Desenvolvimento de HMI e base de dados para dispositivo médico de monitorização de sinais vitais

OpenAIRE

Carvalho, Tiago André Vicente

2012-01-01

O aumento da esperança média de vida associado a uma melhoria dos cuidados de saúde tem contribuído para o envelhecimento da população e para o aumento do número de indivíduos com doenças crónicas. Estas circunstâncias criam uma sobrelotação dos centros responsáveis pela prestação desses cuidados, diminuindo a qualidade do serviço fornecido. No entanto, estas mesmas circunstâncias criam novas oportunidades de negócio com o desenvolvimento de dispositivos e serviços médicos, procurando melh...

AT Cnc: A SECOND DWARF NOVA WITH A CLASSICAL NOVA SHELL

International Nuclear Information System (INIS)

Shara, Michael M.; Mizusawa, Trisha; Zurek, David; Wehinger, Peter; Martin, Christopher D.; Neill, James D.; Forster, Karl; Seibert, Mark

2012-01-01

We are systematically surveying all known and suspected Z Cam-type dwarf novae for classical nova shells. This survey is motivated by the discovery of the largest known classical nova shell, which surrounds the archetypal dwarf nova Z Camelopardalis. The Z Cam shell demonstrates that at least some dwarf novae must have undergone classical nova eruptions in the past, and that at least some classical novae become dwarf novae long after their nova thermonuclear outbursts, in accord with the hibernation scenario of cataclysmic binaries. Here we report the detection of a fragmented 'shell', 3 arcmin in diameter, surrounding the dwarf nova AT Cancri. This second discovery demonstrates that nova shells surrounding Z Cam-type dwarf novae cannot be very rare. The shell geometry is suggestive of bipolar, conical ejection seen nearly pole-on. A spectrum of the brightest AT Cnc shell knot is similar to that of the ejecta of the classical nova GK Per, and of Z Cam, dominated by [N II] emission. Galaxy Evolution Explorer FUV imagery reveals a similar-sized, FUV-emitting shell. We determine a distance of 460 pc to AT Cnc, and an upper limit to its ejecta mass of ∼5 × 10 –5 M ☉ , typical of classical novae.

AT Cnc: A SECOND DWARF NOVA WITH A CLASSICAL NOVA SHELL

Energy Technology Data Exchange (ETDEWEB)

Shara, Michael M.; Mizusawa, Trisha; Zurek, David [Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024-5192 (United States); Wehinger, Peter [Steward Observatory, the University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Martin, Christopher D.; Neill, James D.; Forster, Karl [Department of Physics, Math and Astronomy, California Institute of Technology, 1200 East California Boulevard, Mail Code 405-47, Pasadena, CA 91125 (United States); Seibert, Mark [Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)

2012-10-20

We are systematically surveying all known and suspected Z Cam-type dwarf novae for classical nova shells. This survey is motivated by the discovery of the largest known classical nova shell, which surrounds the archetypal dwarf nova Z Camelopardalis. The Z Cam shell demonstrates that at least some dwarf novae must have undergone classical nova eruptions in the past, and that at least some classical novae become dwarf novae long after their nova thermonuclear outbursts, in accord with the hibernation scenario of cataclysmic binaries. Here we report the detection of a fragmented 'shell', 3 arcmin in diameter, surrounding the dwarf nova AT Cancri. This second discovery demonstrates that nova shells surrounding Z Cam-type dwarf novae cannot be very rare. The shell geometry is suggestive of bipolar, conical ejection seen nearly pole-on. A spectrum of the brightest AT Cnc shell knot is similar to that of the ejecta of the classical nova GK Per, and of Z Cam, dominated by [N II] emission. Galaxy Evolution Explorer FUV imagery reveals a similar-sized, FUV-emitting shell. We determine a distance of 460 pc to AT Cnc, and an upper limit to its ejecta mass of {approx}5 Multiplication-Sign 10{sup -5} M {sub Sun }, typical of classical novae.

Doenças tropicais negligenciadas: uma nova era de desafios e oportunidades

Directory of Open Access Journals (Sweden)

Luiz C. Dias

2013-01-01

Full Text Available In an article recently published in Química Nova, entitled "Chemistry Without Borders" ("Química Sem Fronteiras" [Pinto, A. C.; Zucco, C.; Galembeck, F.; Andrade, J. B.; Vieira, P. C. Quim. Nova 2012, 35, 2092], the authors highlighted the important aspects of science and technology with special emphasis on the field of Chemistry and its contributions toward a more prosperous Brazil of future. As a second step in that direction, this article extends the discussion of a key issue for the country in the framework of the chemistry community through the so called position papers in strategic areas. This document is a part of the contribution of the Brazilian Chemical Society to the World Science Forum to be held in Rio de Janeiro in November 2013. In this context, the present paper provides a brief discussion on neglected tropical diseases (NTDs with emphasis on the current challenges and opportunities towards the development and evolution of the field. NTDs leads to illness, long-term disability or death, and has severe social, economic and psychological consequences for millions of men, women, and children worldwide. In most cases, the available treatments are inadequate and extremely limited in terms of efficacy and safety, leading to an urgent demand for new drugs. In addition to the traditional challenges involved in any drug discovery process, it is widely recognized that there is an innovation gap and a lack of investment for research and development (R&D in the area of NTDs. In the last few decades, methods toward combating, eradication, prevention, and treatment of NTDs have been repeatedly emphasized in the major international agendas. Developments in these strategies and alliances have continued to have an essential impact, particularly in the area of drug discovery, both in Brazil and globally and should be encouraged and supported. Several examples of international activities dedicated to the reduction of the devastating global impact

As novas tecnologias e o ensino da matemática

OpenAIRE

Rocha, Maria Lúcia

2000-01-01

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Este trabalho apresenta uma análise das novas tecnologias como recurso pedagógico para o ensino de matemática. Para isso foi feito uma síntese da história da introdução dos computadores na escola, bem como os tipos de programas que os professores podem encontrar para utilizarem em suas aulas, e ainda uma síntese da informática no ensino da matemática. O trabalho também apresenta uma visão dos Parâmetros Cu...

Las transiciones escolares: una oportunidad de desarrollo integral para niños y niñas

Directory of Open Access Journals (Sweden)

Sara Victoria Alvarado

2009-01-01

Full Text Available En este artículo presentamos los resultados de una investigación sobre las transiciones educativas del hogar al centro de cuidado y de éste al preescolar y la primaria en niños y niñas indígenas de la comunidad Embera Chamí en Riosucio, Caldas, Colombia. Conceptualizamos las transiciones como momentos críticos de cambio que viven los niños y las niñas al pasar de un ambiente a otro, abriendo oportunidades para su desarrollo humano y su aprendizaje para la vida y la escuela, en un estudio de caso cualitativo con enfoque histórico hermenéutico. Los resultados aportan elementos importantes para comprender diversas visiones sobre las transiciones, evidenciando distanciamientos y tensiones entre actores, escenarios y prácticas. Concluimos que las articulaciones son un elemento clave en este proceso.

LA CONSTRUCCIÓN COLECTIVA DE UN PORTAL WEB DE CENTRO. UNA EXPERIENCIA DE INNOVACIÓN SOSTENIBLE

Directory of Open Access Journals (Sweden)

Mª Helena Zapico Barbeito

2010-01-01

Full Text Available Presentamos una experiencia que forma parte de un estudio más amplio que analiza los factores que dificultan o aceleran los procesos de cambio e innovación en los centros educativos cuando se incorporan TIC. En el contexto socio político y económico en que vivimos, la demanda de innovación es un imperativo que afecta a todos los ámbitos sociales. El sistema educativo no es una excepción, de manera que las escuelas están llamadas a subirse también en ese carro mostrando que son innovadoras. Por ello, el análisis de las innovaciones que tienen lugar en su seno es una oportunidad inmejorable para visualizar las condiciones en las que se desarrollan los procesos educativos. Se parte de la idea de que el potencial de cambio que la incorporación de las TIC podría generar, reside, sobre todo, en la manera en que están involucradas en el proyecto del centro y en el trabajo de reflexión sobre sus potencialidades educativas. Desde una perspectiva de investigación acción colaborativa, se construyeron cuatro estudios de casos: uno de un Centro de Educación Infantil y Primaria (C.E.I.P., un Instituto de Educación Secundaria (I.E.S., un Colegio Público Integrado (C.P.I. y un Centro Rural Agrupado (C.R.A.. En este trabajo, abordaremos el análisis de una experiencia en un Centro Rural Agrupado (C.R.A. de Galicia, en el que están integradas nueve escuelas, donde se imparte el segundo ciclo de Educación Infantil y primero de Primaria. Nuestra intención es la de dar cuenta de algunos de los significados de innovación sostenible en la experiencia de construcción del portal del centro como un espacio educativo.

Nova diagnostics summary

International Nuclear Information System (INIS)

Slivinsky, V.W.; Drake, R.P.

1985-01-01

The authors intend that Nova be the best diagnosed ICF research facility in operation today. The authors experience in providing advanced diagnostics for previous laser systems will be extended at Nova, and will be challenged by the development of new instrumentation to diagnose the more advanced targets made possible by this powerful laser. Previous experience has shown that to understand target performance, the authors must have as complete a set of diagnostics as possible. The Nova diagnostics are divided into two sets: the basic set required for the initial Nova experiments and the more advanced set for later, generally more complex, experiments. The basic set will be operational for the first Nova shots; it was a Nova line item funded with Nova construction money. This basic set is presented in a table

REQUALIFICAÇÃO URBANA NO CENTRO DE FORTALEZA (CE

Directory of Open Access Journals (Sweden)

Francisco Clébio Rodrigues Lopes

2015-08-01

Full Text Available A descentralização em Fortaleza gerou perda de população residente,desinvestimentos e expansão do comércio ambulante na Área Central nas últimastrês décadas. Face à problemática, um grupo formado por governo, empresários esociedade civil tem se reunido desde o início da década de 1990 para proporpolíticas de recuperação do Centro e, dessa forma, atrair investidores. Os projetosse interessam pela melhoria do espaço público e refletem tendências globais, porisso se baseiam numa aproximação entre o setor público e o privado mediante oestabelecimento de parcerias, asseguradas por mecanismos jurídicos. O objetivodeste artigo é analisar propostas de requalificação do bairro central. Assim,investigações em jornais, revisão bibliográfica e análise dos discursos proferidosno Fórum Viva Centro foram utilizados como instrumentos de pesquisa. Aconclusão foi que os planos de renovação combinam estratégias imobiliárias comcircuitos de valorização nas suas novas frentes de expansão.

Typical examples of classical novae

Science.gov (United States)

Hack, Margherita; Selvelli, Pierluigi; Bianchini, Antonio; Duerbeck, Hilmar W.

1993-09-01

Because of the very complicated individualistic behavior of each nova, we think it necessary to review the observations of a few well-observed individuals. We have selected a few objects of different speed classes, which have been extensively observed. They are: V1500 Cygni 1975, a very fast nova; V603 Aql 1918, fast nova; CP Pup 1942, fast nova; GK Per 1901, fast nova; V 1668 Cyg 1979, moderately fast nova; FH Ser 1970, slow nova; DQ Her 1934, slow nova; T Aur 1891, slow nova; RR Pic 1925, slow nova; and HR Del 1967, very slow nova.

Nova outburst modeling and its application to the recurrent nova phenomenon

International Nuclear Information System (INIS)

Sparks, W.M.; Starrfield, S.; Truran, J.

1985-12-01

The thermonuclear runaway (TNR) theory for the cause of the common novae is reviewed. Numerical simulations of this theory were performed using an implicit hydrodynamic Lagrangian computer code. Relevant physical phenomena are explained with the simpler envelope-in-place calculations. Next the models that include accretion are discussed. The calculations agree very well with observations of common novae. The observational differences between common novae and recurrent novae are examined. We propose input parameters to the TNR model which can give the outburst characteristics of RS Ophiuchi and discuss the implications. This review is concluded with a brief discussion of two current topics in novae research: shear mixing on the white dwarf and Neon novae. 36 refs., 4 figs

POLÍTICAS PÚBLICAS URBANAS: o caso do centro de Santos

Directory of Open Access Journals (Sweden)

André da Rocha Santos

2008-01-01

Full Text Available This article evaluates the process of the urban revitalization center of Santos. Its ́ analysis object is the Centro, Paquetá, Vila Nova, Valongo and part of Vila Mathias neighborhoods. Its ́ objective is to describe the mentioned process since the approval of the 1998 Managing Plan until the current days. The introduction points out the municipal public power ́s and planning secretariat ́s role in the conduction of the public policies involving these areas. The second section of this article analyses certain aspects of the "Alegra Centro Program" which ́s objective is to support the enterprises implantation and the functioning activities directed to commerce and the tourism, among the evaluation of the urban landscape and the cultural local patrimony. The third part of this paper deals with the public power ́s projects and interventions developed and spread through marketing actions. This article ́s fourth section shows the general housing matter in the central area and its ́ precarious situation. Finally, the conclusion evaluates the process of urban revitalization of the Brazilian city of Santos and the city ́s habitation policies.

Novas tecnologias na educação escolar do campo: o discurso verbal- visual e mediações a partir do blog jovem ceier- ser jovem, ser agricultor sustentável em ação do centro estadual integrado de educação rural de Vila Pavão-ES.

OpenAIRE

OLIVEIRA, M. M. P.

2013-01-01

Esta pesquisa de doutorado refere-se ao estudo sobre as novas tecnologias na educação do campo no Estado do Espírito Santo, (ES), Brasil. Nosso objeto de pesquisa está focado no blog Jovem Ceier do Centro Integrado de Educação Rural de Vila Pavão - ES (Ceier). Durante a pesquisa investigamos como essa juventude campesina dialoga com a cultura digital da contemporaneidade. Buscamos no diálogo com esses alunos do Ensino Médio dessa escola desvelar os discursos verbo-visuais e mediações produzid...

O visível e o invisível da paisagem social: uma leitura da revitalização do centro de Goiânia

Directory of Open Access Journals (Sweden)

Maria Eliana Jubé Ribeiro

2007-12-01

Full Text Available A cidade é por excelência o lugar das possibilidades, palco das realizações de vita activa preconizada por Hannah Arendt, é, também, o espaço da diversidade, das dualidades, da segregação, enfim, é o espaço das visibilidades e das invisibilidades. A materialização dessa realidade é bastante concreta nos espaços públicos urbanos, onde a vida cotidiana impõe regras e formas de convivência para além, ou a despeito, do que está preconizado nos planos e projetos urbanos, instituindo, a partir das possibilidades que são dadas, uma nova paisagem social. Este trabalho faz uma leitura de dois espaços públicos da cidade de Goiânia, que estiveram presentes de forma marcante ao longo de toda a sua história, nesses mais de 70 anos, e que sofreram recentemente modificações, com base em um projeto intitulado “Revitalização do Centro de Goiânia”. Na perspectiva de compreender como a paisagem social se realiza, faço uma breve revisão bibliográfica sobre o tema, para a partir destes dados, verificar quais são as oportunidades reais de transformação e, principalmente, quais são as possibilidades de imprimir, a esses espaços, o caráter de ser os lugares da conquista e manutenção dos direitos do cidadão.

Dal Centro Storico alla Città Storica: la dimensione progettuale della conservazione − Il caso di Roma

OpenAIRE

Elio Trusiani

2004-01-01

Com a adoção do Plano Regulador, Roma finalmente adquiriu uma nova perspectiva para construir o seu desenvolvimento, partir de um sistema histórico-ambiental tutelado e valorizado (base concreta da sustentabilidade), valorizando a reorganização funcional e espacial das suas estruturas subterrâneas. Uma cidade projetada em uma dimensão metropolitana e organizada segundo um modelo policêntrico – no qual se chama atenção aos trabalhos regulares e superamentos do velho conceito de centro “históri...

The classical nova outburst

International Nuclear Information System (INIS)

Starrfield, S.G.

1988-01-01

The classical nova outburst occurs on the white dwarf component in a close binary system. Nova systems are members of the general class of cataclysmic variables and other members of the class are the Dwarf Novae, AM Her variables, Intermediate Polars, Recurrent Novae, and some of the Symbiotic variables. Although multiwavelength observations have already provided important information about all of these systems, in this review I will concentrate on the outbursts of the classical and recurrent novae and refer to other members of the class only when necessary. 140 refs., 1 tab

RELAÇÕES DE GÊNERO, INFERTILIDADE E NOVAS TECNOLOGIAS REPRODUTIVAS

Directory of Open Access Journals (Sweden)

Rosana Machin Barbosa

2000-01-01

Full Text Available O texto aborda as novas tecnologias reprodutivas (NTRs e a infertilidade através da experiência de mulheres e homens que buscaram uma gestação por meio dessas técnicas. Os relatos apresentados estão baseados em pesquisa realizada, durante o ano de 1998, em dois serviços voltados ao tratamento de situações de infertilidade: um público — Hospital Pérola Byington, em São Paulo, e outro privado — Cenafert (Centro de Endoscopia e Assistência à Fertilidade, em Brasília/DF. As NTRs são enfocadas no âmbito da tecnologia, da saúde reprodutiva e das relações entre os gêneros.

Neon novae, recurrent novae, and type I supernovae

International Nuclear Information System (INIS)

Starrfield, S.; Sparks, W.M.; Truran, J.W.; Shaviv, G.; Illinois Univ., Urbana, IL; Technion-Israel Inst. of Tech., Haifa

1989-01-01

Over the past few years, we have been investigating the effects of accretion onto massive white dwarfs and its implications for their growth in mass toward the Chandrasekhar limit, in attempts to identify a possible relationship between SN I and novae. In our studies we have considered accretion at various mass accretion rates onto a variety of different white dwarf masses. We have found that there is a critical white dwarf mass above which a significant fraction of the accreted mass can remain on the white dwarf after the outburst. Below this value of the white dwarf mass, all of the accreted mass, plus core material dredged up into the envelope, is ejected as a result of the explosion. Our latest results include accretion and boundary layer heating produced by the infalling material. From these studies, we have identified some members of the class of recurrent novae, those involving a thermonuclear runaway, as the novae that are occurring on very massive white dwarfs and evolving toward an SN I explosion. One of the outgrowths of our uv studies of novae in outburst has been the identification of a class of novae which eject material that is very rich in the elements from oxygen to aluminum. We have shown that these outbursts occur on ONeMg white dwarfs, which are necessarily very massive white dwarfs. 11 refs

Symbiotic Novae

OpenAIRE

Mikolajewska, Joanna

2010-01-01

The symbiotic novae are thermonuclear novae in symbiotic binary systems -- interacting binaries with evolved red giant donors, and the longest orbital periods. This paper aims at presenting physical characteristics of these objects and discussing their place among the whole family of symbiotic stars.

A statistical analysis of IUE spectra of dwarf novae and nova-like stars

Science.gov (United States)

Ladous, Constanze

1990-01-01

First results of a statistical analysis of the IUE International Ultraviolet Explorer archive on dwarf novae and nova like stars are presented. The archive contains approximately 2000 low resolution spectra of somewhat over 100 dwarf novae and nova like stars. Many of these were looked at individually, but so far the collective information content of this set of data has not been explored. The first results of work are reported.

LA SENDA DEL SABER EN EL CENTRO HISTÓRICO DE PUEBLA, MÉXICO: UNA PROPUESTA DE TURISMO CULTURAL A TRAVÉS DE MICRONÓDULOS TURÍSTICOS EN CIUDADES PATRIMONIALES.

OpenAIRE

Valdez Muñoz, Raúl

2015-01-01

Las ciudades con riqueza histórica y patrimonial representan una excelente opción de destino cultural que ofrecen al turista un amplio abanico de atractivos y experiencias muy diversas. La ciudad de Puebla, en la región central de México, posee un centro histórico declarado Patrimonio de la Humanidad por la UNESCO en 1987. Dentro de su zona monumental se encuentra un polígono urbano denominado Senda del Saber, el cual, considerado como producto turístico cultural, representa una oportunidad p...

Oportunidades to reduce overweight and obesity in Mexico?

Science.gov (United States)

Andalón, Mabel

2011-09-01

This paper investigates the causal effect of Oportunidades, a conditional cash-transfer program in Mexico, on overweight and obesity of adolescents living in poor rural areas. Affecting youth weight was not a goal of this program. However, health economics research suggests that the provision of schooling, health information sessions and sizable cash transfers to Oportunidades participants could have substantially changed their overweight and obesity rates. Exploiting an exogenous jump in program participation by means of a fuzzy Regression Discontinuity (RD) design, the evidence of this paper suggests that Oportunidades decreased obesity among participant women. The identified local average treatment effect (LATE) at the threshold for program eligibility suggests that female obesity would decrease if the program was expanded to cover slightly better-off households. The design of the program does not allow disentangling the causal pathways that contributed to the lower prevalence of obesity among women, but the effect likely resulted from increased access to information and schooling, improved dietary quality, increased monitoring of health outcomes and (possibly) increased physical activity. Suggestive evidence shows that teen pregnancy rates were higher among non-participants. Therefore, weight gain after childbirth might also explain higher obesity rates among non-participant females. Copyright © 2011 John Wiley & Sons, Ltd.

Nova target experiments

International Nuclear Information System (INIS)

Drake, R.P.

1985-11-01

The Nova laser, at the Lawrence Livermore National Laboratory, provides unique opportunities for target experiments. It has unprecedented energy on target and significant flexibility. The paper presented by John Hunt described the capabilities and the status of Nova. This paper discusses plans for future experiments using Nova, and the present status of target experiments. We plan to perform high-quality physics experiments that exploit the unique capabilities of Nova. Because this is our goal, we are fielding an extensive array of well-characterized target diagnostics to measure the emissions from the target. The first section of this paper discusses the basic target diagnostics. We are also taking care to quantify the performance of the laser

O comércio eletrônico e as novas formas de informação

OpenAIRE

Melo, Marco Antônio Machado Ferreira de

2002-01-01

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção. O livro convencional e o eletrônico e as possíveis mudanças, dentro do comércio eletrônico, constituem-se no tema central deste trabalho. O estudo envolve importantes proposições relacionados ao comércio eletrônico, enfatizando as inovações oriundas da tecnologia de comunicação e seus reflexos no modus operandi humano, suas conseqüências e as novas forma...

Descubrimiento de oportunidades empresariales: capital humano, capital social y género

Directory of Open Access Journals (Sweden)

Nuria González-Álvarez

2011-09-01

Full Text Available El objetivo de este trabajo es analizar cuáles son los factores que influyen sobre la segunda de las etapas del proceso de creación empresarial establecidas por Shane y Venkataraman (2000, es decir, sobre el descubrimiento de oportunidades de creación empresarial. Para ello, por un lado, se analiza la influencia que pudiera tener sobre esta etapa tanto el capital humano como el capital social. Por otra parte, también se pretende analizar la existencia de diferencias de género en el descubrimiento de oportunidades empresariales. Para ello, se utiliza una muestra de 28.888 individuos provenientes del Proyecto Gem (2009, que permite concluir que los individuos que poseen un mayor stock de capital humano, así como aquellos que están inmersos en amplias redes sociales, descubrirán más oportunidades de creación empresarial. asimismo, este trabajo muestra que existen diferencias de género en cuanto al descubrimiento de oportunidades de creación empresarial.

Radiation of dwarf novae

International Nuclear Information System (INIS)

Bruch, A.

1987-01-01

The nature of dwarf novae with their components white dwarf star, cool star, accretion disk, boundary layer and hot spot is investigated. It is shown that very different physical states and processes occur in the components of dwarf novae. Spectroscopical and photometrical observations are carried out. For better understanding the radiation portions of the single dwarf novae components are separated from the total electromagnetic spectrum recieved from the dwarf novae. The model assumptions are compared with the observations and verified

Estructura de oportunidades y comportamiento emprendedor: Empresarios argentinos en Cataluña, España

Directory of Open Access Journals (Sweden)

Fabiola Baltar

2013-01-01

Full Text Available El objetivo de este artículo es estudiar los factores asociados a las características de los emprendedores argentinos en Cataluña, y los tipos de emprendimientos que crean (oportunidad-necesidad. La hipótesis es que el empresario inmigrante de los países en desarrollo puede detectar oportunidades que los empresarios nativos no visualizan en épocas de crisis, y no sólo iniciar empresas motivados por necesidad. Esta detección de oportunidades es explicada, por un lado, por sus capacidades empresariales adquiridas en contextos turbulentos; y por otro, por el marco institu­ cional del país receptor que facilita la generación de oportunidades empresariales. Se diseñó un método mixto que permitió construir tipologías de emprendedores e identificar casos de oportunidad por medio de entrevistas a profundidad. Los re­ sultados abren nuevas perspectivas acerca del fenómeno emprendedor inmigrante en España.

La oportunidad WebQuest

OpenAIRE

Fierro Monteagudo, José Luis

2005-01-01

Los procesos creativos permiten el desarrollo de unas relaciones de enseñanza-aprendizaje mucho más fecundas que los procesos de repetición o acumulación. Al crear, en el más amplio sentido de la palabra, los alumnos se documentan, comparan, sintetizan, reflexionan, se posicionan, expresan, crecen y conocen. La creación abre un ciclo extraordinario de aprendizaje significativo. Las WebQuest son una excelente vía para canalizar los procesos creativos y suponen un estímulo y una oportunidad ext...

Incorporação imobiliária e a influência da nova ordem contratual

OpenAIRE

Alessandro Marinelli de Oliveira

2012-01-01

A incorporação imobiliária encontra sua relevância socioeconômica na expansão dos centros urbanos, no crescimento do mercado imobiliário, na falta de habitação, na alta do preço dos imóveis, e, mais presentemente, nos estímulos do governo federal à habitação urbana. Pretendeu-se neste trabalho, discutir as repercussões jurídicas na Lei das Incorporações à luz da nova ordem contratual. Para tanto, foi necessário investigar, inicialmente, quais eram os princípios fundamentais da teoria contratu...

Spectral evolution of Nova V400 Per (1974) and Nova V373 Sct (1975)

International Nuclear Information System (INIS)

Rosino, L.

1978-01-01

Photographic and spectroscopic observations of the two galactic novae, V400 Per and V373 Sct, which appeared in 1974 and 1975, have been carried out at Asiago. The light curves of the two novae were characterized by the presence of brightness oscillations during the early decline. The spectral evolution was quite normal: the spectra showed at first, over a relatively strong continuum, wide emission bands of moderate excitation, accompanied by blueshifted absorptions, with radial velocities of - 1760 kms -1 (Nova Per) and - 1260 kms -1 (Nova Sct). Later, after the novae entered the nebular stage, the continuum weakened, the absorption disappeared and the novae displayed the usual emission spectrum, with permitted and forbidden lines of high excitation ([O III], N III, He I, He II). Forbidden lines of Fe VI and Fe VII - and in Nova Sct, also Fe X and A X - were present for a time, but they soon disappeared, so that at the end the spectrum was dominated by the [O III] nebular lines, even stronger than Hα. (Auth.)

Otimização da Contratação do Fornecimento de Energia Elétrica

OpenAIRE

Sousa, Vítor Manuel Neves de

2016-01-01

A nova realidade do sector elétrico a partir da desverticalização da sua cadeia de valor e abertura à concorrência das atividades de Produção e Comercialização fez emergir novas oportunidades para os consumidores de energia elétrica. Fruto dessas novas oportunidades, pretende-se com a presente dissertação simular e quantificar a redução de custos com a aquisição de energia elétrica, obtida a partir da análise e otimização dos contratos de energia elétrica em instalações reais. O objetiv...

Novae news

CERN Document Server

2012-01-01

As announced in the previous Bulletin, Novae has opened a new snack bar on the Flagstaff car park, just a few metres from CERN's reception area (Building 33).   Just a few metres from the CERN Reception, the new Novae snack point welcomes visitors and CERNois. Opening hours Currently: Monday to Friday, 8 a.m. to 4 p.m. From September: Monday to Friday, 7:45 a.m. to 5 p.m.; Saturdays from 8 a.m. to 2 p.m. The snack bar selection includes breakfast, starting at 2.70 CHF, cold dishes from 5 CHF, and hot dishes from 6 CHF.   Novae has also installed a 24-hour-a-day food vending machine in the CERN hostel (Building 39) and in Building 13. You can buy pasta and cooked dishes for 6.50 CHF to 8 CHF. In addition, a groceries vending machine has been installed in the main building, just across from the news kiosk. Nearly 60 different items are available around the clock. Finally, Novae has introduced a new payment system in several buildings on the Meyrin site. It accepts credit ca...

Long-term cycles in old Novae

International Nuclear Information System (INIS)

Shara, M.M.; Potter, M.; Shara, D.J.

1989-01-01

Three of the oldest recovered novae were monitored with a CCD camera almost nightly for six weeks. The cyclic variability reported by Della Valle and Rosino (1987) for Nova Oph 1848 is confirmed. A similar variability is also suggested for Nova Cyg 1876, though this system exhibits more random flickering than Nova Oph. No secular variability is seen in Nova Sge 1783. 12 refs

A pesquisa em saúde e os objetivos do milênio: desafios e oportunidades globais, soluções e políticas nacionais

Directory of Open Access Journals (Sweden)

Morel Carlos M.

2004-01-01

Full Text Available Saúde, ciência e tecnologia são requisitos para o desenvolvimento econômico e social. Os Objetivos de Desenvolvimento do Milênio da ONU para 2015 representam um imenso desafio para os países em desenvolvimento. Esses países terão de organizar sistemas de pesquisa em saúde baseados em prioridades sanitárias e assegurar a incorporação dos resultados às políticas e ações de saúde. Avanços na área biomédica, em particular em genômica, abrem novas oportunidades, mas impõem desafios adicionais. O Brasil, possuidor de um forte parque industrial e uma vigorosa comunidade científica, tem capacidade para desenvolver um sistema de pesquisas em saúde capaz de contribuir efetivamente para o cumprimento das metas da ONU.

Nova frequency conversion and focusing system

International Nuclear Information System (INIS)

Summers, M.A.; Seppala, L.G.; Williams, J.D.

1985-01-01

New developments in crystal array technology provided significant improvements in the mechanical design and optical performance of the Nova 2 omega/3 omega array hardware. The final Nova array configuration was tested on the Novette laser and on the first arm of Nova. Ten Nova 2 omega/3 omega crystal arrays were assembled and tested for crystal alignment and wave front distortion before installation on the Nova target chamber. Ten Nova focus lens positioners were assembled and tested last year. The positioning accuracy and repeatability of each assembly were evaluated before installation on the target chamber. A cylindrical focusing system was also developed for installation in the Nova lens positioner assembly. Finally, 10 completed frequency conversion and focusing systems were activated

Necesidades y motivaciones de los estudiantes de educación permanente en España. El caso del Centro de Educación Permanente Valle del Guadiato en Córdoba

Directory of Open Access Journals (Sweden)

Beatriz del V. Medina F

2013-05-01

Full Text Available El objetivo de la investigación en la que está basado el artículo fue identificar las necesidades y las motivaciones de los estudiantes del Centro de Educación Permanente (CEPER Valle del Guadiato de Córdoba, España. Se parte de diferentes teorías para su fundamentación, como las aportadas por Maslow (2005, McClelland (1989, García Aretio (1988, Paz (1984, Palladino (1981, entre otros. Se utilizó la metodología comparada cuyas unidades de comparación se corresponden con las unidades espaciales, que en este estudio son los municipios: Belmez, Espiel, Fuente Obejuna, Peñarroya-Pueblonuevo, Villanueva del Rey y Villaviciosa de Córdoba. Para la recogida de datos se utiliza el estudio documental, el cuestionario escrito y la observación cualitativa. El universo poblacional del CEPER Valle del Guadiato lo conformaron 606 personas adultas del período escolar 2011-2012 (592 estudiantes, 14 maestros, siendo la muestra de 265 personas (251 estudiantes, 14 maestros. Entre las principales conclusiones destacan que las necesidades sociales, laborales y personales de los estudiantes del Centro objeto de estudio se derivan básicamente del deseo de aprender, del deseo de superación personal, y del interés por el tema. Las motivaciones giran en torno a la oportunidad de ocupar sus tiempos libres, a la posibilidad de tener mejores oportunidades de encontrar trabajo, y al apoyo de la familia.

Necesidades y motivaciones de los estudiantes de educación permanente en España. El caso del Centro de Educación Permanente Valle del Guadiato en Córdoba

Directory of Open Access Journals (Sweden)

Beatriz del V. Medina F

2013-01-01

Full Text Available El objetivo de la investigación en la que está basado el artículo fue identifi-car las necesidades y las motivaciones de los estudiantes del Centro de Educación Permanente (CEPER Valle del Guadiato de Córdoba, España. Se parte de dife-rentes teorías para su fundamentación, como las aportadas por Maslow (2005,McClelland (1989, García Aretio (1988, Paz (1984, Palladino (1981, entre otros. Se utilizó la metodología comparada cuyas unidades de comparación se co-rresponden con las unidades espaciales, que en este estudio son los municipios: Belmez, Espiel, Fuente Obejuna, Peñarroya-Pueblo nuevo, Villanueva del Rey y Villaviciosa de Córdoba. Para la recogida de datos se utiliza el estudio documental, el cuestionario escrito y la observación cualitativa. El universo poblacional del “CEPER Valle del Guadiato” lo conformaron 606 personas adultas del período escolar 2011-2012 (592 estudiantes, 14 maestros, siendo la muestra de 265 personas (251 estudiantes, 14 maestros. Entre las principales conclusiones destacan que las necesidades sociales, laborales y personales de los estudiantes del Centro objeto de estudio se derivan básicamente del deseo de aprender, del deseo de superación personal, y del interés por el tema. Las motivaciones giran en torno a la oportunidad de ocupar sus tiempos libres, a la posibilidad de tener mejores oportunidades de encontrar trabajo, y al apoyo de la familia.

Uranium in Nova Scotia: a background summary for the uranium inquiry, Nova Scotia

International Nuclear Information System (INIS)

1982-01-01

Since the mid 1970's Nova Scotia has experienced increased exploration for a number of commodities including uranium. The exploration activity for uranium has resulted in discovery of significant occurrences of the element. It became obvious to the Government of Nova Scotia that a segment of the population of the Province is concerned about the potential hazards associated with the exploration, mining and milling stages of the uranium industry. Public concern has resulted in the appointment of a Commissioner under the Public Inquiries Act of Nova Scotia to inquire and make recommendations to the Governor-in-Council on all aspects of exploration, development, mining, processing, storage, waste management and transportation of uranium in any form. The regulation of mineral exploration and mining activities is carried out by the Nova Scotia Department of Mines and Energy through the Mineral Resources Act of the Province of Nova Scotia. The regulation of the special radioactive aspects involved in the mining and processing of uranium ore is the responsibility of the federal Atomic Energy Control Board. The purposes of this report is to: outline the history of uranium exploration in Nova Scotia; summarize the results of geological surveys by provincial and federal government agencies, universities and exploration companies which document the natural levels of radioactivity in the Province; briefly outline the physical and chemical characteristics of uranium and thorium which make these elements unique and a potential environmental and health concern; outline chronologically the steps taken by the Nova Scotia Department of Mines and Energy to monitor and regulate uranium exploration activities; classify the types of uranium deposits known to occur in Nova Scotia and describe their main geological features; outline the role of the Nova Scotia Department of Mines and Energy in the regulation of mining activities in the Province. The report is written for the interested

Macrofactores determinantes de la infestación por Aedes aegypti en centros laborales del municipio de Santiago de Cuba

Directory of Open Access Journals (Sweden)

Lino Robert Larrea Aguilera

2014-04-01

Full Text Available Se efectuó un estudio analítico, de casos y controles, de 116 centros laborales del municipio de Santiago de Cuba, durante junio del 2011, para identificar los macrofactores determinantes en los índices de infestación por Aedes aegypti en tanques bajos y elevados, cisternas y otros depósitos de agua sin condiciones de hermeticidad, que se convierten en focos generadores del mosquito. Para ello se seleccionaron 48 instituciones con criaderos (casos y 96 sin estos (2 controles por caso, además de los macrofactores: comportamiento de los trabajadores y la comunidad, agentes medioambientales y organizacionales de la entidad laboral y del Programa Nacional para la Erradicación del Mosquito Aedes aegypti. En la serie los resultados se validaron mediante la oportunidad relativa, el riesgo atribuible en expuesto porcentual y la diferencia de medias, lo cual permitió concluir que el control adecuado de los tanques bajos y elevados no protegidos, el funcionamiento del autofocal laboral, la limpieza y desobstrucción de los tragantes y drenes, de los solares yermos o terrenos enyerbados, así como la elevación de la calidad del trabajo de los operarios A, lograrían reducir la infestación en los centros laborales

Effect of the conditional cash transfer program Oportunidades on vaccination coverage in older Mexican people

Science.gov (United States)

2013-01-01

Background Immunization is one of the most effective ways of preventing illness, disability and death from infectious diseases for older people. However, worldwide immunization rates are still low, particularly for the most vulnerable groups within the elderly population. The objective of this study was to estimate the effect of the Oportunidades -an incentive-based poverty alleviation program- on vaccination coverage for poor and rural older people in Mexico. Methods Cross-sectional study, based on 2007 Oportunidades Evaluation Survey, conducted in low-income households from 741 rural communities (localities with <2,500 inhabitants) of 13 Mexican states. Vaccination coverage was defined according to three individual vaccines: tetanus, influenza and pneumococcal, and for complete vaccination schedule. Propensity score matching and linear probability model were used in order to estimate the Oportunidades effect. Results 12,146 older people were interviewed, and 7% presented cognitive impairment. Among remaining, 4,628 were matched. Low coverage rates were observed for the vaccines analyzed. For Oportunidades and non-Oportunidades populations were 46% and 41% for influenza, 52% and 45% for pneumococcal disease, and 79% and 71% for tetanus, respectively. Oportunidades effect was significant in increasing the proportion of older people vaccinated: for complete schedule 5.5% (CI95% 2.8-8.3), for influenza 6.9% (CI95% 3.8-9.6), for pneumococcal 7.2% (CI95% 4.3-10.2), and for tetanus 6.6% (CI95% 4.1-9.2). Conclusions The results of this study extend the evidence on the effect that conditional transfer programs exert on health indicators. In particular, Oportunidades increased vaccination rates in the population of older people. There is a need to continue raising vaccination rates, however, particularly for the most vulnerable older people. PMID:23835202

PRODUÇÃO DO ESPAÇO URBANO: NORTH SHOPPING NA DINÂMICA DE NOVAS CENTRALIDADES EM FORTALEZA- CE

Directory of Open Access Journals (Sweden)

Tiago Estevam Gonçalves

2011-04-01

Full Text Available Esta pesquisa tem como objetivo analisar a formação das novas centralidades em Fortaleza e sua relação com os shopping centers, tendo como shopping em destaque: North Shopping (inaugurado em 1991, localizado na avenida Bezerra de Menezes . No campo metodológico, realizaram-se levantamentos bibliográficos sobre a formação novas centralidades, o processo de produção do espaço urbano fortalezense incentivado pelo setor terciário e shopping center que contribuíram para o entendimento da transformação da cidade, além disso, realizamos visitamos e entrevistas no Norh Shopping. Uma das primeiras áreas centrais a se desenvolver além do Centro tradicional foi a da Aldeota incentivada pelo Center Um (instalado em 1974, na avenida Santos Dumont. Desde a formação das primeiras novas centralidades até o período atual sempre existiu uma relação intrínseca entre estas com os shoppings. Estes equipamentos modernos (shoppings aparecem com novos espaços de consumo ou novos consumos de espaço que cria e recria novas formas para atrair as pessoas ao consumo, considerando o consumir como signo de felicidade. Nesta perspectiva podemos afirmar que as atividades terciárias e os equipamentos modernos de consumo atuam no crescimento e na organização do espaço urbano, assim geram uma dinâmica comercial em Fortaleza.

The NOvA Technical Design Report

International Nuclear Information System (INIS)

Ayres, D.S.; Drake, G.R.; Goodman, M.C.; Grudzinski, J.J.; Guarino, V.J.; Talaga, R.L.; Zhao, A.; Stamoulis, P.; Stiliaris, E.; Tzanakos, G.; Zois, M.

2007-01-01

Technical Design Report (TDR) describes the preliminary design of the NOvA accelerator upgrades, NOvA detectors, detector halls and detector sites. Compared to the March 2006 and November 2006 NOvA Conceptual Design Reports (CDR), critical value engineering studies have been completed and the alternatives still active in the CDR have been narrowed to achieve a preliminary technical design ready for a Critical Decision 2 review. Many aspects of NOvA described this TDR are complete to a level far beyond a preliminary design. In particular, the access road to the NOvA Far Detector site in Minnesota has an advanced technical design at a level appropriate for a Critical Decision 3a review. Several components of the accelerator upgrade and new neutrino detectors also have advanced technical designs appropriate for a Critical Decision 3a review. Chapter 1 is an Executive Summary with a short description of the NOvA project. Chapter 2 describes how the Fermilab NuMI beam will provide a narrow band beam of neutrinos for NOvA. Chapter 3 gives an updated overview of the scientific basis for the NOvA experiment, focusing on the primary goal to extend the search for ν μ → ν e oscillations and measure the sin 2 (2θ 13 ) parameter. This parameter has not been measured in any previous experiment and NOvA would extend the search by about an order of magnitude beyond the current limit. A secondary goal is to measure the dominant mode oscillation parameters, sin 2 (2θ 23 ) and Δm 32 2 to a more precise level than previous experiments. Additional physics goals for NOvA are also discussed. Chapter 4 describes the Scientific Design Criteria which the Fermilab accelerator complex, NOvA detectors and NOvA detector sites must satisfy to meet the physics goals discussed in Chapter 3. Chapter 5 is an overview of the NOvA project. The changes in the design relative to the NOvA CDR are discussed. Chapter 6 summarizes the NOvA design performance relative to the Design Criteria set out

Climate change in Nova Scotia : a background paper to guide Nova Scotia's climate change action plan

International Nuclear Information System (INIS)

2007-10-01

Climate change causes changes in the temperature of the earth, the level of the sea, and the frequency of extreme weather conditions. The province of Nova Scotia recently released an act related to environmental goals and sustainable prosperity. Addressing climate change is a key element in achieving Nova Scotia's sustainable prosperity goals outlined in the act. The Nova Scotia Department of Energy is working towards developing both policy and action, to help meet its target of a 10 per cent reduction in greenhouse gases from 1990 levels by the year 2020. Two major plans are underway, notably a climate change action plan and a renewed energy strategy. This report provided background information on Nova Scotia's climate change action plan. It discussed climate change issues affecting Nova Scotia, air pollutants, energy sources in Nova Scotia, energy consumers in the province, and Nova Scotia's approach to climate change. The report also discussed actions underway and funding sources. It was concluded that in order for the climate change action plan to be successful, Nova Scotians must use energy more efficiently; use renewable energy; use cleaner energy; and plan for change. 13 refs., 2 tabs., 6 figs., 4 appendices

LOS CENTROS DE DESARROLLO CIENTÍFICO Y HUMANÍSTICO: REALIDAD O UTOPÍA CASO: ULA, LUZ, UNEFM

Directory of Open Access Journals (Sweden)

Mercedes Carrasquero

1999-07-01

Full Text Available Este artículo presenta un estudio sobre la característica y particularidades de los centros de desarrollo científicos y humanístico (CDCH de la Universidad de los Andes, Universidad del Zulia y la Universidad Nacional Experimental "francisco de Mirando". Dado que la universidad es la casa de la sociedad, tiene el deber insoluble de participar en el desarrollo económico, social, cultural, político y tecnológico nacional y regional. De allí urge la necesidad de visualizar dentro de un escenario que promocione la actividad científica y académica articulada a las exigencias y requerimientos de la sociedad. Por eso se impone una revisión de las condiciones actuales e inmediatas futuras de los CDCH a objeto de potenciar sus fortalezas y oportunidades y atender con prontitud sus debilidades y amenazas.

The NOvA Technical Design Report

Energy Technology Data Exchange (ETDEWEB)

Ayres, D.S.; Drake, G.R.; Goodman, M.C.; Grudzinski, J.J.; Guarino, V.J.; Talaga, R.L.; Zhao, A.; /Argonne; Stamoulis, P.; Stiliaris, E.; Tzanakos, G.; Zois, M.; /Athens U. /Caltech /UCLA /Fermilab /College de France /Harvard U. /Indiana U. /Lebedev Inst. /Michigan State U. /Minnesota U., Duluth /Minnesota U.

2007-10-08

Technical Design Report (TDR) describes the preliminary design of the NOvA accelerator upgrades, NOvA detectors, detector halls and detector sites. Compared to the March 2006 and November 2006 NOvA Conceptual Design Reports (CDR), critical value engineering studies have been completed and the alternatives still active in the CDR have been narrowed to achieve a preliminary technical design ready for a Critical Decision 2 review. Many aspects of NOvA described this TDR are complete to a level far beyond a preliminary design. In particular, the access road to the NOvA Far Detector site in Minnesota has an advanced technical design at a level appropriate for a Critical Decision 3a review. Several components of the accelerator upgrade and new neutrino detectors also have advanced technical designs appropriate for a Critical Decision 3a review. Chapter 1 is an Executive Summary with a short description of the NOvA project. Chapter 2 describes how the Fermilab NuMI beam will provide a narrow band beam of neutrinos for NOvA. Chapter 3 gives an updated overview of the scientific basis for the NOvA experiment, focusing on the primary goal to extend the search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations and measure the sin{sup 2}(2{theta}{sub 13}) parameter. This parameter has not been measured in any previous experiment and NOvA would extend the search by about an order of magnitude beyond the current limit. A secondary goal is to measure the dominant mode oscillation parameters, sin{sup 2}(2{theta}{sub 23}) and {Delta}m{sub 32}{sup 2} to a more precise level than previous experiments. Additional physics goals for NOvA are also discussed. Chapter 4 describes the Scientific Design Criteria which the Fermilab accelerator complex, NOvA detectors and NOvA detector sites must satisfy to meet the physics goals discussed in Chapter 3. Chapter 5 is an overview of the NOvA project. The changes in the design relative to the NOvA CDR are discussed. Chapter 6 summarizes the NOvA

Nova laser assurance-management system

International Nuclear Information System (INIS)

Levy, A.J.

1983-01-01

In a well managed project, Quality Assurance is an integral part of the management activities performed on a daily basis. Management assures successful performance within budget and on schedule by using all the good business, scientific, engineering, quality assurance, and safety practices available. Quality assurance and safety practices employed on Nova are put in perspective by integrating them into the overall function of good project management. The Nova assurance management system was developed using the quality assurance (QA) approach first implemented at LLNL in early 1978. The LLNL QA program is described as an introduction to the Nova assurance management system. The Nova system is described pictorially through the Nova configuration, subsystems and major components, interjecting the QA techniques which are being pragmatically used to assure the successful completion of the project

School Psychology in Nova Scotia

Science.gov (United States)

King, Sara; McGonnell, Melissa; Noyes, Amira

2016-01-01

Registration as a psychologist in Nova Scotia can be at the master's or doctoral level; however, the Nova Scotia Board of Examiners in Psychology has announced a move to the doctoral degree as the entry-level to practice. Many school psychologists in Nova Scotia practice at the master's level; therefore, this change could affect school psychology…

Explosive hydrogen burning in novae

International Nuclear Information System (INIS)

Wiescher, M.; Goerres, J.; Thielemann, F.K.; Ritter, H.

1986-01-01

Recent observations (nova CrA 81 and Aql 82) reported large enhancements of element abundances beyond CNO nuclei in nova ejecta, which still wait for a clear theoretical explanation. Attempts to interprete these findings include scenarios like nova events on a O-Ne-Mg white dwarf or nuclear processing which enables the transfer of CNO material to heavier nuclei. In the present study we included all available nuclear information on proton-rich unstable nuclei, to update thermo-nuclear reaction rates in explosive hydrogen burning. They are applied in a systematic analysis of explosive hydrogen burning for a variety of temperature conditions, appropriate to nova explosions. We find that (a) for temperatures T>2 10 8 K, pre-existing material in Ne, Al, or Mg can be transferred to heavier nuclei following the flow pattern of a r(apid) p(roton-capture) process (b) for T> or approx.3.5 10 8 K CNO matter can be processed to heavier nuclei (in accordance with previous findings). On the basis of these results it seems unlikely that nova Aql 82 (which shows strong carbon and oxygen enrichment together with heavier elements) can be explained by a nova event on a bare O-Ne-Mg white dwarf but is rather a result of burning with T> or approx.3.5 10 8 K. An application to existing nova models shows a reduced 26 Al production, when compared to earlier predictions. Both conclusions, however, have to be verified by complete nova calculations which include the improved nuclear physics input, presented here. (orig.)

Searching for nova shells around cataclysmic variables

Science.gov (United States)

Sahman, D. I.; Dhillon, V. S.; Knigge, C.; Marsh, T. R.

2015-08-01

We present the results of a search for nova shells around 101 cataclysmic variables (CVs), using H α images taken with the 4.2-m William Herschel Telescope (WHT) and the 2.5-m Isaac Newton Telescope Photometric H α Survey of the Northern Galactic Plane (IPHAS). Both telescopes are located on La Palma. We concentrated our WHT search on nova-like variables, whilst our IPHAS search covered all CVs in the IPHAS footprint. We found one shell out of the 24 nova-like variables we examined. The newly discovered shell is around V1315 Aql and has a radius of ˜2.5 arcmin, indicative of a nova eruption approximately 120 yr ago. This result is consistent with the idea that the high mass-transfer rate exhibited by nova-like variables is due to enhanced irradiation of the secondary by the hot white dwarf following a recent nova eruption. The implications of our observations for the lifetime of the nova-like variable phase are discussed. We also examined four asynchronous polars, but found no new shells around any of them, so we are unable to confirm that a recent nova eruption is the cause of the asynchronicity in the white dwarf spin. We find tentative evidence of a faint shell around the dwarf nova V1363 Cyg. In addition, we find evidence for a light echo around the nova V2275 Cyg, which erupted in 2001, indicative of an earlier nova eruption ˜300 yr ago, making V2275 Cyg a possible recurrent nova.

Relationship of classical novae to other eruptive variables

International Nuclear Information System (INIS)

Vogt, N.

1989-01-01

Classical novae are characterized by their well known large-amplitude outbursts, accompanied by the ejection of a shell. The same stars, however, apparently pass through much longer quiescent phases whose duration exceeds that of the outburst phase by a factor ∼ 10 5 and that of historical nova records by a factor 10 2 -10 3 . Therefore a large number of variable stars should exist which actually are classical nova systems but whose last outbursts occurred in prehistoric times. We assume that some of these stars are hidden among the so-called 'nova-lies' in the literature. However some eruptive variables and symbiotic stars, i.e. stars which certainly are not nova remnants, are mentioned. Variables related to classical novae can be divided into three main classes: (i) Potential novae which are possibly classical novae in their quiescent state. Potential novae must share the basic configuration and parameters (orbital period, masses) with classical novae; they must be semi-detached cataclysmic binaries with a white dwarf as primary and a Roche-lobe-filling red dwarf on, or near, the mainsequence as secondary. (ii) Stars which share some outburst characteristics with classical novae without having the same binary configuration. For example recurrent novae with giant secondaries, very slow novae (and symbiotic binary stars). (iii) Stars which are evolutionarily related to classical novae, i.e. which possibly are progenitors or successors of novae in their secular evolution, such as binary nuclei of planetary nebulae and close, but detached, white dwarf-red dwarf pairs (e.g. V 471 Tau), both resulting from common-envelope evolution. These three main groups of nova-related stars are discussed. (author)

Observations of classical novae in outburst

Science.gov (United States)

Starrfield, S.; Stryker, L. L.; Sonneborn, G.; Sparks, Warren M.; Ferland, Gary; Wagner, R. M.; Williams, R. E.; Gehrz, Robert D.; Ney, Edward P.; Kenyon, Scott

1988-01-01

The IUE obtained ultraviolet data on novae in outburst. The characteristics of every one of the outbursts are different. Optical and infrared data on many of the same novae were also obtained. Three members of the carbon-oxygen class of novae are presented.

INCIDENCIA DE LAS POLÍTICAS DE APOYO EDUCATIVO EN LAS ESTRUCTURAS ORGANIZATIVAS DE LOS CENTROS DESDE LA PERSPECTIVA DEL PROFESORADO: UN ESTUDIO EN LA PROVINCIA DE JAÉN

Directory of Open Access Journals (Sweden)

José Antonio Torres González

2016-01-01

Full Text Available Las políticas educativas contemporáneas, conforme a los nuevos ejes que las determinan (calidad-equidad-educación, han dirigido sus principales líneas de acción a combatir la exclusión o las desigualdades sociales mediante políticas compensatorias de discriminación positiva sobre los sectores más vulnerables de la población escolar. El problema de investigación que induce este trabajo, se centra en conocer la evolución del proceso de inclusión en los centros de Educación Primaria, como consecuencia de la sucesiva implantación de políticas educativas tendentes a conseguir la igualdad de oportunidades en educación. Nuestro propósito es indagar en las concepciones y percepciones que tienen los profesores sobre el funcionamiento de las estructuras de apoyo educativo en los centros y sus necesidades de formación en relación a esos procesos. El modelo adoptado en nuestra investigación es de naturaleza comprensiva, exploratoria, descriptiva y confirmatoria, empleando el cuestionario como instrumento de obtención de información al servicio de los objetivos de investigación. Las conclusiones ponen de manifiesto que el funcionamiento de las estructuras de apoyo tiene multitud de implicaciones para los profesionales y para los propios centros, enfatizando que las políticas de apoyo y refuerzo educativo tienen escasa incidencia en las estructuras organizativas de los centros.

IGUALDAD DE OPORTUNIDAD Y MOVILIDAD SOCIAL DEL ESTUDIANTE DE LA FESC

Directory of Open Access Journals (Sweden)

Pedro Rafael Sayago Rojas

2016-02-01

Full Text Available RESUMEN El enfoque principal de esta investigación consiste en aplicar la metodología conocida para establecer resultados de oportunidad y movilidad social del estudiante de Fundación de Estudios Superiores de Comfanorte FESC, mediante datos fiables de la relación padre – hijo, comparando las relaciones que implican nivel de educación, ingresos, y posesión de activos determinantes, el bienestar económico y social, así como el nivel de vida entre una generación y otra generación. Dada la característica de la región de ser frontera y la crisis actual, la oportunidad y movilidad social se verá afectada, pues mientras que una de las variables analizadas como es el coeficiente Gini, es mejor para la ciudad de Cúcuta frente al coeficiente departamental y nacional, a futuro y por la falta de creación de empresas para la generación de empleo, afectará la otra variable clave de resultado como es el ingreso, restando al estudiante FESC oportunidad y movilidad social.

Posibilidades de crecimiento del Islam en América Latina: oportunidades y dificultades

OpenAIRE

Gabriel Ernesto Andrade

2001-01-01

Este trabajo elabora un diagnóstico de las posibilidades de crecimiento del Islam en América Latina, considerando las oportunidades y dificultades para su expansión y crecimiento. En este sentido, se analiza como oportunidades de crecimiento la búsqueda de nuevas identidades, las difíciles condiciones sociales latinoamericanas, el paralelismo entre el Islam y elmarxismo y el apoyo financiero proveniente de naciones islámicas. Como dificultades se analiza la rigidez cultural ...

Retos y oportunidades de la investigación en marketing interno

Directory of Open Access Journals (Sweden)

Jessica Mendoza Moheno

2011-01-01

Full Text Available El objetivo de este ensayo es realizar un análisis de la conceptualización del marketing interno y las principales investigaciones aplicadas, con el fin de resaltar las oportunidades y retos que enfrenta, para lo cual, se hace una revisión de la literatura del tema en relación a su conceptualización, se analiza la orientación al cliente interno como elemento central del marketing interno, diferenciándola con la orientación al mercado. Así mismo, se destacan los principales hallazgos sobre las investigaciones aplicadas. Finalmente, se describen retos y oportunidades del marketing interno.

Novas tecnologias aplicadas às embalagens de alimentos

Directory of Open Access Journals (Sweden)

Flávia De Floriani Pozza Rebello

2009-12-01

Full Text Available Com o desenvolvimento da indústria de alimentos, as embalagens têm se aperfeiçoado, indo além de sua função básica de proteger o alimento contra danos mecânicos e contaminações químicas e microbiológicas. Elas têm cada vez mais desempenhando papel de destaque, contribuindo ativamente para a venda de um produto. Assim, as indústrias de embalagens têm procurado atender aos consumidores mais exigentes e juntamente aos centros de pesquisa e universidades, têm investido mais em estudos de novas tecnologias, a fim de prolongar as características de qualidade do alimento, conferir melhor aparência, maior proteção mecânica no embarque, transporte, desembarque e nos supermercados, oferecer embalagens mais compactas, que ocupem menos espaço na geladeira, com abertura e fechamento mais fáceis, e que utilizem materiais de fácil reciclagem ou decomposição no ambiente. Com o objetivo de atender às novas expectativas das indústrias de alimentos e dos consumidores, surgem as embalagens ativas e as embalagens inteligentes. As embalagens ativas são aquelas que interagem de alguma forma com o alimento, seja liberando substâncias conservantes ao longo da vida de prateleira do produto, ou “corrigindo” alguns problemas naturais do alimento, como sabor amargo por exemplo, em que algumas enzimas podem ser adicionadas ao material de embalagem, minimizando este problema e tornando o produto mais saboroso. Já as embalagens inteligentes indicam as modificações químicas às quais os alimentos estão passando, como mudanças de pH, por exemplo, indicando alterações na qualidade do produto.

RECURRENT NOVAE IN M31

Energy Technology Data Exchange (ETDEWEB)

Shafter, A. W. [Department of Astronomy, San Diego State University, San Diego, CA 92182 (United States); Henze, M. [European Space Astronomy Centre, P.O. Box 78, E-28692 Villanueva de la Cañada, Madrid (Spain); Rector, T. A. [Department of Physics and Astronomy, University of Alaska Anchorage, 3211 Providence Dr., Anchorage, AK 99508 (United States); Schweizer, F. [Carnegie Observatories, 813 Santa Barbara St., Pasadena, CA 91101 (United States); Hornoch, K. [Astronomical Institute, Academy of Sciences, CZ-251 65 Ondřejov (Czech Republic); Orio, M. [Astronomical Observatory of Padova (INAF), I-35122 Padova (Italy); Pietsch, W. [Max Planck Institute for Extraterrestrial Physics, P.O. Box 1312, Giessenbachstr., D-85741, Garching (Germany); Darnley, M. J.; Williams, S. C.; Bode, M. F. [Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 5RF (United Kingdom); Bryan, J., E-mail: aws@nova.sdsu.edu [McDonald Observatory, Austin, TX 78712 (United States)

2015-02-01

The reported positions of 964 suspected nova eruptions in M31 recorded through the end of calendar year 2013 have been compared in order to identify recurrent nova (RN) candidates. To pass the initial screen and qualify as a RN candidate, two or more eruptions were required to be coincident within 0.′1, although this criterion was relaxed to 0.′15 for novae discovered on early photographic patrols. A total of 118 eruptions from 51 potential RN systems satisfied the screening criterion. To determine what fraction of these novae are indeed recurrent, the original plates and published images of the relevant eruptions have been carefully compared. This procedure has resulted in the elimination of 27 of the 51 progenitor candidates (61 eruptions) from further consideration as RNe, with another 8 systems (17 eruptions) deemed unlikely to be recurrent. Of the remaining 16 systems, 12 candidates (32 eruptions) were judged to be RNe, with an additional 4 systems (8 eruptions) being possibly recurrent. It is estimated that ∼4% of the nova eruptions seen in M31 over the past century are associated with RNe. A Monte Carlo analysis shows that the discovery efficiency for RNe may be as low as 10% that for novae in general, suggesting that as many as one in three nova eruptions observed in M31 arise from progenitor systems having recurrence times ≲100 yr. For plausible system parameters, it appears unlikely that RNe can provide a significant channel for the production of Type Ia supernovae.

Nova-driven winds in globular clusters

International Nuclear Information System (INIS)

Scott, E.H.; Durisen, R.H.

1978-01-01

Recent sensitive searches for Hα emission from ionized intracluster gas in globular clusters have set upper limits that conflict with theoretical predictions. We suggest that nova outbursts heat the gas, producing winds that resolve this discrepancy. The incidence of novae in globular clusters, the conversion of kinetic energy of the nova shell to thermal energy of the intracluster gas, and the characteristics of the resultant winds are discussed. Calculated emission from the nova-driven models does not conflict with any observations to date. Some suggestions are made concerning the most promising approaches for future detection of intracluster gas on the basis of these models. The possible relationship of nova-driven winds of globular cluster X-ray sources is also considered

El Desarrollo de Viviendas de Interés Social y la Recuperación de Plusvalías en el Centro de Guayaquil: ¿Restricción u Oportunidad?

