esta técnica proponemos la remoci

  3. Implicit Real Vector Automata

    Directory of Open Access Journals (Sweden)

    Jean-François Degbomont

    2010-10-01

    Full Text Available This paper addresses the symbolic representation of non-convex real polyhedra, i.e., sets of real vectors satisfying arbitrary Boolean combinations of linear constraints. We develop an original data structure for representing such sets, based on an implicit and concise encoding of a known structure, the Real Vector Automaton. The resulting formalism provides a canonical representation of polyhedra, is closed under Boolean operators, and admits an efficient decision procedure for testing the membership of a vector.

  4. Real exchange rate misalignments

    OpenAIRE

    Terra, Maria Cristina T.; Valladares, Frederico Estrella Carneiro

    2003-01-01

    This paper characterizes episodes of real appreciations and depreciations for a sample of 85 countries, approximately from 1960 to 1998. First, the equilibrium real exchange rate series are constructed for each country using Goldfajn and Valdes (1999) methodology (cointegration with fundamentals). Then, departures from equilibrium real exchange rate (misalignments) are obtained, and a Markov Switching Model is used to characterize the misalignments series as stochastic autor...

  5. Elements of real analysis

    CERN Document Server

    Sprecher, David A

    2010-01-01

    This classic text in introductory analysis delineates and explores the intermediate steps between the basics of calculus and the ultimate stage of mathematics: abstraction and generalization.Since many abstractions and generalizations originate with the real line, the author has made it the unifying theme of the text, constructing the real number system from the point of view of a Cauchy sequence (a step which Dr. Sprecher feels is essential to learn what the real number system is).The material covered in Elements of Real Analysis should be accessible to those who have completed a course in

  6. From real life to real life

    DEFF Research Database (Denmark)

    Svalgaard, Lotte

    2017-01-01

    In Action Learning programmes, it is held central to work on real business challenges (task) while learning about team and self (process); staying mindful aware of the process is referred to in this paper as ‘double awareness’, and emphasises noticing and acting on process cues while working on t...

  7. Inseminación artificial de abejas reinas

    OpenAIRE

    Flores Serrano, J.M.; Padilla-Alvarez, F.; Ruiz, J.A.; Ruz, J.M.; Puerta Puerta, F.; Bustos Ruiz, M.; Campano Cabanes, Francisco

    1998-01-01

    The race commonly used by spanish beekeepers is Apis mellifera iberica. Up to date, any selection process has been carried out with this race, and a lot of characteristics in the colony can be improved. Artificial insemination is a technique used in order to control genetic origin, and open a way to control those tasks usefull for beekeepers, both productive (honey, pollen or royal jelly production...) o linked with behaviour (agresiveless, short tendency to swarming, natural resistance to di...

  8. Analytic real algebras.

    Science.gov (United States)

    Seo, Young Joo; Kim, Young Hee

    2016-01-01

    In this paper we construct some real algebras by using elementary functions, and discuss some relations between several axioms and its related conditions for such functions. We obtain some conditions for real-valued functions to be a (edge) d -algebra.

  9. Real Time Systems

    DEFF Research Database (Denmark)

    Christensen, Knud Smed

    2000-01-01

    Describes fundamentals of parallel programming and a kernel for that. Describes methods for modelling and checking parallel problems. Real time problems.......Describes fundamentals of parallel programming and a kernel for that. Describes methods for modelling and checking parallel problems. Real time problems....

  10. Real space process algebra

    NARCIS (Netherlands)

    Bergstra, J.A.; Baeten, J.C.M.

    1993-01-01

    The real time process algebra of Baeten and Bergstra [Formal Aspects of Computing, 3, 142-188 (1991)] is extended to real space by requiring the presence of spatial coordinates for each atomic action, in addition to the required temporal attribute. It is found that asynchronous communication

  11. Basic real analysis

    CERN Document Server

    Sohrab, Houshang H

    2014-01-01

    This expanded second edition presents the fundamentals and touchstone results of real analysis in full rigor, but in a style that requires little prior familiarity with proofs or mathematical language. The text is a comprehensive and largely self-contained introduction to the theory of real-valued functions of a real variable. The chapters on Lebesgue measure and integral have been rewritten entirely and greatly improved. They now contain Lebesgue’s differentiation theorem as well as his versions of the Fundamental Theorem(s) of Calculus. With expanded chapters, additional problems, and an expansive solutions manual, Basic Real Analysis, Second Edition, is ideal for senior undergraduates and first-year graduate students, both as a classroom text and a self-study guide. Reviews of first edition: The book is a clear and well-structured introduction to real analysis aimed at senior undergraduate and beginning graduate students. The prerequisites are few, but a certain mathematical sophistication is required. ....

  12. Real-time shadows

    CERN Document Server

    Eisemann, Elmar; Assarsson, Ulf; Wimmer, Michael

    2011-01-01

    Important elements of games, movies, and other computer-generated content, shadows are crucial for enhancing realism and providing important visual cues. In recent years, there have been notable improvements in visual quality and speed, making high-quality realistic real-time shadows a reachable goal. Real-Time Shadows is a comprehensive guide to the theory and practice of real-time shadow techniques. It covers a large variety of different effects, including hard, soft, volumetric, and semi-transparent shadows.The book explains the basics as well as many advanced aspects related to the domain

  13. Introduction to real analysis

    CERN Document Server

    Schramm, Michael J

    2008-01-01

    This text forms a bridge between courses in calculus and real analysis. It focuses on the construction of mathematical proofs as well as their final content. Suitable for upper-level undergraduates and graduate students of real analysis, it also provides a vital reference book for advanced courses in mathematics.The four-part treatment begins with an introduction to basic logical structures and techniques of proof, including discussions of the cardinality concept and the algebraic and order structures of the real and rational number systems. Part Two presents in-depth examinations of the compl

  14. Real Property Tax Rates

    Data.gov (United States)

    Montgomery County of Maryland — The Levy Year 2012 real property tax rate dataset reflects all the rates per $100 set each year by the County Council. These rates are applied to the assessed value...

  15. Real Property Tax - 2017

    Data.gov (United States)

    Montgomery County of Maryland — This data represents all of the County’s residential real estate properties and all of the associated tax charges and credits with that property processed at the...

  16. Real Property Tax - 2016

    Data.gov (United States)

    Montgomery County of Maryland — This data represents all of the County’s residential real estate properties and all of the associated tax charges and credits with that property processed at the...

  17. Real time expert systems

    International Nuclear Information System (INIS)

    Asami, Tohru; Hashimoto, Kazuo; Yamamoto, Seiichi

    1992-01-01

    Recently, aiming at the application to the plant control for nuclear reactors and traffic and communication control, the research and the practical use of the expert system suitable to real time processing have become conspicuous. In this report, the condition for the required function to control the object that dynamically changes within a limited time is presented, and the technical difference between the real time expert system developed so as to satisfy it and the expert system of conventional type is explained with the actual examples and from theoretical aspect. The expert system of conventional type has the technical base in the problem-solving equipment originating in STRIPS. The real time expert system is applied to the fields accompanied by surveillance and control, to which conventional expert system is hard to be applied. The requirement for the real time expert system, the example of the real time expert system, and as the techniques of realizing real time processing, the realization of interruption processing, dispersion processing, and the mechanism of maintaining the consistency of knowledge are explained. (K.I.)

  18. Outsourcing by Real Estate investors: chances for real estate managers?

    NARCIS (Netherlands)

    Janssen, I.I.; Smits, M.

    2008-01-01

    In the Netherlands outsourcing real estate management by institutional investors is not generally accepted. Since real estate investment became common use by institutional investors about 1960, investors started their own real estate management departments. Only property management regarding daily

  19. Real-time radiography

    International Nuclear Information System (INIS)

    Bossi, R.H.; Oien, C.T.

    1981-01-01

    Real-time radiography is used for imaging both dynamic events and static objects. Fluorescent screens play an important role in converting radiation to light, which is then observed directly or intensified and detected. The radiographic parameters for real-time radiography are similar to conventional film radiography with special emphasis on statistics and magnification. Direct-viewing fluoroscopy uses the human eye as a detector of fluorescent screen light or the light from an intensifier. Remote-viewing systems replace the human observer with a television camera. The remote-viewing systems have many advantages over the direct-viewing conditions such as safety, image enhancement, and the capability to produce permanent records. This report reviews real-time imaging system parameters and components

  20. Real mathematical analysis

    CERN Document Server

    Pugh, Charles C

    2015-01-01

    Based on an honors course taught by the author at UC Berkeley, this introduction to undergraduate real analysis gives a different emphasis by stressing the importance of pictures and hard problems. Topics include: a natural construction of the real numbers, four-dimensional visualization, basic point-set topology, function spaces, multivariable calculus via differential forms (leading to a simple proof of the Brouwer Fixed Point Theorem), and a pictorial treatment of Lebesgue theory. Over 150 detailed illustrations elucidate abstract concepts and salient points in proofs. The exposition is informal and relaxed, with many helpful asides, examples, some jokes, and occasional comments from mathematicians, such as Littlewood, Dieudonné, and Osserman. This book thus succeeds in being more comprehensive, more comprehensible, and more enjoyable, than standard introductions to analysis. New to the second edition of Real Mathematical Analysis is a presentation of Lebesgue integration done almost entirely using the un...

  1. Modern real analysis

    CERN Document Server

    Ziemer, William P

    2017-01-01

    This first year graduate text is a comprehensive resource in real analysis based on a modern treatment of measure and integration. Presented in a definitive and self-contained manner, it features a natural progression of concepts from simple to difficult. Several innovative topics are featured, including differentiation of measures, elements of Functional Analysis, the Riesz Representation Theorem, Schwartz distributions, the area formula, Sobolev functions and applications to harmonic functions. Together, the selection of topics forms a sound foundation in real analysis that is particularly suited to students going on to further study in partial differential equations. This second edition of Modern Real Analysis contains many substantial improvements, including the addition of problems for practicing techniques, and an entirely new section devoted to the relationship between Lebesgue and improper integrals. Aimed at graduate students with an understanding of advanced calculus, the text will also appeal to mo...

  2. Making fictions sound real

    DEFF Research Database (Denmark)

    Langkjær, Birger

    2010-01-01

    This article examines the role that sound plays in making fictions perceptually real to film audiences, whether these fictions are realist or non-realist in content and narrative form. I will argue that some aspects of film sound practices and the kind of experiences they trigger are related...... to basic rules of human perception, whereas others are more properly explained in relation to how aesthetic devices, including sound, are used to characterise the fiction and thereby make it perceptually real to its audience. Finally, I will argue that not all genres can be defined by a simple taxonomy...... of sounds. Apart from an account of the kinds of sounds that typically appear in a specific genre, a genre analysis of sound may also benefit from a functionalist approach that focuses on how sounds can make both realist and non-realist aspects of genres sound real to audiences....

  3. Essential real analysis

    CERN Document Server

    Field, Michael

    2017-01-01

    This book provides a rigorous introduction to the techniques and results of real analysis, metric spaces and multivariate differentiation, suitable for undergraduate courses. Starting from the very foundations of analysis, it offers a complete first course in real analysis, including topics rarely found in such detail in an undergraduate textbook such as the construction of non-analytic smooth functions, applications of the Euler-Maclaurin formula to estimates, and fractal geometry.  Drawing on the author’s extensive teaching and research experience, the exposition is guided by carefully chosen examples and counter-examples, with the emphasis placed on the key ideas underlying the theory. Much of the content is informed by its applicability: Fourier analysis is developed to the point where it can be rigorously applied to partial differential equations or computation, and the theory of metric spaces includes applications to ordinary differential equations and fractals. Essential Real Analysis will appeal t...

  4. Castillo del Real. Olocau

    OpenAIRE

    AUÑÓN VALLEJO, JONATAN

    2012-01-01

    El objetivo que se quiere alcanzar con este proyecto es el de realizar un estudio lo más cercano posible del Catillo del Real, de manera que se pueda conocer su origen, su evolución a lo largo de la historia, así como las diferentes técnicas y sistemas constructivos utilizados en su construcción. Auñón Vallejo, J. (2011). Castillo del Real. Olocau. http://hdl.handle.net/10251/14244. Archivo delegado

  5. Real-world outcomes

    DEFF Research Database (Denmark)

    Holmgreen, Lise-Lotte

    -down model of feeding back research findings to subjects” (Roberts and Sarangi 2003, 340) although, arguably, making results applicable to a real-world context ought to be an essential goal of researcher-practitioner studies. This issue forms the background of the presentation, in which it will be discussed...... how the dissemination of research findings may take place to ensure the creation of real-world outcomes for practitioners (cf. e.g. Nørreklit et al. 1987; Puchta & Potter 2004). The presentation will be centered around the interview study of the discursive constructions of culture in a Danish cross...

  6. Real analysis and probability

    CERN Document Server

    Ash, Robert B; Lukacs, E

    1972-01-01

    Real Analysis and Probability provides the background in real analysis needed for the study of probability. Topics covered range from measure and integration theory to functional analysis and basic concepts of probability. The interplay between measure theory and topology is also discussed, along with conditional probability and expectation, the central limit theorem, and strong laws of large numbers with respect to martingale theory.Comprised of eight chapters, this volume begins with an overview of the basic concepts of the theory of measure and integration, followed by a presentation of var

  7. Real parabolic vector bundles over a real curve

    Indian Academy of Sciences (India)

    Abstract. We define real parabolic structures on real vector bundles over a real curve. Let (X,σX ) be a real curve, and let S ⊂ X be a non-empty finite subset of X such that σX (S) = S. Let N ≥ 2 be an integer. We construct an N-fold cyclic cover p : Y → X in the category of real curves, ramified precisely over each point of S, ...

  8. Real Estate in Denmark

    DEFF Research Database (Denmark)

    Rimmer, Nina Røhr

    2016-01-01

    A general introduction to buying, owning and selling Property i Denmark. The cost of buying and selling property and the tax implications as well as the general concept of real estate is introduced. The paper includes also a brief introduction to some of the aspects which you should beware of when...

  9. Un-real Estate

    DEFF Research Database (Denmark)

    Ulfstjerne, Michael Alexander

    Based on ethnographic fieldwork in Ordos China the dissertation ‘Un-real Estate’ traces a local economic boom into its subsequent bust. It gives an account of how state as well as non-state actors appropriate state development schemes and the unintended effects resulting from the colluding forces...

  10. Real Islamic Logic

    NARCIS (Netherlands)

    Bergstra, J.A.

    2011-01-01

    Four options for assigning a meaning to Islamic Logic are surveyed including a new proposal for an option named "Real Islamic Logic" (RIL). That approach to Islamic Logic should serve modern Islamic objectives in a way comparable to the functionality of Islamic Finance. The prospective role of RIL

  11. Modelling Real Property Transactions

    DEFF Research Database (Denmark)

    Stubkjær, Erik

    2003-01-01

    Der er store forskelle i financieringsomkostningerne ved hussalg i forskellige lande. Er disse forskelle nødvendige? og kan udgifterne reduceres? Sådanne spørgsmål søger forskningsprojektet ?Modelling Real Property Transactions?, officielt sat i værk indenfor rammerne af COST (European Co...

  12. Real World Europeanisation

    DEFF Research Database (Denmark)

    Pedersen, Morten Jarlbæk

    2017-01-01

    Several studies of the impacts of the EU on modern policies and polities evade investigation of the most detailed level of Europeanisation, i.e. gradual legal changes. This seems odd as it is exactly these small gears turning that constitute perhaps the most real and concrete of all types of Euro...

  13. Modelling Real Property Transactions

    DEFF Research Database (Denmark)

    Stubkjær, Erik

    2002-01-01

    for more elaborated concept sets - for a theoretical basis - was among the motives for proposing a concerted research project: Modelling Real Property Transactions. Researchers from 11 European countries co-operate in the project that gained status as a COST action as of March 1st 2001. The majority...

  14. Introductory real analysis

    CERN Document Server

    Kolmogorov, A N; Silverman, Richard A

    1975-01-01

    Self-contained and comprehensive, this elementary introduction to real and functional analysis is readily accessible to those with background in advanced calculus. It covers basic concepts and introductory principles in set theory, metric spaces, topological and linear spaces, linear functionals and linear operators, and much more. 350 problems. 1970 edition.

  15. Is Optimism Real?

    Science.gov (United States)

    Simmons, Joseph P.; Massey, Cade

    2012-01-01

    Is optimism real, or are optimistic forecasts just cheap talk? To help answer this question, we investigated whether optimistic predictions persist in the face of large incentives to be accurate. We asked National Football League football fans to predict the winner of a single game. Roughly half (the partisans) predicted a game involving their…

  16. Real quantum cybernetics

    Science.gov (United States)

    Grössing, Gerhard

    1987-05-01

    It is shown on the basis of quantum cybernetics that one can obtain the usual predictions of quantum theory without ever referring to complex numbered “quantum mechanical amplitudes”. Instead, a very simple formula for transition and certain conditional probabilities is developed that involves real numbers only, thus relating intuitively understandable and in principle directly observable physical quantities.

  17. On real quadric line complexes

    International Nuclear Information System (INIS)

    Krasnov, Vyacheslav A

    2010-01-01

    We describe the topological types of the real parts of the Kummer surfaces associated with real three-dimensional quadric line complexes. The topological type of the real part of such a surface is shown to depend on the number of real singular points: it is determined by the number of such points if any exist, and otherwise the real part of the Kummer surface is either empty or consists of one or two tori.

  18. Elements of real analysis

    CERN Document Server

    Al-Gwaiz, MA

    2006-01-01

    PREFACEPRELIMINARIES Sets FunctionsREAL NUMBERSField AxiomsOrder Axioms Natural Numbers, Integers, Rational NumbersCompleteness Axiom Decimal Representation of Real Numbers Countable SetsSEQUENCESSequences and ConvergenceProperties of Convergent Sequences Monotonic SequencesThe Cauchy Criterion Subsequences Upper and Lower Limits Open and Closed Sets INFINITE SERIESBasic Properties Convergence TestsLIMIT OF A FUNCTIONLimit of a Function Basic Theorems Some Extensions of the LimitMonotonic Functions CONTINUITY Continuous Functions Combinations of Continuous Functions Continuity on an IntervalUniformContinuityCompact Sets and ContinuityDIFFERENTIATION The DerivativeTheMean Value TheoremL'Hôpital's RuleTaylor's TheoremTHE RIEMANN INTEGRALRiemann Integrability Darboux's Theorem and Riemann SumsProperties of the Integral The Fundamental Theorem of Calculus Improper IntegralsSEQUENCES AND SERIES OF FUNCTIONSSequences of FunctionsProperties of Uniform ConvergenceSeries of FunctionsPower Series LEBESGUE MEASURE Clas...

  19. Real topological string amplitudes

    Energy Technology Data Exchange (ETDEWEB)

    Narain, K.S. [The Abdus Salam International Centre for Theoretical Physics (ICTP),Strada Costiera 11, Trieste, 34151 (Italy); Piazzalunga, N. [Simons Center for Geometry and Physics, State University of New York,Stony Brook, NY, 11794-3636 (United States); International School for Advanced Studies (SISSA) and INFN, Sez. di Trieste,via Bonomea 265, Trieste, 34136 (Italy); Tanzini, A. [International School for Advanced Studies (SISSA) and INFN, Sez. di Trieste,via Bonomea 265, Trieste, 34136 (Italy)

    2017-03-15

    We discuss the physical superstring correlation functions in type I theory (or equivalently type II with orientifold) that compute real topological string amplitudes. We consider the correlator corresponding to holomorphic derivative of the real topological amplitude G{sub χ}, at fixed worldsheet Euler characteristic χ. This corresponds in the low-energy effective action to N=2 Weyl multiplet, appropriately reduced to the orientifold invariant part, and raised to the power g{sup ′}=−χ+1. We show that the physical string correlator gives precisely the holomorphic derivative of topological amplitude. Finally, we apply this method to the standard closed oriented case as well, and prove a similar statement for the topological amplitude F{sub g}.

  20. Route around real time

    International Nuclear Information System (INIS)

    Terrier, Francois

    1996-01-01

    The greater and greater autonomy and complexity asked to the control and command systems lead to work on introducing techniques such as Artificial Intelligence or concurrent object programming in industrial applications. However, while the critical feature of these systems impose to control the dynamics of the proposed solutions, their complexity often imposes a high adaptability to a partially modelled environment. The studies presented start from low level control and command systems to more complex applications at higher levels, such as 'supervision systems'. Techniques such as temporal reasoning and uncertainty management are proposed for the first studies, while the second are tackled with programming techniques based on the real time object paradigm. The outcomes of this itinerary crystallize on the ACCORD project which targets to manage - on the whole life cycle of a real time application - these two problematics, sometimes antagonistic: control of the dynamics and adaptivity. (author) [fr

  1. Real analysis on intervals

    CERN Document Server

    Choudary, A D R

    2014-01-01

    The book targets undergraduate and postgraduate mathematics students and helps them develop a deep understanding of mathematical analysis. Designed as a first course in real analysis, it helps students learn how abstract mathematical analysis solves mathematical problems that relate to the real world. As well as providing a valuable source of inspiration for contemporary research in mathematics, the book helps students read, understand and construct mathematical proofs, develop their problem-solving abilities and comprehend the importance and frontiers of computer facilities and much more. It offers comprehensive material for both seminars and independent study for readers with a basic knowledge of calculus and linear algebra. The first nine chapters followed by the appendix on the Stieltjes integral are recommended for graduate students studying probability and statistics, while the first eight chapters followed by the appendix on dynamical systems will be of use to students of biology and environmental scie...

  2. International Real Business Cycles

    OpenAIRE

    Mario J. Crucini

    2006-01-01

    This paper is a non-technical review of research developments in the international real business cycle literature. International business cycle facts are summarize with particular attention to the sources of output variance from the expenditure side of the NIPA and the production side, using a familiar neoclassical production function. Theoretical developments focus on the how consumption smoothing and investment dynamics shape the current account; the search for sources and propagation mecha...

  3. Real time falling leaves

    OpenAIRE

    Vázquez Alcocer, Pere Pau; Balsa, Marcos

    2007-01-01

    There is a growing interest in simulating natural phenomena in computer graphics applications. Animating natural scenes in real time is one of the most challenging problems due to the inherent complexity of their structure, formed by millions of geometric entities, and the interactions that happen within. An example of natural scenario that is needed for games or simulation programs are forests. Forests are difficult to render because the huge amount of geometric entities and the large amount...

  4. Inside Real Innovation

    Science.gov (United States)

    2011-11-01

    investors, innovators and people in corporations , universities and government. This breakthrough book gives a ground-floor view of the innovation...investors, innovators and people in corporations , universities and government. INSIDE REAL INNOVATION - How the Right Approach Can Move Ideas from R...shop phenomenon, pioneered by Starbucks and others, was based not on selling coffee but on giving the patrons a congenial setting.) At any rate

  5. Reale Gase, tiefe Temperaturen

    Science.gov (United States)

    Heintze, Joachim

    Wir werden uns in diesem Kapitel zunächst mit der van der Waals'schen Zustandsgleichung befassen. In dieser Gleichung wird versucht, die Abweichungen, die reale Gase vom Verhalten idealer Gase zeigen, durch physikalisch motivierte Korrekturterme zu berücksichtigen. Es zeigt sich, dass die van derWaals-Gleichung geeignet ist, nicht nur die Gasphase, sondern auch die Phänomene bei der Verflüssigung von Gasen und den kritischen Punkt zu beschreiben.

  6. Real Time Strategy Language

    OpenAIRE

    Hayes, Roy; Beling, Peter; Scherer, William

    2014-01-01

    Real Time Strategy (RTS) games provide complex domain to test the latest artificial intelligence (AI) research. In much of the literature, AI systems have been limited to playing one game. Although, this specialization has resulted in stronger AI gaming systems it does not address the key concerns of AI researcher. AI researchers seek the development of AI agents that can autonomously interpret learn, and apply new knowledge. To achieve human level performance, current AI systems rely on game...

  7. Real Time Processing

    CERN Multimedia

    CERN. Geneva; ANDERSON, Dustin James; DOGLIONI, Caterina

    2015-01-01

    The LHC provides experiments with an unprecedented amount of data. Experimental collaborations need to meet storage and computing requirements for the analysis of this data: this is often a limiting factor in the physics program that would be achievable if the whole dataset could be analysed. In this talk, I will describe the strategies adopted by the LHCb, CMS and ATLAS collaborations to overcome these limitations and make the most of LHC data: data parking, data scouting, and real-time analysis.

  8. Real energy cost

    International Nuclear Information System (INIS)

    Vinogradova, I.

    1992-01-01

    Different methods of calculating the real power cost in the USA taking account of damage brought to the environment, public health expenses etc., are considered. Application of complex methods allowing one to directly determine the costs linked with ecology has shown that the most expensive power is generated at the new NPPs and thermal plants using coal. Activities on power saving and increasing the capacity of the existing hydroelectrotechnical equipment are considered to be the most effective from the viewpoint of expenses

  9. Real and complex analysis

    CERN Document Server

    Apelian, Christopher; Taft, Earl; Nashed, Zuhair

    2009-01-01

    The Spaces R, Rk, and CThe Real Numbers RThe Real Spaces RkThe Complex Numbers CPoint-Set Topology Bounded SetsClassification of Points Open and Closed SetsNested Intervals and the Bolzano-Weierstrass Theorem Compactness and Connectedness Limits and Convergence Definitions and First Properties Convergence Results for SequencesTopological Results for Sequences Properties of Infinite SeriesManipulations of Series in RFunctions: Definitions and Limits DefinitionsFunctions as MappingsSome Elementary Complex FunctionsLimits of FunctionsFunctions: Continuity and Convergence Continuity Uniform Continuity Sequences and Series of FunctionsThe DerivativeThe Derivative for f: D1 → RThe Derivative for f: Dk → RThe Derivative for f: Dk → RpThe Derivative for f: D → CThe Inverse and Implicit Function TheoremsReal IntegrationThe Integral of f: [a, b] → RProperties of the Riemann Integral Further Development of Integration TheoryVector-Valued and Line IntegralsComplex IntegrationIntroduction to Complex Integrals Fu...

  10. Several real variables

    CERN Document Server

    Kantorovitz, Shmuel

    2016-01-01

    This undergraduate textbook is based on lectures given by the author on the differential and integral calculus of functions of several real variables. The book has a modern approach and includes topics such as: •The p-norms on vector space and their equivalence •The Weierstrass and Stone-Weierstrass approximation theorems •The differential as a linear functional; Jacobians, Hessians, and Taylor's theorem in several variables •The Implicit Function Theorem for a system of equations, proved via Banach’s Fixed Point Theorem •Applications to Ordinary Differential Equations •Line integrals and an introduction to surface integrals This book features numerous examples, detailed proofs, as well as exercises at the end of sections. Many of the exercises have detailed solutions, making the book suitable for self-study. Several Real Variables will be useful for undergraduate students in mathematics who have completed first courses in linear algebra and analysis of one real variable.

  11. REAL ESTATE PURCHASE AGREEMENTS

    Directory of Open Access Journals (Sweden)

    Bujorel FLOREA

    2016-12-01

    Full Text Available The study presented herein represents a field with good present and future perspectives, especially because real estate property is not under the incidence of a single normative act regarding the sale-purchase agreement of such goods, and given the fact that there are specific legal provisions with respect to various real estate categories and the localization of such property. The article deals with the sale-purchase agreement of various real estate categories, such as fields, buildings, the correspondent lots, urban area, farm, and forests fields, focusing on some particularities. A special care is attributed to examining the applicable laws with regard to the purchase agreements of field lands, the special conditions to be taken into account, the persons that may act as buyers, including foreigners, those without citizenship, and legal persons of a nationality other than Romanian. Finally, a special concern is given to the formalities required for legally exerting the pre-emptive right and the applicable sanctions in that respect.

  12. The real butterfly effect

    International Nuclear Information System (INIS)

    Palmer, T N; Döring, A; Seregin, G

    2014-01-01

    Historical evidence is reviewed to show that what Ed Lorenz meant by the iconic phrase ‘the butterfly effect’ is not at all captured by the notion of sensitive dependence on initial conditions in low-order chaos. Rather, as presented in his 1969 Tellus paper, Lorenz intended the phrase to describe the existence of an absolute finite-time predicability barrier in certain multi-scale fluid systems, implying a breakdown of continuous dependence on initial conditions for large enough forecast lead times. To distinguish from ‘mere’ sensitive dependence, the effect discussed in Lorenz's Tellus paper is referred to as ‘the real butterfly effect’. Theoretical evidence for such a predictability barrier in a fluid described by the three-dimensional Navier–Stokes equations is discussed. Whilst it is still an open question whether the Navier–Stokes equation has this property, evidence from both idealized atmospheric simulators and analysis of operational weather forecasts suggests that the real butterfly effect exists in an asymptotic sense, i.e. for initial-time atmospheric perturbations that are small in scale and amplitude compared with (weather) scales of interest, but still large in scale and amplitude compared with variability in the viscous subrange. Despite this, the real butterfly effect is an intermittent phenomenon in the atmosphere, and its presence can be signalled a priori, and hence mitigated, by ensemble forecast methods. (invited article)

  13. Proyecto de Planta de Extracción y envasado de miel D.O. Miel de La Alcarria en Brihuega (Guadalajara)

    OpenAIRE

    Ruiz Vilar, Laura

    2014-01-01

    El objeto del proyecto es la instalación de una planta de extracción y envasado de miel de una explotación de 1.000 colmenas en la localidad de Brihuega comarca de La Alcarria, para la obtención de miel, polen, cera y jalea real. De las 1.000 colmenas a explotar se dedicará una parte a la obtención de miel dentro de la Denominación de Origen de Miel de la Alcarria y las demás se dedicarán a la obtención de miel, y otros subproductos como pueden ser cera, polen y jalea real. Se pretend...

  14. Ovation Prime Real-Time

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Ovation Prime Real-Time (OPRT) product is a real-time forecast and nowcast model of auroral power and is an operational implementation of the work by Newell et...

  15. Real-time specifications

    DEFF Research Database (Denmark)

    David, A.; Larsen, K.G.; Legay, A.

    2015-01-01

    A specification theory combines notions of specifications and implementations with a satisfaction relation, a refinement relation, and a set of operators supporting stepwise design. We develop a specification framework for real-time systems using Timed I/O Automata as the specification formalism......, with the semantics expressed in terms of Timed I/O Transition Systems. We provide constructs for refinement, consistency checking, logical and structural composition, and quotient of specifications-all indispensable ingredients of a compositional design methodology. The theory is implemented in the new tool Ecdar...

  16. Real interest parity decomposition

    Directory of Open Access Journals (Sweden)

    Alex Luiz Ferreira

    2009-09-01

    Full Text Available The aim of this paper is to investigate the general causes of real interest rate differentials (rids for a sample of emerging markets for the period of January 1996 to August 2007. To this end, two methods are applied. The first consists of breaking the variance of rids down into relative purchasing power pariety and uncovered interest rate parity and shows that inflation differentials are the main source of rids variation; while the second method breaks down the rids and nominal interest rate differentials (nids into nominal and real shocks. Bivariate autoregressive models are estimated under particular identification conditions, having been adequately treated for the identified structural breaks. Impulse response functions and error variance decomposition result in real shocks as being the likely cause of rids.O objetivo deste artigo é investigar as causas gerais dos diferenciais da taxa de juros real (rids para um conjunto de países emergentes, para o período de janeiro de 1996 a agosto de 2007. Para tanto, duas metodologias são aplicadas. A primeira consiste em decompor a variância dos rids entre a paridade do poder de compra relativa e a paridade de juros a descoberto e mostra que os diferenciais de inflação são a fonte predominante da variabilidade dos rids; a segunda decompõe os rids e os diferenciais de juros nominais (nids em choques nominais e reais. Sob certas condições de identificação, modelos autorregressivos bivariados são estimados com tratamento adequado para as quebras estruturais identificadas e as funções de resposta ao impulso e a decomposição da variância dos erros de previsão são obtidas, resultando em evidências favoráveis a que os choques reais são a causa mais provável dos rids.

  17. Sistemas en tiempo real

    OpenAIRE

    Ramón, Hugo Dionisio; Romero, Fernando

    2002-01-01

    El objetivo de esta línea de investigación es el estudio y desarrollo de aplicaciones que poseen restricciones temporales. Resulta de interés el estudio de diferentes metodologías para la especificación y desarrollo de aplicaciones en tiempo real, así como las plataformas donde dichas aplicaciones pueden ejecutarse. Se trabaja experimentalmente con distintos tipos de hardware y software entre los que pueden mencionarse placas A/D, mini-robots, máquinas multimicroprocesadores y diferentes s...