Directory of Open Access Journals (Sweden)

Alina Delgado Bohorquez

2016-12-01

Full Text Available La recuperación de los centros urbanos es una tarea a la que se han abocado los gobiernos de países de América Latina desde hace algunos años y que sigue a la tendencia implantada desde Europa y Estados Unidos. Los mayores costos del desarrollo periurbano y el elevado deterioro de los sectores centrales de las ciudades con la consecuente subutilización de recursos de infraestructura ha despertado un renovado interés por potencializar el desarrollo de estas áreas. En el corazón urbano de la ciudad de Guayaquil se encuentran importantes ejes viales como las calles Quito y Machala. Existen, sin embargo, a lo largo de estas vías solares vacíos, edificaciones obsoletas o en desuso, destinos comerciales no compatibles con la dinámica urbana, ausencia de áreas verdes e inseguridad. El objetivo del presente artículo fue analizar estrategias e instrumentos de gestión territorial que pudieran ser aplicables para la recuperación de plusvalías y el financiamiento de proyectos de vivienda social en el centro de Guayaquil. Se planteó la hipótesis de que a través de la utilización de estos instrumentos se podrían atraer inversiones al centro, y al mismo tiempo asegurar la inclusión de vivienda social, mejorar la calidad de los espacios públicos y contribuir a recuperar la memoria histórica del centro. La metodología utilizada surge de conceptualizaciones, estudio de casos y análisis de aplicabilidad de instrumentos de gestión para la renovación urbana del centro. Se concluye con una reflexión acerca de cómo las visiones diversas de la ciudad (la de las elites y de los grupos de menores ingresos pueden y deben ser integradas, por medio de la aplicación de instrumentos de recuperación de plusvalías enmarcados dentro de la discusión del derecho a la vivienda, la ciudad y a la función social de la propiedad.

Centros y espacios públicos como oportunidades

Directory of Open Access Journals (Sweden)

Jordi Borja

2001-12-01

Full Text Available Urban centers are polysemic places in the city, except when they get homogeneous and specialized. The urban challenge consists in building the city on the city: regenerating,rehabilitating, finishing, developing new metropolitan centers, guaranteeing their mobility, access and variety. In the city of cities mobility and visibility are civil rights.The answer to urban challenges is to provide urban projects based on different aims. Civic participation is a political and cultural discussion, guided by explicit politicalobjectives and by the upcoming of implicit cultural values and social interests. Public space is a political, urban and cultural challenge.

Synoptic GNIRS XD Spectra ToO Novae

Science.gov (United States)

Woodward, Chick; Helton, Andrew; Spitzer/Chandra Team

2007-02-01

Novae are important contributors to galactic chemical enrichment on local scales. NIR spectroscopy of novae provides information about the elemental abundances of the gas and dust in the ejecta dispersing into the ISM as well as kinematic information related to the outburst. We propose to obtain synoptic GNIRS spectra of select Target of Opportunity (ToO) novae in the Magellanic Clouds (MC) and the galaxy to study the dynamics of the ejecta, to determine the temporal evolution of coronal lines and recombination lines (measuring their strength and velocity profiles), and to determine abundances. Being all equidistant, MC nova permit a more robust analysis of distant-dependent physical parameters of outburst than is generally possible for Galactic novae. The GNIRS data will provide critical spectral coverage and synoptic data to complement extant Spitzer and Chandra nova programs. Triggering of the GNIRS program will occur when a nova becomes brighter than V=12 mag, (assuming that adequate PWFS guide stars exist) as reported in the IAUC or CBET.

La escuela inclusiva: una oportunidad para humanizarnos

Directory of Open Access Journals (Sweden)

Miguel López Melero

2012-01-01

Full Text Available En este artículo mis reflexiones las centro en el amor y la educación como fundamentos de la escuela inclusiva. Un amor sin adjetivos, basado en el respeto al otro como legítimo otro en la convivencia. Es un modo de vida que se inicia en la confianza desde la edad más temprana. Más aun, el amor es un acto de confianza. La confianza es el fundamento de nuestra convivencia. Los seres humanos nos enfermamos en un ambiente de desconfianza, manipulación e instrumentalización de las relaciones. La ausencia de amor nos deshumaniza. Vivimos en un mundo en el que se habla mucho del amor pero lo negamos, continuamente, en nuestros comportamientos y acciones. Vivimos inmersos en la cultura patriarcal. El amor, en dicha cultura, es considerado como un bien inalcanzable o, acaso, una ilusión o una esperanza. Sin embargo, debemos recuperar la vida matrística de la infancia, viviendo en el amor, amando. Es decir, respetando a las personas como legítimas personas en su diferencia, independientemente del hándicap, del género, de la etnia, religión o procedencia, en la convivencia. Sólo en el respeto y en el reconocimiento de las personas como personas radica el sentido de lo humano. Lo que constituye al ser humano como tal es la dimensión social y no lo genético. La genética es la condición inicial, es un punto de partida, no de llegada. Somos lo que somos gracias a las oportunidades que hemos tenido y no a los genes. Ahora bien, lo más humano del ser humano es desvivirse por otro ser humano y en este desvivir surge el valor ético de la educación. Por tanto, hablar de inclusión es hablar de justicia y, parece lógico, que para construir una sociedad justa sea necesario desarrollar modelos educativos equitativos que afronten con justicia los desequilibrios existentes en la misma. Para ello es imprescindible que los responsables de las políticas educativas, el profesorado y los investigadores contraigamos el compromiso moral de orientar el

El daño y el nexo causal en la perdida de oportunidad

OpenAIRE

Herrera Montañez, Diego Alejandro

2016-01-01

El presente escrito se ocupa de estudiar el nexo de causalidad como elemento estructural de la responsabilidad cuando éste es difuso. Para ello, se pretende abordar la pérdida de la oportunidad como una teoría especial de causalidad que tiene lugar cuando el nexo causal no resulta claro, lo cual contradice la tesis preponderante de la doctrina y la jurisprudencia tradicional según la cual, la pérdida de la oportunidad es un criterio autónomo del daño. En su contenido se realiza una explic...

Discovery of a New Classical Nova Shell Around a Nova-like Cataclysmic Variable

Science.gov (United States)

Guerrero, Martín A.; Sabin, Laurence; Tovmassian, Gagik; Santamaría, Edgar; Michel, Raul; Ramos-Larios, Gerardo; Alarie, Alexandre; Morisset, Christophe; Bermúdez Bustamante, Luis C.; González, Chantal P.; Wright, Nick J.

2018-04-01

The morphology and optical spectrum of IPHASX J210204.7+471015, a nebula classified as a possible planetary nebula are, however, strikingly similar to those of AT Cnc, a classical nova shell around a dwarf nova. To investigate its true nature, we have obtained high-resolution narrowband [O III] and [N II] images and deep optical spectra. The nebula shows an arc of [N II]-bright knots notably enriched in nitrogen, while an [O III]-bright bow shock is progressing throughout the ISM. Diagnostic line ratios indicate that shocks are associated with the arc and bow shock. The central star of this nebula has been identified by its photometric variability. Time-resolved photometric and spectroscopic data of this source reveal a period of 4.26 hr, which is attributed to a binary system. The optical spectrum is notably similar to that of RW Sex, a cataclysmic variable star (CV) of the UX UMa nova-like (NL) type. Based on these results, we propose that IPHASX J210204.7 + 471015 is a classical nova shell observed around a CV-NL system in quiescence.

NOVA.

Science.gov (United States)

WGBH-TV, Boston, MA.

News clippings, reviews, and feature articles about the Public Broadcasting System science-adventure series "Nova" are collected here. Included are comments from the New York Times, Washington Post, Christian Science Monitor, and TV Guide. Commentaries are primarily favorable and include synopses of various episodes. (DGC)

Recurrent Novae — A Review

Directory of Open Access Journals (Sweden)

K. Mukai

2015-02-01

Full Text Available In recent years, recurrent nova eruptions are often observed very intensely in wide range of wavelengths from radio to optical to X-rays. Here I present selected highlights from recent multi-wavelength observations. The enigma of T Pyx is at the heart of this paper. While our current understanding of CV and symbiotic star evolution can explain why certain subset of recurrent novae have high accretion rate, that of T Pyx must be greatly elevated compared to the evolutionary mean. At the same time, we have extensive data to be able to estimate how the nova envelope was ejected in T Pyx, and it turns to be a rather complex tale. One suspects that envelope ejection in recurrent and classical novae in general is more complicated than the textbook descriptions. At the end of the review, I will speculate that these two may be connected.

Identifying and quantifying recurrent novae masquerading as classical novae

International Nuclear Information System (INIS)

Pagnotta, Ashley; Schaefer, Bradley E.

2014-01-01

Recurrent novae (RNe) are cataclysmic variables with two or more nova eruptions within a century. Classical novae (CNe) are similar systems with only one such eruption. Many of the so-called CNe are actually RNe for which only one eruption has been discovered. Since RNe are candidate Type Ia supernova progenitors, it is important to know whether there are enough in our Galaxy to provide the supernova rate, and therefore to know how many RNe are masquerading as CNe. To quantify this, we collected all available information on the light curves and spectra of a Galactic, time-limited sample of 237 CNe and the 10 known RNe, as well as exhaustive discovery efficiency records. We recognize RNe as having (1) outburst amplitude smaller than 14.5 – 4.5 × log (t 3 ), (2) orbital period >0.6 days, (3) infrared colors of J – H > 0.7 mag and H – K > 0.1 mag, (4) FWHM of Hα > 2000 km s –1 , (5) high excitation lines, such as Fe X or He II near peak, (6) eruption light curves with a plateau, and (7) white dwarf mass greater than 1.2 M ☉ . Using these criteria, we identify V1721 Aql, DE Cir, CP Cru, KT Eri, V838 Her, V2672 Oph, V4160 Sgr, V4643 Sgr, V4739 Sgr, and V477 Sct as strong RN candidates. We evaluate the RN fraction among the known CNe using three methods to get 24% ± 4%, 12% ± 3%, and 35% ± 3%. With roughly a quarter of the 394 known Galactic novae actually being RNe, there should be approximately a hundred such systems masquerading as CNe.

Theory of Nova Outbursts and Type Ia Supernovae

Directory of Open Access Journals (Sweden)

M. Kato

2015-02-01

Full Text Available We briefly review the current theoretical understanding of the light curves of novae. These curves exhibit a homologous nature, dubbed the universal decline law, and when time-normalized, they almost follow a single curve independently of the white dwarf (WD mass or chemical composition of the envelope. The optical and near-infrared light curves of novae are reproduced mainly by free-free emission from their optically thick winds. We can estimate the WD mass from multiwavelength observations because the optical, UV, and soft X-ray light curves evolve differently and we can easily resolve the degeneracy of the optical light curves. Recurrent novae and classical novae are a testbed of type Ia supernova scenarios. In the orbital period versus secondary mass diagram, recurrent novae are located in different regions from classical novae and the positions of recurrent novae are consistent with the single degenerate scenario.

Pulsed power supply for Nova Upgrade

International Nuclear Information System (INIS)

Bacon, J.L.; Kajs, J.P.; Walls, A.; Weldon, W.F.; Zowarka, R.C.

1992-01-01

This report describes work carried out at the Center for Electromechanics at The University of Texas at Austin (CEM-UT). A baseline design of the Nova Upgrade has been completed by Lawrence Livermore National Laboratory. The Nova Upgrade is an 18 beamline Nd: glass laser design utilizing fully relayed 4x4 30 cm aperture segmented optical components. The laser thus consists of 288 independent beamlets nominally producing 1.5 to 2.0 MJ of 0.35 μm light in a 3 to 5 ns pulse. The laser design is extremely flexible and will allow a wide range of pulses to irradiate ICF targets. This facility will demonstrate ignition/gain and the scientific feasibility of ICF for energy and defense applications. The pulsed power requirements for the Nova Upgrade are given. CEM-UT was contracted to study and develop a design for a homopolar generator/inductor (HPG/inductor) opening switch system which would satisfy the pulsed power supply requirements of the Nova Upgrade. The Nd:glass laser amplifiers used in the Nova Upgrade will be powered by light from xenon flashlamps. The pulsed power supply for the Nova Upgrade powers the xenon flashlamps. This design and study was for a power supply to drive flashlamps

SOFTWARE LIBRE: OPORTUNIDADES Y RETOS CON ESPECIAL REFERENCIA A VENEZUELA

Directory of Open Access Journals (Sweden)

Gladys Rodríguez

2008-11-01

Full Text Available En este trabajo se abordan algunas consideraciones en torno al software libre, sus oportunidades pero también sus desafíos, a la vez que se expone el marco legal de esta figura a partir de su implementación en Venezuela. Se ha empleado una metodología descriptivo-explicativa, partiendo de la revisión bibliográfica conjuntamente con la legislación nacional sobre el tema. Asimismo, se consultó a FUNDACITE ZULIA, a través de la Misión Ciencia, y se concluye que el software libre es una oportunidad para desarrollar programas que atiendan necesidades particulares, y hay quienes consideran que resulta una herramienta especialmente útil para democratizar el acceso a la información en países en desarrollo; sin embargo, planteamos la realidad de una brecha digital entre países en desarrollo y desarrollados

Manifesto de ciência social computacional

NARCIS (Netherlands)

Conte, R.; Gilbert, N.; Bonelli, G.; Cioffi-Revilla, C.; Deffuant, G.; Kertesz, J.; Loreto, V.; Moat, S.; Nadal, J. -P.; Sanchez, A.; Nowak, A; Flache, Andreas; San Miguel, M.; Helbing, D.

2013-01-01

A crescente integração da tecnologia em nossas vidas criou volumes sem precedentes de dados sobre o comportamento cotidiano da sociedade. Esses dados abrem novas oportunidades para se trabalhar em direção a um entendimento quantitativo dos sistemas sociais complexos, no âmbito de uma nova disciplina

Bossa Nova

DEFF Research Database (Denmark)

Petersen, Nicoline Jacoby; Bræstrup, Lise

"Bossa Nova" giver dig de bedste bud på, hvordan du takler den menneskelige dimension i ledelse. Når du bevæger dig ud på gulvet, opstår der konflikter, kærlighed, jalousi og vrede. Pludselig opdager du, at medarbejdere tænker meget anderledes end dig selv, har forskellige behov og af og til......, kriser og meget andet. Her er værdifulde iagttagelser og tips, som enhver leder ? uanset branche ? kan bruge i sin dagligdag. "Bossa Nova" er uundværlig for den, der vil lære mere om, hvordan man får mennesker til at præstere det sublime, så ledelse bliver en dans, hvor alle kan følge takten....

Absolute spectrophotometry of Nova Cygni 1975

International Nuclear Information System (INIS)

Kontizas, E.; Kontizas, M.; Smyth, M.J.

1976-01-01

Radiometric photoelectric spectrophotometry of Nova Cygni 1975 was carried out on 1975 August 31, September 2, 3. α Lyr was used as reference star and its absolute spectral energy distribution was used to reduce the spectrophotometry of the nova to absolute units. Emission strengths of Hα, Hβ, Hγ (in W cm -2 ) were derived. The Balmer decrement Hα:Hβ:Hγ was compared with theory, and found to deviate less than had been reported for an earlier nova. (author)

Situación de salud de reclusos de un centro de cumplimiento penitenciario, Chile

Directory of Open Access Journals (Sweden)

C. Osses-Paredes

2013-02-01

Full Text Available Introducción: La población penitenciaria ha ido en aumento, y con ello las necesidades en salud, siendo catalogada como una población vulnerable. Por otro lado, las personas privadas de libertad mantienen los derechos inherentes al ser humano, entre ellos el derecho a la salud, el cual en algunas oportunidades se encuentra relegado. Objetivo: Caracterizar la situación de salud de reclusos de un centro de cumplimiento penitenciario, y su grado de satisfacción con la atención en salud brindada. Material y métodos: Estudio descriptivo de corte transversal, llevado a cabo en el centro de cumplimiento penitenciario El Manzano, Concepción, durante octubre 2011-febrero 2012 mediante la aplicación del Examen de medicina preventiva y un cuestionario de antecedentes sociodemográficos y de salud, incluyendo reclusos de sexo masculino y femenino mayores de 18 años en régimen cerrado. Resultados: Un 85% de la población estudiada eran hombres, la edad promedio fue 34 años, el 91,2% recibe visitas, el promedio de reclusión fue 38 meses. El 45% posee al menos una enfermedad diagnosticada, primando los desórdenes mentales, patologías del sistema respiratorio y circulatorio. Un 56% de los reclusos ha solicitado atención en salud con poca frecuencia, encontrándose 33% muy satisfecho y 32% satisfecho en lo relativo a los servicios sanitarios del penal. Discusión: El estado de salud de la población penal se encuentra más deteriorado que el de la población general, con necesidades mayores y distintas, sin embargo existe una percepción de un buen estado de salud y una tendencia al alto grado de satisfacción de los servicios sanitarios.

NOVA Corporation of Alberta annual report, 1992

International Nuclear Information System (INIS)

1993-01-01

Nova Corporation and its related businesses are involved in natural gas production, gas pipelines, consulting services, and upgrading of natural gas into chemicals and plastics. Nova owns Alberta Gas Transmission Division, the primary gas transportation system in Alberta, with 11,400 miles of pipeline and total deliveries in 1992 of 3.4 trillion ft 3 . Nova also owns 50% of Foothills Pipe Lines Ltd., one of Canada's largest carriers of exported gas, and 50% of TQM Pipeline Partnership, which transports natural gas in Quebec. Nova conducts its chemicals business through Novacor Chemicals Ltd., which has plants in Alberta, Ontario, Quebec, and the USA. Novacor's major petrochemicals are methanol, ethylene, propylene, and styrene and its major plastics are polystyrene, polypropylene, and polyethylene. Nova's gas-producing branch Novalta Resources produced 26 billion ft 3 of natural gas in 1992 and has proven reserves of 334 billion ft 3 . Nova's net income in 1992 was $164 million, compared to only $46 million in 1991. The company's operations, along with management discussion and analysis, are presented for 1992 and financial statements are included. 20 figs., 43 tabs

A Hubble Space Telescope survey for novae in M87 - III. Are novae good standard candles 15 d after maximum brightness?

Science.gov (United States)

Shara, Michael M.; Doyle, Trisha F.; Pagnotta, Ashley; Garland, James T.; Lauer, Tod R.; Zurek, David; Baltz, Edward A.; Goerl, Ariel; Kovetz, Attay; Machac, Tamara; Madrid, Juan P.; Mikołajewska, Joanna; Neill, J. D.; Prialnik, Dina; Welch, D. L.; Yaron, Ofer

2018-02-01

Ten weeks of daily imaging of the giant elliptical galaxy M87 with the Hubble Space Telescope (HST) has yielded 41 nova light curves of unprecedented quality for extragalactic cataclysmic variables. We have recently used these light curves to demonstrate that the observational scatter in the so-called maximum-magnitude rate of decline (MMRD) relation for classical novae is so large as to render the nova-MMRD useless as a standard candle. Here, we demonstrate that a modified Buscombe-de Vaucouleurs hypothesis, namely that novae with decline times t2 > 10 d converge to nearly the same absolute magnitude about two weeks after maximum light in a giant elliptical galaxy, is supported by our M87 nova data. For 13 novae with daily sampled light curves, well determined times of maximum light in both the F606W and F814W filters, and decline times t2 > 10 d we find that M87 novae display M606W,15 = -6.37 ± 0.46 and M814W,15 = -6.11 ± 0.43. If very fast novae with decline times t2 < 10 d are excluded, the distances to novae in elliptical galaxies with stellar binary populations similar to those of M87 should be determinable with 1σ accuracies of ± 20 per cent with the above calibrations.

Determinación de tendecias tecnológicas y oportunidades de negocio en el área de nanotecnología

Directory of Open Access Journals (Sweden)

Belkys Amador Cáceres

2005-09-01

Full Text Available Se determinaron las tendencias tecnológicas y oportunidades de negocio en el área de nanotecnología para la identificación de un portafolio de oportunidades. El método usado fue el documental-bibliométrico y su diseño no experimental-transeccional. La población muestral estuvo conformada por 20 trabajos patentados por la Oficina de Patentes y Marcas Registradas de EE.UU. en el área de nanotecnología, desde el año 1976 hasta el 2002. Del análisis se obtuvo que las oportunidades en esta área básicamente se orientan a los campos de electrónica/computación, materiales y medicina; en función de la evolución en los últimos años se proyecta un crecimiento vertiginoso de la nanotecnología. Se detectaron 21 nichos de oportunidades, a través de los cuales se visualizaron 32 oportunidades de negocio generales y 13 para la industria petrolera.

Photometry and polarimetry of Nova Andromedae 1986

Energy Technology Data Exchange (ETDEWEB)

Kikuchi, Sen; Mikami, Yoshitaka; Kondo, Masayuki

1988-01-01

We have carried out photometry of Nova Andromedae 1986 and find that it should be classified as a fast nova. We have also made polarimetry simultaneously at six wavelengths between 0.36-0.70 ..mu..m. The polarization increased between 2 and 22 days after the light maximum showing that dust formation was associated with the nova explosion.

OGLE ATLAS OF CLASSICAL NOVAE. II. MAGELLANIC CLOUDS

Energy Technology Data Exchange (ETDEWEB)

Mróz, P.; Udalski, A.; Poleski, R.; Soszyński, I.; Szymański, M. K.; Pietrzyński, G.; Wyrzykowski, Ł.; Ulaczyk, K.; Kozłowski, S.; Pietrukowicz, P.; Skowron, J., E-mail: pmroz@astrouw.edu.pl [Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa (Poland)

2016-01-15

The population of classical novae in the Magellanic Clouds was poorly known because of a lack of systematic studies. There were some suggestions that nova rates per unit mass in the Magellanic Clouds were higher than in any other galaxy. Here, we present an analysis of data collected over 16 years by the OGLE survey with the aim of characterizing the nova population in the Clouds. We found 20 eruptions of novae, half of which are new discoveries. We robustly measure nova rates of 2.4 ± 0.8 yr{sup −1} (LMC) and 0.9 ± 0.4 yr{sup −1} (SMC) and confirm that the K-band luminosity-specific nova rates in both Clouds are 2–3 times higher than in other galaxies. This can be explained by the star formation history in the Magellanic Clouds, specifically the re-ignition of the star formation rate a few Gyr ago. We also present the discovery of the intriguing system OGLE-MBR133.25.1160, which mimics recurrent nova eruptions.

Magnetic novae

Science.gov (United States)

Zemko, Polina; Orio, Marina

2016-07-01

We present the results of optical and X-ray observations of two quiescent novae, V2491 Cyg and V4743 Sgr. Our observations suggest the intriguing possibility of localization of hydrogen burning in magnetic novae, in which accretion is streamed to the polar caps. V2491 Cyg was observed with Suzaku more than 2 years after the outburst and V4743 Sgr was observed with XMM Newton 2 and 3.5 years after maximum. In the framework of a monitoring program of novae previously observed as super soft X-ray sources we also obtained optical spectra of V4743 Sgr with the SALT telescope 11.5 years after the eruption and of V2491 Cyg with the 6m Big Azimutal Telescope 4 and 7 years post-outburst. In order to confirm the possible white dwarf spin period of V2491 Cyg measured in the Suzaku observations we obtained photometric data using the 90cm WIYN telescope at Kitt Peak and the 1.2 m telescope in Crimea. We found that V4743 Sgr is an intermediate polar (IP) and V2491 Cyg is a strong IP candidate. Both novae show modulation of their X-ray light curves and have X-ray spectra typical of IPs. The Suzaku and XMM Newton exposures revealed that the spectra of both novae have a very soft blackbody-like component with a temperature close to that of the hydrogen burning white dwarfs in their SSS phases, but with flux by at least two orders of magnitude lower, implying a possible shrinking of emitting regions in the thin atmosphere that is heated by nuclear burning underneath it. In quiescent IPs, independently of the burning, an ultrasoft X-ray flux component originates at times in the polar regions irradiated by the accretion column, but the soft component of V4743 Sgr disappeared in 2006, indicating that the origin may be different from accretion. We suggest it may have been due to an atmospheric temperature gradient on the white dwarf surface, or to continuing localized thermonuclear burning at the bottom of the envelope, before complete turn-off. The optical spectra of V2491 Cyg and V

The UBV Color Evolution of Classical and Symbiotic Novae

Directory of Open Access Journals (Sweden)

I. Hachisu

2015-02-01

Full Text Available We identified a general course of classical nova outbursts in the B − V vs. U − B diagram. It has been reported that novae show spectra similar to A–F supergiants near optical light maximum. However, they do not follow the supergiant sequence in the color-color diagram, neither the blackbody nor the main-sequence sequence. Instead, we found that novae evolve along a new sequence in the pre-maximum and near-maximum phases, which we call the nova-giant sequence. This sequence is parallel to but Δ(U − B ≈ −0.2 mag bluer than the supergiant sequence. After optical maximum, its color quickly evolves back blueward along the same nova-giant sequence and reaches the point of free-free emission (B − V = −0.03, U − B = −0.97 and stays there for a while, which is coincident with the intersection of the blackbody sequence and the nova-giant sequence. Then the color evolves leftward (blueward in B − V but almost constant in U − B due mainly to development of strong emission lines. This is the general course of nova outbursts in the color-color diagram, which is deduced from eight well-observed novae including various speed classes. For a nova with unknown extinction, we can determine a reliable value of the color excess by matching the observed track of the target nova with this general course. This is a new and convenient method for obtaining color excesses of classical novae. Using this method, we redetermined the color excesses of nineteen well-observed novae.

A nova outburst powered by shocks

Science.gov (United States)

Li, Kwan-Lok; Metzger, Brian D.; Chomiuk, Laura; Vurm, Indrek; Strader, Jay; Finzell, Thomas; Beloborodov, Andrei M.; Nelson, Thomas; Shappee, Benjamin J.; Kochanek, Christopher S.; Prieto, José L.; Kafka, Stella; Holoien, Thomas W.-S.; Thompson, Todd A.; Luckas, Paul J.; Itoh, Hiroshi

2017-10-01

Classical novae are runaway thermonuclear burning events on the surfaces of accreting white dwarfs in close binary star systems, sometimes appearing as new naked-eye sources in the night sky1. The standard model of novae predicts that their optical luminosity derives from energy released near the hot white dwarf, which is reprocessed through the ejected material2-5. Recent studies using the Fermi Large Area Telescope have shown that many classical novae are accompanied by gigaelectronvolt γ-ray emission6,7. This emission likely originates from strong shocks, providing new insights into the properties of nova outflows and allowing them to be used as laboratories for the study of the unknown efficiency of particle acceleration in shocks. Here, we report γ-ray and optical observations of the Milky Way nova ASASSN-16ma, which is among the brightest novae ever detected in γ-rays. The γ-ray and optical light curves show a remarkable correlation, implying that the majority of the optical light comes from reprocessed emission from shocks rather than the white dwarf8. The ratio of γ-ray to optical flux in ASASSN-16ma directly constrains the acceleration efficiency of non-thermal particles to be around 0.005, favouring hadronic models for the γ-ray emission9. The need to accelerate particles up to energies exceeding 100 gigaelectronvolts provides compelling evidence for magnetic field amplification in the shocks.

X-ray Modeling of Classical Novae

Science.gov (United States)

Nemeth, Peter

2010-01-01

It has been observed and theoretically supported in the last decade that the peak of the spectral energy distribution of classical novae gradually shifts to higher energies at constant bolometric luminosity after a nova event. For this reason, comprehensive evolutionary studies require spectral analysis in multiple spectral bands. After a nova explosion, the white dwarf can maintain stable surface hydrogen burning, the duration of which strongly correlates with the white dwarf mass. During this stage the peak of the luminosity is in the soft X-ray band (15 - 60 Angstroms). By extending the modeling range of TLUSTY/SYNSPEC, I analyse the luminosity and abundance evolution of classical novae. Model atoms required for this work were built using atomic data from NIST/ASD and TOPBASE. The accurate but incomplete set of energy levels and radiative transitions in NIST were completed with calculated data from TOPBASE. Synthetic spectra were then compared to observed data to derive stellar parameters. I show the capabilities and validity of this project on the example of V4743 Sgr. This nova was observed with both Chandra and XMM-Newton observatories and has already been modeled by several scientific groups (PHOENIX, TMAP).

A Hubble Space Telescope Survey for Novae in M87. II. Snuffing out the Maximum Magnitude–Rate of Decline Relation for Novae as a Non-standard Candle, and a Prediction of the Existence of Ultrafast Novae

Energy Technology Data Exchange (ETDEWEB)

Shara, Michael M.; Doyle, Trisha; Zurek, David [Department of Astrophysics, American Museum of Natural History, Central Park West and 79th Street, New York, NY 10024-5192 (United States); Lauer, Tod R. [National Optical Astronomy Observatory, P.O. Box 26732, Tucson, AZ 85726 (United States); Baltz, Edward A. [KIPAC, SLAC, 2575 Sand Hill Road, M/S 29, Menlo Park, CA 94025 (United States); Kovetz, Attay [School of Physics and Astronomy, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv (Israel); Madrid, Juan P. [CSIRO, Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia); Mikołajewska, Joanna [N. Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, PL 00-716 Warsaw (Poland); Neill, J. D. [California Institute of Technology, 1200 East California Boulevard, MC 278-17, Pasadena CA 91125 (United States); Prialnik, Dina [Department of Geosciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978 (Israel); Welch, D. L. [Department of Physics and Astronomy, McMaster University, Hamilton, L8S 4M1, Ontario (Canada); Yaron, Ofer [Department of Particle Physics and Astrophysics, Weizmann Institute of Science, 76100 Rehovot (Israel)

2017-04-20

The extensive grid of numerical simulations of nova eruptions from the work of Yaron et al. first predicted that some classical novae might significantly deviate from the Maximum Magnitude–Rate of Decline (MMRD) relation, which purports to characterize novae as standard candles. Kasliwal et al. have announced the observational detection of a new class of faint, fast classical novae in the Andromeda galaxy. These objects deviate strongly from the MMRD relationship, as predicted by Yaron et al. Recently, Shara et al. reported the first detections of faint, fast novae in M87. These previously overlooked objects are as common in the giant elliptical galaxy M87 as they are in the giant spiral M31; they comprise about 40% of all classical nova eruptions and greatly increase the observational scatter in the MMRD relation. We use the extensive grid of the nova simulations of Yaron et al. to identify the underlying causes of the existence of faint, fast novae. These are systems that have accreted, and can thus eject, only very low-mass envelopes, of the order of 10{sup −7}–10{sup −8} M {sub ⊙}, on massive white dwarfs. Such binaries include, but are not limited to, the recurrent novae. These same models predict the existence of ultrafast novae that display decline times, t {sub 2,} to be as short as five hours. We outline a strategy for their future detection.

THE UNUSUALLY LUMINOUS EXTRAGALACTIC NOVA SN 2010U

International Nuclear Information System (INIS)

Czekala, Ian; Berger, E.; Chornock, R.; Marion, G. H.; Margutti, R.; Challis, P.; Pastorello, A.; Botticella, M. T.; Ergon, M.; Sollerman, J.; Smartt, S.; Vinkó, J.; Wheeler, J. C.

2013-01-01

We present observations of the unusual optical transient SN 2010U, including spectra taken 1.03 days to 15.3 days after maximum light that identify it as a fast and luminous Fe II type nova. Our multi-band light curve traces the fast decline (t 2 = 3.5 ± 0.3 days) from maximum light (M V = –10.2 ± 0.1 mag), placing SN 2010U in the top 0.5% of the most luminous novae ever observed. We find typical ejecta velocities of ≈1100 km s –1 and that SN 2010U shares many spectral and photometric characteristics with two other fast and luminous Fe II type novae, including Nova LMC 1991 and M31N-2007-11d. For the extreme luminosity of this nova, the maximum magnitude versus rate of decline relationship indicates a massive white dwarf (WD) progenitor with a low pre-outburst accretion rate. However, this prediction is in conflict with emerging theories of nova populations, which predict that luminous novae from massive WDs should preferentially exhibit an alternate spectral type (He/N) near maximum light.

Custo de oportunidade: oculto na contabilidade, nebuloso na mente dos contadores

Directory of Open Access Journals (Sweden)

André Moura Cintra Goulart

2002-12-01

Full Text Available Este trabalho tem como objetivo desenvolver uma reflexão sobre o custo de oportunidade, buscandose constituir uma base adequada para a identificação de possíveis deficiências de conhecimento do referido conceito por parte dos profissionais da área contábil. Considerando-se sua relevância e grande potencial de aplicação nas atividades empresariais, como na avaliação de resultados, entende-se como fundamental a existência de compreensão sobre o custo de oportunidade e suas aplicações. Pesquisa exploratória realizada indica a validade da hipótese estabelecida, de que os profissionais da área contábil detêm conhecimento insatisfatório sobre o conceito objeto deste estudo. Assim, evidencia-se a necessidade de que mais atenção seja dada ao custo de oportunidade no processo de formação dos profissionais da contabilidade. Espera-se que estes profissionais, com segurança conceitual, estejam em condições de colaborar ativamente com o aproveitamento do custo de oportunidade em suas diversas aplicações, seja na contabilidade societária ou na gerencial, com benefícios para os usuários das informações contábeis.The objective of this article is to develop a reflection about opportunity cost, seeking to establish an adequate basis for the identification of possible knowledge deficiencies in the accounting professionals. Considering its relevance and great potential for application in business activities, such as performance assessment, it is observed that understanding the opportunity cost concept and its applications is fundamental.The exploratory research realized indicates the validity of the hypothesis that guides the development of the work, namely, that the accounting professionals possess unsatisfactory knowledge about the concept that is the object of this study. Thus, the need is highlighted to give more attention to opportunity cost in the educational process of the professionals. It is expected that these

Copernicus observations of Nova Cygni 1975

Science.gov (United States)

Jenkins, E. B.; Snow, T. P.; Upson, W. L.; Anderson, R.; Starrfield, S. G.; Gallagher, J. S.; Friedjung, M.; Linsky, J. L.; Henry, R. C.; Moos, H. W.

1977-01-01

Near-ultraviolet radiation from Nova Cygni 1975 was detected by the Copernicus satellite on five occasions from 1975 September 1 to 1975 September 9. The nova was not seen in the UV after this date. The principal result was the observation of a broad emission feature from the Mg II doublet at 2800 A. The absence of strong UV radiation at shorter wavelengths suggests that these lines are produced by collisional excitation in the outer layers of an expanding shell with electron temperature of approximately 4000 K. The absence of observed emission lines from highly ionized species indicates that the amount of material with log T between 4.4 and 5.7 is less than 0.001 times that which produces the Mg II emission. The continuum flux in the near-UV decreased as the nova evolved, showing that the total luminosity decreased as the nova faded in the visible.

Avaliação dos instrumentos do projeto “nossas crianças: janelas de oportunidades”, segundo agentes comunitários de saúde

Directory of Open Access Journals (Sweden)

Juliana Martins

2008-01-01

Full Text Available La cartilla y el manual de apoyo "Toda hora es hora de cuidar" constituyen tecnologías del Proyecto "Nuestros niños: ventanas de oportunidades" para promover el desarrollo infantil. Esta investigación de carácter evaluativo, realizada en 2005/2006, con agentes comunitarios de salud, tuvo como objetivos: evaluar la aceptación y el uso de la cartilla y del manual de apoyo; identificar opiniones acerca de sus contenidos, formatos y redacción; identificar las dificultades y facilidades para su implantación. La recolección de los datos ocurrió en 17 centros de salud comunitaria en la ciudad de Sao Paulo; 29 agentes participaron de grupos focales y 125 respondieron cuestionarios estructurados. El análisis temático indica que los participantes consideran los instrumentos adecuados y de buena calidad, pero destacan como barreras a su utilización, dificultades propias de las familias y del proceso de trabajo. Ellos priorizan estrategias educativas tradicionales y los programas de formación influencian de manera positiva a esa evaluación

Imaging the Ejecta in Classical Novae

Science.gov (United States)

Linford, Justin

2016-10-01

A nova outburst results when sufficient mass accretes from a companion star onto the surface of a white dwarf, triggering a thermonuclear explosion. In classical novae the bulk of the emission comes from the warm, expanding ejecta. The prevailing theories assume that the explosion occurs as a single, spherically symmetric ejection event and predict a simple relationship between the white dwarf mass, the accretion rate, and the mass loss and energetics of the explosion. However, observations with modern instruments indicate that nova eruptions are far from simple. There is now evidence for multiple ejection events, common envelopes, non-spherical geometry, and even jet-like structures in the ejecta. Our ENova collaboration combines radio, mm, optical, and X-ray observations and detailed theoretical modelling to study the most common major explosions in the universe. Among our results so far are the direct demonstration of the importance of shocks in novae, including the detection of gamma-ray producing shocks in several sources, and the realization that multiple, long-lived outflows are much more common than previously assumed. Here we propose to continue these highly successful observations with coordinated detailed VLA radio interferometry and HST optical imaging and spectroscropy of several recent novae with substantial VLA monitoring already in progress.

ORIGINS OF ABSORPTION SYSTEMS OF CLASSICAL NOVA V2659 CYG (NOVA CYG 2014)

Energy Technology Data Exchange (ETDEWEB)

Arai, A.; Kawakita, H. [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555 (Japan); Shinnaka, Y. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Tajitsu, A., E-mail: arai6a@cc.kyoto-su.ac.jp [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, Hawaii 96720 (United States)

2016-10-10

We report on high-dispersion spectroscopy results of a classical nova V2659 Cyg (Nova Cyg 2014) that are taken 33.05 days after the V -band maximum. The spectrum shows two distinct blueshifted absorption systems originating from H i, Fe ii, Ca ii, etc. The radial velocities of the absorption systems are −620 km s{sup −1}, and −1100 to −1500 km s{sup −1}. The higher velocity component corresponds to the P-Cygni absorption features frequently observed in low-resolution spectra. Much larger numbers of absorption lines are identified at the lower velocity. These mainly originate from neutral or singly ionized Fe-peak elements (Fe i, Ti ii, Cr ii, etc.). Based on the results of our spectroscopic observations, we discuss the structure of the ejecta of V2659 Cyg. We conclude that the low- and high-velocity components are likely to be produced by the outflow wind and the ballistic nova ejecta, respectively.

Classical and Recurrent Novae as Quintessential Panchromatic Transients

Science.gov (United States)

Mukai, K.; Nelson, T.; Chomiuk, L.; Finzell, T.; Linford, J.; Mioduszewski, A.; Rupen, M.; Sokoloski, J.; Weston, J.

2014-07-01

In classical and recurrent novae, thermonuclear runaway (TNR) of accreted material on the white dwarf surface results in ejection of 10^{-6} to 10^{-4} solar masses at velocities of order 1000 km s^{-1}. They are routinely detected as transients from X-rays to radio, and 6 novae (so far) have also been detected in GeV gamma-rays with Fermi/LAT. It appears that all the nearby novae are detected with Fermi, suggesting gamma-ray emission to be a universal property of novae, while a few exceptional novae further away are also detected, indicating that the gamma-ray luminosity of novae varies from system to system. Here we present selected results from our multi-wavelength observations of recent classical and recurrent novae and discuss evidence for multiple, discrete mass ejection episodes driven by a single TNR. The collision among these shells create shocks that can be observed through synchrotron radio emission and optically thin, thermal, hard X-ray emission. We do not find obvious correlation between the X-ray flux and the GeV flux, even though the latter must also result from shocks. It is clear that shocks can either be efficient particle accelerator or efficient thermal X-ray emitter, but not necessarily both at the same time.

Nucleosynthesis in nova outbursts

International Nuclear Information System (INIS)

Iliadis, C.; Azuma, R.E.; Buchmann, L.

1994-02-01

Astronomical observations have shown that He, CNO material and/or heavy elements are considerably enriched in certain nova ejecta relative to solar matter. The heavy element enrichments can be explained by the dredge-up of matter from an underlying ONeMg white dwarf and subsequent redistribution of the material by the rp-process. The proton capture reactions on 32 S and 36 A r important for hydrogen burning during nova outbursts have been measured experimentally. The derived stellar reaction rates have been incorporated into large-scale network calculations and the astrophysical consequences are discussed. (author)

Time-Dependent Dust Formation in Novae

Directory of Open Access Journals (Sweden)

Kyung-Won Suh

1991-06-01

Full Text Available The dust formation processes in novae are investigated with close attention to recent infrared observations. Using mainly the classical nucleation theory, we have calculated the time scales of dust formation and growth in the environments of novae. Those time scales roughly resemble the typical observations. We have classified the dust-forming novae into three classes according to their explosion properties and the thermodynamic properties of dust grains. Oxygen grains from much later than carbon grains because of their thermodynamic properties. The effect of grain formation to the efficiency of stellar winds to drive the material outward is tested with newly obtained Planck mean values of dust grains.

ALERTA EMPRENDEDORA Y CONOCIMIENTO PREVIO PARA LA IDENTIFICACIÓN DE OPORTUNIDADES EMPRENDEDORAS: EL PAPEL MODERADOR DE LAS REDES SOCIALES

Directory of Open Access Journals (Sweden)

Ruiz-Arroyo, Matilde

2015-01-01

Full Text Available Este estudio contribuye a la investigación sobre la identificación de oportunidades emprendedoras, analizando el efecto moderador que el tama˜no y la fortaleza de la red de contactos del emprendedor ejercen en la relación de influencia del conocimiento previo y la alerta emprendedora sobre la identificación de oportunidades. Los resultados del análisis de regresión lineal sobre una muestra de 199 emprendedores de Andalucía muestran una influencia negativa del conocimiento previo sobre el número de oportunidades identificadas, así como un efecto moderador positivo de la fortaleza de la red en interacción con el nivel de alerta emprendedora. El presente trabajo contribuye a la literatura sobre emprendimiento proponiendo un modelo que estudia conjuntamente el papel del capital social, la alerta emprendedora y el conocimiento previo en la fase de identificación de oportunidades, y aplicando una perspectiva contingente basada en la integración del potencial papel moderador de ciertas características de las redes sociales del emprendedor.

Enquête de satisfaction Novae

CERN Multimedia

2014-01-01

Novae lance une enquête de satisfaction auprès de ses clients. Vous pouvez accéder au questionnaire au sujet des trois restaurants d’entreprise du CERN en utilisant le lien et les codes ci-dessous. Le délai de réponse est fixé au jeudi 29 mai.   https://survey.mis-trend.ch/NOVAE Voici les codes à introduire (en respectant la casse) pour entrer dans le questionnaire, selon le site : CERN Restaurant n°1 : CERN114 CERN Restaurant n°2 : CERN214 CERN Restaurant n°3 : CERN314   Nous attirons votre attention sur le fait que tout questionnaire rempli sera validé. Nous vous prions donc de ne pas utiliser ce lien pour tester le questionnaire. Merci d’avance pour votre collaboration. L'équipe Novae

On Presolar Stardust Grains from CO Classical Novae

Science.gov (United States)

Iliadis, Christian; Downen, Lori N.; José, Jordi; Nittler, Larry R.; Starrfield, Sumner

2018-03-01

About 30%–40% of classical novae produce dust 20–100 days after the outburst, but no presolar stardust grains from classical novae have been unambiguously identified yet. Although several studies claimed a nova paternity for certain grains, the measured and simulated isotopic ratios could only be reconciled, assuming that the grains condensed after the nova ejecta mixed with a much larger amount of close-to-solar matter. However, the source and mechanism of this potential post-explosion dilution of the ejecta remains a mystery. A major problem with previous studies is the small number of simulations performed and the implied poor exploration of the large nova parameter space. We report the results of a different strategy, based on a Monte Carlo technique, that involves the random sampling over the most important nova model parameters: the white dwarf composition; the mixing of the outer white dwarf layers with the accreted material before the explosion; the peak temperature and density; the explosion timescales; and the possible dilution of the ejecta after the outburst. We discuss and take into account the systematic uncertainties for both the presolar grain measurements and the simulation results. Only those simulations that are consistent with all measured isotopic ratios of a given grain are accepted for further analysis. We also present the numerical results of the model parameters. We identify 18 presolar grains with measured isotopic signatures consistent with a CO nova origin, without assuming any dilution of the ejecta. Among these, the grains G270_2, M11-334-2, G278, M11-347-4, M11-151-4, and Ag26 have the highest probability of a CO nova paternity.

A new species of Neosilba (Diptera, Lonchaeidae from Brazil Uma nova espécie de Neosilba (Diptera, Lonchaeidae do Brasil

Directory of Open Access Journals (Sweden)

Pedro C. Strikis

2009-09-01

Full Text Available A new species of Neosilba McAlpine, 1962, N. pradoi sp. nov., is described and illustrated. This new species was found in the south of Brazil (Rio Grande do Sul and Santa Catarina, in the southeast (State of São Paulo and center west (State of Mato Grosso do Sul. It has been reared from fruits of guava (Psidium guajava, Myrtaceae, "araçá" (Psidium cattleyanum, Myrtaceae, "guabiroba" (Campomanesia xanthocarpa, Myrtaceae, Surinam cherry (Malpighia emarginata, Malpighiaceae, cherry (Prunus avium, Rosaceae, orange (Citrus sinensis, Rutaceae, "ingá" (Inga laurina, Fabaceae, "esporão-de-galo" (Celtis iguanae, Ulmaceae and passion fruit (Passiflora edulis, Passifloraceae.Uma nova espécie de Neosilba McAlpine, 1962, N. pradoi sp. nov., é descrita e ilustrada. Esta nova espécie foi encontrada no sul do Brasil (Rio Grande do Sul e Santa Catarina, no sudeste (Estado de São Paulo e na região centro-oeste (Estado do Mato Grosso do Sul. Foi obtida de frutos de goiaba (Psidium guajava, Myrtaceae, araçá (Psidium cattleyanum, Myrtaceae, guabiroba (Campomanesia xanthocarpa, Myrtaceae, acerola (Malpighia emarginata, Malpighiaceae, cereja (Prunus avium, Rosaceae, laranja (Citrus sinensis, Rutaceae, ingá (Inga laurina, Fabaceae, esporão-de-galo (Celtis iguanae, Ulmaceae e maracujá (Passiflora edulis, Passifloraceae.

NUCLEAR MIXING METERS FOR CLASSICAL NOVAE

Energy Technology Data Exchange (ETDEWEB)

Kelly, Keegan J.; Iliadis, Christian; Downen, Lori; Champagne, Art [Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3255 (United States); José, Jordi [Departament de Física i Enginyeria Nuclear, EUETIB, Universitat Politècnica de Catalunya, E-08036 Barcelona (Spain)

2013-11-10

Classical novae are caused by mass transfer episodes from a main-sequence star onto a white dwarf via Roche lobe overflow. This material possesses angular momentum and forms an accretion disk around the white dwarf. Ultimately, a fraction of this material spirals in and piles up on the white dwarf surface under electron-degenerate conditions. The subsequently occurring thermonuclear runaway reaches hundreds of megakelvin and explosively ejects matter into the interstellar medium. The exact peak temperature strongly depends on the underlying white dwarf mass, the accreted mass and metallicity, and the initial white dwarf luminosity. Observations of elemental abundance enrichments in these classical nova events imply that the ejected matter consists not only of processed solar material from the main-sequence partner but also of material from the outer layers of the underlying white dwarf. This indicates that white dwarf and accreted matter mix prior to the thermonuclear runaway. The processes by which this mixing occurs require further investigation to be understood. In this work, we analyze elemental abundances ejected from hydrodynamic nova models in search of elemental abundance ratios that are useful indicators of the total amount of mixing. We identify the abundance ratios ΣCNO/H, Ne/H, Mg/H, Al/H, and Si/H as useful mixing meters in ONe novae. The impact of thermonuclear reaction rate uncertainties on the mixing meters is investigated using Monte Carlo post-processing network calculations with temperature-density evolutions of all mass zones computed by the hydrodynamic models. We find that the current uncertainties in the {sup 30}P(p, γ){sup 31}S rate influence the Si/H abundance ratio, but overall the mixing meters found here are robust against nuclear physics uncertainties. A comparison of our results with observations of ONe novae provides strong constraints for classical nova models.

OS CENTROS LOGÍSTICOS E INDUSTRIAIS ADUANEIROS E A INTEGRAÇÃO TERRITORIAL NO ESTADO DE SÃO PAULO

Directory of Open Access Journals (Sweden)

Lucas Ferreira Rosa Penha

2009-12-01

Full Text Available De agosto a dezembro de 2006 esteve em vigência uma medida provisória que alterava os procedimentos de criação de estações aduaneiras em zona secundária (portos secos e criava, assim, uma nova categoria de recinto aduaneiro: o Centro Logístico e Industrial Aduaneiro (CLIA. São armazéns alfandegados onde se realizam os procedimentos de desembaraço aduaneiro na importação e exportação de mercadorias, entretanto, não estão localizados nas zonas de portos e aeroportos (zona primária. A medida estabeleu uma “liberalização” do setor ao transferir a iniciativa da criação destes recintos à esfera privada quando até então era de encargo exclusivo da Receita Federal, por meio de processos licitatórios. Trata-se de objetos geográficos com densidades técnicas e normativas que firmam-se como alternativa aos portos e aeroportos para os procedimentos de desembaraço aduaneiro. O presente trabalho pretende entender as implicações territoriais destas novas estruturas no estado de São Paulo, em um período caracterizado pela dispersão e dissolução do processo produtivo e pela crescente importância da circulação dentro deste.

Nucleosynthesis in nova outbursts

Energy Technology Data Exchange (ETDEWEB)

Iliadis, C [TRIUMF, Vancouver, BC (Canada); [Univ. of Toronto, McLennan Physical Labs., Toronto, ON (Canada); Azuma, R E [Univ. of Toronto, McLennan Physical Lab., Toronto, ON (Canada); Buchmann, L [TRIUMF, Vancouver, BC (Canada); and others

1994-02-01

Astronomical observations have shown that He, CNO material and/or heavy elements are considerably enriched in certain nova ejecta relative to solar matter. The heavy element enrichments can be explained by the dredge-up of matter from an underlying ONeMg white dwarf and subsequent redistribution of the material by the rp-process. The proton capture reactions on 32{sup S} and 36{sup A}r important for hydrogen burning during nova outbursts have been measured experimentally. The derived stellar reaction rates have been incorporated into large-scale network calculations and the astrophysical consequences are discussed. (author) 17 refs., 2 figs.

The distances of the Galactic Novae

Science.gov (United States)

Ozdonmez, Aykut; Guver, Tolga; Cabrera-Lavers, Antonio; Ak, Tansel

2016-07-01

Using location of the RC stars on the CMDs obtained from the UKIDSS, VISTA and 2MASS photometry, we have derived the reddening-distance relations towards each Galactic nova for which at least one independent reddening measurement exists. We were able to determine the distances of 72 Galactic novae and set lower limits on the distances of 45 systems. The reddening curves of the systems are presented. These curves can be also used to estimate reddening or the distance of any source, whose location is close to the position of the nova in our sample. The distance measurement method in our study can be easily applicable to any source, especially for ones that concentrated along the Galactic plane.

Nova: the laser fusion breakeven experiment

International Nuclear Information System (INIS)

Godwin, R.O.; Glaze, J.A.; Hagen, W.F.; Holzrichter, J.F.; Simmons, W.W.; Trenholme, J.B.

1979-01-01

A new laboratory building is being constructed adjacent to the Shiva laser to house the Phase I $137M ten-beam Nova laser and a target chamber designed for twenty beams. The first ten beams will be operational in early 1980. Following Phase I, it is planned that the Shiva laser will be shut down and upgraded into ten Nova laser beams. These beams will then be combined with Nova Phase I beams to provide the full twenty beams having a minimum output energy of 300 kJ in a 3 nc pulse, or a power capability of 300 terawatts (10 12 watts) in a 100 ps pulse. This paper will describe the Phase I engineering project

Can isolated single black holes produce X-ray novae?

Science.gov (United States)

Matsumoto, Tatsuya; Teraki, Yuto; Ioka, Kunihito

2018-03-01

Almost all black holes (BHs) and BH candidates in our Galaxy have been discovered as soft X-ray transients, so-called X-ray novae. X-ray novae are usually considered to arise from binary systems. Here, we propose that X-ray novae are also caused by isolated single BHs. We calculate the distribution of the accretion rate from interstellar matter to isolated BHs, and find that BHs in molecular clouds satisfy the condition of the hydrogen-ionization disc instability, which results in X-ray novae. The estimated event rate is consistent with the observed one. We also check an X-ray novae catalogue (Corral-Santana et al.) and find that 16/59 ˜ 0.27 of the observed X-ray novae are potentially powered by isolated BHs. The possible candidates include IGR J17454-2919, XTE J1908-094, and SAX J1711.6-3808. Near-infrared photometric and spectroscopic follow-ups can exclude companion stars for a BH census in our Galaxy.

SN 2010U: A LUMINOUS NOVA IN NGC 4214

International Nuclear Information System (INIS)

Humphreys, Roberta M.; Helton, L. Andrew; Prieto, Jose L.; Rosenfield, Philip; Williams, Benjamin; Murphy, Jeremiah; Dalcanton, Julianne; Gilbert, Karoline; Kochanek, Christopher S.; Stanek, K. Z.; Khan, Rubab; Szczygiel, Dorota; Mogren, Karen; Fesen, Robert A.; Milisavljevic, Dan

2010-01-01

The luminosity, light curve, post-maximum spectrum, and lack of a progenitor on deep pre-outburst images suggest that SN 2010U was a luminous, fast nova. Its outburst magnitude is consistent with that for a fast nova using the maximum magnitude-rate of decline relationship for classical novae.

PHOTOMETRIC AND SPECTROSCOPIC PROPERTIES OF NOVAE IN THE LARGE MAGELLANIC CLOUD

International Nuclear Information System (INIS)

Shafter, A. W.

2013-01-01

The photometric and spectroscopic properties of the 43 known LMC nova candidates are summarized and reviewed. Of these, photometric data sufficient to establish decline rates are available for 29 novae, while spectroscopic data sufficient to establish the spectroscopic classes are available for 18 systems. Half of the 18 novae belong to the Fe II class, with the remaining nine belonging to either the He/N or the Fe IIb classes. As seen in previous nova studies of M31 and M33, the He/N and Fe IIb novae have on average faster photometric developments than do their Fe II counterparts. Overall, the available photometry confirms earlier studies, and shows conclusively that LMC novae have faster rates of decline than do novae in the Galaxy and M31. It appears that the increased fraction of faster, He/N and Fe IIb novae observed in the LMC compared with M31 is almost certainly the result of differences in the underlying stellar population between the two galaxies. We propose that the younger population seen in the LMC compared with M31's bulge (where most of the novae are found), produces progenitor binaries with higher average white dwarf masses. The higher mean white dwarf mass not only produces a larger fraction of fast, He/N novae compared with M31, but also results in a relatively large recurrent nova population.

Nova Aquilae 1982: the nature of its dust

International Nuclear Information System (INIS)

Longmore, A.J.; Williams, P.M.

1984-01-01

Infrared photometric measurements of Nova Aquilae 1982, covering a period from 37 to 261 days after its discovery, have been obtained. Thermal emission was present even from the first observation. The observations show that the conventional picture of dust forming in the nova ejecta does not apply in this case, and suggest that a re-examination of the infrared modelling of earlier novae would be worthwhile. (U.K.)

Dust formation and ionization in novae

International Nuclear Information System (INIS)

Yamamoto, Tetsuo; Sato, Shuji; Nariai, Kyoji.

1979-01-01

In order to explain the fact that some novae show the increase of infrared radiation indicating the formation of circumstellar dust grains while some others do not, the theory that the formation of dust in the circumstellar envelope of a nova depends on the intensity of ultraviolet radiation from a central star has been presented. It is known that the central star of a nova emits radiation at nearly constant rate, and its effective temperature rises. It was concluded that the novae with higher emission than a certain value are the poor candidates for dust formation because the whole envelope is ionized before dust is formed. But this conclusion is misleading. The evolution of the ultraviolet radiation emanating from a central star is summarized. The condensation of grains is possible when the partial pressure of the vapor, from which the grains are formed, becomes higher than the saturation vapor pressure. The temperature of grains can be estimated by equating the radiations absorbed and emitted. The grains evaporate if the grain temperature is higher than the condensation temperature. The formation of a Stroemgren sphere in the exploding envelope of a nova is discussed. For the formation of grains, it is necessary that temperature drops below the condensation temperature before the whole envelope is ionized. Hence dust grains do not grow if the grain temperature at a phase is higher than the condensation temperature. (Kako, I.)

ON THE SPECTROSCOPIC CLASSES OF NOVAE IN M33

International Nuclear Information System (INIS)

Shafter, A. W.; Darnley, M. J.; Bode, M. F.; Ciardullo, R.

2012-01-01

We report the initial results from an ongoing multi-year spectroscopic survey of novae in M33. The survey resulted in the spectroscopic classification of six novae (M33N 2006-09a, 2007-09a, 2009-01a, 2010-10a, 2010-11a, and 2011-12a) and a determination of rates of decline (t 2 times) for four of them (2006-09a, 2007-09a, 2009-01a, and 2010-10a). When these data are combined with existing spectroscopic data for two additional M33 novae (2003-09a and 2008-02a), we find that five of the eight novae with available spectroscopic class appear to be members of either the He/N or Fe IIb (hybrid) classes, with only two clear members of the Fe II spectroscopic class. This initial finding is very different from what would be expected based on the results for M31 and the Galaxy where Fe II novae dominate, and the He/N and Fe IIb classes together make up only ∼20% of the total. It is plausible that the increased fraction of He/N and Fe IIb novae observed in M33 thus far may be the result of the younger stellar population that dominates this galaxy, which is expected to produce novae that harbor generally more massive white dwarfs than those typically associated with novae in M31 or the Milky Way.

Assurance management program for the 30 Nova laser fusion project

International Nuclear Information System (INIS)

Levy, A.J.

1983-01-01

The Nova assurance management program was developed using the quality assurance (QA) approach first implemented at LLNL in early 1978. The LLNL QA program is described as an introduction to the Nova assurance management program. The Nova system is described pictorially through the Nova configuration, subsystems and major components, interjecting the QA techniques which are being pragmatically used to assure the successful completion of the project

VIDEOJUEGOS EN EL APRENDIZAJE: OPORTUNIDADES Y DESAFÍOS

Directory of Open Access Journals (Sweden)

Stella Massa

2017-08-01

En la actualidad se han desarrollado medios innovadores como las Tecnologías emergentes en las que se incluyen los videojuegos. Los videojuegos son una de las fuentes de entretenimiento especialmente para los jóvenes. Ese potencial puede explotarse en los procesos de instrucción en la medida que conozcamos más de sus atributos y de los mecanismos de incorporación en el aula. Con este objetivo se indagan y describen las características y oportunidades que ofrece el videojuego como dispositivo cultural y en particular educativo.

ANTECEDENTES DEL USO DE LOS MEDIOS SOCIALES POR EL TURISTA: MOTIVACIÓN, OPORTUNIDAD Y CAPACIDAD

Directory of Open Access Journals (Sweden)

Desiderio Gutiérrez Taño

2013-01-01

Full Text Available El presente trabajo utiliza el modelo MOA para analizar en qué medida la motivación, la oportunidad y la capacidad de los usuarios son factores determinantes de las intenciones de uso de medios sociales en la organización y desarrollo de viajes turísticos. Las conclusiones del estudio revelan que las intenciones de uso de los medios sociales se ven afectadas por la motivación y las capacidades de los usuarios y, sin embargo, no se ven influenciadas por la oportunidad. A su vez, en las motivaciones influyen los beneficios funcionales y hedónicos, pero no los sociales.

Nova Scotia Power : in-stream tidal

International Nuclear Information System (INIS)

Meade, K.

2007-01-01

The Government of Nova Scotia, the Government of New Brunswick, Nova Scotia Power and others have funded a feasibility study of North American sites for commercial instream tidal power. In July 2007, Nova Scotia Power received partial funding for a demonstration project. This presentation provided information on a demonstration plant for tidal power run by Nova Scotia Power. It discussed the benefits of the Open Hydro technology for this plant. In this simple design, the generator is on the circumference of the turbine. The design does not involve any power transmission systems or any pitching of blades. In addition, the technology is environmentally sound as it is completely shrouded, has low rotational speed, and a large open centre allows fish to pass through, and it does not require lubricants. The last benefit that was presented was the scale up of 250 kW machine deployed in a European test facility. The presentation also discussed the advantages of developing tidal power at this time. It was concluded that tidal energy has significant potential. Although it is intermittent, it is predictable and bulk power system can be scheduled to accommodate it. figs

Análisis de supervivencia según la oportunidad de atención en la enfermedad coronaria

OpenAIRE

Fabián A. Dávila; Diana A. Pardo; Antonio J. Lewis; Luis Vargas

2016-01-01

Introducción: La oportunidad en la atención de los servicios de urgencias es una determinante de la calidad en la salud asociado con la mortalidad, se pretende definir la relación entre la supervivencia de los pacientes con la enfermedad coronaria en la unidad de cuidados coronarios con la oportunidad de atención en urgencias. Materiales y métodos: Se realizó un estudio descriptivo retrospectivo, se extrajeron los registros de la unidad de cuidado coronario, urgencias y los certificados de...

Characterisation and application of NovaFiber lignin

NARCIS (Netherlands)

Gosselink, R.J.A.; Snijder, M.H.B.; Kranenbarg, A.; Keijsers, E.R.P.; Jong, de E.; Stigsson, L.L.