  18. Real Time Text Analysis

    Science.gov (United States)

    Senthilkumar, K.; Ruchika Mehra Vijayan, E.

    2017-11-01

    This paper aims to illustrate real time analysis of large scale data. For practical implementation we are performing sentiment analysis on live Twitter feeds for each individual tweet. To analyze sentiments we will train our data model on sentiWordNet, a polarity assigned wordNet sample by Princeton University. Our main objective will be to efficiency analyze large scale data on the fly using distributed computation. Apache Spark and Apache Hadoop eco system is used as distributed computation platform with Java as development language

  19. Real time Faraday spectrometer

    Science.gov (United States)

    Smith, Jr., Tommy E.; Struve, Kenneth W.; Colella, Nicholas J.

    1991-01-01

    This invention uses a dipole magnet to bend the path of a charged particle beam. As the deflected particles exit the magnet, they are spatially dispersed in the bend-plane of the magnet according to their respective momenta and pass to a plurality of chambers having Faraday probes positioned therein. Both the current and energy distribution of the particles is then determined by the non-intersecting Faraday probes located along the chambers. The Faraday probes are magnetically isolated from each other by thin metal walls of the chambers, effectively providing real time current-versus-energy particle measurements.

  20. Real time Faraday spectrometer

    International Nuclear Information System (INIS)

    Smith, T.E.; Struve, K.W.; Colella, N.J.

    1991-01-01

    This patent describes an invention which uses a dipole magnet to bend the path of a charged particle beam. As the deflected particles exit the magnet, they are spatially dispersed in the bend-plane of the magnet according to their respective momenta and pass to a plurality of chambers having Faraday probes positioned therein. Both the current and energy distribution of the particles is then determined by the non-intersecting Faraday probes located along the chambers. The Faraday probes are magnetically isolated from each other by thin metal walls of the chambers, effectively providing real time current-versus-energy particle measurements

  1. Real algebraic geometry

    CERN Document Server

    Bochnak, Jacek; Roy, Marie-Françoise

    1998-01-01

    This book is a systematic treatment of real algebraic geometry, a subject that has strong interrelation with other areas of mathematics: singularity theory, differential topology, quadratic forms, commutative algebra, model theory, complexity theory etc. The careful and clearly written account covers both basic concepts and up-to-date research topics. It may be used as text for a graduate course. The present edition is a substantially revised and expanded English version of the book "Géometrie algébrique réelle" originally published in French, in 1987, as Volume 12 of ERGEBNISSE. Since the publication of the French version the theory has made advances in several directions. Many of these are included in this English version. Thus the English book may be regarded as a completely new treatment of the subject.

  2. Real time spectrum analysis

    International Nuclear Information System (INIS)

    Blunden, A.; O'Prey, D.G.; Tait, W.H.

    1983-01-01

    A method is described for the separation of a composite pulse-height spectrum into its unresolved component parts, which belong to a set of measured library spectra. The method allows real-time estimation giving running estimates during acquisition of the spectrum, minimises computation space, especially for a number of parallel calculations, estimates in advance the rms errors, and produces a significance measure for the hypothesis that the composite contains only the library spectra. Least squares curve-fitting, and other methods, can be compared, with the formalism developed, allowing analytical comparison of the effect of detector energy resolution and detection efficiency. A rational basis for the choice between the various methods of spectrum analysis follows from the theory, minimising rms estimation errors. The method described is applicable for very low numbers of counts and poor resolution. (orig.)

  3. Differentiation of real functions

    CERN Document Server

    Bruckner, Andrew

    1994-01-01

    Topics related to the differentiation of real functions have received considerable attention during the last few decades. This book provides an efficient account of the present state of the subject. Bruckner addresses in detail the problems that arise when dealing with the class \\Delta ' of derivatives, a class that is difficult to handle for a number of reasons. Several generalized forms of differentiation have assumed importance in the solution of various problems. Some generalized derivatives are excellent substitutes for the ordinary derivative when the latter is not known to exist; others are not. Bruckner studies generalized derivatives and indicates "geometric" conditions that determine whether or not a generalized derivative will be a good substitute for the ordinary derivative. There are a number of classes of functions closely linked to differentiation theory, and these are examined in some detail. The book unifies many important results from the literature as well as some results not previously pub...

  4. Real time production optimization

    Energy Technology Data Exchange (ETDEWEB)

    Saputelli, Luigi; Otavio, Joao; Araujo, Turiassu; Escorcia, Alvaro [Halliburton, Houston, TX (United States). Landmark Division

    2004-07-01

    Production optimization encompasses various activities of measuring, analyzing, modeling, prioritizing and implementing actions to enhance productivity of a field. We present a state-of-the-art framework for optimizing production on a continuous basis as new sensor data is acquired in real time. Permanently acquired data is modeled and analyzed in order to create predictive models. A model based control strategy is used to regulate well and field instrumentation. The optimum field operating point, which changes with time, satisfies the maximum economic return. This work is a starting point for further development in automatic, intelligent reservoir technologies which get the most out of the abilities of permanent, instrumented wells and remotely activated downhole completions. The strategy, tested with history-matched data from a compartmentalised giant field, proved to reduce operating costs while increasing oil recovery by 27% in this field. (author)

  5. Real time urbanism

    Directory of Open Access Journals (Sweden)

    Ana Ruiz Varona

    2012-12-01

    Full Text Available Nowadays, given the technological revolution of the society of information, the administrative management of the cities faces a new problem not as related to the projection of the urban space as to the capacity of controlling and measuring the process of direct and centralized production of the cities by part of some non-homogeneous social multitudes, in a hyper-accelerated time towards instantaneity. Against libertarian apologies of the new “participative urbanisms”, the article puts forward a discourse that shows the lost associated to the new problem of temporal instantaneity. In this regard we claim new process of mediation that allow administrations and urbanist monitoring the production of the city. To that end, a previous and necessary step will be the redefinition of the role of a new real time urbanist.

  6. Almost real photons

    International Nuclear Information System (INIS)

    Fujii, H.

    1977-01-01

    High energy photon-proton scattering is expected to bring an important information on strong and electromagnetic interaction, and is discussed in this paper. When the ''mass'' of the photon is less than that of the lightest hadron, it is said ''the photon is almost real''. The photon energy is sufficiently high to check the energy dependence of the gamma-proton total cross section, even in the first stage of TRISTAN. The tagging system consists of four multi-wire proportional chambers (MWPC) and a lead glass Cerenkov counter. The energy of scattered electrons is determined with the Cerenkov counter. The equivalent-photon approximation is a useful method to obtain the counting rates. The estimation of the counting rate was made under the expected value of the total cross section. The estimated counting rate is strong enough for the experiment of the gamma-proton total cross section measurement. (Kato, T.)

  7. Real-estate lakes

    Science.gov (United States)

    Rickert, David A.; Spieker, Andrew Maute

    1971-01-01

    Since the dawn of civilization waterfront land has been an irresistible attraction to man. Throughout history he has sought out locations fronting on oceans, rivers, and lakes. Originally sought for proximity .to water supply and transportation, such locations are now sought more for their esthetic qualities and for recreation. Usable natural waterfront property is limited, however, and the more desirable sites in many of our urban areas have already been taken. The lack of available waterfront sites has led to the creation of many artificial bodies of water. The rapid suburbanization that has characterized urban growth in America since the end of World War II, together with increasing affluence and le-isure time, has created a ready market for waterfront property. Accordingly, lake-centered subdivisions and developments dot the suburban landscape in many of our major urban areas. Literally thousands of lakes surrounded by homes have materialized during this period of rapid growth. Recently, several "new town" communities have been planned around this lake-centered concept. A lake can be either an asset or a liaoility to a community. A clean, clear, attractively landscaped lake is a definite asset, whereas a weed-choked, foul-smelling mudhole is a distinct liability. The urban environment poses both problems and imaginative opportunities in the development of lakes. Creation of a lake causes changes in all aspects of the environment. Hydrologic systems and ecological patterns are usually most severely altered. The developer should be aware of the potential changes; it is not sufficient merely to build a dam across a stream or to dig a hole in the ground. Development of Gl a successful lake requires careful planning for site selection and design, followed by thorough and cc ntinual management. The purpose of this report is to describe the characteristics of real-estate lakes, to pinpoint potential pmblems, and to suggest possible planning and management guidelines

  8. An introduction to real analysis

    CERN Document Server

    Ball, Derek G

    1973-01-01

    An Introduction to Real Analysis presents the concepts of real analysis and highlights the problems which necessitate the introduction of these concepts. Topics range from sets, relations, and functions to numbers, sequences, series, derivatives, and the Riemann integral. This volume begins with an introduction to some of the problems which are met in the use of numbers for measuring, and which provide motivation for the creation of real analysis. Attention then turns to real numbers that are built up from natural numbers, with emphasis on integers, rationals, and irrationals. The chapters tha

  9. El maestro del Pavo Real

    OpenAIRE

    Montalvo Martín, Francisco J

    2013-01-01

    Este trabajo pretende hacer una primera aproximación al Maestro del Pavo Real, un platero barcelonés del siglo XIX que usó como marca personal la silueta de un pavo real visto de frente con la cola desplegada y todo ello dentro de un círculo. Este trabajo pretende hacer una primera aproximación al Maestro del Pavo Real, un platero barcelonés del siglo XIX que usó como marca personal la silueta de un pavo real visto de frente con la cola desplegada y todo ello dentro de un círculo.

  10. Dependable Real-Time Systems

    Science.gov (United States)

    1991-09-30

    0196 or 413 545-0720 PI E-mail Address: krithi@nirvan.cs.umass.edu, stankovic(ocs.umass.edu Grant or Contract Title: Dependable Real - Time Systems Grant...Dependable Real - Time Systems " Grant or Contract Number: N00014-85-k-0398 L " Reporting Period: 1 Oct 87 - 30 Sep 91 , 2. Summary of Accomplishments ’ 2.1 Our...in developing a sound approach to scheduling tasks in complex real - time systems , (2) developed a real-time operating system kernel, a preliminary

  11. The real new economy.

    Science.gov (United States)

    Farrell, Diana

    2003-10-01

    During the soar-and-swoon days of the late 1990s, many people believed that information technology, and the Internet in particular, were "changing everything" in business. A fundamental change did happen in the 1990s, but it was less about technology than about competition. Under director Diana Farrell, the McKinsey Global Institute has conducted an extensive study of productivity and its connection to corporate IT spending and use during that period. The study revealed that information technology is important--but not central--to the fate of industries and individual companies. So if information technology was not the primary factor in the productivity surge, what was? The study points to competition and innovation. In those industries that saw increases in competitive intensity, managers were forced to innovate aggressively to protect their revenues and profits. Those innovations--in products, business practices, and technology--led to the gains in productivity. In fact, a critical dynamic of the new economy--the real new economy--is the virtuous cycle of competition, innovation, and productivity growth. Managers can innovate in many ways, but during the 1990s, information technology was a particularly powerful tool, for three reasons: First, IT enabled the development of attractive new products and efficient new business processes. Second, it facilitated the rapid industrywide diffusion of innovations. And third, it exhibited strong scale economies--its benefits multiplied rapidly as its use expanded. This article reveals surprising data on how various industries in the United States and Europe were affected by competition, innovation, and information technology in the 1990s and offers insights about how managers can get more from their IT investments.

  12. Making Riverscapes Real (Invited)

    Science.gov (United States)

    Marcus, A.; Carbonneau, P.; Fonstad, M. A.; Walther, S. C.

    2009-12-01

    comparable to physical habitat data. Given that funding will not be available in most rivers to map organism distributions across all scales and locations, modeling of organism distributions over space and time will have to be an integral part of making riverscapes “real.” A second challenge is that existing quantitative and qualitative models do not capture or explain the multiple scales of spatial variability shown by continuous, high resolution maps of riverscapes. Riverscapes thus challenge our existing understanding of how rivers structure themselves and will force development of new paradigms. Absent these new paradigms, riverscape maps provide an information overload that scientists and managers have trouble conceptualizing and using. This paper presents examples of riverscape mapping from around the world, demonstrates ways in which the maps can be used, and discusses the fundamental ways in which multiscalar, basin-extent riverscapes challenge our present understanding of river structure and function.

  13. Motivating Young Writers through Write-Talks: Real Writers, Real Audiences, Real Purposes

    Science.gov (United States)

    Wilson, Amy Alexandra

    2008-01-01

    Modeled after the popular teaching technique of book talks, write talks are brief motivational talks designed to engage students in writing. Teachers can invite adults from their communities into their classrooms to give write talks, thereby conveying to students that real people go through different writing processes to write real texts for real…

  14. Economic Effects Real Estate Tax

    Directory of Open Access Journals (Sweden)

    Tadić Milan

    2016-06-01

    Full Text Available The real estate tax is usually a fiscal instrument which performs the property tax. When it comes to real property or immovable this term include: apartments, houses, land, cottages, excess housing landscape and more. The real estate tax as a form of the fiscal charges ownership or use of certain forms of real estate, and the revenue from this tax is levied on the area where the property is located regardless of the place of residence of its owner. The tax base for the calculation of this tax usually consists of the market, estimated or annuity value of certain real estate. This form of taxation in the Republic of Serbian applies from 1.1.2012., and its introduction has been replaced by former property taxes. The differences between the two concepts mentioned taxes are numerous and significant. Among the more important are: subject to taxation under the new concept of the real estate rather than law, a taxpayer is any property owner rather than the holder of rights to immovable property tax base is the market value of real estate which is replaced by the payment of taxes per square meter of usable area, the rate of property tax is determined local government, which can not be lower than 0.05% of the estimated value of the real estate nor higher than 0.5% of the appraised value of real estate. The last change, ie. The new law on Property Tax from 5.11.2015. was determined by the tax rate to 20%. The fact that local governments each of them determines the tax rate on real estate which range from high to low rates of multiple, makes this tax is progressive. Progression is particularly expressed in the distinction applied tax rates of developed and undeveloped municipalities, where we have a case that less developed tolerate a higher tax burden, which leads to negative economic effects. However, real estate tax has its own economic and social characteristics which must be aligned with the objectives of tax policy. This means that the real estate tax

  15. Analysing UK real estate market forecast disagreement

    OpenAIRE

    McAllister, Patrick; Newell, G.; Matysiak, George

    2005-01-01

    Given the significance of forecasting in real estate investment decisions, this paper investigates forecast uncertainty and disagreement in real estate market forecasts. Using the Investment Property Forum (IPF) quarterly survey amongst UK independent real estate forecasters, these real estate forecasts are compared with actual real estate performance to assess a number of real estate forecasting issues in the UK over 1999-2004, including real estate forecast error, bias and consensus. The re...

  16. Real analysis with economic applications

    CERN Document Server

    Ok, Efe A

    2011-01-01

    There are many mathematics textbooks on real analysis, but they focus on topics not readily helpful for studying economic theory or they are inaccessible to most graduate students of economics. Real Analysis with Economic Applications aims to fill this gap by providing an ideal textbook and reference on real analysis tailored specifically to the concerns of such students. The emphasis throughout is on topics directly relevant to economic theory. In addition to addressing the usual topics of real analysis, this book discusses the elements of order theory, convex analysis, optimization, correspondences, linear and nonlinear functional analysis, fixed-point theory, dynamic programming, and calculus of variations. Efe Ok complements the mathematical development with applications that provide concise introductions to various topics from economic theory, including individual decision theory and games, welfare economics, information theory, general equilibrium and finance, and intertemporal economics. Moreover, a...

  17. Real-Time Parameter Identification

    Data.gov (United States)

    National Aeronautics and Space Administration — Armstrong researchers have implemented in the control room a technique for estimating in real time the aerodynamic parameters that describe the stability and control...

  18. From real to complex analysis

    CERN Document Server

    Dyer, R H

    2014-01-01

    The purpose of this book is to provide an integrated course in real and complex analysis for those who have already taken a preliminary course in real analysis. It particularly emphasises the interplay between analysis and topology. Beginning with the theory of the Riemann integral (and its improper extension) on the real line, the fundamentals of metric spaces are then developed, with special attention being paid to connectedness, simple connectedness and various forms of homotopy. The final chapter develops the theory of complex analysis, in which emphasis is placed on the argument, the winding number, and a general (homology) version of Cauchy's theorem which is proved using the approach due to Dixon. Special features are the inclusion of proofs of Montel's theorem, the Riemann mapping theorem and the Jordan curve theorem that arise naturally from the earlier development. Extensive exercises are included in each of the chapters, detailed solutions of the majority of which are given at the end. From Real to...

  19. Strange functions in real analysis

    CERN Document Server

    Kharazishvili, AB

    2005-01-01

    Weierstrass and Blancmange nowhere differentiable functions, Lebesgue integrable functions with everywhere divergent Fourier series, and various nonintegrable Lebesgue measurable functions. While dubbed strange or "pathological," these functions are ubiquitous throughout mathematics and play an important role in analysis, not only as counterexamples of seemingly true and natural statements, but also to stimulate and inspire the further development of real analysis.Strange Functions in Real Analysis explores a number of important examples and constructions of pathological functions. After introducing the basic concepts, the author begins with Cantor and Peano-type functions, then moves to functions whose constructions require essentially noneffective methods. These include functions without the Baire property, functions associated with a Hamel basis of the real line, and Sierpinski-Zygmund functions that are discontinuous on each subset of the real line having the cardinality continuum. Finally, he considers e...

  20. Real and Hybrid Atomic Orbitals.

    Science.gov (United States)

    Cook, D. B.; Fowler, P. W.

    1981-01-01

    Demonstrates that the Schrodinger equation for the hydrogenlike atom separates in both spheroconal and prolate spheroidal coordinates and that these separations provide a sound theoretical basis for the real and hybrid atomic orbitals. (Author/SK)

  1. Prototyping real-time systems

    OpenAIRE

    Clynch, Gary

    1994-01-01

    The traditional software development paradigm, the waterfall life cycle model, is defective when used for developing real-time systems. This thesis puts forward an executable prototyping approach for the development of real-time systems. A prototyping system is proposed which uses ESML (Extended Systems Modelling Language) as a prototype specification language. The prototyping system advocates the translation of non-executable ESML specifications into executable LOOPN (Language of Object ...

  2. Real-time vision systems

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, R.; Hernandez, J.E.; Lu, Shin-yee [Lawrence Livermore National Lab., CA (United States)

    1994-11-15

    Many industrial and defence applications require an ability to make instantaneous decisions based on sensor input of a time varying process. Such systems are referred to as `real-time systems` because they process and act on data as it occurs in time. When a vision sensor is used in a real-time system, the processing demands can be quite substantial, with typical data rates of 10-20 million samples per second. A real-time Machine Vision Laboratory (MVL) was established in FY94 to extend our years of experience in developing computer vision algorithms to include the development and implementation of real-time vision systems. The laboratory is equipped with a variety of hardware components, including Datacube image acquisition and processing boards, a Sun workstation, and several different types of CCD cameras, including monochrome and color area cameras and analog and digital line-scan cameras. The equipment is reconfigurable for prototyping different applications. This facility has been used to support several programs at LLNL, including O Division`s Peacemaker and Deadeye Projects as well as the CRADA with the U.S. Textile Industry, CAFE (Computer Aided Fabric Inspection). To date, we have successfully demonstrated several real-time applications: bullet tracking, stereo tracking and ranging, and web inspection. This work has been documented in the ongoing development of a real-time software library.

  3. Real numbers tell real stories in health services management.

    Science.gov (United States)

    Heenan, Michael; Wood, Brady; Taylor, D Wayne

    2010-01-01

    In the words of one hospital manager, "hospital data is currently indigestible and alien to the average user." Drawing upon the experience of an academic hospital that, contrary to established practice, published real numbers alongside rates and ratios during a Clostridium difficile outbreak, the authors examined the pitfalls of publishing only abstract performance measures and the advantages of releasing real numbers to the public. This article identifies lessons for hospital board governance, media relations, employee communications, and citizen and patient engagement that are applicable across the healthcare industry in many countries. If healthcare is to be a caring industry, then care should be taken in the public reporting of data and information.

  4. Real Estate Agent Commission Disputes

    Directory of Open Access Journals (Sweden)

    Anida Duarte

    2015-06-01

    Full Text Available The purpose of this study was to examine the relationship among Procuring Cause Law, real estate agent years of experience, and real estate commission disputes. A pilot survey was conducted in the southwestern United States among real estate agents, realtor(s, and brokers. After testing the hypothesis, the decision was made to fail to reject the hypothesis and conclude that real estate agent experience and not Procuring Cause Law produced favorable outcomes in disputes. As a result, the following recommendations were made: (a Agency seller and buyer’s agreements should be used in each transaction to avoid disputes, (b proper expectations and guidelines should be reviewed prior to starting any real estate transaction, (c a checklist may assist in the assurance that all valuable information is reviewed, (d agents could benefit from fully understanding Procuring Cause Law and sharing this information with their clients, (e state and national regulatory requirements of the law could be modified for easier understanding and use, and (f consumers who willfully violate the law could be subject to monetary penalties.

  5. Towards Real-Time Argumentation

    Directory of Open Access Journals (Sweden)

    Vicente JULIÁN

    2016-07-01

    Full Text Available In this paper, we deal with the problem of real-time coordination with the more general approach of reaching real-time agreements in MAS. Concretely, this work proposes a real-time argumentation framework in an attempt to provide agents with the ability of engaging in argumentative dialogues and come with a solution for their underlying agreement process within a bounded period of time. The framework has been implemented and evaluated in the domain of a customer support application. Concretely, we consider a society of agents that act on behalf of a group of technicians that must solve problems in a Technology Management Centre (TMC within a bounded time. This centre controls every process implicated in the provision of technological and customer support services to private or public organisations by means of a call centre. The contract signed between the TCM and the customer establishes penalties if the specified time is exceeded.

  6. Establishment Reality vs. Maintenance Reality: How Real Is Real Enough?

    Science.gov (United States)

    Lindsay, E. D.; Murray, S.; Liu, D. K.; Lowe, D. B.; Bright, C. G.

    2009-01-01

    Remote and virtual laboratories are increasingly prevalent alternatives to the face-to-face laboratory experience; however, the question of their learning outcomes is yet to be fully investigated. There are many presumptions regarding the effectiveness of these approaches; foremost amongst these assumptions is that the experience must be "real" to…

  7. Real Analysis A Historical Approach

    CERN Document Server

    Stahl, Saul

    2011-01-01

    A provocative look at the tools and history of real analysis This new edition of Real Analysis: A Historical Approach continues to serve as an interesting read for students of analysis. Combining historical coverage with a superb introductory treatment, this book helps readers easily make the transition from concrete to abstract ideas. The book begins with an exciting sampling of classic and famous problems first posed by some of the greatest mathematicians of all time. Archimedes, Fermat, Newton, and Euler are each summoned in turn, illuminating the utility of infinite, power, and trigonome

  8. Elementary real and complex analysis

    CERN Document Server

    Shilov, Georgi E

    1996-01-01

    In this book the renowned Russian mathematician Georgi E. Shilov brings his unique perspective to real and complex analysis, an area of perennial interest in mathematics. Although there are many books available on the topic, the present work is specially designed for undergraduates in mathematics, science and engineering. A high level of mathematical sophistication is not required.The book begins with a systematic study of real numbers, understood to be a set of objects satisfying certain definite axioms. The concepts of a mathematical structure and an isomorphism are introduced in Chapter 2,

  9. Real time automatic scene classification

    NARCIS (Netherlands)

    Verbrugge, R.; Israël, Menno; Taatgen, N.; van den Broek, Egon; van der Putten, Peter; Schomaker, L.; den Uyl, Marten J.

    2004-01-01

    This work has been done as part of the EU VICAR (IST) project and the EU SCOFI project (IAP). The aim of the first project was to develop a real time video indexing classification annotation and retrieval system. For our systems, we have adapted the approach of Picard and Minka [3], who categorized

  10. Real time freeway incident detection.

    Science.gov (United States)

    2014-04-01

    The US Department of Transportation (US-DOT) estimates that over half of all congestion : events are caused by highway incidents rather than by rush-hour traffic in big cities. Real-time : incident detection on freeways is an important part of any mo...

  11. Real Time Conference 2016 Overview

    Science.gov (United States)

    Luchetta, Adriano

    2017-06-01

    This is a special issue of the IEEE Transactions on Nuclear Science containing papers from the invited, oral, and poster presentation of the 20th Real Time Conference (RT2016). The conference was held June 6-10, 2016, at Centro Congressi Padova “A. Luciani,” Padova, Italy, and was organized by Consorzio RFX (CNR, ENEA, INFN, Università di Padova, Acciaierie Venete SpA) and the Istituto Nazionale di Fisica Nucleare. The Real Time Conference is multidisciplinary and focuses on the latest developments in real-time techniques in high-energy physics, nuclear physics, astrophysics and astroparticle physics, nuclear fusion, medical physics, space instrumentation, nuclear power instrumentation, general radiation instrumentation, and real-time security and safety. Taking place every second year, it is sponsored by the Computer Application in Nuclear and Plasma Sciences technical committee of the IEEE Nuclear and Plasma Sciences Society. RT2016 attracted more than 240 registrants, with a large proportion of young researchers and engineers. It had an attendance of 67 students from many countries.

  12. Designing Real Time Assistive Technologies

    DEFF Research Database (Denmark)

    Sonne, Tobias; Obel, Carsten; Grønbæk, Kaj

    2015-01-01

    activities and assists the child in maintaining attention. From a preliminary evaluation of CASTT with 20 children in several schools, we and found that: 1) it is possible to create a wearable sensor system for children with ADHD that monitors physical and physiological activities in real time; and that 2...

  13. Uncertainty in the Real World

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 4; Issue 2. Uncertainty in the Real World - Fuzzy Sets. Satish Kumar. General Article Volume 4 Issue 2 February 1999 pp 37-47. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/004/02/0037-0047 ...

  14. Mathematics in the Real World.

    Science.gov (United States)

    Borenstein, Matt

    1997-01-01

    The abstract nature of algebra causes difficulties for many students. Describes "Real-World Data," an algebra course designed for students with low grades in algebra and provides multidisciplinary experiments (linear functions and variations; quadratic, square-root, and inverse relations; and exponential and periodic variation)…

  15. Equations for formally real meadows

    NARCIS (Netherlands)

    Bergstra, J.A.; Bethke, I.; Ponse, A.

    2015-01-01

    We consider the signatures Σm = (0,1,−,+,⋅,−1)  of meadows and (Σm,s)  of signed meadows. We give two complete axiomatizations of the equational theories of the real numbers with respect to these signatures. In the first case, we extend the axiomatization of zero-totalized fields by a single axiom

  16. Foley Sounds vs Real Sounds

    DEFF Research Database (Denmark)

    Trento, Stefano; Götzen, Amalia De

    2011-01-01

    This paper is an initial attempt to study the world of sound effects for motion pictures, also known as Foley sounds. Throughout several audio and audio-video tests we have compared both Foley and real sounds originated by an identical action. The main purpose was to evaluate if sound effects...

  17. Real-world driving behaviour

    NARCIS (Netherlands)

    Rijkeboer, R.C.; Hendriksen, P.; Gense, N.L.J.

    2001-01-01

    With increasing complexity of engine management system there is a tendency for traditional driving cyles to become further and further removed from reality. So for a sensible evaluation of emissions and fuel consumption of road vehicles in the field there is an urgent need for 'real-world' driving

  18. Lagoa Real design - Mineral engineering

    International Nuclear Information System (INIS)

    Forman, J.M.A.

    1982-01-01

    This paper presents the works realized, in course and to realize of Lagoa Real Design, including the works for implantation of Mineral-Industrial complex with the production capacity of 1.000 ton of U sub(3) O sub(8) per year from 1988. (author)

  19. Alice in the Real World

    Science.gov (United States)

    Parker, Tom

    2012-01-01

    As a fifth-grade mathematics teacher, the author tries to create authentic problem-solving activities that connect to the world in which his students live. He discovered a natural connection to his students' real world at a computer camp. A friend introduced him to Alice, a computer application developed at Carnegie Mellon, under the leadership of…

  20. Are real teams healthy teams?

    NARCIS (Netherlands)

    Buljac, M.; van Woerkom, M.; van Wijngaarden, P.

    2013-01-01

    This study examines the impact of real-team--as opposed to a team in name only--characteristics (i.e., team boundaries, stability of membership, and task interdependence) on team processes (i.e., team learning and emotional support) and team effectiveness in the long-term care sector. We employed a

  1. Getting real in the classroom

    NARCIS (Netherlands)

    Genuchten, van M.J.I.M.; Vogel, D.R.

    2007-01-01

    Exposing students to real-world projects will encourage them to share, learn, and improve.The BOHKNet project began in 1998 with the universities of Eindhoven and Hong Kong. Each BOHKNet team typically consists of 8 to 10 students in two to four locations. The team is assigned a software-related

  2. Lagoa Real complex - implementation program

    International Nuclear Information System (INIS)

    Anon.

    1984-01-01

    The description of the activities from the Lagoa Real Complex is presented, including the development of a complementation process with available drill core samples and drilling an evaluation Cachoeira Deposit. Studies already developed indicate that Cachoeira Deposit has about 70 ton of U3O8 per meter of depth. (author)

  3. ISTTOK real-time architecture

    Energy Technology Data Exchange (ETDEWEB)

    Carvalho, Ivo S., E-mail: ivoc@ipfn.ist.utl.pt; Duarte, Paulo; Fernandes, Horácio; Valcárcel, Daniel F.; Carvalho, Pedro J.; Silva, Carlos; Duarte, André S.; Neto, André; Sousa, Jorge; Batista, António J.N.; Hekkert, Tiago; Carvalho, Bernardo B.

    2014-03-15

    Highlights: • All real-time diagnostics and actuators were integrated in the same control platform. • A 100 μs control cycle was achieved under the MARTe framework. • Time-windows based control with several event-driven control strategies implemented. • AC discharges with exception handling on iron core flux saturation. • An HTML discharge configuration was developed for configuring the MARTe system. - Abstract: The ISTTOK tokamak was upgraded with a plasma control system based on the Advanced Telecommunications Computing Architecture (ATCA) standard. This control system was designed to improve the discharge stability and to extend the operational space to the alternate plasma current (AC) discharges as part of the ISTTOK scientific program. In order to accomplish these objectives all ISTTOK diagnostics and actuators relevant for real-time operation were integrated in the control system. The control system was programmed in C++ over the Multi-threaded Application Real-Time executor (MARTe) which provides, among other features, a real-time scheduler, an interrupt handler, an intercommunications interface between code blocks and a clearly bounded interface with the external devices. As a complement to the MARTe framework, the BaseLib2 library provides the foundations for the data, code introspection and also a Hypertext Transfer Protocol (HTTP) server service. Taking advantage of the modular nature of MARTe, the algorithms of each diagnostic data processing, discharge timing, context switch, control and actuators output reference generation, run on well-defined blocks of code named Generic Application Module (GAM). This approach allows reusability of the code, simplified simulation, replacement or editing without changing the remaining GAMs. The ISTTOK control system GAMs run sequentially each 100 μs cycle on an Intel{sup ®} Q8200 4-core processor running at 2.33 GHz located in the ATCA crate. Two boards (inside the ATCA crate) with 32 analog

  4. ISTTOK real-time architecture

    International Nuclear Information System (INIS)

    Carvalho, Ivo S.; Duarte, Paulo; Fernandes, Horácio; Valcárcel, Daniel F.; Carvalho, Pedro J.; Silva, Carlos; Duarte, André S.; Neto, André; Sousa, Jorge; Batista, António J.N.; Hekkert, Tiago; Carvalho, Bernardo B.