2004-01-01

Sulphur-free lignin coming from a novel alkaline-pulping process called NovaFiber, which has been developed by KIRAM AB, has been characterised and evaluated for potential applications. A Kraft lignin has been used for comparison. Considering the characterisation results of a NovaFiber softwood and

Big and Little Feet Provincial Profiles: Nova Scotia

Directory of Open Access Journals (Sweden)

Sarah Dobson

2017-09-01

Full Text Available This communiqué provides a summary of the production- and consumption-based greenhouse gas emissions accounts for Nova Scotia, as well as their associated trade flows. It is part of a series of communiqués profiling the Canadian provinces and territories.1 In simplest terms, a production-based emissions account measures the quantity of greenhouse gas emissions produced in Nova Scotia. In contrast, a consumption-based emissions account measures the quantity of greenhouse gas emissions generated during the production process for final goods and services that are consumed in Nova Scotia through household purchases, investment by firms and government spending. Trade flows refer to the movement of emissions that are produced in Nova Scotia but which support consumption in a different province, territory or country (and vice versa. For example, emissions at the Port of Halifax that are associated with goods that are subsequently exported to Ontario for sale are recorded as a trade flow from Nova Scotia to Ontario. Moving in the opposite direction, emissions associated with the production of motor gasoline in New Brunswick that is exported to Nova Scotia for sale are recorded as a trade flow from New Brunswick to Nova Scotia. For further details on these results in a national context, the methodology for generating them and their policy implications, please see the companion papers to this communiqué series: (1 Fellows and Dobson (2017; and (2 Dobson and Fellows (2017. Additionally, the consumption emissions and trade flow data for each of the provinces and territories are available at: http://www.policyschool.ca/embodied-emissions-inputs-outputs-datatables-2004-2011/.

Continuum emission from classical nova winds

International Nuclear Information System (INIS)

Harkness, R.P.

1983-01-01

The emergent continuum of a slow classical nova during outburst is considered in the quasi-steady optically thick, transonic wind model. Models are presented for various steady mass loss rates and are related to the evolution of slow novae during decline and early post-maximum. The continuum emission is found to depart radically from a blackbody spectrum and to exhibit features common to highly extended stellar atmospheres. (author)

Nova chain design and performance

International Nuclear Information System (INIS)

Simmons, W.W.; Glaze, J.A.; Trenholme, J.B.; Hagen, W.F.

1980-01-01

During the past year design of the Nova laser has undergone significant change as a result of developments in our laser glass and optical coating evaluation programs. Two notable aspects of the glass development program deserve emphasis. First, vendor qualification for production of fluorophosphate laser glass is progressing satisfactorily. There is a reasonable expectation that vendors can meet fluorophosphate glass specifications within Nova schedule constraints. Secondly, recent gain saturation measurements have shown that the saturation fluence of the fluorophosphate glass is larger than previously supposed (approx. 5.5 J/cm 2 ) and in fact is somewhat larger than Shiva silicate glasses. Hence, performance of Nova for pulses in the 3 ns and longer range should be satisfactory. For pulses in the 1 ns regime, of course, the fluorophosphate chain will have superior performance to that of silicate because of its low nonlinear index of refraction (approx. 30% that of silicate). These and other considerations have led us to choose a chain design based upon the use of fluorophosphate glass in our amplifiers

Slow magnetic monopoles search in NOvA

Science.gov (United States)

Antoshkin, Alexander; Frank, Martin

2018-04-01

The NOvA far detector is well suited for finding exotic particles due to its technical features (see [1]). One type of those exotic particles is a "slow" magnetic monopole. It is assumed that the energy deposition of such monopoles should be enough to be registered (see [2]). Measurement of the expected signals was performed on the NOvA test bench at JINR (see [3]). Result of this measurement allows us to perform slow monopole's research using NOvA software and hardware with high efficiency. As a whole, the research can lead to a discovery, or it can limit the existence of monopoles in a wide range of parameters, previously unreachable in other experiments (MACRO, SLIM, RICE, IceCube). Several special software tools have been developed. Slow Monopole Trigger has been created and implemented in the NOvA Data-Driven-Trigger system. Also, an online reconstruction algorithm has been developed and tested on 5% of the data. A technical description of these tools and current results of the analysis are presented in this work.

Novae, supernovae, and the island universe hypothesis

International Nuclear Information System (INIS)

Van Den Bergh, S.

1988-01-01

Arguments in Curtis's (1917) paper related to the island universe hypothesis and the existence of novae in spiral nebulae are considered. It is noted that the maximum magnitude versus rate-of-decline relation for novae may be the best tool presently available for the calibration of the extragalactic distance scale. Light curve observations of six novae are used to determine a distance of 18.6 + or - 3.5 MPc to the Virgo cluster. Results suggest that Type Ia supernovae cannot easily be used as standard candles, and that Type II supernovae are unsuitable as distance indicators. Factors other than precursor mass are probably responsible for determining the ultimate fate of evolving stars. 83 references

NOVA: a software to analyze complexome profiling data

NARCIS (Netherlands)

Giese, H.; Ackermann, J.; Heide, H.; Bleier, L.; Drose, S.; Wittig, I.; Brandt, U.; Koch, I.

2015-01-01

SUMMARY: We introduce nova, a software for the analysis of complexome profiling data. nova supports the investigation of the composition of complexes, cluster analysis of the experimental data, visual inspection and comparison of experiments and many other features. AVAILABILITY AND IMPLEMENTATION:

Nucleosynthesis and the nova outburst

International Nuclear Information System (INIS)

Starrfield, S.

1995-01-01

A nova outburst is the consequence of the accretion of hydrogen rich material onto a white dwarf and it can be considered as the largest hydrogen bomb in the Universe. The fuel is supplied by a secondary star in a close binary system while the strong degeneracy of the massive white dwarf acts to contain the gas during the early stages of the explosion. The containment allows the temperature in the nuclear burning region to exceed 10 8 K under all circumstances. As a result a major fraction of CNO nuclei in the envelope are transformed into β + -unstable nuclei. We discuss the effects of these nuclei on the evolution. Recent observational studies have shown that there are two compositional classes of novae; one which occurs on carbon-oxygen white dwarfs, and a second class that occurs on oxygen-neon-magnesium white dwarfs. In this review we will concentrate on the latter explosions since they produce the most interesting nucleosynthesis. We report both on the results of new observational determinations of nova abundances and, in addition, new hydrodynamic calculations that examine the consequences of the accretion process on 1.0M circle-dot , 1.25M circle-dot , and 1.35M circle-dot white dwarfs. Our results show that novae can produce 22 Na, 26 Al, and other intermediate mass nuclei in interesting amounts. We will present the results of new calculations, done with updated nuclear reaction rates and opacities, which exhibit quantitative differences with respect to published work

Dal Centro Storico alla Città Storica: la dimensione progettuale della conservazione − Il caso di Roma

Directory of Open Access Journals (Sweden)

Elio Trusiani

2004-01-01

Full Text Available Com a adoção do Plano Regulador, Roma finalmente adquiriu uma nova perspectiva para construir o seu desenvolvimento, partir de um sistema histórico-ambiental tutelado e valorizado (base concreta da sustentabilidade, valorizando a reorganização funcional e espacial das suas estruturas subterrâneas. Uma cidade projetada em uma dimensão metropolitana e organizada segundo um modelo policêntrico – no qual se chama atenção aos trabalhos regulares e superamentos do velho conceito de centro “histórico”, conjugado à parte mais antiga do centro urbano, e a assunção do conceito de “cidade histórica” – compreende um universo mais vasto e difuso no território (do medieval ao Renascimento ao Novecentos. Um método inovador de leitura da cidade, não mais por zonas homogêneas mas por tecidos − isso permite superar o modo de tratamento unitário por zonas inteiras e lê-las ao invés de diferenciá-las, sobretudo em uma cidade como Roma, e para tanto ler as atuais exigências de transformação, procurando conferir, ou restituir, ao final cidade histórica a difícil tarefa de regular a valorização, orientar as estratégias de requalificação, construir as condições do projeto, recuperando, em tal sentido, a dimensão projetual da conservação.

Lima: poder, centro y centralidad: Del centro nativo al centro neoliberal

Directory of Open Access Journals (Sweden)

Wiley Ludeña

2002-05-01

Full Text Available El centro y la idea de centro es una forma de construcción histórica práctica e ideológica que se origina y se reproduce como expresión de las demandas de reproducción social, económica, política, cultural y simbólica de determinados sectores en su experiencia de producir ciudad. El artículo ofrece un panorama general sobre la evolución y las transformaciones del área central de Lima desde su existencia pre inca e inca, hasta su posterior constitución colonial y republicana. Concluye con un registro de la situación actual. El área central es analizada tanto en su condición de realidad específica, como en relación al conjunto de la ciudad y la sociedad. Los problemas son evaluados desde la perspectiva de su significado económico, político, social, cultural, antropológico, arquitectónico y urbanísticoThe centre and the idea of centre is a way of practical and ideological construction, that origins and reproduces as an expression of the requests of social, economical, political, cultural and symbolic reproduction of determinate sectors in its experience of producing city. The article offers an overview about the evolution and the transformations of Lima’s central area, since its pre inca and inca existence, to its later colonial and republican constitution. Ends with a register of the actual situation. The central area is analyzed as in its condition of an specific reality, as its relation with the whole city and the society. The problems are evaluated from the perspective of the economic, political, social, cultural, anthropologic, architectonic and urbanistic meaning

A new method of determining the ejected mass of novae

Energy Technology Data Exchange (ETDEWEB)

Sparks, W.M.

1994-12-31

A new method of determining the ejected mass of novae based on simple, reasonable assumptions is presented. This method assumes that the remnant mass on the white dwarf is the same as that from the previous nova outburst. The hydrogen, helium, and metal abundances of the accreted material from the secondary must also be known or assumed. The white dwarf`s mass has a small effect because the amount of hydrogen consumed during the thermonuclear runaway only depends weakly upon this mass. If the composition of the ejecta and the time of the remnant shell burnout are determined from observations, then the ejected and remnant masses can be deduced. At present only a sharp decrease in the X-rays observed by ROSAT has been attributed to this remnant burnout and only for two novae: GQ Mus and V1974 Cyg. The ejected and remnant masses for these two novae are calculated. If other indicators of nova remnant burnout, such as a rapid decrease in high-ionization lines, can be identified, then this method could be applied to additional novae.

The NOvA software testing framework

International Nuclear Information System (INIS)

Tamsett, M; Group, C

2015-01-01

The NOvA experiment at Fermilab is a long-baseline neutrino experiment designed to study vε appearance in a vμ beam. NOvA has already produced more than one million Monte Carlo and detector generated files amounting to more than 1 PB in size. This data is divided between a number of parallel streams such as far and near detector beam spills, cosmic ray backgrounds, a number of data-driven triggers and over 20 different Monte Carlo configurations. Each of these data streams must be processed through the appropriate steps of the rapidly evolving, multi-tiered, interdependent NOvA software framework. In total there are greater than 12 individual software tiers, each of which performs a different function and can be configured differently depending on the input stream. In order to regularly test and validate that all of these software stages are working correctly NOvA has designed a powerful, modular testing framework that enables detailed validation and benchmarking to be performed in a fast, efficient and accessible way with minimal expert knowledge. The core of this system is a novel series of python modules which wrap, monitor and handle the underlying C++ software framework and then report the results to a slick front-end web-based interface. This interface utilises modern, cross-platform, visualisation libraries to render the test results in a meaningful way. They are fast and flexible, allowing for the easy addition of new tests and datasets. In total upwards of 14 individual streams are regularly tested amounting to over 70 individual software processes, producing over 25 GB of output files. The rigour enforced through this flexible testing framework enables NOvA to rapidly verify configurations, results and software and thus ensure that data is available for physics analysis in a timely and robust manner. (paper)

The assurance management program for the Nova laser fusion project

International Nuclear Information System (INIS)

Levy, A.J.

1983-01-01

In a well managed project, Quality Assurance is an integral part of the management activities performed on a daily basis. Management assures successful performance within budget and on schedule by using all the good business, scientific, engineering, quality assurance, and safety practices available. Quality assurance and safety practices employed on Nova are put in perspective by integrating them into the overall function of good project management. The Inertial Confinement Fusion (ICF) approach is explained in general terms. The laser ICF and magnetic fusion facilities are significantly different in that the laser system is used solely as a highly reliable energy source for performing plasma physics experiments related to fusion target development; by contrast, magnetic fusion facilities are themselves the experiments. The Nova project consists of a 10-beam, 74 cm aperture neodymium-glass laser experimental facility which is being constructed by the Lawrence Livermore National Laboratory (LLNL) for the U.S. Department of Energy. Nova has a total estimated cost of $176M and will become operational in the Fall of 1984. The Nova laser will be used as the high energy driver for studying the regime of ignition for ICF. The Nova assurance management program was developed using the quality assurance (QA) approach first implemented at LLNL in early 1978. The LLNL QA program is described as an introduction to the Nova assurance management program. The Nova system is described pictorially through the Nova configuration, subsystems and major components, interjecting the QA techniques which are being pragmatically used to assure the successful completion of the project

Saúde mental e a continuidade do cuidado em centros de saúde de Belo Horizonte, MG Salud mental y la continuidad del cuidado en centros de salud de una ciudad en Sudeste de Brasil Mental health and continuity of care in healthcare centers in a city of Southeastern Brazil

Directory of Open Access Journals (Sweden)

Graziella Lage Oliveira

2008-08-01

Full Text Available OBJETIVO: Analisar os fatores associados à continuidade do cuidado em saúde mental de pacientes encaminhados a centros de saúde. MÉTODOS: Foi conduzido um estudo de seguimento de 98 pacientes encaminhados a oito centros de saúde com equipe de saúde mental da área de abrangência de um centro de referência à saúde mental, em Belo Horizonte, MG, atendidos entre 2003 e 2004. Variáveis sociodemográficas, clínicas e referentes à continuidade foram descritas e em seguida comparadas, utilizando o teste do qui-quadrado. RESULTADOS: Após o encaminhamento, 35 pacientes não compareceram para o primeiro atendimento nos centros de saúde. Dos que o fizeram, 38 continuaram em tratamento. Retornar ao centro de referência para nova consulta após o encaminhamento e ter tido mais de dois encaminhamentos foram fatores facilitadores da continuidade do cuidado. Nenhuma característica individual esteve associada à continuidade. CONCLUSÕES: Os achados sugerem haver uma falha na proposta da linha de cuidado. A continuidade do tratamento parece estar mais relacionada a fatores referentes ao serviço do que a características do paciente.OBJETIVO: Analizar los factores asociados a la continuidad del cuidado en salud mental de pacientes encaminados a centros de salud. MÉTODOS: Fue realizado un estudio de seguimiento de 98 pacientes encaminados a ocho centros de salud con equipo de salud mental del área de alcance de un centro de referencia de salud mental, en Belo Horizonte, Sudeste de Brasil, atendidos entre 2003 e 2004. Variables sociodemográficas, clínicas y referentes a la continuidad fueron descritas y en seguida comparadas, utilizando el teste do qui-cuadrado. RESULTADOS: Después del encaminamiento, 35 pacientes no acudieron para la primera atención en centros de salud. De los que hicieron, 38 continuaron en tratamiento. Retornar al centro de referencia para nueva consulta después del encaminamiento haber tenido más de dos

Radio Observations of Gamma-ray Novae

Science.gov (United States)

Linford, Justin D.; Chomiuk, L.; Ribeiro, V.; project, E.-Nova

2014-01-01

Recent detection of gamma-ray emission from classical novae by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope surprised many in the astronomical community. We present results from radio observations, obtained using the Karl G. Jansky Very Large Array (VLA), of three gamma-ray novae: Mon2012, Sco2012, and Del2013. Radio observations allow for the calculation of ejecta masses, place limits on the distances, and provide information about the gamma-ray emission mechanism for these sources.

Does alleviating poverty affect mothers' depressive symptoms? A quasi-experimental investigation of Mexico's Oportunidades programme.

Science.gov (United States)

Ozer, Emily J; Fernald, Lia C H; Weber, Ann; Flynn, Emily P; VanderWeele, Tyler J

2011-12-01

Depression is a major cause of disability, particularly among women; poverty heightens the risk for depression. Beyond its direct effects, maternal depression can harm children's health and development. This study aimed to assess the effects of a large-scale anti-poverty programme in Mexico (Oportunidades) on maternal depressive symptoms. In 2003, 5050 women living in rural communities who had participated in Oportunidades since its inception were assessed and compared with a group of 1293 women from matched communities, whose families had received no exposure to Oportunidades at the time of assessment but were later enrolled. Self-reported depressive symptoms were measured using the Center for Epidemiologic Studies Depression Scale (CES-D). Ordinary least squares regressions were used to evaluate the treatment effect of programme participation on depression while adjusting for covariates and clustering at the community level. Women in the treatment group had lower depressive symptoms than those in the comparison group (unadjusted mean CES-D scores: 16.9 ± 9.8 vs 18.6 ± 10.2). In multivariable analyses, programme participation was associated with lower depression whilst controlling for maternal age, education and household demographic, ethnicity and socio-economic variables [β= -1.7 points, 95% confidence interval (95% CI) -2.46 to -0.96, P poverty and depressive symptoms. Our results emphasize that the well-being of individuals is responsive to macro-level economic policies and programmes.

ToO Galactic Nova -- Michelle ``Quick Response''

Science.gov (United States)

Helton, L. Andrew; Woodward, Chick; Evans, Nye; Geballe, Tom; Spitzer Nova Team

2006-08-01

Stars are the engines of energy production and chemical evolution in our Universe, depositing radiative and mechanical energy into their environments and enriching the ambient ISM with elements synthesized in their interiors and dust grains condensed in their atmospheres. Classical novae (CN) contribute to this cycle of chemical enrichment through explosive nucleosynthesis and the violent ejection of material dredged from the white dwarf progenitor and mixed with the accreted surface layers. We propose to obtain mid-IR spectra of a new galactic CN in outburst to investigate aspects of the CN phenomenon including the in situ formation and mineralogy of nova dust and the elemental abundances resulting from thermonuclear runaway. Synoptic, high S/N Michelle spectra permit: 1) determination of the grain size distribution and mineral composition of nova dust; 2) estimation of chemical abundances of nova ejecta from coronal and other emission line spectroscopy; and 3) measurement of the density and masses of the ejecta. This Gemini `Target of Opportunity' initiative (trigger K=5- 8 mag, assuming adequate PWFS guide stars exist) complements our extensive Spitzer, Chandra, Swift, XMM-Newton CN DDT/ToO programs.

Synoptic Mid-IR Spectra ToO Novae

Science.gov (United States)

Helton, L. Andrew; Woodward, Chick; Evans, Nye; Geballe, Tom; Spitzer Nova Team

2007-02-01

Stars are the engines of energy production and chemical evolution in our Universe, depositing radiative and mechanical energy into their environments and enriching the ambient ISM with elements synthesized in their interiors and dust grains condensed in their atmospheres. Classical novae (CN) contribute to this cycle of chemical enrichment through explosive nucleosynthesis and the violent ejection of material dredged from the white dwarf progenitor and mixed with the accreted surface layers. We propose to obtain mid-IR spectra of a new galactic CN in outburst to investigate aspects of the CN phenomenon including the in situ formation and mineralogy of nova dust and the elemental abundances resulting from thermonuclear runaway. Synoptic, high S/N Michelle spectra permit: 1) determination of the grain size distribution and mineral composition of nova dust; 2) estimation of chemical abundances of nova ejecta from coronal and other emission line spectroscopy; and 3) measurement of the density and masses of the ejecta. This Gemini `Target of Opportunity' initiative (trigger K=5- 8 mag, assuming adequate PWFS guide stars exist) complements our extensive Spitzer, Chandra, Swift, XMM-Newton CN DDT/ToO programs.

Energy distributions of symbiotic novae

International Nuclear Information System (INIS)

Bryan, G.L.; Kwok, S.

1991-01-01

The IRAS low-resolution spectra of three recent symbiotic novae are fitted with a dust continuum radiative transfer model. It is found that the dust shells are detached from the photosphere and that the sizes of the inner radii are correlated with times since outburst. An analysis of the IUE spectra of HM Sge at different epochs suggests that the strength of the 2200 A feature is decreasing with times and the grains responsible for the feature are probably formed in the white dwarf ejecta. A complete accounting of the entire energy budget from radio to X-ray shows that most of the energy is emitted by the cool component in the infrared, and a significant fraction of the flux of the hot component is escaping in the far-ultraviolet. The density-bounded nature of the circumstellar gas nebulae could be the result of a bipolar geometry of the nebulae. Unlike classical novae, the optical outburst of symbiotic novae is due to the ionization of the preexisting envelope of the cool component and is not the result of a sudden ejection by the hot component. 55 refs

Oportunidades e transformação na cidade centro

Directory of Open Access Journals (Sweden)

Teresa Barata Salgueiro

2006-06-01

Full Text Available TRANSFORMATION AND OPPORTUNITIES IN THE INNER CITY. In this paper we wish to contribute towards the understanding of the built environment, transformation mainly in inner cities, in relation to the development of new social demands and new strategies for urban redevelopment. The main argument is based upon the technological-economic component of globalisation, discussed along two main axes (fig. 1. The former is related to the modification of cities’ economic base and their management; the latter concerns the movement of people and the emergence of new lifestyles. Population growth, which brings new residents and visitors to cities, and changes in postmodern consumers’ tastes, which are more concerned with the beautification of their surroundings, serve to influence the growth of the cultural economy and represent new opportunities for inner cities in terms of housing (gentrification, retail, urban revitalisation and events. Economic globalisation and the development of neoliberal ideologies allow for different forms of competitiveness between territories and change in political issues. The importance of economic issues in policy orientation, the development of entrepreneurial types of urban management and coalitions between the public and the private sectors are just some examples of the transformation behind the huge investments in the built environment’s transformation and re-imaging. Changes in urban management and governance strongly impact the real estate development of high quality projects.

Oportunidades do ambiente domiciliar para o desenvolvimento motor Oportunidades del ambiente domiciliar para el desarrollo motor Opportunities in the home environment for motor development

Directory of Open Access Journals (Sweden)

Érica Cesário Defilipo

2012-08-01

Full Text Available OBJETIVO: Avaliar as oportunidades presentes no ambiente domiciliar para o desenvolvimento motor de lactentes. MÉTODOS: Estudo epidemiológico de base populacional, transversal, realizado com 239 lactentes com idade entre três e 18 meses, residentes no município de Juiz de Fora, MG, em 2010. Os participantes foram selecionados por amostragem aleatória estratificada, conglomerada, em múltiplos estágios. Para avaliar a qualidade e quantidade de estímulo motor no ambiente domiciliar foi utilizado o instrumento Affordance in the Home Environment for Motor Development - Infant Scale. Procedeu-se a análise bivariada com aplicação do teste qui-quadrado, seguida de regressão logística multinomial para verificar a associação entre as oportunidades presentes no domicílio e fatores biológicos, comportamentais, demográficos e socioeconômicos. RESULTADOS: As oportunidades de estimulação ambiental foram relativamente baixas. Na análise bivariada, para a faixa etária de três a nove meses, foi encontrada associação com os fatores: ordem de nascimento (p = 0,06, classificação socioeconômica (p = 0,08, renda mensal (p = 0,06 e renda per capita (p = 0,03. No modelo de regressão, prevaleceu a classificação socioeconômica (RC = 7,46; p = 0,03. Para a faixa etária de dez a 18 meses, os fatores associados, na análise bivariada, foram: estado civil materno (p OBJETIVO: Evaluar las oportunidades presentes en el ambiente domiciliar para el desarrollo motor de lactantes. MÉTODOS: Estudio epidemiológico de base poblacional, transversal, realizado con 239 lactantes con edad entre tres y 18 meses, residentes en el municipio de Juiz de Fora, Sureste de Brasil, en 2010. Los participantes se seleccionaron por muestreo aleatorio estratificado, conglomerado, en múltiples fases. Para evaluar la calidad y cantidad de estimulo motor en el ambiente domiciliar se utilizó el instrumento Affordance in the Home Environment for Motor Development

Nova Scotia wind integration study : final report

International Nuclear Information System (INIS)

2008-01-01

An independent study was commissioned by the Nova Scotia Department of Energy to identify and assess the impacts of integrating large scale wind power generation into Nova Scotia's electric power system. The purpose of the study was to help Nova Scotia's efforts towards building its renewable energy supply, in order to secure a local energy resource and to protect the environment. This report provided an overview of Nova Scotia's electric power sector, including organizations involved; existing generation system; existing transmission system; renewable energy standards; Nova Scotia Power integrated resource plan; and 2007 renewable energy request for proposals. The major assumptions for the study that were discussed included system parameters; system capacity reserve requirements; expansion plans to 2020; and allocation of new wind generation by zone. Wind resource data and system dispatch modeling were also presented and transmission system modeling was outlined. This included a discussion of steady state reliability requirements; inputs to the load flow model; load flow study and contingency analysis; intra-province transmission congestion; and potential impacts on system security. The report also presented an approach to impact analysis and mitigation such as the impact on greenhouse gas and other air emissions and the impact of wind energy prices on system costs. It was concluded that one of the most important factors in evaluation of the economic impact of wind power integration is the forecasted fuel prices for the thermal units. If the fuel prices had varied significantly from the forecasted values, the study economic impact results could have been quite different. 55 tabs., 64 figs., 1 appendix

Long-Term Photometry of Very Slow Novae

Directory of Open Access Journals (Sweden)

Chochol D.

2003-12-01

Full Text Available Long-term photographic, photoelectric and recent CCD photometry of the classical nova V723 Cas and symbiotic novae V1329 Cyg, PU Vul, V1016 Cyg and HM Sge were used to find their orbital periods. The arguments in favor of the presence of the third components in these systems are given. Physical processes, responsible for the brightness variations, are discussed.

Centro Vogelstang - Mannheim (Alemania Federal

Directory of Open Access Journals (Sweden)

Striffler, H.

1972-05-01

Full Text Available In the new urban zone of Vogelstang some 20,000 people will live in 4,600 rented dwellings and 700 private homes. The scheme contains all facilities to allow an autonomous life, i.e. primary schools, a secondary school, a college of domestic economy, two Catholic and two Evangelical churches, a kindergarten, an old people's home, a commercial centre, a community centre and an indoor swimming-pool. In the southern area a recreation park has been made with an artificial lake and sports centre. There are plenty of green spaces and playing areas for children.En la nueva zona urbana Vogelstang vivirán unas 20.000 personas en 4.600 viviendas de alquiler y 700 hogares propios. El complejo abarca todas las instalaciones que permiten una vida autónoma: Escuelas primarias. Escuela Superior. Instituto. Escuela de economía doméstica. Dos iglesias católicas y dos evangélicas. Jardín de infancia. Residencia para ancianos. Centro comercial. Centro comunal. Piscina cubierta. En la zona sur se ha creado un parque de recreo con un lago artificial y un centro de deportes. Hay abundantes espacios verdes y lugares de juego para los niños.

Mayores e Internet: La Red como fuente de oportunidades para un envejecimiento activo

Directory of Open Access Journals (Sweden)

Carmen Llorente Barroso

2015-07-01

Full Text Available El progresivo envejecimiento de las sociedades ha llevado a los organismos internacionales y europeos a desarrollar programas de envejecimiento activo, capaces de construir una nueva cultura sobre el papel de las personas mayores en la sociedad. Estos incluyen aspectos sociales de carácter comunicacional que, sin embargo, han tenido menos desarrollo investigador que otros más apremiantes, vinculados a aspectos físicos y económicos. Esta investigación atiende precisamente a estas variables comunicacionales, abordando la vinculación de los mayores con Internet y planteándose dos objetivos principales: Conocer las utilidades que tiene Internet para este colectivo y explicar los motivos que convertirían a este medio en una fuente de oportunidades para un envejecimiento activo. Para satisfacerlos, se utiliza una metodología cualitativa que se apoya en el desarrollo de tres grupos de discusión constituidos por entre cinco y seis personas de 56 a 81 años y moderados por un experto. Los resultados obtenidos del análisis cualitativo del contenido en cada discusión indican que Internet es una fuente de oportunidades para los mayores, que pueden aglutinarse en cuatro categorías: informativas, comunicativas, transaccionales y administrativas, y de ocio y entretenimiento. Estas oportunidades optimizan la calidad de vida de los mayores y contribuyen a su envejecimiento activo, si bien, su máximo aprovechamiento precisa de programas de «e-Inclusion» y metodologías que aproximen Internet a los mayores, facilitándoles una formación en competencias digitales.

The geographic accessibility of pharmacies in Nova Scotia.

Science.gov (United States)

Law, Michael R; Heard, Deborah; Fisher, Judith; Douillard, Jay; Muzika, Greg; Sketris, Ingrid S

2013-01-01

Geographic proximity is an important component of access to primary care and the pharmaceutical services of community pharmacies. Variations in access to primary care have been found between rural and urban areas in Canadian and international jurisdictions. We studied access to community pharmacies in the province of Nova Scotia. We used information on the locations of 297 community pharmacies operating in Nova Scotia in June 2011. Population estimates at the census block level and network analysis were used to study the number of Nova Scotia residents living within 800 m (walking) and 2 km and 5 km (driving) distances of a pharmacy. We then simulated the impact of pharmacy closures on geographic access in urban and rural areas. We found that 40.3% of Nova Scotia residents lived within walking distance of a pharmacy; 62.6% and 78.8% lived within 2 km and 5 km, respectively. Differences between urban and rural areas were pronounced: 99.2% of urban residents lived within 5 km of a pharmacy compared with 53.3% of rural residents. Simulated pharmacy closures had a greater impact on geographic access to community pharmacies in rural areas than urban areas. The majority of Nova Scotia residents lived within walking or short driving distance of at least 1 community pharmacy. While overall geographic access appears to be lower than in the province of Ontario, the difference appears to be largely driven by the higher proportion of rural dwellers in Nova Scotia. Further studies should examine how geographic proximity to pharmacies influences patients' access to traditional and specialized pharmacy services, as well as health outcomes and adherence to therapy. Can Pharm J 2013;146:39-46.

Oportunidades do ambiente domiciliar e fatores associados para o desenvolvimento motor entre três e 18 meses de idade

OpenAIRE

Defilipo, Érica Cesário

2011-01-01

O ambiente domiciliar tem sido apontado na literatura como um dos fatores extrínsecos que mais influencia o desenvolvimento, pois proporciona à criança oportunidades para a exploração que permitem que o comportamento motor seja estimulado de forma natural. A interação com os pais, a variabilidade de estimulação e a disponibilidade de brinquedos são indicadores críticos para a qualidade do ambiente familiar. Os objetivos do presente estudo foram avaliar as oportunidades prese...

SWIFT X-RAY OBSERVATIONS OF CLASSICAL NOVAE. II. THE SUPER SOFT SOURCE SAMPLE

Energy Technology Data Exchange (ETDEWEB)

Schwarz, Greg J. [American Astronomical Society, 2000 Florida Avenue, NW, Suite 400, Washington, DC 20009-1231 (United States); Ness, Jan-Uwe [XMM-Newton Science Operations Centre, ESAC, Apartado 78, 28691 Villanueva de la Canada, Madrid (Spain); Osborne, J. P.; Page, K. L.; Evans, P. A.; Beardmore, A. P. [Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH (United Kingdom); Walter, Frederick M. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800 (United States); Andrew Helton, L. [SOFIA Science Center, USRA, NASA Ames Research Center, M.S. N211-3, Moffett Field, CA 94035 (United States); Woodward, Charles E. [Minnesota Institute of Astrophysics, 116 Church Street S.E., University of Minnesota, Minneapolis, MN 55455 (United States); Bode, Mike [Astrophysics Research Institute, Liverpool John Moores University, Birkenhead CH41 1LD (United Kingdom); Starrfield, Sumner [School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287-1404 (United States); Drake, Jeremy J., E-mail: Greg.Schwarz@aas.org [Smithsonian Astrophysical Observatory, 60 Garden Street, MS 3, Cambridge, MA 02138 (United States)

2011-12-01

The Swift gamma-ray burst satellite is an excellent facility for studying novae. Its rapid response time and sensitive X-ray detector provides an unparalleled opportunity to investigate the previously poorly sampled evolution of novae in the X-ray regime. This paper presents Swift observations of 52 Galactic/Magellanic Cloud novae. We included the X-Ray Telescope (0.3-10 keV) instrument count rates and the UltraViolet and Optical Telescope (1700-8000 A) filter photometry. Also included in the analysis are the publicly available pointed observations of 10 additional novae the X-ray archives. This is the largest X-ray sample of Galactic/Magellanic Cloud novae yet assembled and consists of 26 novae with Super Soft X-ray emission, 19 from Swift observations. The data set shows that the faster novae have an early hard X-ray phase that is usually missing in slower novae. The Super Soft X-ray phase occurs earlier and does not last as long in fast novae compared to slower novae. All the Swift novae with sufficient observations show that novae are highly variable with rapid variability and different periodicities. In the majority of cases, nuclear burning ceases less than three years after the outburst begins. Previous relationships, such as the nuclear burning duration versus t{sub 2} or the expansion velocity of the eject and nuclear burning duration versus the orbital period, are shown to be poorly correlated with the full sample indicating that additional factors beyond the white dwarf mass and binary separation play important roles in the evolution of a nova outburst. Finally, we confirm two optical phenomena that are correlated with strong, soft X-ray emission which can be used to further increase the efficiency of X-ray campaigns.

SWIFT X-RAY OBSERVATIONS OF CLASSICAL NOVAE. II. THE SUPER SOFT SOURCE SAMPLE

International Nuclear Information System (INIS)

Schwarz, Greg J.; Ness, Jan-Uwe; Osborne, J. P.; Page, K. L.; Evans, P. A.; Beardmore, A. P.; Walter, Frederick M.; Andrew Helton, L.; Woodward, Charles E.; Bode, Mike; Starrfield, Sumner; Drake, Jeremy J.

2011-01-01

The Swift gamma-ray burst satellite is an excellent facility for studying novae. Its rapid response time and sensitive X-ray detector provides an unparalleled opportunity to investigate the previously poorly sampled evolution of novae in the X-ray regime. This paper presents Swift observations of 52 Galactic/Magellanic Cloud novae. We included the X-Ray Telescope (0.3-10 keV) instrument count rates and the UltraViolet and Optical Telescope (1700-8000 Å) filter photometry. Also included in the analysis are the publicly available pointed observations of 10 additional novae the X-ray archives. This is the largest X-ray sample of Galactic/Magellanic Cloud novae yet assembled and consists of 26 novae with Super Soft X-ray emission, 19 from Swift observations. The data set shows that the faster novae have an early hard X-ray phase that is usually missing in slower novae. The Super Soft X-ray phase occurs earlier and does not last as long in fast novae compared to slower novae. All the Swift novae with sufficient observations show that novae are highly variable with rapid variability and different periodicities. In the majority of cases, nuclear burning ceases less than three years after the outburst begins. Previous relationships, such as the nuclear burning duration versus t 2 or the expansion velocity of the eject and nuclear burning duration versus the orbital period, are shown to be poorly correlated with the full sample indicating that additional factors beyond the white dwarf mass and binary separation play important roles in the evolution of a nova outburst. Finally, we confirm two optical phenomena that are correlated with strong, soft X-ray emission which can be used to further increase the efficiency of X-ray campaigns.

BOATOS, CRISES E OPORTUNIDADES POLÍTICAS NA ANTIGUIDADE TARDIA

Directory of Open Access Journals (Sweden)

Julio Cesar MAGALHÃES DE OLIVEIRA

Full Text Available RESUMO Comparado à organização política do Principado, o regime imperial da Antiguidade Tardia obteve um controle muito maior sobre a circulação da informação política em decorrência da centralização do poder e do número ainda maior de funcionários qualificados dedicados a coligir, cotejar e recuperar informações em todo o Império. Ainda assim, a vastidão do Império Romano e a lentidão das comunicações continuavam a representar as principais ameaças ao poder absolutista, especialmente nos momentos de crises políticas, quando a própria ausência de informações oficiais alimentava os canais subterrâneos e incontrolados de notícias. Do ponto de vista da plebe urbana e dos atores políticos locais, o recurso a essas notícias clandestinas que nós chamamos de "boatos" podia representar uma tentativa de avaliar a abertura de oportunidades para a ação em um ambiente político marcado por uma profunda incerteza. O objetivo deste artigo é explorar como a plebe urbana, as facções religiosas ou seus líderes percebiam (e encorajavam a difusão de notícias sobre as mudanças no poder imperial como uma "janela de oportunidades" e como uma forma de organizar uma ação coletiva.

Observations and predictions of EUV emission from classical novae

International Nuclear Information System (INIS)

Starrfield, S.; Truran, J.W.; Sparks, W.M.; Krautter, J.

1989-01-01

Theoretical modeling of novae in outburst predicts that they should be active emitters of radiation both in the EUV and soft X-ray wavelengths twice during the outburst. The first time is very early in the outburst when only an all sky survey can detect them. This period lasts only a few hours. They again become bright EUV and soft X-ray emitters late in the outburst when the remnant object becomes very hot and is still luminous. The predictions imply both that a nova can remain very hot for months to years and that the peak temperature at this time strongly depends upon the mass of the white dwarf. It is important to observe novae at these late times because a measurement of both the flux and temperature can provide information about the mass of the white dwarf, the tun-off time scale, and the energy budget of the outburst. We review the existing observations of novae in late stages of their outburst and present some newly obtained data for GQ Mus 1983. We then provide results of new hydrodynamic simulations of novae in outburst and compare the predictions to the observations. 43 refs., 6 figs

La memoria educativa como oportunidad de Servicio Comunitario desde la Escuela de Educación

Directory of Open Access Journals (Sweden)

Enrique Silva

2016-07-01

Full Text Available Se pretende mostrar, a través de un ejemplo concreto, la factibilidad de integrar la práctica del Servicio Comunitario de los estudiantes de Educación Superior con el trabajo que se adelanta desde una línea de investigación en el campo de la historia de la educación en Venezuela. Para ello, se revisa la acción realizada en el Proyecto de Servicio Comunitario Patrimonio y Memoria Educativa desde la perspectiva de trabajo teórico y metodológico, con la finalidad de recuperar, reconstruir e interpretar las ideas y prácticas en torno a la educación como asunto escolar y social, con el objeto que las comunidades en general y las comunidades educativas en particular se reconozcan en su proceso constitutivo de acción formativa. En este sentido, los estudiantes que participan de estos proyectos tienen la oportunidad de insertarse en actividades de servicio comunitario ancladas en la investigación e investigación - acción del proceso educativo en su perspectiva histórica y a nivel local. Esta actividad de Servicio Comunitario es extensión de lo que hemos venido desarrollando desde diversos Centros Regionales de la Escuela de Educación: y desde la línea de investigación Memoria Educativa Venezolana en interacción con el Archivo General de la Nación. Como resultado del servicio, además de fortalecer las competencias pedagógicas del estudiante, se han desarrollado talleres, conferencias sobre los resultados de tema y se han dispuesto herramientas para el trabajo del patrimonio y la memoria educativa a nivel local.

Eruptions and superhumps in dwarf novae

International Nuclear Information System (INIS)

Patterson, J.

1979-01-01

The existence of two distinct eruption types in dwarf novae is considered. A small subclass of dwarf novae, the SU Ursae Majoris stars, show occasional very bright and long eruptions (''supermaxima''), and during supermaxima, large-amplitude photometric variations (''superhumps'') at a period related to the orbital period are seen. Two new stars showing these effects, AY Lyrae and YZ Cancri, are reported. A third star, WZ Sagittae, is probably also a member of the class. Models for the superhumps are reviewed and found to be unsatisfactory. Observational constraints on a successful model are discussed

Spectral evolution of dwarf nova outbursts

International Nuclear Information System (INIS)

Cannizzo, J.K.; Kenyon, S.J.

1987-01-01

The disk instability model for dwarf nova eruptions is investigated by computing the spectral development of the accretion disk through a complete limit cycle. Observed stellar spectra are used to model the radiation emitted by optically thick annuli within the disc. The general findings agree with those of Smak (1984) and Pringle et al. (1986). It is suggested that the dwarf nova oscillations might be a source of information concerning the evolution of the inner disk and that detailed observations of this phenomenon can be used to test various outburst mechanisms. 74 references

Os sentidos construídos na atenção à crise no território: o Centro de Atenção Psicossocial como protagonista

Directory of Open Access Journals (Sweden)

Janaina Quinzen Willrich

2013-06-01

Full Text Available A atenção à crise é um ponto estratégico no processo de mudanças paradigmáticas propostas pela Reforma Psiquiátrica brasileira, exigindo que serviços substitutivos e profissionais utilizem novas tecnologias de cuidado. Este estudo objetiva identificar as ações de atenção à crise no território e os sentidos que as envolvem, partindo das práticas discursivas dos profissionais. Trata-se de um estudo qualitativo que utiliza a perspectiva teórica do Construcionismo Social. No banco de dados da pesquisa Avaliação dos Centros de Atenção Psicossocial da Região Sul do Brasil (CAPSUL, foram analisados 27 entrevistas realizadas com profissionais do Centro de Atenção Psicossocial de Alegrete e três diários de campo com registro de 390 horas de observação. Os resultados evidenciaram o acolhimento e a responsabilização pelo cuidado. Conclui-se que liberdade, reciprocidade, contratualidade e responsabilização pelo cuidado são os novos sentidos necessários aos serviços substitutivos para superação do manicômio e dos sentidos de exclusão e periculosidade.

Spectroscopy of poorly known northern dwarf novae. Part. I

International Nuclear Information System (INIS)

Bruch, A.

1989-01-01

Spectroscopic observations of 12 dwarf novae are presented most of which hitherto unknown spectroscopically. The classifications as dwarf novae could be confirmed in most cases. Two objects remain doubtful: CI UMa and MR Per. The latter has the spectrum of a very late type main sequence star with hydrogen emissions and might be a flare star showing extremely slow flares, while the CI UMa spectrum does not contain any emission line above the noise level. In two dwarf novae - DX And and NS Per - absorption lines of the secondary star are newly detected

A evolução da indústria de energia elétrica e a estratégia do grupo Iberdrola no Brasil

OpenAIRE

Santos, Gervásio Ferreira dos

2003-01-01

A nova possibilidade de competição em segmentos que eram tradicionalmente monopólios tem motivado comportamentos mais dinâmicos das empresas de energia elétrica, que transformam as incertezas e riscos em oportunidades de mercado.

CIRCUMSTELLAR SHELL FORMATION IN SYMBIOTIC RECURRENT NOVAE

Energy Technology Data Exchange (ETDEWEB)

Moore, Kevin; Bildsten, Lars [Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93106 (United States)

2012-12-20

We present models of spherically symmetric recurrent nova shells interacting with circumstellar material (CSM) in a symbiotic system composed of a red giant (RG) expelling a wind and a white dwarf accreting from this material. Recurrent nova eruptions periodically eject material at high velocities ({approx}> 10{sup 3} km s{sup -1}) into the RG wind profile, creating a decelerating shock wave as CSM is swept up. High CSM densities cause the shocked wind and ejecta to have very short cooling times of days to weeks. Thus, the late-time evolution of the shell is determined by momentum conservation instead of energy conservation. We compute and show evolutionary tracks of shell deceleration, as well as post-shock structure. After sweeping up all the RG wind, the shell coasts at a velocity {approx}100 km s{sup -1}, depending on system parameters. These velocities are similar to those measured in blueshifted CSM from the symbiotic nova RS Oph, as well as a few Type Ia supernovae that show evidence of CSM, such as 2006X, 2007le, and PTF 11kx. Supernovae occurring in such systems may not show CSM interaction until the inner nova shell gets hit by the supernova ejecta, days to months after the explosion.

ALERTA EMPRENDEDORA Y CONOCIMIENTO PREVIO PARA LA IDENTIFICACIÓN DE OPORTUNIDADES EMPRENDEDORAS: EL PAPEL MODERADOR DE LAS REDES SOCIALES

OpenAIRE

Ruiz-Arroyo, Matilde; Sanz-Espinosa, Ignacio; Fuentes-Fuentes, María del Mar

2015-01-01

Este estudio contribuye a la investigación sobre la identificación de oportunidades emprendedoras, analizando el efecto moderador que el tama˜no y la fortaleza de la red de contactos del emprendedor ejercen en la relación de influencia del conocimiento previo y la alerta emprendedora sobre la identificación de oportunidades. Los resultados del análisis de regresión lineal sobre una muestra de 199 emprendedores de Andalucía muestran una influencia negativa del conocimiento previo sobre el núme...

Rate of nova production in the Galaxy

International Nuclear Information System (INIS)

Liller, W.; Mayer, B.; PROBLICOM Sky Survey, Los Angeles, CA)

1987-01-01

The ongoing PROBLICOM program in the Southern Hemisphere now makes it possible to derive a reliable value for the overall production rate of Galactic novae. The results, 73 + or - 24/y, indicates that the Galaxy outproduces M 31 by a factor of two or three. It is estimated that the rate of supernova ejecta is one and a half orders of magnitude greater than that of novae in the Galaxy. 15 references

REQUALIFICAÇÃO URBANA E DESPEJOS EM CENTROS NOVO E ANTIGO DE SALVADOR

Directory of Open Access Journals (Sweden)

John Gledhill

Full Text Available A cidade de Salvador replica o processo de “acumulação por espoliação”, característico de um urbanismo neoliberal em todo o mundo. Neste artigo, comparamos como atua a lógica da requalificação urbana em duas zonas da cidade. A primeira é uma grande e historicamente combativa favela localizada na região que tem se tornado o mais moderno “novo centro” da cidade. Nela, a chave dos problemas são os novos projetos de mobilidade urbana e a construção de condomínios para outras classes sociais. A segunda zona é o centro colonial da cidade, que experimenta uma nova fase de gentrificação. Ali, as políticas de patrimônio histórico se encontram com outras políticas, transformando os remanescentes espaços públicos da cidade neoliberal securitizada em zonas mais seguras para turistas e residentes mais ricos. Enfatizamos o valor de um entendimento etnograficamente fundamentado para compreender o que essas mudanças significam para moradores pobres da cidade, assim como a complexidade, a heterogeneidade e a ambiguidade de suas diferentes reações.

Results of Statewide TerraNova Testing, Fall 1998.

Science.gov (United States)

La Marca, Paul M.

This summary provides key findings about state, district, and school level performance on the TerraNova examinations (CTB/McGraw Hill) in Nevada in 1998-1999. The TerraNova tests are used to assess students in grades 4, 8, and 10 as stipulated by Nevada law. Within this summary, a description of performance as measured by national percentile…

The Distance to Nova V959 Mon from VLA Imaging

Science.gov (United States)

Linford, J. D.; Ribeiro, V. A. R. M.; Chomiuk, L.; Nelson, T.; Sokoloski, J. L.; Rupen, M. P.; Mukai, K.; O'Brien, T. J.; Mioduszewski, A. J.; Weston, J.

2015-06-01

Determining reliable distances to classical novae is a challenging but crucial step in deriving their ejected masses and explosion energetics. Here we combine radio expansion measurements from the Karl G. Jansky Very Large Array with velocities derived from optical spectra to estimate an expansion parallax for nova V959 Mon, the first nova discovered through its γ-ray emission. We spatially resolve the nova at frequencies of 4.5-36.5 GHz in nine different imaging epochs. The first five epochs cover the expansion of the ejecta from 2012 October to 2013 January, while the final four epochs span 2014 February-May. These observations correspond to days 126 through 199 and days 615 through 703 after the first detection of the nova. The images clearly show a non-spherical ejecta geometry. Utilizing ejecta velocities derived from three-dimensional modeling of optical spectroscopy, the radio expansion implies a distance between 0.9 ± 0.2 and 2.2 ± 0.4 kpc, with a most probable distance of 1.4 ± 0.4 kpc. This distance implies a γ-ray luminosity of 0.6× {{10}35} erg s-1, which is much less than the prototype γ-ray-detected nova, V407 Cyg, possibly due to the lack of a red giant companion in the V959 Mon system. V959 Mon also has a much lower γ-ray luminosity than other classical novae detected in γ-rays to date, indicating a range of at least a factor of 10 in the γ-ray luminosities for these explosions.

The Precambrian/Lower Cambrian pluton from Vila Nova (Central Portugal

Directory of Open Access Journals (Sweden)

Reis, A. I.M.

2010-06-01

Full Text Available The Vila Nova pluton is a small, Pre-Variscan granitic body that intruded rocks of the Central Iberian Zone near the contact with the Ossa Morena Zone and is affected by several shear zones and faults. Its contact metamorphic aureole is constituted by micaschist with porphyroblasts in the outer zone and hornfels in the inner zone. Small metasedimentar xenoliths are dispersed all over the body. The pluton has a great mineralogical heterogeneity with pronounced variations in muscovite/biotite and plagioclase/microcline contents and is classified as granite, granodiorite or tonalite. It is a leucogranite, highly peraluminous (A/CNK = 1.31 – 1.64, magnesian and calc-alkaline to alkaline-calcic. The variation diagrams show curvilinear trends with silica. Eu/Eu* = 0.47 – 0.77 and there is a slight enrichment in LREE relative to HREE. The normalized diagrams indicated dominantly crustal granite, related to subduction. U-Pb isotopic data of zircon and monazite gives 540-542 Ma age.

El plutón de Vila Nova es un pequeño cuerpo granítico pre-varisco, que intruyó en las rocas de la Zona Centro Ibérica, cerca del contacto con la Zona de Ossa Morena, siendo afectado por varias fallas y zonas de cizalla. Su aureola de metamorfismo de contacto consiste en esquistos con porfiroblastos y corneanas. Pequeños xenolitos metasedimentarios aparecen dispersos por todo el cuerpo granítico. Presenta una gran diversidad mineralógica, con amplias variaciones en las relaciones biotita/moscovita y microclina/plagioclasa, siendo clasificado como tonalita-granodiorita-granito. Se trata de un leucogranito fuertemente peralumínico (A/CNK = 1.31 – 1.64, magnesiano y calco-alcalino a alcalino-cálcico. Los diagramas muestran variaciones curvilíneas con la variación de sílice. Eu/Eu* = 0.47 – 0.77 y hay un ligero enriquecimiento de LREE en relación con HREE. Los diagramas indican que la norma es un granito dominante de la corteza, relacionados con la

A Recurrent Nova Super-Remnant in the Andromeda Galaxy

DEFF Research Database (Denmark)

Darnley, M. J.; Hounsell, R.; O'Brien, T. J.

2017-01-01

Here we report that the most rapidly recurring nova, M31N 2008-12a, which erupts annually, is surrounded by a "nova super-remnant" which demonstrates that M31N 2008-12a has erupted with high frequency for millions of years....

NOVAS TECNOLOGIAS NO ENVELHECIMENTO

Directory of Open Access Journals (Sweden)

Rosa Maria Farah

2010-02-01

Full Text Available O Programa de Estudos Pós-Graduados em Gerontologia/PUC-SP desenvolve pesquisas em diversificadas linhas algumas das quais têm em comum o acolhimento à questão das novas tecnologias no envelhecimento. São investigações de caráter interdisciplinar que envolvem docentes-pesquisadores, orientandos de mestrado e de iniciação científica. Na área da educação a distância, a PUC-SP inaugura um trabalho em que o idoso interessado em avançar em seus conhecimentos é recebido em um ambiente virtual de aprendizagem, em que pode participar de cursos avançados de aquisição de novas linguagens e de navegação na Internet, cujas consequências são o investimento em uma via mais digna para o envelhecer no sentido de esse idoso sentir-se um ser ligado aos novos tempos em que a interatividade digital traz-lhe possibilidades ilimitadas de contatos com o outro, com o mundo enfim. A pesquisa sobre a inclusão cibersocial do idoso mostra o que significa colocar o idoso em contato com a Internet, quando este recebe, por meio das redes sociais, ofertas de várias ordens, e equipamentos que contornam limitações de ordem física ou motora. Além disso, o registro digital da memória do idoso, de sua história e referências também podem constituir conteudos preciosos para pesquisas. A relação do idoso com a informática pode situá-lo como um ator, produtor e reprodutor no ciberespaço. Isso significa que as vantagens do uso do computador fazem o idoso ganhar novo sentido na vida, na medida em que pode assim preencher o vazio causado pelas perdas que lhe vão ocorrendo, possibilitando que ele redimensione seu olhar para o presente e futuro. Palavras-chave: o sujeito-idoso nas novas tecnologias; novas tecnologias e envelhecimento; o idoso na educação a distância; internet na velhice.

Gamma-ray emission from internal shocks in novae

Science.gov (United States)

Martin, P.; Dubus, G.; Jean, P.; Tatischeff, V.; Dosne, C.

2018-04-01

Context. Gamma-ray emission at energies ≥100 MeV has been detected from nine novae using the Fermi Large Area Telescope (LAT), and can be explained by particle acceleration at shocks in these systems. Eight out of these nine objects are classical novae in which interaction of the ejecta with a tenuous circumbinary material is not expected to generate detectable gamma-ray emission. Aim. We examine whether particle acceleration at internal shocks can account for the gamma-ray emission from these novae. The shocks result from the interaction of a fast wind radiatively-driven by nuclear burning on the white dwarf with material ejected in the initial runaway stage of the nova outburst. Methods: We present a one-dimensional model for the dynamics of a forward and reverse shock system in a nova ejecta, and for the associated time-dependent particle acceleration and high-energy gamma-ray emission. Non-thermal proton and electron spectra are calculated by solving a time-dependent transport equation for particle injection, acceleration, losses, and escape from the shock region. The predicted emission is compared to LAT observations of V407 Cyg, V1324 Sco, V959 Mon, V339 Del, V1369 Cen, and V5668 Sgr. Results: The ≥100 MeV gamma-ray emission arises predominantly from particles accelerated up to 100 GeV at the reverse shock and undergoing hadronic interactions in the dense cooling layer downstream of the shock. The emission rises within days after the onset of the wind, quickly reaches a maximum, and its subsequent decrease reflects mostly the time evolution of the wind properties. Comparison to gamma-ray data points to a typical scenario where an ejecta of mass 10-5-10-4 M⊙ expands in a homologous way with a maximum velocity of 1000-2000 km s-1, followed within a day by a wind with a velocity values of which result in the majority of best-fit models having gamma-ray spectra with a high-energy turnover below 10 GeV. Our typical model is able to account for the main

What does an erupting nova do to its red dwarf companion?

International Nuclear Information System (INIS)

Kovetz, A.; Prialnik, D.; Shara, M.M.

1988-01-01

During nova eruptions and for decades afterward, the red dwards in cataclysmic binaries are irradiated with hundreds of times more luminosity than they themselves produce. Simulations of the time-dependent irradiation of three red dwarf models (0.25, 0.50, and 0.75 solar mass) are presented. The mass transfer rates forced by irradiation after nova eruption are found to be enhanced by two orders of magnitude because of the irradiation. The time scale for irradiation to become unimportant is that of the white dwarf cooling time scale, a few centuries. These two results support the hibernation scenario of novae, which suggests that novae remain bright for a few centuries after eruption because of irradiation-induced mass transfer. After irradiation decreases mass transfer slows, and some very old novae may then become extremely faint. 26 references

El riesgo como oportunidad

Directory of Open Access Journals (Sweden)

Daniela Gargantini

2003-01-01

Full Text Available Durante los últimos años el crecimiento mundial de catástrofes naturales ha ido en franco aumento. Sin embargo, desde un enfoque sistémico puede verificarse que la gran mayoría de los desastres se origina en los países en desarrollo (entre ellos los latinoamericanos, siendo las pérdidas en ellos significativamente más altas que en los países industrializados. Bajo esta postura los desastres no son sólo naturales sino socio- naturales, enfatizando la estrecha relación de causalidad entre modelos de desarrollo y urbanización y procesos de generación de riesgos, al incrementar la vulnerabilidad de los sectores más desprotegidos. El desastre pone en evidencia así una situación (la pobreza y segregación urbana ya existente, pero no considerada hasta el momento de la catástrofe. Frente a este panorama el desastre aparece como oportunidad que precipita tres catalizadores de políticas habitacionales: tierra, asistencia técnica y financiamiento, incrementando la celeridad y la creatividad de las respuestas. El interrogante que surge es por qué esperar el desastre para ponerlos en marcha, cuando ninguno de ellos es estrictamente dependiente de la situación de riesgo, sino sujeto de luchas de poder.

Near-infrared and optical studies of the highly obscured nova V1831 Aquilae (Nova Aquilae 2015)

Science.gov (United States)

Banerjee, D. P. K.; Srivastava, Mudit K.; Ashok, N. M.; Munari, U.; Hambsch, F.-J.; Righetti, G. L.; Maitan, A.

2018-01-01

Near-infrared (NIR) and optical photometry and spectroscopy are presented for the nova V1831 Aquilae, covering the early decline and dust-forming phases during the first ∼90 d after its discovery. The nova is highly reddened due to interstellar extinction. Based solely on the nature of the NIR spectrum, we are able to classify the nova to be of the Fe II class. The distance and extinction to the nova are estimated to be 6.1 ± 0.5 kpc and Av ∼ 9.02, respectively. Lower limits of the electron density, emission measure and ionized ejecta mass are made from a Case B analysis of the NIR Brackett lines, while the neutral gas mass is estimated from the optical [O I] lines. We discuss the cause of the rapid strengthening of the He I 1.0830-μm line during the early stages. V1831 Aql formed a modest amount of dust fairly early (∼19.2 d after discovery); the dust shell is not seen to be optically thick. Estimates of the dust temperature, dust mass and grain size are made. Dust formation commences around day 19.2 at a condensation temperature of 1461 ± 15 K, suggestive of a carbon composition, following which the temperature is seen to decrease gradually to 950 K. The dust mass shows a rapid initial increase, which we interpret as being due to an increase in the number of grains, followed by a period of constancy, suggesting the absence of grain destruction processes during this latter time. A discussion of the evolution of these parameters is made, including certain peculiarities seen in the grain radius evolution.

Oportunidades perdidas de atención en salud en instituciones prestadoras de servicios de salud Sincelejo, 2003

Directory of Open Access Journals (Sweden)

Gloria Villarreal Amaris

2005-04-01

Full Text Available Antecedentes: la nueva legislación en salud de Colombia, que parte de los principio de aseguramiento y solidaridad, plantea una ampliación de la cobertura y una mejor calidad de la atención en salud. Material y métodos: se realizó un estudio exploratorio, transversal y de contactos múltiples, mediante el cual se determinó el índice de oportunidades perdidas de atención en salud, sus posibles causas y el grado de satisfacción, en las diferentes instituciones municipales prestadoras de servicios de salud, de Sincelejo. También se realizó una observación participativa y verificación de registros de consultas en períodos posteriores a la realización de la entrevista, con el propósito de establecer la estabilidad o cambios en el fenómeno analizado. Resultados: se puso de manifiesto una oferta institucional de atención en salud menor que la demanda y una alta proporción de oportunidades perdidas de atención en salud y un baja satisfacción, relacionadas con factores institucionales. Conclusiones: se requieren acciones que mejoren la oportunidad de la atención en salud en la entidades municipales de Sincelejo.

Late-type components of slow novae and symbiotic stars

Energy Technology Data Exchange (ETDEWEB)

Allen, D A [Anglo-Australian Observatory, Epping (Australia); Royal Observatory, Edinburgh (UK))

1980-08-01

It is argued that the various types of symbiotic stars and the slow novae are the same phenomena exhibiting a range of associated time-scales, the slow novae being of intermediate speed. Evidence is summarized showing that both types of object contain normal M giants or mira variables. This fact is at odds with currently fashionable single-star models for slow novae, according to which the M star is totally disrupted before the outburst. Spectral types of the late-type components are presented for nearly 80 symbiotic stars and slow novae, derived from 2 ..mu..m spectroscopy. It is found that both the intensity of the emission spectrum and the electron density of the gas are functions of the spectral type of the late-type star. Explanations for these correlations are given. On the assumption that the late-type components are normal giants, spectroscopic parallaxes are determined; credible distances are derived which indicate that the known symbiotic stars have been sampled as far afield as the Galactic Centre. Hydrogen shell flashes on a white dwarf accreting gas from the late-type components offer an attractive explanation of the phenomena of slow novae and symbiotic stars, and such models are discussed in the concluding section.

¿Cómo identifican las oportunidades de negocio los emprendedores? Una aproximación descriptiva al caso andaluz

Directory of Open Access Journals (Sweden)

Ruiz Arroyo, Matilde

2009-06-01

Full Text Available Este trabajo pretende contribuir al estudio de los factores y características que influyen en el proceso emprendedor, concretamente en la fase de identificación de oportunidades emprendedoras, previa a las de evaluación y explotación. En el estudio se ha analizado una muestra de 241 empresarios andaluces que han puesto en marcha una o más oportunidades. Mediante un análisis descriptivo se determinan el papel que juegan en el descubrimiento de oportunidades los factores relativos a las características del emprendedor y motivaciones, su capital humano, con especial atención al conocimiento previo, así como las principales fuentes para su identificación.The purpose of this paper is to contribute to the study of the factors and characteristics that may influence the entrepreneurial process, focusing specifically on the identification of entrepreneurial opportunities. Our study analyzes a sample of 241 Andalusian entrepreneurs that have driven one or several entrepreneurial opportunities. The results of the descriptive analysis show the role that entrepreneur’s characteristics, motivation, human capital (specially prior knowledge, and the sources for opportunity identification play in the discovery of new opportunities.

Canada-Nova Scotia Offshore Petroleum Board annual report, 1992-1993

International Nuclear Information System (INIS)

1993-06-01

The Canada-Nova Scotia Offshore Petroleum Board was established as the agency responsible for the regulation of the hydrocarbon resources in the Nova Scotia offshore. The Board evaluates resource potential, administers petroleum exploration and production rights, approves offshore activities, and approves benefits and development plans. The main activities of the Board in 1992-1993 are summarized and financial statements are presented. Highlights include production of 572,300 m 3 of oil during the first production season of LASMO Nova Scotia Ltd.'s Cohasset development, the first commercial offshore oil production for Canada; four major resource evaluation projects in the Glenelg Field, the Laurentian sub-basin, the Fundy Rift Basin, and the Panuke Field; holding of discussions between Nova Scotia, Newfoundland, and Canada on the maritime boundary lines between respective offshore petroleum board jurisdictions, in the wake of a June 1992 determination of the disputed maritime boundary around St. Pierre et Miquelon; and amendments of certain safety-related legislation applicable to offshore operations. Employment benefits of the Cohasset project during 1992 totalled ca 470 Nova Scotians and 120 other Canadians. 3 tabs

X-ray novae - what are they

International Nuclear Information System (INIS)

Wennfors, B.

1976-01-01

Ten of the two hundred cosmic X-ray sources exhibit characteristics in their emissions analogous to novae, i.e. after a rapid increase in luminosity, lasting about three days, follows a period of about a month with a slow decrease, and thereafter a rapid decrease to invisibility. The spectra of such sources are discussed in general terms and brief descriptions are given of the five which have been identified with optical objects. Three models for the history of X-ray novae, all based on X-ray emission from a compact object in an orbit very near a larger star, are discussed. (JIW)

Observations and simulations of recurrent novae: U Sco and V394 CrA

Science.gov (United States)

Starrfield, S.; Sonneborn, G.; Sparks, Warren M.; Shaviv, G.; Williams, R. E.; Heathcote, S.; Ferland, Gary; Gehrz, Robert D.; Ney, Edward P.; Kenyon, Scott

1988-01-01

Observations and analysis of the Aug. 1987 outburst of the recurrent nova V394 CrA are presented. This nova is extremely fast and its outburst characteristics closely resemble those of the recurrent nova U Sco. Hydrodynamic simulations of the outbursts of recurrent novae were performed. Results as applied to the outbursts of V394 CrA and U Sco are summarized.

THE INTER-ERUPTION TIMESCALE OF CLASSICAL NOVAE FROM EXPANSION OF THE Z CAMELOPARDALIS SHELL

International Nuclear Information System (INIS)

Shara, Michael M.; Mizusawa, Trisha; Zurek, David; Martin, Christopher D.; Neill, James D.; Seibert, Mark

2012-01-01

The dwarf nova Z Camelopardalis is surrounded by the largest known classical nova shell. This shell demonstrates that at least some dwarf novae must have undergone classical nova eruptions in the past, and that at least some classical novae become dwarf novae long after their nova thermonuclear outbursts. The current size of the shell, its known distance, and the largest observed nova ejection velocity set a lower limit to the time since Z Cam's last outburst of 220 years. The radius of the brightest part of Z Cam's shell is currently ∼880 arcsec. No expansion of the radius of the brightest part of the ejecta was detected, with an upper limit of ≤0.17 arcsec yr –1 . This suggests that the last Z Cam eruption occurred ≥5000 years ago. However, including the important effect of deceleration as the ejecta sweeps up interstellar matter in its snowplow phase reduces the lower limit to 1300 years. This is the first strong test of the prediction of nova thermonuclear runaway theory that the interoutburst times of classical novae are longer than 1000 years. The intriguing suggestion that Z Cam was a bright nova, recorded by Chinese imperial astrologers in October-November 77 B.C.E., is consistent with our measurements. If Z Cam was indeed the nova of 77 B.C.E. we predict that its ejecta are currently expanding at 85 km s –1 , or 0.11 arcsec yr –1 . Detection and measurement of this rate of expansion should be possible in just a few years.

El centro del mundo para los gallegos

OpenAIRE

Mandianes Castro, Manuel

1982-01-01

Estudio sobre la noción de espacio en Galicia. Se pretende demostrar que para los gallegos el universo tiene un centro, con diferentes niveles de aprehensión, alrededor del cual se organiza la comunidad. Para este trabajo se han realizado encuestas entre los habitantes de la región de la Limia (Orense) y los de Loureses. El trabajo se divide en tres apartados atendiendo a los distintos niveles de percepción del centro del mundo: "lareira" (hogar), "encrucillada" (encrucijada) y cementerio.

Bibliotecas accesibles: Centro de Documentación del Instituto Latinoamericano de Naciones Unidas para la Prevención del Delito y Tratamiento del Delincuente (ILANUD

Directory of Open Access Journals (Sweden)

Grethel Lépiz Ureña

2013-01-01

Full Text Available Estudio cuyo objetivo general fue realizar un diagnóstico sobre los servicios y productos de información disponibles en el Centro de Documentación (CEDO del Instituto Latinoamericano de Naciones Unidas para la Prevención del Delito y Tratamiento del Delincuente (ILANUD con respecto a las normas y estándares internacionales ratificados en Costa Rica, y a la Ley 7600 de Igualdad de Oportunidades para las Personas con Discapacidad y su Reglamento, en materia de accesibilidad en bibliotecas. El objetivo fue desarrollar una propuesta de accesibilidad global en el CEDO de ILANUD, a partir del diagnóstico derivado de instrumentos utilizados en tres áreas de trabajo (plataforma web, infraestructura física y servicios y productos de información fundamentada en aquellos aspectos que requieren un cambio orientado hacia la accesibilidad, en el intento por brindar a la comunidad de usuarios con discapacidad física y sensorial, un acceso rápido y oportuno a la información, ya sea en forma presencial o virtual.

THE DUSTY NOVA V1065 CENTAURI (NOVA CEN 2007): A SPECTROSCOPIC ANALYSIS OF ABUNDANCES AND DUST PROPERTIES

International Nuclear Information System (INIS)

Helton, L. Andrew; Woodward, Charles E.; Gehrz, Robert D.; Walter, Frederick M.; Vanlandingham, Karen; Schwarz, Greg J.; Evans, Aneurin; Ness, Jan-Uwe; Geballe, Thomas R.; Greenhouse, Matthew; Krautter, Joachim; Liller, William; Lynch, David K.; Rudy, Richard J.; Shore, Steven N.; Starrfield, Sumner; Truran, Jim

2010-01-01

We examine the ejecta evolution of the classical nova V1065 Centauri, constructing a detailed picture of the system based on spectrophotometric observations obtained from 9 to approximately 900 days post-outburst with extensive coverage from optical to mid-infrared wavelengths. We estimate a reddening toward the system of E(B-V) = 0.5 ± 0.1, based upon the B - V color and analysis of the Balmer decrement, and derive a distance estimate of 8.7 +2.8 -2.1 kpc. The optical spectral evolution is classified as P o fe N ne A o according to the CTIO Nova Classification system of Williams et al. Photoionization modeling yields absolute abundance values by number, relative to solar of He/H = 1.6 ± 0.3, N/H = 144 ± 34, O/H = 58 ± 18, and Ne/H = 316 ± 58 for the ejecta. We derive an ejected gas mass of M g = (1.6 ± 0.2) x 10 -4 M sun . The infrared excess at late epochs in the evolution of the nova arises from dust condensed in the ejecta composed primarily of silicate grains. We estimate a total dust mass, M d , of order (0.2-3.7) x 10 -7 M sun , inferred from modeling the spectral energy distribution observed with the Spitzer IRS and Gemini-South GNIRS spectrometers. Based on the speed class, neon abundance, and the predominance of silicate dust, we classify V1065 Cen as an ONe-type classical nova.

Policy statement on gas distribution in Nova Scotia

Energy Technology Data Exchange (ETDEWEB)

NONE

2002-01-30

This paper presented Nova Scotia's policy related to gas distribution. The government of Nova Scotia views natural gas as an economic enabler and is committed to ensuring that natural gas is available and accessible to Nova Scotians where it is economically feasible. Natural gas will give the province an efficient and clean burning energy supply that will make existing businesses more competitive. The province will support and facilitate the construction and operation of a gas distribution system by the private sector and will ensure that there is regulatory oversight by the Nova Scotia Utility and Review Board to protect the public interest. The government will also develop a plan for early conversion of government buildings to natural gas. This paper described the province's policy on gas distribution in relation to: (1) a province-wide franchise, (2) a supplemental franchise, (3) cost of service/performance based rates, (4) postage stamp rates, (5) a Maritimes and Northeast lateral policy, (6) direct access/bypass, (7) existing direct access user, (8) bundling of gas sales and other products and services, (9) licensing of gas marketers, (10) benefits, (11), regulatory efficiency, (12) municipal taxes, and (13) municipal operating agreements.

V2487 Oph 1998: a post nova in an intermediate polar

Directory of Open Access Journals (Sweden)

Hernanz Margarita

2014-01-01

Full Text Available V2487 Oph (Nova Oph 1998 is a classical nova that exploded in 1998. XMM-Newton observations performed between 2 and 9 years after the explosion showed emission related to restablished accretion, and indicative of a magnetic white dwarf. The spectrum looks like that of a cataclysmic variable of the intermediate polar type. Anyway, we don’t have yet a definitive confirmation of the intermediate polar character, through determination of spin and orbital periods. Although it is not the first nova exploding in a magnetic white dwarf, it is always challenging to reach explosive conditions when a standard accretion disk can’t be formed, because of the magnetic field. In addition, V2487 Oph has been the first nova where a detection of X-rays - in the host binary system – has been reported prior to its eruption, in 1990 with the ROSAT satellite. V2487 Oph has been also detected in hard X-rays with INTEGRAL/IBIS and RXTE/PCA. Last but not least, V2487 Oph has been identified as a recurrent nova in 2008, since a prior eruption in 1900 has been reported through analysis of Harvard photographic plates. Therefore, it is expected to host a massive white dwarf and be a candidate for a type Ia supernova explosion. In a recent study of the progenitors of galactic novae, it has been emphasized that V2487 Oph is an important and interesting object, "intermediate" between the "standard" classical novae and other historical and well-known recurrent novae with shorter recurrence periods. It could be that in the end there’s a continuous distribution of recurrence periods, instead of the common understanding up to now that "classical" and "recurrent" novae were quite apart (with recurrence periods of more than 104 years and less than 100years - approximately - respectively. We present the results of our campaign of several observations with XMM-Newton. The consequences for the understanding of such a puzzling object are discussed.

Constraining Calcium Production in Novae

Science.gov (United States)

Tiwari, Pranjal; C. Fry, C. Wrede Team; A. Chen, J. Liang Collaboration; S. Bishop, T. Faestermann, D. Seiler Collaboration; R. Hertenberger, H. Wirth Collaboration

2017-09-01

Calcium is an element that can be produced by thermonuclear reactions in the hottest classical novae. There are discrepancies between the abundance of Calcium observed in novae and expectations based on astrophysical models. Unbound states 1 MeV above the proton threshold affect the production of Calcium in nova models because they act as resonances in the 38 K(p , γ) 39 Ca reaction present. This work describes an experiment to measure the energies of the excited states of 39 Ca . We will bombard a thin target of 40 Ca with a beam of 22 MeV deuterons, resulting in tritons and 39Ca. We will use a Q3D magnetic spectrograph from the MLL in Garching, Germany to momenta analyze the tritons to observe the excitation energies of the resulting 39 Ca states. Simulations have been run to determine the optimal spectrograph settings. We decided to use a chemically stable target composed of CaF2 , doing so resulted in an extra contaminant, Fluorine, which is dealt with by measuring the background from a LiF target. These simulations have led to settings and targets that will result in the observation of the 39 Ca states of interest with minimal interference from contaminants. Preliminary results from this experiment will be presented. National Sciences and Engineering Research Council of Canada and U.S. National Science Foundation.

A deep optical imaging study of the nebular remnants of classical novae

Science.gov (United States)

Slavin, A. J.; O'Brien, T. J.; Dunlop, J. S.

1995-09-01

An optical imaging study of old nova remnants has revealed previously unobserved features in the shells of 13 classical novae - DQ Her, FH Ser, HR Del, GK Per, V1500 Cyg, T Aur, V533 Her, NQ Vul, V476 Cyg, DK Lac, LV Vul, RW UMi and V450 Cyg. These data indicate a possible correlation between nova speed class and the ellipticity of the resulting remnants - those of faster novae tend to comprise randomly distributed clumps of ejecta superposed on spherically symmetric diffuse material, whilst slower novae produce more structured ellipsoidal remnants with at least one and sometimes several rings of enhanced emission. By measuring the extent of the resolved shells and combining this information with previously published ejection speeds, we use expansion parallax to estimate distances for the 13 novae. Whilst we are able to deduce new information about every nova, it is notable that these observations include the first detections of shells around the old novae V450 Cyg and NQ Vul, and that velocity-resolved images of FH Ser and DQ Her have enabled us to estimate their orbital inclinations. Our observations of DQ Her also show that the main ellipsoidal shell is constricted by three rings and surrounded by a faint halo; this halo contains long tails extending outwards from bright knots, perhaps indicating that during or after outburst a fast inner wind has broken through the fractured principal shell.

Tão perto de casa, tão longe de nós: etnografia das novas margens no centro da urbe

Science.gov (United States)

Fernandes, Por Luís

2011-01-01

Philippe Bourgois é, desde 2007, “Richard Perry University professor” no Departamento de Antropologia e de Medicina Familiar e de Práticas Comunitárias na Universidade da Pensilvânia. Esteve durante largos anos ligado ao Departamento de Antropologia, História e Medicina Social da Universidade da Califórnia, São Francisco. A publicação, em 1995, de In Search of Respect: Selling Crack in El Barrio1 projectaria o seu nome muito para além dos Estados Unidos: uma etnografia no coração porto-riquenho do Harlem, em torno dos actores e dos ambientes da venda de crack. Seguir-se-ia um longo trabalho de terreno em acampamentos de dependentes de heroína em São Francisco, orientando o seu trabalho para as formas mais radicais da pobreza e da marginalidade nos EUA. É deste trabalho de terreno que sai o seu último livro, Righteous Dopefiend2. Em Junho de 2007 esteve em Lisboa para participar na 3.a edição do “Ethnografeast”. Foi então que aproveitámos a oportunidade para ouvir um percurso invulgar contado pelo próprio: uma longa conversa no Hotel Zurique, cujo nome só vem ao caso por evocar o país onde passou uma parte da infância. PMID:22013286

MENINO, GURI OU PIÁ? UM ESTUDO DIATÓPICO NAS REGIÕES CENTRO-OESTE, SUDESTE E SUL A PARTIR DOS DADOS DO PROJETO ATLAS LINGUÍSTICO DO BRASIL

Directory of Open Access Journals (Sweden)

Valter Pereira ROMANO

2014-12-01

Full Text Available Este trabalho utiliza como corpus de análise os dados coletados pela equipe do Projeto Atlas Linguístico do Brasil em três regiões: Centro-Oeste, Sudeste e Sul. Os dados referem-se às cidades do interior e às capitais de cada estado, coletados junto a informantes selecionados segundo o perfil estabelecido. Nesta oportunidade, objetiva-se discutir a distribuição diatópica das variantes lexicais para a questão 132 - "Criança pequenininha, a gente diz que é bebê. E quando ela tem de 5 a 10 anos, do sexo masculino?" - do Questionário Semântico-Lexical (COMITÊ NACIONAL DO PROJETO ALIB, 2001. A metodologia utilizada envolveu análises descritivas e inferenciais pertinentes ao estudo. Para tanto, oito hipóteses foram testadas no sentido de averiguar o comportamento e a distribuição diatópica das cinco variantes mais produtivas no conjunto de respostas. Os principais resultados observados indicam que as variantes apresentam comportamento distinto nas três regiões: (i a variante "menino" apresenta distribuição homogênea nos dez estados; (ii as formas lexicais "guri" e "piá" possuem distribuição heterogênea na região Sul; (iii as variantes de etimologia indígena ("guri" e "piá" são mais representativas nas regiões Sul e Centro-Oeste; (iv há uma maior representatividade da variante "moleque" (étimo africano na região Sudeste, principalmente em São Paulo e Minas Gerais.

Nova Upgrade program: ignition and beyond

International Nuclear Information System (INIS)

Storm, E.; Campbell, E.M.; Hogan, W.J.; Lindl, J.D.

1993-01-01

The Lawrence Livermore National Laboratory (LLNL) Inertial Confinement Fusion (ICF) Program is addressing the critical physics and technology issues directed toward demonstrating and exploiting ignition and propagating burn to high gain with ICF targets for both defense and civilian applications. Nova is the primary U.S. facility employed in the study of the X-ray-driven (indirect drive) approach to ICF. Nova's principal objective is to demonstrate that laser-driven hohlraums can achieve the conditions of driver-target coupling efficiency, driver irradiation symmetry, driver pulseshaping, target preheat, and hydrodynamic stability required by hot-spot ignition and fuel compression to realize a fusion gain. (author)

New Novae snack point

CERN Document Server

2012-01-01

Located next to the car park by the flag poles, a few metres from the Main CERN Reception (building 33), a new snack point catered by Novae will open to the public on Wednesday 8 August. More information will be available in the next issue of the Bulletin!

Line Evolution of the Nova V5587 Sgr from Early to Nebula Phase

Directory of Open Access Journals (Sweden)

T. Kajikawa

2015-02-01

Full Text Available The spectral evolution of the nova V5587 Sgr has been monitored at Koyama Astronomical Observatory and Higashi-Hiroshima Observatory, Japan, from the early to nebula phase. The nova rebrightened several times. The spectra during the early phase showed emission lines of H α, H β, O I, He I, He II, N II, Fe II. Nova V5587 Sgr is classified into the Fe II type. The helium abundance of the nova is estimated as N(He/N(H = 0.134 ± 0.09. The light curve, the spectral evolution, and the helium abundance in V5587 Sgr are similar to those of the nova PW Vul.

Does alleviating poverty affect mothers’ depressive symptoms? A quasi-experimental investigation of Mexico’s Oportunidades programme

Science.gov (United States)

Ozer, Emily J; Fernald, Lia CH; Weber, Ann; Flynn, Emily P; VanderWeele, Tyler J

2011-01-01

Background Depression is a major cause of disability, particularly among women; poverty heightens the risk for depression. Beyond its direct effects, maternal depression can harm children’s health and development. This study aimed to assess the effects of a large-scale anti-poverty programme in Mexico (Oportunidades) on maternal depressive symptoms. Methods In 2003, 5050 women living in rural communities who had participated in Oportunidades since its inception were assessed and compared with a group of 1293 women from matched communities, whose families had received no exposure to Oportunidades at the time of assessment but were later enrolled. Self-reported depressive symptoms were measured using the Center for Epidemiologic Studies Depression Scale (CES-D). Ordinary least squares regressions were used to evaluate the treatment effect of programme participation on depression while adjusting for covariates and clustering at the community level. Results Women in the treatment group had lower depressive symptoms than those in the comparison group (unadjusted mean CES-D scores: 16.9 ± 9.8 vs 18.6 ± 10.2). In multivariable analyses, programme participation was associated with lower depression whilst controlling for maternal age, education and household demographic, ethnicity and socio-economic variables [β = −1.7 points, 95% confidence interval (95% CI) −2.46 to −0.96, P poverty and depressive symptoms. Our results emphasize that the well-being of individuals is responsive to macro-level economic policies and programmes. PMID:21737404

Modelo de apoio à aprendizagem de gestão de cadeia de suprimentos utilizando a metodologia system dynamics

OpenAIRE

Luís Sérgio Paçó Lopes

2009-01-01

Na década de 80 uma nova abordagem competitiva e gerencial denominada Gestão de Cadeia de Suprimento (GCS) inaugura um novo comportamento no âmbito das operações. Os avanços da logística, da tecnologia de informação e dos estudos organizacionais criaram as condições para que as organizações passassem a operar segundo essa nova visão, que, ao lado de novas oportunidades, fez também surgir uma série de questões ainda por responder. As organizações passam a ser geridas sob uma perspectiva mais a...

Multicolour photometry and spectroscopy of the slow nova V475 Sct (Nova Scuti 2003)

Czech Academy of Sciences Publication Activity Database

Chochol, D.; Katysheva, N.A.; Pribulla, T.; Schmidtobreick, L.; Shugarov, S.Yu.; Škoda, Petr; Šlechta, Miroslav; Vittone, A.A.; Volkov, I. M.

2006-01-01

Roč. 6, č. 1 (2006), s. 137-142 ISSN 1009-9271 Institutional research plan: CEZ:AV0Z10030501 Keywords : cataclysmic variables * circumstellar matter * stars: novae Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 0.746, year: 2006

Photometric and spectroscopic variability of the slow nova V475 Sct (Nova Scuti 2003)

Czech Academy of Sciences Publication Activity Database

Chochol, D.; Katysheva, N.A.; Pribulla, T.; Schmidtobreick, L.; Shugarov, S.Yu.; Škoda, Petr; Šlechta, Miroslav; Vittone, A.A.; Volkov, I. M.

2005-01-01

Roč. 35, č. 2 (2005), s. 107-129 ISSN 1335-1842 R&D Projects: GA AV ČR KSK2043105 Institutional research plan: CEZ:AV0Z1003909 Keywords : novae * photometry * spectroscopy Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

INTERVENCIONES EN EL PATRIMONIO ARQUITECTÓNICO: 5+1 OPORTUNIDADES / Interventions in the architectural heritage: 5 +1 opportunities

Directory of Open Access Journals (Sweden)

Eduardo Pesquera González

2011-05-01

Full Text Available RESUMEN A través del término oportunidad se introducen diferentes intervenciones en un variado patrimonio arquitectónico realizadas en los últimos años por el estudio Pesquera Ulargui arquitectos. Unas oportunidades que se adecúan a la especificidad de cada situación, a la voluntad de aprovechamiento, de creación de pautas para cada acción, …, a la búsqueda de mecanismos proyectuales ya “contenidos” en la obra a intervenir. Un análisis a través de varias actuaciones que enlazan una cadena de posibilidades, una cadena que hace que la arquitectura se active nuevamente y que permita su continuidad en el futuro con la puerta abierta a nuevas oportunidades. SUMMARY The different interventions made by the studio Pesquera Ulargui Arquitectos in recent years in diverse architectural heritage situations are introduced through the term opportunity. Some opportunities that are adapted to the peculiarities of each situation, to the willingness to use, to create guidelines for each action, to the search for mechanisms of the project already “contained” within the works destined for intervention. An analysis across several activities that link a chain of possibilities, a chain that reactivates architecture and which allows continuity in the future, with the door open to new opportunities.

The progenitor of Nova Cygni 2006 (=V2362 Cyg)

NARCIS (Netherlands)

Steeghs, D.; Greimel, R.; Drew, J.; Irwin, M.; Gaensicke, B.; Groot, P.J.; Knigge, C.

2006-01-01

We report on the detection of the likely progenitor to Nova Cygni 2006 = V2362 Cyg (IAUC #8697, #8698, ATel #792) using images from the INT Photometric H-Alpha Survey (IPHAS; http://www.iphas.org). The field containing the classical nova was observed as part of our galactic plane survey on Aug. 3rd

Nova Scotia's new gas distribution regime

Energy Technology Data Exchange (ETDEWEB)

MacIsaac, J.B. [Cox Hanson O' Reilly Matheson, Halifax, NS (Canada)

2002-07-01

The most recent amendments to Nova Scotia's gas distribution regime were described in detail. The amended legislation includes: (1) elimination of mandatory service targets, (2) franchise terms of 25 years, (3) a 10 year prohibition on industrial by-pass, (4) gas sales licenses are now required to market gas in Nova Scotia, (5) distributors can offer bundled services, (6) the elimination of province wide uniform tolls for low volume customers, (7) public utilities are permitted to apply for a distribution franchise and to market natural gas, (8) ex-party filing of interim rates, (9) the Pipeline Act applies to the construction of gas distribution systems, (10) socio-economic studies are required for parties seeking a single-end user franchise outside a franchise area, and (11) regulations for underground gas storage have been removed from the legislation. It was noted that these significant changes to the statutory framework of Nova Scotia's delivery of natural gas are sending encouraging signals to parties considering investing in the distribution network in the province. It was also noted, that as in any industry, success of natural gas distribution in Nova Scotia will depend on economics and not on structural changes. 66 refs.

Cross Check of NOvA Oscillation Probabilities

Energy Technology Data Exchange (ETDEWEB)

Parke, Stephen J. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Dept. of Theoretical Physics; Messier, Mark D. [Indiana Univ., Bloomington, IN (United States). Dept. of Physics

2018-01-12

In this note we perform a cross check of the programs used by NOvA to calculate the 3-flavor oscillation probabilities with a independent program using a different method. The comparison is performed at 6 significant figures and the agreement, $|\\Delta P|/P$ is better than $10^{-5}$, as good as can be expected with 6 significant figures. In addition, a simple and accurate alternative method to calculate the oscillation probabilities is outlined and compared in the L/E range and matter density relevant for the NOvA experiment.

The Radio Light Curve of the Gamma-Ray Nova in V407 CYG: Thermal Emission from the Ionized Symbiotic Envelope, Devoured from Within by the Nova Blast

Science.gov (United States)

Chomiuk, Laura; Krauss, Miriam I.; Rupen, Michael P.; Nelson, Thomas; Roy, Nirupam; Sokoloski, Jennifer L.; Mukai, Koji; Munari, Ulisse; Mioduszewski, Amy; Weston, Jeninfer;

Centro cívico de Ichihara – Japón

Directory of Open Access Journals (Sweden)

Funakoshi, T.

1975-10-01

Full Text Available Occuping somewhat more than 1/10 of a 160,000 m2 site rises the Civic Centre of Ichihara that comprises: Social Centre; Municipal Government with Prefecture and Administration; Sociological-educational Centre; Parliament; Welfare Centre and Power Station. The plot is divided into two parts by a highway, with the Social Centre in the smallest part and in the other the remaining buildings are distributed, grouped on both sides of a pedestrian bridge that connects the buildings. The project of the entire complex has been developed starting from the elementary spaces until urban scale was attained; the composition of each space has been borne out of the mutual relations between men. In this Centre an attempt has been made to interpenetrate all the zones so as to achieve a visual relation between them. The Civic Centre is being completed by a spacious parking lot, paths and extensive gardens.Ocupando algo más de la décima parte de una parcela de 160.000 m2 se levanta el Centro Cívico de Ichihara, que comprende: Centro Social; Ayuntamiento con Prefectura y Administración; Centro Sociológico-educacional; Parlamento; Centro de Bienestar Social, y Central de Energía. El solar está dividido en dos partes por una autopista, con el Centro Social en la zona más pequeña, y en la otra se distribuye el resto de los edificios, agrupados a los lados de un gran puente peatonal que los comunica. El proyecto de todo el conjunto se ha desarrollado partiendo de los espacios elementales hasta llegar a la escala urbana; la composición de cada espacio nace de las relaciones mutuas entre los hombres. En este Centro se ha llevado a cabo un intento de interpenetrar todas las zonas, para permitir una relación visual entre ellas. El Centro Cívico se completa con numerosas plazas de aparcamiento, viales y amplias zonas ajardinadas.

Comunidades de práctica en la red: indicadores y condiciones para su desarrollo

OpenAIRE

Tirado Morueta, Ramón; Boza Carreño, Ángel; Aguaded Gómez, José Ignacio

2009-01-01

Las prácticas curriculares de los estudiantes universitarios son una oportunidad para el desarrollo de procesos de aprendizaje realmente significativos dado que se parte de problemas o casos reales que surgen en su centro de prácticas. En este sentido, los rasgos que identifican el concepto de comunidad de prácticas nos hacen sospechar de su utilidad como eslabón entre la escuela y el entorno laboral, y de si son un recurso idóneo para aprovechar las oportunidades didácticas qu...

Diseño de un modelo de crecimiento de mercado para una comercializadora de Maquinaria Industrial.

OpenAIRE

Medina Blancas, Adrián.

2015-01-01

El objeto de este estudio es determinar el por qué las empresas dedicadas a la comercialización de productos industriales de rehúso como lo son maquinaria, autos y algunos desechos industriales no cuentan con una participación sólida en el mercado de la compra venta en la zona centro del país. Partiendo del supuesto de que la poca explotación del mercado y sus oportunidades de crecimiento comercial son por la falta de conocimiento de oportunidad de mercado que se puede presenta...

Exquisite Nova Light Curves from the Solar Mass Ejection Imager (SMEI)

OpenAIRE

Hounsell, R.; Bode, M. F.; Hick, P. P.; Buffington, A.; Jackson, B. V.; Clover, J. M.; Shafter, A. W.; Darnley, M. J.; Mawson, N. R.; Steele, I. A.; Evans, A.; Eyres, S. P. S.; O'Brien, T. J.

2010-01-01

We present light curves of three classical novae (KT Eridani, V598 Puppis, V1280 Scorpii) and one recurrent nova (RS Ophiuchi) derived from data obtained by the Solar Mass Ejection Imager (SMEI) on board the Coriolis satellite. SMEI provides near complete sky-map coverage with precision visible-light photometry at 102-minute cadence. The light curves derived from these sky maps offer unprecedented temporal resolution around, and especially before, maximum light, a phase of the nova eruption n...

Nova Aql 1918: A nude old nova

International Nuclear Information System (INIS)

Selvelli, P.L.; Cassatella, A.

1981-01-01

IUE observations at high and low resolution of Nova Aql 1918 show neither evidence of outflow nor the presence of nebular lines. This indicates that the shell ejected at the time of the outburst and surrounding the system for many years (Mustel and Boyarchuck, 1970) has by now disappeared. The high excitation spectrum presents rapid variations in the far UV and eclipse effects in the near UV that seem well correlated with the orbital phase. The observations can be interpreted in terms of phenomena occurring in or near the accretion disk surrounding the white dwarf. However, the small inclination of the orbital axis raises serious problems in trying to model the system. (Auth.)

Tourism Development Plan for Nova Lima, MG/BR: A Case Study

Directory of Open Access Journals (Sweden)

Porto Aluisio Finazzi

2014-01-01

Full Text Available The project called “Tourism Development Plan of Nova Lima, MG” was a labor required by the city of Nova Lima, through the Secretary of Municipal Tourism. The municipality of Nova Lima has numerous tourist attractions or potential for them attractive, and is developing a work of public policies aimed at structuring this activity. The objective of this project was to offer to its population, as well as the government and the private sector, the assurance of quality activity according to the international, national and state the assumptions referred to in the Municipal Tourism Plan. All work was developed by Scientific and Technical Research Data Collection, which took into consideration the participation of local stakeholders in the development of tourism through public hearings with the Section for Local Tourism, making use of Information from the Current Municipal Development Plan for Nova Lima and its Secretary of Tourism. We also note that the study was conducted in accordance with the guidelines and considerations of the Municipal Tourism Council (COMTUR of Nova Lima.

Spectroscopic observations of Nova Cygni 1975: The coronal line region revisited

International Nuclear Information System (INIS)

Ferland, G.J.; Lambert, D.L.; Woodman, J.H.

1986-01-01

A synopsis of the McDonald Observatory spectrophotometric observations of Nova Cyg 1975 (V1500 Cyg) is presented. We present these data in a form in which they can be readily accessed in the future, and also study the continous spectrum during the early nebular phase. We show that (1) the remnant probably maintained a luminosity at or above the Eddington limit for at least a year after outburst, (2) free-free emission from the coronal line region made a significant contribution to the optical continuum, and (3) the coronal line region was probably a significant source of ionizing radiation. The energetics of this nova appear to be dominated by the lift-off energy from the white dwarf and radiation from the coronal line region. Thus the light curve of Nova Cyg may tell more about the cooling of the coronal line region than about the decline of the central object. In appendices we discuss the argon abundance of Nova Cyg (less than 8 times solar) and describe how to obtain copies of the McDonald nova data

UBVJHKLM Photometry and Low-Resolution Spectroscopy of Nova Delphini 2013 (V339 Del

Directory of Open Access Journals (Sweden)

Burlak M. A.

2015-03-01

Full Text Available We present UBVJHKLM photometric observations of Nova Delphini 2013 that started several hours before maximum light and lasted for 130 nights. Using the obtained data, we derived several photometric parameters of the Nova: the time of maximum light, brightness at maximum, rate of decline, t2 = 11 d. This places Nova Del 2013 among fast novae according to the classification introduced by Payne-Gaposchkin. We estimated the interstellar reddening EB−V = 0.18 using maps of Galactic extinction and the absolute brightness in maximum light via the MMRD relation that allowed us to determine the distance D ≈ 2.7 kpc and height above the Galactic plane z ≈ 440 pc. Low-resolution spectroscopy shows that Nova Del 2013 belongs to the Fe II spectral type of novae. The broad emission feature near 6825 Å observed during 2013 August and September may be the Raman-scattered OVI 1032 Å line.

Tracking the NOvA Detectors' Performance

Science.gov (United States)

Psihas, Fernanda; NOvA Collaboration

2016-03-01

The NOvA experiment measures long baseline νμ -->νe oscillations in Fermilab's NuMI beam. We employ two detectors equipped with over 10 thousand sets of data-taking electronics; avalanche photo diodes and front end boards which collect and process the scintillation signal from particle interactions within the detectors. These sets of electronics -as well as the systems which power and cool them- must be monitored and maintained at precise working conditions to ensure maximal data-taking uptime, good data quality and a lasting life for our detectors. This poster describes the automated systems used on NOvA to simultaneously monitor our data quality, diagnose hardware issues, track our performance and coordinate maintenance for the detectors.

Nova Scotia Resources Limited annual report, 1992

International Nuclear Information System (INIS)

1992-01-01

Nova Scotia Resources was established in 1981 by the provincial government to invest in and manage Nova Scotia's participation in petroleum, energy, and mineral development. The company and its subsidiaries hold interests in oil and gas discovery areas and producing fields in the Nova Scotia offshore, and owns producing oil and gas interests in western Canada. In June 1992, oil production began from the Cohasset project, representing Canada's first commercial offshore oil production. Nearly 4 million bbl of crude will be sold in the first production season. Work is continuing on additional producing wells; the production life of the Cohasset project is currently estimated at 6 y. Offshore exploration activity is also continuing under four exploration licenses. For the 12 months ending March 31, 1992, net earnings from western oil and gas production were $369,000. Total gross revenues from oil and gas producing properties for the year were ca $4.8 million. Other 1992 activities include active exploration for salt and potash sites with potential for underground storage of natural gas. Financial statements are included. 14 figs., 2 tabs

Exquisite Nova Light Curves from the Solar Mass Ejection Imager (SMEI)

Science.gov (United States)

Hounsell, R.; Bode, M. F.; Hick, P. P.; Buffington, A.; Jackson, B. V.; Clover, J. M.; Shafter, A. W.; Darnley, M. J.; Mawson, N. R.; Steele, I. A.; Evans, A.; Eyres, S. P. S.; O'Brien, T. J.

2010-11-01

We present light curves of three classical novae (CNe; KT Eridani, V598 Puppis, V1280 Scorpii) and one recurrent nova (RS Ophiuchi) derived from data obtained by the Solar Mass Ejection Imager (SMEI) on board the Coriolis satellite. SMEI provides near complete skymap coverage with precision visible-light photometry at 102 minute cadence. The light curves derived from these skymaps offer unprecedented temporal resolution around, and especially before, maximum light, a phase of the eruption normally not covered by ground-based observations. They allow us to explore fundamental parameters of individual objects including the epoch of the initial explosion, the reality and duration of any pre-maximum halt (found in all three fast novae in our sample), the presence of secondary maxima, speed of decline of the initial light curve, plus precise timing of the onset of dust formation (in V1280 Sco) leading to estimation of the bolometric luminosity, white dwarf mass, and object distance. For KT Eri, Liverpool Telescope SkyCamT data confirm important features of the SMEI light curve and overall our results add weight to the proposed similarities of this object to recurrent rather than to CNe. In RS Oph, comparison with hard X-ray data from the 2006 outburst implies that the onset of the outburst coincides with extensive high-velocity mass loss. It is also noted that two of the four novae we have detected (V598 Pup and KT Eri) were only discovered by ground-based observers weeks or months after maximum light, yet these novae reached peak magnitudes of 3.46 and 5.42, respectively. This emphasizes the fact that many bright novae per year are still overlooked, particularly those of the very fast speed class. Coupled with its ability to observe novae in detail even when relatively close to the Sun in the sky, we estimate that as many as five novae per year may be detectable by SMEI.

First Neutrino Oscillation Results from the NOvA experiment

Energy Technology Data Exchange (ETDEWEB)

Sachdev, Kanika [Fermilab

2016-11-29

NOvA is a long-baseline neutrino oscillation experiment on the NuMI muon neutrino beam at Fermilab. It consists of two functionally identical, nearly fully-active liquid-scintillator tracking calorimeters. The Near Detector (ND) at Fermilab is used to study the neutrino beam spectrum and composition before oscillations occur. The Far Detector in northern Minnesota, 810 km away, observes the oscillated beam and is used to extract the oscillation parameters. NOvA is designed to observe oscillations in two channels: disappearance channel ( ν μ → ν μ ) and ν e appearance channel ( ν μ → ν e ). This paper reports the measurements of both these channels based on the first NOvA data taken from February 16, 2014 till May 15, 2015

Spectrophotometry of nova Cygni 1975

International Nuclear Information System (INIS)

Panek, R.J.

1977-01-01

Low-resolution spectrophotometry of nova Cygni 1975 is presented for eight nights in September 1975. Representative spectrum scans from 3600 A to 4500 A (10 A bandpass) and from 6350 A to 6750 A (20 A bandpass) also are shown

Franchising in Nova Scotia

Energy Technology Data Exchange (ETDEWEB)

Hoffman, G. [Nova Scotia Petroleum Directorate, Halifax, NS (Canada)

1998-09-01

Opportunities for the local distribution of natural gas in Nova Scotia were reviewed, with special emphasis on franchising. Franchising in Nova Scotia began in 1980, made possible by the passage of the Gas Utilities Act and the Pipeline Act which promised western Canadian natural gas to eastern Canada. However, proposals for franchisees to distribute natural gas in the province were abandoned as the hope for natural gas transmission service to the province faded. The plummeting of world oil prices by the mid-1980s was also a contributory factor. Discovery and development of natural gas facilities around Sable Island led to the September 1997 proclamation of the Gas Distribution Act, which also led to the revival of interest in franchising. The Act provides for the competitive marketing of natural gas as a commodity and the regulation of the gas delivery system under a franchise agreement. Competitive applications are expected early in 1998, with awards of franchises in late 1998. Construction and gas delivery services should begin operations late in 1999.

Franchising in Nova Scotia

International Nuclear Information System (INIS)

Hoffman, G.

1998-01-01

Opportunities for the local distribution of natural gas in Nova Scotia were reviewed, with special emphasis on franchising. Franchising in Nova Scotia began in 1980, made possible by the passage of the Gas Utilities Act and the Pipeline Act which promised western Canadian natural gas to eastern Canada. However, proposals for franchisees to distribute natural gas in the province were abandoned as the hope for natural gas transmission service to the province faded. The plummeting of world oil prices by the mid-1980s was also a contributory factor. Discovery and development of natural gas facilities around Sable Island led to the September 1997 proclamation of the Gas Distribution Act, which also led to the revival of interest in franchising. The Act provides for the competitive marketing of natural gas as a commodity and the regulation of the gas delivery system under a franchise agreement. Competitive applications are expected early in 1998, with awards of franchises in late 1998. Construction and gas delivery services should begin operations late in 1999

Optical and Near-infrared Study of Nova V2676 Oph 2012

Energy Technology Data Exchange (ETDEWEB)

Raj, A. [Korea Astronomy and Space Science Institute, Daejeon, 34055 (Korea, Republic of); Das, R. K. [Department of Astrophysics and Cosmology, S N Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700106 (India); Walter, F. M., E-mail: ashish.raj@iiap.res.in [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794-3800 (United States)

2017-02-01

We present optical spectrophotometric and near-infrared (NIR) photometric observations of the nova V2676 Oph covering the period from 2012 March 29 through 2015 May 8. The optical spectra and photometry of the nova have been taken from SMARTS and Asiago; the NIR photometry was obtained from SMARTS and Mt. Abu. The spectra were dominated by strong H i lines from the Balmer series, Fe ii, N i, and [O i] lines in the initial days, typical of an Fe ii type nova. The measured FWHM for the H β and H α lines was 800–1200 km s{sup −1}. There was pronounced dust formation starting 90 days after the outburst. The J − K color was the largest among recent dust-forming novae.

THE RADIO LIGHT CURVE OF THE GAMMA-RAY NOVA IN V407 CYG: THERMAL EMISSION FROM THE IONIZED SYMBIOTIC ENVELOPE, DEVOURED FROM WITHIN BY THE NOVA BLAST

Energy Technology Data Exchange (ETDEWEB)

Chomiuk, Laura; Krauss, Miriam I.; Rupen, Michael P.; Roy, Nirupam; Mioduszewski, Amy [National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801 (United States); Nelson, Thomas [School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, MN 55455 (United States); Sokoloski, Jennifer L.; Weston, Jennifer [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Mukai, Koji [CRESST and X-ray Astrophysics Laboratory, NASA/GSFC, Greenbelt, MD 20771 (United States); Munari, Ulisse [INAF Astronomical Observatory of Padova, I-36012 Asiago (VI) (Italy); O' Brien, Tim J. [Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester M13 9PL (United Kingdom); Eyres, Stewart P. S. [Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE (United Kingdom); Bode, Michael F., E-mail: chomiuk@pa.msu.edu [Astrophysics Research Institute, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead CH41 1LD (United Kingdom)

2012-12-20

We present multi-frequency radio observations of the 2010 nova event in the symbiotic binary V407 Cygni, obtained with the Karl G. Jansky Very Large Array (VLA) and spanning 1-45 GHz and 17-770 days following discovery. This nova-the first ever detected in gamma rays-shows a radio light curve dominated by the wind of the Mira giant companion, rather than the nova ejecta themselves. The radio luminosity grew as the wind became increasingly ionized by the nova outburst, and faded as the wind was violently heated from within by the nova shock. This study marks the first time that this physical mechanism has been shown to dominate the radio light curve of an astrophysical transient. We do not observe a thermal signature from the nova ejecta or synchrotron emission from the shock, due to the fact that these components were hidden behind the absorbing screen of the Mira wind. We estimate a mass-loss rate for the Mira wind of M-dot{sub w} approx. 10{sup -6} M{sub Sun} yr{sup -1}. We also present the only radio detection of V407 Cyg before the 2010 nova, gleaned from unpublished 1993 archival VLA data, which shows that the radio luminosity of the Mira wind varies by a factor of {approx}>20 even in quiescence. Although V407 Cyg likely hosts a massive accreting white dwarf, making it a candidate progenitor system for a Type Ia supernova, the dense and radially continuous circumbinary material surrounding V407 Cyg is inconsistent with observational constraints on the environments of most Type Ia supernovae.

Estrutura de capital e janelas de oportunidade: testes no mercado brasileiro

Directory of Open Access Journals (Sweden)

Eduardo Alexandre Mendes

2009-12-01

Full Text Available Este estudo testa a teoria das janelas de oportunidade (EMTT para o mercado acionário brasileiro. Este texto é uma adaptação do artigo de Baker e Wurgler (2002 que testaram com sucesso essa teoria para o mercado acionário americano. A teoria não foi comprovada no mercado brasileiro. A alavancagem diminuiu no primeiro ano após as ofertas públicas iniciais (IPO, mas cresceu novamente sem apresentar a persistência necessária para corroborar a teoria.

Tecnología RFID en Colombia, un negocio con muchas oportunidades

OpenAIRE

León Fajardo, Federico

2013-01-01

Este trabajo busca identificar y definir porque la tecnología RFID puede ser un buen negocio de oportunidad en el mercado Colombiano, cada vez esté, está más enfocado en generar procesos de mejora continua que produzcan eficiencia al interior de las organizaciones, actualmente el uso de la tecnología es una herramienta clave para que las organizaciones se mantengan a la vanguardia. Con base en el estudio vemos que la tecnología RFID, genera eficiencia en el flujo de la información, mejora el ...

Retos y oportunidades de la comunicación en África

Directory of Open Access Journals (Sweden)

Jean-Arsène Yao

2012-03-01

Full Text Available Este artículo pone de relieve la importancia de la comunicación, en todas sus dimensiones: interpersonal, organizacional, de masas y para el desarrollo, como palanca del cambio social y de construcción de sociedades más integradas en particular en África. De manera específica, hace alusión a la situación de los periodistas en África, abordando cuestiones como los derechos humanos y límites y oportunidades de la libertad de expresión en el continente.

5. Neuromarketing: uma nova disciplina acadêmica?

OpenAIRE

Eric David Cohen; Gabriela Guimarães Lima; Peter Alexander Bleinroth Schulz

2017-01-01

Através da aplicação de técnicas neurocientíficas, o Neuromarketing busca entender como ocorrem os processos de decisão de compra. Verifica-se que há um grande movimento em torno do Neuromarketing no ambiente empresarial, apontando que o desenvolvimento desta nova área de conhecimento, bem como a sua possível autonomia, estão em desenvolvimento. Por meio de um estudo exploratório, mapeou-se a construção deste campo de conhecimento no tempo, levando à formação de uma possível nova disciplina c...

New studies of nuclear decay γ-rays from novae

International Nuclear Information System (INIS)

Starrfield, S.; Truran, J.W.; Wiescher, M.C.; Sparks, W.M.

1997-01-01

The cause of the nova outburst is a thermonuclear runaway (TNR) in hydrogen rich material transferred by a companion onto a white dwarf. Studies of this phenomenon have shown that the TNR produces large concentrations of the short lived positron unstable isotopes of the CNO nuclei which are transported to the surface by convection so that early in the outburst we expect significant numbers of radioactive decays to occur at the surface. The resulting γ-ray emission may be detectable from nearby novae early in their outbursts. The TNR is also expected to produce substantial amounts of 7 Be and 22 Na. Their decays also yield potentially detectable levels of γ-ray emission for relatively nearby novae. We are also interested in the role played by novae in the production of the ∼2M circle-dot of 26 Al found in the galaxy. In order to improve our predictions of this phenomenon, we have performed a new set of calculations of TNR close-quote s on ONeMg and CO white dwarfs with an updated nuclear reaction network and opacities. copyright 1997 American Institute of Physics

El concepto estadístico de centro de gravedad

OpenAIRE

Ruiz, Gabriel

2003-01-01

El objetivo de este trabajo es establecer una propuesta didáctica consistente en relacionar el concepto estadístico de centro de gravedad de una distribución de frecuencias bidimensional con el concepto físico y geométrico del mismo nombre. Las coordenadas del centro de gravedad son medias aritméticas, lo que nos permitirá visualizar algunas propiedades de la media aritmética.

Hohlraum drive and implosion experiments on Nova. Revision 1

International Nuclear Information System (INIS)

Kilkenny, J.D.; Suter, L.J.; Cable, M.D.

1994-01-01

Experiments on Nova have demonstrated hohlraum radiation temperatures up to 300 eV and in lower temperature experiments reproducible time integrated symmetry to 1--2%. Detailed 2-D LASNEX simulations satisfactorily reproduce Nova's drive and symmetry scaling data bases. Hohlraums has been used for implosion experiments achieving convergence ratios (initial capsule radius/final fuel radius) up to 24 with high density glass surrounding a hot gas fill

Infrared and optical observations of Nova Mus 1983

International Nuclear Information System (INIS)

Whitelock, P.A.; Carter, B.S.; Feast, M.W.; Glass, I.S.; Laney, D.; Menzies, J.W.

1984-01-01

Extensive optical (UBVRI) and infrared (JHKL) photometry of Nova Mus 1983 obtained over a period of 300 days is tabulated. Infrared and optical spectra are described. Although by classical definition this was a fast nova its later development was slower than for typical objects of this class. Surprisingly the development of infrared thermal dust emission did not occur. Throughout the period covered, the infrared emission was characteristic of a bound-free plus free-free plasma continuum with emission lines. (author)

Preliminary performance and ICF target experiments with Nova

International Nuclear Information System (INIS)

Drake, R.P.

1985-11-01

In December 1984, the Nova facility fired all ten laser arms, converted the output 1.05 micron energy to 0.35 micron light, and focused the 0.35 micron light through a 4 mm pinhole in the ten-beam target chamber. Since that time, a two-beam target chamber has been added, the performance of the laser evaluated, and preparation has been made for target experiments. This paper summarizes the performance of Nova and describes progress and plans for target experiments

SALT high-resolution spectroscopy of nova PNV J15384000-4744500

Science.gov (United States)

Aydi, E.; Buckley, D. A. H.; Mohamed, S.; Whitelock, P. A.

2018-06-01

We report on high-resolution spectroscopy of PNV J15384000-4744500 which was reported as a possible nova by Rob Kaufman (Bright, Victoria, Australia; CBAT follow-up: http://www.cbat.eps.harvard.edu/unconf/followups/J15384000-4744500.html) and confirmed as a classical nova by F. Walter (ATel #11681).

Statistical analysis of dwarf nova outbursts

International Nuclear Information System (INIS)

Gicger, A.

1987-01-01

Correlation between maximum brightness, outburst width, lengths of preceding and following intervals has been studied for 14 dwarf novae (mostly from southern sky). Significant correlations (ρ ≥ 0.4) occur only in 16 per cent of cases, what confirms earlier results of Szkody and Mattei (1984). Global correlations have also been studied between mean photometric parameters and binary system parameters using a sample including over 30 objects. The most interesting result is the strong correlation (ρ = +0.94) between the orbital period and the outburst duration. It implies that the quantity α(z 0 /r) 2 is approximately constant for all dwarf novae. Using typical estimates for z 0 /r we get α = 0.2. 30 refs., 1 figs., 2 tabs. (author)

Neutrino Oscillation Results from NOvA

CERN Multimedia

CERN. Geneva

2016-01-01

NOvA is an accelerator long-baseline neutrino oscillation experiment optimised to measure electron neutrino appearance in a high-purity beam of muon neutrinos from Fermilab. The exciting discovery of the theta13 neutrino mixing angle in 2012 has opened a door to making multiple new measurements of neutrinos. These include leptonic CP violation, the neutrino mass ordering and the octant of theta23. NOvA with its 810km baseline and higher energy beam has about triple the matter effect of T2K which opens a new window on the neutrino mass ordering. With about 20% of our design beam exposure and significant analysis improvements we have recently released updated results. I will present both our disappearance and appearance measurements.

La educabilidad: atributo mediacional entre la realidad curricular y organizativa del centro escolar

Directory of Open Access Journals (Sweden)

Miguel PÉREZ FERRA

2009-11-01

Full Text Available Es evidente, que la actividad de los centros educativos necesita para alcanzar las finalidades que justifican su existencia y trabajo, ser planificada, ordenada, programada, desarrollada y evaluada. Toda esta labor se sintetiza y recoge en el Proyecto de Centro, instrumento de planificación a medio plazo, que concreta y desarrolla los elementos que lo integran: Finalidades educativas, Proyecto curricular de Centro y Reglamento de Organización y Funcionamiento. En este artículo realizamos una reflexión sobre la conveniencia, posibilidad y realidad de utilización con carácter orgánico de dos documentos esenciales en el Proyecto de Centro. Nos referimos al Proyecto Curricular de Centro y al Reglamento de Organización y Funcionamiento. El estudio integra tres perspectivas complementarias: la realidad ontológica o conveniencia de dicha relación que intentamos justificar desde el atributo educabilidad, propio del hombre, nexo de unión entre la esencia de los dos documentos; la realidad histórica de los últimos cincuenta años y su incidencia en la relación organizativo-curricular de los centros; por último, valoramos la trayectoria lineal de la formación del profesorado en España y sus respuestas al centro como unidad organizativa, profesional y curricular.

Effect of Undiagnosed Deep Adenomyosis After Failed NovaSure Endometrial Ablation

NARCIS (Netherlands)

Mengerink, B.B.; Wurff, A.A. van der; Haar, J.F. ter; Rooij, I.A.L.M. van; Pijnenborg, J.M.

2015-01-01

STUDY OBJECTIVE: To determine the prevalence of adenomyosis and deep adenomyosis after NovaSure (Hologic Inc., Newark, DE) endometrial ablation in hysterectomy specimens after NovaSure endometrial ablation failure. DESIGN: Prospective observational study (Canadian Task Force classification II-2).

Ten-year literature review of global endometrial ablation with the NovaSure® device

Directory of Open Access Journals (Sweden)

Gimpelson RJ

2014-03-01

Full Text Available Richard J Gimpelson Mercy Clinic, Minimally Invasive Gynecology, Department of Obstetrics and Gynecology, Mercy Hospital St Louis, St Louis, MO, USA Abstract: This review examines the peer-reviewed literature describing prospective studies that report amenorrhea rates, patient satisfaction, and surgical reintervention rates following the NovaSure® endometrial ablation procedure. A search of the English-language literature published from 2000 to 2011 was conducted using PubMed. Ten prospective studies, six single-arm NovaSure trials, and four randomized controlled trials comparing the NovaSure procedure with other global endometrial ablation modalities met the inclusion criteria and were reviewed. The follow-up periods ranged from 6 to 60 months. Amenorrhea rates for the NovaSure procedure ranged from 30.0% to 75.0%. Patients who reported being satisfied with the NovaSure procedure ranged from 85.0% to 94.0%. In randomized controlled trials with other global endometrial ablation modalities, amenorrhea rates at 12 months with the NovaSure procedure ranged from 43.0% to 56.0%, while other modalities ranged from 8% to 24%. In addition, this manuscript reviews the following: the NovaSure technology; use of the NovaSure procedure in the office setting; intraoperative and postoperative pain; effects on premenstrual syndrome (PMS; dysmenorrhea; special circumstances, including presence of uterine disease, history of cesarean delivery, coagulopathy, or use of anticoagulant medication; post-procedure uterine cavity assessment and cancer risk; contraception and pregnancy; and safety. Keywords: abnormal uterine bleeding, menorrhagia, endometrial ablation, NovaSure®

O Camelódromo e o novo CPC – Centro Popular de Compras Impactos Sobre O Espaço Urbano

Directory of Open Access Journals (Sweden)

Mg. Arq. Cíntia Perozzo dos Santos

2011-11-01

Full Text Available Este artigo investiga a percepção dos usuários do centro da cidade de Porto Alegre quanto à mudança do Camelódromo para o novo Centro Popular de Compras (CPC. São comparados os níveis de satisfação de distintos grupos de usuários, quanto ao uso, estética e segurança quanto ao crime. Este trabalho se justifica pela carência de informações acerca dos impactos causados pelo comércio ambulante no espaço urbano, conforme a percepção dos seus usuários. Ainda, existe uma carência de estudos comparativos entre os impactos causados por essas estruturas móveis e as expectativas que os usuários possuem em relação às novas edificações construídas para realocar os camelôs. Como métodos de coleta de dados, foram aplicados diferentes tipos de questionários, e os dados foram analisados quantitativamente, a partir de testes estatísticos não-paramétricos realizados no programa SPSS/PC. Os resultados mostram, por exemplo, que os impactos do Camelódromo no espaço urbano são percebidos pela maioria dos usuários como negativos quanto à estética e à segurança. Por outro lado, as expectativas em relação à estética e à segurança do CPC são positivas. Quanto ao uso, a maioria dos respondentes que freqüenta o Camelódromo pretende freqüentar o CPC.

Quasi-periodic luminosity variations in dwarf novae

International Nuclear Information System (INIS)

Robinson, E.L.; Nather, R.E.

1979-01-01

We have identified quasi-periodic oscillations in the light curves of five dwarf novae--U Gem, SS Cyg, RU Peg, KT Per, and VW Hyi-- and in the light curve of the quasi-periodic X-ray source Sco X-1. The mean periods of the quasi-periodic oscillations range from 32 s in SS Cyg to 147 s in KT Per and 165 s in Sco X-l. Their amplitudes are typically 0.005--0.0l mag. The properties of the quasi-periodic oscillations are represented well by a second-order autoregressive process. Use of this representation shows that the length of time over which the quasi-periodic oscillations maintain coherence is very short, typically 3--5 cycles of the oscillations. Thus the quasi-periodic oscillations can be distinguished from the short-period coherent oscillations in dwarf novae, which are usually interpreted as white dwarf pulsations, because t the periods of the quasi-periodic oscillations are 3--4 times longer and their coherence time is much shorter. The quasi-periodic oscillations occur in dwarf novae only during their eruptions and occur in Sco X-l only when the system is bright. The presence of the oscillations does not depend on the subclass to which a dwarf nova belongs or on the morphology of the individual eruptions. We argue that their short periods, their short coherence times, and their presence in Sco X-l require that the quasi-periodic oscillations be produced by the accretion disk, and not by the stars or by the boundary between the a accretion disk and its central star

Hot spot manifestation in eclipsing dwarf nova HT Cassiopeiae

OpenAIRE

Bakowska, K.; Olech, A.

2014-01-01

We report the detection of the hot spot in light curves of the eclipsing dwarf nova HT Cassiopeiae during its superoutburst in 2010 November. Analysis of eight reconstructed light curves of the hot spot eclipses showed directly that the brightness of the hot spot was changing significantly during the superoutburst. Thereby, detected hot spot manifestation in HT Cas is the newest observational evidence for the EMT model for dwarf novae.

Multi-wavelength observations of novae in outburst

International Nuclear Information System (INIS)

Starrfield, S.; Arizona State Univ., Tempe, AZ

1989-01-01

This review serves as the introduction to the observational studies of novae and I will mention a number of results that will be emphasized by other reviewers. Therefore, I will try to provide the physical framework for multi-wavelength observations as applied to studies of novae. I divide the outburst into phases based on the physical effects that are occurring at that time. The first phase is the rise to bolometric maximum and occurs on a convective time scale. The second phase is the rise to visual maximum and occurs on the time scale for the envelope to expand to ∼10 12 cm. The third phase is the time when the nova is emitting at constant bolometric luminosity, but declining optical magnitude, and it lasts until most of the accreted material has been either exhausted or eroded from the surface of the white dwarf. The fourth and final phase is the return is the return to quiescence (turn-off phase) and it occurs at the time that nuclear burning is ending. I will discuss each of these phases in turn and end with a discussion. 36 refs

CREADIS (Centro de Recursos Electrónicos para Alumnos Universitarios con Discapacidad: una iniciativa académica para la alfabetización informacional de los estudiantes universitarios con discapacidad.

Directory of Open Access Journals (Sweden)

Ana Nieves Millán Reyes

2011-07-01

Full Text Available CREADIS (Centro de Recursos Electrónicos para Alumnos Universitarios con Discapacidad se presenta como un portal web de contenidos destinado a los estudiantes universitarios con alguna discapacidad que están vinculados a la Universidad de Granada, y en general a cualquier universidad andaluza o española, como un recurso colectivo, gratuito y de calidad controlada para favorecer el aprendizaje y el acceso a la información desde el principio de la igualdad de oportunidades, la no-discriminación y la accesibilidad universal que se contemplan en la normativa legal que lo avala. Asimismo, está dirigido a aquellas otras personas, asociaciones, educadores, que realicen tareas de asesoramiento. Se presenta como un repositorio de recursos electrónicos de calidad, con valor añadido, que sirva de ventana abierta a la información y al aprendizaje a lo largo de la vida. Constituye una muestra de la responsabilidad social de la universidad y de los profesionales de la información para favorecer los valores anteriores.

Centro de gastronomía y entretenimiento

Directory of Open Access Journals (Sweden)

Felipe Chaverri Peralta

2015-07-01

Full Text Available El Centro de Gastronomía y Entretenimiento fue una práctica de proyecto arquitectónico del Taller de Diseño Nivel 7, Grupo 02, de la Escuela de Arquitectura de la Universidad de Costa Rica (UCR, realizado en el segundo semestre del año 2014. Este proyecto fue ubicado en al noreste del centro de la ciudad de San José, Costa Rica The Food and Entertainment Center was a practice of architectural project Design Workshop Level 7, Group 02, of the School of Architecture at the University of Costa Rica(UCR, in the second half of 2014. This project was located in the northeast downtown San José, Costa Rica.

Dynamic testing of NOVA laser switchyard tower

International Nuclear Information System (INIS)

Weaver, H.J.; Pastrnak, J.W.; Fields, D.E.

1984-01-01

NOVA is the latest in a series of powerful laser systems designed to study the feasibility of initiating a controlled fusion reaction by concentrating several laser beams on a small fuel target. The laser components, turning mirrors and target chamber are all mounted on large steel frame structures. These structures were first analyzed via finite element models to access their seismic integrity as well as their overall vibrational stability. When construction was completed, a modal analysis was performed on the structures to verify and improve the finite element models. This report discusses the linking of the analytical and experimental studies for the NOVA switchyard tower structure

Terra Nova breaks new ground for alliances

International Nuclear Information System (INIS)

Ghiselin, D.