    2014-01-01

    Highlights: • All real-time diagnostics and actuators were integrated in the same control platform. • A 100 μs control cycle was achieved under the MARTe framework. • Time-windows based control with several event-driven control strategies implemented. • AC discharges with exception handling on iron core flux saturation. • An HTML discharge configuration was developed for configuring the MARTe system. - Abstract: The ISTTOK tokamak was upgraded with a plasma control system based on the Advanced Telecommunications Computing Architecture (ATCA) standard. This control system was designed to improve the discharge stability and to extend the operational space to the alternate plasma current (AC) discharges as part of the ISTTOK scientific program. In order to accomplish these objectives all ISTTOK diagnostics and actuators relevant for real-time operation were integrated in the control system. The control system was programmed in C++ over the Multi-threaded Application Real-Time executor (MARTe) which provides, among other features, a real-time scheduler, an interrupt handler, an intercommunications interface between code blocks and a clearly bounded interface with the external devices. As a complement to the MARTe framework, the BaseLib2 library provides the foundations for the data, code introspection and also a Hypertext Transfer Protocol (HTTP) server service. Taking advantage of the modular nature of MARTe, the algorithms of each diagnostic data processing, discharge timing, context switch, control and actuators output reference generation, run on well-defined blocks of code named Generic Application Module (GAM). This approach allows reusability of the code, simplified simulation, replacement or editing without changing the remaining GAMs. The ISTTOK control system GAMs run sequentially each 100 μs cycle on an Intel ® Q8200 4-core processor running at 2.33 GHz located in the ATCA crate. Two boards (inside the ATCA crate) with 32 analog

  5. Real change in the real world: an achievable goal.

    Science.gov (United States)

    Friedman, Robert M

    2010-03-01

    This commentary builds on the papers presented at the Vanderbilt Conference by emphasizing the importance of better understanding the process of change-making if real change in the real world is to be achieved. The commentary reviews several frameworks and research findings related to achieving large-scale sustainable change that benefits children and families. It calls for the application of systems thinking as a complement to the more micro-level research that was presented at the Vanderbilt conference. Such an approach would have implications for framing of the issue, for the strategies that are taken to try to achieve change, and for research/evaluation methods for studying complex, dynamic, nonlinear systems.

  6. E-Real Estate Property Management System

    OpenAIRE

    Majid Shanto, Syed Nurul

    2003-01-01

    Real estate business is one of the oldest businesses in the business world which is also considered to be associated with the toughest business environment to invest for investment because of its volatile behavior. In order to be competitive in the real estate market, the real estate developer as well as real estate specialist like real estate agent is constantly fighting for achieving marginal profit from the market. 21st century is the century of advance technology and utilizing its power i...

  7. Quantitative (real-time) PCR

    International Nuclear Information System (INIS)

    Denman, S.E.; McSweeney, C.S.

    2005-01-01

    Many nucleic acid-based probe and PCR assays have been developed for the detection tracking of specific microbes within the rumen ecosystem. Conventional PCR assays detect PCR products at the end stage of each PCR reaction, where exponential amplification is no longer being achieved. This approach can result in different end product (amplicon) quantities being generated. In contrast, using quantitative, or real-time PCR, quantification of the amplicon is performed not at the end of the reaction, but rather during exponential amplification, where theoretically each cycle will result in a doubling of product being created. For real-time PCR, the cycle at which fluorescence is deemed to be detectable above the background during the exponential phase is termed the cycle threshold (Ct). The Ct values obtained are then used for quantitation, which will be discussed later

  8. Manufacturing real wages in Mexico

    Directory of Open Access Journals (Sweden)

    López V Antonia

    2006-01-01

    Full Text Available In this paper we analyse the recent evolution and determinants of real wages in Mexico?s manufacturing sector, using theories based on the assumption of imperfect competition both in the product and in the labour markets, especially wage-bargain theory, insider-outsider and mark-up models. We show evidence that the Mexican labour market does not behave as a traditional competitive market. The proposed explanation for this fact is that some workers benefit from advantages when compared with others, so that they can get a greater share of the proceedings of the productive process. Also, we find that changes in the degree of competition in the market for output influence the behaviour of real wages.

  9. Complex proofs of real theorems

    CERN Document Server

    Lax, Peter D

    2011-01-01

    Complex Proofs of Real Theorems is an extended meditation on Hadamard's famous dictum, "The shortest and best way between two truths of the real domain often passes through the imaginary one." Directed at an audience acquainted with analysis at the first year graduate level, it aims at illustrating how complex variables can be used to provide quick and efficient proofs of a wide variety of important results in such areas of analysis as approximation theory, operator theory, harmonic analysis, and complex dynamics. Topics discussed include weighted approximation on the line, Müntz's theorem, Toeplitz operators, Beurling's theorem on the invariant spaces of the shift operator, prediction theory, the Riesz convexity theorem, the Paley-Wiener theorem, the Titchmarsh convolution theorem, the Gleason-Kahane-Żelazko theorem, and the Fatou-Julia-Baker theorem. The discussion begins with the world's shortest proof of the fundamental theorem of algebra and concludes with Newman's almost effortless proof of the prime ...

  10. Real time psychrometric data collection

    International Nuclear Information System (INIS)

    McDaniel, K.H.

    1996-01-01

    Eight Mine Weather Stations (MWS) installed at the Waste Isolation Pilot Plant (WIPP) to monitor the underground ventilation system are helping to simulate real-time ventilation scenarios. Seasonal weather extremes can result in variations of Natural Ventilation Pressure (NVP) which can significantly effect the ventilation system. The eight MWS(s) (which previously collected and stored temperature, barometric pressure and relative humidity data for subsequent NVP calculations) were upgraded to provide continuous real-time data to the site wide Central monitoring System. This data can now be utilized by the ventilation engineer to create realtime ventilation simulations and trends which assist in the prediction and mitigation of NVP and psychrometric related events

  11. Percolation in real multiplex networks

    Science.gov (United States)

    Bianconi, Ginestra; Radicchi, Filippo

    2016-12-01

    We present an exact mathematical framework able to describe site-percolation transitions in real multiplex networks. Specifically, we consider the average percolation diagram valid over an infinite number of random configurations where nodes are present in the system with given probability. The approach relies on the locally treelike ansatz, so that it is expected to accurately reproduce the true percolation diagram of sparse multiplex networks with negligible number of short loops. The performance of our theory is tested in social, biological, and transportation multiplex graphs. When compared against previously introduced methods, we observe improvements in the prediction of the percolation diagrams in all networks analyzed. Results from our method confirm previous claims about the robustness of real multiplex networks, in the sense that the average connectedness of the system does not exhibit any significant abrupt change as its individual components are randomly destroyed.

  12. Real-time holographic endoscopy

    Science.gov (United States)

    Smigielski, Paul; Albe, Felix; Dischli, Bernard

    1992-08-01

    Some new experiments concerning holographic endoscopy are presented. The quantitative measurements of deformations of objects are obtained by the double-exposure and double- reference beam method, using either a cw-laser or a pulsed laser. Qualitative experiments using an argon laser with time-average holographic endoscopy are also presented. A video film on real-time endoscopic holographic interferometry was recorded with the help of a frequency-doubled YAG-laser working at 25 Hz for the first time.

  13. A behavioral characterization of the positive real and bounded real characteristic values in balancing

    NARCIS (Netherlands)

    Trentelman, H.L.

    In passivity preserving and bounded realness preserving model reduction by balanced truncation, an important role is played by the so-called positive real (PR) and bounded real (BR) characteristic values. Both for the positive real as well as the bounded real case, these values are defined in terms

  14. [Real time 3D echocardiography

    Science.gov (United States)

    Bauer, F.; Shiota, T.; Thomas, J. D.

    2001-01-01

    Three-dimensional representation of the heart is an old concern. Usually, 3D reconstruction of the cardiac mass is made by successive acquisition of 2D sections, the spatial localisation and orientation of which require complex guiding systems. More recently, the concept of volumetric acquisition has been introduced. A matricial emitter-receiver probe complex with parallel data processing provides instantaneous of a pyramidal 64 degrees x 64 degrees volume. The image is restituted in real time and is composed of 3 planes (planes B and C) which can be displaced in all spatial directions at any time during acquisition. The flexibility of this system of acquisition allows volume and mass measurement with greater accuracy and reproducibility, limiting inter-observer variability. Free navigation of the planes of investigation allows reconstruction for qualitative and quantitative analysis of valvular heart disease and other pathologies. Although real time 3D echocardiography is ready for clinical usage, some improvements are still necessary to improve its conviviality. Then real time 3D echocardiography could be the essential tool for understanding, diagnosis and management of patients.

  15. Sistemas de tiempo real y sistemas distribuidos de tiempo real

    OpenAIRE

    Pesado, Patricia Mabel; Ramón, Hugo Dionisio; Boracchia, Marcos; Pasini, Ariel C.; De Vito, María Cecilia; Osella Massa, Germán Leandro; Estrebou, César Armando

    2006-01-01

    El proyecto de investigación y desarrollo en Sistemas de Software Distribuido, abarca aspectos que van desde los fundamentos del desarrollo (Técnicas de Ingeniería de Requerimientos, Metodologías de Gestión y Desarrollo de Proyectos, Técnicas de Planificación, Métricas, Normas de Calidad, Web-Systems) hasta la concepción de aplicaciones específicas orientadas a los procesos industriales (Sistemas de Planeamiento de Producción, Control Industrial en tiempo real), procesos de E-government (Voto...

  16. Getting Real Results with Ohio State University Extension’s Real Money. Real World. Program

    Directory of Open Access Journals (Sweden)

    Theresa M. Ferrari

    2010-06-01

    Full Text Available Youth development organizations have a unique opportunity to offer programs that help young people develop financial skills they need to become successful adults. This article describes Ohio State University Extension’s Real Money. Real World. (RMRW and the systematic approach used to evaluate its effectiveness. The RMRW curriculum includes an active, hands-on experience that gives young people the opportunity to make lifestyle and budget choices similar to those they will make as adults. The realistic simulation creates a teachable moment. The outcomes of the statewide evaluation clearly indicate the curriculum accomplishes its goals of raising awareness, changing attitudes, and motivating students to plan for behavior changes concerning financial management, education, and career choices. The article concludes with a discussion of the organizational outcomes of conducting the evaluation.

  17. Scalable Real-Time Negotiation Toolkit

    National Research Council Canada - National Science Library

    Lesser, Victor

    2004-01-01

    ... to implement an adaptive distributed sensor network. These activities involved the development of a distributed soft, real-time heuristic resource allocation protocol, the development of a domain-independent soft, real time agent architecture...

  18. The real time rolling shutter

    OpenAIRE

    Monaghan, David; O'Connor, Noel E.; Cleary, Anne; Connolly, Denis

    2015-01-01

    From an early age children are often told either, you are creative you should do art but stay away from science and maths. Or that you are mathematical you should do science but you're not that creative. Compounding this there also exist some traditional barriers of artistic rhetoric that say, "don't touch, don't think and don't be creative, we've already done that for you, you can just look...". The Real Time Rolling Shutter is part of a collaborative Art/Science partnership whose core tenet...

  19. Multidimensional real analysis I differentiation

    CERN Document Server

    Duistermaat, J J; van Braam Houckgeest, J P

    2004-01-01

    Part one of the authors' comprehensive and innovative work on multidimensional real analysis. This book is based on extensive teaching experience at Utrecht University and gives a thorough account of differential analysis in multidimensional Euclidean space. It is an ideal preparation for students who wish to go on to more advanced study. The notation is carefully organized and all proofs are clean, complete and rigorous. The authors have taken care to pay proper attention to all aspects of the theory. In many respects this book presents an original treatment of the subject and it contains man

  20. China; Sources of Real Exchange Rate Fluctuations

    OpenAIRE

    Tao Wang

    2004-01-01

    This paper reviews the evolution of China's real effective exchange rate between 1980 and 2002, and uses a structural vector autoregression model to study the relative importance of different types of macroeconomic shocks for fluctuations in the real exchange rate. The structural decomposition shows that relative real demand and supply shocks account for most of the variations in real exchange rate changes during the estimation period. The paper also finds that supply shocks are as important ...

  1. Texas Real Estate Curriculum Workshop Summary Report.

    Science.gov (United States)

    Lyon, Robert

    The Texas Real Estate Research Center-Texas Education Agency (TRERC-TEA) curriculum workshop was attended by over 40 participants representing 26 Texas community colleges. These participants divided into eight small groups by real estate specialty area and developed curriculum outlines and learning objectives for the following real estate courses:…

  2. Hard Real-Time Networking on Firewire

    NARCIS (Netherlands)

    Zhang, Yuchen; Orlic, Bojan; Visser, Peter; Broenink, Jan

    2005-01-01

    This paper investigates the possibility of using standard, low-cost, widely used FireWire as a new generation fieldbus medium for real-time distributed control applications. A real-time software subsys- tem, RT-FireWire was designed that can, in combination with Linux-based real-time operating

  3. Modular specification of real-time systems

    DEFF Research Database (Denmark)

    Inal, Recep

    1994-01-01

    Duration Calculus, a real-time interval logic, has been embedded in the Z specification language to provide a notation for real-time systems that combines the modularisation and abstraction facilities of Z with a logic suitable for reasoning about real-time properties. In this article the notation...

  4. 15 CFR 806.8 - Real estate.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Real estate. 806.8 Section 806.8 Commerce and Foreign Trade Regulations Relating to Commerce and Foreign Trade (Continued) BUREAU OF ECONOMIC ANALYSIS, DEPARTMENT OF COMMERCE DIRECT INVESTMENT SURVEYS § 806.8 Real estate. Residential real...

  5. Real time analysis under EDS

    International Nuclear Information System (INIS)

    Schneberk, D.

    1985-07-01

    This paper describes the analysis component of the Enrichment Diagnostic System (EDS) developed for the Atomic Vapor Laser Isotope Separation Program (AVLIS) at Lawrence Livermore National Laboratory (LLNL). Four different types of analysis are performed on data acquired through EDS: (1) absorption spectroscopy on laser-generated spectral lines, (2) mass spectrometer analysis, (3) general purpose waveform analysis, and (4) separation performance calculations. The information produced from this data includes: measures of particle density and velocity, partial pressures of residual gases, and overall measures of isotope enrichment. The analysis component supports a variety of real-time modeling tasks, a means for broadcasting data to other nodes, and a great degree of flexibility for tailoring computations to the exact needs of the process. A particular data base structure and program flow is common to all types of analysis. Key elements of the analysis component are: (1) a fast access data base which can configure all types of analysis, (2) a selected set of analysis routines, (3) a general purpose data manipulation and graphics package for the results of real time analysis. Each of these components are described with an emphasis upon how each contributes to overall system capability. 3 figs

  6. A real time monitoring system

    International Nuclear Information System (INIS)

    Fontanini, Horacio; Galdoz, Erwin

    1989-01-01

    A real time monitoring system is described. It was initially developed to be used as a man-machine interface between a basic principles simulator of the Embalse Nuclear Power Plant and the operators. This simulator is under construction at the Bariloche Atomic Center's Process Control Division. Due to great design flexibility, this system can also be used in real plants. The system is designed to be run on a PC XT or AT personal computer with high resolution graphics capabilities. Three interrelated programs compose the system: 1) Graphics Editor, to build static image to be used as a reference frame where to show dynamically updated data. 2) Data acquisition and storage module. It is a memory resident module to acquire and store data in background. Data can be acquired and stored without interference with the operating system, via serial port or through analog-to-digital converter attached to the personal computer. 3) Display module. It shows the acquired data according to commands received from configuration files prepared by the operator. (Author) [es

  7. Real Time Pricing and the Real Live Firm

    Energy Technology Data Exchange (ETDEWEB)

    Moezzi, Mithra; Goldman, Charles; Sezgen, Osman; Bharvirkar, Ranjit; Hopper, Nicole

    2004-05-26

    Energy economists have long argued the benefits of real time pricing (RTP) of electricity. Their basis for modeling customers response to short-term fluctuations in electricity prices are based on theories of rational firm behavior, where management strives to minimize operating costs and optimize profit, and labor, capital and energy are potential substitutes in the firm's production function. How well do private firms and public sector institutions operating conditions, knowledge structures, decision-making practices, and external relationships comport with these assumptions and how might this impact price response? We discuss these issues on the basis of interviews with 29 large (over 2 MW) industrial, commercial, and institutional customers in the Niagara Mohawk Power Corporation service territory that have faced day-ahead electricity market prices since 1998. We look at stories interviewees told about why and how they respond to RTP, why some customers report that they can't, and why even if they can, they don't. Some firms respond as theorized, and we describe their load curtailment strategies. About half of our interviewees reported that they were unable to either shift or forego electricity consumption even when prices are high ($0.50/kWh). Reasons customers gave for why they weren't price-responsive include implicit value placed on reliability, pricing structures, lack of flexibility in adjusting production inputs, just-in-time practices, perceived barriers to onsite generation, and insufficient time. We draw these observations into a framework that could help refine economic theory of dynamic pricing by providing real-world descriptions of how firms behave and why.

  8. Introduction to Real Analysis An Educational Approach

    CERN Document Server

    Bauldry, William C

    2011-01-01

    An accessible introduction to real analysis and its connection to elementary calculus Bridging the gap between the development and history of real analysis, Introduction to Real Analysis: An Educational Approach presents a comprehensive introduction to real analysis while also offering a survey of the field. With its balance of historical background, key calculus methods, and hands-on applications, this book provides readers with a solid foundation and fundamental understanding of real analysis. The book begins with an outline of basic calculus, including a close examination of problems illust

  9. Autonomous Real Time Requirements Tracing

    Science.gov (United States)

    Plattsmier, George; Stetson, Howard

    2014-01-01

    One of the more challenging aspects of software development is the ability to verify and validate the functional software requirements dictated by the Software Requirements Specification (SRS) and the Software Detail Design (SDD). Insuring the software has achieved the intended requirements is the responsibility of the Software Quality team and the Software Test team. The utilization of Timeliner-TLX(sup TM) Auto- Procedures for relocating ground operations positions to ISS automated on-board operations has begun the transition that would be required for manned deep space missions with minimal crew requirements. This transition also moves the auto-procedures from the procedure realm into the flight software arena and as such the operational requirements and testing will be more structured and rigorous. The autoprocedures would be required to meet NASA software standards as specified in the Software Safety Standard (NASASTD- 8719), the Software Engineering Requirements (NPR 7150), the Software Assurance Standard (NASA-STD-8739) and also the Human Rating Requirements (NPR-8705). The Autonomous Fluid Transfer System (AFTS) test-bed utilizes the Timeliner-TLX(sup TM) Language for development of autonomous command and control software. The Timeliner-TLX(sup TM) system has the unique feature of providing the current line of the statement in execution during real-time execution of the software. The feature of execution line number internal reporting unlocks the capability of monitoring the execution autonomously by use of a companion Timeliner-TLX(sup TM) sequence as the line number reporting is embedded inside the Timeliner-TLX(sup TM) execution engine. This negates I/O processing of this type data as the line number status of executing sequences is built-in as a function reference. This paper will outline the design and capabilities of the AFTS Autonomous Requirements Tracker, which traces and logs SRS requirements as they are being met during real-time execution of the

  10. On real structures on rigid surfaces

    International Nuclear Information System (INIS)

    Kulikov, Vik S; Kharlamov, V M

    2002-01-01

    We construct examples of rigid surfaces (that is, surfaces whose deformation class consists of a unique surface) with a particular behaviour with respect to real structures. In one example the surface has no real structure. In another it has a unique real structure, which is not maximal with respect to the Smith-Thom inequality. These examples give negative answers to the following problems: the existence of real surfaces in each deformation class of complex surfaces, and the existence of maximal real surfaces in every complex deformation class that contains real surfaces. Moreover, we prove that there are no real surfaces among surfaces of general type with p g =q=0 and K 2 =9. These surfaces also provide new counterexamples to the 'Dif = Def' problem

  11. On real structures on rigid surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Kulikov, Vik S [Steklov Mathematical Institute, Russian Academy of Sciences (Russian Federation); Kharlamov, V M [Institut de Recherche Matematique Avanee Universite Louis Pasteur et CNRS 7 rue Rene Descartes (France)

    2002-02-28

    We construct examples of rigid surfaces (that is, surfaces whose deformation class consists of a unique surface) with a particular behaviour with respect to real structures. In one example the surface has no real structure. In another it has a unique real structure, which is not maximal with respect to the Smith-Thom inequality. These examples give negative answers to the following problems: the existence of real surfaces in each deformation class of complex surfaces, and the existence of maximal real surfaces in every complex deformation class that contains real surfaces. Moreover, we prove that there are no real surfaces among surfaces of general type with p{sub g}=q=0 and K{sup 2}=9. These surfaces also provide new counterexamples to the 'Dif = Def' problem.

  12. Towards phronetic knowledge for strategic planning in corporate real estate management: A real options approach

    NARCIS (Netherlands)

    van Reedt Dortland, Maartje; Voordijk, Johannes T.; Dewulf, Geert P.M.R.

    2014-01-01

    Purpose – The objective of this paper is to provide insights about the potential of real option thinking for corporate real estate management (CREM) from the owner-user perspective. A promising approach to classifying and evaluating flexibility in real estate is the real options approach. Most

  13. SOFC Operation with Real Biogas

    DEFF Research Database (Denmark)

    Hagen, Anke; Winiwarter, Anna; Langnickel, Hendrik

    2017-01-01

    Biogas is a valuable energy source and will be available in future in systems relying on renewables. It is an attractive fuel for solid oxide fuel cells (SOFC), which are able to utilize the carbon contained in the biogas and which produce electricity with high efficiency. In the current paper......, state‐of‐the‐art SOFCs were studied regarding performance and durability in relation to biogas as fuel and considering important contaminants, specifically sulfur. First, the catalytic behavior in relevant synthetic biogas mixtures was studied and the potential of dry reforming was demonstrated....... Successful long term operation of an SOFC under both, conditions of steam and dry reforming, i.e., addition of steam or CO2 to avoid carbon formation was shown. For the steam reforming case a remarkable period of 3,500 h, hereof 3,000 h in the presence of H2S was achieved. Finally, a real biogas from...

  14. Operation of ULCS - real life

    Directory of Open Access Journals (Sweden)

    Jasna Prpić-Oršić

    2014-12-01

    Full Text Available In this paper the real life operation of ULCS (Ultra Large Container Ships is presented from the point of view of shipmasters. The paper provides interpretation of results of questionnaire filled by masters of large container ships during Tools for Ultra Large Container Ships (TULC EUI FP7 project. This is done in a way that results of questionnaire are further reviewed and commented by experienced master of ULCS. Following phenomena are subject of questionnaire and further discussed in the paper: parametric rolling, slamming, whipping, springing, green water and rogue waves. Special attention is given to the definition of rough sea states as well as to measures that ship masters take to avoid them as well as to the manoeuvring in heavy seas. The role of the wave forecast and weather routing software is also discussed.

  15. Real Estate Development at Landslides

    Directory of Open Access Journals (Sweden)

    Hakan Kaya

    2015-03-01

    Full Text Available The desire to grow and develop at a fast pace without regard for scientific conditions is an obsession, particularly of developing countries like Turkey. However, any development achieved in ignorance of the scientific process and sustainability leads to higher costs as well as serious losses in terms of human and other life. Our area of study is one of the best examples of the negative effects of this type of development. The area under study covers the landslide sites located on the southwest of Istanbul (the Büyükçekmece, Beylikdüzü, Avcılar and Esenyurt districts which is the largest city in Turkey. In this study, we tried to probe into the real estate development process of the landslide sites, the measures taken or failed to be taken in this process, the humanitarian and economic conditions involved and the things required to be done.

  16. Mathematics and the real world

    Directory of Open Access Journals (Sweden)

    D.F.M. Strauss

    2000-03-01

    Full Text Available In this article the initial discussion of the untenability of the distinction between “pure” and “applied" mathematics is followed by looking at alternative approaches regarding the relationship between mathematics and the “real world” - with intuitionism and Platonism representing the two opposite positions. The notions of infinity as well as the totality character of spatial continuity (and its implied infinite divisibility turned out to occupy a central position in this context. In the final section brief attention is given - against the background of some perspectives on the history of mathematics - to an alternative approach in which both the uniqueness and the mutual irreducibility of number and space are conjectured.

  17. The effects of real exchange rate misalignment and real exchange volatility on exports

    OpenAIRE

    Diallo, Ibrahima Amadou

    2011-01-01

    This paper uses panel data cointegration techniques to study the impacts of real exchange rate misalignment and real exchange rate volatility on total exports for a panel of 42 developing countries from 1975 to 2004. The results show that both real exchange rate misalignment and real exchange rate volatility affect negatively exports. The results also illustrate that real exchange rate volatility is more harmful to exports than misalignment. These outcomes are corroborated by estimations on s...

  18. Dalla crisi finanziaria alla crisi reale. ( Financial and real crisis

    Directory of Open Access Journals (Sweden)

    Carlo D'Adda

    2010-03-01

    Full Text Available  The financial crisis of 2008 is put in relation with two bubbles, financial and housing. Easy credit is at the origin of both bubbles. Risky bonds were issued to mobilize mortgages originated in the housing market, and bad bonds entered a fantastic number of institutional and private portfolios all over the world without any perception of the their risk. Unfortunately, bank credit to speculators was abundant and fed the final growth of the bubbles. When fears started to spread, the fall was immediate and expectations impaired very rapidly. The main aggregate demand components were severely curtailed and production fell as well. This is the crisis of the real economy. Fortunately, as opposed to what happened in 1929, the interventions of central banks and governments have been of an unprecedented size. The bail out of insolvent banks in particular has been providential. The exit from the current crisis, however, will surely be slow.  JEL: E44, G01, G10

  19. VERSE - Virtual Equivalent Real-time Simulation

    Science.gov (United States)

    Zheng, Yang; Martin, Bryan J.; Villaume, Nathaniel

    2005-01-01

    Distributed real-time simulations provide important timing validation and hardware in the- loop results for the spacecraft flight software development cycle. Occasionally, the need for higher fidelity modeling and more comprehensive debugging capabilities - combined with a limited amount of computational resources - calls for a non real-time simulation environment that mimics the real-time environment. By creating a non real-time environment that accommodates simulations and flight software designed for a multi-CPU real-time system, we can save development time, cut mission costs, and reduce the likelihood of errors. This paper presents such a solution: Virtual Equivalent Real-time Simulation Environment (VERSE). VERSE turns the real-time operating system RTAI (Real-time Application Interface) into an event driven simulator that runs in virtual real time. Designed to keep the original RTAI architecture as intact as possible, and therefore inheriting RTAI's many capabilities, VERSE was implemented with remarkably little change to the RTAI source code. This small footprint together with use of the same API allows users to easily run the same application in both real-time and virtual time environments. VERSE has been used to build a workstation testbed for NASA's Space Interferometry Mission (SIM PlanetQuest) instrument flight software. With its flexible simulation controls and inexpensive setup and replication costs, VERSE will become an invaluable tool in future mission development.

  20. O direito real de Kant Kant's real right

    Directory of Open Access Journals (Sweden)

    Aylton Barbieri Durão

    2010-01-01

    Full Text Available No direito real, Kant investiga a propriedade privada de uma substância (o solo e os objetos localizados nele. No estado de natureza, somente ocorre a posse física ou empírica de um objeto externo, a partir do postulado jurídico da razão prática como uma lei permissiva, pois, do contrário, as coisas utilizáveis seriam em-si ou res nullius, mas a posse jurídica ou inteligível depende da posse comum originária do solo (que não se confunde com o comunismo primitivo, para evitar que a propriedade seja uma relação entre pessoas e coisas, como acontece na teoria do trabalho, porque todo direito exige um dever correspondente. Todavia, coisas não podem ter deveres com relação a pessoas, condição seguida da vontade unilateral do primeiro ocupante de querer o objeto e do advento de uma vontade unificada a priori do provo, que só se torna efetiva no estado civil, a única capaz de gerar uma obrigação recíproca entre todos; por isso, a posse inteligível somente é possível no estado civil, embora a posse empírica do estado de natureza tenha a presunção de tornar-se jurídica, quando ocorrer a entrada no estado jurídico e vale por comparação na espera e preparação daquele estado.In real right, Kant investigates the private property of a substance (the soil and the objects on it. In the state of nature the physical or empirical possession of an external object only occurs based on the juridical postulate of the practical reason as a permissive law; otherwise, usable things would be in themselves, or res nullius, but the juridical or intelligible possession depends on the common possession which originates from the soil (and cannot be confounded with primitive communism, to avoid the property to be a relation among people and things, such as what happens in the work theory, because all rights demand a correlated duty, but things cannot have duties towards people, followed by the first occupant's unilateral will to want the

  1. New Schemes for Positive Real Truncation

    Directory of Open Access Journals (Sweden)

    Kari Unneland

    2007-07-01

    Full Text Available Model reduction, based on balanced truncation, of stable and of positive real systems are considered. An overview over some of the already existing techniques are given: Lyapunov balancing and stochastic balancing, which includes Riccati balancing. A novel scheme for positive real balanced truncation is then proposed, which is a combination of the already existing Lyapunov balancing and Riccati balancing. Using Riccati balancing, the solution of two Riccati equations are needed to obtain positive real reduced order systems. For the suggested method, only one Lyapunov equation and one Riccati equation are solved in order to obtain positive real reduced order systems, which is less computationally demanding. Further it is shown, that in order to get positive real reduced order systems, only one Riccati equation needs to be solved. Finally, this is used to obtain positive real frequency weighted balanced truncation.

  2. Mobile real time radiography system

    Energy Technology Data Exchange (ETDEWEB)

    Vigil, J.; Taggart, D.; Betts, S. [Los Alamos National Lab., NM (United States)] [and others

    1997-11-01

    A 450-keV Mobile Real Time Radiography (RTR) System was delivered to Los Alamos National Laboratory (LANL) in January 1996. It was purchased to inspect containers of radioactive waste produced at (LANL). Since its delivery it has been used to radiograph more than 600 drums of radioactive waste at various LANL sites. It has the capability of inspecting waste containers of various sizes from <1-gal. buckets up to standard waste boxes (SWB, dimensions 54.5 in. x 71 in. x 37 in.). It has three independent x-ray acquisition formats. The primary system used is a 12- in. image intensifier, the second is a 36-in. linear diode array (LDA) and the last is an open system. It is fully self contained with on board generator, HVAC, and a fire suppression system. It is on a 53-ft long x 8-ft. wide x 14-ft. high trailer that can be moved over any highway requiring only an easily obtainable overweight permit because it weights {approximately}38 tons. It was built to conform to industry standards for a cabinet system which does not require an exclusion zone. The fact that this unit is mobile has allowed us to operate where the waste is stored, rather than having to move the waste to a fixed facility.

  3. New Value: Keeping It Real

    Directory of Open Access Journals (Sweden)

    Peter Chamberlain

    2014-10-01

    Full Text Available Many parts of the world now swim in a sea of complex products that do not necessarily improve the overall quality of our lives. From cell phones to baby strollers, we have overloaded our designed environment with hyper-functional products that often leave us searching for simpler, straighter forward product offerings. In a product landscape that more often than not equates complexity with sophistication; our ever-increasingly complex modern society has allowed faux conveniences to outweigh the tangible realness of our experiences. The look and feel of products has often become complex and complicated – and this is often highlighted as a positive thing. We are less likely to encounter simple, intuitive, and usable products geared toward the individual. To avoid this trap, one would need to apply a filter that would govern the intake of certain products to only those that are seen as adding true value to our lives. It is necessary to appeal to people’s emotions, and carry cultural richness and authenticity back to the forefront while embracing the power of cur-rent and future technologies. Design has tremendous power and the versatility necessary to bring about this positive change.

  4. Mobile real time radiography system

    International Nuclear Information System (INIS)

    Vigil, J.; Taggart, D.; Betts, S.

    1997-01-01

    A 450-keV Mobile Real Time Radiography (RTR) System was delivered to Los Alamos National Laboratory (LANL) in January 1996. It was purchased to inspect containers of radioactive waste produced at (LANL). Since its delivery it has been used to radiograph more than 600 drums of radioactive waste at various LANL sites. It has the capability of inspecting waste containers of various sizes from <1-gal. buckets up to standard waste boxes (SWB, dimensions 54.5 in. x 71 in. x 37 in.). It has three independent x-ray acquisition formats. The primary system used is a 12- in. image intensifier, the second is a 36-in. linear diode array (LDA) and the last is an open system. It is fully self contained with on board generator, HVAC, and a fire suppression system. It is on a 53-ft long x 8-ft. wide x 14-ft. high trailer that can be moved over any highway requiring only an easily obtainable overweight permit because it weights ∼38 tons. It was built to conform to industry standards for a cabinet system which does not require an exclusion zone. The fact that this unit is mobile has allowed us to operate where the waste is stored, rather than having to move the waste to a fixed facility

  5. Real time 3D photometry

    Science.gov (United States)

    Fernandez-Balbuena, A. A.; Vazquez-Molini, D.; García-Botella, A.; Romo, J.; Serrano, Ana

    2017-09-01

    The photometry and radiometry measurement is a well-developed field. The necessity of measuring optical systems performance involves the use of several techniques like Gonio-photometry. The Gonio photometers are a precise measurement tool that is used in the lighting area like office, luminaire head car lighting, concentrator /collimator measurement and all the designed and fabricated optical systems that works with light. There is one disadvantage in this kind of measurements that obtain the intensity polar curves and the total flux of the optical system. In the industry, there are good Gonio photometers that are precise and reliable but they are very expensive and the measurement time is long. In industry the cost can be of minor importance but measuring time that is around 30 minutes is of major importance due to trained staff cost. We have designed a system to measure photometry in real time; it consists in a curved screen to get a huge measurement angle and a CCD. The system to be measured projects light onto the screen and the CCD records a video of the screen obtaining an image of the projected profile. A complex calibration permits to trace screen data (x,y,z) to intensity polar curve (I,αγ). This intensity is obtained in candels (cd) with an image + processing time below one second.

  6. Space Weather and Real-Time Monitoring

    Directory of Open Access Journals (Sweden)

    S Watari

    2009-04-01

    Full Text Available Recent advance of information and communications technology enables to collect a large amount of ground-based and space-based observation data in real-time. The real-time data realize nowcast of space weather. This paper reports a history of space weather by the International Space Environment Service (ISES in association with the International Geophysical Year (IGY and importance of real-time monitoring in space weather.

  7. Listing Specialization and Residential Real Estate Licensee

    OpenAIRE

    Leonard V. Zumpano; Ken Johnson; Randy I. Anderson

    2007-01-01

    Earlier research has found that specialization by real estate agents creates economies of scope for real estate firms. So far, however, no research has addressed this issue at the agent level. The question this research seeks to answer is whether specialization in one side of the real estate transaction increases agent income. The most important finding is that specialization has an asymmetric impact on earnings. Specializing in listings positively enhances agent income. In contrast, speciali...

  8. Archtecture of distributed real-time systems

    OpenAIRE

    Wing Leung, Cheuk

    2013-01-01

    CRAFTERS (Constraint and Application Driven Framework for Tailoring Embedded Real-time System) project aims to address the problem of uncertainty and heterogeneity in a distributed system by providing seamless, portable connectivity and middleware. This thesis contributes to the project by investigating the techniques that can be used in a distributed real-time embedded system. The conclusion is that, there is a list of specifications to be meet in order to provide a transparent and real-time...

  9. Equivalences of real submanifolds in complex space.

    OpenAIRE

    ZAITSEV, DMITRI

    2001-01-01

    PUBLISHED We show that for any real-analytic submanifold M in CN there is a proper real-analytic subvariety V contained in M such that for any p ? M \\ V , any real-analytic submanifold M? in CN, and any p? ? M?, the germs of the submanifolds M and M? at p and p? respectively are formally equivalent if and only if they are biholomorphically equivalent. More general results for k-equivalences are also stated and proved.

  10. Identifying chiral bands in real nuclei

    International Nuclear Information System (INIS)

    Shirinda, O.; Lawrie, E.A.

    2012-01-01

    The application of the presently used fingerprints of chiral bands (originally derived for strongly broken chirality) is investigated for real chiral systems. In particular the chiral fingerprints concerning the B(M1) staggering patterns and the energy staggering are studied. It is found that both fingerprints show considerable changes for real chiral systems, a behaviour that creates a significant risk for misinterpretation of the experimental data and can lead to a failure to identify real chiral systems. (orig.)

  11. Technical life cycle of real estates

    OpenAIRE

    Taina Koskelo

    2001-01-01

    Real estate business is developing fast. Development needs are challenging because of interdiciplinariness and diverseness of the branch. The main mission of real estate business is to provide premises for its customers. Designers are planning the buildings, contractors are building them and owners are supplying premises for users. During the use the real estate market needs different kinds of facilitating services directed to users or owner of buildings. Facilities Management services (FM) c...

  12. Research Directions in Real-Time Systems.

    Science.gov (United States)

    1996-09-01

    This report summarizes a survey of published research in real time systems . Material is presented that provides an overview of the topic, focusing on...communications protocols and scheduling techniques. It is noted that real - time systems deserve special attention separate from other areas because of...formal tools for design and analysis of real - time systems . The early work on applications as well as notable theoretical advances are summarized

  13. A Real-Time Systems Symposium Preprint.

    Science.gov (United States)

    1983-09-01

    Real - Time Systems Symposium Preprint Interim Tech...estimate of the occurence of the error. Unclassii ledSECUqITY CLASSIF’ICA T" NO MI*IA If’ inDI /’rrd erter for~~ble. ’Corrputnqg A REAL - TIME SYSTEMS SYMPOSIUM...ABSTRACT This technical report contains a preprint of a paper accepted for presentation at the REAL - TIME SYSTEMS SYMPOSIUM, Arlington,

  14. Inventory Investment and the Real Interest Rate

    OpenAIRE

    Junayed, Sadaquat; Khan, Hashmat

    2009-01-01

    The relationship between inventory investment and the real interest rate has been difficult to assess empirically. Recent work has proposed a linear-quadratic inventory model with time-varying discount factor to identify the effects of the real interest rate on inventory investment. The authors show that this framework does not separately identify the effects of real interest rate on inventory investment from variables that determine the expected marginal cost of production. In other words, t...

  15. Hábitos de consumo de productos apícolas en un colectivo de ancianos

    OpenAIRE

    Orzáez Villanueva, Mª.T; De Frutos Prieto, A; Téllez González, M; Blázquez Abellán, G

    2002-01-01

    En este trabajo se presentan los resultados obtenidos de un estudio realizado, en distintos lugares de España, acerca de los hábitos de consumo de diferentes productos apícolas: miel, polen, jalea real y propóleos en personas de edad avanzada. El planteamiento de este trabajo se debe a que la miel es un alimento energético por excelencia, y además contribuye a superar muchas enfermedades, ejerciendo una acción positiva sobre el organismo, debido a su riqueza y variedad de componentes, que le ...

  16. Real space renormalization tecniques for disordered systems

    International Nuclear Information System (INIS)

    Anda, E.V.

    1984-01-01

    Real space renormalization techniques are applied to study different disordered systems, with an emphasis on the understanding of the electronic properties of amorphous matter, mainly semiconductors. (Authors) [pt

  17. Essays in real-time forecasting

    OpenAIRE

    Liebermann, Joelle

    2012-01-01

    This thesis contains three essays in the field of real-time econometrics, and more particularlyforecasting.The issue of using data as available in real-time to forecasters, policymakers or financialmarkets is an important one which has only recently been taken on board in the empiricalliterature. Data available and used in real-time are preliminary and differ from ex-postrevised data, and given that data revisions may be quite substantial, the use of latestavailable instead of real-time can s...

  18. Competent ownership in real estate business

    OpenAIRE

    Timo Sneck

    2001-01-01

    The real estate businessñproject Competent Ownership (Oskito)î focuses on the role of ownership within the real estate industry. Ownership acts as the core upon which , the competitive advantages of real estate industry are for the most based. The project studies specific real estate business issues, especially îentities of possessionî that are large enough to allow the development of specialised businesses. The project is of current interest as the next phase of growth of the Finnish informa...

  19. Research in Distributed Real-Time Systems

    Science.gov (United States)

    Mukkamala, R.

    1997-01-01

    This document summarizes the progress we have made on our study of issues concerning the schedulability of real-time systems. Our study has produced several results in the scalability issues of distributed real-time systems. In particular, we have used our techniques to resolve schedulability issues in distributed systems with end-to-end requirements. During the next year (1997-98), we propose to extend the current work to address the modeling and workload characterization issues in distributed real-time systems. In particular, we propose to investigate the effect of different workload models and component models on the design and the subsequent performance of distributed real-time systems.

  20. Real-time Pricing in Power Markets

    DEFF Research Database (Denmark)

    Boom, Anette; Schwenen, Sebastian

    We examine welfare e ects of real-time pricing in electricity markets. Before stochastic energy demand is known, competitive retailers contract with nal consumers who exogenously do not have real-time meters. After demand is realized, two electricity generators compete in a uniform price auction...... to satisfy demand from retailers acting on behalf of subscribed customers and from consumers with real-time meters. Increasing the number of consumers on real-time pricing does not always increase welfare since risk-averse consumers dislike uncertain and high prices arising through market power...

  1. Real-time Pricing in Power Markets

    DEFF Research Database (Denmark)

    Boom, Anette; Schwenen, Sebastian

    We examine welfare eects of real-time pricing in electricity markets. Before stochastic energy demand is known, competitive retailers contract with nal consumers who exogenously do not have real-time meters. After demand is realized, two electricity generators compete in a uniform price auction...... to satisfy demand from retailers acting on behalf of subscribed customers and from consumers with real-time meters. Increasing the number of consumers on real-time pricing does not always increase welfare since risk-averse consumers dislike uncertain and high prices arising through market power...

  2. Accounting costs of transactions in real estate

    DEFF Research Database (Denmark)

    Stubkjær, Erik

    2005-01-01

    in relating theoretical conceptualizations of transaction costs to national accounting and further to the identification and quantification of actions on units of real estate. The notion of satellite accounting of the System of National Accounts is applied to the segment of society concerned with changes......The costs of transactions in real estate is of importance for households, for investors, for statistical services, for governmental and international bodies concerned with the efficient delivery of basic state functions, as well as for research. The paper takes a multi-disciplinary approach...... in real estate. The paper ends up with an estimate of the cost of a major real property transaction in Denmark....

  3. Students Collecting Real time Data

    Science.gov (United States)

    Miller, P.

    2006-05-01

    Students Collecting Real-Time Data The Hawaiian Islands Humpback Whale National Marine Sanctuary has created opportunities for middle and high school students to become Student Researchers and to be involved in real-time marine data collection. It is important that we expose students to different fields of science and encourage them to enter scientific fields of study. The Humpback Whale Sanctuary has an education visitor center in Kihei, Maui. Located right on the beach, the site has become a living classroom facility. There is a traditional Hawaiian fishpond fronting the property. The fishpond wall is being restored, using traditional methods. The site has the incredible opportunity of incorporating Hawaiian cultural practices with scientific studies. The Sanctuary offers opportunities for students to get involved in monitoring and data collection studies. Invasive Seaweed Study: Students are collecting data on invasive seaweed for the University of Hawaii. They pull a large net through the shallow waters. Seaweed is sorted, identified and weighed. The invasive seaweeds are removed. The data is recorded and sent to UH. Remote controlled monitoring boats: The sanctuary has 6 boogie board sized remote controlled boats used to monitor reefs. Boats have a camera with lights on the underside. The boats have water quality monitoring devices and GPS units. The video from the underwater camera is transmitted via a wireless transmission. Students are able to monitor the fish, limu and invertebrate populations on the reef and collect water quality data via television monitors or computers. The boat can also pull a small plankton tow net. Data is being compiled into data bases. Artificial Reef Modules: The Sanctuary has a scientific permit from the state to build and deploy artificial reef modules. High school students are designing and building modules. These are deployed out in the Fishpond fronting the Sanctuary site and students are monitoring them on a weekly basis

  4. Real and virtual multidimensional solitons

    International Nuclear Information System (INIS)

    Boiti, M.; Martina, L.; Pashaev, O.K.; Pempinelli, F.

    1993-01-01

    Recently it has been shown that in two spatial and one temporal dimensions (2+1) there exist localized solitons. These coherent structures display a richer phenomenology than the one dimensional solitons. Different effects have been reported successively in a series of papers. Some of them are due to the fact that the soliton solution is structurally unstable with respect to special choices of the parameters. Also some quantum-like effects as the non conservation of the number of solitons have been discovered by using direct methods. This report is dedicated to the study of the origin and generality of these new effects in the context of the Spectral Transform (ST) theory. By choosing more general boundaries than those used in previous papers we derive an N 2 -soliton solution, which is parameterized by a point in a space of 4N(N+1) real parameters. Of these parameters 2N(N+2) are determined by the choice of the boundaries and fix the velocity and the possible location of the solitons in the plane at large times, while the remaining 2N govern the dynamics of the solitons during the interaction. The total mass of solitons is conserved but, in general, the mass of the single soliton is not preserved by the interaction. The extreme cases in which the masses of one or more solitons are zero at t = -∞ or/and t = +∞ are also allowed. We call these solitons with asymptotic zero masses and, consequently, with asymptotic zero amplitudes virtual solitons. The total momentum of solitons is not conserved because the boundaries act as external forces. Solitons can simulate inelastic scattering processes of quantum particles including creation and annihilation of particles

  5. Real issue with nuclear power

    International Nuclear Information System (INIS)

    Simpson, J.W.

    1976-01-01

    The voter referendums on nuclear power planned in some states can affect the energy supply and economic health of the public at large more than it affects the industry that provides nuclear power, the author states. He makes the point that those responsible for energy supplies in the U. S.--the President and all relevant Federal agencies, the majority of Congress, the national utility industry, major laboratories, universities and consulting firms, and other energy industries--all favor nuclear power. The complex U.S. energy situation is reviewed, and the hope of alternative energy sources, practice of energy conservation, and benefits of nuclear power are summarized. Specifically, the California Initiative and its three conditions which it says should dictate the future of nuclear power are reviewed. The author does not believe that the reasons that are usually given in opposing nuclear power are the real reasons. He states that ''it seems clear that the principal philosophy behind the initiatives is one of halting economic growth by striking at the energy source that would make that growth possible.'' Attention is called to the morality of nuclear power by asking where is the morality: in leaving future generations an insufficient amount of energy, limiting their abilities to solve the economic and employment problems; in squandering our finite supply of fossil fuels while ignoring nuclear fuels; in forcing the nation into further dependence on unpredictable foreign nations for its energy supply; in expecting other states to provide California with the energy that it does not want to generate itself; and in allowing an arbitrary limit on growth to be set by groups of political activists

  6. 12 CFR 541.21 - Nonresidential real estate.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Nonresidential real estate. 541.21 Section 541... REGULATIONS AFFECTING FEDERAL SAVINGS ASSOCIATIONS § 541.21 Nonresidential real estate. The terms nonresidential real estate or nonresidential real property mean real estate that is not residential real estate...

  7. An Analysis of the Real Estate Occupation.

    Science.gov (United States)

    Harestad, Clifford E.; And Others

    The general purpose of the occupational analysis is to provide workable, basic information dealing with the many and varied duties performed in the real estate occupation. It represents an accounting of what must be done, but not how the entire cycle of a residential sale is completed through the services of a real estate person and the…

  8. Real balance effects, timing, and equilibrium determination

    NARCIS (Netherlands)

    Stoltenberg, C.A.

    2012-01-01

    By assuming that money balances at the beginning instead of at the end of the period provide transaction services, standard results on nominal and real determinacy in monetary models are overturned. The key is that predetermined real money balances can be a state variable. Whereas the determination

  9. 44 CFR 13.31 - Real property.

    Science.gov (United States)

    2010-10-01

    ... original purchase to the fair market value of the property. However, in those situations where a grantee or... purchase of the real property to the current fair market value of the property. ... LOCAL GOVERNMENTS Post-Award Requirements Changes, Property, and Subawards § 13.31 Real property. (a...

  10. Real-time communication protocols: an overview

    NARCIS (Netherlands)

    Hanssen, F.T.Y.; Jansen, P.G.

    2003-01-01

    This paper describes several existing data link layer protocols that provide real-time capabilities on wired networks, focusing on token-ring and Carrier Sense Multiple Access based networks. Existing modifications to provide better real-time capabilities and performance are also described. Finally

  11. Commercial real estate analysis and investments

    NARCIS (Netherlands)

    Geltner, D.; Miller, N.; Clayton, J.; Eichholtz, P.M.A.

    2013-01-01

    The well-known and respected authorship team of Geltner and Miller bring you a new edition of what has become the undisputed and authoritative resource on commercial real estate investment. Streamlined and completely updated with expanded coverage of corporate and international real estate

  12. Towards exascale real-time RFI mitigation

    NARCIS (Netherlands)

    van Nieuwpoort, R.V.

    2016-01-01

    We describe the design and implementation of an extremely scalable real-time RFI mitigation method, based on the offline AOFlagger. All algorithms scale linearly in the number of samples. We describe how we implemented the flagger in the LOFAR real-time pipeline, on both CPUs and GPUs. Additionally,

  13. 22 CFR 226.32 - Real property.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Real property. 226.32 Section 226.32 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT ADMINISTRATION OF ASSISTANCE AWARDS TO U.S. NON-GOVERNMENTAL ORGANIZATIONS Post-award Requirements Property Standards § 226.32 Real property. (a) Unless the agreement...

  14. Reflections on "Real-World" Community Psychology

    Science.gov (United States)

    Wolff, Tom; Swift, Carolyn

    2008-01-01

    Reflections on the history of real-world (applied) community psychologists trace their participation in the field's official guild, the Society for Community Research and Action (SCRA), beginning with the Swampscott Conference in 1965 through the current date. Four benchmarks are examined. The issues these real-world psychologists bring to the…

  15. Learning from Dealing with Real World Problems

    Science.gov (United States)

    Akcay, Hakan

    2017-01-01

    The purpose of this article is to provide an example of using real world issues as tools for science teaching and learning. Using real world issues provides students with experiences in learning in problem-based environments and encourages them to apply their content knowledge to solving current and local problems.

  16. Real time refractive index measurement by ESPI

    International Nuclear Information System (INIS)

    Torroba, R.; Joenathan, C.

    1991-01-01

    In this paper a method to measure refractive index variations in real time is reported. A technique to introduce reference fringes in real time is discussed. Both the theoretical and experimental results are presented and an example with phase shifting is given. (author). 8 refs, 5 figs

  17. De toekomst van Real Time Intelligence

    NARCIS (Netherlands)

    Broek, J. van den; Berg, C.H. van den

    2013-01-01

    Al direct vanaf de start van de Nationale Politie is gewerkt aan het opzetten van tien real-time intelligence centra in Nederland. Van daaruit worden 24 uur per dag en zeven dagen in de week agenten op straat actief ondersteund met real-time informatie bij de melding waar ze op af gaan. In de visie

  18. The homogeneous geometries of real hyperbolic space

    DEFF Research Database (Denmark)

    Castrillón López, Marco; Gadea, Pedro Martínez; Swann, Andrew Francis

    We describe the holonomy algebras of all canonical connections of homogeneous structures on real hyperbolic spaces in all dimensions. The structural results obtained then lead to a determination of the types, in the sense of Tricerri and Vanhecke, of the corresponding homogeneous tensors. We use...... our analysis to show that the moduli space of homogeneous structures on real hyperbolic space has two connected components....

  19. Model Checking Real-Time Systems

    DEFF Research Database (Denmark)

    Bouyer, Patricia; Fahrenberg, Uli; Larsen, Kim Guldstrand

    2018-01-01

    This chapter surveys timed automata as a formalism for model checking real-time systems. We begin with introducing the model, as an extension of finite-state automata with real-valued variables for measuring time. We then present the main model-checking results in this framework, and give a hint...

  20. Heterogeneous Embedded Real-Time Systems Environment

    Science.gov (United States)

    2003-12-01

    AFRL-IF-RS-TR-2003-290 Final Technical Report December 2003 HETEROGENEOUS EMBEDDED REAL - TIME SYSTEMS ENVIRONMENT Integrated...HETEROGENEOUS EMBEDDED REAL - TIME SYSTEMS ENVIRONMENT 6. AUTHOR(S) Cosmo Castellano and James Graham 5. FUNDING NUMBERS C - F30602-97-C-0259

  1. Validation of RNAi by real time PCR

    DEFF Research Database (Denmark)

    Josefsen, Knud; Lee, Ying Chiu

    2011-01-01

    Real time PCR is the analytic tool of choice for quantification of gene expression, while RNAi is concerned with downregulation of gene expression. Together, they constitute a powerful approach in any loss of function studies of selective genes. We illustrate here the use of real time PCR to verify...

  2. Real time programming environment for Windows

    Energy Technology Data Exchange (ETDEWEB)

    LaBelle, D.R. [LaBelle (Dennis R.), Clifton Park, NY (United States)

    1998-04-01

    This document provides a description of the Real Time Programming Environment (RTProE). RTProE tools allow a programmer to create soft real time projects under general, multi-purpose operating systems. The basic features necessary for real time applications are provided by RTProE, leaving the programmer free to concentrate efforts on his specific project. The current version supports Microsoft Windows{trademark} 95 and NT. The tasks of real time synchronization and communication with other programs are handled by RTProE. RTProE includes a generic method for connecting a graphical user interface (GUI) to allow real time control and interaction with the programmer`s product. Topics covered in this paper include real time performance issues, portability, details of shared memory management, code scheduling, application control, Operating System specific concerns and the use of Computer Aided Software Engineering (CASE) tools. The development of RTProE is an important step in the expansion of the real time programming community. The financial costs associated with using the system are minimal. All source code for RTProE has been made publicly available. Any person with access to a personal computer, Windows 95 or NT, and C or FORTRAN compilers can quickly enter the world of real time modeling and simulation.

  3. CPR: A Real Lifesaver (For Kids)

    Science.gov (United States)

    ... First Aid & Safety Doctors & Hospitals Videos Recipes for Kids Kids site Sitio para niños How the Body Works ... English Español CPR: A Real Lifesaver KidsHealth / For Kids / CPR: A Real Lifesaver What's in this article? ...

  4. Storm real-time processing cookbook

    CERN Document Server

    Anderson, Quinton

    2013-01-01

    A Cookbook with plenty of practical recipes for different uses of Storm.If you are a Java developer with basic knowledge of real-time processing and would like to learn Storm to process unbounded streams of data in real time, then this book is for you.

  5. Multiprocessor scheduling for real-time systems

    CERN Document Server

    Baruah, Sanjoy; Buttazzo, Giorgio

    2015-01-01

    This book provides a comprehensive overview of both theoretical and pragmatic aspects of resource-allocation and scheduling in multiprocessor and multicore hard-real-time systems.  The authors derive new, abstract models of real-time tasks that capture accurately the salient features of real application systems that are to be implemented on multiprocessor platforms, and identify rules for mapping application systems onto the most appropriate models.  New run-time multiprocessor scheduling algorithms are presented, which are demonstrably better than those currently used, both in terms of run-time efficiency and tractability of off-line analysis.  Readers will benefit from a new design and analysis framework for multiprocessor real-time systems, which will translate into a significantly enhanced ability to provide formally verified, safety-critical real-time systems at a significantly lower cost.

  6. LabVIEW Real-Time

    CERN Multimedia

    CERN. Geneva; Flockhart, Ronald Bruce; Seppey, P

    2003-01-01

    With LabVIEW Real-Time, you can choose from a variety of RT Series hardware. Add a real-time data acquisition component into a larger measurement and automation system or create a single stand-alone real-time solution with data acquisition, signal conditioning, motion control, RS-232, GPIB instrumentation, and Ethernet connectivity. With the various hardware options, you can create a system to meet your precise needs today, while the modularity of the system means you can add to the solution as your system requirements grow. If you are interested in Reliable and Deterministic systems for Measurement and Automation, you will profit from this seminar. Agenda: Real-Time Overview LabVIEW RT Hardware Platforms - Linux on PXI Programming with LabVIEW RT Real-Time Operating Systems concepts Timing Applications Data Transfer

  7. Lagrangian solution of supersonic real gas flows

    International Nuclear Information System (INIS)

    Loh, Chingyuen; Liou, Mengsing

    1993-01-01

    This paper details the procedure of the real gas Riemann solution in the Lagrangian approach originally proposed by Loh and Hui for perfect gases. The extension to real gases is nontrivial and requires substantial development of an exact real-gas Riemann solver for the Lagrangian form of conservation laws. The first-order Gudonov scheme is enhanced for accuracy by adding limited anti-diffusive terms according to Sweby. Extensive calculations were made to test the accuracy and robustness of the present real gas Lagrangian approach, including complex wave interactions of different types. The accuracy for capturing 2D oblique waves and slip line is clearly demonstrated. In addition, we also show the real gas effect in a generic engine nozzle

  8. Real solutions to equations from geometry

    CERN Document Server

    Sottile, Frank

    2011-01-01

    Understanding, finding, or even deciding on the existence of real solutions to a system of equations is a difficult problem with many applications outside of mathematics. While it is hopeless to expect much in general, we know a surprising amount about these questions for systems which possess additional structure often coming from geometry. This book focuses on equations from toric varieties and Grassmannians. Not only is much known about these, but such equations are common in applications. There are three main themes: upper bounds on the number of real solutions, lower bounds on the number of real solutions, and geometric problems that can have all solutions be real. The book begins with an overview, giving background on real solutions to univariate polynomials and the geometry of sparse polynomial systems. The first half of the book concludes with fewnomial upper bounds and with lower bounds to sparse polynomial systems. The second half of the book begins by sampling some geometric problems for which all ...

  9. MARTe: A Multiplatform Real-Time Framework

    Science.gov (United States)

    Neto, André C.; Sartori, Filippo; Piccolo, Fabio; Vitelli, Riccardo; De Tommasi, Gianmaria; Zabeo, Luca; Barbalace, Antonio; Fernandes, Horacio; Valcarcel, Daniel F.; Batista, Antonio J. N.

    2010-04-01

    Development of real-time applications is usually associated with nonportable code targeted at specific real-time operating systems. The boundary between hardware drivers, system services, and user code is commonly not well defined, making the development in the target host significantly difficult. The Multithreaded Application Real-Time executor (MARTe) is a framework built over a multiplatform library that allows the execution of the same code in different operating systems. The framework provides the high-level interfaces with hardware, external configuration programs, and user interfaces, assuring at the same time hard real-time performances. End-users of the framework are required to define and implement algorithms inside a well-defined block of software, named Generic Application Module (GAM), that is executed by the real-time scheduler. Each GAM is reconfigurable with a set of predefined configuration meta-parameters and interchanges information using a set of data pipes that are provided as inputs and required as output. Using these connections, different GAMs can be chained either in series or parallel. GAMs can be developed and debugged in a non-real-time system and, only once the robustness of the code and correctness of the algorithm are verified, deployed to the real-time system. The software also supplies a large set of utilities that greatly ease the interaction and debugging of a running system. Among the most useful are a highly efficient real-time logger, HTTP introspection of real-time objects, and HTTP remote configuration. MARTe is currently being used to successfully drive the plasma vertical stabilization controller on the largest magnetic confinement fusion device in the world, with a control loop cycle of 50 ?s and a jitter under 1 ?s. In this particular project, MARTe is used with the Real-Time Application Interface (RTAI)/Linux operating system exploiting the new ?86 multicore processors technology.

  10. 75 FR 36271 - Real Estate Settlement Procedures Act (RESPA): Home Warranty Companies' Payments to Real Estate...

    Science.gov (United States)

    2010-06-25

    ... Estate Settlement Procedures Act (RESPA): Home Warranty Companies' Payments to Real Estate Brokers and... RESPA and HUD's implementing RESPA regulations, services performed by real estate brokers and agents as additional settlement services in a real estate transaction are compensable if the services are actual...

  11. Research of real-time communication software

    Science.gov (United States)

    Li, Maotang; Guo, Jingbo; Liu, Yuzhong; Li, Jiahong

    2003-11-01

    Real-time communication has been playing an increasingly important role in our work, life and ocean monitor. With the rapid progress of computer and communication technique as well as the miniaturization of communication system, it is needed to develop the adaptable and reliable real-time communication software in the ocean monitor system. This paper involves the real-time communication software research based on the point-to-point satellite intercommunication system. The object-oriented design method is adopted, which can transmit and receive video data and audio data as well as engineering data by satellite channel. In the real-time communication software, some software modules are developed, which can realize the point-to-point satellite intercommunication in the ocean monitor system. There are three advantages for the real-time communication software. One is that the real-time communication software increases the reliability of the point-to-point satellite intercommunication system working. Second is that some optional parameters are intercalated, which greatly increases the flexibility of the system working. Third is that some hardware is substituted by the real-time communication software, which not only decrease the expense of the system and promotes the miniaturization of communication system, but also aggrandizes the agility of the system.

  12. Making real-time reactive systems reliable

    Science.gov (United States)

    Marzullo, Keith; Wood, Mark

    1990-01-01

    A reactive system is characterized by a control program that interacts with an environment (or controlled program). The control program monitors the environment and reacts to significant events by sending commands to the environment. This structure is quite general. Not only are most embedded real time systems reactive systems, but so are monitoring and debugging systems and distributed application management systems. Since reactive systems are usually long running and may control physical equipment, fault tolerance is vital. The research tries to understand the principal issues of fault tolerance in real time reactive systems and to build tools that allow a programmer to design reliable, real time reactive systems. In order to make real time reactive systems reliable, several issues must be addressed: (1) How can a control program be built to tolerate failures of sensors and actuators. To achieve this, a methodology was developed for transforming a control program that references physical value into one that tolerates sensors that can fail and can return inaccurate values; (2) How can the real time reactive system be built to tolerate failures of the control program. Towards this goal, whether the techniques presented can be extended to real time reactive systems is investigated; and (3) How can the environment be specified in a way that is useful for writing a control program. Towards this goal, whether a system with real time constraints can be expressed as an equivalent system without such constraints is also investigated.

  13. Systems engineering real estate development projects

    Science.gov (United States)

    Gusakova, Elena; Titarenko, Boris; Stepanov, Vitaliy

    2017-10-01

    In recent years, real estate development has accumulated a wealth of experience in implementing major projects, which requires comprehension and systematization. The scientific instrument of system engineering is studied in the article and is substantively interpreted with reference to real estate development projects. The most perspective approaches and models are substantiated, allowing strategically to plan the life cycle of the project as a whole, and also to solve the engineering butt problems of the project. The relevance of further scientific studies of regularities and specifics of the life cycle of real estate development projects conducted at the Moscow State University of Economics and Management at the ISTA department is shown.

  14. Real time sensor for therapeutic radiation delivery

    International Nuclear Information System (INIS)

    Bliss, M.; Craig, R.A.; Reeder, P.L.

    1998-01-01

    The invention is a real time sensor for therapeutic radiation. A probe is placed in or near the patient that senses in real time the dose at the location of the probe. The strength of the dose is determined by either an insertion or an exit probe. The location is determined by a series of vertical and horizontal sensing elements that gives the operator a real time read out dose location relative to placement of the patient. The increased accuracy prevents serious tissue damage to the patient by preventing overdose or delivery of a dose to a wrong location within the body. 14 figs

  15. Real Estate Investments, Regulation, and Financial Intermediation

    OpenAIRE

    Heinrich, Michael

    2018-01-01

    Real estate as an asset class can deliver high risk-adjusted returns, which are also low-correlated to the returns of other asset classes, such as stocks and bonds. According to the literature, a well-diversified mixed-asset portfolio should therefore comprise between 10% and 30% of real estate. This holds true for large and medium-sized institutional investors, but also for small retail investors (private investors). However, direct real estate proves to be an unsuitable investment for the v...

  16. Set theoretical aspects of real analysis

    CERN Document Server

    Kharazishvili, Alexander B

    2014-01-01

    This book addresses a number of questions in real analysis and classical measure theory that are of a set-theoretic flavor. Accessible to graduate students, the beginning of the book presents introductory topics on real analysis and Lebesque measure theory. These topics highlight the boundary between fundamental concepts of measurability and non-measurability for point sets and functions. The remainder of the book deals with more specialized material on set-theoretical real analysis. Problems are included at the end of each chapter.

  17. On the thermodynamic description of real systems

    International Nuclear Information System (INIS)

    Bernardes, N.

    1984-01-01

    A new method of approach to the theory of the thermodynamic properties of real systems is proposed, to include interactions among the constituent particles of the system. The method consists in obtaining the entropy of a real system from the entropy of the corresponding ideal system by a translation in the internal energy and other relevant extensive variables. The usefulness of the method is displayed by application to the cases of: (i) real gases, and (ii) spin paramagnetism with interactions among spins. It is shown that this description corresponds to a generalization of the molecular field approximation. (Author) [pt

  18. Real time detecting system for turning force

    Energy Technology Data Exchange (ETDEWEB)

    Xiaobin, Yue [China Academy of Engineering Physics, Mianyang (China). Inst. of Machinery Manufacturing Technology

    2001-07-01

    How to get the real-time value of forces dropped on the tool in the course of processing by piezoelectric sensors is introduced. First, the analog signals of the cutting force were achieved by these sensors, amplified and transferred into digital signals by A/D transferring card. Then real-time software reads the information, put it into its own coordinate, drew the curve of forces, displayed it on the screen by the real time and saved it for the technicians to analyze the situation of the tool. So the cutting parameter can be optimized to improve surface quality of the pieces.