1996-01-01

This paper reviews the development of alliances to help develop the Terra Nova oil and gas field in the offshore Atlantic areas of Canada. Largely attributed to BP, the strategic alliance concept got its start in the North Sea and on the North Slope of Alaska. BP saw it as the best way to take advantage of economy-of-scale, mitigate risk, and achieve outsourcing goals while retaining their core competencies. This paper reviews the methods of developing the alliances, the developing of a development plan for the Terra Nova field, and how the alliance plans to maximize the profittability of the operation for all involved

Discovery of a Probable Nova in M81 and Photometry of Three M81 Novae

Science.gov (United States)

Hornoch, K.; Errmann, R.; Carlisle, Ch.; Vaduvescu, O.

2015-02-01

We report the discovery of a probable nova in M81 on a co-added 1600-s narrow-band H-alpha CCD image taken with the 2.5-m Isaac Newton Telescope (INT) + WFC at La Palma under ~1.6" seeing on 2015 Jan.

SWSex Stars, Old Novae, and the Evolution of Cataclysmic Variables

Directory of Open Access Journals (Sweden)

L. Schmidtobreick

2015-02-01

Full Text Available The population of cataclysmic variables with orbital periods right above the period gap are dominated by systems with extremely high mass transfer rates, the so-called SW Sextantis stars. On the other hand, some old novae in this period range which are expected to show high mass transfer rate instead show photometric and/or spectroscopic resemblance to low mass transfer systems like dwarf novae. We discuss them as candidates for so-called hibernating systems, CVs that changed their mass transfer behaviour due to a previously experienced nova outburst. This paper is designed to provide input for further research and discussion as the results as such are still very preliminary.

a Synoptic Study of AN X-Ray Nova in Outburst

Science.gov (United States)

McClintock, Jeffrey

Optical studies of X-ray novae in quiescence have yielded compelling evidence for black holes in binary systems. However, X-ray studies in quiescence are severely constrained by the near absence of high energy emission. Thus, further observational advances in black hole astrophysics require a substantial commitment to observe X-ray novae in outburst in just that spectral range accessible to XTE. We propose an agressive campaign of X-ray observations of the next non-pulsing X-ray nova that rises above 3 Crab at 2-10 keV. We further propose a coordinated and intensive campaign of optical and radio observations covering both hemispheres. The observations will provide a full temporal and spectral view of the outburst cycle.

Status for CASA NOVA konsortiet

DEFF Research Database (Denmark)

Bonke, Sten

1997-01-01

The report reviews the development projects and the results hitherto achieved by the design and build organisation CASA NOVA which is one of four consortia within the R&D programme "Process and Product Development in Building", financed by the Ministry of Industry and the Ministry of Housing....

O papel dos Serviços de Informações no Combate ao Ciberterrorismo: O Caso Português

OpenAIRE

Amaral, Sandra

2014-01-01

Quase sem nos apercebermos, a nossa vida em sociedade foi-se transferindo para um novo domínio, o ciberespaço, para onde também migraram todas essas estruturas que suportam o normal funcionamento dos Estados. À conta de um simples clique, deparam-se-nos facilidades e rapidez na resolução de situações e problemas do nosso quotidiano e no acesso à informação e ao conhecimento, abrindo-se novas oportunidades para o estabelecimento de novas relações interpessoais e de negócios. Estas facilidades ...

Oportunidades tecnológicas e estratégias concorrenciais de gestão ambiental: o uso sustentável da biodiversidade brasileira Technological opportunities and competitive strategies of environmental management: the sustainable use of the Brazilian biodiversity

Directory of Open Access Journals (Sweden)

Ana Flávia Portilho Ferro

2006-12-01

Full Text Available A biodiversidade tem sido apontada como um elemento de importância estratégica devido, entre outros fatores, ao seu potencial como fornecedora de matéria-prima para diversos setores da economia. Diante deste quadro, mas também do de destruição deste patrimônio, têm se inserido muitas das atuais estratégias de empresas, as quais vêm procurando acompanhar e aproveitar o desenvolvimento de novas oportunidades tecnológicas abertas pelos mercados de produtos obtidos de forma ambientalmente responsável. A incorporação de modelos sustentáveis de uso dos recursos é, portanto, vista como um diferencial capaz de gerar vantagens competitivas. Dessa forma, o presente trabalho apresenta e discute de que forma algumas empresas brasileiras vêm utilizando em suas estratégias competitivas o potencial da biodiversidade como forma de criar e/ou de aproveitar novas oportunidades e explorar novos nichos de mercado, apontando as principais vantagens e limitações encontradas neste tipo de estratégia. Para tanto, traz uma análise dos casos de quatro empresas nacionais atuantes no mercado de produtos obtidos de forma sustentável nos segmentos de fitoterápicos, cosméticos, extratos naturais e de manejo florestal. Parece claro que a incorporação dos preceitos do desenvolvimento sustentável no uso da biodiversidade é uma tendência que vem se fortalecendo, principalmente em setores altamente dependentes de matéria-prima advinda da biodiversidade. Neste contexto, destaca-se a importância da geração de inovações para atender à demanda por novas práticas e tecnologias, assim como da conformação de um ambiente institucional capaz de estimular a incorporação da variável ambiental por todo o setor produtivo.Biodiversity has been considered a strategic element due to, among other reasons, its potential as a raw material provider to many industry sectors. Nevertheless, the increasing degradation of the environment threatens this potential

Actuaciones educativas para la convivencia en centros con alumnado inmigrante

Directory of Open Access Journals (Sweden)

Alejandro Martínez González

2012-01-01

Full Text Available En el presente artículo se muestran los resultados del trabajo de campo llevado a cabo en 11 centros educativos en el proyecto p lan n acional i +D+ i (2008-2011: La mejora de la convivencia y el aprendizaje en los centros educativos de primaria y secundaria con alumnado inmigrante , donde a partir de diferentes actuaciones educativas (no segregación en grupos específicos, organización de actividades de acogida, asambleas de grupo, Círculos de Convivencia o participación de familiares que se están llevando a cabo, se está contribuyendo a la mejora de la convivencia entre el alumnado, las familias y las y los profesionales del centro educativo.

Non-LTE model atmosphere analysis of Nova Cygni 1992

Science.gov (United States)

Hauschildt, P. H.; Starrfield, S.; Austin, S.; Wagner, R. M.; Shore, S. N.; Sonneborn, G.

1994-01-01

We use spherically symmetric non-local thermodynamic equilibrium (non-LTE), line-blanketed, expanding model atmospheres to analyze the International Ultraviolet Explorer (IUE) and optical spectra of Nova Cygni 1992 during the early phases of its outburst. We find that the first IUE spectrum obtained just after discovery on 1992 February 20, is best reproduced by a model atmosphere with a steep density gradient and homologous expansion, whereas the IUE and optical spectra obtained on February 24 show an extended, optically thick, wind structure. Therefore, we distinguish two phases of the early evolution of the nova photosphere: the initial, rapid, 'fireball' phase and the subsequent, much longer, optically thick 'wind' phase. The importance of line-blanketing in nova spectra is demonstrated. Our preliminary abundance analysis implies that hydrogen is depeleted in the ejecta, corresponding to abundance enhancements of Fe by a factor of approximately 2 and of CNO by more than a factor of 10 when compared to solar abundances. The synthetic spectra reproduce both the observed pseudo-continua as well as most of the observed features from the UV to the optical spectral range and demonstrate the importance of obtaining nearly simultaneous UV and optical spectra for performing accurate analyses of expanding stellar atmospheres (for both novae and supernovae).

Nova Ophiuchus 2017 as a Probe of 13C Nucleosynthesis and Carbon Monoxide Formation and Destruction in Classical Novae

Science.gov (United States)

Joshi, Vishal; Banerjee, D. P. K.; Srivastava, Mudit

2017-12-01

We present a series of near-infrared spectra of Nova Ophiuchus 2017 in the K band that record the evolution of the first overtone CO emission in unprecedented detail. Starting from 11.7 days after maximum, when CO is first detected at great strength, the spectra track the CO emission to +25.6 days by which time it is found to have rapidly declined in strength by almost a factor of ∼35. The cause for the rapid destruction of CO is examined in the framework of different mechanisms for CO destruction, namely, an increase in photoionizating flux, chemical pathways of destruction, or destruction by energetic nonthermal particles created in shocks. From LTE modeling of the CO emission, the 12C/13C ratio is determined to be 1.6 ± 0.3. This is consistent with the expected value of this parameter from nucleosynthesis theory for a nova eruption occuring on a low mass (∼ 0.6 {M}ȯ ) carbon–oxygen core white dwarf. The present 12C/13C estimate constitutes one of the most secure estimates of this ratio in a classical nova.

Soft x-ray emission from classical novae in outburst

International Nuclear Information System (INIS)

Starrfield, S.; Krautter, J.; MacDonald, J.

1989-01-01

Theoretical modeling of novae in outburst predicts that they should be active emitters of radiation at soft x-ray wavelengths twice during their outburst. The first time occurs very early in the outburst when only a very sensitive all sky survey will be able to detect them. This period lasts only a few hours for the very fastest novae. They again become bright in x-rays late in the outburst when the remnant object becomes very hot and is still luminous. Both simulations and observations show that novae can remain very hot for months to years. It is important to observe them at these late times because a measurement both of the flux and temperature can provide information about the mass of the white dwarf, the turn-off time scale, and the energy budget of the outburst. 8 refs., 2 figs

A multiwavelength study of superoutbursts in dwarf novae

International Nuclear Information System (INIS)

Woerd, H.J. van der.

1987-01-01

Dwarf novae are stellar systems consisting of two stars which orbit around each other within a few hours. In dwarf novae one of the stars, which is a bit smaller and less massive than our sun, loses matter to a very compact and degenerated star: a white dwarf. This white dwarf has nearly the same mass as our sun but its radius is about a hundred times smaller. The process of mass transport was studied on the basis of observations with the Exosat-satelite (European X-ray Observatory satelite). 397 refs.; 50 figs.; 21 tabs

On the late-type components of slow novae and symbiotic stars

International Nuclear Information System (INIS)

Allen, D.A.

1980-01-01

It is argued that the various types of symbiotic stars and the slow novae are the same phenomena exhibiting a range of associated time-scales, the slow novae being of intermediate speed. Evidence is summarized showing that both types of object contain normal M giants or mira variables. This fact is at odds with currently fashionable single-star models for slow novae, according to which the M star is totally disrupted before the outburst. Spectral types of the late-type components are presented for nearly 80 symbiotic stars and slow novae, derived from 2 μm spectroscopy. It is found that both the intensity of the emission spectrum and the electron density of the gas are functions of the spectral type of the late-type star. Explanations for these correlations are given. On the assumption that the late-type components are normal giants, spectroscopic parallaxes are determined; credible distances are derived which indicate that the known symbiotic stars have been sampled as far afield as the Galactic Centre. Hydrogen shell flashes on a white dwarf accreting gas from the late-type components offer an attractive explanation of the phenomena of slow novae and symbiotic stars, and such models are discussed in the concluding section. (author)

Educação Médica nos Tempos Modernos

Directory of Open Access Journals (Sweden)

Luiz Carlos Lobo

Full Text Available O artigo enfatiza o aprendizado do aluno e a flexibilização do processo educacional, em regra muito centrado no professor. Propõe o desenvolvimento e a oferta, via internet, de módulos autoinstrucionais sobre a fisiologia e fisiopatologia dos vários sistemas orgânicos, enfatizando sua relação com a clínica, a discussão dos principais agravos à saúde da população e a interação do homem com seu meio físico, biológico e social. Tais módulos poderiam atuar como oportunidades de aprendizagem supletiva e núcleo de discussão dos temas por alunos e professores. Propõe a adoção de uma pedagogia híbrida, em que o aluno teria acesso ao conhecimento via internete a oportunidade de aplicá-lo na solução de problemas de saúde de uma população. Admitindo a limitação da formação profissional desenvolvida apenas no hospital de ensino, o autor propõe a participação ativa e comprometida dos alunos, sob supervisão permanente, nos vários níveis de atenção à saúde, atuando na comunidade, unidades de saúde da família, centros integrados de saúde, hospitais secundários e regionais. Essa proposta é particularmente oportuna no momento em que se cogita a criação de novas escolas de Medicina no País.

Estudio fisiológico de larvas de peces: retos y oportunidades

OpenAIRE

Burggren, Warren; Blank, Tara

2009-01-01

Los estudios de fisiología en larvas de peces, están mucho más atrasados que los de peces adultos, sin embargo ofrecen enormes oportunidades para ampliar nuestro conocimiento sobre la biología básica de peces marinos y de agua dulce. Éstos también pueden mejorar la investigación y gestión en ciertas áreas de la ciencia aplicada, como la acuicultura, pesquerías y estudios ambientales. además, las larvas de peces pueden ser eficaces como modelos animales para comprender la evolución, el desar...

An Emerging Wine Region in Nova Scotia, Canada: Terroir Trials and Tribulations

Science.gov (United States)

Cameron, B. I.; Ketter, B. S.; Karakis, S.

2012-12-01

Nova Scotia, strategically located on Canada's east coast, is an emerging wine region, whose distinctive wines are garnering international acclaim. Nova Scotia has a long and rich tradition of growing grapes for wine dating back as far as 1611. Nova Scotia's mesoclimates, glacial soils, and proximity to the Atlantic Ocean form a complex alliance to create a unique and expressive terroir. Tidal Bay is a new appellation wine for Nova Scotia stylistically defined as a fresh, crisp and high-acid blend of white grapes. There are four main wine-growing regions in Nova Scotia, all influenced by the warming effects of the Bay of Fundy and Atlantic Ocean: Malagash Peninsula, Annapolis Valley, Bear River Valley and the South Shore. Nova Scotia currently has 14 producing wineries with many more in the development stage. Nova Scotia grape growers not only have had success developing mature and consistent hybrids, but in recent years several vinifera have flourished in this cool climate area. The white hybrids include L'Acadie Blanc, New York Muscat, Seyval Blanc, and Vidal Blanc. The white vinifera include chardonnay, riesling, pinot gris, and sauvignon blanc. Red hybrids are Baco Noir, Leon Millet, Lucie Kuhlmann, and Marechal Foch, whereas the only red vinifera is pinot noir. Nova Scotia has nearly perfect climatic conditions for making world class icewines and sparkling wines. A preliminary GIS analysis of climate, topographic, geology and soil data helps to define Nova Scotia's terroir. Annual precipiatation varies from 10 to 21.6 cm/year with a vast majority of the wineries located in regions with the lowest rainfall. Daily average temperature ranges from 5.5 to 7.5°C, degree growing days above 5°C from 1382 to 1991, and mean August temperature from 15.6 to 19.3 °C. Wineries cluster in the warmest regions based on these temperature measures to assist grape ripening. Soils in these diverse wine regions can range from silty, sandy and clay loams to more gravel-rich sandy

IMPLICAÇÕES DE UM CENTRO DE SERVIÇOS COMPARTILHADOS NA CONTABILIDADE GERENCIAL: UMA ABORDAGEM INSTITUCIONAL

Directory of Open Access Journals (Sweden)

Ilse Maria Beuren

Full Text Available RESUMO Este estudo analisa, sob a abordagem institucional, as implicações da implantação de um Centro de Serviços Compartilhados (CSC nas funções da Contabilidade Gerencial. Para tal, foi realizada uma pesquisa de natureza descritiva com abordagem qualitativa, a partir de um estudo de caso em empresa situada na região Sul do Brasil, constituída sob a forma de um CSC. Sob a lente da Teoria Institucional, consubstanciada no modelo proposto por Burns e Scapens (2000, foi analisada a institucionalização de regras e rotinas na Contabilidade Gerencial da empresa. Os resultados da pesquisa mostram que a implantação do CSC teve implicações diretas e indiretas nas funções da Contabilidade Gerencial, visto que foi necessário alterar várias de suas funções, atividades, divisionalizações, inclusive profissionais, portanto, uma reestruturação ampla e profunda em todo o setor. Quanto às dicotomias de mudanças ocorridas com a implantação do CSC, foram observadas mais mudanças formais do que informais, evolucionárias do que revolucionárias e progressivas do que regressivas nas funções da Contabilidade Gerencial. Conclui-se com base na análise triangulada dos dados coletados, que a implantação do CSC na empresa pesquisada teve implicações significativas na estrutura organizacional e na natureza das funções da Contabilidade Gerencial, as quais resultaram na institucionalização de novas regras e rotinas nos moldes preconizados por Burns e Scapens (2000. Os resultados do estudo contribuem para o desenvolvimento de novos papéis na Contabilidade Gerencial, sob o argumento que o modelo de CSC gerou novas regras e rotinas em toda a corporação, com implicações diretas e indiretas nos papéis gerenciais institucionalizados.

ASASSN-18gb: Discovery of A Probable Nova in NGC 3109

Science.gov (United States)

Brimacombe, J.; Vallely, P.; Stanek, K. Z.; Kochanek, C. S.; Brown, J. S.; Shields, J.; Thompson, T. A.; Shappee, B. J.; Holoien, T. W.-S.; Prieto, J. L.; Bersier, D.; Dong, Subo; Bose, S.; Chen, Ping; Stritzinger, M.; Holmbo, S.

2018-03-01

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN, Shappee et al. 2014), using data from the quadruple 14-cm "Payne-Gaposchkin" telescope in Sutherland, South Africa, we discovered a new transient source, most likely a nova, in the Local Group galaxy NGC 3109.

Does alleviating poverty affect mothers’ depressive symptoms? A quasi-experimental investigation of Mexico’s Oportunidades programme

OpenAIRE

Ozer, Emily J; Fernald, Lia CH; Weber, Ann; Flynn, Emily P; VanderWeele, Tyler J

2011-01-01

Background Depression is a major cause of disability, particularly among women; poverty heightens the risk for depression. Beyond its direct effects, maternal depression can harm children’s health and development. This study aimed to assess the effects of a large-scale anti-poverty programme in Mexico (Oportunidades) on maternal depressive symptoms.

Measurement of Reactions on 30P for Nova Nucleosynthesis

Science.gov (United States)

Ma, Z.; Guidry, M. W.; Hix, W. R.; Smith, M. S.

2003-05-01

Replace these paragraphs with your abstract. We encourage you to include a sentence acknowledging your funding agency. In a recent study the 30P(p,gamma)31S rate played a crucial role in the synthesis of heavier nuclear species, from Si to Ca, in nova outbursts on ONe White Dwarfs [1]. The adopted rate of this reaction, based on a Hauser-Feshbach calculation [2], has a large uncertainty and could be as much as a factor of 100 too high or too low [3]. In their study, Jose et al.[1] varied the 30P(p,gamma)31S reaction rate within this uncertainty and found that, when rate is reduced by a factor of 100, the synthesis of elements above Si is lowered by a factor 10 with respect to the values found with the nominal rate. This has important consequences for nova nucleosynthesis, as overproduction of isotopes in the Si to Ca mass region has been observed in the ejecta from some nova explosions (e.g.,[4,5]). While generally valid at higher temperatures, Hauser-Feshbach calculations of the rates at nova temperatures can have large uncertainties. At these temperatures, the rate is more likely dominated by a few individual nuclear resonances. At present there are about 10 31S resonances known above the 30P + p threshold that may contribute to the 30P(p,gamma)31S reaction rate at nova temperatures. The excitation energies of these levels are known but spins and parities (for all but two) are not. We plan to measure the 30P(p,p)30P and 30P(p,gamma)31S reactions at HRIBF to better determine this reaction rate. A detailed description of the experiments will be given. We are also conducting a new nova nucleosynthesis simulation over multiple spatial zones of the exploding envelope to investigate the influence of the 30P(p,gamma)31S reaction rate on nova nucleosynthesis. The results of these calculations will be discussed. 1. Jose , J., Coc, A., Hernanz, M., Astrophys. J., 560, 897(2001). 2. Thielemann, F.-K et al., 1987, Advances in Nuclear Astrophysics, ed. E. Vangioni-Flam ( Gif

El centro cultural: Una puerta abierta a la memoria

Directory of Open Access Journals (Sweden)

Marcela Alejandra País Andrade

2006-12-01

Full Text Available En este artículo, describimos y analizamos las actividades culturales/recreativas ofrecidas en los centros culturales dependientes del Programa Cultural en Barrios, como formas posibles de usos de la/las memoria/s para representar el pasado. Responden a un contexto macro, el Centro Cultural, cristalizando una política pública-cultural (el Programa Cultural en Barrios como una de las diferentes formas por medio de las cuales, el Estado administra el recuerdo colectivo. Nos centramos en las actividades culturales/recreativas que realizan los jóvenes de sectores medios, en tres de estos centros culturales. Paralelamente, reflexionamos cómo significan sus estilos de vida a través de estas prácticas realizadas en su tiempo libre y vinculadas al consumo cultural hegemónico relacionado a las políticas culturales. Para ello, se han entrevistado coordinadores y promotores culturales, jóvenes de 18 a 24 años que realizan alguna actividad cultural/recreativa. Se han analizado encuestas, escritos y archivos generados por los Centros y por el Programa.Neste artigo nós descrevemos e analisamos as atividades culturais/de lazer oferecidas nos Centros culturais dependentes do Programa Cultural nos Bairros, como formas possíveis de usos da/s memória/s para representar o passado. Respondendo a um contexto mais amplo, o Centro Cultural, cristalizando uma política público-culturais (o Programa Cultural nos Bairros como uma das diferentes formas por médio das quais o Estado administra a memória coletiva. Nós colocamos a atenção nas atividades culturais/de lazer que realizam os jovens de setores médios em três centros culturais. Ao mesmo tempo, refletimos na forma em que eles significam seus estilos de vida através destas práticas realizadas no seu tempo livre e vinculadas ao consumo cultural hegemônico em relação às políticas culturais. Para fazer isto, nós temos entrevistado coordenadores e promotores culturais, jovens de 18 à 24 anos

Polarimetry and spectroscopy of the "oxygen flaring" DQ Herculis-like nova: V5668 Sagittarii (2015)

Science.gov (United States)

Harvey, E. J.; Redman, M. P.; Darnley, M. J.; Williams, S. C.; Berdyugin, A.; Piirola, V. E.; Fitzgerald, K. P.; O'Connor, E. G. P.

2018-03-01

Context. Classical novae are eruptions on the surface of a white dwarf in a binary system. The material ejected from the white dwarf surface generally forms an axisymmetric shell of gas and dust around the system. The three-dimensional structure of these shells is difficult to untangle when viewed on the plane of the sky. In this work a geometrical model is developed to explain new observations of the 2015 nova V5668 Sagittarii. Aim. We aim to better understand the early evolution of classical nova shells in the context of the relationship between polarisation, photometry, and spectroscopy in the optical regime. To understand the ionisation structure in terms of the nova shell morphology and estimate the emission distribution directly following the light curve's dust-dip. Methods: High-cadence optical polarimetry and spectroscopy observations of a nova are presented. The ejecta is modelled in terms of morpho-kinematics and photoionisation structure. Results: Initially observational results are presented, including broadband polarimetry and spectroscopy of V5668 Sgr nova during eruption. Variability over these observations provides clues towards the evolving structure of the nova shell. The position angle of the shell is derived from polarimetry, which is attributed to scattering from small dust grains. Shocks in the nova outflow are suggested in the photometry and the effect of these on the nova shell are illustrated with various physical diagnostics. Changes in density and temperature as the super soft source phase of the nova began are discussed. Gas densities are found to be of the order of 109 cm-3 for the nova in its auroral phase. The blackbody temperature of the central stellar system is estimated to be around 2.2 × 105 K at times coincident with the super soft source turn-on. It was found that the blend around 4640 Å commonly called "nitrogen flaring" is more naturally explained as flaring of the O II multiplet (V1) from 4638-4696 Å, i.e. "oxygen flaring

El Centro de Investigaciones Toxicológicas

OpenAIRE

Castro, Gerardo Daniel

2016-01-01

La vida de nuestro laboratorio es tan extensa como la mía, ¡pues ambos nacimos el mismo año! Y no son pocos los años que llevo trabajando aquí, desde 1983... Los tiempos más felices de mi actividad profesional han sido aquellos cuando los tres, mis viejos y yo, trabajábamos juntos en el CEITOX. No solamente por el placer de investigar, pensar experimentos, discutir resultados (en el laboratorio y en casa) si no también por todas aquellas oportunidades compartidas conociendo lugares hermosos e...

Logística e Atualidade - Empregando TI em Novas Oportunidades

OpenAIRE

Araujo, Jefferson Borges; UNIABEU

2011-01-01

Este trabalho apresenta inicialmente um histórico sobre a logística, seus principais objetivos e funções. São apontadas as principais dificuldades no processo de Gestão de Logística e identificada a utilização agressiva de Tecnologia da Informação como forte candidata para otimização dos processos da área de logística. São apresentados os conceitos envolvidos na técnica de Mineração de Dados – Data Mining e sua aplicação no campo da logística. São apresentadas as diversas técnicas associadas ...

Educação de adultos: novas oportunidades de literacia

Directory of Open Access Journals (Sweden)

Maria de Lourdes Dionísio

2014-04-01

Full Text Available http://dx.doi.org/10.5007/2175-795X.2014v32n1p21 Numa sociedade quase totalmente estruturada sobre textos escritos, as práticas de literacia com que os indivíduos têm de se envolver diariamente são diferentes ordens e complexidades. A crença de que a participação no mundo da escrita depende apenas do domínio de habilidades específicas de compreensão (principalmente e de produção de textos tem vindo a ser teórica e empiricamente desconstruída, particularmente no contexto do que tem vindo a ser chamado Novos Estudos de Literacia, que advogam a literacia como um conjunto de práticas sociais, histórica e culturalmente situadas, onde têm lugar eventos mediados por textos. Esta mesma perspetiva coloca sob escrutínio o que conta como literacia e, ao fazê-lo, a relação entre literacias institucionais ou dominantes e as pessoais ou vernáculas. Dessa forma, neste texto apresentamos alguns resultados de um estudo realizado junto de adultos que frequentaram processos de Reconhecimento, Validação e Certificação de Competências (RVCC, cujo principal objetivo foi compreender de que modo este processo educacional contribui para a transformação de identidades letradas. Os dados foram obtidos por questionário junto de 113 adultos, por recolha de documentos, e por entrevista. Da análise e cruzamento da informação obtida pode-se concluir o alargamento dos repertórios de práticas de literacia, por parte destes adultos tidos como “iletrados”, mas também de outras transformações nas suas identidades letradas, nomeadamente os seus ‘novos’ posicionamentos face às suas práticas vernáculas.

Catálisis en Colombia: Estado actual y oportunidades para el futuro

OpenAIRE

Henao López, Juan David; Montes de Correa, Consuelo

2002-01-01

En este artículo se hace una revisión del estado actual de la catálisis en Colombia. Se empieza con una reseña sobre las tendencias mundiales en aspectos relacionados con la química y el medio ambiente, mostrando cómo dichas tendencias han influido en la investigación sobre Catálisis que se realiza en Colombia. Luego se plantean algunos retos que surgen de las necesidades de la industria nacional resaltando una serie de oportunidades, previamente identificadas, para el desarrollo de tecnologí...

Upgrade of the LLNL Nova laser for inertial confinement fusion

International Nuclear Information System (INIS)

Murray, J.R.; Trenholme, J.B.; Hunt, J.T.; Frank, D.N.; Lowdermilk, W.H.; Storm, E.

1991-01-01

The Lawrence Livermore National Laboratory has proposed to construct an upgrade to the Nova glass laser facility to give an output energy of 1.5-2 megajoules at 350 nanometers wavelength in a nominally 3--5 nanosecond shaped pulse. The Nova Upgrade will be suitable for driving inertial fusion targets to ignition. This paper reviews the design proposed for the laser. 14 refs., 10 figs., 1 tab

Productos del sector agrícola colombiano y derivados que tienen oportunidad de ser vendidos en el mercado de la Federación Rusa

OpenAIRE

Camacho Ferro, Juan Diego

2016-01-01

Este trabajo tuvo como fin identificar los productos del sector agrícola colombiano y derivados que tienen oportunidad de ser vendidos en el mercado de la Federación Rusa. Esto con el objetivo de tener un documento para los exportadores colombianos donde puedan consultar las oportunidades de negocio que tiene el sector y que pueden ser explotadas. El trabajo se adelantó mediante la consulta de fuentes de información terciaria, como los sitios web de distintas asociaciones, información de los...

Atividades de enfermagem em centro de material e esterilização: contribuição para o dimensionamento de pessoal Actividades de enfermería en centro de material y esterilización: contribución para el tamaño del personal Nursing activities in central supply and sterilization: a contribution to personnel design

Directory of Open Access Journals (Sweden)

Janaína Anchieta Costa

2011-01-01

Full Text Available OBJETIVOS: Identificar e validar as atividades realizadas pela equipe de enfermagem em Centros de Material e Esterilização, como subsídio para definição da carga de trabalho da unidade. MÉTODOS: A identificação das atividades ocorreu, mediante consulta às indicações formuladas pelos órgãos oficiais, bem como levantamento bibliográfico sobre o assunto. Na validaç��o das atividades identificadas, foi utilizado o método da Validade de Conteúdo, aplicando-se a Técnica Delphi. RESULTADOS: Participaram como juízas 11 enfermeiras que atuavam em Centros de Material e Esterilização. Os comentários e sugestões realizados na primeira fase da Técnica Delphi, determinaram alterações no conteúdo do quadro de atividades, que foram submetidas à nova avaliação do grupo, resultando na validação de seis áreas de trabalho, 25 subprocessos, 110 atividades e 25 atividades específicas da enfermeira. CONCLUSÃO: Com esta pesquisa evidenciam-se perspectivas para a realização de novas investigações que contribuam para a determinação de parâmetros que subsidiem o processo de dimensionar pessoal de enfermagem nestas unidades.OBJETIVOS: Identificar y validar las actividades realizadas por el equipo de enfermería en Centros de Material y Esterilización, como subsidio para la definición de la carga de trabajo de la unidad. MÉTODOS: La identificación de las actividades se llevó a cabo mediante la consulta a las indicaciones formuladas por los órganos oficiales, así como por el levantamiento bibliográfico sobre el asunto. En la validación de las actividades identificadas, se utilizó el método de Validez de Contenido, aplicándose la Técnica Delphi. RESULTADOS: Participaron como jueces 11 enfermeras que trabajaban en Centros de Material y Esterilización. Los comentarios y sugerencias realizadas en la primera fase de la Técnica Delphi, determinaron alteraciones en el contenido del cuadro de actividades, que fueron

Optical polarimetry and distance estimate for Nova Cygni 1975

Energy Technology Data Exchange (ETDEWEB)

McLean, I S [Glasgow Univ. (UK). Observatory

1976-07-01

Polarization observations of Nova Cygni 1975 were obtained with several passbands in the wavelength interval lambda lambda 4600 to 6700 A before and after maximum light. Special attention was given to the regions of H..cap alpha.. and H..beta.. emission. On average, a precision of +- 0.04 per cent polarization was obtained in these observations. Statistically significant evidence for the presence of an intrinsically-polarized component in the light from the nova is very weak, but such a component is not completely ruled out. Any variability, however, is likely to be less than 0.18 per cent polarization. The observed polarization (1.38 per cent at lambda 5460), is therefore attributed mainly to scattering in the interstellar medium and the amount of polarization is employed to give a rough estimate of the distance of the nova and its absolute magnitude at maximum brightness, namely 1.14 kpc and -10sup(m).1.

Estudio de casos sobre la diversidad cultural en centros de secundaria de Granada.

Directory of Open Access Journals (Sweden)

Antonio RODRÍGUEZ FUENTES

2016-06-01

Full Text Available El estudio de las actitudes sobre la diversidad cultural en los centros de secundaria se presenta en la actualidad como un frente candente en la investigación educativa. Es sabido que uno de los aspectos que caracterizan la Escuela en la actualidad es la presencia de una diversidad social y cultural. De una parte, la diversidad social hace referencia a la forma en que se distribuyen la riqueza y las oportunidades en la sociedad. Con la diversidad cultural se hace alusión, sobre todo, a la interacción entre personas de diferentes procedencias y culturas. El compendio de esta diversidad en la Escuela genera nuevas necesidades y exige que el Sistema Educativo busque satisfacerlas.Por ello, toda acción educativa debe girar en torno al respeto y la confianza y ello, en ocasiones, no resulta fácil para la convivencia diaria entre el alumnado de diferentes culturas y el resto de alumnos y agentes educativos. Así que se hace necesaria la puesta en marcha de estrategias y medidas que intenten conseguir ese respeto y enriquecimiento entre culturas, tanto en la escuela como en la sociedad. En este trabajo se realiza un estudio que pone de manifiesto las actitudes que se tienen y que repercuten en la dinámica educativa, de cara a estudiar las estrategias y medidas anteriores. Se estructura en varias partes: fundamentación teórica, la metodología y el trabajo empírico, seguido de las conclusiones y futuro de la investigación, que por analogía con la acción teatral, fechada desde su origen en el Renacimiento, se han denominado «actos» (o grandes bloques y sus correspondientes «episodios» (o capítulos: 

Outbursts of symbiotic novae

International Nuclear Information System (INIS)

Kenyon, S.J.; Truran, J.W.

1983-01-01

We discuss possible conditions under which thermonuclear burning episodes in the hydrogen-rich envelopes of accreting white dwarfs give rise to outbursts similar in nature to those observed in the symbiotic stars AG Peg, RT Ser, RR Tel, AS 239, V1016 Cyg, V1329 Cyg, and HM Sge. In principle, thermonuclear runaways involving low-luminosity white dwarfs accreting matter at low rates produce configurations that evolve into A--F supergiants at maximum visual light and which resemble the outbursts of RR Tel, RT Ser, and AG peg. Very weak, nondegenerage hydrogen shell flashes on white dwarfs accreting matter at high rates (M> or approx. =10 -8 M/sub sun/ yr -1 ) do not produce cool supergiants at maximum, and may explain the outbursts in V1016 Cyg, V1329 Cyg, and HM Sge. The low accretion rates demanded for systems developing strong hydrogen shell flashes on low-luminsoity white dwarfs are not compatible with observations of ''normal'' quiescent symbiotic stars. The extremely slow outbursts of symbiotic novae appear to be typical of accreting white dwarfs in wide binaries, which suggests that the outbursts of classical novae may be accelerated by the interaction of the expanding white dwarf envelope with its close binary companion

Propuesta de un Modelo de Planificación y Organización para Implementación de Centros de Servicios tecnológicos en Instituciones Educativas Públicas

Directory of Open Access Journals (Sweden)

Santiago Cordovilla

2015-05-01

Full Text Available Las TIC brindan la oportunidad de expandir el acceso a la educación, fortalecer la educación digital, y elevar la calidad educativa, permitiendo que la enseñanza y el aprendizaje sean un proceso continuo y cotidiano. No obstante integrar efectivamente las TIC en el sistema educativo es un proceso complejo que implica revisión del currículo y pedagogía, las competencias docentes y el financiamiento. En Ecuador se experimenta un avance tecnológico, principalmente por el acceso a la información y comunicación. En la última década la extensión de la Internet permite que las TIC alcancen su mayor popularidad hasta el presente sin ser aún suficiente. Con el fin de reducir el desconocimiento de las TIC principalmente en la población en edad escolar se plantea un modelo en el que se estructura un enfoque lógico para el diseño de Centros de Servicios Tecnológicos (CST que tendrían como objetivo proporcionar beneficios tecnológicos a población estudiantil.

NuSTAR Observations of Fermi-detected Novae, V339 Delphini and V5668 Sagitarii

Science.gov (United States)

Mukai, K.; Nelson, T.; Sokoloski, J.; Chomiuk, L.; Finzell, T.; Linford, J.; Weston, J.; Rupen, M.; Mioduszewski, A.

2017-10-01

Ten Galactic novae have been detected as transient GeV gamma-ray sources with Fermi/LAT to date, presumably due to shock acceleration that produces relativistic particles. This unexpected discovery highlights the complexity of the mass ejection process in novae. It has also added a new class of objects in which particle acceleration can be studied. We can in principle study the same shock in X-rays through their thermal emission and the lower energy extension of the non-thermal emission. Here we present our NuSTAR observations of two Fermi-detected novae, V339 Del and V5668 Sgr, that were carried out while they were being detected with the LAT. We did not detect thermal or non-thermal emissions from these novae. Our results place a tight limit on the properties of the putative shocks in V339 Del and V5668 Sgr. We also compare our results with previous reports of possible detection of non-thermal hard X-rays from novae, and discuss the implications in the context of our current understanding of the complicated process of mass ejection in novae.

High Energy Neutrino Physics with NOvA

Energy Technology Data Exchange (ETDEWEB)

Coan, Thomas [Southern Methodist Univ. , Dallas, TX (United States)

2016-09-09

Knowledge of the position of energy deposition in “hit” detector cells of the NOvA neutrino detector is required by algorithms for pattern reconstruction and particle identification necessary to interpret the raw data. To increase the accuracy of this process, the majority of NOvA's 350 000 far detector cell shapes, including distortions, were measured as they were constructed. Using a special laser scanning system installed at the site of the NOvA far detector in Ash River, MN, we completed algorithmic development and measured shape parameters for the far detector. The algorithm and the measurements are “published” in NOνA’s document database (doc #10389, “Cell Center Finder for the NOνA Far Detector Modules”).

NOVA[R] Spring 2002 Teacher's Guide.

Science.gov (United States)

Armstrong, Peter; Ransick, Kristi; Rosene, Dale; Sammons, James

The guide presents lesson plans from "NOVA" which targets middle school and junior high school students and meet the National Science Education Standards. Lessons include: (1) "Neanderthals on Trial"; (2) "Fireworks"; (3) "Secrets, Lies and Atomic Spies"; (4) "Bioterror"; (5) "The Missing…

Emergencias y desastres: desafíos y oportunidades (de la casualidad a la causalidad

Directory of Open Access Journals (Sweden)

Nelson Morales-Soto

2008-04-01

Full Text Available El Perú es un país donde han ocurrido y seguirán ocurriendo desastres naturales, el último terremoto sucedido en Pisco demuestra que el afrontar los desastres continúa como un gran desafío para nuestro sistema de salud. En este artículo se revisan los avances, desafíos y recomendaciones para aprovechar las oportunidades y mejorar la gestión del riesgo.

Theoretical and observational review of results on nova explosions occurring on ONeMg white dwarfs

International Nuclear Information System (INIS)

Starrfield, S.

1986-01-01

The nova outburst is the second most violent explosion that occurs in a galaxy. This review presents the recent observational and theoretical studies that have demonstrated that there exist two classes of nova outburst. One type of nova occurs on a CO white dwarf and the other type of nova occurs on an ONeMg white dwarf. The second class of outbursts are much more violent and occur much more frequently then the first class of outbursts. Hydrodynamic simulations of both kinds of outbursts are in excellent agreement with the observations. 51 refs

Calidad percibida por dos poblaciones adscritas a dos centros de salud de la provincia de Cuenca

Directory of Open Access Journals (Sweden)

Retamal González Antonio

2000-01-01

Full Text Available FUNDAMENTO: Para prestar un servicio de calidad es fundamental conocer la opinión que sobre la misma tienen los usuarios del mismo. El objetivo del presente trabajo es medir y comparar la calidad percibida por dos poblaciones asignadas a dos centros de salud de la provincia de Cuenca. MÉTODO: Se trata de un estudio descriptivo transversal. Las Zonas Básicas de Salud estudiadas han sido el Centro de Salud de Cardenete y Centro de Salud de Motilla del Palancar, ambos del Área de Salud de Cuenca. Se ha hecho un muestreo aleatorio estratificado por cuotas de edad y sexo a partir de la tarjeta sanitaria individual. Se ha medido la calidad percibida con un cuestionario validado y fiable, utilizado anteriormente con fines similares por el Ministerio de Sanidad y Consumo. RESULTADOS: Se analizan un total de 295 encuestas, 147 a varones y 148 a mujeres. La media de edad es de 48,83 años (DE: 18,77 para el Centro de Salud de Motilla, en Centro de Salud de Cardenete es de 61,93 años (DE: 15,17. La media de frecuencias mensuales de visitas para Centro de Salud de MP ha sido de 1,56 (DE: 1,91; esta media para el Centro de Salud de Cardenete ha sido:2,49 (DE: 4,27. La media de frecuencias semanales para el Centro de Salud de MP ha sido: 0,32 (DE: 0,66; para el Centro de Salud de Cardenete ha sido: 0,49 (DE: 1,03. El tiempo de espera en el Centro de Salud de MP ha sido: 10,86 minutos (DE: 8,27; en el Centro de Salud de Cardenete: 7,88 (DE: 4,55. 83,4 % de los usuarios de los dos Centros de Salud de conocen la posibilidad de libre elección de médico de cabecera. Se han encontrado diferencias estadísticamente significativas en 11 de los 21 ítems estudiados sobre calidad percibida de que consta el cuestionario CONCLUSIÓN. Los resultados de los componentes de la atención según el análisis factorial de los ítems de calidad percibida son coincidentes con los resultados de calidad percibida. De los dos grupos de usuarios estudiados, los que perciben

Discovery of an old nova shell surrounding the cataclysmic variable V1315 Aql

Science.gov (United States)

Sahman, D. I.; Dhillon, V. S.; Littlefair, S. P.; Hallinan, G.

2018-04-01

Following our tentative discovery of a faint shell around V1315 Aql reported in Sahman et al. (2015), we undertook deep Hα imaging and intermediate-resolution spectroscopy of the shell. We find that the shell has its geometric centre located on V1315 Aql. The mass, spectral features and density of the shell are consistent with other nova shells, rather than planetary nebulae or supernova remnants. The radial velocity of the shell is consistent with the systemic velocity of V1315 Aql. We believe this evidence strongly suggests that the shell originates from an earlier nova event. This is the first nova shell discovered around a novalike, and supports the theory of nova-induced cycles in mass transfer rates (hibernation theory) first proposed by Shara et al. (1986).

High density implosion experiments at Nova

International Nuclear Information System (INIS)

Cable, M.D.; Hatchett, S.P.; Nelson, M.B.; Lerche, R.A.; Murphy, T.J.; Ress, D.B.

1994-01-01

Deuterium filled glass microballoons are used as indirectly driven targets for implosion experiments at the Nova Laser Fusion Facility. High levels of laser precision were required to achieve fuel densities and convergences to an ignition scale hot spot. (AIP) copyright 1994 American Institute of Physics

5. Neuromarketing: uma nova disciplina acadêmica?

Directory of Open Access Journals (Sweden)

Eric David Cohen

2017-12-01

Full Text Available Através da aplicação de técnicas neurocientíficas, o Neuromarketing busca entender como ocorrem os processos de decisão de compra. Verifica-se que há um grande movimento em torno do Neuromarketing no ambiente empresarial, apontando que o desenvolvimento desta nova área de conhecimento, bem como a sua possível autonomia, estão em desenvolvimento. Por meio de um estudo exploratório, mapeou-se a construção deste campo de conhecimento no tempo, levando à formação de uma possível nova disciplina científica e acadêmica, assim como verificar a sua origem interdisciplinar. Ademais, apresenta-se a construção de um mapa a partir de dados secundários, de modo a demonstrar a percepção da história e das contribuições potenciais do Neuromarketing, a partir de uma análise da produção científica na área. A partir de um conjunto de dados levantados, conclui-se que existe uma dinâmica de construção do Neuromarketing em torno dos diferentes atores na academia e nos negócios, levando à formulação de hipóteses quanto à maturidade desta nova disciplina acadêmica.

ECONOMIA SOCIAL INCORPORATIVA (e as novas linguagens

Directory of Open Access Journals (Sweden)

Welinton dos Santos

2017-05-01

Full Text Available A inovação tecnológica aliada à interação de comunicação sem limites, chamada de “Economia Social Incorporativa”, sendo uma rede integrada e sociável as populações do mundo. Baseada em uma pesquisa bibliográfica de caráter qualitativo e documental mostrando que a comunicação, informações e tecnologias evoluem surgindo novos materiais em destaque o grafeno, composto por átomos de carbono com alta condutividade térmica e elétrica, flexível e resistente, material que pode substituir o silício e permitir a segunda revolução tecnológica e levando consigo a economia. Com esses feitos tecnológicos a humanidade tende a estar mais do que nunca com uma ligação inseparável das novas tecnologias que vem aparecendo de forma exponencial no mercado estimulando assim mais do que nunca a economia social. O futuro visa uma nova economia que está em transformação, provocando mudanças significativas na política econômica mundial, e por isso, todos os esforços nesta nova dinâmica de conscientização do comportamento social integrativo auxilia numa política estratégica global mais justa e igualitária.

Novas espécies de Diplusodon Pohl (Lythraceae do Planalto Central e Estado de Minas Gerais, Brasil New species of Diplusodon Pohl (Lythraceae from Central Brazil and Minas Gerais State

Directory of Open Access Journals (Sweden)

Taciana Barbosa Cavalcanti

2007-12-01

Full Text Available (Novas espécies de Diplusodon Pohl (Lythraceae do Planalto Central e Estado de Minas Gerais, Brasil. Quatro novas espécies são descritas e ilustradas para o gênero Diplusodon, que se somam ao alto número de espécies registradas para este gênero no Cerrado brasileiro, mais especificamente para as montanhas que formam a Serra Geral do Paraná, ou Serra Geral de Goiás, reafirmando a região como centro de diversidade genética do gênero. As seguintes espécies são descritas: Diplusodon capitalensis, do Distrito Federal e Goiás, D. chapadensis e D. grahamae, de Goiás, e D. rupestris, de Minas Gerais.(New species of Diplusodon Pohl (Lythraceae from Central Brazil and Minas Gerais State. Four new species are described and illustrated for the genus Diplusodon. These are added to the already high number of species registered for the Brazilian Cerrado, more precisely in the chain of mountains that form the Serra Geral do Parana or Serra Geral de Goiás, confirming this region as the primary center of genetic diversity of the genus. The following species are described: Diplusodon capitalensis, from the Distrito Federal and Goiás, D. chapadensis and D. grahamae from Goiás, and D. rupestris, from Minas Gerais.

NOVAE WITH LONG-LASTING SUPERSOFT EMISSION THAT DRIVE A HIGH ACCRETION RATE

International Nuclear Information System (INIS)

Schaefer, Bradley E.; Collazzi, Andrew C.

2010-01-01

We identify a new class of novae characterized by the post-eruption quiescent light curve being more than roughly a factor of 10 brighter than the pre-eruption light curve. Eight novae (V723 Cas, V1500 Cyg, V1974 Cyg, GQ Mus, CP Pup, T Pyx, V4633 Sgr, and RW UMi) are separated out as being significantly distinct from other novae. This group shares a suite of uncommon properties, characterized by the post-eruption magnitude being much brighter than before eruption, short orbital periods, long-lasting supersoft emission following the eruption, a highly magnetized white dwarf (WD), and secular declines during the post-eruption quiescence. We present a basic physical picture which shows why all five uncommon properties are causally connected. In general, novae show supersoft emission due to hydrogen burning on the WD in the final portion of the eruption, and this hydrogen burning will be long-lasting if new hydrogen is poured onto the surface at a sufficient rate. Most novae do not have adequate accretion for continuous hydrogen burning, but some can achieve this if the companion star is nearby (with short orbital period) and a magnetic field channels the matter onto a small area on the WD so as to produce a locally high accretion rate. The resultant supersoft flux irradiates the companion star and drives a higher accretion rate (with a brighter post-eruption phase), which serves to keep the hydrogen burning and the supersoft flux going. The feedback loop cannot be perfectly self-sustaining, so the supersoft flux will decline over time, forcing a decline in the accretion rate and the system brightness. We name this new group after the prototype, V1500 Cyg. V1500 Cyg stars are definitely not progenitors of Type Ia supernovae. The V1500 Cyg stars have similar physical mechanisms and appearances as predicted for nova by the hibernation model, but with this group accounting for only 14% of novae.

ASAS-SN Discovery of a Possible Galactic Nova ASASSN-18ix

Science.gov (United States)

Stanek, K. Z.; Kochanek, C. S.; Shields, J. V.; Thompson, T. A.; Chomiuk, L.; Strader, J.; Shappee, B. J.; Holoien, T. W.-S.; Prieto, J. L.; Dong, Subo; Stritzinger, M.

2018-04-01

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN, Shappee et al. 2014), using data from multiple ASAS-SN telescopes, we detect a new bright transient source, possibly a classical nova, but it might also be a young, large amplitude outburst of a cataclysmic variable Object RA (J2000) DEC (J2000) Gal l (deg) Gal b (deg) Disc.

ANÁLISE DA SELEÇÃO DE PROJETOS DO PROGRAMA PRIMEIRA EMPRESA INOVADORA (PRIME NO CENTRO INCUBADOR DO ESTADO DE SERGIPE/BRASIL (CISE

Directory of Open Access Journals (Sweden)

Iracema Machado de Aragão Gomes

2013-09-01

Full Text Available As políticas de apoio ao empreendedorismo são fundamentais para a geração de novas empresas. No Brasil, capital semente, instalação de parques tecnológicos, programas de financiamento a juro zero e, subvenção econômica como o Programa Primeira Empresa Inovadora (PRIME são exemplos de políticas de incentivo. Para execução do PRIME, em particular, a Agência Brasileira de Inovação (FINEPdescentralizou a operacionalização para que as incubadoras de empresas pudessem selecionar os projetos inovadores. Este artigo analisa o programa PRIME do Centro Incubador de Empresas do Estado de Sergipe (CISE, após o cálculo das médias e desvio-padrão das notas obtidas pelas empresas nos fatores de inovação, potencial de mercado, retorno econômico financeiro, estratégia de mercado e equipe e aplicação do teste Mann-Whintey.

Restablished Accretion in Post-outburst Classical Novae Revealed by X-rays

Science.gov (United States)

Hernanz, Margarita; Ferri, Carlo; Sala, Glòria

2009-05-01

Classical novae are explosions on accreting white dwarfs (hereinafter WDs) in cataclysmic variables (hereinafter CVs) a hydrogen thermonuclear runaway on top of the WD is responsible for the outburst. X-rays provide a unique way to study the turn-off of H-burning, because super soft X-rays reveal the hot WD photosphere, but also to understand how accretion is established again in the binary system. Observations with XMM-Newton of some post-outburst novae have revealed such a process, but a coverage up to larger energies -as Simbol-X will provide- is fundamental to well understand the characteristics of the binary system and of the nova ejecta. We present a brief summary of our results up to now and prospects for the Simbol-X mission.

New insights from a statistical analysis of IUE spectra of dwarf novae and nova-like stars. I - Inclination effects in lines and continua

Science.gov (United States)

La Dous, Constanze

1991-01-01

IUE observations of dwarf novae at maximum at quiescence and novalike objects at the high brightness state are analyzed for effects of the inclination angle on the emitted continuum and line radiation. A clear pattern in the continuum flux distribution is exhibited only by dwarf novae at maximum where some 80 percent of the non-double-eclipsing systems show essentially identical distributions. This result is not in disagreement with theoretical expectations. All classes of objects exhibit a clear, but in each case different, dependence of the line radiation on the inclination angle.

Role of thermonuclear instability in recent models of nova stars

Energy Technology Data Exchange (ETDEWEB)

Secco, L [Padua Univ. (Italy). Ist. di Astronomia

1981-10-11

In this paper we review models of nova-star explosion based on the original suggestion by Kraft and developed during about ten years (from 1967). We aim at summarizing here the most salient results of those theoretical models and to point out the many aspects of the problems that are still unsettled. In particular, we analyse thermonuclear instabilities both in perfect and electron-degenerate gas, since they seem to be at the base of the nova explosion phenomena.

Detection of Highly-Absorbed X-rays from Nova Mus 2018 with Swift

Science.gov (United States)

Nelson, Thomas; Kuin, Paul; Mukai, Koji; Page, Kim; Chomiuk, Laura; Kawash, Adam; Sokoloski, J. L.; Linford, Justin; Rupen, Michael P.; Mioduszewski, Amy

2018-03-01

We report the detection of X-rays from Nova Mus 2018 with the Swift XRT instrument. We have been carrying out weekly monitoring of the nova with Swift since its discovery on 2018 Jan 15 (see ATel #11220), and observations up to 2018 Feb 24 yielded X-ray non-detections.

O rap radical e a "nova classe média"

Directory of Open Access Journals (Sweden)

Ricardo Indig Teperman

2015-04-01

Full Text Available Este artigo discute a recente alteração na posição relativa do rap e dos rappers no campo da produção cultural no Brasil. O grupo Racionais MCs, tão central no campo do rap nacional que acaba por determinar a tendência hegemônica do gênero, vem se afastando do posicionamento revolucionário que marcou seus primeiros anos. Proponho que o aumento do poder de consumo e a democratização do acesso à tecnologia e à educação são aspectos que marcam a experiência da nova geração do rap (a chamada "nova escola", personificada em Emicida, e que provocaram o reposicionamento do Racionais. Recupero uma formulação de Antonio Candido para propor que essa nova posição pode ser considerada "radical".

TLC Estados Unidos – Colombia: oportunidades de negocio en el sector cervecero colombiano

OpenAIRE

Loaiza Saa, Isabella; Hernández Rojas, Gustavo Andrés

2014-01-01

El presente trabajo analiza el sector cervecero colombiano y las oportunidades de importación de cerveza artesanal generadas por el TLC Estados Unidos- Colombia. También se describe la relación comercial entre Colombia y Estados Unidos durante el periodo comprendido entre los años 2000 y 2013 junto con la inflación y la tasa de desempleo. Para finalizar se realiza un pronóstico de la demanda y un modelo de inventarios para el posible importador y se brindan sugerencias en cuanto a la distribu...

SOLUCIÓN POLÍTICA NEGOCIADA: OPORTUNIDAD PARA LA DEMOCRATIZACIÓN DE LA SOCIEDAD

OpenAIRE

Zuluaga Nieto, Jaime

2001-01-01

Mostrando el origen y persistencia de la guerra civil en Colombia y describiendo las modalidades de su intensificación y degradación actuales, este artlculo propone que la opción de la negociación política antes que sea tarde, puede ser la oportunidad para construir una democracia moderna fundada en un desarrollo consistente en la expansión de las libertades reales de los individuos la equidad y la justicia social.This essay seeks.to propose, by presenting the origin and persistence of the ci...

Province of Nova Scotia Electricity Marketplace Governance Committee First Interim Report

International Nuclear Information System (INIS)

2002-12-01

This report summarizes the group discussions of the Electricity Marketplace Governance Committee's (EMGC) over the past 6 months regarding the implementation of new rules for power competition in Nova Scotia's electricity market. Emphasis has been placed on external influences, defining the size and form of the short-term competitive portion of the Nova Scotia market, and a detailed consideration of the current transmission system and the changes needed to achieve a sustainable, world class energy sector that would enhance the quality of life for Nova Scotians. The report provides recommendations regarding how competition can be encouraged. The main drivers for electricity restructuring have been energy efficiency, risk-allocation, reliability, environmental impact, and consumer protection. The external influences on the Nova Scotia electricity market include: (1) economics of electricity restructuring, (2) the Federal Energy Regulatory Commission, (3) New Brunswick and electricity restructuring, and (4) Nova Scotia and the energy strategy. This report described the market scope and basic market model with reference to bilateral contract market, fully competitive wholesale pool market, and a single buyer market. The transmission issues discussed in this report included the importance of transmission, transmission tariff options, transmission services offered, design issues, and congestion management policies. The EMGC was directed to examine market design issues to accommodate an Open Access Transmission Tariff (OATT). As such, this report identifies some transmission issues that must be resolved to implement tariffs, and conditions of access to the transmission system and its impact on open access market design. The final report is expected to be available in March 2003

Análisis de Gestion Tecnológica en Centros de Investigación

OpenAIRE

Carmen Castrejón Mata; Roberto Hernandez Sampieri; Hector Ruiz Rueda

2012-01-01

La existencia de los laboratorios tecnologicos y su importancia en muchos paises es reconocida, al ser centros que integran las mejores tecnologías disponibles de diversas profesiones y disciplinas que las universidades y centros de investigación prestan o ponen al servicio de la sociedad. Pero más que laboratorios que ofrecen esa tecnología de punta a esas disciplinas, son centros que desarrollan conocimiento, teniendo como resultado inmediato nuevas soluciones, diseños a las problematicas q...

Del gimnasio al ocio-salud Centros de Fitness, Fitness Center, Fitness & Wellness, Spa, Balnearios, Centros de Talasoterapia, Curhotel

Directory of Open Access Journals (Sweden)

Joaquín Reverter Masi

2007-12-01

Full Text Available Actualmente el sector “gimnasios y centros deportivos” se constituye como una parcela de gran importancia dentro del panorama de la industria del ocio. El auge creciente del sector ocio-salud se viene produciendo desde hace varias décadas, de modo que en la actualidad el ocio y tiempo de ocio, y ejercicio físico y deporte como ocio son predictores de calidad de vida. En este sentido es cuando podemos y debemos relacionar ocio con la calidad de vida, un concepto multidimensional que incluye todos los ámbitos de la vida humana (estado de la salud, bienestar, participación social, condiciones de vida.... En este trabajo se analiza como han ido evolucionado los centros dedicados a la practica deportiva y a la salud. Un sector que desde la antigüedad hasta nuestros días ha tenido que ir adaptando y ampliando su oferta de actividades y productos según las necesidades de los usuarios.

Arte, cultura e cuidado nos centros de atencao psicossocial

Directory of Open Access Journals (Sweden)

Ana Tereza Costa Galvanese

2013-06-01

Full Text Available OBJETIVO: Analisar o processo de cuidado desenvolvido por meio de arte e cultura em centros de atenção psicossocial. MÉTODOS: Estudo integrado à pesquisa de avaliação dos centros de atenção psicossocial, em São Paulo, SP. Foram analisados os relatos da observação de tipo etnográfico de 126 atividades grupais de arte e cultura realizadas em 21 desses centros, entre 2007 e 2008. A análise incluiu depoimentos de coordenadores sobre os objetivos das atividades observadas. Baseado em referenciais teóricos da atenção psicossocial, utilizou-se da técnica de análise de conteúdo para investigar relações entre meios terapêuticos (enquadres, atividades e vínculos e objetivos das atividades. RESULTADOS: Três tendências de cuidado foram identificadas: (1 estritamente clínica, predominante e marcada por atividades realizadas dentro dos centros com foco em competências pessoais e interações grupais; (2 psicossocial, que incluiu atividades no território, ampliação dos repertórios culturais e da circulação social; e (3 residual, minoritária e sem ganhos psicossociais. CONCLUSÕES: A realização de atividades de arte e cultura que produzam cuidado na perspectiva da reabilitação psicossocial depende do acesso dos profissionais a bens culturais e a processos criativos, do reconhecimento dessas atividades como trabalho integrado a toda a equipe e da consideração de todos os atores envolvidos como produtores de fatos de cultura.

Role of thermonuclear instabilities of recent models of nova-stars

Energy Technology Data Exchange (ETDEWEB)

Secco, L [Padua Univ. (Italy). Ist. di Astronomia

1981-10-11

In this paper, a review models of nova-star explosion based on the original suggestion by Kraft and developed during about ten years (from 1967) is presented. The aim is to summarize the most salient results of those theoretical models and to point out the many aspects of the problems that are still unsettled. In particular, thermonuclear instabilities both in perfect and electron-degenerate gas are analyzed, since they seem to be at the base of the nova explosion phenomena.

Por uma 'nova pragmática emancipatória'

OpenAIRE

Ferreira,Dina Maria Martins; Alencar,Claudiana Nogueira de

2013-01-01

Neste artigo propomos o modus operandi de uma pragmática contra-hegemônica no que tange às teorias do mainstream, ou seja, as internalistas (auto-suficiência da língua como sistema) e as externalistas (aspecto social aliado à língua e não constitutivo da língua). Para tal, constroem-se dois percursos argumentativos para dar conta de uma nova Pragmática emancipatória: (1) nova, que mostra a incompatibilidade conceitual entre a teoria austiniana e a interpretada por seu discípulo Searle; (2) em...

A NOVA EVANGELIZAÇÃO NA EUROPA

Directory of Open Access Journals (Sweden)

Martin Maier

2013-01-01

Full Text Available Neste estudo, o olhar dirige-se em primeiro lugar para a situação religiosa da Europa. Em seguida, resumiremos o conceito da nova evangelização de acordo com os últimos papas. O passo seguinte será perguntar o que as igrejas podem oferecer à Europa. A nova evangelização deve acontecer no horizonte do ecumenismo e da globalização. Importante ponto de conexão para a transmissão da fé é a constante sede de espiritualidade e de experiência espiritual, bem como de conhecimento da religião e da fé. Por fim, desenvolveremos algumas chances que podem relacionar-se com a nova evangelização na Europa.  ABSTRACT: In this study, the focus is directed first of ali to the religious situation in Europe. Then we will sum up the concept of the new evangelization according to the recent Popes. The next step will be to ask what the churches can offer to Europe. The new evangelization must happen on the horizon of ecumenism and globalization. An important point of connection to the transmission of the faith is the constant thirst for spirituality and spiritual experience as well as the knowledge of religion and faith. Finally, we will develop some opportunities that can relate to the new evangelization in Europe

Fontes de financiamento para planos de mobilidade urbana: a sistematização das janelas de oportunidade de financiamento geridas pelo Ministério das Cidades

OpenAIRE

Ruiz, Isadora

2015-01-01

O presente trabalho tem como objetivo a sistematização das janelas de oportunidade de financiamento de elaboração e implementação dos Planos de Mobilidade Urbana, atualmente geridas pelo Ministério das Cidades. Para tanto, foi primeiramente realizado um diagnóstico da Mobilidade Urbana no Brasil, desenvolvido o conceito de Plano de Mobilidade Urbana, bem como identificadas as janelas de oportunidade de financiamento. Em seguida, o trabalho descreve em detalhes cada uma das janelas de oportuni...

CONCURRENT FORMATION OF CARBON AND SILICATE DUST IN NOVA V1280 SCO

Energy Technology Data Exchange (ETDEWEB)

Sakon, Itsuki; Onaka, Takashi; Usui, Fumihiko [Department of Astronomy, Graduate Schools of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Sako, Shigeyuki; Takahashi, Hidenori; Ohsawa, Ryou [Institute of Astronomy, University of Tokyo, 2-21-1 Ohsawa, Mitaka, Tokyo 181-0015 (Japan); Nozawa, Takaya [National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan); Kimura, Yuki [Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819 (Japan); Fujiyoshi, Takuya [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720 (United States); Shimonishi, Takashi [Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Aramaki aza Aoba 6-3, Aoba-ku, Sendai 980-8578 (Japan); Arai, Akira [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto, 603-8555 (Japan); Uemura, Makoto [Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526 (Japan); Nagayama, Takahiro [Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065 (Japan); Koo, Bon-Chul [Department of Physics and Astronomy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-742 (Korea, Republic of); Kozasa, Takashi, E-mail: isakon@astron.s.u-tokyo.ac.jp [Department of Cosmosciences, Graduate School of Science, Hokkaido University, Sapporo 060-0810 (Japan)

2016-02-01

We present infrared multi-epoch observations of the dust-forming nova V1280 Sco over ∼2000 days from the outburst. The temporal evolution of the infrared spectral energy distributions at 1272, 1616, and 1947 days can be explained by the emissions produced by amorphous carbon dust of mass (6.6–8.7) × 10{sup −8} M{sub ⊙} with a representative grain size of 0.01 μm and astronomical silicate dust of mass (3.4–4.3) × 10{sup −7} M{sub ⊙} with a representative grain size of 0.3–0.5 μm. Both of these dust species travel farther away from the white dwarf without apparent mass evolution throughout those later epochs. The dust formation scenario around V1280 Sco suggested from our analyses is that the amorphous carbon dust is formed in the nova ejecta followed by the formation of silicate dust either in the expanding nova ejecta or as a result of the interaction between the nova wind and the circumstellar medium.

Consultation paper : Nova Scotia's renewed energy strategy and climate change action plan

International Nuclear Information System (INIS)

2007-10-01

The Nova Scotia Department of Energy is seeking to create a sustainable and prosperous Nova Scotia that is responsive to climate change. The purpose of this report was to inform public discussion around two upcoming documents, namely the renewed energy strategy focusing on broad energy policy and a climate change action plan for Nova Scotia to reduce greenhouse gas emissions. The report discussed mitigation measures, as it is closely tied with energy use. The consultation process to inform the two documents was to include public forums and direct stakeholder consultation. The report discussed Nova Scotia's strategy for dealing with climate change and the world of energy. Recent changes in energy prices, exploration, awareness, and emerging but uncertain technologies were presented. Long term planning and a review of policy changes were also addressed. The report also presented options for a renewed energy strategy and discussed air quality; energy conservation and efficiency; electricity; natural gas; energy opportunities; government action; and government intervention. Submissions were also sought as input to the discussion paper. refs., tabs., figs., appendices

Propuesta de diseño de operación logística para una empresa que comercializa artículos para la línea hogar

OpenAIRE

Velasco Cabrera, Carlos Alberto; Leiva Infante, Enrique

2012-01-01

El presente trabajo de grado es la propuesta concreta del diseño de un modelo de un centro de distribución acorde a las necesidades de un cliente específico del sector comercializador línea hogar de la ciudad de Cali, respondiendo así a la oportunidad de mejora en las actividades de recepción ¿ almacenamiento? alistamiento y despacho que algunos operadores logísticos no están en capacidad de ofrecer en la ciudad de Cali. El diseño del centro de distribución es la propuesta después de hab...

Perspective : component tracking on the Nova system

International Nuclear Information System (INIS)

MacDonald, S.

1999-01-01

The issue of introducing Component Tracking as a service to natural gas producers, shippers and straddle plant operators was discussed. Approximately 39 companies in the industry were contacted by consultants at Nova Gas Transmission in an effort to assess if introducing this service would add value to individual producers. The numerous implications that may have to be dealt with if Component Tracking is introduced were also described. Component Tracking would provide an equitable approach to the allocation of molecules in the gas stream, and could provide producers with the ability to avoid capital outlay in field plants by alternatively contracting for recovery of the liquids at the straddle plants. Component Tracking is to be voluntary and each shipper would be able to decide whether to utilize the service at each of their receipt points onto the Nova system

La estructura de oportunidad política en la aparición del movimiento estudiantil mexicano de 1968

OpenAIRE

Leon, Melissa

2014-01-01

Este documento presenta un estudio de cómo los cambios en las dimensiones pertenecientes a la estructura de oportunidad política, fueron determinantes en la conformación identitaria de un movimiento, la estructuración de sus demandas y sus métodos de actuación

Uma padre na aldeia global : nova evangelização e novas tecnologias de informação e comunicação

OpenAIRE

Aguiar, Américo Manuel Alves

2012-01-01

Nesta dissertação, revemos os últimos cem anos de pronunciamentos dos sucessores de Pedro, do Papa Leão XIII, ao Papa Bento XVI, atestando a atenção e interesse com que a igreja católica sempre olhou para as potencialidades oferecidas pelas novas tecnologias de informação e de comunicação. Olhamos de um ponto de vista comunicacional para a urgência da Nova Evangelização pronunciada pelo Papa João Paulo II, dando continuidade ao já expresso pelo Papa Paulo VI e pelo próprio II ...

The evolution of the Luz y Fuerza del Centro substations. Volume 2; Evolucion de las subestaciones de Luz y Fuerza del Centro. Volumen 2

Energy Technology Data Exchange (ETDEWEB)

Carranza Ramirez, Sergio [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

1997-12-31

This document cites historical background of how the Luz y Fuerza del Centro substations have evolved up to nowadays. A brief description is made of one electric substation, the substation design criteria are mentioned, since it must comply with the requirements of reliability, service continuity, service quality, economy, geographical location, just for mentioning some of them. The more utilized arrangements of the Luz y Fuerza del Centro substations are described. In the same manner, the remote control substations are described mentioning the main elements of this type of substations. Mention is made also of the technological incorporations that have been made to the substations and the perspectives there are from these. One line diagrams of the electric substations are shown, as well as from power plant substations [Espanol] Este documento cita antecedentes historicos de como han evolucionando las subestaciones de Luz y Fuerza del Centro hasta hoy en dia. Se realiza una breve descripcion de una subestacion electrica, se mencionan los criterios de diseno de una subestacion, ya que debe cumplir con los requisitos de confiabilidad, continuidad, calidad del servicio, economia, situacion geografica, por mencionar algunos de estos. Se describen los arreglos de las subestaciones mas utilizados por Luz y Fuerza del Centro. De igual manera se describen las subestaciones telecontroladas mencionando los principales elementos de este tipo de subestaciones. Se mencionan las incorporaciones tecnologicas que se han realizado a las subestaciones y las perspectivas que se tienen de estas. Se muestran diagramas unifilares de subestaciones electricas, al igual que se muestran las plantas de las subestaciones

Data Driven Trigger Design and Analysis for the NOvA Experiment

Energy Technology Data Exchange (ETDEWEB)

Kurbanov, Serdar [Univ. of Virginia, Charlottesville, VA (United States)

2016-01-01

This thesis primarily describes analysis related to studying the Moon shadow with cosmic rays, an analysis using upward-going muons trigger data, and other work done as part of MSc thesis work conducted at Fermi National Laboratory. While at Fermilab I made hardware and software contributions to two experiments - NOvA and Mu2e. NOvA is a neutrino experiment with the primary goal of measuring parameters related to neutrino oscillation. This is a running experiment, so it's possible to provide analysis of real beam and cosmic data. Most of this work was related to the Data-Driven Trigger (DDT) system of NOvA. The results of the Upward-Going muon analysis was presented at ICHEP in August 2016. The analysis demonstrates the proof of principle for a low-mass dark matter search. Mu2e is an experiment currently being built at Fermilab. Its primary goal is to detect the hypothetical neutrinoless conversion from a muon into an electron. I contributed to the production and tests of Cathode Strip Chambers (CSCs) which are required for testing the Cosmic Ray Veto (CRV) system for the experiment. This contribution is described in the last chapter along with a short description of the technical work provided for the DDT system of the NOvA experiment. All of the work described in this thesis will be extended by the next generation of UVA graduate students and postdocs as new data is collected by the experiment. I hope my eorts of have helped lay the foundation for many years of beautiful results from Mu2e and NOvA.

La crisis de la jubilación como una oportunidad educativa A crise da aposentadoria como oportunidade educativa

Directory of Open Access Journals (Sweden)

Mónica Meza-Mejía

2008-12-01

Full Text Available La edad adulta es un período de la vida que se inicia en la década de los veinte y se prolonga hasta la vejez. En este camino, la persona suele atravesar diferentes crisis: las décadas de los treinta y los cuarenta, y el paso hacia la vejez. Si bien los sistemas formales y no formales de educación se orientan fundamentalmente a preparar para la vida, lo hacen sobre todo para la vida activa. Si se considera que la pirámide poblacional se invierte, la educación y los educadores tendrían que preparar a las personas para la edad del retiro. Jubilarse no tendría que significar una crisis que derive en depresión, inacción o en pérdida del sentido de la vida. Al contrario, en la medida en la que la persona aprenda a asumir el desapego como algo natural, estará en condiciones de otorgarle a este período un nuevo valor, y esto resulta una oportunidad educativa.A idade adulta é um período da vida que começa aos vinte anos e termina na velhice. Neste percurso, a pessoa atravessa diversas crises: os trinta anos, os quarenta anos e o passo à velhice. Mesmo se os sistemas formais e não formais de educação orientam-se basicamente para preparação da vida, só pre-param para a vida ativa. Se a pirâmide populacional se inverte, a educação e os educadores teriam que preparar às pessoas para a idade da aposentadoria. Aposentarse no teria que ser uma crise que leve à depressão, inação ou perda do sentido da vida. Ao contrário, a medida que a pessoa aprenda a assumir o desapego como uma etapa normal, estará em condições de dar a este período um valor novo, o qual pode ser uma oportunidade educativa.Adulthood is a time of life that begins when a person is in their twenties and lasts until old age. Along the way, people often go through different crises: the thirties, the forties, and the passage into old age. Although formal and non-formal systems of education are intended essentially to prepare a person for life, they do so

Expanding Pharmacists' Scope of Practice to Include Immunization in Nova Scotia

Directory of Open Access Journals (Sweden)

Beth O'Reilly

2017-07-01

Full Text Available On 10 December 2010 An Act to Amend Chapter 36 of the Acts of 2001, the Pharmacy Act (Bill 7 received Royal Assent in Nova Scotia, including an amendment that enabled an expanded scope of pharmacy practice. Expanding pharmacists' scope of practice came about from recommendations by various federal and provincial government bodies as an attempt to improve accessibility to health care and decrease costs. In 2013, pharmacists in Nova Scotia began administering the influenza vaccine as part of the publicly funded program in attempts to improve vaccine coverage rates. Preliminary evaluation in Nova Scotia has shown an increase in influenza vaccination coverage. Although pharmacist administration of influenza vaccination may improve vaccination coverage and reduce demand on physician time, there may be tension created among the professions, which needs to be addressed and managed.

CNEA - Centro Atómico Bariloche

Science.gov (United States)

en Ciencia y Tecnología Formación de Recursos Humanos de alto nivel Mapa del sitio Contacto Buscar en la formación de recursos humanos. Leer más: Centro atómico bariloche Próximos Eventos

Correlation between the meteorological data acquisition systems of the Centro Experimental ARAMAR

Energy Technology Data Exchange (ETDEWEB)

Oliveira, Rando M.; Beu, Cássia M.L., E-mail: rando.oliveira@marinha.mil.br, E-mail: cassia.beu@marinha.mil.br [Centro Tecnológico da Marinha em São Paulo (CEA/CTMSP), Iperó, SP (Brazil). Centro Experimental ARAMAR

2017-07-01

Centro Experimental ARAMAR (CEA) is a Brazilian Navy Technological Center located in the rural area of lperó (São Paulo State), about 10-km distant from the nearest urban area. One of the most important activities at CEA is the nuclear fuel cycle research, as well as the development of a small-scale pressurized water reactor (PWR) land based prototype, The Laboratório Radioecológico (LAR E) is responsible for the meteorological observation program which relies on an automatic data collection system, The following variables are continuously measured: pressure, precipitation, wind speed, wind direction, temperature and relative humidity, The obtained data is refined and used in the annual reports to Comissão Nacional de Energia Nuclear (CNEN), and are an important input data for atmospheric dispersion models. Due to the construction of the Laboratório de Geraç!o Nucleoclétrica (LABGENE), it will be necessary to change tbe location of the towers and meteorological sensors, Thus, since 20 14, a new set of towers and sensors (Torre Nova) are in operation. The new location is 900 m distant from the old set (Torre Velha). Therefore, CEA has currently two meteorological data acquisition systems operating concurrently for approximately three years. The present work aims to compare the meteorological data of both systems in order to verify their agreement. The meteorological time series of both systems were submitted to a statistical analysis to evaluate their correlation. The results of this work confirm the compatibility of the two systems, showing that the Torre Velha can be deactivated without impairment to the meteorological time series. (author)

Correlation between the meteorological data acquisition systems of the Centro Experimental ARAMAR

International Nuclear Information System (INIS)

Oliveira, Rando M.; Beu, Cássia M.L.

2017-01-01

Centro Experimental ARAMAR (CEA) is a Brazilian Navy Technological Center located in the rural area of lperó (São Paulo State), about 10-km distant from the nearest urban area. One of the most important activities at CEA is the nuclear fuel cycle research, as well as the development of a small-scale pressurized water reactor (PWR) land based prototype, The Laboratório Radioecológico (LAR E) is responsible for the meteorological observation program which relies on an automatic data collection system, The following variables are continuously measured: pressure, precipitation, wind speed, wind direction, temperature and relative humidity, The obtained data is refined and used in the annual reports to Comissão Nacional de Energia Nuclear (CNEN), and are an important input data for atmospheric dispersion models. Due to the construction of the Laboratório de Geraç!o Nucleoclétrica (LABGENE), it will be necessary to change tbe location of the towers and meteorological sensors, Thus, since 20 14, a new set of towers and sensors (Torre Nova) are in operation. The new location is 900 m distant from the old set (Torre Velha). Therefore, CEA has currently two meteorological data acquisition systems operating concurrently for approximately three years. The present work aims to compare the meteorological data of both systems in order to verify their agreement. The meteorological time series of both systems were submitted to a statistical analysis to evaluate their correlation. The results of this work confirm the compatibility of the two systems, showing that the Torre Velha can be deactivated without impairment to the meteorological time series. (author)

DAQ Software Contributions, Absolute Scale Energy Calibration and Background Evaluation for the NOvA Experiment at Fermilab

Energy Technology Data Exchange (ETDEWEB)

Flumerfelt, Eric Lewis [Univ. of Tennessee, Knoxville, TN (United States)

2015-08-01

The NOvA (NuMI Off-axis v_e [nu_e] Appearance) Experiment is a long-baseline accelerator neutrino experiment currently in its second year of operations. NOvA uses the Neutrinos from the Main Injector (NuMI) beam at Fermilab, and there are two main off-axis detectors: a Near Detector at Fermilab and a Far Detector 810 km away at Ash River, MN. The work reported herein is in support of the NOvA Experiment, through contributions to the development of data acquisition software, providing an accurate, absolute-scale energy calibration for electromagnetic showers in NOvA detector elements, crucial to the primary electron neutrino search, and through an initial evaluation of the cosmic background rate in the NOvA Far Detector, which is situated on the surface without significant overburden. Additional support work for the NOvA Experiment is also detailed, including DAQ Server Administration duties and a study of NOvA’s sensitivity to neutrino oscillations into a “sterile” state.

Nova Scotia Energy Strategy : progress report

Energy Technology Data Exchange (ETDEWEB)

NONE

2003-02-01

Nova Scotia's energy strategy addresses all aspects of energy production and use, from offshore oil and gas to electricity and coal, to climate change and renewable resources. It also encompasses energy conservation and efficiency. This progress report highlights the efforts that the province has made to promote exploration, improve efficiency of regulations and approval processes and promote the oil and natural gas sector. Efforts have also been made to support local businesses, address climate change issues and protect the environment. The strategy demonstrates how new energy resources can be used to build a more prosperous and self-reliant province. The progress report focuses on the following 3 themes: powering the economy; improving the environment; and, securing Nova Scotia's future. The report emphasizes that the growing oil and gas industry brings many opportunities for new jobs and a stronger economy. In the next 12 to 18 months, about 8 to 10 offshore exploration wells will be drilled, which is more than in the last decade. Funding will be provided to extend pipeline systems beyond franchise areas approved by the Nova Scotia Utility and Review Board. In May 2002, the Electricity Marketplace Governance Committee was formed to make recommendations on how competition can be introduced into the province's electricity market. The Department of Energy has been working to implement initiatives to increase the use of renewable energy sources such as solar and wind power. In October 2002, new wind turbines began producing electricity in 3 communities on Cape Breton Island. A key priority is to respond to climate change and reduce greenhouse gas emissions as well as emissions of mercury, sulphur, nitrogen, and ozone. The energy strategy also identifies the need to provide competitive taxation regimes.

Strategies of design, development and activation of the Nova control system

International Nuclear Information System (INIS)

Holloway, F.W.

1983-01-01

Nova and Novette are large complex experimental laser facilities which require extensive and sophisticated control systems for their successful operation. Often, in major controls projects, certain invisible aspects of the project, such as overall strategy, management, resources and historical constraints, have a more profound effect upon success than any specific hardware/software design. The design and performance of the Nova/Novette laser control system will be presented with special emphasis upon these often controversial aspects

Strategies of design, development and activation of the Nova control system

Energy Technology Data Exchange (ETDEWEB)

Holloway, F.W.

1983-06-30

Nova and Novette are large complex experimental laser facilities which require extensive and sophisticated control systems for their successful operation. Often, in major controls projects, certain invisible aspects of the project, such as overall strategy, management, resources and historical constraints, have a more profound effect upon success than any specific hardware/software design. The design and performance of the Nova/Novette laser control system will be presented with special emphasis upon these often controversial aspects.

Isotopic 32S/33S ratio as a diagnostic of presolar grains from novae

Directory of Open Access Journals (Sweden)

A. Parikh

2014-10-01

Full Text Available Measurements of sulphur isotopes in presolar grains can help to identify the astrophysical sites in which these grains were formed. A more precise thermonuclear rate of the 33S(p,γ34Cl reaction is required, however, to assess the diagnostic ability of sulphur isotopic ratios. We have studied the 33S(3He,d34Cl proton-transfer reaction at 25 MeV using a high-resolution quadrupole–dipole–dipole–dipole magnetic spectrograph. Deuteron spectra were measured at ten scattering angles between 10° and 55°. Twenty-four levels in 34Cl over Ex=4.6–5.9 MeV were observed, including three levels for the first time. Proton spectroscopic factors were extracted for the first time for levels above the 33S + p threshold, spanning the energy range required for calculations of the thermonuclear 33S(p,γ34Cl rate in classical nova explosions. We have determined a new 33S(p,γ34Cl rate using a Monte Carlo method and have performed new hydrodynamic nova simulations to determine the impact on nova nucleosynthesis of remaining nuclear physics uncertainties in the reaction rate. We find that these uncertainties lead to a factor of ≤5 variation in the 33S(p,γ34Cl rate over typical nova peak temperatures, and variation in the ejected nova yields of SCa isotopes by ≤20%. In particular, the predicted 32S/33S ratio is 110–130 for the nova model considered, compared to 110–440 with previous rate uncertainties. As recent type II supernova models predict ratios of 130–200, the 32S/33S ratio may be used to distinguish between grains of nova and supernova origin.

The Convolutional Visual Network for Identification and Reconstruction of NOvA Events

Energy Technology Data Exchange (ETDEWEB)

Psihas, Fernanda [Indiana U.

2017-11-22

In 2016 the NOvA experiment released results for the observation of oscillations in the vμ and ve channels as well as ve cross section measurements using neutrinos from Fermilab’s NuMI beam. These and other measurements in progress rely on the accurate identification and reconstruction of the neutrino flavor and energy recorded by our detectors. This presentation describes the first application of convolutional neural network technology for event identification and reconstruction in particle detectors like NOvA. The Convolutional Visual Network (CVN) Algorithm was developed for identification, categorization, and reconstruction of NOvA events. It increased the selection efficiency of the ve appearance signal by 40% and studies show potential impact to the vμ disappearance analysis.

Event Reconstruction in the NOvA Experiment

Energy Technology Data Exchange (ETDEWEB)

Behera, Biswaranjan [Indian Inst. Tech., Hyderabad; Davies, Gavin [Indiana U.; Psihas, Fernanda [Indiana U.

2017-10-10

The NOvA experiment observes oscillations in two channels (electron-neutrino appearance and muon-neutrino disappearance) using a predominantly muon-neutrino NuMI beam. The Near Detector records multiple overlapping neutrino interactions in each event and the Far Detector has a large background of cosmic rays due to being located on the surface. The oscillation analyses rely on the accurate reconstruction of neutrino interactions in order to precisely measure the neutrino energy and identify the neutrino flavor and interaction mode. Similarly, measurements of neutrino cross sections using the Near Detector require accurate identification of the particle content of each interaction. A series of pattern recognition techniques have been developed to split event records into individual spatially and temporally separated interactions, to estimate the interaction vertex, and to isolate and classify individual particles within the event. This combination of methods to achieve full event reconstruction in the NOvA detectors has discussed.

White dwarf heating and the ultraviolet flux in dwarf novae

International Nuclear Information System (INIS)

Pringle, J.E.

1988-01-01

An investigation is made of the heating of the outer layers of the white dwarf which is likely to occur during a dwarf nova outburst. It is shown that the decline in IUE flux, observed during quiescent intervals in the dwarf novae VW Hydri and WX Hydri, may be due to the outer layers cooling off once the heat source is removed. The calculations here assume uniformity of the heat source over the white dwarf surface. This is unlikely to be realized from disc accretion, and we discuss that further calculations are required. (author)

Further X-ray observations of Nova Del 2013 with Swift

Science.gov (United States)

Nelson, T.; Mukai, K.; Chomiuk, L.; Sokoloski, J.; Weston, J.; Zheng, Y.; Rupen, M.; Mioduszewski, A.; Linford, J.; Finzell, T.

2013-08-01

We observed Nova Del 2013 (see CBET #3628) with the Swift satellite on 2013-08-18, four days after discovery (see also ATEL #5283). The exposures were carried out between 0.0 and 15.7 UT, and are therefore coincident with the first appearance of gamma-ray emission from this nova as seen with the Fermi-LAT (ATEL #5302). The XRT instrument was operated in Window Timing (WT) in order to mitigate the impact of optical loading on the CCD, and the total exposure time was 4522s.

Pensando sobre los "centros abiertos": Una contribución desde Brasil

Directory of Open Access Journals (Sweden)

Verónica Regina Müller

1999-11-01

Full Text Available Este artículo aborda algunos principios que se consideran básicos para el funcionamiento de un "centro abierto" en Brasil. El artículo resalta el absoluto respeto que debe haber hacia la cultura de los niños y jóvenes que viven en la calle y frecuentan el centro. Se comenta inicialmente el concepto de ciudadanía, concepto que significa un principio de trabajo en los centros abiertos. A partir de ahí, se derivan comentarios sobre el significado de otros temas como la participación, la responsabilidad, el respeto, la implicación, la identidad, la cultura y la libertad. Finalmente, se describe la metodología de trabajo de los centros abiertos. AbstractThis paper deals with some essential principles for the operation of an "open center" in Brazil. It emphasizes the thorough respect that should be kept towards the culture of children and youngsters who live in the streets and attend the center. First, the concept of citizenship is discussed, a concept that means a principle in the "open centers". Comments about the meaning of other issues are derived from that point: participation, responsibility, respect, involvement, identity, culture and freedom. Finally, there is a description of the open centers’ operational methodology.Keywords: Street children, childrens rights, homeless people, outreach programs.

Radiometric parameters in freshwater samples of Centro Experimental Aramar (CTMSP/Brazil)

Energy Technology Data Exchange (ETDEWEB)

Moraes, Marco Antonio P.V. [Laboratorio Radioecologico (LARE), Ipero, SP (Brazil). Dept. de Seguranca Nuclear; Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

2011-07-01

Experimental results are described obtained with gamma spectrometry, alpha and beta gross counts, liquid scintillation and fluorometry techniques for the measurement of background radiation in surface water samples, collected in Centro Experimental Aramar and surroundings, from 1988 to 2009. The estimated average background radiation concentrations in water samples in this region are low, related to the low level detection limits of the techniques, and indicates good water quality parameters, and low interference in the environment in Centro Experimental Aramar and region. (author)

Nuevo centro olímpico en Lake Placid, EE.UU

OpenAIRE

Hellmuth, George; Obata, Gyo; Kassabaum, George

1980-01-01

Este nuevo centro deportivo, sede de los Juegos Olímpicos de Invierno de 1980, consta de una pista principal de hielo de dimensiones olímpicas con unos graderíos para 8.000 personas, y de una pista más pequeña utilizada para los Juegos U.S.A. Los servicios auxiliares se encuentran debajo de las gradas o en la estructura que enlaza el nuevo Centro con la pista ya empleada en los anteriores Juegos de 1932. Completa el complejo una Escuela Superior y una pista de forma oval para patinaje...

Valor da tecnologia da informação e sua relação com métricas de desempenho empresarial: o caso de uma multinacional do ramo químico

OpenAIRE

Ping, Alice Tai Hsin

2010-01-01

O cenário globalizado e competitivo impulsiona os avanços tecnológicos e proporciona novas oportunidades para o desenvolvimento de inovações e novas soluções. Neste contexto, o papel da Tecnologia da Informação antes atribuído às atividades mais operacionais evolui para um enfoque mais estratégico e de parceria na criação de vantagem competitiva sustentável e assim, contribui para a geração de valor nos negócios. O aumento nos investimentos de TI nas últimas décadas tem sido acompanhado de qu...

Nova target diagnostics control system

International Nuclear Information System (INIS)

Severyn, J.R.

1985-01-01

During the past year the Nova target diagnostics control system was finished and put in service. The diagnostics loft constructed to the north of the target room provides the environmental conditions required to collect reliable target diagnostic data. These improvements include equipment cooling and isolation of the power source with strict control of instrumentation grounds to eliminate data corruption due to electromagnetic pulses from the laser power-conditioning system or from target implosion effects

El emprendedor potencial: identificación de oportunidades relacionadas con algunas variables del capital humano y social

Directory of Open Access Journals (Sweden)

Zugaide Escamilla Salazar

2014-01-01

Full Text Available En las últimas décadas, el emprendimiento ha adquirido gran importancia por su relación con el crecimiento y desarrollo económico de un país a través de la creación de empresas. En este sentido, el descubrimiento de oportunidades resulta un aspecto clave en la actividad empresarial y con ello convirtiéndose en un punto muy importante en las investigaciones (las cuales han mejorado con datos del Global Entrepreneurship Monitor (GEM. El objetivo principal de este trabajo es analizar los factores del capital humano y del capital social que se relacionan con el descubrimiento de oportunidades para mujeres y hombres de Latinoamérica a partir de la base de datos del proyecto GEM para ocho países latinoamericanos mediante un análisis de regresión logística. Se demuestra en la presente investigación, estadísticamente, el significado de la mayor parte de las variables consideradas en este trabajo. También se corrobora que los factores utilizados en otros estudios y ámbitos geográficos son igualmente valiosos en países latinoamericanos.

Tallinna Ülikooli Balti Filmi- ja Meediakooli õppehoone Nova = Tallinn University Baltic Film and Media School "Nova"

Index Scriptorium Estoniae

2015-01-01

Tallinna Ülikooli Balti Filmi- ja Meediakooli õppehoone "Nova" Narva maantee 27, valminud 2012. Arhitektuuri sihtkapitali arhitektuuripreemia 2012 ja Arhitektuuri sihtkapitali sisearhitektuuripreemia 2013. Arhitektid Maarja Kask, Karli Luik, Ralf Lõoke, Pelle-Sten Viiburg (Salto Arhitektid). Sisearhitektid Ville Lausmäe, Kadi Karmann (VLS). Mööbel Ville Lausmäe, Tõnis Kalve. Konstruktor Jaanus Natka (EA Reng)

Los carteles del narcotráfico en el Fútbol Profesional Colombiano: estructura de oportunidad

OpenAIRE

Mejía Morales, Juan Felipe

2014-01-01

El interés de este trabajo de grado es analizar la incidencia que ha tenido la estructura de oportunidad en la participación de los carteles del narcotráfico en el Fútbol Profesional colombiano. Este elemento es fundamental para entender este fenómeno pues desviste la arbitrariedad con la que se ha pretendido entender la entrada de estos colectivos al Fútbol. Igualmente, desde los conceptos teóricos de Charles Tilly, Sidney Tarrow y Doug McAdam, se evalúan los patrones de comportamiento de es...

Modal testing and analysis of NOVA laser structures

International Nuclear Information System (INIS)

Burdick, R.B.; Weaver, H.J.; Pastrnak, J.W.

1984-09-01

NOVA, currently the world's most powerful laser system, is an ongoing project at the Lawrence Livermore National Laboratory in California. The project seeks to develop a feasible method of achieving controlled fusion reaction, initiated by multiple laser beams targeted on a tiny fuel pellet. The NOVA system consists of several large steel framed structures, the largest of which is the Target Chamber Tower. In conjunction with design engineers, the tower was first modelled and analyzed by sophisticated finite element techniques. A modal test was then conducted on the tower structure to evaluate its vibrational characteristics and seismic integrity as well as for general comparison to the finite element results. This paper will discuss the procedure used in the experimental modal analysis and the results obtained from that test

The planned Shopping Center as a generator of a new develpmente city district: the example of Catuaí Shopping Center in Londrina O Shopping Center planejado, como gerador de um novo (sub centro de desenvolvimento: o exemplo do Catuaí Shopping Center de Londrina

Directory of Open Access Journals (Sweden)

Maria Luiza Fava Grassiotto

2007-11-01

ção imobiliária do entorno; o poder de atração de investimentos e de novas atividades, além de sua performance como agente modificador do uso do solo, são discutidas. Enfim, salienta-se o papel do centro comercial como instrumento de progresso ao seu redor, de transformação social e mudança de comportamento, propiciando no decorrer de seu processo evolutivo, o desenvolvimento de um (sub centro característico e uma nova centralidad.

A theoretical study of problems in classical nova evolution

International Nuclear Information System (INIS)

Shankar, A.

1990-01-01

Three distinct issues in classical nova evolution are addressed with the aid of one- and two-dimensional numerical hydrodynamics. The effects of convection on nova outbursts are examined within the confines of the mixing length theory. It is found that increasing the efficiency of convection enhances the violence of the thermonuclear runaway (TNR). This also relates to the question of the feasibility of obtaining nova outbursts on magnetic white dwarfs among the AM Her systems. The effects of a strong magnetic field on the TNR are explored. The field interferes with the development of convection during the TNR, which results in lower ejection velocities. However, for field strengths typical of cataclysmic variables, the violence of strong outbursts is affected only moderately. The conditions necessary for the production of strong TNR's in the hibernation model of cataclysmic binary evolution are also examined. The feasibility of obtaining strong nova outbursts is investigated when the accretion rate during hibernation is decreased. It is found that a reduction (by a factor of 100) for periods of longer than a couple thousand years, is sufficient to ensure violent outbursts, even in the presence of large pre-outburst accretion rates. The effects of a common envelope phase (CEP) on the outburst are discussed. The motion of the secondary through an expanding common envelope is resisted by frictional drag. This dissipates both energy and angular momentum from the orbit inducing hydrodynamic motion. Significant departures are found to occur in the manner in which mass is lost when the effects of drag are taken into account. Specifically, a CEP is found to accelerate and enhance mass loss. Ejection is found to be concentrated in the orbital plane, with velocities of a few thousand km/sec

Message Correlation Analysis Tool for NOvA

International Nuclear Information System (INIS)

Lu Qiming; Biery, Kurt A; Kowalkowski, James B

2012-01-01

A complex running system, such as the NOvA online data acquisition, consists of a large number of distributed but closely interacting components. This paper describes a generic real-time correlation analysis and event identification engine, named Message Analyzer. Its purpose is to capture run time abnormalities and recognize system failures based on log messages from participating components. The initial design of analysis engine is driven by the data acquisition (DAQ) of the NOvA experiment. The Message Analyzer performs filtering and pattern recognition on the log messages and reacts to system failures identified by associated triggering rules. The tool helps the system maintain a healthy running state and to minimize data corruption. This paper also describes a domain specific language that allows the recognition patterns and correlation rules to be specified in a clear and flexible way. In addition, the engine provides a plugin mechanism for users to implement specialized patterns or rules in generic languages such as C++.

Message Correlation Analysis Tool for NOvA

CERN Multimedia

CERN. Geneva

2012-01-01

A complex running system, such as the NOvA online data acquisition, consists of a large number of distributed but closely interacting components. This paper describes a generic realtime correlation analysis and event identification engine, named Message Analyzer. Its purpose is to capture run time abnormalities and recognize system failures based on log messages from participating components. The initial design of analysis engine is driven by the DAQ of the NOvA experiment. The Message Analyzer performs filtering and pattern recognition on the log messages and reacts to system failures identified by associated triggering rules. The tool helps the system maintain a healthy running state and to minimize data corruption. This paper also describes a domain specific language that allows the recognition patterns and correlation rules to be specified in a clear and flexible way. In addition, the engine provides a plugin mechanism for users to implement specialized patterns or rules in generic languages such as C++.

Message correlation analysis tool for NOvA

Energy Technology Data Exchange (ETDEWEB)

Lu, Qiming [Fermilab; Biery, Kurt A. [Fermilab; Kowalkowski, James B. [Fermilab

2012-01-01

A complex running system, such as the NOvA online data acquisition, consists of a large number of distributed but closely interacting components. This paper describes a generic real-time correlation analysis and event identification engine, named Message Analyzer. Its purpose is to capture run time abnormalities and recognize system failures based on log messages from participating components. The initial design of analysis engine is driven by the data acquisition (DAQ) of the NOvA experiment. The Message Analyzer performs filtering and pattern recognition on the log messages and reacts to system failures identified by associated triggering rules. The tool helps the system maintain a healthy running state and to minimize data corruption. This paper also describes a domain specific language that allows the recognition patterns and correlation rules to be specified in a clear and flexible way. In addition, the engine provides a plugin mechanism for users to implement specialized patterns or rules in generic languages such as C++.

Superoutburst of a New Sub-Period-Minimum Dwarf Nova CSS130418 in Hercules

Directory of Open Access Journals (Sweden)

D. Chochol

2015-02-01

Full Text Available Multicolour photometry of a new dwarf nova CSS130418 in Hercules, which underwent superoutburst on April 18, 2013, allow to classified it as a WZ Sge-type dwarf nova. The phase light curves for different stages of superoutburst are presented. The early superhumps were used to determine the orbital period Porb = 64.84(1 minutes, which is shorter than the period minimum ~78 minutes for normal hydrogen-rich cataclysmic variables. We found the mean period of ordinary superhumps Psh = 65.559(1 minutes. The quiescent spectrum is rich in helium, showing double peaked emissionlines of H I and He I from accretion disk, so the dwarf nova is in a late stage of stellar evolution.

Quark-Nova Explosion inside a Collapsar: Application to Gamma Ray Bursts

Directory of Open Access Journals (Sweden)

Rachid Ouyed

2009-01-01

Full Text Available If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides with the stellar envelope creating an outward moving cap (Γ∼ 1–10 above the polar funnel. Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star becomes visible after the cap becomes optically thin. Model features include (i precursor activity (optical, X-ray, γ-ray, (ii prompt γ-ray emission, and (iii afterglow emission. We discuss SN-less long duration GRBs, short hard GRBs (including association and nonassociation with star forming regions, dark GRBs, the energetic X-ray flares detected in Swift GRBs, and the near-simultaneous optical and γ-ray prompt emission observed in GRBs in the context of our model.

V2676 Oph: Estimating Physical Parameters of a Moderately Fast Nova

Science.gov (United States)

Raj, A.; Pavana, M.; Kamath, U. S.; Anupama, G. C.; Walter, F. M.

2018-03-01

Using our previously reported observations, we derive some physical parameters of the moderately fast nova V2676 Oph 2012 #1. The best-fit Cloudy model of the nebular spectrum obtained on 2015 May 8 shows a hot white dwarf source with TBB≍1.0×105 K having a luminosity of 1.0×1038 erg/s. Our abundance analysis shows that the ejecta are significantly enhanced relative to solar, He/H=2.14, O/H=2.37, S/H=6.62 and Ar/H=3.25. The ejecta mass is estimated to be 1.42×10-5 M⊙. The nova showed a pronounced dust formation phase after 90 d from discovery. The J-H and H-K colors were very large as compared to other molecule- and dust-forming novae in recent years. The dust temperature and mass at two epochs have been estimated from spectral energy distribution fits to infrared photometry.

THE EXPANDING BIPOLAR SHELL OF THE HELIUM NOVA V445 PUPPIS

International Nuclear Information System (INIS)

Woudt, P. A.; Warner, B.; Steeghs, D.; Marsh, T. R.; Karovska, M.; Roelofs, G. H. A.; Groot, P. J.; Nelemans, G.; Nagayama, T.; Smits, D. P.; O'Brien, T.

2009-01-01

From multi-epoch adaptive optics imaging and integral field unit spectroscopy, we report the discovery of an expanding and narrowly confined bipolar shell surrounding the helium nova V445 Puppis (Nova Puppis 2000). An equatorial dust disc obscures the nova remnant, and the outflow is characterized by a large polar outflow velocity of 6720 ± 650 km s -1 and knots moving at even larger velocities of 8450 ± 570 km s -1 . We derive an expansion parallax distance of 8.2 ± 0.5 kpc and deduce a pre-outburst luminosity of the underlying binary of log L/L sun = 4.34 ± 0.36. The derived luminosity suggests that V445 Puppis probably contains a massive white dwarf accreting at high rate from a helium star companion making it part of a population of binary stars that potentially lead to supernova Ia explosions due to accumulation of helium-rich material on the surface of a massive white dwarf.

The Expanding Bipolar Shell of the Helium Nova V445 Puppis

Science.gov (United States)

Woudt, P. A.; Steeghs, D.; Karovska, M.; Warner, B.; Groot, P. J.; Nelemans, G.; Roelofs, G. H. A.; Marsh, T. R.; Nagayama, T.; Smits, D. P.; O'Brien, T.

2009-11-01

From multi-epoch adaptive optics imaging and integral field unit spectroscopy, we report the discovery of an expanding and narrowly confined bipolar shell surrounding the helium nova V445 Puppis (Nova Puppis 2000). An equatorial dust disc obscures the nova remnant, and the outflow is characterized by a large polar outflow velocity of 6720 ± 650 km s-1 and knots moving at even larger velocities of 8450 ± 570 km s-1. We derive an expansion parallax distance of 8.2 ± 0.5 kpc and deduce a pre-outburst luminosity of the underlying binary of log L/L sun = 4.34 ± 0.36. The derived luminosity suggests that V445 Puppis probably contains a massive white dwarf accreting at high rate from a helium star companion making it part of a population of binary stars that potentially lead to supernova Ia explosions due to accumulation of helium-rich material on the surface of a massive white dwarf.

La experiencia del Centro Centroamericano de Población

Directory of Open Access Journals (Sweden)

Carmen Marín

2006-01-01

Full Text Available Introducción.- Las NTIC abren nuevas posibilidades para la educación. Aprender en entornos mediados por NTIC supone flexibilidad en espacio y tiempo e interacción entre los participantes para el aprendizaje significativo. Las universidades al implementar ofertas formativas de carácter virtual deben reconsiderar sus modelos de enseñanza y de aprendizaje e iniciar procesos de análisis y revisión de las experiencias realizadas. El presente artículo pretende sistematizar el accionar del proyecto CapDis del Centro Centroamericano de Población (CCP al introducir el uso de las nuevas tecnologías de información y comunicación en la educación superior en la Universidad de Costa Rica (UCR. Métodos.- Se basa en un estudio de caso que aplica el método cualitativo mediante revisión documental y registro de eventos. Resultados.- En CapDis se identifican las siguientes etapas: I. Páginas web vinculadas; II. Páginas web integradas y III. Learning Management System. En las primeras dos etapas se dio soporte a los profesores y se asumió la mayor parte de las tareas de implementación y mantenimiento. Cuando se incorporó moodle.org, se facilitó la participación de más profesores quienes asumieron un rol más activo en CapDis. A marzo 2005, la comparación de metas y resultados evidencia que fueron superados los resultados esperados. Discusión.- El presente artículo se constituye en un insumo útil en la identificación de las dificultades, alcances y limitaciones de la incorporación de las NTIC en la docencia en educación superior en la Universidad de Costa Rica. Las etapas identificadas en CapDis han sido descritas en términos del alcance de los recursos NTIC puestos en práctica. Más allá de los aspectos tecnológicos y administrativos descritos, el proceso seguido por CapDis logró enriquecer la interacción de una modalidad asíncrona (diferida a una síncrona (inmediata, lo que abre la oportunidad de contribuir a una mejor

Deep Convolutional Networks for Event Reconstruction and Particle Tagging on NOvA and DUNE

CERN Multimedia

CERN. Geneva

2017-01-01

Deep Convolutional Neural Networks (CNNs) have been widely applied in computer vision to solve complex problems in image recognition and analysis. In recent years many efforts have emerged to extend the use of this technology to HEP applications, including the Convolutional Visual Network (CVN), our implementation for identification of neutrino events. In this presentation I will describe the core concepts of CNNs, the details of our particular implementation in the Caffe framework and our application to identify NOvA events. NOvA is a long baseline neutrino experiment whose main goal is the measurement of neutrino oscillations. This relies on the accurate identification and reconstruction of the neutrino flavor in the interactions we observe. In 2016 the NOvA experiment released results for the observation of oscillations in the ν μ → ν e channel, the first HEP result employing CNNs. I will also discuss our approach at event identification on NOvA as well as recent developments in the application of CNN...

El análisis de las fortalezas, oportunidades, debilidades y amenazas en un grupo de empresas del estado de Jalisco

Directory of Open Access Journals (Sweden)

Silvio Hernández Cotón

2016-02-01

Full Text Available Los procesos de planeación estratégica se convierten en esenciales para dirigir los cambios de la organización y proporcionan las condiciones en la toma de decisiones gerenciales. Los resultados aquí expuestos son parte del problema general abordado en la línea de investigación sobre el pensamiento estratégico de las empresas de Jalisco, desarrollado por el Departamento de Mercadotecnia y Negocios Internacionales del CUCEA, y se refieren a la identificación de las tendencias que puedan hallarse en las debilidades, amenazas, fortalezas, y oportunidades que se presentan ante las empresas.  Se analizan los resultados de la investigación, obtenidos en 30 empresas de Jalisco durante 2003 y 2004, comparándolos con los resultados obtenidos en otras 54 empresas de Jalisco en la investigación realizada en 2002, en las que se identificaron las cinco principales fortalezas, oportunidades, debilidades y amenazas de cada empresa, así como las coincidencias.

Towards sustainable seed production of centro in Uganda

African Journals Online (AJOL)

Uganda Journal of Agricultural Sciences, 2000, 5: 13- 15. Printed in Uganda. ... cassava tuber yield. Production costs of I kg of seed were Shs 1200, 2000 and 3700 for centro ... of cassava are the second most important staple food of those ...

Infrared spectroscopy of the remnant of Nova Sco 2014: a symbiotic star with too little circumstellar matter to decelerate the ejecta

Science.gov (United States)

Munari, U.; Banerjee, D. P. K.

2018-03-01

Pre-outburst 2MASS and WISE photometry of Nova Sco 2014 (V1534 Sco) has suggested the presence of a cool giant at the location of the nova in the sky. The spectral evolution recorded for the nova did not, however, support a direct partnership because no flash-ionized wind and no deceleration of the ejecta were observed, contrary to the behaviour displayed by other novae which erupted within symbiotic binaries like V407 Cyg or RS Oph. We have therefore obtained 0.8-2.5 μm spectra of the remnant of Nova Sco 2014 in order to ascertain if a cool giant is indeed present and if it is physically associated with the nova. The spectrum shows the presence of a M6III giant, reddened by E(B - V) = 1.20, displaying the typical and narrow emission-line spectrum of a symbiotic star, including He I 1.0830 μm with a deep P-Cyg profile. This makes Nova Sco 2014 a new member of the exclusive club of novae that erupt within a symbiotic binary. Nova Sco 2014 shows that a nova erupting within a symbiotic binary does not always come with a deceleration of the ejecta, contrary to the common belief. Many other similar systems may lay hidden in past novae, especially in those that erupted prior to the release of the 2MASS all-sky infrared survey, which could be profitably cross-matched now against them.

Optical components for the Nova laser

International Nuclear Information System (INIS)

Wallerstein, E.P.; Baker, P.C.; Brown, N.J.

1982-01-01

In addition to its other characteristics, the Nova Laser Fusion facility may well be the largest precision optical project ever undertaken. Moreover, during the course of construction, concurrent research and development has been successfully conducted, and has resulted in significant advances in various technical areas, including manufacturing efficiency. Although assembly of the first two beams of Nova is just commencing, the optical production, including construction of the special facilities required for many of the components, has been underway for over three years, and many phases of the optical manufacturing program for the first 10 beams will be completed within the next two years. On the other hand, new requirements for second and third harmonic generation have created the need to initiate new research and development. This work has been accomplished through the enormous cooperation DOE/LLNL has received from commercial industry on this project. In many cases, industry, where much of the optical component research and development and virtually all of the manufacturing is being done, has made substantial investment of its own funds in facilities, equipment, and research and development, in addition to those supplied by DOE/LLNL

The Nova-Canton Trough and the Late Cretaceous evolution of the central Pacific

Science.gov (United States)

Joseph, Devorah; Taylor, Brain; Shor, Alexander N.; Yamazaki, Toshitsugu

Free-air gravity anomalies derived from satellite altimetry data show that the major Pacific fracture zones, from the Pau to Marquesas, are co-polar about an Euler pole located at 150.5°W, 34.6°S for the period preceding chron 33 and including a large portion of the Cretaceous Normal Superchron. They also show continuity of the Clipperton Fracture Zone through the Line Islands to the Nova-Canton ridge and trough; this Canton-Clipperton trend is co-polar to the same pole. Sidescan-sonar and bathymetry data in the Nova-Canton Trough region reveal N140°E-striking abyssal hill topography south of the N70°E-striking structures of the Nova-Canton Trough and crustal fabric striking normal to the trough (N160°E) to the north. We conclude that the Nova-Canton Trough is the Middle Cretaceous extension of the Clipperton Fracture Zone. We propose that the anomalous depths (7000-8400 m) of the trough between 167°30'-168°30'W are the result of a complex plate reorganization. Conjugate magnetic anomaly lineations M1-M3 in the Phoenix lineations between the Central Pacific Fracture Zone and the Phoenix Fracture Zone and the absence of lineations younger than anomaly M3 west of the Phoenix Fracture Zone suggest that spreading may have gradually ceased along the Pacific-Phoenix system from west to east. We infer that the remaining active segment of the Pacific-Phoenix spreading system after anomaly M1 time was the easternmost section of the Phoenix lineations. At ˜M0 time, the Pacific-Phoenix spreading axis stretched from lineated bathymetric depressions lying between 180°W and the Phoenix Islands to ˜168°W and included the western deep of the Nova-Canton Trough. We hypothesize that accretion terminated on the Pacific-Phoenix spreading axis shortly after M0 time and that the absence of an M0 isochron in the region between the eastern Phoenix lineations and the Nova-Canton Trough, or along the Nova-Canton Trough itself, may be due to a decrease in spreading rate prior to

Three-dimensional simulations of Nova capsule implosion experiments

International Nuclear Information System (INIS)

Marinak, M.M.; Tipton, R.E.; Landen, O.L.

1995-01-01

Capsule implosion experiments carried out on the Nova laser are simulated with the three-dimensional HYDRA radiation hydrodynamics code. Simulations of ordered near single mode perturbations indicate that structures which evolve into round spikes can penetrate farthest into the hot spot. Bubble-shaped perturbations can burn through the capsule shell fastest, however, causing even more damage. Simulations of a capsule with multimode perturbations shows spike amplitudes evolving in good agreement with a saturation model during the deceleration phase. The presence of sizable low mode asymmetry, caused either by drive asymmetry or perturbations in the capsule shell, can dramatically affect the manner in which spikes approach the center of the hot spot. Three-dimensional coupling between the low mode shell perturbations intrinsic to Nova capsules and the drive asymmetry brings the simulated yields into closer agreement with the experimental values

Decision 97.02 : Application for approval of the Terra Nova Canada-Newfoundland benefits plan and the Terra Nova development plan

International Nuclear Information System (INIS)

1997-12-01

Petro-Canada applied to the Canada-Newfoundland Offshore Petroleum Board (the Board) for approval of its plan for the development of the Terra Nova oil and gas field of the Jeanne d'Arc Formation located about 35 km southeast of the Hibernia oilfield. Petro-Canada also submitted a benefits plan. The Board established the Terra Nova Project Environmental Assessment Panel to conduct a public review of the application and to ensure that the potential effects of the project upon the natural environment would be minimal. The Panel recommended approval of the application, subject to 75 recommendations. The Board considered the recommendations of the Panel and approved the Benefits Plan and the Development Plan subject to certain conditions being met. This document provides the details of the application, the bases for the Board's decision, the conditions imposed, and the 75 recommendations made by the Environmental Assessment Panel. . 6 tabs., 6 figs

Relações contratuais e perfil dos cirurgiões-dentistas em centros de especialidades odontológicas de baixo e alto desempenho no Brasil

Directory of Open Access Journals (Sweden)

Raquel Santos de Oliveira

2015-09-01

Full Text Available Introdução: No Brasil, a partir da década de 1990, quando foram implementadas novas modalidades contratuais flexíveis na administração pública, tem se destacado o debate sobre as relações de trabalho. Esse movimento de mudanças tem repercutido no sistema público de saúde pela tendência à instabilidade dos vínculos laborais e à desproteção social. Objetivo: Investigar o perfil profissional de cirurgiões-dentistas dos centros de especialidades odontológicas e analisar a natureza das relações de trabalho em vigor nos contratos firmados entre esses profissionais e os municípios. Metodologia:O estudo, de natureza exploratória, foi realizado a partir de entrevistas semiestruturadas com 289 profissionais alocados em 59 centros de especialidades odontológicas das 5 macrorregiões do país, selecionados entre os 10% com melhor e pior desempenho na produção de procedimentos. Resultados:Entre os profissionais investigados, a maioria era do sexo feminino (55,0%. Quanto à qualificação profissional, 72,7% do total dos entrevistados afirmaram ter cursado ou estar cursando pós-graduação no momento da entrevista. A presença de vínculos precários e a instabilidade laboral sobressaem nas entrevistas, o que evidencia algumas distinções entre as macrorregiões do país. Conclusões:Ao ressaltar o debate sobre o conceito de trabalho precário, os autores reafirmam que essa condição se faz presente no espaço da Política Nacional de Saúde Bucal implementada por estados e municípios.

El libro electrónico en Latinoamérica: retos y oportunidades

Directory of Open Access Journals (Sweden)

Alberto Vicente

2014-12-01

Full Text Available El español es una lengua con importantes problemas estructurales en la distribución de libros impresos, motivados por la lejanía de los distintos centros de creación (Madrid, Barcelona, México, Buenos Aires que genera altos sobrecostos en la importación y exportación. Los contratos firmados, principalmente, por editoriales españolas con cláusulas de exclusividad sobre el idioma español para todo el mundo, y la falta de centros de producción en América Latina, más allá de algunos grandes gr upos, hacen que la mayor parte de los libros publicados se hagan en España y lleguen a América con el precio duplicado; es decir, prohibitivo y solo al alcance de las élites culturales de los países, si tenemos en cuenta el ingreso per cápita de cada uno de ellos.

A PREDICTION FORMULA OF SUPERSOFT X-RAY PHASE OF CLASSICAL NOVAE

International Nuclear Information System (INIS)

Hachisu, Izumi; Kato, Mariko

2010-01-01

On the basis of the recently developed universal decline law of classical novae, we propose prediction formulae for supersoft X-ray on and off times, i.e., t X-on = (10 ± 1.8)t 3 days and t X-off = (5.3 ± 1.4)(t 3 ) 1.5 days for 8 ∼ 3 ∼ 3 is the newly proposed 'intrinsic' decay time during which the brightness drops by 3 mag from optical maximum along our universal decline law fitted with observation. We have determined the absolute magnitude of our free-free emission model light curves and derived maximum magnitude versus rate of decline (MMRD) relations. Our theoretical MMRD relations are governed by two parameters, one is the white dwarf (WD) mass and the other is the initial envelope mass at a nova outburst; this second parameter explains the scatter of MMRD points of individual novae. Our theoretical MMRD relations are also in good agreement with the well-known empirical formulae. We also show another empirical relation of M V (15) ∼ -5.7 ± 0.3 based on the absolute magnitude of our model light curves, i.e., the absolute magnitude at 15 days after optical maximum is almost common among various novae. We analyzed 10 nova light curves, in which a supersoft X-ray phase was detected, and estimated their WD masses. The models best simultaneously reproducing the optical and supersoft X-ray observations are ONeMg WDs with 1.28 ± 0.04 M sun (V598 Pup), 1.23 ± 0.05 M sun (V382 Vel), 1.15 ± 0.06 M sun (V4743 Sgr), 1.13 ± 0.06 M sun (V1281 Sco), 1.2 ± 0.05 M sun (V597 Pup), 1.06 ± 0.07 M sun (V1494 Aql), 1.04 ± 0.07 M sun (V2467 Cyg), 1.07 ± 0.07 M sun (V5116 Sgr), 1.05 ± 0.05 M sun (V574 Pup), and a CO WD with 0.93 ± 0.08 M sun (V458 Vul). The newly proposed relationships are consistent with the emergence or decay epoch of the supersoft X-ray phase of these 10 novae. Finally, we discuss the mechanism of shock-origin hard X-ray component in relation to the emergence of companion star from the WD envelope.

MAPEAMENTO DAS ÁREAS SUSCETÍVEIS À EROSÃO HÍDRICA NOS MUNICÍPIOS DE CALDAS NOVAS, NOVA AMÉRICA E RIO QUENTE (GO MAPPING THE EROSION SUSCEPTIBLE AREAS OF CALDAS NOVAS, NOVA AMÉRICA AND RIO QUENTE, GOIÁS - BRASIL

Directory of Open Access Journals (Sweden)

Luiz Fernando Coutinho de Oliveira

2007-09-01

Full Text Available

A importância de mapear as áreas suscetíveis à erosão hídrica nos municípios de Caldas Novas, Nova América e Rio Quente deve-se ao fato de que eles apresentaram os maiores índices de precipitação pluviométrica e pelo potencial que os mesmos representam para o estado de Goiás, principalmente o turístico. Na elaboração desses mapas, estabeleceram-se preliminarmente os planos de informação referentes às classes de solo, à declividade e ao uso do solo através de digitalização, empregando o software SGI/INPE, e a espacialização da intensidade de precipitação com duração de 30 minutos sobre a base cartográfica dos municípios, obtendo assim os mapas temáticos. Através do cruzamento dos mapas temáticos, foram classificadas e mapeadas as áreas suscetíveis à erosão hídrica. A metodologia empregada mostrou-se satisfatória, permitindo gerar os mapas temáticos das áreas suscetíveis à erosão hídrica nos municípios estudados que servirão de orientação para os trabalhos de campo.

PALAVRAS-CHAVE: Erosão; sistema de informação geográfica; conservação do solo.

The importance of mapping the erosion susceptible areas of Caldas Novas, Nova América and Rio Quente is that these municipalities present high rainfall rates and the potential they represent for the Goiás state, mostly for tourism. As a preliminary to elaborate these maps the soil type, slope and use of classes information were planned through digitalization using the SGI/INPE software, and a spatialization of the 30 minutes rainfall intensity over the municipalities cartographic base, obtaining the thematic maps. Through thematic maps crossing, the erosion susceptible areas were classified and mapped. The methodology used was considered satisfactory and generated the thematic

Aplicación del modelo Servperf en los centros de atención Telcel, Hermosillo: una medición de la calidad en el servicio

Directory of Open Access Journals (Sweden)

Luis Enrique Ibarra Morales

2015-01-01

Full Text Available La globalización de los mercados y la fuerte competencia en los sectores industriales han convertido la satisfacción de las necesidades de los clientes en un importante objetivo estratégico para las empresas que compiten por un segmento de mercado; el logro de esto supone una sólida ventaja competitiva en cuanto a la diferenciación en los servicios. Es importante mencionar que la mayoría de las veces el cliente tiene una sola oportunidad para evaluar un servicio en términos de calidad y satisfacción; en ese sentido, muchas empresas han desarrollado instrumentos para evaluar la calidad del servicio como parte de la mejora continua. El presente trabajo de investigación propone usar un cuestionario estandarizado de 15 ítems, mediante el modelo Servperf (Service Performance propuesto por Cronin y Taylor (1992, el cual recoge la percepción del cliente en el desempeño de la calidad del servicio otorgado. Se trabajó con los cinco centros de atención a clientes Telcel, localizados en Hermosillo, Sonora; el objetivo fue identificar qué factores determinan la satisfacción del cliente por medio de la calidad del servicio, aplicando el modelo Servperf, para demostrar si existe una relación positiva entre el servicio y el grado de satisfacción del cliente.

Gilberto Freyre e a nova história Gilberto Freyre and the new history

Directory of Open Access Journals (Sweden)

Peter Burke

1997-10-01

Full Text Available O ponto de partida deste artigo é uma série de semelhanças entre a 'nova história' associada aos Annales e a história social, psico-história ou antropologia histórica de Gilberto Freyre; semelhanças que vão desde um interesse pela cultura material (alimentação, vestimenta e habitação até um interesse pelas mentalidades e pela história da infância, tema que preocupou Freyre antes da publicação de Casa-grande & senzala. Estas semelhanças de abordagem foram reconhecidas tanto por Febvre como por Braudel quando descobriram a obra de Freyre no fim dos anos 30. Freyre, no entanto, não estava imitando o Annales e nem Febvre ou Braudel o estavam imitando. Freyre aprendera seu estilo interdisciplinar na Universidade Columbia, um centro do movimento americano da 'nova história' no início do século. Por outro lado, assim como Febvre, Freyre também admirava Michelet. Já a 'história íntima' de Freyre é, em algum grau, devedora da Histoire Intime praticada pelos irmãos Goncourt, uma história cuja importância para a história da historiografia ainda não foi suficientemente reconhecida.The point of departure of this article is a series of similarities between the 'new history' associated with the French journal Annales, and the social history, psycho-history or historical anthropology of Gilberto Freyre; similarities which range from a concern with material culture (food, clothes and housing, to an interest in mentalities and the history of childhood, a theme which preoccupied Freyre in the years before he published Casa-grande & senzala. These similarities of approach were recognized by both Febvre and Braudel when they discovered Freyre's work in the later 1930s. Freyre was not imitating Annales, nor were Febvre and Braudel imitating him. He learned his interdisciplinary style at Columbia, a centre of the American 'new history' movement of the beginning of the century. However, Freyre was, like Febvre, admirer of Michelet. His

Gas distribution regulations (Nova Scotia)

Energy Technology Data Exchange (ETDEWEB)

NONE

1998-11-03

A consolidation of Nova Scotia`s gas distribution regulations made under subsection 42(1) of the Gas Distribution Act S.N.S. 1997, c4 - O.I.C. 1998-576 (November 10, 1998), N.S. Reg. 86/98 are presented. The consolidation is issued for reference purposes only, and while it has no official sanction, it is considered useful in providing an interpretation of the regulation, explaining franchise evaluation, the granting of franchises, and exemptions from application requirements. 1 tab.

CENTRO DE FORMAÇÃO DE RECURSOS HUMANOS EM TRANSPORTES URBANOS - CEFTRU

Directory of Open Access Journals (Sweden)

Jose Augusto Abreu Sá Fortes

2010-04-01

Full Text Available

O presente trabalho irá apresentar questões referentes a criação do Centro de Formação de Recursos Humanos em Transportes Urbanos - CEFTRU. Tal Centro é um projeto bilateral entre os governos brasileiro e japonês, de iniciativa do Mestrado em Transportes Urbanos da Universidade de Brasília (UnB, sob os auspícios de Ministério das Relações Exteriores - Agencia Brasileira de Cooperação - MRE/ABC e da Japan International Cooperation Agency - JICA. O projeto visa a constituição e a posterior consolidação de um centro de excelência para a capacitação e a reciclagem de pessoal de nível superior, médio e fundamental em transportes urbanos, envolvendo as áreas de planejamento, gestão e operação do sistema, com impactos socioeconômicos para as populações urbanas. O Centro tem por objetivo melhorar a qualificação de pessoal envolvido com os transportes urbanos da administração publica e privada, englobando o território nacional, nas áreas de meio ambiente, informática e ensino a distancia e tecnologia de transportes e tráfego.