  19. Lagrangian solution of supersonic real gas flows

    Science.gov (United States)

    Loh, Ching-Yuen; Liou, Meng-Sing

    1993-01-01

    The present extention of a Lagrangian approach of the Riemann solution procedure, which was originally proposed for perfect gases, to real gases, is nontrivial and requires the development of an exact real-gas Riemann solver for the Lagrangian form of the conservation laws. Calculations including complex wave interactions of various types were conducted to test the accuracy and robustness of the approach. Attention is given to the case of 2D oblique waves' capture, where a slip line is clearly in evidence; the real gas effect is demonstrated in the case of a generic engine nozzle.

  20. The Cluster Enterprise of Real Property Business

    DEFF Research Database (Denmark)

    Stubkjær, Erik

    2008-01-01

    others. The paper regards the domain of real property transactions. Drawing on research of European scope, it analyzes the framework of business processes in order to facilitate adoption of service oriented architectures. The paper motivates the notion of a ‘cluster enterprise' and identifies further......In order to apply the potential of available web technology, business processes must be described in a coherent way across organizational boundaries. Business processes include geographical data in the context of constructions, as well as environmental affairs and real property transactions, among...... steps towards a standardization of real estate business....

  1. The multiple reals of workplace learning

    Directory of Open Access Journals (Sweden)

    Kerry Harman

    2014-04-01

    Full Text Available The multiple reals of workplace learning are explored in this paper. Drawing on a Foucauldian conceptualisation of power as distributed, relational and productive, networks that work to produce particular objects and subjects as seemingly natural and real are examined. This approach enables different reals of workplace learning to be traced. Data from a collaborative industry-university research project is used to illustrate the approach, with a focus on the intersecting practices of a group of professional developers and a group of workplace learning researchers. The notion of multiple reals holds promise for research on workplace learning as it moves beyond a view of reality as fixed and singular to a notion of reality as performed in and through a diversity of practices, including the practices of workplace learning researchers.

  2. Capital renewal as a real option

    NARCIS (Netherlands)

    Reindorp, M.J.; Fu, M.C.

    2011-01-01

    We consider the timing of replacement of obsolete subsystems within an extensive, complex infrastructure. Such replacement action, known as capital renewal, must balance uncertainty about future profitability against uncertainty about future renewal costs. Treating renewal investments as real

  3. Real Property Project Tracking System (RPPTS)

    Data.gov (United States)

    Department of Veterans Affairs — The Real Property Project Tracking System (RPPTS), formerly known as the Lease/Project Tracking (LEASE) database, contains information about lease and land projects...

  4. Modeling Real Exchange Rate Persistence in Chile

    Directory of Open Access Journals (Sweden)

    Leonardo Salazar

    2017-07-01

    Full Text Available The long and persistent swings in the real exchange rate have for a long time puzzled economists. Recent models built on imperfect knowledge economics seem to provide a theoretical explanation for this persistence. Empirical results, based on a cointegrated vector autoregressive (CVAR model, provide evidence of error-increasing behavior in prices and interest rates, which is consistent with the persistence observed in the data. The movements in the real exchange rate are compensated by movements in the interest rate spread, which restores the equilibrium in the product market when the real exchange rate moves away from its long-run benchmark value. Fluctuations in the copper price also explain the deviations of the real exchange rate from its long-run equilibrium value.

  5. Working with a Real Estate Developer.

    Science.gov (United States)

    Bell, Allen; Henderson, Mark

    2001-01-01

    Discusses outsourcing to an experienced real estate developer as a more efficient means of meeting school development goals on a strict time schedule. Advantages of outsourcing are covered as is advice on selecting the right development firm. (GR)

  6. Transformation of Real Spherical Harmonics under Rotations

    Science.gov (United States)

    Romanowski, Z.; Krukowski, St.; Jalbout, A. F.

    2008-08-01

    The algorithm rotating the real spherical harmonics is presented. The convenient and ready to use formulae for l = 0, 1, 2, 3 are listed. The rotation in R3 space is determined by the rotation axis and the rotation angle; the Euler angles are not used. The proposed algorithm consists of three steps. (i) Express the real spherical harmonics as the linear combination of canonical polynomials. (ii) Rotate the canonical polynomials. (iii) Express the rotated canonical polynomials as the linear combination of real spherical harmonics. Since the three step procedure can be treated as a superposition of rotations, the searched rotation matrix for real spherical harmonics is a product of three matrices. The explicit formulae of matrix elements are given for l = 0, 1, 2, 3, what corresponds to s, p, d, f atomic orbitals.

  7. Best Practices for Real Property Management

    Science.gov (United States)

    2016-04-21

    rehabilitations ; and other structures and facilities. Real property does not include personal property (weapons systems and other military equipment Repair To...sanitary landfills , sewage treatment, heat distribution lines, heat production plants Operations & Training Aviation runways and ramps, piers and

  8. Real space renormalization techniques for disordered systems

    International Nuclear Information System (INIS)

    Anda, E.V.

    1985-01-01

    Real Space renormalization techniques are applied to study different disordered systems, with an emphasis on the under-standing of the electronic properties of amorphous matter, mainly semiconductors. (author) [pt

  9. Studying Real-World Perceptual Expertise

    Directory of Open Access Journals (Sweden)

    Jianhong eShen

    2014-08-01

    Full Text Available Significant insights into visual cognition have come from studying real-world perceptual expertise. Many have previously reviewed empirical findings and theoretical developments from this work. Here we instead provide a brief perspective on approaches, considerations, and challenges to studying real-world perceptual expertise. We discuss factors like choosing to use real-world versus artificial object domains of expertise, selecting a target domain of real-world perceptual expertise, recruiting experts, evaluating their level of expertise, and experimentally testing experts in the lab and online. Throughout our perspective, we highlight expert birding (also called birdwatching as an example, as it has been used as a target domain for over two decades in the perceptual expertise literature.

  10. Universidades virtuales: ¿aprendizaje real?

    OpenAIRE

    Valenzuela González, Jaime R.

    2015-01-01

    1. Introducción; 2. Modalidades educativas; 3. Concepto y características de las universidades virtuales; 4. Un modelo de universidad virtual; 5. Universidades virtuales ¿aprendizaje real?; 6. Tensiones de las universidades virtuales; 7. Referencias

  11. Quantum search of a real unstructured database

    Science.gov (United States)

    Broda, Bogusław

    2016-02-01

    A simple circuit implementation of the oracle for Grover's quantum search of a real unstructured classical database is proposed. The oracle contains a kind of quantumly accessible classical memory, which stores the database.

  12. Coordinating Transit Transfers in Real Time

    Science.gov (United States)

    2016-05-06

    Transfers are a major source of travel time variability for transit passengers. Coordinating transfers between transit routes in real time can reduce passenger waiting times and travel time variability, but these benefits need to be contrasted with t...

  13. Real-Time Penetrating Particle Analyzer (PAN)

    Science.gov (United States)

    Wu, X.; Ambrosi, G.; Bertucci, B.

    2018-02-01

    The PAN can measure penetrating particles with great precision to study energetic particles, solar activities, and the origin and propagation of cosmic rays. The real-time monitoring of penetrating particles is crucial for deep space human travel.

  14. Positive real balancing for nonlinear systems

    NARCIS (Netherlands)

    Ionescu, Tudor C.; Scherpen, Jacquelien M.A.; Ciuprina, G; Ioan, D

    2007-01-01

    We extend the positive real balancing procedure for passive linear systems to the nonlinear systems case. We show that, just like in the linear case, model reduction based on this technique preserves passivity.

  15. Real Estate and the Asian Crisis

    OpenAIRE

    Quigley, John M.

    2002-01-01

    This paper suggests that activities in the real estate markets in Southeast and East Asian economies were an important contributing force to the financial crises of 1997 in the Asian economies. The analysis relies upon unpublished data reported contemporaneously by financial institutions and market watchers to document the extent of the imbalances in the real property market that were evident to informed observers at the time of the financial collapse. The analysis argues that a series of ref...

  16. Multiple Connections in RealXtend Architecture

    OpenAIRE

    Vatjus-Anttila, Jukka

    2012-01-01

    RealXtend is an open source virtual space platform implementing both client and server functionality. In the default implementation of realXtend, the client could only log in to one virtual space server at any given time. In this research an ability to make multiple simultaneous connections to virtual spaces was experimented. Focus of the research was on how to control multiple virtual spaces within the same client window from a technical point of view. This bachelor thesis presents metho...

  17. Franchise ownership redirection: real options perspective

    OpenAIRE

    Nugroho, Lukito Adi

    2016-01-01

    Background: For over 40 years, the franchise ownership redirection hypothesis has attracted the attention of many scholars. This study, differing from previous ones, proposes an alternative approach for this hypothesis using a real options framework with the extension of agency theory. Method: The real options model is built using the least square Monte Carlo method, where the franchisor's decision to franchise is perceived as a deferred investment while maintaining the right of future acquis...

  18. Scala for Real-Time Systems?

    DEFF Research Database (Denmark)

    Schoeberl, Martin

    2015-01-01

    Java served well as a general-purpose language. However, during its two decades of constant change it has gotten some weight and legacy in the language syntax and the libraries. Furthermore, Java's success for real-time systems is mediocre. Scala is a modern object-oriented and functional language...... with interesting new features. Although a new language, it executes on a Java virtual machine, reusing that technology. This paper explores Scala as language for future real-time systems....

  19. Perfect sequences over the real quaternions

    OpenAIRE

    Kuznetsov, Oleg

    2017-01-01

    In this Thesis, perfect sequences over the real quaternions are first considered. Definitions for the right and left periodic autocorrelation functions are given, and right and left perfect sequences introduced. It is shown that the right (left) perfection of any sequence implies the left (right) perfection, so concepts of right and left perfect sequences over the real quaternions are equivalent. Unitary transformations of the quaternion space ℍ are then considered. Using the equivalence of t...

  20. Flux Jacobian Matrices For Equilibrium Real Gases

    Science.gov (United States)

    Vinokur, Marcel

    1990-01-01

    Improved formulation includes generalized Roe average and extension to three dimensions. Flux Jacobian matrices derived for use in numerical solutions of conservation-law differential equations of inviscid flows of ideal gases extended to real gases. Real-gas formulation of these matrices retains simplifying assumptions of thermodynamic and chemical equilibrium, but adds effects of vibrational excitation, dissociation, and ionization of gas molecules via general equation of state.

  1. Real variables with basic metric space topology

    CERN Document Server

    Ash, Robert B

    2009-01-01

    Designed for a first course in real variables, this text presents the fundamentals for more advanced mathematical work, particularly in the areas of complex variables, measure theory, differential equations, functional analysis, and probability. Geared toward advanced undergraduate and graduate students of mathematics, it is also appropriate for students of engineering, physics, and economics who seek an understanding of real analysis.The author encourages an intuitive approach to problem solving and offers concrete examples, diagrams, and geometric or physical interpretations of results. Deta

  2. Nonlinear and Complex Dynamics in Real Systems

    OpenAIRE

    William Barnett; Apostolos Serletis; Demitre Serletis

    2005-01-01

    This paper was produced for the El-Naschie Symposium on Nonlinear Dynamics in Shanghai in December 2005. In this paper we provide a review of the literature with respect to fluctuations in real systems and chaos. In doing so, we contrast the order and organization hypothesis of real systems with nonlinear chaotic dynamics and discuss some techniques used in distinguishing between stochastic and deterministic behavior. Moreover, we look at the issue of where and when the ideas of chaos could p...

  3. A basic course in real analysis

    CERN Document Server

    Kumar, Ajit

    2014-01-01

    Real Number SystemAlgebra of the Real Number System Upper and Lower Bounds LUB Property and Its Applications Absolute Value and Triangle Inequality Sequences and Their Convergence Sequences and Their Convergence Cauchy Sequences Monotone Sequences Sandwich Lemma Some Important Limits Sequences Diverging to Subsequences Sequences Defined Recursively Continuity Continuous Functions Definition of Continuity Intermediate Value Theorem .Extreme Value Theorem Monotone Functions Limits Uniform Continuity Continuous Extensions Differentiation Differentiability of Functions Mean Value Theorems L'Hospit

  4. Foreign direct investments into French real estate

    OpenAIRE

    BRIZARD, Arthur

    2013-01-01

    The purpose of this thesis is to draw the global trend of Foreign Direct Investments (FDI) in the French real estate market since 2008 and to understand foreign investors’ behavior and the incentives which urge them to invest in French property market. This study relies on the numerous yearly reports released by consulting and real estate companies and gives an overview of FDI since 2008. From a legal point of view, the French property market is extremely organized. Acquiring, holding and sel...

  5. Real time monitoring of electron processors

    International Nuclear Information System (INIS)

    Nablo, S.V.; Kneeland, D.R.; McLaughlin, W.L.

    1995-01-01

    A real time radiation monitor (RTRM) has been developed for monitoring the dose rate (current density) of electron beam processors. The system provides continuous monitoring of processor output, electron beam uniformity, and an independent measure of operating voltage or electron energy. In view of the device's ability to replace labor-intensive dosimetry in verification of machine performance on a real-time basis, its application to providing archival performance data for in-line processing is discussed. (author)

  6. Why Are Real Interest Rates So High?

    OpenAIRE

    Zvi Bodie; Alex Kane; Robert L. McDonald

    1983-01-01

    This paper applies the Capital Asset Pricing Model to help explain the anomalous behavior of real interest rates during the last several years. Specifically,we are able to show that the increased volatility of bond prices since the change in Federal Reserve operating procedure in October 1979 has substantially increased the required real risk premium on long term bonds. We also consider and reject the possibility that increased risk alone accounts for the recent increase in the short-term rea...

  7. Benefits of real-time gas management

    International Nuclear Information System (INIS)

    Nolty, R.; Dolezalek, D. Jr.

    1994-01-01

    In today's competitive gas gathering, processing, storage and transportation business environment, the requirements to do business are continually changing. These changes arise from government regulations such as the amendments to the Clean Air Act concerning the environment and FERC Order 636 concerning business practices. Other changes are due to advances in technology such as electronic flow measurement (EFM) and real-time communications capabilities within the gas industry. Gas gathering, processing, storage and transportation companies must be flexible in adapting to these changes to remain competitive. These dynamic requirements can be met with an open, real-time gas management computer information system. Such a system provides flexible services with a variety of software applications. Allocations, nominations management and gas dispatching are examples of applications that are provided on a real-time basis. By providing real-time services, the gas management system enables operations personnel to make timely adjustments within the current accounting period. Benefits realized from implementing a real-time gas management system include reduced unaccountable gas, reduced imbalance penalties, reduced regulatory violations, improved facility operations and better service to customers. These benefits give a company the competitive edge. This article discusses the applications provided, the benefits from implementing a real-time gas management system, and the definition of such a system

  8. Real Exchange Rates in Advanced Transition Economies

    Directory of Open Access Journals (Sweden)

    Sanja Grubacic

    2015-10-01

    Full Text Available The recent evidence from Eastern Europe suggests that one of the major obstacles towards the adoption of euro may lie in the impact that the recession of 2008 exerted on the trajectory of real exchange rates in new member countries (European Commission, 2015.  This paper aims to establish and explain the relationship between the external shocks derived from the global financial crisis and recession of 2008 and equilibrium real exchange rate in advanced transition economies of Eastern Europe. The interplay between the external and internal balances is explained by developing an inter-temporal optimizing model of the real exchange rate determination in a small open economy with structural distortions. The results of our model suggest that, in the aftermath of recession, if the Eastern European economies attempt to restore and maintain the balance between the consumption, saving, and investment, the equilibrium real exchange rate will tend to reverse its trajectory from appreciation to depreciation over time in order to encourage a greater production in the future. The equilibrium real exchange rate depreciation in the future may obtain either as a result of an increase in the direct subsidies on investment or as a result of reduced subsidies on the "net-of-investment" income.  The deprecation of countries’ real exchange rate, however, may continue to act as an effective constraint against the adoption of euro.

  9. 33 CFR 211.1 - Real estate defined.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Real estate defined. 211.1... DEFENSE REAL ESTATE ACTIVITIES OF THE CORPS OF ENGINEERS IN CONNECTION WITH CIVIL WORKS PROJECTS Real Estate; General § 211.1 Real estate defined. The term real estate as used in this part includes land...

  10. TRERC-TEA [Texas Real Estate Research Center-Texas Education Agency] Real Estate Curriculum Workshop Committee Report.

    Science.gov (United States)

    Lyon, Robert

    The document contains a summary report of a community college real estate teachers' workshop organized to develop course outlines for the various areas in the real estate curriculum. Curriculum outlines are presented, with varying degrees of detail included, for the following eight subjects: real estate appraisal; real estate brokage; real estate…

  11. The source of real and nominal exchange rate fluctuations in Thailand: Real shock or nominal shock

    OpenAIRE

    Le Thanh, Binh

    2015-01-01

    This paper examines the source of exchange rate fluctuations in Thailand. We employed a structural vector auto-regression (SVAR) model with the long-run neutrality restriction of Blanchard and Quah (1989) to investigate the changes in real and nominal exchange rates from 1994 to 2015. In this paper, we assume that there are two types of shocks which related to exchange rate movements: real shocks and nominal shocks. The empirical analysis indicates that real shocks are the fundamental compon...

  12. Real-time PCR in virology.

    Science.gov (United States)

    Mackay, Ian M; Arden, Katherine E; Nitsche, Andreas

    2002-03-15

    The use of the polymerase chain reaction (PCR) in molecular diagnostics has increased to the point where it is now accepted as the gold standard for detecting nucleic acids from a number of origins and it has become an essential tool in the research laboratory. Real-time PCR has engendered wider acceptance of the PCR due to its improved rapidity, sensitivity, reproducibility and the reduced risk of carry-over contamination. There are currently five main chemistries used for the detection of PCR product during real-time PCR. These are the DNA binding fluorophores, the 5' endonuclease, adjacent linear and hairpin oligoprobes and the self-fluorescing amplicons, which are described in detail. We also discuss factors that have restricted the development of multiplex real-time PCR as well as the role of real-time PCR in quantitating nucleic acids. Both amplification hardware and the fluorogenic detection chemistries have evolved rapidly as the understanding of real-time PCR has developed and this review aims to update the scientist on the current state of the art. We describe the background, advantages and limitations of real-time PCR and we review the literature as it applies to virus detection in the routine and research laboratory in order to focus on one of the many areas in which the application of real-time PCR has provided significant methodological benefits and improved patient outcomes. However, the technology discussed has been applied to other areas of microbiology as well as studies of gene expression and genetic disease.

  13. REAL TIME SYSTEM OPERATIONS 2006-2007

    Energy Technology Data Exchange (ETDEWEB)

    Eto, Joseph H.; Parashar, Manu; Lewis, Nancy Jo

    2008-08-15

    The Real Time System Operations (RTSO) 2006-2007 project focused on two parallel technical tasks: (1) Real-Time Applications of Phasors for Monitoring, Alarming and Control; and (2) Real-Time Voltage Security Assessment (RTVSA) Prototype Tool. The overall goal of the phasor applications project was to accelerate adoption and foster greater use of new, more accurate, time-synchronized phasor measurements by conducting research and prototyping applications on California ISO's phasor platform - Real-Time Dynamics Monitoring System (RTDMS) -- that provide previously unavailable information on the dynamic stability of the grid. Feasibility assessment studies were conducted on potential application of this technology for small-signal stability monitoring, validating/improving existing stability nomograms, conducting frequency response analysis, and obtaining real-time sensitivity information on key metrics to assess grid stress. Based on study findings, prototype applications for real-time visualization and alarming, small-signal stability monitoring, measurement based sensitivity analysis and frequency response assessment were developed, factory- and field-tested at the California ISO and at BPA. The goal of the RTVSA project was to provide California ISO with a prototype voltage security assessment tool that runs in real time within California ISO?s new reliability and congestion management system. CERTS conducted a technical assessment of appropriate algorithms, developed a prototype incorporating state-of-art algorithms (such as the continuation power flow, direct method, boundary orbiting method, and hyperplanes) into a framework most suitable for an operations environment. Based on study findings, a functional specification was prepared, which the California ISO has since used to procure a production-quality tool that is now a part of a suite of advanced computational tools that is used by California ISO for reliability and congestion management.

  14. Medical real estate in an age of reform.

    Science.gov (United States)

    Hammond, Laca Wong; Camp, Philip J

    2011-04-01

    The following are four ways healthcare organizations are fulfilling their medical real estate needs in an era of change: Real estate monetization. Renovation of existing facilities. A careful focus on containing materials costs. Joint ventures with real estate organizations.

  15. Real quartic surfaces containing 16 skew lines

    Directory of Open Access Journals (Sweden)

    Isidro Nieto

    2004-01-01

    Full Text Available It is well known that there is an open three-dimensional subvariety Ms of the Grassmannian of lines in ℙ3 which parametrizes smooth irreducible complex surfaces of degree 4 which are Heisenberg invariant, and each quartic contains 32 lines but only 16 skew lines, being determined by its configuration of lines, are called a double 16. We consider here the problem of visualizing in a computer the real Heisenberg invariant quartic surface and the real double 16. We construct a family of points l∈Ms parametrized by a two-dimensional semialgebraic variety such that under a change of coordinates of l into its Plüecker, coordinates transform into the real coordinates for a line L in ℙ3, which is then used to construct a program in Maple 7. The program allows us to draw the quartic surface and the set of transversal lines to L. Additionally, we include a table of a group of examples. For each test example we specify a parameter, the viewing angle of the image, compilation time, and other visual properties of the real surface and its real double 16. We include at the end of the paper an example showing the surface containing the double 16.

  16. Real depletion in nodal diffusion codes

    International Nuclear Information System (INIS)

    Petkov, P.T.

    2002-01-01

    The fuel depletion is described by more than one hundred fuel isotopes in the advanced lattice codes like HELIOS, but only a few fuel isotopes are accounted for even in the advanced steady-state diffusion codes. The general assumption that the number densities of the majority of the fuel isotopes depend only on the fuel burnup is seriously in error if high burnup is considered. The real depletion conditions in the reactor core differ from the asymptotic ones at the stage of lattice depletion calculations. This study reveals which fuel isotopes should be explicitly accounted for in the diffusion codes in order to predict adequately the real depletion effects in the core. A somewhat strange conclusion is that if the real number densities of the main fissionable isotopes are not explicitly accounted for in the diffusion code, then Sm-149 should not be accounted for either, because the net error in k-inf is smaller (Authors)

  17. Testing of real-time-software

    International Nuclear Information System (INIS)

    Friesland, G.; Ovenhausen, H.

    1975-05-01

    The situation in the area of testing real-time-software is unsatisfactory. During the first phase of the project PROMOTE (prozessorientiertes Modul- und Gesamttestsystem) an analysis of the momentary situation took place, results of which are summarized in the following study about some user interviews and an analysis of relevant literature. 22 users (industry, software-houses, hardware-manufacturers, and institutes) have been interviewed. Discussions were held about reliability of real-time software with special interest to error avoidance, testing, and debugging. Main aims of the analysis of the literature were elaboration of standard terms, comparison of existing test methods and -systems, and the definition of boundaries to related areas. During the further steps of this project some means and techniques will be worked out to systematically test real-time software. (orig.) [de

  18. Failure analysis of real-time systems

    International Nuclear Information System (INIS)

    Jalashgar, A.; Stoelen, K.

    1998-01-01

    This paper highlights essential aspects of real-time software systems that are strongly related to the failures and their course of propagation. The significant influence of means-oriented and goal-oriented system views in the description, understanding and analysing of those aspects is elaborated. The importance of performing failure analysis prior to reliability analysis of real-time systems is equally addressed. Problems of software reliability growth models taking the properties of such systems into account are discussed. Finally, the paper presents a preliminary study of a goal-oriented approach to model the static and dynamic characteristics of real-time systems, so that the corresponding analysis can be based on a more descriptive and informative picture of failures, their effects and the possibility of their occurrence. (author)

  19. Concepts of real time and semi-real time material control

    International Nuclear Information System (INIS)

    Lovett, J.E.

    1975-01-01

    After a brief consideration of the traditional material balance accounting on an MBA basis, this paper explores the basic concepts of real time and semi-real time material control, together with some of the major problems to be solved. Three types of short-term material control are discussed: storage, batch processing, and continuous processing. (DLC)

  20. Bounded real and positive real balanced truncation using Σ-normalised coprime factors

    NARCIS (Netherlands)

    Trentelman, H.L.

    2009-01-01

    In this article, we will extend the method of balanced truncation using normalised right coprime factors of the system transfer matrix to balanced truncation with preservation of half line dissipativity. Special cases are preservation of positive realness and bounded realness. We consider a half

  1. Euro Membership as a Real Option Trigger

    DEFF Research Database (Denmark)

    Aabo, Tom; Pantzalis, Christos

    2007-01-01

    -adopters (UK, Sweden, and Denmark) to exercise various forms of real options such as to establish alliances / partnerships, to enter new markets / market segments, to switch suppliers, and to generally expand in the Euro-area. The study furthermore shows that small, profitable and financially constrained firms...... are particularly likely to exercise such real options triggered by the introduction of the Euro. The results go beyond the immediate trade effects, which empirical studies have shown to be weak and without trade diversion as to the three non-adopters, and provide important insights about the potential long...

  2. Real Time Linux - The RTOS for Astronomy?

    Science.gov (United States)

    Daly, P. N.

    The BoF was attended by about 30 participants and a free CD of real time Linux-based upon RedHat 5.2-was available. There was a detailed presentation on the nature of real time Linux and the variants for hard real time: New Mexico Tech's RTL and DIAPM's RTAI. Comparison tables between standard Linux and real time Linux responses to time interval generation and interrupt response latency were presented (see elsewhere in these proceedings). The present recommendations are to use RTL for UP machines running the 2.0.x kernels and RTAI for SMP machines running the 2.2.x kernel. Support, both academically and commercially, is available. Some known limitations were presented and the solutions reported e.g., debugging and hardware support. The features of RTAI (scheduler, fifos, shared memory, semaphores, message queues and RPCs) were described. Typical performance statistics were presented: Pentium-based oneshot tasks running > 30kHz, 486-based oneshot tasks running at ~ 10 kHz, periodic timer tasks running in excess of 90 kHz with average zero jitter peaking to ~ 13 mus (UP) and ~ 30 mus (SMP). Some detail on kernel module programming, including coding examples, were presented showing a typical data acquisition system generating simulated (random) data writing to a shared memory buffer and a fifo buffer to communicate between real time Linux and user space. All coding examples were complete and tested under RTAI v0.6 and the 2.2.12 kernel. Finally, arguments were raised in support of real time Linux: it's open source, free under GPL, enables rapid prototyping, has good support and the ability to have a fully functioning workstation capable of co-existing hard real time performance. The counter weight-the negatives-of lack of platforms (x86 and PowerPC only at present), lack of board support, promiscuous root access and the danger of ignorance of real time programming issues were also discussed. See ftp://orion.tuc.noao.edu/pub/pnd/rtlbof.tgz for the StarOffice overheads

  3. Axial Tomography from Digitized Real Time Radiography

    Science.gov (United States)

    Zolnay, A. S.; McDonald, W. M.; Doupont, P. A.; McKinney, R. L.; Lee, M. M.

    1985-01-18

    Axial tomography from digitized real time radiographs provides a useful tool for industrial radiography and tomography. The components of this system are: x-ray source, image intensifier, video camera, video line extractor and digitizer, data storage and reconstruction computers. With this system it is possible to view a two dimensional x-ray image in real time at each angle of rotation and select the tomography plane of interest by choosing which video line to digitize. The digitization of a video line requires less than a second making data acquisition relatively short. Further improvements on this system are planned and initial results are reported.

  4. Dynamical real numbers and living systems

    International Nuclear Information System (INIS)

    Datta, Dhurjati Prasad

    2004-01-01

    Recently uncovered second derivative discontinuous solutions of the simplest linear ordinary differential equation define not only an nonstandard extension of the framework of the ordinary calculus, but also provide a dynamical representation of the ordinary real number system. Every real number can be visualized as a living cell-like structure, endowed with a definite evolutionary arrow. We discuss the relevance of this extended calculus in the study of living systems. We also present an intelligent version of the Newton's first law of motion

  5. Idealization of The Real Stirling Cycle

    Directory of Open Access Journals (Sweden)

    Červenka Libor

    2016-12-01

    Full Text Available The paper presents a potential idealization of the real Stirling cycle. This idealization is performed by modifying the piston movement corresponding to the ideal Stirling cycle. The focus is on the cycle thermodynamics with respect to the indicated efficiency and indicated power. A detailed 1-D simulation model of a Stirling engine is used as a tool for this assessment. The model includes real non-zero volumes of heater, regenerator, cooler and connecting pipe. The model is created in the GT Power commercial simulation software.

  6. Replacing OSE with Real Time capable Linux

    OpenAIRE

    Boman, Simon; Rutgersson, Olof

    2009-01-01

    For many years OSE has been a common used operating system, with real time extensions enhancements, in embed-ded systems. But in the last decades, Linux has grown and became a competitor to common operating systems and, in recent years, even as an operating system with real time extensions. With this in mind, ÅF was interested in replacing the quite expensive OSE with some distribution of the open source based Linux on a PowerPC MPC8360. Therefore, our purpose with thesis is to implement Linu...

  7. SignalR real time application development

    CERN Document Server

    Ingebrigtsen, Einar

    2013-01-01

    This step-by-step guide gives you practical advice, tips, and tricks that will have you writing real-time apps quickly and easily.If you are a .NET developer who wants to be at the cutting edge of development, then this book is for you. Real-time application development is made simple in this guide, so as long as you have basic knowledge of .NET, a copy of Visual Studio, and NuGet installed, you are ready to go.

  8. Scalar dark matter: real vs complex

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Hongyan; Zheng, Sibo [Department of Physics, Chongqing University,Chongqing 401331 (China)

    2017-03-27

    We update the parameter spaces for both a real and complex scalar dark matter via the Higgs portal. In the light of constraints arising from the LUX 2016 data, the latest Higgs invisible decay and the gamma ray spectrum, the dark matter resonant mass region is further restricted to a narrow window between 54.9−62.3 GeV in both cases, and its large mass region is excluded until 834 GeV and 3473 GeV for the real and complex scalar, respectively.

  9. Scalar dark matter: real vs complex

    International Nuclear Information System (INIS)

    Wu, Hongyan; Zheng, Sibo

    2017-01-01

    We update the parameter spaces for both a real and complex scalar dark matter via the Higgs portal. In the light of constraints arising from the LUX 2016 data, the latest Higgs invisible decay and the gamma ray spectrum, the dark matter resonant mass region is further restricted to a narrow window between 54.9−62.3 GeV in both cases, and its large mass region is excluded until 834 GeV and 3473 GeV for the real and complex scalar, respectively.

  10. MINIX4RT: Real-Time Semaphores

    OpenAIRE

    Pessolani, Pablo Andrés

    2007-01-01

    MINIX4RT es una extensión del conocido Sistema Operativo MINIX que incorpora servicios de Tiempo Real Estricto en un nuevo microkernel pero manteniendo compatibilidad con las versiones anteriores del MINIX estándar. Los semáforos son el mecanismo primitivo para la sincronización y exclusion mutua en varios sistemas operativos, pero MINIX no brinda esa facilidad. Se adicionaron semáforos a MINIX4RT y, como éste es un Sistema Operativo de Tiempo Real, deben reunir ciertos requisitos de procesam...

  11. Real-use evaluation of effects

    DEFF Research Database (Denmark)

    Simonsen, Jesper; Hertzum, Morten

    2012-01-01

    quantitative and qualitative methods to address various levels of 'use' from overall politics to actual practice. The project concerns the introduction and use of an electronic whiteboard system to support clinical overview and logistics at emergency departments (EDs). The nurses succeed in getting 'warmer......Embracing real use in an iterative approach calls for systematic formative evaluation. Effects-driven IT Development has been suggested as a way of supporting a Participatory Design (PD) process involving implementations that expose mature prototypes to real work practices. This is followed...

  12. Bose-Einstein condensation in real space

    International Nuclear Information System (INIS)

    Valencia, J.J.; Llano, M. de; Solis, M.A.