Os Saberes tradicionais e o modo de vida camponês como elementos para a compreensão de uma nova forma de organização camponesa : o exemplo de Nova Padua/RS

OpenAIRE

Tiago Oliveira Nicoloso

2006-01-01

O presente trabalho busca analisar a importância dos saberes tradicionais e do modo de vida camponês como elementos para a compreensão de uma nova forma de organização camponesa a partir do exemplo de Nova Pádua/RS. Para tanto, é fundamental buscar no processo de colonização italiana no Rio Grande do Sul e, conseqüentemente, na história de formação de Nova Pádua, os fatores que permitem compreender os vínculos culturais com a Itália manifestos ainda hoje de forma tão intensa. Da mesma forma, ...

NuMI Flux Predictions for NOvA and MINERvA

Science.gov (United States)

Aliaga Soplin, Leonidas; Nova Collaboration; Minerva Collaboration

2017-01-01

The determination of the neutrino flux in any conventional neutrino beam presents a challenge for the current and future short and long baseline neutrino experiments. The uncertainties associated with the production and attenuation of the hadrons in the beamline materials along with those associated with the beam optics have a big effect in the knowledge of the flux. For experiments like MINERvA and NOvA, understanding the flux is crucial since it enters directly into every neutrino-nucleus cross-section measurement. The majority of this work involves predicting the neutrino flux using dedicated hadron production measurements from hadron-nucleus collisions. The predictions at the MINERvA and NOvA near detectors are presented as well as the results of incorporating in-situ MINERvA data that can provide additional constraints. These results have been fully implemented in MINERvA and they are currently use for its cross-section analysis. The implementation for NoVA is underway. The procedure and conclusions of this work will have a big impact on future hadron production experiments and on determining the flux for the upcoming DUNE experiment.

Desafíos en la transferencia de tecnología a los centros educativos

Directory of Open Access Journals (Sweden)

José PEIRATS CHACÓN

2013-07-01

Full Text Available Partimos del modelo de transferencia de tecnología para analizar cómo los centros escolares reciben e incorporan a sus actividades los equipamientos tecnológicos. Particularmente analizamos las innovaciones generadas por esos procesos en el plano organizativo de los centros como receptores de la tecnología. Los datos analizados se desagregan de una investigación que actualmente se está realizando en 12 comunidades autónomas sobre el programa Escuela 2.0. En esta fase manejamos estadígrafos descriptivos y referencias de algunas de las entrevistas y de las observaciones de aula realizadas en los centros que participan en el proyecto «centro educativo inteligente». Los primeros análisis nos permiten señalar que en el caso del sistema escolar se sigue un patrón de transferencia muy peculiar: alta dependencia de las instancias políticas, se pone más énfasis en el equipamiento instrumental que en el conocimiento y, finalmente, escasa preparación previa de la organización receptora.

ULF fluctuations at Terra Nova Bay (Antarctica

Directory of Open Access Journals (Sweden)

A. Meloni

2000-06-01

Full Text Available ULF geomagnetic field measurements in Antarctica are a very important tool for better understanding the dynamics of the Earth’s magnetosphere and its response to the variable solar wind conditions. We review the results obtained in the last few years at the Italian observatory at Terra Nova Bay

Coalfields west half Cumberland County, Nova Scotia

Energy Technology Data Exchange (ETDEWEB)

Copeland, M J

1958-01-01

A geologic survey of the coal fields of the western half of Cumberland County, Nova Scotia was performed including studies of the structural geology, stratigraphy, and paleontology of the area. One part of this survey included a spectrographic analysis of 55 coals for 23 elements. These analyses are presented in tabular form.

The electrification of Nova Scotia, 1884--1973: Technological modernization as a response to regional disparity

Science.gov (United States)

King, Lionel Bradley

This dissertation investigates local attempts to use technology as a force for regional rehabilitation in the economically-depressed Maritime region of Canada. At the time of Confederation in 1867, the Maritime province of Nova Scotia was prosperous, progressive, and cultured. By the end of the 1910s, the province had entered a long period of economic and social decline. Recent historiography has shown that, far from passively accepting their fate, Nova Scotians and other Maritimers, actively resisted marginalization with political, cultural, or social action. The thesis expands upon that literature by exploring technology-based strategies of provincial rehabilitation using Thomas P. Hughes's systems perspective and David E. Nye's semiotic approach. In doing so, it applies methods from the social constructivist school of the history of technology to the larger concerns of Maritime Canadian historiography. In large part, the North American culture of technology determined the ways in which Nova Scotians applied technological solutions to provincial concerns. Technology has long been central to the Western idea of progress. As the "high technology" of the late nineteenth and early twentieth centuries, electricity reinforced that view: its ephemeral nature and silent efficiency led people to endow it with transformative, even mystical, powers. As a result, Nova Scotians, adopted a program of electrical modernization in the late 1910s as a remedy for regional disparity. The Nova Scotia government's first step was the creation of an Ontario-style hydroelectric commission designed to bring order to the province's fragmented and inefficient electrical network. Over the next few decades, the Nova Scotia Power Commission implemented rural electrification, home modernization, and regional system-building models that had already proven successful in Ontario and the United States. The system-building philosophies behind these programs were adapted to local conditions and

La dimensión colaborativa con tic en la dirección de centros

Directory of Open Access Journals (Sweden)

L. M. González Rodero

2013-01-01

Full Text Available El presente trabajo busca profundizar en la perspectiva e influencia del aprendizaje colaborativo a través de las TIC desde la gestión y dirección de centros educativos y como ello repercute en la formación del profesorado. Esta investigación forma parte de un proyecto que busca identificar la importancia y el grado de implantación de las tecnologías sociales en los centros de infantil y primaria de Castilla y León, a partir de una muestra de 24 centros de la Comunidad Autónoma acreditados con certificación TIC nivel 5 en el curso 2011-2012.

La economía de la salud, la eficiencia y el costo de oportunidad

OpenAIRE

Alberto Baly Gil; María Eugenia Toledo; Félix Rodríguez Jústiz

2001-01-01

Resumen La organización del sistema de salud en Cuba, que tiene como base la Atención Primaria de Salud, tendrá necesariamente que abordar el estudio y la implementación de la evaluación económica. La presente comunicación permite un acercamiento a conceptos relacionados con la Economía de la Salud. Se abordan las definiciones de economía, evaluación económica, eficiencia económica, costo, beneficio y costo de oportunidad, en el contexto de un ejemplo hipotético de un problema de salud en la ...

Oportunidades y amenazas para Colombia de pertenecer a la Alianza del Pacífico

OpenAIRE

Piedrahita Valencia, Paula Andrea

2015-01-01

Por medio de este proyecto se analizaron las asimetrías presentes en las economías de los cuatro países miembros de la Alianza del Pacífico y cómo Colombia puede enfrentar estos y retos y convertirlos en oportunidades de acuerdo a la experiencia en diferentes áreas de sus países aliados. De acuerdo a las bases de datos de los países firmantes se encontró que la balanza comercial entre Colombia y México presenta un déficit y está en constante crecimiento, pudiendo ser contrarrestada con fut...

New sidescan sonar and gravity evidence that the Nova-Canton Trough is a fracture zone

Science.gov (United States)

Joseph, Devorah; Taylor, Brian; Shor, Alexander N.

1992-05-01

A 1990 sidescan sonar survey in the eastern region of the Nova-Canton Trough mapped 138°-striking abyssal-hill fabric trending into 70°-striking trough structures. The location and angle of intersection of the abyssal hills with the eastern Nova-Canton Trough effectively disprove a spreading-center origin of this feature. Free-air gravity anomalies derived from satellite altimetry data show continuity, across the Line Islands, of the Nova-Canton Trough with the Clipperton Fracture Zone. The Canton-Clipperton trend is copolar, about a pole at 30°S, 152°W, with other coeval Pacific-Farallon fracture-zone segments, from the Pau to Marquesas fracture zones. This copolarity leads us to postulate a Pacific-Farallon spreading pattern for the magnetic quiet zone region north and east of the Manihiki Plateau, with the Nova-Canton Trough originating as a transform fault in this system.

NEAR-IR STUDIES OF RECURRENT NOVA V745 SCORPII DURING ITS 2014 OUTBURST

International Nuclear Information System (INIS)

Banerjee, D. P. K.; Joshi, Vishal; Venkataraman, V.; Ashok, N. M.; Raj, A.; Marion, G. H.; Hsiao, E. Y.

2014-01-01

The recurrent nova V745 Scorpii underwent its third known outburst on 2014 February 6. Infrared monitoring of the eruption on an almost daily basis, starting from 1.3 days after discovery, shows the emergence of a powerful blast wave generated by the high velocity nova ejecta exceeding 4000 km s –1 plowing into its surrounding environment. The temperature of the shocked gas is raised to a high value exceeding 10 8 K immediately after outburst commencement. The energetics of the outburst clearly surpass those of similar symbiotic systems like RS Oph and V407 Cyg which have giant secondaries. The shock does not show a free-expansion stage but rather shows a decelerative Sedov-Taylor phase from the beginning. Such strong shock fronts are known to be sites for γ-ray generation. V745 Sco is the latest nova, apart from five other known novae, to show γ-ray emission. It may be an important testbed to resolve the crucial question of whether or not all novae are generically γ-ray emitters by virtue of having a circumbinary reservoir of material that is shocked by the ejecta rather than γ-ray generation being restricted to only symbiotic systems with a shocked red giant (RG) wind. The lack of a free-expansion stage favors V745 Sco to have a density enhancement around the white dwarf (WD), above that contributed by a RG wind. Our analysis also suggests that the WD in V745 Sco is very massive and a potential progenitor for a future SN Ia explosion

Muon Neutrino Disappearance in NOvA with a Deep Convolutional Neural Network Classifier

Energy Technology Data Exchange (ETDEWEB)

Rocco, Dominick Rosario [Minnesota U.

2016-03-01

The NuMI Off-axis Neutrino Appearance Experiment (NOvA) is designed to study neutrino oscillation in the NuMI (Neutrinos at the Main Injector) beam. NOvA observes neutrino oscillation using two detectors separated by a baseline of 810 km; a 14 kt Far Detector in Ash River, MN and a functionally identical 0.3 kt Near Detector at Fermilab. The experiment aims to provide new measurements of Δm² and θ23 and has potential to determine the neutrino mass hierarchy as well as observe CP violation in the neutrino sector. Essential to these analyses is the classification of neutrino interaction events in NOvA detectors. Raw detector output from NOvA is interpretable as a pair of images which provide orthogonal views of particle interactions. A recent advance in the field of computer vision is the advent of convolutional neural networks, which have delivered top results in the latest image recognition contests. This work presents an approach novel to particle physics analysis in which a convolutional neural network is used for classification of particle interactions. The approach has been demonstrated to improve the signal efficiency and purity of the event selection, and thus physics sensitivity. Early NOvA data has been analyzed (2.74×10²⁰ POT, 14 kt equivalent) to provide new best- fit measurements of sin²(θ23) = 0.43 (with a statistically-degenerate compliment near 0.60) and |Δm2 | = 2.48 × 10^-3 eV².

Report on terrestrial biology research and logistics at Baia Terra Nova Station

Directory of Open Access Journals (Sweden)

Satoshi Imura

1999-11-01

Full Text Available From December 4,1998 to January 15,1999,the author stayed at Baia Terra Nova Station (Italy in Antarctica, as an exchange scientist. To compare the biodiversity between Syowa Station and the Baia Terra Nova Station area, many samples of mosses, lichens, algae and micro animals in the soil were collected, and the structure of moss vegetation was studied in various fields around the station. Some characteristic features of logistics at the station were also researched.

Impulso a la igualdad de oportunidades entre hombres y mujeres

Directory of Open Access Journals (Sweden)

Eliza Muñoz Catalán

2016-06-01

Full Text Available El necesario impulso que se le debe dar a la anhelada igualdad de género entre hombres y mujeres en nuestra sociedad actual, resulta objeto de análisis en la presente obra, a través de la cual, la profesora Iglesias Crespo nos adentra en la contextualización de las políticas de igualdad desde su fundamentación normativa a nivel internacional, comunitario, estatal y autonómico hasta una legislación como la presente que se encuentra marcada por la profunda crisis social, económica e incluso de valores que estamos sufriendo desde hace ya varios años; así como la misma analiza cuál es el alcance jurídico de las diferentes estrategias de promoción para la igualdad efectiva de mujeres y hombres, ya sea a través de medidas de acción positiva, estrategias como la “mainstreaming”, o planes de igualdad de oportunidades.

Oportunidades e desafios do serviço de referência : o caso da biblioteca do Tribunal de Contas

OpenAIRE

Pinto, Adelina Filomena Vera-Cruz

2016-01-01

Devido ao grande desenvolvimento das novas tecnologias, verificado ao longo dos últimos anos, as bibliotecas são confrontadas diariamente com novas ferramentas de pesquisa e de interação com os seus clientes. O Serviço de Referência, sendo aquele que dentro da biblioteca orienta, informa e responde às questões do utilizador e ajuda nas suas pesquisas (MANGAS, 2005), está de igual forma sujeito às evoluções constantes da sociedade e das tecnologias por ela usadas. Também o profissional de info...

Nova performance at ultra high fluence levels

International Nuclear Information System (INIS)

Hunt, J.T.

1986-01-01

Nova is a ten beam high power Nd:glass laser used for interial confinement fusion research. It was operated in the high power high energy regime following the completion of construction in December 1984. During this period several interesting nonlinear optical phenomena were observed. These phenomena are discussed in the text. 11 refs., 5 figs

Optical evolution of Nova Ophiuchi 2007 = V2615 Oph

Science.gov (United States)

Munari, U.; Henden, A.; Valentini, M.; Siviero, A.; Dallaporta, S.; Ochner, P.; Tomasoni, S.

2008-06-01

The moderately fast Nova Oph 2007 reached maximum brightness on 2007 March 28 at V= 8.52, B-V=+1.12, V-RC=+0.76, V-IC=+1.59 and RC-IC=+0.83, after fast initial rise and a pre-maximum halt lasting a week. Decline times were tV2= 26.5, tB2= 30, tV3= 48.5 and tB3= 56.5 d. The distance to the nova is d= 3.7 ± 0.2 kpc, the height above the Galactic plane is z= 215 pc, the reddening is E(B-V) = 0.90 and the absolute magnitude at maximum is MmaxV=-7.2 and MmaxB=-7.0. The spectrum four days before maximum resembled a F6 supergiant, in an agreement with broad-band colours. It later developed into that of a standard `Fe ii'-class nova. Nine days past maximum, the expansion velocity estimated from the width of Hα emission component was ˜730 km s-1, and the displacement from it of the principal and diffuse-enhanced absorption systems was ˜650 and 1380 km s-1, respectively. Dust probably formed and disappeared during the period from 82 to 100 d past maximum, causing (at peak dust concentration) an extinction of ΔB= 1.8 mag and an extra ΔE(B-V) = 0.44 reddening.

Compréhension des relations entre les think tanks et les universités ...

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

L'étude sera menée par un consortium composé de la Fundación para el Avance de las Reformas y las Oportunidades (Grupo FARO), un think tank équatorien axé sur l'action, et le Centro de Políticas Comparadas de Educación (CPCE), centre de recherche de l'Universidad Diego Portales au Chili. Le consortium utilisera ...

Early X- and HE γ-ray emission from the symbiotic recurrent novae V745 Sco & RS Oph.

Science.gov (United States)

Delgado, L.; Hernanz, M.

2017-10-01

RS Oph was the first nova for which evidence of particle acceleration during its 2006 outburst was found. In recent years, several nova explosions - eight classical and two symbiotic recurrent novae - have been detected by Fermi/LAT at E>100 MeV. In most cases, this emission has been observed early after the explosion, around the optical maximum, and for a short period of time. The high-energy γ-ray emission is a consequence of π^{0} decay and/or Inverse Compton, which are related to particle (p and e^{-}) acceleration in the strong shock between the nova ejecta and the circumstellar matter. Our aim is to understand the acceleration process through the analysis of contemporaneous X-ray emission, and in particular, through the evolution of the shock wave. A deep analysis of early X-ray observations of the symbiotic recurrent novae V745 Sco (2014) by Swift/XRT, Chandra/HETG and NuStar, and RS Oph (2006) by XMM-Newton/EPIC and RGS, Swift/XRT and BAT and RXTE/PCA is presented taking into account the contemporaneous information from the IR and radio observations. This provides for the first time a global view of the early evolution of a nova remnant and its relationship with particle acceleration.

Test bench for measurements of NOvA scintillator properties at JINR

Science.gov (United States)

Velikanova, D. S.; Antoshkin, A. I.; Anfimov, N. V.; Samoylov, O. B.

2018-04-01

The NOvA experiment was built to study oscillation parameters, mass hierarchy, CP- violation phase in the lepton sector and θ23 octant, via vɛ appearance and vμ disappearance modes in both neutrino and antineutrino beams. These scientific goals require good knowledge about NOvA scintillator basic properties. The new test bench was constructed and upgraded at JINR. The main goal of this bench is to measure scintillator properties (for solid and liquid scintillators), namely α/β discrimination and Birk's coefficients for protons and other hadrons (quenching factors). This knowledge will be crucial for recovering the energy of the hadronic part of neutrino interactions with scintillator nuclei. α/β discrimination was performed on the first version of the bench for LAB-based and NOvA scintillators. It was performed again on the upgraded version of the bench with higher statistic and precision level. Preliminary result of quenching factors for protons was obtained. A technical description of both versions of the bench and current results of the measurements and analysis are presented in this work.

Thermal stress in the edge cladding of Nova glass laser disks

International Nuclear Information System (INIS)

Pitts, J.H.; Kong, M.K.; Gerhard, M.A.

1987-01-01

We calculated thermal stresses in Nova glass laser disks having light-absorbing edge cladding glass attached to the periphery with an epoxy adhesive. Our closed-form solutions indicated that, because the epoxy adhesive is only 25 μm across, it does not significantly affect the thermal stress in the disk or cladding glass. Our numerical results showed a peak tensile stress in the cladding glass of 24 MPa when the cladding glass had a uniform absorption coefficient of 7.5 cm -1 . This peak value is reduced to 19 MPa if surface parasitic oscillation heating is eliminated by tilting the disk edges. The peak tensile stresses exceed the typical 7 to 14-MPa working stress for glass; however, we have not observed any disk or cladding glass failures at peak Nova fluences of 20 J/cm 2 . We have observed delamination of the epoxy adhesive bond at fluences several times that which would occur on Nova. Replacement laser disks will incorporate cladding with a reduced absorption coefficient of 4.5 cm -1 . Recent experiments show that this reduced absorption coefficient is satisfactory

El centro histórico de Barranquilla: problemáticas ambientales y sociales

Directory of Open Access Journals (Sweden)

Myriam Graciela Bonilla Becerra

2007-01-01

Full Text Available Los procesos de rehabilitación de los centros históricos en diversas ciudades del mundo, no solo se enfocan en los aspectos arquitectónicos o de espacio público, sino que deben atender los problemas ambientales. El centro histórico es por lo general el área con mayor degradación ambiental a nivel de contaminación atmosférica, contaminación por ruido, manejo de residuos sólidos y otras formas de contaminación de la ciudad; pero en el caso de Barranquilla el sistema de caños de la ciudad ha sido afectado por las actividades propias de su centro histórico, llevándolos a un estado de degradación y contaminación que no ha sido solucionado en forma definitiva. La recuperación de los caños de Barranquilla es un asunto prioritario y es por esto que el gobierno colombiano ha aprobado la “Implementación Plan de Saneamiento de los Caños de la Cuenca Oriental de la Ciudad de Barranquilla”, cuyo costo asciende 75.554 millones de pesos. Lo que permitirá darle una nueva cara al centro histórico de la ciudad.

Experience with a high order programming language on the development of the Nova distributed control system

International Nuclear Information System (INIS)

Suski, G.J.; Holloway, F.W.; Duffy, J.M.

1983-01-01

This paper explores the impact of an HOL on the development of the distributed computer control system for Nova laser fusion facility. As the world's most powerful glass laser, Nova will generate 150 trillion watt pulses of infrared light focused onto fusion targets a few millimeters in diameter. It will perform experiments designed to explore the feasibility of fusion as an energy source of the future. Nova will utilize fifty microcomputers and four VAX-11/780's in a distributed process control computer system architecture

Oportunidades y desafios para la inserción de la energía solar en Salta

OpenAIRE

Belmonte, Silvina; Ibarra, M.; Franco, Ada Judith

2017-01-01

El trabajo sintetiza un conjunto de oportunidades y limitaciones identificadas para la inserción de energías renovables en Salta. Estos puntos claves surgen de una consulta participativa sobre experiencias realizadas o expectativas de aplicaciones tecnológicas en base a renovables realizada a informantes claves (técnicos y referentes institucionales) y un relevamiento exploratorio en las diversas regiones geográficas de Salta. Se ha detectado un conjunto de desafíos referidos a cuestiones téc...

10-year effect of Oportunidades, Mexico's conditional cash transfer programme, on child growth, cognition, language, and behaviour: a longitudinal follow-up study.

Science.gov (United States)

Fernald, Lia C H; Gertler, Paul J; Neufeld, Lynnette M

2009-12-12

Mexico's conditional cash transfer programme, Oportunidades, was started to improve the lives of poor families through interventions in health, nutrition, and education. We investigated the effect of Oportunidades on children almost 10 years after the programme began. From April, 1998, to October, 1999, low-income communities were randomly assigned to be enrolled in Oportunidades immediately (early treatment, n=320) or 18 months later (late treatment, n=186). In 2007, when 1093 children receiving early treatment and 700 late treatment in these communities were aged 8-10 years, they were assessed for outcomes including physical growth, cognitive and language development, and socioemotional development. The primary objective was to investigate outcomes associated with an additional 18 months in the programme. We used cluster-adjusted t tests and multivariate regressions to compare effects of programme participation for height-for-age, body-mass index (BMI), and cognitive language and behavioural assessment scores in early versus late treatment groups. Early enrolment reduced behavioural problems for all children in the early versus late treatment group (mean behaviour problem score -0.09 [SD 0.97] vs 0.13 [1.03]; p=0.0024), but we identified no difference between groups for mean height-for-age Z scores (-1.12 [0.96] vs -1.14 [0.97]; p=0.88), BMI-for-age Z scores (0.14 [0.99] vs 0.17 [1.06]; p=0.58), or assessment scores for language (98.8 [13.8] vs 98.4 [14.6] p=0.90) or cognition (98.8 [12.9] vs 100.2 [13.2]; p=0.26). An additional 18 months of the programme before age 3 years for children aged 8-10 years whose mothers had no education resulted in improved child growth of about 1.5 cm assessed as height-for-age [corrected] Z score (beta 0.23 [0.023-0.44] p=0.029), independently of cash received. An additional 18 months in the Oportunidades programme has independent beneficial effects other than money, especially for women with no formal education. The money itself

MASTER-ICATE constraints on the outburst time of OGLE-2012-NOVA-002

Science.gov (United States)

Levato, H.; Saffe, C.; Mallamaci, C.; Lopez, C.; Denisenko, F. Podest D.; Gorbovskoy, E.; Lipunov, V.; Balanutsa, P.; Tiurina, N.; Kornilov, V.; Belinski, A.; Shatskiy, N.; Chazov, V.; Kuznetsov, A.; Zimnukhov, D.; Krushinsky, V.; Zalozhnih, I.; Popov, A.; Bourdanov, A.; Punanova, A.; Ivanov, K.; Yazev, S.; Budnev, N.; Konstantinov, E.; Chuvalaev, O.; Poleshchuk, V.; Gress, O.; Parkhomenko, A.; Tlatov, A.; Dormidontov, D.; Senik, V.; Yurkov, V.; Sergienko, Y.; Varda, D.; Sinyakov, E.; Shumkov, V.; Shurpakov, S.; Podvorotny, P.

2012-10-01

MASTER-ICATE very wide field camera (72-mm f/1.2 lens + 11 Mpx CCD) located at Observatorio Astronomico Felix Aguilar (OAFA) near San Juan, Argentina, has observed the position of possible Nova OGLE-2012-NOVA-002 reported by L. Wyrzykowski et al. (ATel #4483) several times before 2012 May 20 and then again after 2012 July 03. MASTER-WFC is continuously imaging the areas of sky (24x16 sq. deg. field of view) with 5-sec unfiltered exposures.

O Transito e o Turismo na Cidade de caldas Novas - GO / TRAFFIC AND TOURISM IN THE CALDAS NOVAS CITY - BRAZIL

Directory of Open Access Journals (Sweden)

Norma Urban Gomes

2010-05-01

Full Text Available Resumo: Este trabalho tem como objetivo, mostrar a relação intrínseca entre o trânsito e o turismo na cidade de Caldas Novas – GO. Deste modo, para estudarmos o trânsito e seus elementos, bem como todos os fatores positivos e negativos do mesmo na cidade teremos necessariamente que falar a respeito do turismo, pois é partir dessa premissa que se molda a questão da Geografia dos Transportes em Caldas Novas,cidade esta que se destaca pelo apelo turístico de suas águas termais. A Geografia se preocupa com o inter-relacionamento ambiental e humano em um contexto espacial, e Geografia dos Transportes é o estudo dos sistemas de transportes e seus impactos espaciais. Os meios de transporte são essenciais em uma cidade turística, pois o fluxo de pessoas, bens e serviços dependem substancialmente da condição de circulação. Esse trabalho justifica-se pela necessidade de compreender e avaliar a situação do trânsito na cidade de Caldas Novas nos períodos de alta temporada, quando a cidade sofre intensa movimentação turística,causando um grande acumulo de veículos e pessoas nas vias de circulação. Isso dificulta além obviamente da circulação das pessoas como a circulação de bens e serviços essenciais para que a atividade turística se desenvolva satisfatoriamente. O estudo dos transportes é, sobretudo, multidisciplinar por natureza, e algumas vezes também interdisciplinar.

UBV photometry of dwarf novae in the brightness minimum

International Nuclear Information System (INIS)

Voloshina, I.B.; Lyutyj, V.M.

1983-01-01

Photoelectric one-night observations of the dwarf novae SS Cyg at minimum light evidence for the existence of eclipses in this system at the moments of conjuctions. The orbital inclination of the system is estimated to be i approximately 70 deg C. The components of this system are low-massive (white and red dwarf stars) and low-luminous objects. As the optical luminosity of the dwarf novae at the minimum light is dependent on the accretion disk and hot spot at its periphery, where the substance jet run out from a nondegenerated component falls, eclipses should be associated with the disk and hot spot. The white dwarf star contributes greatly to the luminosity at the minimum light, but its eclipses are possible only at i approximately 90 deg

Psicologia Positiva: uma nova abordagem para antigas questões

Directory of Open Access Journals (Sweden)

Simone dos Santos Paludo

2007-04-01

Full Text Available Historicamente, a Psicologia preocupou-se em investigar patologias, negligenciado os aspectos saudáveis dos seres humanos. Mas, a partir de 1998, assumindo a presidência da American Psychological Association, Seligman iniciou movimento denominado Psicologia Positiva, que visa oferecer nova abordagem às potencialidades e virtudes humanas, estudando as condições e processos que contribuem para a prosperidade dos indivíduos e comunidades. Este artigo apresenta e discute essa nova proposta científica, que promete melhorar a qualidade de vida dos indivíduos e prevenir patologias; também as lacunas existentes nas investigações em Ciências Humanas, as contribuições teóricas e empíricas e as possíveis aplicações desse conhecimento.

Safety and Effectiveness of NovaSure® Endometrial Ablation After Placement of Essure® Micro-Inserts.

Science.gov (United States)

Basinski, Cindy M; Price, Pamela; Burkhart, Jamie; Johnson, Jamie

2012-04-01

Objective: In-office NovaSure ® after Essure ® is a clinical paradigm for which physicians are seeking information. A PubMed search (July 2011) revealed no peer-reviewed articles describing this treatment sequence. To address the paucity of data on this topic, patients who had undergone Essure followed by NovaSure in a private practice office between July 1, 2008 and December 31, 2009 were evaluated. The objective was to evaluate safety and feasibility of in-office NovaSure after Essure, and to determine if the effectiveness of either procedure was altered by this treatment sequence. Design: This was a retrospective cohort study of 117 women (ages 24-52). Methods: Patients underwent Essure followed by NovaSure in two in-office sessions, separated by a median of 14 days. All patients had menorrhagia and desired permanent sterilization. A postprocedure patient questionnaire was administered to assess satisfaction and perceived effectiveness. Results: Among patients who underwent Essure followed by NovaSure, 83/117 (71%) returned for a 3-month hysterosalpingogram (HSG). Satisfactory placement and tubal occlusion were noted in 79/83 (95%) of these patients. Amenorrhea or spotting was observed in 72/97 (74%) of patients, 22/97 (23%) reported a satisfactory decrease in menstrual flow, and 3/97 (3%) reported ablation failure. Essure followed by NovaSure did not decrease the effectiveness of either procedure, and no adverse events were attributed to the combination of the two procedures. Patients reported high levels of satisfaction with both procedures. Conclusions: In women seeking permanent birth control and menorrhagia reduction, in-office Essure followed by NovaSure appeared to be safe, effective, and associated with high patient satisfaction. (J GYNECOL SURG 28:1).

Experience with a high order programming language on the development of the Nova distributed control system

Energy Technology Data Exchange (ETDEWEB)

Suski, G.J.; Holloway, F.W.; Duffy, J.M.

1983-05-10

This paper explores the impact of an HOL on the development of the distributed computer control system for Nova laser fusion facility. As the world's most powerful glass laser, Nova will generate 150 trillion watt pulses of infrared light focused onto fusion targets a few millimeters in diameter. It will perform experiments designed to explore the feasibility of fusion as an energy source of the future. Nova will utilize fifty microcomputers and four VAX-11/780's in a distributed process control computer system architecture.

BROTES POR NOROVIRUS EN RESIDENCIAS Y CENTROS SANITARIOS DE CATALUÑA

Directory of Open Access Journals (Sweden)

Pere Godoy

2009-01-01

Full Text Available Fundamentos. La baja dosis infectiva y las múltiples vías de transmisión facilitan la presentación de brotes de norovirus. El objetivo fue comparar la incidencia de brotes por norovirus en hospitales y residencias en Cataluña. Métodos. Se realizó un estudio descriptivo de la serie de brotes de norovirus en el período del 15/10/2004 al 30/10/2005. Se rellenó una encuesta epidemiológica para cada brote. Las variables fueron: número de expuestos, enfermos, mecanismo de transmisión, ámbito (centros sanitarios o residencias, región sanitaria, mes del año, y duración. Mediante técnicas de PCR se investigó la presencia de norovirus en muestras clínicas. Se calculó la incidencia en cada centro y la incidencia anual de brotes por centros. Las diferencias se determinaron con la prueba de c2 y la t de Student con un grado de significación (p inferior a 0,05. Resultados. Se detectaron 17 brotes, 6 en centros sanitarios y 11 en residencias. La tasa de ataque global fue del 33,4% (652/1951 y fue ligeramente superior en las residencias (35,2% que en los centros sanitarios (31,4%. El 94,1% (16/17 de los brotes se produjeron por transmisión persona a persona y sólo el 5,9% (1/17 por alimentos. La media de días entre el primer y último caso del brote fue de 11,4 (DE = 6,9. La duración media de los síntomas fue de 2,39 días (SD=1,6 y también fue superior en los pacientes hospitalizados 2,63 (SD=1,7 en comparación a los pacientes de residencias 1,97 (SD=1,7 (p < 0,0001. Conclusiones. Norovirus es responsable de un número importante de brotes por transmisión persona a persona. Se debe protocolizar su control para reducir su número y su duración.

Discovery of an Apparent Nova in M81

Science.gov (United States)

Hornoch, K.; Alfaro, M. Diaz; Ordonez-Etxeberria, I.; Vaduvescu, O.

2015-01-01

We report the discovery of an apparent nova in M81 on a co-added 1600-s narrow-band H-alpha CCD image taken with the 2.5-m Isaac Newton Telescope (INT) + WFC at La Palma under ~2.4" seeing on 2015 Jan. 15.126 UT.

Gordailu, Centro de Patrimonio Cultural Mueble de Gipuzkoa. Estudios previos

Directory of Open Access Journals (Sweden)

Maite Barrio Olano

2009-08-01

Full Text Available La Diputación Foral de Gipuzkoa ha impulsado la creación de una nueva infraestructura cultural: el Centro de Patrimonio Cultural Mueble de Gipuzkoa, denominado Gordailu (palabra en euskera cuyo significado es “depósito”. Este Centro tendrá como misión la gestión integral del patrimonio cultural mueble del territorio, partiendo de un núcleo central, el depósito in situ de colecciones de distinta titularidad. Dentro de la variedad de temas de estudio y análisis que implica un proyecto de esta envergadura, en el presente artículo se relatan los relativos al plan de necesidades, evaluación de colecciones y definición de condiciones medioambientales.

Nova target chamber decontamination study

International Nuclear Information System (INIS)

1979-05-01

An engineering study was performed to determine the most effective method for decontamination of the Nova target chamber. Manual and remote decontamination methods currently being used were surveyed. In addition, a concept that may not require in-situ decontamination was investigated. Based on the presently available information concerning material and system compatibility and particle penetration, it is recommended that a system of removable aluminum shields be considered. It is also recommended that a series of tests be performed to more precisely determine the vacuum compatibility and penetrability of other materials discussed in this report

Racial i(nter)dentification: The racialization of maternal health through the Oportunidades program and in government clinics in México.

Science.gov (United States)

Vega, Rosalynn Adeline

2017-01-01

Using an ethnographic approach, this article examines the role of racialization in health-disease-care processes specifically within the realm of maternal health. It considers the experiences of health care administrators and providers, indigenous midwives and mothers, and recipients of conditional cash transfers through the Oportunidades program in Mexico. By detailing the delivery of trainings of the Mexican Social Security Institute (IMSS) [Instituto Mexicano del Seguro Social] for indigenous midwives and Oportunidades workshops to indigenous stipend recipients, the article critiques the deployment of "interculturality" in ways that inadvertently re-inscribe inequality. The concept of racial i(nter)dentification is offered as a way of understanding processes of racialization that reinforce discrimination without explicitly referencing race. Racial i(nter)dentification is a tool for analyzing the multiple variables contributing to the immediate mental calculus that occurs during quotidian encounters of difference, which in turn structures how individuals interact during medical encounters. The article demonstrates how unequal sociohistorical and political conditions and differential access to economic resources become determinants of health.

Determining Data Quality for the NOvA Experiment

Science.gov (United States)

Murphy, Ryan; NOvA Collaboration Collaboration

2016-03-01

NOvA is a long-baseline neutrino oscillation experiment with two liquid scintillator filled tracking calorimeter detectors separated by 809 km. The detectors are located 14.6 milliradians off-axis of Fermilab's NuMI beam. The NOvA experiment is designed to measure the rate of electron-neutrino appearance out of the almost-pure muon-neutrino NuMI beam, with the data measured at the Near Detector being used to accurately determine the expected rate of the Far Detector. It is therefore very important to have automated and accurate monitoring of the data recorded by the detectors so any hardware, DAQ or beam issues arising in the 0.3 million (20k) channels of the far (near) detector which could effect this extrapolation technique are identified and the affected data removed from the physics analysis data set. This poster will cover the techniques and efficiency of selecting good data, describing the selections placed on different data and hardware levels.

Processos globais e mercado de trabalho: novas dinâmicas no setor automotivo no Brasil - anos 2000

Directory of Open Access Journals (Sweden)

Garcia, Sandro Ruduit

2007-01-01

Full Text Available O artigo tenta identificar novas dinâmicas no mercado de trabalho, face aos processos globais, a partir do que vem ocorrendo no setor automotivo brasileiro nos anos 2000, focando particularmente o caso do pólo de Gravataí (RS. O argumento central da análise é de que a constituição de processos globais promove novas dinâmicas em mercados de trabalho regionais. A abertura de mercados de produtos, as composições entre capitais nacionais e estrangeiros e os investimentos em novas plantas industriais expressam processos globais que poderiam criar novas atividades e funções produtivas, empresas e empregos, assim como estimular capacidades e conhecimentos. Por outro lado, a competitividade, instabilidade e interdependência do sistema global reforçariam a seletividade social nos mercados de trabalho regionais, constituindo novos riscos e ansiedades para segmentos econômicos e sociais vulneráveis. Isso tenderia a mobilizar instituições no esforço de tentar reparar distorções face à nova complexidade do mercado de trabalho

Swift observations of Nova Scuti 2017

Science.gov (United States)

Kuin, N. P. M.; Page, K. L.; Williams, S. C.; Darnley, M. J.; Nelson, T. J.; Osborne, J.

2017-08-01

Nova Sct 2017 (ASASSN-17hx/ASASSN-17ib) went into eruption on 2017-06-19.41 (hereafter taken as Day 0), as reported on the ASAS SN transient page (see also ATEL #10523,#10524) Spectroscopic confirmation (ATEL #10527,#10542) observed emission in H and He I, and in N II as well as Fe II. The ASASSN light curve data show a peak of V = 8.75 on 2017, July 30, day 40.867.

Leptohyphidae (Insecta, Ephemeroptera do estado do Amazonas, Brasil: novos registros, nova combinação, nova espécie e chave de identificação para estágios ninfais

Directory of Open Access Journals (Sweden)

Enide Luciana Lima Belmont

2012-09-01

Full Text Available Leptohyphidae (Insecta, Ephemeroptera do Estado do Amazonas, Brasil: novos registros, nova combinação, nova espécie e chave de identificação para estágios ninfais. Os seguintes gêneros de Leptohyphidae ocorrem no estado do Amazonas: Amanahyphes Salles & Molineri, Leptohyphes Eaton, Tricorythodes Ulmer e Tricorythopsis Traver. A distribuição das espécies de Leptohyphidae no Estado do Amazonas é apresentada. Uma espécie nova, Tricorythodes yapekuna sp. nov., é descrita e pode ser diferenciada de outros Tricorythodes pelas (1 garras tarsais com um par de dentículos submarginais e sem dentículos marginais; (2 palpo maxilar biarticulado; (3 brânquia opercular uniformemente preta com exceção da margem apical; (4 fórmula branquial 2/3/3/3/2; e (5 margem lateral do abdome expandida nos segmentos III_VI. Uma combinação nova, Tricorythopsis rondoniensis (Dias, Cruz & Ferreira, 2009 comb. nov., é proposta e constitui o primeiro registro dessa espécie para o Estado do Amazonas. Uma chave dicotômica ilustrada para identificar ninfas de gêneros e espécies ocorrentes no Amazonas também é apresentada.

Deficiencias en la oportunidad de la atención a pacientes en los servicios de urgencias

OpenAIRE

Moros-Portilla, Santiago; Jimenez-Peña, Oscar Mauricio

2017-01-01

El compromiso personal de los profesionales de salud, como factor importante, aunque poco explorado para mejorar la oportunidad en la atención en salud en los Servicios Médicos de Urgencias, puede producir deficiencias en la calidad de la atención, generando a su vez insatisfacción en los pacientes y en sus familias. Estas deficiencias son el resultado de múltiples causas sistémicas y organizacionales; sin embargo, las Instituciones Prestadoras de Salud tienen un margen de acción limitado par...

Cijepani litički materijal s prapovijesnog nalazišta Slavča, Nova Gradiška

OpenAIRE

Šošić, Rajna; Karavanić, Ivor

2005-01-01

SUMMARY TECHNOLOGICAL AND TYPOLOGICAL ANALYSIS OF THE CHIPPED STONE ARTIFACTS FROM THE PREHISTORIC SITE OF SLAV^A, NOVA GRADI[KA The site of Slav~a is situated on the south flanks of Psunj Mountain, in the town of Nova Gradi{ ka, Western Slavonia. The site has been continuosly excavated since 1997 by the City Museum of Nova Gradi{ka. A total number of 1655 chipped stone artifacts have been analyised, classified to the Sopot, Kostolac and Lasinja cultures, in effect a peri...

Nova pulse power system description and status

International Nuclear Information System (INIS)

Holloway, R.W.; Whitham, K.; Merritt, B.T.; Gritton, D.G.; Oicles, J.A.

1981-01-01

The Nova laser system is designed to produce critical data in the nation's inertial confinement fusion effort. It is the world's largest peak power laser and presents various unique pulse power problems. In this paper, pulse power systems for this laser are described, the evolutionary points from prior systems are pointed out, and the current status of the hardware is given

Novas ocorrências e registros notáveis sobre distribuição de aves em Santa Catarina, sul do Brasil

Directory of Open Access Journals (Sweden)

Iury Almeida Accordi

2008-01-01

Full Text Available http://dx.doi.org/10.5007/2175-7925.2008v21n1p85 A maior parte dos trabalhos ornitológicos realizados em Santa Catarina se concentra na metade leste do estado, enquanto no centro-oeste praticamente inexistem informações publicadas. Entre março 2000 e maio 2002 foi realizado um inventário da avifauna nas áreas de influência das usinas hidrelétricas de Machadinho e de Barra Grande, ao longo da margem catarinense dos rios Uruguai e Pelotas. Realizaram-se amostragens adlibitum, contagens em pontos de escuta e capturas com redes de neblina. O presente trabalho registrou setenta e dois registros notáveis para o território catarinense, sendo duas novas ocorrências (Cypseloides senex e Procacicus solitarius, três que se baseavam apenas em informações bibliográficas de cunho geral (Amazona pretrei, Ramphastos toco e Capsiempis flaveola, quatro que foram registradas pela primeira vez nos últimos 40 anos (Megascops sanctaecatarinae, Macropsalis forcipata, Phyllomyias virescens e Corytops delalandi e outras sessenta e três espécies citadas pela primeira vez para o vale do rio Uruguai em sua porção leste.

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

Directory of Open Access Journals (Sweden)

Marta Tura-Solvas

2009-04-01

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

THE RED NOVA-LIKE VARIABLE IN M31-A BLUE CANDIDATE IN QUIESCENCE

International Nuclear Information System (INIS)

Shara, Michael M.; Zurek, David; Prialnik, Dina; Yaron, Ofer; Kovetz, Attay

2010-01-01

M31-RV was an extraordinarily luminous (∼10 6 L sun ) eruptive variable, displaying very cool temperatures (roughly 1000 K) as it faded. While this object's peak luminosity matched or exceeded those of the brightest known classical novae, its red colors and cool spectra were very different from those of classical novae. The photometric behavior of M31-RV (and several other very red novae, i.e., luminous eruptive red variables) has led to several models of this apparently new class of astrophysical object. We list these models, which predict very red eruptions and very red remnants decades after the eruptions. One of the most detailed models is that of 'mergebursts'. Mergebursts are (hypothetical) mergers of close binary stars, predicted to rival or exceed the brightest classical novae in luminosity, but to be much cooler and redder than classical novae, and to become slowly hotter and bluer as they age. This prediction suggests two stringent and definitive tests of the mergeburst hypothesis. First, there should always be a cool red remnant, and NOT a hot blue remnant at the site of such an outburst. Second, the inflated envelope of a mergeburst event should be slowly contracting; hence, it must display a slowly rising effective temperature. We have searched the location of M31-RV in multiple observatory archives. Our search revealed a luminous, UV-bright object within 0.''4 (1.5σ of the astrometric position) of M31-RV in archival WFPC2 images taken 10 years after the outburst. Recent Hubble imagery, 20 years after the outburst, determines that this object is still hot and fading; it remains much too hot to be a mergeburst. Furthermore, the effective temperature of this object is declining, contrary to the prediction for mergebursts. If we have correctly identified M31-RV's remnant, it cannot be a mergeburst-but its behavior is consistent with theoretical nova models which erupt on a low-mass white dwarf. Future Hubble UV and visible images could determine if the

Early Photometric and Spectral Evolution of Nova Cygni 2014 (V2659 Cyg

Directory of Open Access Journals (Sweden)

Burlak M. A.

2015-12-01

Full Text Available We present optical spectroscopic and UBV (RIC photometric observations of Nova Cygni 2014 (V2659 Cyg from its rebrightening to the nebular stage. After the first maximum, the nova underwent several irregular flare-like rebrightenings, with amplitudes up to two magnitudes, accompanied with spectral changes. During the bright state, forbidden lines became weaker; the absorption components of Balmer, He I, Fe II, N I, N II, O I lines strengthened, indicating an increase in the density and mass-loss rate in the form of a wind.

Centro Direzionale of Naples. A “Smart” Concept

Directory of Open Access Journals (Sweden)

Fabrizio Canfora

2014-11-01

Full Text Available The topic of urban planning linked to the growth of smart cities is now quite common also in the urban-sociological debate. Recent studies (Besselaar, Koizumi, 2005; Fistola, 2010 identify the main focus of the smart city no longer exclusively in the strategic role played by ICT infrastructures, but above all in the factors enabling urban growth, defined as the ability to stimulate innovative urban developments, along with an increasing attention to the environment, eco-design, improved living levels, as well as the "bio-socio-environmental capital" (Corbisiero, 2013. Based on this theoretical background, the paper highlights the results of a research conducted in Naples on the empirical case of the "Centro Direzionale". It is an intervention of urban design of considerable impact on the city. The design and construction of the Centro Direzionale of Naples is, in fact, an archetype of the smart city; a primal testing of "urban intelligence" in terms of transport systems, infrastructure, logistics, systems for energy efficiency and technology. More generally, a good practice of city administration and of exploitation of strategic spatial planning.

Centro municipal de vehículos Ginebra-Suiza

Directory of Open Access Journals (Sweden)

Dom, Jean Pierre

1969-06-01

Full Text Available This station comprises three buildings, which house, respectively, the offices and auxiliary services of the station, the vehicles depot, and the mechanical repair works, stores and inspection of vehicles. The whole project has been designed in accordance with a module of 5.875 m length. The external elevations of this significant project express clearly its robust, sober and industrially functional nature.El conjunto erigido comprende tres edificios destinados, respectivamente, a albergar: «las dependencias de la administración», y «locales de servicio del Centro»; «el depósito de vehículos»; y «la inspección de vehículos», «repuestos» y «talleres mecánicos». Todos ellos modulados según un módulo de 5,875 m de lado. Desde el punto de vista de composición arquitectónica, este Centro refleja claramente, en los alzados exteriores, su carácter de construcción industrial sobria y robusta.

Estrategias gerenciales administrativas para Centros Médicos Privados

Directory of Open Access Journals (Sweden)

Thaide Torres Guerra

2013-01-01

Full Text Available El problema abordado en este artículo plantea la necesidad de nuevas estrategias gerenciales administrativas para los Centros Médicos Privados de la Parroquia Raúl Leoni del Municipio Maracaibo, con el fin de identificar las fallas, para la mejora del desempeño gerencial. La metodología corresponde a un estudio descriptivo, pues contextualiza el desempeño gerencial administrativo actual en cuanto a las funciones en los centros seleccionados, identificando métodos y test que sirvan para su medición en aspectos relevantes de la planificación, organización, dirección y control. Finalmente se concluye que la estructura organizacional y la caracterización del enfoque confirma con los resultados que el liderazgo, la motivación, comunicación y toma de decisiones, son medianamente efectivas, siendo una debilidad para alcanzar la integración y unificación de los equipos de trabajo y de todos sus miembros que hacen vida en la institución.

Surgimiento, evolución y principales resultados del Centro Nacional Coordinador de Ensayos Clínicos

Directory of Open Access Journals (Sweden)

María Amparo Pascual López

2011-03-01

Full Text Available En la década de los 90, el desarrollo acelerado de la Industria Médico Farmacéutica cubana impuso la necesidad de crear estructuras que garantizaran la evaluación clínica de productos para su introducción a la práctica médica y posterior comercialización. Uno de los centros fundados para contribuir con estos fines fue el Centro Nacional Coordinador de Ensayos Clínicos. El presente trabajo recoge en síntesis las razones que motivaron la creación del centro y muestra, brevemente, su desarrollo organizacional por más de 17 años. Describe, además, los principales componentes del sistema de diseño y conducción de ensayos clínicos; así como los aportes más significativos de cada uno de ellos para el cumplimiento de sus objetivos como centro.

VLBI detection of the internal shocks in nova V959 Mon

Science.gov (United States)

Yang, J.; Paragi, Z.; O'Brien, T.; Chomiuk, L.; Linford, J. D.

V959 Mon is a classical nova detected at GeV gamma-ray wavelengths on 2012 June 19. While classical novae are now routinely detected in gamma-rays, the origin of the shocks that produce relativistic particles has remained unknown. We carried out electronic European VLBI Network (e-EVN) observations that revealed a pair of compact synchrotron emission features in V959 Mon on 2012 Sep 18. Since synchrotron emission requires strong shocks as well, we identify these features as the location where the gamma rays were produced. We also detected the extended ejecta in the follow-up EVN observations. They expanded much faster in East-West direction than the compact knots detected in the aforementioned e-EVN measurements. By comparing the VLBI results with lower resolution images obtained using e-MERLIN and the VLA - as reported by Chomiuk et al. (2014) - it appears that 1) influenced by the binary orbit, the nova ejecta was highly asymmetric with a dense and slow outflow in the equatorial plane and low-density and faster ejecta along the poles; and 2) the VLBI knots were related to shocks formed in the interaction region of these outflows.

Demuestran el potencial probiótico de las bacterias lácticas presentes en el vino

OpenAIRE

García-Ruiz, Almudena; González de Llano, Dolores; Esteban-Fernández, Adelaida; Requena, Teresa; Bartolomé, Begoña; Moreno-Arribas, M. Victoria

2014-01-01

Científicos del Instituto de Investigación en Ciencias de la Alimentación (CIAL), centro mixto UAM-CSIC, han logrado caracterizar 11 bacterias de origen enológico con potenciales propiedades probióticas. El trabajo abre nuevas oportunidades para seleccionar microorganismos con la capacidad de mejorar la fermentación en el proceso de vinificación, y ofrecer además beneficios nutricionales.

La inserción al Asia-Pacífico, oportunidades y desafíos para el Valle del Cauca y la región pacífica colombiana

OpenAIRE

Ricardo Coutin

2014-01-01

Resumen: El objetivo general del texto es brindar una aproximación a los retos y las oportunidades que representa, para el Valle del Cauca y la Región Pacífica colombiana, la inserción al Asia-Pacífico. Para lo cual se plantean tres objetivos específicos: primero, analizar someramente el contexto económico comercial del Asia-Pacífico y América Latina, con especial énfasis en Colombia y los demás países de la Alianza del Pacífico (AP); segundo, estudiar las oportunidades y los retos para el Va...

La inserción al Asia-Pacífico, oportunidades y desafíos para el Valle del Cauca y la región pacífica colombiana

OpenAIRE

Countin, Ricardo

2014-01-01

El objetivo general del texto es brindar una aproximación a los retos y las oportunidades que representa, para el Valle del Cauca y la Región Pacífica colombiana, la inserción al Asia-Pacífico. Para lo cual se plantean tres objetivos específicos: primero, analizar someramente el contexto económico comercial del Asia-Pacífico y América Latina, con especial énfasis en Colombia y los demás países de la Alianza del Pacífico (AP); segundo, estudiar las oportunidades y los retos para el Valle del C...

El coste de oportunidad como determinante del autoempleo en la Unión Europea (UE 25)

OpenAIRE

Luis Miguel Zapico Aldeano; Mariano Nieto Antolín; María Felisa Muñoz Doyague

2008-01-01

Este trabajo pretende introducir en el análisis de la motivación de la actividad emprendedora el potencial efecto negativo del coste de oportunidad asociado a la misma. Para lograr este objetivo se aplicó un análisis de ecuaciones estructurales con la aproximación Partial Least Squares (PLS) sobre una muestra de ciudadanos de la Unión Europea agrupados por países, para el periodo 2004. Los resultados muestran que la motivación emprendedora presenta una estructura interna dual formada por dos ...

Estrategias de desarrollo para la empresa Cal del Centro S.A.C.

OpenAIRE

Bautista Antón, Yovanni Patricia; Mendoza Rojas, Miguel Ángel

2015-01-01

Cal del Centro S.A.C. es una sociedad anónima cerrada cuyo negocio gira en torno a la actividad económica de la fabricación de cemento, cal y yeso. El objetivo del presente trabajo es evaluar la posibilidad de éxito de un proyecto de inversión en una planta de cal, a través de Cal del Centro S.A.C. –como empresa autosuficiente–, para asegurar el cien por ciento del suministro de óxido de calcio en cantidad y calidad para el procesamiento de concentrados de cobre y el tratamiento de aguas indu...

Modelo de gestión integral para centros comerciales pequeños

OpenAIRE

Molina Saquicela, Mónica Andrea

2013-01-01

Desarrollar un modelo de gestión integral diseñado a la medida de las necesidades de los centros comerciales pequeños, tomando como base para su implementación al Centro Comercial Plaza de las Américas, servirá como una herramienta clave que ayudará a su equipo gerencial, a través de un manejo planificado y el aprovechamiento de sus diferenciadores, lograr un crecimiento a lo largo del tiempo, así como un mejor posicionamiento en la mente del consumidor y una mayor participación en el mercado...

Hacia una educación con igualdad de oportunidades para personas con discapacidad

Directory of Open Access Journals (Sweden)

Rocio Molina Béjar

2006-04-01

Full Text Available El propósito de este texto es presentar las diferentes experiencias de países y universidades que han implementado programas de apoyo al estudiante con discapacidad. Se subraya la importancia de los marcos legales que, desde el principio de igualdad de oportunidades, se han decretados para esta población y se sustenta que su aplicabilidad es clave para la inclusión académica de este grupo de estudiantes. Para Colombia es de suma importancia capitalizar los esfuerzos de la comunidad mundial en el cumplimiento de las políticas en educación superior. Se reconoce que éste es un proceso lento pero plausible e implica materializar y divulgar los resultados del proceso de inclusión educativa.

Evaluation of petroleum products pricing regulation in Nova Scotia : a 2 year review

International Nuclear Information System (INIS)

2008-11-01

Gasoline price regulation was introduced in Nova Scotia on July 1st, 2006. This report presented the findings and recommendations of a review of the first two years of the gasoline price regulation in Nova Scotia. The regulations had three main objectives. This review examined whether, and to what extent, they were achieved. The objectives were to stabilize price, maintain industry infrastructure, and minimize cost to consumers. The report described the rationale for the regulation, study objectives, and approach taken to gasoline regulation in Nova Scotia, including the objectives and technical aspects of how regulation works. The gasoline market in Nova Scotia was examined, including the market structure and competitive behaviour in an unregulated market. The report also provided some theoretical perspectives on how regulation was likely to affect industry structure and competitive behaviour. The extent to which the regulation was meeting its objectives was then assessed and perspectives on the regulation from consumers, retailers and wholesalers were offered. Last, the report provided a review of the findings in terms of the key elements of regulatory design and set out recommendations for improving the system. It was recommended that in order to improve certainty, particularly given the regulated price differences amongst grades, the regulations should be amended to include grade specifications referencing octane ratings. tabs., figs

LIDERAZGO VISIONARIO: CENTRO DEL CONOCIMIENTO

Directory of Open Access Journals (Sweden)

Rafael Pérez Uribe

2013-07-01

Full Text Available El gestor del conocimiento es el ser humano. En el mundo como en las empresas es el centro de la destrucción y la creación del conocimiento. Por esta razón en las empresas se deben generar los escenarios adecuados para revertir el conocimiento de las personas y convertirlo en patrimonio de las organizaciones. El papel del líder es vital para la construcción de escenarios adecuados para que los trabajadores se conviertan en auténticos gestores del «knowledge» y esto permita que las organizaciones sean entes permanentes de aprendizaje continuo.

Experimental studies of interaction mechanisms and phase transport processes in two-phase flow (NOVA program); Experimentelle Untersuchung von Wechselwirkungsmechanismen und Phasentransportprozessen in Zweiphasenstroemungen (NOVA-Vorhaben)

Energy Technology Data Exchange (ETDEWEB)

Sauter, H.; Meyder, R.; Philipp, P.; Samstag, M.

1995-08-01

The NOVA program was continued with turbulent, vertical, upward two-phase flow experiments. The development of a local gas distribution along the test section was visualized by X-ray tomography. (orig.)

La calidad de vida de los sujetos usuarios de un centro social de personas mayores

Directory of Open Access Journals (Sweden)

César Bugallo Carrera

2014-09-01

Full Text Available En esta investigación hemos intentado comprobar si la asistencia a los centros sociales de personas mayores es un medio eficaz para la mejora de la calidad de vida de las personas mayores, es decir, si los usuarios de dichos centros tienen una mejor calidad de vida que aquellos que no acuden a ellos. Para ello, hemos contado con un grupo experimental y un grupo control. A continuación ambos grupos han pasado dos pruebas: una que valora la calidad de vida y otra, el deterioro cognitivo. Una vez pasadas las pruebas y obtenidas las puntuaciones, hemos concluido que los usuarios del centro social tienen una mayor calidad de vida que los sujetos que no acuden a él.

Missed opportunities in early diagnosis of symptomatic colorectal cancer Oportunidades perdidas en el diagnóstico temprano del cáncer colorrectal sintomático

Directory of Open Access Journals (Sweden)

Maite Domínguez-Ayala

2012-07-01

Full Text Available Objective: delays in diagnosis of symptomatic colorectal cancer are a reality in our context. This study aims at identifying missed diagnostic opportunities, describing events, clinical clues and most common mistakes, and quantifying delays. Material and methods: an observational descriptive study was performed in order to review all case histories. Two experts reviewed the case histories of all the patients from the 4th Catchment Area of Asturias diagnosed with colorectal cancer in 2009. All data were analysed using bivariate and multivariate logistic regression. Results: full information on 119 patients out of 143 patients was collected. 34.45% had a clinical missed opportunity -confidence interval (CI 95%: 30.92-39.68-. Outcomes show an average of 2.41 missed opportunities and 2.61 diagnostic clinical clues per patient. The number of patients with missed opportunities was significantly higher. The total amount of co-morbidities was higher in patients with missed opportunities (2.7. This was the main determinant. The main diagnostic key was iron-deficiency anaemia (46.3%. It produced the longest delay (300 days. Not having requested diagnostic tests was the most common mistake (43.3%. Having at least one missed opportunity entailed an average delay of 235.8 days between the first visit to the office and the referral to a consultant. Conclusions: in clinical practice, missed opportunities to start a diagnostic assessment in patients with presumptive diagnosis of colorectal cancer are common. The most significant clinical clue and the one generating the longest delay is iron-deficiency anaemia. The diagnostic delay is important and is caused mainly by not identifying symptoms.Objetivo: los retrasos en el diagnóstico de cáncer colorrectal sintomático son una realidad en nuestro medio. Nos proponemos identificar los casos en los que hubo oportunidad perdida para el diagnóstico, describir las características de los episodios, las claves cl

Centralized computer-based controls of the Nova Laser Facility

International Nuclear Information System (INIS)

Krammen, J.

1985-01-01

This article introduces the overall architecture of the computer-based Nova Laser Control System and describes its basic components. Use of standard hardware and software components ensures that the system, while specialized and distributed throughout the facility, is adaptable. 9 references, 6 figures

HOSPITALIDADE URBANA DO CENTRO HISTÓRICO DE PELOTAS/RS

Directory of Open Access Journals (Sweden)

Camila Osório Dutra

2017-11-01

Full Text Available O presente trabalho tem como objeto de estudo a Hospitalidade Urbana do Centro Histórico da cidade de Pelotas/RS. Tendo como objetivo compreender se o Centro Histórico desta cidade, é, ou não, hospitaleiro, através das categorias de análise: Acessibilidade, Identidade e Legibilidade. Para isto, foram realizadas pesquisas bibliográficas e questionários com moradores e turistas em diferentes pontos da cidade. Relatou-se que a hospitalidade de legibilidade se refere, cada indivíduo cada usuário de um espaço tem uma visão, uma percepção, do que é mais interessante, do que é guardado em suas experiências e consequentemente em suas memórias visuais. Além disso, em futuros estudos, outros pontos que podem ser abordados são as condições de acesso em diferentes municípios e as identidades de diferentes cidades.

La vigilancia y la inteligencia competitiva, una oportunidad para las unidades de información de las Cámaras de Comercio

Directory of Open Access Journals (Sweden)

Martínez González, José Antonio

2012-06-01

Full Text Available La promulgación del Decreto-ley 13/2010 y su posterior ratificación por la Ley 2/2011, de 4 de marzo, de Economía Sostenible han supuesto para las Cámaras de Comercio un forzado cambio de modelo de negocio que a su vez, puede ser una gran oportunidad para iniciar nuevas líneas de acción. Las unidades de información pueden jugar un papel relevante como un activo estratégico, al igual que lo fueron en su momento en los Institutos Tecnológicos con la vigilancia tecnológica.En este caso se trataría de la creación de un sistema de vigilancia competitiva dirigido a proporcionar información de valor, esto es, económicamente útil, a las pymes. Esto,unido a acciones de apoyo al desarrollo de la inteligencia competitiva, como una herramienta estratégica en sus procesos de innovación, supondría una excelente oportunidad proporcionada por la coyuntura actual.

PSICOLOGÍA 2.0: OPORTUNIDADES Y RETOS PARA EL PROFESIONAL DE LA PSICOLOGÍA EN EL ÁMBITO DE LA ESALUD

Directory of Open Access Journals (Sweden)

Manuel Armayones,

2015-05-01

Full Text Available La eSalud está reconocida a nivel nacional, europeo e internacional como una prioridad estratégica para el sistema sanitario. La Psicología, como profesión sanitaria, tiene la oportunidad y la obligación de profundizar su actividad en un ámbito donde hasta ahora no había tenido una gran presencia. Los principios básicos de la Web 2.0 integrados a la práctica profesional de la Psicología exigen, más allá del uso de la tecnología, una nueva actitud y compromiso hacia la colaboración, adoptar una perspectiva transversal de la tecnología en todos los ámbitos de la actividad de los psicólogos, y la consideración de la capacidad de automanejo de las personas respecto a su salud. Es la Psicología 2.0, que plantea interesantes oportunidades laborales y retos a los que la disciplina y los colegios profesionales deberán dar respuesta para asegurar la calidad del servicio de las personas.

A wave model for dwarf novae

International Nuclear Information System (INIS)

Sparks, W.M.; Kutter, G.S.

1980-01-01

The rapid coherent oscillation during a dwarf nova outburst is attributed to an accretion-driven wave going around the white dwarf component of the binary system. The increase and decrease in the period of this oscillation is due to the change in the velocity of the wave as it is first being driven and then damped. Qualitatively, a large number of observations can be explained with such a model. The beginnings of a mathematical representation of this model are developed. (orig.)

Review of the classical nova outburst

International Nuclear Information System (INIS)

Starrfield, S.; Sparks, W.M.

1986-06-01

Observational studies have not only identified a new class of novae but theoretical simulations of this class have been found to be in excellent agreement with the observations. This new class consists of outbursts occurring on ONeMg white dwarfs in close binar systems in contrast to the other outbursts which are occurring on CO white dwarfs. We also review the effects of the β + -unstable nuclei and show how their presence has a major effect on the evolution. 77 refs

THE {sup 7}Be ii RESONANCE LINES IN TWO CLASSICAL NOVAE V5668 SGR AND V2944 OPH

Energy Technology Data Exchange (ETDEWEB)

Tajitsu, Akito [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo, HI 96720 (United States); Sadakane, Kozo [Astronomical Institute, Osaka Kyoiku University, Asahigaoka, Kashiwara, Osaka 582-8582 (Japan); Naito, Hiroyuki [Nayoro Observatory, 157-1 Nisshin, Nayoro, Hokkaido 096-0066 (Japan); Arai, Akira; Kawakita, Hideyo [Koyama Astronomical Observatory, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8555 (Japan); Aoki, Wako, E-mail: tajitsu@naoj.org [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)

2016-02-20

We report spectroscopic observations of the resonance lines of singly ionized {sup 7}Be in the blueshifted absorption line systems found in the post-outburst spectra of two classical novae—V5668 Sgr (Nova Sagittarii 2015 No. 2) and V2944 Oph (Nova Ophiuchi 2015). The unstable isotope {sup 7}Be should have been created during the thermonuclear runaway (TNR) of these novae and decayed to form {sup 7}Li within a short period (a half-life of 53.22 days). These confirmations of {sup 7}Be are the second and the third ones following the first case found in V339 Del by Tajitsu et al. The blueshifted absorption line systems in both novae are clearly divided into two velocity components, both of which contain {sup 7}Be. This means that the absorbing gases in both velocity components consist of products of TNR. We estimated the amounts of {sup 7}Be produced during the outbursts of both novae and concluded that significant {sup 7}Li should have been created. These findings strongly suggest that the explosive production of {sup 7}Li via the reaction {sup 3}He(α,γ){sup 7}Be and its  subsequent decay to {sup 7}Li occurs frequently among classical novae and contributes to the process of Galactic Li enrichment.

Centro escolar federal en Bludenz/Austria

Directory of Open Access Journals (Sweden)

Nehrer, Manfred

1981-06-01

Full Text Available Este centro escolar, considerado como uno de los más interesantes de Austria, se compone de cuatro cuerpos en los que se distribuyen, respectivamente, las escuelas, el gimnasio, la vivienda del conserje y el local de transformadores. En su construcción hay que destacar su adecuada flexibilidad, que permite dar cabida a las distintas funciones que en él se desarrollan, y la correcta adaptación del gran volumen edificado a las especiales características urbanas y arquitectónicas del ámbito circundante.

NOvA Event Building, Buffering and Data-Driven Triggering From Within the DAQ System

International Nuclear Information System (INIS)

Fischler, M; Rechenmacher, R; Green, C; Kowalkowski, J; Norman, A; Paterno, M

2012-01-01

The NOvA experiment is a long baseline neutrino experiment design to make precision probes of the structure of neutrino mixing. The experiment features a unique deadtimeless data acquisition system that is capable acquiring and building an event data stream from the continuous readout of the more than 360,000 far detector channels. In order to achieve its physics goals the experiment must be able to buffer, correlate and extract the data in this stream with the beam-spills that occur that Fermilab. In addition the NOvA experiment seeks to enhance its data collection efficiencies for rare class of event topologies that are valuable for calibration through the use of data driven triggering. The NOvA-DDT is a prototype Data-Driven Triggering system. NOvA-DDT has been developed using the Fermilab artdaq generic DAQ/Event-building toolkit. This toolkit provides the advantages of sharing online software infrastructure with other Intensity Frontier experiments, and of being able to use any offline analysis module-unchanged-as a component of the online triggering decisions. We have measured the performance and overhead of NOvA-DDT framework using a Hough transform based trigger decision module developed for the NOvA detector to identify cosmic rays. The results of these tests which were run on the NOvA prototype near detector, yielded a mean processing time of 98 ms per event, while consuming only 1/16th of the available processing capacity. These results provide a proof of concept that a NOvA-DDT based processing system is a viable strategy for data acquisition and triggering for the NOvA far detector.

Creating Cohesive Community Through Shared Reading: A Case Study of One Book Nova Scotia

Directory of Open Access Journals (Sweden)

Alyssa Harder

2015-06-01

Full Text Available One Book Nova Scotia is described on the program’s website as “a province-wide community reading event for adults.” Formally programmed events have included the book announcement and launch, a series of author readings, and book discussions, both face to face and through Twitter. This paper analyzes the success of the One Book Nova Scotia program in achieving its goals of developing a reading culture and community in the province of Nova Scotia based on the findings of a participant survey, distributed in both 2012 and 2013, and an analysis of the 2013 Twitter discussion. This analysis reveals that participants tended to be well-educated females, aged 50-59, and often employed in libraries, bookselling or publishing, or news media. The goal of developing or participating in a reading community was a compelling motivator for many respondents. Although many respondents indicated their desire to be part of a reading community, Twitter was not proven to be an effective forum for fostering conversation or debate related to One Book Nova Scotia. Building on the analysis, the paper concludes with some recommendations to improve the effectiveness of future programs. These recommendations include the selection of a book with strong regional connections, an expansion of publicity methods, an increase in lead time between the announcement of the book title and the start of programming, and a more strategic use of Twitter as a discussion forum. Although these recommendations arise from the specific analysis of the One Book Nova Scotia reading program, they are general enough to apply to other One Book, One Community programs.

Demonstration of efficient full-aperture type I/type II third harmonic conversion on Nova

International Nuclear Information System (INIS)

Wegner, P.J.; Henesian, M.A.; Marchi, F.T.; Speck, D.R.

1988-01-01

The ten arms of the Nova laser system readily deliver 22.5 kJ of third harmonic radiation in 1-ns pulses to targets for fusion experiments. Frequency conversion experiments conducted on a single arm have produced >7.5 kJ of 3ω radiation in longer (2.5-ns) pulses at the output of a Nova crystal array with 15 kJ of 1ω drive. Equivalent on-target energies (40-60 kJ) in 2-3-ns pulses is available at target chamber center when the laser disks in the output section of the Nova amplifier are replaced with new high-damage threshold glass. The remaining issue facing frequency conversion on Nova is to demonstrate similar 3-ω energy (>40 kJ) on-target at shorter (1-ns) pulse lengths with controlled pulse shape at 1→ drive energies up to 9 kJ. Frequency conversion to 40 kJ of 3→ with precisely shaped pulses is required for future experiments. The authors assembled a full-aperture (74-cm) array of these crystals to test on an arm outfitted with the new laser glass. Measurements of conversion efficiency, pulse time history, and optical quality of the converted beam are reported

Pan-chromatic observations of the remarkable nova Large Magellanic Cloud 2012

Energy Technology Data Exchange (ETDEWEB)

Schwarz, Greg J. [American Astronomical Society, 2000 Florida Ave., Nw, Suite 300, DC 20009-1231 (United States); Shore, Steven N. [Dipartimento di Fisica “Enrico Fermi,” Universita di Pisa, and INFN-Sezione Pisa, Largo B. Pontecorvo 3, I-56127, Pisa (Italy); Page, Kim L.; Osborne, Julian P.; Beardmore, Andrew P. [X-Ray and Observational Astronomy Group, Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH (United Kingdom); Walter, Frederick M. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794-3800 (United States); Bode, Michael F. [Astrophysics Research Institute, IC2 Liverpool Science Park, 146 Brownlow Hill, L3 5RF (United Kingdom); Drake, Jeremy J. [Smithsonian Astrophysical Observatory, MS-3, 60 Garden Street, Cambridge, MA 02138 (United States); Ness, Jan-Uwe [European Space Astronomy Centre, P.O. Box 78, E-28691 Villanueva de la Canada, Madrid (Spain); Starrfield, Sumner [School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287 (United States); Rossum, Daniel R. Van [Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60637 (United States); Woodward, Charles E., E-mail: Greg.Schwarz@aas.org [Minnesota Institute for Astrophysics, University of Minnesota, 116 Church S., SE, Minneapolis, MN 55455 (United States)

2015-03-01

We present the results of an intensive multiwavelength campaign on nova LMC 2012. This nova evolved very rapidly in all observed wavelengths. The time to fall two magnitudes in the V band was only 2 days. In X-rays the super soft phase began 13 ± 5 days after discovery and ended around day 50 after discovery. During the super soft phase, the Swift/XRT and Chandra spectra were consistent with the underlying white dwarf (WD) being very hot, ∼1 MK, and luminous, ∼10{sup 38} erg s{sup −1}. The UV, optical, and near-IR photometry showed a periodic variation after the initial and rapid fading had ended. Timing analysis revealed a consistent 19.24 ± 0.03 hr period in all UV, optical, and near-IR bands with amplitudes of ∼0.3 mag which we associate with the orbital period of the central binary. No periods were detected in the corresponding X-ray data sets. A moderately high inclination system, i = 60 ± 10{sup ∘}, was inferred from the early optical emission lines. The HST/STIS UV spectra were highly unusual with only the N v (1240 Å) line present and superposed on a blue continuum. The lack of emission lines and the observed UV and optical continua from four epochs can be fit with a low mass ejection event, ∼10{sup −6} M{sub ⊙}, from a hot and massive WD near the Chandrasekhar limit. The WD, in turn, significantly illuminated its subgiant companion which provided the bulk of the observed UV/optical continuum emission at the later dates. The inferred extreme WD characteristics and low mass ejection event favor nova LMC 2012 being a recurrent nova of the U Sco subclass.

Pan-chromatic observations of the remarkable nova Large Magellanic Cloud 2012

International Nuclear Information System (INIS)

Schwarz, Greg J.; Shore, Steven N.; Page, Kim L.; Osborne, Julian P.; Beardmore, Andrew P.; Walter, Frederick M.; Bode, Michael F.; Drake, Jeremy J.; Ness, Jan-Uwe; Starrfield, Sumner; Rossum, Daniel R. Van; Woodward, Charles E.

2015-01-01

We present the results of an intensive multiwavelength campaign on nova LMC 2012. This nova evolved very rapidly in all observed wavelengths. The time to fall two magnitudes in the V band was only 2 days. In X-rays the super soft phase began 13 ± 5 days after discovery and ended around day 50 after discovery. During the super soft phase, the Swift/XRT and Chandra spectra were consistent with the underlying white dwarf (WD) being very hot, ∼1 MK, and luminous, ∼10 38 erg s −1 . The UV, optical, and near-IR photometry showed a periodic variation after the initial and rapid fading had ended. Timing analysis revealed a consistent 19.24 ± 0.03 hr period in all UV, optical, and near-IR bands with amplitudes of ∼0.3 mag which we associate with the orbital period of the central binary. No periods were detected in the corresponding X-ray data sets. A moderately high inclination system, i = 60 ± 10 ∘ , was inferred from the early optical emission lines. The HST/STIS UV spectra were highly unusual with only the N v (1240 Å) line present and superposed on a blue continuum. The lack of emission lines and the observed UV and optical continua from four epochs can be fit with a low mass ejection event, ∼10 −6 M ⊙ , from a hot and massive WD near the Chandrasekhar limit. The WD, in turn, significantly illuminated its subgiant companion which provided the bulk of the observed UV/optical continuum emission at the later dates. The inferred extreme WD characteristics and low mass ejection event favor nova LMC 2012 being a recurrent nova of the U Sco subclass.

Que Modelo de Militar para a Nova Arte de Guerra e Paz?

OpenAIRE

Vieira, Guilherme Belchior

2001-01-01

A pós-modernidade militar, surgida com o final da Guerra Fria, tem decorrido num ambiente internacional caracterizado pelo declínio das guerras entre estados e o deflagrar de guerras prolongadas no interior dos estados (as “novas guerras”), nomeadamente na África subsariana e no coração da Europa, provocadas por diferenças étnicas, tribais, religiosas ou políticas e deixando na sua esteira populações em situações de extrema carência. As operações de apoio à paz (as “novas missões”) p...

Variational problems for plane curves in centro-affine geometry

International Nuclear Information System (INIS)

Musso, Emilio

2010-01-01

In this paper closed extremals of variational problems defined by quadratic polynomials in the centro-affine curvature are considered. The closure of the trajectories is discussed and the existence of countably many closed critical curves is proven. The geometrical properties of closed trajectories are analyzed by numerical methods.

The accreting white dwarfs in VY Scl nova-like variables

International Nuclear Information System (INIS)

Sion, Edward M; Mizusawa, Trisha; Ballouz, Ronald-Louis

2009-01-01

Accurate distances for nova-like variables offer the possibility of extracting information on nova-like accretion rates during high states of optical brightness and on their underlying accretion-heated white dwarfs during intermediate and low brightness states. The modeling technique which is employed is discussed and a representative example, the novalike variable KR Aur, is presented. Although KR Aur was in a fainter high state when its far ultraviolet spectrum was obtained, roughly one-half of its FUV radiation is due to the light of an accretion disk and the other half is contributed by a hot white dwarf with T eff = 29, 000±2, 000K. However, this best-fit solution corresponds to a distance of 180 pc which was an early distance estimate due to Patterson (1984).

Characterization of X-ray streak cameras for use on Nova

International Nuclear Information System (INIS)

Kalantar, D.H.; Bell, P.M.; Costa, R.L.; Hammel, B.A.; Landen, O.L.; Orzechowski, T.J.; Hares, J.D.; Dymoke-Bradshaw, A.K.L.

1996-09-01

There are many different types of measurements that require a continuous time history of x-ray emission that can be provided with an x-ray streak camera. In order to properly analyze the images that are recorded with the x-ray streak cameras operated on Nova, it is important to account for the streak characterization of each camera. We have performed a number of calibrations of the streak cameras both on the bench as well as with Nova disk target shots where we use a time modulated laser intensity profile (self-beating of the laser) on the target to generate an x-ray comb. We have measured the streak camera sweep direction and spatial offset, curvature of the electron optics, sweep rate, and magnification and resolution of the electron optics

Fast optical shutters for Nova, a high power fusion laser

International Nuclear Information System (INIS)

Bradley, L.P.; Gagnon, W.L.; Carder, B.M.

1977-01-01

Preliminary design and performance test results for fast optical shutters intended for use in the Nova high power fusion laser system are briefly described. Both an opening shutter to protect the pellet target from amplified spontaneous emission (ASE), and a closing shutter to protect the laser from light reflected back from the target are discussed. Faraday rotators, synchronized by a 400 Hz oscillator, provide an opening shutter mechanism with an opening time of approximately 10 μs. A plasma closing shutter, employing electrical sublimation of a foil, provide a shutter closing time of 70 ns +- 20 ns. Energy for foil sublimation is provided by discharge of a 42 J capacitor bank. Implementation of these shutter techniques in the Nova system is anticipated to improve laser output power and efficiency

Desarrollo de sistema de gestión académica de centro preuniversitario

OpenAIRE

Castañeda Alegría, Sergio Alfredo; Castañeda Alegría, Sergio Alfredo

2008-01-01

El presente informe tiene como fin desarrollar e implementar un modelo de software basado en plataforma web, tomando como caso de estudio los procesos de coordinación de la gestión académica del Centro Preuniversitario de la UNIVERSIDAD PERUANA DE LAS AMÉRICAS (UPLA), con lo que se busca informatizar los procesos académicos y administrativos de dicha coordinación. El Centro Preuniversitario de la UPLA, por ser parte de una institución educativa, necesita automatizar sus procesos de gestión...

Educational Technology Program for Nova Scotia: Initial Phase. A Report on the Federal-Provincial Study of Educational Technology in Nova Scotia.

Science.gov (United States)

deVille, Barry, Ed.

This is a preliminary examination of the present status and future prospects of educational technology in Nova Scotian schools. It is aimed at developing a plan to enhance the quality of educational technology by concentrating on systems which will be conducive to realizing educational goals at a reasonable cost. An overview of the institutional…

FAMILIA, INMIGRACIÓN Y COMUNICACIÓN CON EL CENTRO ESCOLAR: UN ESTUDIO COMPARATIVO

Directory of Open Access Journals (Sweden)

M.ª Ángeles Hernández Prados

2016-01-01

Full Text Available La importancia de establecer lazos de comunicación y colaboración mutua entre las familias de los escolares y los centros educativos para el desarrollo de la educación integral del alumnado, es hoy día una realidad indiscutible. Desde la perspectiva de la educación inclusiva, las relaciones entre sendas instituciones deben integrar a los padres y madres de todo el alumnado, también a los que poseen algún tipo de riesgo de exclusión social. Entre este colectivo se encuentran las familias inmigrantes. Por este motivo, en esta investigación hemos querido comparar la comunicación que se establece entre las familias y el centro educativo en el que cursan estudios sus hijos en la Comunidad Autónoma de la Región de Murcia (CARM, en función de su nacionalidad. Para ello se ha aplicado un cuestionario a 2494 familias de esta Comunidad en una investigación conjunta realizada por el Consejo Escolar de la Región de Murcia (CERM y la Universidad de Murcia. Los resultados indican que los padres y madres españoles conocen mejor el centro educativo de sus hijos, participan en mayor medida en la vida del mismo, contribuyen más al desarrollo del aprendizaje del alumnado desde el hogar, y poseen relaciones más positivas con el centro que las familias inmigrantes. Estas diferencias entre sendos colectivos son estadísticamente significativas a nivel global y también en las etapas educativas de Educación Infantil, Primaria y Educación Secundaria Obligatoria, pero no en Bachillerato. Estos resultados invitan a reflexionar sobre posibles pautas de actuación desde instancias político-académicas y la propia comunidad educativa que ayuden a integrar a los padres y madres del alumnado inmigrante en el centro escolar de sus hijos.

Multiwavelength monitoring of the dwarf nova VW Hydri

International Nuclear Information System (INIS)

Pringle, J.E.; Bateson, F.M.; Hassall, B.J.M.

1987-01-01

The results of a prolonged and coordinated set of observations of the dwarf nova VW Hydri spanning optical to X-ray wavelengths are described in this and four subsequent papers. In this paper an overview is given of the data set as a whole, with particular reference to its implications for an understanding of the object. (author)

Novas tecnologias na aula de Matemática

OpenAIRE

Ponte, João Pedro da

1995-01-01

As novas tecnologias computacionais (NT) assumiram um papel de primeiro plano no ensino da Matemática na última década. Este artigo ilustra o partido que se pode tirar, em diferentes níveis de ensino, de materiais já perfeitamente testados, largamente disponíveis e susceptíveis de generalizada utilização.

BRIGHT 'MERGER-NOVA' FROM THE REMNANT OF A NEUTRON STAR BINARY MERGER: A SIGNATURE OF A NEWLY BORN, MASSIVE, MILLISECOND MAGNETAR

International Nuclear Information System (INIS)

Yu, Yun-Wei; Zhang, Bing; Gao, He

2013-01-01

A massive millisecond magnetar may survive the merger of a neutron star (NS) binary, which would continuously power the merger ejecta. We develop a generic dynamic model for the merger ejecta with energy injection from the central magnetar. The ejecta emission (the m erger-nova ) powered by the magnetar peaks in the UV band and the peak of the light curve, progressively shifts to an earlier epoch with increasing frequency. A magnetar-powered merger-nova could have an optical peak brightness comparable to a supernova, which is a few tens or hundreds times brighter than the radioactive-powered merger-novae (the so-called macro-nova or kilo-nova). On the other hand, such a merger-nova would peak earlier and have a significantly shorter duration than that of a supernova. An early collapse of the magnetar could suppress the brightness of the optical emission and shorten its duration. Such millisecond-magnetar-powered merger-novae may be detected from NS-NS merger events without an observed short gamma-ray burst, and could be a bright electromagnetic counterpart for gravitational wave bursts due to NS-NS mergers. If detected, it suggests that the merger leaves behind a massive NS, which has important implications for the equation-of-state of nuclear matter

High resolution time- and 2-dimensional space-resolved x-ray imaging of plasmas at NOVA

International Nuclear Information System (INIS)

Landen, O.L.

1992-01-01

A streaked multiple pinhole camera technique, first used by P. Choi et al. to record time- and 2-D space-resolved soft X-ray images of plasma pinches, has been implemented on laser plasmas at NOVA. The instrument is particularly useful for time-resolved imaging of small sources ( 2.5 key imaging, complementing the existing 1--3 key streaked X-ray microscope capabilities at NOVA

IRCAM, Centro Pompidou París – Francia

Directory of Open Access Journals (Sweden)

Piano, -

1979-05-01

Full Text Available IRCAM is an autonomous department of the well known Pompidou Centre. The main building, destined to many varied cultural purposes, consists of a broad, open structure combining different spaces and functions, with ample flexibility, capable of housing the most diversified activities. IRCAM is integrated in this wide range of functions as an underground cellular complex adjacent to the Centre. It contains very specific acoustic features to make it capable, under optimal conditions, of carrying out its main objective: acoustic musical research work.

El IRCAM es un departamento autónomo del conocido Centro Georges Pompidou. El edificio principal, destinado a usos culturales muy diferentes, está constituido por una amplia y abierta estructura que combina distintos ambientes y funciones, dotada de mucha flexibilidad y apta para el desarrollo de las más diversas actividades. El IRCAM queda incorporado a este abanico de funciones como un departamento celular subterráneo, contiguo al Centro. Presenta características acústicas muy específicas que le posibilitan para el desarrollo en condiciones óptimas de su función: la investigación en el campo acústico-musical.

Target area for Nova upgrade: Containing ignition and beyond

International Nuclear Information System (INIS)

Tobin, M.T.; Smith, J.R.; Campbell, D.; Wong, D.K.; Sullivan, J.A.; Pendergrass, J.; Weinstein, B.; Klein, M.

1991-01-01

The Lawrence Livermore National Laboratory (LLNL) is developing a conceptual design for upgrading the Nova laser from ∼ 50 kJ to ∼ 1.8 MJ of laser energy at a wavelength of 351 nm. Anticipated target performance includes achieving ignition and possibly fusion yields to 20 MJ. The target area design represents a unique challenge since it will be operating in a regime where first wall ablation and optics damage are major issues for the first time in an ICF facility. Here we describe potential performance criteria for the facility and anticipated yield-dependent x-ray, neutron, shrapnel, and debris environments. We also briefly describe the different systems that make up the target area and discuss some of the design issues. The insignificant environmental impact Nova Upgrade (NU) operations is anticipated to have on the laboratory and surrounding area is discussed. Finally, alternate design options are described along with their potential benefits

Development Application - Terra Nova Development - Canada-Newfoundland Benefits Plan

International Nuclear Information System (INIS)

1996-01-01

The Canada-Newfoundland Benefits Plan, part of the overall application to develop the Terra Nova Field off the coast of Newfoundland details the benefits to Canadians, but most particularly to residents of Newfoundland and Labrador that a vibrant petroleum industry is expected to bring. In this document the proponents commit themselves to a course of action designed to enhance the opportunities for Canadian and Newfoundland participation in the development, in accordance with the Atlantic Accord legislation. In terms of this legislation, the project proponents are obliged to perform development functions from Newfoundland, acquire goods and services for the Terra Nova Development on a 'best value' basis, but consistent with the procurement policies and procedures for benefits. The proponents must consider Canadian and, in particular, Newfoundland benefits as one of the factors in the procurement of goods and services, and require contactors and subcontractors to adhere to the development's benefits principles, objectives and commitments. A 7-page glossary is also included

Downy mildew disease of New England aster (Symphyotrichum novae-angliae) caused by Basidiophora simplex in New York

Science.gov (United States)

The native perennial New England aster (Symphyotrichum novae-angliae; syn.=Aster novae-anglicae) is ubiquitous throughout most of the United States, as they self-seed and are well-adapted to many environments. New England asters are valued for their prominent dense clusters of purple flowers that at...

Art Education, Romantic Idealism, and Work: Comparing Ruskin's Ideas to Those Found in Nineteenth Century Nova Scotia.

Science.gov (United States)

Amburgy, Patricia; Soucy, Donald

1989-01-01

Examines the relationship between romantic idealism and vocational goals of art education in nineteenth-century Nova Scotia, Canada. Compares these ideas with those of John Ruskin concerning art and morality. Discusses the views of the Nova Scotian educators relative to issues of contemporary art education. (KO)

The SSS classical nova V5116 Sgr

Science.gov (United States)

Sala, G.; Ness, J.; Greiner, J.; Hernanz, M.

2017-10-01

XMM-Newton observed the nova V5116 Sgr during its supersoft phase (SSS). V5116 Sgr showed a decrease of the flux by a factor around 8 during 2/3 of the orbital period. The broad band EPIC spectra remain unchanged during the different flux phases, suggesting an occultation of the central source in a high inclination system. While the global SED does not change significantly, the RGS spectrum is changing between the high and the low flux phases. The non-occultation phase shows a typical white dwarf atmosphere spectrum, dominated by absorption lines. During the low flux periods an extra component of emission lines is superimposed to the soft X-ray continuum. This supports the picture of V5116 Sgr as the clearest example of a system switching between the SSa class of SSS novae, with spectra dominated by absorption lines, and the SSe class, showing an emission lines component. In addition, the simultaneous OM images allow us to find a phase solution for the X-ray light-curve. A thick rim of the accretion disk as the one developed for the SSSs CAL 87, RX J0019.8, and RX J0513.9 could provide a plausible model both for the optical and the X-ray light curve of V5116 Sgr.

A randomized trial of three copper IUDs (MLCu250, MLCu375 and Nova-T).

Science.gov (United States)

Bratt, H; Skjeldestad, F E; Cullberg Valentin, K

1988-01-01

A randomized prospective trial of three copper IUDs, Nova-T, MLCu375 and MLCu250, including 200 of each, is presented. Insertion was done at the hospital outpatient clinic on normally menstruating women and on women in puerperio. Follow-up was scheduled after 12, 24 and 36 months. Pregnancy rates were low for all 3 models. Pearl indices after 3 years were 0.5, 0.9 and 0.8 for Nova-T, MLCu375 and MLCu250 respectively (NS). Abnormal bleeding and/or pain was the most frequent termination cause. Minor differences in the termination rates because of abnormal bleeding and/or pain were found and are discussed. The continuation rates based on all medically relevant IUD removals were 74%, 73% and 81% after 3 years for Nova-T, MLCu375 and MLCu250 respectively. No important difference in clinical performance between the three copper IUDs could be demonstrated.

High-energy Emission from Nonrelativistic Radiative Shocks: Application to Gamma-Ray Novae

Science.gov (United States)

Vurm, Indrek; Metzger, Brian D.

2018-01-01

The observation of GeV gamma-rays from novae by Fermi/LAT demonstrates that the nonrelativistic radiative shocks in these systems can accelerate particles to energies of at least ∼10 GeV. The low-energy extension of the same nonthermal particle distribution inevitably gives rise to emission in the hard X-ray band. Above ≳ 10 {keV}, this radiation can escape the system without significant absorption/attenuation, and can potentially be detected by NuSTAR. We present theoretical models for hard X-ray and gamma-ray emission from radiative shocks in both leptonic and hadronic scenarios, accounting for the rapid evolution of the downstream properties due to the fast cooling of thermal plasma. We find that due to strong Coulomb losses, only a fraction of {10}-4{--}{10}-3 of the gamma-ray luminosity is radiated in the NuSTAR band; nevertheless, this emission could be detectable simultaneously with the LAT emission in bright gamma-ray novae with a ∼50 ks exposure. The spectral slope in hard X-rays is α ≈ 0 for typical nova parameters, thus serving as a testable prediction of the model. Our work demonstrates how combined hard X-ray and gamma-ray observations can be used to constrain properties of the nova outflow (velocity, density, and mass outflow rate) and particle acceleration at the shock. A very low X-ray to gamma-ray luminosity ratio ({L}{{X}}/{L}γ ≲ 5× {10}-4) would disfavor leptonic models for the gamma-ray emission. Our model can also be applied to other astrophysical environments with radiative shocks, including SNe IIn and colliding winds in massive star binaries.

The ambient air quality accounts for the Nova Scotia Genuine Progress Index

International Nuclear Information System (INIS)

Monette, A.; Colman, R.

2004-01-01

The Nova Scotia Genuine Progress Index (GPI) is a measure of sustainable development which provides a complete and accurate picture of our well-being as a society. The GPI assigns explicit values to environmental quality, population health, livelihood security, equity, free time, and educational attainment. The Nova Scotia GPI includes 22 social, economic and environmental components, including ambient air quality. This report investigates Nova Scotia's ambient air concentrations and emissions of carbon monoxide (CO), total particulate matter (PM), sulphur dioxide (SO 2 ), nitrogen oxides (NOx), and volatile organic compounds (VOC). The costs of damages caused by the these key air pollutants are also examined. Exposure to these pollutants results in negative impacts on human health, damage to materials, agricultural crops and changes in forest productivity. From 1979 to 1996, national ambient concentrations of each of these pollutants decreased significantly. However, the national average concentration of ground-level ozone increased by 34 per cent during the same time period. In Nova Scotia, concentrations of CO, PM and SO 2 have declined dramatically since 1979, but the trends for NO 2 and ground-level ozone do not show significant declines. On a per capita basis, SOx emissions from electric power generation in the province are more than 8 times the Canadian average. The province also had higher per capita emissions of CO, PM, SOx and VOCs than all reporting OECD countries. Electric power generation is the greatest source of fuel combustion emissions in the province, followed by industrial and transportation sources. This report also described some individual actions that can be taken to reduce air pollutant emissions. 174 refs., 37 tabs., 60 figs

Experimental study of the 22Ne(p,γ)23Na reaction and its implications for novae scenarios

International Nuclear Information System (INIS)

Menzel, Marie-Luise

2013-01-01

The 22 Ne(p,γ) 23 Na reaction belongs to the catalytic neon-sodium cycle and has an important role in the explosive hydrogen burning. The neon-sodium cycle takes place at temperatures of T = 0.1 - 0.5 GK and is assumed to occur in different astrophysical systems: e.g. in novae, in super novae of type Ia and during the shell-burning of red giant branch stars. The implications of 22 Ne(p,γ) 23 Na and the neon-sodium cycle in a nova scenario have been studied by using the nuclear network code libnucnet at GSI in Darmstadt. A nova is an outburst of matter in a binary system consisting of a white dwarf and a red giant star. It is therefore a representative phenomenon for explosive hydrogen burning. For the calculation of the nucleosynthesis during the nova outburst, the code libnucnet requires the initial mass composition of the novae partners, the temperature and density profiles of the nova explosion and the thermonuclear reaction rates of the participating reactions. In the following, the code determined the flow and the final atomic abundance in the neon-sodium cycle during the entire nova process. Additionally, the influence of the temperature profile of the novae outburst as well as the thermonuclear reaction rate of the 22 Ne(p,γ) 23 Na reaction on the final atomic abundance in the outburst has been studied. A characteristic measure for the reactions in astrophysical environments is the thermonuclear reaction rate. The reaction rate of 22 Ne(p,γ) 23 Na has still strong uncertainties in the temperature range of T = 0.03 - 0.3 GK. These uncertainties are based on insufficient upper limits of the resonance strengths as well as the possible existence of tentative states that are populated in the energy range of E lab p = 30 - 300 keV. The research presented in this thesis is dedicated to the experimental study of the 22 Ne(p,γ) 23 Na reaction for an improved determination of the thermonuclear reaction rate. Furthermore, the implications of 22 Ne(p,γ) 23 Na and

NOVA integrated alignment/diagnostic sensors

International Nuclear Information System (INIS)

1978-01-01

Under Contract 3772003 to the Lawrence Livermore Laboratory, Aerojet ElectroSystems Company has investigated a number of alignment system design topics for the NOVA and SHIVA upgrade lasers. Prior reports dealt with the Main Beam Alignment System, and with Multipass Amplifier Alignment Concepts. This report, which completes the contract, examines ways in which the Return Beam Diagnostic (RBD) package and Incident Beam Diagnostic (IBD) packages may be reconfigured to a more integrated package. In particular, the report shows that the RBD optics may be directly integrated in the Pointing Focus and Centering (PFC) sensor, and that the IBD optics may use the same basic common configuration as the PFC/RBD package

Ocean and Coastal Acidification off New England and Nova Scotia

Science.gov (United States)

New England coastal and adjacent Nova Scotia shelf waters have a reduced buffering capacity because of significant freshwater input, making the region’s waters potentially more vulnerable to coastal acidification. Nutrient loading and heavy precipitation events further acid...

Nuevos centros de almacenamiento inca en Huánuco Pampa

OpenAIRE

Ordóñez Inga, Carlo José Alonso

2013-01-01

Se proporcionan nuevos alcances sobre la identificación y el estudio de nuevos lugares de almacenamiento o colcas asociados al Centro Administrativo Inca de Huánuco Pampa, los mismos que no fueron reconocidos por otros investigadores que trabajaron en la zona.

TV review: Nova scienceNOW - Season 2, Episode 4

CERN Multimedia

Lasser, Josh

2007-01-01

"Sitting down to watch the fourth episode of the second season of Nova ScienceNOW I'm mainly struck by one thought: why have they only put out four epidoses nearly nine months into their second season? The second story is all about CERN and the LHC. (2 pages)

Mechanical construction of the 22 Nova laser

International Nuclear Information System (INIS)

Hurley, C.A.; Frick, F.A.; Patton, H.G.; Bradley, G.; Martos, A.

1983-01-01

The Nova laser system for Inertial Confinement Fusion studies at Lawrence Livermore National Laboratory is under construction and will be completed October 1984 with first operations scheduled for 1985. This system is the largest precision opto-mechanical engineering system ever built. Major engineering and subsystems are mechanical, optical, and electrical power. A series of system technologies include alignment, diagnostics, target, frequency conversion, and controls. This paper will only discuss the mechanical system

Proceedings of Nova Scotia's 2006 energy research and development forum

International Nuclear Information System (INIS)

2006-01-01

The Nova Scotia 2006 energy research and development forum provided a venue for experts from industry, research institutions and government to discuss how research and development will shape the future of energy in the province. The forum was divided into 3 sessions: (1) building knowledge about the marine environment, (2) building knowledge about geoscience, and (3) building knowledge about sustainable energy. A wide ranges of issues related to the Nova Scotia region included whale identification; fisheries mapping; the commercialization of hydrocarbon discoveries; carbon capture and storage and petroleum system analysis and prospect evaluation. Keynote addresses were presented on produced water in Norway; deepwater exploration in Morocco; renewable energy and Canada's role as an energy superpower. The conference featured more than 57 presentations, of which 4 have been catalogued separately for inclusion in this database. refs., tabs., figs

Study of the Quasi-Elastic Scattering in the NOvA Detector Prototype

Energy Technology Data Exchange (ETDEWEB)

Betancourt, Minerba [Univ. of Minnesota, Minneapolis, MN (United States)

2013-06-01

NOvA is a 810 km long base-line neutrino oscillation experiment with two detectors (far 14 KTon and near detector 300 Ton) currently being installed in the NUMI o -axis neutrino beam produced at Fermilab. A 222 Ton prototype NOvA detector (NDOS) was built and operated in the neutrino beam for over a year to understand the response of the detector and its construction. The goal of this thesis is to study the muon neutrino interaction data collected in this test, specifically the identification of quasi-elastic charged-current interactions and measure the behavior of the quasi-elastic muon neutrino cross section.

The Shape of Long Outbursts in U Gem Type Dwarf Novae from AAVSO Data

Science.gov (United States)

Cannizzo, John K.

2012-01-01

We search the American Association of Variable Star Observers (AAVSO) archives of the two best studied dwarf novae in an attempt to find light curves for long out bursts that are extremely well-characterized. The systems are U Gem and S8 Cyg. Our goal is to search for embedded precursors such as those that have been found recently in the high fidelity Kepler data for superoutbursts of some members of the 8U UMa subclass of dwarf novae. For the vast majority of AAV80 data, the combination of low data cadence and large errors associated with individual measurements precludes one from making any strong statement about the shape of the long outbursts. However, for a small number of outbursts, extensive long term monitoring with digital photometry yields high fidelity light curves. We report the finding of embedded precursors in two of three candidate long outbursts. This reinforces van Paradijs' finding that long outbursts in dwarf novae above the period gap and superoutbursts in systems below the period gap constitute a unified class. The thermal-tidal instability to account for superoutbursts in the SU UMa stars predicts embedded precursors only for short orbital period dwarf novae, therefore the presence of embedded precursors in long orbital period systems - U Gem and SS Cyg - argues for a more general mechanism to explain long outbursts.

As novas tecnologias da informação e o consumismo em saúde

Directory of Open Access Journals (Sweden)

Paulo Roberto Vasconcellos-Silva

2010-08-01

Full Text Available Uma ampliação dos conceitos de consumo tem se deslocado na direção de processos sociais até agora não contemplados por categorias tradicionais. A presente revisão analisa a aplicação dos conceitos clássicos sobre consumismo às práticas recentemente identificadas no campo da saúde, como o fenômeno da cibercondria. O desafio teórico se refere à dificuldade de extrapolação das perspectivas econômicas do consumismo às questões do auto-cuidado no contexto das tecnologias de informação e comunicação (TICs. Procura-se compreender o fenômeno da mercadorização do cuidar-de-si sob o imperativo da auto-responsabilização em saúde. São identificadas e descritas as novas identidades consumidoras em vista das inauditas questões acerca dos aprimoramentos técnicos a modificar a natureza do auto-cuidado. Conclui-se que a saúde é consumida como vitalidade decomposta em artefatos de comercializar no contexto de uma nova bioeconomia - não mais ligada à idéia de emulação e posse, e sim a novas formas de perceber-se e cuidar-se perante múltiplos riscos e novas definições do que é ser humano.

Development and Dissemination of the El Centro Health Disparities Measures Library.

Science.gov (United States)

Mitrani, Victoria Behar; O'Day, Joanne E; Norris, Timothy B; Adebayo, Oluwamuyiwa Winifred

2017-09-01

This report describes the development and dissemination of a library of English measures, with Spanish translations, on constructs relevant to social determinants of health and behavioral health outcomes. The El Centro Measures Library is a product of the Center of Excellence for Health Disparities Research: El Centro, a program funded by the National Institute on Minority Health and Health Disparities of the U.S. National Institutes of Health. The library is aimed at enhancing capacity for minority health and health disparities research, particularly for Hispanics living in the United States and abroad. The open-access library of measures (available through www.miami.edu/sonhs/measureslibrary) contains brief descriptions of each measure, scoring information (where available), links to related peer-reviewed articles, and measure items in both languages. Links to measure websites where commercially available measures can be purchased are included, as is contact information for measures that require author permission. Links to several other measures libraries are hosted on the library website. Other researchers may contribute to the library. El Centro investigators began the library by electing to use a common set of measures across studies to assess demographic information, culture-related variables, proximal outcomes of interest, and major outcomes. The collection was expanded to include other health disparity research studies. In 2012, a formal process was developed to organize, expand, and centralize the library in preparation for a gradual process of dissemination to the national and international community of researchers. The library currently contains 61 measures encompassing 12 categories of constructs. Thus far, the library has been accessed 8,883 times (unique page views as generated by Google Analytics), and responses from constituencies of users and measure authors have been favorable. With the paucity of availability and accessibility of translated

Efficacy and patient satisfaction after NovaSure and Minerva endometrial ablation for treating abnormal uterine bleeding: a retrospective comparative study.

Science.gov (United States)

Scordalakes, Constantine; delRosario, Robert; Shimer, Andrew; Stankiewicz, Russell

2018-01-01

Compare amenorrhea rate, menstrual symptoms, patient satisfaction, and adverse events in women who underwent endometrial ablation with the NovaSure versus the Minerva radiofrequency ablation systems. We surveyed 189 premenopausal women (mean 40.8±6.2 years old) who underwent endometrial ablation for abnormal uterine bleeding using the NovaSure (n=97) or Minerva (n=92) systems, at four private US gynecology clinics, and whose procedure date was after July 2015 with follow-up ≥3 months. Women were surveyed an average of 11.3±3.9 months (range 137-532 days) after ablation. The subject-reported amenorrhea rate was 52% higher in NovaSure subjects than Minerva subjects (64% and 42%, respectively; p =0.004). Age and bleeding cyclicity did not affect amenorrhea rate in either group. Normal-to-no bleeding was reported by >90% of subjects after either treatment. NovaSure was significantly more effective than Minerva at reducing pad/tampon use in women with any residual bleeding (2.4±5.2 items/day versus 4.7±5.5 items/day, p =0.049). NovaSure was significantly more effective than Minerva at reducing premenstrual syndrome (PMS) symptoms ( p =0.019) and menstrual pain ( p =0.003), and more NovaSure subjects (94%) than Minerva subjects (78%) were satisfied with clinical outcomes ( p =0.003). Adverse events did not differ by treatment; three women in each group progressed to hysterectomy. While overall bleeding reduction in premenopausal women with abnormal uterine bleeding was excellent with either endometrial ablation system, NovaSure treatment resulted in a higher patient-reported 1-year amenorrhea rate, and women with residual bleeding used fewer pads and tampons than Minerva-treated women. Additionally, NovaSure subjects reported better menstrual-related life quality and PMS symptom alleviation, and greater satisfaction with outcomes than Minerva-treated women.

Orientación psicológica en Centros de Planificación Familiar.

OpenAIRE

Margarita Recondo García; Antonio Villasana Cunchillos

1988-01-01

La intención básica de este trabajo es explicar cómo se realizaría la orientación psicológica en Centros de Planificación Familiar. Señalando, primero, los objetivos generales y específicos en Planificación Familiar y luego los objetivos específicos del psicólogo y sus etapas de trabajo en los Centros de Planificación Familiar. Se estudian las necesidades psicológicas de la comunidad, el rol del psicólogo y la organización del trabajo en Planificación Familiar.

Responsabilidad por pérdida de oportunidad asistencial en patologías neurológicas en la medicina pública española

Directory of Open Access Journals (Sweden)

Carlos Sardinero-García

2017-01-01

Conclusiones: La actividad litigante por pérdida de oportunidad asistencial en patologías neurológicas, en la medicina pública española, ha aumentado de manera significativa estos últimos años. Las sentencias fueron dictadas fundamentalmente por error diagnóstico o por tratamiento inadecuado.

Espacios genéricos y apropiaciones sociales en centros comerciales: El caso del Mall Plaza del Trébol en el área metropolitana de Concepción, 1994-2012

Directory of Open Access Journals (Sweden)

Aarón Napadensky

2015-05-01

Full Text Available La narrativa académica, global y latinoamericana, expone al shopping mall y su proliferación, como parte de una emergente y genérica pseudo-ciudad; fortificaciones elitistas, socialmente homogéneas y privatizadoras del espacio público, no-lugares estériles en la producción de sociabilidades y contención de lo urbano. Sin embargo, también están quienes plantean estos lugares como espacios de oportunidad destacando la existencia de fenómenos de transposición de actividades sociales desde la ciudad tradicional a estos posmodernos escenarios. Pues bien, la presente investigación expone y discute las discursivas predominantes mediante un análisis cuantitativo y cualitativo del primer shopping mall construido fuera de la capital, el Mall Plaza del Trébol (1994 de Concepción, Chile; afirmando que, bajo los procesos de apropiación y transformación morfológico-programática, los centros comerciales de nuevo cuño no siempre son estériles en lo urbano. Incluso que, más allá de los procesos de transposición identificados, están siendo espacios de soporte para la producción de nuevas sociabilidades por parte de comunidades de intereses emergentes y transespaciales.

ASPECTOS ERGONÔMICOS E POSTURAIS EM CENTRO DE MATERIAL

Directory of Open Access Journals (Sweden)

Neusa Maria Cosía Alexandre

Full Text Available Determinados fatores ambientais inadequados podem provocar lesões na coluna vertebral. Este trabalho discute certos aspectos ergonômicos e posturais específicos em Centro de Material com o objetivo de desenvolver uma consciência crítica a respeito dos efeitos do local de trabalho sobre a saúde.

Modeling the classical nova outburst. I. Exploring the physics of a new mechanism

International Nuclear Information System (INIS)

Kutter, G.S.; Sparks, W.M.

1989-01-01

Model calculations were performed to describe a mechanism that produces classical nova outbursts on white dwarfs of 1 solar mass or less and for accretion rates of 4 x 10 to the -10th solar mass/yr or greater, i.e., the parameters corresponding to observed data of nova systems. Calculations point to four factors that can induce nuclear runaways of sufficient strength to eject about 0.0001 solar mass at speeds of several hundred to a few thousand km per second, as is observed in classical novae. These are (1) the effects of storage of angular momentum in the star's envelope during the accretion phase; (2) the reduction of centrifugal forces in the star's outer layers during the early nuclear runaway phase, through the inward transport of angular momentum; (3) the inward movement of the zone of peak nuclear burning through the convectively induced shear instability during the runaway phase; and (4) the mixing of original CO stellar matter and H-rich matter, also through the convectively induced shear instability. 58 refs

La satisfacción de los clientes de los centros deportivos municipales de Barcelona

OpenAIRE

Elasri Ejjaberi, Amal; Triadó i Ivern, Xavier Ma.; Aparicio Chueca, Ma. del Pilar (María del Pilar)

2015-01-01

El objetivo de este trabajo es identificar y analizar las variables que más influyen en la satisfacción del cliente en los centros deportivos de Barcelona. Los datos fueron recogidos en una encuesta entre los clientes actuales de centros deportivos municipales. Un análisis factorial aplicado a esta información revela cinco dimensiones que subyacen a los múltiples componentes de la oferta de servicios en dichas instalaciones: su calidad, los recursos humanos, la comunicación, el entorno social...

Evaluación de centros de recursos en la Red : el caso de Octopus

OpenAIRE

Medina, Antonio; Carioca, Vito; Passarinho, Aldo

2003-01-01

El creciente desarrollo de centros de recursos en la Red está demandando de forma progresiva la puesta en marcha de estrategias de evaluación de los mismos que permitan su mayor optimización. Los autores de este trabajo desarrollan una metodología específica para la valoración de un centro específico en la Red, Octopus._______________________________Resource centres offer teachers different means to improve and make their work easier. The present paper shows a programme to evaluate resource c...

APROXIMACIÓN A LOS FACTORES DE MEJORA DE LA EFICACIA ESCOLAR DERIVADOS DEL PROGRAMA IQEA

Directory of Open Access Journals (Sweden)

Isabel López Cobo

2011-01-01

Full Text Available Este trabajo muestra los resultados obtenidos en un estudio realizado con maestros y maestras de Educación Infantil y Primaria de la ciudad de Córdoba acerca de la valoración de los elementos intervinientes en la mejora de la eficacia escolar, agrupados en factores como centro educativo, dirección del centro, profesorado, enseñanza-aprendizaje, opinión del alumnado y entorno familiar y escolar. Asimismo, se ha valorado la idoneidad de incorporar en sus centros de trabajo los parámetros marcados por el programa de mejora de la eficacia escolar IQEA. En un segundo momento, se ha recogido la opinión del alumnado de tercero de las diferentes especialidades de Educación Primaria de la Universidad de Córdoba, acerca de los factores que influyen en la mejora de la eficacia escolar y en la oportunidad que ofrece el programa IQEA para la consecución de la misma.

Cuerpos, Territorios y Población

Directory of Open Access Journals (Sweden)

Patricia Alejandra Collado

2010-12-01

Full Text Available Este libro es fruto de las experiencias de diferentes equipos de investigación y líneas de pesquisa que de la mano de Adrián Scribano y Eugenia Boito abrevaron en el Programa de Estudios Sobre Acción Colectiva y Conflicto Social del Centro de Estudios Avanzados de la Universidad de Córdoba. En esta oportunidad su producción colectiva hace énfasis en las transformaciones acaecidas en la vida de los sujetos –producto de la neocolonialidad del capital- y pone como centro la reflexión sobre sus implicancias en tanto marcas expuestas en el cuerpo, el territorio y la población de las ciudades de Córdoba y Villa María.

Nova Mus 2018 (PNV J11261220-6531086) Is Forming Dust

Science.gov (United States)

Walter, Frederick M.

2018-02-01

Nova Mus 2018 (PNV J11261220-6531086) was discovered by R Kaufman on 2018 Jan 14.486, and reported by P. Schmeer in vsnet-alert 21772. The first detection was 2018 Jan 3.24 (ASAS-SN, reported in the TOCP).

Grado de cumplimiento de la legislación e impartición de enseñanzas anti-tabaco en los centros escolares españoles

Directory of Open Access Journals (Sweden)

Hernández-Mezquita Miguel Angel

2000-01-01

Full Text Available Fundamento: No se dispone de estudios que analicen el cumplimiento de la legislación antitabaco en los centros escolares españoles, por lo que nos propusimos conocer el grado de cumplimiento de la legislación oficial anti-tabaco en dichos centros y la influencia que ello tiene sobre el porcentaje de alumnos fumadores. Método: Se realizó una encuesta entre 3.050 directores de centros educativos españoles, a los que se les preguntó sobre diversos aspectos del cumplimiento de la legislación oficial anti-tabaco en los centros y sobre las principales características del consumo de tabaco en los mismos. Resultados: El 80,9% de los directores afirman que en sus centros se exige el cumplimiento de la legislación y el 64,9% disponen de carteles que advierten de la prohibición de fumar. Afirman impartir enseñanzas anti-tabaco el 82,2% de los centros en los que se exige la legislación y en el 64,8% de los centros en los que esta legislación no se exige. Creen que el porcentaje de profesores que fuman ante los alumnos es del 5,9% en los centros en que se exige la legislación y del 12,9% en los que no se cumple. En los centros donde se imparten enseñanzas anti-tabaco creen que han probado el tabaco el 29% de los alumnos, frente al 31% que creen lo han hecho en los centros donde no se imparten estas enseñanzas (p<0,001. Conclusiones: El cumplimiento de la legislación es insuficiente. Los directores de los centros educativos, como encargados de velar por el cumplimiento de la legislación oficial anti-tabaco en sus centros, deben exigir el cumplimiento de esta legislación, ya que esta medida es eficaz para mejorar el funcionamiento global de los centros y para reducir los porcentajes de alumnos y profesores fumadores.

La igualdad de oportunidades en la escuela de la diversidad

Directory of Open Access Journals (Sweden)

Joan J. Muntaner

2000-01-01

Full Text Available La sociedad actual ha vivido en estos últimos años una acumulación de cambios en los valores, actitudes y prácticas, que se reflejan en los planteamientos de la educación y en la realidad de la escuela. Uno de estos cambios se refiere al reconocimiento de la diversidad del alumnado, que obliga a la búsqueda de alternativas didácticas en la educación y en la práctica de la escuela: desde el reconocimiento explícito del derecho de todos a la educación y de que ésta se desarrolle atendiendo a la igualdad de oportunidades; donde la diversidad sea un valor enriquecedor y positivo para todos. Estas alternativas se fundamentan en el paso de un modelo de intervención compensatoria a introducir prácticas coherentes con la inclusión educativa, que se fundamenta en la implantación de un currículum comprensivo común y a la determinación de apoyos normalizados para alcanzar una real integración de todos los alumnos.

CONSTRUINDO O ESTADO CORPORATIVO: AS EXPERIÊNCIAS HISTÓRICAS DE PORTUGAL E ESPANHA

Directory of Open Access Journals (Sweden)

Paula Borges Santos

2015-12-01

Full Text Available Neste dossier reúnem-se artigos de algumas comunicações apresentadas ao Congresso Internacional A Era do Corporativismo – Regime, Representações e Debates, realizado entre 13 e 15 de Janeiro de 2015, na Faculdade de Ciências Sociais e Humanas da Universidade Nova de Lisboa, promovido pelo Instituto de Instituto de História Contemporânea da Universidade Nova de Lisboa (IHCUNL, pelo Departamento de Historia Contemporánea, Facultad de Geografía e Historia da Universidad Nacional de Educación a Distancia (FGH-UNED, pelo Centro de Estudos Interdisciplinares do Século XX da Universidade de Coimbra (CEISXX – UC, pelo Centro Studi sull’Europa Mediterranea da Università degli Studi della Tuscia (CSEM-UST, e pelo Departamento de História, Faculdade de Filosofia e de Ciências Humanas da Pontifícia Universidade Católica de Rio Grande do Sul (FFCH-PUCRS.

NOvA Short-Baseline Tau Neutrino Appearance Search

Energy Technology Data Exchange (ETDEWEB)

Keloth, Rijeesh [Cochin U.; Aurisano, Adam [Cincinnati U.; Sousa, Alexander [Cincinnati U.; Davies, Gavin S [Indiana U.; Suter, Louise [Fermilab; Plunkett, Robert K [Fermilab

2017-10-01

Standard three-flavor neutrino oscillations have well explained by a wide range of neutrino experiments. However, the anomalous results, such as electron-antineutrino excess seen by LSND and MiniBooNE do not fit the three-flavor paradigm. This can be explained by an additional fourth flavor sterile neutrino at a larger scale than the existing three flavor neutrinos. The NOvA experiment consists of two finely segmented, liquid scintillator detectors operating 14 .6 mrad off-axis from the NuMI muon-neutrino beam. The Near Detector is located on the Fermilab campus, 1 km from the NuMI target, while the Far Detector is located at Ash River, MN, 810 km from the NuMI target. The NOvA experiment is primarily designed to measure electron-neutrino appearance at the Far Detector using the Near Detector to control systematic uncertainties; however, the Near Detector is well suited for searching for anomalous short-baseline oscillations. This poster will present a novel method for selecting tau neutrino interactions with high purity at the Near Detector using a convolutional neural network. Using this method, the sensitivity to anomalous short-baseline tau-neutrino appearance due to sterile neutrino oscillations will be presented.

Atención domiciliaria en enfermería: estudio de un centro de atención primaria de Salamanca

OpenAIRE

Rosales Tejera, Marta

2014-01-01

El objetivo principal de este proyecto es mostrar la importancia que tiene la Atención Domiciliaria y la oportunidad que supone, como medio para mejorar la salud y la calidad de vida de la población

Evaluación del impacto de la agricultura de conservación en la reconversión agropecuaria sustentable de la región centro-andina colombiana

Directory of Open Access Journals (Sweden)

Santiago Manuel Sáenz Torres

2009-07-01

Full Text Available Innovaciones sustentables, como la agricultura de conservación para la reconversión agropecuaria en la región centro-andina de Colombia, han tenido relativo éxito en ciertas áreas en las dos últimas décadas, pero la persistente degradación de los suelos y la indetenible destrucción de los páramos, obliga a plantear nuevas estrategias basadas en la investigación, para la mejor difusión de esta innovación. Se efectuó una evaluación de los principales impactos positivos que un importante grupo de técnicos y líderes de la innovación han percibido en el desarrollo del “Proyecto Checua”, conducido por la Corporación Autónoma de Cundinamarca en el altiplano cundiboyacense. Los resultados caracterizan a un grupo casi homogéneo de innovadores, poseedores de amplia experiencia y dispuestos a colaborar en la difusión de la agricultura de conservación. Se encontraron una serie de oportunidades favorables que de conducirlas hacia un correcto proceso de gestión de la innovación, con participación política y la articulación de los diversos actores, permitirían una rápida multiplicación de la innovación a mediano plazo, para asegurar una importante área para la reconversión sustentable de los agroecosistemas andinos

Can households earning minimum wage in Nova Scotia afford a nutritious diet?

Science.gov (United States)

Williams, Patricia L; Johnson, Christine P; Kratzmann, Meredith L V; Johnson, C Shanthi Jacob; Anderson, Barbara J; Chenhall, Cathy

2006-01-01

To assess the affordability of a nutritious diet for households earning minimum wage in Nova Scotia. Food costing data were collected in 43 randomly selected grocery stores throughout NS in 2002 using the National Nutritious Food Basket (NNFB). To estimate the affordability of a nutritious diet for households earning minimum wage, average monthly costs for essential expenses were subtracted from overall income to see if enough money remained for the cost of the NNFB. This was calculated for three types of household: 1) two parents and two children; 2) lone parent and two children; and 3) single male. Calculations were also made for the proposed 2006 minimum wage increase with expenses adjusted using the Consumer Price Index (CPI). The monthly cost of the NNFB priced in 2002 for the three types of household was 572.90 dollars, 351.68 dollars, and 198.73 dollars, respectively. Put into the context of basic living, these data showed that Nova Scotians relying on minimum wage could not afford to purchase a nutritious diet and meet their basic needs, placing their health at risk. These basic expenses do not include other routine costs, such as personal hygiene products, household and laundry cleaners, and prescriptions and costs associated with physical activity, education or savings for unexpected expenses. People working at minimum wage in Nova Scotia have not had adequate income to meet basic needs, including a nutritious diet. The 2006 increase in minimum wage to 7.15 dollars/hr is inadequate to ensure that Nova Scotians working at minimum wage are able to meet these basic needs. Wage increases and supplements, along with supports for expenses such as childcare and transportation, are indicated to address this public health problem.

TV photometry of the Nova Cygni 1975 (V1500 Cyg)

International Nuclear Information System (INIS)

Pavlenko, E.P.

1983-01-01

About 1800 TV pictures of Nova Cygni 1975 during 60 hours were obtained in 1979-1980 at the Crimean Astrophysical observatory. The observations were carried out in V and sometimes - similtaneously in B and V colour systems. The period of brightness Variations 0sUp(d).279226 remains constant after it has stabilized in 1978, but the amplitude and mean brightness of the individual light curves change from cycle to cycle. The mean light curves are asymmetrical. The depth of primary and secondary minima is sporadically increasing from year to year and reached 1sup(m).2 in 1980. The mean curves obtained in V system in 1980 and in continuum in 1976-1977 are similar. It is supposed that 6,7-hour varia. tions of brightness appear as a resUlt of partial eclipses in close binary system Nova Cygni with orbit inclination i=60 deg

Responsabilidad por pérdida de oportunidad asistencial en patología oncológica maligna en la medicina pública española

Directory of Open Access Journals (Sweden)

Carlos Sardinero-García

2016-11-01

Conclusiones: La actividad litigante por pérdida de oportunidad asistencial en patologías oncológicas en la medicina pública española ha aumentado de manera significativa estos últimos años. Las sentencias fueron dictadas fundamentalmente por error diagnóstico o tratamiento inadecuado.

Suzaku Observation of the Dwarf Nova V893 Scorpii: The Discovery of a Partial X-Ray Eclipse

Science.gov (United States)

Mukai, Koji; Zietsman, E.; Still, M.

2008-01-01

V893 Sco is an eclipsing dwarf nova that had attracted little attention from X-ray astronomers until it was proposed as the identification of an RXTE all-sky slew survey (XSS) source. Here we report on the po inted X-ray observations of this object using Suzaku. We confirm V893 Sco to be X-ray bright, whose spectrum is highly absorbed for a dwar f nova. We have also discovered a partial X-ray eclipse in V893 Sco. This is the first time that a partial eclipse is seen in Xray light c urves of a dwarf nova. We have successfully modeled the gross features of the optical and X-ray eclipse light curves using a boundary layer geometry of the X-ray emission region. Future observations may lead to confirmation of this basic picture, and allow us to place tight co nstraints on the size of the X-ray emission region. The partial X-ray eclipse therefore should make V893 Sco a key object in understanding the physics of accretion in quiescent dwarf nova.