    2004-01-01

    We show how Bose-Einstein condensation (BEC) occurs not only in momentum space but also in coordinate (or real) space. Analogies between the isotherms of a van der Waals classical gas of extended (or finite-diameter) identical atoms and the point (or zero-diameter) particles of an ideal BE gas allow concluding that, in contrast with the classical case, the volume per particle vanishes in the pure BE condensate phase precisely because the boson diameters are zero. Thus a BE condensate forms in real space without exhibiting a liquid branch as does the classical gas. (Author)

  13. Real and étale cohomology

    CERN Document Server

    Scheiderer, Claus

    1994-01-01

    This book makes a systematic study of the relations between the étale cohomology of a scheme and the orderings of its residue fields. A major result is that in high degrees, étale cohomology is cohomology of the real spectrum. It also contains new contributions in group cohomology and in topos theory. It is of interest to graduate students and researchers who work in algebraic geometry (not only real) and have some familiarity with the basics of étale cohomology and Grothendieck sites. Independently, it is of interest to people working in the cohomology theory of groups or in topos theory.

  14. Real-time systems scheduling 2 focuses

    CERN Document Server

    Chetto, Maryline

    2014-01-01

    Real-time systems are used in a wide range of applications, including control, sensing, multimedia, etc. Scheduling is a central problem for these computing/communication systems since it is responsible for software execution in a timely manner. This book, the second of two volumes on the subject, brings together knowledge on specific topics and discusses the recent advances for some of them.  It addresses foundations as well as the latest advances and findings in real-time scheduling, giving comprehensive references to important papers, but the chapters are short and not overloaded with co

  15. Real-time ISEE data system

    Science.gov (United States)

    Tsurutani, B. T.; Baker, D. N.

    1979-01-01

    A real-time ISEE data system directed toward predicting geomagnetic substorms and storms is discussed. Such a system may allow up to 60+ minutes advance warning of magnetospheric substorms and up to 30 minute warnings of geomagnetic storms (and other disturbances) induced by high-speed streams and solar flares. The proposed system utilizes existing capabilities of several agencies (NASA, NOAA, USAF), and thereby minimizes costs. This same concept may be applicable to data from other spacecraft, and other NASA centers; thus, each individual experimenter can receive quick-look data in real time at his or her base institution.

  16. Mobile waste inspection real time radiography system

    International Nuclear Information System (INIS)

    Vigil, J.; Taggart, D.; Betts, S.; Rael, C.; Martinez, F.; Mendez, J.

    1995-01-01

    The 450-KeV Mobile Real Time Radiography System was designed and purchased to inspect containers of radioactive waste produced at Los Alamos National Laboratory (LANL). The Mobile Real Time Radiography System has the capability of inspecting waste containers of various sizes from 5-gal. buckets to standard waste boxes (SWB, dimensions 54.5 in. x 71 in. x 37 in.). The fact that this unit is mobile makes it an attractive alternative to the costly road closures associated with moving waste from the waste generator to storage or disposal facilities

  17. Real-time systems scheduling fundamentals

    CERN Document Server

    Chetto, Maryline

    2014-01-01

    Real-time systems are used in a wide range of applications, including control, sensing, multimedia, etc.  Scheduling is a central problem for these computing/communication systems since responsible of software execution in a timely manner. This book provides state of knowledge in this domain with special emphasis on the key results obtained within the last decade. This book addresses foundations as well as the latest advances and findings in Real-Time Scheduling, giving all references to important papers. But nevertheless the chapters will be short and not overloaded with confusing details.

  18. Real analysis modern techniques and their applications

    CERN Document Server

    Folland, Gerald B

    1999-01-01

    An in-depth look at real analysis and its applications-now expanded and revised.This new edition of the widely used analysis book continues to cover real analysis in greater detail and at a more advanced level than most books on the subject. Encompassing several subjects that underlie much of modern analysis, the book focuses on measure and integration theory, point set topology, and the basics of functional analysis. It illustrates the use of the general theories and introduces readers to other branches of analysis such as Fourier analysis, distribution theory, and probability theory.This edi

  19. Automated real-time software development

    Science.gov (United States)

    Jones, Denise R.; Walker, Carrie K.; Turkovich, John J.

    1993-01-01

    A Computer-Aided Software Engineering (CASE) system has been developed at the Charles Stark Draper Laboratory (CSDL) under the direction of the NASA Langley Research Center. The CSDL CASE tool provides an automated method of generating source code and hard copy documentation from functional application engineering specifications. The goal is to significantly reduce the cost of developing and maintaining real-time scientific and engineering software while increasing system reliability. This paper describes CSDL CASE and discusses demonstrations that used the tool to automatically generate real-time application code.

  20. Real economic activity and accounting information in Spanish construction and real estate firms

    Directory of Open Access Journals (Sweden)

    Juan Carlos Navarro-García

    2016-01-01

    Full Text Available The aim of this work is to determine whether the accounting information provided by construction and real estate firms in Spain reflects the real economic activity, during upswings and downturns. A relationship is found between economic conditions and financial reporting in a continental European country such as Spain. Although there is a relationship between real housing price growth and financial accounting measures, real estate companies seem to show an artificial position, since they only present a relationship with Return on Assets (ROA based on low quality income (accruals. Therefore, a different financial position influences a different behaviour in these two similar sectors. In fact, some signs alerting of possible risk in real estate firms are shown.

  1. A model of real estate and psychological factors in decision-making to buy real estate

    Directory of Open Access Journals (Sweden)

    Bojan Grum

    2015-06-01

    Full Text Available This article explores the psychological characteristics of potential real estate buyers connected with their decision to buy. Through a review of research, it reveals that most studies of psychological factors in the decision to buy real estate have a partial and dispersed orientation, and examine individual factors independently. It appears that the research area is lacking clearly defined models of psychological factors in the decision to buy real estate that would integrally and relationally explain the role of psychological characteristics of real estate buyers and their expectations in relation to a decision to buy. The article identifies two sets of psychological factors, motivational and emotional, determines their interaction with potential buyers’ expectations when deciding to purchase real estate and offers starting points for forming a model.

  2. Compiling models into real-time systems

    International Nuclear Information System (INIS)

    Dormoy, J.L.; Cherriaux, F.; Ancelin, J.

    1992-08-01

    This paper presents an architecture for building real-time systems from models, and model-compiling techniques. This has been applied for building a real-time model-based monitoring system for nuclear plants, called KSE, which is currently being used in two plants in France. We describe how we used various artificial intelligence techniques for building it: a model-based approach, a logical model of its operation, a declarative implementation of these models, and original knowledge-compiling techniques for automatically generating the real-time expert system from those models. Some of those techniques have just been borrowed from the literature, but we had to modify or invent other techniques which simply did not exist. We also discuss two important problems, which are often underestimated in the artificial intelligence literature: size, and errors. Our architecture, which could be used in other applications, combines the advantages of the model-based approach with the efficiency requirements of real-time applications, while in general model-based approaches present serious drawbacks on this point

  3. Snapple[R] Real Facts Watercolors

    Science.gov (United States)

    Hodge, Stephanie

    2007-01-01

    Did you know that a hummingbird weighs less than a penny? Or that an elephant swims twenty miles a day? These are just two of the many facts that Snapple prints on the lids of their drink bottles. When Snapple first introduced the Snapple Real Facts the author was excited to see that something so trivial was also educational. She asked herself if…

  4. Real-Time Operating System/360

    Science.gov (United States)

    Hoffman, R. L.; Kopp, R. S.; Mueller, H. H.; Pollan, W. D.; Van Sant, B. W.; Weiler, P. W.

    1969-01-01

    RTOS has a cost savings advantage for real-time applications, such as those with random inputs requiring a flexible data routing facility, display systems simplified by a device independent interface language, and complex applications needing added storage protection and data queuing.

  5. Analysis of the REAL-84 intercomparison exercise

    International Nuclear Information System (INIS)

    1987-10-01

    The document presents the conclusions and the recommendations of the specialists' meeting organized by the IAEA and held in Jackson Hole (USA) between 27-29 May 1987 as a result of the analysis of the REAL-84 intercomparison exercise for improving the accuracy in radiation damage predictions in the neutron environment using good quality input data and proper calculation methods. 6 refs

  6. Advances in Real-Time Systems

    CERN Document Server

    Chakraborty, Samarjit

    2012-01-01

    This volume contains the lectures given in honor to Georg Farber as tribute to his contributions in the area of real-time and embedded systems. The chapters of many leading scientists cover a wide range of aspects, like robot or automotive vision systems or medical aspects.

  7. The Real World Significance of Performance Prediction

    Science.gov (United States)

    Pardos, Zachary A.; Wang, Qing Yang; Trivedi, Shubhendu

    2012-01-01

    In recent years, the educational data mining and user modeling communities have been aggressively introducing models for predicting student performance on external measures such as standardized tests as well as within-tutor performance. While these models have brought statistically reliable improvement to performance prediction, the real world…

  8. Acquisitions and Real Options : The Greenfield Alternative

    NARCIS (Netherlands)

    Brouthers, Keith D.; Dikova, Desislava

    P>Although acquisitions are a popular way to enter new markets, empirical evidence tends to indicate few benefits accrue to acquiring firms. This might be the case because firms use acquisitions when they should be employing an alternative mode of expansion. Applying real options theory to this

  9. 7 CFR 3016.31 - Real property.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false Real property. 3016.31 Section 3016.31 Agriculture Regulations of the Department of Agriculture (Continued) OFFICE OF THE CHIEF FINANCIAL OFFICER, DEPARTMENT OF AGRICULTURE UNIFORM ADMINISTRATIVE REQUIREMENTS FOR GRANTS AND COOPERATIVE AGREEMENTS TO STATE AND LOCAL...

  10. 14 CFR 1273.31 - Real property.

    Science.gov (United States)

    2010-01-01

    ... percentage of participation in the cost of the original purchase to the fair market value of the property... GRANTS AND COOPERATIVE AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes... subgrantee's percentage of participation in the purchase of the real property to the current fair market...

  11. 21 CFR 1403.31 - Real property.

    Science.gov (United States)

    2010-04-01

    ... the cost of the original purchase to the fair market value of the property. However, in those... percentage of participation in the purchase of the real property to the current fair market value of the... COOPERATIVE AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes, Property, and Subawards...

  12. 45 CFR 1174.31 - Real property.

    Science.gov (United States)

    2010-10-01

    ... the cost of the original purchase to the fair market value of the property. However, in those... percentage of participation in the purchase of the real property to the current fair market value of the... COOPERATIVE AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes, Property, and Subawards...

  13. 45 CFR 1183.31 - Real property.

    Science.gov (United States)

    2010-10-01

    ... the cost of the original purchase to the fair market value of the property. However, in those... percentage of participation in the purchase of the real property to the current fair market value of the... COOPERATIVE AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes, Property, and Subawards...

  14. 13 CFR 143.31 - Real property.

    Science.gov (United States)

    2010-01-01

    ... percentage of participation in the cost of the original purchase to the fair market value of the property... FOR GRANTS AND COOPERATIVE AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes... subgrantee's percentage of participation in the purchase of the real property to the current fair market...

  15. 45 CFR 1157.31 - Real property.

    Science.gov (United States)

    2010-10-01

    ... the cost of the original purchase to the fair market value of the property. However, in those... percentage of participation in the purchase of the real property to the current fair market value of the... AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes, Property, and Subawards § 1157.31...

  16. 28 CFR 66.31 - Real property.

    Science.gov (United States)

    2010-07-01

    ... percentage of participation in the cost of the original purchase to the fair market value of the property... AND COOPERATIVE AGREEMENTS TO STATE AND LOCAL GOVERNMENTS Post-Award Requirements Changes, Property... subgrantee's percentage of participation in the purchase of the real property to the current fair market...

  17. Refactoring Real-Time Java Profiles

    DEFF Research Database (Denmark)

    Søndergaard, Hans; Thomsen, Bent; Ravn, Anders Peter

    2011-01-01

    Just like other software, Java profiles benefits from refactoring when they have been used and have evolved for some time. This paper presents a refactoring of the Real-Time Specification for Java (RTSJ) and the Safety Critical Java (SCJ) profile (JSR-302). It highlights core concepts and makes...

  18. Nuclear energy: the real costs; and reply

    International Nuclear Information System (INIS)

    Jeffery, J.W.; Jones, P.M.S.

    1982-01-01

    Comments are made on a review by Jones (Atom. 306 April 1982) of 'Nuclear Energy: the Real Costs' - a special report by the Committee for the Study of the Economics of Nuclear Electricity, and criticisms contained in the review of the analysis of nuclear costs presented in the report are discussed. Dr Jones replies. (U.K.)

  19. Symbolic Victimization and Real World Fear.

    Science.gov (United States)

    Morgan, Michael

    1983-01-01

    Examines the relationship between victimization of characters in television drama and susceptibility to the viewers' cultivation of a sense of personal risk in the real world. Found that viewers whose fictional counterparts are more likely to be shown as victims show stronger associations between viewing and perceived vulnerability. (PD)

  20. Real-time video quality monitoring

    Science.gov (United States)

    Liu, Tao; Narvekar, Niranjan; Wang, Beibei; Ding, Ran; Zou, Dekun; Cash, Glenn; Bhagavathy, Sitaram; Bloom, Jeffrey

    2011-12-01

    The ITU-T Recommendation G.1070 is a standardized opinion model for video telephony applications that uses video bitrate, frame rate, and packet-loss rate to measure the video quality. However, this model was original designed as an offline quality planning tool. It cannot be directly used for quality monitoring since the above three input parameters are not readily available within a network or at the decoder. And there is a great room for the performance improvement of this quality metric. In this article, we present a real-time video quality monitoring solution based on this Recommendation. We first propose a scheme to efficiently estimate the three parameters from video bitstreams, so that it can be used as a real-time video quality monitoring tool. Furthermore, an enhanced algorithm based on the G.1070 model that provides more accurate quality prediction is proposed. Finally, to use this metric in real-world applications, we present an example emerging application of real-time quality measurement to the management of transmitted videos, especially those delivered to mobile devices.

  1. Real Estate Curriculum for Community Colleges.

    Science.gov (United States)

    Nelson, Robert W.

    The Oregon Department of Education has prepared this curriculum guide to assist community college personnel in developing or upgrading real estate programs. This fast-growing field has demanded that community colleges analyze the course content of such programs so that they are relevant to the actual needs of the industry. An Advisory Committee…

  2. Collecting data in real time with postcards

    DEFF Research Database (Denmark)

    Yee, Kwang Chien; Kanstrup, Anne Marie; Bertelsen, Pernille

    2013-01-01

    Systems. These methods often involve cross-sectional, retrospective data collection. This paper describes the postcard method for prospective real-time data collection, both in paper format and electronic format. This paper then describes the results obtained using postcard techniques in Denmark...

  3. Real Economies in Africa | Hardin | CODESRIA Bulletin

    African Journals Online (AJOL)

    Real Economies in Africa. Rebecca Hardin, Una Okonkwo. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER RESOURCES... for Researchers · for Journals · for Authors ...

  4. Studying Complex Interactions in Real Time

    DEFF Research Database (Denmark)

    Mønster, Dan

    2017-01-01

    The study of human behavior must take into account the social context, and real-time, networked experiments with multiple participants is one increasingly popular way to achieve this. In this paper a framework based on Python and XMPP is presented that aims to make it easy to develop...

  5. Competency Based Curriculum for Real Estate Agent.

    Science.gov (United States)

    McCloy, Robert J.

    This publication is a curriculum and teaching guide for preparing real estate agents in the state of West Virginia. The guide contains 30 units, or lessons. Each lesson is designed to cover three to five hours of instruction time. Competencies provided for each lesson are stated in terms of what the student should be able to do as a result of the…

  6. Euclidean distance degrees of real algebraic groups

    NARCIS (Netherlands)

    Baaijens, J.A.; Draisma, J.

    2015-01-01

    We study the problem of finding, in a real algebraic matrix group, the matrix closest to a given data matrix. We do so from the algebro-geometric perspective of Euclidean distance degrees. We recover several classical results; and among the new results that we prove is a formula for the Euclidean

  7. Euclidean distance degrees of real algebraic groups

    NARCIS (Netherlands)

    Baaijens, J.A.; Draisma, J.

    2014-01-01

    We study the problem of finding, in a real algebraic matrix group, the matrix closest to a given data matrix. We do so from the algebro-geometric perspective of Euclidean distance degrees. We recover several classical results; and among the new results that we prove is a formula for the Euclidean

  8. Infusing Real World Experiences into Engineering Education

    Science.gov (United States)

    National Academies Press, 2012

    2012-01-01

    The aim of this report is to encourage enhanced richness and relevance of the undergraduate engineering education experience, and thus produce better-prepared and more globally competitive graduates, by providing practical guidance for incorporating real world experience in US engineering programs. The report, a collaborative effort of the…

  9. Directing sustainable investments in commercial real estate

    NARCIS (Netherlands)

    Entrop, A.G.; Brouwers, H.J.H.; Braganca, L.; Pinheiro, M.; Jalali, S.; Mateus, R.; Amoeda, R.; Guedes, Correia M.

    2007-01-01

    This paper focuses on the facility costs, energy use and water consumption of commercial real estate. A framework consisting of four components is established in which the performances on these three aspects are analysed. By using the first, second and third part of the framework suggestions for

  10. Feedback as Real-Time Constructions

    Science.gov (United States)

    Keiding, Tina Bering; Qvortrup, Ane

    2014-01-01

    This article offers a re-description of feedback and the significance of time in feedback constructions based on systems theory. It describes feedback as internal, real-time constructions in a learning system. From this perspective, feedback is neither immediate nor delayed, but occurs in the very moment it takes place. This article argues for a…

  11. Interactive Real-time Magnetic Resonance Imaging

    DEFF Research Database (Denmark)

    Brix, Lau

    seeks to implement and assess existing reconstruction algorithms using multi-processors of modern graphics cards and many-core computer processors and to cover some of the potential clinical applications which might benefit from using an interactive real-time MRI system. First an off...

  12. Strategic alignment of Corporate Real Estate

    NARCIS (Netherlands)

    Appel - Meulenbroek, H.A.J.A.; Brown, M.G.; Ramakers, Y

    2010-01-01

    Purpose/value: With the growing complexity of organizations, it becomes increasingly important to tune the strategies of different business functions. In order to add maximum value to the organization, real estate strategies have to be aligned with corporate strategy. The purpose of this paper is to

  13. A foundation for real recursive function theory

    NARCIS (Netherlands)

    J.F. Costa; B. S. Loff Barreto (Bruno Serra); J. Mycka

    2009-01-01

    htmlabstractThe class of recursive functions over the reals, denoted by REC(R), was introduced by Cristopher Moore in his seminal paper written in 1995. Since then many subsequent investigations brought new results: the class REC(R) was put in relation with the class of functions generated by the

  14. Real hypersurfaces of a complex projective space

    Indian Academy of Sciences (India)

    Kaehler manifolds of con- stant holomorphic sectional curvature c) is a very interesting and active area of research. The ambient space ¯M(c), specially in the case c = 0 imposes quite significant restrictions on the geometry of its real hypersurfaces.

  15. Numerical simulation of real-world flows

    Energy Technology Data Exchange (ETDEWEB)

    Hayase, Toshiyuki, E-mail: hayase@ifs.tohoku.ac.jp [Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 (Japan)

    2015-10-15

    Obtaining real flow information is important in various fields, but is a difficult issue because measurement data are usually limited in time and space, and computational results usually do not represent the exact state of real flows. Problems inherent in the realization of numerical simulation of real-world flows include the difficulty in representing exact initial and boundary conditions and the difficulty in representing unstable flow characteristics. This article reviews studies dealing with these problems. First, an overview of basic flow measurement methodologies and measurement data interpolation/approximation techniques is presented. Then, studies on methods of integrating numerical simulation and measurement, namely, four-dimensional variational data assimilation (4D-Var), Kalman filters (KFs), state observers, etc are discussed. The first problem is properly solved by these integration methodologies. The second problem can be partially solved with 4D-Var in which only initial and boundary conditions are control parameters. If an appropriate control parameter capable of modifying the dynamical structure of the model is included in the formulation of 4D-Var, unstable modes are properly suppressed and the second problem is solved. The state observer and KFs also solve the second problem by modifying mathematical models to stabilize the unstable modes of the original dynamical system by applying feedback signals. These integration methodologies are now applied in simulation of real-world flows in a wide variety of research fields. Examples are presented for basic fluid dynamics and applications in meteorology, aerospace, medicine, etc. (topical review)

  16. Research into real-option evaluation method

    International Nuclear Information System (INIS)

    Shiba, Tsuyoshi; Wakamatsu, Hitoshi

    2002-03-01

    As an evaluational method for valuation of a corporation, an investment project, a research and development, or the evaluation technique of an enterprise strategy, a real option analysis attracts attention instead of conventional Discount Cash Flow method. The reason is that it can divert the technique for the option valuation in financial engineering to the decision-making process performed according to change in investment environment. Related references, the analysis tools, the application examples, etc. were investigated about the decision-making technique using real option analysis, and this investigation considered the application method to decision-making of the research and development at Japan Nuclear Cycle Development Institute. Consequently, since the feature is in real option analysis being the evaluation technique on condition of that business conditions and business itself also change, the real option analysis fits for evaluation of a research and development that business conditions were opaque and it turns out that the businesses are highly flexible. Moreover, it turns out that it fits also for evaluation of a capital concentration type investment issue like power plants. (author)

  17. Real Business-cycle Model with Habits

    DEFF Research Database (Denmark)

    Khorunzhina, Natalia

    2015-01-01

    This paper empirically investigates the ability of a real business-cycle model with nonseparabilities in consumption and leisure and external habits both in consumption and leisure to fit the postwar US data. The results indicate a strong but fast-dying habit in leisure, and a somewhat weaker...

  18. Teaching Real Business Cycles to Undergraduates

    Science.gov (United States)

    Brevik, Frode; Gartner, Manfred

    2007-01-01

    The authors review the graphical approach to teaching the real business cycle model introduced in Barro. They then look at where this approach cuts corners and suggest refinements. Finally, they compare graphical and exact models by means of impulse-response functions. The graphical models yield reliable qualitative results. Sizable quantitative…

  19. Relations between Real and Fictional Worlds

    DEFF Research Database (Denmark)

    Søndergaard, Leif

    1999-01-01

    I stedet for at tale om et referentielt forhold mellem fiktion og real verden, forslås det at forstå forhold som en kompleks relation. Al litteratur er skrevet ud af og ind i en samfundsmæssig kontakst. Forestillingerne om såvel autonomi som imitation afvises. Elementer fra realiteten transformeres...

  20. Towards Real Utopias in Higher Education

    Science.gov (United States)

    Suoranta, Juha; FitzSimmons, Robert

    2017-01-01

    In this article we search for real utopias for higher education by first introducing and describing a vital counter-hegemonic students movement of the early 1960s--Students for a Democratic Society (SDS), and their Port Huron Statement (1962). The movement maintained that universities are not communities of equals but served the elite. In the…

  1. Real-time PCR gene expression profiling

    Czech Academy of Sciences Publication Activity Database

    Kubista, Mikael; Sjögreen, B.; Forootan, A.; Šindelka, Radek; Jonák, Jiří; Andrade, J.M.

    2007-01-01

    Roč. 1, - (2007), s. 56-60 ISSN 1360-8606 R&D Projects: GA AV ČR KJB500520601 Institutional research plan: CEZ:AV0Z50520514 Keywords : real - time PCR, * expression profiling * statistical analysis Subject RIV: EB - Genetics ; Molecular Biology

  2. Real exchange rates and transition economies

    NARCIS (Netherlands)

    Boero, G.; Mavromatis, K.; Taylor, M.P.

    2015-01-01

    In a number of empirical studies, transition economies have been shown to be subject to the Harrod-Balassa-Samuelson effect. This implies that the currencies of these countries have experienced a prolonged appreciation in real terms as their convergence proceeded. In this paper we find that a

  3. Real Time Grid Reliability Management 2005

    Energy Technology Data Exchange (ETDEWEB)

    Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

    2008-07-07

    The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

  4. Real-time systems design and analysis

    CERN Document Server

    Laplante, Phillip A

    2004-01-01

    "Real-Time Systems Design and Analysis, Third Edition is essential for students and practicing software engineers who want improved designs, faster computation, and ultimate cost savings. Chapters discuss hardware considerations and software requirements, software systems design, the software production process, performance estimation and optimization, and engineering considerations."--Jacket.

  5. Testing Real-Time Systems Using UPPAAL

    DEFF Research Database (Denmark)

    Hessel, Anders; Larsen, Kim Guldstrand; Mikucionis, Marius

    2008-01-01

    This chapter presents principles and techniques for model-based black-box conformance testing of real-time systems using the Uppaal model-checking tool-suite. The basis for testing is given as a network of concurrent timed automata specified by the test engineer. Relativized input...

  6. Temporal logics and real time expert systems

    NARCIS (Netherlands)

    Blom, J.A.

    1996-01-01

    This paper introduces temporal logics. Due to the eternal compromise between expressive adequacy and reasoning efficiency that must decided upon in any application, full (first order logic or modal logic based) temporal logics are frequently not suitable. This is especially true in real time expert

  7. Get Real: Augmented Reality for the Classroom

    Science.gov (United States)

    Mitchell, Rebecca; DeBay, Dennis

    2012-01-01

    Kids love augmented reality (AR) simulations because they are like real-life video games. AR simulations allow students to learn content while collaborating face to face and interacting with a multimedia-enhanced version of the world around them. Although the technology may seem advanced, AR software makes it easy to develop content-based…

  8. Ray Tracing for Real-time Games

    NARCIS (Netherlands)

    Bikker, J.

    2012-01-01

    This thesis describes efficient rendering algorithms based on ray tracing, and the application of these algorithms to real-time games. Compared to rasterizationbased approaches, rendering based on ray tracing allows elegant and correct simulation of important global effects, such as shadows,

  9. p-adic analysis compared with real

    CERN Document Server

    Katok, Svetlana

    2007-01-01

    The book gives an introduction to p-adic numbers from the point of view of number theory, topology, and analysis. Compared to other books on the subject, its novelty is both a particularly balanced approach to these three points of view and an emphasis on topics accessible to undergraduates. In addition, several topics from real analysis and elementary topology which are not usually covered in undergraduate courses (totally disconnected spaces and Cantor sets, points of discontinuity of maps and the Baire Category Theorem, surjectivity of isometries of compact metric spaces) are also included in the book. They will enhance the reader's understanding of real analysis and intertwine the real and p-adic contexts of the book. The book is based on an advanced undergraduate course given by the author. The choice of the topic was motivated by the internal beauty of the subject of p-adic analysis, an unusual one in the undergraduate curriculum, and abundant opportunities to compare it with its much more familiar real...

  10. Managing Uncertainty in the Real World

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 4; Issue 4. Managing Uncertainty in the Real World - Fuzzy Systems. Satish Kumar. General Article ... Author Affiliations. Satish Kumar1. Department of Physics and Computer Science, Dayalbagh Educational Institute Dayalbagh, Agra 282005, India.

  11. 36 CFR 1207.31 - Real property.

    Science.gov (United States)

    2010-07-01

    ... Section 1207.31 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL... original purchase to the fair market value of the property. However, in those situations where a grantee or... purchase of the real property to the current fair market value of the property. ...

  12. Endangered Species: Real Life in Two Dimensions

    Science.gov (United States)

    Henderson, Lynette K.

    2012-01-01

    The focus of "Endangered Species: Real Life in Two Dimensions" is to create awareness about a critical environmental issue. There is a special urgency to this project because large numbers of animal species are currently endangered or on the brink of extinction. In addition to being enlightened about this important topic through research, students…

  13. Governance structures for real estate transactions: Markets ...

    African Journals Online (AJOL)

    networks in the governance of real-estate transactions under three property rights regimes in .... empirical results of case study research exploring the relationship between .... collaboration (Entwistle, Bristow, Hines, Donaldson & Martin, 2007: 63-79). .... self-help group development (City of Windhoek, 2005). Of these,.

  14. Asynchronous communication in real space process algebra

    NARCIS (Netherlands)

    Baeten, J.C.M.; Bergstra, J.A.

    1991-01-01

    A version of classical real space process algebra is given in which messages travel with constant speed through a three-dimensional medium. It follows that communication is asynchronous and has a broadcasting character. A state operator is used to describe asynchronous message transfer and a

  15. Asynchronous communication in real space process algebra

    NARCIS (Netherlands)

    Bergstra, J.A.; Baeten, J.C.M.

    1992-01-01

    A version of classical real space process algebra is given in which messages travel with constant speed through a three-dimensional medium. It follows that communication is asynchronous and has a broadcasting character. A state operator is used to describe asynchronous message transfer and a

  16. Mapping the Real and the False

    DEFF Research Database (Denmark)

    Kuever, Erika

    2014-01-01

    Purpose -- To show that Chinese consumers are constantly redefining and revaluing goods along the axes of the real and the false, with little regard for legal definitions of brand authenticity or “fakeness.” Findings -- In their everyday consumption practices and navigation of a complex and often...

  17. Some "Real" Problems of "Virtual" Organisation.

    Science.gov (United States)

    Hughes, John A.; O'Brien, Jon; Randall, Dave; Rouncefield, Mark; Tolmie, Peter

    2001-01-01

    An ethnographic study of organizational change in a bank considered issues surrounding virtual teamwork in virtual organizations. Problems in communication, management control, and approach to customer service were found. An underlying cause is that "virtual" work involves "real" customers, workers, and problems. (Contains 36 references.) (SK)

  18. Autopsies of the real: Resurrecting the dead

    Directory of Open Access Journals (Sweden)

    Valis, Noël

    2011-12-01

    Full Text Available The sense of the real, or the material—the dead body—as an inextricable part of the sacred does not disappear in the secular environment of the nineteenth and twentieth centuries. This article analyzes specific humanitarian narratives centered on the practice of autopsy and mummification, in which the traces of Catholicism act as a kind of spectral discourse of the imagination, where the real is configured in forms of the uncanny, the monstrous or the sacred.

    El sentido de lo real, de lo material —el cuerpo sin vida— como una inextricable parte de lo sagrado, no desaparece del ambiente secular de los siglos XIX y XX. En los relatos analizados en este artículo se estudia cómo en determinadas narrativas humanitarias centradas en la práctica de la autopsia y la momificación, las huellas del catolicismo actúan como una suerte de discurso espectral de la imaginación, en que lo real se configura en formas de lo siniestro, lo monstruoso o lo sagrado.

  19. Cellphones and Real-World Communication

    Science.gov (United States)

    Bugeja, Michael

    2004-01-01

    In this article, the author shares his views on cellphones and real-world communication. He claims that the cellphone has changed society more than the home computer, which it has assimilated. Cellphones sound during worship, wakes, births, graduations, hearings, trials, and accreditation meetings--interrupting life-changing spiritual or secular…

  20. Compiling models into real-time systems

    International Nuclear Information System (INIS)

    Dormoy, J.L.; Cherriaux, F.; Ancelin, J.

    1992-08-01

    This paper presents an architecture for building real-time systems from models, and model-compiling techniques. This has been applied for building a real-time model-base monitoring system for nuclear plants, called KSE, which is currently being used in two plants in France. We describe how we used various artificial intelligence techniques for building it: a model-based approach, a logical model of its operation, a declarative implementation of these models, and original knowledge-compiling techniques for automatically generating the real-time expert system from those models. Some of those techniques have just been borrowed from the literature, but we had to modify or invent other techniques which simply did not exist. We also discuss two important problems, which are often underestimated in the artificial intelligence literature: size, and errors. Our architecture, which could be used in other applications, combines the advantages of the model-based approach with the efficiency requirements of real-time applications, while in general model-based approaches present serious drawbacks on this point

  1. Teaching "Real Utopias" through Experiential Learning

    Science.gov (United States)

    Peterson, Lindsey; Witt, Joseph; Huntington, Carolyn

    2015-01-01

    In this article, we describe a way to encourage students to envision "real utopias" through the Global Village experience at the Heifer Ranch in Arkansas. The Global Village experience introduces participants to issues associated with global hunger, poverty, environmental sustainability, and resource consumption and provides…

  2. Teaching the Theory of Real Lenses.

    Science.gov (United States)

    Walther, A.

    1996-01-01

    Presents an approach to the study of real lenses that would not contradict Fermat's principle. Shows how the rudiments of the correct theory can be incorporated into courses to provide students a clearer notion of what they can expect in laboratory situations. (DDR)

  3. Scene independent real-time indirect illumination

    DEFF Research Database (Denmark)

    Frisvad, Jeppe Revall; Christensen, Niels Jørgen; Falster, Peter

    2005-01-01

    A novel method for real-time simulation of indirect illumination is presented in this paper. The method, which we call Direct Radiance Mapping (DRM), is based on basal radiance calculations and does not impose any restrictions on scene geometry or dynamics. This makes the method tractable for rea...

  4. Composing Synchronisation and Real-Time Constraints

    NARCIS (Netherlands)

    Bergmans, Lodewijk; Aksit, Mehmet

    There have been a number of publications illustrating the successes of object-oriented techniques in creating highly reusable software systems. Several concurrent languages have been proposed for specifying reusable synchronization specifications. Recently, a number of real-time object-oriented

  5. 12 CFR 541.23 - Residential real estate.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Residential real estate. 541.23 Section 541.23... AFFECTING FEDERAL SAVINGS ASSOCIATIONS § 541.23 Residential real estate. The terms residential real estate... home used in part for business); (c) Other real estate used for primarily residential purposes other...

  6. 33 CFR 211.22 - Real estate Claims Officers.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Real estate Claims Officers. 211..., DEPARTMENT OF DEFENSE REAL ESTATE ACTIVITIES OF THE CORPS OF ENGINEERS IN CONNECTION WITH CIVIL WORKS PROJECTS Real Estate Claims § 211.22 Real estate Claims Officers. In each Division Office the Division...

  7. 12 CFR 365.2 - Real estate lending standards.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Real estate lending standards. 365.2 Section... POLICY REAL ESTATE LENDING STANDARDS § 365.2 Real estate lending standards. (a) Each insured state... extensions of credit that are secured by liens on or interests in real estate, or that are made for the...

  8. 12 CFR 34.83 - Disposition of real estate.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 1 2010-01-01 2010-01-01 false Disposition of real estate. 34.83 Section 34.83 Banks and Banking COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY REAL ESTATE LENDING AND APPRAISALS Other Real Estate Owned § 34.83 Disposition of real estate. (a) Disposition. A national bank may...

  9. 33 CFR 211.2 - Authority to acquire real estate.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Authority to acquire real estate..., DEPARTMENT OF DEFENSE REAL ESTATE ACTIVITIES OF THE CORPS OF ENGINEERS IN CONNECTION WITH CIVIL WORKS PROJECTS Real Estate; General § 211.2 Authority to acquire real estate. (a) Congressional authority...

  10. 12 CFR 541.16 - Improved residential real estate.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Improved residential real estate. 541.16... REGULATIONS AFFECTING FEDERAL SAVINGS ASSOCIATIONS § 541.16 Improved residential real estate. The term improved residential real estate means residential real estate containing offsite or other improvements...

  11. 12 CFR 541.15 - Improved nonresidential real estate.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Improved nonresidential real estate. 541.15... REGULATIONS AFFECTING FEDERAL SAVINGS ASSOCIATIONS § 541.15 Improved nonresidential real estate. The term improved nonresidential real estate means nonresidential real estate: (a) Containing a permanent structure...

  12. 12 CFR 541.27 - Unimproved real estate.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Unimproved real estate. 541.27 Section 541.27... AFFECTING FEDERAL SAVINGS ASSOCIATIONS § 541.27 Unimproved real estate. The term unimproved real estate means real estate that will be improved, as defined in § 541.15 or § 541.16 of this part. ...

  13. 32 CFR 644.30 - Preliminary real estate work.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 4 2010-07-01 2010-07-01 true Preliminary real estate work. 644.30 Section 644... PROPERTY REAL ESTATE HANDBOOK Project Planning Military (army and Air Force) and Other Federal Agencies § 644.30 Preliminary real estate work. (a) Preliminary real estate work is defined as that action taken...

  14. 12 CFR 34.62 - Real estate lending standards.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 1 2010-01-01 2010-01-01 false Real estate lending standards. 34.62 Section 34.62 Banks and Banking COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY REAL ESTATE LENDING AND APPRAISALS Real Estate Lending Standards § 34.62 Real estate lending standards. (a) Each national bank shall...

  15. 7 CFR 1955.105 - Real property affected (CONACT).

    Science.gov (United States)

    2010-01-01

    ... inventory property. State Directors in consultation with other lenders, real estate agents, auctioneers, and... analyze farm real estate market conditions within the geographic areas of their jurisdiction and determine... real estate conditions. If the analyses of farm real estate conditions indicate that such sales would...

  16. Project Management in Real Time: A Service-Learning Project

    Science.gov (United States)

    Larson, Erik; Drexler, John A., Jr.

    2010-01-01

    This article describes a service-learning assignment for a project management course. It is designed to facilitate hands-on student learning of both the technical and the interpersonal aspects of project management, and it involves student engagement with real customers and real stakeholders in the creation of real events with real outcomes. As…

  17. Software Design Methods for Real-Time Systems

    Science.gov (United States)

    1989-12-01

    This module describes the concepts and methods used in the software design of real time systems . It outlines the characteristics of real time systems , describes...the role of software design in real time system development, surveys and compares some software design methods for real - time systems , and

  18. Visualising the Complex Roots of Quadratic Equations with Real Coefficients

    Science.gov (United States)

    Bardell, Nicholas S.

    2012-01-01

    The roots of the general quadratic equation y = ax[superscript 2] + bx + c (real a, b, c) are known to occur in the following sets: (i) real and distinct; (ii) real and coincident; and (iii) a complex conjugate pair. Case (iii), which provides the focus for this investigation, can only occur when the values of the real coefficients a, b, and c are…

  19. Providing Real Research Opoportunities to Undergraduates

    Science.gov (United States)

    Ragozzine, Darin

    2016-01-01

    The current approach to undergraduate education focuses on teaching classes which provide the foundational knowledge for more applied experiences such as scientific research. Like most programs, Florida Institute of Technology (Florida Tech or FIT) strongly encourages undergraduate research, but is dominated by content-focused courses (e.g., "Physical Mechanics"). Research-like experiences are generally offered through "lab" classes, but these are almost always reproductions of past experiments: contrived, formulaic, and lacking the "heart" of real (i.e., potentially publishable) scientific research. Real research opportunities 1) provide students with realistic insight into the actual scientific process; 2) excite students far more than end-of-chapter problems; 3) provide context for the importance of learning math, physics, and astrophysics concepts; and 4) allow unique research progress for well-chosen problems. I have provided real research opportunities as an "Exoplanet Lab" component of my Introduction to Space Science (SPS1020) class at Florida Tech, generally taken by first-year majors in our Physics, Astronomy & Astrophysics, Planetary Science, and Astrobiology degree programs. These labs are a hybrid between citizen science (e.g., PlanetHunters) and simultaneously mentoring ~60 undergraduates in similar small research projects. These projects focus on problems that can be understood in the context of the course, but which benefit from "crowdsourcing". Examples include: dividing up the known planetary systems and developing a classification scheme and organizing them into populations (Fall 2013); searching through folded light curves to discover new exoplanets missed by previous pipelines (Fall 2014); and fitting n-body models to all exoplanets with known Transit Timing Variations to estimate planet masses (Fall 2015). The students love the fact that they are doing real potentially publishable research: not many undergraduates can claim to have discovered

  20. Economic scenarios for the real estate market: Incorporating uncertainty and risk in real estate appraisals

    Directory of Open Access Journals (Sweden)

    Carsten Lausberg

    2013-08-01

    Full Text Available Real estate appraisal is usually regarded as both a science and an art: “science” because the appraiser uses mathematical calculations and other objective elements, “art” because he also uses his experience and other subjective elements. This dual character requires—among others—that new insights from other disciplines and current trends are taken into account. The central proposition of the article is that this requirement is not met. The author provides evidence that real estate risk management has made tremendous progress since the mid-1990s which has not found its way into appraisal practice, thereby creating a situation where appraisals by risk analysts differ greatly from appraisals by real estate appraisers. According to the author the gap between real estate appraisal and risk analysis should be closed from both sides. The article begins with an overview of the most important trends which will impact real estate values in the future. From these trends, an exemplary economic scenario for European real estate markets is derived in order to demonstrate that scenario writing is a powerful tool for risk management. After that the author discusses some other methods of risk management and their potential benefits for real estate appraisal.

  1. From the image of the real to the real of the image: an eulogy of appearances

    Directory of Open Access Journals (Sweden)

    Marcos Beccari

    2014-12-01

    Full Text Available This articles studies different critiques to the conception of appearances as something treacherous and that should always be judged in reference to something transcendental. Based on such authors as Nietzsche, Bergson, Rosset, Lacan and Žižek, among others, we show that the relation between images and the real is a necessary one. The point of view that recognizes this complementarity between image and the real is more likely to affirm life – in Nietzschian terms – than conceptions that seek a metaphysical Real beyond this relation. To illustrate our argument, we make reference to movies such as Vertigo and Synecdoche, New York, among others.

  2. Argus developer in practice real estate development modeling in the real world

    CERN Document Server

    Havard, Tim M

    2014-01-01

    First ""missing manual"" for Argus Developer--case studies show readers how to analyze a development, something Argus manuals don't do. Argus Developer is by far the leading program for real estate developers worldwide The book is an education in real estate finance as well as the program Author teaches seminars and consults with people using the program--back of room sales likely Author has three other books on real estate development Possibility that Argus gets behind the project The book will contain dozens of screenshots

  3. THE CONCEPT AND ESSENCE, THE STRUCTURE OF REAL ESTATE MARKET

    Directory of Open Access Journals (Sweden)

    Edgar V. Hovsepyan

    2015-01-01

    Full Text Available With the help of the international research literature, and the legislative framework of the Russian Federation and the Republic of Armenia in the article reveals the basic concepts and the essence of the real estate market, as well as given the classification of real estate. Thoroughly explains the difference between the concepts of "real estate" and "real property". In the article considered the main elements which includes the structure of the real estate market.

  4. Advanced real-time manipulation of video streams

    CERN Document Server

    Herling, Jan

    2014-01-01

    Diminished Reality is a new fascinating technology that removes real-world content from live video streams. This sensational live video manipulation actually removes real objects and generates a coherent video stream in real-time. Viewers cannot detect modified content. Existing approaches are restricted to moving objects and static or almost static cameras and do not allow real-time manipulation of video content. Jan Herling presents a new and innovative approach for real-time object removal with arbitrary camera movements.

  5. The touch of the real. Il New Historicism e il potere del reale psichiatrico in Foucault

    Directory of Open Access Journals (Sweden)

    VARRICCHIO, Francesco

    2014-12-01

    Full Text Available [The touch of the real. The New Historicism and the power of the psychiatric real in Foucault] What is the meaning of “touch of the real”? This paper connects the new historicist Greenblatt’s phrase to Foucault’s use of the term real during his lecture course on psychiatric power. According to New Historicism, influenced by the French philosopher’s thought, representation links to reality; but this reality is imbued with power relations. Throughout his course, Foucault repeteadly argues that therapeutic asylum imposes on subjectified bodiesthe reality of power and the power of reality thanks to a disciplinary technology. The constant visibility produces individuals also in other fields of the social and institutional life, in which the Panopticon principle is effective. The real springs from this mechanism and its representation.

  6. Real charge according to the current Serbian Draft Law on property rights and other real rights

    Directory of Open Access Journals (Sweden)

    Vujović Dragana

    2014-01-01

    Full Text Available Within reforms of loan security instruments law, Serbian Draft Law on Property Rights and Other Real Rights demonstrates interest for introducing new forms of non-accessory security rights. Real charge is a new institute in our legislation. It is a kind of real right on immovable thing that is regulated after the model of the German and Swiss laws, and which is in practice mostly used to secure a receivable, so that it is, to an extent, a personal hypothec. The most important reason for introduction of this institute into the Law was to allow for a security right on immovables that is more flexible than the accessorial hypothec, thus creating the environment conducive for the development of the secondary market of real loans, facilitating refinancing, and allowing for the extension of the offer of bank products with the reduction of transaction costs.

  7. Real Estate Financing and Interest Rate Hedging : A quantitative real estate investment case study

    OpenAIRE

    van de Wiel, Wimjan; Kristopher Bock, Felix

    2017-01-01

    Background: The expansive monetary policy of the European Central Bank has been leading to all-time-low interest rates and to a strong move into real estate investment. Low interest rates can work in favor of the investor (due to low interest rate expenditures), but increasing interest rates can jeopardize real estate investments. Since changes in interest rates are unpredictable, an investor needs to deal with this volatility. The capital market offers several financial instruments (so-calle...

  8. Real-time ISEE data system

    International Nuclear Information System (INIS)

    Tsurutani, B.T.; Baker, D.N.

    1979-01-01

    Prediction of geomagnetic substorms and storms would be of great scientific and commercial interest. A real-time ISEE data system directed toward this purpose is discussed in detail. Such a system may allow up to 60+ minutes advance warning of magnetospheric substorms and up to 30 minute warnings of geomagnetic storms (and other disturbances) induced by high-speed streams and solar flares. The proposed system utilizes existing capabilities of several agencies (NASA, NOAA, USAF), and thereby minimizes costs. This same concept may be applicable to data from other spacecraft, and other NASA centers; thus, each individual experimenter can receive quick-look data in real time at his or her base institution. 6 figures, 1 table

  9. Real time animation of space plasma phenomena

    International Nuclear Information System (INIS)

    Jordan, K.F.; Greenstadt, E.W.

    1987-01-01

    In pursuit of real time animation of computer simulated space plasma phenomena, the code was rewritten for the Massively Parallel Processor (MPP). The program creates a dynamic representation of the global bowshock which is based on actual spacecraft data and designed for three dimensional graphic output. This output consists of time slice sequences which make up the frames of the animation. With the MPP, 16384, 512 or 4 frames can be calculated simultaneously depending upon which characteristic is being computed. The run time was greatly reduced which promotes the rapid sequence of images and makes real time animation a foreseeable goal. The addition of more complex phenomenology in the constructed computer images is now possible and work proceeds to generate these images

  10. Real symplectic formulation of local special geometry

    CERN Document Server

    Ferrara, Sergio; Ferrara, Sergio; Macia, Oscar

    2006-01-01

    We consider a formulation of local special geometry in terms of Darboux special coordinates $P^I=(p^i,q_i)$, $I=1,...,2n$. A general formula for the metric is obtained which is manifestly $\\mathbf{Sp}(2n,\\mathbb{R})$ covariant. Unlike the rigid case the metric is not given by the Hessian of the real function $S(P)$ which is the Legendre transform of the imaginary part of the holomorphic prepotential. Rather it is given by an expression that contains $S$, its Hessian and the conjugate momenta $S_I=\\frac{\\partial S}{\\partial P^I}$. Only in the one-dimensional case ($n=1$) is the real (two-dimensional) metric proportional to the Hessian with an appropriate conformal factor.

  11. Information on the REAL84 exercise

    International Nuclear Information System (INIS)

    Zijp, W.L.; Cullen, D.E.

    1986-01-01

    This document gives information on the interlaboratory exercise REAL84. This exercise has as aim the improvement of the assessment of accuracies in radiation damage predictions by using good quality input data and proper calculation methods. In the exercise integral damage parameters (such as displacements per atom, or produced gas atoms) and spectrum characteristics are calculated for neutron spectra which are adjusted to fit experimental reaction rates obtained with activation spectrometry. The main difference with the preceding exercise REAL80 is that now improved information can be applied in the input data sets of the exercise. The improvement concerns mainly the availability of uncertainty information for the neutron spectrum and cross-section data. All parties interested are encouraged to participate in the exercise and to request from the IAEA the magnetic tape R84, which contains all input information. In order to meet the time schedule (see appendix) fast action is required. (author)

  12. Real Time Radiation Monitoring Using Nanotechnology

    Science.gov (United States)

    Li, Jing (Inventor); Hanratty, James J. (Inventor); Wilkins, Richard T. (Inventor); Lu, Yijiang (Inventor)

    2016-01-01

    System and method for monitoring receipt and estimating flux value, in real time, of incident radiation, using two or more nanostructures (NSs) and associated terminals to provide closed electrical paths and to measure one or more electrical property change values .DELTA.EPV, associated with irradiated NSs, during a sequence of irradiation time intervals. Effects of irradiation, without healing and with healing, of the NSs, are separately modeled for first order and second order healing. Change values.DELTA.EPV are related to flux, to cumulative dose received by NSs, and to radiation and healing effectivity parameters and/or.mu., associated with the NS material and to the flux. Flux and/or dose are estimated in real time, based on EPV change values, using measured .DELTA.EPV values. Threshold dose for specified changes of biological origin (usually undesired) can be estimated. Effects of time-dependent radiation flux are analyzed in pre-healing and healing regimes.

  13. RELATIONSHIP QUALITY IN REAL ESTATE COMPANIES

    Directory of Open Access Journals (Sweden)

    Florin Alexandru LUCA

    2016-05-01

    Full Text Available Customer loyalty is becoming a topic of interest which is winning increasingly more importance lately, as a result of the focus of marketing research on business relationships. One of the most important factors that determine customer loyalty is Service Quality.The stage of qualitative research consists of analyzing the research literature from this domain, which highlights the Relationship Quality construct as a distinct dimension, relevant for the real estate field. The summary of the main models of relationship quality indicate the most commonly used variables to describe this construct. The stage of quantitative research aims at testing the proportion of content validity for the most commonly used variables. The results describe an estimation of the dimensions of the Relationship Quality construct for the case of real estate services.

  14. ENERGY CONSUMPTION AND REAL GDP IN IRAN

    Directory of Open Access Journals (Sweden)

    Ali Akbar Naji Meidani

    2014-01-01

    Full Text Available As one of the most important production factors and one of the most urgent final products, energy has a special position in the growth and development of the country. This paper examines the causal relationship between Real GDP and energy consumption in various economic sectors including (household and commercial, industry, transportation and agriculture sectors for Iran during 1967–2010 using the time series technique known as the Toda-Yamamoto method. Moreover, an error correction model is also estimated so that the results of these two methods are compared. We found a strong unidirectional causality from energy consumption in industry sector to real gross domestic product. Energy consumption in industry sector can observably promote the development of economy.

  15. Real time gamma-ray signature identifier

    Science.gov (United States)

    Rowland, Mark [Alamo, CA; Gosnell, Tom B [Moraga, CA; Ham, Cheryl [Livermore, CA; Perkins, Dwight [Livermore, CA; Wong, James [Dublin, CA

    2012-05-15

    A real time gamma-ray signature/source identification method and system using principal components analysis (PCA) for transforming and substantially reducing one or more comprehensive spectral libraries of nuclear materials types and configurations into a corresponding concise representation/signature(s) representing and indexing each individual predetermined spectrum in principal component (PC) space, wherein an unknown gamma-ray signature may be compared against the representative signature to find a match or at least characterize the unknown signature from among all the entries in the library with a single regression or simple projection into the PC space, so as to substantially reduce processing time and computing resources and enable real-time characterization and/or identification.

  16. Real-time sonography in obstetrics.

    Science.gov (United States)

    Anderson, S G

    1978-03-01

    Three hundred fifty real-time scans were performed on pregnant women for various indications. Placental localization was satisfactorily obtained in 173 of 174 studies. Estimates of fetal gestation from directly measured biparietal diameter were +/-2 weeks of actual gestation in 153 of 172 (88.9%) measurements. The presence or absence of fetal motion and cardiac activity established a diagnosis of fetal viability or fetal death in 32 patients after the first trimester. Accurate diagnosis was made in 52 of 57 patients with threatened abortions, and two of these errors occurred in scans performed before completion of the eighth postmenstrual week. Because of the ability to demonstrate fetal motion, real-time sonography should have many applications in obstetrics.

  17. Analyzer of neutron flux in real time

    International Nuclear Information System (INIS)

    Rojas S, A.S.; Carrillo M, R.A.; Balderas, E.G.

    1999-01-01

    With base in the study of the real signals of neutron flux of instability events occurred in the Laguna Verde nuclear power plant where the nucleus oscillation phenomena of the reactor are in the 0 to 2.5 Hz range, it has been seen the possibility about the development a surveillance and diagnostic equipment capable to analyze in real time the behavior of nucleus in this frequencies range. An important method for surveillance the stability of the reactor nucleus is the use of the Power spectral density which allows to determine the frequencies and amplitudes contained in the signals. It is used an instrument carried out by LabVIEW graphic programming with a data acquisition card of 16 channels which works at Windows 95/98 environment. (Author)

  18. Real time processor for array speckle interferometry

    International Nuclear Information System (INIS)

    Chin, G.; Florez, J.; Borelli, R.; Fong, W.; Miko, J.; Trujillo, C.

    1989-01-01

    With the construction of several new large aperture telescopes and the development of large format array detectors in the near IR, the ability to obtain diffraction limited seeing via IR array speckle interferometry offers a powerful tool. We are constructing a real-time processor to acquire image frames, perform array flat-fielding, execute a 64 x 64 element 2D complex FFT, and to average the power spectrum all within the 25 msec coherence time for speckles at near IR wavelength. The processor is a compact unit controlled by a PC with real time display and data storage capability. It provides the ability to optimize observations and obtain results on the telescope rather than waiting several weeks before the data can be analyzed and viewed with off-line methods

  19. Real time processor for array speckle interferometry

    Science.gov (United States)

    Chin, Gordon; Florez, Jose; Borelli, Renan; Fong, Wai; Miko, Joseph; Trujillo, Carlos

    1989-02-01

    The authors are constructing a real-time processor to acquire image frames, perform array flat-fielding, execute a 64 x 64 element two-dimensional complex FFT (fast Fourier transform) and average the power spectrum, all within the 25 ms coherence time for speckles at near-IR (infrared) wavelength. The processor will be a compact unit controlled by a PC with real-time display and data storage capability. This will provide the ability to optimize observations and obtain results on the telescope rather than waiting several weeks before the data can be analyzed and viewed with offline methods. The image acquisition and processing, design criteria, and processor architecture are described.

  20. Real Time Structured Light and Applications

    DEFF Research Database (Denmark)

    Wilm, Jakob

    Structured light scanning is a versatile method for 3D shape acquisition. While much faster than most competing measurement techniques, most high-end structured light scans still take in the order of seconds to complete. Low-cost sensors such as Microsoft Kinect and time of flight cameras have made......, increased processing power, and methods presented in this thesis, it is possible to perform structured light scans in real time with 20 depth measurements per second. This offers new opportunities for studying dynamic scenes, quality control, human-computer interaction and more. This thesis discusses...... several aspects of real time structured light systems and presents contributions within calibration, scene coding and motion correction aspects. The problem of reliable and fast calibration of such systems is addressed with a novel calibration scheme utilising radial basis functions [Contribution B...

  1. Morality is real, objective, and natural.

    Science.gov (United States)

    Shermer, Michael

    2016-11-01

    To make the case that morality is real, objective, and natural, it will be argued, first, that morals exist in human nature as part of our evolutionary heritage; that morality involves how we think and act toward other moral agents in terms of whether our thoughts and actions are right or wrong with regard to their survival and flourishing; and that moral progress is real, quantifiable, and the result of our improved understanding of causality in the social and moral sciences in the same manner as our understanding of causality has progressed in the physical and biological sciences. A moral starting point is the survival and flourishing of sentient beings. © 2016 New York Academy of Sciences.

  2. Real time automatic discriminating of ultrasonic flaws

    International Nuclear Information System (INIS)

    Suhairy Sani; Mohd Hanif Md Saad; Marzuki Mustafa; Mohd Redzwan Rosli

    2009-01-01

    This paper is concerned with the real time automatic discriminating of flaws from two categories; i. cracks (planar defect) and ii. Non-cracks (volumetric defect such as cluster porosity and slag) using pulse-echo ultrasound. The raw ultrasonic flaws signal were collected from a computerized robotic plane scanning system over the whole of each reflector as the primary source of data. The signal is then filtered and the analysis in both time and frequency domain were executed to obtain the selected feature. The real time feature analysis techniques measured the number of peaks, maximum index, pulse duration, rise time and fall time. The obtained features could be used to distinguish between quantitatively classified flaws by using various tools in artificial intelligence such as neural networks. The proposed algorithm and complete system were implemented in a computer software developed using Microsoft Visual BASIC 6.0 (author)

  3. Valuation of Geothermal Wells on Real Property

    Energy Technology Data Exchange (ETDEWEB)

    Rafferty, Kevin

    2001-12-01

    The Geo-Heat Center is often contacted by individual property owners, real estate professionals and others for assistance in the evaluation of geothermal resources in real property transactions. This document is a summary of information on the methods we have suggested to approach this situation in the past. The first of these methods is employed in situations in which the geothermal resource is in use serving some application. The second approach is for situations in which there is a known well on the property but it is not currently in use. The information presented here does not address situations in which the property is underlain by suspected geothermal resources for which there is no surface manifestation or existing development. The information contained in this document is intended to address large capacity wells of the type that would be used for commercial geothermal applications.

  4. Real Space Approach to CMB deboosting

    CERN Document Server

    Yoho, Amanda; Starkman, Glenn D.; Pereira, Thiago S.

    2013-01-01

    The effect of our Galaxy's motion through the Cosmic Microwave Background rest frame, which aberrates and Doppler shifts incoming photons measured by current CMB experiments, has been shown to produce mode-mixing in the multipole space temperature coefficients. However, multipole space determinations are subject to many difficulties, and a real-space analysis can provide a straightforward alternative. In this work we describe a numerical method for removing Lorentz- boost effects from real-space temperature maps. We show that to deboost a map so that one can accurately extract the temperature power spectrum requires calculating the boost kernel at a finer pixelization than one might naively expect. In idealized cases that allow for easy comparison to analytic results, we have confirmed that there is indeed mode mixing among the spherical harmonic coefficients of the temperature. We find that using a boost kernel calculated at Nside=8192 leads to a 1% bias in the binned boosted power spectrum at l~2000, while ...

  5. Real-time imaging of quantum entanglement.

    Science.gov (United States)

    Fickler, Robert; Krenn, Mario; Lapkiewicz, Radek; Ramelow, Sven; Zeilinger, Anton

    2013-01-01

    Quantum Entanglement is widely regarded as one of the most prominent features of quantum mechanics and quantum information science. Although, photonic entanglement is routinely studied in many experiments nowadays, its signature has been out of the grasp for real-time imaging. Here we show that modern technology, namely triggered intensified charge coupled device (ICCD) cameras are fast and sensitive enough to image in real-time the effect of the measurement of one photon on its entangled partner. To quantitatively verify the non-classicality of the measurements we determine the detected photon number and error margin from the registered intensity image within a certain region. Additionally, the use of the ICCD camera allows us to demonstrate the high flexibility of the setup in creating any desired spatial-mode entanglement, which suggests as well that visual imaging in quantum optics not only provides a better intuitive understanding of entanglement but will improve applications of quantum science.

  6. The Fundamental Uncertainty of Business: Real Options

    Science.gov (United States)

    Dyer, James S.

    The purpose of this paper is to discuss the manner in which uncertainty is currently evaluated in business, with an emphasis on economic measures. In recent years, the accepted approach for the valuation of capital investment decisions has become one based on the theory of real options. From the standpoint of this workshop, the interesting aspect of real options is its focus on the flexibility of management to respond to changes in the environment as a feature of an alternative that has unique value, known as "option value." While this may not be surprising to most participants in this workshop, it does represent a radical change in traditional thinking about risk in business, where efforts have primarily been focused on the elimination of risk when possible.

  7. Real-time interactive treatment planning

    International Nuclear Information System (INIS)

    Otto, Karl

    2014-01-01

    The goal of this work is to develop an interactive treatment planning platform that permits real-time manipulation of dose distributions including DVHs and other dose metrics. The hypothesis underlying the approach proposed here is that the process of evaluating potential dose distribution options and deciding on the best clinical trade-offs may be separated from the derivation of the actual delivery parameters used for the patient’s treatment. For this purpose a novel algorithm for deriving an Achievable Dose Estimate (ADE) was developed. The ADE algorithm is computationally efficient so as to update dose distributions in effectively real-time while accurately incorporating the limits of what can be achieved in practice. The resulting system is a software environment for interactive real-time manipulation of dose that permits the clinician to rapidly develop a fully customized 3D dose distribution. Graphical navigation of dose distributions is achieved by a sophisticated method of identifying contributing fluence elements, modifying those elements and re-computing the entire dose distribution. 3D dose distributions are calculated in ∼2–20 ms. Including graphics processing overhead, clinicians may visually interact with the dose distribution (e.g. ‘drag’ a DVH) and display updates of the dose distribution at a rate of more than 20 times per second. Preliminary testing on various sites shows that interactive planning may be completed in ∼1–5 min, depending on the complexity of the case (number of targets and OARs). Final DVHs are derived through a separate plan optimization step using a conventional VMAT planning system and were shown to be achievable within 2% and 4% in high and low dose regions respectively. With real-time interactive planning trade-offs between Target(s) and OARs may be evaluated efficiently providing a better understanding of the dosimetric options available to each patient in static or adaptive RT. (paper)

  8. Real time simulator for material testing reactor

    Energy Technology Data Exchange (ETDEWEB)

    Takemoto, Noriyuki; Imaizumi, Tomomi; Izumo, Hironobu; Hori, Naohiko; Suzuki, Masahide [Japan Atomic Energy Agency, Oarai Research and Development Center, Oarai, Ibaraki (Japan); Ishitsuka, Tatsuo; Tamura, Kazuo [ITOCHU Techno-Solutions Corp., Tokyo (Japan)

    2012-03-15

    Japan Atomic Energy Agency (JAEA) is now developing a real time simulator for a material testing reactor based on Japan Materials Testing Reactor (JMTR). The simulator treats reactor core system, primary and secondary cooling system, electricity system and irradiation facility systems. Possible simulations are normal reactor operation, unusual transient operation and accidental operation. The developed simulator also contains tool to revise/add facility in it for the future development. (author)

  9. THE REAL OPTIONS OF CAPITAL BUDGET

    Directory of Open Access Journals (Sweden)

    Antonio Lopo Martins

    2008-07-01

    Full Text Available The traditional techniques of capital budget, as the deducted cash flow and the net value present, do not incorporate existing flexibilities in an investment project, they tend to distort the value of certain investments, mainly those that are considered in scenes of uncertainty and risk. Therefore, this study intends to demonstrate that the Real Options Theory (TOR is a useful methodology to evaluate and to indicate the best option for project of expansion investment. To reach the considered objective the procedure method was used a case study, having as unit of case the Resort Praia Hotel do Litoral Norte of Salvador. This study was developed of the following form: first it identified the traditional net value present and later it was incorporated the volatileness of each analyzed uncertainty. Second, as the real options are analogous to the financial options, it was necessary to identify elements that composed the terminologies of the financial options with intention to get the value of the real option. For this model of options pricing of Black & Scholes jointly with a computational simulator was used (SLS to get the expanded net value present. As a result of this study it was possible to evidence that using the traditional tool of capital budget Net Value Present (VPL is negative, therefore the project of expansion of the Hotel would be rejected. While for the application of methodology TOR the project presents positive Expanded Present Value which would represent an excellent chance of investment. Key-word: Capital budget, Real options, Analysis of investments.

  10. Physician alignment strategies and real estate.

    Science.gov (United States)

    Czerniak, Thomas A

    2012-06-01

    When addressing locations of facilities after acquiring physician practices, hospitals should: Acknowledge the hospital's ambulatory plan is the driver rather than real estate assumed with the physician practices, Review the hospital ambulatory service plan for each submarket, Review the location of facilities within the service area and their proximity to one another, Sublease or sell existing facilities that are not appropriate, Ensure that the size and characteristics of each facility in the market are appropriate and consistent with the hospital's image.

  11. A note on monotone real circuits

    Czech Academy of Sciences Publication Activity Database

    Hrubeš, Pavel; Pudlák, Pavel

    2018-01-01

    Roč. 131, March (2018), s. 15-19 ISSN 0020-0190 EU Projects: European Commission(XE) 339691 - FEALORA Institutional support: RVO:67985840 Keywords : computational complexity * monotone real circuit * Karchmer-Wigderson game Subject RIV: BA - General Mathematics OBOR OECD: Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8) Impact factor: 0.748, year: 2016 http ://www.sciencedirect.com/science/article/pii/S0020019017301965?via%3Dihub

  12. Probabilistic real-time contingency ranking method

    International Nuclear Information System (INIS)

    Mijuskovic, N.A.; Stojnic, D.

    2000-01-01

    This paper describes a real-time contingency method based on a probabilistic index-expected energy not supplied. This way it is possible to take into account the stochastic nature of the electric power system equipment outages. This approach enables more comprehensive ranking of contingencies and it is possible to form reliability cost values that can form the basis for hourly spot price calculations. The electric power system of Serbia is used as an example for the method proposed. (author)

  13. Monetary Policy Frameworks and Real Equilibrium Determinacy

    DEFF Research Database (Denmark)

    Jensen, Henrik

    2002-01-01

    In a simple "prototype" model of monetary policymaking, I examine the issue of real equilibrium determinacy under targeting and instrument rules. The former framework involves minimization of a loss function (under discretion or commitment), whereas the latter involves commitment to an interest...... rate rule. While instrument rules only lead to determinacy under certain conditions, the targeting rules under consideration always secure determinacy. Within an extended model, I argue that econometric estimations of nominal interest rate response functions may tell little about the economy...

  14. Advanced real time radioscopy and computed tomography

    International Nuclear Information System (INIS)

    Sauerwein, Ch.; Nuding, W.; Grimm, R.; Wiacker, H.

    1996-01-01

    The paper describes three x-ray inspection systems. One radioscopic system is designed for the inspection of castings. The next integrates a radioscopic and a tomographic mode. The radioscopy has a high resolution camera and real time image processor. Radiation sources are a 450 kV industrial and a 200 kV microfocus tube. The third system is a tomographic system with 30 scintillation detectors for the inspection of nuclear waste containers. (author)

  15. Fundamentals, Misvaluation, and Investment: The Real Story

    OpenAIRE

    Chirinko, Robert S.; Schaller, Huntley

    2006-01-01

    Abstract: Is real investment fully determined by fundamentals or is it sometimes affected by stockmarket misvaluation? We introduce three new tests that: measure the reaction of investment to sales shocks for firms that may be overvalued; use Fama-MacBeth regressions to determine whether "overinvestment" affects subsequent returns; and analyze the time path of the marginal product of capital in reaction to fundamental and misvaluation shocks. Besides these qualitative tests, we introduce a me...

  16. Splitting of inviscid fluxes for real gases

    Science.gov (United States)

    Liou, Meng-Sing; Van Leer, Bram; Shuen, Jian-Shun

    1990-01-01

    Flux-vector and flux-difference splittings for the inviscid terms of the compressible flow equations are derived under the assumption of a general equation of state for a real gas in equilibrium. No necessary assumptions, approximations for auxiliary quantities are introduced. The formulas derived include several particular cases known for ideal gases and readily apply to curvilinear coordinates. Applications of the formulas in a TVD algorithm to one-dimensional shock-tube and nozzle problems show their quality and robustness.

  17. Tourism in Real and Virtual Space

    Directory of Open Access Journals (Sweden)

    Alireza Dehghan

    2009-07-01

    Full Text Available During these two decades, according to the expansion of communication, there is a deep transformation in individuals’ conception of space. As space plays an important role in tourism, either real or virtual, this transformation happens in the field too. The present study attempts to show how tourism in the contemporary virtualized world, or as some authors name: the dual globalized situation, occurs.

  18. Retail payments and the real economy

    OpenAIRE

    Hasan, Iftekhar; De Renzis, Tania; Schmiedel, Heiko

    2013-01-01

    This paper examines the fundamental relationship between retail payments and the real economy. Using data from across 27 European markets over the period 1995-2009, the results confirm that migration to efficient electronic retail payments stimulates the overall economy, consumption and trade. Among different payment instruments, this relationship is strongest for card payments, followed by credit transfers. Cheque payments are found to have a relatively low macroeconomic impact. Retail payme...

  19. Real time computer controlled weld skate

    Science.gov (United States)

    Wall, W. A., Jr.

    1977-01-01

    A real time, adaptive control, automatic welding system was developed. This system utilizes the general case geometrical relationships between a weldment and a weld skate to precisely maintain constant weld speed and torch angle along a contoured workplace. The system is compatible with the gas tungsten arc weld process or can be adapted to other weld processes. Heli-arc cutting and machine tool routing operations are possible applications.

  20. Real Options Analysis of Mining Projects

    OpenAIRE

    Rudolf Zdravlje

    2011-01-01

    When long life assets are being evaluated based on constant predictions of future variables and the assumptions of zero management flexibility, is value being missed? In project evaluation today, the most common evaluation methods that calculate a net present value are discounted cash flow (DCF) analysis, decision tree analysis and Monte Carlo simulation. A fourth method, which is beginning to gain ground in terms of its use in the mining industry, is real option analysis (ROA). ROA utilizes ...

  1. Real-time controller for hydrostatic transmission

    OpenAIRE

    2014-01-01

    M. Ing. (Electrical and Electronic Engineering) This dissertation describes the development of a modular real-time controller implemented on a personal computer for a hydrostatically driven vehicle. In such a vehicle the conventional mechanical transmission is replaced with a hydrostatic pump and two hydrostatic motors, making use of the secondary control principle. The infinitely variable transmission and wheel pair controller gives the vehicle superior traction and mobility over conventi...

  2. Telepositional portable real time radiation monitoring system

    International Nuclear Information System (INIS)

    Talpalariu, Jeni; Matei, Corina; Popescu, Oana

    2010-01-01

    Technology development for complex portable networks is on going to meet the area dosimetry challenge, improving the basic design using new telepositional GPS satellite methods and GSM terrestrial civil radio transmission networks. The system and devices proposed overcome the limitations of fixed and portable dosimeters, providing wireless real time radiations data and geospatial information's means, using many portable dosimeter stations and a mobile dosimeter computerised central console. (authors)

  3. Real time simulator for material testing reactor

    International Nuclear Information System (INIS)

    Takemoto, Noriyuki; Imaizumi, Tomomi; Izumo, Hironobu; Hori, Naohiko; Suzuki, Masahide; Ishitsuka, Tatsuo; Tamura, Kazuo

    2012-01-01

    Japan Atomic Energy Agency (JAEA) is now developing a real time simulator for a material testing reactor based on Japan Materials Testing Reactor (JMTR). The simulator treats reactor core system, primary and secondary cooling system, electricity system and irradiation facility systems. Possible simulations are normal reactor operation, unusual transient operation and accidental operation. The developed simulator also contains tool to revise/add facility in it for the future development. (author)

  4. The real thing is something else

    DEFF Research Database (Denmark)

    Nielsen, Henrik Smed

    2008-01-01

    The trailer to Lady in the Lake (1947) promises an experience of the real which it will provide by having the camera assume Philip Marlowe's first person perspective throughout. Critics have discounted the experiment for a variety of reasons. Adopting a phenomenological perspective and comparing ...... the film to RoboCop (1987), Henrik Smed Nielsen suggests an original reason why its first person perspective "just does not feel right." Udgivelsesdato: 16 Juni...

  5. Boundary Correct Real-Time Soft Shadows

    DEFF Research Database (Denmark)

    Jacobsen, Bjarke; Christensen, Niels Jørgen; Larsen, Bent Dalgaard

    2004-01-01

    This paper describes a method to determine correct shadow boundaries from an area light source using umbra and penumbra volumes. The light source is approximated by a circular disk as this gives a fast way to extrude the volumes. The method also gives a crude estimate of the visibility of the are...... for implementation on most programmable hardware. Though some crude approximations are used in the visibility function, the method can be used to produce soft shadows with correct boundaries in real time....

  6. Asynchronous communication in real space process algebra

    OpenAIRE

    Baeten, JCM Jos; Bergstra, JA Jan

    1990-01-01

    A version of classical real space process algebra is given in which messages travel with constant speed through a three-dimensional medium. It follows that communication is asynchronous and has a broadcasting character. A state operator is used to describe asynchronous message transfer and a priority mechanism allows to express the broadcasting mechanism. As an application, a protocol is specified in which the receiver moves with respect to the sender.

  7. Geotourism in the "Estrada Real", Brazil

    Science.gov (United States)

    Travassos, L. E. P.; Barbosa, F. M. Da C. P.

    2009-04-01

    Many natural landscapes are preserved throughout the World due to their cultural and historical values as well as for their environmental importance. The Way of Saint James of Compostela (Camino de Santiago de Compostela), located in Europe, is a well known example of this. It was the inspiration source for the development of a tourist route in the Brazilian States of Minas Gerais, Sao Paulo and Rio de Janeiro, although it has no pilgrimage connotation. The Estrada Real (literally translated as the Royal Route) is made of a series of roads or routes that were formerly used by the Portuguese colonizers to control the flow of gold, silver, diamonds and other precious stones and minerals. The tourist activities, particularly in the State of Minas Gerais, are experiencing an accelerated growth, benefiting the local and traditional communities economically. The existence of various geomorphological and geological sites in the Estrada Real has also favored the increase of the ecotourism and the Brazilian incipient geotourism. However, the uncontrolled touristic activities can damage the natural environment and some historical heritage sites. This research basically consisted in a preliminary identification of important geomorphosites such as caves and mountains that need to be protected for a rational and sustainable use. Out of the 4,632 known Brazilian caves, approximately 1,655 caves developed in limestone, dolomite, quartzite and granite are located in the State of Minas Gerais. For this reason, the authors strongly recommend that studies on the importance of such geomorphosites should take place in the municipalities of the Estrada Real in order to guide the regional development of tourism and sustainable development. Keywords: ecotourism, Estrada Real, sustainability.

  8. Strongly stable real infinitesimally symplectic mappings

    NARCIS (Netherlands)

    Cushman, R.; Kelley, A.

    We prove that a mapA εsp(σ,R), the set of infinitesimally symplectic maps, is strongly stable if and only if its centralizerC(A) insp(σ,R) contains only semisimple elements. Using the theorem that everyB insp(σ,R) close toA is conjugate by a real symplectic map to an element ofC(A), we give a new

  9. A note on monotone real circuits

    Czech Academy of Sciences Publication Activity Database

    Hrubeš, Pavel; Pudlák, Pavel

    2018-01-01

    Roč. 131, March (2018), s. 15-19 ISSN 0020-0190 EU Projects: European Commission(XE) 339691 - FEALORA Institutional support: RVO:67985840 Keywords : computational complexity * monotone real circuit * Karchmer-Wigderson game Subject RIV: BA - General Mathematics OBOR OECD: Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8) Impact factor: 0.748, year: 2016 http://www.sciencedirect.com/science/article/pii/S0020019017301965?via%3Dihub

  10. Real-time Astrometry Using Phase Congruency

    Science.gov (United States)

    Lambert, A.; Polo, M.; Tang, Y.

    Phase congruency is a computer vision technique that proves to perform well for determining the tracks of optical objects (Flewelling, AMOS 2014). We report on a real-time implementation of this using an FPGA and CMOS Image Sensor, with on-sky data. The lightweight instrument can provide tracking update signals to the mount of the telescope, as well as determine abnormal objects in the scene.

  11. Real-time multiple image manipulations

    International Nuclear Information System (INIS)

    Arenson, J.S.; Shalev, S.; Legris, J.; Goertzen, Y.

    1984-01-01

    There are many situations in which it is desired to manipulate two or more images under real-time operator control. The authors have investigated a number of such cases in order to determine their value and applicability in clinical medicine and laboratory research. Several examples are presented in detail. The DICOM-8 video image computer system was used due to its capability of storing two 512 x 512 x 8 bit images and operating on them, and/or an incoming video frame, with any of a number of real time operations including addition, subtraction, inversion, averaging, logical AND, NAND, OR, NOR, NOT, XOR and XNOR, as well as combinations of these. Some applications involve manipulations of or among the stored images. In others, a stored image is used as a mask or template for positioning or adjusting a second image to be grabbed via a video camera. The accuracy of radiotherapy treatment is verified by comparing port films with the original radiographic planning film, which is previously digitized and stored. Moving the port film on the light box while viewing the real-time subtraction image allows for adjustments of zoom, translation and rotation, together with contrast and edge enhancement

  12. Real time ultrasonography in obstructive jaundice

    International Nuclear Information System (INIS)

    Cho, Kyung Sik; Kim, Ho Kyun; Sung, Nak Kwan; Kim, Soon Yong

    1982-01-01

    Ultrasonography is a predominantly accurate, relatively simple unique diagnostic method of obstructive jaundice. The ultrasonographic findings of obstructive jaundice are dilated intra- and extrahepatic duct with intraluminal hyper reflective echo or mass in and/ or around the bile duct. The superiority of high resolution real time ultrasonography for the diagnosis of obstructive jaundice is bases on the easy detectability of extra- and intrahepatic bile ducts by its multiple sectional images in a short time, the flexibility of probe and small crystal size. Author evaluated real time sonographic findings 46 obstructive jaundice patients confirmed by surgery or radiographical examinations. The results were: 1. Diameter of extrahepatic duct in obstructive jaundice were varied from normal to 4.0 Cm, mostly 8 to 10 mm in diameter (26%). Degree of dilatation of biliary duct appeared more prominent in cancer patients than other causes of obstruction. 2. The site of obstruction was detected in 85% (39/46) and its common site was common bile duct in 63% (29/46). 3. The diagnostic accuracy of choledocholithiasis and cancer was 82% (22/27) and 44% (4/9), respectively. Diagnostic accuracy of the real time ultrasonography in obstructive jaundice was over all 75% (34/46)

  13. Real-time earthquake data feasible

    Science.gov (United States)

    Bush, Susan

    Scientists agree that early warning devices and monitoring of both Hurricane Hugo and the Mt. Pinatubo volcanic eruption saved thousands of lives. What would it take to develop this sort of early warning and monitoring system for earthquake activity?Not all that much, claims a panel assigned to study the feasibility, costs, and technology needed to establish a real-time earthquake monitoring (RTEM) system. The panel, drafted by the National Academy of Science's Committee on Seismology, has presented its findings in Real-Time Earthquake Monitoring. The recently released report states that “present technology is entirely capable of recording and processing data so as to provide real-time information, enabling people to mitigate somewhat the earthquake disaster.” RTEM systems would consist of two parts—an early warning system that would give a few seconds warning before severe shaking, and immediate postquake information within minutes of the quake that would give actual measurements of the magnitude. At this time, however, this type of warning system has not been addressed at the national level for the United States and is not included in the National Earthquake Hazard Reduction Program, according to the report.

  14. The Raptor Real-Time Processing Architecture

    Science.gov (United States)

    Galassi, M.; Starr, D.; Wozniak, P.; Brozdin, K.

    The primary goal of Raptor is ambitious: to identify interesting optical transients from very wide field of view telescopes in real time, and then to quickly point the higher resolution Raptor ``fovea'' cameras and spectrometer to the location of the optical transient. The most interesting of Raptor's many applications is the real-time search for orphan optical counterparts of Gamma Ray Bursts. The sequence of steps (data acquisition, basic calibration, source extraction, astrometry, relative photometry, the smarts of transient identification and elimination of false positives, telescope pointing feedback, etc.) is implemented with a ``component'' approach. All basic elements of the pipeline functionality have been written from scratch or adapted (as in the case of SExtractor for source extraction) to form a consistent modern API operating on memory resident images and source lists. The result is a pipeline which meets our real-time requirements and which can easily operate as a monolithic or distributed processing system. Finally, the Raptor architecture is entirely based on free software (sometimes referred to as ``open source'' software). In this paper we also discuss the interplay between various free software technologies in this type of astronomical problem.

  15. Gentrification and models for real estate analysis

    Directory of Open Access Journals (Sweden)

    Gianfranco Brusa

    2013-08-01

    Full Text Available This research propose a deep analysis of Milanese real estate market, based on data supplied by three real estate organizations; gentrification appears in some neighborhoods, such as Tortona, Porta Genova, Bovisa, Isola Garibaldi: the latest is the subject of the final analysis, by surveying of physical and social state of the area. The survey takes place in two periods (2003 and 2009 to compare the evolution of gentrification. The results of surveys has been employed in a simulation by multi-agent system model, to foresee long term evolution of the phenomenon. These neighborhood micro-indicators allow to put in evidence actual trends, conditioning a local real estate market, which can translate themselves in phenomena such as gentrification. In present analysis, the employ of cellular automata models applied to a neighborhood in Milan (Isola Garibaldi produced the dynamic simulation of gentrification trend during a very long time: the cyclical phenomenon (one loop holds a period of twenty – thirty years appears sometimes during a theoretical time of 100 – 120 – 150 years. Simulation of long period scenarios by multi-agent systems and cellular automata provides estimator with powerful tool, without limits in implementing it, able to support him in appraisal judge. It stands also to reason that such a tool can sustain urban planning and related evaluation processes.

  16. CODA Performance in the Real World

    International Nuclear Information System (INIS)

    D.J. Abbott; W.G. Heyes; E. Jastrzembski; R. W. MacLeod; C. Timmer; E. Wolin

    2000-01-01

    The most ambitious implementation of the Jefferson Lab data acquisition system (CODA) to date is for the CLAS spectrometer in Experimental Hall B. CLAS has over 40,000 instrumented channels and uses up to 30 front-end (FASTBUS/VME) crates in the DAQ subsystem. During the initial experiments we found that performance of the fully instrumented DAQ system did not scale as expected based on single point to point benchmarks. Over the past year we have been able to study various performance bottlenecks in the CLAS DAQ system including front-end real time performance, switched 100BaseT Ethernet data transport, and online data distribution and recording. Performance tuning was necessary for components on both real time (VxWorks) and UNIX (Solaris) operating systems. In addition, a new efficient Event Transfer System (ET) was developed to provide faster online monitoring while having minimal impact on data throughput to storage. We discuss these issues and efforts to overcome the real world problems associated with running a high performance DAQ system on a variety of commercial hardware and software

  17. CODA performance in the real world

    International Nuclear Information System (INIS)

    Abbott, D.J.; Heyes, W.G.; Jastrzembski, E.; MacLeod, R.W.; Timmer, C.; Wolin, E.

    1999-01-01

    The most ambitious implementation of the Jefferson Lab data acquisition system (CODA) to date is for the CLAS spectrometer in Experimental Hall B. CLAS has over 40,000 instrumented channels and uses up to 30 front-end (FASTBUS/VME) crates in the DAQ subsystem. During the initial experiments the authors found that performance of the fully instrumented DAQ system did not scale as expected based on single point to point benchmarks. Over the past year the authors have been able to study various performance bottlenecks in the CLAS DAQ system including front-end real time performance, switched 100BaseT Ethernet data transport, and online data distribution and recording. Performance tuning was necessary for components on both real time (VxWorks) and UNIX (Solaris) operating systems. In addition, a new efficient Event Transfer System (ET) was developed to provide faster online monitoring while having minimal impact on data throughput to storage. They discuss these issues and efforts to overcome the real world problems associated with running a high performance DAQ system on a variety of commercial hardware and software

  18. Tuning Linux to meet real time requirements

    Science.gov (United States)

    Herbel, Richard S.; Le, Dang N.

    2007-04-01

    There is a desire to use Linux in military systems. Customers are requesting contractors to use open source to the maximal possible extent in contracts. Linux is probably the best operating system of choice to meet this need. It is widely used. It is free. It is royalty free, and, best of all, it is completely open source. However, there is a problem. Linux was not originally built to be a real time operating system. There are many places where interrupts can and will be blocked for an indeterminate amount of time. There have been several attempts to bridge this gap. One of them is from RTLinux, which attempts to build a microkernel underneath Linux. The microkernel will handle all interrupts and then pass it up to the Linux operating system. This does insure good interrupt latency; however, it is not free [1]. Another is RTAI, which provides a similar typed interface; however, the PowerPC platform, which is used widely in real time embedded community, was stated as "recovering" [2]. Thus this is not suited for military usage. This paper provides a method for tuning a standard Linux kernel so it can meet the real time requirement of an embedded system.

  19. Factorials of real negative and imaginary numbers - A new perspective.

    Science.gov (United States)

    Thukral, Ashwani K

    2014-01-01

    Presently, factorials of real negative numbers and imaginary numbers, except for zero and negative integers are interpolated using the Euler's gamma function. In the present paper, the concept of factorials has been generalised as applicable to real and imaginary numbers, and multifactorials. New functions based on Euler's factorial function have been proposed for the factorials of real negative and imaginary numbers. As per the present concept, the factorials of real negative numbers, are complex numbers. The factorials of real negative integers have their imaginary part equal to zero, thus are real numbers. Similarly, the factorials of imaginary numbers are complex numbers. The moduli of the complex factorials of real negative numbers, and imaginary numbers are equal to their respective real positive number factorials. Fractional factorials and multifactorials have been defined in a new perspective. The proposed concept has also been extended to Euler's gamma function for real negative numbers and imaginary numbers, and beta function.

  20. Real Options Analysis of Electricity Investments

    Energy Technology Data Exchange (ETDEWEB)

    Heggedal, Ane Marte

    2012-07-01

    This thesis utilizes real options analysis for evaluating investment opportunities in the electricity sector. It also formally tests how investors in hydropower plants have included uncertainty when considering their investment opportunities. The real options method applies financial options theory to quantify the value of management flexibility and is chosen due to three important characteristics of investments in the electricity sector. First; the investment is completely or partially irreversible, second; the investor can choose when to invest in the facility, and third; there is uncertainty in several factors affecting the cash flows of the investments. Factors of uncertainty include the development of electricity prices, policies, technological advances, and macroeconomics measures.Four papers are included in this thesis. Paper 1, Upgrading hydropower plants with storage: Timing and capacity choice, presents a valuation framework for deciding when to upgrade an existing hydropower plant and which capacity to choose. The second paper, Transmission capacity between Norway and Germany: A real options analysis, sheds light on when two electricity markets, in this case Norway and Germany, should be connected through a sub sea cable. The investor can choose when to invest and the capacity of the cable, and may also choose to invest sequentially. Paper 3, Optimal timing and capacity choice for pumped hydropower storage, investigates when investment in a pumped hydropower plant with storage should be undertaken and what the capacity of the facility should be. Whereas the three first papers investigate investment opportunities, Paper 4, Uncertain climate policy decisions and investment timing: Evidence from small hydropower plants, studies when investors in small hydropower plants chose to invest. The analyses disclose whether the net present value approach or the real options method best describe the investment decisions made by the investors. Viewing investment

  1. MASS APPRAISAL AND REAL ESTATE TAXATION

    Directory of Open Access Journals (Sweden)

    VORONIN V. О.

    2015-12-01

    Full Text Available Raising of problem. The government at the legislative level fixed the definition of market value for tax purposes as mandatory in the implementation of real estate transactions. In order to meet the requirements of objectivity, uniformity and consistency of the results obtained during the evaluation procedures, as well as minimize the influence of subjective factors, there is a need to develop a methodology for evaluating an automated procedure for determining the estimated value of the property based on its market value. To solve this problem, we use special techniques and methods of mass appraisal that incorporates computer-supported statistical analyses, such as multiple regression analysis and adaptive estimation procedure for use in the field of property valuation and property rights. Purpose. Realization of this goal involves the development of the concept of a computer-assisted mass appraisal. The basis of this concept is an adaptive hybrid models of market pricing in different market segments that incorporates software adaptive algorithms for determining the market value by the three evaluation approaches using the results of a multi-level real estate market analysis. It was proposed the utility automated valuation models which is intended for the implementation of a computerized real estate valuation based on the developed software adaptive algorithms. Con-clusion. To achieve this goal have been developed and used concepts underlying of computerized mass appraisal. The basis of this concept is adaptive hybrid pricing models in various segments of the real estate market of Ukraine. The problem is solved by the application of the developed software-based adaptive algorithms for determining the market value of three evaluation approaches using the results of a multi-level analysis of the real estate market. It was pro-posed the model of automated appraisal, according to it was implemented computerization of appraisal procedures on the

  2. Exponential rarefaction of real curves with many components

    OpenAIRE

    Gayet , Damien; Welschinger , Jean-Yves

    2011-01-01

    21 pages; Given a positive real Hermitian holomorphic line bundle L over a smooth real projective manifold X, the space of real holomorphic sections of the bundle L^d inherits for every positive integer d a L^2 scalar product which induces a Gaussian measure. When X is a curve or a surface, we estimate the volume of the cone of real sections whose vanishing locus contains many real components. In particular, the volume of the cone of maximal real sections decreases exponentially as d grows to...

  3. Application of XML in real-time data warehouse

    Science.gov (United States)

    Zhao, Yanhong; Wang, Beizhan; Liu, Lizhao; Ye, Su

    2009-07-01

    At present, XML is one of the most widely-used technologies of data-describing and data-exchanging, and the needs for real-time data make real-time data warehouse a popular area in the research of data warehouse. What effects can we have if we apply XML technology to the research of real-time data warehouse? XML technology solves many technologic problems which are impossible to be addressed in traditional real-time data warehouse, and realize the integration of OLAP (On-line Analytical Processing) and OLTP (Online transaction processing) environment. Then real-time data warehouse can truly be called "real time".

  4. Memory controllers for real-time embedded systems predictable and composable real-time systems

    CERN Document Server

    Akesson, Benny

    2012-01-01

      Verification of real-time requirements in systems-on-chip becomes more complex as more applications are integrated. Predictable and composable systems can manage the increasing complexity using formal verification and simulation.  This book explains the concepts of predictability and composability and shows how to apply them to the design and analysis of a memory controller, which is a key component in any real-time system. This book is generally intended for readers interested in Systems-on-Chips with real-time applications.   It is especially well-suited for readers looking to use SDRAM memories in systems with hard or firm real-time requirements. There is a strong focus on real-time concepts, such as predictability and composability, as well as a brief discussion about memory controller architectures for high-performance computing. Readers will learn step-by-step how to go from an unpredictable SDRAM memory, offering highly variable bandwidth and latency, to a predictable and composable shared memory...

  5. Exploring Earthquakes in Real-Time

    Science.gov (United States)

    Bravo, T. K.; Kafka, A. L.; Coleman, B.; Taber, J. J.

    2013-12-01

    Earthquakes capture the attention of students and inspire them to explore the Earth. Adding the ability to view and explore recordings of significant and newsworthy earthquakes in real-time makes the subject even more compelling. To address this opportunity, the Incorporated Research Institutions for Seismology (IRIS), in collaboration with Moravian College, developed ';jAmaSeis', a cross-platform application that enables students to access real-time earthquake waveform data. Students can watch as the seismic waves are recorded on their computer, and can be among the first to analyze the data from an earthquake. jAmaSeis facilitates student centered investigations of seismological concepts using either a low-cost educational seismograph or streamed data from other educational seismographs or from any seismic station that sends data to the IRIS Data Management System. After an earthquake, students can analyze the seismograms to determine characteristics of earthquakes such as time of occurrence, distance from the epicenter to the station, magnitude, and location. The software has been designed to provide graphical clues to guide students in the analysis and assist in their interpretations. Since jAmaSeis can simultaneously record up to three stations from anywhere on the planet, there are numerous opportunities for student driven investigations. For example, students can explore differences in the seismograms from different distances from an earthquake and compare waveforms from different azimuthal directions. Students can simultaneously monitor seismicity at a tectonic plate boundary and in the middle of the plate regardless of their school location. This can help students discover for themselves the ideas underlying seismic wave propagation, regional earthquake hazards, magnitude-frequency relationships, and the details of plate tectonics. The real-time nature of the data keeps the investigations dynamic, and offers students countless opportunities to explore.

  6. Real Estate Across the United States (REXUS) Inventory (Building)

    Data.gov (United States)

    General Services Administration — Real Estate Across the United States (REXUS) is the primary tool used by PBS to track and manage the government's real property assets and to store inventory data,...

  7. Automated Real-Time Clearance Analyzer (ARCA), Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The Automated Real-Time Clearance Analyzer (ARCA) addresses the future safety need for Real-Time System-Wide Safety Assurance (RSSA) in aviation and progressively...

  8. Specification and Automated Verification of Real-Time Behaviour

    DEFF Research Database (Denmark)

    Kristensen, C.H.; Andersen, J.H.; Skou, A.

    1995-01-01

    In this paper we sketch a method for specification and automatic verification of real-time software properties.......In this paper we sketch a method for specification and automatic verification of real-time software properties....

  9. Specification and Automated Verification of Real-Time Behaviour

    DEFF Research Database (Denmark)

    Andersen, J.H.; Kristensen, C.H.; Skou, A.

    1996-01-01

    In this paper we sketch a method for specification and automatic verification of real-time software properties.......In this paper we sketch a method for specification and automatic verification of real-time software properties....

  10. FEDERAL REAL PROPERTY: Better Governmentwide Data Needed for Strategic Decisionmaking

    National Research Council Canada - National Science Library

    2002-01-01

    ...) worldwide inventory of federal real property. According to GSAs fiscal year 2000 worldwide inventory report on owned property, over 30 federal agencies own hundreds of thousands of real property assets worth hundreds of billions of dollars...

  11. real exchange rate misalignment and economic performance in ...

    African Journals Online (AJOL)

    ... effects of real exchange rate misalignment on economic performance in Nigeria. .... main factors that impacts on real exchange rate in India .... financial assets and ignores non-economic factor such as .... and fiscal policies to control inflation.

  12. Three Macro Controls Over China’s Real Estate Market

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The first macro control: to cool overheated real estate investment June 2003: The People’s Bank of China issued the Notice on Further Strengthening Credit and Loan Business Management of Real Estate

  13. Internet-accessible real-time weather information system

    Digital Repository Service at National Institute of Oceanography (India)

    Desai, R.G.P.; Joseph, A.; Desa, E.; Mehra, P.; Desa, E.; Gouveia, A.D.

    An internet-accessible real-time weather information system has been developed. This system provides real-time accessibility to weather information from a multitude of spatially distributed weather stations. The Internet connectivity also offers...

  14. A zero-dimensional approach to compute real radicals

    Directory of Open Access Journals (Sweden)

    Silke J. Spang

    2008-04-01

    Full Text Available The notion of real radicals is a fundamental tool in Real Algebraic Geometry. It takes the role of the radical ideal in Complex Algebraic Geometry. In this article I shall describe the zero-dimensional approach and efficiency improvement I have found during the work on my diploma thesis at the University of Kaiserslautern (cf. [6]. The main focus of this article is on maximal ideals and the properties they have to fulfil to be real. New theorems and properties about maximal ideals are introduced which yield an heuristic prepare_max which splits the maximal ideals into three classes, namely real, not real and the class where we can't be sure whether they are real or not. For the latter we have to apply a coordinate change into general position until we are sure about realness. Finally this constructs a randomized algorithm for real radicals. The underlying theorems and algorithms are described in detail.

  15. An integrated technique for developing real-time systems

    NARCIS (Netherlands)

    Hooman, J.J.M.; Vain, J.

    1995-01-01

    The integration of conceptual modeling techniques, formal specification, and compositional verification is considered for real time systems within the knowledge engineering context. We define constructive transformations from a conceptual meta model to a real time specification language and give

  16. Virtual timers in hierarchical real-time systems

    NARCIS (Netherlands)

    Heuvel, van den M.M.H.P.; Holenderski, M.J.; Cools, W.A.; Bril, R.J.; Lukkien, J.J.; Zhu, D.

    2009-01-01

    Hierarchical scheduling frameworks (HSFs) provide means for composing complex real-time systems from welldefined subsystems. This paper describes an approach to provide hierarchically scheduled real-time applications with virtual event timers, motivated by the need for integrating priority

  17. Spying on real-time computers to improve performance

    International Nuclear Information System (INIS)

    Taff, L.M.

    1975-01-01

    The sampled program-counter histogram, an established technique for shortening the execution times of programs, is described for a real-time computer. The use of a real-time clock allows particularly easy implementation. (Auth.)

  18. Real Estate Across the United States (REXUS) (Lease)

    Data.gov (United States)

    General Services Administration — Real Estate Across the United States (REXUS) is the primary tool used by PBS to track and manage the government's real property assets and to store inventory data,...

  19. Success and fail factors in sustainable real estate renovation projects

    NARCIS (Netherlands)

    Volker, L.

    2011-01-01

    Sustainability remains an important issue for the construction industry. Yet, sustainable real estate developments are still considered as highly ambitious projects. To find out how and why sustainable renovation projects actually became sustainable we systematically evaluated 21 leading Dutch real

  20. Real-time subway information for improving transit ridership.

    Science.gov (United States)

    2016-08-01

    In recent years, the standardization of transit schedule information has yielded a dramatic increase in the accessibility of computerized transit schedules and given rise to real-time service schedules. Two such real-time service schedules are the Ge...